repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * frame CRC encoder (for codec/format testing) | |
| 3 | * Copyright (c) 2002 Fabrice Bellard | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 7 | * FFmpeg 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 | * FFmpeg 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 FFmpeg; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #include <inttypes.h> | |
| 23 | ||
| 24 | #include "libavutil/adler32.h" | |
| 25 | #include "libavutil/avstring.h" | |
| 26 | #include "avformat.h" | |
| 27 | #include "internal.h" | |
| 28 | ||
| 29 | static int framecrc_write_header(struct AVFormatContext *s) | |
| 30 | { | |
| 31 | int i; | |
| 32 | for (i = 0; i < s->nb_streams; i++) { | |
| 33 | AVStream *st = s->streams[i]; | |
| 34 | AVCodecContext *avctx = st->codec; | |
| 35 | if (avctx->extradata) { | |
| 36 | uint32_t crc = av_adler32_update(0, avctx->extradata, avctx->extradata_size); | |
| 37 | avio_printf(s->pb, "#extradata %d: %8d, 0x%08"PRIx32"\n", | |
| 38 | i, avctx->extradata_size, crc); | |
| 39 | } | |
| 40 | } | |
| 41 | ||
| 42 | return ff_framehash_write_header(s); | |
| 43 | } | |
| 44 | ||
| 45 | static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt) | |
| 46 | { | |
| 47 | uint32_t crc = av_adler32_update(0, pkt->data, pkt->size); | |
| 48 | char buf[256]; | |
| 49 | ||
| 50 | snprintf(buf, sizeof(buf), "%d, %10"PRId64", %10"PRId64", %8d, %8d, 0x%08"PRIx32, | |
| 51 | pkt->stream_index, pkt->dts, pkt->pts, pkt->duration, pkt->size, crc); | |
| 52 | if (pkt->flags != AV_PKT_FLAG_KEY) | |
| 53 | av_strlcatf(buf, sizeof(buf), ", F=0x%0X", pkt->flags); | |
| 54 | if (pkt->side_data_elems) { | |
| 55 | int i, j; | |
| 56 | av_strlcatf(buf, sizeof(buf), ", S=%d", pkt->side_data_elems); | |
| 57 | ||
| 58 | for (i=0; i<pkt->side_data_elems; i++) { | |
| 59 | uint32_t side_data_crc = 0; | |
| 60 | if (HAVE_BIGENDIAN && AV_PKT_DATA_PALETTE == pkt->side_data[i].type) { | |
| 61 | for (j=0; j<pkt->side_data[i].size; j++) { | |
| 62 | side_data_crc = av_adler32_update(side_data_crc, | |
| 63 | pkt->side_data[i].data + (j^3), | |
| 64 | 1); | |
| 65 | } | |
| 66 | } else { | |
| 67 | side_data_crc = av_adler32_update(0, | |
| 68 | pkt->side_data[i].data, | |
| 69 | pkt->side_data[i].size); | |
| 70 | } | |
| 71 | av_strlcatf(buf, sizeof(buf), ", %8d, 0x%08x", pkt->side_data[i].size, side_data_crc); | |
| 72 | } | |
| 73 | } | |
| 74 | av_strlcatf(buf, sizeof(buf), "\n"); | |
| 75 | avio_write(s->pb, buf, strlen(buf)); | |
| 76 | return 0; | |
| 77 | } | |
| 78 | ||
| 79 | AVOutputFormat ff_framecrc_muxer = { | |
| 80 | .name = "framecrc", | |
| 81 | .long_name = NULL_IF_CONFIG_SMALL("framecrc testing"), | |
| 82 | .audio_codec = AV_CODEC_ID_PCM_S16LE, | |
| 83 | .video_codec = AV_CODEC_ID_RAWVIDEO, | |
| 84 | .write_header = framecrc_write_header, | |
| 85 | .write_packet = framecrc_write_packet, | |
| 86 | .flags = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT | | |
| 87 | AVFMT_TS_NEGATIVE, | |
| 88 | }; |