C++ (Cpp) S_AdvanceBackgroundTrack Examples

Example #1

static qboolean music_process( ALuint b )
{
    int l = 0;
    ALuint format;
    ALenum error;
    snd_stream_t *music_stream;

start:
    if( s_bgTrackBuffering )
        return qtrue;

    music_stream = s_bgTrack->stream;
    if( music_stream ) {
        l = S_ReadStream( music_stream, MUSIC_BUFFER_SIZE, decode_buffer );
    }
    else {
        l = 0;
    }

    if( !l )
    {
        bgTrack_t *cur;

        cur = s_bgTrack;
        if( !S_AdvanceBackgroundTrack( 1 ) )
        {
            if( !S_ValidMusicFile( s_bgTrack ) )
                return qfalse;
        }
        else
        {
            // we've advanced to the next track, close this one
            S_CloseMusicTrack( cur );
            goto start;
        }

        if( !S_ResetStream( music_stream ) )
        {
            // if failed, close the track?
            return qfalse;
        }

        goto start;
    }

    format = S_SoundFormat( music_stream->info.width, music_stream->info.channels );
    qalBufferData( b, format, decode_buffer, l, music_stream->info.rate );
    if( ( error = qalGetError() ) != AL_NO_ERROR )
        return qfalse;

    return qtrue;
}

Example #2

File: snd_music.c Project: Clever-Boy/qfusion

/*
* S_UpdateBackgroundTrack
*/
void S_UpdateBackgroundTrack( void )
{
	int samples, maxSamples;
	int read, maxRead, total;
	float scale;
	uint8_t data[MAX_RAW_SAMPLES*4];

	if( !s_bgTrack )
		return;
	if( !s_musicvolume->value && !s_bgTrack->muteOnPause )
		return;
	if( s_bgTrackLoading || s_bgTrackPaused || s_bgTrackLocked > 0 )
		return;

	if( !s_bgTrack->info.channels || ! s_bgTrack->info.width )
	{
		s_bgTrack->ignore = true;
		S_AdvanceBackgroundTrack( 1 );
		return;
	}

	scale = (float)s_bgTrack->info.rate / dma.speed;
	maxSamples = sizeof( data ) / s_bgTrack->info.channels / s_bgTrack->info.width;

	while( 1 )
	{
		unsigned int rawSamplesLength;

		rawSamplesLength = S_GetRawSamplesLength();
		if( rawSamplesLength >= BACKGROUND_TRACK_PRELOAD_MSEC )
			return;

		samples = BACKGROUND_TRACK_PRELOAD_MSEC - rawSamplesLength;
		samples = (float)samples / 1000.0 * s_bgTrack->info.rate / scale;

		if( samples > maxSamples )
			samples = maxSamples;
		if( samples > MAX_RAW_SAMPLES )
			samples = MAX_RAW_SAMPLES;

		maxRead = samples * s_bgTrack->info.channels * s_bgTrack->info.width;

		total = 0;
		while( total < maxRead )
		{
			int seek;

			if( s_bgTrack->read )
				read = s_bgTrack->read( s_bgTrack, data + total, maxRead - total );
			else
				read = trap_FS_Read( data + total, maxRead - total, s_bgTrack->file );

			if( !read )
			{
				if( !s_bgTrack->loop )
				{
					if( !S_AdvanceBackgroundTrack( 1 ) )
					{
						if( !S_ValidMusicFile( s_bgTrack ) )
						{
							S_StopBackgroundTrack();
							return;
						}
					}
					if( s_bgTrackBuffering || s_bgTrackLoading ) {
						return;
					}
				}

				if( s_bgTrack->seek )
					seek = s_bgTrack->seek( s_bgTrack, s_bgTrack->info.dataofs );
				else
					seek = trap_FS_Seek( s_bgTrack->file, s_bgTrack->info.dataofs, FS_SEEK_SET );
				if( seek )
				{
					// if the seek have failed we're going to loop here forever unless
					// we stop now
					S_StopBackgroundTrack();
					return;
				}
			}

			total += read;
		}

		byteSwapRawSamples( samples, s_bgTrack->info.width, 
			s_bgTrack->info.channels, data );

		S_RawSamples2( samples, s_bgTrack->info.rate, s_bgTrack->info.width, 
			s_bgTrack->info.channels, data, s_bgTrackMuted ? 0 : s_musicvolume->value * 255 );
	}
}

Example #3

File: snd_music.c Project: Clever-Boy/qfusion

/*
* S_NextBackgroundTrack
*/
void S_NextBackgroundTrack( void )
{
	S_AdvanceBackgroundTrack(  1 );
}

Example #4

File: snd_music.c Project: Clever-Boy/qfusion

/*
* S_PrevBackgroundTrack
*/
void S_PrevBackgroundTrack( void )
{
	S_AdvanceBackgroundTrack( -1 );
}