libavformat: add support for G726 audio decoder in RTP and RTSP streams

Fixes Ticket611

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 94 insertions, 0 deletions

diff --git a/libavformat/rtpdec_g726.c b/libavformat/rtpdec_g726.c
new file mode 100644
index 0000000000..cde832b21a
--- /dev/null
+++ b/libavformat/rtpdec_g726.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2011 Miroslav Slugeň <Thunder.m@seznam.cz>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "avformat.h"
+#include "rtpdec_formats.h"
+
+static int g726_16_parse_sdp_line(AVFormatContext *s, int st_index,
+                              PayloadContext *data, const char *line)
+{
+    AVStream *stream = s->streams[st_index];
+    AVCodecContext *codec = stream->codec;
+
+    codec->bit_rate = 16000;
+
+    return 0;
+}
+
+static int g726_24_parse_sdp_line(AVFormatContext *s, int st_index,
+                              PayloadContext *data, const char *line)
+{
+    AVStream *stream = s->streams[st_index];
+    AVCodecContext *codec = stream->codec;
+
+    codec->bit_rate = 24000;
+
+    return 0;
+}
+
+static int g726_32_parse_sdp_line(AVFormatContext *s, int st_index,
+                              PayloadContext *data, const char *line)
+{
+    AVStream *stream = s->streams[st_index];
+    AVCodecContext *codec = stream->codec;
+
+    codec->bit_rate = 32000;
+
+    return 0;
+}
+
+static int g726_40_parse_sdp_line(AVFormatContext *s, int st_index,
+                              PayloadContext *data, const char *line)
+{
+    AVStream *stream = s->streams[st_index];
+    AVCodecContext *codec = stream->codec;
+
+    codec->bit_rate = 40000;
+
+    return 0;
+}
+
+RTPDynamicProtocolHandler ff_g726_16_dynamic_handler = {
+    .enc_name         = "G726-16",
+    .codec_type       = AVMEDIA_TYPE_AUDIO,
+    .codec_id         = CODEC_ID_ADPCM_G726,
+    .parse_sdp_a_line = g726_16_parse_sdp_line,
+};
+
+RTPDynamicProtocolHandler ff_g726_24_dynamic_handler = {
+    .enc_name         = "G726-24",
+    .codec_type       = AVMEDIA_TYPE_AUDIO,
+    .codec_id         = CODEC_ID_ADPCM_G726,
+    .parse_sdp_a_line = g726_24_parse_sdp_line,
+};
+
+RTPDynamicProtocolHandler ff_g726_32_dynamic_handler = {
+    .enc_name         = "G726-32",
+    .codec_type       = AVMEDIA_TYPE_AUDIO,
+    .codec_id         = CODEC_ID_ADPCM_G726,
+    .parse_sdp_a_line = g726_32_parse_sdp_line,
+};
+
+RTPDynamicProtocolHandler ff_g726_40_dynamic_handler = {
+    .enc_name         = "G726-40",
+    .codec_type       = AVMEDIA_TYPE_AUDIO,
+    .codec_id         = CODEC_ID_ADPCM_G726,
+    .parse_sdp_a_line = g726_40_parse_sdp_line,
+};