void getOggData(float **dst,int num_frames){
float **sound;
long read=ov_read_float(&oggvorbisfile,&sound,num_frames,¤t_oggsection);
if(read==0){
ov_pcm_seek(&oggvorbisfile,0);
read=ov_read_float(&oggvorbisfile,&sound,num_frames,¤t_oggsection);
}
memcpy(dst[0],sound[0],read*sizeof(float));
memcpy(dst[1],sound[1],read*sizeof(float));
if(read<num_frames){
float *newdst[2]={dst[0]+read,dst[1]+read};
getOggData(newdst,num_frames-read);
}
}
size_t SourceFileOggVorbis::performRead( Buffer *buffer, size_t bufferFrameOffset, size_t numFramesNeeded )
{
CI_ASSERT( buffer->getNumFrames() >= bufferFrameOffset + numFramesNeeded );
size_t readCount = 0;
while( readCount < numFramesNeeded ) {
float **outChannels;
int section;
long outNumFrames = ov_read_float( &mOggVorbisFile, &outChannels, int( numFramesNeeded - readCount ), §ion );
if( outNumFrames <= 0 ) {
if( outNumFrames < 0 )
throw AudioFileExc( "ov_read_float error", (int32_t)outNumFrames );
break;
}
size_t offset = bufferFrameOffset + readCount;
for( size_t ch = 0; ch < mNumChannels; ch++ )
memcpy( buffer->getChannel( ch ) + offset, outChannels[ch], outNumFrames * sizeof( float ) );
readCount += outNumFrames;
}
return static_cast<size_t>( readCount );
}
void OGGDecoder::reader()
{
float **pcm;
long ret=1;
int bit;
size_t j,done=0;
while (ATOMIC_CAS(&owner->work,true,true) && ret > 0 ){
j=0;
ret=1;
done=0;
while (done<VPBUFFER_FRAMES && ret > 0){
ret = ov_read_float( &vf, &pcm, VPBUFFER_FRAMES - done,&bit );
for (long i=0;i<ret;i++){
for (size_t ch=0;ch<bout->chans;ch++){
buffer[j]=pcm[ch][i];
j++;
}
}
done+=ret;
}
memcpy(bout->buffer[*bout->cursor], buffer, VPBUFFER_FRAMES*bout->chans*sizeof(float) );
owner->postProcess(bout->buffer[*bout->cursor]);
owner->mutex[0].lock();
VP_SWAP_BUFFERS(bout);
owner->mutex[1].unlock();
}
}
Int64 OggAudioSource::decodeData(float* buffer, UInt32 numFrames)
{
RScopedLock l(&mDecodeLock);
int bitStream;
float** data = 0;
long framesRead = ov_read_float(&mOggFile, &data, numFrames, &bitStream);
if(framesRead > 0)
{
for(int i = 0; i < getNumChannels(); ++i)
{
int channels = getNumChannels();
float *pTemp = &buffer[i];
for(int j = 0; j < framesRead; ++j)
{
*pTemp = data[i][j];
pTemp += channels;
}
}
}
else
mEOF = true;
return framesRead;
}
void OggVorbisMusic::processAudio(void *outputBuffer, unsigned int nBufferFrames, double, RtAudioStreamStatus)
{
int requestSize = nBufferFrames;
int startOffset = 0;
float* out = (float*)outputBuffer;
while (requestSize > 0)
{
float** ov_buffers;
int currentBitstream;
int readed = ov_read_float(&vorbisFile, &ov_buffers, requestSize, ¤tBitstream);
if (readed < 0)
{
handleOVError(readed);
break;
}
jassert(readed <= requestSize); // wrongly understand the documentation
vorbis_info *vi = ov_info(&vorbisFile, -1);
for (int c = 0; c < vi->channels; ++c)
{
for (int s = 0; s < readed; ++s)
{
out[startOffset + s * vi->channels + c] = ov_buffers[c][s] * 0.5f;
}
}
startOffset += readed * vi->channels;
requestSize -= readed;
}
}
SINT SoundSourceOggVorbis::readSampleFrames(
SINT numberOfFrames, CSAMPLE* sampleBuffer,
SINT sampleBufferSize, bool readStereoSamples) {
DEBUG_ASSERT(isValidFrameIndex(m_curFrameIndex));
DEBUG_ASSERT(getSampleBufferSize(numberOfFrames, readStereoSamples) <= sampleBufferSize);
const SINT numberOfFramesTotal = math_min(
numberOfFrames, getMaxFrameIndex() - m_curFrameIndex);
CSAMPLE* pSampleBuffer = sampleBuffer;
SINT numberOfFramesRemaining = numberOfFramesTotal;
while (0 < numberOfFramesRemaining) {
float** pcmChannels;
int currentSection;
// Use 'long' here, because ov_read_float() returns this type.
// This is an exception from the rule not to any types with
// differing sizes on different platforms.
// https://bugs.launchpad.net/mixxx/+bug/1094143
const long readResult = ov_read_float(&m_vf, &pcmChannels,
numberOfFramesRemaining, ¤tSection);
if (0 < readResult) {
m_curFrameIndex += readResult;
if (kChannelCountMono == getChannelCount()) {
if (readStereoSamples) {
for (long i = 0; i < readResult; ++i) {
*pSampleBuffer++ = pcmChannels[0][i];
*pSampleBuffer++ = pcmChannels[0][i];
}
} else {
for (long i = 0; i < readResult; ++i) {
*pSampleBuffer++ = pcmChannels[0][i];
}
}
} else if (readStereoSamples || (kChannelCountStereo == getChannelCount())) {
for (long i = 0; i < readResult; ++i) {
*pSampleBuffer++ = pcmChannels[0][i];
*pSampleBuffer++ = pcmChannels[1][i];
}
} else {
for (long i = 0; i < readResult; ++i) {
for (SINT j = 0; j < getChannelCount(); ++j) {
*pSampleBuffer++ = pcmChannels[j][i];
}
}
}
numberOfFramesRemaining -= readResult;
} else {
qWarning() << "Failed to read from OggVorbis file:" << readResult;
break; // abort
}
}
DEBUG_ASSERT(isValidFrameIndex(m_curFrameIndex));
DEBUG_ASSERT(numberOfFramesTotal >= numberOfFramesRemaining);
return numberOfFramesTotal - numberOfFramesRemaining;
}
unsigned int oggDecoder::decode( float*** data, int count )
{
int ret = -1;
while( ret < 0)
{
ret = ov_read_float( decoder, data, count, ¤t_section);
if(ret == OV_HOLE)
qWarning("Hole in ogg datastream detected.. skipping...");
}
return ret;
}
int FileVorbis::read_samples(double *buffer, int64_t len)
{
if(!fd) return 0;
// printf("FileVorbis::read_samples 1 %d %d %d %d\n",
// history_start,
// history_size,
// file->current_sample,
// len);
float **vorbis_output;
int bitstream;
int accumulation = 0;
update_pcm_history(len);
// Fill history buffer
if(decode_start != decode_end)
{
ov_pcm_seek(&vf, decode_start);
decode_end = decode_start;
}
while(accumulation < decode_len)
{
int result = ov_read_float(&vf,
&vorbis_output,
decode_len - accumulation,
&bitstream);
//printf("FileVorbis::read_samples 1 %d %d %d\n", result, len, accumulation);
if(!result) break;
append_history(vorbis_output, result);
accumulation += result;
}
read_history(buffer,
file->current_sample,
file->current_channel,
len);
// printf("FileVorbis::read_samples 2 %d %d %d %d\n",
// history_start,
// history_size,
// file->current_sample,
// len);
return 0;
}
static int oggread_decode_input(t_oggread *x)
{
