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FFmpeg/libavcodec/me_cmp.c
Michael Niedermayer 371265f0ec avcodec/me_cmp: Fix type check 
Fixes: CID1604375 Out-of-bounds read

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-12 22:42:40 +02:00

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/*
* DSP utils
* Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* 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
*/
#include <stddef.h>
#include "libavutil/attributes.h"
#include "libavutil/internal.h"
#include "libavutil/mem_internal.h"
#include "avcodec.h"
#include "copy_block.h"
#include "simple_idct.h"
#include "me_cmp.h"
#include "mpegvideoenc.h"
#include "config.h"
#include "config_components.h"
/* (i - 256) * (i - 256) */
const uint32_t ff_square_tab[512] = {
65536, 65025, 64516, 64009, 63504, 63001, 62500, 62001, 61504, 61009, 60516, 60025, 59536, 59049, 58564, 58081,
57600, 57121, 56644, 56169, 55696, 55225, 54756, 54289, 53824, 53361, 52900, 52441, 51984, 51529, 51076, 50625,
50176, 49729, 49284, 48841, 48400, 47961, 47524, 47089, 46656, 46225, 45796, 45369, 44944, 44521, 44100, 43681,
43264, 42849, 42436, 42025, 41616, 41209, 40804, 40401, 40000, 39601, 39204, 38809, 38416, 38025, 37636, 37249,
36864, 36481, 36100, 35721, 35344, 34969, 34596, 34225, 33856, 33489, 33124, 32761, 32400, 32041, 31684, 31329,
30976, 30625, 30276, 29929, 29584, 29241, 28900, 28561, 28224, 27889, 27556, 27225, 26896, 26569, 26244, 25921,
25600, 25281, 24964, 24649, 24336, 24025, 23716, 23409, 23104, 22801, 22500, 22201, 21904, 21609, 21316, 21025,
20736, 20449, 20164, 19881, 19600, 19321, 19044, 18769, 18496, 18225, 17956, 17689, 17424, 17161, 16900, 16641,
16384, 16129, 15876, 15625, 15376, 15129, 14884, 14641, 14400, 14161, 13924, 13689, 13456, 13225, 12996, 12769,
12544, 12321, 12100, 11881, 11664, 11449, 11236, 11025, 10816, 10609, 10404, 10201, 10000, 9801, 9604, 9409,
9216, 9025, 8836, 8649, 8464, 8281, 8100, 7921, 7744, 7569, 7396, 7225, 7056, 6889, 6724, 6561,
6400, 6241, 6084, 5929, 5776, 5625, 5476, 5329, 5184, 5041, 4900, 4761, 4624, 4489, 4356, 4225,
4096, 3969, 3844, 3721, 3600, 3481, 3364, 3249, 3136, 3025, 2916, 2809, 2704, 2601, 2500, 2401,
2304, 2209, 2116, 2025, 1936, 1849, 1764, 1681, 1600, 1521, 1444, 1369, 1296, 1225, 1156, 1089,
1024, 961, 900, 841, 784, 729, 676, 625, 576, 529, 484, 441, 400, 361, 324, 289,
256, 225, 196, 169, 144, 121, 100, 81, 64, 49, 36, 25, 16, 9, 4, 1,
0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225,
256, 289, 324, 361, 400, 441, 484, 529, 576, 625, 676, 729, 784, 841, 900, 961,
1024, 1089, 1156, 1225, 1296, 1369, 1444, 1521, 1600, 1681, 1764, 1849, 1936, 2025, 2116, 2209,
2304, 2401, 2500, 2601, 2704, 2809, 2916, 3025, 3136, 3249, 3364, 3481, 3600, 3721, 3844, 3969,
4096, 4225, 4356, 4489, 4624, 4761, 4900, 5041, 5184, 5329, 5476, 5625, 5776, 5929, 6084, 6241,
6400, 6561, 6724, 6889, 7056, 7225, 7396, 7569, 7744, 7921, 8100, 8281, 8464, 8649, 8836, 9025,
9216, 9409, 9604, 9801, 10000, 10201, 10404, 10609, 10816, 11025, 11236, 11449, 11664, 11881, 12100, 12321,
12544, 12769, 12996, 13225, 13456, 13689, 13924, 14161, 14400, 14641, 14884, 15129, 15376, 15625, 15876, 16129,
16384, 16641, 16900, 17161, 17424, 17689, 17956, 18225, 18496, 18769, 19044, 19321, 19600, 19881, 20164, 20449,
20736, 21025, 21316, 21609, 21904, 22201, 22500, 22801, 23104, 23409, 23716, 24025, 24336, 24649, 24964, 25281,
25600, 25921, 26244, 26569, 26896, 27225, 27556, 27889, 28224, 28561, 28900, 29241, 29584, 29929, 30276, 30625,
