1/*
2 * frame CRC encoder (for codec/format testing)
3 * Copyright (c) 2002 Fabrice Bellard
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "libavutil/adler32.h"
23#include "avformat.h"
24
25static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt)
26{
27    uint32_t crc = av_adler32_update(0, pkt->data, pkt->size);
28    char buf[256];
29
30    snprintf(buf, sizeof(buf), "%d, %"PRId64", %d, 0x%08x\n", pkt->stream_index, pkt->dts, pkt->size, crc);
31    avio_write(s->pb, buf, strlen(buf));
32    avio_flush(s->pb);
33    return 0;
34}
35
36AVOutputFormat ff_framecrc_muxer = {
37    .name              = "framecrc",
38    .long_name         = NULL_IF_CONFIG_SMALL("framecrc testing format"),
39    .extensions        = "",
40    .audio_codec       = CODEC_ID_PCM_S16LE,
41    .video_codec       = CODEC_ID_RAWVIDEO,
42    .write_packet      = framecrc_write_packet,
43    .flags             = AVFMT_VARIABLE_FPS,
44};
45