3709 lines
121 KiB
C++
3709 lines
121 KiB
C++
/*
|
||
* Copyright © 2011 Mozilla Foundation
|
||
*
|
||
* This program is made available under an ISC-style license. See the
|
||
* accompanying file LICENSE for details.
|
||
*/
|
||
#undef NDEBUG
|
||
|
||
#include <AudioUnit/AudioUnit.h>
|
||
#include <TargetConditionals.h>
|
||
#include <assert.h>
|
||
#include <mach/mach_time.h>
|
||
#include <pthread.h>
|
||
#include <stdlib.h>
|
||
#if !TARGET_OS_IPHONE
|
||
#include <AvailabilityMacros.h>
|
||
#include <CoreAudio/AudioHardware.h>
|
||
#include <CoreAudio/HostTime.h>
|
||
#include <CoreFoundation/CoreFoundation.h>
|
||
#endif
|
||
#include "cubeb-internal.h"
|
||
#include "cubeb/cubeb.h"
|
||
#include "cubeb_mixer.h"
|
||
#include <AudioToolbox/AudioToolbox.h>
|
||
#include <CoreAudio/CoreAudioTypes.h>
|
||
#if !TARGET_OS_IPHONE
|
||
#include "cubeb_osx_run_loop.h"
|
||
#endif
|
||
#include "cubeb_resampler.h"
|
||
#include "cubeb_ring_array.h"
|
||
#include <algorithm>
|
||
#include <atomic>
|
||
#include <set>
|
||
#include <string>
|
||
#include <sys/time.h>
|
||
#include <vector>
|
||
|
||
using namespace std;
|
||
|
||
#if MAC_OS_X_VERSION_MIN_REQUIRED < 101000
|
||
typedef UInt32 AudioFormatFlags;
|
||
#endif
|
||
|
||
#define AU_OUT_BUS 0
|
||
#define AU_IN_BUS 1
|
||
|
||
const char * DISPATCH_QUEUE_LABEL = "org.mozilla.cubeb";
|
||
const char * PRIVATE_AGGREGATE_DEVICE_NAME = "CubebAggregateDevice";
|
||
|
||
#ifdef ALOGV
|
||
#undef ALOGV
|
||
#endif
|
||
#define ALOGV(msg, ...) \
|
||
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), \
|
||
^{ \
|
||
LOGV(msg, ##__VA_ARGS__); \
|
||
})
|
||
|
||
#ifdef ALOG
|
||
#undef ALOG
|
||
#endif
|
||
#define ALOG(msg, ...) \
|
||
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), \
|
||
^{ \
|
||
LOG(msg, ##__VA_ARGS__); \
|
||
})
|
||
|
||
/* Testing empirically, some headsets report a minimal latency that is very
|
||
* low, but this does not work in practice. Lie and say the minimum is 256
|
||
* frames. */
|
||
const uint32_t SAFE_MIN_LATENCY_FRAMES = 128;
|
||
const uint32_t SAFE_MAX_LATENCY_FRAMES = 512;
|
||
|
||
const AudioObjectPropertyAddress DEFAULT_INPUT_DEVICE_PROPERTY_ADDRESS = {
|
||
kAudioHardwarePropertyDefaultInputDevice, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
const AudioObjectPropertyAddress DEFAULT_OUTPUT_DEVICE_PROPERTY_ADDRESS = {
|
||
kAudioHardwarePropertyDefaultOutputDevice, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
const AudioObjectPropertyAddress DEVICE_IS_ALIVE_PROPERTY_ADDRESS = {
|
||
kAudioDevicePropertyDeviceIsAlive, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
const AudioObjectPropertyAddress DEVICES_PROPERTY_ADDRESS = {
|
||
kAudioHardwarePropertyDevices, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
const AudioObjectPropertyAddress INPUT_DATA_SOURCE_PROPERTY_ADDRESS = {
|
||
kAudioDevicePropertyDataSource, kAudioDevicePropertyScopeInput,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
const AudioObjectPropertyAddress OUTPUT_DATA_SOURCE_PROPERTY_ADDRESS = {
|
||
kAudioDevicePropertyDataSource, kAudioDevicePropertyScopeOutput,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
typedef uint32_t device_flags_value;
|
||
|
||
enum device_flags {
|
||
DEV_UNKNOWN = 0x00, /* Unknown */
|
||
DEV_INPUT = 0x01, /* Record device like mic */
|
||
DEV_OUTPUT = 0x02, /* Playback device like speakers */
|
||
DEV_SYSTEM_DEFAULT = 0x04, /* System default device */
|
||
DEV_SELECTED_DEFAULT =
|
||
0x08, /* User selected to use the system default device */
|
||
};
|
||
|
||
void
|
||
audiounit_stream_stop_internal(cubeb_stream * stm);
|
||
static int
|
||
audiounit_stream_start_internal(cubeb_stream * stm);
|
||
static void
|
||
audiounit_close_stream(cubeb_stream * stm);
|
||
static int
|
||
audiounit_setup_stream(cubeb_stream * stm);
|
||
static vector<AudioObjectID>
|
||
audiounit_get_devices_of_type(cubeb_device_type devtype);
|
||
static UInt32
|
||
audiounit_get_device_presentation_latency(AudioObjectID devid,
|
||
AudioObjectPropertyScope scope);
|
||
|
||
#if !TARGET_OS_IPHONE
|
||
static AudioObjectID
|
||
audiounit_get_default_device_id(cubeb_device_type type);
|
||
static int
|
||
audiounit_uninstall_device_changed_callback(cubeb_stream * stm);
|
||
static int
|
||
audiounit_uninstall_system_changed_callback(cubeb_stream * stm);
|
||
static void
|
||
audiounit_reinit_stream_async(cubeb_stream * stm, device_flags_value flags);
|
||
#endif
|
||
|
||
extern cubeb_ops const audiounit_ops;
|
||
|
||
struct cubeb {
|
||
cubeb_ops const * ops = &audiounit_ops;
|
||
owned_critical_section mutex;
|
||
int active_streams = 0;
|
||
uint32_t global_latency_frames = 0;
|
||
cubeb_device_collection_changed_callback input_collection_changed_callback =
|
||
nullptr;
|
||
void * input_collection_changed_user_ptr = nullptr;
|
||
cubeb_device_collection_changed_callback output_collection_changed_callback =
|
||
nullptr;
|
||
void * output_collection_changed_user_ptr = nullptr;
|
||
// Store list of devices to detect changes
|
||
vector<AudioObjectID> input_device_array;
|
||
vector<AudioObjectID> output_device_array;
|
||
// The queue should be released when it’s no longer needed.
|
||
dispatch_queue_t serial_queue =
|
||
dispatch_queue_create(DISPATCH_QUEUE_LABEL, DISPATCH_QUEUE_SERIAL);
|
||
// Current used channel layout
|
||
atomic<cubeb_channel_layout> layout{CUBEB_LAYOUT_UNDEFINED};
|
||
uint32_t channels = 0;
|
||
};
|
||
|
||
static unique_ptr<AudioChannelLayout, decltype(&free)>
|
||
make_sized_audio_channel_layout(size_t sz)
|
||
{
|
||
assert(sz >= sizeof(AudioChannelLayout));
|
||
AudioChannelLayout * acl =
|
||
reinterpret_cast<AudioChannelLayout *>(calloc(1, sz));
|
||
assert(acl); // Assert the allocation works.
|
||
return unique_ptr<AudioChannelLayout, decltype(&free)>(acl, free);
|
||
}
|
||
|
||
enum class io_side {
|
||
INPUT,
|
||
OUTPUT,
|
||
};
|
||
|
||
static char const *
|
||
to_string(io_side side)
|
||
{
|
||
switch (side) {
|
||
case io_side::INPUT:
|
||
return "input";
|
||
case io_side::OUTPUT:
|
||
return "output";
|
||
}
|
||
}
|
||
|
||
struct device_info {
|
||
AudioDeviceID id = kAudioObjectUnknown;
|
||
device_flags_value flags = DEV_UNKNOWN;
|
||
};
|
||
|
||
struct property_listener {
|
||
AudioDeviceID device_id;
|
||
const AudioObjectPropertyAddress * property_address;
|
||
AudioObjectPropertyListenerProc callback;
|
||
cubeb_stream * stream;
|
||
|
||
property_listener(AudioDeviceID id,
|
||
const AudioObjectPropertyAddress * address,
|
||
AudioObjectPropertyListenerProc proc, cubeb_stream * stm)
|
||
: device_id(id), property_address(address), callback(proc), stream(stm)
|
||
{
|
||
}
|
||
};
|
||
|
||
struct cubeb_stream {
|
||
explicit cubeb_stream(cubeb * context);
|
||
|
||
/* Note: Must match cubeb_stream layout in cubeb.c. */
|
||
cubeb * context;
|
||
void * user_ptr = nullptr;
|
||
/**/
|
||
|
||
cubeb_data_callback data_callback = nullptr;
|
||
cubeb_state_callback state_callback = nullptr;
|
||
cubeb_device_changed_callback device_changed_callback = nullptr;
|
||
owned_critical_section device_changed_callback_lock;
|
||
/* Stream creation parameters */
|
||
cubeb_stream_params input_stream_params = {CUBEB_SAMPLE_FLOAT32NE, 0, 0,
|
||
CUBEB_LAYOUT_UNDEFINED,
|
||
CUBEB_STREAM_PREF_NONE};
|
||
cubeb_stream_params output_stream_params = {CUBEB_SAMPLE_FLOAT32NE, 0, 0,
|
||
CUBEB_LAYOUT_UNDEFINED,
|
||
CUBEB_STREAM_PREF_NONE};
|
||
device_info input_device;
|
||
device_info output_device;
|
||
/* Format descriptions */
|
||
AudioStreamBasicDescription input_desc;
|
||
AudioStreamBasicDescription output_desc;
|
||
/* I/O AudioUnits */
|
||
AudioUnit input_unit = nullptr;
|
||
AudioUnit output_unit = nullptr;
|
||
/* I/O device sample rate */
|
||
Float64 input_hw_rate = 0;
|
||
Float64 output_hw_rate = 0;
|
||
/* Expected I/O thread interleave,
|
||
* calculated from I/O hw rate. */
|
||
int expected_output_callbacks_in_a_row = 0;
|
||
owned_critical_section mutex;
|
||
// Hold the input samples in every input callback iteration.
|
||
// Only accessed on input/output callback thread and during initial configure.
|
||
unique_ptr<auto_array_wrapper> input_linear_buffer;
|
||
/* Frame counters */
|
||
atomic<uint64_t> frames_played{0};
|
||
uint64_t frames_queued = 0;
|
||
// How many frames got read from the input since the stream started (includes
|
||
// padded silence)
|
||
atomic<int64_t> frames_read{0};
|
||
// How many frames got written to the output device since the stream started
|
||
atomic<int64_t> frames_written{0};
|
||
atomic<bool> shutdown{true};
|
||
atomic<bool> draining{false};
|
||
atomic<bool> reinit_pending{false};
|
||
atomic<bool> destroy_pending{false};
|
||
/* Latency requested by the user. */
|
||
uint32_t latency_frames = 0;
|
||
atomic<uint32_t> current_latency_frames{0};
|
||
atomic<uint32_t> total_output_latency_frames{0};
|
||
unique_ptr<cubeb_resampler, decltype(&cubeb_resampler_destroy)> resampler;
|
||
/* This is true if a device change callback is currently running. */
|
||
atomic<bool> switching_device{false};
|
||
atomic<bool> buffer_size_change_state{false};
|
||
AudioDeviceID aggregate_device_id =
|
||
kAudioObjectUnknown; // the aggregate device id
|
||
AudioObjectID plugin_id =
|
||
kAudioObjectUnknown; // used to create aggregate device
|
||
/* Mixer interface */
|
||
unique_ptr<cubeb_mixer, decltype(&cubeb_mixer_destroy)> mixer;
|
||
/* Buffer where remixing/resampling will occur when upmixing is required */
|
||
/* Only accessed from callback thread */
|
||
unique_ptr<uint8_t[]> temp_buffer;
|
||
size_t temp_buffer_size = 0; // size in bytes.
|
||
/* Listeners indicating what system events are monitored. */
|
||
unique_ptr<property_listener> default_input_listener;
|
||
unique_ptr<property_listener> default_output_listener;
|
||
unique_ptr<property_listener> input_alive_listener;
|
||
unique_ptr<property_listener> input_source_listener;
|
||
unique_ptr<property_listener> output_source_listener;
|
||
};
|
||
|
||
bool
|
||
has_input(cubeb_stream * stm)
|
||
{
|
||
return stm->input_stream_params.rate != 0;
|
||
}
|
||
|
||
bool
|
||
has_output(cubeb_stream * stm)
|
||
{
|
||
return stm->output_stream_params.rate != 0;
|
||
}
|
||
|
||
cubeb_channel
|
||
channel_label_to_cubeb_channel(UInt32 label)
|
||
{
|
||
switch (label) {
|
||
case kAudioChannelLabel_Left:
|
||
return CHANNEL_FRONT_LEFT;
|
||
case kAudioChannelLabel_Right:
|
||
return CHANNEL_FRONT_RIGHT;
|
||
case kAudioChannelLabel_Center:
|
||
return CHANNEL_FRONT_CENTER;
|
||
case kAudioChannelLabel_LFEScreen:
|
||
return CHANNEL_LOW_FREQUENCY;
|
||
case kAudioChannelLabel_LeftSurround:
|
||
return CHANNEL_BACK_LEFT;
|
||
case kAudioChannelLabel_RightSurround:
|
||
return CHANNEL_BACK_RIGHT;
|
||
case kAudioChannelLabel_LeftCenter:
|
||
return CHANNEL_FRONT_LEFT_OF_CENTER;
|
||
case kAudioChannelLabel_RightCenter:
|
||
return CHANNEL_FRONT_RIGHT_OF_CENTER;
|
||
case kAudioChannelLabel_CenterSurround:
|
||
return CHANNEL_BACK_CENTER;
|
||
case kAudioChannelLabel_LeftSurroundDirect:
|
||
return CHANNEL_SIDE_LEFT;
|
||
case kAudioChannelLabel_RightSurroundDirect:
|
||
return CHANNEL_SIDE_RIGHT;
|
||
case kAudioChannelLabel_TopCenterSurround:
|
||
return CHANNEL_TOP_CENTER;
|
||
case kAudioChannelLabel_VerticalHeightLeft:
|
||
return CHANNEL_TOP_FRONT_LEFT;
|
||
case kAudioChannelLabel_VerticalHeightCenter:
|
||
return CHANNEL_TOP_FRONT_CENTER;
|
||
case kAudioChannelLabel_VerticalHeightRight:
|
||
return CHANNEL_TOP_FRONT_RIGHT;
|
||
case kAudioChannelLabel_TopBackLeft:
|
||
return CHANNEL_TOP_BACK_LEFT;
|
||
case kAudioChannelLabel_TopBackCenter:
|
||
return CHANNEL_TOP_BACK_CENTER;
|
||
case kAudioChannelLabel_TopBackRight:
|
||
return CHANNEL_TOP_BACK_RIGHT;
|
||
default:
|
||
return CHANNEL_UNKNOWN;
|
||
}
|
||
}
|
||
|
||
AudioChannelLabel
|
||
cubeb_channel_to_channel_label(cubeb_channel channel)
|
||
{
|
||
switch (channel) {
|
||
case CHANNEL_FRONT_LEFT:
|
||
return kAudioChannelLabel_Left;
|
||
case CHANNEL_FRONT_RIGHT:
|
||
return kAudioChannelLabel_Right;
|
||
case CHANNEL_FRONT_CENTER:
|
||
return kAudioChannelLabel_Center;
|
||
case CHANNEL_LOW_FREQUENCY:
|
||
return kAudioChannelLabel_LFEScreen;
|
||
case CHANNEL_BACK_LEFT:
|
||
return kAudioChannelLabel_LeftSurround;
|
||
case CHANNEL_BACK_RIGHT:
|
||
return kAudioChannelLabel_RightSurround;
|
||
case CHANNEL_FRONT_LEFT_OF_CENTER:
|
||
return kAudioChannelLabel_LeftCenter;
|
||
case CHANNEL_FRONT_RIGHT_OF_CENTER:
|
||
return kAudioChannelLabel_RightCenter;
|
||
case CHANNEL_BACK_CENTER:
|
||
return kAudioChannelLabel_CenterSurround;
|
||
case CHANNEL_SIDE_LEFT:
|
||
return kAudioChannelLabel_LeftSurroundDirect;
|
||
case CHANNEL_SIDE_RIGHT:
|
||
return kAudioChannelLabel_RightSurroundDirect;
|
||
case CHANNEL_TOP_CENTER:
|
||
return kAudioChannelLabel_TopCenterSurround;
|
||
case CHANNEL_TOP_FRONT_LEFT:
|
||
return kAudioChannelLabel_VerticalHeightLeft;
|
||
case CHANNEL_TOP_FRONT_CENTER:
|
||
return kAudioChannelLabel_VerticalHeightCenter;
|
||
case CHANNEL_TOP_FRONT_RIGHT:
|
||
return kAudioChannelLabel_VerticalHeightRight;
|
||
case CHANNEL_TOP_BACK_LEFT:
|
||
return kAudioChannelLabel_TopBackLeft;
|
||
case CHANNEL_TOP_BACK_CENTER:
|
||
return kAudioChannelLabel_TopBackCenter;
|
||
case CHANNEL_TOP_BACK_RIGHT:
|
||
return kAudioChannelLabel_TopBackRight;
|
||
default:
|
||
return kAudioChannelLabel_Unknown;
|
||
}
|
||
}
|
||
|
||
bool
|
||
is_common_sample_rate(Float64 sample_rate)
|
||
{
|
||
/* Some commonly used sample rates and their multiples and divisors. */
|
||
return sample_rate == 8000 || sample_rate == 16000 || sample_rate == 22050 ||
|
||
sample_rate == 32000 || sample_rate == 44100 || sample_rate == 48000 ||
|
||
sample_rate == 88200 || sample_rate == 96000;
|
||
}
|
||
|
||
#if TARGET_OS_IPHONE
|
||
typedef UInt32 AudioDeviceID;
|
||
typedef UInt32 AudioObjectID;
|
||
|
||
#define AudioGetCurrentHostTime mach_absolute_time
|
||
|
||
#endif
|
||
|
||
uint64_t
|
||
ConvertHostTimeToNanos(uint64_t host_time)
|
||
{
|
||
static struct mach_timebase_info timebase_info;
|
||
static bool initialized = false;
|
||
if (!initialized) {
|
||
mach_timebase_info(&timebase_info);
|
||
initialized = true;
|
||
}
|
||
|
||
long double answer = host_time;
|
||
if (timebase_info.numer != timebase_info.denom) {
|
||
answer *= timebase_info.numer;
|
||
answer /= timebase_info.denom;
|
||
}
|
||
return (uint64_t)answer;
|
||
}
|
||
|
||
static void
|
||
audiounit_increment_active_streams(cubeb * ctx)
|
||
{
|
||
ctx->mutex.assert_current_thread_owns();
|
||
ctx->active_streams += 1;
|
||
}
|
||
|
||
static void
|
||
audiounit_decrement_active_streams(cubeb * ctx)
|
||
{
|
||
ctx->mutex.assert_current_thread_owns();
|
||
ctx->active_streams -= 1;
|
||
}
|
||
|
||
static int
|
||
audiounit_active_streams(cubeb * ctx)
|
||
{
|
||
ctx->mutex.assert_current_thread_owns();
|
||
return ctx->active_streams;
|
||
}
|
||
|
||
static void
|
||
audiounit_set_global_latency(cubeb * ctx, uint32_t latency_frames)
|
||
{
|
||
ctx->mutex.assert_current_thread_owns();
|
||
assert(audiounit_active_streams(ctx) == 1);
|
||
ctx->global_latency_frames = latency_frames;
|
||
}
|
||
|
||
static void
|
||
audiounit_make_silent(AudioBuffer * ioData)
|
||
{
|
||
assert(ioData);
|
||
assert(ioData->mData);
|
||
memset(ioData->mData, 0, ioData->mDataByteSize);
|
||
}
|
||
|
||
static OSStatus
|
||
audiounit_render_input(cubeb_stream * stm, AudioUnitRenderActionFlags * flags,
|
||
AudioTimeStamp const * tstamp, UInt32 bus,
|
||
UInt32 input_frames)
|
||
{
|
||
/* Create the AudioBufferList to store input. */
|
||
AudioBufferList input_buffer_list;
|
||
input_buffer_list.mBuffers[0].mDataByteSize =
|
||
stm->input_desc.mBytesPerFrame * input_frames;
|
||
input_buffer_list.mBuffers[0].mData = nullptr;
|
||
input_buffer_list.mBuffers[0].mNumberChannels =
|
||
stm->input_desc.mChannelsPerFrame;
|
||
input_buffer_list.mNumberBuffers = 1;
|
||
|
||
/* Render input samples */
|
||
OSStatus r = AudioUnitRender(stm->input_unit, flags, tstamp, bus,
|
||
input_frames, &input_buffer_list);
|
||
|
||
if (r != noErr) {
|
||
LOG("AudioUnitRender rv=%d", r);
|
||
if (r != kAudioUnitErr_CannotDoInCurrentContext) {
|
||
return r;
|
||
}
|
||
if (stm->output_unit) {
|
||
// kAudioUnitErr_CannotDoInCurrentContext is returned when using a BT
|
||
// headset and the profile is changed from A2DP to HFP/HSP. The previous
|
||
// output device is no longer valid and must be reset.
