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dolphin/Externals/cubeb/src/cubeb_opensl.c

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/*
* Copyright © 2012 Mozilla Foundation
*
* This program is made available under an ISC-style license. See the
* accompanying file LICENSE for details.
*/
#undef NDEBUG
#include <assert.h>
#include <dlfcn.h>
#include <stdlib.h>
#include <pthread.h>
#include <errno.h>
#include <SLES/OpenSLES.h>
#include <math.h>
#include <time.h>
#if defined(__ANDROID__)
#include <dlfcn.h>
#include <sys/system_properties.h>
#include "android/sles_definitions.h"
#include <SLES/OpenSLES_Android.h>
#include <android/log.h>
#include <android/api-level.h>
#endif
#include "cubeb/cubeb.h"
#include "cubeb-internal.h"
#include "cubeb_resampler.h"
#include "cubeb-sles.h"
#include "cubeb_array_queue.h"
#if defined(__ANDROID__)
#ifdef LOG
#undef LOG
#endif
//#define LOGGING_ENABLED
#ifdef LOGGING_ENABLED
#define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "Cubeb_OpenSL" , ## args)
#else
#define LOG(...)
#endif
//#define TIMESTAMP_ENABLED
#ifdef TIMESTAMP_ENABLED
#define FILENAME (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
#define LOG_TS(args...) __android_log_print(ANDROID_LOG_INFO, "Cubeb_OpenSL ES: Timestamp(usec)" , ## args)
#define TIMESTAMP(msg) do { \
struct timeval timestamp; \
int ts_ret = gettimeofday(&timestamp, NULL); \
if (ts_ret == 0) { \
LOG_TS("%lld: %s (%s %s:%d)", timestamp.tv_sec * 1000000LL + timestamp.tv_usec, msg, __FUNCTION__, FILENAME, __LINE__);\
} else { \
LOG_TS("Error: %s (%s %s:%d) - %s", msg, __FUNCTION__, FILENAME, __LINE__);\
} \
} while(0)
#else
#define TIMESTAMP(...)
#endif
#define ANDROID_VERSION_GINGERBREAD_MR1 10
#define ANDROID_VERSION_LOLLIPOP 21
#define ANDROID_VERSION_MARSHMALLOW 23
#endif
#define DEFAULT_SAMPLE_RATE 48000
static struct cubeb_ops const opensl_ops;
struct cubeb {
struct cubeb_ops const * ops;
void * lib;
void * libmedia;
int32_t (* get_output_latency)(uint32_t * latency, int stream_type);
SLInterfaceID SL_IID_BUFFERQUEUE;
SLInterfaceID SL_IID_PLAY;
#if defined(__ANDROID__)
SLInterfaceID SL_IID_ANDROIDCONFIGURATION;
SLInterfaceID SL_IID_ANDROIDSIMPLEBUFFERQUEUE;
#endif
SLInterfaceID SL_IID_VOLUME;
SLInterfaceID SL_IID_RECORD;
SLObjectItf engObj;
SLEngineItf eng;
SLObjectItf outmixObj;
};
#define NELEMS(A) (sizeof(A) / sizeof A[0])
#define NBUFS 4
#define AUDIO_STREAM_TYPE_MUSIC 3
struct cubeb_stream {
cubeb * context;
pthread_mutex_t mutex;
SLObjectItf playerObj;
SLPlayItf play;
SLBufferQueueItf bufq;
SLVolumeItf volume;
void ** queuebuf;
uint32_t queuebuf_capacity;
int queuebuf_idx;
long queuebuf_len;
long bytespersec;
long framesize;
/* Total number of played frames.
* Synchronized by stream::mutex lock. */
long written;
/* Flag indicating draining. Synchronized
* by stream::mutex lock. */
int draining;
/* Flags to determine in/out.*/
uint32_t input_enabled;
uint32_t output_enabled;
/* Recorder abstract object. */
SLObjectItf recorderObj;
/* Recorder Itf for input capture. */
SLRecordItf recorderItf;
/* Buffer queue for input capture. */
SLAndroidSimpleBufferQueueItf recorderBufferQueueItf;
/* Store input buffers. */
void ** input_buffer_array;
/* The capacity of the array.
* On capture only can be small (4).
* On full duplex is calculated to
* store 1 sec of data buffers. */
uint32_t input_array_capacity;
/* Current filled index of input buffer array.
* It is initiated to -1 indicating buffering
* have not started yet. */
int input_buffer_index;
/* Length of input buffer.*/
uint32_t input_buffer_length;
/* Input frame size */
uint32_t input_frame_size;
/* Device sampling rate. If user rate is not
* accepted an compatible rate is set. If it is
* accepted this is equal to params.rate. */
uint32_t input_device_rate;
/* Exchange input buffers between input
* and full duplex threads. */
array_queue * input_queue;
/* Silent input buffer used on full duplex. */
void * input_silent_buffer;
/* Number of input frames from the start of the stream*/
uint32_t input_total_frames;
/* Flag to stop the execution of user callback and
* close all working threads. Synchronized by
* stream::mutex lock. */
uint32_t shutdown;
/* Store user callback. */
cubeb_data_callback data_callback;
/* Store state callback. */
cubeb_state_callback state_callback;
/* User pointer for data & state callbacks*/
void * user_ptr;
cubeb_resampler * resampler;
unsigned int inputrate;
unsigned int output_configured_rate;
unsigned int latency_frames;
int64_t lastPosition;
int64_t lastPositionTimeStamp;
int64_t lastCompensativePosition;
};
/* Forward declaration. */
static int opensl_stop_player(cubeb_stream * stm);
static int opensl_stop_recorder(cubeb_stream * stm);
static int
opensl_get_draining(cubeb_stream * stm)
{
#ifdef DEBUG
int r = pthread_mutex_trylock(&stm->mutex);
assert((r == EDEADLK || r == EBUSY) && "get_draining: mutex should be locked but it's not.");
#endif
return stm->draining;
}
static void
opensl_set_draining(cubeb_stream * stm, int value)
{
#ifdef DEBUG
int r = pthread_mutex_trylock(&stm->mutex);
LOG("set draining try r = %d", r);
assert((r == EDEADLK || r == EBUSY) && "set_draining: mutex should be locked but it's not.");
#endif
assert(value == 0 || value == 1);
stm->draining = value;
}
static void
opensl_notify_drained(cubeb_stream * stm)
{
assert(stm);
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (draining) {
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_DRAINED);
if (stm->play) {
LOG("stop player in play_callback");
r = opensl_stop_player(stm);
assert(r == CUBEB_OK);
}
if (stm->recorderItf) {
r = opensl_stop_recorder(stm);
assert(r == CUBEB_OK);
}
}
}
static uint32_t
opensl_get_shutdown(cubeb_stream * stm)
{
#ifdef DEBUG
int r = pthread_mutex_trylock(&stm->mutex);
assert((r == EDEADLK || r == EBUSY) && "get_shutdown: mutex should be locked but it's not.");
#endif
return stm->shutdown;
}
static void
opensl_set_shutdown(cubeb_stream * stm, uint32_t value)
{
#ifdef DEBUG
int r = pthread_mutex_trylock(&stm->mutex);
LOG("set shutdown try r = %d", r);
assert((r == EDEADLK || r == EBUSY) && "set_shutdown: mutex should be locked but it's not.");
#endif
assert(value == 0 || value == 1);
stm->shutdown = value;
}
static void
play_callback(SLPlayItf caller, void * user_ptr, SLuint32 event)
{
cubeb_stream * stm = user_ptr;
int draining;
assert(stm);
switch (event) {
case SL_PLAYEVENT_HEADATMARKER:
