OggFLAC_API FLAC__bool OggFLAC__seekable_stream_encoder_set_streamable_subset(OggFLAC__SeekableStreamEncoder *encoder, FLAC__bool value)
{
FLAC__ASSERT(0 != encoder);
FLAC__ASSERT(0 != encoder->private_);
FLAC__ASSERT(0 != encoder->protected_);
FLAC__ASSERT(0 != encoder->private_->FLAC_stream_encoder);
if(encoder->protected_->state != OggFLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED)
return false;
return FLAC__stream_encoder_set_streamable_subset(encoder->private_->FLAC_stream_encoder, value);
}
static void metadata_cb(const FLAC__StreamDecoder *, const FLAC__StreamMetadata *metadata, void *client_data)
{
FLACClientData &client = *static_cast<FLACClientData *>(client_data);
if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO && metadata->data.stream_info.total_samples != 0)
{
if(!sampleRate) sampleRate = metadata->data.stream_info.sample_rate;
client.channels = metadata->data.stream_info.channels;
if(!FLAC__format_sample_rate_is_subset(sampleRate))
{
// FLAC only supports 10 Hz granularity for frequencies above 65535 Hz if the streamable subset is chosen.
FLAC__stream_encoder_set_streamable_subset(client.encoder, false);
}
FLAC__stream_encoder_set_channels(client.encoder, client.channels);
FLAC__stream_encoder_set_bits_per_sample(client.encoder, metadata->data.stream_info.bits_per_sample);
FLAC__stream_encoder_set_sample_rate(client.encoder, sampleRate <= FLAC__MAX_SAMPLE_RATE ? sampleRate : FLAC__MAX_SAMPLE_RATE);
FLAC__stream_encoder_set_total_samples_estimate(client.encoder, metadata->data.stream_info.total_samples);
FLAC__stream_encoder_set_compression_level(client.encoder, 8);
} else if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT)
{
for(FLAC__uint32 i = 0; i < metadata->data.vorbis_comment.num_comments; i++)
{
const char *tag = reinterpret_cast<const char *>(metadata->data.vorbis_comment.comments[i].entry);
const FLAC__uint32 length = metadata->data.vorbis_comment.comments[i].length;
if(length > 11 && !_strnicmp(tag, "SAMPLERATE=", 11))
{
sampleRate = atoi(tag + 11);
}
}
client.metadata.push_back(FLAC__metadata_object_clone(metadata));
} else
{
client.metadata.push_back(FLAC__metadata_object_clone(metadata));
}
}
void CompressionTool::encodeRaw(const char *rawData, int length, int samplerate, const char *outname, AudioFormat compmode) {
print(" - len=%ld, ch=%d, rate=%d, %dbits", length, (rawAudioType.isStereo ? 2 : 1), samplerate, rawAudioType.bitsPerSample);
#ifdef USE_VORBIS
if (compmode == AUDIO_VORBIS) {
char outputString[256] = "";
int numChannels = (rawAudioType.isStereo ? 2 : 1);
int totalSamples = length / ((rawAudioType.bitsPerSample / 8) * numChannels);
int samplesLeft = totalSamples;
int eos = 0;
int totalBytes = 0;
vorbis_info vi;
vorbis_comment vc;
vorbis_dsp_state vd;
vorbis_block vb;
ogg_stream_state os;
ogg_page og;
ogg_packet op;
ogg_packet header;
ogg_packet header_comm;
ogg_packet header_code;
Common::File outputOgg(outname, "wb");
vorbis_info_init(&vi);
if (oggparms.nominalBitr > 0) {
int result = 0;
/* Input is in kbps, function takes bps */
result = vorbis_encode_setup_managed(&vi, numChannels, samplerate, (oggparms.maxBitr > 0 ? 1000 * oggparms.maxBitr : -1), (1000 * oggparms.nominalBitr), (oggparms.minBitr > 0 ? 1000 * oggparms.minBitr : -1));
if (result == OV_EFAULT) {
vorbis_info_clear(&vi);
error("Error: Internal Logic Fault");
} else if ((result == OV_EINVAL) || (result == OV_EIMPL)) {
