gst/rtp/: Add mappings for multichannel support. Does not completely just work because the getcaps function does not ...

Original commit message from CVS:
* gst/rtp/gstrtpL16depay.c: (gst_rtp_L16_depay_setcaps):
* gst/rtp/gstrtpL16pay.c: (gst_rtp_L16_pay_setcaps),
(gst_rtp_L16_pay_getcaps):
* gst/rtp/gstrtpchannels.c: (check_channels),
(gst_rtp_channels_get_by_pos), (gst_rtp_channels_get_by_order),
(gst_rtp_channels_create_default):
* gst/rtp/gstrtpchannels.h:
Add mappings for multichannel support. Does not completely just work
because the getcaps function does not yet return the allowed channel
mappings. See #556641.

1 files changed, 185 insertions, 0 deletions

diff --git a/gst/rtp/gstrtpchannels.h b/gst/rtp/gstrtpchannels.h
new file mode 100644
index 00000000..2c9efe38
--- /dev/null
+++ b/gst/rtp/gstrtpchannels.h
@@ -0,0 +1,185 @@
+/* GStreamer
+ * Copyright (C) <2008> Wim Taymans <wim.taymans@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+
+#include <gst/audio/audio.h>
+#include <gst/audio/multichannel.h>
+
+typedef struct
+{
+  const gchar                   *name;
+  gint                           channels;
+  const GstAudioChannelPosition *pos;
+} GstRTPChannelOrder;
+
+static const GstAudioChannelPosition pos_4_1[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT
+};
+
+static const GstAudioChannelPosition pos_4_2[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_LFE
+};
+
+static const GstAudioChannelPosition pos_4_3[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_LFE
+};
+
+static const GstAudioChannelPosition pos_5_1[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER
+};
+
+static const GstAudioChannelPosition pos_6_1[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_LFE
+};
+
+static const GstAudioChannelPosition pos_6_2[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_LFE,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT
+};
+
+static const GstAudioChannelPosition pos_8_1[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_LFE,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT
+};
+
+static const GstAudioChannelPosition pos_8_2[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_LFE,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT
+};
+
+static const GstAudioChannelPosition pos_8_3[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_LFE,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT
+};
+
+static const GstAudioChannelPosition pos_def_1[] = {
+  GST_AUDIO_CHANNEL_POSITION_NONE
+};
+
+static const GstAudioChannelPosition pos_def_2[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT
+};
+
+static const GstAudioChannelPosition pos_def_3[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER
+};
+
+static const GstAudioChannelPosition pos_def_4[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_LFE
+};
+
+static const GstAudioChannelPosition pos_def_5[] = {
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT
+};
+
+static const GstAudioChannelPosition pos_def_6[] = {
+  GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
+  GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+  GST_AUDIO_CHANNEL_POSITION_LFE
+};
+
+static const GstRTPChannelOrder channel_orders[] =
+{
+  /* 4 channels */
+  { "DV.LRLsRs",            4, pos_4_1 },
+  { "DV.LRCS",              4, pos_4_2 },
+  { "DV.LRCWo",             4, pos_4_3 },
+  /* 5 channels */
+  { "DV.LRLsRsC",           5, pos_5_1 },
+  /* 6 channels */
+  { "DV.LRLsRsCS",          6, pos_6_1 },
+  { "DV.LmixRmixTWoQ1Q2",   6, pos_6_2 },
+  /* 8 channels */
+  { "DV.LRCWoLsRsLmixRmix", 8, pos_8_1 },
+  { "DV.LRCWoLs1Rs1Ls2Rs2", 8, pos_8_2 },
+  { "DV.LRCWoLsRsLcRc",     8, pos_8_3 },
+
+  /* default layouts */
+  { NULL,                   1, pos_def_1 },
+  { NULL,                   2, pos_def_2 },
+  { NULL,                   3, pos_def_3 },
+  { NULL,                   4, pos_def_4 },
+  { NULL,                   5, pos_def_5 },
+  { NULL,                   6, pos_def_6 },
+
+  /* terminator, invalid entry */
+  { NULL,                   0, NULL },
+};
+
+const GstRTPChannelOrder *   gst_rtp_channels_get_by_pos     (gint channels,
+                                                              const GstAudioChannelPosition *pos);
+const GstRTPChannelOrder *   gst_rtp_channels_get_by_order   (gint channels,
+                                                              const gchar *order);
+
+GstAudioChannelPosition *    gst_rtp_channels_create_default (gint channels);