{
AVInputFormat *input_format = NULL;
AVFormatContext *input_format_ctx;
+ AVCodecParameters *input_codec_params;
AVCodecContext *input_codec_ctx;
AVCodec *input_codec;
int video_index;
/* look for the first video_stream */
video_index = -1;
for (i = 0; i < input_format_ctx->nb_streams; i++)
- if (input_format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+ if (input_format_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
video_index = i;
break;
}
goto cleanup;
}
- /* get a pointer to the codec context for the video stream */
- input_codec_ctx = input_format_ctx->streams[video_index]->codec;
+ /* get a pointer to the codec parameters for the video stream */
+ input_codec_params = input_format_ctx->streams[video_index]->codecpar;
/* find the decoder for the video stream */
- input_codec = avcodec_find_decoder(input_codec_ctx->codec_id);
+ input_codec = avcodec_find_decoder(input_codec_params->codec_id);
if (input_codec == NULL) {
fprintf(stderr, "input_codec is NULL!\n");
ret = -EINVAL;
goto cleanup;
}
+ input_codec_ctx = avcodec_alloc_context3(input_codec);
+ if (input_codec_ctx == NULL) {
+ fprintf(stderr, "failed to allocate the input codec context\n");
+ ret = -ENOMEM;
+ goto cleanup;
+ }
+
+ ret = avcodec_parameters_to_context(input_codec_ctx, input_codec_params);
+ if (ret < 0) {
+ fprintf(stderr, "cannot copy parameters to input codec context\n");
+ goto cleanup_ctx;
+ }
+
/* open the decoder */
ret = avcodec_open2(input_codec_ctx, input_codec, NULL);
if (ret < 0) {
fprintf(stderr, "cannot open input codec\n");
- goto cleanup;
+ goto cleanup_ctx;
}
input_ctx->format_ctx = input_format_ctx;
ret = 0;
goto out;
+cleanup_ctx:
+ avcodec_free_context(&input_codec_ctx);
cleanup:
avformat_close_input(&input_format_ctx);
out:
goto out;
cleanup:
- avcodec_close(output_codec_ctx);
- av_free(output_codec_ctx);
+ avcodec_free_context(&output_codec_ctx);
out:
return ret;
}
av_frame_free(&picture_raw);
cleanup_output:
- /* av_free is needed as well,
- * see http://libav.org/doxygen/master/avcodec_8h.html#a5d7440cd7ea195bd0b14f21a00ef36dd
+ /* Freeing the codec context is needed as well,
+ * see https://libav.org/documentation/doxygen/master/group__lavc__core.html#gaf4daa92361efb3523ef5afeb0b54077f
*/
avcodec_close(output_ctx.codec_ctx);
- av_free(output_ctx.codec_ctx);
+ avcodec_free_context(&(output_ctx.codec_ctx));
cleanup_input:
avcodec_close(input_ctx.codec_ctx);
+ avcodec_free_context(&(input_ctx.codec_ctx));
avformat_close_input(&(input_ctx.format_ctx));
out: