static FLAC__bool
flac_eof_cb(G_GNUC_UNUSED const FLAC__StreamDecoder *fd, void *fdata)
{
struct flac_data *data = (struct flac_data *) fdata;
return (decoder_get_command(data->decoder) != DECODE_COMMAND_NONE &&
decoder_get_command(data->decoder) != DECODE_COMMAND_SEEK) ||
input_stream_lock_eof(data->input_stream);
}
static void
flac_decoder_loop(struct flac_data *data, FLAC__StreamDecoder *flac_dec,
FLAC__uint64 t_start, FLAC__uint64 t_end)
{
struct decoder *decoder = data->decoder;
enum decoder_command cmd;
data->first_frame = t_start;
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__stream_decoder_seek_absolute(flac_dec, seek_sample)) {
data->next_frame = seek_sample;
data->position = 0;
decoder_command_finished(decoder);
} else
decoder_seek_error(decoder);
} else if (cmd == DECODE_COMMAND_STOP ||
FLAC__stream_decoder_get_state(flac_dec) == FLAC__STREAM_DECODER_END_OF_STREAM)
break;
if (t_end != 0 && data->next_frame >= t_end)
/* end of this sub track */
break;
if (!FLAC__stream_decoder_process_single(flac_dec)) {
cmd = decoder_get_command(decoder);
if (cmd != DECODE_COMMAND_SEEK)
break;
}
}
if (cmd != DECODE_COMMAND_STOP) {
flacPrintErroredState(FLAC__stream_decoder_get_state(flac_dec));
FLAC__stream_decoder_finish(flac_dec);
}
}
static void
pcm_stream_decode(struct decoder *decoder, struct input_stream *is)
{
static const struct audio_format audio_format = {
.sample_rate = 44100,
.format = SAMPLE_FORMAT_S16,
.channels = 2,
};
GError *error = NULL;
enum decoder_command cmd;
double time_to_size = audio_format_time_to_size(&audio_format);
float total_time = -1;
if (is->size >= 0)
total_time = is->size / time_to_size;
decoder_initialized(decoder, &audio_format, is->seekable, total_time);
do {
char buffer[4096];
size_t nbytes = decoder_read(decoder, is,
buffer, sizeof(buffer));
if (nbytes == 0 && input_stream_eof(is))
break;
cmd = nbytes > 0
? decoder_data(decoder, is,
buffer, nbytes, 0)
: decoder_get_command(decoder);
if (cmd == DECODE_COMMAND_SEEK) {
goffset offset = (goffset)(time_to_size *
decoder_seek_where(decoder));
if (input_stream_seek(is, offset, SEEK_SET, &error)) {
decoder_command_finished(decoder);
} else {
g_warning("seeking failed: %s", error->message);
g_error_free(error);
decoder_seek_error(decoder);
}
cmd = DECODE_COMMAND_NONE;
}
} while (cmd == DECODE_COMMAND_NONE);
}
static const char *const pcm_mime_types[] = {
/* for streams obtained by the cdio_paranoia input plugin */
"audio/x-mpd-cdda-pcm",
NULL
};
const struct decoder_plugin pcm_decoder_plugin = {
.name = "pcm",
.stream_decode = pcm_stream_decode,
.mime_types = pcm_mime_types,
};
static int ogg_seek_cb(void *data, ogg_int64_t offset, int whence)
{
struct vorbis_input_stream *vis = data;
return vis->seekable &&
(!vis->decoder || decoder_get_command(vis->decoder) != DECODE_COMMAND_STOP) &&
input_stream_lock_seek(vis->input_stream, offset, whence, NULL)
? 0 : -1;
}
static void
mp3_decode(struct decoder *decoder, struct input_stream *input_stream)
{
struct mp3_data data;
struct tag *tag = NULL;
struct replay_gain_info *replay_gain_info = NULL;
struct audio_format audio_format;
if (!mp3_open(input_stream, &data, decoder, &tag, &replay_gain_info)) {
if (decoder_get_command(decoder) == DECODE_COMMAND_NONE)
