[SCM] libav/experimental: fix global header passing from demuxer to decoder

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit a03cbe5f7f12682d2c790e0a809dc6edf1bb6f21
Author: Michael Niedermayer <michaelni at gmx.at>
Date:   Sun Apr 4 17:55:59 2004 +0000

    fix global header passing from demuxer to decoder
    
    Originally committed as revision 2958 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/oggvorbis.c b/libavcodec/oggvorbis.c
index c241e8f..1ae3b62 100644
--- a/libavcodec/oggvorbis.c
+++ b/libavcodec/oggvorbis.c
@@ -200,10 +200,29 @@ AVCodec oggvorbis_encoder = {
 
 static int oggvorbis_decode_init(AVCodecContext *avccontext) {
     OggVorbisContext *context = avccontext->priv_data ;
+    uint8_t *p= avccontext->extradata;
+    int i;
 
     vorbis_info_init(&context->vi) ;
     vorbis_comment_init(&context->vc) ;
-    context->op.packetno= 0;
+
+    for(i=0; i<3; i++){
+        context->op.b_o_s= i==0;
+        context->op.bytes= *(p++)<<8;
+        context->op.bytes+=*(p++);
+        context->op.packet= p;
+        p += context->op.bytes;
+
+	if(vorbis_synthesis_headerin(&context->vi, &context->vc, &context->op)<0){
+            av_log(avccontext, AV_LOG_ERROR, "%d. vorbis header damaged\n", i+1);
+            return -1;
+        }
+    }
+    avccontext->channels = context->vi.channels;
+    avccontext->sample_rate = context->vi.rate;
+
+    vorbis_synthesis_init(&context->vd, &context->vi);
+    vorbis_block_init(&context->vd, &context->vb); 
 
     return 0 ;
 }
@@ -251,31 +270,12 @@ static int oggvorbis_decode_frame(AVCodecContext *avccontext,
     
     op->packet = buf;
     op->bytes  = buf_size;
-    op->b_o_s  = op->packetno == 0;
 
 //    av_log(avccontext, AV_LOG_DEBUG, "%d %d %d %lld %lld %d %d\n", op->bytes, op->b_o_s, op->e_o_s, op->granulepos, op->packetno, buf_size, context->vi.rate);
     
 /*    for(i=0; i<op->bytes; i++)
       av_log(avccontext, AV_LOG_DEBUG, "%02X ", op->packet[i]);
     av_log(avccontext, AV_LOG_DEBUG, "\n");*/
-    if(op->packetno < 3) {
-	if(vorbis_synthesis_headerin(&context->vi, &context->vc, op)<0){
-            av_log(avccontext, AV_LOG_ERROR, "%lld. vorbis header damaged\n", op->packetno+1);
-            return -1;
-        }
-	avccontext->channels = context->vi.channels ;
-	avccontext->sample_rate = context->vi.rate ;
-        op->packetno++;
-	return buf_size ;
-    }
-
-    if(op->packetno == 3) {
-//	av_log(avccontext, AV_LOG_INFO, "vorbis_decode: %d channel, %ldHz, encoder `%s'\n",
-//		context->vi.channels, context->vi.rate, context->vc.vendor);
-
-	vorbis_synthesis_init(&context->vd, &context->vi) ;
-	vorbis_block_init(&context->vd, &context->vb); 
-    }
 
     if(vorbis_synthesis(&context->vb, op) == 0)
 	vorbis_synthesis_blockin(&context->vd, &context->vb) ;
@@ -290,7 +290,6 @@ static int oggvorbis_decode_frame(AVCodecContext *avccontext,
         vorbis_synthesis_read(&context->vd, samples) ;
     }
 
-    op->packetno++;
     *data_size = total_bytes ;   
     return buf_size ;
 }
diff --git a/libavformat/ogg.c b/libavformat/ogg.c
index 43d111d..8277d91 100644
--- a/libavformat/ogg.c
+++ b/libavformat/ogg.c
@@ -167,9 +167,13 @@ static int next_packet(AVFormatContext *avfcontext, ogg_packet *op) {
 static int ogg_read_header(AVFormatContext *avfcontext, AVFormatParameters *ap)
 {
     OggContext *context = avfcontext->priv_data;
+    ogg_packet op ;    
     char *buf ;
     ogg_page og ;
     AVStream *ast ;
+    AVCodecContext *codec;
+    uint8_t *p;
+    int i;
      
     avfcontext->ctx_flags |= AVFMTCTX_NOHEADER;
      
@@ -183,16 +187,28 @@ static int ogg_read_header(AVFormatContext *avfcontext, AVFormatParameters *ap)
     ogg_sync_pageout(&context->oy, &og) ;
     ogg_stream_init(&context->os, ogg_page_serialno(&og)) ;
     ogg_stream_pagein(&context->os, &og) ;
-  
+    
     /* currently only one vorbis stream supported */
 
     ast = av_new_stream(avfcontext, 0) ;
     if(!ast)
 	return AVERROR_NOMEM ;
 
-    ast->codec.codec_type = CODEC_TYPE_AUDIO ;
-    ast->codec.codec_id = CODEC_ID_VORBIS ;
-    
+    codec= &ast->codec;
+    codec->codec_type = CODEC_TYPE_AUDIO;
+    codec->codec_id = CODEC_ID_VORBIS;
+    for(i=0; i<3; i++){
+        if(next_packet(avfcontext, &op)){
+            return -1;
+        }
+        codec->extradata_size+= 2 + op.bytes;
+        codec->extradata= av_realloc(codec->extradata, codec->extradata_size);
+        p= codec->extradata + codec->extradata_size - 2 - op.bytes;
+        *(p++)= op.bytes>>8;
+        *(p++)= op.bytes&0xFF;
+        memcpy(p, op.packet, op.bytes);
+    }
+
     return 0 ;
 }
 
@@ -216,6 +232,7 @@ static int ogg_read_close(AVFormatContext *avfcontext) {
 
     ogg_stream_clear(&context->os) ;
     ogg_sync_clear(&context->oy) ;
+    av_freep(&avfcontext->streams[0]->codec.extradata);
 
     return 0 ;
 }

-- 
Libav/FFmpeg packaging