The Tor Browser: media/libyuv/unit_test/scale_argb

media/libyuv/unit_test/scale_argb_test.cc@b8a032363ba2 (annotated)

media/libyuv/unit_test/scale_argb_test.cc

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /*
  *  Copyright 2011 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 #include <stdlib.h>
 #include <time.h>
 #include "libyuv/cpu_id.h"
 #include "libyuv/scale_argb.h"
 #include "libyuv/row.h"
 #include "../unit_test/unit_test.h"
 namespace libyuv {
 // Test scaling with C vs Opt and return maximum pixel difference. 0 = exact.
 static int ARGBTestFilter(int src_width, int src_height,
                           int dst_width, int dst_height,
                           FilterMode f, int benchmark_iterations) {
   const int b = 128;
   int i, j;
   int src_argb_plane_size = (Abs(src_width) + b * 2) *
       (Abs(src_height) + b * 2) * 4;
   int src_stride_argb = (b * 2 + Abs(src_width)) * 4;
   align_buffer_64(src_argb, src_argb_plane_size);
   srandom(time(NULL));
   MemRandomize(src_argb, src_argb_plane_size);
   int dst_argb_plane_size = (dst_width + b * 2) * (dst_height + b * 2) * 4;
   int dst_stride_argb = (b * 2 + dst_width) * 4;
   align_buffer_64(dst_argb_c, dst_argb_plane_size);
   align_buffer_64(dst_argb_opt, dst_argb_plane_size);
   memset(dst_argb_c, 2, dst_argb_plane_size);
   memset(dst_argb_opt, 3, dst_argb_plane_size);
   // Warm up both versions for consistent benchmarks.
   MaskCpuFlags(0);  // Disable all CPU optimization.
   ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
             src_width, src_height,
             dst_argb_c + (dst_stride_argb * b) + b * 4, dst_stride_argb,
             dst_width, dst_height, f);
   MaskCpuFlags(-1);  // Enable all CPU optimization.
   ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
             src_width, src_height,
             dst_argb_opt + (dst_stride_argb * b) + b * 4, dst_stride_argb,
             dst_width, dst_height, f);
   MaskCpuFlags(0);  // Disable all CPU optimization.
   double c_time = get_time();
   ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
             src_width, src_height,
             dst_argb_c + (dst_stride_argb * b) + b * 4, dst_stride_argb,
             dst_width, dst_height, f);
   c_time = (get_time() - c_time);
   MaskCpuFlags(-1);  // Enable all CPU optimization.
   double opt_time = get_time();
   for (i = 0; i < benchmark_iterations; ++i) {
     ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
               src_width, src_height,
               dst_argb_opt + (dst_stride_argb * b) + b * 4, dst_stride_argb,
               dst_width, dst_height, f);
   }
   opt_time = (get_time() - opt_time) / benchmark_iterations;
   // Report performance of C vs OPT
   printf("filter %d - %8d us C - %8d us OPT\n",
          f, static_cast<int>(c_time * 1e6), static_cast<int>(opt_time * 1e6));
   // C version may be a little off from the optimized. Order of
   //  operations may introduce rounding somewhere. So do a difference
   //  of the buffers and look to see that the max difference isn't
   //  over 2.
   int max_diff = 0;
   for (i = b; i < (dst_height + b); ++i) {
     for (j = b * 4; j < (dst_width + b) * 4; ++j) {
       int abs_diff = Abs(dst_argb_c[(i * dst_stride_argb) + j] -
                          dst_argb_opt[(i * dst_stride_argb) + j]);
       if (abs_diff > max_diff) {
         max_diff = abs_diff;
       }
     }
   }
   free_aligned_buffer_64(dst_argb_c);
   free_aligned_buffer_64(dst_argb_opt);
   free_aligned_buffer_64(src_argb);
   return max_diff;
 }
 static const int kTileX = 8;
 static const int kTileY = 8;
 static int TileARGBScale(const uint8* src_argb, int src_stride_argb,
                          int src_width, int src_height,
                          uint8* dst_argb, int dst_stride_argb,
                          int dst_width, int dst_height,
                          FilterMode filtering) {
