int GetRawBuffer(short* buf,int length,float amp,int channel)
{
if ((channel<1)||(channel>48))
{
return PSPAALIB_ERROR_INVALID_CHANNEL;
}
if ((PSPAALIB_CHANNEL_WAV_1<=channel)&&(channel<=PSPAALIB_CHANNEL_WAV_32))
{
return GetBufferWav(buf,length,amp,channel-PSPAALIB_CHANNEL_WAV_1);
}
if ((PSPAALIB_CHANNEL_OGG_1<=channel)&&(channel<=PSPAALIB_CHANNEL_OGG_10))
{
return GetBufferOgg(buf,length,amp,channel-PSPAALIB_CHANNEL_OGG_1);
}
if ((PSPAALIB_CHANNEL_SCEMP3_1<=channel)&&(channel<=PSPAALIB_CHANNEL_SCEMP3_2))
{
return GetBufferSceMp3(buf,length,amp,channel-PSPAALIB_CHANNEL_SCEMP3_1);
}
if ((PSPAALIB_CHANNEL_AT3_1<=channel)&&(channel<=PSPAALIB_CHANNEL_AT3_2))
{
return GetBufferAt3(buf,length,amp,channel-PSPAALIB_CHANNEL_AT3_1);
}
return PSPAALIB_ERROR_INVALID_CHANNEL;
}
int GetBufferWav(short* buf,int length,float amp,int channel)
{
if ((channel<0)||(channel>31))
{
return PSPAALIB_ERROR_WAV_INVALID_CHANNEL;
}
if (streamsWav[channel].paused || !streamsWav[channel].initialized || streamsWav[channel].stopReason==PSPAALIB_STOP_END_OF_STREAM)
{
memset((char*)buf,0,4*length);
return PSPAALIB_WARNING_PAUSED_BUFFER_REQUESTED;
}
int i,index;
int realLength=length*streamsWav[channel].sigBytes*streamsWav[channel].numChannels*streamsWav[channel].sampleRate/PSP_SAMPLE_RATE;
if (streamsWav[channel].dataPos+realLength>=streamsWav[channel].dataLength)
{
RewindWav(channel);
if (!streamsWav[channel].autoloop)
{
streamsWav[channel].paused=TRUE;
streamsWav[channel].stopReason=PSPAALIB_STOP_END_OF_STREAM;
memset((char*)buf,0,4*length);
return PSPAALIB_SUCCESS;
}
return GetBufferWav(buf,length,amp,channel);
}
if (streamsWav[channel].loadToRam)
{
for (i=0;i<length;i++)
{
if (streamsWav[channel].sigBytes==1)
{
index=streamsWav[channel].numChannels*(int)(i*streamsWav[channel].sampleRate/PSP_SAMPLE_RATE)+streamsWav[channel].dataPos;
buf[2*i]=(streamsWav[channel].data[index]<<8)*amp;
index+=((streamsWav[channel].numChannels>1)?1:0);
buf[2*i+1]=(streamsWav[channel].data[index]<<8)*amp;
}
else if (streamsWav[channel].sigBytes==2)
{
index=streamsWav[channel].numChannels*(int)(i*streamsWav[channel].sampleRate/PSP_SAMPLE_RATE)+(streamsWav[channel].dataPos/2);
buf[2*i]=(((short*)streamsWav[channel].data)[index])*amp;
index+=((streamsWav[channel].numChannels>1)?1:0);
buf[2*i+1]=(((short*)streamsWav[channel].data)[index])*amp;
}
else
{
memset((char*)buf,0,4*length);
return PSPAALIB_WARNING_WAV_INVALID_SBPS;
}
}
}
else
{
sceIoRead(streamsWav[channel].file,streamsWav[channel].data,realLength);
for (i=0;i<length;i++)
{
if (streamsWav[channel].sigBytes==1)
{
index=streamsWav[channel].numChannels*(int)(i*streamsWav[channel].sampleRate/PSP_SAMPLE_RATE);
buf[2*i]=(streamsWav[channel].data[index]<<8)*amp;
index+=((streamsWav[channel].numChannels>1)?1:0);
buf[2*i+1]=(streamsWav[channel].data[index]<<8)*amp;
}
else if (streamsWav[channel].sigBytes==2)
{
index=streamsWav[channel].numChannels*(int)(i*streamsWav[channel].sampleRate/PSP_SAMPLE_RATE);
buf[2*i]=(((short*)streamsWav[channel].data)[index])*amp;
index+=((streamsWav[channel].numChannels>1)?1:0);
buf[2*i+1]=(((short*)streamsWav[channel].data)[index])*amp;
}
else
{
memset((char*)buf,0,4*length);
return PSPAALIB_WARNING_WAV_INVALID_SBPS;
}
}
}
streamsWav[channel].dataPos+=realLength;
return PSPAALIB_SUCCESS;
}