vorbis_info_clear(&vi);
error("Error: Invalid bitrate parameters");
}
if (!oggparms.silent) {
sprintf(outputString, "Encoding to\n \"%s\"\nat average bitrate %i kbps (", outname, oggparms.nominalBitr);
if (oggparms.minBitr > 0) {
sprintf(outputString + strlen(outputString), "min %i kbps, ", oggparms.minBitr);
} else {
sprintf(outputString + strlen(outputString), "no min, ");
}
if (oggparms.maxBitr > 0) {
sprintf(outputString + strlen(outputString), "max %i kbps),\nusing full bitrate management engine\nSet optional hard quality restrictions\n", oggparms.maxBitr);
} else {
sprintf(outputString + strlen(outputString), "no max),\nusing full bitrate management engine\nSet optional hard quality restrictions\n");
}
}
} else {
int result = 0;
/* Quality input is -1 - 10, function takes -0.1 through 1.0 */
result = vorbis_encode_setup_vbr(&vi, numChannels, samplerate, oggparms.quality * 0.1f);
if (result == OV_EFAULT) {
vorbis_info_clear(&vi);
error("Internal Logic Fault");
} else if ((result == OV_EINVAL) || (result == OV_EIMPL)) {
vorbis_info_clear(&vi);
error("Invalid bitrate parameters");
}
if (!oggparms.silent) {
sprintf(outputString, "Encoding to\n \"%s\"\nat quality %2.2f", outname, oggparms.quality);
}
if ((oggparms.minBitr > 0) || (oggparms.maxBitr > 0)) {
struct ovectl_ratemanage_arg extraParam;
vorbis_encode_ctl(&vi, OV_ECTL_RATEMANAGE_GET, &extraParam);
extraParam.bitrate_hard_min = (oggparms.minBitr > 0 ? (1000 * oggparms.minBitr) : -1);
extraParam.bitrate_hard_max = (oggparms.maxBitr > 0 ? (1000 * oggparms.maxBitr) : -1);
extraParam.management_active = 1;
vorbis_encode_ctl(&vi, OV_ECTL_RATEMANAGE_SET, &extraParam);
if (!oggparms.silent) {
sprintf(outputString + strlen(outputString), " using constrained VBR (");
if (oggparms.minBitr != -1) {
sprintf(outputString + strlen(outputString), "min %i kbps, ", oggparms.minBitr);
} else {
sprintf(outputString + strlen(outputString), "no min, ");
}
if (oggparms.maxBitr != -1) {
sprintf(outputString + strlen(outputString), "max %i kbps)\nSet optional hard quality restrictions\n", oggparms.maxBitr);
} else {
sprintf(outputString + strlen(outputString), "no max)\nSet optional hard quality restrictions\n");
}
}
} else {
sprintf(outputString + strlen(outputString), "\n");
}
}
puts(outputString);
vorbis_encode_setup_init(&vi);
vorbis_comment_init(&vc);
vorbis_analysis_init(&vd, &vi);
vorbis_block_init(&vd, &vb);
ogg_stream_init(&os, 0);
vorbis_analysis_headerout(&vd, &vc, &header, &header_comm, &header_code);
ogg_stream_packetin(&os, &header);
ogg_stream_packetin(&os, &header_comm);
ogg_stream_packetin(&os, &header_code);
while (!eos) {
int result = ogg_stream_flush(&os,&og);
if (result == 0) {
break;
}
outputOgg.write(og.header, og.header_len);
outputOgg.write(og.body, og.body_len);
}
while (!eos) {
int numSamples = ((samplesLeft < 2048) ? samplesLeft : 2048);
float **buffer = vorbis_analysis_buffer(&vd, numSamples);
/* We must tell the encoder that we have reached the end of the stream */
if (numSamples == 0) {
vorbis_analysis_wrote(&vd, 0);
} else {
/* Adapted from oggenc 1.1.1 */
if (rawAudioType.bitsPerSample == 8) {
const byte *rawDataUnsigned = (const byte *)rawData;
for (int i = 0; i < numSamples; i++) {
for (int j = 0; j < numChannels; j++) {
buffer[j][i] = ((int)(rawDataUnsigned[i * numChannels + j]) - 128) / 128.0f;
}
}
} else if (rawAudioType.bitsPerSample == 16) {