opensl_notify_drained(stm);
break;
default:
break;
}
}
static void
recorder_marker_callback (SLRecordItf caller, void * pContext, SLuint32 event)
{
cubeb_stream * stm = pContext;
assert(stm);
if (event == SL_RECORDEVENT_HEADATMARKER) {
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (draining) {
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_DRAINED);
if (stm->recorderItf) {
r = opensl_stop_recorder(stm);
assert(r == CUBEB_OK);
}
if (stm->play) {
r = opensl_stop_player(stm);
assert(r == CUBEB_OK);
}
}
}
}
static void
bufferqueue_callback(SLBufferQueueItf caller, void * user_ptr)
{
cubeb_stream * stm = user_ptr;
assert(stm);
SLBufferQueueState state;
SLresult res;
long written = 0;
res = (*stm->bufq)->GetState(stm->bufq, &state);
assert(res == SL_RESULT_SUCCESS);
if (state.count > 1) {
return;
}
uint8_t *buf = stm->queuebuf[stm->queuebuf_idx];
written = 0;
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
uint32_t shutdown = opensl_get_shutdown(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (!draining && !shutdown) {
written = cubeb_resampler_fill(stm->resampler,
NULL, NULL,
buf, stm->queuebuf_len / stm->framesize);
LOG("bufferqueue_callback: resampler fill returned %ld frames", written);
if (written < 0 || written * stm->framesize > stm->queuebuf_len) {
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_shutdown(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
opensl_stop_player(stm);
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
return;
}
}
// Keep sending silent data even in draining mode to prevent the audio
// back-end from being stopped automatically by OpenSL/ES.
assert(stm->queuebuf_len >= written * stm->framesize);
memset(buf + written * stm->framesize, 0, stm->queuebuf_len - written * stm->framesize);
res = (*stm->bufq)->Enqueue(stm->bufq, buf, stm->queuebuf_len);
assert(res == SL_RESULT_SUCCESS);
stm->queuebuf_idx = (stm->queuebuf_idx + 1) % stm->queuebuf_capacity;
if (written > 0) {
pthread_mutex_lock(&stm->mutex);
stm->written += written;
pthread_mutex_unlock(&stm->mutex);
}
if (!draining && written * stm->framesize < stm->queuebuf_len) {
LOG("bufferqueue_callback draining");
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int64_t written_duration = INT64_C(1000) * stm->written * stm->framesize / stm->bytespersec;
opensl_set_draining(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (written_duration == 0) {
// since we didn't write any sample, it's not possible to reach the marker
// time and trigger the callback. We should initiative notify drained.
opensl_notify_drained(stm);
} else {
// Use SL_PLAYEVENT_HEADATMARKER event from slPlayCallback of SLPlayItf
// to make sure all the data has been processed.
(*stm->play)->SetMarkerPosition(stm->play, (SLmillisecond)written_duration);
}
return;
}
}
static int
opensl_enqueue_recorder(cubeb_stream * stm, void ** last_filled_buffer)
{
assert(stm);
int current_index = stm->input_buffer_index;
void * last_buffer = NULL;
if (current_index < 0) {
// This is the first enqueue
current_index = 0;
} else {
// The current index hold the last filled buffer get it before advance index.
last_buffer = stm->input_buffer_array[current_index];
// Advance to get next available buffer
current_index = (current_index + 1) % stm->input_array_capacity;
}
// enqueue next empty buffer to be filled by the recorder
SLresult res = (*stm->recorderBufferQueueItf)->Enqueue(stm->recorderBufferQueueItf,
stm->input_buffer_array[current_index],
stm->input_buffer_length);
if (res != SL_RESULT_SUCCESS ) {
LOG("Enqueue recorder failed. Error code: %lu", res);
return CUBEB_ERROR;
}
// All good, update buffer and index.
stm->input_buffer_index = current_index;
if (last_filled_buffer) {
*last_filled_buffer = last_buffer;
}
return CUBEB_OK;
}
// input data callback
void recorder_callback(SLAndroidSimpleBufferQueueItf bq, void * context)
{
assert(context);
cubeb_stream * stm = context;
assert(stm->recorderBufferQueueItf);
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
uint32_t shutdown = opensl_get_shutdown(stm);
int draining = opensl_get_draining(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (shutdown || draining) {
// According to the OpenSL ES 1.1 Specification, 8.14 SLBufferQueueItf
// page 184, on transition to the SL_RECORDSTATE_STOPPED state,
// the application should continue to enqueue buffers onto the queue
// to retrieve the residual recorded data in the system.
r = opensl_enqueue_recorder(stm, NULL);
assert(r == CUBEB_OK);
return;
}
// Enqueue next available buffer and get the last filled buffer.
void * input_buffer = NULL;
r = opensl_enqueue_recorder(stm, &input_buffer);
assert(r == CUBEB_OK);
assert(input_buffer);
// Fill resampler with last input
long input_frame_count = stm->input_buffer_length / stm->input_frame_size;
long got = cubeb_resampler_fill(stm->resampler,
input_buffer,
&input_frame_count,
NULL,
0);
// Error case
if (got < 0 || got > input_frame_count) {
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_shutdown(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
r = opensl_stop_recorder(stm);
assert(r == CUBEB_OK);
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
}
// Advance total stream frames
stm->input_total_frames += got;
if (got < input_frame_count) {
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_draining(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
int64_t duration = INT64_C(1000) * stm->input_total_frames / stm->input_device_rate;
(*stm->recorderItf)->SetMarkerPosition(stm->recorderItf, (SLmillisecond)duration);
return;
}
}
void recorder_fullduplex_callback(SLAndroidSimpleBufferQueueItf bq, void * context)
{
assert(context);
cubeb_stream * stm = context;
assert(stm->recorderBufferQueueItf);
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
uint32_t shutdown = opensl_get_shutdown(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (shutdown || draining) {
/* On draining and shutdown the recorder should have been stoped from
* the one set the flags. Accordint to the doc, on transition to
* the SL_RECORDSTATE_STOPPED state, the application should
* continue to enqueue buffers onto the queue to retrieve the residual
* recorded data in the system. */
LOG("Input shutdown %d or drain %d", shutdown, draining);
int r = opensl_enqueue_recorder(stm, NULL);
assert(r == CUBEB_OK);
return;
}
// Enqueue next available buffer and get the last filled buffer.