30976, 31329, 31684, 32041, 32400, 32761, 33124, 33489, 33856, 34225, 34596, 34969, 35344, 35721, 36100, 36481,
36864, 37249, 37636, 38025, 38416, 38809, 39204, 39601, 40000, 40401, 40804, 41209, 41616, 42025, 42436, 42849,
43264, 43681, 44100, 44521, 44944, 45369, 45796, 46225, 46656, 47089, 47524, 47961, 48400, 48841, 49284, 49729,
50176, 50625, 51076, 51529, 51984, 52441, 52900, 53361, 53824, 54289, 54756, 55225, 55696, 56169, 56644, 57121,
57600, 58081, 58564, 59049, 59536, 60025, 60516, 61009, 61504, 62001, 62500, 63001, 63504, 64009, 64516, 65025,
};
static int sse4_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
const uint32_t *sq = ff_square_tab + 256;
for (i = 0; i < h; i++) {
s += sq[pix1[0] - pix2[0]];
s += sq[pix1[1] - pix2[1]];
s += sq[pix1[2] - pix2[2]];
s += sq[pix1[3] - pix2[3]];
pix1 += stride;
pix2 += stride;
}
return s;
}
static int sse8_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
const uint32_t *sq = ff_square_tab + 256;
for (i = 0; i < h; i++) {
s += sq[pix1[0] - pix2[0]];
s += sq[pix1[1] - pix2[1]];
s += sq[pix1[2] - pix2[2]];
s += sq[pix1[3] - pix2[3]];
s += sq[pix1[4] - pix2[4]];
s += sq[pix1[5] - pix2[5]];
s += sq[pix1[6] - pix2[6]];
s += sq[pix1[7] - pix2[7]];
pix1 += stride;
pix2 += stride;
}
return s;
}
static int sse16_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
const uint32_t *sq = ff_square_tab + 256;
for (i = 0; i < h; i++) {
s += sq[pix1[0] - pix2[0]];
s += sq[pix1[1] - pix2[1]];
s += sq[pix1[2] - pix2[2]];
s += sq[pix1[3] - pix2[3]];
s += sq[pix1[4] - pix2[4]];
s += sq[pix1[5] - pix2[5]];
s += sq[pix1[6] - pix2[6]];
s += sq[pix1[7] - pix2[7]];
s += sq[pix1[8] - pix2[8]];
s += sq[pix1[9] - pix2[9]];
s += sq[pix1[10] - pix2[10]];
s += sq[pix1[11] - pix2[11]];
s += sq[pix1[12] - pix2[12]];
s += sq[pix1[13] - pix2[13]];
s += sq[pix1[14] - pix2[14]];
s += sq[pix1[15] - pix2[15]];
pix1 += stride;
pix2 += stride;
}
return s;
}
static int sum_abs_dctelem_c(const int16_t *block)
{
int sum = 0, i;
for (i = 0; i < 64; i++)
sum += FFABS(block[i]);
return sum;
}
#define avg2(a, b) (((a) + (b) + 1) >> 1)
#define avg4(a, b, c, d) (((a) + (b) + (c) + (d) + 2) >> 2)
static inline int pix_abs16_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
for (i = 0; i < h; i++) {
s += abs(pix1[0] - pix2[0]);
s += abs(pix1[1] - pix2[1]);
s += abs(pix1[2] - pix2[2]);
s += abs(pix1[3] - pix2[3]);
s += abs(pix1[4] - pix2[4]);
s += abs(pix1[5] - pix2[5]);
s += abs(pix1[6] - pix2[6]);
s += abs(pix1[7] - pix2[7]);
s += abs(pix1[8] - pix2[8]);
s += abs(pix1[9] - pix2[9]);
s += abs(pix1[10] - pix2[10]);
s += abs(pix1[11] - pix2[11]);
s += abs(pix1[12] - pix2[12]);
s += abs(pix1[13] - pix2[13]);
s += abs(pix1[14] - pix2[14]);
s += abs(pix1[15] - pix2[15]);
pix1 += stride;
pix2 += stride;
}
return s;
}
static inline int pix_median_abs16_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i, j;
#define V(x) (pix1[x] - pix2[x])
s += abs(V(0));
s += abs(V(1) - V(0));
s += abs(V(2) - V(1));
s += abs(V(3) - V(2));
s += abs(V(4) - V(3));
s += abs(V(5) - V(4));
s += abs(V(6) - V(5));
s += abs(V(7) - V(6));
s += abs(V(8) - V(7));
s += abs(V(9) - V(8));
s += abs(V(10) - V(9));
s += abs(V(11) - V(10));
s += abs(V(12) - V(11));
s += abs(V(13) - V(12));
s += abs(V(14) - V(13));
s += abs(V(15) - V(14));
pix1 += stride;
pix2 += stride;
for (i = 1; i < h; i++) {
s += abs(V(0) - V(-stride));
for (j = 1; j < 16; j++)
s += abs(V(j) - mid_pred(V(j-stride), V(j-1), V(j-stride) + V(j-1) - V(j-stride-1)));
pix1 += stride;
pix2 += stride;
}
#undef V
return s;
}
static int pix_abs16_x2_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
