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GX2_GUI_Template/src/sounds/SoundHandler.cpp

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/***************************************************************************
* Copyright (C) 2010
* by Dimok
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any
* purpose, including commercial applications, and to alter it and
* redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you
* must not claim that you wrote the original software. If you use
* this software in a product, an acknowledgment in the product
* documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and
* must not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
* for WiiXplorer 2010
***************************************************************************/
#include <unistd.h>
#include <malloc.h>
#include "common/common.h"
#include "fs/CFile.hpp"
#include "SoundHandler.hpp"
#include "WavDecoder.hpp"
#include "Mp3Decoder.hpp"
#include "OggDecoder.hpp"
SoundHandler * SoundHandler::handlerInstance = NULL;
SoundHandler::SoundHandler()
: CThread(CThread::eAttributeAffCore1 | CThread::eAttributePinnedAff, 0, 0x8000)
{
Decoding = false;
ExitRequested = false;
for(u32 i = 0; i < MAX_DECODERS; ++i)
{
DecoderList[i] = NULL;
voiceList[i] = NULL;
}
resumeThread();
//! wait for initialization
while(!isThreadSuspended())
usleep(1000);
}
SoundHandler::~SoundHandler()
{
ExitRequested = true;
ThreadSignal();
ClearDecoderList();
}
void SoundHandler::AddDecoder(int voice, const char * filepath)
{
if(voice < 0 || voice >= MAX_DECODERS)
return;
if(DecoderList[voice] != NULL)
RemoveDecoder(voice);
DecoderList[voice] = GetSoundDecoder(filepath);
}
void SoundHandler::AddDecoder(int voice, const u8 * snd, int len)
{
if(voice < 0 || voice >= MAX_DECODERS)
return;
if(DecoderList[voice] != NULL)
RemoveDecoder(voice);
DecoderList[voice] = GetSoundDecoder(snd, len);
}
void SoundHandler::RemoveDecoder(int voice)
{
if(voice < 0 || voice >= MAX_DECODERS)
return;
if(DecoderList[voice] != NULL)
{
if(voiceList[voice] && voiceList[voice]->getState() != Voice::STATE_STOPPED)
{
if(voiceList[voice]->getState() != Voice::STATE_STOP)
voiceList[voice]->setState(Voice::STATE_STOP);
// it shouldn't take longer than 3 ms actually but we wait up to 20
// on application quit the AX frame callback is not called anymore
// therefore this would end in endless loop if no timeout is defined
int timeOut = 20;
while(--timeOut && (voiceList[voice]->getState() != Voice::STATE_STOPPED))
usleep(1000);
}
SoundDecoder *decoder = DecoderList[voice];
decoder->Lock();
DecoderList[voice] = NULL;
decoder->Unlock();
delete decoder;
}
}
void SoundHandler::ClearDecoderList()
{
for(u32 i = 0; i < MAX_DECODERS; ++i)
RemoveDecoder(i);
}
static inline bool CheckMP3Signature(const u8 * buffer)
{
const char MP3_Magic[][3] =
{
{'I', 'D', '3'}, //'ID3'
{0xff, 0xfe}, //'MPEG ADTS, layer III, v1.0 [protected]', 'mp3', 'audio/mpeg'),
{0xff, 0xff}, //'MPEG ADTS, layer III, v1.0', 'mp3', 'audio/mpeg'),
{0xff, 0xfa}, //'MPEG ADTS, layer III, v1.0 [protected]', 'mp3', 'audio/mpeg'),
{0xff, 0xfb}, //'MPEG ADTS, layer III, v1.0', 'mp3', 'audio/mpeg'),
{0xff, 0xf2}, //'MPEG ADTS, layer III, v2.0 [protected]', 'mp3', 'audio/mpeg'),
{0xff, 0xf3}, //'MPEG ADTS, layer III, v2.0', 'mp3', 'audio/mpeg'),
{0xff, 0xf4}, //'MPEG ADTS, layer III, v2.0 [protected]', 'mp3', 'audio/mpeg'),
{0xff, 0xf5}, //'MPEG ADTS, layer III, v2.0', 'mp3', 'audio/mpeg'),
{0xff, 0xf6}, //'MPEG ADTS, layer III, v2.0 [protected]', 'mp3', 'audio/mpeg'),
{0xff, 0xf7}, //'MPEG ADTS, layer III, v2.0', 'mp3', 'audio/mpeg'),
{0xff, 0xe2}, //'MPEG ADTS, layer III, v2.5 [protected]', 'mp3', 'audio/mpeg'),
{0xff, 0xe3}, //'MPEG ADTS, layer III, v2.5', 'mp3', 'audio/mpeg'),
};
if(buffer[0] == MP3_Magic[0][0] && buffer[1] == MP3_Magic[0][1] &&
buffer[2] == MP3_Magic[0][2])
{
return true;
}
for(int i = 1; i < 13; i++)
{
if(buffer[0] == MP3_Magic[i][0] && buffer[1] == MP3_Magic[i][1])
