static void
merge_song_metadata(struct song *dest, const struct song *base,
const struct song *add)
{
dest->tag = base->tag != NULL
? (add->tag != NULL
? tag_merge(base->tag, add->tag)
: tag_dup(base->tag))
: (add->tag != NULL
? tag_dup(add->tag)
: NULL);
dest->mtime = base->mtime;
dest->start_ms = add->start_ms;
dest->end_ms = add->end_ms;
}
enum decoder_command
decoder_tag(G_GNUC_UNUSED struct decoder *decoder, struct input_stream *is,
const struct tag *tag)
{
enum decoder_command cmd;
assert(dc.state == DECODE_STATE_DECODE);
assert(tag != NULL);
/* save the tag */
if (decoder->decoder_tag != NULL)
tag_free(decoder->decoder_tag);
decoder->decoder_tag = tag_dup(tag);
/* check for a new stream tag */
update_stream_tag(decoder, is);
/* send tag to music pipe */
if (decoder->stream_tag != NULL) {
/* merge with tag from input stream */
struct tag *merged;
merged = tag_merge(decoder->stream_tag, decoder->decoder_tag);
cmd = do_send_tag(decoder, is, merged);
tag_free(merged);
} else
/* send only the decoder tag */
cmd = do_send_tag(decoder, is, tag);
return cmd;
}
static void
decoder_run_song(struct decoder_control *dc,
const struct song *song, const char *uri)
{
struct decoder decoder = {
.dc = dc,
};
int ret;
decoder.timestamp = 0.0;
decoder.seeking = false;
decoder.song_tag = song->tag != NULL && song_is_file(song)
? tag_dup(song->tag) : NULL;
decoder.stream_tag = NULL;
decoder.decoder_tag = NULL;
decoder.chunk = NULL;
dc->state = DECODE_STATE_START;
decoder_command_finished_locked(dc);
pcm_convert_init(&decoder.conv_state);
ret = song_is_file(song)
? decoder_run_file(&decoder, uri)
: decoder_run_stream(&decoder, uri);
decoder_unlock(dc);
pcm_convert_deinit(&decoder.conv_state);
/* flush the last chunk */
if (decoder.chunk != NULL)
decoder_flush_chunk(&decoder);
if (decoder.song_tag != NULL)
tag_free(decoder.song_tag);
if (decoder.stream_tag != NULL)
tag_free(decoder.stream_tag);
if (decoder.decoder_tag != NULL)
tag_free(decoder.decoder_tag);
decoder_lock(dc);
dc->state = ret ? DECODE_STATE_STOP : DECODE_STATE_ERROR;
}
enum decoder_command
decoder_tag(G_GNUC_UNUSED struct decoder *decoder, struct input_stream *is,
const struct tag *tag)
{
G_GNUC_UNUSED const struct decoder_control *dc = decoder->dc;
enum decoder_command cmd;
assert(dc->state == DECODE_STATE_DECODE);
assert(dc->pipe != NULL);
assert(tag != NULL);
/* save the tag */
if (decoder->decoder_tag != NULL)
tag_free(decoder->decoder_tag);
decoder->decoder_tag = tag_dup(tag);
/* check for a new stream tag */
update_stream_tag(decoder, is);
/* check if we're seeking */
if (decoder_prepare_initial_seek(decoder))
/* during initial seek, no music chunk must be created
until seeking is finished; skip the rest of the
function here */
return DECODE_COMMAND_SEEK;
/* send tag to music pipe */
if (decoder->stream_tag != NULL) {
/* merge with tag from input stream */
struct tag *merged;
merged = tag_merge(decoder->stream_tag, decoder->decoder_tag);
cmd = do_send_tag(decoder, is, merged);
tag_free(merged);
} else
/* send only the decoder tag */
cmd = do_send_tag(decoder, is, tag);
return cmd;
}
static void
update_song_tag(struct song *song, const struct tag *new_tag)
{
if (song_is_file(song))
/* don't update tags of local files, only remote
streams may change tags dynamically */
return;
struct tag *old_tag = song->tag;
song->tag = tag_dup(new_tag);
if (old_tag != NULL)
tag_free(old_tag);
/* the main thread will update the playlist version when he
receives this event */
event_pipe_emit(PIPE_EVENT_TAG);
/* notify all clients that the tag of the current song has
changed */
idle_add(IDLE_PLAYER);
}
/**
* Sends a #tag as-is to the music pipe. Flushes the current chunk
* (decoder.chunk) if there is one.