for (i = 0; i < h; i++) {
s += abs(pix1[0] - avg2(pix2[0], pix2[1]));
s += abs(pix1[1] - avg2(pix2[1], pix2[2]));
s += abs(pix1[2] - avg2(pix2[2], pix2[3]));
s += abs(pix1[3] - avg2(pix2[3], pix2[4]));
s += abs(pix1[4] - avg2(pix2[4], pix2[5]));
s += abs(pix1[5] - avg2(pix2[5], pix2[6]));
s += abs(pix1[6] - avg2(pix2[6], pix2[7]));
s += abs(pix1[7] - avg2(pix2[7], pix2[8]));
s += abs(pix1[8] - avg2(pix2[8], pix2[9]));
s += abs(pix1[9] - avg2(pix2[9], pix2[10]));
s += abs(pix1[10] - avg2(pix2[10], pix2[11]));
s += abs(pix1[11] - avg2(pix2[11], pix2[12]));
s += abs(pix1[12] - avg2(pix2[12], pix2[13]));
s += abs(pix1[13] - avg2(pix2[13], pix2[14]));
s += abs(pix1[14] - avg2(pix2[14], pix2[15]));
s += abs(pix1[15] - avg2(pix2[15], pix2[16]));
pix1 += stride;
pix2 += stride;
}
return s;
}
static int pix_abs16_y2_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
const uint8_t *pix3 = pix2 + stride;
for (i = 0; i < h; i++) {
s += abs(pix1[0] - avg2(pix2[0], pix3[0]));
s += abs(pix1[1] - avg2(pix2[1], pix3[1]));
s += abs(pix1[2] - avg2(pix2[2], pix3[2]));
s += abs(pix1[3] - avg2(pix2[3], pix3[3]));
s += abs(pix1[4] - avg2(pix2[4], pix3[4]));
s += abs(pix1[5] - avg2(pix2[5], pix3[5]));
s += abs(pix1[6] - avg2(pix2[6], pix3[6]));
s += abs(pix1[7] - avg2(pix2[7], pix3[7]));
s += abs(pix1[8] - avg2(pix2[8], pix3[8]));
s += abs(pix1[9] - avg2(pix2[9], pix3[9]));
s += abs(pix1[10] - avg2(pix2[10], pix3[10]));
s += abs(pix1[11] - avg2(pix2[11], pix3[11]));
s += abs(pix1[12] - avg2(pix2[12], pix3[12]));
s += abs(pix1[13] - avg2(pix2[13], pix3[13]));
s += abs(pix1[14] - avg2(pix2[14], pix3[14]));
s += abs(pix1[15] - avg2(pix2[15], pix3[15]));
pix1 += stride;
pix2 += stride;
pix3 += stride;
}
return s;
}
static int pix_abs16_xy2_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
const uint8_t *pix3 = pix2 + stride;
for (i = 0; i < h; i++) {
s += abs(pix1[0] - avg4(pix2[0], pix2[1], pix3[0], pix3[1]));
s += abs(pix1[1] - avg4(pix2[1], pix2[2], pix3[1], pix3[2]));
s += abs(pix1[2] - avg4(pix2[2], pix2[3], pix3[2], pix3[3]));
s += abs(pix1[3] - avg4(pix2[3], pix2[4], pix3[3], pix3[4]));
s += abs(pix1[4] - avg4(pix2[4], pix2[5], pix3[4], pix3[5]));
s += abs(pix1[5] - avg4(pix2[5], pix2[6], pix3[5], pix3[6]));
s += abs(pix1[6] - avg4(pix2[6], pix2[7], pix3[6], pix3[7]));
s += abs(pix1[7] - avg4(pix2[7], pix2[8], pix3[7], pix3[8]));
s += abs(pix1[8] - avg4(pix2[8], pix2[9], pix3[8], pix3[9]));
s += abs(pix1[9] - avg4(pix2[9], pix2[10], pix3[9], pix3[10]));
s += abs(pix1[10] - avg4(pix2[10], pix2[11], pix3[10], pix3[11]));
s += abs(pix1[11] - avg4(pix2[11], pix2[12], pix3[11], pix3[12]));
s += abs(pix1[12] - avg4(pix2[12], pix2[13], pix3[12], pix3[13]));
s += abs(pix1[13] - avg4(pix2[13], pix2[14], pix3[13], pix3[14]));
s += abs(pix1[14] - avg4(pix2[14], pix2[15], pix3[14], pix3[15]));
s += abs(pix1[15] - avg4(pix2[15], pix2[16], pix3[15], pix3[16]));
pix1 += stride;
pix2 += stride;
pix3 += stride;
}
return s;
}
static inline int pix_abs8_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
for (i = 0; i < h; i++) {
s += abs(pix1[0] - pix2[0]);
s += abs(pix1[1] - pix2[1]);
s += abs(pix1[2] - pix2[2]);
s += abs(pix1[3] - pix2[3]);
s += abs(pix1[4] - pix2[4]);
s += abs(pix1[5] - pix2[5]);
s += abs(pix1[6] - pix2[6]);
s += abs(pix1[7] - pix2[7]);
pix1 += stride;
pix2 += stride;
}
return s;
}
static inline int pix_median_abs8_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i, j;
#define V(x) (pix1[x] - pix2[x])
s += abs(V(0));
s += abs(V(1) - V(0));
s += abs(V(2) - V(1));