if (rawAudioType.isLittleEndian) {
for (int i = 0; i < numSamples; i++) {
for (int j = 0; j < numChannels; j++) {
buffer[j][i] = ((rawData[(i * 2 * numChannels) + (2 * j) + 1] << 8) | (rawData[(i * 2 * numChannels) + (2 * j)] & 0xff)) / 32768.0f;
}
}
} else {
for (int i = 0; i < numSamples; i++) {
for (int j = 0; j < numChannels; j++) {
buffer[j][i] = ((rawData[(i * 2 * numChannels) + (2 * j)] << 8) | (rawData[(i * 2 * numChannels) + (2 * j) + 1] & 0xff)) / 32768.0f;
}
}
}
}
vorbis_analysis_wrote(&vd, numSamples);
}
while (vorbis_analysis_blockout(&vd, &vb) == 1) {
vorbis_analysis(&vb, NULL);
vorbis_bitrate_addblock(&vb);
while (vorbis_bitrate_flushpacket(&vd, &op)) {
ogg_stream_packetin(&os, &op);
while (!eos) {
int result = ogg_stream_pageout(&os, &og);
if (result == 0) {
break;
}
totalBytes += outputOgg.write(og.header, og.header_len);
totalBytes += outputOgg.write(og.body, og.body_len);
if (ogg_page_eos(&og)) {
eos = 1;
}
}
}
}
rawData += 2048 * (rawAudioType.bitsPerSample / 8) * numChannels;
samplesLeft -= 2048;
}
ogg_stream_clear(&os);
vorbis_block_clear(&vb);
vorbis_dsp_clear(&vd);
vorbis_info_clear(&vi);
if (!oggparms.silent) {
print("\nDone encoding file \"%s\"", outname);
print("\n\tFile length: %dm %ds", (int)(totalSamples / samplerate / 60), (totalSamples / samplerate % 60));
print("\tAverage bitrate: %.1f kb/s\n", (8.0 * (double)totalBytes / 1000.0) / ((double)totalSamples / (double)samplerate));
}
}
#endif
#ifdef USE_FLAC
if (compmode == AUDIO_FLAC) {
int i;
int numChannels = (rawAudioType.isStereo ? 2 : 1);
int samplesPerChannel = length / ((rawAudioType.bitsPerSample / 8) * numChannels);
FLAC__StreamEncoder *encoder;
FLAC__StreamEncoderInitStatus initStatus;
FLAC__int32 *flacData;
flacData = (FLAC__int32 *)malloc(samplesPerChannel * numChannels * sizeof(FLAC__int32));
if (rawAudioType.bitsPerSample == 8) {
for (i = 0; i < samplesPerChannel * numChannels; i++) {
FLAC__uint8 *rawDataUnsigned;
rawDataUnsigned = (FLAC__uint8 *)rawData;
flacData[i] = (FLAC__int32)rawDataUnsigned[i] - 0x80;
}
} else if (rawAudioType.bitsPerSample == 16) {
/* The rawData pointer is an 8-bit char so we must create a new pointer to access 16-bit samples */
FLAC__int16 *rawData16;
rawData16 = (FLAC__int16 *)rawData;
for (i = 0; i < samplesPerChannel * numChannels; i++) {
flacData[i] = (FLAC__int32)rawData16[i];
}
}
if (!flacparms.silent) {
print("Encoding to\n \"%s\"\nat compression level %d using blocksize %d\n", outname, flacparms.compressionLevel, flacparms.blocksize);
}
encoder = FLAC__stream_encoder_new();
FLAC__stream_encoder_set_bits_per_sample(encoder, rawAudioType.bitsPerSample);
FLAC__stream_encoder_set_blocksize(encoder, flacparms.blocksize);
FLAC__stream_encoder_set_channels(encoder, numChannels);
FLAC__stream_encoder_set_compression_level(encoder, flacparms.compressionLevel);
FLAC__stream_encoder_set_sample_rate(encoder, samplerate);
FLAC__stream_encoder_set_streamable_subset(encoder, false);
FLAC__stream_encoder_set_total_samples_estimate(encoder, samplesPerChannel);
FLAC__stream_encoder_set_verify(encoder, flacparms.verify);
initStatus = FLAC__stream_encoder_init_file(encoder, outname, NULL, NULL);
if (initStatus != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
char buf[2048];
sprintf(buf, "Error in FLAC encoder. (check the parameters)\nExact error was:%s", FLAC__StreamEncoderInitStatusString[initStatus]);
