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avcodec/mpegpicture: Avoid loop and branch when setting motion_val 

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-04-29 19:03:49 +02:00
parent 45cf0541cf
commit 12fcbff446
1 changed files with 4 additions and 7 deletions
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11
libavcodec/mpegpicture.c
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@ -223,6 +223,7 @@ static int alloc_picture_tables(BufferPoolContext *pools, MPVPicture *pic,
for (int i = 0; i < 2; i++) {
GET_BUFFER(ref_index,, [i]);
GET_BUFFER(motion_val, _base, [i]);
pic->motion_val[i] = pic->motion_val_base[i] + 4;
}
}
#undef GET_BUFFER
@ -231,6 +232,9 @@ static int alloc_picture_tables(BufferPoolContext *pools, MPVPicture *pic,
pic->mb_height = mb_height;
pic->mb_stride = pools->alloc_mb_stride;
pic->qscale_table = pic->qscale_table_base + 2 * pic->mb_stride + 1;
pic->mb_type = pic->mb_type_base + 2 * pic->mb_stride + 1;
return 0;
}
@ -250,13 +254,6 @@ int ff_mpv_alloc_pic_accessories(AVCodecContext *avctx, MPVWorkPicture *wpic,
if (ret < 0)
goto fail;
pic->qscale_table = pic->qscale_table_base + 2 * pic->mb_stride + 1;
pic->mb_type = pic->mb_type_base + 2 * pic->mb_stride + 1;
if (pic->motion_val_base[0]) {
for (int i = 0; i < 2; i++)
pic->motion_val[i] = pic->motion_val_base[i] + 4;
}
set_workpic_from_pic(wpic, pic);
return 0;