g_warning
("Input does not appear to be a mp3 bit stream.\n");
return;
}
mp3_audio_format(&data, &audio_format);
decoder_initialized(decoder, &audio_format,
data.input_stream->seekable, data.total_time);
if (tag != NULL) {
decoder_tag(decoder, input_stream, tag);
tag_free(tag);
}
while (mp3_read(&data, &replay_gain_info)) ;
if (replay_gain_info)
replay_gain_info_free(replay_gain_info);
if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK &&
data.mute_frame == MUTEFRAME_SEEK)
decoder_command_finished(decoder);
mp3_data_finish(&data);
}
static void
mp3_decode(struct decoder *decoder, struct input_stream *input_stream)
{
struct mp3_data data;
GError *error = NULL;
struct tag *tag = NULL;
struct audio_format audio_format;
if (!mp3_open(input_stream, &data, decoder, &tag)) {
if (decoder_get_command(decoder) == DECODE_COMMAND_NONE)
g_warning
("Input does not appear to be a mp3 bit stream.\n");
return;
}
if (!audio_format_init_checked(&audio_format,
data.frame.header.samplerate,
SAMPLE_FORMAT_S24_P32,
MAD_NCHANNELS(&data.frame.header),
&error)) {
g_warning("%s", error->message);
g_error_free(error);
if (tag != NULL)
tag_free(tag);
mp3_data_finish(&data);
return;
}
decoder_initialized(decoder, &audio_format,
data.input_stream->seekable, data.total_time);
if (tag != NULL) {
decoder_tag(decoder, input_stream, tag);
tag_free(tag);
}
while (mp3_read(&data)) ;
mp3_data_finish(&data);
}
static bool
vorbis_is_open(struct vorbis_input_stream *vis, OggVorbis_File *vf,
struct decoder *decoder, struct input_stream *input_stream)
{
vis->decoder = decoder;
vis->input_stream = input_stream;
vis->seekable = input_stream->seekable &&
(input_stream->uri == NULL ||
!uri_has_scheme(input_stream->uri));
int ret = ov_open_callbacks(vis, vf, NULL, 0, vorbis_is_callbacks);
if (ret < 0) {
if (decoder == NULL ||
decoder_get_command(decoder) == DECODE_COMMAND_NONE)
g_warning("Failed to open Ogg Vorbis stream: %s",
vorbis_strerror(ret));
return false;
}
return true;
}
void flac_error_common_cb(const char *plugin,
const FLAC__StreamDecoderErrorStatus status,
struct flac_data *data)
{
if (decoder_get_command(data->decoder) == DECODE_COMMAND_STOP)
return;
switch (status) {
case FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC:
g_warning("%s lost sync\n", plugin);
break;
case FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER:
g_warning("bad %s header\n", plugin);
break;
case FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH:
g_warning("%s crc mismatch\n", plugin);
break;
default:
g_warning("unknown %s error\n", plugin);
}
}
static FLAC__StreamDecoderReadStatus
flac_read_cb(G_GNUC_UNUSED const FLAC__StreamDecoder *fd,
FLAC__byte buf[], flac_read_status_size_t *bytes,
void *fdata)
{
struct flac_data *data = fdata;
size_t r;
r = decoder_read(data->decoder, data->input_stream,
(void *)buf, *bytes);
*bytes = r;
if (r == 0) {
if (decoder_get_command(data->decoder) != DECODE_COMMAND_NONE ||
input_stream_lock_eof(data->input_stream))
return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
else
return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
}
return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
}
/*
* This does the main decoding thing.
* Requires an already opened WavpackContext.
