mpeg12dec: reset first_field with picture_structure changes.

[ffmpeg] / libavformat / cdg.c

diff --git a/libavformat/cdg.c b/libavformat/cdg.c
index b547bbeebe1026c31e1227ee6f4c78d3c2eae4fd..09ba87b060f32080c7f2127e4233681b03bf7493 100644 (file)
--- a/libavformat/cdg.c
+++ b/libavformat/cdg.c
@@ -20,15 +20,18 @@
  */
 
 #include "avformat.h"
+#include "internal.h"
 
 #define CDG_PACKET_SIZE    24
+#define CDG_COMMAND        0x09
+#define CDG_MASK           0x3F
 
 static int read_header(AVFormatContext *s, AVFormatParameters *ap)
 {
     AVStream *vst;
     int ret;
 
-    vst = av_new_stream(s, 0);
+    vst = avformat_new_stream(s, NULL);
     if (!vst)
         return AVERROR(ENOMEM);
 
@@ -36,7 +39,7 @@ static int read_header(AVFormatContext *s, AVFormatParameters *ap)
     vst->codec->codec_id   = CODEC_ID_CDGRAPHICS;
 
     /// 75 sectors/sec * 4 packets/sector = 300 packets/sec
-    av_set_pts_info(vst, 32, 1, 300);
+    avpriv_set_pts_info(vst, 32, 1, 300);
 
     ret = avio_size(s->pb);
     if (ret > 0)
@@ -49,9 +52,19 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
 {
     int ret;
 
-    ret = av_get_packet(s->pb, pkt, CDG_PACKET_SIZE);
+    while (1) {
+        ret = av_get_packet(s->pb, pkt, CDG_PACKET_SIZE);
+        if (ret < 1 || (pkt->data[0] & CDG_MASK) == CDG_COMMAND)
+            break;
+        av_free_packet(pkt);
+    }
 
     pkt->stream_index = 0;
+    pkt->dts=pkt->pts= s->streams[0]->cur_dts;
+
+    if(ret>5 && (pkt->data[0]&0x3F) == 9 && (pkt->data[1]&0x3F)==1 && !(pkt->data[2+2+1] & 0x0F)){
+        pkt->flags = AV_PKT_FLAG_KEY;
+    }
     return ret;
 }
 
@@ -60,5 +73,6 @@ AVInputFormat ff_cdg_demuxer = {
     .long_name      = NULL_IF_CONFIG_SMALL("CD Graphics Format"),
     .read_header    = read_header,
     .read_packet    = read_packet,
+    .flags= AVFMT_GENERIC_INDEX,
     .extensions = "cdg"
 };