mirror of https://git.ffmpeg.org/ffmpeg.git
376 lines
14 KiB
C
376 lines
14 KiB
C
/*
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <string.h>
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#include "libavutil/common.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/mem.h"
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#include "libavutil/mem_internal.h"
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#include "libswscale/swscale.h"
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#include "libswscale/swscale_internal.h"
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#include "checkasm.h"
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#define randomize_buffers(buf, size) \
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do { \
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int j; \
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for (j = 0; j < size; j+=4) \
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AV_WN32(buf + j, rnd()); \
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} while (0)
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static void yuv2planeX_8_ref(const int16_t *filter, int filterSize,
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const int16_t **src, uint8_t *dest, int dstW,
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const uint8_t *dither, int offset)
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{
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// This corresponds to the yuv2planeX_8_c function
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int i;
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for (i = 0; i < dstW; i++) {
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int val = dither[(i + offset) & 7] << 12;
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int j;
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for (j = 0; j < filterSize; j++)
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val += src[j][i] * filter[j];
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dest[i]= av_clip_uint8(val >> 19);
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}
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}
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static int cmp_off_by_n(const uint8_t *ref, const uint8_t *test, size_t n, int accuracy)
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{
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for (size_t i = 0; i < n; i++) {
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if (abs(ref[i] - test[i]) > accuracy)
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return 1;
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}
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return 0;
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}
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static void print_data(uint8_t *p, size_t len, size_t offset)
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{
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size_t i = 0;
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for (; i < len; i++) {
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if (i % 8 == 0) {
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printf("0x%04zx: ", i+offset);
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}
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printf("0x%02x ", (uint32_t) p[i]);
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if (i % 8 == 7) {
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printf("\n");
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}
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}
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if (i % 8 != 0) {
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printf("\n");
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}
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}
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static size_t show_differences(uint8_t *a, uint8_t *b, size_t len)
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{
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for (size_t i = 0; i < len; i++) {
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if (a[i] != b[i]) {
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size_t offset_of_mismatch = i;
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size_t offset;
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if (i >= 8) i-=8;
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offset = i & (~7);
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printf("test a:\n");
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print_data(&a[offset], 32, offset);
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printf("\ntest b:\n");
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print_data(&b[offset], 32, offset);
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printf("\n");
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return offset_of_mismatch;
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}
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}
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return len;
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}
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static void check_yuv2yuv1(int accurate)
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{
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SwsContext *sws;
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SwsInternal *c;
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int osi, isi;
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int dstW, offset;
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size_t fail_offset;
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const int input_sizes[] = {8, 24, 128, 144, 256, 512};
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#define LARGEST_INPUT_SIZE 512
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const int offsets[] = {0, 3, 8, 11, 16, 19};
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const int OFFSET_SIZES = sizeof(offsets)/sizeof(offsets[0]);
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const char *accurate_str = (accurate) ? "accurate" : "approximate";
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declare_func(void,
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const int16_t *src, uint8_t *dest,
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int dstW, const uint8_t *dither, int offset);
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LOCAL_ALIGNED_16(int16_t, src_pixels, [LARGEST_INPUT_SIZE]);
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LOCAL_ALIGNED_16(uint8_t, dst0, [LARGEST_INPUT_SIZE]);
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LOCAL_ALIGNED_16(uint8_t, dst1, [LARGEST_INPUT_SIZE]);
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LOCAL_ALIGNED_8(uint8_t, dither, [8]);
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randomize_buffers((uint8_t*)dither, 8);
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randomize_buffers((uint8_t*)src_pixels, LARGEST_INPUT_SIZE * sizeof(int16_t));
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sws = sws_alloc_context();
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c = sws_internal(sws);
