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FFmpeg/libavcodec/vc1dsp.c
Ben Avison 2e26847780 avcodec/vc1: Introduce fast path for unescaping bitstream buffer 
Includes a checkasm test.

Signed-off-by: Ben Avison <bavison@riscosopen.org>
Signed-off-by: Martin Storsjö <martin@martin.st>
2022-04-01 10:03:33 +03:00

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/*
* VC-1 and WMV3 decoder - DSP functions
* Copyright (c) 2006 Konstantin Shishkov
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* VC-1 and WMV3 decoder
*/
#include "config_components.h"
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "h264chroma.h"
#include "qpeldsp.h"
#include "rnd_avg.h"
#include "vc1dsp.h"
#include "startcode.h"
#include "vc1_common.h"
/* Apply overlap transform to horizontal edge */
static void vc1_v_overlap_c(uint8_t *src, ptrdiff_t stride)
{
int i;
int a, b, c, d;
int d1, d2;
int rnd = 1;
for (i = 0; i < 8; i++) {
a = src[-2 * stride];
b = src[-stride];
c = src[0];
d = src[stride];
d1 = (a - d + 3 + rnd) >> 3;
d2 = (a - d + b - c + 4 - rnd) >> 3;
src[-2 * stride] = a - d1;
src[-stride] = av_clip_uint8(b - d2);
src[0] = av_clip_uint8(c + d2);
src[stride] = d + d1;
src++;
rnd = !rnd;
}
}
/* Apply overlap transform to vertical edge */
static void vc1_h_overlap_c(uint8_t *src, ptrdiff_t stride)
{
int i;
int a, b, c, d;
int d1, d2;
int rnd = 1;
for (i = 0; i < 8; i++) {
a = src[-2];
b = src[-1];
c = src[0];
d = src[1];
d1 = (a - d + 3 + rnd) >> 3;
d2 = (a - d + b - c + 4 - rnd) >> 3;
src[-2] = a - d1;
src[-1] = av_clip_uint8(b - d2);
src[0] = av_clip_uint8(c + d2);
src[1] = d + d1;
src += stride;
rnd = !rnd;
}
}
static void vc1_v_s_overlap_c(int16_t *top, int16_t *bottom)
{
int i;
int a, b, c, d;
int d1, d2;
int rnd1 = 4, rnd2 = 3;
for (i = 0; i < 8; i++) {
a = top[48];
b = top[56];
c = bottom[0];
d = bottom[8];
d1 = a - d;
d2 = a - d + b - c;
top[48] = ((a * 8) - d1 + rnd1) >> 3;
top[56] = ((b * 8) - d2 + rnd2) >> 3;
bottom[0] = ((c * 8) + d2 + rnd1) >> 3;
bottom[8] = ((d * 8) + d1 + rnd2) >> 3;
bottom++;
top++;
rnd2 = 7 - rnd2;
rnd1 = 7 - rnd1;
}
}
static void vc1_h_s_overlap_c(int16_t *left, int16_t *right, ptrdiff_t left_stride, ptrdiff_t right_stride, int flags)
{
int i;
int a, b, c, d;
int d1, d2;
int rnd1 = flags & 2 ? 3 : 4;
int rnd2 = 7 - rnd1;
for (i = 0; i < 8; i++) {
a = left[6];
b = left[7];
c = right[0];
d = right[1];
d1 = a - d;
d2 = a - d + b - c;
left[6] = ((a * 8) - d1 + rnd1) >> 3;
left[7] = ((b * 8) - d2 + rnd2) >> 3;
right[0] = ((c * 8) + d2 + rnd1) >> 3;
right[1] = ((d * 8) + d1 + rnd2) >> 3;
right += right_stride;
left += left_stride;
if (flags & 1) {
rnd2 = 7 - rnd2;
rnd1 = 7 - rnd1;
}
}
}
/**
* VC-1 in-loop deblocking filter for one line
* @param src source block type
* @param stride block stride
* @param pq block quantizer
* @return whether other 3 pairs should be filtered or not
* @see 8.6
*/
static av_always_inline int vc1_filter_line(uint8_t *src, ptrdiff_t stride, int pq)
{
int a0 = (2 * (src[-2 * stride] - src[1 * stride]) -
5 * (src[-1 * stride] - src[0 * stride]) + 4) >> 3;
int a0_sign = a0 >> 31; /* Store sign */
