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decoder/flac: merged code into flac_decoder_loop()

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The decoder loop of flac_decode_internal(), flac_container_decode()
and flac_filedecode_internal() is merged into this one function.  This
unifies the code, and uses the frame number to identify the end of a
CUE sub song.
This commit is contained in:
Max Kellermann 2009-11-11 13:59:45 +01:00
parent 80b220a3a6
commit c1186693b5
1 changed files with 55 additions and 101 deletions
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156
src/decoder/flac_plugin.c
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@ -390,6 +390,57 @@ flac_tag_dup(const char *file)
return flac_tag_load(file, NULL); return flac_tag_load(file, NULL);
} }
static void
flac_decoder_loop(struct flac_data *data, flac_decoder *flac_dec,
FLAC__uint64 t_start, FLAC__uint64 t_end)
{
struct decoder *decoder = data->decoder;
enum decoder_command cmd;
while (true) {
if (data->tag != NULL && !tag_is_empty(data->tag)) {
cmd = decoder_tag(data->decoder, data->input_stream,
data->tag);
tag_free(data->tag);
data->tag = tag_new();
} else
cmd = decoder_get_command(decoder);
if (cmd == DECODE_COMMAND_SEEK) {
FLAC__uint64 seek_sample = t_start +
decoder_seek_where(decoder) *
data->audio_format.sample_rate;
if (seek_sample >= t_start &&
(t_end == 0 || seek_sample <= t_end) &&
flac_seek_absolute(flac_dec, seek_sample)) {
data->next_frame = seek_sample;
data->time = (float)(seek_sample - t_start) /
data->audio_format.sample_rate;
data->position = 0;
decoder_command_finished(decoder);
} else
decoder_seek_error(decoder);
} else if (cmd == DECODE_COMMAND_STOP ||
flac_get_state(flac_dec) == flac_decoder_eof)
break;
if (t_end != 0 && data->next_frame >= t_end)
/* end of this sub track */
break;
if (!flac_process_single(flac_dec)) {
cmd = decoder_get_command(decoder);
if (cmd != DECODE_COMMAND_SEEK)
break;
}
}
if (cmd != DECODE_COMMAND_STOP) {
flacPrintErroredState(flac_get_state(flac_dec));
flac_finish(flac_dec);
}
}
static void static void
flac_decode_internal(struct decoder * decoder, flac_decode_internal(struct decoder * decoder,
struct input_stream *input_stream, struct input_stream *input_stream,
@ -397,7 +448,6 @@ flac_decode_internal(struct decoder * decoder,
{ {
flac_decoder *flac_dec; flac_decoder *flac_dec;
struct flac_data data; struct flac_data data;
enum decoder_command cmd;
const char *err = NULL; const char *err = NULL;
if (!(flac_dec = flac_new())) if (!(flac_dec = flac_new()))
@ -448,39 +498,7 @@ flac_decode_internal(struct decoder * decoder,
decoder_initialized(decoder, &data.audio_format, decoder_initialized(decoder, &data.audio_format,
input_stream->seekable, data.total_time); input_stream->seekable, data.total_time);
while (true) { flac_decoder_loop(&data, flac_dec, 0, 0);
if (!tag_is_empty(data.tag)) {
cmd = decoder_tag(decoder, input_stream, data.tag);
tag_free(data.tag);
data.tag = tag_new();
} else
cmd = decoder_get_command(decoder);
if (cmd == DECODE_COMMAND_SEEK) {
FLAC__uint64 seek_sample = decoder_seek_where(decoder) *
data.audio_format.sample_rate + 0.5;
if (flac_seek_absolute(flac_dec, seek_sample)) {
data.next_frame = seek_sample;
data.time = ((float)seek_sample) /
data.audio_format.sample_rate;
data.position = 0;
decoder_command_finished(decoder);
} else
decoder_seek_error(decoder);
} else if (cmd == DECODE_COMMAND_STOP ||
flac_get_state(flac_dec) == flac_decoder_eof)
break;
if (!flac_process_single(flac_dec)) {
cmd = decoder_get_command(decoder);
if (cmd != DECODE_COMMAND_SEEK)
break;
}
}
if (cmd != DECODE_COMMAND_STOP) {
flacPrintErroredState(flac_get_state(flac_dec));
flac_finish(flac_dec);
}
fail: fail:
flac_data_deinit(&data); flac_data_deinit(&data);
@ -615,44 +633,9 @@ flac_container_decode(struct decoder* decoder,
// seek to song start (order is important: after decoder init) // seek to song start (order is important: after decoder init)
flac_seek_absolute(flac_dec, (FLAC__uint64)t_start); flac_seek_absolute(flac_dec, (FLAC__uint64)t_start);
data.next_frame = t_start;
while (true) flac_decoder_loop(&data, flac_dec, t_start, t_end);
{
if (!flac_process_single(flac_dec))
break;
// we only need to break at the end of track if we are in "cue mode"
if (data.time >= data.total_time)
{
flacPrintErroredState(flac_get_state(flac_dec));
flac_finish(flac_dec);
}
if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK)
{
FLAC__uint64 seek_sample = t_start +
(decoder_seek_where(decoder) * data.audio_format.sample_rate);
if (seek_sample >= t_start && seek_sample <= t_end &&
flac_seek_absolute(flac_dec, (FLAC__uint64)seek_sample)) {
data.next_frame = seek_sample;
data.time = (float)(seek_sample - t_start) /
data.audio_format.sample_rate;
data.position = 0;
decoder_command_finished(decoder);
} else
decoder_seek_error(decoder);
}
else if (flac_get_state(flac_dec) == flac_decoder_eof)
break;
}
if (decoder_get_command(decoder) != DECODE_COMMAND_STOP)
{
flacPrintErroredState(flac_get_state(flac_dec));
flac_finish(flac_dec);
}
fail: fail:
if (pathname) if (pathname)
@ -747,36 +730,7 @@ flac_filedecode_internal(struct decoder* decoder,
decoder_initialized(decoder, &data.audio_format, decoder_initialized(decoder, &data.audio_format,
true, data.total_time); true, data.total_time);
while (true) flac_decoder_loop(&data, flac_dec, 0, 0);
{
if (!flac_process_single(flac_dec))
break;
if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK)
{
FLAC__uint64 seek_sample = decoder_seek_where(decoder) *
data.audio_format.sample_rate + 0.5;
if (flac_seek_absolute(flac_dec, seek_sample))
{
data.next_frame = seek_sample;
data.time = ((float)seek_sample) /
data.audio_format.sample_rate;
data.position = 0;
decoder_command_finished(decoder);
}
else
decoder_seek_error(decoder);
}
else if (flac_get_state(flac_dec) == flac_decoder_eof)
break;
}
if (decoder_get_command(decoder) != DECODE_COMMAND_STOP)
{
flacPrintErroredState(flac_get_state(flac_dec));
flac_finish(flac_dec);
}
fail: fail:
flac_data_deinit(&data); flac_data_deinit(&data);