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if (accurate)
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c->flags |= SWS_ACCURATE_RND;
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if (sws_init_context(sws, NULL, NULL) < 0)
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fail();
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ff_sws_init_scale(c);
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for (isi = 0; isi < FF_ARRAY_ELEMS(input_sizes); ++isi) {
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dstW = input_sizes[isi];
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for (osi = 0; osi < OFFSET_SIZES; osi++) {
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offset = offsets[osi];
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if (check_func(c->yuv2plane1, "yuv2yuv1_%d_%d_%s", offset, dstW, accurate_str)){
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memset(dst0, 0, LARGEST_INPUT_SIZE * sizeof(dst0[0]));
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memset(dst1, 0, LARGEST_INPUT_SIZE * sizeof(dst1[0]));
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call_ref(src_pixels, dst0, dstW, dither, offset);
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call_new(src_pixels, dst1, dstW, dither, offset);
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if (cmp_off_by_n(dst0, dst1, dstW * sizeof(dst0[0]), accurate ? 0 : 2)) {
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fail();
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printf("failed: yuv2yuv1_%d_%di_%s\n", offset, dstW, accurate_str);
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fail_offset = show_differences(dst0, dst1, LARGEST_INPUT_SIZE * sizeof(dst0[0]));
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printf("failing values: src: 0x%04x dither: 0x%02x dst-c: %02x dst-asm: %02x\n",
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(int) src_pixels[fail_offset],
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(int) dither[(fail_offset + fail_offset) & 7],
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(int) dst0[fail_offset],
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(int) dst1[fail_offset]);
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}
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if(dstW == LARGEST_INPUT_SIZE)
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bench_new(src_pixels, dst1, dstW, dither, offset);
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}
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}
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}
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sws_freeContext(sws);
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}
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static void check_yuv2yuvX(int accurate)
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{
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SwsContext *sws;
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SwsInternal *c;
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int fsi, osi, isi, i, j;
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int dstW;
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#define LARGEST_FILTER 16
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// ff_yuv2planeX_8_sse2 can't handle odd filter sizes
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const int filter_sizes[] = {2, 4, 8, 16};
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const int FILTER_SIZES = sizeof(filter_sizes)/sizeof(filter_sizes[0]);
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#define LARGEST_INPUT_SIZE 512
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static const int input_sizes[] = {8, 24, 128, 144, 256, 512};
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const char *accurate_str = (accurate) ? "accurate" : "approximate";
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declare_func_emms(AV_CPU_FLAG_MMX, void, const int16_t *filter,
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int filterSize, const int16_t **src, uint8_t *dest,
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int dstW, const uint8_t *dither, int offset);
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const int16_t **src;
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LOCAL_ALIGNED_16(int16_t, src_pixels, [LARGEST_FILTER * LARGEST_INPUT_SIZE]);
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LOCAL_ALIGNED_16(int16_t, filter_coeff, [LARGEST_FILTER]);
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LOCAL_ALIGNED_16(uint8_t, dst0, [LARGEST_INPUT_SIZE]);
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LOCAL_ALIGNED_16(uint8_t, dst1, [LARGEST_INPUT_SIZE]);
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LOCAL_ALIGNED_16(uint8_t, dither, [LARGEST_INPUT_SIZE]);
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union VFilterData{
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const int16_t *src;
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uint16_t coeff[8];
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} *vFilterData;
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uint8_t d_val = rnd();
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memset(dither, d_val, LARGEST_INPUT_SIZE);
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randomize_buffers((uint8_t*)src_pixels, LARGEST_FILTER * LARGEST_INPUT_SIZE * sizeof(int16_t));
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sws = sws_alloc_context();
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c = sws_internal(sws);
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if (accurate)
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c->flags |= SWS_ACCURATE_RND;
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if (sws_init_context(sws, NULL, NULL) < 0)
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fail();
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ff_sws_init_scale(c);
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for(isi = 0; isi < FF_ARRAY_ELEMS(input_sizes); ++isi){
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dstW = input_sizes[isi];
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for(osi = 0; osi < 64; osi += 16){
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if (dstW <= osi)
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continue;
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for (fsi = 0; fsi < FILTER_SIZES; ++fsi) {
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// Generate filter coefficients for the given filter size,
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// with some properties:
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// - The coefficients add up to the intended sum (4096, 1<<12)
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// - The coefficients contain negative values
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// - The filter intermediates don't overflow for worst case
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// inputs (all positive coefficients are coupled with
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// input_max and all negative coefficients with input_min,
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// or vice versa).