long ret; /* bytes per channel returned by decoder */
int i;
float **pcm;
x->x_vi = ov_info(&x->x_ov, x->x_current_section);
while(!x->x_eos)
{
ret = ov_read_float(&x->x_ov, &pcm, READ, &x->x_current_section);
if (ret == 0)
{
/* EOF */
x->x_eos = 1;
x->x_stream = 0;
clock_unset(x->x_clock);
// post("oggread~: end of file detected, stopping");
outlet_bang(x->x_out_end);
}
else if (ret < 0)
{
/* error in the stream. Not a problem, just reporting it in
case we (the app) cares. In this case, we don't. */
}
else
{
/* we don't bother dealing with sample rate changes, etc, but
you'll have to */
long j;
for(j = 0; j < ret; j++)
{
for(i = 0; i < x->x_vi->channels; i++)
{
x->x_outbuffer[x->x_outwriteposition] = pcm[i][j];
x->x_outwriteposition = (x->x_outwriteposition + 1)%x->x_outbuffersize;
}
}
x->x_outunread += (t_int)ret * x->x_vi->channels;
}
break;
}
x->x_decoded = (t_int)ret * x->x_vi->channels; /* num. of samples we got from decoder */
x->x_position = (t_float)ov_time_tell(&x->x_ov);
/* exit decoding 'loop' here, we'll get called again by perform() */
return 1;
}
static void
read_packet (VorbisHandle *vhandle)
{
gfloat **pcm = NULL;
gint stream_id, i;
vhandle->pcm_pos = ov_pcm_tell (&vhandle->ofile) - vhandle->soffset;
vhandle->pcm_length = ov_read_float (&vhandle->ofile, &pcm, G_MAXINT, &stream_id);
if (vhandle->pcm_pos < 0 || vhandle->pcm_length < 0 || stream_id != vhandle->bitstream)
{
/* urg, this is bad! */
dh_vorbis_coarse_seek (&vhandle->dhandle, 0);
}
else
for (i = 0; i < vhandle->dhandle.setup.n_channels; i++)
vhandle->pcm[i] = pcm[i];
}
void WaveView::setAudio(Audio* audio)
{
waves.clear();
OggVorbis_File vf;
vorbisData.pos = 0;
vorbisData.data = audio->data();
int rv = ov_open_callbacks(&vorbisData, &vf, 0, 0, ovCallbacks);
if (rv < 0) {
qDebug("ogg open failed: %d", rv);
return;
}
int rn = 0;
const int n = 10000 / WSCALE;
uchar dst[n];
float* r = 0;
float* l = 0;
for (;;) {
for (int i = 0; i < n; ++i) {
float val = 0;
for (int k = 0; k < WSCALE; ++k) {
if (rn == 0) {
float** pcm;
int section;
rn = ov_read_float(&vf, &pcm, 1000, §ion);
if (rn == 0) {
for (; i < n; ++i)
dst[i] = 0;
waves.append((char*)dst, n);
ov_clear(&vf);
return;
}
r = pcm[0];
l = pcm[1];
}
val += fabsf(*r++) + fabsf(*l++);
--rn;
}
unsigned int v = lrint(val * 128);
if (v > 255)
v = 255;
dst[i] = v;
}
waves.append((char*)dst, n);
}
}
// Returns samples (1 sample contains data from all channels)
long OggStream::read(float* buffer, int bytes)
{
float **pcm;
long samples_read = ov_read_float(&mStream, &pcm, bytes, &mSection);
switch(samples_read) {
case OV_HOLE:
LOG4CXX_WARN(narratorOsLog, "Interruption in data while playing " << mStreamInfo);
break;
case OV_EBADLINK:
LOG4CXX_WARN(narratorOsLog, "Invalid stream section was supplied while playing " << mStreamInfo);
break;
}
//Convert the samples to a linear vector
float *bufptr = buffer;
for (long i = 0; i < samples_read; i++)
for(int c = 0; c < mChannels; c++)
*bufptr++ = pcm[c][i];
return (samples_read)/mChannels;
}
gc_int32 gauX_sample_source_ogg_read(void* in_context, void* in_dst, gc_int32 in_numSamples,
tOnSeekFunc in_onSeekFunc, void* in_seekContext)
{
gau_SampleSourceOggContext* ctx = &((gau_SampleSourceOgg*)in_context)->context;
gc_int32 samplesLeft = in_numSamples;
gc_int32 samplesRead;
gc_int32 channels = ctx->oggInfo->channels;
gc_int32 totalSamples = 0;
size_t dataSizeOff = 0;
do{
gc_int32 bitStream;
gc_float32** samples;
gc_int32 i;
gc_int16* dst;
gc_int32 channel;
gc_mutex_lock(ctx->oggMutex);
samplesRead = ov_read_float(&ctx->oggFile, &samples, samplesLeft, &bitStream);
if(samplesRead == 0)
ctx->endOfSamples = 1;
gc_mutex_unlock(ctx->oggMutex);
if(samplesRead > 0)
{
samplesLeft -= samplesRead;
dst = (gc_int16*)(in_dst) + totalSamples * channels;
totalSamples += samplesRead;
for(i = 0; i < samplesRead; ++i)
{
for(channel = 0; channel < channels; ++channel, ++dst)
{
gc_float32 sample = samples[channel][i] * 32768.0f;
gc_int32 int32Sample = (gc_int32)sample;
gc_int16 int16Sample;
int32Sample = int32Sample > 32767 ? 32767 : int32Sample < -32768 ? -32768 : int32Sample;
int16Sample = (gc_int16)int32Sample;
*dst = int16Sample;
}
}
}
} while (samplesRead > 0 && samplesLeft);
return totalSamples;
}
void OGGDecoder::reader()
{
float **pcm;
long ret=1;
int bit;
size_t j,done=0;
while (ATOMIC_CAS(&owner->work,true,true) && ret > 0 ){
j=0;
ret=1;
done=0;
if (ATOMIC_CAS(&seek_to,SEEK_MAX,SEEK_MAX) != SEEK_MAX ){
if (ov_seekable(&vf))
ov_pcm_seek(&vf,(ogg_int64_t) seek_to);
seek_to = SEEK_MAX;
}
while (done<VPBUFFER_FRAMES && ret > 0){
ret = ov_read_float( &vf, &pcm, VPBUFFER_FRAMES - done,&bit );
for (long i=0;i<ret;i++){
for (size_t ch=0;ch<bout->chans;ch++){
buffer[j]=(float)pcm[ch][i];
j++;
}
}
done+=ret;
}
int samples= done*bout->chans;
memcpy(bout->currentBuffer(), buffer,samples*sizeof(float) );
for (int i=samples;i<VPBUFFER_FRAMES*bout->chans;i++){
bout->currentBuffer()[i]=0.0f;
}
owner->postProcess();
owner->mutex[0].lock();
VP_SWAP_BUFFERS(bout);
owner->mutex[1].unlock();
}
}
void VorbisFileReader::fillBuffer()
{
buffer_start_time = ov_time_tell(&vf);
if (buffer_start_time < 0)
{
state = sError;
throwVorbisError((int)buffer_start_time, L"fillBuffer (1)");
}
int ret = ov_read_float(&vf, &buffer, buffer_size_request, ¤t_section);
if (ret < 0)
{
state = sError;
throwVorbisError(ret, L"fillBuffer (2)");
}
else if (ret >= 0)
{
cursor_position_in_buffer = 0;
buffer_actual_size = ret;
}
}
int RageSoundReader_Vorbisfile::Read( float *buf, int iFrames )
{
int frames_read = 0;
while( iFrames && !eof )
{
const int bytes_per_frame = sizeof(float)*channels;
int iFramesRead = 0;
{
int curofs = (int) ov_pcm_tell(vf);
if( curofs < read_offset )
{
/* The timestamps moved backwards. Ignore it. This file probably
* won't sync correctly. */
LOG->Trace( "p ahead %p %i < %i, we're ahead by %i",
this, curofs, read_offset, read_offset-curofs );
read_offset = curofs;
}
else if( curofs > read_offset )
{
/* Our offset doesn't match. We have a hole in the data, or corruption.