a0 = (a0 ^ a0_sign) - a0_sign; /* a0 = FFABS(a0); */
if (a0 < pq) {
int a1 = FFABS((2 * (src[-4 * stride] - src[-1 * stride]) -
5 * (src[-3 * stride] - src[-2 * stride]) + 4) >> 3);
int a2 = FFABS((2 * (src[ 0 * stride] - src[ 3 * stride]) -
5 * (src[ 1 * stride] - src[ 2 * stride]) + 4) >> 3);
if (a1 < a0 || a2 < a0) {
int clip = src[-1 * stride] - src[0 * stride];
int clip_sign = clip >> 31;
clip = ((clip ^ clip_sign) - clip_sign) >> 1;
if (clip) {
int a3 = FFMIN(a1, a2);
int d = 5 * (a3 - a0);
int d_sign = (d >> 31);
d = ((d ^ d_sign) - d_sign) >> 3;
d_sign ^= a0_sign;
if (d_sign ^ clip_sign)
d = 0;
else {
d = FFMIN(d, clip);
d = (d ^ d_sign) - d_sign; /* Restore sign */
src[-1 * stride] = av_clip_uint8(src[-1 * stride] - d);
src[ 0 * stride] = av_clip_uint8(src[ 0 * stride] + d);
}
return 1;
}
}
}
return 0;
}
/**
* VC-1 in-loop deblocking filter
* @param src source block type
* @param step distance between horizontally adjacent elements
* @param stride distance between vertically adjacent elements
* @param len edge length to filter (4 or 8 pixels)
* @param pq block quantizer
* @see 8.6
*/
static inline void vc1_loop_filter(uint8_t *src, int step, ptrdiff_t stride,
int len, int pq)
{
int i;
int filt3;
for (i = 0; i < len; i += 4) {
filt3 = vc1_filter_line(src + 2 * step, stride, pq);
if (filt3) {
vc1_filter_line(src + 0 * step, stride, pq);
vc1_filter_line(src + 1 * step, stride, pq);
vc1_filter_line(src + 3 * step, stride, pq);
}
src += step * 4;
}
}
static void vc1_v_loop_filter4_c(uint8_t *src, ptrdiff_t stride, int pq)
{
vc1_loop_filter(src, 1, stride, 4, pq);
}
static void vc1_h_loop_filter4_c(uint8_t *src, ptrdiff_t stride, int pq)
{
vc1_loop_filter(src, stride, 1, 4, pq);
}
static void vc1_v_loop_filter8_c(uint8_t *src, ptrdiff_t stride, int pq)
{
vc1_loop_filter(src, 1, stride, 8, pq);
}
static void vc1_h_loop_filter8_c(uint8_t *src, ptrdiff_t stride, int pq)
{
vc1_loop_filter(src, stride, 1, 8, pq);
}
static void vc1_v_loop_filter16_c(uint8_t *src, ptrdiff_t stride, int pq)
{
vc1_loop_filter(src, 1, stride, 16, pq);
}
static void vc1_h_loop_filter16_c(uint8_t *src, ptrdiff_t stride, int pq)
{
vc1_loop_filter(src, stride, 1, 16, pq);
}
/* Do inverse transform on 8x8 block */
static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, ptrdiff_t stride, int16_t *block)
{
int i;
int dc = block[0];
dc = (3 * dc + 1) >> 1;
dc = (3 * dc + 16) >> 5;
for (i = 0; i < 8; i++) {
dest[0] = av_clip_uint8(dest[0] + dc);
dest[1] = av_clip_uint8(dest[1] + dc);
dest[2] = av_clip_uint8(dest[2] + dc);
dest[3] = av_clip_uint8(dest[3] + dc);
dest[4] = av_clip_uint8(dest[4] + dc);
dest[5] = av_clip_uint8(dest[5] + dc);
dest[6] = av_clip_uint8(dest[6] + dc);
dest[7] = av_clip_uint8(dest[7] + dc);
dest += stride;
}
}
static void vc1_inv_trans_8x8_c(int16_t block[64])
{
int i;
register int t1, t2, t3, t4, t5, t6, t7, t8;
int16_t *src, *dst, temp[64];
src = block;
dst = temp;
for (i = 0; i < 8; i++) {
t1 = 12 * (src[ 0] + src[32]) + 4;
t2 = 12 * (src[ 0] - src[32]) + 4;
t3 = 16 * src[16] + 6 * src[48];
t4 = 6 * src[16] - 16 * src[48];
t5 = t1 + t3;
t6 = t2 + t4;
t7 = t2 - t4;