   for (int y = 0; y < dst_height; y += kTileY) {
     for (int x = 0; x < dst_width; x += kTileX) {
       int clip_width = kTileX;
       if (x + clip_width > dst_width) {
         clip_width = dst_width - x;
       }
       int clip_height = kTileY;
       if (y + clip_height > dst_height) {
         clip_height = dst_height - y;
       }
       int r = ARGBScaleClip(src_argb, src_stride_argb,
                             src_width, src_height,
                             dst_argb, dst_stride_argb,
                             dst_width, dst_height,
                             x, y, clip_width, clip_height, filtering);
       if (r) {
         return r;
       }
     }
   }
   return 0;
 }
 static int ARGBClipTestFilter(int src_width, int src_height,
                               int dst_width, int dst_height,
                               FilterMode f, int benchmark_iterations) {
   const int b = 128;
   int src_argb_plane_size = (Abs(src_width) + b * 2) *
       (Abs(src_height) + b * 2) * 4;
   int src_stride_argb = (b * 2 + Abs(src_width)) * 4;
   align_buffer_64(src_argb, src_argb_plane_size);
   memset(src_argb, 1, src_argb_plane_size);
   int dst_argb_plane_size = (dst_width + b * 2) * (dst_height + b * 2) * 4;
   int dst_stride_argb = (b * 2 + dst_width) * 4;
   srandom(time(NULL));
   int i, j;
   for (i = b; i < (Abs(src_height) + b); ++i) {
     for (j = b; j < (Abs(src_width) + b) * 4; ++j) {
       src_argb[(i * src_stride_argb) + j] = (random() & 0xff);
     }
   }
   align_buffer_64(dst_argb_c, dst_argb_plane_size);
   align_buffer_64(dst_argb_opt, dst_argb_plane_size);
   memset(dst_argb_c, 2, dst_argb_plane_size);
   memset(dst_argb_opt, 3, dst_argb_plane_size);
   // Do full image, no clipping.
   double c_time = get_time();
   ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
             src_width, src_height,
             dst_argb_c + (dst_stride_argb * b) + b * 4, dst_stride_argb,
             dst_width, dst_height, f);
   c_time = (get_time() - c_time);
   // Do tiled image, clipping scale to a tile at a time.
   double opt_time = get_time();
   for (i = 0; i < benchmark_iterations; ++i) {
     TileARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
                   src_width, src_height,
                   dst_argb_opt + (dst_stride_argb * b) + b * 4, dst_stride_argb,
                   dst_width, dst_height, f);
   }
   opt_time = (get_time() - opt_time) / benchmark_iterations;
   // Report performance of Full vs Tiled.
   printf("filter %d - %8d us Full - %8d us Tiled\n",
          f, static_cast<int>(c_time * 1e6), static_cast<int>(opt_time * 1e6));
   // Compare full scaled image vs tiled image.
   int max_diff = 0;
   for (i = b; i < (dst_height + b); ++i) {
     for (j = b * 4; j < (dst_width + b) * 4; ++j) {
       int abs_diff = Abs(dst_argb_c[(i * dst_stride_argb) + j] -
                          dst_argb_opt[(i * dst_stride_argb) + j]);
       if (abs_diff > max_diff) {
         max_diff = abs_diff;
       }
     }
   }
   free_aligned_buffer_64(dst_argb_c);
   free_aligned_buffer_64(dst_argb_opt);
   free_aligned_buffer_64(src_argb);
   return max_diff;
 }
 #define TEST_FACTOR1(name, filter, hfactor, vfactor, max_diff)                 \
     TEST_F(libyuvTest, ARGBScaleDownBy##name##_##filter) {                     \
       int diff = ARGBTestFilter(benchmark_width_, benchmark_height_,           \
                                 Abs(benchmark_width_) * hfactor,               \
                                 Abs(benchmark_height_) * vfactor,              \
                                 kFilter##filter, benchmark_iterations_);       \
       EXPECT_LE(diff, max_diff);                                               \
     }                                                                          \
     TEST_F(libyuvTest, ARGBScaleDownClipBy##name##_##filter) {                 \
