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avformat/utils: force lowres to 0 in avformat_find_stream_info()

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Instead of applying it and then restoring the original codecpar dimensions.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2021-02-06 13:32:24 -03:00
parent c6ce18be08
commit a80fbbdab5
1 changed files with 8 additions and 9 deletions
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17
libavformat/utils.c
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@ -3021,6 +3021,10 @@ static int try_decode_frame(AVFormatContext *s, AVStream *st,
/* Force thread count to 1 since the H.264 decoder will not extract
* SPS and PPS to extradata during multi-threaded decoding. */
av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
/* Force lowres to 0. The decoder might reduce the video size by the
* lowres factor, and we don't want that propagated to the stream's
* codecpar */
av_dict_set(options ? options : &thread_opt, "lowres", "0", 0);
if (s->codec_whitelist)
av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
@ -3662,6 +3666,10 @@ FF_ENABLE_DEPRECATION_WARNINGS
/* Force thread count to 1 since the H.264 decoder will not extract
* SPS and PPS to extradata during multi-threaded decoding. */
av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
/* Force lowres to 0. The decoder might reduce the video size by the
* lowres factor, and we don't want that propagated to the stream's
* codecpar */
av_dict_set(options ? &options[i] : &thread_opt, "lowres", "0", 0);
if (ic->codec_whitelist)
av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
@ -4108,21 +4116,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
st = ic->streams[i];
if (st->internal->avctx_inited) {
int orig_w = st->codecpar->width;
int orig_h = st->codecpar->height;
ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
if (ret < 0)
goto find_stream_info_err;
ret = add_coded_side_data(st, st->internal->avctx);
if (ret < 0)
goto find_stream_info_err;
#if FF_API_LOWRES
// The decoder might reduce the video size by the lowres factor.
if (st->internal->avctx->lowres && orig_w) {
st->codecpar->width = orig_w;
st->codecpar->height = orig_h;
}
#endif
}
#if FF_API_LAVF_AVCTX