* If we're reading with accurate syncing, insert silence to line it up.
* That way, corruptions in the file won't casue desyncs. */
/* In bytes: */
int iSilentFrames = curofs - read_offset;
iSilentFrames = min( iSilentFrames, (int) iFrames );
int silence = iSilentFrames * bytes_per_frame;
CHECKPOINT_M( ssprintf("p %i,%i: %i frames of silence needed", curofs, read_offset, silence) );
memset( buf, 0, silence );
iFramesRead = iSilentFrames;
}
}
if( iFramesRead == 0 )
{
int bstream;
#if defined(INTEGER_VORBIS)
int ret = ov_read( vf, (char *) buf, iFrames * channels * sizeof(int16_t), &bstream );
#else // float vorbis decoder
float **pcm;
int ret = ov_read_float( vf, &pcm, iFrames, &bstream );
#endif
{
vorbis_info *vi = ov_info( vf, -1 );
ASSERT( vi != NULL );
if( (unsigned) vi->channels != channels )
RageException::Throw( "File \"%s\" changes channel count from %i to %i; not supported.",
filename.c_str(), channels, (int)vi->channels );
}
if( ret == OV_HOLE )
continue;
if( ret == OV_EBADLINK )
{
SetError( ssprintf("Read: OV_EBADLINK") );
return ERROR;
}
if( ret == 0 )
{
eof = true;
continue;
}
#if defined(INTEGER_VORBIS)
if( ret > 0 )
{
int iSamplesRead = ret / sizeof(int16_t);
iFramesRead = iSamplesRead / channels;
/* Convert in reverse, so we can do it in-place. */
const int16_t *pIn = (int16_t *) buf;
float *pOut = (float *) buf;
for( int i = iSamplesRead-1; i >= 0; --i )
pOut[i] = pIn[i] / 32768.0f;
}
#else
if( ret > 0 )
{
iFramesRead = ret;
int iNumChannels = channels;
for( int iChannel = 0; iChannel < iNumChannels; ++iChannel )
{
const float *pChannelIn = pcm[iChannel];
float *pChannelOut = &buf[iChannel];
for( int i = 0; i < iFramesRead; ++i )
{
*pChannelOut = *pChannelIn;
++pChannelIn;
pChannelOut += iNumChannels;
}
}
}
#endif
}
read_offset += iFramesRead;
buf += iFramesRead * channels;
frames_read += iFramesRead;
iFrames -= iFramesRead;
}
if( !frames_read )
return END_OF_FILE;
return frames_read;
}
static prMALError
SDKImportAudio7(
imStdParms *stdParms,
imFileRef SDKfileRef,
imImportAudioRec7 *audioRec7)
{
prMALError result = malNoError;
// privateData
ImporterLocalRec8H ldataH = reinterpret_cast<ImporterLocalRec8H>(audioRec7->privateData);
stdParms->piSuites->memFuncs->lockHandle(reinterpret_cast<char**>(ldataH));
ImporterLocalRec8Ptr localRecP = reinterpret_cast<ImporterLocalRec8Ptr>( *ldataH );
if(localRecP)
{
assert(audioRec7->position >= 0); // Do they really want contiguous samples?
// for surround channels
// Premiere uses Left, Right, Left Rear, Right Rear, Center, LFE
// Ogg (and Opus) uses Left, Center, Right, Left Read, Right Rear, LFE
// http://www.xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-800004.3.9
static const int surround_swizzle[] = {0, 2, 3, 4, 1, 5};
static const int stereo_swizzle[] = {0, 1, 2, 3, 4, 5}; // no swizzle, actually
const int *swizzle = localRecP->numChannels > 2 ? surround_swizzle : stereo_swizzle;
if(localRecP->fileType == Ogg_filetype && localRecP->vf != NULL)
{
OggVorbis_File &vf = *localRecP->vf;
int seek_err = OV_OK;
if(audioRec7->position >= 0) // otherwise contiguous, but we should be good at the current position
seek_err = ov_pcm_seek(&vf, audioRec7->position);
if(seek_err == OV_OK)
{
int num = 0;
float **pcm_channels;
long samples_needed = audioRec7->size;
long pos = 0;
while(samples_needed > 0 && result == malNoError)
{
int samples = samples_needed;
if(samples > 1024)
samples = 1024; // maximum size this call can read at once
long samples_read = ov_read_float(&vf, &pcm_channels, samples, &num);
if(samples_read >= 0)
{
if(samples_read == 0)
{
// EOF
// Premiere will keep asking me for more and more samples,
// even beyond what I told it I had in SDKFileInfo8->audDuration.
// Just stop and everything will be fine.
break;
}
for(int i=0; i < localRecP->numChannels; i++)
{
memcpy(&audioRec7->buffer[swizzle[i]][pos], pcm_channels[i], samples_read * sizeof(float));
}
samples_needed -= samples_read;
pos += samples_read;
}
else
result = imDecompressionError;
}
}
}
else if(localRecP->fileType == Opus_filetype && localRecP->opus != NULL)
{
const int num_channels = op_channel_count(localRecP->opus, -1);
assert(localRecP->numChannels == num_channels);
int seek_err = OV_OK;
if(audioRec7->position >= 0) // otherwise contiguous, but we should be good at the current position
seek_err = op_pcm_seek(localRecP->opus, audioRec7->position);
if(seek_err == OV_OK)
{
float *pcm_buf = (float *)malloc(sizeof(float) * audioRec7->size * num_channels);
if(pcm_buf != NULL)
{
long samples_needed = audioRec7->size;
long pos = 0;
while(samples_needed > 0 && result == malNoError)
{
float *_pcm = &pcm_buf[pos * num_channels];
int samples_read = op_read_float(localRecP->opus, _pcm, samples_needed * num_channels, NULL);
if(samples_read == 0)
{
// guess we're at the end of the stream
break;
}
else if(samples_read < 0)
{
result = imDecompressionError;
}
else
{
for(int c=0; c < localRecP->numChannels; c++)
{
for(int i=0; i < samples_read; i++)
{
audioRec7->buffer[swizzle[c]][pos + i] = _pcm[(i * num_channels) + c];
}
}
samples_needed -= samples_read;
pos += samples_read;
}
}
free(pcm_buf);
}
}
}
else if(localRecP->fileType == FLAC_filetype && localRecP->flac != NULL)
{
try
{
//localRecP->flac->reset();
assert(audioRec7->position >= 0); // not handling Premiere's continuous reads
assert(localRecP->flac->get_channels() == localRecP->numChannels);
long samples_needed = audioRec7->size;
localRecP->flac->set_buffers(audioRec7->buffer, samples_needed, audioRec7->position);
// Calling seek will cause flac to "write" some audio, of course!
bool sought = localRecP->flac->seek_absolute(audioRec7->position);
bool eof = false;
size_t buffer_position = 0;
if(sought)
{
do{
size_t new_buffer_position = localRecP->flac->get_pos();
int samples_read = (new_buffer_position - buffer_position);
if(samples_read > 0)
{
samples_needed -= samples_read;
}
else
eof = true;
buffer_position = new_buffer_position;
if(samples_needed > 0 && !eof)
{
bool processed = localRecP->flac->process_single();
if(!processed)
samples_needed = 0;
}
}while(samples_needed > 0 && !eof);
}
localRecP->flac->set_buffers(NULL, 0, 0); // don't trust libflac not to write at inopportune times
}
catch(...)