void * input_buffer = NULL;
r = opensl_enqueue_recorder(stm, &input_buffer);
assert(r == CUBEB_OK);
assert(input_buffer);
assert(stm->input_queue);
r = array_queue_push(stm->input_queue, input_buffer);
if (r == -1) {
LOG("Input queue is full, drop input ...");
return;
}
LOG("Input pushed in the queue, input array %zu",
array_queue_get_size(stm->input_queue));
}
static void
player_fullduplex_callback(SLBufferQueueItf caller, void * user_ptr)
{
TIMESTAMP("ENTER");
cubeb_stream * stm = user_ptr;
assert(stm);
SLresult res;
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
uint32_t shutdown = opensl_get_shutdown(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
// Get output
void * output_buffer = NULL;
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
output_buffer = stm->queuebuf[stm->queuebuf_idx];
// Advance the output buffer queue index
stm->queuebuf_idx = (stm->queuebuf_idx + 1) % stm->queuebuf_capacity;
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (shutdown || draining) {
LOG("Shutdown/draining, send silent");
// Set silent on buffer
memset(output_buffer, 0, stm->queuebuf_len);
// Enqueue data in player buffer queue
res = (*stm->bufq)->Enqueue(stm->bufq,
output_buffer,
stm->queuebuf_len);
assert(res == SL_RESULT_SUCCESS);
return;
}
// Get input.
void * input_buffer = array_queue_pop(stm->input_queue);
long input_frame_count = stm->input_buffer_length / stm->input_frame_size;
long frames_needed = stm->queuebuf_len / stm->framesize;
if (!input_buffer) {
LOG("Input hole set silent input buffer");
input_buffer = stm->input_silent_buffer;
}
long written = 0;
// Trigger user callback through resampler
written = cubeb_resampler_fill(stm->resampler,
input_buffer,
&input_frame_count,
output_buffer,
frames_needed);
LOG("Fill: written %ld, frames_needed %ld, input array size %zu",
written, frames_needed, array_queue_get_size(stm->input_queue));
if (written < 0 || written > frames_needed) {
// Error case
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_shutdown(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
opensl_stop_player(stm);
opensl_stop_recorder(stm);
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
memset(output_buffer, 0, stm->queuebuf_len);
// Enqueue data in player buffer queue
res = (*stm->bufq)->Enqueue(stm->bufq,
output_buffer,
stm->queuebuf_len);
assert(res == SL_RESULT_SUCCESS);
return;
}
// Advance total out written frames counter
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
stm->written += written;
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if ( written < frames_needed) {
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int64_t written_duration = INT64_C(1000) * stm->written * stm->framesize / stm->bytespersec;
opensl_set_draining(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
// Use SL_PLAYEVENT_HEADATMARKER event from slPlayCallback of SLPlayItf
// to make sure all the data has been processed.
(*stm->play)->SetMarkerPosition(stm->play, (SLmillisecond)written_duration);
}
// Keep sending silent data even in draining mode to prevent the audio
// back-end from being stopped automatically by OpenSL/ES.
memset((uint8_t *)output_buffer + written * stm->framesize, 0,
stm->queuebuf_len - written * stm->framesize);
// Enqueue data in player buffer queue
res = (*stm->bufq)->Enqueue(stm->bufq,
output_buffer,
stm->queuebuf_len);
assert(res == SL_RESULT_SUCCESS);
TIMESTAMP("EXIT");
}
static void opensl_destroy(cubeb * ctx);
#if defined(__ANDROID__)
#if (__ANDROID_API__ >= ANDROID_VERSION_LOLLIPOP)
typedef int (system_property_get)(const char*, char*);
static int
wrap_system_property_get(const char* name, char* value)
{
void* libc = dlopen("libc.so", RTLD_LAZY);
if (!libc) {
LOG("Failed to open libc.so");
return -1;
}
system_property_get* func = (system_property_get*)
dlsym(libc, "__system_property_get");
int ret = -1;
if (func) {
ret = func(name, value);
}
dlclose(libc);
return ret;
}
#endif
static int
get_android_version(void)
{
char version_string[PROP_VALUE_MAX];
memset(version_string, 0, PROP_VALUE_MAX);
#if (__ANDROID_API__ >= ANDROID_VERSION_LOLLIPOP)
int len = wrap_system_property_get("ro.build.version.sdk", version_string);
#else
int len = __system_property_get("ro.build.version.sdk", version_string);
#endif
if (len <= 0) {
LOG("Failed to get Android version!\n");
return len;
}
int version = (int)strtol(version_string, NULL, 10);
LOG("Android version %d", version);
return version;
}
#endif
/*static*/ int
opensl_init(cubeb ** context, char const * context_name)
{
cubeb * ctx;
#if defined(__ANDROID__)
int android_version = get_android_version();
if (android_version > 0 && android_version <= ANDROID_VERSION_GINGERBREAD_MR1) {
// Don't even attempt to run on Gingerbread and lower
return CUBEB_ERROR;
}
#endif
*context = NULL;
ctx = calloc(1, sizeof(*ctx));
assert(ctx);
ctx->ops = &opensl_ops;
ctx->lib = dlopen("libOpenSLES.so", RTLD_LAZY);
ctx->libmedia = dlopen("libmedia.so", RTLD_LAZY);
if (!ctx->lib || !ctx->libmedia) {
free(ctx);
return CUBEB_ERROR;
}
/* Get the latency, in ms, from AudioFlinger */
/* status_t AudioSystem::getOutputLatency(uint32_t* latency,
* audio_stream_type_t streamType) */
/* First, try the most recent signature. */
ctx->get_output_latency =
dlsym(ctx->libmedia, "_ZN7android11AudioSystem16getOutputLatencyEPj19audio_stream_type_t");
if (!ctx->get_output_latency) {
/* in case of failure, try the legacy version. */
/* status_t AudioSystem::getOutputLatency(uint32_t* latency,
* int streamType) */
ctx->get_output_latency =
dlsym(ctx->libmedia, "_ZN7android11AudioSystem16getOutputLatencyEPji");
if (!ctx->get_output_latency) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
}
typedef SLresult (*slCreateEngine_t)(SLObjectItf *,
SLuint32,
const SLEngineOption *,
SLuint32,
const SLInterfaceID *,
const SLboolean *);
slCreateEngine_t f_slCreateEngine =
(slCreateEngine_t)dlsym(ctx->lib, "slCreateEngine");
SLInterfaceID SL_IID_ENGINE = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_ENGINE");
SLInterfaceID SL_IID_OUTPUTMIX = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_OUTPUTMIX");
ctx->SL_IID_VOLUME = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_VOLUME");
ctx->SL_IID_BUFFERQUEUE = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_BUFFERQUEUE");
