Function framehash_write_packet

libavformat/hashenc.c:282–318

}

static int framehash_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{
    struct HashContext *c = s->priv_data;
    char buf[AV_HASH_MAX_SIZE*2+128];
    int len;
    av_hash_init(c->hashes[0]);
    av_hash_update(c->hashes[0], pkt->data, pkt->size);

    snprintf(buf, sizeof(buf) - (AV_HASH_MAX_SIZE * 2 + 1), "%d, %10"PRId64", %10"PRId64", %8"PRId64", %8d, ",
             pkt->stream_index, pkt->dts, pkt->pts, pkt->duration, pkt->size);
    len = strlen(buf);
    av_hash_final_hex(c->hashes[0], buf + len, sizeof(buf) - len);
    avio_write(s->pb, buf, strlen(buf));

    if (c->format_version > 1 && pkt->side_data_elems) {
        int i;
        avio_printf(s->pb, ", S=%d", pkt->side_data_elems);
        for (i = 0; i < pkt->side_data_elems; i++) {
            av_hash_init(c->hashes[0]);
            if (HAVE_BIGENDIAN && pkt->side_data[i].type == AV_PKT_DATA_PALETTE) {
                for (size_t j = 0; j < pkt->side_data[i].size; j += sizeof(uint32_t)) {
                    uint32_t data = AV_RL32(pkt->side_data[i].data + j);
                    av_hash_update(c->hashes[0], (uint8_t *)&data, sizeof(uint32_t));
                }
            } else
                av_hash_update(c->hashes[0], pkt->side_data[i].data, pkt->side_data[i].size);
            snprintf(buf, sizeof(buf) - (AV_HASH_MAX_SIZE * 2 + 1),
                     ", %8zu, ", pkt->side_data[i].size);
            len = strlen(buf);
            av_hash_final_hex(c->hashes[0], buf + len, sizeof(buf) - len);
            avio_write(s->pb, buf, strlen(buf));
        }
    }

    avio_printf(s->pb, "\n");
    return 0;
}
#endif

#if CONFIG_FRAMEHASH_MUXER