usbloadergx/source/libwiigui/gui_sound.cpp
giantpune 9e79c9d99b * remove little unused code
* code cleanup
2010-09-18 23:16:05 +00:00

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/****************************************************************************
* libwiigui
*
* Tantric 2009
*
* gui_sound.cpp
*
* decoder modification by ardi 2009
*
* GUI class definitions
***************************************************************************/
#include "gui.h"
#include <unistd.h>
#include "gecko.h"
#include "gui_sound_decoder.h"
#define BUFFER_SIZE 8192
/***************************************************************
*
* D E C O D E R L I S T
*
*
***************************************************************/
GuiSoundDecoder::DecoderListEntry *GuiSoundDecoder::DecoderList = NULL;
GuiSoundDecoder::DecoderListEntry &GuiSoundDecoder::RegisterDecoder( DecoderListEntry &Decoder, GuiSoundDecoderCreate fnc )
{
if ( Decoder.fnc != fnc )
{
Decoder.fnc = fnc;
Decoder.next = DecoderList;
DecoderList = &Decoder;
}
return Decoder;
}
GuiSoundDecoder *GuiSoundDecoder::GetDecoder( const u8 * snd, u32 len, bool snd_is_allocated )
{
for ( DecoderListEntry *de = DecoderList; de; de = de->next )
{
GuiSoundDecoder *d = NULL;
try { d = de->fnc( snd, len, snd_is_allocated ); }
catch ( const char *error )
{
gprintf( "%s", error );
}
catch ( ... ) {}
if ( d ) return d;
}
return NULL;
}
/***************************************************************
*
* D E C O D E R T H R E A D
*
*
***************************************************************/
static GuiSound *GuiSoundPlayer[16] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};
static lwp_t GuiSoundDecoderThreadHandle = LWP_THREAD_NULL;
static bool GuiSoundDecoderThreadRunning = false;
static bool GuiSoundDecoderDataRquested = false;
void *GuiSoundDecoderThread( void *args )
{
GuiSoundDecoderThreadRunning = true;
do
{
if ( GuiSoundDecoderDataRquested )
{
GuiSoundDecoderDataRquested = false;
GuiSound **players = GuiSoundPlayer;
for ( int i = 0; i < 16; ++i , ++players )
{
GuiSound *player = *players;
if ( player )
player->DecoderCallback();
}
}
if ( !GuiSoundDecoderDataRquested )
usleep( 50 );
}
while ( GuiSoundDecoderThreadRunning );
return 0;
}
/***************************************************************
*
* A S N D C A L L B A C K
*
*
***************************************************************/
void GuiSoundPlayerCallback( s32 Voice )
{
if ( Voice >= 0 && Voice < 16 && GuiSoundPlayer[Voice] )
{
GuiSoundPlayer[Voice]->PlayerCallback();
GuiSoundDecoderDataRquested = true;
}
}
/***************************************************************
*
* R A W - D E C O D E R
* Decoder for Raw-PCM-Datas (16bit Stereo 48kHz)
*
***************************************************************/
class GuiSoundDecoderRAW : public GuiSoundDecoder
{
protected:
GuiSoundDecoderRAW( const u8 * snd, u32 len, bool snd_is_allocated )
{
pcm_start = snd;
is_allocated = snd_is_allocated;
pcm_end = pcm_start + len;
pos = pcm_start;
is_running = false;
}
public:
~GuiSoundDecoderRAW()
{
while ( is_running ) usleep( 50 );
if ( is_allocated ) delete [] pcm_start;
}
static GuiSoundDecoder *Create( const u8 * snd, u32 len, bool snd_is_allocated )
{
try { return new GuiSoundDecoderRAW( snd, len, snd_is_allocated ); }
catch ( ... ) {}
return NULL;
}
s32 GetFormat()
{
return VOICE_STEREO_16BIT;
}
s32 GetSampleRate()
{
return 48000;
}
/* Read reads data from stream to buffer
return: >0 = readed bytes;
0 = EOF;
<0 = Error;
*/
int Read( u8 * buffer, int buffer_size )
{
if ( pos >= pcm_end )
return 0; // EOF
is_running = true;
if ( pos + buffer_size > pcm_end )
buffer_size = pcm_end - pos;
memcpy( buffer, pos, buffer_size );
pos += buffer_size;
is_running = false;
return buffer_size;
}
int Rewind()
{
pos = pcm_start;
return 0;
}
private:
const u8 *pcm_start;
const u8 *pcm_end;
bool is_allocated;
const u8 *pos;
bool is_running;
};
/***************************************************************
*
* G u i S o u n d
*
*
***************************************************************/
#define GuiSoundBufferReady 0x01
#define GuiSoundBufferEOF 0x02
#define GuiSoundFinish 0x04
static int GuiSoundCount = 0;
/**
* Constructor for the GuiSound class.