*/
static enum decoder_command
do_send_tag(struct decoder *decoder, struct input_stream *is,
const struct tag *tag)
{
struct music_chunk *chunk;
if (decoder->chunk != NULL) {
/* there is a partial chunk - flush it, we want the
tag in a new chunk */
decoder_flush_chunk(decoder);
player_lock_signal();
}
assert(decoder->chunk == NULL);
chunk = decoder_get_chunk(decoder, is);
if (chunk == NULL) {
assert(decoder->dc->command != DECODE_COMMAND_NONE);
return decoder->dc->command;
}
chunk->tag = tag_dup(tag);
return DECODE_COMMAND_NONE;
}
static void
decoder_run_song(struct decoder_control *dc,
const struct song *song, const char *uri)
{
struct decoder decoder = {
.dc = dc,
.initial_seek_pending = dc->start_ms > 0,
.initial_seek_running = false,
};
int ret;
decoder.timestamp = 0.0;
decoder.seeking = false;
decoder.song_tag = song->tag != NULL && song_is_file(song)
? tag_dup(song->tag) : NULL;
decoder.stream_tag = NULL;
decoder.decoder_tag = NULL;
decoder.chunk = NULL;
dc->state = DECODE_STATE_START;
decoder_command_finished_locked(dc);
pcm_convert_init(&decoder.conv_state);
ret = song_is_file(song)
? decoder_run_file(&decoder, uri)
: decoder_run_stream(&decoder, uri);
decoder_unlock(dc);
pcm_convert_deinit(&decoder.conv_state);
/* flush the last chunk */
if (decoder.chunk != NULL)
decoder_flush_chunk(&decoder);
if (decoder.song_tag != NULL)
tag_free(decoder.song_tag);
if (decoder.stream_tag != NULL)
tag_free(decoder.stream_tag);
if (decoder.decoder_tag != NULL)
tag_free(decoder.decoder_tag);
decoder_lock(dc);
dc->state = ret ? DECODE_STATE_STOP : DECODE_STATE_ERROR;
}
static void
decoder_run(struct decoder_control *dc)
{
const struct song *song = dc->song;
char *uri;
assert(song != NULL);
if (song_is_file(song))
uri = map_song_fs(song);
else
uri = song_get_uri(song);
if (uri == NULL) {
dc->state = DECODE_STATE_ERROR;
decoder_command_finished_locked(dc);
return;
}
decoder_run_song(dc, song, uri);
g_free(uri);
}
static gpointer
decoder_task(gpointer arg)
{
struct decoder_control *dc = arg;
decoder_lock(dc);
do {
assert(dc->state == DECODE_STATE_STOP ||
dc->state == DECODE_STATE_ERROR);
switch (dc->command) {
case DECODE_COMMAND_START:
dc_mixramp_start(dc, NULL);
dc_mixramp_prev_end(dc, dc->mixramp_end);
dc->mixramp_end = NULL; /* Don't free, it's copied above. */
dc->replay_gain_prev_db = dc->replay_gain_db;
dc->replay_gain_db = 0;
/* fall through */
case DECODE_COMMAND_SEEK:
decoder_run(dc);
break;
case DECODE_COMMAND_STOP:
decoder_command_finished_locked(dc);
break;
case DECODE_COMMAND_NONE:
decoder_wait(dc);
break;
}
} while (dc->command != DECODE_COMMAND_NONE || !dc->quit);
decoder_unlock(dc);
return NULL;
}
void
decoder_thread_start(struct decoder_control *dc)
{
GError *e = NULL;
assert(dc->thread == NULL);
dc->quit = false;
dc->thread = g_thread_create(decoder_task, dc, true, &e);
if (dc->thread == NULL)
MPD_ERROR("Failed to spawn decoder task: %s", e->message);
}
static void
decoder_run_song(struct decoder_control *dc,
const struct song *song, const char *uri)
{
struct decoder decoder = {
.dc = dc,
.initial_seek_pending = dc->start_ms > 0,
.initial_seek_running = false,
};
int ret;
decoder.timestamp = 0.0;
decoder.seeking = false;
decoder.song_tag = song->tag != NULL && song_is_file(song)
? tag_dup(song->tag) : NULL;
decoder.stream_tag = NULL;
decoder.decoder_tag = NULL;
decoder.chunk = NULL;
dc->state = DECODE_STATE_START;
decoder_command_finished_locked(dc);
pcm_convert_init(&decoder.conv_state);
ret = song_is_file(song)
? decoder_run_file(&decoder, uri)
: decoder_run_stream(&decoder, uri);
decoder_unlock(dc);
pcm_convert_deinit(&decoder.conv_state);
/* flush the last chunk */
if (decoder.chunk != NULL)
decoder_flush_chunk(&decoder);
if (decoder.song_tag != NULL)
tag_free(decoder.song_tag);
if (decoder.stream_tag != NULL)
tag_free(decoder.stream_tag);
if (decoder.decoder_tag != NULL)
tag_free(decoder.decoder_tag);
decoder_lock(dc);
if (ret)
dc->state = DECODE_STATE_STOP;
else {
dc->state = DECODE_STATE_ERROR;
const char *error_uri = song->uri;
char *allocated = uri_remove_auth(error_uri);
if (allocated != NULL)
error_uri = allocated;
dc->error = g_error_new(decoder_quark(), 0,
"Failed to decode %s", error_uri);
g_free(allocated);
}
}
static void
decoder_run(struct decoder_control *dc)
{
dc_clear_error(dc);
const struct song *song = dc->song;
char *uri;
assert(song != NULL);
if (song_is_file(song))
uri = map_song_fs(song);
else
uri = song_get_uri(song);
if (uri == NULL) {
dc->state = DECODE_STATE_ERROR;
dc->error = g_error_new(decoder_quark(), 0,
"Failed to map song");
decoder_command_finished_locked(dc);
return;
}
decoder_run_song(dc, song, uri);
g_free(uri);
}