int main(int argc, char **argv)
{
GError *error = NULL;
#ifdef HAVE_LOCALE_H
/* initialize locale */
setlocale(LC_CTYPE,"");
#endif
if (argc != 2) {
g_printerr("Usage: read_rva2 FILE\n");
return 1;
}
const char *path = argv[1];
struct id3_tag *tag = tag_id3_load(path, &error);
if (tag == NULL) {
if (error != NULL) {
g_printerr("%s\n", error->message);
g_error_free(error);
} else
g_printerr("No ID3 tag found\n");
return EXIT_FAILURE;
}
struct replay_gain_info replay_gain;
replay_gain_info_init(&replay_gain);
bool success = tag_rva2_parse(tag, &replay_gain);
id3_tag_delete(tag);
if (!success) {
g_printerr("No RVA2 tag found\n");
return EXIT_FAILURE;
}
const struct replay_gain_tuple *tuple =
&replay_gain.tuples[REPLAY_GAIN_ALBUM];
if (replay_gain_tuple_defined(tuple))
g_printerr("replay_gain[album]: gain=%f peak=%f\n",
tuple->gain, tuple->peak);
tuple = &replay_gain.tuples[REPLAY_GAIN_TRACK];
if (replay_gain_tuple_defined(tuple))
g_printerr("replay_gain[track]: gain=%f peak=%f\n",
tuple->gain, tuple->peak);
return EXIT_SUCCESS;
}
/**
* Recalculates the new volume after a property was changed.
*/
static void
replay_gain_filter_update(struct replay_gain_filter *filter)
{
if (filter->mode != REPLAY_GAIN_OFF) {
const struct replay_gain_tuple *tuple =
&filter->info.tuples[filter->mode];
float scale = replay_gain_tuple_defined(tuple)
? replay_gain_tuple_scale(tuple, replay_gain_preamp)
: replay_gain_missing_preamp;
g_debug("scale=%f\n", (double)scale);
filter->volume = pcm_float_to_volume(scale);
} else
filter->volume = PCM_VOLUME_1;
if (filter->mixer != NULL) {
/* update the hardware mixer volume */
unsigned volume = (filter->volume * filter->base) / PCM_VOLUME_1;
if (volume > 100)
volume = 100;
GError *error = NULL;
if (!mixer_set_volume(filter->mixer, volume, &error)) {
g_warning("Failed to update hardware mixer: %s",
error->message);
g_error_free(error);
}
}
}
float
decoder_replay_gain(G_GNUC_UNUSED struct decoder *decoder,
const struct replay_gain_info *replay_gain_info)
{
const struct replay_gain_tuple *tuple =
&replay_gain_info->tuples[REPLAY_GAIN_ALBUM];
if (replay_gain_tuple_defined(tuple))
g_printerr("replay_gain[album]: gain=%f peak=%f\n",
tuple->gain, tuple->peak);
tuple = &replay_gain_info->tuples[REPLAY_GAIN_TRACK];
if (replay_gain_tuple_defined(tuple))
g_printerr("replay_gain[track]: gain=%f peak=%f\n",
tuple->gain, tuple->peak);
return 0.0;
}