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/*
* Copyright (c) 2018 Yingming Fan <yingmingfan@gmail.com>
*
* 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 <string.h>
#include "libavutil/intreadwrite.h"
#include "libavutil/mem_internal.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/hevcdsp.h"
#include "checkasm.h"
static const uint32_t pixel_mask[3] = { 0xffffffff, 0x03ff03ff, 0x0fff0fff };
static const uint32_t sao_size[5] = {8, 16, 32, 48, 64};
#define SIZEOF_PIXEL ((bit_depth + 7) / 8)
#define PIXEL_STRIDE (2*MAX_PB_SIZE + AV_INPUT_BUFFER_PADDING_SIZE) //same with sao_edge src_stride
#define BUF_SIZE (PIXEL_STRIDE * (64+2) * 2) //+2 for top and bottom row, *2 for high bit depth
#define OFFSET_THRESH (1 << (bit_depth - 5))
#define OFFSET_LENGTH 5
#define randomize_buffers(buf0, buf1, size) \
do { \
uint32_t mask = pixel_mask[(bit_depth - 8) >> 1]; \
int k; \
for (k = 0; k < size; k += 4) { \
uint32_t r = rnd() & mask; \
AV_WN32A(buf0 + k, r); \
AV_WN32A(buf1 + k, r); \
} \
} while (0)
#define randomize_buffers2(buf, size) \
do { \
uint32_t max_offset = OFFSET_THRESH; \
int k; \
if (bit_depth == 8) { \
for (k = 0; k < size; k++) { \
uint8_t r = rnd() % max_offset; \
buf[k] = r; \
} \
} else { \
for (k = 0; k < size; k++) { \
uint16_t r = rnd() % max_offset; \
buf[k] = r; \
} \
} \
} while (0)
static void check_sao_band(HEVCDSPContext *h, int bit_depth)
{
int i;
LOCAL_ALIGNED_32(uint8_t, dst0, [BUF_SIZE]);
LOCAL_ALIGNED_32(uint8_t, dst1, [BUF_SIZE]);
LOCAL_ALIGNED_32(uint8_t, src0, [BUF_SIZE]);
LOCAL_ALIGNED_32(uint8_t, src1, [BUF_SIZE]);
int16_t offset_val[OFFSET_LENGTH];
int left_class = rnd()%32;
for (i = 0; i <= 4; i++) {
int block_size = sao_size[i];
int prev_size = i > 0 ? sao_size[i - 1] : 0;
ptrdiff_t stride = PIXEL_STRIDE*SIZEOF_PIXEL;
declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *dst, uint8_t *src, ptrdiff_t dst_stride, ptrdiff_t src_stride,
int16_t *sao_offset_val, int sao_left_class, int width, int height);
if (check_func(h->sao_band_filter[i], "hevc_sao_band_%d_%d", block_size, bit_depth)) {
for (int w = prev_size + 4; w <= block_size; w += 4) {
randomize_buffers(src0, src1, BUF_SIZE);
randomize_buffers2(offset_val, OFFSET_LENGTH);
memset(dst0, 0, BUF_SIZE);
memset(dst1, 0, BUF_SIZE);
call_ref(dst0, src0, stride, stride, offset_val, left_class, w, block_size);
call_new(dst1, src1, stride, stride, offset_val, left_class, w, block_size);
for (int j = 0; j < block_size; j++) {
if (memcmp(dst0 + j*stride, dst1 + j*stride, w*SIZEOF_PIXEL))
fail();
}
}
bench_new(dst1, src1, stride, stride, offset_val, left_class, block_size, block_size);
}
}
}
static void check_sao_edge(HEVCDSPContext *h, int bit_depth)
{
int i;
LOCAL_ALIGNED_32(uint8_t, dst0, [BUF_SIZE]);
LOCAL_ALIGNED_32(uint8_t, dst1, [BUF_SIZE]);
LOCAL_ALIGNED_32(uint8_t, src0, [BUF_SIZE]);
LOCAL_ALIGNED_32(uint8_t, src1, [BUF_SIZE]);
int16_t offset_val[OFFSET_LENGTH];
int eo = rnd()%4;
for (i = 0; i <= 4; i++) {
int block_size = sao_size[i];
int prev_size = i > 0 ? sao_size[i - 1] : 0;
ptrdiff_t stride = PIXEL_STRIDE*SIZEOF_PIXEL;
int offset = (AV_INPUT_BUFFER_PADDING_SIZE + PIXEL_STRIDE)*SIZEOF_PIXEL;
declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *dst, uint8_t *src, ptrdiff_t stride_dst,
int16_t *sao_offset_val, int eo, int width, int height);
for (int w = prev_size + 4; w <= block_size; w += 4) {
randomize_buffers(src0, src1, BUF_SIZE);
randomize_buffers2(offset_val, OFFSET_LENGTH);
memset(dst0, 0, BUF_SIZE);
memset(dst1, 0, BUF_SIZE);
if (check_func(h->sao_edge_filter[i], "hevc_sao_edge_%d_%d", block_size, bit_depth)) {
call_ref(dst0, src0 + offset, stride, offset_val, eo, w, block_size);
call_new(dst1, src1 + offset, stride, offset_val, eo, w, block_size);
for (int j = 0; j < block_size; j++) {
if (memcmp(dst0 + j*stride, dst1 + j*stride, w*SIZEOF_PIXEL))
fail();
}
}
bench_new(dst1, src1 + offset, stride, offset_val, eo, block_size, block_size);
}
}
}
void checkasm_check_hevc_sao(void)
{
int bit_depth;
for (bit_depth = 8; bit_depth <= 12; bit_depth += 2) {
HEVCDSPContext h;
ff_hevc_dsp_init(&h, bit_depth);
check_sao_band(&h, bit_depth);
}
report("sao_band");
for (bit_depth = 8; bit_depth <= 12; bit_depth += 2) {
HEVCDSPContext h;
ff_hevc_dsp_init(&h, bit_depth);
check_sao_edge(&h, bit_depth);
}
report("sao_edge");
}
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