mirror of
https://github.com/pineappleEA/pineapple-src.git
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179 lines
5.5 KiB
C
179 lines
5.5 KiB
C
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/*
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* Copyright (c) 2012 Stefano Sabatini
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* Copyright (c) 2014 Clément Bœsch
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <libavutil/motion_vector.h>
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#include <libavformat/avformat.h>
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static AVFormatContext *fmt_ctx = NULL;
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static AVCodecContext *video_dec_ctx = NULL;
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static AVStream *video_stream = NULL;
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static const char *src_filename = NULL;
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static int video_stream_idx = -1;
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static AVFrame *frame = NULL;
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static int video_frame_count = 0;
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static int decode_packet(const AVPacket *pkt)
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{
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int ret = avcodec_send_packet(video_dec_ctx, pkt);
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if (ret < 0) {
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fprintf(stderr, "Error while sending a packet to the decoder: %s\n", av_err2str(ret));
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return ret;
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}
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while (ret >= 0) {
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ret = avcodec_receive_frame(video_dec_ctx, frame);
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if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
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break;
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} else if (ret < 0) {
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fprintf(stderr, "Error while receiving a frame from the decoder: %s\n", av_err2str(ret));
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return ret;
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}
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if (ret >= 0) {
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int i;
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AVFrameSideData *sd;
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video_frame_count++;
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sd = av_frame_get_side_data(frame, AV_FRAME_DATA_MOTION_VECTORS);
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if (sd) {
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const AVMotionVector *mvs = (const AVMotionVector *)sd->data;
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for (i = 0; i < sd->size / sizeof(*mvs); i++) {
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const AVMotionVector *mv = &mvs[i];
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printf("%d,%2d,%2d,%2d,%4d,%4d,%4d,%4d,0x%"PRIx64"\n",
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video_frame_count, mv->source,
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mv->w, mv->h, mv->src_x, mv->src_y,
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mv->dst_x, mv->dst_y, mv->flags);
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}
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}
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av_frame_unref(frame);
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}
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}
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return 0;
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}
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static int open_codec_context(AVFormatContext *fmt_ctx, enum AVMediaType type)
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{
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int ret;
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AVStream *st;
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AVCodecContext *dec_ctx = NULL;
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AVCodec *dec = NULL;
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AVDictionary *opts = NULL;
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ret = av_find_best_stream(fmt_ctx, type, -1, -1, &dec, 0);
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if (ret < 0) {
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fprintf(stderr, "Could not find %s stream in input file '%s'\n",
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av_get_media_type_string(type), src_filename);
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return ret;
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} else {
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int stream_idx = ret;
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st = fmt_ctx->streams[stream_idx];
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dec_ctx = avcodec_alloc_context3(dec);
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if (!dec_ctx) {
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fprintf(stderr, "Failed to allocate codec\n");
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return AVERROR(EINVAL);
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}
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ret = avcodec_parameters_to_context(dec_ctx, st->codecpar);
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if (ret < 0) {
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fprintf(stderr, "Failed to copy codec parameters to codec context\n");
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return ret;
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}
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/* Init the video decoder */
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av_dict_set(&opts, "flags2", "+export_mvs", 0);
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if ((ret = avcodec_open2(dec_ctx, dec, &opts)) < 0) {
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fprintf(stderr, "Failed to open %s codec\n",
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av_get_media_type_string(type));
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return ret;
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}
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video_stream_idx = stream_idx;
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video_stream = fmt_ctx->streams[video_stream_idx];
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video_dec_ctx = dec_ctx;
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}
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return 0;
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}
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int main(int argc, char **argv)
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{
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int ret = 0;
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AVPacket pkt = { 0 };
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if (argc != 2) {
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fprintf(stderr, "Usage: %s <video>\n", argv[0]);
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exit(1);
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}
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src_filename = argv[1];
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if (avformat_open_input(&fmt_ctx, src_filename, NULL, NULL) < 0) {
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fprintf(stderr, "Could not open source file %s\n", src_filename);
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exit(1);
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}
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if (avformat_find_stream_info(fmt_ctx, NULL) < 0) {
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fprintf(stderr, "Could not find stream information\n");
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exit(1);
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}
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open_codec_context(fmt_ctx, AVMEDIA_TYPE_VIDEO);
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av_dump_format(fmt_ctx, 0, src_filename, 0);
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if (!video_stream) {
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fprintf(stderr, "Could not find video stream in the input, aborting\n");
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ret = 1;
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goto end;
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}
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frame = av_frame_alloc();
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if (!frame) {
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fprintf(stderr, "Could not allocate frame\n");
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ret = AVERROR(ENOMEM);
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goto end;
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}
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printf("framenum,source,blockw,blockh,srcx,srcy,dstx,dsty,flags\n");
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/* read frames from the file */
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while (av_read_frame(fmt_ctx, &pkt) >= 0) {
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if (pkt.stream_index == video_stream_idx)
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ret = decode_packet(&pkt);
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av_packet_unref(&pkt);
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if (ret < 0)
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break;
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}
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/* flush cached frames */
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decode_packet(NULL);
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end:
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avcodec_free_context(&video_dec_ctx);
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avformat_close_input(&fmt_ctx);
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av_frame_free(&frame);
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return ret < 0;
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}
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