FLAC__bool EasyFLAC__flush(EasyFLAC__StreamDecoder *decoder)
{
if (decoder->is_oggflac)
return OggFLAC__stream_decoder_flush(decoder->oggflac);
else
return FLAC__stream_decoder_flush(decoder->flac);
}
int FLAC_plugin__seek(FLAC__StreamDecoder *decoder, stream_data_struct *stream_data)
{
int pos;
FLAC__uint64 target_sample = stream_data->total_samples * stream_data->seek_to / stream_data->length_in_msec;
if (stream_data->total_samples > 0 && target_sample >= stream_data->total_samples && target_sample > 0)
target_sample = stream_data->total_samples - 1;
/* even if the seek fails we have to reset these so that we don't repeat the seek */
stream_data->seek_to = -1;
stream_data->eof = false;
wide_samples_in_reservoir_ = 0;
pos = (int)(target_sample*1000 / stream_data->sample_rate);
if (!FLAC__stream_decoder_seek_absolute(decoder, target_sample)) {
if(FLAC__stream_decoder_get_state(decoder) == FLAC__STREAM_DECODER_SEEK_ERROR)
FLAC__stream_decoder_flush(decoder);
pos = -1;
}
bh_index_last_o = bh_index_last_w = (pos/BITRATE_HIST_SEGMENT_MSEC) % BITRATE_HIST_SIZE;
if (!FLAC__stream_decoder_get_decode_position(decoder, &decode_position))
decode_position = 0;
return pos;
}
SINT SoundSourceFLAC::seekSampleFrame(SINT frameIndex) {
DEBUG_ASSERT(isValidFrameIndex(m_curFrameIndex));
DEBUG_ASSERT(isValidFrameIndex(frameIndex));
// Avoid unnecessary seeking
// NOTE(uklotzde): Disabling this optimization might reveal rare
// seek errors on certain FLAC files were the decoder loses sync!
if (m_curFrameIndex == frameIndex) {
return m_curFrameIndex;
}
// Discard decoded sample data before seeking
m_sampleBuffer.reset();
// Seek to the new position
if (FLAC__stream_decoder_seek_absolute(m_decoder, frameIndex)) {
// Set the new position
m_curFrameIndex = frameIndex;
DEBUG_ASSERT(FLAC__STREAM_DECODER_SEEK_ERROR != FLAC__stream_decoder_get_state(m_decoder));
} else {
qWarning() << "Seek error at" << frameIndex << "in" << m_file.fileName();
// Invalidate the current position
m_curFrameIndex = getMaxFrameIndex();
if (FLAC__STREAM_DECODER_SEEK_ERROR == FLAC__stream_decoder_get_state(m_decoder)) {
// Flush the input stream of the decoder according to the
// documentation of FLAC__stream_decoder_seek_absolute()
if (!FLAC__stream_decoder_flush(m_decoder)) {
qWarning() << "Failed to flush input buffer of the FLAC decoder after seeking in"
<< m_file.fileName();
// Invalidate the current position...
m_curFrameIndex = getMaxFrameIndex();
// ...and abort
return m_curFrameIndex;
}
// Discard previously decoded sample data before decoding
// the next block of samples
m_sampleBuffer.reset();
// Trigger decoding of the next block to update the current position
if (!FLAC__stream_decoder_process_single(m_decoder)) {
qWarning() << "Failed to resync FLAC decoder after seeking in"
<< m_file.fileName();
// Invalidate the current position...
m_curFrameIndex = getMaxFrameIndex();
// ...and abort
return m_curFrameIndex;
}
DEBUG_ASSERT(isValidFrameIndex(m_curFrameIndex));
if (m_curFrameIndex < frameIndex) {
// Adjust the current position
skipSampleFrames(frameIndex - m_curFrameIndex);
}
}
}
DEBUG_ASSERT(isValidFrameIndex(m_curFrameIndex));
return m_curFrameIndex;
}
static gboolean
gst_flac_dec_set_format (GstAudioDecoder * dec, GstCaps * caps)
{
const GValue *headers;
GstFlacDec *flacdec;
GstStructure *s;
guint i, num;
flacdec = GST_FLAC_DEC (dec);
GST_LOG_OBJECT (dec, "sink caps: %" GST_PTR_FORMAT, caps);
s = gst_caps_get_structure (caps, 0);
headers = gst_structure_get_value (s, "streamheader");
if (headers == NULL || !GST_VALUE_HOLDS_ARRAY (headers)) {
GST_WARNING_OBJECT (dec, "no 'streamheader' field in input caps, try "
"adding a flacparse element upstream");
return FALSE;
}
if (gst_adapter_available (flacdec->adapter) > 0) {
GST_WARNING_OBJECT (dec, "unexpected data left in adapter");
gst_adapter_clear (flacdec->adapter);
}
num = gst_value_array_get_size (headers);
for (i = 0; i < num; ++i) {
const GValue *header_val;
GstBuffer *header_buf;
header_val = gst_value_array_get_value (headers, i);
if (header_val == NULL || !GST_VALUE_HOLDS_BUFFER (header_val))
return FALSE;
header_buf = g_value_dup_boxed (header_val);
GST_INFO_OBJECT (dec, "pushing header buffer of %" G_GSIZE_FORMAT " bytes "
"into adapter", gst_buffer_get_size (header_buf));
gst_adapter_push (flacdec->adapter, header_buf);
}
GST_DEBUG_OBJECT (dec, "Processing headers and metadata");
if (!FLAC__stream_decoder_process_until_end_of_metadata (flacdec->decoder)) {
GST_WARNING_OBJECT (dec, "process_until_end_of_metadata failed");
if (FLAC__stream_decoder_get_state (flacdec->decoder) ==
FLAC__STREAM_DECODER_ABORTED) {
GST_WARNING_OBJECT (flacdec, "Read callback caused internal abort");
/* allow recovery */
gst_adapter_clear (flacdec->adapter);
FLAC__stream_decoder_flush (flacdec->decoder);
gst_flac_dec_handle_decoder_error (flacdec, TRUE);
}
}
GST_INFO_OBJECT (dec, "headers and metadata are now processed");
return TRUE;
}
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_flush(FLAC__SeekableStreamDecoder *decoder)
{
FLAC__ASSERT(0 != decoder);
FLAC__ASSERT(0 != decoder->private_);
FLAC__ASSERT(0 != decoder->protected_);
decoder->private_->do_md5_checking = false;
if(!FLAC__stream_decoder_flush(decoder->private_->stream_decoder)) {
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR;
return false;
}
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_OK;
return true;
}
static void
gst_flac_dec_flush (GstAudioDecoder * audio_dec, gboolean hard)
{
GstFlacDec *dec = GST_FLAC_DEC (audio_dec);
if (!hard) {
guint available = gst_adapter_available (dec->adapter);
if (available > 0) {
GST_INFO_OBJECT (dec, "draining, %u bytes left in adapter", available);
FLAC__stream_decoder_process_until_end_of_stream (dec->decoder);
}
}
FLAC__stream_decoder_flush (dec->decoder);
gst_adapter_clear (dec->adapter);
}
FLAC__bool OggFLAC__stream_decoder_flush(OggFLAC__StreamDecoder *decoder)
{
FLAC__ASSERT(0 != decoder);
FLAC__ASSERT(0 != decoder->private_);
FLAC__ASSERT(0 != decoder->protected_);
(void)ogg_sync_clear(&decoder->private_->ogg.sync_state);
if(!FLAC__stream_decoder_flush(decoder->private_->FLAC_stream_decoder)) {
decoder->protected_->state = OggFLAC__STREAM_DECODER_FLAC_STREAM_DECODER_ERROR;
return false;
}
decoder->protected_->state = OggFLAC__STREAM_DECODER_OK;
return true;
}
double FlacDecoder::SetPosition(double seconds) {
FLAC__uint64 seekToSample = (FLAC__uint64)((double) this->sampleRate * seconds);
if (FLAC__stream_decoder_seek_absolute(this->decoder, seekToSample)) {
