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avcodec/mpegvideo: Don't set unrestricted_mv for decoders 

It is write-only for them.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-01-10 20:13:43 +01:00
parent 3988016fa3
commit b263415ab7
5 changed files with 0 additions and 8 deletions
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1
libavcodec/flvdec.c
View File

@ -90,7 +90,6 @@ int ff_flv_decode_picture_header(MpegEncContext *s)
s->h263_plus = 0;
s->unrestricted_mv = 1;
s->h263_long_vectors = 0;
/* PEI */

2
libavcodec/h263dec.c
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@ -83,13 +83,11 @@ av_cold int ff_h263_decode_init(AVCodecContext *avctx)
s->quant_precision = 5;
s->decode_mb = ff_h263_decode_mb;
s->low_delay = 1;
s->unrestricted_mv = 1;
/* select sub codec */
switch (avctx->codec->id) {
case AV_CODEC_ID_H263:
case AV_CODEC_ID_H263P:
s->unrestricted_mv = 0;
avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
break;
case AV_CODEC_ID_MPEG4:

1
libavcodec/intelh263dec.c
View File

@ -66,7 +66,6 @@ int ff_intel_h263_decode_picture_header(MpegEncContext *s)
return -1; /* SAC: off */
}
s->obmc= get_bits1(&s->gb);
s->unrestricted_mv = s->obmc || s->h263_long_vectors;
s->pb_frame = get_bits1(&s->gb);
if (format < 6) {

2
libavcodec/ituh263dec.c
View File

@ -1150,7 +1150,6 @@ int ff_h263_decode_picture_header(MpegEncContext *s)
return -1; /* SAC: off */
}
s->obmc= get_bits1(&s->gb); /* Advanced prediction mode */
s->unrestricted_mv = s->h263_long_vectors || s->obmc;
s->pb_frame = get_bits1(&s->gb);
s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
@ -1180,7 +1179,6 @@ int ff_h263_decode_picture_header(MpegEncContext *s)
s->obmc= get_bits1(&s->gb); /* Advanced prediction mode */
s->h263_aic = get_bits1(&s->gb); /* Advanced Intra Coding (AIC) */
s->loop_filter= get_bits1(&s->gb);
s->unrestricted_mv = s->umvplus || s->obmc || s->loop_filter;
if(s->avctx->lowres)
s->loop_filter = 0;

2
libavcodec/rv10.c
View File

@ -149,7 +149,6 @@ static int rv10_decode_picture_header(MpegEncContext *s)
}
skip_bits(&s->gb, 3); /* ignored */
s->f_code = 1;
s->unrestricted_mv = 1;
return mb_count;
}
@ -298,7 +297,6 @@ static int rv20_decode_picture_header(RVDecContext *rv, int whole_size)
skip_bits(&s->gb, 5);
s->f_code = 1;
s->unrestricted_mv = 1;
s->h263_aic = s->pict_type == AV_PICTURE_TYPE_I;
s->modified_quant = 1;
if (!s->avctx->lowres)