{
result = imDecompressionError;
}
}
}
stdParms->piSuites->memFuncs->unlockHandle(reinterpret_cast<char**>(ldataH));
assert(result == malNoError);
return result;
}
static PyObject*
VorbisDecoder_read(decoders_VorbisDecoder *self, PyObject *args) {
int current_bitstream;
long samples_read;
float **pcm_channels;
if (self->closed) {
PyErr_SetString(PyExc_ValueError, "stream is closed");
return NULL;
}
samples_read = ov_read_float(&(self->vorbisfile),
&pcm_channels,
4096,
¤t_bitstream);
if (samples_read >= 0) {
/*convert floating point samples to integer-based ones*/
pcm_FrameList *framelist;
int *samples;
int c;
if (samples_read == 0) {
if (self->vorbisfile.os.e_o_s == 0) {
/*EOF encountered without EOF being marked in stream*/
PyErr_SetString(PyExc_IOError,
"I/O error reading from Ogg stream");
return NULL;
} else {
return empty_FrameList(self->audiotools_pcm,
self->channel_count,
BITS_PER_SAMPLE);
}
}
framelist = new_FrameList(self->audiotools_pcm,
self->channel_count,
BITS_PER_SAMPLE,
(unsigned)samples_read);
samples = framelist->samples;
for (c = 0; c < self->channel_count; c++) {
int channel[samples_read];
float_to_int_converter(BITS_PER_SAMPLE)(
(unsigned)samples_read,
pcm_channels[c],
channel);
put_channel_data(samples,
c,
self->channel_count,
(unsigned)samples_read,
channel);
}
/*reorder channels to .wav order if necessary*/
switch (self->channel_count) {
case 1:
case 2:
default:
/*no change*/
break;
case 3:
/*fL fC fR -> fL fR fC*/
swap_channel_data(samples, 1, 2,
self->channel_count, (unsigned)samples_read);
break;
case 4:
/*fL fR bL bR -> fL fR bL bR*/
/*no change*/
break;
case 5:
/*fL fC fR bL bR -> fL fR fC bL bR*/
swap_channel_data(samples, 1, 2,
self->channel_count, (unsigned)samples_read);
break;
case 6:
/*fL fC fR bL bR LFE -> fL fR fC bL bR LFE*/
swap_channel_data(samples, 1, 2,
self->channel_count, (unsigned)samples_read);
/*fL fR fC bL bR LFE -> fL fR fC LFE bR bL*/
swap_channel_data(samples, 3, 5,
self->channel_count, (unsigned)samples_read);
/*fL fR fC LFE bR bL -> fL fR fC LFE bL bR*/
swap_channel_data(samples, 4, 5,
self->channel_count, (unsigned)samples_read);
break;
case 7:
/*fL fC fR sL sR bC LFE -> fL fR fC sL sR bC LFE*/
swap_channel_data(samples, 1, 2,
self->channel_count, (unsigned)samples_read);
/*fL fR fC sL sR bC LFE -> fL fR fC LFE sR bC sL*/
swap_channel_data(samples, 3, 6,
self->channel_count, (unsigned)samples_read);
/*fL fR fC LFE sR bC sL -> fL fR fC LFE bC sR sL*/
swap_channel_data(samples, 4, 5,
self->channel_count, (unsigned)samples_read);
/*fL fR fC LFE bC sR sL -> fL fR fC LFE bC sL sR*/
swap_channel_data(samples, 5, 6,
self->channel_count, (unsigned)samples_read);
break;
case 8:
/*fL fC fR sL sR bL bR LFE -> fL fR fC sL sR bL bR LFE*/
swap_channel_data(samples, 1, 2,
self->channel_count, (unsigned)samples_read);
/*fL fR fC sL sR bL bR LFE -> fL fR fC LFE sR bL bR sL*/
swap_channel_data(samples, 3, 6,
self->channel_count, (unsigned)samples_read);
/*fL fR fC LFE sR bL bR sL -> fL fR fC LFE bL sR bR sL*/
swap_channel_data(samples, 4, 5,
self->channel_count, (unsigned)samples_read);
/*fL fR fC LFE bL sR bR sL -> fL fR fC LFE bL bR sR sL*/
swap_channel_data(samples, 5, 6,
self->channel_count, (unsigned)samples_read);
/*fL fR fC LFE bL bR sR sL -> fL fR fC LFE bL bR sL sR*/
swap_channel_data(samples, 6, 7,
self->channel_count, (unsigned)samples_read);
break;
}
return (PyObject*)framelist;
} else {
switch (samples_read) {
case OV_HOLE:
PyErr_SetString(PyExc_ValueError, "data interruption detected");
return NULL;
case OV_EBADLINK:
PyErr_SetString(PyExc_ValueError, "invalid stream section");
return NULL;
case OV_EINVAL:
PyErr_SetString(PyExc_ValueError, "initial file headers corrupt");
return NULL;
default:
PyErr_SetString(PyExc_ValueError, "unspecified error");
return NULL;
}
}
}
int FileVorbis::read_samples_float(float *buffer, int64_t len)
{
if(!fd) return 0;
// printf("FileVorbis::read_samples 1 %d %d %d %d\n",
// history_start,
// history_size,
// file->current_sample,
// len);
float **vorbis_output;
int bitstream;
int accumulation = 0;
//printf("FileVorbis::read_samples 1\n");
int decode_start = 0;
int decode_len = 0;
if(len > 0x100000)
{
eprintf("FileVorbis::read_samples max samples=%d\n", HISTORY_MAX);
return 1;
}
if(!pcm_history_float)
{
pcm_history_float = new float*[asset->channels];
for(int i = 0; i < asset->channels; i++)
pcm_history_float[i] = new float[HISTORY_MAX];
history_start = 0;
history_size = 0;
}
// Restart history. Don't bother shifting history back.