return seconds;
}
if (FLAC__stream_decoder_get_state(this->decoder) == FLAC__STREAM_DECODER_SEEK_ERROR) {
if (FLAC__stream_decoder_flush(this->decoder)) {
if (FLAC__stream_decoder_seek_absolute(this->decoder, seekToSample)) {
return seconds;
}
}
}
return -1;
}
/* read mode:
* 0 - no read after seek
* 1 - read 2 frames
* 2 - read until end
*/
static FLAC__bool seek_barrage(FLAC__bool is_ogg, const char *filename, off_t filesize, unsigned count, FLAC__int64 total_samples, unsigned read_mode)
{
FLAC__StreamDecoder *decoder;
DecoderClientData decoder_client_data;
unsigned i;
long int n;
decoder_client_data.got_data = false;
decoder_client_data.total_samples = 0;
decoder_client_data.quiet = false;
decoder_client_data.ignore_errors = false;
decoder_client_data.error_occurred = false;
printf("\n+++ seek test: FLAC__StreamDecoder (%s FLAC, read_mode=%u)\n\n", is_ogg? "Ogg":"native", read_mode);
decoder = FLAC__stream_decoder_new();
if(0 == decoder)
return die_("FLAC__stream_decoder_new() FAILED, returned NULL\n");
if(is_ogg) {
if(FLAC__stream_decoder_init_ogg_file(decoder, filename, write_callback_, metadata_callback_, error_callback_, &decoder_client_data) != FLAC__STREAM_DECODER_INIT_STATUS_OK)
return die_s_("FLAC__stream_decoder_init_file() FAILED", decoder);
}
else {
if(FLAC__stream_decoder_init_file(decoder, filename, write_callback_, metadata_callback_, error_callback_, &decoder_client_data) != FLAC__STREAM_DECODER_INIT_STATUS_OK)
return die_s_("FLAC__stream_decoder_init_file() FAILED", decoder);
}
if(!FLAC__stream_decoder_process_until_end_of_metadata(decoder))
return die_s_("FLAC__stream_decoder_process_until_end_of_metadata() FAILED", decoder);
if(!is_ogg) { /* not necessary to do this for Ogg because of its seeking method */
/* process until end of stream to make sure we can still seek in that state */
decoder_client_data.quiet = true;
if(!FLAC__stream_decoder_process_until_end_of_stream(decoder))
return die_s_("FLAC__stream_decoder_process_until_end_of_stream() FAILED", decoder);
decoder_client_data.quiet = false;
printf("stream decoder state is %s\n", FLAC__stream_decoder_get_resolved_state_string(decoder));
if(FLAC__stream_decoder_get_state(decoder) != FLAC__STREAM_DECODER_END_OF_STREAM)
return die_s_("expected FLAC__STREAM_DECODER_END_OF_STREAM", decoder);
}
#ifdef _MSC_VER
printf("file's total_samples is %I64u\n", decoder_client_data.total_samples);
#else
printf("file's total_samples is %llu\n", (unsigned long long)decoder_client_data.total_samples);
#endif
#if !defined _MSC_VER && !defined __MINGW32__ && !defined __EMX__
if (decoder_client_data.total_samples > (FLAC__uint64)RAND_MAX) {
printf("ERROR: must be total_samples < %u\n", (unsigned)RAND_MAX);
return false;
}
#endif
n = (long int)decoder_client_data.total_samples;
if(n == 0 && total_samples >= 0)
n = (long int)total_samples;
/* if we don't have a total samples count, just guess based on the file size */
/* @@@ for is_ogg we should get it from last page's granulepos */
if(n == 0) {
/* 8 would imply no compression, 9 guarantees that we will get some samples off the end of the stream to test that case */
n = 9 * filesize / (decoder_client_data.channels * decoder_client_data.bits_per_sample);
#if !defined _MSC_VER && !defined __MINGW32__
if(n > RAND_MAX)
n = RAND_MAX;
#endif
}
printf("Begin seek barrage, count=%u\n", count);
for (i = 0; !stop_signal_ && (count == 0 || i < count); i++) {
FLAC__uint64 pos;
/* for the first 10, seek to the first 10 samples */
if (n >= 10 && i < 10) {
pos = i;
}
/* for the second 10, seek to the last 10 samples */
else if (n >= 10 && i < 20) {
pos = n - 1 - (i-10);
}
/* for the third 10, seek past the end and make sure we fail properly as expected */
else if (i < 30) {
pos = n + (i-20);
}
else {
#if !defined _MSC_VER && !defined __MINGW32__
pos = (FLAC__uint64)(random() % n);
#else
/* RAND_MAX is only 32767 in my MSVC */
pos = (FLAC__uint64)((rand()<<15|rand()) % n);
#endif
}
#ifdef _MSC_VER
printf("seek(%I64u)... ", pos);
#else
printf("seek(%llu)... ", (unsigned long long)pos);
#endif
fflush(stdout);
if(!FLAC__stream_decoder_seek_absolute(decoder, pos)) {
if(pos >= (FLAC__uint64)n)
printf("seek past end failed as expected... ");
else if(decoder_client_data.total_samples == 0 && total_samples <= 0)
printf("seek failed, assuming it was past EOF... ");
else
return die_s_("FLAC__stream_decoder_seek_absolute() FAILED", decoder);
if(!FLAC__stream_decoder_flush(decoder))
return die_s_("FLAC__stream_decoder_flush() FAILED", decoder);
}
else if(read_mode == 1) {
printf("decode_frame... ");
fflush(stdout);
if(!FLAC__stream_decoder_process_single(decoder))
return die_s_("FLAC__stream_decoder_process_single() FAILED", decoder);
printf("decode_frame... ");
fflush(stdout);
if(!FLAC__stream_decoder_process_single(decoder))
return die_s_("FLAC__stream_decoder_process_single() FAILED", decoder);
}
else if(read_mode == 2) {
printf("decode_all... ");
fflush(stdout);
decoder_client_data.quiet = true;
if(!FLAC__stream_decoder_process_until_end_of_stream(decoder))
return die_s_("FLAC__stream_decoder_process_until_end_of_stream() FAILED", decoder);
decoder_client_data.quiet = false;
}
printf("OK\n");
fflush(stdout);
}
if(FLAC__stream_decoder_get_state(decoder) != FLAC__STREAM_DECODER_UNINITIALIZED) {
if(!FLAC__stream_decoder_finish(decoder))
return die_s_("FLAC__stream_decoder_finish() FAILED", decoder);
}
FLAC__stream_decoder_delete(decoder);
printf("\nPASSED!\n");
return true;
}
static FLAC__bool test_stream_decoder(Layer layer, FLAC__bool is_ogg)
{
FLAC__StreamDecoder *decoder;
FLAC__StreamDecoderInitStatus init_status;
FLAC__StreamDecoderState state;
StreamDecoderClientData decoder_client_data;
FLAC__bool expect;
decoder_client_data.layer = layer;
printf("\n+++ libFLAC unit test: FLAC__StreamDecoder (layer: %s, format: %s)\n\n", LayerString[layer], is_ogg? "Ogg FLAC" : "FLAC");
printf("testing FLAC__stream_decoder_new()... ");
decoder = FLAC__stream_decoder_new();
if(0 == decoder) {
printf("FAILED, returned NULL\n");
return false;
}
printf("OK\n");
printf("testing FLAC__stream_decoder_delete()... ");
FLAC__stream_decoder_delete(decoder);
printf("OK\n");
printf("testing FLAC__stream_decoder_new()... ");
decoder = FLAC__stream_decoder_new();
if(0 == decoder) {
printf("FAILED, returned NULL\n");
return false;
}
printf("OK\n");
switch(layer) {
case LAYER_STREAM:
case LAYER_SEEKABLE_STREAM:
printf("testing FLAC__stream_decoder_init_%sstream()... ", is_ogg? "ogg_":"");
init_status = is_ogg?
