From 7c2c2bea969b23f5cb64847afbcda90e2d480a59 Mon Sep 17 00:00:00 2001
From: Yunqing Wang <yunqingwang@google.com>
Date: Tue, 16 Dec 2014 11:10:20 -0800
Subject: [PATCH] vp9_ethread: add the multi-threaded encoder unit tests

The unit tests for VP9 multi-threaded encoder are added, which
carry out tests for all three modes(i.e. kTwoPassGood, kOnePassGood
and kRealTime), and speeds ranging from 1 to 8. A 1280x720 test
clip is used, which is encoded into multiple tiles. The number of
threads is num_of_tiles.

Change-Id: I04419eeca145ad841c9c527603668239a82e7fbd
---
 test/test.mk             |   1 +
 test/vp9_ethread_test.cc | 130 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 131 insertions(+)
 create mode 100644 test/vp9_ethread_test.cc

diff --git a/test/test.mk b/test/test.mk
index bd65759c5..e4a7b24e8 100644
--- a/test/test.mk
+++ b/test/test.mk
@@ -41,6 +41,7 @@ LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += cpu_speed_test.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += frame_size_tests.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += vp9_lossless_test.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += vp9_end_to_end_test.cc
+LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += vp9_ethread_test.cc
 
 LIBVPX_TEST_SRCS-yes                   += decode_test_driver.cc
 LIBVPX_TEST_SRCS-yes                   += decode_test_driver.h
diff --git a/test/vp9_ethread_test.cc b/test/vp9_ethread_test.cc
new file mode 100644
index 000000000..d309483c6
--- /dev/null
+++ b/test/vp9_ethread_test.cc
@@ -0,0 +1,130 @@
+/*
+ *  Copyright (c) 2014 The WebM 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>
+#include <vector>
+#include "third_party/googletest/src/include/gtest/gtest.h"
+#include "test/codec_factory.h"
+#include "test/encode_test_driver.h"
+#include "test/i420_video_source.h"
+#include "test/util.h"
+#include "test/md5_helper.h"
+
+namespace {
+class VP9EncoderThreadTest
+    : public ::libvpx_test::EncoderTest,
+      public ::libvpx_test::CodecTestWith2Params<libvpx_test::TestMode, int> {
+ protected:
+  VP9EncoderThreadTest()
+      : EncoderTest(GET_PARAM(0)),
+        tiles_(2),
+        encoding_mode_(GET_PARAM(1)),
+        set_cpu_used_(GET_PARAM(2)) {
+    init_flags_ = VPX_CODEC_USE_PSNR;
+    vpx_codec_dec_cfg_t cfg = vpx_codec_dec_cfg_t();
+    cfg.w = 1280;
+    cfg.h = 720;
+    decoder_ = codec_->CreateDecoder(cfg, 0);
+
+    md5_.clear();
+  }
+  virtual ~VP9EncoderThreadTest() {
+    delete decoder_;
+  }
+
+  virtual void SetUp() {
+    InitializeConfig();
+    SetMode(encoding_mode_);
+
+    if (encoding_mode_ != ::libvpx_test::kRealTime) {
+      cfg_.g_lag_in_frames = 3;
+      cfg_.rc_end_usage = VPX_VBR;
+      cfg_.rc_2pass_vbr_minsection_pct = 5;
+      cfg_.rc_2pass_vbr_minsection_pct = 2000;
+    } else {
+      cfg_.g_lag_in_frames = 0;
+      cfg_.rc_end_usage = VPX_CBR;
+      cfg_.g_error_resilient = 1;
+    }
+    cfg_.rc_max_quantizer = 56;
+    cfg_.rc_min_quantizer = 0;
+  }
+
+  virtual void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
+                                  ::libvpx_test::Encoder *encoder) {
+    if (video->frame() == 0) {
+      // Encode 4 column tiles.
+      encoder->Control(VP9E_SET_TILE_COLUMNS, tiles_);
+      encoder->Control(VP8E_SET_CPUUSED, set_cpu_used_);
+      if (encoding_mode_ != ::libvpx_test::kRealTime) {
+        encoder->Control(VP8E_SET_ENABLEAUTOALTREF, 1);
+        encoder->Control(VP8E_SET_ARNR_MAXFRAMES, 7);
+        encoder->Control(VP8E_SET_ARNR_STRENGTH, 5);
+        encoder->Control(VP8E_SET_ARNR_TYPE, 3);
+      } else {
+        encoder->Control(VP8E_SET_ENABLEAUTOALTREF, 0);
+      }
+    }
+  }
+
+  virtual void FramePktHook(const vpx_codec_cx_pkt_t *pkt) {
+    const vpx_codec_err_t res = decoder_->DecodeFrame(
+        reinterpret_cast<uint8_t*>(pkt->data.frame.buf), pkt->data.frame.sz);
+    if (res != VPX_CODEC_OK) {
+      abort_ = true;
+      ASSERT_EQ(VPX_CODEC_OK, res);
+    }
+    const vpx_image_t *img = decoder_->GetDxData().Next();
+
+    if (img) {
+      ::libvpx_test::MD5 md5_res;
+      md5_res.Add(img);
+      md5_.push_back(md5_res.Get());
+    }
+  }
+
+  int tiles_;
+  ::libvpx_test::TestMode encoding_mode_;
+  int set_cpu_used_;
+  ::libvpx_test::Decoder *decoder_;
+  std::vector<std::string> md5_;
+};
+
+TEST_P(VP9EncoderThreadTest, EncoderResultTest) {
+  std::vector<std::string> single_thr_md5, multi_thr_md5;
+
+  ::libvpx_test::I420VideoSource video("niklas_1280_720_30.yuv", 1280, 720,
+                                       50, 1, 15, 20);
+
+  cfg_.rc_target_bitrate = 1000;
+
+  // Encode using single thread.
+  cfg_.g_threads = 1;
+  init_flags_ = VPX_CODEC_USE_PSNR;
+  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
+  single_thr_md5 = md5_;
+  md5_.clear();
+
+  // Encode using multiple threads.
+  cfg_.g_threads = 4;
+  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
+  multi_thr_md5 = md5_;
+  md5_.clear();
+
+  // Compare to check if two vectors are equal.
+  ASSERT_EQ(single_thr_md5, multi_thr_md5);
+}
+
+VP9_INSTANTIATE_TEST_CASE(
+    VP9EncoderThreadTest,
+    ::testing::Values(::libvpx_test::kTwoPassGood, ::libvpx_test::kOnePassGood,
+                      ::libvpx_test::kRealTime),
+    ::testing::Range(1, 9));
+}  // namespace
-- 
2.40.0