bool
audio_format_parse(struct audio_format *dest, const char *src,
bool mask, GError **error_r)
{
uint32_t rate;
enum sample_format sample_format;
uint8_t channels;
audio_format_clear(dest);
/* parse sample rate */
#if GCC_CHECK_VERSION(4,7)
/* workaround -Wmaybe-uninitialized false positive */
rate = 0;
#endif
if (!parse_sample_rate(src, mask, &rate, &src, error_r))
return false;
if (*src++ != ':') {
g_set_error(error_r, audio_parser_quark(), 0,
"Sample format missing");
return false;
}
/* parse sample format */
#if GCC_CHECK_VERSION(4,7)
/* workaround -Wmaybe-uninitialized false positive */
sample_format = SAMPLE_FORMAT_UNDEFINED;
#endif
if (!parse_sample_format(src, mask, &sample_format, &src, error_r))
return false;
if (*src++ != ':') {
g_set_error(error_r, audio_parser_quark(), 0,
"Channel count missing");
return false;
}
/* parse channel count */
if (!parse_channel_count(src, mask, &channels, &src, error_r))
return false;
if (*src != 0) {
g_set_error(error_r, audio_parser_quark(), 0,
"Extra data after channel count: %s", src);
return false;
}
audio_format_init(dest, rate, sample_format, channels);
assert(mask ? audio_format_mask_valid(dest)
: audio_format_valid(dest));
return true;
}
/**
* After the decoder has been started asynchronously, wait for the
* "START" command to finish. The decoder may not be initialized yet,
* i.e. there is no audio_format information yet.
*
* The player lock is not held.
*/
static bool
player_wait_for_decoder(struct player *player)
{
struct player_control *pc = player->pc;
struct decoder_control *dc = player->dc;
assert(player->queued || pc->command == PLAYER_COMMAND_SEEK);
assert(pc->next_song != NULL);
player->queued = false;
GError *error = dc_lock_get_error(dc);
if (error != NULL) {
player_lock(pc);
pc_set_error(pc, PLAYER_ERROR_DECODER, error);
song_free(pc->next_song);
pc->next_song = NULL;
player_unlock(pc);
return false;
}
if (player->song != NULL)
song_free(player->song);
player->song = pc->next_song;
player->elapsed_time = 0.0;
/* set the "starting" flag, which will be cleared by
player_check_decoder_startup() */
player->decoder_starting = true;
player_lock(pc);
/* update player_control's song information */
pc->total_time = song_get_duration(pc->next_song);
pc->bit_rate = 0;
audio_format_clear(&pc->audio_format);
/* clear the queued song */
pc->next_song = NULL;
player_unlock(pc);
/* call syncPlaylistWithQueue() in the main thread */
event_pipe_emit(PIPE_EVENT_PLAYLIST);
return true;
}
bool
audio_format_parse(struct audio_format *dest, const char *src,
bool mask, GError **error_r)
{
uint32_t rate;
enum sample_format sample_format;
uint8_t channels;
audio_format_clear(dest);
/* parse sample rate */
if (!parse_sample_rate(src, mask, &rate, &src, error_r))
return false;
if (*src++ != ':') {
g_set_error(error_r, audio_parser_quark(), 0,
"Sample format missing");
return false;
}
/* parse sample format */
if (!parse_sample_format(src, mask, &sample_format, &src, error_r))
return false;
if (*src++ != ':') {
g_set_error(error_r, audio_parser_quark(), 0,
"Channel count missing");
return false;
}
/* parse channel count */
if (!parse_channel_count(src, mask, &channels, &src, error_r))
return false;
if (*src != 0) {
g_set_error(error_r, audio_parser_quark(), 0,
"Extra data after channel count: %s", src);
return false;
}
audio_format_init(dest, rate, sample_format, channels);
assert(mask ? audio_format_mask_valid(dest)
: audio_format_valid(dest));
return true;
}
/**
* After the decoder has been started asynchronously, wait for the
* "START" command to finish. The decoder may not be initialized yet,
* i.e. there is no audio_format information yet.
*
* The player lock is not held.