#if defined(__ANDROID__)
ctx->SL_IID_ANDROIDCONFIGURATION = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_ANDROIDCONFIGURATION");
ctx->SL_IID_ANDROIDSIMPLEBUFFERQUEUE = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_ANDROIDSIMPLEBUFFERQUEUE");
#endif
ctx->SL_IID_PLAY = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_PLAY");
ctx->SL_IID_RECORD = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_RECORD");
if (!f_slCreateEngine ||
!SL_IID_ENGINE ||
!SL_IID_OUTPUTMIX ||
!ctx->SL_IID_BUFFERQUEUE ||
#if defined(__ANDROID__)
!ctx->SL_IID_ANDROIDCONFIGURATION ||
!ctx->SL_IID_ANDROIDSIMPLEBUFFERQUEUE ||
#endif
!ctx->SL_IID_PLAY ||
!ctx->SL_IID_RECORD) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
const SLEngineOption opt[] = {{SL_ENGINEOPTION_THREADSAFE, SL_BOOLEAN_TRUE}};
SLresult res;
res = cubeb_get_sles_engine(&ctx->engObj, 1, opt, 0, NULL, NULL);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
res = cubeb_realize_sles_engine(ctx->engObj);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
res = (*ctx->engObj)->GetInterface(ctx->engObj, SL_IID_ENGINE, &ctx->eng);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
const SLInterfaceID idsom[] = {SL_IID_OUTPUTMIX};
const SLboolean reqom[] = {SL_BOOLEAN_TRUE};
res = (*ctx->eng)->CreateOutputMix(ctx->eng, &ctx->outmixObj, 1, idsom, reqom);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
res = (*ctx->outmixObj)->Realize(ctx->outmixObj, SL_BOOLEAN_FALSE);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
*context = ctx;
LOG("Cubeb init (%p) success", ctx);
return CUBEB_OK;
}
static char const *
opensl_get_backend_id(cubeb * ctx)
{
return "opensl";
}
static int
opensl_get_max_channel_count(cubeb * ctx, uint32_t * max_channels)
{
assert(ctx && max_channels);
/* The android mixer handles up to two channels, see
http://androidxref.com/4.2.2_r1/xref/frameworks/av/services/audioflinger/AudioFlinger.h#67 */
*max_channels = 2;
return CUBEB_OK;
}
static int
opensl_get_preferred_sample_rate(cubeb * ctx, uint32_t * rate)
{
/* https://android.googlesource.com/platform/ndk.git/+/master/docs/opensles/index.html
* We don't want to deal with JNI here (and we don't have Java on b2g anyways),
* so we just dlopen the library and get the two symbols we need. */
int r;
void * libmedia;
uint32_t (*get_primary_output_samplingrate)();
uint32_t (*get_output_samplingrate)(int * samplingRate, int streamType);
libmedia = dlopen("libmedia.so", RTLD_LAZY);
if (!libmedia) {
return CUBEB_ERROR;
}
/* uint32_t AudioSystem::getPrimaryOutputSamplingRate(void) */
get_primary_output_samplingrate =
dlsym(libmedia, "_ZN7android11AudioSystem28getPrimaryOutputSamplingRateEv");
if (!get_primary_output_samplingrate) {
/* fallback to
* status_t AudioSystem::getOutputSamplingRate(int* samplingRate, int streamType)
* if we cannot find getPrimaryOutputSamplingRate. */
get_output_samplingrate =
dlsym(libmedia, "_ZN7android11AudioSystem21getOutputSamplingRateEPj19audio_stream_type_t");
if (!get_output_samplingrate) {
/* Another signature exists, with a int instead of an audio_stream_type_t */
get_output_samplingrate =
dlsym(libmedia, "_ZN7android11AudioSystem21getOutputSamplingRateEPii");
if (!get_output_samplingrate) {
dlclose(libmedia);
return CUBEB_ERROR;
}
}
}
if (get_primary_output_samplingrate) {
*rate = get_primary_output_samplingrate();
} else {
/* We don't really know about the type, here, so we just pass music. */
r = get_output_samplingrate((int *) rate, AUDIO_STREAM_TYPE_MUSIC);
if (r) {
dlclose(libmedia);
return CUBEB_ERROR;
}
}
dlclose(libmedia);
/* Depending on which method we called above, we can get a zero back, yet have
* a non-error return value, especially if the audio system is not
* ready/shutting down (i.e. when we can't get our hand on the AudioFlinger
* thread). */
if (*rate == 0) {
return CUBEB_ERROR;
}
return CUBEB_OK;
}
static int
opensl_get_min_latency(cubeb * ctx, cubeb_stream_params params, uint32_t * latency_frames)
{
/* https://android.googlesource.com/platform/ndk.git/+/master/docs/opensles/index.html
* We don't want to deal with JNI here (and we don't have Java on b2g anyways),
* so we just dlopen the library and get the two symbols we need. */
int r;
void * libmedia;
size_t (*get_primary_output_frame_count)(void);
int (*get_output_frame_count)(size_t * frameCount, int streamType);
uint32_t primary_sampling_rate;
size_t primary_buffer_size;
r = opensl_get_preferred_sample_rate(ctx, &primary_sampling_rate);
if (r) {
return CUBEB_ERROR;
}
libmedia = dlopen("libmedia.so", RTLD_LAZY);
if (!libmedia) {
return CUBEB_ERROR;
}
/* JB variant */
/* size_t AudioSystem::getPrimaryOutputFrameCount(void) */
get_primary_output_frame_count =
dlsym(libmedia, "_ZN7android11AudioSystem26getPrimaryOutputFrameCountEv");
if (!get_primary_output_frame_count) {
/* ICS variant */
/* status_t AudioSystem::getOutputFrameCount(int* frameCount, int streamType) */
get_output_frame_count =
dlsym(libmedia, "_ZN7android11AudioSystem19getOutputFrameCountEPii");
if (!get_output_frame_count) {
dlclose(libmedia);
return CUBEB_ERROR;
}
}
if (get_primary_output_frame_count) {
primary_buffer_size = get_primary_output_frame_count();
} else {
if (get_output_frame_count(&primary_buffer_size, AUDIO_STREAM_TYPE_MUSIC) != 0) {
return CUBEB_ERROR;
}
}
/* To get a fast track in Android's mixer, we need to be at the native
* samplerate, which is device dependant. Some devices might be able to
* resample when playing a fast track, but it's pretty rare. */
*latency_frames = primary_buffer_size;
dlclose(libmedia);
return CUBEB_OK;
}
static void
opensl_destroy(cubeb * ctx)
{
if (ctx->outmixObj)
(*ctx->outmixObj)->Destroy(ctx->outmixObj);
if (ctx->engObj)
cubeb_destroy_sles_engine(&ctx->engObj);
dlclose(ctx->lib);
dlclose(ctx->libmedia);
free(ctx);
}
static void opensl_stream_destroy(cubeb_stream * stm);
static int
opensl_set_format(SLDataFormat_PCM * format, cubeb_stream_params * params)
{
assert(format);
assert(params);
format->formatType = SL_DATAFORMAT_PCM;
format->numChannels = params->channels;
// samplesPerSec is in milliHertz
format->samplesPerSec = params->rate * 1000;
format->bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
format->containerSize = SL_PCMSAMPLEFORMAT_FIXED_16;
format->channelMask = params->channels == 1 ?
