| /* |
| * 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 <inttypes.h> |
| |
| #include "config.h" |
| #include "libavutil/adler32.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavcodec/avcodec.h" |
| #include "avformat.h" |
| #include "internal.h" |
| |
| static int framecrc_write_header(struct AVFormatContext *s) |
| { |
| int i; |
| for (i = 0; i < s->nb_streams; i++) { |
| AVStream *st = s->streams[i]; |
| AVCodecParameters *par = st->codecpar; |
| if (par->extradata) { |
| uint32_t crc = av_adler32_update(0, par->extradata, par->extradata_size); |
| avio_printf(s->pb, "#extradata %d: %8d, 0x%08"PRIx32"\n", |
| i, par->extradata_size, crc); |
| } |
| } |
| |
| return ff_framehash_write_header(s); |
| } |
| |
| static av_unused void inline bswap(char *buf, int offset, int size) |
| { |
| if (size == 8) { |
| uint64_t val = AV_RN64(buf + offset); |
| AV_WN64(buf + offset, av_bswap64(val)); |
| } else if (size == 4) { |
| uint32_t val = AV_RN32(buf + offset); |
| AV_WN32(buf + offset, av_bswap32(val)); |
| } |
| } |
| |
| 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, %10"PRId64", %10"PRId64", %8"PRId64", %8d, 0x%08"PRIx32, |
| pkt->stream_index, pkt->dts, pkt->pts, pkt->duration, pkt->size, crc); |
| if (pkt->flags != AV_PKT_FLAG_KEY) |
| av_strlcatf(buf, sizeof(buf), ", F=0x%0X", pkt->flags); |
| if (pkt->side_data_elems) { |
| int i; |
| av_strlcatf(buf, sizeof(buf), ", S=%d", pkt->side_data_elems); |
| |
| for (i=0; i<pkt->side_data_elems; i++) { |
| const AVPacketSideData *const sd = &pkt->side_data[i]; |
| const uint8_t *data = sd->data; |
| uint32_t side_data_crc = 0; |
| |
| switch (sd->type) { |
| #if HAVE_BIGENDIAN |
| uint8_t bswap_buf[FFMAX(sizeof(AVCPBProperties), |
| sizeof(AVProducerReferenceTime))]; |
| case AV_PKT_DATA_PALETTE: |
| case AV_PKT_DATA_REPLAYGAIN: |
| case AV_PKT_DATA_DISPLAYMATRIX: |
| case AV_PKT_DATA_STEREO3D: |
| case AV_PKT_DATA_AUDIO_SERVICE_TYPE: |
| case AV_PKT_DATA_FALLBACK_TRACK: |
| case AV_PKT_DATA_MASTERING_DISPLAY_METADATA: |
| case AV_PKT_DATA_SPHERICAL: |
| case AV_PKT_DATA_CONTENT_LIGHT_LEVEL: |
| case AV_PKT_DATA_S12M_TIMECODE: |
| for (int j = 0; j < sd->size / 4; j++) { |
| uint8_t buf[4]; |
| AV_WL32(buf, AV_RB32(sd->data + 4 * j)); |
| side_data_crc = av_adler32_update(side_data_crc, buf, 4); |
| } |
| break; |
| case AV_PKT_DATA_CPB_PROPERTIES: |
| #define BSWAP(struct, field) bswap(bswap_buf, offsetof(struct, field), sizeof(((struct){0}).field)) |
| if (sd->size == sizeof(AVCPBProperties)) { |
| memcpy(bswap_buf, sd->data, sizeof(AVCPBProperties)); |
| data = bswap_buf; |
| BSWAP(AVCPBProperties, max_bitrate); |
| BSWAP(AVCPBProperties, min_bitrate); |
| BSWAP(AVCPBProperties, avg_bitrate); |
| BSWAP(AVCPBProperties, buffer_size); |
| BSWAP(AVCPBProperties, vbv_delay); |
| } |
| goto pod; |
| case AV_PKT_DATA_PRFT: |
| if (sd->size == sizeof(AVProducerReferenceTime)) { |
| memcpy(bswap_buf, sd->data, sizeof(AVProducerReferenceTime)); |
| data = bswap_buf; |
| BSWAP(AVProducerReferenceTime, wallclock); |
| BSWAP(AVProducerReferenceTime, flags); |
| } |
| goto pod; |
| pod: |
| #endif |
| default: |
| side_data_crc = av_adler32_update(0, data, sd->size); |
| } |
| av_strlcatf(buf, sizeof(buf), ", %8d, 0x%08"PRIx32, pkt->side_data[i].size, side_data_crc); |
| } |
| } |
| av_strlcatf(buf, sizeof(buf), "\n"); |
| avio_write(s->pb, buf, strlen(buf)); |
| return 0; |
| } |
| |
| AVOutputFormat ff_framecrc_muxer = { |
| .name = "framecrc", |
| .long_name = NULL_IF_CONFIG_SMALL("framecrc testing"), |
| .audio_codec = AV_CODEC_ID_PCM_S16LE, |
| .video_codec = AV_CODEC_ID_RAWVIDEO, |
| .write_header = framecrc_write_header, |
| .write_packet = framecrc_write_packet, |
| .flags = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT | |
| AVFMT_TS_NEGATIVE, |
| }; |