framecrcenc.c 1.73 KB
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/*
 * frame CRC encoder (for codec/format testing)
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 * Copyright (c) 2002 Fabrice Bellard
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * 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.
 *
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 * Libav is distributed in the hope that it will be useful,
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 * 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
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
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#include "libavutil/adler32.h"
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#include "avformat.h"
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#include "internal.h"
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static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{
    uint32_t crc = av_adler32_update(0, pkt->data, pkt->size);
    char buf[256];

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    snprintf(buf, sizeof(buf), "%d, %10"PRId64", %10"PRId64", %8d, %8d, 0x%08x\n",
             pkt->stream_index, pkt->dts, pkt->pts, pkt->duration, pkt->size, crc);
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    avio_write(s->pb, buf, strlen(buf));
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    avio_flush(s->pb);
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    return 0;
}

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AVOutputFormat ff_framecrc_muxer = {
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    .name              = "framecrc",
    .long_name         = NULL_IF_CONFIG_SMALL("framecrc testing format"),
    .extensions        = "",
    .audio_codec       = CODEC_ID_PCM_S16LE,
    .video_codec       = CODEC_ID_RAWVIDEO,
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    .write_header      = ff_framehash_write_header,
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    .write_packet      = framecrc_write_packet,
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    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
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};