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Merge pull request #216 from DrChat/audio 

Cleanup some audio code
This commit is contained in:
Ben Vanik 2015-05-19 22:24:00 -07:00
parent f88bf33b4f f168fa881e
commit 9e685a1453
3 changed files with 94 additions and 80 deletions
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26
src/xenia/apu/audio_system.cc
View File

@ -291,16 +291,20 @@ void AudioSystem::WriteRegister(uint32_t addr, uint64_t value) {
uint32_t guest_ptr =
registers_.xma_context_array_ptr + context_id * kXmaContextSize;
auto context_ptr = memory()->TranslateVirtual(guest_ptr);
uint32_t dword0 = xe::load_and_swap<uint32_t>(context_ptr + 0);
bool has_valid_input = (dword0 & 0x00300000) != 0;
XMAContextData data(context_ptr);
bool has_valid_input = data.input_buffer_0_valid ||
data.input_buffer_1_valid;
if (has_valid_input) {
dword0 = dword0 & ~0x00300000;
xe::store_and_swap<uint32_t>(context_ptr + 0, dword0);
// Invalidate the buffers.
data.input_buffer_0_valid = 0;
data.input_buffer_1_valid = 0;
// Set output buffer to invalid.
uint32_t dword1 = xe::load_and_swap<uint32_t>(context_ptr + 4);
dword1 = dword1 & ~0x80000000;
xe::store_and_swap<uint32_t>(context_ptr + 4, dword1);
data.output_buffer_valid = false;
}
data.Store(context_ptr);
}
value >>= 1;
}
@ -323,6 +327,14 @@ void AudioSystem::WriteRegister(uint32_t addr, uint64_t value) {
uint32_t context_id = i + (r - 0x1A80) / 4 * 32;
XELOGAPU("AudioSystem: reset context %d", context_id);
// TODO(benvanik): something?
uint32_t guest_ptr =
registers_.xma_context_array_ptr + context_id * kXmaContextSize;
auto context_ptr = memory()->TranslateVirtual(guest_ptr);
XMAContextData data(context_ptr);
data.Store(context_ptr);
}
value >>= 1;
}

73
src/xenia/apu/audio_system.h
View File

@ -28,6 +28,79 @@ namespace apu {
class AudioDriver;
// This is stored in guest space in big-endian order.
// We load and swap the whole thing to splat here so that we can
// use bitfields.
struct XMAContextData {
static const uint32_t kSize = 64;
static const uint32_t kBytesPerBlock = 2048;
static const uint32_t kSamplesPerFrame = 512;
static const uint32_t kSamplesPerSubframe = 128;
// DWORD 0
uint32_t input_buffer_0_block_count : 12; // XMASetInputBuffer0, number of
// 2KB blocks.
uint32_t loop_count : 8; // +12bit, XMASetLoopData
uint32_t input_buffer_0_valid : 1; // +20bit, XMAIsInputBuffer0Valid
uint32_t input_buffer_1_valid : 1; // +21bit, XMAIsInputBuffer1Valid
uint32_t output_buffer_block_count : 5; // +22bit
uint32_t
output_buffer_write_offset : 5; // +27bit, XMAGetOutputBufferWriteOffset
// DWORD 1
uint32_t input_buffer_1_block_count : 12; // XMASetInputBuffer1, number of
// 2KB blocks.
uint32_t loop_subframe_end : 2; // +12bit, XMASetLoopData
uint32_t unk_dword_1_a : 3; // ?
uint32_t loop_subframe_skip : 3; // +17bit, XMASetLoopData
uint32_t subframe_decode_count : 4; // +20bit
uint32_t unk_dword_1_b : 3; // ?
uint32_t sample_rate : 2; // +27bit
uint32_t is_stereo : 1; // +29bit
uint32_t unk_dword_1_c : 1; // ?
uint32_t output_buffer_valid : 1; // +31bit, XMAIsOutputBufferValid
// DWORD 2
uint32_t input_buffer_read_offset : 30; // XMAGetInputBufferReadOffset
uint32_t unk_dword_2 : 2; // ?
// DWORD 3
uint32_t loop_start : 26; // XMASetLoopData
uint32_t unk_dword_3 : 6; // ?
// DWORD 4
uint32_t loop_end : 26; // XMASetLoopData
uint32_t packet_metadata : 5; // XMAGetPacketMetadata
uint32_t current_buffer : 1; // ?
// DWORD 5
uint32_t input_buffer_0_ptr; // physical address
// DWORD 6
uint32_t input_buffer_1_ptr; // physical address
// DWORD 7
uint32_t output_buffer_ptr; // physical address
// DWORD 8
uint32_t unk_dword_8; // Some kind of pointer like output_buffer_ptr
// DWORD 9
uint32_t
output_buffer_read_offset : 5; // +0bit, XMAGetOutputBufferReadOffset
uint32_t unk_dword_9 : 27;
XMAContextData(const void* ptr) {
xe::copy_and_swap_32_aligned(reinterpret_cast<uint32_t*>(this),
reinterpret_cast<const uint32_t*>(ptr),
sizeof(XMAContextData) / 4);
}
void Store(void* ptr) {
xe::copy_and_swap_32_aligned(reinterpret_cast<uint32_t*>(ptr),
reinterpret_cast<const uint32_t*>(this),
sizeof(XMAContextData) / 4);
}
};
static_assert(sizeof(XMAContextData) == 4 * 10, "Must be packed");
class AudioSystem {
public:
virtual ~AudioSystem();