if(file->current_sample < history_start ||
file->current_sample > history_start + history_size)
{
history_size = 0;
history_start = file->current_sample;
decode_start = file->current_sample;
decode_len = len;
}
else
// Shift history forward to make room for new samples
if(file->current_sample + len > history_start + history_size)
{
if(file->current_sample + len > history_start + HISTORY_MAX)
{
int diff = file->current_sample + len - (history_start + HISTORY_MAX);
for(int i = 0; i < asset->channels; i++)
{
float *temp = pcm_history_float[i];
// for(int j = 0; j < HISTORY_MAX - diff; j++)
// {
// temp[j] = temp[j + diff];
// }
bcopy(temp, temp + diff, (HISTORY_MAX - diff) * sizeof(float));
}
history_start += diff;
history_size -= diff;
}
// Decode more data
decode_start = history_start + history_size;
decode_len = file->current_sample + len - (history_start + history_size);
}
// Fill history buffer
if(history_start + history_size != ov_pcm_tell(&vf))
{
//printf("FileVorbis::read_samples %d %d\n", history_start + history_size, ov_pcm_tell(&vf));
ov_pcm_seek(&vf, history_start + history_size);
}
while(accumulation < decode_len)
{
int result = ov_read_float(&vf,
&vorbis_output,
decode_len - accumulation,
&bitstream);
//printf("FileVorbis::read_samples 1 %d %d %d\n", result, len, accumulation);
if(!result) break;
for(int i = 0; i < asset->channels; i++)
{
float *output = pcm_history_float[i] + history_size;
float *input = vorbis_output[i];
// for(int j = 0; j < result; j++)
// output[j] = input[j];
bcopy(input, output, result * sizeof(float));
}
history_size += result;
accumulation += result;
}
// printf("FileVorbis::read_samples 1 %d %d\n",
// file->current_sample,
// history_start);
float *input = pcm_history_float[file->current_channel] +
file->current_sample -
history_start;
// for(int i = 0; i < len; i++)
// buffer[i] = input[i];
bcopy(input, buffer, len * sizeof(float));
// printf("FileVorbis::read_samples 2 %d %d %d %d\n",
// history_start,
// history_size,
// file->current_sample,
// len);
return 0;
}
static gboolean vorbis_play (const gchar * filename, VFSFile * file)
{
if (file == NULL)
return FALSE;
vorbis_info *vi;
OggVorbis_File vf;
gint last_section = -1;
ReplayGainInfo rg_info;
gfloat pcmout[PCM_BUFSIZE*sizeof(float)], **pcm;
gint bytes, channels, samplerate, br;
gchar * title = NULL;
memset(&vf, 0, sizeof(vf));
gboolean error = FALSE;
if (ov_open_callbacks (file, & vf, NULL, 0, vfs_is_streaming (file) ?
vorbis_callbacks_stream : vorbis_callbacks) < 0)
{
error = TRUE;
goto play_cleanup;
}
vi = ov_info(&vf, -1);
if (vi->channels > 2)
goto play_cleanup;
br = vi->bitrate_nominal;
channels = vi->channels;
samplerate = vi->rate;
aud_input_set_bitrate (br);
if (!aud_input_open_audio(FMT_FLOAT, samplerate, channels)) {
error = TRUE;
goto play_cleanup;
}
vorbis_update_replaygain(&vf, &rg_info);
aud_input_set_gain (& rg_info);
/*
* Note that chaining changes things here; A vorbis file may
* be a mix of different channels, bitrates and sample rates.
* You can fetch the information for any section of the file
* using the ov_ interface.
*/
while (! aud_input_check_stop ())
{
int seek_value = aud_input_check_seek();
if (seek_value >= 0 && ov_time_seek (& vf, (double) seek_value / 1000) < 0)
{
fprintf (stderr, "vorbis: seek failed\n");
error = TRUE;
break;
}
gint current_section = last_section;
bytes = ov_read_float(&vf, &pcm, PCM_FRAMES, ¤t_section);
if (bytes == OV_HOLE)
continue;
if (bytes <= 0)
break;
bytes = vorbis_interleave_buffer (pcm, bytes, channels, pcmout);
{ /* try to detect when metadata has changed */
vorbis_comment * comment = ov_comment (& vf, -1);
const gchar * new_title = (comment == NULL) ? NULL :
vorbis_comment_query (comment, "title", 0);
if (new_title != NULL && (title == NULL || strcmp (title, new_title)))
{
g_free (title);
title = g_strdup (new_title);
aud_input_set_tuple (get_tuple_for_vorbisfile (& vf,
filename));
}
}
if (current_section != last_section)
{
/*
* The info struct is different in each section. vf
* holds them all for the given bitstream. This
* requests the current one
*/
vi = ov_info(&vf, -1);
if (vi->channels > 2)
goto stop_processing;
if (vi->rate != samplerate || vi->channels != channels)
{
samplerate = vi->rate;
channels = vi->channels;
if (!aud_input_open_audio(FMT_FLOAT, vi->rate, vi->channels)) {
error = TRUE;
goto stop_processing;
}
vorbis_update_replaygain(&vf, &rg_info);
aud_input_set_gain (& rg_info); /* audio reopened */
}
}
aud_input_write_audio (pcmout, bytes);
stop_processing:
if (current_section != last_section)
{
aud_input_set_bitrate (br);
last_section = current_section;
}
} /* main loop */
play_cleanup:
ov_clear(&vf);
g_free (title);
return ! error;
}
/* public */
static void
vorbis_stream_decode(struct decoder *decoder,
struct input_stream *input_stream)
{
GError *error = NULL;
if (ogg_codec_detect(decoder, input_stream) != OGG_CODEC_VORBIS)
return;
/* rewind the stream, because ogg_codec_detect() has
moved it */
input_stream_lock_seek(input_stream, 0, SEEK_SET, NULL);
struct vorbis_input_stream vis;
OggVorbis_File vf;
if (!vorbis_is_open(&vis, &vf, decoder, input_stream))
return;
const vorbis_info *vi = ov_info(&vf, -1);
if (vi == NULL) {
g_warning("ov_info() has failed");
return;
}
struct audio_format audio_format;
if (!audio_format_init_checked(&audio_format, vi->rate,
#ifdef HAVE_TREMOR
SAMPLE_FORMAT_S16,
#else
SAMPLE_FORMAT_FLOAT,
#endif
vi->channels, &error)) {
g_warning("%s", error->message);
g_error_free(error);
return;
}
float total_time = ov_time_total(&vf, -1);
if (total_time < 0)
total_time = 0;
decoder_initialized(decoder, &audio_format, vis.seekable, total_time);
enum decoder_command cmd = decoder_get_command(decoder);
#ifdef HAVE_TREMOR
char buffer[4096];
#else
float buffer[2048];
const int frames_per_buffer =
G_N_ELEMENTS(buffer) / audio_format.channels;
const unsigned frame_size = sizeof(buffer[0]) * audio_format.channels;
#endif
int prev_section = -1;
unsigned kbit_rate = 0;
do {
if (cmd == DECODE_COMMAND_SEEK) {
double seek_where = decoder_seek_where(decoder);
if (0 == ov_time_seek_page(&vf, seek_where)) {
decoder_command_finished(decoder);
} else
decoder_seek_error(decoder);
}
int current_section;
#ifdef HAVE_TREMOR
long nbytes = ov_read(&vf, buffer, sizeof(buffer),
VORBIS_BIG_ENDIAN, 2, 1,
¤t_section);
#else
float **per_channel;
long nframes = ov_read_float(&vf, &per_channel,
frames_per_buffer,
¤t_section);
long nbytes = nframes;
if (nframes > 0) {
vorbis_interleave(buffer,
(const float*const*)per_channel,
nframes, audio_format.channels);
nbytes *= frame_size;
}
#endif
if (nbytes == OV_HOLE) /* bad packet */
nbytes = 0;
else if (nbytes <= 0)
/* break on EOF or other error */
break;
if (current_section != prev_section) {
vi = ov_info(&vf, -1);
if (vi == NULL) {
g_warning("ov_info() has failed");
break;
}
if (vi->rate != (long)audio_format.sample_rate ||
vi->channels != (int)audio_format.channels) {