t8 = t1 - t3;
t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
dst[0] = (t5 + t1) >> 3;
dst[1] = (t6 + t2) >> 3;
dst[2] = (t7 + t3) >> 3;
dst[3] = (t8 + t4) >> 3;
dst[4] = (t8 - t4) >> 3;
dst[5] = (t7 - t3) >> 3;
dst[6] = (t6 - t2) >> 3;
dst[7] = (t5 - t1) >> 3;
src += 1;
dst += 8;
}
src = temp;
dst = block;
for (i = 0; i < 8; i++) {
t1 = 12 * (src[ 0] + src[32]) + 64;
t2 = 12 * (src[ 0] - src[32]) + 64;
t3 = 16 * src[16] + 6 * src[48];
t4 = 6 * src[16] - 16 * src[48];
t5 = t1 + t3;
t6 = t2 + t4;
t7 = t2 - t4;
t8 = t1 - t3;
t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
dst[ 0] = (t5 + t1) >> 7;
dst[ 8] = (t6 + t2) >> 7;
dst[16] = (t7 + t3) >> 7;
dst[24] = (t8 + t4) >> 7;
dst[32] = (t8 - t4 + 1) >> 7;
dst[40] = (t7 - t3 + 1) >> 7;
dst[48] = (t6 - t2 + 1) >> 7;
dst[56] = (t5 - t1 + 1) >> 7;
src++;
dst++;
}
}
/* Do inverse transform on 8x4 part of block */
static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, ptrdiff_t stride, int16_t *block)
{
int i;
int dc = block[0];
dc = (3 * dc + 1) >> 1;
dc = (17 * dc + 64) >> 7;
for (i = 0; i < 4; i++) {
dest[0] = av_clip_uint8(dest[0] + dc);
dest[1] = av_clip_uint8(dest[1] + dc);
dest[2] = av_clip_uint8(dest[2] + dc);
dest[3] = av_clip_uint8(dest[3] + dc);
dest[4] = av_clip_uint8(dest[4] + dc);
dest[5] = av_clip_uint8(dest[5] + dc);
dest[6] = av_clip_uint8(dest[6] + dc);
dest[7] = av_clip_uint8(dest[7] + dc);
dest += stride;
}
}
static void vc1_inv_trans_8x4_c(uint8_t *dest, ptrdiff_t stride, int16_t *block)
{
int i;
register int t1, t2, t3, t4, t5, t6, t7, t8;
int16_t *src, *dst;
src = block;
dst = block;
for (i = 0; i < 4; i++) {
t1 = 12 * (src[0] + src[4]) + 4;
t2 = 12 * (src[0] - src[4]) + 4;
t3 = 16 * src[2] + 6 * src[6];
t4 = 6 * src[2] - 16 * src[6];
t5 = t1 + t3;
t6 = t2 + t4;
t7 = t2 - t4;
t8 = t1 - t3;
t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
dst[0] = (t5 + t1) >> 3;
dst[1] = (t6 + t2) >> 3;
dst[2] = (t7 + t3) >> 3;
dst[3] = (t8 + t4) >> 3;
dst[4] = (t8 - t4) >> 3;
dst[5] = (t7 - t3) >> 3;
dst[6] = (t6 - t2) >> 3;
dst[7] = (t5 - t1) >> 3;
src += 8;
dst += 8;
}
src = block;
for (i = 0; i < 8; i++) {
t1 = 17 * (src[ 0] + src[16]) + 64;
t2 = 17 * (src[ 0] - src[16]) + 64;
t3 = 22 * src[ 8] + 10 * src[24];
t4 = 22 * src[24] - 10 * src[ 8];
dest[0 * stride] = av_clip_uint8(dest[0 * stride] + ((t1 + t3) >> 7));
dest[1 * stride] = av_clip_uint8(dest[1 * stride] + ((t2 - t4) >> 7));
dest[2 * stride] = av_clip_uint8(dest[2 * stride] + ((t2 + t4) >> 7));
dest[3 * stride] = av_clip_uint8(dest[3 * stride] + ((t1 - t3) >> 7));
src++;
dest++;
}
}
/* Do inverse transform on 4x8 parts of block */
static void vc1_inv_trans_4x8_dc_c(uint8_t *dest, ptrdiff_t stride, int16_t *block)
{
int i;
int dc = block[0];
dc = (17 * dc + 4) >> 3;
dc = (12 * dc + 64) >> 7;
for (i = 0; i < 8; i++) {
dest[0] = av_clip_uint8(dest[0] + dc);
dest[1] = av_clip_uint8(dest[1] + dc);
dest[2] = av_clip_uint8(dest[2] + dc);
dest[3] = av_clip_uint8(dest[3] + dc);
dest += stride;
}
}
static void vc1_inv_trans_4x8_c(uint8_t *dest, ptrdiff_t stride, int16_t *block)
{
int i;
register int t1, t2, t3, t4, t5, t6, t7, t8;