|
||
audiounit_reinit_stream_async(stm, DEV_INPUT | DEV_OUTPUT);
|
||
}
|
||
// For now state that no error occurred and feed silence, stream will be
|
||
// resumed once reinit has completed.
|
||
ALOGV("(%p) input: reinit pending feeding silence instead", stm);
|
||
stm->input_linear_buffer->push_silence(input_frames *
|
||
stm->input_desc.mChannelsPerFrame);
|
||
} else {
|
||
/* Copy input data in linear buffer. */
|
||
stm->input_linear_buffer->push(input_buffer_list.mBuffers[0].mData,
|
||
input_frames *
|
||
stm->input_desc.mChannelsPerFrame);
|
||
}
|
||
|
||
/* Advance input frame counter. */
|
||
assert(input_frames > 0);
|
||
stm->frames_read += input_frames;
|
||
|
||
ALOGV("(%p) input: buffers %u, size %u, channels %u, rendered frames %d, "
|
||
"total frames %lu.",
|
||
stm, (unsigned int)input_buffer_list.mNumberBuffers,
|
||
(unsigned int)input_buffer_list.mBuffers[0].mDataByteSize,
|
||
(unsigned int)input_buffer_list.mBuffers[0].mNumberChannels,
|
||
(unsigned int)input_frames,
|
||
stm->input_linear_buffer->length() / stm->input_desc.mChannelsPerFrame);
|
||
|
||
return noErr;
|
||
}
|
||
|
||
static OSStatus
|
||
audiounit_input_callback(void * user_ptr, AudioUnitRenderActionFlags * flags,
|
||
AudioTimeStamp const * tstamp, UInt32 bus,
|
||
UInt32 input_frames, AudioBufferList * /* bufs */)
|
||
{
|
||
cubeb_stream * stm = static_cast<cubeb_stream *>(user_ptr);
|
||
|
||
assert(stm->input_unit != NULL);
|
||
assert(AU_IN_BUS == bus);
|
||
|
||
if (stm->shutdown) {
|
||
ALOG("(%p) input shutdown", stm);
|
||
return noErr;
|
||
}
|
||
|
||
if (stm->draining) {
|
||
OSStatus r = AudioOutputUnitStop(stm->input_unit);
|
||
assert(r == 0);
|
||
// Only fire state callback in input-only stream. For duplex stream,
|
||
// the state callback will be fired in output callback.
|
||
if (stm->output_unit == NULL) {
|
||
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_DRAINED);
|
||
}
|
||
return noErr;
|
||
}
|
||
|
||
OSStatus r = audiounit_render_input(stm, flags, tstamp, bus, input_frames);
|
||
if (r != noErr) {
|
||
return r;
|
||
}
|
||
|
||
// Full Duplex. We'll call data_callback in the AudioUnit output callback.
|
||
if (stm->output_unit != NULL) {
|
||
return noErr;
|
||
}
|
||
|
||
/* Input only. Call the user callback through resampler.
|
||
Resampler will deliver input buffer in the correct rate. */
|
||
assert(input_frames <= stm->input_linear_buffer->length() /
|
||
stm->input_desc.mChannelsPerFrame);
|
||
long total_input_frames =
|
||
stm->input_linear_buffer->length() / stm->input_desc.mChannelsPerFrame;
|
||
long outframes = cubeb_resampler_fill(stm->resampler.get(),
|
||
stm->input_linear_buffer->data(),
|
||
&total_input_frames, NULL, 0);
|
||
if (outframes < 0) {
|
||
stm->shutdown = true;
|
||
OSStatus r = AudioOutputUnitStop(stm->input_unit);
|
||
assert(r == 0);
|
||
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
|
||
return noErr;
|
||
}
|
||
stm->draining = outframes < total_input_frames;
|
||
|
||
// Reset input buffer
|
||
stm->input_linear_buffer->clear();
|
||
|
||
return noErr;
|
||
}
|
||
|
||
static void
|
||
audiounit_mix_output_buffer(cubeb_stream * stm, size_t output_frames,
|
||
void * input_buffer, size_t input_buffer_size,
|
||
void * output_buffer, size_t output_buffer_size)
|
||
{
|
||
assert(input_buffer_size >=
|
||
cubeb_sample_size(stm->output_stream_params.format) *
|
||
stm->output_stream_params.channels * output_frames);
|
||
assert(output_buffer_size >= stm->output_desc.mBytesPerFrame * output_frames);
|
||
|
||
int r = cubeb_mixer_mix(stm->mixer.get(), output_frames, input_buffer,
|
||
input_buffer_size, output_buffer, output_buffer_size);
|
||
if (r != 0) {
|
||
LOG("Remix error = %d", r);
|
||
}
|
||
}
|
||
|
||
// Return how many input frames (sampled at input_hw_rate) are needed to provide
|
||
// output_frames (sampled at output_stream_params.rate)
|
||
static int64_t
|
||
minimum_resampling_input_frames(cubeb_stream * stm, uint32_t output_frames)
|
||
{
|
||
if (stm->input_hw_rate == stm->output_stream_params.rate) {
|
||
// Fast path.
|
||
return output_frames;
|
||
}
|
||
return ceil(stm->input_hw_rate * output_frames /
|
||
stm->output_stream_params.rate);
|
||
}
|
||
|
||
static OSStatus
|
||
audiounit_output_callback(void * user_ptr,
|
||
AudioUnitRenderActionFlags * /* flags */,
|
||
AudioTimeStamp const * tstamp, UInt32 bus,
|
||
UInt32 output_frames, AudioBufferList * outBufferList)
|
||
{
|
||
assert(AU_OUT_BUS == bus);
|
||
assert(outBufferList->mNumberBuffers == 1);
|
||
|
||
cubeb_stream * stm = static_cast<cubeb_stream *>(user_ptr);
|
||
|
||
uint64_t now = ConvertHostTimeToNanos(mach_absolute_time());
|
||
uint64_t audio_output_time = ConvertHostTimeToNanos(tstamp->mHostTime);
|
||
uint64_t output_latency_ns = audio_output_time - now;
|
||
|
||
const int ns2s = 1e9;
|
||
// The total output latency is the timestamp difference + the stream latency +
|
||
// the hardware latency.
|
||
stm->total_output_latency_frames =
|
||
output_latency_ns * stm->output_hw_rate / ns2s +
|
||
stm->current_latency_frames;
|
||
|
||
ALOGV("(%p) output: buffers %u, size %u, channels %u, frames %u, total input "
|
||
"frames %lu.",
|
||
stm, (unsigned int)outBufferList->mNumberBuffers,
|
||
(unsigned int)outBufferList->mBuffers[0].mDataByteSize,
|
||
(unsigned int)outBufferList->mBuffers[0].mNumberChannels,
|
||
(unsigned int)output_frames,
|
||
has_input(stm) ? stm->input_linear_buffer->length() /
|
||
stm->input_desc.mChannelsPerFrame
|
||
: 0);
|
||
|
||
long input_frames = 0;
|
||
void *output_buffer = NULL, *input_buffer = NULL;
|
||
|
||
if (stm->shutdown) {
|
||
ALOG("(%p) output shutdown.", stm);
|
||
audiounit_make_silent(&outBufferList->mBuffers[0]);
|
||
return noErr;
|
||
}
|
||
|
||
if (stm->draining) {
|
||
OSStatus r = AudioOutputUnitStop(stm->output_unit);
|
||
assert(r == 0);
|
||
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_DRAINED);
|
||
audiounit_make_silent(&outBufferList->mBuffers[0]);
|
||
return noErr;
|
||
}
|
||
|
||
/* Get output buffer. */
|
||
if (stm->mixer) {
|
||
// If remixing needs to occur, we can't directly work in our final
|
||
// destination buffer as data may be overwritten or too small to start with.
|
||
size_t size_needed = output_frames * stm->output_stream_params.channels *
|
||
cubeb_sample_size(stm->output_stream_params.format);
|
||
if (stm->temp_buffer_size < size_needed) {
|
||
stm->temp_buffer.reset(new uint8_t[size_needed]);
|
||
stm->temp_buffer_size = size_needed;
|
||
}
|
||
output_buffer = stm->temp_buffer.get();
|
||
} else {
|
||
output_buffer = outBufferList->mBuffers[0].mData;
|
||
}
|
||
|
||
stm->frames_written += output_frames;
|
||
|
||
/* If Full duplex get also input buffer */
|
||
if (stm->input_unit != NULL) {
|
||
/* If the output callback came first and this is a duplex stream, we need to
|
||
* fill in some additional silence in the resampler.
|
||
* Otherwise, if we had more than expected callbacks in a row, or we're
|
||
* currently switching, we add some silence as well to compensate for the
|
||
* fact that we're lacking some input data. */
|
||
uint32_t input_frames_needed =
|
||
minimum_resampling_input_frames(stm, stm->frames_written);
|
||
long missing_frames = input_frames_needed - stm->frames_read;
|
||
if (missing_frames > 0) {
|
||
stm->input_linear_buffer->push_silence(missing_frames *
|
||
stm->input_desc.mChannelsPerFrame);
|
||
stm->frames_read = input_frames_needed;
|
||
|
||
ALOG("(%p) %s pushed %ld frames of input silence.", stm,
|
||
stm->frames_read == 0 ? "Input hasn't started,"
|
||
: stm->switching_device ? "Device switching,"
|
||
: "Drop out,",
|
||
missing_frames);
|
||
}
|
||
input_buffer = stm->input_linear_buffer->data();
|
||
// Number of input frames in the buffer. It will change to actually used
|
||
// frames inside fill
|
||
input_frames =
|
||
stm->input_linear_buffer->length() / stm->input_desc.mChannelsPerFrame;
|
||
}
|
||
|
||
/* Call user callback through resampler. */
|
||
long outframes = cubeb_resampler_fill(stm->resampler.get(), input_buffer,
|
||
input_buffer ? &input_frames : NULL,
|
||
output_buffer, output_frames);
|
||
|
||
if (input_buffer) {
|
||
// Pop from the buffer the frames used by the the resampler.
|
||
stm->input_linear_buffer->pop(input_frames *
|
||
stm->input_desc.mChannelsPerFrame);
|
||
}
|
||
|
||
if (outframes < 0 || outframes > output_frames) {
|
||
stm->shutdown = true;
|
||
OSStatus r = AudioOutputUnitStop(stm->output_unit);
|
||
assert(r == 0);
|
||
if (stm->input_unit) {
|
||
r = AudioOutputUnitStop(stm->input_unit);
|
||
assert(r == 0);
|
||
}
|
||
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
|
||
audiounit_make_silent(&outBufferList->mBuffers[0]);
|
||
return noErr;
|
||
}
|
||
|
||
stm->draining = (UInt32)outframes < output_frames;
|
||
stm->frames_played = stm->frames_queued;
|
||
stm->frames_queued += outframes;
|
||
|
||
/* Post process output samples. */
|
||
if (stm->draining) {
|
||
/* Clear missing frames (silence) */
|
||
size_t channels = stm->output_stream_params.channels;
|
||
size_t missing_samples = (output_frames - outframes) * channels;
|
||
size_t size_sample = cubeb_sample_size(stm->output_stream_params.format);
|
||
/* number of bytes that have been filled with valid audio by the callback.
|
||
*/
|
||
size_t audio_byte_count = outframes * channels * size_sample;
|
||
PodZero((uint8_t *)output_buffer + audio_byte_count,
|
||
missing_samples * size_sample);
|
||
}
|
||
|
||
/* Mixing */
|
||
if (stm->mixer) {
|
||
audiounit_mix_output_buffer(stm, output_frames, output_buffer,
|
||
stm->temp_buffer_size,
|
||
outBufferList->mBuffers[0].mData,
|
||
outBufferList->mBuffers[0].mDataByteSize);
|
||
}
|
||
|
||
return noErr;
|
||
}
|
||
|
||
extern "C" {
|
||
int
|
||
audiounit_init(cubeb ** context, char const * /* context_name */)
|
||
{
|
||
#if !TARGET_OS_IPHONE
|
||
cubeb_set_coreaudio_notification_runloop();
|
||
#endif
|
||
|
||
*context = new cubeb;
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
}
|
||
|
||
static char const *
|
||
audiounit_get_backend_id(cubeb * /* ctx */)
|
||
{
|
||
return "audiounit";
|
||
}
|
||
|
||
#if !TARGET_OS_IPHONE
|
||
|
||
static int
|
||
audiounit_stream_get_volume(cubeb_stream * stm, float * volume);
|
||
static int
|
||
audiounit_stream_set_volume(cubeb_stream * stm, float volume);
|
||
|
||
static int
|
||
audiounit_set_device_info(cubeb_stream * stm, AudioDeviceID id, io_side side)
|
||
{
|
||
assert(stm);
|
||
|
||
device_info * info = nullptr;
|
||
cubeb_device_type type = CUBEB_DEVICE_TYPE_UNKNOWN;
|
||
|
||
if (side == io_side::INPUT) {
|
||
info = &stm->input_device;
|
||
type = CUBEB_DEVICE_TYPE_INPUT;
|
||
} else if (side == io_side::OUTPUT) {
|
||
info = &stm->output_device;
|
||
type = CUBEB_DEVICE_TYPE_OUTPUT;
|
||
}
|
||
memset(info, 0, sizeof(device_info));
|
||
info->id = id;
|
||
|
||
if (side == io_side::INPUT) {
|
||
info->flags |= DEV_INPUT;
|
||
} else if (side == io_side::OUTPUT) {
|
||
info->flags |= DEV_OUTPUT;
|
||
}
|
||
|
||
AudioDeviceID default_device_id = audiounit_get_default_device_id(type);
|
||
if (default_device_id == kAudioObjectUnknown) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
if (id == kAudioObjectUnknown) {
|
||
info->id = default_device_id;
|
||
info->flags |= DEV_SELECTED_DEFAULT;
|
||
}
|
||
|
||
if (info->id == default_device_id) {
|
||
info->flags |= DEV_SYSTEM_DEFAULT;
|
||
}
|
||
|
||
assert(info->id);
|
||
assert(info->flags & DEV_INPUT && !(info->flags & DEV_OUTPUT) ||
|
||
!(info->flags & DEV_INPUT) && info->flags & DEV_OUTPUT);
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_reinit_stream(cubeb_stream * stm, device_flags_value flags)
|
||
{
|
||
auto_lock context_lock(stm->context->mutex);
|
||
assert((flags & DEV_INPUT && stm->input_unit) ||
|
||
(flags & DEV_OUTPUT && stm->output_unit));
|
||
if (!stm->shutdown) {
|
||
audiounit_stream_stop_internal(stm);
|
||
}
|
||
|
||
int r = audiounit_uninstall_device_changed_callback(stm);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Could not uninstall all device change listeners.", stm);
|
||
}
|
||
|
||
{
|
||
auto_lock lock(stm->mutex);
|
||
float volume = 0.0;
|
||
int vol_rv = CUBEB_ERROR;
|
||
if (stm->output_unit) {
|
||
vol_rv = audiounit_stream_get_volume(stm, &volume);
|
||
}
|
||
|
||
audiounit_close_stream(stm);
|
||
|
||
/* Reinit occurs in one of the following case:
|
||
* - When the device is not alive any more
|
||
* - When the default system device change.
|
||
* - The bluetooth device changed from A2DP to/from HFP/HSP profile
|
||
* We first attempt to re-use the same device id, should that fail we will
|
||
* default to the (potentially new) default device. */
|
||
AudioDeviceID input_device =
|
||
flags & DEV_INPUT ? stm->input_device.id : kAudioObjectUnknown;
|
||
if (flags & DEV_INPUT) {
|
||
r = audiounit_set_device_info(stm, input_device, io_side::INPUT);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Set input device info failed. This can happen when last "
|
||
"media device is unplugged",
|
||
stm);
|
||
return CUBEB_ERROR;
|
||
}
|
||
}
|
||
|
||
/* Always use the default output on reinit. This is not correct in every
|
||
* case but it is sufficient for Firefox and prevent reinit from reporting
|
||
* failures. It will change soon when reinit mechanism will be updated. */
|
||
r = audiounit_set_device_info(stm, kAudioObjectUnknown, io_side::OUTPUT);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Set output device info failed. This can happen when last media "
|
||
"device is unplugged",
|
||
stm);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
if (audiounit_setup_stream(stm) != CUBEB_OK) {
|
||
LOG("(%p) Stream reinit failed.", stm);
|
||
if (flags & DEV_INPUT && input_device != kAudioObjectUnknown) {
|
||
// Attempt to re-use the same device-id failed, so attempt again with
|
||
// default input device.