FLAC__stream_decoder_init_ogg_stream(decoder, 0, 0, 0, 0, 0, 0, 0, 0, 0) :
FLAC__stream_decoder_init_stream(decoder, 0, 0, 0, 0, 0, 0, 0, 0, 0);
break;
case LAYER_FILE:
printf("testing FLAC__stream_decoder_init_%sFILE()... ", is_ogg? "ogg_":"");
init_status = is_ogg?
FLAC__stream_decoder_init_ogg_FILE(decoder, stdin, 0, 0, 0, 0) :
FLAC__stream_decoder_init_FILE(decoder, stdin, 0, 0, 0, 0);
break;
case LAYER_FILENAME:
printf("testing FLAC__stream_decoder_init_%sfile()... ", is_ogg? "ogg_":"");
init_status = is_ogg?
FLAC__stream_decoder_init_ogg_file(decoder, flacfilename(is_ogg), 0, 0, 0, 0) :
FLAC__stream_decoder_init_file(decoder, flacfilename(is_ogg), 0, 0, 0, 0);
break;
default:
die_("internal error 003");
return false;
}
if(init_status != FLAC__STREAM_DECODER_INIT_STATUS_INVALID_CALLBACKS)
return die_s_(0, decoder);
printf("OK\n");
printf("testing FLAC__stream_decoder_delete()... ");
FLAC__stream_decoder_delete(decoder);
printf("OK\n");
num_expected_ = 0;
expected_metadata_sequence_[num_expected_++] = &streaminfo_;
printf("testing FLAC__stream_decoder_new()... ");
decoder = FLAC__stream_decoder_new();
if(0 == decoder) {
printf("FAILED, returned NULL\n");
return false;
}
printf("OK\n");
if(is_ogg) {
printf("testing FLAC__stream_decoder_set_ogg_serial_number()... ");
if(!FLAC__stream_decoder_set_ogg_serial_number(decoder, file_utils__ogg_serial_number))
return die_s_("returned false", decoder);
printf("OK\n");
}
printf("testing FLAC__stream_decoder_set_md5_checking()... ");
if(!FLAC__stream_decoder_set_md5_checking(decoder, true))
return die_s_("returned false", decoder);
printf("OK\n");
if(layer < LAYER_FILENAME) {
printf("opening %sFLAC file... ", is_ogg? "Ogg ":"");
decoder_client_data.file = fopen(flacfilename(is_ogg), "rb");
if(0 == decoder_client_data.file) {
printf("ERROR (%s)\n", strerror(errno));
return false;
}
printf("OK\n");
}
switch(layer) {
case LAYER_STREAM:
printf("testing FLAC__stream_decoder_init_%sstream()... ", is_ogg? "ogg_":"");
init_status = is_ogg?
FLAC__stream_decoder_init_ogg_stream(decoder, stream_decoder_read_callback_, /*seek_callback=*/0, /*tell_callback=*/0, /*length_callback=*/0, /*eof_callback=*/0, stream_decoder_write_callback_, stream_decoder_metadata_callback_, stream_decoder_error_callback_, &decoder_client_data) :
FLAC__stream_decoder_init_stream(decoder, stream_decoder_read_callback_, /*seek_callback=*/0, /*tell_callback=*/0, /*length_callback=*/0, /*eof_callback=*/0, stream_decoder_write_callback_, stream_decoder_metadata_callback_, stream_decoder_error_callback_, &decoder_client_data);
break;
case LAYER_SEEKABLE_STREAM:
printf("testing FLAC__stream_decoder_init_%sstream()... ", is_ogg? "ogg_":"");
init_status = is_ogg?
FLAC__stream_decoder_init_ogg_stream(decoder, stream_decoder_read_callback_, stream_decoder_seek_callback_, stream_decoder_tell_callback_, stream_decoder_length_callback_, stream_decoder_eof_callback_, stream_decoder_write_callback_, stream_decoder_metadata_callback_, stream_decoder_error_callback_, &decoder_client_data) :
FLAC__stream_decoder_init_stream(decoder, stream_decoder_read_callback_, stream_decoder_seek_callback_, stream_decoder_tell_callback_, stream_decoder_length_callback_, stream_decoder_eof_callback_, stream_decoder_write_callback_, stream_decoder_metadata_callback_, stream_decoder_error_callback_, &decoder_client_data);
break;
case LAYER_FILE:
printf("testing FLAC__stream_decoder_init_%sFILE()... ", is_ogg? "ogg_":"");
init_status = is_ogg?
FLAC__stream_decoder_init_ogg_FILE(decoder, decoder_client_data.file, stream_decoder_write_callback_, stream_decoder_metadata_callback_, stream_decoder_error_callback_, &decoder_client_data) :
FLAC__stream_decoder_init_FILE(decoder, decoder_client_data.file, stream_decoder_write_callback_, stream_decoder_metadata_callback_, stream_decoder_error_callback_, &decoder_client_data);
break;
case LAYER_FILENAME:
printf("testing FLAC__stream_decoder_init_%sfile()... ", is_ogg? "ogg_":"");
init_status = is_ogg?