SL_SPEAKER_FRONT_CENTER :
SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
switch (params->format) {
case CUBEB_SAMPLE_S16LE:
format->endianness = SL_BYTEORDER_LITTLEENDIAN;
break;
case CUBEB_SAMPLE_S16BE:
format->endianness = SL_BYTEORDER_BIGENDIAN;
break;
default:
return CUBEB_ERROR_INVALID_FORMAT;
}
return CUBEB_OK;
}
static int
opensl_configure_capture(cubeb_stream * stm, cubeb_stream_params * params)
{
assert(stm);
assert(params);
SLDataLocator_AndroidSimpleBufferQueue lDataLocatorOut;
lDataLocatorOut.locatorType = SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE;
lDataLocatorOut.numBuffers = NBUFS;
SLDataFormat_PCM lDataFormat;
int r = opensl_set_format(&lDataFormat, params);
if (r != CUBEB_OK) {
return CUBEB_ERROR_INVALID_FORMAT;
}
/* For now set device rate to params rate. */
stm->input_device_rate = params->rate;
SLDataSink lDataSink;
lDataSink.pLocator = &lDataLocatorOut;
lDataSink.pFormat = &lDataFormat;
SLDataLocator_IODevice lDataLocatorIn;
lDataLocatorIn.locatorType = SL_DATALOCATOR_IODEVICE;
lDataLocatorIn.deviceType = SL_IODEVICE_AUDIOINPUT;
lDataLocatorIn.deviceID = SL_DEFAULTDEVICEID_AUDIOINPUT;
lDataLocatorIn.device = NULL;
SLDataSource lDataSource;
lDataSource.pLocator = &lDataLocatorIn;
lDataSource.pFormat = NULL;
const SLuint32 lSoundRecorderIIDCount = 2;
const SLInterfaceID lSoundRecorderIIDs[] = { stm->context->SL_IID_RECORD,
stm->context->SL_IID_ANDROIDSIMPLEBUFFERQUEUE };
const SLboolean lSoundRecorderReqs[] = { SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE };
// create the audio recorder abstract object
SLresult res = (*stm->context->eng)->CreateAudioRecorder(stm->context->eng,
&stm->recorderObj,
&lDataSource,
&lDataSink,
lSoundRecorderIIDCount,
lSoundRecorderIIDs,
lSoundRecorderReqs);
// Sample rate not supported. Try again with default sample rate!
if (res == SL_RESULT_CONTENT_UNSUPPORTED) {
if (stm->output_enabled && stm->output_configured_rate != 0) {
// Set the same with the player. Since there is no
// api for input device this is a safe choice.
stm->input_device_rate = stm->output_configured_rate;
} else {
// The output preferred rate is used for input only scenario. This is
// the correct rate to use to get a fast track for input only.
r = opensl_get_preferred_sample_rate(stm->context, &stm->input_device_rate);
if (r != CUBEB_OK) {
// If everything else fail use a safe choice for Android.
stm->input_device_rate = DEFAULT_SAMPLE_RATE;
}
}
lDataFormat.samplesPerSec = stm->input_device_rate * 1000;
res = (*stm->context->eng)->CreateAudioRecorder(stm->context->eng,
&stm->recorderObj,
&lDataSource,
&lDataSink,
lSoundRecorderIIDCount,
lSoundRecorderIIDs,
lSoundRecorderReqs);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to create recorder. Error code: %lu", res);
return CUBEB_ERROR;
}
}
// realize the audio recorder
res = (*stm->recorderObj)->Realize(stm->recorderObj, SL_BOOLEAN_FALSE);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to realize recorder. Error code: %lu", res);
return CUBEB_ERROR;
}
// get the record interface
res = (*stm->recorderObj)->GetInterface(stm->recorderObj,
stm->context->SL_IID_RECORD,
&stm->recorderItf);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to get recorder interface. Error code: %lu", res);
return CUBEB_ERROR;
}
res = (*stm->recorderItf)->RegisterCallback(stm->recorderItf, recorder_marker_callback, stm);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to register recorder marker callback. Error code: %lu", res);
return CUBEB_ERROR;
}
(*stm->recorderItf)->SetMarkerPosition(stm->recorderItf, (SLmillisecond)0);
res = (*stm->recorderItf)->SetCallbackEventsMask(stm->recorderItf, (SLuint32)SL_RECORDEVENT_HEADATMARKER);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to set headatmarker event mask. Error code: %lu", res);
return CUBEB_ERROR;
}
// get the simple android buffer queue interface
res = (*stm->recorderObj)->GetInterface(stm->recorderObj,
stm->context->SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
&stm->recorderBufferQueueItf);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to get recorder (android) buffer queue interface. Error code: %lu", res);
return CUBEB_ERROR;
}
// register callback on record (input) buffer queue
slAndroidSimpleBufferQueueCallback rec_callback = recorder_callback;
if (stm->output_enabled) {
// Register full duplex callback instead.
