mirror of
https://git.ffmpeg.org/ffmpeg.git
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100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/*
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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 <stddef.h>
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#include <stdint.h>
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#include "checkasm.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/mem_internal.h"
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#include "libavutil/pixelutils.h"
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enum {
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LOG2_MIN_DIMENSION = 1,
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LOG2_MAX_DIMENSION = 5,
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BUF_SIZE = 4096, ///< arbitrary
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};
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#define randomize_buffer(buf) \
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do { \
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for (size_t k = 0; k < sizeof(buf); k += 4) { \
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uint32_t r = rnd(); \
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AV_WN32A(buf + k, r); \
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} \
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} while (0)
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static void checkasm_check_sad(void)
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{
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DECLARE_ALIGNED(32, uint8_t, buf1)[BUF_SIZE];
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DECLARE_ALIGNED(32, uint8_t, buf2)[BUF_SIZE];
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int inited = 0;
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declare_func(int, const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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for (int i = LOG2_MIN_DIMENSION; i <= LOG2_MAX_DIMENSION; ++i) {
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const size_t width = 1 << i, height = 1 << i;
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for (int aligned = 0; aligned <= 2; ++aligned) {
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av_pixelutils_sad_fn fn = av_pixelutils_get_sad_fn(i, i, aligned, NULL);
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if (check_func(fn, "sad_%zux%zu_%d", width, width, aligned)) {
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const uint8_t *src1 = buf1 + ((aligned != 0) ? 0 : rnd() % width);
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const uint8_t *src2 = buf2 + ((aligned == 2) ? 0 : rnd() % width);
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// stride * (height - 1) needs to be so small that the alignment offset
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// and the last line fit into the remaining buffer.
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size_t max_stride = (BUF_SIZE - 2 * width) / (height - 1);
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ptrdiff_t stride1 = 1 + rnd() % max_stride;
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ptrdiff_t stride2 = 1 + rnd() % max_stride;
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if (aligned != 0)
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stride1 &= ~(width - 1);
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if (aligned == 2)
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stride2 &= ~(width - 1);
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if (rnd() & 1) { // negate stride
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src1 += (height - 1) * stride1;
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stride1 = -stride1;
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}
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if (rnd() & 1) { // negate stride
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src2 += (height - 1) * stride2;
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stride2 = -stride2;
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}
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if (!inited) {
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randomize_buffer(buf1);
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randomize_buffer(buf2);
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inited = 1;
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}
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int res_ref = call_ref(src1, stride1, src2, stride2);
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int ref_new = call_new(src1, stride1, src2, stride2);
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if (res_ref != ref_new)
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fail();
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bench_new(src1, stride1, src2, stride2);
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}
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}
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}
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}
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void checkasm_check_pixelutils(void)
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{
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checkasm_check_sad();
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report("sad");
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}
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