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// Produce a filter with all coefficients set to
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// -((1<<12)/(filter_size-1)) except for one (randomly chosen)
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// which is set to ((1<<13)-1).
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for (i = 0; i < filter_sizes[fsi]; ++i)
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filter_coeff[i] = -((1 << 12) / (filter_sizes[fsi] - 1));
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filter_coeff[rnd() % filter_sizes[fsi]] = (1 << 13) - 1;
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src = av_malloc(sizeof(int16_t*) * filter_sizes[fsi]);
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vFilterData = av_malloc((filter_sizes[fsi] + 2) * sizeof(union VFilterData));
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memset(vFilterData, 0, (filter_sizes[fsi] + 2) * sizeof(union VFilterData));
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for (i = 0; i < filter_sizes[fsi]; ++i) {
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src[i] = &src_pixels[i * LARGEST_INPUT_SIZE];
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vFilterData[i].src = src[i] - osi;
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for(j = 0; j < 4; ++j)
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vFilterData[i].coeff[j + 4] = filter_coeff[i];
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}
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if (check_func(c->yuv2planeX, "yuv2yuvX_%d_%d_%d_%s", filter_sizes[fsi], osi, dstW, accurate_str)){
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// use vFilterData for the mmx function
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const int16_t *filter = c->use_mmx_vfilter ? (const int16_t*)vFilterData : &filter_coeff[0];
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memset(dst0, 0, LARGEST_INPUT_SIZE * sizeof(dst0[0]));
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memset(dst1, 0, LARGEST_INPUT_SIZE * sizeof(dst1[0]));
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// We can't use call_ref here, because we don't know if use_mmx_vfilter was set for that
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// function or not, so we can't pass it the parameters correctly.
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yuv2planeX_8_ref(&filter_coeff[0], filter_sizes[fsi], src, dst0, dstW - osi, dither, osi);
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call_new(filter, filter_sizes[fsi], src, dst1, dstW - osi, dither, osi);
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if (cmp_off_by_n(dst0, dst1, LARGEST_INPUT_SIZE * sizeof(dst0[0]), accurate ? 0 : 2)) {
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fail();
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printf("failed: yuv2yuvX_%d_%d_%d_%s\n", filter_sizes[fsi], osi, dstW, accurate_str);
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show_differences(dst0, dst1, LARGEST_INPUT_SIZE * sizeof(dst0[0]));
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}
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if(dstW == LARGEST_INPUT_SIZE)
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bench_new((const int16_t*)vFilterData, filter_sizes[fsi], src, dst1, dstW - osi, dither, osi);
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}
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av_freep(&src);
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av_freep(&vFilterData);
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}
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}
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}
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sws_freeContext(sws);
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#undef FILTER_SIZES
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}
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#undef SRC_PIXELS
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#define SRC_PIXELS 512
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static void check_hscale(void)
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{
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#define MAX_FILTER_WIDTH 40
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#define FILTER_SIZES 6
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static const int filter_sizes[FILTER_SIZES] = { 4, 8, 12, 16, 32, 40 };
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#define HSCALE_PAIRS 2
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static const int hscale_pairs[HSCALE_PAIRS][2] = {
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{ 8, 14 },
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{ 8, 18 },
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};
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#define LARGEST_INPUT_SIZE 512
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static const int input_sizes[] = {8, 24, 128, 144, 256, 512};
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int i, j, fsi, hpi, width, dstWi;
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SwsContext *sws;
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SwsInternal *c;
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// padded
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LOCAL_ALIGNED_32(uint8_t, src, [FFALIGN(SRC_PIXELS + MAX_FILTER_WIDTH - 1, 4)]);
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LOCAL_ALIGNED_32(uint32_t, dst0, [SRC_PIXELS]);
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LOCAL_ALIGNED_32(uint32_t, dst1, [SRC_PIXELS]);
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// padded
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LOCAL_ALIGNED_32(int16_t, filter, [SRC_PIXELS * MAX_FILTER_WIDTH + MAX_FILTER_WIDTH]);
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LOCAL_ALIGNED_32(int32_t, filterPos, [SRC_PIXELS]);
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LOCAL_ALIGNED_32(int16_t, filterAvx2, [SRC_PIXELS * MAX_FILTER_WIDTH + MAX_FILTER_WIDTH]);
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LOCAL_ALIGNED_32(int32_t, filterPosAvx, [SRC_PIXELS]);
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// The dst parameter here is either int16_t or int32_t but we use void* to
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// just cover both cases.
