#include "flacenc.h"
#include "avlanguage.h"
#include "libavutil/samplefmt.h"
+#include "libavutil/sha.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/intfloat.h"
#include "libavutil/mathematics.h"
ebml_master attached_file;
AVDictionaryEntry *t;
const char *mimetype = NULL;
+ uint64_t fileuid;
if (st->codec->codec_type != AVMEDIA_TYPE_ATTACHMENT)
continue;
return AVERROR(EINVAL);
}
+ if (st->codec->flags & CODEC_FLAG_BITEXACT) {
+ struct AVSHA *sha = av_sha_alloc();
+ uint8_t digest[20];
+ if (!sha)
+ return AVERROR(ENOMEM);
+ av_sha_init(sha, 160);
+ av_sha_update(sha, st->codec->extradata, st->codec->extradata_size);
+ av_sha_final(sha, digest);
+ av_free(sha);
+ fileuid = AV_RL64(digest);
+ } else {
+ fileuid = av_lfg_get(&c);
+ }
+ av_log(s, AV_LOG_VERBOSE, "Using %.16"PRIx64" for attachment %d\n",
+ fileuid, i);
+
put_ebml_string(pb, MATROSKA_ID_FILEMIMETYPE, mimetype);
put_ebml_binary(pb, MATROSKA_ID_FILEDATA, st->codec->extradata, st->codec->extradata_size);
- put_ebml_uint(pb, MATROSKA_ID_FILEUID, av_lfg_get(&c));
+ put_ebml_uint(pb, MATROSKA_ID_FILEUID, fileuid);
end_ebml_master(pb, attached_file);
}
end_ebml_master(pb, attachments);