s += abs(V(3) - V(2));
s += abs(V(4) - V(3));
s += abs(V(5) - V(4));
s += abs(V(6) - V(5));
s += abs(V(7) - V(6));
pix1 += stride;
pix2 += stride;
for (i = 1; i < h; i++) {
s += abs(V(0) - V(-stride));
for (j = 1; j < 8; j++)
s += abs(V(j) - mid_pred(V(j-stride), V(j-1), V(j-stride) + V(j-1) - V(j-stride-1)));
pix1 += stride;
pix2 += stride;
}
#undef V
return s;
}
static int pix_abs8_x2_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
for (i = 0; i < h; i++) {
s += abs(pix1[0] - avg2(pix2[0], pix2[1]));
s += abs(pix1[1] - avg2(pix2[1], pix2[2]));
s += abs(pix1[2] - avg2(pix2[2], pix2[3]));
s += abs(pix1[3] - avg2(pix2[3], pix2[4]));
s += abs(pix1[4] - avg2(pix2[4], pix2[5]));
s += abs(pix1[5] - avg2(pix2[5], pix2[6]));
s += abs(pix1[6] - avg2(pix2[6], pix2[7]));
s += abs(pix1[7] - avg2(pix2[7], pix2[8]));
pix1 += stride;
pix2 += stride;
}
return s;
}
static int pix_abs8_y2_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
const uint8_t *pix3 = pix2 + stride;
for (i = 0; i < h; i++) {
s += abs(pix1[0] - avg2(pix2[0], pix3[0]));
s += abs(pix1[1] - avg2(pix2[1], pix3[1]));
s += abs(pix1[2] - avg2(pix2[2], pix3[2]));
s += abs(pix1[3] - avg2(pix2[3], pix3[3]));
s += abs(pix1[4] - avg2(pix2[4], pix3[4]));
s += abs(pix1[5] - avg2(pix2[5], pix3[5]));
s += abs(pix1[6] - avg2(pix2[6], pix3[6]));
s += abs(pix1[7] - avg2(pix2[7], pix3[7]));
pix1 += stride;
pix2 += stride;
pix3 += stride;
}
return s;
}
static int pix_abs8_xy2_c(MpegEncContext *v, const uint8_t *pix1, const uint8_t *pix2,
ptrdiff_t stride, int h)
{
int s = 0, i;
const uint8_t *pix3 = pix2 + stride;
for (i = 0; i < h; i++) {
s += abs(pix1[0] - avg4(pix2[0], pix2[1], pix3[0], pix3[1]));
s += abs(pix1[1] - avg4(pix2[1], pix2[2], pix3[1], pix3[2]));
s += abs(pix1[2] - avg4(pix2[2], pix2[3], pix3[2], pix3[3]));
s += abs(pix1[3] - avg4(pix2[3], pix2[4], pix3[3], pix3[4]));
s += abs(pix1[4] - avg4(pix2[4], pix2[5], pix3[4], pix3[5]));
s += abs(pix1[5] - avg4(pix2[5], pix2[6], pix3[5], pix3[6]));
s += abs(pix1[6] - avg4(pix2[6], pix2[7], pix3[6], pix3[7]));
s += abs(pix1[7] - avg4(pix2[7], pix2[8], pix3[7], pix3[8]));
pix1 += stride;
pix2 += stride;
pix3 += stride;
}
return s;
}
static int nsse16_c(MpegEncContext *c, const uint8_t *s1, const uint8_t *s2,
ptrdiff_t stride, int h)
{
int score1 = 0, score2 = 0, x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < 16; x++)
score1 += (s1[x] - s2[x]) * (s1[x] - s2[x]);
if (y + 1 < h) {
for (x = 0; x < 15; x++)
score2 += FFABS(s1[x] - s1[x + stride] -
s1[x + 1] + s1[x + stride + 1]) -
FFABS(s2[x] - s2[x + stride] -
s2[x + 1] + s2[x + stride + 1]);
}
s1 += stride;
s2 += stride;
}
if (c)
return score1 + FFABS(score2) * c->avctx->nsse_weight;
else
return score1 + FFABS(score2) * 8;
}
static int nsse8_c(MpegEncContext *c, const uint8_t *s1, const uint8_t *s2,
ptrdiff_t stride, int h)
{
int score1 = 0, score2 = 0, x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < 8; x++)
score1 += (s1[x] - s2[x]) * (s1[x] - s2[x]);
if (y + 1 < h) {
for (x = 0; x < 7; x++)
score2 += FFABS(s1[x] - s1[x + stride] -
s1[x + 1] + s1[x + stride + 1]) -
FFABS(s2[x] - s2[x + stride] -
s2[x + 1] + s2[x + stride + 1]);
}
s1 += stride;
s2 += stride;
}
if (c)
return score1 + FFABS(score2) * c->avctx->nsse_weight;
else
return score1 + FFABS(score2) * 8;
}
static int zero_cmp(MpegEncContext *s, const uint8_t *a, const uint8_t *b,
ptrdiff_t stride, int h)
{
return 0;
}
av_cold int ff_set_cmp(const MECmpContext *c, me_cmp_func *cmp, int type, int mpvenc)
{
#define ENTRY(CMP_FLAG, ARRAY, MPVENC_ONLY) \
