static gboolean vorbis_play (const gchar * filename, VFSFile * file)
{
if (file == NULL)
return FALSE;
vorbis_info *vi;
OggVorbis_File vf;
gint last_section = -1;
ReplayGainInfo rg_info;
gfloat pcmout[PCM_BUFSIZE*sizeof(float)], **pcm;
gint bytes, channels, samplerate, br;
gchar * title = NULL;
memset(&vf, 0, sizeof(vf));
gboolean error = FALSE;
if (ov_open_callbacks (file, & vf, NULL, 0, vfs_is_streaming (file) ?
vorbis_callbacks_stream : vorbis_callbacks) < 0)
{
error = TRUE;
goto play_cleanup;
}
vi = ov_info(&vf, -1);
if (vi->channels > 2)
goto play_cleanup;
br = vi->bitrate_nominal;
channels = vi->channels;
samplerate = vi->rate;
aud_input_set_bitrate (br);
if (!aud_input_open_audio(FMT_FLOAT, samplerate, channels)) {
error = TRUE;
goto play_cleanup;
}
vorbis_update_replaygain(&vf, &rg_info);
aud_input_set_gain (& rg_info);
/*
* Note that chaining changes things here; A vorbis file may
* be a mix of different channels, bitrates and sample rates.
* You can fetch the information for any section of the file
* using the ov_ interface.
*/
while (! aud_input_check_stop ())
{
int seek_value = aud_input_check_seek();
if (seek_value >= 0 && ov_time_seek (& vf, (double) seek_value / 1000) < 0)
{
fprintf (stderr, "vorbis: seek failed\n");
error = TRUE;
break;
}
gint current_section = last_section;
bytes = ov_read_float(&vf, &pcm, PCM_FRAMES, ¤t_section);
if (bytes == OV_HOLE)
continue;
if (bytes <= 0)
break;
bytes = vorbis_interleave_buffer (pcm, bytes, channels, pcmout);
{ /* try to detect when metadata has changed */
vorbis_comment * comment = ov_comment (& vf, -1);
const gchar * new_title = (comment == NULL) ? NULL :
vorbis_comment_query (comment, "title", 0);
if (new_title != NULL && (title == NULL || strcmp (title, new_title)))
{
g_free (title);
title = g_strdup (new_title);
aud_input_set_tuple (get_tuple_for_vorbisfile (& vf,
filename));
}
}
if (current_section != last_section)
{
/*
* The info struct is different in each section. vf
* holds them all for the given bitstream. This
* requests the current one
*/
vi = ov_info(&vf, -1);
if (vi->channels > 2)
goto stop_processing;
if (vi->rate != samplerate || vi->channels != channels)
{
samplerate = vi->rate;
channels = vi->channels;
if (!aud_input_open_audio(FMT_FLOAT, vi->rate, vi->channels)) {
error = TRUE;
goto stop_processing;
}
vorbis_update_replaygain(&vf, &rg_info);
aud_input_set_gain (& rg_info); /* audio reopened */
}
}
aud_input_write_audio (pcmout, bytes);
stop_processing:
if (current_section != last_section)
{
aud_input_set_bitrate (br);
last_section = current_section;
}
} /* main loop */
play_cleanup:
ov_clear(&vf);
g_free (title);
return ! error;
}
static gboolean vorbis_play (InputPlayback * playback, const gchar * filename,
VFSFile * file, gint start_time, gint stop_time, gboolean pause)
{
if (file == NULL)
return FALSE;
vorbis_info *vi;
OggVorbis_File vf;
gint last_section = -1;
ReplayGainInfo rg_info;
gfloat pcmout[PCM_BUFSIZE*sizeof(float)], **pcm;
gint bytes, channels, samplerate, br;
gchar * title = NULL;
seek_value = (start_time > 0) ? start_time : -1;
stop_flag = FALSE;
memset(&vf, 0, sizeof(vf));
gboolean error = FALSE;
if (ov_open_callbacks (file, & vf, NULL, 0, vfs_is_streaming (file) ?
vorbis_callbacks_stream : vorbis_callbacks) < 0)
{
error = TRUE;
goto play_cleanup;
}
vi = ov_info(&vf, -1);
if (vi->channels > 2)
goto play_cleanup;
br = vi->bitrate_nominal;
channels = vi->channels;
samplerate = vi->rate;
playback->set_params (playback, br, samplerate, channels);
if (!playback->output->open_audio(FMT_FLOAT, samplerate, channels)) {
error = TRUE;
goto play_cleanup;
}
playback->output->flush (start_time);
if (pause)
playback->output->pause (TRUE);
vorbis_update_replaygain(&vf, &rg_info);
playback->output->set_replaygain_info (& rg_info);
playback->set_pb_ready(playback);
/*
* Note that chaining changes things here; A vorbis file may
* be a mix of different channels, bitrates and sample rates.
* You can fetch the information for any section of the file
* using the ov_ interface.
*/
while (1)
{
if (stop_time >= 0 && playback->output->written_time () >= stop_time)
goto DRAIN;
pthread_mutex_lock (& seek_mutex);
if (stop_flag)
{
pthread_mutex_unlock (& seek_mutex);
break;
}
if (seek_value >= 0)
{
ov_time_seek (& vf, (double) seek_value / 1000);
playback->output->flush (seek_value);
seek_value = -1;
}
pthread_mutex_unlock (& seek_mutex);
gint current_section = last_section;
bytes = ov_read_float(&vf, &pcm, PCM_FRAMES, ¤t_section);
if (bytes == OV_HOLE)
continue;
if (bytes <= 0)
{
DRAIN:
break;
}
bytes = vorbis_interleave_buffer (pcm, bytes, channels, pcmout);
{ /* try to detect when metadata has changed */
vorbis_comment * comment = ov_comment (& vf, -1);
const gchar * new_title = (comment == NULL) ? NULL :
vorbis_comment_query (comment, "title", 0);
if (new_title != NULL && (title == NULL || strcmp (title, new_title)))
{
g_free (title);
title = g_strdup (new_title);
playback->set_tuple (playback, get_tuple_for_vorbisfile (& vf,
filename));
}
}
if (current_section != last_section)
{
/*
* The info struct is different in each section. vf
* holds them all for the given bitstream. This
* requests the current one
*/
vi = ov_info(&vf, -1);
if (vi->channels > 2)
goto stop_processing;
if (vi->rate != samplerate || vi->channels != channels)
{
samplerate = vi->rate;
channels = vi->channels;
if (!playback->output->open_audio(FMT_FLOAT, vi->rate, vi->channels)) {
error = TRUE;
goto stop_processing;
}
playback->output->flush(ov_time_tell(&vf) * 1000);
vorbis_update_replaygain(&vf, &rg_info);
playback->output->set_replaygain_info (& rg_info); /* audio reopened */
}
}
playback->output->write_audio (pcmout, bytes);
stop_processing:
if (current_section != last_section)
{
playback->set_params (playback, br, samplerate, channels);
last_section = current_section;
}
} /* main loop */
pthread_mutex_lock (& seek_mutex);
stop_flag = TRUE;
pthread_mutex_unlock (& seek_mutex);
play_cleanup:
ov_clear(&vf);
g_free (title);
return ! error;
}
