static int hash_write_header(struct AVFormatContext *s)
{
struct HashContext *c = s->priv_data;
int res = av_hash_alloc(&c->hash, c->hash_name);
if (res < 0)
return res;
av_hash_init(c->hash);
return 0;
}
static int framehash_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{
struct HashContext *c = s->priv_data;
char buf[256];
av_hash_init(c->hash);
av_hash_update(c->hash, pkt->data, pkt->size);
snprintf(buf, sizeof(buf) - 64, "%d, %10"PRId64", %10"PRId64", %8"PRId64", %8d, ",
pkt->stream_index, pkt->dts, pkt->pts, pkt->duration, pkt->size);
hash_finish(s, buf);
return 0;
}
static void framehash_print_extradata(struct AVFormatContext *s)
{
int i;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
AVCodecParameters *par = st->codecpar;
if (par->extradata) {
struct HashContext *c = s->priv_data;
char buf[AV_HASH_MAX_SIZE*2+1];
avio_printf(s->pb, "#extradata %d, %31d, ", i, par->extradata_size);
av_hash_init(c->hash);
av_hash_update(c->hash, par->extradata, par->extradata_size);
av_hash_final_hex(c->hash, buf, sizeof(buf));
avio_write(s->pb, buf, strlen(buf));
avio_printf(s->pb, "\n");
}
}
}