|
||
audiounit_close_stream(stm);
|
||
if (audiounit_set_device_info(stm, kAudioObjectUnknown,
|
||
io_side::INPUT) != CUBEB_OK ||
|
||
audiounit_setup_stream(stm) != CUBEB_OK) {
|
||
LOG("(%p) Second stream reinit failed.", stm);
|
||
return CUBEB_ERROR;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (vol_rv == CUBEB_OK) {
|
||
audiounit_stream_set_volume(stm, volume);
|
||
}
|
||
|
||
// If the stream was running, start it again.
|
||
if (!stm->shutdown) {
|
||
r = audiounit_stream_start_internal(stm);
|
||
if (r != CUBEB_OK) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
}
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static void
|
||
audiounit_reinit_stream_async(cubeb_stream * stm, device_flags_value flags)
|
||
{
|
||
if (std::atomic_exchange(&stm->reinit_pending, true)) {
|
||
// A reinit task is already pending, nothing more to do.
|
||
ALOG("(%p) re-init stream task already pending, cancelling request", stm);
|
||
return;
|
||
}
|
||
|
||
// Use a new thread, through the queue, to avoid deadlock when calling
|
||
// Get/SetProperties method from inside notify callback
|
||
dispatch_async(stm->context->serial_queue, ^() {
|
||
if (stm->destroy_pending) {
|
||
ALOG("(%p) stream pending destroy, cancelling reinit task", stm);
|
||
return;
|
||
}
|
||
|
||
if (audiounit_reinit_stream(stm, flags) != CUBEB_OK) {
|
||
if (audiounit_uninstall_system_changed_callback(stm) != CUBEB_OK) {
|
||
LOG("(%p) Could not uninstall system changed callback", stm);
|
||
}
|
||
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
|
||
LOG("(%p) Could not reopen the stream after switching.", stm);
|
||
}
|
||
stm->switching_device = false;
|
||
stm->reinit_pending = false;
|
||
});
|
||
}
|
||
|
||
static char const *
|
||
event_addr_to_string(AudioObjectPropertySelector selector)
|
||
{
|
||
switch (selector) {
|
||
case kAudioHardwarePropertyDefaultOutputDevice:
|
||
return "kAudioHardwarePropertyDefaultOutputDevice";
|
||
case kAudioHardwarePropertyDefaultInputDevice:
|
||
return "kAudioHardwarePropertyDefaultInputDevice";
|
||
case kAudioDevicePropertyDeviceIsAlive:
|
||
return "kAudioDevicePropertyDeviceIsAlive";
|
||
case kAudioDevicePropertyDataSource:
|
||
return "kAudioDevicePropertyDataSource";
|
||
default:
|
||
return "Unknown";
|
||
}
|
||
}
|
||
|
||
static OSStatus
|
||
audiounit_property_listener_callback(
|
||
AudioObjectID id, UInt32 address_count,
|
||
const AudioObjectPropertyAddress * addresses, void * user)
|
||
{
|
||
cubeb_stream * stm = (cubeb_stream *)user;
|
||
if (stm->switching_device) {
|
||
LOG("Switching is already taking place. Skip Event %s for id=%d",
|
||
event_addr_to_string(addresses[0].mSelector), id);
|
||
return noErr;
|
||
}
|
||
stm->switching_device = true;
|
||
|
||
LOG("(%p) Audio device changed, %u events.", stm,
|
||
(unsigned int)address_count);
|
||
for (UInt32 i = 0; i < address_count; i++) {
|
||
switch (addresses[i].mSelector) {
|
||
case kAudioHardwarePropertyDefaultOutputDevice: {
|
||
LOG("Event[%u] - mSelector == kAudioHardwarePropertyDefaultOutputDevice "
|
||
"for id=%d",
|
||
(unsigned int)i, id);
|
||
} break;
|
||
case kAudioHardwarePropertyDefaultInputDevice: {
|
||
LOG("Event[%u] - mSelector == kAudioHardwarePropertyDefaultInputDevice "
|
||
"for id=%d",
|
||
(unsigned int)i, id);
|
||
} break;
|
||
case kAudioDevicePropertyDeviceIsAlive: {
|
||
LOG("Event[%u] - mSelector == kAudioDevicePropertyDeviceIsAlive for "
|
||
"id=%d",
|
||
(unsigned int)i, id);
|
||
// If this is the default input device ignore the event,
|
||
// kAudioHardwarePropertyDefaultInputDevice will take care of the switch
|
||
if (stm->input_device.flags & DEV_SYSTEM_DEFAULT) {
|
||
LOG("It's the default input device, ignore the event");
|
||
stm->switching_device = false;
|
||
return noErr;
|
||
}
|
||
} break;
|
||
case kAudioDevicePropertyDataSource: {
|
||
LOG("Event[%u] - mSelector == kAudioDevicePropertyDataSource for id=%d",
|
||
(unsigned int)i, id);
|
||
} break;
|
||
default:
|
||
LOG("Event[%u] - mSelector == Unexpected Event id %d, return",
|
||
(unsigned int)i, addresses[i].mSelector);
|
||
stm->switching_device = false;
|
||
return noErr;
|
||
}
|
||
}
|
||
|
||
// Allow restart to choose the new default
|
||
device_flags_value switch_side = DEV_UNKNOWN;
|
||
if (has_input(stm)) {
|
||
switch_side |= DEV_INPUT;
|
||
}
|
||
if (has_output(stm)) {
|
||
switch_side |= DEV_OUTPUT;
|
||
}
|
||
|
||
for (UInt32 i = 0; i < address_count; i++) {
|
||
switch (addresses[i].mSelector) {
|
||
case kAudioHardwarePropertyDefaultOutputDevice:
|
||
case kAudioHardwarePropertyDefaultInputDevice:
|
||
case kAudioDevicePropertyDeviceIsAlive:
|
||
/* fall through */
|
||
case kAudioDevicePropertyDataSource: {
|
||
auto_lock dev_cb_lock(stm->device_changed_callback_lock);
|
||
if (stm->device_changed_callback) {
|
||
stm->device_changed_callback(stm->user_ptr);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
audiounit_reinit_stream_async(stm, switch_side);
|
||
|
||
return noErr;
|
||
}
|
||
|
||
OSStatus
|
||
audiounit_add_listener(const property_listener * listener)
|
||
{
|
||
assert(listener);
|
||
return AudioObjectAddPropertyListener(listener->device_id,
|
||
listener->property_address,
|
||
listener->callback, listener->stream);
|
||
}
|
||
|
||
OSStatus
|
||
audiounit_remove_listener(const property_listener * listener)
|
||
{
|
||
assert(listener);
|
||
return AudioObjectRemovePropertyListener(
|
||
listener->device_id, listener->property_address, listener->callback,
|
||
listener->stream);
|
||
}
|
||
|
||
static int
|
||
audiounit_install_device_changed_callback(cubeb_stream * stm)
|
||
{
|
||
OSStatus rv;
|
||
int r = CUBEB_OK;
|
||
|
||
if (stm->output_unit) {
|
||
/* This event will notify us when the data source on the same device
|
||
* changes, for example when the user plugs in a normal (non-usb) headset in
|
||
* the headphone jack. */
|
||
stm->output_source_listener.reset(new property_listener(
|
||
stm->output_device.id, &OUTPUT_DATA_SOURCE_PROPERTY_ADDRESS,
|
||
&audiounit_property_listener_callback, stm));
|
||
rv = audiounit_add_listener(stm->output_source_listener.get());
|
||
if (rv != noErr) {
|
||
stm->output_source_listener.reset();
|
||
LOG("AudioObjectAddPropertyListener/output/"
|
||
"kAudioDevicePropertyDataSource rv=%d, device id=%d",
|
||
rv, stm->output_device.id);
|
||
r = CUBEB_ERROR;
|
||
}
|
||
}
|
||
|
||
if (stm->input_unit) {
|
||
/* This event will notify us when the data source on the input device
|
||
* changes. */
|
||
stm->input_source_listener.reset(new property_listener(
|
||
stm->input_device.id, &INPUT_DATA_SOURCE_PROPERTY_ADDRESS,
|
||
&audiounit_property_listener_callback, stm));
|
||
rv = audiounit_add_listener(stm->input_source_listener.get());
|
||
if (rv != noErr) {
|
||
stm->input_source_listener.reset();
|
||
LOG("AudioObjectAddPropertyListener/input/kAudioDevicePropertyDataSource "
|
||
"rv=%d, device id=%d",
|
||
rv, stm->input_device.id);
|
||
r = CUBEB_ERROR;
|
||
}
|
||
|
||
/* Event to notify when the input is going away. */
|
||
stm->input_alive_listener.reset(new property_listener(
|
||
stm->input_device.id, &DEVICE_IS_ALIVE_PROPERTY_ADDRESS,
|
||
&audiounit_property_listener_callback, stm));
|
||
rv = audiounit_add_listener(stm->input_alive_listener.get());
|
||
if (rv != noErr) {
|
||
stm->input_alive_listener.reset();
|
||
LOG("AudioObjectAddPropertyListener/input/"
|
||
"kAudioDevicePropertyDeviceIsAlive rv=%d, device id =%d",
|
||
rv, stm->input_device.id);
|
||
r = CUBEB_ERROR;
|
||
}
|
||
}
|
||
|
||
return r;
|
||
}
|
||
|
||
static int
|
||
audiounit_install_system_changed_callback(cubeb_stream * stm)
|
||
{
|
||
OSStatus r;
|
||
|
||
if (stm->output_unit) {
|
||
/* This event will notify us when the default audio device changes,
|
||
* for example when the user plugs in a USB headset and the system chooses
|
||
* it automatically as the default, or when another device is chosen in the
|
||
* dropdown list. */
|
||
stm->default_output_listener.reset(new property_listener(
|
||
kAudioObjectSystemObject, &DEFAULT_OUTPUT_DEVICE_PROPERTY_ADDRESS,
|
||
&audiounit_property_listener_callback, stm));
|
||
r = audiounit_add_listener(stm->default_output_listener.get());
|
||
if (r != noErr) {
|
||
stm->default_output_listener.reset();
|
||
LOG("AudioObjectAddPropertyListener/output/"
|
||
"kAudioHardwarePropertyDefaultOutputDevice rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
}
|
||
|
||
if (stm->input_unit) {
|
||
/* This event will notify us when the default input device changes. */
|
||
stm->default_input_listener.reset(new property_listener(
|
||
kAudioObjectSystemObject, &DEFAULT_INPUT_DEVICE_PROPERTY_ADDRESS,
|
||
&audiounit_property_listener_callback, stm));
|
||
r = audiounit_add_listener(stm->default_input_listener.get());
|
||
if (r != noErr) {
|
||
stm->default_input_listener.reset();
|
||
LOG("AudioObjectAddPropertyListener/input/"
|
||
"kAudioHardwarePropertyDefaultInputDevice rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_uninstall_device_changed_callback(cubeb_stream * stm)
|
||
{
|
||
OSStatus rv;
|
||
// Failing to uninstall listeners is not a fatal error.
|
||
int r = CUBEB_OK;
|
||
|
||
if (stm->output_source_listener) {
|
||
rv = audiounit_remove_listener(stm->output_source_listener.get());
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectRemovePropertyListener/output/"
|
||
"kAudioDevicePropertyDataSource rv=%d, device id=%d",
|
||
rv, stm->output_device.id);
|
||
r = CUBEB_ERROR;
|
||
}
|
||
stm->output_source_listener.reset();
|
||
}
|
||
|
||
if (stm->input_source_listener) {
|
||
rv = audiounit_remove_listener(stm->input_source_listener.get());
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectRemovePropertyListener/input/"
|
||
"kAudioDevicePropertyDataSource rv=%d, device id=%d",
|
||
rv, stm->input_device.id);
|
||
r = CUBEB_ERROR;
|
||
}
|
||
stm->input_source_listener.reset();
|
||
}
|
||
|
||
if (stm->input_alive_listener) {
|
||
rv = audiounit_remove_listener(stm->input_alive_listener.get());
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectRemovePropertyListener/input/"
|
||
"kAudioDevicePropertyDeviceIsAlive rv=%d, device id=%d",
|
||
rv, stm->input_device.id);
|
||
r = CUBEB_ERROR;
|
||
}
|
||
stm->input_alive_listener.reset();
|
||
}
|
||
|
||
return r;
|
||
}
|
||
|
||
static int
|
||
audiounit_uninstall_system_changed_callback(cubeb_stream * stm)
|
||
{
|
||
OSStatus r;
|
||
|
||
if (stm->default_output_listener) {
|
||
r = audiounit_remove_listener(stm->default_output_listener.get());
|
||
if (r != noErr) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
stm->default_output_listener.reset();
|
||
}
|
||
|
||
if (stm->default_input_listener) {
|
||
r = audiounit_remove_listener(stm->default_input_listener.get());
|
||
if (r != noErr) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
stm->default_input_listener.reset();
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
/* Get the acceptable buffer size (in frames) that this device can work with. */
|
||
static int
|
||
audiounit_get_acceptable_latency_range(AudioValueRange * latency_range)
|
||
{
|
||
UInt32 size;
|
||
OSStatus r;
|
||
AudioDeviceID output_device_id;
|
||
AudioObjectPropertyAddress output_device_buffer_size_range = {
|
||
kAudioDevicePropertyBufferFrameSizeRange, kAudioDevicePropertyScopeOutput,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
output_device_id = audiounit_get_default_device_id(CUBEB_DEVICE_TYPE_OUTPUT);
|
||
if (output_device_id == kAudioObjectUnknown) {
|
||
LOG("Could not get default output device id.");
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
/* Get the buffer size range this device supports */
|
||
size = sizeof(*latency_range);
|
||
|
||
r = AudioObjectGetPropertyData(output_device_id,
|
||
&output_device_buffer_size_range, 0, NULL,
|
||
&size, latency_range);
|
||
if (r != noErr) {
|
||
LOG("AudioObjectGetPropertyData/buffer size range rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
#endif /* !TARGET_OS_IPHONE */
|
||
|
||
static AudioObjectID
|
||
audiounit_get_default_device_id(cubeb_device_type type)
|
||
{
|
||
const AudioObjectPropertyAddress * adr;
|
||
if (type == CUBEB_DEVICE_TYPE_OUTPUT) {
|
||
adr = &DEFAULT_OUTPUT_DEVICE_PROPERTY_ADDRESS;
|
||
} else if (type == CUBEB_DEVICE_TYPE_INPUT) {
|
||
adr = &DEFAULT_INPUT_DEVICE_PROPERTY_ADDRESS;
|
||
} else {
|
||
return kAudioObjectUnknown;
|
||
}
|
||
|
||
AudioDeviceID devid;
|
||
UInt32 size = sizeof(AudioDeviceID);
|
||
if (AudioObjectGetPropertyData(kAudioObjectSystemObject, adr, 0, NULL, &size,
|
||
&devid) != noErr) {
|
||
return kAudioObjectUnknown;
|
||
}
|
||
|
||
return devid;
|
||
}
|
||
|
||
int
|
||
audiounit_get_max_channel_count(cubeb * ctx, uint32_t * max_channels)
|
||
{
|
||
#if TARGET_OS_IPHONE
|
||
// TODO: [[AVAudioSession sharedInstance] maximumOutputNumberOfChannels]
|
||
*max_channels = 2;
|
||
#else
|
||
UInt32 size;
|
||
OSStatus r;
|
||
AudioDeviceID output_device_id;
|
||
AudioStreamBasicDescription stream_format;
|
||
AudioObjectPropertyAddress stream_format_address = {
|
||
kAudioDevicePropertyStreamFormat, kAudioDevicePropertyScopeOutput,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
assert(ctx && max_channels);
|
||
|
||
output_device_id = audiounit_get_default_device_id(CUBEB_DEVICE_TYPE_OUTPUT);
|
||
if (output_device_id == kAudioObjectUnknown) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
size = sizeof(stream_format);
|
||
|
||
r = AudioObjectGetPropertyData(output_device_id, &stream_format_address, 0,
|
||
NULL, &size, &stream_format);
|
||
if (r != noErr) {
|
||
LOG("AudioObjectPropertyAddress/StreamFormat rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
*max_channels = stream_format.mChannelsPerFrame;
|
||
#endif
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_get_min_latency(cubeb * /* ctx */, cubeb_stream_params /* params */,
|
||
uint32_t * latency_frames)
|
||
{
|
||
#if TARGET_OS_IPHONE
|
||
// TODO: [[AVAudioSession sharedInstance] inputLatency]
|
||
return CUBEB_ERROR_NOT_SUPPORTED;
|
||
#else
|
||
AudioValueRange latency_range;
|
||
if (audiounit_get_acceptable_latency_range(&latency_range) != CUBEB_OK) {
|
||
LOG("Could not get acceptable latency range.");
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
*latency_frames =
|
||
max<uint32_t>(latency_range.mMinimum, SAFE_MIN_LATENCY_FRAMES);
|
||
#endif
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_get_preferred_sample_rate(cubeb * /* ctx */, uint32_t * rate)
|
||
{
|
||
#if TARGET_OS_IPHONE
|
||
// TODO
|
||
return CUBEB_ERROR_NOT_SUPPORTED;
|
||
#else
|
||
UInt32 size;
|
||
OSStatus r;
|
||
Float64 fsamplerate;
|
||
AudioDeviceID output_device_id;
|
||
AudioObjectPropertyAddress samplerate_address = {
|
||
kAudioDevicePropertyNominalSampleRate, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
output_device_id = audiounit_get_default_device_id(CUBEB_DEVICE_TYPE_OUTPUT);
|
||
if (output_device_id == kAudioObjectUnknown) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
size = sizeof(fsamplerate);
|
||
r = AudioObjectGetPropertyData(output_device_id, &samplerate_address, 0, NULL,
|
||
&size, &fsamplerate);
|
||
|
||
if (r != noErr) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
*rate = static_cast<uint32_t>(fsamplerate);
|
||
#endif
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static cubeb_channel_layout
|
||
audiounit_convert_channel_layout(AudioChannelLayout * layout)
|
||
{
|
||
// When having one or two channel, force mono or stereo. Some devices (namely,
|
||
// Bose QC35, mark 1 and 2), expose a single channel mapped to the right for
|
||
// some reason.
|
||
if (layout->mNumberChannelDescriptions == 1) {
|
||
return CUBEB_LAYOUT_MONO;
|
||
} else if (layout->mNumberChannelDescriptions == 2) {
|
||
return CUBEB_LAYOUT_STEREO;
|
||
}
|
||
|
||
if (layout->mChannelLayoutTag !=
|
||
kAudioChannelLayoutTag_UseChannelDescriptions) {
|
||
// kAudioChannelLayoutTag_UseChannelBitmap
|
||
// kAudioChannelLayoutTag_Mono
|
||
// kAudioChannelLayoutTag_Stereo
|
||
// ....