free(flacData);
throw ToolException(buf);
} else {
FLAC__stream_encoder_process_interleaved(encoder, flacData, samplesPerChannel);
}
FLAC__stream_encoder_finish(encoder);
FLAC__stream_encoder_delete(encoder);
free(flacData);
if (!flacparms.silent) {
print("\nDone encoding file \"%s\"", outname);
print("\n\tFile length: %dm %ds\n", (int)(samplesPerChannel / samplerate / 60), (samplesPerChannel / samplerate % 60));
}
}
#endif
}
FLAC__bool file_utils__generate_flacfile(FLAC__bool is_ogg, const char *output_filename, off_t *output_filesize, unsigned length, const FLAC__StreamMetadata *streaminfo, FLAC__StreamMetadata **metadata, unsigned num_metadata)
{
FLAC__int32 samples[1024];
FLAC__StreamEncoder *encoder;
FLAC__StreamEncoderInitStatus init_status;
encoder_client_struct encoder_client_data;
unsigned i, n;
FLAC__ASSERT(0 != output_filename);
FLAC__ASSERT(0 != streaminfo);
FLAC__ASSERT(streaminfo->type == FLAC__METADATA_TYPE_STREAMINFO);
FLAC__ASSERT((streaminfo->is_last && num_metadata == 0) || (!streaminfo->is_last && num_metadata > 0));
if(0 == (encoder_client_data.file = fopen(output_filename, "wb")))
return false;
encoder = FLAC__stream_encoder_new();
if(0 == encoder) {
fclose(encoder_client_data.file);
return false;
}
FLAC__stream_encoder_set_ogg_serial_number(encoder, file_utils__ogg_serial_number);
FLAC__stream_encoder_set_verify(encoder, true);
FLAC__stream_encoder_set_streamable_subset(encoder, true);
FLAC__stream_encoder_set_do_mid_side_stereo(encoder, false);
FLAC__stream_encoder_set_loose_mid_side_stereo(encoder, false);
FLAC__stream_encoder_set_channels(encoder, streaminfo->data.stream_info.channels);
FLAC__stream_encoder_set_bits_per_sample(encoder, streaminfo->data.stream_info.bits_per_sample);
FLAC__stream_encoder_set_sample_rate(encoder, streaminfo->data.stream_info.sample_rate);
FLAC__stream_encoder_set_blocksize(encoder, streaminfo->data.stream_info.min_blocksize);
FLAC__stream_encoder_set_max_lpc_order(encoder, 0);
FLAC__stream_encoder_set_qlp_coeff_precision(encoder, 0);
FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder, false);
FLAC__stream_encoder_set_do_escape_coding(encoder, false);
FLAC__stream_encoder_set_do_exhaustive_model_search(encoder, false);
FLAC__stream_encoder_set_min_residual_partition_order(encoder, 0);
FLAC__stream_encoder_set_max_residual_partition_order(encoder, 0);
FLAC__stream_encoder_set_rice_parameter_search_dist(encoder, 0);
FLAC__stream_encoder_set_total_samples_estimate(encoder, streaminfo->data.stream_info.total_samples);
FLAC__stream_encoder_set_metadata(encoder, metadata, num_metadata);
if(is_ogg)
init_status = FLAC__stream_encoder_init_ogg_stream(encoder, /*read_callback=*/0, encoder_write_callback_, /*seek_callback=*/0, /*tell_callback=*/0, encoder_metadata_callback_, &encoder_client_data);
else
init_status = FLAC__stream_encoder_init_stream(encoder, encoder_write_callback_, /*seek_callback=*/0, /*tell_callback=*/0, encoder_metadata_callback_, &encoder_client_data);
if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
fclose(encoder_client_data.file);
return false;
}
/* init the dummy sample buffer */
for(i = 0; i < sizeof(samples) / sizeof(FLAC__int32); i++)
samples[i] = i & 7;
while(length > 0) {
n = min(length, sizeof(samples) / sizeof(FLAC__int32));
if(!FLAC__stream_encoder_process_interleaved(encoder, samples, n)) {
fclose(encoder_client_data.file);
return false;
}