75
src/xenia/kernel/xboxkrnl_audio_xma.cc
View File

@ -15,6 +15,8 @@
#include "xenia/kernel/xboxkrnl_private.h"
#include "xenia/xbox.h"
using namespace xe::apu;
namespace xe {
namespace kernel {
@ -78,79 +80,6 @@ SHIM_CALL XMAReleaseContext_shim(PPCContext* ppc_state, KernelState* state) {
SHIM_SET_RETURN_32(0);
}
// This is stored in guest space in big-endian order.
// We load and swap the whole thing to splat here so that we can
// use bitfields.
struct XMAContextData {
static const uint32_t kSize = 64;
static const uint32_t kBytesPerBlock = 2048;
static const uint32_t kSamplesPerFrame = 512;
static const uint32_t kSamplesPerSubframe = 128;
// DWORD 0
uint32_t input_buffer_0_block_count : 12; // XMASetInputBuffer0, number of
// 2KB blocks.
uint32_t loop_count : 8; // +12bit, XMASetLoopData
uint32_t input_buffer_0_valid : 1; // +20bit, XMAIsInputBuffer0Valid
uint32_t input_buffer_1_valid : 1; // +21bit, XMAIsInputBuffer1Valid
uint32_t output_buffer_block_count : 5; // +22bit
uint32_t
output_buffer_write_offset : 5; // +27bit, XMAGetOutputBufferWriteOffset
// DWORD 1
uint32_t input_buffer_1_block_count : 12; // XMASetInputBuffer1, number of
// 2KB blocks.
uint32_t loop_subframe_end : 2; // +12bit, XMASetLoopData
uint32_t unk_dword_1_a : 3; // ?
uint32_t loop_subframe_skip : 3; // +17bit, XMASetLoopData
uint32_t subframe_decode_count : 4; // +20bit
uint32_t unk_dword_1_b : 3; // ?
uint32_t sample_rate : 2; // +27bit
uint32_t is_stereo : 1; // +29bit
uint32_t unk_dword_1_c : 1; // ?
uint32_t output_buffer_valid : 1; // +31bit, XMAIsOutputBufferValid
// DWORD 2
uint32_t input_buffer_read_offset : 30; // XMAGetInputBufferReadOffset
uint32_t unk_dword_2 : 2; // ?
// DWORD 3
uint32_t loop_start : 26; // XMASetLoopData
uint32_t unk_dword_3 : 6; // ?
// DWORD 4
uint32_t loop_end : 26; // XMASetLoopData
uint32_t packet_metadata : 5; // XMAGetPacketMetadata
uint32_t current_buffer : 1; // ?
// DWORD 5
uint32_t input_buffer_0_ptr; // top bits lopped off?
// DWORD 6
uint32_t input_buffer_1_ptr; // top bits lopped off?
// DWORD 7
uint32_t output_buffer_ptr; // top bits lopped off?
// DWORD 8
uint32_t unk_dword_8; // Some kind of pointer like output_buffer_ptr
// DWORD 9
uint32_t
output_buffer_read_offset : 5; // +0bit, XMAGetOutputBufferReadOffset
uint32_t unk_dword_9 : 27;
XMAContextData(const void* ptr) {
xe::copy_and_swap_32_aligned(reinterpret_cast<uint32_t*>(this),
reinterpret_cast<const uint32_t*>(ptr),
sizeof(XMAContextData) / 4);
}
void Store(void* ptr) {
xe::copy_and_swap_32_aligned(reinterpret_cast<uint32_t*>(ptr),
reinterpret_cast<const uint32_t*>(this),
sizeof(XMAContextData) / 4);
}
};
static_assert(sizeof(XMAContextData) == 4 * 10, "Must be packed");
void StoreXmaContextIndexedRegister(KernelState* state, uint32_t base_reg,
uint32_t context_ptr) {
auto audio_system = state->emulator()->audio_system();