*/
static void
wavpack_decode(struct decoder *decoder, WavpackContext *wpc, bool can_seek,
struct replay_gain_info *replay_gain_info)
{
struct audio_format audio_format;
format_samples_t format_samples;
char chunk[CHUNK_SIZE];
int samples_requested, samples_got;
float total_time, current_time;
int bytes_per_sample, output_sample_size;
int position;
audio_format.sample_rate = WavpackGetSampleRate(wpc);
audio_format.channels = WavpackGetReducedChannels(wpc);
audio_format.bits = WavpackGetBitsPerSample(wpc);
/* round bitwidth to 8-bit units */
audio_format.bits = (audio_format.bits + 7) & (~7);
/* mpd handles max 24-bit samples */
if (audio_format.bits > 24) {
audio_format.bits = 24;
}
if (!audio_format_valid(&audio_format)) {
g_warning("Invalid audio format: %u:%u:%u\n",
audio_format.sample_rate,
audio_format.bits,
audio_format.channels);
return;
}
if ((WavpackGetMode(wpc) & MODE_FLOAT) == MODE_FLOAT) {
format_samples = format_samples_float;
} else {
format_samples = format_samples_int;
}
total_time = WavpackGetNumSamples(wpc);
total_time /= audio_format.sample_rate;
bytes_per_sample = WavpackGetBytesPerSample(wpc);
output_sample_size = audio_format_frame_size(&audio_format);
/* wavpack gives us all kind of samples in a 32-bit space */
samples_requested = sizeof(chunk) / (4 * audio_format.channels);
decoder_initialized(decoder, &audio_format, can_seek, total_time);
position = 0;
do {
if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
if (can_seek) {
int where;
where = decoder_seek_where(decoder);
where *= audio_format.sample_rate;
if (WavpackSeekSample(wpc, where)) {
position = where;
decoder_command_finished(decoder);
} else {
decoder_seek_error(decoder);
}
} else {
decoder_seek_error(decoder);
}
}
if (decoder_get_command(decoder) == DECODE_COMMAND_STOP) {
break;
}
samples_got = WavpackUnpackSamples(
wpc, (int32_t *)chunk, samples_requested
);
if (samples_got > 0) {
int bitrate = (int)(WavpackGetInstantBitrate(wpc) /
1000 + 0.5);
position += samples_got;
current_time = position;
current_time /= audio_format.sample_rate;
format_samples(
bytes_per_sample, chunk,
samples_got * audio_format.channels
);
decoder_data(
decoder, NULL, chunk,
samples_got * output_sample_size,
current_time, bitrate,
replay_gain_info
);
}
} while (samples_got > 0);
}
/* public */
static void
vorbis_stream_decode(struct decoder *decoder,
struct input_stream *input_stream)
{
GError *error = NULL;
if (ogg_codec_detect(decoder, input_stream) != OGG_CODEC_VORBIS)
return;
/* rewind the stream, because ogg_codec_detect() has
moved it */
input_stream_lock_seek(input_stream, 0, SEEK_SET, NULL);
struct vorbis_input_stream vis;
OggVorbis_File vf;
if (!vorbis_is_open(&vis, &vf, decoder, input_stream))
return;
const vorbis_info *vi = ov_info(&vf, -1);
if (vi == NULL) {
g_warning("ov_info() has failed");
return;
}
struct audio_format audio_format;
if (!audio_format_init_checked(&audio_format, vi->rate,
#ifdef HAVE_TREMOR
SAMPLE_FORMAT_S16,
#else
SAMPLE_FORMAT_FLOAT,
#endif
vi->channels, &error)) {
g_warning("%s", error->message);
g_error_free(error);
return;
}
float total_time = ov_time_total(&vf, -1);
if (total_time < 0)
total_time = 0;
decoder_initialized(decoder, &audio_format, vis.seekable, total_time);
enum decoder_command cmd = decoder_get_command(decoder);
#ifdef HAVE_TREMOR
char buffer[4096];
#else
float buffer[2048];
const int frames_per_buffer =
G_N_ELEMENTS(buffer) / audio_format.channels;
const unsigned frame_size = sizeof(buffer[0]) * audio_format.channels;
