Make video denoiser tests standalone, not using the VideoProcessingTest fixture.

webrtc/modules/video_processing/test/denoiser_test.cc

 /*
  *  Copyright (c) 2015 The WebRTC 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 <string.h>
 
 #include <memory>
 
-#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
-#include "webrtc/modules/video_processing/include/video_processing.h"
-#include "webrtc/modules/video_processing/test/video_processing_unittest.h"
+#include "webrtc/common_video/include/video_frame_buffer.h"
 #include "webrtc/modules/video_processing/video_denoiser.h"
+#include "webrtc/test/gtest.h"
 #include "webrtc/test/frame_utils.h"
+#include "webrtc/test/testsupport/fileutils.h"
 
 namespace webrtc {
 
-TEST_F(VideoProcessingTest, CopyMem) {
+TEST(VideoDenoiserTest, CopyMem) {
   std::unique_ptr<DenoiserFilter> df_c(DenoiserFilter::Create(false, nullptr));
   std::unique_ptr<DenoiserFilter> df_sse_neon(
       DenoiserFilter::Create(true, nullptr));
   uint8_t src[16 * 16], dst[16 * 16];
   for (int i = 0; i < 16; ++i) {
     for (int j = 0; j < 16; ++j) {
       src[i * 16 + j] = i * 16 + j;
     }
   }
 
   memset(dst, 0, 16 * 16);
   df_c->CopyMem16x16(src, 16, dst, 16);
   EXPECT_EQ(0, memcmp(src, dst, 16 * 16));
 
   memset(dst, 0, 16 * 16);
   df_sse_neon->CopyMem16x16(src, 16, dst, 16);
   EXPECT_EQ(0, memcmp(src, dst, 16 * 16));
 }
 
-TEST_F(VideoProcessingTest, Variance) {
+TEST(VideoDenoiserTest, Variance) {
   std::unique_ptr<DenoiserFilter> df_c(DenoiserFilter::Create(false, nullptr));
   std::unique_ptr<DenoiserFilter> df_sse_neon(
       DenoiserFilter::Create(true, nullptr));
   uint8_t src[16 * 16], dst[16 * 16];
   uint32_t sum = 0, sse = 0, var;
   for (int i = 0; i < 16; ++i) {
     for (int j = 0; j < 16; ++j) {
       src[i * 16 + j] = i * 16 + j;
     }
   }
   // Compute the 16x8 variance of the 16x16 block.
   for (int i = 0; i < 8; ++i) {
     for (int j = 0; j < 16; ++j) {
       sum += (i * 32 + j);
       sse += (i * 32 + j) * (i * 32 + j);
     }
   }
   var = sse - ((sum * sum) >> 7);
   memset(dst, 0, 16 * 16);
   EXPECT_EQ(var, df_c->Variance16x8(src, 16, dst, 16, &sse));
   EXPECT_EQ(var, df_sse_neon->Variance16x8(src, 16, dst, 16, &sse));
 }
 
-TEST_F(VideoProcessingTest, MbDenoise) {
+TEST(VideoDenoiserTest, MbDenoise) {
   std::unique_ptr<DenoiserFilter> df_c(DenoiserFilter::Create(false, nullptr));
   std::unique_ptr<DenoiserFilter> df_sse_neon(
       DenoiserFilter::Create(true, nullptr));
   uint8_t running_src[16 * 16], src[16 * 16];
   uint8_t dst[16 * 16], dst_sse_neon[16 * 16];
 
   // Test case: |diff| <= |3 + shift_inc1|
   for (int i = 0; i < 16; ++i) {
     for (int j = 0; j < 16; ++j) {
       running_src[i * 16 + j] = i * 11 + j;
@@ skipping 40 matching lines @@
     }
   }
   memset(dst, 0, 16 * 16);
   DenoiserDecision decision =
       df_c->MbDenoise(running_src, 16, dst, 16, src, 16, 0, 1);
   EXPECT_EQ(COPY_BLOCK, decision);
   decision = df_sse_neon->MbDenoise(running_src, 16, dst, 16, src, 16, 0, 1);
   EXPECT_EQ(COPY_BLOCK, decision);
 }
 
-// TODO(nisse): Refactor to not use test fixture. Can use some static
-// helper method to open the input file.
-TEST_F(VideoProcessingTest, Denoiser) {
+TEST(VideoDenoiserTest, Denoiser) {
+  const int kWidth = 352;
+  const int kHeight = 288;
+
+  const std::string video_file =
+      webrtc::test::ResourcePath("foreman_cif", "yuv");
+  FILE* source_file = fopen(video_file.c_str(), "rb");
+  ASSERT_TRUE(source_file != nullptr)
+      << "Cannot open source file: " << video_file;
+
   // Used in swap buffer.
   int denoised_frame_toggle = 0;
   // Create pure C denoiser.
   VideoDenoiser denoiser_c(false);
   // Create SSE or NEON denoiser.
   VideoDenoiser denoiser_sse_neon(true);
   rtc::scoped_refptr<I420Buffer> denoised_frame_c;
   rtc::scoped_refptr<I420Buffer> denoised_frame_prev_c;
   rtc::scoped_refptr<I420Buffer> denoised_frame_sse_neon;
   rtc::scoped_refptr<I420Buffer> denoised_frame_prev_sse_neon;
 
   for (;;) {
     rtc::scoped_refptr<VideoFrameBuffer> video_frame_buffer(
-        test::ReadI420Buffer(width_, height_, source_file_));
+        test::ReadI420Buffer(kWidth, kHeight, source_file));
     if (!video_frame_buffer)
       break;
 
     rtc::scoped_refptr<I420Buffer>* p_denoised_c = &denoised_frame_c;
     rtc::scoped_refptr<I420Buffer>* p_denoised_prev_c = &denoised_frame_prev_c;
     rtc::scoped_refptr<I420Buffer>* p_denoised_sse_neon =
         &denoised_frame_sse_neon;
     rtc::scoped_refptr<I420Buffer>* p_denoised_prev_sse_neon =
         &denoised_frame_prev_sse_neon;
     // Swap the buffer to save one memcpy in DenoiseFrame.
     if (denoised_frame_toggle) {
       p_denoised_c = &denoised_frame_prev_c;
       p_denoised_prev_c = &denoised_frame_c;
       p_denoised_sse_neon = &denoised_frame_prev_sse_neon;
       p_denoised_prev_sse_neon = &denoised_frame_sse_neon;
     }
     denoiser_c.DenoiseFrame(video_frame_buffer,
                             p_denoised_c, p_denoised_prev_c,
                             false);
     denoiser_sse_neon.DenoiseFrame(video_frame_buffer,
                                    p_denoised_sse_neon,
                                    p_denoised_prev_sse_neon, false);
     // Invert the flag.
     denoised_frame_toggle ^= 1;
     // Denoising results should be the same for C and SSE/NEON denoiser.
     ASSERT_TRUE(test::FrameBufsEqual(*p_denoised_c, *p_denoised_sse_neon));
   }
-  ASSERT_NE(0, feof(source_file_)) << "Error reading source file";
+  ASSERT_NE(0, feof(source_file)) << "Error reading source file";
 }
 
 }  // namespace webrtc