|
||
LOG("Only handle UseChannelDescriptions for now.\n");
|
||
return CUBEB_LAYOUT_UNDEFINED;
|
||
}
|
||
|
||
cubeb_channel_layout cl = 0;
|
||
for (UInt32 i = 0; i < layout->mNumberChannelDescriptions; ++i) {
|
||
cubeb_channel cc = channel_label_to_cubeb_channel(
|
||
layout->mChannelDescriptions[i].mChannelLabel);
|
||
if (cc == CHANNEL_UNKNOWN) {
|
||
return CUBEB_LAYOUT_UNDEFINED;
|
||
}
|
||
cl |= cc;
|
||
}
|
||
|
||
return cl;
|
||
}
|
||
|
||
static cubeb_channel_layout
|
||
audiounit_get_preferred_channel_layout(AudioUnit output_unit)
|
||
{
|
||
OSStatus rv = noErr;
|
||
UInt32 size = 0;
|
||
rv = AudioUnitGetPropertyInfo(
|
||
output_unit, kAudioDevicePropertyPreferredChannelLayout,
|
||
kAudioUnitScope_Output, AU_OUT_BUS, &size, nullptr);
|
||
if (rv != noErr) {
|
||
LOG("AudioUnitGetPropertyInfo/kAudioDevicePropertyPreferredChannelLayout "
|
||
"rv=%d",
|
||
rv);
|
||
return CUBEB_LAYOUT_UNDEFINED;
|
||
}
|
||
assert(size > 0);
|
||
|
||
auto layout = make_sized_audio_channel_layout(size);
|
||
rv = AudioUnitGetProperty(
|
||
output_unit, kAudioDevicePropertyPreferredChannelLayout,
|
||
kAudioUnitScope_Output, AU_OUT_BUS, layout.get(), &size);
|
||
if (rv != noErr) {
|
||
LOG("AudioUnitGetProperty/kAudioDevicePropertyPreferredChannelLayout rv=%d",
|
||
rv);
|
||
return CUBEB_LAYOUT_UNDEFINED;
|
||
}
|
||
|
||
return audiounit_convert_channel_layout(layout.get());
|
||
}
|
||
|
||
static cubeb_channel_layout
|
||
audiounit_get_current_channel_layout(AudioUnit output_unit)
|
||
{
|
||
OSStatus rv = noErr;
|
||
UInt32 size = 0;
|
||
rv = AudioUnitGetPropertyInfo(
|
||
output_unit, kAudioUnitProperty_AudioChannelLayout,
|
||
kAudioUnitScope_Output, AU_OUT_BUS, &size, nullptr);
|
||
if (rv != noErr) {
|
||
LOG("AudioUnitGetPropertyInfo/kAudioUnitProperty_AudioChannelLayout rv=%d",
|
||
rv);
|
||
// This property isn't known before macOS 10.12, attempt another method.
|
||
return audiounit_get_preferred_channel_layout(output_unit);
|
||
}
|
||
assert(size > 0);
|
||
|
||
auto layout = make_sized_audio_channel_layout(size);
|
||
rv = AudioUnitGetProperty(output_unit, kAudioUnitProperty_AudioChannelLayout,
|
||
kAudioUnitScope_Output, AU_OUT_BUS, layout.get(),
|
||
&size);
|
||
if (rv != noErr) {
|
||
LOG("AudioUnitGetProperty/kAudioUnitProperty_AudioChannelLayout rv=%d", rv);
|
||
return CUBEB_LAYOUT_UNDEFINED;
|
||
}
|
||
|
||
return audiounit_convert_channel_layout(layout.get());
|
||
}
|
||
|
||
static int
|
||
audiounit_create_unit(AudioUnit * unit, device_info * device);
|
||
|
||
static OSStatus
|
||
audiounit_remove_device_listener(cubeb * context, cubeb_device_type devtype);
|
||
|
||
static void
|
||
audiounit_destroy(cubeb * ctx)
|
||
{
|
||
{
|
||
auto_lock lock(ctx->mutex);
|
||
|
||
// Disabling this assert for bug 1083664 -- we seem to leak a stream
|
||
// assert(ctx->active_streams == 0);
|
||
if (audiounit_active_streams(ctx) > 0) {
|
||
LOG("(%p) API misuse, %d streams active when context destroyed!", ctx,
|
||
audiounit_active_streams(ctx));
|
||
}
|
||
|
||
// Destroying a cubeb context with device collection callbacks registered
|
||
// is misuse of the API, assert then attempt to clean up.
|
||
assert(!ctx->input_collection_changed_callback &&
|
||
!ctx->input_collection_changed_user_ptr &&
|
||
!ctx->output_collection_changed_callback &&
|
||
!ctx->output_collection_changed_user_ptr);
|
||
|
||
/* Unregister the callback if necessary. */
|
||
if (ctx->input_collection_changed_callback) {
|
||
audiounit_remove_device_listener(ctx, CUBEB_DEVICE_TYPE_INPUT);
|
||
}
|
||
if (ctx->output_collection_changed_callback) {
|
||
audiounit_remove_device_listener(ctx, CUBEB_DEVICE_TYPE_OUTPUT);
|
||
}
|
||
}
|
||
|
||
dispatch_release(ctx->serial_queue);
|
||
|
||
delete ctx;
|
||
}
|
||
|
||
static void
|
||
audiounit_stream_destroy(cubeb_stream * stm);
|
||
|
||
static int
|
||
audio_stream_desc_init(AudioStreamBasicDescription * ss,
|
||
const cubeb_stream_params * stream_params)
|
||
{
|
||
switch (stream_params->format) {
|
||
case CUBEB_SAMPLE_S16LE:
|
||
ss->mBitsPerChannel = 16;
|
||
ss->mFormatFlags = kAudioFormatFlagIsSignedInteger;
|
||
break;
|
||
case CUBEB_SAMPLE_S16BE:
|
||
ss->mBitsPerChannel = 16;
|
||
ss->mFormatFlags =
|
||
kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsBigEndian;
|
||
break;
|
||
case CUBEB_SAMPLE_FLOAT32LE:
|
||
ss->mBitsPerChannel = 32;
|
||
ss->mFormatFlags = kAudioFormatFlagIsFloat;
|
||
break;
|
||
case CUBEB_SAMPLE_FLOAT32BE:
|
||
ss->mBitsPerChannel = 32;
|
||
ss->mFormatFlags = kAudioFormatFlagIsFloat | kAudioFormatFlagIsBigEndian;
|
||
break;
|
||
default:
|
||
return CUBEB_ERROR_INVALID_FORMAT;
|
||
}
|
||
|
||
ss->mFormatID = kAudioFormatLinearPCM;
|
||
ss->mFormatFlags |= kLinearPCMFormatFlagIsPacked;
|
||
ss->mSampleRate = stream_params->rate;
|
||
ss->mChannelsPerFrame = stream_params->channels;
|
||
|
||
ss->mBytesPerFrame = (ss->mBitsPerChannel / 8) * ss->mChannelsPerFrame;
|
||
ss->mFramesPerPacket = 1;
|
||
ss->mBytesPerPacket = ss->mBytesPerFrame * ss->mFramesPerPacket;
|
||
|
||
ss->mReserved = 0;
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
void
|
||
audiounit_init_mixer(cubeb_stream * stm)
|
||
{
|
||
// We can't rely on macOS' AudioUnit to properly downmix (or upmix) the audio
|
||
// data, it silently drop the channels so we need to remix the
|
||
// audio data by ourselves to keep all the information.
|
||
stm->mixer.reset(cubeb_mixer_create(
|
||
stm->output_stream_params.format, stm->output_stream_params.channels,
|
||
stm->output_stream_params.layout, stm->context->channels,
|
||
stm->context->layout));
|
||
assert(stm->mixer);
|
||
}
|
||
|
||
static int
|
||
audiounit_set_channel_layout(AudioUnit unit, io_side side,
|
||
cubeb_channel_layout layout)
|
||
{
|
||
if (side != io_side::OUTPUT) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
if (layout == CUBEB_LAYOUT_UNDEFINED) {
|
||
// We leave everything as-is...
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
OSStatus r;
|
||
uint32_t nb_channels = cubeb_channel_layout_nb_channels(layout);
|
||
|
||
// We do not use CoreAudio standard layout for lack of documentation on what
|
||
// the actual channel orders are. So we set a custom layout.
|
||
size_t size = offsetof(AudioChannelLayout, mChannelDescriptions[nb_channels]);
|
||
auto au_layout = make_sized_audio_channel_layout(size);
|
||
au_layout->mChannelLayoutTag = kAudioChannelLayoutTag_UseChannelDescriptions;
|
||
au_layout->mNumberChannelDescriptions = nb_channels;
|
||
|
||
uint32_t channels = 0;
|
||
cubeb_channel_layout channelMap = layout;
|
||
for (uint32_t i = 0; channelMap != 0; ++i) {
|
||
XASSERT(channels < nb_channels);
|
||
uint32_t channel = (channelMap & 1) << i;
|
||
if (channel != 0) {
|
||
au_layout->mChannelDescriptions[channels].mChannelLabel =
|
||
cubeb_channel_to_channel_label(static_cast<cubeb_channel>(channel));
|
||
au_layout->mChannelDescriptions[channels].mChannelFlags =
|
||
kAudioChannelFlags_AllOff;
|
||
channels++;
|
||
}
|
||
channelMap = channelMap >> 1;
|
||
}
|
||
|
||
r = AudioUnitSetProperty(unit, kAudioUnitProperty_AudioChannelLayout,
|
||
kAudioUnitScope_Input, AU_OUT_BUS, au_layout.get(),
|
||
size);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitSetProperty/%s/kAudioUnitProperty_AudioChannelLayout rv=%d",
|
||
to_string(side), r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
void
|
||
audiounit_layout_init(cubeb_stream * stm, io_side side)
|
||
{
|
||
// We currently don't support the input layout setting.
|
||
if (side == io_side::INPUT) {
|
||
return;
|
||
}
|
||
|
||
stm->context->layout = audiounit_get_current_channel_layout(stm->output_unit);
|
||
|
||
audiounit_set_channel_layout(stm->output_unit, io_side::OUTPUT,
|
||
stm->context->layout);
|
||
}
|
||
|
||
static vector<AudioObjectID>
|
||
audiounit_get_sub_devices(AudioDeviceID device_id)
|
||
{
|
||
vector<AudioDeviceID> sub_devices;
|
||
AudioObjectPropertyAddress property_address = {
|
||
kAudioAggregateDevicePropertyActiveSubDeviceList,
|
||
kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster};
|
||
UInt32 size = 0;
|
||
OSStatus rv = AudioObjectGetPropertyDataSize(device_id, &property_address, 0,
|
||
nullptr, &size);
|
||
|
||
if (rv != noErr) {
|
||
sub_devices.push_back(device_id);
|
||
return sub_devices;
|
||
}
|
||
|
||
uint32_t count = static_cast<uint32_t>(size / sizeof(AudioObjectID));
|
||
sub_devices.resize(count);
|
||
rv = AudioObjectGetPropertyData(device_id, &property_address, 0, nullptr,
|
||
&size, sub_devices.data());
|
||
if (rv != noErr) {
|
||
sub_devices.clear();
|
||
sub_devices.push_back(device_id);
|
||
} else {
|
||
LOG("Found %u sub-devices", count);
|
||
}
|
||
return sub_devices;
|
||
}
|
||
|
||
static int
|
||
audiounit_create_blank_aggregate_device(AudioObjectID * plugin_id,
|
||
AudioDeviceID * aggregate_device_id)
|
||
{
|
||
AudioObjectPropertyAddress address_plugin_bundle_id = {
|
||
kAudioHardwarePropertyPlugInForBundleID, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
UInt32 size = 0;
|
||
OSStatus r = AudioObjectGetPropertyDataSize(
|
||
kAudioObjectSystemObject, &address_plugin_bundle_id, 0, NULL, &size);
|
||
if (r != noErr) {
|
||
LOG("AudioObjectGetPropertyDataSize/"
|
||
"kAudioHardwarePropertyPlugInForBundleID, rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
AudioValueTranslation translation_value;
|
||
CFStringRef in_bundle_ref = CFSTR("com.apple.audio.CoreAudio");
|
||
translation_value.mInputData = &in_bundle_ref;
|
||
translation_value.mInputDataSize = sizeof(in_bundle_ref);
|
||
translation_value.mOutputData = plugin_id;
|
||
translation_value.mOutputDataSize = sizeof(*plugin_id);
|
||
|
||
r = AudioObjectGetPropertyData(kAudioObjectSystemObject,
|
||
&address_plugin_bundle_id, 0, nullptr, &size,
|
||
&translation_value);
|
||
if (r != noErr) {
|
||
LOG("AudioObjectGetPropertyData/kAudioHardwarePropertyPlugInForBundleID, "
|
||
"rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
AudioObjectPropertyAddress create_aggregate_device_address = {
|
||
kAudioPlugInCreateAggregateDevice, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
r = AudioObjectGetPropertyDataSize(
|
||
*plugin_id, &create_aggregate_device_address, 0, nullptr, &size);
|
||
if (r != noErr) {
|
||
LOG("AudioObjectGetPropertyDataSize/kAudioPlugInCreateAggregateDevice, "
|
||
"rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
CFMutableDictionaryRef aggregate_device_dict = CFDictionaryCreateMutable(
|
||
kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks,
|
||
&kCFTypeDictionaryValueCallBacks);
|
||
struct timeval timestamp;
|
||
gettimeofday(×tamp, NULL);
|
||
long long int time_id = timestamp.tv_sec * 1000000LL + timestamp.tv_usec;
|
||
CFStringRef aggregate_device_name = CFStringCreateWithFormat(
|
||
NULL, NULL, CFSTR("%s_%llx"), PRIVATE_AGGREGATE_DEVICE_NAME, time_id);
|
||
CFDictionaryAddValue(aggregate_device_dict,
|
||
CFSTR(kAudioAggregateDeviceNameKey),
|
||
aggregate_device_name);
|
||
CFRelease(aggregate_device_name);
|
||
|
||
CFStringRef aggregate_device_UID =
|
||
CFStringCreateWithFormat(NULL, NULL, CFSTR("org.mozilla.%s_%llx"),
|
||
PRIVATE_AGGREGATE_DEVICE_NAME, time_id);
|
||
CFDictionaryAddValue(aggregate_device_dict,
|
||
CFSTR(kAudioAggregateDeviceUIDKey),
|
||
aggregate_device_UID);
|
||
CFRelease(aggregate_device_UID);
|
||
|
||
int private_value = 1;
|
||
CFNumberRef aggregate_device_private_key =
|
||
CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &private_value);
|
||
CFDictionaryAddValue(aggregate_device_dict,
|
||
CFSTR(kAudioAggregateDeviceIsPrivateKey),
|
||
aggregate_device_private_key);
|
||
CFRelease(aggregate_device_private_key);
|
||
|
||
int stacked_value = 0;
|
||
CFNumberRef aggregate_device_stacked_key =
|
||
CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &stacked_value);
|
||
CFDictionaryAddValue(aggregate_device_dict,
|
||
CFSTR(kAudioAggregateDeviceIsStackedKey),
|
||
aggregate_device_stacked_key);
|
||
CFRelease(aggregate_device_stacked_key);
|
||
|
||
r = AudioObjectGetPropertyData(*plugin_id, &create_aggregate_device_address,
|
||
sizeof(aggregate_device_dict),
|
||
&aggregate_device_dict, &size,
|
||
aggregate_device_id);
|
||
CFRelease(aggregate_device_dict);
|
||
if (r != noErr) {
|
||
LOG("AudioObjectGetPropertyData/kAudioPlugInCreateAggregateDevice, rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
LOG("New aggregate device %u", *aggregate_device_id);
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
// The returned CFStringRef object needs to be released (via CFRelease)
|
||
// if it's not NULL, since the reference count of the returned CFStringRef
|
||
// object is increased.
