Importing dirac demuxer/muxer from soc branch, patch extracted by Anuradha...

Importing dirac demuxer/muxer from soc branch, patch extracted by Anuradha Suraparaju anuradhaAtrdDoTbbcDoTcoDoTuk

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@13031 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

configure

@@ -844,6 +844,7 @@ audio_beos_muxer_deps="audio_beos"
 audio_beos_muxer_extralibs="-lmedia -lbe"
 avisynth_demuxer_deps="avisynth"
 bktr_demuxer_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
+dirac_demuxer_deps="dirac_parser"
 dv1394_demuxer_deps="dv1394 dv_demuxer"
 libdc1394_demuxer_deps="libdc1394"
 libnut_demuxer_deps="libnut"

libavformat/allformats.c

@@ -69,6 +69,7 @@ void av_register_all(void)
     REGISTER_DEMUXER  (C93, c93);
     REGISTER_MUXER    (CRC, crc);
     REGISTER_DEMUXER  (DAUD, daud);
+    REGISTER_MUXDEMUX (DIRAC, dirac);
     REGISTER_DEMUXER  (DSICIN, dsicin);
     REGISTER_MUXDEMUX (DTS, dts);
     REGISTER_MUXDEMUX (DV, dv);

libavformat/raw.c

@@ -254,6 +254,7 @@ static int video_read_header(AVFormatContext *s,
         av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
     } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
                 st->codec->codec_id == CODEC_ID_MPEG4 ||
+                st->codec->codec_id == CODEC_ID_DIRAC ||
                 st->codec->codec_id == CODEC_ID_H264) {
         av_set_pts_info(st, 64, 1, 25);
     }
@@ -346,6 +347,14 @@ static int h261_probe(AVProbeData *p)
     return 0;
 }
 
+static int dirac_probe(AVProbeData *p)
+{
+    if (AV_RL32(p->buf) == MKTAG('B', 'B', 'C', 'D'))
+        return AVPROBE_SCORE_MAX;
+    else
+        return 0;
+}
+
 static int ac3_probe(AVProbeData *p)
 {
     int max_frames, first_frames = 0, frames;
@@ -470,6 +479,33 @@ AVOutputFormat dts_muxer = {
 
 #endif //CONFIG_MUXERS
 
+AVInputFormat dirac_demuxer = {
+    "dirac",
+    "raw dirac",
+    0,
+    dirac_probe,
+    video_read_header,
+    raw_read_partial_packet,
+    raw_read_close,
+    .flags= AVFMT_GENERIC_INDEX,
+    .value = CODEC_ID_DIRAC,
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat dirac_muxer = {
+    "dirac",
+    "raw dirac",
+    NULL,
+    "drc",
+    0,
+    0,
+    CODEC_ID_DIRAC,
+    NULL,
+    raw_write_packet,
+    .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif
+
 AVInputFormat dts_demuxer = {
     "dts",
     "raw dts",