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avcodec/mpegvideo: Don't initialize H264Chroma ctx unnecessarily

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It is only used by the decoders' lowres code, so only initialize
it for decoders.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-10-24 03:20:22 +02:00
parent e59e14eee1
commit 938c62b368
3 changed files with 5 additions and 4 deletions
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4
configure vendored
View File

@ -2754,8 +2754,8 @@ me_cmp_select="idctdsp"
mpeg_er_select="error_resilience"
mpegaudio_select="mpegaudiodsp mpegaudioheader"
mpegaudiodsp_select="dct"
mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp videodsp"
mpegvideodec_select="mpegvideo mpeg_er"
mpegvideo_select="blockdsp hpeldsp idctdsp videodsp"
mpegvideodec_select="h264chroma mpegvideo mpeg_er"
mpegvideoenc_select="aandcttables fdctdsp me_cmp mpegvideo pixblockdsp qpeldsp"
msmpeg4dec_select="h263_decoder"
msmpeg4enc_select="h263_encoder"

2
libavcodec/mpegvideo.c
View File

@ -34,7 +34,6 @@
#include "avcodec.h"
#include "blockdsp.h"
#include "h264chroma.h"
#include "idctdsp.h"
#include "mathops.h"
#include "mpeg_er.h"
@ -275,7 +274,6 @@ static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
static av_cold int dct_init(MpegEncContext *s)
{
ff_blockdsp_init(&s->bdsp);
ff_h264chroma_init(&s->h264chroma, 8); //for lowres
ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
ff_videodsp_init(&s->vdsp, s->avctx->bits_per_raw_sample);

3
libavcodec/mpegvideo_dec.c
View File

@ -51,6 +51,8 @@ void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
/* convert fourcc to upper case */
s->codec_tag = ff_toupper4(avctx->codec_tag);
ff_h264chroma_init(&s->h264chroma, 8); //for lowres
}
int ff_mpeg_update_thread_context(AVCodecContext *dst,
@ -83,6 +85,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
memset(s, 0, sizeof(*s));
s->avctx = dst;
s->private_ctx = private_ctx;
memcpy(&s->h264chroma, &s1->h264chroma, sizeof(s->h264chroma));
return err;
}
}