void safe_decoder_delete_(FLAC__StreamDecoder *decoder)
{
if(decoder) {
safe_decoder_finish_(decoder);
FLAC__stream_decoder_delete(decoder);
}
}
void safe_decoder_delete_(FLAC__FileDecoder *decoder)
{
if(decoder) {
safe_decoder_finish_(decoder);
FLAC__file_decoder_delete(decoder);
}
}
FLAC__bool safe_decoder_init_(const char *filename, FLAC__StreamDecoder *decoder)
{
if(decoder == 0)
return false;
safe_decoder_finish_(decoder);
FLAC__stream_decoder_set_md5_checking(decoder, false);
FLAC__stream_decoder_set_metadata_ignore_all(decoder);
FLAC__stream_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO);
FLAC__stream_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT);
if(stream_data_.is_http_source) {
flac_http_open(filename, 0);
if(FLAC__stream_decoder_init_stream(decoder, http_read_callback_, /*seek_callback=*/0, /*tell_callback=*/0, /*length_callback=*/0, /*eof_callback=*/0, write_callback_, metadata_callback_, error_callback_, /*client_data=*/&stream_data_) != FLAC__STREAM_DECODER_INIT_STATUS_OK)
return false;
}
else {
if(FLAC__stream_decoder_init_file(decoder, filename, write_callback_, metadata_callback_, error_callback_, /*client_data=*/&stream_data_) != FLAC__STREAM_DECODER_INIT_STATUS_OK)
return false;
}
if(!FLAC__stream_decoder_process_until_end_of_metadata(decoder))
return false;
return true;
}
/***********************************************************************
* local routines
**********************************************************************/
FLAC__bool safe_decoder_init_(const char *filename, FLAC__FileDecoder *decoder)
{
if(decoder == 0) {
MessageBox(mod_.hMainWindow, "Decoder instance is NULL", "ERROR initializing decoder", 0);
return false;
}
safe_decoder_finish_(decoder);
FLAC__file_decoder_set_md5_checking(decoder, false);
FLAC__file_decoder_set_filename(decoder, filename);
FLAC__file_decoder_set_write_callback(decoder, write_callback_);
FLAC__file_decoder_set_metadata_callback(decoder, metadata_callback_);
FLAC__file_decoder_set_error_callback(decoder, error_callback_);
FLAC__file_decoder_set_client_data(decoder, &file_info_);
if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK) {
MessageBox(mod_.hMainWindow, FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder)], "ERROR initializing decoder", 0);
return false;
}
file_info_.abort_flag = false;
if(!FLAC__file_decoder_process_until_end_of_metadata(decoder)) {
MessageBox(mod_.hMainWindow, FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder)], "ERROR processing metadata", 0);
return false;
}
if(file_info_.abort_flag) {
/* metadata callback already popped up the error dialog */
return false;
}
return true;
}
void FLAC_XMMS__stop(void)
{
if(stream_data_.is_playing) {
stream_data_.is_playing = false;
if(stream_data_.play_thread_open) {
stream_data_.play_thread_open = false;
pthread_join(decode_thread_, NULL);
}
flac_ip.output->close_audio();
safe_decoder_finish_(decoder_);
}
}
void stop()
{
if(thread_handle != INVALID_HANDLE_VALUE) {
killDecodeThread = 1;
if(WaitForSingleObject(thread_handle, INFINITE) == WAIT_TIMEOUT) {
MessageBox(mod_.hMainWindow, "error asking thread to die!\n", "error killing decode thread", 0);
TerminateThread(thread_handle, 0);
}
CloseHandle(thread_handle);
thread_handle = INVALID_HANDLE_VALUE;
}
safe_decoder_finish_(decoder_);
mod_.outMod->Close();
mod_.SAVSADeInit();
}
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 */
}
void FLAC_XMMS__play_file(char *filename)
{
FILE *f;
sample_buffer_first_ = sample_buffer_last_ = 0;
audio_error_ = false;
stream_data_.abort_flag = false;
stream_data_.is_playing = false;
stream_data_.is_http_source = is_http_source(filename);
stream_data_.eof = false;
stream_data_.play_thread_open = false;
stream_data_.has_replaygain = false;
if(!is_http_source(filename)) {
if(0 == (f = fopen(filename, "r")))
return;
fclose(f);
}
if(decoder_ == 0)
return;
if(!safe_decoder_init_(filename, decoder_))
return;
if(stream_data_.has_replaygain && flac_cfg.output.replaygain.enable) {
if(flac_cfg.output.resolution.replaygain.bps_out == 8) {
stream_data_.sample_format = FMT_U8;
stream_data_.sample_format_bytes_per_sample = 1;
}
else if(flac_cfg.output.resolution.replaygain.bps_out == 16) {
stream_data_.sample_format = (is_big_endian_host_) ? FMT_S16_BE : FMT_S16_LE;
stream_data_.sample_format_bytes_per_sample = 2;
}
else {
/*@@@ need some error here like wa2: MessageBox(mod_.hMainWindow, "ERROR: plugin can only handle 8/16-bit samples\n", "ERROR: plugin can only handle 8/16-bit samples", 0); */
fprintf(stderr, "libxmms-flac: can't handle %d bit output\n", flac_cfg.output.resolution.replaygain.bps_out);
safe_decoder_finish_(decoder_);
return;
}
}
else {
if(stream_data_.bits_per_sample == 8) {
stream_data_.sample_format = FMT_U8;
stream_data_.sample_format_bytes_per_sample = 1;
}
else if(stream_data_.bits_per_sample == 16 || (stream_data_.bits_per_sample == 24 && flac_cfg.output.resolution.normal.dither_24_to_16)) {
stream_data_.sample_format = (is_big_endian_host_) ? FMT_S16_BE : FMT_S16_LE;
stream_data_.sample_format_bytes_per_sample = 2;
}
else {
/*@@@ need some error here like wa2: MessageBox(mod_.hMainWindow, "ERROR: plugin can only handle 8/16-bit samples\n", "ERROR: plugin can only handle 8/16-bit samples", 0); */
fprintf(stderr, "libxmms-flac: can't handle %d bit output\n", stream_data_.bits_per_sample);
safe_decoder_finish_(decoder_);
return;
}
}
FLAC__replaygain_synthesis__init_dither_context(&stream_data_.dither_context, stream_data_.sample_format_bytes_per_sample * 8, flac_cfg.output.resolution.replaygain.noise_shaping);
stream_data_.is_playing = true;
if(flac_ip.output->open_audio(stream_data_.sample_format, stream_data_.sample_rate, stream_data_.channels) == 0) {
audio_error_ = true;
safe_decoder_finish_(decoder_);
return;
}
stream_data_.title = flac_format_song_title(filename);
flac_ip.set_info(stream_data_.title, stream_data_.length_in_msec, stream_data_.sample_rate * stream_data_.channels * stream_data_.bits_per_sample, stream_data_.sample_rate, stream_data_.channels);
stream_data_.seek_to_in_sec = -1;
stream_data_.play_thread_open = true;
pthread_create(&decode_thread_, NULL, play_loop_, NULL);
}
