int FLAC_plugin__seek(FLAC__FileDecoder *decoder, file_info_struct *file_info)
{
int pos;
const FLAC__uint64 target_sample =
(FLAC__uint64)file_info->total_samples*file_info->seek_to / file_info->length_in_msec;
if (!FLAC__file_decoder_seek_absolute(decoder, target_sample))
return -1;
file_info->seek_to = -1;
file_info->eof = false;
wide_samples_in_reservoir_ = 0;
pos = (int)(target_sample*1000 / file_info->sample_rate);
bh_index_last_o = bh_index_last_w = (pos/BITRATE_HIST_SEGMENT_MSEC) % BITRATE_HIST_SIZE;
if (!FLAC__file_decoder_get_decode_position(decoder, &decode_position))
decode_position = 0;
return pos;
}
static FLAC__bool seek_barrage_native_flac(const char *filename, off_t filesize, unsigned count)
{
FLAC__FileDecoder *decoder;
decoder_client_data_struct decoder_client_data;
unsigned i;
long int n;
decoder_client_data.got_data = false;
decoder_client_data.total_samples = 0;
decoder_client_data.ignore_errors = false;
decoder_client_data.error_occurred = false;
printf("\n+++ seek test: FLAC__FileDecoder\n\n");
decoder = FLAC__file_decoder_new();
if(0 == decoder)
return die_("FLAC__file_decoder_new() FAILED, returned NULL\n");
if(!FLAC__file_decoder_set_write_callback(decoder, file_decoder_write_callback_))
return die_f_("FLAC__file_decoder_set_write_callback() FAILED", decoder);
if(!FLAC__file_decoder_set_metadata_callback(decoder, file_decoder_metadata_callback_))
return die_f_("FLAC__file_decoder_set_metadata_callback() FAILED", decoder);
if(!FLAC__file_decoder_set_error_callback(decoder, file_decoder_error_callback_))
return die_f_("FLAC__file_decoder_set_error_callback() FAILED", decoder);
if(!FLAC__file_decoder_set_client_data(decoder, &decoder_client_data))
return die_f_("FLAC__file_decoder_set_client_data() FAILED", decoder);
if(!FLAC__file_decoder_set_filename(decoder, filename))
return die_f_("FLAC__file_decoder_set_filename() FAILED", decoder);
if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK)
return die_f_("FLAC__file_decoder_init() FAILED", decoder);
if(!FLAC__file_decoder_process_until_end_of_metadata(decoder))
return die_f_("FLAC__file_decoder_process_until_end_of_metadata() FAILED", decoder);
printf("file's total_samples is %llu\n", decoder_client_data.total_samples);
#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 we don't have a total samples count, just guess based on the file size */
/* @@@ 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
}
printf("seek(%llu)... ", pos);
fflush(stdout);
if(!FLAC__file_decoder_seek_absolute(decoder, pos)) {
if(pos < (FLAC__uint64)n && decoder_client_data.total_samples != 0)
return die_f_("FLAC__file_decoder_seek_absolute() FAILED", decoder);
else if(decoder_client_data.total_samples == 0)
printf("seek failed, assuming it was past EOF... ");
else
printf("seek past end failed as expected... ");
/* hack to work around a deficiency in the seek API's behavior */
/* seeking past EOF sets the file decoder state to non-OK and there's no ..._flush() or ..._reset() call to reset it */
if(!FLAC__file_decoder_finish(decoder))
return die_f_("FLAC__file_decoder_finish() FAILED", decoder);
if(!FLAC__file_decoder_set_write_callback(decoder, file_decoder_write_callback_))
return die_f_("FLAC__file_decoder_set_write_callback() FAILED", decoder);
if(!FLAC__file_decoder_set_metadata_callback(decoder, file_decoder_metadata_callback_))
return die_f_("FLAC__file_decoder_set_metadata_callback() FAILED", decoder);
