ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libavformat/asfenc.c

 /*
  * ASF muxer
  * Copyright (c) 2000, 2001 Fabrice Bellard
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
@@ skipping 185 matching lines @@
 };
 
 #define PREROLL_TIME 3100
 
 static void put_guid(ByteIOContext *s, const ff_asf_guid *g)
 {
     assert(sizeof(*g) == 16);
     put_buffer(s, *g, sizeof(*g));
 }
 
-static void put_str16_nolen(ByteIOContext *s, const char *tag);
+static int put_str16_nolen(ByteIOContext *s, const char *tag)
+{
+    const uint8_t *q = tag;
+    int ret = 0;
+
+    while (*q) {
+        uint32_t ch;
+        uint16_t tmp;
+
+        GET_UTF8(ch, *q++, break;)
+        PUT_UTF16(ch, tmp, put_le16(s, tmp);ret += 2;)
+    }
+    put_le16(s, 0);
+    ret += 2;
+    return ret;
+}
+
 static void put_str16(ByteIOContext *s, const char *tag)
 {
-    put_le16(s,strlen(tag) + 1);
-    put_str16_nolen(s, tag);
-}
+    int len;
+    uint8_t *pb;
+    ByteIOContext *dyn_buf;
+    if (url_open_dyn_buf(&dyn_buf) < 0)
+        return;
 
-static void put_str16_nolen(ByteIOContext *s, const char *tag)
-{
-    int c;
-
-    do{
-        c = (uint8_t)*tag++;
-        put_le16(s, c);
-    }while(c);
+    put_str16_nolen(dyn_buf, tag);
+    len = url_close_dyn_buf(dyn_buf, &pb);
+    put_le16(s, len);
+    put_buffer(s, pb, len);
+    av_freep(&pb);
 }
 
 static int64_t put_header(ByteIOContext *pb, const ff_asf_guid *g)
 {
     int64_t pos;
 
     pos = url_ftell(pb);
     put_guid(pb, g);
     put_le64(pb, 24);
     return pos;
@@ skipping 34 matching lines @@
     t = ti * INT64_C(10000000);
     t += INT64_C(116444736000000000);
     return t;
 }
 
 /* write the header (used two times if non streamed) */
 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
 {
     ASFContext *asf = s->priv_data;
     ByteIOContext *pb = s->pb;
-    AVMetadataTag *title, *author, *copyright, *comment;
+    AVMetadataTag *tags[5];
     int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
     int has_title;
     int metadata_count;
     AVCodecContext *enc;
     int64_t header_offset, cur_pos, hpos;
     int bit_rate;
     int64_t duration;
 
-    title     = av_metadata_get(s->metadata, "title"    , NULL, 0);
-    author    = av_metadata_get(s->metadata, "author"   , NULL, 0);
-    copyright = av_metadata_get(s->metadata, "copyright", NULL, 0);
-    comment   = av_metadata_get(s->metadata, "comment"  , NULL, 0);
+    tags[0] = av_metadata_get(s->metadata, "title"    , NULL, 0);
+    tags[1] = av_metadata_get(s->metadata, "author"   , NULL, 0);
+    tags[2] = av_metadata_get(s->metadata, "copyright", NULL, 0);
+    tags[3] = av_metadata_get(s->metadata, "comment"  , NULL, 0);
+    tags[4] = av_metadata_get(s->metadata, "rating"   , NULL, 0);
 
     duration = asf->duration + PREROLL_TIME * 10000;
-    has_title = title || author || copyright || comment;
+    has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
     metadata_count = s->metadata ? s->metadata->count : 0;
 
     bit_rate = 0;
     for(n=0;n<s->nb_streams;n++) {
         enc = s->streams[n]->codec;
 
         av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
 
         bit_rate += enc->bit_rate;
     }
@@ skipping 27 matching lines @@
 
     /* unknown headers */
     hpos = put_header(pb, &ff_asf_head1_guid);
     put_guid(pb, &ff_asf_head2_guid);
     put_le32(pb, 6);
     put_le16(pb, 0);
     end_header(pb, hpos);
 