int16_t *src, *dst;
src = block;
dst = block;
for (i = 0; i < 8; i++) {
t1 = 17 * (src[0] + src[2]) + 4;
t2 = 17 * (src[0] - src[2]) + 4;
t3 = 22 * src[1] + 10 * src[3];
t4 = 22 * src[3] - 10 * src[1];
dst[0] = (t1 + t3) >> 3;
dst[1] = (t2 - t4) >> 3;
dst[2] = (t2 + t4) >> 3;
dst[3] = (t1 - t3) >> 3;
src += 8;
dst += 8;
}
src = block;
for (i = 0; i < 4; i++) {
t1 = 12 * (src[ 0] + src[32]) + 64;
t2 = 12 * (src[ 0] - src[32]) + 64;
t3 = 16 * src[16] + 6 * src[48];
t4 = 6 * src[16] - 16 * src[48];
t5 = t1 + t3;
t6 = t2 + t4;
t7 = t2 - t4;
t8 = t1 - t3;
t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
dest[0 * stride] = av_clip_uint8(dest[0 * stride] + ((t5 + t1) >> 7));
dest[1 * stride] = av_clip_uint8(dest[1 * stride] + ((t6 + t2) >> 7));
dest[2 * stride] = av_clip_uint8(dest[2 * stride] + ((t7 + t3) >> 7));
dest[3 * stride] = av_clip_uint8(dest[3 * stride] + ((t8 + t4) >> 7));
dest[4 * stride] = av_clip_uint8(dest[4 * stride] + ((t8 - t4 + 1) >> 7));
dest[5 * stride] = av_clip_uint8(dest[5 * stride] + ((t7 - t3 + 1) >> 7));
dest[6 * stride] = av_clip_uint8(dest[6 * stride] + ((t6 - t2 + 1) >> 7));
dest[7 * stride] = av_clip_uint8(dest[7 * stride] + ((t5 - t1 + 1) >> 7));
src++;
dest++;
}
}
/* Do inverse transform on 4x4 part of block */
static void vc1_inv_trans_4x4_dc_c(uint8_t *dest, ptrdiff_t stride, int16_t *block)
{
int i;
int dc = block[0];
dc = (17 * dc + 4) >> 3;
dc = (17 * dc + 64) >> 7;
for (i = 0; i < 4; i++) {
dest[0] = av_clip_uint8(dest[0] + dc);
dest[1] = av_clip_uint8(dest[1] + dc);
dest[2] = av_clip_uint8(dest[2] + dc);
dest[3] = av_clip_uint8(dest[3] + dc);
dest += stride;
}
}
static void vc1_inv_trans_4x4_c(uint8_t *dest, ptrdiff_t stride, int16_t *block)
{
int i;
register int t1, t2, t3, t4;
int16_t *src, *dst;
src = block;
dst = block;
for (i = 0; i < 4; i++) {
t1 = 17 * (src[0] + src[2]) + 4;
t2 = 17 * (src[0] - src[2]) + 4;
t3 = 22 * src[1] + 10 * src[3];
t4 = 22 * src[3] - 10 * src[1];
dst[0] = (t1 + t3) >> 3;
dst[1] = (t2 - t4) >> 3;
dst[2] = (t2 + t4) >> 3;
dst[3] = (t1 - t3) >> 3;
src += 8;
dst += 8;
}
src = block;
for (i = 0; i < 4; i++) {
t1 = 17 * (src[0] + src[16]) + 64;
t2 = 17 * (src[0] - src[16]) + 64;
t3 = 22 * src[8] + 10 * src[24];
t4 = 22 * src[24] - 10 * src[8];
dest[0 * stride] = av_clip_uint8(dest[0 * stride] + ((t1 + t3) >> 7));
dest[1 * stride] = av_clip_uint8(dest[1 * stride] + ((t2 - t4) >> 7));
dest[2 * stride] = av_clip_uint8(dest[2 * stride] + ((t2 + t4) >> 7));
dest[3 * stride] = av_clip_uint8(dest[3 * stride] + ((t1 - t3) >> 7));
src++;
dest++;
}
}
/* motion compensation functions */
/* Filter in case of 2 filters */
#define VC1_MSPEL_FILTER_16B(DIR, TYPE) \
static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, \
int stride, \
int mode) \
{ \
switch(mode) { \
case 0: /* no shift - should not occur */ \
return 0; \
case 1: /* 1/4 shift */ \
return -4 * src[-stride] + 53 * src[0] + \
18 * src[stride] - 3 * src[stride * 2]; \
case 2: /* 1/2 shift */ \
return -1 * src[-stride] + 9 * src[0] + \
9 * src[stride] - 1 * src[stride * 2]; \
case 3: /* 3/4 shift */ \
return -3 * src[-stride] + 18 * src[0] + \