length -= n;
}
(void)FLAC__stream_encoder_finish(encoder);
fclose(encoder_client_data.file);
FLAC__stream_encoder_delete(encoder);
if(0 != output_filesize) {
struct stat filestats;
if(stat(output_filename, &filestats) != 0)
return false;
else
*output_filesize = filestats.st_size;
}
return true;
}
static int start_write(sox_format_t * const ft)
{
priv_t * p = (priv_t *)ft->priv;
FLAC__StreamEncoderState status;
unsigned compression_level = MAX_COMPRESSION; /* Default to "best" */
if (ft->encoding.compression != HUGE_VAL) {
compression_level = ft->encoding.compression;
if (compression_level != ft->encoding.compression ||
compression_level > MAX_COMPRESSION) {
lsx_fail_errno(ft, SOX_EINVAL,
"FLAC compression level must be a whole number from 0 to %i",
MAX_COMPRESSION);
return SOX_EOF;
}
}
p->encoder = FLAC__stream_encoder_new();
if (p->encoder == NULL) {
lsx_fail_errno(ft, SOX_ENOMEM, "FLAC ERROR creating the encoder instance");
return SOX_EOF;
}
p->decoded_samples = lsx_malloc(sox_globals.bufsiz * sizeof(FLAC__int32));
p->bits_per_sample = ft->encoding.bits_per_sample;
lsx_report("encoding at %i bits per sample", p->bits_per_sample);
FLAC__stream_encoder_set_channels(p->encoder, ft->signal.channels);
FLAC__stream_encoder_set_bits_per_sample(p->encoder, p->bits_per_sample);
FLAC__stream_encoder_set_sample_rate(p->encoder, (unsigned)(ft->signal.rate + .5));
{ /* Check if rate is streamable: */
static const unsigned streamable_rates[] =
{8000, 16000, 22050, 24000, 32000, 44100, 48000, 96000};
size_t i;
sox_bool streamable = sox_false;
for (i = 0; !streamable && i < array_length(streamable_rates); ++i)
streamable = (streamable_rates[i] == ft->signal.rate);
if (!streamable) {
lsx_report("non-standard rate; output may not be streamable");
FLAC__stream_encoder_set_streamable_subset(p->encoder, sox_false);
}
}
#if FLAC_API_VERSION_CURRENT >= 10
FLAC__stream_encoder_set_compression_level(p->encoder, compression_level);
#else
{
static struct {
unsigned blocksize;
FLAC__bool do_exhaustive_model_search;
FLAC__bool do_mid_side_stereo;
FLAC__bool loose_mid_side_stereo;
unsigned max_lpc_order;
unsigned max_residual_partition_order;
unsigned min_residual_partition_order;
} const options[MAX_COMPRESSION + 1] = {
{1152, sox_false, sox_false, sox_false, 0, 2, 2},
{1152, sox_false, sox_true, sox_true, 0, 2, 2},
{1152, sox_false, sox_true, sox_false, 0, 3, 0},
{4608, sox_false, sox_false, sox_false, 6, 3, 3},
{4608, sox_false, sox_true, sox_true, 8, 3, 3},
{4608, sox_false, sox_true, sox_false, 8, 3, 3},
{4608, sox_false, sox_true, sox_false, 8, 4, 0},
{4608, sox_true, sox_true, sox_false, 8, 6, 0},
{4608, sox_true, sox_true, sox_false, 12, 6, 0},
};
#define SET_OPTION(x) do {\
lsx_report(#x" = %i", options[compression_level].x); \
FLAC__stream_encoder_set_##x(p->encoder, options[compression_level].x);\
} while (0)
SET_OPTION(blocksize);
SET_OPTION(do_exhaustive_model_search);
SET_OPTION(max_lpc_order);
SET_OPTION(max_residual_partition_order);
SET_OPTION(min_residual_partition_order);
if (ft->signal.channels == 2) {
SET_OPTION(do_mid_side_stereo);
SET_OPTION(loose_mid_side_stereo);
}
#undef SET_OPTION
}
#endif
if (ft->signal.length != 0) {
FLAC__stream_encoder_set_total_samples_estimate(p->encoder, (FLAC__uint64)(ft->signal.length / ft->signal.channels));
p->metadata[p->num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_SEEKTABLE);
