always export audiostreams

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@7454 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/swf.c

@@ -811,17 +811,13 @@ static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
             get_byte(pb);
             v = get_byte(pb);
             swf->samples_per_frame = get_le16(pb);
-            if (len > 4)
-                url_fskip(pb,len-4);
-            /* if mp3 streaming found, OK */
-            if ((v & 0x20) != 0) {
             ast = av_new_stream(s, 1);
-                if (!ast)
-                    return -ENOMEM;
             av_set_pts_info(ast, 24, 1, 1000); /* 24 bit pts in ms */
-
             ast->codec->channels = 1 + (v&1);
-
+            ast->codec->codec_type = CODEC_TYPE_AUDIO;
+            if (v & 0x20)
+                ast->codec->codec_id = CODEC_ID_MP3;
+            ast->need_parsing = 1;
             switch((v>> 2) & 0x03) {
             case 1:
                 ast->codec->sample_rate = 11025;
@@ -833,13 +829,12 @@ static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
                 ast->codec->sample_rate = 44100;
                 break;
             default:
-                    av_free(ast);
                 return AVERROR_IO;
             }
-                ast->codec->codec_type = CODEC_TYPE_AUDIO;
-                ast->codec->codec_id = CODEC_ID_MP3;
-                ast->need_parsing = 1;
-            }
+
+            if (len > 4)
+                url_fskip(pb,len-4);
+
         } else {
             url_fskip(pb, len);
         }