rec_callback = recorder_fullduplex_callback;
}
res = (*stm->recorderBufferQueueItf)->RegisterCallback(stm->recorderBufferQueueItf,
rec_callback,
stm);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to register recorder buffer queue callback. Error code: %lu", res);
return CUBEB_ERROR;
}
// Calculate length of input buffer according to requested latency
stm->input_frame_size = params->channels * sizeof(int16_t);
stm->input_buffer_length = (stm->input_frame_size * stm->latency_frames);
// Calculate the capacity of input array
stm->input_array_capacity = NBUFS;
if (stm->output_enabled) {
// Full duplex, update capacity to hold 1 sec of data
stm->input_array_capacity = 1 * stm->input_device_rate / stm->input_buffer_length;
}
// Allocate input array
stm->input_buffer_array = (void**)calloc(1, sizeof(void*)*stm->input_array_capacity);
// Buffering has not started yet.
stm->input_buffer_index = -1;
// Prepare input buffers
for(uint32_t i = 0; i < stm->input_array_capacity; ++i) {
stm->input_buffer_array[i] = calloc(1, stm->input_buffer_length);
}
// On full duplex allocate input queue and silent buffer
if (stm->output_enabled) {
stm->input_queue = array_queue_create(stm->input_array_capacity);
assert(stm->input_queue);
stm->input_silent_buffer = calloc(1, stm->input_buffer_length);
assert(stm->input_silent_buffer);
}
// Enqueue buffer to start rolling once recorder started
r = opensl_enqueue_recorder(stm, NULL);
if (r != CUBEB_OK) {
return r;
}
LOG("Cubeb stream init recorder success");
return CUBEB_OK;
}
static int
opensl_configure_playback(cubeb_stream * stm, cubeb_stream_params * params) {
assert(stm);
assert(params);
stm->inputrate = params->rate;
stm->framesize = params->channels * sizeof(int16_t);
stm->lastPosition = -1;
stm->lastPositionTimeStamp = 0;
stm->lastCompensativePosition = -1;
SLDataFormat_PCM format;
int r = opensl_set_format(&format, params);
if (r != CUBEB_OK) {
return CUBEB_ERROR_INVALID_FORMAT;
}
SLDataLocator_BufferQueue loc_bufq;
loc_bufq.locatorType = SL_DATALOCATOR_BUFFERQUEUE;
loc_bufq.numBuffers = NBUFS;
SLDataSource source;
source.pLocator = &loc_bufq;
source.pFormat = &format;
SLDataLocator_OutputMix loc_outmix;
loc_outmix.locatorType = SL_DATALOCATOR_OUTPUTMIX;
loc_outmix.outputMix = stm->context->outmixObj;
SLDataSink sink;
sink.pLocator = &loc_outmix;
sink.pFormat = NULL;
#if defined(__ANDROID__)
const SLInterfaceID ids[] = {stm->context->SL_IID_BUFFERQUEUE,
stm->context->SL_IID_VOLUME,
stm->context->SL_IID_ANDROIDCONFIGURATION};
const SLboolean req[] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE};
#else
const SLInterfaceID ids[] = {ctx->SL_IID_BUFFERQUEUE, ctx->SL_IID_VOLUME};
const SLboolean req[] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE};
#endif
assert(NELEMS(ids) == NELEMS(req));
unsigned int latency_frames = stm->latency_frames;
uint32_t preferred_sampling_rate = stm->inputrate;
#if defined(__ANDROID__)
if (get_android_version() >= ANDROID_VERSION_MARSHMALLOW) {
// Reset preferred samping rate to trigger fallback to native sampling rate.
preferred_sampling_rate = 0;
if (opensl_get_min_latency(stm->context, *params, &latency_frames) != CUBEB_OK) {
// Default to AudioFlinger's advertised fast track latency of 10ms.
latency_frames = 440;
}
stm->latency_frames = latency_frames;
}
#endif
SLresult res = SL_RESULT_CONTENT_UNSUPPORTED;
if (preferred_sampling_rate) {
res = (*stm->context->eng)->CreateAudioPlayer(stm->context->eng,
&stm->playerObj,
&source,
&sink,
NELEMS(ids),
ids,
req);
}
// Sample rate not supported? Try again with primary sample rate!
if (res == SL_RESULT_CONTENT_UNSUPPORTED) {
if (opensl_get_preferred_sample_rate(stm->context, &preferred_sampling_rate)) {
// If fail default is used
preferred_sampling_rate = DEFAULT_SAMPLE_RATE;
}
format.samplesPerSec = preferred_sampling_rate * 1000;
res = (*stm->context->eng)->CreateAudioPlayer(stm->context->eng,
&stm->playerObj,
&source,
&sink,
NELEMS(ids),
ids,
req);
}
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to create audio player. Error code: %lu", res);
return CUBEB_ERROR;
}
stm->output_configured_rate = preferred_sampling_rate;
stm->bytespersec = stm->output_configured_rate * stm->framesize;
stm->queuebuf_len = stm->framesize * latency_frames;
// Calculate the capacity of input array
stm->queuebuf_capacity = NBUFS;
if (stm->output_enabled) {
// Full duplex, update capacity to hold 1 sec of data
stm->queuebuf_capacity = 1 * stm->output_configured_rate / stm->queuebuf_len;
}
// Allocate input array
stm->queuebuf = (void**)calloc(1, sizeof(void*) * stm->queuebuf_capacity);
for (uint32_t i = 0; i < stm->queuebuf_capacity; ++i) {
stm->queuebuf[i] = calloc(1, stm->queuebuf_len);
assert(stm->queuebuf[i]);
}
res = (*stm->playerObj)->Realize(stm->playerObj, SL_BOOLEAN_FALSE);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to realize player object. Error code: %lu", res);
return CUBEB_ERROR;
}
res = (*stm->playerObj)->GetInterface(stm->playerObj,
stm->context->SL_IID_PLAY,
&stm->play);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to get play interface. Error code: %lu", res);
return CUBEB_ERROR;
}
res = (*stm->playerObj)->GetInterface(stm->playerObj,
stm->context->SL_IID_BUFFERQUEUE,
&stm->bufq);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to get bufferqueue interface. Error code: %lu", res);
return CUBEB_ERROR;
}
res = (*stm->playerObj)->GetInterface(stm->playerObj,
stm->context->SL_IID_VOLUME,
&stm->volume);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to get volume interface. Error code: %lu", res);
return CUBEB_ERROR;
}
res = (*stm->play)->RegisterCallback(stm->play, play_callback, stm);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to register play callback. Error code: %lu", res);
return CUBEB_ERROR;
}
// Work around wilhelm/AudioTrack badness, bug 1221228
(*stm->play)->SetMarkerPosition(stm->play, (SLmillisecond)0);
res = (*stm->play)->SetCallbackEventsMask(stm->play, (SLuint32)SL_PLAYEVENT_HEADATMARKER);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to set headatmarker event mask. Error code: %lu", res);
return CUBEB_ERROR;
}
slBufferQueueCallback player_callback = bufferqueue_callback;
if (stm->input_enabled) {
player_callback = player_fullduplex_callback;
}
res = (*stm->bufq)->RegisterCallback(stm->bufq, player_callback, stm);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to register bufferqueue callback. Error code: %lu", res);
return CUBEB_ERROR;
}
{
// Enqueue a silent frame so once the player becomes playing, the frame
// will be consumed and kick off the buffer queue callback.
