mirror of
https://gitlab.gnome.org/GNOME/calls.git
synced 2024-07-07 09:29:30 +00:00
7d113d4180
static capabilities are now supporting multiple codecs and generate correct SDP messages. This only relates to SDP offers. When we are answering an offer we must take the offer from the other party into account when creating the answer. Hence why we differentiate between "static" and "dynamic" (not implemented yet) capability strings.
82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/*
|
|
* Copyright (C) 2021 Purism SPC
|
|
*
|
|
* This file is part of Calls.
|
|
*
|
|
* Calls is free software: you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Calls 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
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Calls. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Author: Evangelos Ribeiro Tzaras <evangelos.tzaras@puri.sm>
|
|
*
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
|
*
|
|
*/
|
|
|
|
#include "gst-rfc3551.h"
|
|
|
|
#include <glib.h>
|
|
|
|
/* Use the following codecs in order of preference */
|
|
static MediaCodecInfo gst_codecs[] = {
|
|
{"8", "PCMA", "8000", 1, "rtppcmapay", "rtppcmadepay", "alawenc", "alawdec"},
|
|
{"0", "PCMU", "8000", 1, "rtppcmupay", "rtppcmudepay", "mulawenc", "mulawdec"},
|
|
{"3", "GSM", "8000", 1, "rtpgsmpay", "rtpgsmdepay", "gsmenc", "gsmdec"},
|
|
{"9", "G722", "8000", 1, "rtpg722pay", "rtpg722depay", "avenc_g722", "avdec_g722"},
|
|
{"4", "G723", "8000", 1, "rtpg723pay", "rtpg723depay", "avenc_g723_1", "avdec_g723_1"}, // does not seem to work
|
|
};
|
|
|
|
|
|
static gboolean
|
|
media_codec_available_in_gst (MediaCodecInfo *codec) {
|
|
/* TODO probe available plugins in GStreamer */
|
|
return TRUE;
|
|
}
|
|
|
|
MediaCodecInfo *
|
|
media_codec_by_name (const char *name)
|
|
{
|
|
g_return_val_if_fail (name, NULL);
|
|
|
|
for (guint i = 0; i < G_N_ELEMENTS (gst_codecs); i++) {
|
|
if (g_strcmp0 (name, gst_codecs[i].name) == 0)
|
|
return &gst_codecs[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
gchar *
|
|
media_codec_get_gst_capabilities (MediaCodecInfo *codec)
|
|
{
|
|
return g_strdup_printf ("application/x-rtp,media=(string)audio,clock-rate=(int)%s"
|
|
",encoding-name=(string)%s,payload=(int)%s",
|
|
codec->clock_rate,
|
|
codec->name,
|
|
codec->payload_id);
|
|
}
|
|
|
|
GList *
|
|
media_codecs_get_candidates ()
|
|
{
|
|
GList *candidates = NULL;
|
|
|
|
for (guint i = 0; i < G_N_ELEMENTS (gst_codecs); i++) {
|
|
if (media_codec_available_in_gst (&gst_codecs[i])) {
|
|
g_debug ("Adding %s to the codec candidates", gst_codecs[i].name);
|
|
candidates = g_list_append (candidates, &gst_codecs[i]);
|
|
}
|
|
}
|
|
|
|
return candidates;
|
|
}
|