FLAC__stream_decoder_init_ogg_file(decoder, flacfilename(is_ogg), stream_decoder_write_callback_, stream_decoder_metadata_callback_, stream_decoder_error_callback_, &decoder_client_data) :
FLAC__stream_decoder_init_file(decoder, flacfilename(is_ogg), stream_decoder_write_callback_, stream_decoder_metadata_callback_, stream_decoder_error_callback_, &decoder_client_data);
break;
default:
die_("internal error 009");
return false;
}
if(init_status != FLAC__STREAM_DECODER_INIT_STATUS_OK)
return die_s_(0, decoder);
printf("OK\n");
printf("testing FLAC__stream_decoder_get_state()... ");
state = FLAC__stream_decoder_get_state(decoder);
printf("returned state = %u (%s)... OK\n", state, FLAC__StreamDecoderStateString[state]);
decoder_client_data.current_metadata_number = 0;
decoder_client_data.ignore_errors = false;
decoder_client_data.error_occurred = false;
printf("testing FLAC__stream_decoder_get_md5_checking()... ");
if(!FLAC__stream_decoder_get_md5_checking(decoder)) {
printf("FAILED, returned false, expected true\n");
return false;
}
printf("OK\n");
printf("testing FLAC__stream_decoder_process_until_end_of_metadata()... ");
if(!FLAC__stream_decoder_process_until_end_of_metadata(decoder))
return die_s_("returned false", decoder);
printf("OK\n");
printf("testing FLAC__stream_decoder_process_single()... ");
if(!FLAC__stream_decoder_process_single(decoder))
return die_s_("returned false", decoder);
printf("OK\n");
printf("testing FLAC__stream_decoder_skip_single_frame()... ");
if(!FLAC__stream_decoder_skip_single_frame(decoder))
return die_s_("returned false", decoder);
printf("OK\n");
if(layer < LAYER_FILE) {
printf("testing FLAC__stream_decoder_flush()... ");
if(!FLAC__stream_decoder_flush(decoder))
return die_s_("returned false", decoder);
printf("OK\n");
decoder_client_data.ignore_errors = true;
printf("testing FLAC__stream_decoder_process_single()... ");
if(!FLAC__stream_decoder_process_single(decoder))
return die_s_("returned false", decoder);
printf("OK\n");
decoder_client_data.ignore_errors = false;
}
expect = (layer != LAYER_STREAM);
printf("testing FLAC__stream_decoder_seek_absolute()... ");
if(FLAC__stream_decoder_seek_absolute(decoder, 0) != expect)
return die_s_(expect? "returned false" : "returned true", decoder);
printf("OK\n");
printf("testing FLAC__stream_decoder_process_until_end_of_stream()... ");
if(!FLAC__stream_decoder_process_until_end_of_stream(decoder))
return die_s_("returned false", decoder);
printf("OK\n");
expect = (layer != LAYER_STREAM);
printf("testing FLAC__stream_decoder_seek_absolute()... ");
if(FLAC__stream_decoder_seek_absolute(decoder, 0) != expect)
return die_s_(expect? "returned false" : "returned true", decoder);
printf("OK\n");
printf("testing FLAC__stream_decoder_get_channels()... ");
{
unsigned channels = FLAC__stream_decoder_get_channels(decoder);
if(channels != streaminfo_.data.stream_info.channels) {
printf("FAILED, returned %u, expected %u\n", channels, streaminfo_.data.stream_info.channels);
return false;
}
}
printf("OK\n");
printf("testing FLAC__stream_decoder_get_bits_per_sample()... ");
{
unsigned bits_per_sample = FLAC__stream_decoder_get_bits_per_sample(decoder);
if(bits_per_sample != streaminfo_.data.stream_info.bits_per_sample) {
printf("FAILED, returned %u, expected %u\n", bits_per_sample, streaminfo_.data.stream_info.bits_per_sample);
return false;
}
}
printf("OK\n");
printf("testing FLAC__stream_decoder_get_sample_rate()... ");
{
unsigned sample_rate = FLAC__stream_decoder_get_sample_rate(decoder);
if(sample_rate != streaminfo_.data.stream_info.sample_rate) {
printf("FAILED, returned %u, expected %u\n", sample_rate, streaminfo_.data.stream_info.sample_rate);
return false;
}
}
printf("OK\n");
printf("testing FLAC__stream_decoder_get_blocksize()... ");
{
unsigned blocksize = FLAC__stream_decoder_get_blocksize(decoder);
/* value could be anything since we're at the last block, so accept any reasonable answer */
printf("returned %u... %s\n", blocksize, blocksize>0? "OK" : "FAILED");
if(blocksize == 0)
return false;
}
printf("testing FLAC__stream_decoder_get_channel_assignment()... ");
{
FLAC__ChannelAssignment ca = FLAC__stream_decoder_get_channel_assignment(decoder);
printf("returned %u (%s)... OK\n", (unsigned)ca, FLAC__ChannelAssignmentString[ca]);
}
if(layer < LAYER_FILE) {
printf("testing FLAC__stream_decoder_reset()... ");
if(!FLAC__stream_decoder_reset(decoder)) {
state = FLAC__stream_decoder_get_state(decoder);
printf("FAILED, returned false, state = %u (%s)\n", state, FLAC__StreamDecoderStateString[state]);
return false;
}
printf("OK\n");
if(layer == LAYER_STREAM) {
/* after a reset() we have to rewind the input ourselves */
printf("rewinding input... ");
if(fseeko(decoder_client_data.file, 0, SEEK_SET) < 0) {
printf("FAILED, errno = %d\n", errno);
return false;
}
printf("OK\n");
}
decoder_client_data.current_metadata_number = 0;
printf("testing FLAC__stream_decoder_process_until_end_of_stream()... ");
if(!FLAC__stream_decoder_process_until_end_of_stream(decoder))
return die_s_("returned false", decoder);
printf("OK\n");
}
printf("testing FLAC__stream_decoder_finish()... ");
if(!FLAC__stream_decoder_finish(decoder))
return die_s_("returned false", decoder);
printf("OK\n");
/*
* respond all
*/
printf("testing FLAC__stream_decoder_set_metadata_respond_all()... ");
if(!FLAC__stream_decoder_set_metadata_respond_all(decoder))
return die_s_("returned false", decoder);
printf("OK\n");
num_expected_ = 0;
if(is_ogg) { /* encoder moves vorbis comment after streaminfo according to ogg mapping */
expected_metadata_sequence_[num_expected_++] = &streaminfo_;
expected_metadata_sequence_[num_expected_++] = &vorbiscomment_;
expected_metadata_sequence_[num_expected_++] = &padding_;
expected_metadata_sequence_[num_expected_++] = &seektable_;
expected_metadata_sequence_[num_expected
SINT SoundSourceFLAC::seekSampleFrame(SINT frameIndex) {
DEBUG_ASSERT(isValidFrameIndex(m_curFrameIndex));
DEBUG_ASSERT(isValidFrameIndex(frameIndex));
// Seek to the new position
SINT seekFrameIndex = frameIndex;
int retryCount = 0;
// NOTE(uklotzde): This loop avoids unnecessary seek operations.
// If the file is decoded from the beginning to the end during
// continuous playback no seek operations are necessary. This
// may hide rare seek errors that we have observed in some "flaky"
// FLAC files. The retry strategy implemented by this loop tries
// to solve these issues when randomly seeking through such a file.
while ((seekFrameIndex != m_curFrameIndex) &&
(retryCount <= kSeekErrorMaxRetryCount)){
// Discard decoded sample data before seeking
m_sampleBuffer.reset();
// Invalidate the current position
m_curFrameIndex = getMaxFrameIndex();
if (FLAC__stream_decoder_seek_absolute(m_decoder, seekFrameIndex)) {
// Success: Set the new position
m_curFrameIndex = seekFrameIndex;
DEBUG_ASSERT(FLAC__STREAM_DECODER_SEEK_ERROR != FLAC__stream_decoder_get_state(m_decoder));
} else {
// Failure
qWarning() << "Seek error at" << seekFrameIndex << "in" << m_file.fileName();
if (FLAC__STREAM_DECODER_SEEK_ERROR == FLAC__stream_decoder_get_state(m_decoder)) {
// Flush the input stream of the decoder according to the
// documentation of FLAC__stream_decoder_seek_absolute()
if (!FLAC__stream_decoder_flush(m_decoder)) {
qWarning() << "Failed to flush input buffer of the FLAC decoder after seek failure in"
<< m_file.fileName();
// Invalidate the current position again...
m_curFrameIndex = getMaxFrameIndex();
// ...and abort
return m_curFrameIndex;
}
}
if (getMinFrameIndex() < seekFrameIndex) {
// The next seek position should start at a preceding sample block.