     /* title and other infos */
     if (has_title) {
+        int len;
+        uint8_t *buf;
+        ByteIOContext *dyn_buf;
+
+        if (url_open_dyn_buf(&dyn_buf) < 0)
+            return AVERROR(ENOMEM);
+
         hpos = put_header(pb, &ff_asf_comment_header);
-        put_le16(pb, title     ? 2 * (strlen(title->value    ) + 1) : 0);
-        put_le16(pb, author    ? 2 * (strlen(author->value   ) + 1) : 0);
-        put_le16(pb, copyright ? 2 * (strlen(copyright->value) + 1) : 0);
-        put_le16(pb, comment   ? 2 * (strlen(comment->value  ) + 1) : 0);
-        put_le16(pb, 0);
-        if (title    ) put_str16_nolen(pb, title->value    );
-        if (author   ) put_str16_nolen(pb, author->value   );
-        if (copyright) put_str16_nolen(pb, copyright->value);
-        if (comment  ) put_str16_nolen(pb, comment->value  );
+
+        for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
+            len = tags[n] ? put_str16_nolen(dyn_buf, tags[n]->value) : 0;
+            put_le16(pb, len);
+        }
+        len = url_close_dyn_buf(dyn_buf, &buf);
+        put_buffer(pb, buf, len);
+        av_freep(&buf);
         end_header(pb, hpos);
     }
     if (metadata_count) {
         AVMetadataTag *tag = NULL;
         hpos = put_header(pb, &ff_asf_extended_content_header);
         put_le16(pb, metadata_count);
         while ((tag = av_metadata_get(s->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
-            put_le16(pb, 2*(strlen(tag->key) + 3) + 1);
-            put_le16(pb, 'W');
-            put_le16(pb, 'M');
-            put_le16(pb, '/');
-            put_str16_nolen(pb, tag->key);
+            put_str16(pb, tag->key);
             put_le16(pb, 0);
-            put_le16(pb, 2*strlen(tag->value) + 1);
-            put_str16_nolen(pb, tag->value);
+            put_str16(pb, tag->value);
         }
         end_header(pb, hpos);
     }
 
     /* stream headers */
     for(n=0;n<s->nb_streams;n++) {
         int64_t es_pos;
         //        ASFStream *stream = &asf->streams[n];
 
         enc = s->streams[n]->codec;
@@ skipping 69 matching lines @@
         end_header(pb, hpos);
     }
 
     /* media comments */
 
     hpos = put_header(pb, &ff_asf_codec_comment_header);
     put_guid(pb, &ff_asf_codec_comment1_header);
     put_le32(pb, s->nb_streams);
     for(n=0;n<s->nb_streams;n++) {
         AVCodec *p;
+        const char *desc;
+        int len;
+        uint8_t *buf;
+        ByteIOContext *dyn_buf;
 
         enc = s->streams[n]->codec;
         p = avcodec_find_encoder(enc->codec_id);
 
         if(enc->codec_type == CODEC_TYPE_AUDIO)
             put_le16(pb, 2);
         else if(enc->codec_type == CODEC_TYPE_VIDEO)
             put_le16(pb, 1);
         else
             put_le16(pb, -1);
 
         if(enc->codec_id == CODEC_ID_WMAV2)
-            put_str16(pb, "Windows Media Audio V8");
+            desc = "Windows Media Audio V8";
         else
-            put_str16(pb, p ? p->name : enc->codec_name);
+            desc = p ? p->name : enc->codec_name;
+
+        if ( url_open_dyn_buf(&dyn_buf) < 0)
+            return AVERROR(ENOMEM);
+
+        put_str16_nolen(dyn_buf, desc);
+        len = url_close_dyn_buf(dyn_buf, &buf);
+        put_le16(pb, len / 2); // "number of characters" = length in bytes / 2
+
+        put_buffer(pb, buf, len);
+        av_freep(&buf);
+
         put_le16(pb, 0); /* no parameters */
 
 
         /* id */
         if (enc->codec_type == CODEC_TYPE_AUDIO) {
             put_le16(pb, 2);
             put_le16(pb, enc->codec_tag);
         } else {
             put_le16(pb, 4);
             put_le32(pb, enc->codec_tag);
@@ skipping 396 matching lines @@
 #endif
     CODEC_ID_MSMPEG4V3,
     asf_write_stream_header,
     asf_write_packet,
     asf_write_trailer,
     .flags = AVFMT_GLOBALHEADER,
     .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
     .metadata_conv = ff_asf_metadata_conv,
 };
 #endif //CONFIG_ASF_STREAM_MUXER