void al_mus_update( void )
{
int processed;
ALint state;
if ( !mus_playing )
{
return;
}
qalGetSourcei( source, AL_BUFFERS_PROCESSED, &processed );
if ( processed )
{
while ( processed-- )
{
ALuint b;
qalSourceUnqueueBuffers( source, 1, &b );
al_mus_process( b );
qalSourceQueueBuffers( source, 1, &b );
}
}
// If it's not still playing, give it a kick
qalGetSourcei( source, AL_SOURCE_STATE, &state );
if ( state == AL_STOPPED )
{
si.Printf( PRINT_ALL, "Musical kick\n" );
qalSourcePlay( source );
}
// Set the gain property
qalSourcef( source, AL_GAIN, s_gain->value * s_musicVolume->value );
}
/*
=================
S_AL_MusicUpdate
=================
*/
static
void S_AL_MusicUpdate( void )
{
int numBuffers;
ALint state;
if(!musicPlaying)
return;
qalGetSourcei( musicSource, AL_BUFFERS_PROCESSED, &numBuffers );
while( numBuffers-- )
{
ALuint b;
qalSourceUnqueueBuffers(musicSource, 1, &b);
S_AL_MusicProcess(b);
qalSourceQueueBuffers(musicSource, 1, &b);
}
// Hitches can cause OpenAL to be starved of buffers when streaming.
// If this happens, it will stop playback. This restarts the source if
// it is no longer playing, and if there are buffers available
qalGetSourcei( musicSource, AL_SOURCE_STATE, &state );
qalGetSourcei( musicSource, AL_BUFFERS_QUEUED, &numBuffers );
if( state == AL_STOPPED && numBuffers )
{
Com_DPrintf( S_COLOR_YELLOW "Restarted OpenAL music\n" );
qalSourcePlay(musicSource);
}
// Set the gain property
qalSourcef(musicSource, AL_GAIN, s_alGain->value * s_musicVolume->value);
}
/*
=================
S_AL_RawSamples
=================
*/
static
void S_AL_RawSamples(int samples, int rate, int width, int channels, const byte *data, float volume)
{
ALuint buffer;
ALuint format;
format = S_AL_Format( width, channels );
// Create the streamSource if necessary
if(streamSourceHandle == -1)
{
S_AL_AllocateStreamChannel();
// Failed?
if(streamSourceHandle == -1)
{
Com_Printf( S_COLOR_RED "ERROR: Can't allocate streaming streamSource\n");
return;
}
}
// Create a buffer, and stuff the data into it
qalGenBuffers(1, &buffer);
qalBufferData(buffer, format, (ALvoid *)data, (samples * width * channels), rate);
// Shove the data onto the streamSource
qalSourceQueueBuffers(streamSource, 1, &buffer);
// Volume
qalSourcef (streamSource, AL_GAIN, volume * s_volume->value * s_alGain->value);
}
/**
* Background music playback
*/
void SndAl_StartBackgroundTrack( const char *intro, const char *loop )
{
int i;
// Stop any existing music that might be playing
SndAl_StopBackgroundTrack();
if ( !intro || !intro[ 0 ] )
{
intro = loop;
}
if ( !loop || !loop[ 0 ] )
{
loop = intro;
}
if ( ( !intro || !intro[ 0 ] ) && ( !intro || !intro[ 0 ] ) )
{
return;
}
// Copy the loop over
strncpy( s_backgroundLoop, loop, sizeof( s_backgroundLoop ) );
// Open the intro
mus_stream = si.StreamOpen( intro );
if ( !mus_stream )
{
return;
}
// Allocate a source
al_mus_source_get();
if ( source_handle == -1 )
{
return;
}
// Generate the buffers
qalGenBuffers( BUFFERS, buffers );
// Queue the buffers up
for ( i = 0; i < BUFFERS; i++ )
{
al_mus_process( buffers[ i ] );
}
qalSourceQueueBuffers( source, BUFFERS, buffers );
// Start playing
qalSourcePlay( source );
mus_playing = qtrue;
}
/*
=================
S_StreamRawSamples
Cinematic streaming
=================
*/
void S_StreamRawSamples (const byte *data, int samples, int rate, int width, int channels)