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declare_func(void, void *c, void *dst, int dstW,
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const uint8_t *src, const int16_t *filter,
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const int32_t *filterPos, int filterSize);
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sws = sws_alloc_context();
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if (sws_init_context(sws, NULL, NULL) < 0)
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fail();
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c = sws_internal(sws);
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randomize_buffers(src, SRC_PIXELS + MAX_FILTER_WIDTH - 1);
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for (hpi = 0; hpi < HSCALE_PAIRS; hpi++) {
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for (fsi = 0; fsi < FILTER_SIZES; fsi++) {
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for (dstWi = 0; dstWi < FF_ARRAY_ELEMS(input_sizes); dstWi++) {
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width = filter_sizes[fsi];
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c->srcBpc = hscale_pairs[hpi][0];
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c->dstBpc = hscale_pairs[hpi][1];
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c->hLumFilterSize = c->hChrFilterSize = width;
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for (i = 0; i < SRC_PIXELS; i++) {
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filterPos[i] = i;
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filterPosAvx[i] = i;
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// These filter cofficients are chosen to try break two corner
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// cases, namely:
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//
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// - Negative filter coefficients. The filters output signed
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// values, and it should be possible to end up with negative
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// output values.
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//
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// - Positive clipping. The hscale filter function has clipping
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// at (1<<15) - 1
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//
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// The coefficients sum to the 1.0 point for the hscale
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// functions (1 << 14).
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for (j = 0; j < width; j++) {
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filter[i * width + j] = -((1 << 14) / (width - 1));
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}
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filter[i * width + (rnd() % width)] = ((1 << 15) - 1);
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}
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for (i = 0; i < MAX_FILTER_WIDTH; i++) {
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// These values should be unused in SIMD implementations but
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// may still be read, random coefficients here should help show
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// issues where they are used in error.
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filter[SRC_PIXELS * width + i] = rnd();
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}
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c->dstW = c->chrDstW = input_sizes[dstWi];
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ff_sws_init_scale(c);
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memcpy(filterAvx2, filter, sizeof(uint16_t) * (SRC_PIXELS * MAX_FILTER_WIDTH + MAX_FILTER_WIDTH));
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ff_shuffle_filter_coefficients(c, filterPosAvx, width, filterAvx2, c->dstW);
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if (check_func(c->hcScale, "hscale_%d_to_%d__fs_%d_dstW_%d", c->srcBpc, c->dstBpc + 1, width, c->dstW)) {
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memset(dst0, 0, SRC_PIXELS * sizeof(dst0[0]));
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memset(dst1, 0, SRC_PIXELS * sizeof(dst1[0]));
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call_ref(NULL, dst0, c->dstW, src, filter, filterPos, width);
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call_new(NULL, dst1, c->dstW, src, filterAvx2, filterPosAvx, width);
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if (memcmp(dst0, dst1, c->dstW * sizeof(dst0[0])))
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fail();
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bench_new(NULL, dst0, c->dstW, src, filter, filterPosAvx, width);
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}
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}
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}
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}
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sws_freeContext(sws);
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}
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void checkasm_check_sw_scale(void)
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{
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check_hscale();
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report("hscale");
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check_yuv2yuv1(0);
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check_yuv2yuv1(1);
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report("yuv2yuv1");
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check_yuv2yuvX(0);
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check_yuv2yuvX(1);
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report("yuv2yuvX");
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}
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