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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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 <assert.h>
#include <stddef.h>
#include "checkasm.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/macros.h"
#include "libavutil/mem_internal.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/hpeldsp.h"
#define MAX_BLOCK_SIZE 16
#define MAX_HEIGHT 16
#define MAX_STRIDE 64
// BUF_SIZE is bigger than necessary in order to test strides > block width.
#define BUF_SIZE ((MAX_HEIGHT - 1) * MAX_STRIDE + MAX_BLOCK_SIZE)
// Due to hpel interpolation the input needs to have one more line than
// the output and the last line needs one more element.
// The input is not subject to alignment requirements; making the input buffer
// bigger (by MAX_BLOCK_SIZE - 1) allows us to use a random misalignment.
#define INPUT_BUF_SIZE (MAX_HEIGHT * MAX_STRIDE + MAX_BLOCK_SIZE + 1 + (MAX_BLOCK_SIZE - 1))
#define randomize_buffers(buf0, buf1) \
do { \
static_assert(sizeof(buf0) == sizeof(buf1), "Incompatible buffers"); \
static_assert(!(sizeof(buf0) % 4), "Tail handling needed"); \
static_assert(sizeof(buf0[0]) == 1 && sizeof(buf1[0]) == 1, \
"Pointer arithmetic needs to be adapted"); \
for (size_t k = 0; k < sizeof(buf0); k += 4) { \
uint32_t r = rnd(); \
AV_WN32A(buf0 + k, r); \
AV_WN32A(buf1 + k, r); \
} \
} while (0)
void checkasm_check_hpeldsp(void)
{
DECLARE_ALIGNED(MAX_BLOCK_SIZE, uint8_t, srcbuf0)[INPUT_BUF_SIZE];
DECLARE_ALIGNED(MAX_BLOCK_SIZE, uint8_t, srcbuf1)[INPUT_BUF_SIZE];
DECLARE_ALIGNED(MAX_BLOCK_SIZE, uint8_t, dstbuf0)[BUF_SIZE];
DECLARE_ALIGNED(MAX_BLOCK_SIZE, uint8_t, dstbuf1)[BUF_SIZE];
HpelDSPContext hdsp;
static const struct {
const char *name;
size_t offset;
unsigned nb_blocksizes;
} tests[] = {
#define TEST(NAME, NB) { .name = #NAME, .offset = offsetof(HpelDSPContext, NAME), .nb_blocksizes = NB }
TEST(put_pixels_tab, 4),
TEST(avg_pixels_tab, 4),
TEST(put_no_rnd_pixels_tab, 2), // put_no_rnd_pixels_tab only has two usable blocksizes
TEST(avg_no_rnd_pixels_tab, 1),
};
declare_func_emms(AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT, void, uint8_t *dst, const uint8_t *src, ptrdiff_t stride, int h);
ff_hpeldsp_init(&hdsp, AV_CODEC_FLAG_BITEXACT);
for (size_t i = 0; i < FF_ARRAY_ELEMS(tests); ++i) {
op_pixels_func (*func_tab)[4] = (op_pixels_func (*)[4])((char*)&hdsp + tests[i].offset);
for (unsigned j = 0; j < tests[i].nb_blocksizes; ++j) {
const unsigned blocksize = MAX_BLOCK_SIZE >> j;
// h must always be a multiple of four, except when width is two or four.
const unsigned h_mult = blocksize <= 4 ? 2 : 4;
for (unsigned dxy = 0; dxy < 4; ++dxy) {
if (check_func(func_tab[j][dxy], "%s[%u][%u]", tests[i].name, j, dxy)) {
// Don't always use output that is 16-aligned.
size_t dst_offset = (rnd() % (MAX_BLOCK_SIZE / blocksize)) * blocksize;
size_t src_offset = rnd() % MAX_BLOCK_SIZE;
ptrdiff_t stride = (rnd() % (MAX_STRIDE / blocksize) + 1) * blocksize;
const uint8_t *src0 = srcbuf0 + src_offset, *src1 = srcbuf1 + src_offset;
uint8_t *dst0 = dstbuf0 + dst_offset, *dst1 = dstbuf1 + dst_offset;
// Always use the same height for each test, so that comparisons of benchmarks
// from different instruction sets are meaningful.
static int saved_heights[FF_ARRAY_ELEMS(tests)][4][4];
int h = saved_heights[i][j][dxy];
if (!h)
saved_heights[i][j][dxy] = h = (rnd() % (MAX_HEIGHT / h_mult) + 1) * h_mult;
if (rnd() & 1) {
// Flip stride.
dst1 += (h - 1) * stride;
dst0 += (h - 1) * stride;
// Due to interpolation potentially h + 1 lines are read
// from src, hence h * stride.
src0 += h * stride;
src1 += h * stride;
stride = -stride;
}
randomize_buffers(srcbuf0, srcbuf1);
randomize_buffers(dstbuf0, dstbuf1);
call_ref(dst0, src0, stride, h);
call_new(dst1, src1, stride, h);
if (memcmp(srcbuf0, srcbuf1, sizeof(srcbuf0)) || memcmp(dstbuf0, dstbuf1, sizeof(dstbuf0)))
fail();
bench_new(dst0, src0, stride, h);
}
}
}
}
}
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