53 * src[stride] - 4 * src[stride * 2]; \
} \
return 0; /* should not occur */ \
}
VC1_MSPEL_FILTER_16B(ver, uint8_t)
VC1_MSPEL_FILTER_16B(hor, int16_t)
/* Filter used to interpolate fractional pel values */
static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride,
int mode, int r)
{
switch (mode) {
case 0: // no shift
return src[0];
case 1: // 1/4 shift
return (-4 * src[-stride] + 53 * src[0] +
18 * src[stride] - 3 * src[stride * 2] + 32 - r) >> 6;
case 2: // 1/2 shift
return (-1 * src[-stride] + 9 * src[0] +
9 * src[stride] - 1 * src[stride * 2] + 8 - r) >> 4;
case 3: // 3/4 shift
return (-3 * src[-stride] + 18 * src[0] +
53 * src[stride] - 4 * src[stride * 2] + 32 - r) >> 6;
}
return 0; // should not occur
}
/* Function used to do motion compensation with bicubic interpolation */
#define VC1_MSPEL_MC(OP, OP4, OPNAME) \
static av_always_inline void OPNAME ## vc1_mspel_mc(uint8_t *dst, \
const uint8_t *src, \
ptrdiff_t stride, \
int hmode, \
int vmode, \
int rnd) \
{ \
int i, j; \
\
if (vmode) { /* Horizontal filter to apply */ \
int r; \
\
if (hmode) { /* Vertical filter to apply, output to tmp */ \
static const int shift_value[] = { 0, 5, 1, 5 }; \
int shift = (shift_value[hmode] + shift_value[vmode]) >> 1; \
int16_t tmp[11 * 8], *tptr = tmp; \
\
r = (1 << (shift - 1)) + rnd - 1; \
\
src -= 1; \
for (j = 0; j < 8; j++) { \
for (i = 0; i < 11; i++) \
tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode) + r) >> shift; \
src += stride; \
tptr += 11; \
} \
\
r = 64 - rnd; \
tptr = tmp + 1; \
for (j = 0; j < 8; j++) { \
for (i = 0; i < 8; i++) \
OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode) + r) >> 7); \
dst += stride; \
tptr += 11; \
} \
\
return; \
} else { /* No horizontal filter, output 8 lines to dst */ \
r = 1 - rnd; \
\
for (j = 0; j < 8; j++) { \
for (i = 0; i < 8; i++) \
OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r)); \
src += stride; \
dst += stride; \
} \
return; \
} \
} \
\
/* Horizontal mode with no vertical mode */ \
for (j = 0; j < 8; j++) { \
for (i = 0; i < 8; i++) \
OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd)); \
dst += stride; \
src += stride; \
} \
}\
static av_always_inline void OPNAME ## vc1_mspel_mc_16(uint8_t *dst, \
const uint8_t *src, \
ptrdiff_t stride, \
int hmode, \
int vmode, \
int rnd) \
{ \
int i, j; \
\
if (vmode) { /* Horizontal filter to apply */ \
int r; \
\
if (hmode) { /* Vertical filter to apply, output to tmp */ \
static const int shift_value[] = { 0, 5, 1, 5 }; \
int shift = (shift_value[hmode] + shift_value[vmode]) >> 1; \
int16_t tmp[19 * 16], *tptr = tmp; \
\
r = (1 << (shift - 1)) + rnd - 1; \
\
src -= 1; \
for (j = 0; j < 16; j++) { \
for (i = 0; i < 19; i++) \
tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode) + r) >> shift; \
src += stride; \
tptr += 19; \
} \
\
r = 64 - rnd; \
tptr = tmp + 1; \
for (j = 0; j < 16; j++) { \
for (i = 0; i < 16; i++) \
OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode) + r) >> 7); \
dst += stride; \
tptr += 19; \
} \
\
return; \
} else { /* No horizontal filter, output 8 lines to dst */ \