|
||
static CFStringRef
|
||
get_device_name(AudioDeviceID id)
|
||
{
|
||
UInt32 size = sizeof(CFStringRef);
|
||
CFStringRef UIname = nullptr;
|
||
AudioObjectPropertyAddress address_uuid = {kAudioDevicePropertyDeviceUID,
|
||
kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
OSStatus err =
|
||
AudioObjectGetPropertyData(id, &address_uuid, 0, nullptr, &size, &UIname);
|
||
return (err == noErr) ? UIname : NULL;
|
||
}
|
||
|
||
static int
|
||
audiounit_set_aggregate_sub_device_list(AudioDeviceID aggregate_device_id,
|
||
AudioDeviceID input_device_id,
|
||
AudioDeviceID output_device_id)
|
||
{
|
||
LOG("Add devices input %u and output %u into aggregate device %u",
|
||
input_device_id, output_device_id, aggregate_device_id);
|
||
const vector<AudioDeviceID> output_sub_devices =
|
||
audiounit_get_sub_devices(output_device_id);
|
||
const vector<AudioDeviceID> input_sub_devices =
|
||
audiounit_get_sub_devices(input_device_id);
|
||
|
||
CFMutableArrayRef aggregate_sub_devices_array =
|
||
CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
|
||
/* The order of the items in the array is significant and is used to determine
|
||
the order of the streams of the AudioAggregateDevice. */
|
||
for (UInt32 i = 0; i < output_sub_devices.size(); i++) {
|
||
CFStringRef ref = get_device_name(output_sub_devices[i]);
|
||
if (ref == NULL) {
|
||
CFRelease(aggregate_sub_devices_array);
|
||
return CUBEB_ERROR;
|
||
}
|
||
CFArrayAppendValue(aggregate_sub_devices_array, ref);
|
||
CFRelease(ref);
|
||
}
|
||
for (UInt32 i = 0; i < input_sub_devices.size(); i++) {
|
||
CFStringRef ref = get_device_name(input_sub_devices[i]);
|
||
if (ref == NULL) {
|
||
CFRelease(aggregate_sub_devices_array);
|
||
return CUBEB_ERROR;
|
||
}
|
||
CFArrayAppendValue(aggregate_sub_devices_array, ref);
|
||
CFRelease(ref);
|
||
}
|
||
|
||
AudioObjectPropertyAddress aggregate_sub_device_list = {
|
||
kAudioAggregateDevicePropertyFullSubDeviceList,
|
||
kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster};
|
||
UInt32 size = sizeof(CFMutableArrayRef);
|
||
OSStatus rv = AudioObjectSetPropertyData(
|
||
aggregate_device_id, &aggregate_sub_device_list, 0, nullptr, size,
|
||
&aggregate_sub_devices_array);
|
||
CFRelease(aggregate_sub_devices_array);
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectSetPropertyData/"
|
||
"kAudioAggregateDevicePropertyFullSubDeviceList, rv=%d",
|
||
rv);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_set_master_aggregate_device(const AudioDeviceID aggregate_device_id)
|
||
{
|
||
assert(aggregate_device_id != kAudioObjectUnknown);
|
||
AudioObjectPropertyAddress master_aggregate_sub_device = {
|
||
kAudioAggregateDevicePropertyMasterSubDevice,
|
||
kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster};
|
||
|
||
// Master become the 1st output sub device
|
||
AudioDeviceID output_device_id =
|
||
audiounit_get_default_device_id(CUBEB_DEVICE_TYPE_OUTPUT);
|
||
const vector<AudioDeviceID> output_sub_devices =
|
||
audiounit_get_sub_devices(output_device_id);
|
||
CFStringRef master_sub_device = get_device_name(output_sub_devices[0]);
|
||
|
||
UInt32 size = sizeof(CFStringRef);
|
||
OSStatus rv = AudioObjectSetPropertyData(aggregate_device_id,
|
||
&master_aggregate_sub_device, 0,
|
||
NULL, size, &master_sub_device);
|
||
if (master_sub_device) {
|
||
CFRelease(master_sub_device);
|
||
}
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectSetPropertyData/"
|
||
"kAudioAggregateDevicePropertyMasterSubDevice, rv=%d",
|
||
rv);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_activate_clock_drift_compensation(
|
||
const AudioDeviceID aggregate_device_id)
|
||
{
|
||
assert(aggregate_device_id != kAudioObjectUnknown);
|
||
AudioObjectPropertyAddress address_owned = {
|
||
kAudioObjectPropertyOwnedObjects, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
UInt32 qualifier_data_size = sizeof(AudioObjectID);
|
||
AudioClassID class_id = kAudioSubDeviceClassID;
|
||
void * qualifier_data = &class_id;
|
||
UInt32 size = 0;
|
||
OSStatus rv = AudioObjectGetPropertyDataSize(
|
||
aggregate_device_id, &address_owned, qualifier_data_size, qualifier_data,
|
||
&size);
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectGetPropertyDataSize/kAudioObjectPropertyOwnedObjects, "
|
||
"rv=%d",
|
||
rv);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
UInt32 subdevices_num = 0;
|
||
subdevices_num = size / sizeof(AudioObjectID);
|
||
AudioObjectID sub_devices[subdevices_num];
|
||
size = sizeof(sub_devices);
|
||
|
||
rv = AudioObjectGetPropertyData(aggregate_device_id, &address_owned,
|
||
qualifier_data_size, qualifier_data, &size,
|
||
sub_devices);
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectGetPropertyData/kAudioObjectPropertyOwnedObjects, rv=%d",
|
||
rv);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
AudioObjectPropertyAddress address_drift = {
|
||
kAudioSubDevicePropertyDriftCompensation, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
// Start from the second device since the first is the master clock
|
||
for (UInt32 i = 1; i < subdevices_num; ++i) {
|
||
UInt32 drift_compensation_value = 1;
|
||
rv = AudioObjectSetPropertyData(sub_devices[i], &address_drift, 0, nullptr,
|
||
sizeof(UInt32), &drift_compensation_value);
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectSetPropertyData/"
|
||
"kAudioSubDevicePropertyDriftCompensation, rv=%d",
|
||
rv);
|
||
return CUBEB_OK;
|
||
}
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_destroy_aggregate_device(AudioObjectID plugin_id,
|
||
AudioDeviceID * aggregate_device_id);
|
||
static void
|
||
audiounit_get_available_samplerate(AudioObjectID devid,
|
||
AudioObjectPropertyScope scope,
|
||
uint32_t * min, uint32_t * max,
|
||
uint32_t * def);
|
||
static int
|
||
audiounit_create_device_from_hwdev(cubeb_device_info * dev_info,
|
||
AudioObjectID devid, cubeb_device_type type);
|
||
static void
|
||
audiounit_device_destroy(cubeb_device_info * device);
|
||
|
||
static void
|
||
audiounit_workaround_for_airpod(cubeb_stream * stm)
|
||
{
|
||
cubeb_device_info input_device_info;
|
||
audiounit_create_device_from_hwdev(&input_device_info, stm->input_device.id,
|
||
CUBEB_DEVICE_TYPE_INPUT);
|
||
|
||
cubeb_device_info output_device_info;
|
||
audiounit_create_device_from_hwdev(&output_device_info, stm->output_device.id,
|
||
CUBEB_DEVICE_TYPE_OUTPUT);
|
||
|
||
std::string input_name_str(input_device_info.friendly_name);
|
||
std::string output_name_str(output_device_info.friendly_name);
|
||
|
||
if (input_name_str.find("AirPods") != std::string::npos &&
|
||
output_name_str.find("AirPods") != std::string::npos) {
|
||
uint32_t input_min_rate = 0;
|
||
uint32_t input_max_rate = 0;
|
||
uint32_t input_nominal_rate = 0;
|
||
audiounit_get_available_samplerate(
|
||
stm->input_device.id, kAudioObjectPropertyScopeGlobal, &input_min_rate,
|
||
&input_max_rate, &input_nominal_rate);
|
||
LOG("(%p) Input device %u, name: %s, min: %u, max: %u, nominal rate: %u",
|
||
stm, stm->input_device.id, input_device_info.friendly_name,
|
||
input_min_rate, input_max_rate, input_nominal_rate);
|
||
uint32_t output_min_rate = 0;
|
||
uint32_t output_max_rate = 0;
|
||
uint32_t output_nominal_rate = 0;
|
||
audiounit_get_available_samplerate(
|
||
stm->output_device.id, kAudioObjectPropertyScopeGlobal,
|
||
&output_min_rate, &output_max_rate, &output_nominal_rate);
|
||
LOG("(%p) Output device %u, name: %s, min: %u, max: %u, nominal rate: %u",
|
||
stm, stm->output_device.id, output_device_info.friendly_name,
|
||
output_min_rate, output_max_rate, output_nominal_rate);
|
||
|
||
Float64 rate = input_nominal_rate;
|
||
AudioObjectPropertyAddress addr = {kAudioDevicePropertyNominalSampleRate,
|
||
kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
OSStatus rv = AudioObjectSetPropertyData(stm->aggregate_device_id, &addr, 0,
|
||
nullptr, sizeof(Float64), &rate);
|
||
if (rv != noErr) {
|
||
LOG("Non fatal error, "
|
||
"AudioObjectSetPropertyData/kAudioDevicePropertyNominalSampleRate, "
|
||
"rv=%d",
|
||
rv);
|
||
}
|
||
}
|
||
audiounit_device_destroy(&input_device_info);
|
||
audiounit_device_destroy(&output_device_info);
|
||
}
|
||
|
||
/*
|
||
* Aggregate Device is a virtual audio interface which utilizes inputs and
|
||
* outputs of one or more physical audio interfaces. It is possible to use the
|
||
* clock of one of the devices as a master clock for all the combined devices
|
||
* and enable drift compensation for the devices that are not designated clock
|
||
* master.
|
||
*
|
||
* Creating a new aggregate device programmatically requires [0][1]:
|
||
* 1. Locate the base plug-in ("com.apple.audio.CoreAudio")
|
||
* 2. Create a dictionary that describes the aggregate device
|
||
* (don't add sub-devices in that step, prone to fail [0])
|
||
* 3. Ask the base plug-in to create the aggregate device (blank)
|
||
* 4. Add the array of sub-devices.
|
||
* 5. Set the master device (1st output device in our case)
|
||
* 6. Enable drift compensation for the non-master devices
|
||
*
|
||
* [0] https://lists.apple.com/archives/coreaudio-api/2006/Apr/msg00092.html
|
||
* [1] https://lists.apple.com/archives/coreaudio-api/2005/Jul/msg00150.html
|
||
* [2] CoreAudio.framework/Headers/AudioHardware.h
|
||
* */
|
||
static int
|
||
audiounit_create_aggregate_device(cubeb_stream * stm)
|
||
{
|
||
int r = audiounit_create_blank_aggregate_device(&stm->plugin_id,
|
||
&stm->aggregate_device_id);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Failed to create blank aggregate device", stm);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
r = audiounit_set_aggregate_sub_device_list(
|
||
stm->aggregate_device_id, stm->input_device.id, stm->output_device.id);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Failed to set aggregate sub-device list", stm);
|
||
audiounit_destroy_aggregate_device(stm->plugin_id,
|
||
&stm->aggregate_device_id);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
r = audiounit_set_master_aggregate_device(stm->aggregate_device_id);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Failed to set master sub-device for aggregate device", stm);
|
||
audiounit_destroy_aggregate_device(stm->plugin_id,
|
||
&stm->aggregate_device_id);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
r = audiounit_activate_clock_drift_compensation(stm->aggregate_device_id);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Failed to activate clock drift compensation for aggregate device",
|
||
stm);
|
||
audiounit_destroy_aggregate_device(stm->plugin_id,
|
||
&stm->aggregate_device_id);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
audiounit_workaround_for_airpod(stm);
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_destroy_aggregate_device(AudioObjectID plugin_id,
|
||
AudioDeviceID * aggregate_device_id)
|
||
{
|
||
assert(aggregate_device_id && *aggregate_device_id != kAudioDeviceUnknown &&
|
||
plugin_id != kAudioObjectUnknown);
|
||
AudioObjectPropertyAddress destroy_aggregate_device_addr = {
|
||
kAudioPlugInDestroyAggregateDevice, kAudioObjectPropertyScopeGlobal,
|
||
kAudioObjectPropertyElementMaster};
|
||
UInt32 size;
|
||
OSStatus rv = AudioObjectGetPropertyDataSize(
|
||
plugin_id, &destroy_aggregate_device_addr, 0, NULL, &size);
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectGetPropertyDataSize/kAudioPlugInDestroyAggregateDevice, "
|
||
"rv=%d",
|
||
rv);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
rv = AudioObjectGetPropertyData(plugin_id, &destroy_aggregate_device_addr, 0,
|
||
NULL, &size, aggregate_device_id);
|
||
if (rv != noErr) {
|
||
LOG("AudioObjectGetPropertyData/kAudioPlugInDestroyAggregateDevice, rv=%d",
|
||
rv);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
LOG("Destroyed aggregate device %d", *aggregate_device_id);
|
||
*aggregate_device_id = kAudioObjectUnknown;
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_new_unit_instance(AudioUnit * unit, device_info * device)
|
||
{
|
||
AudioComponentDescription desc;
|
||
AudioComponent comp;
|
||
OSStatus rv;
|
||
|
||
desc.componentType = kAudioUnitType_Output;
|
||
#if TARGET_OS_IPHONE
|
||
desc.componentSubType = kAudioUnitSubType_RemoteIO;
|
||
#else
|
||
// Use the DefaultOutputUnit for output when no device is specified
|
||
// so we retain automatic output device switching when the default
|
||
// changes. Once we have complete support for device notifications
|
||
// and switching, we can use the AUHAL for everything.
|
||
if ((device->flags & DEV_SYSTEM_DEFAULT) && (device->flags & DEV_OUTPUT)) {
|
||
desc.componentSubType = kAudioUnitSubType_DefaultOutput;
|
||
} else {
|
||
desc.componentSubType = kAudioUnitSubType_HALOutput;
|
||
}
|
||
#endif
|
||
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
|
||
desc.componentFlags = 0;
|
||
desc.componentFlagsMask = 0;
|
||
comp = AudioComponentFindNext(NULL, &desc);
|
||
if (comp == NULL) {
|
||
LOG("Could not find matching audio hardware.");
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
rv = AudioComponentInstanceNew(comp, unit);
|
||
if (rv != noErr) {
|
||
LOG("AudioComponentInstanceNew rv=%d", rv);
|
||
return CUBEB_ERROR;
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
enum enable_state {
|
||
DISABLE,
|
||
ENABLE,
|
||
};
|
||
|
||
static int
|
||
audiounit_enable_unit_scope(AudioUnit * unit, io_side side, enable_state state)
|
||
{
|
||
OSStatus rv;
|
||
UInt32 enable = state;
|
||
rv = AudioUnitSetProperty(*unit, kAudioOutputUnitProperty_EnableIO,
|
||
(side == io_side::INPUT) ? kAudioUnitScope_Input
|
||
: kAudioUnitScope_Output,
|
||
(side == io_side::INPUT) ? AU_IN_BUS : AU_OUT_BUS,
|
||
&enable, sizeof(UInt32));
|
||
if (rv != noErr) {
|
||
LOG("AudioUnitSetProperty/kAudioOutputUnitProperty_EnableIO rv=%d", rv);
|
||
return CUBEB_ERROR;
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_create_unit(AudioUnit * unit, device_info * device)
|
||
{
|
||
assert(*unit == nullptr);
|
||
assert(device);
|
||
|
||
OSStatus rv;
|
||
int r;
|
||
|
||
r = audiounit_new_unit_instance(unit, device);
|
||
if (r != CUBEB_OK) {
|
||
return r;
|
||
}
|
||
assert(*unit);
|
||
|
||
if ((device->flags & DEV_SYSTEM_DEFAULT) && (device->flags & DEV_OUTPUT)) {
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
if (device->flags & DEV_INPUT) {
|
||
r = audiounit_enable_unit_scope(unit, io_side::INPUT, ENABLE);
|
||
if (r != CUBEB_OK) {
|
||
LOG("Failed to enable audiounit input scope");
|
||
return r;
|
||
}
|
||
r = audiounit_enable_unit_scope(unit, io_side::OUTPUT, DISABLE);
|
||
if (r != CUBEB_OK) {
|
||
LOG("Failed to disable audiounit output scope");
|
||
return r;
|
||
}
|
||
} else if (device->flags & DEV_OUTPUT) {
|
||
r = audiounit_enable_unit_scope(unit, io_side::OUTPUT, ENABLE);
|
||
if (r != CUBEB_OK) {
|
||
LOG("Failed to enable audiounit output scope");
|
||
return r;
|
||
}
|
||
r = audiounit_enable_unit_scope(unit, io_side::INPUT, DISABLE);
|
||
if (r != CUBEB_OK) {
|
||
LOG("Failed to disable audiounit input scope");
|
||
return r;
|
||
}
|
||
} else {
|
||
assert(false);
|
||
}
|
||
|
||
rv = AudioUnitSetProperty(*unit, kAudioOutputUnitProperty_CurrentDevice,
|
||
kAudioUnitScope_Global, 0, &device->id,
|
||
sizeof(AudioDeviceID));
|
||
if (rv != noErr) {
|
||
LOG("AudioUnitSetProperty/kAudioOutputUnitProperty_CurrentDevice rv=%d",
|
||
rv);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_init_input_linear_buffer(cubeb_stream * stream, uint32_t capacity)
|
||
{
|
||
uint32_t size =
|
||
capacity * stream->latency_frames * stream->input_desc.mChannelsPerFrame;
|
||
if (stream->input_desc.mFormatFlags & kAudioFormatFlagIsSignedInteger) {
|
||
stream->input_linear_buffer.reset(new auto_array_wrapper_impl<short>(size));
|
||
} else {
|
||
stream->input_linear_buffer.reset(new auto_array_wrapper_impl<float>(size));
|
||
}
|
||
assert(stream->input_linear_buffer->length() == 0);
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static uint32_t
|
||
audiounit_clamp_latency(cubeb_stream * stm, uint32_t latency_frames)
|
||
{
|
||
// For the 1st stream set anything within safe min-max
|
||
assert(audiounit_active_streams(stm->context) > 0);
|
||
if (audiounit_active_streams(stm->context) == 1) {
|
||
return max(min<uint32_t>(latency_frames, SAFE_MAX_LATENCY_FRAMES),
|
||
SAFE_MIN_LATENCY_FRAMES);
|
||
}
|
||
assert(stm->output_unit);
|
||
|
||
// If more than one stream operates in parallel
|
||
// allow only lower values of latency
|
||
int r;
|
||
UInt32 output_buffer_size = 0;
|
||
UInt32 size = sizeof(output_buffer_size);
|
||
if (stm->output_unit) {
|
||
r = AudioUnitGetProperty(
|
||
stm->output_unit, kAudioDevicePropertyBufferFrameSize,
|
||
kAudioUnitScope_Output, AU_OUT_BUS, &output_buffer_size, &size);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitGetProperty/output/kAudioDevicePropertyBufferFrameSize "
|
||
"rv=%d",
|
||
r);
|
||
return 0;
|
||
}
|
||
|
||
output_buffer_size =
|
||
max(min<uint32_t>(output_buffer_size, SAFE_MAX_LATENCY_FRAMES),
|
||
SAFE_MIN_LATENCY_FRAMES);
|
||
}
|
||
|
||
UInt32 input_buffer_size = 0;
|
||
if (stm->input_unit) {
|
||
r = AudioUnitGetProperty(
|
||
stm->input_unit, kAudioDevicePropertyBufferFrameSize,
|
||
kAudioUnitScope_Input, AU_IN_BUS, &input_buffer_size, &size);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitGetProperty/input/kAudioDevicePropertyBufferFrameSize "
|
||
"rv=%d",
|
||
r);
|
||
return 0;
|
||
}
|
||
|
||
input_buffer_size =
|
||
max(min<uint32_t>(input_buffer_size, SAFE_MAX_LATENCY_FRAMES),
|
||
SAFE_MIN_LATENCY_FRAMES);
|
||
}
|
||
|
||
// Every following active streams can only set smaller latency
|
||
UInt32 upper_latency_limit = 0;
|
||
if (input_buffer_size != 0 && output_buffer_size != 0) {
|
||
upper_latency_limit = min<uint32_t>(input_buffer_size, output_buffer_size);
|
||
} else if (input_buffer_size != 0) {
|
||
upper_latency_limit = input_buffer_size;
|
||
} else if (output_buffer_size != 0) {
|
||
upper_latency_limit = output_buffer_size;
|
||
} else {
|
||
upper_latency_limit = SAFE_MAX_LATENCY_FRAMES;
|
||
}
|
||
|
||
return max(min<uint32_t>(latency_frames, upper_latency_limit),
|
||
SAFE_MIN_LATENCY_FRAMES);
|
||
}
|
||
|
||
/*
|
||
* Change buffer size is prone to deadlock thus we change it
|
||
* following the steps:
|
||
* - register a listener for the buffer size property
|
||
* - change the property
|
||
* - wait until the listener is executed
|
||
* - property has changed, remove the listener
|
||
* */
|
||
static void
|
||
buffer_size_changed_callback(void * inClientData, AudioUnit inUnit,
|
||
AudioUnitPropertyID inPropertyID,
|
||
AudioUnitScope inScope, AudioUnitElement inElement)