[FF_CMP_ ## CMP_FLAG] = { \
.offset = offsetof(MECmpContext, ARRAY), \
.mpv_only = MPVENC_ONLY, \
.available = 1, \
}
static const struct {
char available;
char mpv_only;
uint16_t offset;
} cmp_func_list[] = {
ENTRY(SAD, sad, 0),
ENTRY(SSE, sse, 0),
ENTRY(SATD, hadamard8_diff, 0),
ENTRY(DCT, dct_sad, 1),
ENTRY(PSNR, quant_psnr, 1),
ENTRY(BIT, bit, 1),
ENTRY(RD, rd, 1),
ENTRY(VSAD, vsad, 0),
ENTRY(VSSE, vsse, 0),
ENTRY(NSSE, nsse, 0),
#if CONFIG_SNOW_DECODER || CONFIG_SNOW_ENCODER
ENTRY(W53, w53, 0),
ENTRY(W97, w97, 0),
#endif
ENTRY(DCTMAX, dct_max, 1),
#if CONFIG_GPL
ENTRY(DCT264, dct264_sad, 1),
#endif
ENTRY(MEDIAN_SAD, median_sad, 0),
};
const me_cmp_func *me_cmp_func_array;
type &= 0xFF;
if (type == FF_CMP_ZERO) {
for (int i = 0; i < 6; i++)
cmp[i] = zero_cmp;
return 0;
}
if (type >= FF_ARRAY_ELEMS(cmp_func_list) ||
!cmp_func_list[type].available ||
!mpvenc && cmp_func_list[type].mpv_only) {
av_log(NULL, AV_LOG_ERROR,
"invalid cmp function selection\n");
return AVERROR(EINVAL);
}
me_cmp_func_array = (const me_cmp_func*)(((const char*)c) + cmp_func_list[type].offset);
for (int i = 0; i < 6; i++)
cmp[i] = me_cmp_func_array[i];
return 0;
}
#define BUTTERFLY2(o1, o2, i1, i2) \
o1 = (i1) + (i2); \
o2 = (i1) - (i2);
#define BUTTERFLY1(x, y) \
{ \
int a, b; \
a = x; \
b = y; \
x = a + b; \
y = a - b; \
}
#define BUTTERFLYA(x, y) (FFABS((x) + (y)) + FFABS((x) - (y)))
static int hadamard8_diff8x8_c(MpegEncContext *s, const uint8_t *dst,
const uint8_t *src, ptrdiff_t stride, int h)
{
int i, temp[64], sum = 0;
for (i = 0; i < 8; i++) {
// FIXME: try pointer walks
BUTTERFLY2(temp[8 * i + 0], temp[8 * i + 1],
src[stride * i + 0] - dst[stride * i + 0],
src[stride * i + 1] - dst[stride * i + 1]);
BUTTERFLY2(temp[8 * i + 2], temp[8 * i + 3],
src[stride * i + 2] - dst[stride * i + 2],
src[stride * i + 3] - dst[stride * i + 3]);
BUTTERFLY2(temp[8 * i + 4], temp[8 * i + 5],
src[stride * i + 4] - dst[stride * i + 4],
src[stride * i + 5] - dst[stride * i + 5]);
BUTTERFLY2(temp[8 * i + 6], temp[8 * i + 7],
src[stride * i + 6] - dst[stride * i + 6],
src[stride * i + 7] - dst[stride * i + 7]);
BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 2]);
BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 3]);
BUTTERFLY1(temp[8 * i + 4], temp[8 * i + 6]);
BUTTERFLY1(temp[8 * i + 5], temp[8 * i + 7]);
BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 4]);
BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 5]);
BUTTERFLY1(temp[8 * i + 2], temp[8 * i + 6]);
BUTTERFLY1(temp[8 * i + 3], temp[8 * i + 7]);
}
for (i = 0; i < 8; i++) {
BUTTERFLY1(temp[8 * 0 + i], temp[8 * 1 + i]);
BUTTERFLY1(temp[8 * 2 + i], temp[8 * 3 + i]);
BUTTERFLY1(temp[8 * 4 + i], temp[8 * 5 + i]);
BUTTERFLY1(temp[8 * 6 + i], temp[8 * 7 + i]);
BUTTERFLY1(temp[8 * 0 + i], temp[8 * 2 + i]);
BUTTERFLY1(temp[8 * 1 + i], temp[8 * 3 + i]);
BUTTERFLY1(temp[8 * 4 + i], temp[8 * 6 + i]);
BUTTERFLY1(temp[8 * 5 + i], temp[8 * 7 + i]);
sum += BUTTERFLYA(temp[8 * 0 + i], temp[8 * 4 + i]) +
BUTTERFLYA(temp[8 * 1 + i], temp[8 * 5 + i]) +
BUTTERFLYA(temp[8 * 2 + i], temp[8 * 6 + i]) +
BUTTERFLYA(temp[8 * 3 + i], temp[8 * 7 + i]);
}
return sum;
}
static int hadamard8_intra8x8_c(MpegEncContext *s, const uint8_t *src,
const uint8_t *dummy, ptrdiff_t stride, int h)
{
int i, temp[64], sum = 0;
for (i = 0; i < 8; i++) {
// FIXME: try pointer walks
BUTTERFLY2(temp[8 * i + 0], temp[8 * i + 1],
src[stride * i + 0], src[stride * i + 1]);
BUTTERFLY2(temp[8 * i + 2], temp[8 * i + 3],
src[stride * i + 2], src[stride * i + 3]);
BUTTERFLY2(temp[8 * i + 4], temp[8 * i + 5],