*/
GuiSound::GuiSound( const u8 *s, int l, int v/*=100*/, bool r/*=true*/, bool a/*=false*/ )
{
if ( GuiSoundCount++ == 0 || GuiSoundDecoderThreadHandle == LWP_THREAD_NULL )
{
LWP_CreateThread( &GuiSoundDecoderThreadHandle, GuiSoundDecoderThread, NULL, NULL, 32768, 80 );
}
voice = -1;
play_buffer[0] = ( u8* )memalign( 32, BUFFER_SIZE * 3 ); // tripple-buffer first is played
play_buffer[1] = play_buffer[0] + BUFFER_SIZE; // second is waiting
play_buffer[2] = play_buffer[1] + BUFFER_SIZE; // third is decoding
buffer_nr = 0; // current playbuffer
buffer_pos = 0; // current idx to write in buffer
buffer_ready = false;
buffer_eof = false;
loop = false; // play looped
volume = v; // volume
decoder = NULL;
if ( play_buffer[0] ) // playbuffer ok
Load( s, l, r, a );
}
bool GuiSound::Load( const u8 *s, int l, bool r/*=false*/, bool a/*=false*/ )
{
Stop();
if ( !play_buffer[0] ) return false;
GuiSoundDecoder *newDecoder = GuiSoundDecoder::GetDecoder( s, l, a );
if ( !newDecoder && r ) newDecoder = GuiSoundDecoderRAW::Create( s, l, a );
if ( newDecoder )
{
delete decoder;
decoder = newDecoder;
return true;
}
else if ( a )
delete [] s;
return false;
}
GuiSound::GuiSound( const char *p, int v/*=100*/ )
{
if ( GuiSoundCount++ == 0 || GuiSoundDecoderThreadHandle == LWP_THREAD_NULL )
{
LWP_CreateThread( &GuiSoundDecoderThreadHandle, GuiSoundDecoderThread, NULL, NULL, 32*1024, 80 );
}
voice = -1;
play_buffer[0] = ( u8* )memalign( 32, BUFFER_SIZE * 3 ); // tripple-buffer first is played
play_buffer[1] = play_buffer[0] + BUFFER_SIZE; // second is waiting
play_buffer[2] = play_buffer[1] + BUFFER_SIZE; // third is decoding
buffer_nr = 0; // current playbuffer
buffer_pos = 0; // current idx to write in buffer
buffer_ready = false;
buffer_eof = false;
loop = false; // play looped
volume = v; // volume
decoder = NULL;
if ( play_buffer[0] ) // playbuffer ok
Load( p );
}
bool GuiSound::Load( const char *p )
{
Stop(); // stop playing
if ( !play_buffer[0] ) return false;
bool ret = false;
voice = -2; // -2 marks loading from file
u32 filesize = 0;
u8 *buffer = NULL;
size_t result;
FILE * pFile = fopen ( p, "rb" );
if ( pFile )
{
// get file size:
fseek ( pFile , 0 , SEEK_END );
filesize = ftell ( pFile );
fseek ( pFile , 0 , SEEK_SET );
// allocate memory to contain the whole file:
buffer = new( std::nothrow ) u8[filesize];
if ( buffer )
{
// copy the file into the buffer:
result = fread ( buffer, 1, filesize, pFile );
if ( result == filesize )
ret = Load( buffer, filesize, false, true );
else
delete [] buffer;
}
fclose ( pFile );
}
return ret;
}
/**
* Destructor for the GuiSound class.
