Libav 0.7.1
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00001 /* 00002 * frame CRC encoder (for codec/format testing) 00003 * Copyright (c) 2002 Fabrice Bellard 00004 * 00005 * This file is part of Libav. 00006 * 00007 * Libav is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * Libav is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with Libav; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00022 #include "libavutil/adler32.h" 00023 #include "avformat.h" 00024 00025 static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt) 00026 { 00027 uint32_t crc = av_adler32_update(0, pkt->data, pkt->size); 00028 char buf[256]; 00029 00030 snprintf(buf, sizeof(buf), "%d, %"PRId64", %d, 0x%08x\n", pkt->stream_index, pkt->dts, pkt->size, crc); 00031 avio_write(s->pb, buf, strlen(buf)); 00032 avio_flush(s->pb); 00033 return 0; 00034 } 00035 00036 AVOutputFormat ff_framecrc_muxer = { 00037 "framecrc", 00038 NULL_IF_CONFIG_SMALL("framecrc testing format"), 00039 NULL, 00040 "", 00041 0, 00042 CODEC_ID_PCM_S16LE, 00043 CODEC_ID_RAWVIDEO, 00044 NULL, 00045 framecrc_write_packet, 00046 NULL, 00047 };