src[stride * i + 4], src[stride * i + 5]);
BUTTERFLY2(temp[8 * i + 6], temp[8 * i + 7],
src[stride * i + 6], src[stride * i + 7]);
BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 2]);
BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 3]);
BUTTERFLY1(temp[8 * i + 4], temp[8 * i + 6]);
BUTTERFLY1(temp[8 * i + 5], temp[8 * i + 7]);
BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 4]);
BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 5]);
BUTTERFLY1(temp[8 * i + 2], temp[8 * i + 6]);
BUTTERFLY1(temp[8 * i + 3], temp[8 * i + 7]);
}
for (i = 0; i < 8; i++) {
BUTTERFLY1(temp[8 * 0 + i], temp[8 * 1 + i]);
BUTTERFLY1(temp[8 * 2 + i], temp[8 * 3 + i]);
BUTTERFLY1(temp[8 * 4 + i], temp[8 * 5 + i]);
BUTTERFLY1(temp[8 * 6 + i], temp[8 * 7 + i]);
BUTTERFLY1(temp[8 * 0 + i], temp[8 * 2 + i]);
BUTTERFLY1(temp[8 * 1 + i], temp[8 * 3 + i]);
BUTTERFLY1(temp[8 * 4 + i], temp[8 * 6 + i]);
BUTTERFLY1(temp[8 * 5 + i], temp[8 * 7 + i]);
sum +=
BUTTERFLYA(temp[8 * 0 + i], temp[8 * 4 + i])
+ BUTTERFLYA(temp[8 * 1 + i], temp[8 * 5 + i])
+ BUTTERFLYA(temp[8 * 2 + i], temp[8 * 6 + i])
+ BUTTERFLYA(temp[8 * 3 + i], temp[8 * 7 + i]);
}
sum -= FFABS(temp[8 * 0] + temp[8 * 4]); // -mean
return sum;
}
static int dct_sad8x8_c(MpegEncContext *s, const uint8_t *src1,
const uint8_t *src2, ptrdiff_t stride, int h)
{
LOCAL_ALIGNED_16(int16_t, temp, [64]);
s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
s->fdsp.fdct(temp);
return s->sum_abs_dctelem(temp);
}
#if CONFIG_GPL
#define DCT8_1D \
{ \
const int s07 = SRC(0) + SRC(7); \
const int s16 = SRC(1) + SRC(6); \
const int s25 = SRC(2) + SRC(5); \
const int s34 = SRC(3) + SRC(4); \
const int a0 = s07 + s34; \
const int a1 = s16 + s25; \
const int a2 = s07 - s34; \
const int a3 = s16 - s25; \
const int d07 = SRC(0) - SRC(7); \
const int d16 = SRC(1) - SRC(6); \
const int d25 = SRC(2) - SRC(5); \
const int d34 = SRC(3) - SRC(4); \
const int a4 = d16 + d25 + (d07 + (d07 >> 1)); \
const int a5 = d07 - d34 - (d25 + (d25 >> 1)); \
const int a6 = d07 + d34 - (d16 + (d16 >> 1)); \
const int a7 = d16 - d25 + (d34 + (d34 >> 1)); \
DST(0, a0 + a1); \
DST(1, a4 + (a7 >> 2)); \
DST(2, a2 + (a3 >> 1)); \
DST(3, a5 + (a6 >> 2)); \
DST(4, a0 - a1); \
DST(5, a6 - (a5 >> 2)); \
DST(6, (a2 >> 1) - a3); \
DST(7, (a4 >> 2) - a7); \
}
static int dct264_sad8x8_c(MpegEncContext *s, const uint8_t *src1,
const uint8_t *src2, ptrdiff_t stride, int h)
{
int16_t dct[8][8];
int i, sum = 0;
s->pdsp.diff_pixels_unaligned(dct[0], src1, src2, stride);
#define SRC(x) dct[i][x]
#define DST(x, v) dct[i][x] = v
for (i = 0; i < 8; i++)
DCT8_1D
#undef SRC
#undef DST
#define SRC(x) dct[x][i]
#define DST(x, v) sum += FFABS(v)
for (i = 0; i < 8; i++)
DCT8_1D
#undef SRC
#undef DST
return sum;
}
#endif
static int dct_max8x8_c(MpegEncContext *s, const uint8_t *src1,
const uint8_t *src2, ptrdiff_t stride, int h)
{
LOCAL_ALIGNED_16(int16_t, temp, [64]);
int sum = 0, i;
s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
s->fdsp.fdct(temp);
for (i = 0; i < 64; i++)
sum = FFMAX(sum, FFABS(temp[i]));
return sum;
}
static int quant_psnr8x8_c(MpegEncContext *s, const uint8_t *src1,
const uint8_t *src2, ptrdiff_t stride, int h)
{
LOCAL_ALIGNED_16(int16_t, temp, [64 * 2]);
int16_t *const bak = temp + 64;
int sum = 0, i;
s->mb_intra = 0;
s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
memcpy(bak, temp, 64 * sizeof(int16_t));
s->block_last_index[0 /* FIXME */] =
s->dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
s->dct_unquantize_inter(s, temp, 0, s->qscale);
ff_simple_idct_int16_8bit(temp); // FIXME
