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avcodec/cri: Make decoder init-threadsafe

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The only thing that stands in the way of adding the
FF_CODEC_CAP_INIT_THREADSAFE flag to the Cintel RAW decoder is its usage
of ff_codec_open2_recursive(): This function requires its caller to hold
the lock for the mutex that guards initialization of AVCodecContexts
whose codecs have a non-threadsafe init function and only callers whose
codec does not have the FF_CODEC_CAP_INIT_THREADSAFE flag set hold said
lock (the others don't need to care about said lock). But one can set
the flag if one switches to avcodec_open2() at the same time.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-11-26 23:59:39 +01:00
parent 4e1fee405f
commit ba96cdd551
1 changed files with 2 additions and 2 deletions
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4
libavcodec/cri.c
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@ -66,7 +66,7 @@ static av_cold int cri_decode_init(AVCodecContext *avctx)
s->jpeg_avctx->flags2 = avctx->flags2;
s->jpeg_avctx->dct_algo = avctx->dct_algo;
s->jpeg_avctx->idct_algo = avctx->idct_algo;
ret = ff_codec_open2_recursive(s->jpeg_avctx, codec, NULL);
ret = avcodec_open2(s->jpeg_avctx, codec, NULL);
if (ret < 0)
return ret;
@ -419,6 +419,6 @@ AVCodec ff_cri_decoder = {
.decode = cri_decode_frame,
.close = cri_decode_close,
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
.long_name = NULL_IF_CONFIG_SMALL("Cintel RAW"),
};