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authorLuca Abeni <lucabe72@email.it>2008-01-21 14:01:57 +0000
committerLuca Abeni <lucabe72@email.it>2008-01-21 14:01:57 +0000
commitf79bfe481d48cd9a24f2241bd25e59897f878ab8 (patch)
treeeaca43d929fd5ce98d9ce496a8df17b170bd3f97
parentafecbec22b029d5b83a7ac4d5691b121743a4cd9 (diff)
downloadffmpeg-f79bfe481d48cd9a24f2241bd25e59897f878ab8.tar.gz
Add support for H.264 video in the RTP muxer
Originally committed as revision 11589 to svn://svn.ffmpeg.org/ffmpeg/trunk
-rw-r--r--libavformat/Makefile7
-rw-r--r--libavformat/rtp_h264.h1
-rw-r--r--libavformat/rtpenc.c4
-rw-r--r--libavformat/rtpenc_h264.c78
4 files changed, 89 insertions, 1 deletions
diff --git a/libavformat/Makefile b/libavformat/Makefile
index f8cde32e7a..2224ba0c27 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -139,7 +139,12 @@ OBJS-$(CONFIG_RM_DEMUXER) += rmdec.o
OBJS-$(CONFIG_RM_MUXER) += rmenc.o
OBJS-$(CONFIG_ROQ_DEMUXER) += idroq.o
OBJS-$(CONFIG_ROQ_MUXER) += raw.o
-OBJS-$(CONFIG_RTP_MUXER) += rtp.o rtpenc.o rtp_mpv.o rtp_aac.o
+OBJS-$(CONFIG_RTP_MUXER) += rtp.o \
+ rtpenc.o \
+ rtp_mpv.o \
+ rtp_aac.o \
+ rtpenc_h264.o \
+ avc.o
OBJS-$(CONFIG_RTSP_DEMUXER) += rtsp.o
OBJS-$(CONFIG_SDP_DEMUXER) += rtsp.o rtp.o rtpdec.o rtp_h264.o
OBJS-$(CONFIG_SEGAFILM_DEMUXER) += segafilm.o
diff --git a/libavformat/rtp_h264.h b/libavformat/rtp_h264.h
index 57fc5325ea..f5acfc8947 100644
--- a/libavformat/rtp_h264.h
+++ b/libavformat/rtp_h264.h
@@ -25,5 +25,6 @@
#include "rtp_internal.h"
extern RTPDynamicProtocolHandler ff_h264_dynamic_handler;
+void ff_rtp_send_h264(AVFormatContext *s1, uint8_t *buf1, int size);
#endif /* FFMPEG_RTP_H264_H */
diff --git a/libavformat/rtpenc.c b/libavformat/rtpenc.c
index 291d474204..9e62c6571f 100644
--- a/libavformat/rtpenc.c
+++ b/libavformat/rtpenc.c
@@ -28,6 +28,7 @@
#include "rtp_internal.h"
#include "rtp_mpv.h"
#include "rtp_aac.h"
+#include "rtp_h264.h"
//#define DEBUG
@@ -334,6 +335,9 @@ static int rtp_write_packet(AVFormatContext *s1, AVPacket *pkt)
case CODEC_ID_MPEG2TS:
rtp_send_mpegts_raw(s1, buf1, size);
break;
+ case CODEC_ID_H264:
+ ff_rtp_send_h264(s1, buf1, size);
+ break;
default:
/* better than nothing : send the codec raw data */
rtp_send_raw(s1, buf1, size);
diff --git a/libavformat/rtpenc_h264.c b/libavformat/rtpenc_h264.c
new file mode 100644
index 0000000000..cf054d752b
--- /dev/null
+++ b/libavformat/rtpenc_h264.c
@@ -0,0 +1,78 @@
+/*
+ * RTP packetization for H.264 (RFC3984)
+ * Copyright (c) 2008 Luca Abeni.
+ *
+ * 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 rtpenc_h264.c
+ * @brief H.264 packetization
+ * @author Luca Abeni <lucabe72@email.it>
+ */
+
+#include "avformat.h"
+#include "avc.h"
+#include "rtp_h264.h"
+
+static void nal_send(AVFormatContext *s1, const uint8_t *buf, int size, int last)
+{
+ RTPDemuxContext *s = s1->priv_data;
+
+ av_log(s1, AV_LOG_DEBUG, "Sending NAL %x of len %d M=%d\n", buf[0] & 0x1F, size, last);
+ if (size <= s->max_payload_size) {
+ ff_rtp_send_data(s1, buf, size, last);
+ } else {
+ uint8_t type = buf[0] & 0x1F;
+ uint8_t nri = buf[0] & 0x60;
+
+ 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;
+ s->buf[1] = type;
+ s->buf[1] |= 1 << 7;
+ buf += 1;
+ size -= 1;
+ while (size + 2 > s->max_payload_size) {
+ memcpy(&s->buf[2], buf, s->max_payload_size - 2);
+ ff_rtp_send_data(s1, s->buf, s->max_payload_size, 0);
+ buf += s->max_payload_size - 2;
+ size -= s->max_payload_size - 2;
+ s->buf[1] &= ~(1 << 7);
+ }
+ s->buf[1] |= 1 << 6;
+ memcpy(&s->buf[2], buf, size);
+ ff_rtp_send_data(s1, s->buf, size + 2, 1);
+ }
+}
+
+void ff_rtp_send_h264(AVFormatContext *s1, uint8_t *buf1, int size)
+{
+ uint8_t *r;
+ RTPDemuxContext *s = s1->priv_data;
+
+ s->timestamp = s->cur_timestamp;
+ r = ff_avc_find_startcode(buf1, buf1 + size);
+ while (r < buf1 + size) {
+ uint8_t *r1;
+
+ while(!*(r++));
+ r1 = ff_avc_find_startcode(r, buf1 + size);
+ nal_send(s1, r, r1 - r, (r1 == buf1 + size));
+ r = r1;
+ }
+}