/* we don't support audio format
change yet */
g_warning("audio format change, stopping here");
break;
}
char **comments = ov_comment(&vf, -1)->user_comments;
vorbis_send_comments(decoder, input_stream, comments);
struct replay_gain_info rgi;
if (vorbis_comments_to_replay_gain(&rgi, comments))
decoder_replay_gain(decoder, &rgi);
prev_section = current_section;
}
long test = ov_bitrate_instant(&vf);
if (test > 0)
kbit_rate = test / 1000;
cmd = decoder_data(decoder, input_stream,
buffer, nbytes,
kbit_rate);
} while (cmd != DECODE_COMMAND_STOP);
ov_clear(&vf);
}
/*
====================
idSampleDecoderLocal::DecodeOGG
====================
*/
int idSampleDecoderLocal::DecodeOGG( idSoundSample *sample, int sampleOffset44k, int sampleCount44k, float *dest ) {
int readSamples, totalSamples;
int shift = 22050 / sample->objectInfo.nSamplesPerSec;
int sampleOffset = sampleOffset44k >> shift;
int sampleCount = sampleCount44k >> shift;
// open OGG file if not yet opened
if ( lastSample == NULL ) {
// make sure there is enough space for another decoder
if ( decoderMemoryAllocator.GetFreeBlockMemory() < MIN_OGGVORBIS_MEMORY ) {
return 0;
}
if ( sample->nonCacheData == NULL ) {
assert( false ); // this should never happen
failed = true;
return 0;
}
file.SetData( (const char *)sample->nonCacheData, sample->objectMemSize );
if ( ov_openFile( &file, &ogg ) < 0 ) {
failed = true;
return 0;
}
lastFormat = WAVE_FORMAT_TAG_OGG;
lastSample = sample;
}
// seek to the right offset if necessary
if ( sampleOffset != lastSampleOffset ) {
if ( ov_pcm_seek( &ogg, sampleOffset / sample->objectInfo.nChannels ) != 0 ) {
failed = true;
return 0;
}
}
lastSampleOffset = sampleOffset;
// decode OGG samples
totalSamples = sampleCount;
readSamples = 0;
do {
float **samples;
int ret = ov_read_float( &ogg, &samples, totalSamples / sample->objectInfo.nChannels, &ogg.stream );
if ( ret == 0 ) {
failed = true;
break;
}
if ( ret < 0 ) {
failed = true;
return 0;
}
ret *= sample->objectInfo.nChannels;
SIMDProcessor->UpSampleOGGTo44kHz( dest + ( readSamples << shift ), samples, ret, sample->objectInfo.nSamplesPerSec, sample->objectInfo.nChannels );
readSamples += ret;
totalSamples -= ret;
} while( totalSamples > 0 );
lastSampleOffset += readSamples;
return ( readSamples << shift );
}
static int audiosourceogg_Read(struct audiosource* source, char* buffer, unsigned int bytes) {
struct audiosourceogg_internaldata* idata =
source->internaldata;
if (idata->eof) {
return -1;
}
// open up ogg file if we don't have one yet
if (!idata->vorbisopened) {
if (!audiosourceogg_InitOgg(source)) {
idata->eof = 1;
idata->returnerroroneof = 1;
source->samplerate = -1;
source->channels = -1;
return -1;
}
vorbis_info* vi = ov_info(&idata->vorbisfile, -1);
source->samplerate = vi->rate;
source->channels = vi->channels;
if (source->channels < 1 || source->channels > 2) {
// incompatible channel count
idata->eof = 1;
idata->returnerroroneof = 1;
source->samplerate = -1;
source->channels = -1;
ov_clear(&idata->vorbisfile);
return -1;
}
idata->vorbisopened = 1;
}
// if no bytes were requested, don't do anything
if (bytes == 0) {
return 0;
}
// read bytes
audiosourceogg_ReadUndecoded(idata);
unsigned int byteswritten = 0;
while (bytes > 0) {
// see how much we want to decode now
unsigned int decodeamount = bytes;
if (decodeamount > sizeof(idata->decodedbuf) - idata->decodedbytes) {
decodeamount = sizeof(idata->decodedbuf) - idata->decodedbytes;
}
// decode from encoded fetched bytes
if (source->channels == 0) { // this is invalid
idata->returnerroroneof = 1;
idata->eof = 1;
return -1;
}
unsigned int decodesamples = decodeamount/(source->channels * sizeof(float));
if (decodesamples > 0) {
// because of possible divison rounding issues,
// try one less sample. we will add more in the next check
// if not all bytes requested are covered
decodesamples--;
}
while (
decodesamples * (source->channels * sizeof(float)) < decodeamount
&&
(decodesamples+1) * (source->channels * sizeof(float)) <= (sizeof(idata->decodedbuf) - idata->decodedbytes)
) {
// make sure we cover all desired bytes even for half-sample requests or something
decodesamples++;
}
while (!idata->vorbiseof && decodesamples > 0) {
float **pcm;
long ret = ov_read_float(&idata->vorbisfile, &pcm, decodesamples, &idata->vbitstream);
if (ret < 0) {
if (ret == OV_HOLE) {
// a "jump" or temporary decoding problem - ignore this
continue;
}
// some vorbis error we want to report
idata->returnerroroneof = 1;
idata->vorbiseof = 1;
} else {
if (ret > 0) {
// success
// We will walk through all bytes now:
// (unavoidable since we need to interleave them)
unsigned int i = 0;
while (i < (unsigned int)ret) {
unsigned int j = 0;
while (j < source->channels) {
memcpy(idata->decodedbuf + idata->decodedbytes, &pcm[j][i], sizeof(float));
idata->decodedbytes += sizeof(float);
j++;
}
i++;
}
} else {
// regular eof
idata->vorbiseof = 1;
}
}
break;
}
// check how much we want and can copy
unsigned int amount = idata->decodedbytes;
if (amount > bytes) {
// never copy more than we want
amount = bytes;
}
// vorbis end of file
if (amount == 0) {
if (byteswritten == 0) {
idata->eof = 1;
if (idata->returnerroroneof) {
return -1;
}
return 0;
} else {
return byteswritten;
}
}
// output bytes
memcpy(buffer, idata->decodedbuf, amount);
byteswritten += amount;
buffer += amount;
idata->decodedbytes -= amount;
bytes -= amount;
// move remaining contents in our decode buffer
if (amount > 0 && idata->decodedbytes > 0) {
memmove(idata->decodedbuf, idata->decodedbuf + amount, sizeof(idata->decodedbuf) - amount);
}
}
return byteswritten;
}
static gboolean vorbis_play (InputPlayback * playback, const gchar * filename,
VFSFile * file, gint start_time, gint stop_time, gboolean pause)
{
if (file == NULL)
return FALSE;
vorbis_info *vi;
OggVorbis_File vf;
gint last_section = -1;
ReplayGainInfo rg_info;
gfloat pcmout[PCM_BUFSIZE*sizeof(float)], **pcm;
gint bytes, channels, samplerate, br;
gchar * title = NULL;
seek_value = (start_time > 0) ? start_time : -1;
stop_flag = FALSE;
memset(&vf, 0, sizeof(vf));
gboolean error = FALSE;
if (ov_open_callbacks (file, & vf, NULL, 0, vfs_is_streaming (file) ?
vorbis_callbacks_stream : vorbis_callbacks) < 0)
{
error = TRUE;
goto play_cleanup;
}
vi = ov_info(&vf, -1);
if (vi->channels > 2)
goto play_cleanup;
br = vi->bitrate_nominal;
channels = vi->channels;
samplerate = vi->rate;
playback->set_params (playback, br, samplerate, channels);
if (!playback->output->open_audio(FMT_FLOAT, samplerate, channels)) {
error = TRUE;
goto play_cleanup;
}
playback->output->flush (start_time);
if (pause)
playback->output->pause (TRUE);
vorbis_update_replaygain(&vf, &rg_info);
playback->output->set_replaygain_info (& rg_info);
playback->set_pb_ready(playback);
/*
* Note that chaining changes things here; A vorbis file may
* be a mix of different channels, bitrates and sample rates.