// By subtracting max. blocksize from the current seek position it
// is guaranteed that the targeted sample blocks of subsequent seek
// operations will differ.
DEBUG_ASSERT(0 < m_maxBlocksize);
seekFrameIndex -= m_maxBlocksize;
if (seekFrameIndex < getMinFrameIndex()) {
seekFrameIndex = getMinFrameIndex();
}
} else {
// We have already reached the beginning of the file
// and cannot move the seek position backward any
// further!
break; // exit loop
}
}
} while (m_curFrameIndex != seekFrameIndex);
DEBUG_ASSERT(isValidFrameIndex(m_curFrameIndex));
if (frameIndex > m_curFrameIndex) {
// Adjust the current position
skipSampleFrames(frameIndex - m_curFrameIndex);
}
return m_curFrameIndex;
}
static playbackstatus MV_GetNextFLACBlock
(
VoiceNode *voice
)
{
flac_data * fd = (flac_data *) voice->extra;
FLAC__StreamDecoderState decode_state;
// FLAC__bool decode_status;
voice->Playing = TRUE;
if ((FLAC__uint64)(uintptr_t)voice->LoopEnd > 0 && fd->sample_pos >= (FLAC__uint64)(uintptr_t)voice->LoopEnd)
if (!FLAC__stream_decoder_seek_absolute(fd->stream, (FLAC__uint64)(uintptr_t)voice->LoopStart))
MV_Printf("MV_GetNextFLACBlock FLAC__stream_decoder_seek_absolute: LOOP_START %ul, LOOP_END %ul\n",
(FLAC__uint64)(uintptr_t)voice->LoopStart, (FLAC__uint64)(uintptr_t)voice->LoopEnd);
/*decode_status =*/ FLAC__stream_decoder_process_single(fd->stream);
decode_state = FLAC__stream_decoder_get_state(fd->stream);
/*
if (!decode_status)
{
MV_Printf("MV_GetNextFLACBlock: %s\n", FLAC__StreamDecoderStateString[decode_state]);
voice->Playing = FALSE;
return NoMoreData;
}
*/
if (decode_state == FLAC__STREAM_DECODER_SEEK_ERROR)
{
FLAC__stream_decoder_flush(fd->stream);
decode_state = FLAC__stream_decoder_get_state(fd->stream);
}
if (decode_state == FLAC__STREAM_DECODER_END_OF_STREAM)
{
if (voice->LoopSize > 0)
{
if (!FLAC__stream_decoder_seek_absolute(fd->stream, (FLAC__uint64)(uintptr_t)voice->LoopStart))
MV_Printf("MV_GetNextFLACBlock FLAC__stream_decoder_seek_absolute: LOOP_START %ul\n",
(FLAC__uint64)(uintptr_t)voice->LoopStart);
}
else
{
voice->Playing = FALSE;
return NoMoreData;
}
}
#if 0
// unnecessary: duplicated in write_flac_stream()
voice->channels = FLAC__stream_decoder_get_channels(fd->stream);
voice->bits = FLAC__stream_decoder_get_bits_per_sample(fd->stream);
voice->SamplingRate = FLAC__stream_decoder_get_sample_rate(fd->stream);
// CODEDUP multivoc.c MV_SetVoicePitch
voice->RateScale = ( voice->SamplingRate * voice->PitchScale ) / MV_MixRate;
voice->FixedPointBufferSize = ( voice->RateScale * MV_MIXBUFFERSIZE ) - voice->RateScale;
MV_SetVoiceMixMode( voice );
#endif
return KeepPlaying;
}
static bool_t flac_play (const char * filename, VFSFile * file)
{
if (!file)
return FALSE;
void * play_buffer = NULL;
bool_t error = FALSE;
info->fd = file;
if (read_metadata(decoder, info) == FALSE)
{
FLACNG_ERROR("Could not prepare file for playing!\n");
error = TRUE;
goto ERR_NO_CLOSE;
}
play_buffer = g_malloc (BUFFER_SIZE_BYTE);
if (! aud_input_open_audio (SAMPLE_FMT (info->bits_per_sample),
info->sample_rate, info->channels))
{
error = TRUE;
goto ERR_NO_CLOSE;
}
aud_input_set_bitrate(info->bitrate);
while (FLAC__stream_decoder_get_state(decoder) != FLAC__STREAM_DECODER_END_OF_STREAM)
{
if (aud_input_check_stop ())
break;
int seek_value = aud_input_check_seek ();
if (seek_value >= 0)
FLAC__stream_decoder_seek_absolute (decoder, (int64_t)
seek_value * info->sample_rate / 1000);
/* Try to decode a single frame of audio */
if (FLAC__stream_decoder_process_single(decoder) == FALSE)
{
FLACNG_ERROR("Error while decoding!\n");
error = TRUE;
break;
}
squeeze_audio(info->output_buffer, play_buffer, info->buffer_used, info->bits_per_sample);
aud_input_write_audio(play_buffer, info->buffer_used * SAMPLE_SIZE(info->bits_per_sample));
reset_info(info);
}
ERR_NO_CLOSE:
g_free (play_buffer);
reset_info(info);
if (FLAC__stream_decoder_flush(decoder) == FALSE)
FLACNG_ERROR("Could not flush decoder state!\n");
return ! error;
}
static GstFlowReturn
gst_flac_dec_handle_frame (GstAudioDecoder * audio_dec, GstBuffer * buf)
{
GstFlacDec *dec;
dec = GST_FLAC_DEC (audio_dec);
/* drain remaining data? */
if (G_UNLIKELY (buf == NULL)) {
gst_flac_dec_flush (audio_dec, FALSE);
return GST_FLOW_OK;
}
GST_LOG_OBJECT (dec, "frame: ts %" GST_TIME_FORMAT ", flags 0x%04x, "
"%" G_GSIZE_FORMAT " bytes", GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_BUFFER_FLAGS (buf), gst_buffer_get_size (buf));
/* drop any in-stream headers, we've processed those in set_format already */
if (G_UNLIKELY (!dec->got_headers)) {
gboolean got_audio_frame;
GstMapInfo map;
/* check if this is a flac audio frame (rather than a header or junk) */
gst_buffer_map (buf, &map, GST_MAP_READ);
got_audio_frame = gst_flac_dec_scan_got_frame (dec, map.data, map.size);
gst_buffer_unmap (buf, &map);
if (!got_audio_frame) {
GST_INFO_OBJECT (dec, "dropping in-stream header, %" G_GSIZE_FORMAT " "
"bytes", map.size);
gst_audio_decoder_finish_frame (audio_dec, NULL, 1);
return GST_FLOW_OK;
}
GST_INFO_OBJECT (dec, "first audio frame, got all in-stream headers now");
dec->got_headers = TRUE;
}
gst_adapter_push (dec->adapter, gst_buffer_ref (buf));
buf = NULL;
dec->last_flow = GST_FLOW_OK;
/* framed - there should always be enough data to decode something */
GST_LOG_OBJECT (dec, "%" G_GSIZE_FORMAT " bytes available",
gst_adapter_available (dec->adapter));
if (!FLAC__stream_decoder_process_single (dec->decoder)) {
GST_INFO_OBJECT (dec, "process_single failed");
if (FLAC__stream_decoder_get_state (dec->decoder) ==
FLAC__STREAM_DECODER_ABORTED) {
GST_WARNING_OBJECT (dec, "Read callback caused internal abort");
/* allow recovery */
gst_adapter_clear (dec->adapter);
FLAC__stream_decoder_flush (dec->decoder);
gst_flac_dec_handle_decoder_error (dec, TRUE);
}
}
return dec->last_flow;
}
FLAC__bool seek_to_absolute_sample_(FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 stream_length, FLAC__uint64 target_sample)
{
FLAC__uint64 first_frame_offset, lower_bound, upper_bound;
FLAC__int64 pos = -1, last_pos = -1;
int i, lower_seek_point = -1, upper_seek_point = -1;
unsigned approx_bytes_per_frame;
FLAC__uint64 last_frame_sample = FLAC__U64L(0xffffffffffffffff);
FLAC__bool needs_seek;
const FLAC__uint64 total_samples = decoder->private_->stream_info.total_samples;
const unsigned min_blocksize = decoder->private_->stream_info.min_blocksize;
const unsigned max_blocksize = decoder->private_->stream_info.max_blocksize;
const unsigned max_framesize = decoder->private_->stream_info.max_framesize;
const unsigned channels = FLAC__seekable_stream_decoder_get_channels(decoder);
const unsigned bps = FLAC__seekable_stream_decoder_get_bits_per_sample(decoder);
/* we are just guessing here, but we want to guess high, not low */
if(max_framesize > 0) {
approx_bytes_per_frame = max_framesize;
}
/*
* Check if it's a known fixed-blocksize stream. Note that though
* the spec doesn't allow zeroes in the STREAMINFO block, we may
* never get a STREAMINFO block when decoding so the value of
* min_blocksize might be zero.