|
||
{
|
||
cubeb_stream * stm = (cubeb_stream *)inClientData;
|
||
|
||
AudioUnit au = inUnit;
|
||
AudioUnitScope au_scope = kAudioUnitScope_Input;
|
||
AudioUnitElement au_element = inElement;
|
||
char const * au_type = "output";
|
||
|
||
if (AU_IN_BUS == inElement) {
|
||
au_scope = kAudioUnitScope_Output;
|
||
au_type = "input";
|
||
}
|
||
|
||
switch (inPropertyID) {
|
||
|
||
case kAudioDevicePropertyBufferFrameSize: {
|
||
if (inScope != au_scope) {
|
||
break;
|
||
}
|
||
UInt32 new_buffer_size;
|
||
UInt32 outSize = sizeof(UInt32);
|
||
OSStatus r =
|
||
AudioUnitGetProperty(au, kAudioDevicePropertyBufferFrameSize, au_scope,
|
||
au_element, &new_buffer_size, &outSize);
|
||
if (r != noErr) {
|
||
LOG("(%p) Event: kAudioDevicePropertyBufferFrameSize: Cannot get current "
|
||
"buffer size",
|
||
stm);
|
||
} else {
|
||
LOG("(%p) Event: kAudioDevicePropertyBufferFrameSize: New %s buffer size "
|
||
"= %d for scope %d",
|
||
stm, au_type, new_buffer_size, inScope);
|
||
}
|
||
stm->buffer_size_change_state = true;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
static int
|
||
audiounit_set_buffer_size(cubeb_stream * stm, uint32_t new_size_frames,
|
||
io_side side)
|
||
{
|
||
AudioUnit au = stm->output_unit;
|
||
AudioUnitScope au_scope = kAudioUnitScope_Input;
|
||
AudioUnitElement au_element = AU_OUT_BUS;
|
||
|
||
if (side == io_side::INPUT) {
|
||
au = stm->input_unit;
|
||
au_scope = kAudioUnitScope_Output;
|
||
au_element = AU_IN_BUS;
|
||
}
|
||
|
||
uint32_t buffer_frames = 0;
|
||
UInt32 size = sizeof(buffer_frames);
|
||
int r = AudioUnitGetProperty(au, kAudioDevicePropertyBufferFrameSize,
|
||
au_scope, au_element, &buffer_frames, &size);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitGetProperty/%s/kAudioDevicePropertyBufferFrameSize rv=%d",
|
||
to_string(side), r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
if (new_size_frames == buffer_frames) {
|
||
LOG("(%p) No need to update %s buffer size already %u frames", stm,
|
||
to_string(side), buffer_frames);
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
r = AudioUnitAddPropertyListener(au, kAudioDevicePropertyBufferFrameSize,
|
||
buffer_size_changed_callback, stm);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitAddPropertyListener/%s/kAudioDevicePropertyBufferFrameSize "
|
||
"rv=%d",
|
||
to_string(side), r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
stm->buffer_size_change_state = false;
|
||
|
||
r = AudioUnitSetProperty(au, kAudioDevicePropertyBufferFrameSize, au_scope,
|
||
au_element, &new_size_frames,
|
||
sizeof(new_size_frames));
|
||
if (r != noErr) {
|
||
LOG("AudioUnitSetProperty/%s/kAudioDevicePropertyBufferFrameSize rv=%d",
|
||
to_string(side), r);
|
||
|
||
r = AudioUnitRemovePropertyListenerWithUserData(
|
||
au, kAudioDevicePropertyBufferFrameSize, buffer_size_changed_callback,
|
||
stm);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitAddPropertyListener/%s/kAudioDevicePropertyBufferFrameSize "
|
||
"rv=%d",
|
||
to_string(side), r);
|
||
}
|
||
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
int count = 0;
|
||
while (!stm->buffer_size_change_state && count++ < 30) {
|
||
struct timespec req, rem;
|
||
req.tv_sec = 0;
|
||
req.tv_nsec = 100000000L; // 0.1 sec
|
||
if (nanosleep(&req, &rem) < 0) {
|
||
LOG("(%p) Warning: nanosleep call failed or interrupted. Remaining time "
|
||
"%ld nano secs \n",
|
||
stm, rem.tv_nsec);
|
||
}
|
||
LOG("(%p) audiounit_set_buffer_size : wait count = %d", stm, count);
|
||
}
|
||
|
||
r = AudioUnitRemovePropertyListenerWithUserData(
|
||
au, kAudioDevicePropertyBufferFrameSize, buffer_size_changed_callback,
|
||
stm);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitAddPropertyListener/%s/kAudioDevicePropertyBufferFrameSize "
|
||
"rv=%d",
|
||
to_string(side), r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
if (!stm->buffer_size_change_state && count >= 30) {
|
||
LOG("(%p) Error, did not get buffer size change callback ...", stm);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
LOG("(%p) %s buffer size changed to %u frames.", stm, to_string(side),
|
||
new_size_frames);
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_configure_input(cubeb_stream * stm)
|
||
{
|
||
assert(stm && stm->input_unit);
|
||
|
||
int r = 0;
|
||
UInt32 size;
|
||
AURenderCallbackStruct aurcbs_in;
|
||
|
||
LOG("(%p) Opening input side: rate %u, channels %u, format %d, latency in "
|
||
"frames %u.",
|
||
stm, stm->input_stream_params.rate, stm->input_stream_params.channels,
|
||
stm->input_stream_params.format, stm->latency_frames);
|
||
|
||
/* Get input device sample rate. */
|
||
AudioStreamBasicDescription input_hw_desc;
|
||
size = sizeof(AudioStreamBasicDescription);
|
||
r = AudioUnitGetProperty(stm->input_unit, kAudioUnitProperty_StreamFormat,
|
||
kAudioUnitScope_Input, AU_IN_BUS, &input_hw_desc,
|
||
&size);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitGetProperty/input/kAudioUnitProperty_StreamFormat rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
stm->input_hw_rate = input_hw_desc.mSampleRate;
|
||
LOG("(%p) Input device sampling rate: %.2f", stm, stm->input_hw_rate);
|
||
|
||
/* Set format description according to the input params. */
|
||
r = audio_stream_desc_init(&stm->input_desc, &stm->input_stream_params);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Setting format description for input failed.", stm);
|
||
return r;
|
||
}
|
||
|
||
// Use latency to set buffer size
|
||
r = audiounit_set_buffer_size(stm, stm->latency_frames, io_side::INPUT);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Error in change input buffer size.", stm);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
AudioStreamBasicDescription src_desc = stm->input_desc;
|
||
/* Input AudioUnit must be configured with device's sample rate.
|
||
we will resample inside input callback. */
|
||
src_desc.mSampleRate = stm->input_hw_rate;
|
||
|
||
r = AudioUnitSetProperty(stm->input_unit, kAudioUnitProperty_StreamFormat,
|
||
kAudioUnitScope_Output, AU_IN_BUS, &src_desc,
|
||
sizeof(AudioStreamBasicDescription));
|
||
if (r != noErr) {
|
||
LOG("AudioUnitSetProperty/input/kAudioUnitProperty_StreamFormat rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
/* Frames per buffer in the input callback. */
|
||
r = AudioUnitSetProperty(
|
||
stm->input_unit, kAudioUnitProperty_MaximumFramesPerSlice,
|
||
kAudioUnitScope_Global, AU_IN_BUS, &stm->latency_frames, sizeof(UInt32));
|
||
if (r != noErr) {
|
||
LOG("AudioUnitSetProperty/input/kAudioUnitProperty_MaximumFramesPerSlice "
|
||
"rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
// Input only capacity
|
||
unsigned int array_capacity = 1;
|
||
if (has_output(stm)) {
|
||
// Full-duplex increase capacity
|
||
array_capacity = 8;
|
||
}
|
||
if (audiounit_init_input_linear_buffer(stm, array_capacity) != CUBEB_OK) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
aurcbs_in.inputProc = audiounit_input_callback;
|
||
aurcbs_in.inputProcRefCon = stm;
|
||
|
||
r = AudioUnitSetProperty(
|
||
stm->input_unit, kAudioOutputUnitProperty_SetInputCallback,
|
||
kAudioUnitScope_Global, AU_OUT_BUS, &aurcbs_in, sizeof(aurcbs_in));
|
||
if (r != noErr) {
|
||
LOG("AudioUnitSetProperty/input/kAudioOutputUnitProperty_SetInputCallback "
|
||
"rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
stm->frames_read = 0;
|
||
|
||
LOG("(%p) Input audiounit init successfully.", stm);
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_configure_output(cubeb_stream * stm)
|
||
{
|
||
assert(stm && stm->output_unit);
|
||
|
||
int r;
|
||
AURenderCallbackStruct aurcbs_out;
|
||
UInt32 size;
|
||
|
||
LOG("(%p) Opening output side: rate %u, channels %u, format %d, latency in "
|
||
"frames %u.",
|
||
stm, stm->output_stream_params.rate, stm->output_stream_params.channels,
|
||
stm->output_stream_params.format, stm->latency_frames);
|
||
|
||
r = audio_stream_desc_init(&stm->output_desc, &stm->output_stream_params);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Could not initialize the audio stream description.", stm);
|
||
return r;
|
||
}
|
||
|
||
/* Get output device sample rate. */
|
||
AudioStreamBasicDescription output_hw_desc;
|
||
size = sizeof(AudioStreamBasicDescription);
|
||
memset(&output_hw_desc, 0, size);
|
||
r = AudioUnitGetProperty(stm->output_unit, kAudioUnitProperty_StreamFormat,
|
||
kAudioUnitScope_Output, AU_OUT_BUS, &output_hw_desc,
|
||
&size);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitGetProperty/output/kAudioUnitProperty_StreamFormat rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
stm->output_hw_rate = output_hw_desc.mSampleRate;
|
||
if (!is_common_sample_rate(stm->output_desc.mSampleRate)) {
|
||
/* For uncommon sample rates, we may run into issues with the OS
|
||
resampler if we don't do the resampling ourselves, so set the
|
||
AudioUnit sample rate to the hardware rate and resample. */
|
||
stm->output_desc.mSampleRate = stm->output_hw_rate;
|
||
}
|
||
LOG("(%p) Output device sampling rate: %.2f", stm,
|
||
output_hw_desc.mSampleRate);
|
||
stm->context->channels = output_hw_desc.mChannelsPerFrame;
|
||
|
||
// Set the input layout to match the output device layout.
|
||
audiounit_layout_init(stm, io_side::OUTPUT);
|
||
if (stm->context->channels != stm->output_stream_params.channels ||
|
||
stm->context->layout != stm->output_stream_params.layout) {
|
||
LOG("Incompatible channel layouts detected, setting up remixer");
|
||
audiounit_init_mixer(stm);
|
||
// We will be remixing the data before it reaches the output device.
|
||
// We need to adjust the number of channels and other
|
||
// AudioStreamDescription details.
|
||
stm->output_desc.mChannelsPerFrame = stm->context->channels;
|
||
stm->output_desc.mBytesPerFrame = (stm->output_desc.mBitsPerChannel / 8) *
|
||
stm->output_desc.mChannelsPerFrame;
|
||
stm->output_desc.mBytesPerPacket =
|
||
stm->output_desc.mBytesPerFrame * stm->output_desc.mFramesPerPacket;
|
||
} else {
|
||
stm->mixer = nullptr;
|
||
}
|
||
|
||
r = AudioUnitSetProperty(stm->output_unit, kAudioUnitProperty_StreamFormat,
|
||
kAudioUnitScope_Input, AU_OUT_BUS, &stm->output_desc,
|
||
sizeof(AudioStreamBasicDescription));
|
||
if (r != noErr) {
|
||
LOG("AudioUnitSetProperty/output/kAudioUnitProperty_StreamFormat rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
r = audiounit_set_buffer_size(stm, stm->latency_frames, io_side::OUTPUT);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Error in change output buffer size.", stm);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
/* Frames per buffer in the input callback. */
|
||
r = AudioUnitSetProperty(
|
||
stm->output_unit, kAudioUnitProperty_MaximumFramesPerSlice,
|
||
kAudioUnitScope_Global, AU_OUT_BUS, &stm->latency_frames, sizeof(UInt32));
|
||
if (r != noErr) {
|
||
LOG("AudioUnitSetProperty/output/kAudioUnitProperty_MaximumFramesPerSlice "
|
||
"rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
aurcbs_out.inputProc = audiounit_output_callback;
|
||
aurcbs_out.inputProcRefCon = stm;
|
||
r = AudioUnitSetProperty(
|
||
stm->output_unit, kAudioUnitProperty_SetRenderCallback,
|
||
kAudioUnitScope_Global, AU_OUT_BUS, &aurcbs_out, sizeof(aurcbs_out));
|
||
if (r != noErr) {
|
||
LOG("AudioUnitSetProperty/output/kAudioUnitProperty_SetRenderCallback "
|
||
"rv=%d",
|
||
r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
stm->frames_written = 0;
|
||
|
||
LOG("(%p) Output audiounit init successfully.", stm);
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_setup_stream(cubeb_stream * stm)
|
||
{
|
||
stm->mutex.assert_current_thread_owns();
|
||
|
||
if ((stm->input_stream_params.prefs & CUBEB_STREAM_PREF_LOOPBACK) ||
|
||
(stm->output_stream_params.prefs & CUBEB_STREAM_PREF_LOOPBACK)) {
|
||
LOG("(%p) Loopback not supported for audiounit.", stm);
|
||
return CUBEB_ERROR_NOT_SUPPORTED;
|
||
}
|
||
|
||
int r = 0;
|
||
|
||
device_info in_dev_info = stm->input_device;
|
||
device_info out_dev_info = stm->output_device;
|
||
|
||
if (has_input(stm) && has_output(stm) &&
|
||
stm->input_device.id != stm->output_device.id) {
|
||
r = audiounit_create_aggregate_device(stm);
|
||
if (r != CUBEB_OK) {
|
||
stm->aggregate_device_id = kAudioObjectUnknown;
|
||
LOG("(%p) Create aggregate devices failed.", stm);
|
||
// !!!NOTE: It is not necessary to return here. If it does not
|
||
// return it will fallback to the old implementation. The intention
|
||
// is to investigate how often it fails. I plan to remove
|
||
// it after a couple of weeks.
|
||
return r;
|
||
} else {
|
||
in_dev_info.id = out_dev_info.id = stm->aggregate_device_id;
|
||
in_dev_info.flags = DEV_INPUT;
|
||
out_dev_info.flags = DEV_OUTPUT;
|
||
}
|
||
}
|
||
|
||
if (has_input(stm)) {
|
||
r = audiounit_create_unit(&stm->input_unit, &in_dev_info);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) AudioUnit creation for input failed.", stm);
|
||
return r;
|
||
}
|
||
}
|
||
|
||
if (has_output(stm)) {
|
||
r = audiounit_create_unit(&stm->output_unit, &out_dev_info);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) AudioUnit creation for output failed.", stm);
|
||
return r;
|
||
}
|
||
}
|
||
|
||
/* Latency cannot change if another stream is operating in parallel. In this
|
||
* case latency is set to the other stream value. */
|
||
if (audiounit_active_streams(stm->context) > 1) {
|
||
LOG("(%p) More than one active stream, use global latency.", stm);
|
||
stm->latency_frames = stm->context->global_latency_frames;
|
||
} else {
|
||
/* Silently clamp the latency down to the platform default, because we
|
||
* synthetize the clock from the callbacks, and we want the clock to update
|
||
* often. */
|
||
stm->latency_frames = audiounit_clamp_latency(stm, stm->latency_frames);
|
||
assert(stm->latency_frames); // Ugly error check
|
||
audiounit_set_global_latency(stm->context, stm->latency_frames);
|
||
}
|
||
|
||
/* Configure I/O stream */
|
||
if (has_input(stm)) {
|
||
r = audiounit_configure_input(stm);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Configure audiounit input failed.", stm);
|
||
return r;
|
||
}
|
||
}
|
||
|
||
if (has_output(stm)) {
|
||
r = audiounit_configure_output(stm);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Configure audiounit output failed.", stm);
|
||
return r;
|
||
}
|
||
}
|
||
|
||
// Setting the latency doesn't work well for USB headsets (eg. plantronics).
|
||
// Keep the default latency for now.
|
||
#if 0
|
||
buffer_size = latency;
|
||
|
||
/* Get the range of latency this particular device can work with, and clamp
|
||
* the requested latency to this acceptable range. */
|
||
#if !TARGET_OS_IPHONE
|
||
if (audiounit_get_acceptable_latency_range(&latency_range) != CUBEB_OK) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
if (buffer_size < (unsigned int) latency_range.mMinimum) {
|
||
buffer_size = (unsigned int) latency_range.mMinimum;
|
||
} else if (buffer_size > (unsigned int) latency_range.mMaximum) {
|
||
buffer_size = (unsigned int) latency_range.mMaximum;
|
||
}
|
||
|
||
/**
|
||
* Get the default buffer size. If our latency request is below the default,
|
||
* set it. Otherwise, use the default latency.
|
||
**/
|
||
size = sizeof(default_buffer_size);
|
||
if (AudioUnitGetProperty(stm->output_unit, kAudioDevicePropertyBufferFrameSize,
|
||
kAudioUnitScope_Output, 0, &default_buffer_size, &size) != 0) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
if (buffer_size < default_buffer_size) {
|
||
/* Set the maximum number of frame that the render callback will ask for,
|
||
* effectively setting the latency of the stream. This is process-wide. */
|
||
if (AudioUnitSetProperty(stm->output_unit, kAudioDevicePropertyBufferFrameSize,
|
||
kAudioUnitScope_Output, 0, &buffer_size, sizeof(buffer_size)) != 0) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
}
|
||
#else // TARGET_OS_IPHONE
|
||
//TODO: [[AVAudioSession sharedInstance] inputLatency]
|
||
// http://stackoverflow.com/questions/13157523/kaudiodevicepropertybufferframesize-replacement-for-ios
|
||
#endif
|
||
#endif
|
||
|
||
/* We use a resampler because input AudioUnit operates
|
||
* reliable only in the capture device sample rate.
|
||
* Resampler will convert it to the user sample rate
|
||
* and deliver it to the callback. */
|
||
uint32_t target_sample_rate;
|
||
if (has_input(stm)) {
|
||
target_sample_rate = stm->input_stream_params.rate;
|
||
} else {
|
||
assert(has_output(stm));
|
||
target_sample_rate = stm->output_stream_params.rate;
|
||
}
|
||
|
||
cubeb_stream_params input_unconverted_params;
|
||
if (has_input(stm)) {
|
||
input_unconverted_params = stm->input_stream_params;
|
||
/* Use the rate of the input device. */
|
||
input_unconverted_params.rate = stm->input_hw_rate;
|
||
}
|
||
|
||
cubeb_stream_params output_unconverted_params;
|
||
if (has_output(stm)) {
|
||
output_unconverted_params = stm->output_stream_params;
|
||
output_unconverted_params.rate = stm->output_desc.mSampleRate;
|
||
}
|
||
|
||
/* Create resampler. */
|
||
stm->resampler.reset(cubeb_resampler_create(
|
||
stm, has_input(stm) ? &input_unconverted_params : NULL,
|
||
has_output(stm) ? &output_unconverted_params : NULL, target_sample_rate,
|
||
stm->data_callback, stm->user_ptr, CUBEB_RESAMPLER_QUALITY_DESKTOP,
|
||
CUBEB_RESAMPLER_RECLOCK_NONE));
|
||
if (!stm->resampler) {
|
||
LOG("(%p) Could not create resampler.", stm);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
if (stm->input_unit != NULL) {
|
||
r = AudioUnitInitialize(stm->input_unit);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitInitialize/input rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
}
|
||
|
||
if (stm->output_unit != NULL) {
|
||
r = AudioUnitInitialize(stm->output_unit);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitInitialize/output rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
stm->current_latency_frames = audiounit_get_device_presentation_latency(
|
||
stm->output_device.id, kAudioDevicePropertyScopeOutput);
|
||
|
||
Float64 unit_s;
|
||
UInt32 size = sizeof(unit_s);
|
||
if (AudioUnitGetProperty(stm->output_unit, kAudioUnitProperty_Latency,
|
||
kAudioUnitScope_Global, 0, &unit_s,
|
||
&size) == noErr) {
|
||
stm->current_latency_frames +=
|
||
static_cast<uint32_t>(unit_s * stm->output_desc.mSampleRate);
|
||
}
|
||
}
|
||
|
||
if (stm->input_unit && stm->output_unit) {
|
||
// According to the I/O hardware rate it is expected a specific pattern of
|
||
// callbacks for example is input is 44100 and output is 48000 we expected
|
||
// no more than 2 out callback in a row.