#endif
int prev_section = -1;
unsigned kbit_rate = 0;
do {
if (cmd == DECODE_COMMAND_SEEK) {
double seek_where = decoder_seek_where(decoder);
if (0 == ov_time_seek_page(&vf, seek_where)) {
decoder_command_finished(decoder);
} else
decoder_seek_error(decoder);
}
int current_section;
#ifdef HAVE_TREMOR
long nbytes = ov_read(&vf, buffer, sizeof(buffer),
VORBIS_BIG_ENDIAN, 2, 1,
¤t_section);
#else
float **per_channel;
long nframes = ov_read_float(&vf, &per_channel,
frames_per_buffer,
¤t_section);
long nbytes = nframes;
if (nframes > 0) {
vorbis_interleave(buffer,
(const float*const*)per_channel,
nframes, audio_format.channels);
nbytes *= frame_size;
}
#endif
if (nbytes == OV_HOLE) /* bad packet */
nbytes = 0;
else if (nbytes <= 0)
/* break on EOF or other error */
break;
if (current_section != prev_section) {
vi = ov_info(&vf, -1);
if (vi == NULL) {
g_warning("ov_info() has failed");
break;
}
if (vi->rate != (long)audio_format.sample_rate ||
vi->channels != (int)audio_format.channels) {
/* we don't support audio format
change yet */
g_warning("audio format change, stopping here");
break;
}
char **comments = ov_comment(&vf, -1)->user_comments;
vorbis_send_comments(decoder, input_stream, comments);
struct replay_gain_info rgi;
if (vorbis_comments_to_replay_gain(&rgi, comments))
decoder_replay_gain(decoder, &rgi);
prev_section = current_section;
}
long test = ov_bitrate_instant(&vf);
if (test > 0)
kbit_rate = test / 1000;
cmd = decoder_data(decoder, input_stream,
buffer, nbytes,
kbit_rate);
} while (cmd != DECODE_COMMAND_STOP);
ov_clear(&vf);
}
/*
* This does the main decoding thing.
* Requires an already opened WavpackContext.
*/
static void
wavpack_decode(struct decoder *decoder, WavpackContext *wpc, bool can_seek)
{
GError *error = NULL;
bool is_float;
enum sample_format sample_format;
struct audio_format audio_format;
format_samples_t format_samples;
float total_time;
int bytes_per_sample, output_sample_size;
is_float = (WavpackGetMode(wpc) & MODE_FLOAT) != 0;
sample_format =
wavpack_bits_to_sample_format(is_float,
WavpackGetBytesPerSample(wpc));
if (!audio_format_init_checked(&audio_format,
WavpackGetSampleRate(wpc),
sample_format,
WavpackGetNumChannels(wpc), &error)) {
g_warning("%s", error->message);
g_error_free(error);
return;
}
if (is_float) {
format_samples = format_samples_float;
} else {
format_samples = format_samples_int;
}
total_time = WavpackGetNumSamples(wpc);
total_time /= audio_format.sample_rate;
bytes_per_sample = WavpackGetBytesPerSample(wpc);
output_sample_size = audio_format_frame_size(&audio_format);
/* wavpack gives us all kind of samples in a 32-bit space */
int32_t chunk[1024];
const uint32_t samples_requested = G_N_ELEMENTS(chunk) /
audio_format.channels;
decoder_initialized(decoder, &audio_format, can_seek, total_time);
enum decoder_command cmd = decoder_get_command(decoder);
while (cmd != DECODE_COMMAND_STOP) {
if (cmd == DECODE_COMMAND_SEEK) {
if (can_seek) {
unsigned where = decoder_seek_where(decoder) *
audio_format.sample_rate;
if (WavpackSeekSample(wpc, where)) {
decoder_command_finished(decoder);
} else {
decoder_seek_error(decoder);
}
} else {
decoder_seek_error(decoder);
}
}
uint32_t samples_got = WavpackUnpackSamples(wpc, chunk,
samples_requested);
if (samples_got == 0)
break;
int bitrate = (int)(WavpackGetInstantBitrate(wpc) / 1000 +
0.5);
format_samples(bytes_per_sample, chunk,
samples_got * audio_format.channels);
cmd = decoder_data(decoder, NULL, chunk,
samples_got * output_sample_size,
bitrate);
}
}
