void SoundFileReaderFlac::seek(Uint64 sampleOffset)
{
assert(m_decoder);
// Reset the callback data (the "write" callback will be called)
m_clientData.buffer = NULL;
m_clientData.remaining = 0;
m_clientData.leftovers.clear();
// FLAC decoder expects absolute sample offset, so we take the channel count out
if (sampleOffset < m_clientData.info.sampleCount)
{
// The "write" callback will populate the leftovers buffer with the first batch of samples from the
// seek destination, and since we want that data in this typical case, we don't re-clear it afterward
FLAC__stream_decoder_seek_absolute(m_decoder, sampleOffset / m_clientData.info.channelCount);
}
else
{
// FLAC decoder can't skip straight to EOF, so we short-seek by one sample and skip the rest
FLAC__stream_decoder_seek_absolute(m_decoder, (m_clientData.info.sampleCount / m_clientData.info.channelCount) - 1);
FLAC__stream_decoder_skip_single_frame(m_decoder);
// This was re-populated during the seek, but we're skipping everything in this, so we need it emptied
m_clientData.leftovers.clear();
}
}
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_skip_single_frame(FLAC__SeekableStreamDecoder *decoder)
{
FLAC__bool ret;
FLAC__ASSERT(0 != decoder);
if(decoder->private_->stream_decoder->protected_->state == FLAC__STREAM_DECODER_END_OF_STREAM)
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM;
if(decoder->protected_->state == FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM)
return true;
FLAC__ASSERT(decoder->protected_->state == FLAC__SEEKABLE_STREAM_DECODER_OK);
ret = FLAC__stream_decoder_skip_single_frame(decoder->private_->stream_decoder);
if(!ret)
decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR;
return ret;
}
bool
flac_reader_c::parse_file() {
FLAC__StreamDecoderState state;
flac_block_t block;
uint64_t u, old_pos;
int result, progress, old_progress;
bool ok;
m_in->setFilePointer(0);
metadata_parsed = false;
mxinfo(Y("+-> Parsing the FLAC file. This can take a LONG time.\n"));
init_flac_decoder();
result = FLAC__stream_decoder_process_until_end_of_metadata(m_flac_decoder.get());
mxverb(2, boost::format("flac_reader: extract->metadata, result: %1%, mdp: %2%, num blocks: %3%\n") % result % metadata_parsed % blocks.size());
if (!metadata_parsed)
mxerror_fn(m_ti.m_fname, Y("No metadata block found. This file is broken.\n"));
FLAC__stream_decoder_get_decode_position(m_flac_decoder.get(), &u);
block.type = FLAC_BLOCK_TYPE_HEADERS;
block.filepos = 0;
block.len = u;
old_pos = u;
blocks.push_back(block);
mxverb(2, boost::format("flac_reader: headers: block at %1% with size %2%\n") % block.filepos % block.len);
old_progress = -5;
ok = FLAC__stream_decoder_skip_single_frame(m_flac_decoder.get());
while (ok) {
state = FLAC__stream_decoder_get_state(m_flac_decoder.get());
progress = m_in->getFilePointer() * 100 / m_size;
if ((progress - old_progress) >= 5) {
mxinfo(boost::format(Y("+-> Pre-parsing FLAC file: %1%%%%2%")) % progress % "\r");
old_progress = progress;
}
if (FLAC__stream_decoder_get_decode_position(m_flac_decoder.get(), &u) && (u != old_pos)) {
block.type = FLAC_BLOCK_TYPE_DATA;
block.filepos = old_pos;
block.len = u - old_pos;
old_pos = u;
blocks.push_back(block);
mxverb(2, boost::format("flac_reader: skip/decode frame, block at %1% with size %2%\n") % block.filepos % block.len);
}
if (state > FLAC__STREAM_DECODER_READ_FRAME)
break;
ok = FLAC__stream_decoder_skip_single_frame(m_flac_decoder.get());
}
if (100 != old_progress)
mxinfo(Y("+-> Pre-parsing FLAC file: 100%\n"));
else
mxinfo("\n");
if ((blocks.size() == 0) || (blocks[0].type != FLAC_BLOCK_TYPE_HEADERS))
mxerror(Y("flac_reader: Could not read all header packets.\n"));
m_in->setFilePointer(0);
blocks[0].len -= 4;
blocks[0].filepos = 4;
return metadata_parsed;
}
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