*/
else if(min_blocksize == max_blocksize && min_blocksize > 0) {
/* note there are no () around 'bps/8' to keep precision up since it's an integer calulation */
approx_bytes_per_frame = min_blocksize * channels * bps/8 + 64;
}
else
approx_bytes_per_frame = 4608 * channels * bps/8 + 64;
/*
* The decode position is currently at the first frame since we
* rewound and processed metadata.
*/
if(!FLAC__seekable_stream_decoder_get_decode_position(decoder, &first_frame_offset)) {
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR;
return false;
}
/*
* First, we set an upper and lower bound on where in the
* stream we will search. For now we assume the worst case
* scenario, which is our best guess at the beginning of
* the first and last frames.
*/
lower_bound = first_frame_offset;
/* calc the upper_bound, beyond which we never want to seek */
if(max_framesize > 0)
upper_bound = stream_length - (max_framesize + 128 + 2); /* 128 for a possible ID3V1 tag, 2 for indexing differences */
else
upper_bound = stream_length - ((channels * bps * FLAC__MAX_BLOCK_SIZE) / 8 + 128 + 2);
/*
* Now we refine the bounds if we have a seektable with
* suitable points. Note that according to the spec they
* must be ordered by ascending sample number.
*/
if(0 != decoder->private_->seek_table) {
/* find the closest seek point <= target_sample, if it exists */
for(i = (int)decoder->private_->seek_table->num_points - 1; i >= 0; i--) {
if(decoder->private_->seek_table->points[i].sample_number != FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER && decoder->private_->seek_table->points[i].sample_number <= target_sample)
break;
}
if(i >= 0) { /* i.e. we found a suitable seek point... */
lower_bound = first_frame_offset + decoder->private_->seek_table->points[i].stream_offset;
lower_seek_point = i;
}
/* find the closest seek point > target_sample, if it exists */
for(i = 0; i < (int)decoder->private_->seek_table->num_points; i++) {
if(decoder->private_->seek_table->points[i].sample_number != FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER && decoder->private_->seek_table->points[i].sample_number > target_sample)
break;
}
if(i < (int)decoder->private_->seek_table->num_points) { /* i.e. we found a suitable seek point... */
upper_bound = first_frame_offset + decoder->private_->seek_table->points[i].stream_offset;
upper_seek_point = i;
}
}
/*
* Now guess at where within those bounds our target
* sample will be.
*/
if(lower_seek_point >= 0) {
/* first see if our sample is within a few frames of the lower seekpoint */
if(decoder->private_->seek_table->points[lower_seek_point].sample_number <= target_sample && target_sample < decoder->private_->seek_table->points[lower_seek_point].sample_number + (decoder->private_->seek_table->points[lower_seek_point].frame_samples * 4)) {
pos = (FLAC__int64)lower_bound;
}
else if(upper_seek_point >= 0) {
const FLAC__uint64 target_offset = target_sample - decoder->private_->seek_table->points[lower_seek_point].sample_number;
const FLAC__uint64 range_samples = decoder->private_->seek_table->points[upper_seek_point].sample_number - decoder->private_->seek_table->points[lower_seek_point].sample_number;
const FLAC__uint64 range_bytes = upper_bound - lower_bound;
#if defined _MSC_VER || defined __MINGW32__
/* with VC++ you have to spoon feed it the casting */
pos = (FLAC__int64)lower_bound + (FLAC__int64)((double)(FLAC__int64)target_offset / (double)(FLAC__int64)range_samples * (double)(FLAC__int64)(range_bytes-1)) - approx_bytes_per_frame;
#else
pos = (FLAC__int64)lower_bound + (FLAC__int64)((double)target_offset / (double)range_samples * (double)(range_bytes-1)) - approx_bytes_per_frame;
#endif
}
}
/*
* If there's no seek table, we need to use the metadata (if we
* have it) and the filelength to estimate the position of the
* frame with the correct sample.
*/
if(pos < 0 && total_samples > 0) {
#if defined _MSC_VER || defined __MINGW32__
/* with VC++ you have to spoon feed it the casting */
pos = (FLAC__int64)first_frame_offset + (FLAC__int64)((double)(FLAC__int64)target_sample / (double)(FLAC__int64)total_samples * (double)(FLAC__int64)(stream_length-first_frame_offset-1)) - approx_bytes_per_frame;
#else
pos = (FLAC__int64)first_frame_offset + (FLAC__int64)((double)target_sample / (double)total_samples * (double)(stream_length-first_frame_offset-1)) - approx_bytes_per_frame;
#endif
}
/*
* If there's no seek table and total_samples is unknown, we
* don't even bother trying to figure out a target, we just use
* our current position.
*/
if(pos < 0) {
FLAC__uint64 upos;
if(decoder->private_->tell_callback(decoder, &upos, decoder->private_->client_data) != FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK) {
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR;
return false;
}
pos = (FLAC__int64)upos;
needs_seek = false;
}
else
needs_seek = true;
/* clip the position to the bounds, lower bound takes precedence */
if(pos >= (FLAC__int64)upper_bound) {
pos = (FLAC__int64)upper_bound-1;
needs_seek = true;
}
if(pos < (FLAC__int64)lower_bound) {
pos = (FLAC__int64)lower_bound;
needs_seek = true;
}
decoder->private_->target_sample = target_sample;
while(1) {
if(needs_seek) {
if(decoder->private_->seek_callback(decoder, (FLAC__uint64)pos, decoder->private_->client_data) != FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK) {
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR;
return false;
}
if(!FLAC__stream_decoder_flush(decoder->private_->stream_decoder)) {
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR;
return false;
}
}
/* Now we need to get a frame. It is possible for our seek
* to land in the middle of audio data that looks exactly like
* a frame header from a future version of an encoder. When
* that happens, FLAC__stream_decoder_process_single() will
* return false and the state will be
* FLAC__STREAM_DECODER_UNPARSEABLE_STREAM. But there is a
* remote possibility that it is properly synced at such a
* "future-codec frame", so to make sure, we wait to see
* several "unparseable" errors in a row before bailing out.
