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avcodec/vc1: Remove write-only qs_last

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Write-only since 9cc74c9f6e.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-04-30 13:10:23 +02:00
parent 6ce86c9c11
commit 728ef2245c
2 changed files with 0 additions and 8 deletions
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7
libavcodec/vc1.c
View File

@ -724,7 +724,6 @@ int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
INIT_LUT(v->lumscale, v->lumshift, v->last_luty[0], v->last_lutuv[0], 1);
INIT_LUT(v->lumscale, v->lumshift, v->last_luty[1], v->last_lutuv[1], 1);
}
v->qs_last = v->s.quarter_sample;
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
v->s.quarter_sample = (v->mv_mode2 != MV_PMODE_1MV_HPEL &&
v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
@ -781,7 +780,6 @@ int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
v->tt_index = (v->pq > 4) + (v->pq > 12);
v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
v->qs_last = v->s.quarter_sample;
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
v->s.mspel = v->s.quarter_sample;
@ -1119,7 +1117,6 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
}
v->last_use_ic = 1;
}
v->qs_last = v->s.quarter_sample;
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
v->s.quarter_sample = (v->mv_mode2 != MV_PMODE_1MV_HPEL &&
v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
@ -1154,7 +1151,6 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
v->cbptab = get_bits(gb, 2);
v->cbpcy_vlc = ff_vc1_cbpcy_p_vlc[v->cbptab];
} else if (v->fcm == ILACE_FRAME) { // frame interlaced
v->qs_last = v->s.quarter_sample;
v->s.quarter_sample = 1;
v->s.mspel = 1;
} else { // field interlaced
@ -1218,7 +1214,6 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
mvmode = get_unary(gb, 1, 3);
lowquant = (v->pq > 12) ? 0 : 1;
v->mv_mode = ff_vc1_mv_pmode_table2[lowquant][mvmode];
v->qs_last = v->s.quarter_sample;
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV || v->mv_mode == MV_PMODE_MIXED_MV);
v->s.mspel = (v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
status = bitplane_decoding(v->forward_mb_plane, &v->fmb_is_raw, v);
@ -1248,7 +1243,6 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
v->intcomp = 0;
v->mv_mode = MV_PMODE_1MV;
v->fourmvswitch = 0;
v->qs_last = v->s.quarter_sample;
v->s.quarter_sample = 1;
v->s.mspel = 1;
status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
@ -1274,7 +1268,6 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
v->fourmvbp_vlc = ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
} else {
v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
v->qs_last = v->s.quarter_sample;
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
v->s.mspel = v->s.quarter_sample;
status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);

1
libavcodec/vc1.h
View File

@ -365,7 +365,6 @@ typedef struct VC1Context{
int cur_field_type; ///< 0: top, 1: bottom
int ref_field_type[2]; ///< forward and backward reference field type (top or bottom)
int blocks_off, mb_off;
int qs_last; ///< if qpel has been used in the previous (tr.) picture
int bmvtype;
int frfd, brfd; ///< reference frame distance (forward or backward)
int first_pic_header_flag;