int main(int argc, char **argv)
{
GError *error = NULL;
struct audio_format audio_format;
bool ret;
const char *encoder_name;
const struct encoder_plugin *plugin;
struct encoder *encoder;
struct config_param *param;
static char buffer[32768];
ssize_t nbytes;
/* parse command line */
if (argc > 3) {
g_printerr("Usage: run_encoder [ENCODER] [FORMAT] <IN >OUT\n");
return 1;
}
if (argc > 1)
encoder_name = argv[1];
else
encoder_name = "vorbis";
audio_format_init(&audio_format, 44100, SAMPLE_FORMAT_S16, 2);
/* create the encoder */
plugin = encoder_plugin_get(encoder_name);
if (plugin == NULL) {
g_printerr("No such encoder: %s\n", encoder_name);
return 1;
}
param = config_new_param(NULL, -1);
config_add_block_param(param, "quality", "5.0", -1);
encoder = encoder_init(plugin, param, &error);
if (encoder == NULL) {
g_printerr("Failed to initialize encoder: %s\n",
error->message);
g_error_free(error);
return 1;
}
/* open the encoder */
if (argc > 2) {
ret = audio_format_parse(&audio_format, argv[2],
false, &error);
if (!ret) {
g_printerr("Failed to parse audio format: %s\n",
error->message);
g_error_free(error);
return 1;
}
}
ret = encoder_open(encoder, &audio_format, &error);
if (encoder == NULL) {
g_printerr("Failed to open encoder: %s\n",
error->message);
g_error_free(error);
return 1;
}
/* do it */
while ((nbytes = read(0, buffer, sizeof(buffer))) > 0) {
ret = encoder_write(encoder, buffer, nbytes, &error);
if (!ret) {
g_printerr("encoder_write() failed: %s\n",
error->message);
g_error_free(error);
return 1;
}
encoder_to_stdout(encoder);
}
ret = encoder_flush(encoder, &error);
if (!ret) {
g_printerr("encoder_flush() failed: %s\n",
error->message);
g_error_free(error);
return 1;
}
encoder_to_stdout(encoder);
}
int main(int argc, char **argv)
{
struct audio_format audio_format;
struct audio_format_string af_string;
bool success;
GError *error = NULL;
struct filter *filter;
const struct audio_format *out_audio_format;
char buffer[4096];
size_t frame_size;
if (argc < 3 || argc > 4) {
g_printerr("Usage: run_filter CONFIG NAME [FORMAT] <IN\n");
return 1;
}
audio_format_init(&audio_format, 44100, SAMPLE_FORMAT_S16, 2);
/* initialize GLib */
g_thread_init(NULL);
g_log_set_default_handler(my_log_func, NULL);
/* read configuration file (mpd.conf) */
config_global_init();
success = config_read_file(argv[1], &error);
if (!success) {
g_printerr("%s:", error->message);
g_error_free(error);
return 1;
}
/* parse the audio format */
if (argc > 3) {
success = audio_format_parse(&audio_format, argv[3],
false, &error);
if (!success) {
g_printerr("Failed to parse audio format: %s\n",
error->message);
g_error_free(error);
return 1;
}
}
/* initialize the filter */
filter = load_filter(argv[2]);
if (filter == NULL)
return 1;
/* open the filter */
out_audio_format = filter_open(filter, &audio_format, &error);
if (out_audio_format == NULL) {
g_printerr("Failed to open filter: %s\n", error->message);
g_error_free(error);
filter_free(filter);
return 1;
}
g_printerr("audio_format=%s\n",
audio_format_to_string(out_audio_format, &af_string));
frame_size = audio_format_frame_size(&audio_format);
/* play */
while (true) {
ssize_t nbytes;
size_t length;
const void *dest;
nbytes = read(0, buffer, sizeof(buffer));
if (nbytes <= 0)
break;
dest = filter_filter(filter, buffer, (size_t)nbytes,
&length, &error);
if (dest == NULL) {
g_printerr("Filter failed: %s\n", error->message);
filter_close(filter);
filter_free(filter);
return 1;
}
nbytes = write(1, dest, length);
if (nbytes < 0) {
g_printerr("Failed to write: %s\n", strerror(errno));
filter_close(filter);
filter_free(filter);
return 1;
}
}
/* cleanup and exit */
filter_close(filter);
filter_free(filter);
config_global_finish();
return 0;
}
int main(int argc, char **argv)
{
struct audio_output ao;
struct audio_format audio_format;
struct audio_format_string af_string;
bool success;
GError *error = NULL;
char buffer[4096];
ssize_t nbytes;
size_t frame_size, length = 0, play_length, consumed;
if (argc < 3 || argc > 4) {
g_printerr("Usage: run_output CONFIG NAME [FORMAT] <IN\n");
return 1;
}
audio_format_init(&audio_format, 44100, SAMPLE_FORMAT_S16, 2);
g_thread_init(NULL);
/* read configuration file (mpd.conf) */
config_global_init();
success = config_read_file(argv[1], &error);
if (!success) {
g_printerr("%s:", error->message);
g_error_free(error);
return 1;
}
/* initialize the audio output */
if (!load_audio_output(&ao, argv[2]))
return 1;
/* parse the audio format */
if (argc > 3) {
success = audio_format_parse(&audio_format, argv[3],
false, &error);
if (!success) {
g_printerr("Failed to parse audio format: %s\n",
error->message);
g_error_free(error);
return 1;
}
}
/* open the audio output */
success = ao_plugin_open(ao.plugin, ao.data, &audio_format, &error);
if (!success) {
g_printerr("Failed to open audio output: %s\n",
error->message);
g_error_free(error);
return 1;
}
g_printerr("audio_format=%s\n",
audio_format_to_string(&audio_format, &af_string));
frame_size = audio_format_frame_size(&audio_format);
/* play */
while (true) {
if (length < sizeof(buffer)) {
nbytes = read(0, buffer + length, sizeof(buffer) - length);
if (nbytes <= 0)
break;
length += (size_t)nbytes;
}
play_length = (length / frame_size) * frame_size;
if (play_length > 0) {
consumed = ao_plugin_play(ao.plugin, ao.data,
buffer, play_length,
&error);
if (consumed == 0) {
g_printerr("Failed to play: %s\n",
error->message);
g_error_free(error);
return 1;
}
assert(consumed <= length);
assert(consumed % frame_size == 0);
length -= consumed;
memmove(buffer, buffer + consumed, length);
}
}
/* cleanup and exit */
ao_plugin_close(ao.plugin, ao.data);
ao_plugin_finish(ao.plugin, ao.data);
g_mutex_free(ao.mutex);
config_global_finish();
return 0;
}
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;
}
