зеркало из https://github.com/mozilla/gecko-dev.git
189 строки
7.6 KiB
C++
189 строки
7.6 KiB
C++
/*
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* Copyright 2011 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stdlib.h>
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#include <time.h>
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#include "libyuv/cpu_id.h"
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#include "libyuv/scale.h"
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#include "../unit_test/unit_test.h"
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namespace libyuv {
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// Test scaling with C vs Opt and return maximum pixel difference. 0 = exact.
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static int TestFilter(int src_width, int src_height,
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int dst_width, int dst_height,
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FilterMode f, int benchmark_iterations) {
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int i, j;
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const int b = 128;
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int src_width_uv = (Abs(src_width) + 1) >> 1;
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int src_height_uv = (Abs(src_height) + 1) >> 1;
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int src_y_plane_size = (Abs(src_width) + b * 2) * (Abs(src_height) + b * 2);
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int src_uv_plane_size = (src_width_uv + b * 2) * (src_height_uv + b * 2);
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int src_stride_y = b * 2 + Abs(src_width);
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int src_stride_uv = b * 2 + src_width_uv;
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align_buffer_page_end(src_y, src_y_plane_size)
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align_buffer_page_end(src_u, src_uv_plane_size)
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align_buffer_page_end(src_v, src_uv_plane_size)
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srandom(time(NULL));
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MemRandomize(src_y, src_y_plane_size);
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MemRandomize(src_u, src_uv_plane_size);
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MemRandomize(src_v, src_uv_plane_size);
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int dst_width_uv = (dst_width + 1) >> 1;
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int dst_height_uv = (dst_height + 1) >> 1;
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int dst_y_plane_size = (dst_width + b * 2) * (dst_height + b * 2);
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int dst_uv_plane_size = (dst_width_uv + b * 2) * (dst_height_uv + b * 2);
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int dst_stride_y = b * 2 + dst_width;
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int dst_stride_uv = b * 2 + dst_width_uv;
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align_buffer_page_end(dst_y_c, dst_y_plane_size)
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align_buffer_page_end(dst_u_c, dst_uv_plane_size)
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align_buffer_page_end(dst_v_c, dst_uv_plane_size)
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align_buffer_page_end(dst_y_opt, dst_y_plane_size)
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align_buffer_page_end(dst_u_opt, dst_uv_plane_size)
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align_buffer_page_end(dst_v_opt, dst_uv_plane_size)
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MaskCpuFlags(0); // Disable all CPU optimization.
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double c_time = get_time();
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I420Scale(src_y + (src_stride_y * b) + b, src_stride_y,
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src_u + (src_stride_uv * b) + b, src_stride_uv,
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src_v + (src_stride_uv * b) + b, src_stride_uv,
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src_width, src_height,
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dst_y_c + (dst_stride_y * b) + b, dst_stride_y,
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dst_u_c + (dst_stride_uv * b) + b, dst_stride_uv,
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dst_v_c + (dst_stride_uv * b) + b, dst_stride_uv,
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dst_width, dst_height, f);
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c_time = (get_time() - c_time);
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MaskCpuFlags(-1); // Enable all CPU optimization.
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double opt_time = get_time();
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for (i = 0; i < benchmark_iterations; ++i) {
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I420Scale(src_y + (src_stride_y * b) + b, src_stride_y,
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src_u + (src_stride_uv * b) + b, src_stride_uv,
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src_v + (src_stride_uv * b) + b, src_stride_uv,
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src_width, src_height,
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dst_y_opt + (dst_stride_y * b) + b, dst_stride_y,
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dst_u_opt + (dst_stride_uv * b) + b, dst_stride_uv,
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dst_v_opt + (dst_stride_uv * b) + b, dst_stride_uv,
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dst_width, dst_height, f);
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}
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opt_time = (get_time() - opt_time) / benchmark_iterations;
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// Report performance of C vs OPT
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printf("filter %d - %8d us C - %8d us OPT\n",
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f,
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static_cast<int>(c_time * 1e6),
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static_cast<int>(opt_time * 1e6));
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// C version may be a little off from the optimized. Order of
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// operations may introduce rounding somewhere. So do a difference
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// of the buffers and look to see that the max difference isn't
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// over 2.
