ppsspp/Core/HLE/sceAudio.h

// Copyright (c) 2012- PPSSPP Project.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.

#pragma once

#include <queue>

#include "CommonTypes.h"
#include "sceKernel.h"
#include "FixedSizeQueue.h"

enum  	PspAudioFormats { PSP_AUDIO_FORMAT_STEREO = 0, PSP_AUDIO_FORMAT_MONO = 0x10 };
enum  	PspAudioFrequencies { PSP_AUDIO_FREQ_44K = 44100, PSP_AUDIO_FREQ_48K = 48000 };

#define SCE_ERROR_AUDIO_CHANNEL_NOT_INIT                        0x80260001
#define SCE_ERROR_AUDIO_CHANNEL_BUSY                            0x80260002
#define SCE_ERROR_AUDIO_INVALID_CHANNEL                         0x80260003
#define SCE_ERROR_AUDIO_PRIV_REQUIRED                           0x80260004
#define SCE_ERROR_AUDIO_NO_CHANNELS_AVAILABLE                   0x80260005
#define SCE_ERROR_AUDIO_OUTPUT_SAMPLE_DATA_SIZE_NOT_ALIGNED     0x80260006
#define SCE_ERROR_AUDIO_INVALID_FORMAT                          0x80260007
#define SCE_ERROR_AUDIO_CHANNEL_NOT_RESERVED                    0x80260008
#define SCE_ERROR_AUDIO_NOT_OUTPUT                              0x80260009

#define PSP_AUDIO_CHANNEL_MAX 8

struct AudioChannel
{
	AudioChannel() {
		clear();
	}

	// PSP side

	bool reserved;

	// last sample address
	u32 sampleAddress;
	u32 sampleCount;  // Number of samples written in each OutputBlocking

	int leftVolume;
	int rightVolume;

	int format;

	SceUID waitingThread;

	// PC side - should probably split out

	// We copy samples as they are written into this simple ring buffer.
	// Might try something more efficient later.
	FixedSizeQueue<s16, 32768> sampleQueue;

	void DoState(PointerWrap &p) {
		p.Do(reserved);
		p.Do(sampleAddress);
		p.Do(sampleCount);
		p.Do(leftVolume);
		p.Do(rightVolume);
		p.Do(format);
		p.Do(waitingThread);
		sampleQueue.DoState(p);
		p.DoMarker("AudioChannel");
	}

	void clear() {
		reserved = false;
		waitingThread = 0;
		leftVolume = 0;
		rightVolume = 0;
		format = 0;
		sampleAddress = 0;
		sampleCount = 0;
		sampleQueue.clear();
	}
};

extern AudioChannel chans[8];

void Register_sceAudio();