r = 1 - rnd; \
\
for (j = 0; j < 16; j++) { \
for (i = 0; i < 16; i++) \
OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r)); \
src += stride; \
dst += stride; \
} \
return; \
} \
} \
\
/* Horizontal mode with no vertical mode */ \
for (j = 0; j < 16; j++) { \
for (i = 0; i < 16; i++) \
OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd)); \
dst += stride; \
src += stride; \
} \
}\
static void OPNAME ## pixels8x8_c(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int rnd){\
int i;\
for(i=0; i<8; i++){\
OP4(*(uint32_t*)(block ), AV_RN32(pixels ));\
OP4(*(uint32_t*)(block+4), AV_RN32(pixels+4));\
pixels+=line_size;\
block +=line_size;\
}\
}\
static void OPNAME ## pixels16x16_c(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int rnd){\
int i;\
for(i=0; i<16; i++){\
OP4(*(uint32_t*)(block ), AV_RN32(pixels ));\
OP4(*(uint32_t*)(block+ 4), AV_RN32(pixels+ 4));\
OP4(*(uint32_t*)(block+ 8), AV_RN32(pixels+ 8));\
OP4(*(uint32_t*)(block+12), AV_RN32(pixels+12));\
pixels+=line_size;\
block +=line_size;\
}\
}
#define op_put(a, b) (a) = av_clip_uint8(b)
#define op_avg(a, b) (a) = ((a) + av_clip_uint8(b) + 1) >> 1
#define op4_avg(a, b) (a) = rnd_avg32(a, b)
#define op4_put(a, b) (a) = (b)
VC1_MSPEL_MC(op_put, op4_put, put_)
VC1_MSPEL_MC(op_avg, op4_avg, avg_)
/* pixel functions - really are entry points to vc1_mspel_mc */
#define PUT_VC1_MSPEL(a, b) \
static void put_vc1_mspel_mc ## a ## b ## _c(uint8_t *dst, \
const uint8_t *src, \
ptrdiff_t stride, int rnd) \
{ \
put_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
} \
static void avg_vc1_mspel_mc ## a ## b ## _c(uint8_t *dst, \
const uint8_t *src, \
ptrdiff_t stride, int rnd) \
{ \
avg_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
} \
static void put_vc1_mspel_mc ## a ## b ## _16_c(uint8_t *dst, \
const uint8_t *src, \
ptrdiff_t stride, int rnd) \
{ \
put_vc1_mspel_mc_16(dst, src, stride, a, b, rnd); \
} \
static void avg_vc1_mspel_mc ## a ## b ## _16_c(uint8_t *dst, \
const uint8_t *src, \
ptrdiff_t stride, int rnd) \
{ \
avg_vc1_mspel_mc_16(dst, src, stride, a, b, rnd); \
}
PUT_VC1_MSPEL(1, 0)
PUT_VC1_MSPEL(2, 0)
PUT_VC1_MSPEL(3, 0)
PUT_VC1_MSPEL(0, 1)
PUT_VC1_MSPEL(1, 1)
PUT_VC1_MSPEL(2, 1)
PUT_VC1_MSPEL(3, 1)
PUT_VC1_MSPEL(0, 2)
PUT_VC1_MSPEL(1, 2)
PUT_VC1_MSPEL(2, 2)
PUT_VC1_MSPEL(3, 2)
PUT_VC1_MSPEL(0, 3)
PUT_VC1_MSPEL(1, 3)
PUT_VC1_MSPEL(2, 3)
PUT_VC1_MSPEL(3, 3)
#define chroma_mc(a) \
((A * src[a] + B * src[a + 1] + \
C * src[stride + a] + D * src[stride + a + 1] + 32 - 4) >> 6)
static void put_no_rnd_vc1_chroma_mc8_c(uint8_t *dst /* align 8 */,
uint8_t *src /* align 1 */,
ptrdiff_t stride, int h, int x, int y)
{
const int A = (8 - x) * (8 - y);
const int B = (x) * (8 - y);
const int C = (8 - x) * (y);
const int D = (x) * (y);
int i;
av_assert2(x < 8 && y < 8 && x >= 0 && y >= 0);
for (i = 0; i < h; i++) {
dst[0] = chroma_mc(0);
dst[1] = chroma_mc(1);
dst[2] = chroma_mc(2);
dst[3] = chroma_mc(3);
dst[4] = chroma_mc(4);
dst[5] = chroma_mc(5);
dst[6] = chroma_mc(6);
dst[7] = chroma_mc(7);
dst += stride;
src += stride;
}
}
static void put_no_rnd_vc1_chroma_mc4_c(uint8_t *dst, uint8_t *src,
