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avcodec/wnv1: Make decoder init-threadsafe

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-11-15 12:19:55 +01:00
parent 4a772b1397
commit 8887232c77
1 changed files with 14 additions and 3 deletions
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17
libavcodec/wnv1.c
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@ -24,6 +24,8 @@
* Winnov WNV1 codec.
*/
#include "libavutil/thread.h"
#define BITSTREAM_READER_LE
#include "avcodec.h"
#include "get_bits.h"
@ -112,14 +114,22 @@ static int decode_frame(AVCodecContext *avctx,
return buf_size;
}
static av_cold int decode_init(AVCodecContext *avctx)
static av_cold void wnv1_init_static(void)
{
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
INIT_VLC_STATIC_FROM_LENGTHS(&code_vlc, CODE_VLC_BITS, 16,
&code_tab[0][1], 2,
&code_tab[0][0], 2, 1,
-7, INIT_VLC_OUTPUT_LE, 1 << CODE_VLC_BITS);
}
static av_cold int decode_init(AVCodecContext *avctx)
{
static AVOnce init_static_once = AV_ONCE_INIT;
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
ff_thread_once(&init_static_once, wnv1_init_static);
return 0;
}
@ -131,4 +141,5 @@ AVCodec ff_wnv1_decoder = {
.init = decode_init,
.decode = decode_frame,
.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
};