/*
  * frame CRC encoder (for codec/format testing)

  * Copyright (c) 2002 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.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */

 
 #include "libavutil/adler32.h"

 #include "avformat.h"
 
 static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt)
 {
     uint32_t crc = av_adler32_update(0, pkt->data, pkt->size);
     char buf[256];
 
     snprintf(buf, sizeof(buf), "%d, %"PRId64", %d, 0x%08x\n", pkt->stream_index, pkt->dts, pkt->size, crc);

     avio_write(s->pb, buf, strlen(buf));

     avio_flush(s->pb);

     return 0;
 }
 

 AVOutputFormat ff_framecrc_muxer = {

     "framecrc",

     NULL_IF_CONFIG_SMALL("framecrc testing format"),

     NULL,
     "",
     0,
     CODEC_ID_PCM_S16LE,
     CODEC_ID_RAWVIDEO,
     NULL,
     framecrc_write_packet,
     NULL,
 };