// 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/.

#include "Common/ChunkFile.h"
#include "Core/Reporting.h"
#include "Core/HLE/HLE.h"
#include "Core/HLE/FunctionWrappers.h"
#include "Core/HLE/sceVaudio.h"
#include "Core/HLE/sceAudio.h"
#include "Core/HLE/__sceAudio.h"

// Ultra hacky Vaudio implementation. Not sure what the point of this API is.

bool vaudioReserved = false;

void __VaudioInit() {
	vaudioReserved = false;
}

void __VaudioDoState(PointerWrap &p) {
	auto s = p.Section("sceVaudio", 1);
	if (!s)
		return;

	p.Do(vaudioReserved);
}

u32 sceVaudioChReserve(int sampleCount, int freq, int format) {
	if (vaudioReserved) {
		ERROR_LOG(SCEAUDIO, "sceVaudioChReserve(%i, %i, %i) - already reserved", sampleCount, freq, format);
		return SCE_KERNEL_ERROR_BUSY;
	}
	// We still have to check the channel also, which gives a different error.
	if (chans[PSP_AUDIO_CHANNEL_VAUDIO].reserved) {
		ERROR_LOG(SCEAUDIO, "sceVaudioChReserve(%i, %i, %i) - channel already reserved", sampleCount, freq, format);
		return SCE_ERROR_AUDIO_CHANNEL_ALREADY_RESERVED;
	}
	DEBUG_LOG(SCEAUDIO, "sceVaudioChReserve(%i, %i, %i)", sampleCount, freq, format);
	chans[PSP_AUDIO_CHANNEL_VAUDIO].reserved = true;
	chans[PSP_AUDIO_CHANNEL_VAUDIO].sampleCount = sampleCount;
	chans[PSP_AUDIO_CHANNEL_VAUDIO].format = format == 2 ? PSP_AUDIO_FORMAT_STEREO : PSP_AUDIO_FORMAT_MONO;
	chans[PSP_AUDIO_CHANNEL_VAUDIO].leftVolume = 0;
	chans[PSP_AUDIO_CHANNEL_VAUDIO].rightVolume = 0;
	vaudioReserved = true;
	__AudioSetOutputFrequency(freq);
	return 0;
}

u32 sceVaudioChRelease() {
	DEBUG_LOG(SCEAUDIO, "sceVaudioChRelease(...)");
	if (!chans[PSP_AUDIO_CHANNEL_VAUDIO].reserved) {
		return SCE_ERROR_AUDIO_CHANNEL_NOT_RESERVED;
	} else {
		chans[PSP_AUDIO_CHANNEL_VAUDIO].reset();
		chans[PSP_AUDIO_CHANNEL_VAUDIO].reserved = false;
		vaudioReserved = false;
		return 0;
	}
}

u32 sceVaudioOutputBlocking(int vol, u32 buffer) {
	DEBUG_LOG(SCEAUDIO, "sceVaudioOutputBlocking(%i, %08x)", vol, buffer);
	chans[PSP_AUDIO_CHANNEL_OUTPUT2].leftVolume = vol;
	chans[PSP_AUDIO_CHANNEL_OUTPUT2].rightVolume = vol;
	// TODO: This may be wrong, not sure if's in a different format?
	chans[PSP_AUDIO_CHANNEL_OUTPUT2].sampleAddress = buffer;
	return __AudioEnqueue(chans[PSP_AUDIO_CHANNEL_VAUDIO], PSP_AUDIO_CHANNEL_VAUDIO, true);
}

u32 sceVaudioSetEffectType(int effectType, int vol) {
	ERROR_LOG_REPORT(SCEAUDIO, "UNIMPL sceVaudioSetEffectType(%i, %i)", effectType, vol);
	return 0;
}

u32 sceVaudioSetAlcMode(int alcMode) {
	ERROR_LOG_REPORT(SCEAUDIO, "UNIMPL sceVaudioSetAlcMode(%i)", alcMode);
	return 0;
}

const HLEFunction sceVaudio[] = {
	{0x8986295e, WrapU_IU<sceVaudioOutputBlocking>, "sceVaudioOutputBlocking"},
	{0x03b6807d, WrapU_III<sceVaudioChReserve>, "sceVaudioChReserve"},
	{0x67585dfd, WrapU_V<sceVaudioChRelease>, "sceVaudioChRelease"},
	{0x346FBE94, WrapU_II<sceVaudioSetEffectType>, "sceVaudioSetEffectType"},
	{0xCBD4AC51, WrapU_I<sceVaudioSetAlcMode>, "sceVaudioSetAlcMode"},
	{0x504e4745, 0, "sceVaudio_504E4745"},
	{0x27acc20b, 0, "sceVaudioChReserveBuffering"},
	{0xe8e78dc8, 0, "sceVaudio_E8E78DC8"},
};

void Register_sceVaudio() {
	RegisterModule("sceVaudio",ARRAY_SIZE(sceVaudio), sceVaudio );
}