* You can fetch the information for any section of the file
* using the ov_ interface.
*/
while (1)
{
if (stop_time >= 0 && playback->output->written_time () >= stop_time)
goto DRAIN;
pthread_mutex_lock (& seek_mutex);
if (stop_flag)
{
pthread_mutex_unlock (& seek_mutex);
break;
}
if (seek_value >= 0)
{
ov_time_seek (& vf, (double) seek_value / 1000);
playback->output->flush (seek_value);
seek_value = -1;
}
pthread_mutex_unlock (& seek_mutex);
gint current_section = last_section;
bytes = ov_read_float(&vf, &pcm, PCM_FRAMES, ¤t_section);
if (bytes == OV_HOLE)
continue;
if (bytes <= 0)
{
DRAIN:
break;
}
bytes = vorbis_interleave_buffer (pcm, bytes, channels, pcmout);
{ /* try to detect when metadata has changed */
vorbis_comment * comment = ov_comment (& vf, -1);
const gchar * new_title = (comment == NULL) ? NULL :
vorbis_comment_query (comment, "title", 0);
if (new_title != NULL && (title == NULL || strcmp (title, new_title)))
{
g_free (title);
title = g_strdup (new_title);
playback->set_tuple (playback, get_tuple_for_vorbisfile (& vf,
filename));
}
}
if (current_section != last_section)
{
/*
* The info struct is different in each section. vf
* holds them all for the given bitstream. This
* requests the current one
*/
vi = ov_info(&vf, -1);
if (vi->channels > 2)
goto stop_processing;
if (vi->rate != samplerate || vi->channels != channels)
{
samplerate = vi->rate;
channels = vi->channels;
if (!playback->output->open_audio(FMT_FLOAT, vi->rate, vi->channels)) {
error = TRUE;
goto stop_processing;
}
playback->output->flush(ov_time_tell(&vf) * 1000);
vorbis_update_replaygain(&vf, &rg_info);
playback->output->set_replaygain_info (& rg_info); /* audio reopened */
}
}
playback->output->write_audio (pcmout, bytes);
stop_processing:
if (current_section != last_section)
{
playback->set_params (playback, br, samplerate, channels);
last_section = current_section;
}
} /* main loop */
pthread_mutex_lock (& seek_mutex);
stop_flag = TRUE;
pthread_mutex_unlock (& seek_mutex);
play_cleanup:
ov_clear(&vf);
g_free (title);
return ! error;
}
//==============================================================================
bool readSamples (int** destSamples, int numDestChannels, int startOffsetInDestBuffer,
int64 startSampleInFile, int numSamples) override
{
while (numSamples > 0)
{
auto numAvailable = (int) (reservoirStart + samplesInReservoir - startSampleInFile);
if (startSampleInFile >= reservoirStart && numAvailable > 0)
{
// got a few samples overlapping, so use them before seeking..
auto numToUse = jmin (numSamples, numAvailable);
for (int i = jmin (numDestChannels, reservoir.getNumChannels()); --i >= 0;)
if (destSamples[i] != nullptr)
memcpy (destSamples[i] + startOffsetInDestBuffer,
reservoir.getReadPointer (i, (int) (startSampleInFile - reservoirStart)),
sizeof (float) * (size_t) numToUse);
startSampleInFile += numToUse;
numSamples -= numToUse;
startOffsetInDestBuffer += numToUse;
if (numSamples == 0)
break;
}
if (startSampleInFile < reservoirStart
|| startSampleInFile + numSamples > reservoirStart + samplesInReservoir)
{
// buffer miss, so refill the reservoir
reservoirStart = jmax (0, (int) startSampleInFile);
samplesInReservoir = reservoir.getNumSamples();
if (reservoirStart != (int) ov_pcm_tell (&ovFile))
ov_pcm_seek (&ovFile, reservoirStart);
int bitStream = 0;
int offset = 0;
int numToRead = samplesInReservoir;
while (numToRead > 0)
{
float** dataIn = nullptr;
auto samps = ov_read_float (&ovFile, &dataIn, numToRead, &bitStream);
if (samps <= 0)
break;
jassert (samps <= numToRead);
for (int i = jmin ((int) numChannels, reservoir.getNumChannels()); --i >= 0;)
memcpy (reservoir.getWritePointer (i, offset), dataIn[i], sizeof (float) * (size_t) samps);
numToRead -= samps;
offset += samps;
}
if (numToRead > 0)
reservoir.clear (offset, numToRead);
}
}
if (numSamples > 0)
{
for (int i = numDestChannels; --i >= 0;)
if (destSamples[i] != nullptr)
zeromem (destSamples[i] + startOffsetInDestBuffer, sizeof (int) * (size_t) numSamples);
}
return true;
}
ReadableSampleFrames SoundSourceOggVorbis::readSampleFramesClamped(
WritableSampleFrames writableSampleFrames) {
const SINT firstFrameIndex = writableSampleFrames.frameIndexRange().start();
if (m_curFrameIndex != firstFrameIndex) {
const int seekResult = ov_pcm_seek(&m_vf, firstFrameIndex);
if (seekResult == 0) {
m_curFrameIndex = firstFrameIndex;
} else {
kLogger.warning() << "Failed to seek file:" << seekResult;
const ogg_int64_t pcmOffset = ov_pcm_tell(&m_vf);
if (0 <= pcmOffset) {
m_curFrameIndex = pcmOffset;
} else {
// Reset to EOF
m_curFrameIndex = frameIndexMax();
}
// Abort
return ReadableSampleFrames(
IndexRange::between(
m_curFrameIndex,
m_curFrameIndex));
}
}
DEBUG_ASSERT(m_curFrameIndex == firstFrameIndex);
const SINT numberOfFramesTotal = writableSampleFrames.frameLength();
CSAMPLE* pSampleBuffer = writableSampleFrames.writableData();
SINT numberOfFramesRemaining = numberOfFramesTotal;
while (0 < numberOfFramesRemaining) {
float** pcmChannels;
int currentSection;
// Use 'long' here, because ov_read_float() returns this type.
// This is an exception from the rule not to any types with
// differing sizes on different platforms.
