mov header field and compressor name patch by Roine Gustafsson <roine AT users...

mov header field and compressor name patch by Roine Gustafsson <roine AT users DOT sourceforge DOT net>

Originally committed as revision 3885 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/mov.c

@@ -773,6 +773,7 @@ static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
     //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
     int entries, frames_per_sample;
     uint32_t format;
+    uint8_t codec_name[32];
 
     /* for palette traversal */
     int color_depth;
@@ -845,7 +846,11 @@ static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
 #ifdef DEBUG
 	    av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
 #endif
-	    get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
+        get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
+        if (codec_name[0] <= 31) {
+            memcpy(st->codec.codec_name, &codec_name[1],codec_name[0]);
+            st->codec.codec_name[codec_name[0]] = 0;
+        }
 
 	    st->codec.bits_per_sample = get_be16(pb); /* depth */
             st->codec.color_table_id = get_be16(pb); /* colortable id */

libavformat/movenc.c

@@ -451,6 +451,7 @@ const CodecTag codec_movvideo_tags[] = {
 static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track)
 {
     int pos = url_ftell(pb);
+    char compressor_name[32];
     int tag;
 
     put_be32(pb, 0); /* size */
@@ -467,25 +468,28 @@ static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track)
     put_be16(pb, 0); /* Reserved */
     put_be16(pb, 1); /* Data-reference index */
 
-    put_be32(pb, 0); /* Reserved (= 02000c) */
-    put_be32(pb, 0); /* Reserved ("SVis")*/
-    put_be32(pb, 0); /* Reserved */
-    put_be32(pb, 0); /* Reserved (400)*/
+    put_be16(pb, 0); /* Codec stream version */
+    put_be16(pb, 0); /* Codec stream revision (=0) */
+    put_tag(pb, "FFMP"); /* Vendor */
+    if(track->enc->codec_id == CODEC_ID_RAWVIDEO) {
+        put_be32(pb, 0); /* Temporal Quality */
+        put_be32(pb, 0x400); /* Spatial Quality = lossless*/
+    } else {
+        put_be32(pb, 0x200); /* Temporal Quality = normal */
+        put_be32(pb, 0x200); /* Spatial Quality = normal */
+    }
     put_be16(pb, track->enc->width); /* Video width */
     put_be16(pb, track->enc->height); /* Video height */
-    put_be32(pb, 0x00480000); /* Reserved */
-    put_be32(pb, 0x00480000); /* Reserved */
+    put_be32(pb, 0x00480000); /* Horizontal resolution 72dpi */
+    put_be32(pb, 0x00480000); /* Vertical resolution 72dpi */
     put_be32(pb, 0); /* Data size (= 0) */
     put_be16(pb, 1); /* Frame count (= 1) */
     
-    put_be32(pb, 0); /* Reserved */
-    put_be32(pb, 0); /* Reserved */
-    put_be32(pb, 0); /* Reserved */
-    put_be32(pb, 0); /* Reserved */
-    put_be32(pb, 0); /* Reserved */
-    put_be32(pb, 0); /* Reserved */
-    put_be32(pb, 0); /* Reserved */
-    put_be32(pb, 0); /* Reserved */
+    memset(compressor_name,0,32);
+    if (track->enc->codec->name)
+        strncpy(compressor_name,track->enc->codec->name,31);
+    put_byte(pb, FFMAX(strlen(compressor_name),32) );
+    put_buffer(pb, compressor_name, 31);
     
     put_be16(pb, 0x18); /* Reserved */
     put_be16(pb, 0xffff); /* Reserved */