// Note the duration of a single frame is less than 1ms. We don't bother
// adjusting the playback position.
uint8_t *buf = stm->queuebuf[stm->queuebuf_idx++];
memset(buf, 0, stm->framesize);
res = (*stm->bufq)->Enqueue(stm->bufq, buf, stm->framesize);
assert(res == SL_RESULT_SUCCESS);
}
LOG("Cubeb stream init playback success");
return CUBEB_OK;
}
static int
opensl_validate_stream_param(cubeb_stream_params * stream_params)
{
if ((stream_params &&
(stream_params->channels < 1 || stream_params->channels > 32))) {
return CUBEB_ERROR_INVALID_FORMAT;
}
return CUBEB_OK;
}
static int
opensl_stream_init(cubeb * ctx, 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)
{
cubeb_stream * stm;
assert(ctx);
if (input_device || output_device) {
LOG("Device selection is not supported in Android. The default will be used");
}
*stream = NULL;
int r = opensl_validate_stream_param(output_stream_params);
if(r != CUBEB_OK) {
LOG("Output stream params not valid");
return r;
}
r = opensl_validate_stream_param(input_stream_params);
if(r != CUBEB_OK) {
LOG("Input stream params not valid");
return r;
}
stm = calloc(1, sizeof(*stm));
assert(stm);
stm->context = ctx;
stm->data_callback = data_callback;
stm->state_callback = state_callback;
stm->user_ptr = user_ptr;
stm->latency_frames = latency_frames;
stm->input_enabled = (input_stream_params) ? 1 : 0;
stm->output_enabled = (output_stream_params) ? 1 : 0;
stm->shutdown = 1;
#ifdef DEBUG
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
r = pthread_mutex_init(&stm->mutex, &attr);
#else
r = pthread_mutex_init(&stm->mutex, NULL);
#endif
assert(r == 0);
if (output_stream_params) {
LOG("Playback params: Rate %d, channels %d, format %d, latency in frames %d.",
output_stream_params->rate, output_stream_params->channels,
output_stream_params->format, stm->latency_frames);
r = opensl_configure_playback(stm, output_stream_params);
if (r != CUBEB_OK) {
opensl_stream_destroy(stm);
return r;
}
}
if (input_stream_params) {
LOG("Capture params: Rate %d, channels %d, format %d, latency in frames %d.",
input_stream_params->rate, input_stream_params->channels,
input_stream_params->format, stm->latency_frames);
r = opensl_configure_capture(stm, input_stream_params);
if (r != CUBEB_OK) {
opensl_stream_destroy(stm);
return r;
}
}
/* Configure resampler*/
uint32_t target_sample_rate;
if (input_stream_params) {
target_sample_rate = input_stream_params->rate;
} else {
assert(output_stream_params);
target_sample_rate = output_stream_params->rate;
}
// Use the actual configured rates for input
// and output.
cubeb_stream_params input_params;
if (input_stream_params) {
input_params = *input_stream_params;
input_params.rate = stm->input_device_rate;
}
cubeb_stream_params output_params;
if (output_stream_params) {
output_params = *output_stream_params;
output_params.rate = stm->output_configured_rate;
}
stm->resampler = cubeb_resampler_create(stm,
input_stream_params ? &input_params : NULL,
output_stream_params ? &output_params : NULL,
target_sample_rate,
data_callback,
user_ptr,
CUBEB_RESAMPLER_QUALITY_DEFAULT);
if (!stm->resampler) {
LOG("Failed to create resampler");
opensl_stream_destroy(stm);
return CUBEB_ERROR;
}
*stream = stm;
LOG("Cubeb stream (%p) init success", stm);
return CUBEB_OK;
}
static int
opensl_start_player(cubeb_stream * stm)
{
assert(stm->playerObj);
SLuint32 playerState;
(*stm->playerObj)->GetState(stm->playerObj, &playerState);
if (playerState == SL_OBJECT_STATE_REALIZED) {
SLresult res = (*stm->play)->SetPlayState(stm->play, SL_PLAYSTATE_PLAYING);
if(res != SL_RESULT_SUCCESS) {
LOG("Failed to start player. Error code: %lu", res);
return CUBEB_ERROR;
}
}
return CUBEB_OK;
}
static int
opensl_start_recorder(cubeb_stream * stm)
{
assert(stm->recorderObj);
SLuint32 recorderState;
(*stm->recorderObj)->GetState(stm->recorderObj, &recorderState);
if (recorderState == SL_OBJECT_STATE_REALIZED) {
SLresult res = (*stm->recorderItf)->SetRecordState(stm->recorderItf, SL_RECORDSTATE_RECORDING);
if(res != SL_RESULT_SUCCESS) {
LOG("Failed to start recorder. Error code: %lu", res);
return CUBEB_ERROR;
}
}
return CUBEB_OK;
}
static int
opensl_stream_start(cubeb_stream * stm)
{
assert(stm);
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_shutdown(stm, 0);
opensl_set_draining(stm, 0);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (stm->playerObj) {
r = opensl_start_player(stm);
if (r != CUBEB_OK) {
return r;
}
}
if (stm->recorderObj) {
int r = opensl_start_recorder(stm);
if (r != CUBEB_OK) {
return r;
}
}
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_STARTED);
LOG("Cubeb stream (%p) started", stm);
return CUBEB_OK;
}
static int
opensl_stop_player(cubeb_stream * stm)
{
assert(stm->playerObj);
assert(stm->shutdown || stm->draining);
SLresult res = (*stm->play)->SetPlayState(stm->play, SL_PLAYSTATE_PAUSED);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to stop player. Error code: %lu", res);
return CUBEB_ERROR;
}
return CUBEB_OK;
}
static int
opensl_stop_recorder(cubeb_stream * stm)
{
assert(stm->recorderObj);
assert(stm->shutdown || stm->draining);
SLresult res = (*stm->recorderItf)->SetRecordState(stm->recorderItf, SL_RECORDSTATE_PAUSED);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to stop recorder. Error code: %lu", res);
return CUBEB_ERROR;
}
return CUBEB_OK;
}
static int
opensl_stream_stop(cubeb_stream * stm)
{
assert(stm);