{
int processed, state, size;
unsigned format, buffer;
if (!s_initialized)
return;
if (!s_streamingChannel)
return;
// Unqueue and delete any processed buffers
qalGetSourcei(s_streamingChannel->sourceNum, AL_BUFFERS_PROCESSED, &processed);
if (processed > 0){
while (processed--){
qalSourceUnqueueBuffers(s_streamingChannel->sourceNum, 1, &buffer);
qalDeleteBuffers(1, &buffer);
}
}
// Calculate buffer size
size = samples * width * channels;
// Set buffer format
if (width == 2)
{
if (channels == 2)
format = AL_FORMAT_STEREO16;
else
format = AL_FORMAT_MONO16;
}
else
{
if (channels == 2)
format = AL_FORMAT_STEREO8;
else
format = AL_FORMAT_MONO8;
}
// Upload and queue the new buffer
qalGenBuffers(1, &buffer);
qalBufferData(buffer, format, (byte *)data, size, rate);
qalSourceQueueBuffers(s_streamingChannel->sourceNum, 1, &buffer);
// Update volume
qalSourcef(s_streamingChannel->sourceNum, AL_GAIN, s_sfxVolume->value);
// If not playing, then do so
qalGetSourcei(s_streamingChannel->sourceNum, AL_SOURCE_STATE, &state);
if (state != AL_PLAYING)
qalSourcePlay(s_streamingChannel->sourceNum);
}
/*
* Queues raw samples for playback. Used
* by the background music an cinematics.
*/
void
AL_RawSamples(int samples, int rate, int width, int channels,
byte *data, float volume)
{
ALuint buffer;
ALuint format = 0;
/* Work out format */
if (width == 1)
{
if (channels == 1)
{
format = AL_FORMAT_MONO8;
}
else if (channels == 2)
{
format = AL_FORMAT_STEREO8;
}
}
else if (width == 2)
{
if (channels == 1)
{
format = AL_FORMAT_MONO16;
}
else if (channels == 2)
{
format = AL_FORMAT_STEREO16;
}
}
/* Create a buffer, and stuff the data into it */
qalGenBuffers(1, &buffer);
qalBufferData(buffer, format, (ALvoid *)data,
(samples * width * channels), rate);
active_buffers++;
/* set volume */
if (volume > 1.0f)
{
volume = 1.0f;
}
qalSourcef(streamSource, AL_GAIN, volume);
/* Shove the data onto the streamSource */
qalSourceQueueBuffers(streamSource, 1, &buffer);
/* emulate behavior of S_RawSamples for s_rawend */
s_rawend += samples;
}
void AL_RawSamples( int samples, int rate, int width, int channels, byte *data, float volume )
{
ALuint buffer;
ALuint format;
format = S_AL_Format( width, channels );
// Create a buffer, and stuff the data into it
qalGenBuffers(1, &buffer);
qalBufferData(buffer, format, (ALvoid *)data, (samples * width * channels), rate);
active_buffers++;
// set volume
qalSourcef( streamSource, AL_GAIN, volume );
// Shove the data onto the streamSource
qalSourceQueueBuffers(streamSource, 1, &buffer);
// emulate behavior of S_RawSamples for s_rawend
s_rawend += samples;
}
/*
=================
S_AL_StartBackgroundTrack
=================
*/
static
void S_AL_StartBackgroundTrack( const char *intro, const char *loop )
{
int i;
qboolean issame;
// Stop any existing music that might be playing
S_AL_StopBackgroundTrack();
if((!intro || !*intro) && (!loop || !*loop))
return;
// Allocate a musicSource
S_AL_MusicSourceGet();
if(musicSourceHandle == -1)
return;
if (!loop || !*loop)
{
loop = intro;
issame = qtrue;
}
else if(intro && *intro && !strcmp(intro, loop))
issame = qtrue;
else
issame = qfalse;
// Copy the loop over
strncpy( s_backgroundLoop, loop, sizeof( s_backgroundLoop ) );
if(!issame)
{
// Open the intro and don't mind whether it succeeds.