|
||
stm->expected_output_callbacks_in_a_row =
|
||
ceilf(stm->output_hw_rate / stm->input_hw_rate);
|
||
}
|
||
|
||
r = audiounit_install_device_changed_callback(stm);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Could not install all device change callback.", stm);
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
cubeb_stream::cubeb_stream(cubeb * context)
|
||
: context(context), resampler(nullptr, cubeb_resampler_destroy),
|
||
mixer(nullptr, cubeb_mixer_destroy)
|
||
{
|
||
PodZero(&input_desc, 1);
|
||
PodZero(&output_desc, 1);
|
||
}
|
||
|
||
static void
|
||
audiounit_stream_destroy_internal(cubeb_stream * stm);
|
||
|
||
static int
|
||
audiounit_stream_init(cubeb * context, cubeb_stream ** stream,
|
||
char const * /* stream_name */, cubeb_devid input_device,
|
||
cubeb_stream_params * input_stream_params,
|
||
cubeb_devid output_device,
|
||
cubeb_stream_params * output_stream_params,
|
||
unsigned int latency_frames,
|
||
cubeb_data_callback data_callback,
|
||
cubeb_state_callback state_callback, void * user_ptr)
|
||
{
|
||
assert(context);
|
||
auto_lock context_lock(context->mutex);
|
||
audiounit_increment_active_streams(context);
|
||
unique_ptr<cubeb_stream, decltype(&audiounit_stream_destroy)> stm(
|
||
new cubeb_stream(context), audiounit_stream_destroy_internal);
|
||
int r;
|
||
*stream = NULL;
|
||
assert(latency_frames > 0);
|
||
|
||
/* These could be different in the future if we have both
|
||
* full-duplex stream and different devices for input vs output. */
|
||
stm->data_callback = data_callback;
|
||
stm->state_callback = state_callback;
|
||
stm->user_ptr = user_ptr;
|
||
stm->latency_frames = latency_frames;
|
||
|
||
if ((input_device && !input_stream_params) ||
|
||
(output_device && !output_stream_params)) {
|
||
return CUBEB_ERROR_INVALID_PARAMETER;
|
||
}
|
||
if (input_stream_params) {
|
||
stm->input_stream_params = *input_stream_params;
|
||
r = audiounit_set_device_info(
|
||
stm.get(), reinterpret_cast<uintptr_t>(input_device), io_side::INPUT);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Fail to set device info for input.", stm.get());
|
||
return r;
|
||
}
|
||
}
|
||
if (output_stream_params) {
|
||
stm->output_stream_params = *output_stream_params;
|
||
r = audiounit_set_device_info(
|
||
stm.get(), reinterpret_cast<uintptr_t>(output_device), io_side::OUTPUT);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Fail to set device info for output.", stm.get());
|
||
return r;
|
||
}
|
||
}
|
||
|
||
{
|
||
// It's not critical to lock here, because no other thread has been started
|
||
// yet, but it allows to assert that the lock has been taken in
|
||
// `audiounit_setup_stream`.
|
||
auto_lock lock(stm->mutex);
|
||
r = audiounit_setup_stream(stm.get());
|
||
}
|
||
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Could not setup the audiounit stream.", stm.get());
|
||
return r;
|
||
}
|
||
|
||
r = audiounit_install_system_changed_callback(stm.get());
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Could not install the device change callback.", stm.get());
|
||
return r;
|
||
}
|
||
|
||
*stream = stm.release();
|
||
LOG("(%p) Cubeb stream init successful.", *stream);
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static void
|
||
audiounit_close_stream(cubeb_stream * stm)
|
||
{
|
||
stm->mutex.assert_current_thread_owns();
|
||
|
||
if (stm->input_unit) {
|
||
AudioUnitUninitialize(stm->input_unit);
|
||
AudioComponentInstanceDispose(stm->input_unit);
|
||
stm->input_unit = nullptr;
|
||
}
|
||
|
||
stm->input_linear_buffer.reset();
|
||
|
||
if (stm->output_unit) {
|
||
AudioUnitUninitialize(stm->output_unit);
|
||
AudioComponentInstanceDispose(stm->output_unit);
|
||
stm->output_unit = nullptr;
|
||
}
|
||
|
||
stm->resampler.reset();
|
||
stm->mixer.reset();
|
||
|
||
if (stm->aggregate_device_id != kAudioObjectUnknown) {
|
||
audiounit_destroy_aggregate_device(stm->plugin_id,
|
||
&stm->aggregate_device_id);
|
||
stm->aggregate_device_id = kAudioObjectUnknown;
|
||
}
|
||
}
|
||
|
||
static void
|
||
audiounit_stream_destroy_internal(cubeb_stream * stm)
|
||
{
|
||
stm->context->mutex.assert_current_thread_owns();
|
||
|
||
int r = audiounit_uninstall_system_changed_callback(stm);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Could not uninstall the device changed callback", stm);
|
||
}
|
||
r = audiounit_uninstall_device_changed_callback(stm);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Could not uninstall all device change listeners", stm);
|
||
}
|
||
|
||
auto_lock lock(stm->mutex);
|
||
audiounit_close_stream(stm);
|
||
assert(audiounit_active_streams(stm->context) >= 1);
|
||
audiounit_decrement_active_streams(stm->context);
|
||
}
|
||
|
||
static void
|
||
audiounit_stream_destroy(cubeb_stream * stm)
|
||
{
|
||
int r = audiounit_uninstall_system_changed_callback(stm);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Could not uninstall the device changed callback", stm);
|
||
}
|
||
r = audiounit_uninstall_device_changed_callback(stm);
|
||
if (r != CUBEB_OK) {
|
||
LOG("(%p) Could not uninstall all device change listeners", stm);
|
||
}
|
||
|
||
if (!stm->shutdown.load()) {
|
||
auto_lock context_lock(stm->context->mutex);
|
||
audiounit_stream_stop_internal(stm);
|
||
stm->shutdown = true;
|
||
}
|
||
|
||
stm->destroy_pending = true;
|
||
// Execute close in serial queue to avoid collision
|
||
// with reinit when un/plug devices
|
||
dispatch_sync(stm->context->serial_queue, ^() {
|
||
auto_lock context_lock(stm->context->mutex);
|
||
audiounit_stream_destroy_internal(stm);
|
||
});
|
||
|
||
LOG("Cubeb stream (%p) destroyed successful.", stm);
|
||
delete stm;
|
||
}
|
||
|
||
static int
|
||
audiounit_stream_start_internal(cubeb_stream * stm)
|
||
{
|
||
OSStatus r;
|
||
if (stm->input_unit != NULL) {
|
||
r = AudioOutputUnitStart(stm->input_unit);
|
||
if (r != noErr) {
|
||
LOG("AudioOutputUnitStart (input) rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
}
|
||
if (stm->output_unit != NULL) {
|
||
r = AudioOutputUnitStart(stm->output_unit);
|
||
if (r != noErr) {
|
||
LOG("AudioOutputUnitStart (output) rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_stream_start(cubeb_stream * stm)
|
||
{
|
||
auto_lock context_lock(stm->context->mutex);
|
||
stm->shutdown = false;
|
||
stm->draining = false;
|
||
|
||
int r = audiounit_stream_start_internal(stm);
|
||
if (r != CUBEB_OK) {
|
||
return r;
|
||
}
|
||
|
||
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_STARTED);
|
||
|
||
LOG("Cubeb stream (%p) started successfully.", stm);
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
void
|
||
audiounit_stream_stop_internal(cubeb_stream * stm)
|
||
{
|
||
OSStatus r;
|
||
if (stm->input_unit != NULL) {
|
||
r = AudioOutputUnitStop(stm->input_unit);
|
||
assert(r == 0);
|
||
}
|
||
if (stm->output_unit != NULL) {
|
||
r = AudioOutputUnitStop(stm->output_unit);
|
||
assert(r == 0);
|
||
}
|
||
}
|
||
|
||
static int
|
||
audiounit_stream_stop(cubeb_stream * stm)
|
||
{
|
||
auto_lock context_lock(stm->context->mutex);
|
||
stm->shutdown = true;
|
||
|
||
audiounit_stream_stop_internal(stm);
|
||
|
||
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_STOPPED);
|
||
|
||
LOG("Cubeb stream (%p) stopped successfully.", stm);
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_stream_get_position(cubeb_stream * stm, uint64_t * position)
|
||
{
|
||
assert(stm);
|
||
if (stm->current_latency_frames > stm->frames_played) {
|
||
*position = 0;
|
||
} else {
|
||
*position = stm->frames_played - stm->current_latency_frames;
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
int
|
||
audiounit_stream_get_latency(cubeb_stream * stm, uint32_t * latency)
|
||
{
|
||
#if TARGET_OS_IPHONE
|
||
// TODO
|
||
return CUBEB_ERROR_NOT_SUPPORTED;
|
||
#else
|
||
*latency = stm->total_output_latency_frames;
|
||
return CUBEB_OK;
|
||
#endif
|
||
}
|
||
|
||
static int
|
||
audiounit_stream_get_volume(cubeb_stream * stm, float * volume)
|
||
{
|
||
assert(stm->output_unit);
|
||
OSStatus r = AudioUnitGetParameter(stm->output_unit, kHALOutputParam_Volume,
|
||
kAudioUnitScope_Global, 0, volume);
|
||
if (r != noErr) {
|
||
LOG("AudioUnitGetParameter/kHALOutputParam_Volume rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static int
|
||
audiounit_stream_set_volume(cubeb_stream * stm, float volume)
|
||
{
|
||
assert(stm->output_unit);
|
||
OSStatus r;
|
||
r = AudioUnitSetParameter(stm->output_unit, kHALOutputParam_Volume,
|
||
kAudioUnitScope_Global, 0, volume, 0);
|
||
|
||
if (r != noErr) {
|
||
LOG("AudioUnitSetParameter/kHALOutputParam_Volume rv=%d", r);
|
||
return CUBEB_ERROR;
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
unique_ptr<char[]>
|
||
convert_uint32_into_string(UInt32 data)
|
||
{
|
||
// Simply create an empty string if no data.
|
||
size_t size = data == 0 ? 0 : 4; // 4 bytes for uint32.
|
||
auto str = unique_ptr<char[]>{new char[size + 1]}; // + 1 for '\0'.
|
||
str[size] = '\0';
|
||
if (size < 4) {
|
||
return str;
|
||
}
|
||
|
||
// Reverse 0xWXYZ into 0xZYXW.
|
||
str[0] = (char)(data >> 24);
|
||
str[1] = (char)(data >> 16);
|
||
str[2] = (char)(data >> 8);
|
||
str[3] = (char)(data);
|
||
return str;
|
||
}
|
||
|
||
int
|
||
audiounit_get_default_device_datasource(cubeb_device_type type, UInt32 * data)
|
||
{
|
||
AudioDeviceID id = audiounit_get_default_device_id(type);
|
||
if (id == kAudioObjectUnknown) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
UInt32 size = sizeof(*data);
|
||
/* This fails with some USB headsets (e.g., Plantronic .Audio 628). */
|
||
OSStatus r = AudioObjectGetPropertyData(
|
||
id,
|
||
type == CUBEB_DEVICE_TYPE_INPUT ? &INPUT_DATA_SOURCE_PROPERTY_ADDRESS
|
||
: &OUTPUT_DATA_SOURCE_PROPERTY_ADDRESS,
|
||
0, NULL, &size, data);
|
||
if (r != noErr) {
|
||
*data = 0;
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
int
|
||
audiounit_get_default_device_name(cubeb_stream * stm,
|
||
cubeb_device * const device,
|
||
cubeb_device_type type)
|
||
{
|
||
assert(stm);
|
||
assert(device);
|
||
|
||
UInt32 data;
|
||
int r = audiounit_get_default_device_datasource(type, &data);
|
||
if (r != CUBEB_OK) {
|
||
return r;
|
||
}
|
||
char ** name = type == CUBEB_DEVICE_TYPE_INPUT ? &device->input_name
|
||
: &device->output_name;
|
||
*name = convert_uint32_into_string(data).release();
|
||
if (!strlen(*name)) { // empty string.
|
||
LOG("(%p) name of %s device is empty!", stm,
|
||
type == CUBEB_DEVICE_TYPE_INPUT ? "input" : "output");
|
||
}
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
int
|
||
audiounit_stream_get_current_device(cubeb_stream * stm,
|
||
cubeb_device ** const device)
|
||
{
|
||
#if TARGET_OS_IPHONE
|
||
// TODO
|
||
return CUBEB_ERROR_NOT_SUPPORTED;
|
||
#else
|
||
*device = new cubeb_device;
|
||
if (!*device) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
PodZero(*device, 1);
|
||
|
||
int r =
|
||
audiounit_get_default_device_name(stm, *device, CUBEB_DEVICE_TYPE_OUTPUT);
|
||
if (r != CUBEB_OK) {
|
||
return r;
|
||
}
|
||
|
||
r = audiounit_get_default_device_name(stm, *device, CUBEB_DEVICE_TYPE_INPUT);
|
||
if (r != CUBEB_OK) {
|
||
return r;
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
#endif
|
||
}
|
||
|
||
int
|
||
audiounit_stream_device_destroy(cubeb_stream * /* stream */,
|
||
cubeb_device * device)
|
||
{
|
||
delete[] device->output_name;
|
||
delete[] device->input_name;
|
||
delete device;
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
int
|
||
audiounit_stream_register_device_changed_callback(
|
||
cubeb_stream * stream,
|
||
cubeb_device_changed_callback device_changed_callback)
|
||
{
|
||
auto_lock dev_cb_lock(stream->device_changed_callback_lock);
|
||
/* Note: second register without unregister first causes 'nope' error.
|
||
* Current implementation requires unregister before register a new cb. */
|
||
assert(!device_changed_callback || !stream->device_changed_callback);
|
||
stream->device_changed_callback = device_changed_callback;
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static char *
|
||
audiounit_strref_to_cstr_utf8(CFStringRef strref)
|
||
{
|
||
CFIndex len, size;
|
||
char * ret;
|
||
if (strref == NULL) {
|
||
return NULL;
|
||
}
|
||
|
||
len = CFStringGetLength(strref);
|
||
// Add 1 to size to allow for '\0' termination character.
|
||
size = CFStringGetMaximumSizeForEncoding(len, kCFStringEncodingUTF8) + 1;
|
||
ret = new char[size];
|
||
|
||
if (!CFStringGetCString(strref, ret, size, kCFStringEncodingUTF8)) {
|
||
delete[] ret;
|
||
ret = NULL;
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
static uint32_t
|
||
audiounit_get_channel_count(AudioObjectID devid, AudioObjectPropertyScope scope)
|
||
{
|
||
AudioObjectPropertyAddress adr = {0, scope,
|
||
kAudioObjectPropertyElementMaster};
|
||
UInt32 size = 0;
|
||
uint32_t i, ret = 0;
|
||
|
||
adr.mSelector = kAudioDevicePropertyStreamConfiguration;
|
||
|
||
if (AudioObjectGetPropertyDataSize(devid, &adr, 0, NULL, &size) == noErr &&
|
||
size > 0) {
|
||
AudioBufferList * list = static_cast<AudioBufferList *>(alloca(size));
|
||
if (AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, list) ==
|
||
noErr) {
|
||
for (i = 0; i < list->mNumberBuffers; i++)
|
||
ret += list->mBuffers[i].mNumberChannels;
|
||
}
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
static void
|
||
audiounit_get_available_samplerate(AudioObjectID devid,
|
||
AudioObjectPropertyScope scope,
|
||
uint32_t * min, uint32_t * max,
|
||
uint32_t * def)
|
||
{
|
||
AudioObjectPropertyAddress adr = {0, scope,
|
||
kAudioObjectPropertyElementMaster};
|
||
|
||
adr.mSelector = kAudioDevicePropertyNominalSampleRate;
|
||
if (AudioObjectHasProperty(devid, &adr)) {
|
||
UInt32 size = sizeof(Float64);
|
||
Float64 fvalue = 0.0;
|
||
if (AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, &fvalue) ==
|
||
noErr) {
|
||
*def = fvalue;
|
||
}
|
||
}
|
||
|
||
adr.mSelector = kAudioDevicePropertyAvailableNominalSampleRates;
|
||
UInt32 size = 0;
|
||
AudioValueRange range;
|
||
if (AudioObjectHasProperty(devid, &adr) &&
|
||
AudioObjectGetPropertyDataSize(devid, &adr, 0, NULL, &size) == noErr) {
|
||
uint32_t count = size / sizeof(AudioValueRange);
|
||
vector<AudioValueRange> ranges(count);
|
||
range.mMinimum = 9999999999.0;
|
||
range.mMaximum = 0.0;
|
||
if (AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size,
|
||
ranges.data()) == noErr) {
|
||
for (uint32_t i = 0; i < count; i++) {
|
||
if (ranges[i].mMaximum > range.mMaximum)
|
||
range.mMaximum = ranges[i].mMaximum;
|
||
if (ranges[i].mMinimum < range.mMinimum)
|
||
range.mMinimum = ranges[i].mMinimum;
|
||
}
|
||
}
|
||
*max = static_cast<uint32_t>(range.mMaximum);
|
||
*min = static_cast<uint32_t>(range.mMinimum);
|
||
} else {
|
||
*min = *max = 0;
|
||
}
|
||
}
|
||
|
||
static UInt32
|
||
audiounit_get_device_presentation_latency(AudioObjectID devid,
|
||
AudioObjectPropertyScope scope)
|
||
{
|
||
AudioObjectPropertyAddress adr = {0, scope,
|
||
kAudioObjectPropertyElementMaster};
|
||
UInt32 size, dev, stream = 0;
|
||
AudioStreamID sid[1];
|
||
|
||
adr.mSelector = kAudioDevicePropertyLatency;
|
||
size = sizeof(UInt32);
|
||
if (AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, &dev) != noErr) {
|
||
dev = 0;
|
||
}
|
||
|
||
adr.mSelector = kAudioDevicePropertyStreams;
|
||
size = sizeof(sid);
|
||
if (AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, sid) == noErr) {
|
||
adr.mSelector = kAudioStreamPropertyLatency;
|
||
size = sizeof(UInt32);
|
||
AudioObjectGetPropertyData(sid[0], &adr, 0, NULL, &size, &stream);
|
||
}
|
||
|
||
return dev + stream;
|
||
}
|
||
|
||
static int
|
||
audiounit_create_device_from_hwdev(cubeb_device_info * dev_info,
|
||
AudioObjectID devid, cubeb_device_type type)
|
||
{
|
||
AudioObjectPropertyAddress adr = {0, 0, kAudioObjectPropertyElementMaster};
|
||
UInt32 size;
|
||
|
||
if (type == CUBEB_DEVICE_TYPE_OUTPUT) {
|
||
adr.mScope = kAudioDevicePropertyScopeOutput;
|
||
} else if (type == CUBEB_DEVICE_TYPE_INPUT) {
|
||
adr.mScope = kAudioDevicePropertyScopeInput;
|
||
} else {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
UInt32 ch = audiounit_get_channel_count(devid, adr.mScope);
|
||
if (ch == 0) {
|
||
return CUBEB_ERROR;
|
||
}
|
||
|
||
PodZero(dev_info, 1);
|
||
|
||
CFStringRef device_id_str = nullptr;
|
||
size = sizeof(CFStringRef);
|
||
adr.mSelector = kAudioDevicePropertyDeviceUID;
|
||
OSStatus ret =
|
||
AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, &device_id_str);
|
||
if (ret == noErr && device_id_str != NULL) {
|
||
dev_info->device_id = audiounit_strref_to_cstr_utf8(device_id_str);
|
||
static_assert(sizeof(cubeb_devid) >= sizeof(decltype(devid)),
|
||
"cubeb_devid can't represent devid");
|
||
dev_info->devid = reinterpret_cast<cubeb_devid>(devid);
|
||
dev_info->group_id = dev_info->device_id;
|
||
CFRelease(device_id_str);
|
||
}
|
||
|
||
CFStringRef friendly_name_str = nullptr;
|
||
UInt32 ds;
|
||
size = sizeof(UInt32);
|
||
adr.mSelector = kAudioDevicePropertyDataSource;
|
||
ret = AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, &ds);
|
||
if (ret == noErr) {
|
||
AudioValueTranslation trl = {&ds, sizeof(ds), &friendly_name_str,
|
||
sizeof(CFStringRef)};
|
||
adr.mSelector = kAudioDevicePropertyDataSourceNameForIDCFString;
|
||
size = sizeof(AudioValueTranslation);
|
||
AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, &trl);
|
||
}
|
||
|
||
// If there is no datasource for this device, fall back to the
|
||
// device name.
