[FFmpeg-cvslog] avcodec/mpegvideo: Don't set unrestricted_mv for decoders

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Mon Jan 10 20:13:43 2022 +0100| [b263415ab7dcb0f7077fed2af4aa507b4be3e2f9] | committer: Andreas Rheinhardt

avcodec/mpegvideo: Don't set unrestricted_mv for decoders

It is write-only for them.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b263415ab7dcb0f7077fed2af4aa507b4be3e2f9
---

 libavcodec/flvdec.c       | 1 -
 libavcodec/h263dec.c      | 2 --
 libavcodec/intelh263dec.c | 1 -
 libavcodec/ituh263dec.c   | 2 --
 libavcodec/rv10.c         | 2 --
 5 files changed, 8 deletions(-)

diff --git a/libavcodec/flvdec.c b/libavcodec/flvdec.c
index 6258c1c0a7..2ddcf021fd 100644
--- a/libavcodec/flvdec.c
+++ b/libavcodec/flvdec.c
@@ -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 */
diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
index 9cc2665cac..ac48acf47a 100644
--- a/libavcodec/h263dec.c
+++ b/libavcodec/h263dec.c
@@ -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:
diff --git a/libavcodec/intelh263dec.c b/libavcodec/intelh263dec.c
index 7c794dc5e3..58c1b63c0a 100644
--- a/libavcodec/intelh263dec.c
+++ b/libavcodec/intelh263dec.c
@@ -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) {
diff --git a/libavcodec/ituh263dec.c b/libavcodec/ituh263dec.c
index 17af5d7f89..5329e62a5e 100644
--- a/libavcodec/ituh263dec.c
+++ b/libavcodec/ituh263dec.c
@@ -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;
 
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
index d8261c34c7..0dc2c87335 100644
--- a/libavcodec/rv10.c
+++ b/libavcodec/rv10.c
@@ -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)