int GetBufferAt3(short* buf,int length,float amp,int channel)
{
if ((channel<0)||(channel>1))
{
return PSPAALIB_ERROR_AT3_INVALID_CHANNEL;
}
int byteLength=length<<2;
if ((streamsAt3[channel].paused)||(!streamsAt3[channel].initialized))
{
memset(buf,0,byteLength);
return PSPAALIB_WARNING_PAUSED_BUFFER_REQUESTED;
}
int num,end,remain,i;
while (streamsAt3[channel].bufSize<byteLength)
{
sceAtracDecodeData(streamsAt3[channel].id,(void*)streamsAt3[channel].tempBuf,&num,&end,&remain);
if (end)
{
if (!streamsAt3[channel].autoloop)
{
streamsAt3[channel].paused=TRUE;
streamsAt3[channel].stopReason=PSPAALIB_STOP_END_OF_STREAM;
memset(buf,0,byteLength);
return PSPAALIB_WARNING_END_OF_STREAM_REACHED;
}
RewindAt3(channel);
}
streamsAt3[channel].buf=(unsigned short*)realloc(streamsAt3[channel].buf,streamsAt3[channel].bufSize+(4*num));
memcpy((void*)streamsAt3[channel].buf+streamsAt3[channel].bufSize,streamsAt3[channel].tempBuf,4*num);
streamsAt3[channel].bufSize+=4*num;
}
for (i=0;i<2*length;i++)
{
buf[i]=streamsAt3[channel].buf[i]*amp;
}
streamsAt3[channel].bufSize-=byteLength;
memmove((void*)streamsAt3[channel].buf,(void*)streamsAt3[channel].buf+byteLength,streamsAt3[channel].bufSize);
return PSPAALIB_SUCCESS;
}
int main(int argc, char *argv[]) {
char *at3_data;
int at3_size;
char *decode_data;
int decode_size;
int n;
FILE *file;
int atracID;
int maxSamples = 0;
int result;
int channel;
u32 puiPosition;
u32 puiDataByte;
if ((file = fopen("sample.at3", "rb")) != NULL) {
fseek(file, 0, SEEK_END);
at3_size = ftell(file);
fseek(file, 0, SEEK_SET);
at3_data = malloc(at3_size);
decode_data = malloc(decode_size = 512 * 1024);
memset(at3_data, 0, at3_size);
memset(decode_data, 0, decode_size);
fread(at3_data, at3_size, 1, file);
fclose(file);
}
pspSdkLoadStartModule("flash0:/kd/audiocodec.prx", PSP_MEMORY_PARTITION_KERNEL);
pspSdkLoadStartModule("flash0:/kd/libatrac3plus.prx", PSP_MEMORY_PARTITION_KERNEL);
printf("at3: %08X, %08X\n", (unsigned int)at3_data, at3_size);
printf("Header: %s\n", (char *)at3_data);
atracID = sceAtracSetDataAndGetID(at3_data, at3_size);
result = sceAtracSetLoopNum(atracID, 2);
printf("sceAtracSetLoopNum: %08X\n", result);
printf("sceAtracSetDataAndGetID: %08X\n", atracID);
result = sceAtracGetMaxSample(atracID, &maxSamples);
printf("sceAtracGetMaxSample: %08X, %d\n", result, maxSamples);
channel = sceAudioChReserve(0, maxSamples, PSP_AUDIO_FORMAT_STEREO);
result = sceAtracGetSecondBufferInfo(atracID, &puiPosition, &puiDataByte);
printf("sceAtracGetSecondBufferInfo: %08X, %u, %u\n", result, (unsigned int)puiPosition, (unsigned int)puiDataByte);
int end = 0;
int steps = 0;
while (!end) {
//int remainFrame = -1;
int remainFrame = 0;
//int decodeBufferPosition = 0;
int samples = 0;
int nextSample = 0;
u32 nextPosition = 0;
if (steps < 4) {
result = sceAtracGetNextSample(atracID, &nextSample);
printf("sceAtracGetNextSample(%d): %d\n", result, nextSample);
result = sceAtracGetNextDecodePosition(atracID, &nextPosition);
printf("sceAtracGetNextDecodePosition(%d): %u\n", result, (unsigned int)nextPosition);
}
result = sceAtracDecodeData(atracID, (u16 *)decode_data, &samples, &end, &remainFrame);
if (steps < 4) {
}
sceAudioSetChannelDataLen(channel, samples);
sceAudioOutputBlocking(channel, 0x8000, decode_data);
result = sceAtracGetRemainFrame(atracID, &remainFrame);
if (steps < 4) {
printf("sceAtracDecodeData: %08X, at3_size: %d, decode_size: %d, samples: %d, end: %d, remainFrame: %d\n\n", result, at3_size, decode_size, samples, end, remainFrame);
if (steps == 1) {
for (n = 0; n < 32; n++) printf("%04X ", (u16)decode_data[n]);
}
printf("sceAtracGetRemainFrame: %08X\n", result);
}
steps++;
}
sceAudioChRelease(channel);
result = sceAtracReleaseAtracID(atracID);
printf("sceAtracGetRemainFrame: %08X\n", result);
return 0;
}
