ffmdec: evil compat hacks to keep it working when using the deprecated st->codec

FATE changes to accomodate a few changed codec properties

Author: Nevcairiel

libavformat/ffmdec.c

@@ -283,7 +283,7 @@ static int ffm2_read_header(AVFormatContext *s)
     AVIOContext *pb = s->pb;
     AVCodecContext *codec;
     const AVCodecDescriptor *codec_desc;
-    int ret;
+    int ret, i;
     int f_main = 0, f_cprv = -1, f_stvi = -1, f_stau = -1;
     AVCodec *enc;
     char *buffer;
@@ -356,8 +356,12 @@ static int ffm2_read_header(AVFormatContext *s)
             codec->flags2 = avio_rb32(pb);
             codec->debug = avio_rb32(pb);
             if (codec->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
-                if (ff_get_extradata(codec, pb, avio_rb32(pb)) < 0)
+                int size = avio_rb32(pb);
+                codec->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
+                if (!codec->extradata)
                     return AVERROR(ENOMEM);
+                codec->extradata_size = size;
+                avio_read(pb, codec->extradata, size);
             }
             break;
         case MKBETAG('S', 'T', 'V', 'I'):
@@ -476,6 +480,9 @@ static int ffm2_read_header(AVFormatContext *s)
         avio_seek(pb, next, SEEK_SET);
     }
 
+    for (i = 0; i < s->nb_streams; i++)
+        avcodec_parameters_from_context(s->streams[i]->codecpar, s->streams[i]->codec);
+
     /* get until end of block reached */
     while ((avio_tell(pb) % ffm->packet_size) != 0 && !pb->eof_reached)
         avio_r8(pb);
@@ -617,9 +624,15 @@ static int ffm_read_header(AVFormatContext *s)
             goto fail;
         }
         if (codec->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
-            if (ff_get_extradata(codec, pb, avio_rb32(pb)) < 0)
+            int size = avio_rb32(pb);
+            codec->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
+            if (!codec->extradata)
                 return AVERROR(ENOMEM);
+            codec->extradata_size = size;
+            avio_read(pb, codec->extradata, size);
         }
+
+        avcodec_parameters_from_context(st->codecpar, codec);
     }
 
     /* get until end of block reached */

tests/ref/lavf/ffm

@@ -1,3 +1,3 @@
-e63c16b5f0ad5015304fc4009fdb33ca *./tests/data/lavf/lavf.ffm
+79674a5219d00e1d2221a29157b35eb4 *./tests/data/lavf/lavf.ffm
 376832 ./tests/data/lavf/lavf.ffm
 ./tests/data/lavf/lavf.ffm CRC=0x000e23ae