|
||
if (!friendly_name_str) {
|
||
size = sizeof(CFStringRef);
|
||
adr.mSelector = kAudioObjectPropertyName;
|
||
AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, &friendly_name_str);
|
||
}
|
||
|
||
if (friendly_name_str) {
|
||
dev_info->friendly_name = audiounit_strref_to_cstr_utf8(friendly_name_str);
|
||
CFRelease(friendly_name_str);
|
||
} else {
|
||
// Couldn't get a datasource name nor a device name, return a
|
||
// valid string of length 0.
|
||
char * fallback_name = new char[1];
|
||
fallback_name[0] = '\0';
|
||
dev_info->friendly_name = fallback_name;
|
||
}
|
||
|
||
CFStringRef vendor_name_str = nullptr;
|
||
size = sizeof(CFStringRef);
|
||
adr.mSelector = kAudioObjectPropertyManufacturer;
|
||
ret =
|
||
AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, &vendor_name_str);
|
||
if (ret == noErr && vendor_name_str != NULL) {
|
||
dev_info->vendor_name = audiounit_strref_to_cstr_utf8(vendor_name_str);
|
||
CFRelease(vendor_name_str);
|
||
}
|
||
|
||
dev_info->type = type;
|
||
dev_info->state = CUBEB_DEVICE_STATE_ENABLED;
|
||
dev_info->preferred = (devid == audiounit_get_default_device_id(type))
|
||
? CUBEB_DEVICE_PREF_ALL
|
||
: CUBEB_DEVICE_PREF_NONE;
|
||
|
||
dev_info->max_channels = ch;
|
||
dev_info->format =
|
||
(cubeb_device_fmt)CUBEB_DEVICE_FMT_ALL; /* CoreAudio supports All! */
|
||
/* kAudioFormatFlagsAudioUnitCanonical is deprecated, prefer floating point */
|
||
dev_info->default_format = CUBEB_DEVICE_FMT_F32NE;
|
||
audiounit_get_available_samplerate(devid, adr.mScope, &dev_info->min_rate,
|
||
&dev_info->max_rate,
|
||
&dev_info->default_rate);
|
||
|
||
UInt32 latency = audiounit_get_device_presentation_latency(devid, adr.mScope);
|
||
|
||
AudioValueRange range;
|
||
adr.mSelector = kAudioDevicePropertyBufferFrameSizeRange;
|
||
size = sizeof(AudioValueRange);
|
||
ret = AudioObjectGetPropertyData(devid, &adr, 0, NULL, &size, &range);
|
||
if (ret == noErr) {
|
||
dev_info->latency_lo = latency + range.mMinimum;
|
||
dev_info->latency_hi = latency + range.mMaximum;
|
||
} else {
|
||
dev_info->latency_lo =
|
||
10 * dev_info->default_rate / 1000; /* Default to 10ms */
|
||
dev_info->latency_hi =
|
||
100 * dev_info->default_rate / 1000; /* Default to 100ms */
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
bool
|
||
is_aggregate_device(cubeb_device_info * device_info)
|
||
{
|
||
assert(device_info->friendly_name);
|
||
return !strncmp(device_info->friendly_name, PRIVATE_AGGREGATE_DEVICE_NAME,
|
||
strlen(PRIVATE_AGGREGATE_DEVICE_NAME));
|
||
}
|
||
|
||
static int
|
||
audiounit_enumerate_devices(cubeb * /* context */, cubeb_device_type type,
|
||
cubeb_device_collection * collection)
|
||
{
|
||
vector<AudioObjectID> input_devs;
|
||
vector<AudioObjectID> output_devs;
|
||
|
||
// Count number of input and output devices. This is not
|
||
// necessarily the same as the count of raw devices supported by the
|
||
// system since, for example, with Soundflower installed, some
|
||
// devices may report as being both input *and* output and cubeb
|
||
// separates those into two different devices.
|
||
|
||
if (type & CUBEB_DEVICE_TYPE_OUTPUT) {
|
||
output_devs = audiounit_get_devices_of_type(CUBEB_DEVICE_TYPE_OUTPUT);
|
||
}
|
||
|
||
if (type & CUBEB_DEVICE_TYPE_INPUT) {
|
||
input_devs = audiounit_get_devices_of_type(CUBEB_DEVICE_TYPE_INPUT);
|
||
}
|
||
|
||
auto devices = new cubeb_device_info[output_devs.size() + input_devs.size()];
|
||
collection->count = 0;
|
||
|
||
if (type & CUBEB_DEVICE_TYPE_OUTPUT) {
|
||
for (auto dev : output_devs) {
|
||
auto device = &devices[collection->count];
|
||
auto err = audiounit_create_device_from_hwdev(device, dev,
|
||
CUBEB_DEVICE_TYPE_OUTPUT);
|
||
if (err != CUBEB_OK || is_aggregate_device(device)) {
|
||
continue;
|
||
}
|
||
collection->count += 1;
|
||
}
|
||
}
|
||
|
||
if (type & CUBEB_DEVICE_TYPE_INPUT) {
|
||
for (auto dev : input_devs) {
|
||
auto device = &devices[collection->count];
|
||
auto err = audiounit_create_device_from_hwdev(device, dev,
|
||
CUBEB_DEVICE_TYPE_INPUT);
|
||
if (err != CUBEB_OK || is_aggregate_device(device)) {
|
||
continue;
|
||
}
|
||
collection->count += 1;
|
||
}
|
||
}
|
||
|
||
if (collection->count > 0) {
|
||
collection->device = devices;
|
||
} else {
|
||
delete[] devices;
|
||
collection->device = NULL;
|
||
}
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static void
|
||
audiounit_device_destroy(cubeb_device_info * device)
|
||
{
|
||
delete[] device->device_id;
|
||
delete[] device->friendly_name;
|
||
delete[] device->vendor_name;
|
||
}
|
||
|
||
static int
|
||
audiounit_device_collection_destroy(cubeb * /* context */,
|
||
cubeb_device_collection * collection)
|
||
{
|
||
for (size_t i = 0; i < collection->count; i++) {
|
||
audiounit_device_destroy(&collection->device[i]);
|
||
}
|
||
delete[] collection->device;
|
||
|
||
return CUBEB_OK;
|
||
}
|
||
|
||
static vector<AudioObjectID>
|
||
audiounit_get_devices_of_type(cubeb_device_type devtype)
|
||
{
|
||
UInt32 size = 0;
|
||
OSStatus ret = AudioObjectGetPropertyDataSize(
|
||
kAudioObjectSystemObject, &DEVICES_PROPERTY_ADDRESS, 0, NULL, &size);
|
||
if (ret != noErr) {
|
||
return vector<AudioObjectID>();
|
||
}
|
||
vector<AudioObjectID> devices(size / sizeof(AudioObjectID));
|
||
ret = AudioObjectGetPropertyData(kAudioObjectSystemObject,
|
||
&DEVICES_PROPERTY_ADDRESS, 0, NULL, &size,
|
||
devices.data());
|
||
if (ret != noErr) {
|
||
return vector<AudioObjectID>();
|
||
}
|
||
|
||
// Remove the aggregate device from the list of devices (if any).
|
||
for (auto it = devices.begin(); it != devices.end();) {
|
||
CFStringRef name = get_device_name(*it);
|
||
if (name && CFStringFind(name, CFSTR("CubebAggregateDevice"), 0).location !=
|
||
kCFNotFound) {
|
||
it = devices.erase(it);
|
||
} else {
|
||
it++;
|
||
}
|
||
if (name) {
|
||
CFRelease(name);
|
||
}
|
||
}
|
||
|
||
/* Expected sorted but did not find anything in the docs. */
|
||
sort(devices.begin(), devices.end(),
|
||
[](AudioObjectID a, AudioObjectID b) { return a < b; });
|
||
|
||
if (devtype == (CUBEB_DEVICE_TYPE_INPUT | CUBEB_DEVICE_TYPE_OUTPUT)) {
|
||
return devices;
|
||
}
|
||
|
||
AudioObjectPropertyScope scope = (devtype == CUBEB_DEVICE_TYPE_INPUT)
|
||
? kAudioDevicePropertyScopeInput
|
||
: kAudioDevicePropertyScopeOutput;
|
||
|
||
vector<AudioObjectID> devices_in_scope;
|
||
for (uint32_t i = 0; i < devices.size(); ++i) {
|
||
/* For device in the given scope channel must be > 0. */
|
||
if (audiounit_get_channel_count(devices[i], scope) > 0) {
|
||
devices_in_scope.push_back(devices[i]);
|
||
}
|
||
}
|
||
|
||
return devices_in_scope;
|
||
}
|
||
|
||
static OSStatus
|
||
audiounit_collection_changed_callback(
|
||
AudioObjectID /* inObjectID */, UInt32 /* inNumberAddresses */,
|
||
const AudioObjectPropertyAddress * /* inAddresses */, void * inClientData)
|
||
{
|
||
cubeb * context = static_cast<cubeb *>(inClientData);
|
||
|
||
// This can be called from inside an AudioUnit function, dispatch to another
|
||
// queue.
|
||
dispatch_async(context->serial_queue, ^() {
|
||
auto_lock lock(context->mutex);
|
||
if (!context->input_collection_changed_callback &&
|
||
!context->output_collection_changed_callback) {
|
||
/* Listener removed while waiting in mutex, abort. */
|
||
return;
|
||
}
|
||
if (context->input_collection_changed_callback) {
|
||
vector<AudioObjectID> devices =
|
||
audiounit_get_devices_of_type(CUBEB_DEVICE_TYPE_INPUT);
|
||
/* Elements in the vector expected sorted. */
|
||
if (context->input_device_array != devices) {
|
||
context->input_device_array = devices;
|
||
context->input_collection_changed_callback(
|
||
context, context->input_collection_changed_user_ptr);
|
||
}
|
||
}
|
||
if (context->output_collection_changed_callback) {
|
||
vector<AudioObjectID> devices =
|
||
audiounit_get_devices_of_type(CUBEB_DEVICE_TYPE_OUTPUT);
|
||
/* Elements in the vector expected sorted. */
|
||
if (context->output_device_array != devices) {
|
||
context->output_device_array = devices;
|
||
context->output_collection_changed_callback(
|
||
context, context->output_collection_changed_user_ptr);
|
||
}
|
||
}
|
||
});
|
||
return noErr;
|
||
}
|
||
|
||
static OSStatus
|
||
audiounit_add_device_listener(
|
||
cubeb * context, cubeb_device_type devtype,
|
||
cubeb_device_collection_changed_callback collection_changed_callback,
|
||
void * user_ptr)
|
||
{
|
||
context->mutex.assert_current_thread_owns();
|
||
assert(devtype & (CUBEB_DEVICE_TYPE_INPUT | CUBEB_DEVICE_TYPE_OUTPUT));
|
||
/* Note: second register without unregister first causes 'nope' error.
|
||
* Current implementation requires unregister before register a new cb. */
|
||
assert((devtype & CUBEB_DEVICE_TYPE_INPUT) &&
|
||
!context->input_collection_changed_callback ||
|
||
(devtype & CUBEB_DEVICE_TYPE_OUTPUT) &&
|
||
!context->output_collection_changed_callback);
|
||
|
||
if (!context->input_collection_changed_callback &&
|
||
!context->output_collection_changed_callback) {
|
||
OSStatus ret = AudioObjectAddPropertyListener(
|
||
kAudioObjectSystemObject, &DEVICES_PROPERTY_ADDRESS,
|
||
audiounit_collection_changed_callback, context);
|
||
if (ret != noErr) {
|
||
return ret;
|
||
}
|
||
}
|
||
if (devtype & CUBEB_DEVICE_TYPE_INPUT) {
|
||
/* Expected empty after unregister. */
|
||
assert(context->input_device_array.empty());
|
||
context->input_device_array =
|
||
audiounit_get_devices_of_type(CUBEB_DEVICE_TYPE_INPUT);
|
||
context->input_collection_changed_callback = collection_changed_callback;
|
||
context->input_collection_changed_user_ptr = user_ptr;
|
||
}
|
||
if (devtype & CUBEB_DEVICE_TYPE_OUTPUT) {
|
||
/* Expected empty after unregister. */
|
||
assert(context->output_device_array.empty());
|
||
context->output_device_array =
|
||
audiounit_get_devices_of_type(CUBEB_DEVICE_TYPE_OUTPUT);
|
||
context->output_collection_changed_callback = collection_changed_callback;
|
||
context->output_collection_changed_user_ptr = user_ptr;
|
||
}
|
||
return noErr;
|
||
}
|
||
|
||
static OSStatus
|
||
audiounit_remove_device_listener(cubeb * context, cubeb_device_type devtype)
|
||
{
|
||
context->mutex.assert_current_thread_owns();
|
||
|
||
if (devtype & CUBEB_DEVICE_TYPE_INPUT) {
|
||
context->input_collection_changed_callback = nullptr;
|
||
context->input_collection_changed_user_ptr = nullptr;
|
||
context->input_device_array.clear();
|
||
}
|
||
if (devtype & CUBEB_DEVICE_TYPE_OUTPUT) {
|
||
context->output_collection_changed_callback = nullptr;
|
||
context->output_collection_changed_user_ptr = nullptr;
|
||
context->output_device_array.clear();
|
||
}
|
||
|
||
if (context->input_collection_changed_callback ||
|
||
context->output_collection_changed_callback) {
|
||
return noErr;
|
||
}
|
||
/* Note: unregister a non registered cb is not a problem, not checking. */
|
||
return AudioObjectRemovePropertyListener(
|
||
kAudioObjectSystemObject, &DEVICES_PROPERTY_ADDRESS,
|
||
audiounit_collection_changed_callback, context);
|
||
}
|
||
|
||
int
|
||
audiounit_register_device_collection_changed(
|
||
cubeb * context, cubeb_device_type devtype,
|
||
cubeb_device_collection_changed_callback collection_changed_callback,
|
||
void * user_ptr)
|
||
{
|
||
if (devtype == CUBEB_DEVICE_TYPE_UNKNOWN) {
|
||
return CUBEB_ERROR_INVALID_PARAMETER;
|
||
}
|
||
OSStatus ret;
|
||
auto_lock lock(context->mutex);
|
||
if (collection_changed_callback) {
|
||
ret = audiounit_add_device_listener(context, devtype,
|
||
collection_changed_callback, user_ptr);
|
||
} else {
|
||
ret = audiounit_remove_device_listener(context, devtype);
|
||
}
|
||
return (ret == noErr) ? CUBEB_OK : CUBEB_ERROR;
|
||
}
|
||
|
||
cubeb_ops const audiounit_ops = {
|
||
/*.init =*/audiounit_init,
|
||
/*.get_backend_id =*/audiounit_get_backend_id,
|
||
/*.get_max_channel_count =*/audiounit_get_max_channel_count,
|
||
/*.get_min_latency =*/audiounit_get_min_latency,
|
||
/*.get_preferred_sample_rate =*/audiounit_get_preferred_sample_rate,
|
||
/*.get_supported_input_processing_params =*/NULL,
|
||
/*.enumerate_devices =*/audiounit_enumerate_devices,
|
||
/*.device_collection_destroy =*/audiounit_device_collection_destroy,
|
||
/*.destroy =*/audiounit_destroy,
|
||
/*.stream_init =*/audiounit_stream_init,
|
||
/*.stream_destroy =*/audiounit_stream_destroy,
|
||
/*.stream_start =*/audiounit_stream_start,
|
||
/*.stream_stop =*/audiounit_stream_stop,
|
||
/*.stream_get_position =*/audiounit_stream_get_position,
|
||
/*.stream_get_latency =*/audiounit_stream_get_latency,
|
||
/*.stream_get_input_latency =*/NULL,
|
||
/*.stream_set_volume =*/audiounit_stream_set_volume,
|
||
/*.stream_set_name =*/NULL,
|
||
/*.stream_get_current_device =*/audiounit_stream_get_current_device,
|
||
/*.stream_set_input_mute =*/NULL,
|
||
/*.stream_set_input_processing_params =*/NULL,
|
||
/*.stream_device_destroy =*/audiounit_stream_device_destroy,
|
||
/*.stream_register_device_changed_callback =*/
|
||
audiounit_stream_register_device_changed_callback,
|
||
/*.register_device_collection_changed =*/
|
||
audiounit_register_device_collection_changed};
|