if (p->metadata[p->num_metadata] == NULL) {
lsx_fail_errno(ft, SOX_ENOMEM, "FLAC ERROR creating the encoder seek table template");
return SOX_EOF;
}
{
#if FLAC_API_VERSION_CURRENT >= 8
if (!FLAC__metadata_object_seektable_template_append_spaced_points_by_samples(p->metadata[p->num_metadata], (unsigned)(10 * ft->signal.rate + .5), (FLAC__uint64)(ft->signal.length/ft->signal.channels))) {
#else
size_t samples = 10 * ft->signal.rate;
size_t total_samples = ft->signal.length/ft->signal.channels;
if (!FLAC__metadata_object_seektable_template_append_spaced_points(p->metadata[p->num_metadata], total_samples / samples + (total_samples % samples != 0), (FLAC__uint64)total_samples)) {
#endif
lsx_fail_errno(ft, SOX_ENOMEM, "FLAC ERROR creating the encoder seek table points");
return SOX_EOF;
}
}
p->metadata[p->num_metadata]->is_last = sox_false; /* the encoder will set this for us */
++p->num_metadata;
}
if (ft->oob.comments) { /* Make the comment structure */
FLAC__StreamMetadata_VorbisComment_Entry entry;
int i;
p->metadata[p->num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
for (i = 0; ft->oob.comments[i]; ++i) {
static const char prepend[] = "Comment=";
char * text = lsx_calloc(strlen(prepend) + strlen(ft->oob.comments[i]) + 1, sizeof(*text));
/* Prepend `Comment=' if no field-name already in the comment */
if (!strchr(ft->oob.comments[i], '='))
strcpy(text, prepend);
entry.entry = (FLAC__byte *) strcat(text, ft->oob.comments[i]);
entry.length = strlen(text);
FLAC__metadata_object_vorbiscomment_append_comment(p->metadata[p->num_metadata], entry, /*copy= */ sox_true);
free(text);
}
++p->num_metadata;
}
if (p->num_metadata)
FLAC__stream_encoder_set_metadata(p->encoder, p->metadata, p->num_metadata);
#if FLAC_API_VERSION_CURRENT <= 7
FLAC__stream_encoder_set_write_callback(p->encoder, flac_stream_encoder_write_callback);
FLAC__stream_encoder_set_metadata_callback(p->encoder, flac_stream_encoder_metadata_callback);
FLAC__stream_encoder_set_client_data(p->encoder, ft);
status = FLAC__stream_encoder_init(p->encoder);
#else
status = FLAC__stream_encoder_init_stream(p->encoder, flac_stream_encoder_write_callback,
flac_stream_encoder_seek_callback, flac_stream_encoder_tell_callback, flac_stream_encoder_metadata_callback, ft);
#endif
if (status != FLAC__STREAM_ENCODER_OK) {
lsx_fail_errno(ft, SOX_EINVAL, "%s", FLAC__StreamEncoderStateString[status]);
return SOX_EOF;
}
return SOX_SUCCESS;
}
static size_t write_samples(sox_format_t * const ft, sox_sample_t const * const sampleBuffer, size_t const len)
{
priv_t * p = (priv_t *)ft->priv;
unsigned i;
for (i = 0; i < len; ++i) {
long pcm = SOX_SAMPLE_TO_SIGNED_32BIT(sampleBuffer[i], ft->clips);
p->decoded_samples[i] = pcm >> (32 - p->bits_per_sample);
switch (p->bits_per_sample) {
case 8: p->decoded_samples[i] =
SOX_SAMPLE_TO_SIGNED_8BIT(sampleBuffer[i], ft->clips);
break;
case 16: p->decoded_samples[i] =
SOX_SAMPLE_TO_SIGNED_16BIT(sampleBuffer[i], ft->clips);
break;
case 24: p->decoded_samples[i] = /* sign extension: */
SOX_SAMPLE_TO_SIGNED_24BIT(sampleBuffer[i],ft->clips) << 8;
p->decoded_samples[i] >>= 8;
break;
case 32: p->decoded_samples[i] =
SOX_SAMPLE_TO_SIGNED_32BIT(sampleBuffer[i],ft->clips);
break;
}
}
FLAC__stream_encoder_process_interleaved(p->encoder, p->decoded_samples, (unsigned) len / ft->signal.channels);
return FLAC__stream_encoder_get_state(p->encoder) == FLAC__STREAM_ENCODER_OK ? len : 0;
}
