00001 /* 00002 * frame CRC encoder (for codec/format testing) 00003 * Copyright (c) 2002 Fabrice Bellard. 00004 * 00005 * This file is part of FFmpeg. 00006 * 00007 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 #include "avformat.h" 00022 #include "adler32.h" 00023 00024 static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt) 00025 { 00026 uint32_t crc = av_adler32_update(0, pkt->data, pkt->size); 00027 char buf[256]; 00028 00029 snprintf(buf, sizeof(buf), "%d, %"PRId64", %d, 0x%08x\n", pkt->stream_index, pkt->dts, pkt->size, crc); 00030 put_buffer(s->pb, buf, strlen(buf)); 00031 put_flush_packet(s->pb); 00032 return 0; 00033 } 00034 00035 AVOutputFormat framecrc_muxer = { 00036 "framecrc", 00037 "framecrc testing format", 00038 NULL, 00039 "", 00040 0, 00041 CODEC_ID_PCM_S16LE, 00042 CODEC_ID_RAWVIDEO, 00043 NULL, 00044 framecrc_write_packet, 00045 NULL, 00046 };