return true;
}
return false;
}
SoundDecoder * SoundHandler::GetSoundDecoder(const char * filepath)
{
u32 magic;
CFile f(filepath, CFile::ReadOnly);
if(f.size() == 0)
return NULL;
do
{
f.read((u8 *) &magic, 1);
}
while(((u8 *) &magic)[0] == 0 && f.tell() < f.size());
if(f.tell() == f.size())
return NULL;
f.seek(f.tell()-1, SEEK_SET);
f.read((u8 *) &magic, 4);
f.close();
if(magic == 0x4f676753) // 'OggS'
{
return new OggDecoder(filepath);
}
else if(magic == 0x52494646) // 'RIFF'
{
return new WavDecoder(filepath);
}
else if(CheckMP3Signature((u8 *) &magic) == true)
{
return new Mp3Decoder(filepath);
}
return new SoundDecoder(filepath);
}
SoundDecoder * SoundHandler::GetSoundDecoder(const u8 * sound, int length)
{
const u8 * check = sound;
int counter = 0;
while(check[0] == 0 && counter < length)
{
check++;
counter++;
}
if(counter >= length)
return NULL;
u32 * magic = (u32 *) check;
if(magic[0] == 0x4f676753) // 'OggS'
{
return new OggDecoder(sound, length);
}
else if(magic[0] == 0x52494646) // 'RIFF'
{
return new WavDecoder(sound, length);
}
else if(CheckMP3Signature(check) == true)
{
return new Mp3Decoder(sound, length);
}
return new SoundDecoder(sound, length);
}
void SoundHandler::executeThread()
{
//! initialize 48 kHz renderer
AXInitParams params;
memset(&params, 0, sizeof(params));
params.renderer = AX_INIT_RENDERER_48KHZ;
// TODO: handle support for 3.1.0 with dynamic libs instead of static linking it
//if(AXInitWithParams != 0)
AXInitWithParams(&params);
//else
// AXInit();
// The problem with last voice on 500 was caused by it having priority 0
// We would need to change this priority distribution if for some reason
// we would need MAX_DECODERS > Voice::PRIO_MAX
for(u32 i = 0; i < MAX_DECODERS; ++i)
{
int priority = (MAX_DECODERS - i) * Voice::PRIO_MAX / MAX_DECODERS;
voiceList[i] = new Voice(priority); // allocate voice 0 with highest priority
}
AXRegisterAppFrameCallback(SoundHandler::axFrameCallback);
u16 i = 0;
while (!ExitRequested)
{
suspendThread();
for(i = 0; i < MAX_DECODERS; ++i)
{
if(DecoderList[i] == NULL)
continue;
Decoding = true;
if(DecoderList[i])
DecoderList[i]->Lock();
if(DecoderList[i])
DecoderList[i]->Decode();
if(DecoderList[i])
DecoderList[i]->Unlock();
}
Decoding = false;
}
for(u32 i = 0; i < MAX_DECODERS; ++i)
voiceList[i]->stop();
AXRegisterAppFrameCallback(NULL);
AXQuit();
for(u32 i = 0; i < MAX_DECODERS; ++i)
{
delete voiceList[i];
voiceList[i] = NULL;
}
}
void SoundHandler::axFrameCallback(void)
{
for (u32 i = 0; i < MAX_DECODERS; i++)
{
Voice *voice = handlerInstance->getVoice(i);
switch (voice->getState())
{
default:
case Voice::STATE_STOPPED:
break;
case Voice::STATE_START: {
SoundDecoder * decoder = handlerInstance->getDecoder(i);
decoder->Lock();
if(decoder->IsBufferReady())
{
const u8 *buffer = decoder->GetBuffer();
const u32 bufferSize = decoder->GetBufferSize();
decoder->LoadNext();
const u8 *nextBuffer = NULL;
u32 nextBufferSize = 0;
if(decoder->IsBufferReady())
{
nextBuffer = decoder->GetBuffer();
nextBufferSize = decoder->GetBufferSize();
decoder->LoadNext();
}
voice->play(buffer, bufferSize, nextBuffer, nextBufferSize, decoder->GetFormat() & 0xff, decoder->GetSampleRate());
handlerInstance->ThreadSignal();
voice->setState(Voice::STATE_PLAYING);
}
decoder->Unlock();
break;
}
case Voice::STATE_PLAYING:
if(voice->getInternState() == 1)
{
if(voice->isBufferSwitched())
{
SoundDecoder * decoder = handlerInstance->getDecoder(i);
decoder->Lock();
if(decoder->IsBufferReady())
{
voice->setNextBuffer(decoder->GetBuffer(), decoder->GetBufferSize());
decoder->LoadNext();
handlerInstance->ThreadSignal();
}
else if(decoder->IsEOF())
{
voice->setState(Voice::STATE_STOP);
}
decoder->Unlock();
}
}
else
{
voice->setState(Voice::STATE_STOPPED);
}
break;
case Voice::STATE_STOP:
if(voice->getInternState() != 0)
voice->stop();
voice->setState(Voice::STATE_STOPPED);
break;
}
}
}
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