*/
{
unsigned unparseable_count;
FLAC__bool got_a_frame = false;
for (unparseable_count = 0; !got_a_frame && unparseable_count < 10; unparseable_count++) {
if(FLAC__stream_decoder_process_single(decoder->private_->stream_decoder))
got_a_frame = true;
else if(decoder->private_->stream_decoder->protected_->state == FLAC__STREAM_DECODER_UNPARSEABLE_STREAM)
/* try again. we don't want to flush the decoder since that clears the bitbuffer */
decoder->private_->stream_decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
else /* it's a real error */
break;
}
if (!got_a_frame) {
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR;
return false;
}
}
/* our write callback will change the state when it gets to the target frame */
if(decoder->protected_->state != FLAC__SEEKABLE_STREAM_DECODER_SEEKING) {
break;
}
else { /* we need to narrow the search */
const FLAC__uint64 this_frame_sample = decoder->private_->last_frame.header.number.sample_number;
FLAC__ASSERT(decoder->private_->last_frame.header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
if(this_frame_sample == last_frame_sample && pos < last_pos) {
/* our last move backwards wasn't big enough, double it */
pos -= (last_pos - pos);
needs_seek = true;
}
else {
if(target_sample < this_frame_sample) {
last_pos = pos;
approx_bytes_per_frame = decoder->private_->last_frame.header.blocksize * channels * bps/8 + 64;
pos -= approx_bytes_per_frame;
needs_seek = true;
}
else { /* target_sample >= this_frame_sample + this frame's blocksize */
FLAC__uint64 upos;
if(decoder->private_->tell_callback(decoder, &upos, decoder->private_->client_data) != FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK) {
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR;
return false;
}
last_pos = pos;
pos = (FLAC__int64)upos;
pos -= FLAC__stream_decoder_get_input_bytes_unconsumed(decoder->private_->stream_decoder);
needs_seek = false;
/*
* if we haven't hit the target frame yet and our position hasn't changed,
* it means we're at the end of the stream and the seek target does not exist.
*/
if(last_pos == pos) {
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR;
return false;
}
}
}
if(pos < (FLAC__int64)lower_bound)
pos = (FLAC__int64)lower_bound;
last_frame_sample = this_frame_sample;
}
}
return true;
}
ReadableSampleFrames SoundSourceFLAC::readSampleFramesClamped(
WritableSampleFrames writableSampleFrames) {
const SINT firstFrameIndex = writableSampleFrames.frameIndexRange().start();
if (m_curFrameIndex != firstFrameIndex) {
// Seek to the new position
SINT seekFrameIndex = firstFrameIndex;
int retryCount = 0;
// NOTE(uklotzde): This loop avoids unnecessary seek operations.
// If the file is decoded from the beginning to the end during
// continuous playback no seek operations are necessary. This
// may hide rare seek errors that we have observed in some "flaky"
// FLAC files. The retry strategy implemented by this loop tries
// to solve these issues when randomly seeking through such a file.
while ((seekFrameIndex != m_curFrameIndex) &&
(retryCount <= kSeekErrorMaxRetryCount)) {
// Discard decoded sample data before seeking
m_sampleBuffer.clear();
invalidateCurFrameIndex();
if (FLAC__stream_decoder_seek_absolute(m_decoder, seekFrameIndex)) {
// Success: Set the new position
m_curFrameIndex = seekFrameIndex;
DEBUG_ASSERT(FLAC__STREAM_DECODER_SEEK_ERROR != FLAC__stream_decoder_get_state(m_decoder));
} else {
// Failure
kLogger.warning()
<< "Seek error at" << seekFrameIndex
<< "in file" << m_file.fileName();
if (FLAC__STREAM_DECODER_SEEK_ERROR == FLAC__stream_decoder_get_state(m_decoder)) {
// Flush the input stream of the decoder according to the
// documentation of FLAC__stream_decoder_seek_absolute()
if (!FLAC__stream_decoder_flush(m_decoder)) {
kLogger.warning()
<< "Failed to flush input buffer of the FLAC decoder after seek failure"
<< "in file" << m_file.fileName();
invalidateCurFrameIndex();
// ...and abort
return ReadableSampleFrames(
IndexRange::between(
m_curFrameIndex,
m_curFrameIndex));
}
}
if (frameIndexMin() < seekFrameIndex) {
// The next seek position should start at a preceding sample block.
// By subtracting max. blocksize from the current seek position it
// is guaranteed that the targeted sample blocks of subsequent seek
// operations will differ.
DEBUG_ASSERT(0 < m_maxBlocksize);
seekFrameIndex -= m_maxBlocksize;
if (seekFrameIndex < frameIndexMin()) {
seekFrameIndex = frameIndexMin();
}
} else {
// We have already reached the beginning of the file
// and cannot move the seek position backwards any
// further!
break; // exit loop
}
}
}
// Decoding starts before the actual target position
DEBUG_ASSERT(m_curFrameIndex <= firstFrameIndex);
const auto precedingFrames =
IndexRange::between(m_curFrameIndex, firstFrameIndex);
if (!precedingFrames.empty() &&
(precedingFrames != readSampleFramesClamped(WritableSampleFrames(precedingFrames)).frameIndexRange())) {
kLogger.warning()
<< "Failed to skip preceding frames"
<< precedingFrames;
// Abort
return ReadableSampleFrames(
IndexRange::between(
m_curFrameIndex,
m_curFrameIndex));
}
}
DEBUG_ASSERT(m_curFrameIndex == firstFrameIndex);
const SINT numberOfSamplesTotal = frames2samples(writableSampleFrames.frameLength());
SINT numberOfSamplesRemaining = numberOfSamplesTotal;
SINT outputSampleOffset = 0;
while (0 < numberOfSamplesRemaining) {
// If our buffer from libflac is empty (either because we explicitly cleared
// it or because we've simply used all the samples), ask for a new buffer
if (m_sampleBuffer.empty()) {
// Save the current frame index
const SINT curFrameIndexBeforeProcessing = m_curFrameIndex;
// Documentation of FLAC__stream_decoder_process_single():
// "Depending on what was decoded, the metadata or write callback
// will be called with the decoded metadata block or audio frame."
// See also: https://xiph.org/flac/api/group__flac__stream__decoder.html#ga9d6df4a39892c05955122cf7f987f856
if (!FLAC__stream_decoder_process_single(m_decoder)) {
kLogger.warning()
<< "Failed to decode FLAC file"
<< m_file.fileName();
break; // abort
}
// After decoding we might first need to skip some samples if the
// decoder complained that it has lost sync for some malformed(?)
