mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
042f9d62ca
* qatar/master: configure: Automatically add more flags required on symbian mem.h: switch doxygen parameter order to match function prototype doxygen: replace @sa tag by the more readable but equivalent @see doxygen: use Doxygen markup for authors and web links where appropriate doxygen: do not include license boilerplate in Doxygen documentation ac3enc: Mark AVClasses const ffserver: Replace two loops with one loop. ffmpeg: Fix the check for experimental codecs swscale: extend mmx padding. swscale: clip unscaled colorspace conversion path. doxygen: misc consistency cosmetics doc: remove file name from @file directive in Doxygen usage example doxygen: consistently place brief description doxygen: place empty line between brief description and detailed description avformat_open_input(): Add braces to shut up gcc warning. Conflicts: libavcodec/8svx.c libavcodec/tiff.c libavcodec/tiff.h libavcodec/vaapi_h264.c libavcodec/vorbis.c libavcodec/vorbisdec.c libavcodec/vp6.c libswscale/swscale_unscaled.c libswscale/utils.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
135 lines
4.0 KiB
C
135 lines
4.0 KiB
C
/*
|
|
* Sorenson-3 (SVQ3/SV3V) payload for RTP
|
|
* Copyright (c) 2010 Ronald S. Bultje
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief RTP support for the SV3V (SVQ3) payload
|
|
* @author Ronald S. Bultje <rbultje@ronald.bitfreak.net>
|
|
* @see http://wiki.multimedia.cx/index.php?title=Sorenson_Video_3#Packetization
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "rtp.h"
|
|
#include "rtpdec.h"
|
|
#include "rtpdec_formats.h"
|
|
|
|
struct PayloadContext {
|
|
AVIOContext *pktbuf;
|
|
int64_t timestamp;
|
|
};
|
|
|
|
/** return 0 on packet, <0 on partial packet or error... */
|
|
static int svq3_parse_packet (AVFormatContext *s, PayloadContext *sv,
|
|
AVStream *st, AVPacket *pkt,
|
|
uint32_t *timestamp,
|
|
const uint8_t *buf, int len, int flags)
|
|
{
|
|
int config_packet, start_packet, end_packet;
|
|
|
|
if (len < 2)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
config_packet = buf[0] & 0x40;
|
|
start_packet = buf[0] & 0x20;
|
|
end_packet = buf[0] & 0x10;
|
|
buf += 2; // ignore buf[1]
|
|
len -= 2;
|
|
|
|
if (config_packet) {
|
|
|
|
av_freep(&st->codec->extradata);
|
|
st->codec->extradata_size = 0;
|
|
|
|
if (len < 2 || !(st->codec->extradata =
|
|
av_malloc(len + 8 + FF_INPUT_BUFFER_PADDING_SIZE)))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
st->codec->extradata_size = len + 8;
|
|
memcpy(st->codec->extradata, "SEQH", 4);
|
|
AV_WB32(st->codec->extradata + 4, len);
|
|
memcpy(st->codec->extradata + 8, buf, len);
|
|
|
|
/* We set codec_id to CODEC_ID_NONE initially to
|
|
* delay decoder initialization since extradata is
|
|
* carried within the RTP stream, not SDP. Here,
|
|
* by setting codec_id to CODEC_ID_SVQ3, we are signalling
|
|
* to the decoder that it is OK to initialize. */
|
|
st->codec->codec_id = CODEC_ID_SVQ3;
|
|
|
|
return AVERROR(EAGAIN);
|
|
}
|
|
|
|
if (start_packet) {
|
|
int res;
|
|
|
|
if (sv->pktbuf) {
|
|
uint8_t *tmp;
|
|
avio_close_dyn_buf(sv->pktbuf, &tmp);
|
|
av_free(tmp);
|
|
}
|
|
if ((res = avio_open_dyn_buf(&sv->pktbuf)) < 0)
|
|
return res;
|
|
sv->timestamp = *timestamp;
|
|
}
|
|
|
|
if (!sv->pktbuf)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
avio_write(sv->pktbuf, buf, len);
|
|
|
|
if (end_packet) {
|
|
av_init_packet(pkt);
|
|
pkt->stream_index = st->index;
|
|
*timestamp = sv->timestamp;
|
|
pkt->size = avio_close_dyn_buf(sv->pktbuf, &pkt->data);
|
|
pkt->destruct = av_destruct_packet;
|
|
sv->pktbuf = NULL;
|
|
return 0;
|
|
}
|
|
|
|
return AVERROR(EAGAIN);
|
|
}
|
|
|
|
static PayloadContext *svq3_extradata_new(void)
|
|
{
|
|
return av_mallocz(sizeof(PayloadContext));
|
|
}
|
|
|
|
static void svq3_extradata_free(PayloadContext *sv)
|
|
{
|
|
if (sv->pktbuf) {
|
|
uint8_t *buf;
|
|
avio_close_dyn_buf(sv->pktbuf, &buf);
|
|
av_free(buf);
|
|
}
|
|
av_free(sv);
|
|
}
|
|
|
|
RTPDynamicProtocolHandler ff_svq3_dynamic_handler = {
|
|
.enc_name = "X-SV3V-ES",
|
|
.codec_type = AVMEDIA_TYPE_VIDEO,
|
|
.codec_id = CODEC_ID_NONE, // see if (config_packet) above
|
|
.alloc = svq3_extradata_new,
|
|
.free = svq3_extradata_free,
|
|
.parse_packet = svq3_parse_packet,
|
|
};
|