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CDROM: Implement XA-ADPCM decoding

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This commit is contained in:
Connor McLaughlin
2019-10-15 17:27:35 +10:00
parent 7195766563
commit aa792da823
6 changed files with 257 additions and 35 deletions
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12
src/core/spu.h
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@ -1,5 +1,6 @@
#pragma once
#include "common/bitfield.h"
#include "common/fifo_queue.h"
#include "types.h"
#include <array>
@ -36,6 +37,14 @@ public:
// Manipulating debug options.
void DrawDebugMenu();
// External input from CD controller.
void AddCDAudioSample(s16 left, s16 right)
{
m_cd_audio_buffer.Push(left);
m_cd_audio_buffer.Push(right);
}
void EnsureCDAudioSpace(u32 num_samples);
private:
static constexpr u32 RAM_SIZE = 512 * 1024;
static constexpr u32 RAM_MASK = RAM_SIZE - 1;
@ -48,6 +57,7 @@ private:
static constexpr u32 SYSCLK_TICKS_PER_SPU_TICK = MASTER_CLOCK / SAMPLE_RATE; // 0x300
static constexpr s16 ADSR_MIN_VOLUME = 0;
static constexpr s16 ADSR_MAX_VOLUME = 0x7FFF;
static constexpr u32 CD_AUDIO_SAMPLE_BUFFER_SIZE = 44100 * 2;
enum class RAMTransferMode : u8
{
@ -280,4 +290,6 @@ private:
std::array<Voice, NUM_VOICES> m_voices{};
std::array<u8, RAM_SIZE> m_ram{};
InlineFIFOQueue<s16, CD_AUDIO_SAMPLE_BUFFER_SIZE> m_cd_audio_buffer;
};