From d77f4afa9814b0433be6fdbfd7d8a113592ba680 Mon Sep 17 00:00:00 2001 From: Martin Storsjö Date: Mon, 28 May 2012 12:11:26 +0300 Subject: rtpenc: Allow requesting H264 RTP packetization mode 0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This requires all NAL units to fit within single RTP packets. It doesn't change the actual packetization for packets that fit, but errors out and gives a helpful hint if the NAL units would have to be split, and signals the right packetization mode in the SDP. Signed-off-by: Martin Storsjö --- libavformat/rtpenc.h | 2 ++ libavformat/rtpenc_h264.c | 6 ++++++ libavformat/sdp.c | 11 ++++++++--- libavformat/version.h | 2 +- 4 files changed, 17 insertions(+), 4 deletions(-) (limited to 'libavformat') diff --git a/libavformat/rtpenc.h b/libavformat/rtpenc.h index b8a3fd1ad4..f81cc7a6b8 100644 --- a/libavformat/rtpenc.h +++ b/libavformat/rtpenc.h @@ -66,12 +66,14 @@ typedef struct RTPMuxContext RTPMuxContext; #define FF_RTP_FLAG_MP4A_LATM 1 #define FF_RTP_FLAG_RFC2190 2 #define FF_RTP_FLAG_SKIP_RTCP 4 +#define FF_RTP_FLAG_H264_MODE0 8 #define FF_RTP_FLAG_OPTS(ctx, fieldname) \ { "rtpflags", "RTP muxer flags", offsetof(ctx, fieldname), AV_OPT_TYPE_FLAGS, {.dbl = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "rtpflags" }, \ { "latm", "Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC", 0, AV_OPT_TYPE_CONST, {.dbl = FF_RTP_FLAG_MP4A_LATM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "rtpflags" }, \ { "rfc2190", "Use RFC 2190 packetization instead of RFC 4629 for H.263", 0, AV_OPT_TYPE_CONST, {.dbl = FF_RTP_FLAG_RFC2190}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "rtpflags" }, \ { "skip_rtcp", "Don't send RTCP sender reports", 0, AV_OPT_TYPE_CONST, {.dbl = FF_RTP_FLAG_SKIP_RTCP}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "rtpflags" }, \ + { "h264_mode0", "Use mode 0 for H264 in RTP", 0, AV_OPT_TYPE_CONST, {.dbl = FF_RTP_FLAG_H264_MODE0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "rtpflags" }, \ void ff_rtp_send_data(AVFormatContext *s1, const uint8_t *buf1, int len, int m); diff --git a/libavformat/rtpenc_h264.c b/libavformat/rtpenc_h264.c index 776da83a62..ac74074307 100644 --- a/libavformat/rtpenc_h264.c +++ b/libavformat/rtpenc_h264.c @@ -55,6 +55,12 @@ static void nal_send(AVFormatContext *s1, const uint8_t *buf, int size, int last uint8_t type = buf[0] & 0x1F; uint8_t nri = buf[0] & 0x60; + if (s->flags & FF_RTP_FLAG_H264_MODE0) { + av_log(s1, AV_LOG_ERROR, + "NAL size %d > %d, try -slice-max-size %d\n", size, + s->max_payload_size, s->max_payload_size); + return; + } av_log(s1, AV_LOG_DEBUG, "NAL size %d > %d\n", size, s->max_payload_size); s->buf[0] = 28; /* FU Indicator; Type = 28 ---> FU-A */ s->buf[0] |= nri; diff --git a/libavformat/sdp.c b/libavformat/sdp.c index 9692aabbc0..7df8b13b67 100644 --- a/libavformat/sdp.c +++ b/libavformat/sdp.c @@ -388,15 +388,20 @@ static char *sdp_write_media_attributes(char *buff, int size, AVCodecContext *c, char *config = NULL; switch (c->codec_id) { - case CODEC_ID_H264: + case CODEC_ID_H264: { + int mode = 1; + if (fmt && fmt->oformat->priv_class && + av_opt_flag_is_set(fmt->priv_data, "rtpflags", "h264_mode0")) + mode = 0; if (c->extradata_size) { config = extradata2psets(c); } av_strlcatf(buff, size, "a=rtpmap:%d H264/90000\r\n" - "a=fmtp:%d packetization-mode=1%s\r\n", + "a=fmtp:%d packetization-mode=%d%s\r\n", payload_type, - payload_type, config ? config : ""); + payload_type, mode, config ? config : ""); break; + } case CODEC_ID_H263: case CODEC_ID_H263P: /* a=framesize is required by 3GPP TS 26.234 (PSS). It diff --git a/libavformat/version.h b/libavformat/version.h index aae0eb1d70..e1703319b6 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -31,7 +31,7 @@ #define LIBAVFORMAT_VERSION_MAJOR 54 #define LIBAVFORMAT_VERSION_MINOR 4 -#define LIBAVFORMAT_VERSION_MICRO 0 +#define LIBAVFORMAT_VERSION_MICRO 1 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ LIBAVFORMAT_VERSION_MINOR, \ -- cgit v1.2.3