// files
if (m_curFrameIndex != curFrameIndexBeforeProcessing) {
if (m_curFrameIndex < curFrameIndexBeforeProcessing) {
kLogger.warning()
<< "Trying to adjust frame index"
<< m_curFrameIndex << "<" << curFrameIndexBeforeProcessing
<< "while decoding FLAC file"
<< m_file.fileName();
const auto skipFrames =
IndexRange::between(m_curFrameIndex, curFrameIndexBeforeProcessing);
if (skipFrames != readSampleFramesClamped(WritableSampleFrames(skipFrames)).frameIndexRange()) {
kLogger.warning()
<< "Failed to skip sample frames"
<< skipFrames
<< "while decoding FLAC file"
<< m_file.fileName();
break; // abort
}
} else {
kLogger.warning()
<< "Unexpected frame index"
<< m_curFrameIndex << ">" << curFrameIndexBeforeProcessing
<< "while decoding FLAC file"
<< m_file.fileName();
break; // abort
}
}
DEBUG_ASSERT(curFrameIndexBeforeProcessing == m_curFrameIndex);
}
if (m_sampleBuffer.empty()) {
break; // EOF
}
const SINT numberOfSamplesRead =
std::min(m_sampleBuffer.readableLength(), numberOfSamplesRemaining);
const SampleBuffer::ReadableSlice readableSlice(
m_sampleBuffer.shrinkForReading(numberOfSamplesRead));
DEBUG_ASSERT(readableSlice.length() == numberOfSamplesRead);
if (writableSampleFrames.writableData()) {
SampleUtil::copy(
writableSampleFrames.writableData(outputSampleOffset),
readableSlice.data(),
readableSlice.length());
outputSampleOffset += numberOfSamplesRead;
}
m_curFrameIndex += samples2frames(numberOfSamplesRead);
numberOfSamplesRemaining -= numberOfSamplesRead;
}
DEBUG_ASSERT(isValidFrameIndex(m_curFrameIndex));
DEBUG_ASSERT(numberOfSamplesTotal >= numberOfSamplesRemaining);
const SINT numberOfSamples = numberOfSamplesTotal - numberOfSamplesRemaining;
return ReadableSampleFrames(
IndexRange::forward(firstFrameIndex, samples2frames(numberOfSamples)),
SampleBuffer::ReadableSlice(
writableSampleFrames.writableData(),
std::min(writableSampleFrames.writableLength(), numberOfSamples)));
}
void *play_loop_(void *arg)
{
unsigned written_time_last = 0, bh_index_last_w = 0, bh_index_last_o = BITRATE_HIST_SIZE, blocksize = 1;
FLAC__uint64 decode_position_last = 0, decode_position_frame_last = 0, decode_position_frame = 0;
(void)arg;
while(stream_data_.is_playing) {
if(!stream_data_.eof) {
while(sample_buffer_last_ - sample_buffer_first_ < SAMPLES_PER_WRITE) {
unsigned s;
s = sample_buffer_last_ - sample_buffer_first_;
if(FLAC__stream_decoder_get_state(decoder_) == FLAC__STREAM_DECODER_END_OF_STREAM) {
stream_data_.eof = true;
break;
}
else if(!FLAC__stream_decoder_process_single(decoder_)) {
/*@@@ this should probably be a dialog */
fprintf(stderr, "libxmms-flac: READ ERROR processing frame\n");
stream_data_.eof = true;
break;
}
blocksize = sample_buffer_last_ - sample_buffer_first_ - s;
decode_position_frame_last = decode_position_frame;
if(stream_data_.is_http_source || !FLAC__stream_decoder_get_decode_position(decoder_, &decode_position_frame))
decode_position_frame = 0;
}
if(sample_buffer_last_ - sample_buffer_first_ > 0) {
const unsigned n = min(sample_buffer_last_ - sample_buffer_first_, SAMPLES_PER_WRITE);
int bytes = n * stream_data_.channels * stream_data_.sample_format_bytes_per_sample;
FLAC__byte *sample_buffer_start = sample_buffer_ + sample_buffer_first_ * stream_data_.channels * stream_data_.sample_format_bytes_per_sample;
unsigned written_time, bh_index_w;
FLAC__uint64 decode_position;
sample_buffer_first_ += n;
flac_ip.add_vis_pcm(flac_ip.output->written_time(), stream_data_.sample_format, stream_data_.channels, bytes, sample_buffer_start);
while(flac_ip.output->buffer_free() < (int)bytes && stream_data_.is_playing && stream_data_.seek_to_in_sec == -1)
xmms_usleep(10000);
if(stream_data_.is_playing && stream_data_.seek_to_in_sec == -1)
flac_ip.output->write_audio(sample_buffer_start, bytes);
/* compute current bitrate */
written_time = flac_ip.output->written_time();
bh_index_w = written_time / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE;
if(bh_index_w != bh_index_last_w) {
bh_index_last_w = bh_index_w;
decode_position = decode_position_frame - (double)(sample_buffer_last_ - sample_buffer_first_) * (double)(decode_position_frame - decode_position_frame_last) / (double)blocksize;
bitrate_history_[(bh_index_w + BITRATE_HIST_SIZE - 1) % BITRATE_HIST_SIZE] =
decode_position > decode_position_last && written_time > written_time_last ?
8000 * (decode_position - decode_position_last) / (written_time - written_time_last) :
stream_data_.sample_rate * stream_data_.channels * stream_data_.bits_per_sample;
decode_position_last = decode_position;
written_time_last = written_time;
}
}
else {
stream_data_.eof = true;
xmms_usleep(10000);
}
}
else
xmms_usleep(10000);
if(!stream_data_.is_http_source && stream_data_.seek_to_in_sec != -1) {
const double distance = (double)stream_data_.seek_to_in_sec * 1000.0 / (double)stream_data_.length_in_msec;
FLAC__uint64 target_sample = (FLAC__uint64)(distance * (double)stream_data_.total_samples);
if(stream_data_.total_samples > 0 && target_sample >= stream_data_.total_samples)
target_sample = stream_data_.total_samples - 1;
if(FLAC__stream_decoder_seek_absolute(decoder_, target_sample)) {
flac_ip.output->flush(stream_data_.seek_to_in_sec * 1000);
bh_index_last_w = bh_index_last_o = flac_ip.output->output_time() / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE;
if(!FLAC__stream_decoder_get_decode_position(decoder_, &decode_position_frame))
decode_position_frame = 0;
stream_data_.eof = false;
sample_buffer_first_ = sample_buffer_last_ = 0;
}
else if(FLAC__stream_decoder_get_state(decoder_) == FLAC__STREAM_DECODER_SEEK_ERROR) {
/*@@@ this should probably be a dialog */
fprintf(stderr, "libxmms-flac: SEEK ERROR\n");
FLAC__stream_decoder_flush(decoder_);
stream_data_.eof = false;
sample_buffer_first_ = sample_buffer_last_ = 0;
}
stream_data_.seek_to_in_sec = -1;
}
else {
/* display the right bitrate from history */
unsigned bh_index_o = flac_ip.output->output_time() / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE;
if(bh_index_o != bh_index_last_o && bh_index_o != bh_index_last_w && bh_index_o != (bh_index_last_w + 1) % BITRATE_HIST_SIZE) {
bh_index_last_o = bh_index_o;
flac_ip.set_info(stream_data_.title, stream_data_.length_in_msec, bitrate_history_[bh_index_o], stream_data_.sample_rate, stream_data_.channels);
}
}
}
safe_decoder_finish_(decoder_);
/* are these two calls necessary? */
flac_ip.output->buffer_free();
flac_ip.output->buffer_free();
g_free(stream_data_.title);
pthread_exit(NULL);
return 0; /* to silence the compiler warning about not returning a value */
}