ptrdiff_t stride, int h, int x, int y)
{
const int A = (8 - x) * (8 - y);
const int B = (x) * (8 - y);
const int C = (8 - x) * (y);
const int D = (x) * (y);
int i;
av_assert2(x < 8 && y < 8 && x >= 0 && y >= 0);
for (i = 0; i < h; i++) {
dst[0] = chroma_mc(0);
dst[1] = chroma_mc(1);
dst[2] = chroma_mc(2);
dst[3] = chroma_mc(3);
dst += stride;
src += stride;
}
}
#define avg2(a, b) (((a) + (b) + 1) >> 1)
static void avg_no_rnd_vc1_chroma_mc8_c(uint8_t *dst /* align 8 */,
uint8_t *src /* align 1 */,
ptrdiff_t stride, int h, int x, int y)
{
const int A = (8 - x) * (8 - y);
const int B = (x) * (8 - y);
const int C = (8 - x) * (y);
const int D = (x) * (y);
int i;
av_assert2(x < 8 && y < 8 && x >= 0 && y >= 0);
for (i = 0; i < h; i++) {
dst[0] = avg2(dst[0], chroma_mc(0));
dst[1] = avg2(dst[1], chroma_mc(1));
dst[2] = avg2(dst[2], chroma_mc(2));
dst[3] = avg2(dst[3], chroma_mc(3));
dst[4] = avg2(dst[4], chroma_mc(4));
dst[5] = avg2(dst[5], chroma_mc(5));
dst[6] = avg2(dst[6], chroma_mc(6));
dst[7] = avg2(dst[7], chroma_mc(7));
dst += stride;
src += stride;
}
}
static void avg_no_rnd_vc1_chroma_mc4_c(uint8_t *dst /* align 8 */,
uint8_t *src /* align 1 */,
ptrdiff_t stride, int h, int x, int y)
{
const int A = (8 - x) * (8 - y);
const int B = ( x) * (8 - y);
const int C = (8 - x) * ( y);
const int D = ( x) * ( y);
int i;
av_assert2(x < 8 && y < 8 && x >= 0 && y >= 0);
for (i = 0; i < h; i++) {
dst[0] = avg2(dst[0], chroma_mc(0));
dst[1] = avg2(dst[1], chroma_mc(1));
dst[2] = avg2(dst[2], chroma_mc(2));
dst[3] = avg2(dst[3], chroma_mc(3));
dst += stride;
src += stride;
}
}
#if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
static void sprite_h_c(uint8_t *dst, const uint8_t *src, int offset,
int advance, int count)
{
while (count--) {
int a = src[(offset >> 16)];
int b = src[(offset >> 16) + 1];
*dst++ = a + ((b - a) * (offset & 0xFFFF) >> 16);
offset += advance;
}
}
static av_always_inline void sprite_v_template(uint8_t *dst,
const uint8_t *src1a,
const uint8_t *src1b,
int offset1,
int two_sprites,
const uint8_t *src2a,
const uint8_t *src2b,
int offset2,
int alpha, int scaled,
int width)
{
int a1, b1, a2, b2;
while (width--) {
a1 = *src1a++;
if (scaled) {
b1 = *src1b++;
a1 = a1 + ((b1 - a1) * offset1 >> 16);
}
if (two_sprites) {
a2 = *src2a++;
if (scaled > 1) {
b2 = *src2b++;
a2 = a2 + ((b2 - a2) * offset2 >> 16);
}
a1 = a1 + ((a2 - a1) * alpha >> 16);
}
*dst++ = a1;
}
}
static void sprite_v_single_c(uint8_t *dst, const uint8_t *src1a,
const uint8_t *src1b,
int offset, int width)
{
sprite_v_template(dst, src1a, src1b, offset, 0, NULL, NULL, 0, 0, 1, width);
}
static void sprite_v_double_noscale_c(uint8_t *dst, const uint8_t *src1a,
const uint8_t *src2a,
int alpha, int width)
{
sprite_v_template(dst, src1a, NULL, 0, 1, src2a, NULL, 0, alpha, 0, width);
}
static void sprite_v_double_onescale_c(uint8_t *dst,
const uint8_t *src1a,
const uint8_t *src1b,
int offset1,
const uint8_t *src2a,
int alpha, int width)
{
sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, NULL, 0, alpha, 1,
width);
}
static void sprite_v_double_twoscale_c(uint8_t *dst,
