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b48b3c2c86
There are two of them, unintuitively enough; the one passed to the encoder should not be the one that gets written to the file. The former maps the input to an ordering which puts paired channels first, while the latter moves the channels to Vorbis order. So add code to calculate both, and we now have properly paired channels where appropriate. https://bugzilla.gnome.org/show_bug.cgi?id=665078
107 lines
3.9 KiB
C
107 lines
3.9 KiB
C
/* GStreamer
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* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "gstopuscommon.h"
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/* http://www.xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-800004.3.9 */
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/* copy of the same structure in the vorbis plugin */
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const GstAudioChannelPosition gst_opus_channel_positions[][8] = {
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{ /* Mono */
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GST_AUDIO_CHANNEL_POSITION_FRONT_MONO},
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{ /* Stereo */
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GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
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GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT},
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{ /* Stereo + Centre */
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GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
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GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
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GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT},
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{ /* Quadraphonic */
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GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
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GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
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GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
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GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
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},
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{ /* Stereo + Centre + rear stereo */
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GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
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GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
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GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
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GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
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GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
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},
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{ /* Full 5.1 Surround */
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GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
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GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
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GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
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GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
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GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
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GST_AUDIO_CHANNEL_POSITION_LFE,
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},
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{ /* 6.1 Surround, in Vorbis spec since 2010-01-13 */
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GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
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GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
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GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
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GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
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GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
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GST_AUDIO_CHANNEL_POSITION_REAR_CENTER,
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GST_AUDIO_CHANNEL_POSITION_LFE},
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{ /* 7.1 Surround, in Vorbis spec since 2010-01-13 */
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GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
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GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
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GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
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GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
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GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
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GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
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GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
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GST_AUDIO_CHANNEL_POSITION_LFE},
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};
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const char *gst_opus_channel_names[] = {
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"mono",
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"front left",
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"front right",
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"rear center",
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"rear left",
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"rear right",
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"lfe",
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"front center",
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"front left of center",
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"front right of center",
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"side left",
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"side right",
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"none"
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};
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void
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gst_opus_common_log_channel_mapping_table (GstElement * element,
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GstDebugCategory * category, const char *msg, int n_channels,
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const guint8 * table)
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{
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char s[8 + 256 * 4] = "[ "; /* enough for 256 times "255 " at most */
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int n;
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for (n = 0; n < n_channels; ++n) {
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size_t len = strlen (s);
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snprintf (s + len, sizeof (s) - len, "%d ", table[n]);
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}
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strcat (s, "]");
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GST_CAT_LEVEL_LOG (category, GST_LEVEL_INFO, element, "%s: %s", msg, s);
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}
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