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WIP Audio decoder

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Remove some old comments
This commit is contained in:
Dr. Chat
2015-05-22 21:39:26 -05:00
parent bd8db4810a
commit f31b34256b
7 changed files with 587 additions and 73 deletions
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82
src/xenia/apu/audio_system.h
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@@ -27,10 +27,16 @@ namespace xe {
namespace apu {
class AudioDriver;
class AudioDecoder;
// 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.
// This could be important:
// http://www.fmod.org/questions/question/forum-15859
// Appears to be dumped in order (for the most part)
// http://pastebin.com/9amqJ2kQ
struct XMAContextData {
static const uint32_t kSize = 64;
static const uint32_t kBytesPerBlock = 2048;
@@ -39,53 +45,54 @@ struct XMAContextData {
// DWORD 0
uint32_t input_buffer_0_block_count : 12; // XMASetInputBuffer0, number of
// 2KB blocks.
uint32_t loop_count : 8; // +12bit, XMASetLoopData
// 2KB blocks. AKA SizeRead0
// Maximum 4095 packets.
uint32_t loop_count : 8; // +12bit, XMASetLoopData NumLoops
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
uint32_t output_buffer_block_count : 5; // +22bit SizeWrite 256byte blocks
uint32_t output_buffer_write_offset : 5; // +27bit, XMAGetOutputBufferWriteOffset
// AKA OffsetWrite
// DWORD 1
// 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 unk_dword_1_a : 3; // ? might be loop_subframe_skip
uint32_t loop_subframe_skip : 3; // +17bit, XMASetLoopData might be subframe_decode_count
uint32_t subframe_decode_count : 4; // +20bit might be subframe_skip_count
uint32_t unk_dword_1_b : 3; // ? NumSubframesToSkip/NumChannels(?)
uint32_t sample_rate : 2; // +27bit multiplied by something?
uint32_t is_stereo : 1; // +29bit might be NumChannels
uint32_t unk_dword_1_c : 1; // ? NumChannels?
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 2
uint32_t input_buffer_read_offset : 30; // XMAGetInputBufferReadOffset
uint32_t unk_dword_2 : 2; // ErrorStatus/ErrorSet (?)
// DWORD 3
uint32_t loop_start : 26; // XMASetLoopData
uint32_t unk_dword_3 : 6; // ?
// DWORD 3
uint32_t loop_start : 26; // XMASetLoopData LoopStartOffset
uint32_t unk_dword_3 : 6; // ? ParserErrorStatus/ParserErrorSet(?)
// DWORD 4
uint32_t loop_end : 26; // XMASetLoopData
// DWORD 4
uint32_t loop_end : 26; // XMASetLoopData LoopEndOffset
uint32_t packet_metadata : 5; // XMAGetPacketMetadata
uint32_t current_buffer : 1; // ?
// DWORD 5
// DWORD 5
uint32_t input_buffer_0_ptr; // physical address
// DWORD 6
// DWORD 6
uint32_t input_buffer_1_ptr; // physical address
// DWORD 7
// 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 8
uint32_t overlap_add_ptr; // PtrOverlapAdd(?)
// DWORD 9
uint32_t
output_buffer_read_offset : 5; // +0bit, XMAGetOutputBufferReadOffset
uint32_t unk_dword_9 : 27;
// DWORD 9
// +0bit, XMAGetOutputBufferReadOffset AKA WriteBufferOffsetRead
uint32_t output_buffer_read_offset : 5;
uint32_t unk_dword_9 : 27; // StopWhenDone/InterruptWhenDone(?)
XMAContextData(const void* ptr) {
xe::copy_and_swap_32_aligned(reinterpret_cast<uint32_t*>(this),
@@ -135,6 +142,7 @@ class AudioSystem {
private:
void WorkerThreadMain();
void DecoderThreadMain();
static uint64_t MMIOReadRegisterThunk(AudioSystem* as, uint32_t addr) {
return as->ReadRegister(addr);
@@ -154,6 +162,10 @@ class AudioSystem {
std::atomic<bool> worker_running_;
kernel::XHostThread* worker_thread_;
std::atomic<bool> decoder_running_;
std::thread decoder_thread_;
xe::threading::Fence decoder_fence_;
std::mutex lock_;
// Stored little endian, accessed through 0x7FEA....
@@ -176,7 +188,17 @@ class AudioSystem {
} registers_;
uint32_t register_file_[0xFFFF / 4];
};
struct XMAContext {
uint32_t guest_ptr;
std::mutex lock;
bool in_use;
AudioDecoder* decoder;
};
XMAContext xma_context_array_[320];
std::vector<uint32_t> xma_context_free_list_;
std::vector<uint32_t> xma_context_used_list_; // XMA contexts in use
static const size_t maximum_client_count_ = 8;