*/
GuiSound::~GuiSound()
{
if ( !loop ) while ( voice >= 0 ) usleep( 50 );
Stop();
if ( --GuiSoundCount == 0 && GuiSoundDecoderThreadHandle != LWP_THREAD_NULL )
{
GuiSoundDecoderThreadRunning = false;
LWP_JoinThread( GuiSoundDecoderThreadHandle, NULL );
GuiSoundDecoderThreadHandle = LWP_THREAD_NULL;
}
delete decoder;
free( play_buffer[0] );
}
void GuiSound::Play()
{
Stop(); // stop playing if it played
if ( !play_buffer[0] ) return;
if ( !decoder ) return; // no decoder or no play_buffer -> no playing
// initialize the buffer
buffer_nr = 0; // allways starts with buffer 0
buffer_pos = 0; // reset position
buffer_ready = false;
buffer_eof = false;
decoder->Rewind(); // play from begin
DecoderCallback(); // fill first buffer;
if ( !buffer_ready || buffer_eof ) // if first buffer not ready -> no play
return;
voice = ASND_GetFirstUnusedVoice();
if ( voice >= 0 )
{
s32 vol = ( 255 * volume ) / 100;
s32 format = decoder->GetFormat();
s32 samplerate = decoder->GetSampleRate();
s32 first_pos = buffer_pos;
// switch to next buffer
buffer_nr = 1;
buffer_pos = 0;
buffer_ready = false;
buffer_eof = false;
DecoderCallback(); // fill second buffer;
GuiSoundPlayer[voice] = this; // activate Callbacks for this voice
// Play the voice
ASND_SetVoice( voice, format, samplerate, 0, play_buffer[0], first_pos, vol, vol, GuiSoundPlayerCallback );
}
}
/*
int GuiSound::PlayOggFile(char * path)
{
if(Load(path))
Play();
return 1;
}
*/
void GuiSound::Stop()
{
if ( voice < 0 ) return ;
GuiSoundPlayer[voice] = NULL; // disable Callbacks
SND_StopVoice( voice );
voice = -1;
}
void GuiSound::Pause()
{
if ( voice < 0 ) return ;
ASND_PauseVoice( voice, 1 );
}
void GuiSound::Resume()
{
if ( voice < 0 ) return ;
ASND_PauseVoice( voice, 0 );
}
bool GuiSound::IsPlaying()
{
return voice >= 0;
}
void GuiSound::SetVolume( int vol )
{
volume = vol;
if ( voice < 0 ) return ;
int newvol = 255 * ( volume / 100.0 );
ASND_ChangeVolumeVoice( voice, newvol, newvol );
}
void GuiSound::SetLoop( bool l )
{
loop = l;
}
void GuiSound::DecoderCallback()
{
if ( buffer_ready || buffer_eof ) // if buffer ready or EOF -> nothing
return;
bool error = false;
while ( buffer_pos < BUFFER_SIZE )
{
int ret = decoder->Read( &play_buffer[buffer_nr][buffer_pos], BUFFER_SIZE - buffer_pos );
if ( ret > 0 )
buffer_pos += ret; // ok -> fill the buffer more
else if ( ret == 0 ) // EOF from decoder
{
if ( loop )
decoder->Rewind(); // if loop -> rewind and fill the buffer more
else if ( buffer_pos )
break; // has data in buffer -> play the buffer
else
buffer_eof = true; // no data in buffer -> return EOF
return;
}
else if ( ret < 0 ) // an ERROR
{
if ( buffer_pos )
break; // has data in buffer -> play the buffer
else if ( loop )
{
if ( !error ) // if no prev error
{
decoder->Rewind(); // if loop -> rewind
error = true; // set error-state
continue; // and fill the buffer more
}
buffer_eof = true; // has prev error -> error in first block -> return EOF
return;
}
else
{
buffer_eof = true; // no loop -> return EOF
return;
}
}
error = false; // clear error-state
}
buffer_ready = true;
}
void GuiSound::PlayerCallback()
{
if ( buffer_eof ) // if EOF
{
if ( ASND_TestPointer( voice, play_buffer[( buffer_nr+2 )%3] ) == 0 ) // test prev. Buffer
Stop();
}
else if ( buffer_ready ) // if buffer ready
{
if ( ASND_AddVoice( voice, play_buffer[buffer_nr], buffer_pos ) == SND_OK ) // add buffer
{
// next buffer
buffer_nr = ( buffer_nr + 1 ) % 3;
buffer_pos = 0;
buffer_ready = false;
buffer_eof = false;
}
}
}