if(!FLAC__file_decoder_set_error_callback(decoder, file_decoder_error_callback_))
return die_f_("FLAC__file_decoder_set_error_callback() FAILED", decoder);
if(!FLAC__file_decoder_set_client_data(decoder, &decoder_client_data))
return die_f_("FLAC__file_decoder_set_client_data() FAILED", decoder);
if(!FLAC__file_decoder_set_filename(decoder, filename))
return die_f_("FLAC__file_decoder_set_filename() FAILED", decoder);
if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK)
return die_f_("FLAC__file_decoder_init() FAILED", decoder);
if(!FLAC__file_decoder_process_until_end_of_metadata(decoder))
return die_f_("FLAC__file_decoder_process_until_end_of_metadata() FAILED", decoder);
}
else {
printf("decode_frame... ");
fflush(stdout);
if(!FLAC__file_decoder_process_single(decoder))
return die_f_("FLAC__file_decoder_process_single() FAILED", decoder);
printf("decode_frame... ");
fflush(stdout);
if(!FLAC__file_decoder_process_single(decoder))
return die_f_("FLAC__file_decoder_process_single() FAILED", decoder);
}
printf("OK\n");
fflush(stdout);
}
if(FLAC__file_decoder_get_state(decoder) != FLAC__FILE_DECODER_UNINITIALIZED) {
if(!FLAC__file_decoder_finish(decoder))
return die_f_("FLAC__file_decoder_finish() FAILED", decoder);
}
printf("\nPASSED!\n");
return true;
}
DWORD WINAPI __stdcall DecodeThread(void *b)
{
int done = 0;
while(! *((int *)b) ) {
const unsigned channels = file_info_.channels;
const unsigned bits_per_sample = file_info_.bits_per_sample;
#ifdef FLAC__DO_DITHER
const unsigned target_bps = min(bits_per_sample, 16);
#else
const unsigned target_bps = bits_per_sample;
#endif
const unsigned sample_rate = file_info_.sample_rate;
if(seek_needed_ != -1) {
const double distance = (double)seek_needed_ / (double)getlength();
const unsigned target_sample = (unsigned)(distance * (double)file_info_.total_samples);
if(FLAC__file_decoder_seek_absolute(decoder_, (FLAC__uint64)target_sample)) {
decode_pos_ms_ = (int)(distance * (double)getlength());
seek_needed_ = -1;
done = 0;
mod_.outMod->Flush(decode_pos_ms_);
}
}
if(done) {
if(!mod_.outMod->IsPlaying()) {
PostMessage(mod_.hMainWindow, WM_WA_MPEG_EOF, 0, 0);
return 0;
}
Sleep(10);
}
else if(mod_.outMod->CanWrite() >= ((int)(SAMPLES_PER_WRITE*channels*((target_bps+7)/8)) << (mod_.dsp_isactive()?1:0))) {
while(wide_samples_in_reservoir_ < SAMPLES_PER_WRITE) {
if(FLAC__file_decoder_get_state(decoder_) == FLAC__FILE_DECODER_END_OF_FILE) {
done = 1;
break;
}
else if(!FLAC__file_decoder_process_single(decoder_)) {
MessageBox(mod_.hMainWindow, FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder_)], "READ ERROR processing frame", 0);
done = 1;
break;
}
}
if(wide_samples_in_reservoir_ == 0) {
done = 1;
}
else {
const unsigned n = min(wide_samples_in_reservoir_, SAMPLES_PER_WRITE);
const unsigned delta = n * channels;
int bytes = (int)FLAC__plugin_common__pack_pcm_signed_little_endian(sample_buffer_, reservoir_, n, channels, bits_per_sample, target_bps);
unsigned i;
for(i = delta; i < wide_samples_in_reservoir_ * channels; i++)
reservoir_[i-delta] = reservoir_[i];
wide_samples_in_reservoir_ -= n;
do_vis((char *)sample_buffer_, channels, target_bps, decode_pos_ms_, n);
decode_pos_ms_ += (n*1000 + sample_rate/2)/sample_rate;
if(mod_.dsp_isactive())
bytes = mod_.dsp_dosamples((short *)sample_buffer_, n, target_bps, channels, sample_rate) * (channels*target_bps/8);
mod_.outMod->Write(sample_buffer_, bytes);
}
}
else Sleep(20);
}
return 0;
}