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int max_diff = 0;
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for (i = b; i < (dst_height + b); ++i) {
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for (j = b; j < (dst_width + b); ++j) {
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int abs_diff = Abs(dst_y_c[(i * dst_stride_y) + j] -
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dst_y_opt[(i * dst_stride_y) + j]);
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if (abs_diff > max_diff) {
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max_diff = abs_diff;
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}
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}
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}
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for (i = b; i < (dst_height_uv + b); ++i) {
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for (j = b; j < (dst_width_uv + b); ++j) {
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int abs_diff = Abs(dst_u_c[(i * dst_stride_uv) + j] -
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dst_u_opt[(i * dst_stride_uv) + j]);
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if (abs_diff > max_diff) {
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max_diff = abs_diff;
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}
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abs_diff = Abs(dst_v_c[(i * dst_stride_uv) + j] -
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dst_v_opt[(i * dst_stride_uv) + j]);
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if (abs_diff > max_diff) {
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max_diff = abs_diff;
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}
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}
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}
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free_aligned_buffer_page_end(dst_y_c)
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free_aligned_buffer_page_end(dst_u_c)
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free_aligned_buffer_page_end(dst_v_c)
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free_aligned_buffer_page_end(dst_y_opt)
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free_aligned_buffer_page_end(dst_u_opt)
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free_aligned_buffer_page_end(dst_v_opt)
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free_aligned_buffer_page_end(src_y)
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free_aligned_buffer_page_end(src_u)
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free_aligned_buffer_page_end(src_v)
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return max_diff;
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}
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#define TEST_FACTOR1(name, filter, hfactor, vfactor, max_diff) \
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TEST_F(libyuvTest, ScaleDownBy##name##_##filter) { \
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int diff = TestFilter(benchmark_width_, benchmark_height_, \
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Abs(benchmark_width_) * hfactor, \
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Abs(benchmark_height_) * vfactor, \
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kFilter##filter, benchmark_iterations_); \
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EXPECT_LE(diff, max_diff); \
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}
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// Test a scale factor with all 4 filters. Expect unfiltered to be exact, but
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// filtering is different fixed point implementations for SSSE3, Neon and C.
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#define TEST_FACTOR(name, hfactor, vfactor) \
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TEST_FACTOR1(name, None, hfactor, vfactor, 0) \
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TEST_FACTOR1(name, Linear, hfactor, vfactor, 3) \
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TEST_FACTOR1(name, Bilinear, hfactor, vfactor, 3) \
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TEST_FACTOR1(name, Box, hfactor, vfactor, 3) \
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TEST_FACTOR(2, 1 / 2, 1 / 2)
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TEST_FACTOR(4, 1 / 4, 1 / 4)
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TEST_FACTOR(8, 1 / 8, 1 / 8)
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TEST_FACTOR(3by4, 3 / 4, 3 / 4)
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#undef TEST_FACTOR1
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#undef TEST_FACTOR
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#define TEST_SCALETO1(name, width, height, filter, max_diff) \
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TEST_F(libyuvTest, name##To##width##x##height##_##filter) { \
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int diff = TestFilter(benchmark_width_, benchmark_height_, \
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width, height, \
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kFilter##filter, benchmark_iterations_); \
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EXPECT_LE(diff, max_diff); \
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} \
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TEST_F(libyuvTest, name##From##width##x##height##_##filter) { \
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int diff = TestFilter(width, height, \
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Abs(benchmark_width_), Abs(benchmark_height_), \
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kFilter##filter, benchmark_iterations_); \
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EXPECT_LE(diff, max_diff); \
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}
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// Test scale to a specified size with all 4 filters.
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#define TEST_SCALETO(name, width, height) \
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TEST_SCALETO1(name, width, height, None, 0) \
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TEST_SCALETO1(name, width, height, Linear, 3) \
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TEST_SCALETO1(name, width, height, Bilinear, 3) \
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TEST_SCALETO1(name, width, height, Box, 3)
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TEST_SCALETO(Scale, 1, 1)
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TEST_SCALETO(Scale, 320, 240)
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TEST_SCALETO(Scale, 352, 288)
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TEST_SCALETO(Scale, 640, 360)
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TEST_SCALETO(Scale, 1280, 720)
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#undef TEST_SCALETO1
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#undef TEST_SCALETO
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} // namespace libyuv
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