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authorLuca Abeni <lucabe72@email.it>2010-01-18 13:44:12 +0000
committerLuca Abeni <lucabe72@email.it>2010-01-18 13:44:12 +0000
commit22c1f65fa6d03995be96c107a5bd3b9ee7e54cab (patch)
tree98f9f3ca0f82cd72dfeef3ae358d37e0ecf61761 /libavformat/rtpenc_mpv.c
parentb6ef858ec711b077085dddfb6c4acb151a4ec5be (diff)
downloadffmpeg-22c1f65fa6d03995be96c107a5bd3b9ee7e54cab.tar.gz
Rename the RTP muxer sources so that the packetisation functions are in
rtpenc_*.c files. Originally committed as revision 21284 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat/rtpenc_mpv.c')
-rw-r--r--libavformat/rtpenc_mpv.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/libavformat/rtpenc_mpv.c b/libavformat/rtpenc_mpv.c
new file mode 100644
index 0000000000..b23c8f86e8
--- /dev/null
+++ b/libavformat/rtpenc_mpv.c
@@ -0,0 +1,119 @@
+/*
+ * RTP packetization for MPEG video
+ * Copyright (c) 2002 Fabrice Bellard
+ * Copyright (c) 2007 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
+ */
+
+#include "libavcodec/mpegvideo.h"
+#include "avformat.h"
+#include "rtpenc.h"
+
+/* NOTE: a single frame must be passed with sequence header if
+ needed. XXX: use slices. */
+void ff_rtp_send_mpegvideo(AVFormatContext *s1, const uint8_t *buf1, int size)
+{
+ RTPMuxContext *s = s1->priv_data;
+ int len, h, max_packet_size;
+ uint8_t *q;
+ const uint8_t *end = buf1 + size;
+ int begin_of_slice, end_of_slice, frame_type, temporal_reference;
+
+ max_packet_size = s->max_payload_size;
+ begin_of_slice = 1;
+ end_of_slice = 0;
+ frame_type = 0;
+ temporal_reference = 0;
+
+ while (size > 0) {
+ int begin_of_sequence;
+
+ begin_of_sequence = 0;
+ len = max_packet_size - 4;
+
+ if (len >= size) {
+ len = size;
+ end_of_slice = 1;
+ } else {
+ const uint8_t *r, *r1;
+ int start_code;
+
+ r1 = buf1;
+ while (1) {
+ start_code = -1;
+ r = ff_find_start_code(r1, end, &start_code);
+ if((start_code & 0xFFFFFF00) == 0x100) {
+ /* New start code found */
+ if (start_code == 0x100) {
+ frame_type = (r[1] & 0x38) >> 3;
+ temporal_reference = (int)r[0] << 2 | r[1] >> 6;
+ }
+ if (start_code == 0x1B8) {
+ begin_of_sequence = 1;
+ }
+
+ if (r - buf1 - 4 <= len) {
+ /* The current slice fits in the packet */
+ if (begin_of_slice == 0) {
+ /* no slice at the beginning of the packet... */
+ end_of_slice = 1;
+ len = r - buf1 - 4;
+ break;
+ }
+ r1 = r;
+ } else {
+ if ((r1 - buf1 > 4) && (r - r1 < max_packet_size)) {
+ len = r1 - buf1 - 4;
+ end_of_slice = 1;
+ }
+ break;
+ }
+ } else {
+ break;
+ }
+ }
+ }
+
+ h = 0;
+ h |= temporal_reference << 16;
+ h |= begin_of_sequence << 13;
+ h |= begin_of_slice << 12;
+ h |= end_of_slice << 11;
+ h |= frame_type << 8;
+
+ q = s->buf;
+ *q++ = h >> 24;
+ *q++ = h >> 16;
+ *q++ = h >> 8;
+ *q++ = h;
+
+ memcpy(q, buf1, len);
+ q += len;
+
+ /* 90kHz time stamp */
+ s->timestamp = s->cur_timestamp;
+ ff_rtp_send_data(s1, s->buf, q - s->buf, (len == size));
+
+ buf1 += len;
+ size -= len;
+ begin_of_slice = end_of_slice;
+ end_of_slice = 0;
+ }
+}
+
+