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fftools/ffmpeg_dec: apply decoder options manually 

Do not pass an options dictionary to avcodec_open2().

This should be equivalent to current behaviour, but will allow
overriding caller-supplied options in a cleaner and more robust manner.

We can now set the COPY_OPAQUE flag directly rather going through
dec_opts.
This commit is contained in:
Anton Khirnov 2024-03-22 17:30:30 +01:00
parent 2d06a7570e
commit 372c78dd42
1 changed files with 14 additions and 7 deletions
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21
fftools/ffmpeg_dec.c
View File

@ -21,6 +21,7 @@
#include "libavutil/dict.h"
#include "libavutil/error.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/pixfmt.h"
#include "libavutil/time.h"
@ -1191,8 +1192,6 @@ static int dec_open(DecoderPriv *dp, AVDictionary **dec_opts,
if (!av_dict_get(*dec_opts, "threads", NULL, 0))
av_dict_set(dec_opts, "threads", "auto", 0);
av_dict_set(dec_opts, "flags", "+copy_opaque", AV_DICT_MULTIKEY);
ret = hw_device_setup_for_decode(dp, codec, o->hwaccel_device);
if (ret < 0) {
av_log(dp, AV_LOG_ERROR,
@ -1201,7 +1200,19 @@ static int dec_open(DecoderPriv *dp, AVDictionary **dec_opts,
return ret;
}
if ((ret = avcodec_open2(dp->dec_ctx, codec, dec_opts)) < 0) {
ret = av_opt_set_dict2(dp->dec_ctx, dec_opts, AV_OPT_SEARCH_CHILDREN);
if (ret < 0) {
av_log(dp, AV_LOG_ERROR, "Error applying decoder options: %s\n",
av_err2str(ret));
return ret;
}
ret = check_avoptions(*dec_opts);
if (ret < 0)
return ret;
dp->dec_ctx->flags |= AV_CODEC_FLAG_COPY_OPAQUE;
if ((ret = avcodec_open2(dp->dec_ctx, codec, NULL)) < 0) {
av_log(dp, AV_LOG_ERROR, "Error while opening decoder: %s\n",
av_err2str(ret));
return ret;
@ -1220,10 +1231,6 @@ static int dec_open(DecoderPriv *dp, AVDictionary **dec_opts,
dp->dec_ctx->extra_hw_frames = extra_frames;
}
ret = check_avoptions(*dec_opts);
if (ret < 0)
return ret;
dp->dec.subtitle_header = dp->dec_ctx->subtitle_header;
dp->dec.subtitle_header_size = dp->dec_ctx->subtitle_header_size;