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avcodec/vc1: Don't use MpegEncContext.block

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Instead add the necessary blocks directly to VC1Context
(only six are needed, not 12 as ff_mpv_common_init()
currently allocates).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-06-16 00:52:25 +02:00
parent fe2dbb12b0
commit 94cfbf0238
3 changed files with 19 additions and 15 deletions
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4
libavcodec/vc1.h
View File

@ -31,6 +31,8 @@
#include "vc1_common.h"
#include "vc1dsp.h"
#include "libavutil/mem_internal.h"
#define AC_VLC_BITS 9
/** Sequence quantizer mode */
@ -399,6 +401,8 @@ typedef struct VC1Context{
int parse_only; ///< Context is used within parser
int resync_marker; ///< could this stream contain resync markers
DECLARE_ALIGNED_32(int16_t, blocks)[6][64];
} VC1Context;
/**

28
libavcodec/vc1_block.c
View File

@ -1950,22 +1950,22 @@ static int vc1_decode_b_mb(VC1Context *v)
if (i == 1 || i == 3 || s->mb_x)
v->c_avail = v->mb_type[s->block_index[i] - 1];
ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
ret = vc1_decode_intra_block(v, v->blocks[i], i, val, mquant,
(i & 4) ? v->codingset2 : v->codingset);
if (ret < 0)
return ret;
if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
continue;
v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
v->vc1dsp.vc1_inv_trans_8x8(v->blocks[i]);
if (v->rangeredfrm)
for (j = 0; j < 64; j++)
s->block[i][j] *= 2;
s->idsp.put_signed_pixels_clamped(s->block[i],
v->blocks[i][j] *= 2;
s->idsp.put_signed_pixels_clamped(v->blocks[i],
s->dest[dst_idx] + off,
i & 4 ? s->uvlinesize
: s->linesize);
} else if (val) {
int pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
int pat = vc1_decode_p_block(v, v->blocks[i], i, mquant, ttmb,
first_block, s->dest[dst_idx] + off,
(i & 4) ? s->uvlinesize : s->linesize,
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), NULL);
@ -2031,18 +2031,18 @@ static int vc1_decode_b_mb_intfi(VC1Context *v)
if (i == 1 || i == 3 || s->mb_x)
v->c_avail = v->mb_type[s->block_index[i] - 1];
ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
ret = vc1_decode_intra_block(v, v->blocks[i], i, val, mquant,
(i & 4) ? v->codingset2 : v->codingset);
if (ret < 0)
return ret;
if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
continue;
v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
v->vc1dsp.vc1_inv_trans_8x8(v->blocks[i]);
if (v->rangeredfrm)
for (j = 0; j < 64; j++)
s->block[i][j] <<= 1;
v->blocks[i][j] <<= 1;
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
s->idsp.put_signed_pixels_clamped(s->block[i],
s->idsp.put_signed_pixels_clamped(v->blocks[i],
s->dest[dst_idx] + off,
(i & 4) ? s->uvlinesize
: s->linesize);
@ -2129,7 +2129,7 @@ static int vc1_decode_b_mb_intfi(VC1Context *v)
val = ((cbp >> (5 - i)) & 1);
off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
if (val) {
pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
pat = vc1_decode_p_block(v, v->blocks[i], i, mquant, ttmb,
first_block, s->dest[dst_idx] + off,
(i & 4) ? s->uvlinesize : s->linesize,
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
@ -2227,13 +2227,13 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
if (i == 1 || i == 3 || s->mb_x)
v->c_avail = v->mb_type[s->block_index[i] - 1];
ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
ret = vc1_decode_intra_block(v, v->blocks[i], i, val, mquant,
(i & 4) ? v->codingset2 : v->codingset);
if (ret < 0)
return ret;
if (CONFIG_GRAY && i > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
continue;
v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
v->vc1dsp.vc1_inv_trans_8x8(v->blocks[i]);
if (i < 4) {
stride_y = s->linesize << fieldtx;
off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize;
@ -2241,7 +2241,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
stride_y = s->uvlinesize;
off = 0;
}
s->idsp.put_signed_pixels_clamped(s->block[i],
s->idsp.put_signed_pixels_clamped(v->blocks[i],
s->dest[dst_idx] + off,
stride_y);
}
@ -2430,7 +2430,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
else
off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
if (val) {
pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
pat = vc1_decode_p_block(v, v->blocks[i], i, mquant, ttmb,
first_block, s->dest[dst_idx] + off,
(i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);

2
libavcodec/vc1dec.c
View File

@ -420,7 +420,7 @@ static av_cold int vc1_decode_init_alloc_tables(VC1Context *v)
return AVERROR(ENOMEM);
}
ret = ff_intrax8_common_init(s->avctx, &v->x8, s->block[0],
ret = ff_intrax8_common_init(s->avctx, &v->x8, v->blocks[0],
s->mb_width, s->mb_height);
if (ret < 0)
return ret;