       int diff = ARGBClipTestFilter(benchmark_width_, benchmark_height_,       \
                                 Abs(benchmark_width_) * hfactor,               \
                                 Abs(benchmark_height_) * vfactor,              \
                                 kFilter##filter, benchmark_iterations_);       \
       EXPECT_LE(diff, max_diff);                                               \
     }
 // Test a scale factor with 2 filters.  Expect unfiltered to be exact, but
 // filtering is different fixed point implementations for SSSE3, Neon and C.
 #define TEST_FACTOR(name, hfactor, vfactor)                                    \
     TEST_FACTOR1(name, None, hfactor, vfactor, 2)                              \
     TEST_FACTOR1(name, Linear, hfactor, vfactor, 2)                            \
     TEST_FACTOR1(name, Bilinear, hfactor, vfactor, 2)                          \
     TEST_FACTOR1(name, Box, hfactor, vfactor, 2)
 TEST_FACTOR(2, 1 / 2, 1 / 2)
 TEST_FACTOR(4, 1 / 4, 1 / 4)
 TEST_FACTOR(8, 1 / 8, 1 / 8)
 TEST_FACTOR(3by4, 3 / 4, 3 / 4)
 #undef TEST_FACTOR1
 #undef TEST_FACTOR
 #define TEST_SCALETO1(name, width, height, filter, max_diff)                   \
     TEST_F(libyuvTest, name##To##width##x##height##_##filter) {                \
       int diff = ARGBTestFilter(benchmark_width_, benchmark_height_,           \
                                 width, height,                                 \
                                 kFilter##filter, benchmark_iterations_);       \
       EXPECT_LE(diff, max_diff);                                               \
     }                                                                          \
     TEST_F(libyuvTest, name##From##width##x##height##_##filter) {              \
       int diff = ARGBTestFilter(width, height,                                 \
                                 Abs(benchmark_width_), Abs(benchmark_height_), \
                                 kFilter##filter, benchmark_iterations_);       \
       EXPECT_LE(diff, max_diff);                                               \
     }                                                                          \
     TEST_F(libyuvTest, name##ClipTo##width##x##height##_##filter) {            \
       int diff = ARGBClipTestFilter(benchmark_width_, benchmark_height_,       \
                                 width, height,                                 \
                                 kFilter##filter, benchmark_iterations_);       \
       EXPECT_LE(diff, max_diff);                                               \
     }                                                                          \
     TEST_F(libyuvTest, name##ClipFrom##width##x##height##_##filter) {          \
       int diff = ARGBClipTestFilter(width, height,                             \
                                 Abs(benchmark_width_), Abs(benchmark_height_), \
                                 kFilter##filter, benchmark_iterations_);       \
       EXPECT_LE(diff, max_diff);                                               \
     }
 /// Test scale to a specified size with all 4 filters.
 #define TEST_SCALETO(name, width, height)                                      \
     TEST_SCALETO1(name, width, height, None, 0)                                \
     TEST_SCALETO1(name, width, height, Linear, 3)                              \
     TEST_SCALETO1(name, width, height, Bilinear, 3)                            \
     TEST_SCALETO1(name, width, height, Box, 3)
 TEST_SCALETO(ARGBScale, 1, 1)
 TEST_SCALETO(ARGBScale, 320, 240)
 TEST_SCALETO(ARGBScale, 352, 288)
 TEST_SCALETO(ARGBScale, 640, 360)
 TEST_SCALETO(ARGBScale, 1280, 720)
 #undef TEST_SCALETO1
 #undef TEST_SCALETO
 }  // namespace libyuv

The Tor Browser / annotate

media/libyuv/unit_test/scale_argb_test.cc@b8a032363ba2 (annotated)

media/libyuv/unit_test/scale_argb_test.cc