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_shutdown(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (stm->playerObj) {
r = opensl_stop_player(stm);
if (r != CUBEB_OK) {
return r;
}
}
if (stm->recorderObj) {
int r = opensl_stop_recorder(stm);
if (r != CUBEB_OK) {
return r;
}
}
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_STOPPED);
LOG("Cubeb stream (%p) stopped", stm);
return CUBEB_OK;
}
static int
opensl_destroy_recorder(cubeb_stream * stm)
{
assert(stm);
assert(stm->recorderObj);
if (stm->recorderBufferQueueItf) {
SLresult res = (*stm->recorderBufferQueueItf)->Clear(stm->recorderBufferQueueItf);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to clear recorder buffer queue. Error code: %lu", res);
return CUBEB_ERROR;
}
stm->recorderBufferQueueItf = NULL;
for (uint32_t i = 0; i < stm->input_array_capacity; ++i) {
free(stm->input_buffer_array[i]);
}
}
(*stm->recorderObj)->Destroy(stm->recorderObj);
stm->recorderObj = NULL;
stm->recorderItf = NULL;
if (stm->input_queue) {
array_queue_destroy(stm->input_queue);
}
free(stm->input_silent_buffer);
return CUBEB_OK;
}
static void
opensl_stream_destroy(cubeb_stream * stm)
{
assert(stm->draining || stm->shutdown);
if (stm->playerObj) {
(*stm->playerObj)->Destroy(stm->playerObj);
stm->playerObj = NULL;
stm->play = NULL;
stm->bufq = NULL;
for (uint32_t i = 0; i < stm->queuebuf_capacity; ++i) {
free(stm->queuebuf[i]);
}
}
if (stm->recorderObj) {
int r = opensl_destroy_recorder(stm);
assert(r == CUBEB_OK);
}
if (stm->resampler) {
cubeb_resampler_destroy(stm->resampler);
}
pthread_mutex_destroy(&stm->mutex);
LOG("Cubeb stream (%p) destroyed", stm);
free(stm);
}
static int
opensl_stream_get_position(cubeb_stream * stm, uint64_t * position)
{
SLmillisecond msec;
uint64_t samplerate;
SLresult res;
int r;
uint32_t mixer_latency;
uint32_t compensation_msec = 0;
res = (*stm->play)->GetPosition(stm->play, &msec);
if (res != SL_RESULT_SUCCESS)
return CUBEB_ERROR;
struct timespec t;
clock_gettime(CLOCK_MONOTONIC, &t);
if(stm->lastPosition == msec) {
compensation_msec =
(t.tv_sec*1000000000LL + t.tv_nsec - stm->lastPositionTimeStamp) / 1000000;
} else {
stm->lastPositionTimeStamp = t.tv_sec*1000000000LL + t.tv_nsec;
stm->lastPosition = msec;
}
samplerate = stm->inputrate;
r = stm->context->get_output_latency(&mixer_latency, AUDIO_STREAM_TYPE_MUSIC);
if (r) {
return CUBEB_ERROR;
}
pthread_mutex_lock(&stm->mutex);
int64_t maximum_position = stm->written * (int64_t)stm->inputrate / stm->output_configured_rate;
pthread_mutex_unlock(&stm->mutex);
assert(maximum_position >= 0);
if (msec > mixer_latency) {
int64_t unadjusted_position;
if (stm->lastCompensativePosition > msec + compensation_msec) {
// Over compensation, use lastCompensativePosition.
unadjusted_position =
samplerate * (stm->lastCompensativePosition - mixer_latency) / 1000;
} else {
unadjusted_position =
samplerate * (msec - mixer_latency + compensation_msec) / 1000;
stm->lastCompensativePosition = msec + compensation_msec;
}
*position = unadjusted_position < maximum_position ?
unadjusted_position : maximum_position;
} else {
*position = 0;
}
return CUBEB_OK;
}
int
opensl_stream_get_latency(cubeb_stream * stm, uint32_t * latency)
{
int r;
uint32_t mixer_latency; // The latency returned by AudioFlinger is in ms.
/* audio_stream_type_t is an int, so this is okay. */
r = stm->context->get_output_latency(&mixer_latency, AUDIO_STREAM_TYPE_MUSIC);
if (r) {
return CUBEB_ERROR;
}
*latency = stm->latency_frames + // OpenSL latency
mixer_latency * stm->inputrate / 1000; // AudioFlinger latency
return CUBEB_OK;
}
int
opensl_stream_set_volume(cubeb_stream * stm, float volume)
{
SLresult res;
SLmillibel max_level, millibels;
float unclamped_millibels;
res = (*stm->volume)->GetMaxVolumeLevel(stm->volume, &max_level);
if (res != SL_RESULT_SUCCESS) {
return CUBEB_ERROR;
}
/* millibels are 100*dB, so the conversion from the volume's linear amplitude
* is 100 * 20 * log(volume). However we clamp the resulting value before
* passing it to lroundf() in order to prevent it from silently returning an
* erroneous value when the unclamped value exceeds the size of a long. */
unclamped_millibels = 100.0f * 20.0f * log10f(fmaxf(volume, 0.0f));
unclamped_millibels = fmaxf(unclamped_millibels, SL_MILLIBEL_MIN);
unclamped_millibels = fminf(unclamped_millibels, max_level);
millibels = lroundf(unclamped_millibels);
res = (*stm->volume)->SetVolumeLevel(stm->volume, millibels);
if (res != SL_RESULT_SUCCESS) {
return CUBEB_ERROR;
}
return CUBEB_OK;
}
static struct cubeb_ops const opensl_ops = {
.init = opensl_init,
.get_backend_id = opensl_get_backend_id,
.get_max_channel_count = opensl_get_max_channel_count,
.get_min_latency = opensl_get_min_latency,
.get_preferred_sample_rate = opensl_get_preferred_sample_rate,
.get_preferred_channel_layout = NULL,
.enumerate_devices = NULL,
.device_collection_destroy = NULL,
.destroy = opensl_destroy,
.stream_init = opensl_stream_init,
.stream_destroy = opensl_stream_destroy,
.stream_start = opensl_stream_start,
.stream_stop = opensl_stream_stop,
.stream_reset_default_device = NULL,
.stream_get_position = opensl_stream_get_position,
.stream_get_latency = opensl_stream_get_latency,
.stream_set_volume = opensl_stream_set_volume,
.stream_set_panning = NULL,
.stream_get_current_device = NULL,
.stream_device_destroy = NULL,
.stream_register_device_changed_callback = NULL,
.register_device_collection_changed = NULL
};
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