for (i = 0; i < 64; i++)
sum += (temp[i] - bak[i]) * (temp[i] - bak[i]);
return sum;
}
static int rd8x8_c(MpegEncContext *s, const uint8_t *src1, const uint8_t *src2,
ptrdiff_t stride, int h)
{
const uint8_t *scantable = s->intra_scantable.permutated;
LOCAL_ALIGNED_16(int16_t, temp, [64]);
LOCAL_ALIGNED_16(uint8_t, lsrc1, [64]);
LOCAL_ALIGNED_16(uint8_t, lsrc2, [64]);
int i, last, run, bits, level, distortion, start_i;
const int esc_length = s->ac_esc_length;
uint8_t *length, *last_length;
copy_block8(lsrc1, src1, 8, stride, 8);
copy_block8(lsrc2, src2, 8, stride, 8);
s->pdsp.diff_pixels(temp, lsrc1, lsrc2, 8);
s->block_last_index[0 /* FIXME */] =
last =
s->dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
bits = 0;
if (s->mb_intra) {
start_i = 1;
length = s->intra_ac_vlc_length;
last_length = s->intra_ac_vlc_last_length;
bits += s->luma_dc_vlc_length[temp[0] + 256]; // FIXME: chroma
} else {
start_i = 0;
length = s->inter_ac_vlc_length;
last_length = s->inter_ac_vlc_last_length;
}
if (last >= start_i) {
run = 0;
for (i = start_i; i < last; i++) {
int j = scantable[i];
level = temp[j];
if (level) {
level += 64;
if ((level & (~127)) == 0)
bits += length[UNI_AC_ENC_INDEX(run, level)];
else
bits += esc_length;
run = 0;
} else
run++;
}
i = scantable[last];
level = temp[i] + 64;
av_assert2(level - 64);
if ((level & (~127)) == 0) {
bits += last_length[UNI_AC_ENC_INDEX(run, level)];
} else
bits += esc_length;
}
if (last >= 0) {
if (s->mb_intra)
s->dct_unquantize_intra(s, temp, 0, s->qscale);
else
s->dct_unquantize_inter(s, temp, 0, s->qscale);
}
s->idsp.idct_add(lsrc2, 8, temp);
distortion = s->sse_cmp[1](NULL, lsrc2, lsrc1, 8, 8);
return distortion + ((bits * s->qscale * s->qscale * 109 + 64) >> 7);
}
static int bit8x8_c(MpegEncContext *s, const uint8_t *src1, const uint8_t *src2,
ptrdiff_t stride, int h)
{
const uint8_t *scantable = s->intra_scantable.permutated;
LOCAL_ALIGNED_16(int16_t, temp, [64]);
int i, last, run, bits, level, start_i;
const int esc_length = s->ac_esc_length;
uint8_t *length, *last_length;
s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
s->block_last_index[0 /* FIXME */] =
last =
s->dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
bits = 0;
if (s->mb_intra) {
start_i = 1;
length = s->intra_ac_vlc_length;
last_length = s->intra_ac_vlc_last_length;
bits += s->luma_dc_vlc_length[temp[0] + 256]; // FIXME: chroma
} else {
start_i = 0;
length = s->inter_ac_vlc_length;
last_length = s->inter_ac_vlc_last_length;
}
if (last >= start_i) {
run = 0;
for (i = start_i; i < last; i++) {
int j = scantable[i];
level = temp[j];
if (level) {
level += 64;
if ((level & (~127)) == 0)
bits += length[UNI_AC_ENC_INDEX(run, level)];
else
bits += esc_length;
run = 0;
} else
run++;
}
i = scantable[last];
level = temp[i] + 64;
av_assert2(level - 64);
if ((level & (~127)) == 0)
bits += last_length[UNI_AC_ENC_INDEX(run, level)];
else
bits += esc_length;
}
return bits;
}
#define VSAD_INTRA(size) \
static int vsad_intra ## size ## _c(MpegEncContext *c, \
const uint8_t *s, const uint8_t *dummy, \
ptrdiff_t stride, int h) \
{ \
int score = 0, x, y; \
\
for (y = 1; y < h; y++) { \
for (x = 0; x < size; x += 4) { \
score += FFABS(s[x] - s[x + stride]) + \
FFABS(s[x + 1] - s[x + stride + 1]) + \
FFABS(s[x + 2] - s[x + 2 + stride]) + \
FFABS(s[x + 3] - s[x + 3 + stride]); \
} \
s += stride; \
} \
\
return score; \
}
VSAD_INTRA(8)
VSAD_INTRA(16)
#define VSAD(size) \
static int vsad ## size ## _c(MpegEncContext *c, \
const uint8_t *s1, const uint8_t *s2, \
ptrdiff_t stride, int h) \