*/
static bool
player_wait_for_decoder(struct player *player)
{
struct decoder_control *dc = player->dc;
assert(player->queued || pc.command == PLAYER_COMMAND_SEEK);
assert(pc.next_song != NULL);
player->queued = false;
if (decoder_lock_has_failed(dc)) {
player_lock();
pc.errored_song = dc->song;
pc.error = PLAYER_ERROR_FILE;
pc.next_song = NULL;
player_unlock();
return false;
}
player->song = pc.next_song;
player->elapsed_time = 0.0;
/* set the "starting" flag, which will be cleared by
player_check_decoder_startup() */
player->decoder_starting = true;
player_lock();
/* update player_control's song information */
pc.total_time = song_get_duration(pc.next_song);
pc.bit_rate = 0;
audio_format_clear(&pc.audio_format);
/* clear the queued song */
pc.next_song = NULL;
player_unlock();
/* call syncPlaylistWithQueue() in the main thread */
event_pipe_emit(PIPE_EVENT_PLAYLIST);
return true;
}
bool
audio_output_init(struct audio_output *ao, const struct config_param *param,
GError **error_r)
{
const struct audio_output_plugin *plugin = NULL;
GError *error = NULL;
if (param) {
const char *p;
p = config_get_block_string(param, AUDIO_OUTPUT_TYPE, NULL);
if (p == NULL) {
g_set_error(error_r, audio_output_quark(), 0,
"Missing \"type\" configuration");
return false;
}
plugin = audio_output_plugin_get(p);
if (plugin == NULL) {
g_set_error(error_r, audio_output_quark(), 0,
"No such audio output plugin: %s", p);
return false;
}
ao->name = config_get_block_string(param, AUDIO_OUTPUT_NAME,
NULL);
if (ao->name == NULL) {
g_set_error(error_r, audio_output_quark(), 0,
"Missing \"name\" configuration");
return false;
}
p = config_get_block_string(param, AUDIO_OUTPUT_FORMAT,
NULL);
if (p != NULL) {
bool success =
audio_format_parse(&ao->config_audio_format,
p, true, error_r);
if (!success)
return false;
} else
audio_format_clear(&ao->config_audio_format);
} else {
g_warning("No \"%s\" defined in config file\n",
CONF_AUDIO_OUTPUT);
plugin = audio_output_detect(error_r);
if (plugin == NULL)
return false;
g_message("Successfully detected a %s audio device",
plugin->name);
ao->name = "default detected output";
audio_format_clear(&ao->config_audio_format);
}
ao->plugin = plugin;
ao->always_on = config_get_block_bool(param, "always_on", false);
ao->enabled = config_get_block_bool(param, "enabled", true);
ao->really_enabled = false;
ao->open = false;
ao->pause = false;
ao->fail_timer = NULL;
pcm_buffer_init(&ao->cross_fade_buffer);
/* set up the filter chain */
ao->filter = filter_chain_new();
assert(ao->filter != NULL);
/* create the replay_gain filter */
const char *replay_gain_handler =
config_get_block_string(param, "replay_gain_handler",
"software");
if (strcmp(replay_gain_handler, "none") != 0) {
ao->replay_gain_filter = filter_new(&replay_gain_filter_plugin,
param, NULL);
assert(ao->replay_gain_filter != NULL);
ao->replay_gain_serial = 0;
ao->other_replay_gain_filter = filter_new(&replay_gain_filter_plugin,
param, NULL);
assert(ao->other_replay_gain_filter != NULL);
ao->other_replay_gain_serial = 0;
} else {
ao->replay_gain_filter = NULL;
ao->other_replay_gain_filter = NULL;
}
/* create the normalization filter (if configured) */
if (config_get_bool(CONF_VOLUME_NORMALIZATION, false)) {
struct filter *normalize_filter =
filter_new(&normalize_filter_plugin, NULL, NULL);
assert(normalize_filter != NULL);
filter_chain_append(ao->filter,
autoconvert_filter_new(normalize_filter));
}
filter_chain_parse(ao->filter,
config_get_block_string(param, AUDIO_FILTERS, ""),
&error
);
// It's not really fatal - Part of the filter chain has been set up already
// and even an empty one will work (if only with unexpected behaviour)
if (error != NULL) {
g_warning("Failed to initialize filter chain for '%s': %s",
ao->name, error->message);
g_error_free(error);
}
ao->thread = NULL;
ao->command = AO_COMMAND_NONE;
ao->mutex = g_mutex_new();
ao->cond = g_cond_new();
ao->data = ao_plugin_init(plugin,
&ao->config_audio_format,
param, error_r);
if (ao->data == NULL)
return false;
ao->mixer = audio_output_load_mixer(ao->data, param,
plugin->mixer_plugin,
ao->filter, &error);
if (ao->mixer == NULL && error != NULL) {
g_warning("Failed to initialize hardware mixer for '%s': %s",
ao->name, error->message);
g_error_free(error);
}
/* use the hardware mixer for replay gain? */
if (strcmp(replay_gain_handler, "mixer") == 0) {
if (ao->mixer != NULL)
replay_gain_filter_set_mixer(ao->replay_gain_filter,
ao->mixer, 100);
else
g_warning("No such mixer for output '%s'", ao->name);
} else if (strcmp(replay_gain_handler, "software") != 0 &&
ao->replay_gain_filter != NULL) {
g_set_error(error_r, audio_output_quark(), 0,
"Invalid \"replay_gain_handler\" value");
return false;
}
/* the "convert" filter must be the last one in the chain */
ao->convert_filter = filter_new(&convert_filter_plugin, NULL, NULL);
assert(ao->convert_filter != NULL);
filter_chain_append(ao->filter, ao->convert_filter);
/* done */
return true;
}