// https://bugs.launchpad.net/mixxx/+bug/1094143
const long readResult = ov_read_float(&m_vf, &pcmChannels,
numberOfFramesRemaining, ¤tSection);
if (0 < readResult) {
m_curFrameIndex += readResult;
if (pSampleBuffer) {
switch (channelCount()) {
case 1:
for (long i = 0; i < readResult; ++i) {
*pSampleBuffer++ = pcmChannels[0][i];
}
break;
case 2:
for (long i = 0; i < readResult; ++i) {
*pSampleBuffer++ = pcmChannels[0][i];
*pSampleBuffer++ = pcmChannels[1][i];
}
break;
default:
for (long i = 0; i < readResult; ++i) {
for (SINT j = 0; j < channelCount(); ++j) {
*pSampleBuffer++ = pcmChannels[j][i];
}
}
}
}
numberOfFramesRemaining -= readResult;
} else {
kLogger.warning() << "Failed to read from file:" << readResult;
break; // abort
}
}
DEBUG_ASSERT(isValidFrameIndex(m_curFrameIndex));
DEBUG_ASSERT(numberOfFramesTotal >= numberOfFramesRemaining);
const SINT numberOfFrames = numberOfFramesTotal - numberOfFramesRemaining;
return ReadableSampleFrames(
IndexRange::forward(firstFrameIndex, numberOfFrames),
SampleBuffer::ReadableSlice(
writableSampleFrames.writableData(),
std::min(writableSampleFrames.writableLength(), frames2samples(numberOfFrames))));
}
// Read
//
// Returns number of bytes actually read.
//
// Returns -1 if there is nothing more to be read. This function can return 0, since
// sometimes the amount of bytes requested is too small for the ACM decompression to
// locate a suitable block
int WaveFile::Read(ubyte *pbDest, uint cbSize, int service)
{
void *dest_buf=NULL, *uncompressed_wave_data;
int rc, uncompressed_bytes_written, section, last_section = -1, byte_order = 0;
uint src_bytes_used, convert_len, num_bytes_desired=0, num_bytes_read;
// nprintf(("Alan","Reqeusted: %d\n", cbSize));
#if BYTE_ORDER == BIG_ENDIAN
byte_order = 1;
#endif
if ( service ) {
uncompressed_wave_data = Wavedata_service_buffer;
} else {
uncompressed_wave_data = Wavedata_load_buffer;
}
switch ( m_wave_format ) {
case WAVE_FORMAT_PCM:
num_bytes_desired = cbSize;
dest_buf = pbDest;
break;
case WAVE_FORMAT_ADPCM: {
if ( !m_hStream_open ) {
if ( !ACM_stream_open(m_pwfmt_original, &m_wfxDest, (void**)&m_hStream, m_bits_per_sample_uncompressed) ) {
m_hStream_open = 1;
} else {
Int3();
}
}
num_bytes_desired = cbSize;
if ( service ) {
dest_buf = Compressed_service_buffer;
} else {
dest_buf = Compressed_buffer;
}
if ( num_bytes_desired <= 0 ) {
num_bytes_desired = 0;
// nprintf(("Alan","No bytes required for ADPCM time interval\n"));
} else {
num_bytes_desired = ACM_query_source_size((void*)m_hStream, cbSize);
// nprintf(("Alan","Num bytes desired: %d\n", num_bytes_desired));
}
break;
}
case OGG_FORMAT_VORBIS:
num_bytes_desired = cbSize;
dest_buf = pbDest;
break;
case WAVE_FORMAT_IEEE_FLOAT: {
num_bytes_desired = cbSize;
if (m_wfmt.wBitsPerSample == 32) {
dest_buf = pbDest;
} else {
if (service) {
dest_buf = Compressed_service_buffer;
} else {
dest_buf = Compressed_buffer;
}
}
break;
}
default:
nprintf(("SOUND", "SOUND => Not supporting %d format for playing wave files\n", m_wave_format));
Int3();
break;
} // end switch
num_bytes_read = 0;
convert_len = 0;
src_bytes_used = 0;
// read data from disk
if ( m_data_bytes_left <= 0 ) {
num_bytes_read = 0;
uncompressed_bytes_written = 0;
return -1;
}
if ( (m_data_bytes_left > 0) && (num_bytes_desired > 0) ) {
int actual_read = 0;
if ( num_bytes_desired <= (uint)m_data_bytes_left ) {
num_bytes_read = num_bytes_desired;
}
else {
num_bytes_read = m_data_bytes_left;
}
// OGG reading is special
if ( m_wave_format == OGG_FORMAT_VORBIS ) {
int sign = (m_wfmt.wBitsPerSample == 8) ? 0 : 1;
int sample_size = sizeof(float) * m_wfmt.nChannels;
while ( !m_abort_next_read && ((uint)actual_read < num_bytes_read)) {
float **pcm = NULL;
if (m_wfmt.wBitsPerSample == 32) {
rc = ov_read_float(&m_snd_info.vorbis_file, &pcm, (num_bytes_read - actual_read) / sample_size, §ion);
} else {
rc = ov_read(&m_snd_info.vorbis_file, (char *)dest_buf + actual_read, num_bytes_read - actual_read, byte_order, m_wfmt.wBitsPerSample / 8, sign, §ion);
}
// fail if the bitstream changes, shouldn't get this far if that's the case though
if ((last_section != -1) && (last_section != section)) {
mprintf(("AUDIOSTR => OGG reading error: We don't handle bitstream changes!\n"));
goto READ_ERROR;
}
if ( rc > 0 ) {
if (m_wfmt.wBitsPerSample == 32) {
float *out_p = (float*)((ubyte*)dest_buf + actual_read);
for (int i = 0; i < rc; i++) {
for (int j = 0; j < m_wfmt.nChannels; j++) {
*out_p++ = pcm[j][i];
}
}
actual_read += (rc * m_wfmt.nBlockAlign);
} else {
actual_read += rc;
}
last_section = section;
} else if ( rc == 0 ) {
break;
} else if ( rc < 0 ) {
if ( dbg_print_ogg_error(m_wFilename, rc) ) {
// must be a fatal error
goto READ_ERROR;
} else {
// not fatal, just continue on
break;
}
}
}
}
// IEEE FLOAT is special too, downsampling can give short buffers
else if (m_wave_format == WAVE_FORMAT_IEEE_FLOAT) {
while ( !m_abort_next_read && ((uint)actual_read < num_bytes_read) ) {
rc = mmioRead(m_snd_info.cfp, (char *)dest_buf, num_bytes_read);
if (rc <= 0) {
break;
}
#if BYTE_ORDER == BIG_ENDIAN
// need to byte-swap before any later conversions
float *swap_tmp;
for (int i = 0; i < rc; i += sizeof(float)) {
swap_tmp = (float *)((ubyte*)dest_buf + i);
*swap_tmp = INTEL_FLOAT(swap_tmp);
}
#endif
if (m_wfmt.wBitsPerSample == 32) {
actual_read = rc;
} else if (m_wfmt.wBitsPerSample == 16) {
float *in_p = (float*)dest_buf;
short *out_p = (short*)((ubyte*)uncompressed_wave_data + actual_read);
int end = rc / sizeof(float);
for (int i = 0; i < end; i++) {
int i_val = (int)(in_p[i] * 32767.0f + 0.5f);
CLAMP(i_val, -32768, 32767);
*out_p++ = (short)i_val;
}
actual_read += (rc >> 1);
} else {
Assert( m_wfmt.wBitsPerSample == 8 );
float *in_p = (float*)dest_buf;
ubyte *out_p = (ubyte*)((ubyte*)uncompressed_wave_data + actual_read);
int end = num_bytes_read / sizeof(float);
for (int i = 0; i < end; i++) {
int i_val = (int)(in_p[i] * 127.0f + 0.5f) + 128;
CLAMP(i_val, 0, 255);
*out_p++ = (ubyte)i_val;
}
actual_read += (rc >> 2);
}
}