{ \
int score = 0, x, y; \
\
for (y = 1; y < h; y++) { \
for (x = 0; x < size; x++) \
score += FFABS(s1[x] - s2[x] - s1[x + stride] + s2[x + stride]); \
s1 += stride; \
s2 += stride; \
} \
\
return score; \
}
VSAD(8)
VSAD(16)
#define SQ(a) ((a) * (a))
#define VSSE_INTRA(size) \
static int vsse_intra ## size ## _c(MpegEncContext *c, \
const uint8_t *s, const uint8_t *dummy, \
ptrdiff_t stride, int h) \
{ \
int score = 0, x, y; \
\
for (y = 1; y < h; y++) { \
for (x = 0; x < size; x += 4) { \
score += SQ(s[x] - s[x + stride]) + \
SQ(s[x + 1] - s[x + stride + 1]) + \
SQ(s[x + 2] - s[x + stride + 2]) + \
SQ(s[x + 3] - s[x + stride + 3]); \
} \
s += stride; \
} \
\
return score; \
}
VSSE_INTRA(8)
VSSE_INTRA(16)
#define VSSE(size) \
static int vsse ## size ## _c(MpegEncContext *c, const uint8_t *s1, const uint8_t *s2, \
ptrdiff_t stride, int h) \
{ \
int score = 0, x, y; \
\
for (y = 1; y < h; y++) { \
for (x = 0; x < size; x++) \
score += SQ(s1[x] - s2[x] - s1[x + stride] + s2[x + stride]); \
s1 += stride; \
s2 += stride; \
} \
\
return score; \
}
VSSE(8)
VSSE(16)
#define WRAPPER8_16_SQ(name8, name16) \
static int name16(MpegEncContext *s, const uint8_t *dst, const uint8_t *src, \
ptrdiff_t stride, int h) \
{ \
int score = 0; \
\
score += name8(s, dst, src, stride, 8); \
score += name8(s, dst + 8, src + 8, stride, 8); \
if (h == 16) { \
dst += 8 * stride; \
src += 8 * stride; \
score += name8(s, dst, src, stride, 8); \
score += name8(s, dst + 8, src + 8, stride, 8); \
} \
return score; \
}
WRAPPER8_16_SQ(hadamard8_diff8x8_c, hadamard8_diff16_c)
WRAPPER8_16_SQ(hadamard8_intra8x8_c, hadamard8_intra16_c)
WRAPPER8_16_SQ(dct_sad8x8_c, dct_sad16_c)
#if CONFIG_GPL
WRAPPER8_16_SQ(dct264_sad8x8_c, dct264_sad16_c)
#endif
WRAPPER8_16_SQ(dct_max8x8_c, dct_max16_c)
WRAPPER8_16_SQ(quant_psnr8x8_c, quant_psnr16_c)
WRAPPER8_16_SQ(rd8x8_c, rd16_c)
WRAPPER8_16_SQ(bit8x8_c, bit16_c)
av_cold void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
{
memset(c, 0, sizeof(*c));
c->sum_abs_dctelem = sum_abs_dctelem_c;
/* TODO [0] 16 [1] 8 */
c->pix_abs[0][0] = pix_abs16_c;
c->pix_abs[0][1] = pix_abs16_x2_c;
c->pix_abs[0][2] = pix_abs16_y2_c;
c->pix_abs[0][3] = pix_abs16_xy2_c;
c->pix_abs[1][0] = pix_abs8_c;
c->pix_abs[1][1] = pix_abs8_x2_c;
c->pix_abs[1][2] = pix_abs8_y2_c;
c->pix_abs[1][3] = pix_abs8_xy2_c;
#define SET_CMP_FUNC(name) \
c->name[0] = name ## 16_c; \
c->name[1] = name ## 8x8_c;
SET_CMP_FUNC(hadamard8_diff)
c->hadamard8_diff[4] = hadamard8_intra16_c;
c->hadamard8_diff[5] = hadamard8_intra8x8_c;
SET_CMP_FUNC(dct_sad)
SET_CMP_FUNC(dct_max)
#if CONFIG_GPL
SET_CMP_FUNC(dct264_sad)
#endif
c->sad[0] = pix_abs16_c;
c->sad[1] = pix_abs8_c;
c->sse[0] = sse16_c;
c->sse[1] = sse8_c;
c->sse[2] = sse4_c;
SET_CMP_FUNC(quant_psnr)
SET_CMP_FUNC(rd)
SET_CMP_FUNC(bit)
c->vsad[0] = vsad16_c;
c->vsad[1] = vsad8_c;
c->vsad[4] = vsad_intra16_c;
c->vsad[5] = vsad_intra8_c;
c->vsse[0] = vsse16_c;
c->vsse[1] = vsse8_c;
c->vsse[4] = vsse_intra16_c;
c->vsse[5] = vsse_intra8_c;
c->nsse[0] = nsse16_c;
c->nsse[1] = nsse8_c;
#if CONFIG_SNOW_DECODER || CONFIG_SNOW_ENCODER
ff_dsputil_init_dwt(c);
#endif
c->median_sad[0] = pix_median_abs16_c;
c->median_sad[1] = pix_median_abs8_c;
#if ARCH_AARCH64
ff_me_cmp_init_aarch64(c, avctx);
#elif ARCH_ARM
ff_me_cmp_init_arm(c, avctx);
#elif ARCH_PPC
ff_me_cmp_init_ppc(c, avctx);
#elif ARCH_RISCV
ff_me_cmp_init_riscv(c, avctx);
#elif ARCH_X86
ff_me_cmp_init_x86(c, avctx);
#elif ARCH_MIPS
ff_me_cmp_init_mips(c, avctx);
#endif
}
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