// The important part is the loop.
intro_stream = S_CodecOpenStream(intro);
}
else
intro_stream = NULL;
mus_stream = S_CodecOpenStream(s_backgroundLoop);
if(!mus_stream)
{
S_AL_CloseMusicFiles();
S_AL_MusicSourceFree();
return;
}
// Generate the musicBuffers
qalGenBuffers(NUM_MUSIC_BUFFERS, musicBuffers);
// Queue the musicBuffers up
for(i = 0; i < NUM_MUSIC_BUFFERS; i++)
{
S_AL_MusicProcess(musicBuffers[i]);
}
qalSourceQueueBuffers(musicSource, NUM_MUSIC_BUFFERS, musicBuffers);
// Set the initial gain property
qalSourcef(musicSource, AL_GAIN, s_alGain->value * s_musicVolume->value);
// Start playing
qalSourcePlay(musicSource);
musicPlaying = qtrue;
}
void SndAl_RawSamples( int stream, int samples, int rate, int width, int channels, const byte *data, float volume, int entityNum )
{
ALuint buffer;
ALuint format = AL_FORMAT_STEREO16;
ALint state;
// Work out AL format
if ( width == 1 )
{
if ( channels == 1 )
{
format = AL_FORMAT_MONO8;
}
else if ( channels == 2 )
{
format = AL_FORMAT_STEREO8;
}
}
else if ( width == 2 )
{
if ( channels == 1 )
{
format = AL_FORMAT_MONO16;
}
else if ( channels == 2 )
{
format = AL_FORMAT_STEREO16;
}
}
// Create the source if necessary
if ( source_handle == -1 )
{
allocate_channel();
// Failed?
if ( source_handle == -1 )
{
si.Printf( PRINT_ALL, "Can't allocate streaming source\n" );
return;
}
}
// Create a buffer, and stuff the data into it
qalGenBuffers( 1, &buffer );
qalBufferData( buffer, format, data, ( samples * width * channels ), rate );
// Shove the data onto the source
qalSourceQueueBuffers( source, 1, &buffer );
// Start the source playing if necessary
qalGetSourcei( source, AL_SOURCE_STATE, &state );
// Volume
qalSourcef( source, AL_GAIN, volume * s_volume->value * s_gain->value );
if ( !is_playing )
{
qalSourcePlay( source );
is_playing = qtrue;
}
}
void S_UpdateMusic( void )
{
int i, processed;
ALint state;
ALenum error;
ALuint b;
int num_processed_buffers;
ALuint processed_buffers[MUSIC_BUFFERS];
if( !s_bgTrack )
return;
if( !s_musicvolume->value && !s_bgTrack->isUrl )
return;
if( s_bgTrackPaused || s_bgTrackLocked )
return;
if( s_bgTrackBuffering )
{
if( S_EoStream( s_bgTrack->stream ) ) {
// we should now advance to the next track
S_CloseMusicTrack( s_bgTrack );
}
else {
if( S_FTellSteam( s_bgTrack->stream ) < BACKGROUND_TRACK_BUFFERING_SIZE )
return;
// in case we delayed openening to let the stream be cached for a while,
// start actually reading from it now
if( !S_ContOpenStream( s_bgTrack->stream ) ) {
// let music_process do the dirty job of advancing to the next track
S_CloseMusicTrack( s_bgTrack );
s_bgTrack->ignore = qtrue;
}
}
s_bgTrackBuffering = qfalse;
}
if( !queued_buffers )
{
// if we haven't queued any buffers yet, do it now
num_processed_buffers = MUSIC_BUFFERS;
memcpy( processed_buffers, buffers, sizeof( buffers ) );
}
else
{
num_processed_buffers = 0;
processed = 0;
qalGetSourcei( source, AL_BUFFERS_PROCESSED, &processed );
while( processed-- )
{
qalSourceUnqueueBuffers( source, 1, &b );
processed_buffers[num_processed_buffers++] = b;
}
}
for( i = 0; i < num_processed_buffers; i++ )
{
b = processed_buffers[i];
if( !music_process( b ) )
{
Com_Printf( "Error processing music data\n" );
S_StopBackgroundTrack();
return;
}
qalSourceQueueBuffers( source, 1, &b );
if( ( error = qalGetError() ) != AL_NO_ERROR )
{
Com_Printf( "Couldn't queue music data (%s)\n", S_ErrorMessage( error ) );
S_StopBackgroundTrack();
return;
}
}
// If it's not still playing, give it a kick
qalGetSourcei( source, AL_SOURCE_STATE, &state );
if( !queued_buffers || state != AL_PLAYING )
{
queued_buffers = qtrue;
qalSourcePlay( source );
}
if( s_musicvolume->modified )
qalSourcef( source, AL_GAIN, s_musicvolume->value );
}