const uint8_t *src1a,
const uint8_t *src1b,
int offset1,
const uint8_t *src2a,
const uint8_t *src2b,
int offset2,
int alpha,
int width)
{
sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, src2b, offset2,
alpha, 2, width);
}
#endif /* CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER */
#define FN_ASSIGN(X, Y) \
dsp->put_vc1_mspel_pixels_tab[1][X+4*Y] = put_vc1_mspel_mc##X##Y##_c; \
dsp->put_vc1_mspel_pixels_tab[0][X+4*Y] = put_vc1_mspel_mc##X##Y##_16_c; \
dsp->avg_vc1_mspel_pixels_tab[1][X+4*Y] = avg_vc1_mspel_mc##X##Y##_c; \
dsp->avg_vc1_mspel_pixels_tab[0][X+4*Y] = avg_vc1_mspel_mc##X##Y##_16_c
av_cold void ff_vc1dsp_init(VC1DSPContext *dsp)
{
dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;
dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;
dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;
dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;
dsp->vc1_inv_trans_8x8_dc = vc1_inv_trans_8x8_dc_c;
dsp->vc1_inv_trans_4x8_dc = vc1_inv_trans_4x8_dc_c;
dsp->vc1_inv_trans_8x4_dc = vc1_inv_trans_8x4_dc_c;
dsp->vc1_inv_trans_4x4_dc = vc1_inv_trans_4x4_dc_c;
dsp->vc1_h_overlap = vc1_h_overlap_c;
dsp->vc1_v_overlap = vc1_v_overlap_c;
dsp->vc1_h_s_overlap = vc1_h_s_overlap_c;
dsp->vc1_v_s_overlap = vc1_v_s_overlap_c;
dsp->vc1_v_loop_filter4 = vc1_v_loop_filter4_c;
dsp->vc1_h_loop_filter4 = vc1_h_loop_filter4_c;
dsp->vc1_v_loop_filter8 = vc1_v_loop_filter8_c;
dsp->vc1_h_loop_filter8 = vc1_h_loop_filter8_c;
dsp->vc1_v_loop_filter16 = vc1_v_loop_filter16_c;
dsp->vc1_h_loop_filter16 = vc1_h_loop_filter16_c;
dsp->put_vc1_mspel_pixels_tab[0][0] = put_pixels16x16_c;
dsp->avg_vc1_mspel_pixels_tab[0][0] = avg_pixels16x16_c;
dsp->put_vc1_mspel_pixels_tab[1][0] = put_pixels8x8_c;
dsp->avg_vc1_mspel_pixels_tab[1][0] = avg_pixels8x8_c;
FN_ASSIGN(0, 1);
FN_ASSIGN(0, 2);
FN_ASSIGN(0, 3);
FN_ASSIGN(1, 0);
FN_ASSIGN(1, 1);
FN_ASSIGN(1, 2);
FN_ASSIGN(1, 3);
FN_ASSIGN(2, 0);
FN_ASSIGN(2, 1);
FN_ASSIGN(2, 2);
FN_ASSIGN(2, 3);
FN_ASSIGN(3, 0);
FN_ASSIGN(3, 1);
FN_ASSIGN(3, 2);
FN_ASSIGN(3, 3);
dsp->put_no_rnd_vc1_chroma_pixels_tab[0] = put_no_rnd_vc1_chroma_mc8_c;
dsp->avg_no_rnd_vc1_chroma_pixels_tab[0] = avg_no_rnd_vc1_chroma_mc8_c;
dsp->put_no_rnd_vc1_chroma_pixels_tab[1] = put_no_rnd_vc1_chroma_mc4_c;
dsp->avg_no_rnd_vc1_chroma_pixels_tab[1] = avg_no_rnd_vc1_chroma_mc4_c;
#if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
dsp->sprite_h = sprite_h_c;
dsp->sprite_v_single = sprite_v_single_c;
dsp->sprite_v_double_noscale = sprite_v_double_noscale_c;
dsp->sprite_v_double_onescale = sprite_v_double_onescale_c;
dsp->sprite_v_double_twoscale = sprite_v_double_twoscale_c;
#endif /* CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER */
dsp->startcode_find_candidate = ff_startcode_find_candidate_c;
dsp->vc1_unescape_buffer = vc1_unescape_buffer;
if (ARCH_AARCH64)
ff_vc1dsp_init_aarch64(dsp);
if (ARCH_ARM)
ff_vc1dsp_init_arm(dsp);
if (ARCH_PPC)
ff_vc1dsp_init_ppc(dsp);
if (ARCH_X86)
ff_vc1dsp_init_x86(dsp);
if (ARCH_MIPS)
ff_vc1dsp_init_mips(dsp);
if (ARCH_LOONGARCH)
ff_vc1dsp_init_loongarch(dsp);
}
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