1 files changed, 126 insertions, 0 deletions
diff --git a/libs/libaom/src/test/lossless_test.cc b/libs/libaom/src/test/lossless_test.cc
new file mode 100644
index 000000000..71ae5e72b
--- /dev/null
+++ b/libs/libaom/src/test/lossless_test.cc
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+
+#include "config/aom_config.h"
+
+#include "test/codec_factory.h"
+#include "test/encode_test_driver.h"
+#include "test/i420_video_source.h"
+#include "test/util.h"
+#include "test/y4m_video_source.h"
+
+namespace {
+
+const int kMaxPsnr = 100;
+
+class LosslessTestLarge
+    : public ::libaom_test::CodecTestWithParam<libaom_test::TestMode>,
+      public ::libaom_test::EncoderTest {
+ protected:
+  LosslessTestLarge()
+      : EncoderTest(GET_PARAM(0)), psnr_(kMaxPsnr), nframes_(0),
+        encoding_mode_(GET_PARAM(1)) {}
+
+  virtual ~LosslessTestLarge() {}
+
+  virtual void SetUp() {
+    InitializeConfig();
+    SetMode(encoding_mode_);
+  }
+
+  virtual void PreEncodeFrameHook(::libaom_test::VideoSource *video,
+                                  ::libaom_test::Encoder *encoder) {
+    if (video->frame() == 0) {
+      // Only call Control if quantizer > 0 to verify that using quantizer
+      // alone will activate lossless
+      if (cfg_.rc_max_quantizer > 0 || cfg_.rc_min_quantizer > 0) {
+        encoder->Control(AV1E_SET_LOSSLESS, 1);
+      }
+    }
+  }
+
+  virtual void BeginPassHook(unsigned int /*pass*/) {
+    psnr_ = kMaxPsnr;
+    nframes_ = 0;
+  }
+
+  virtual void PSNRPktHook(const aom_codec_cx_pkt_t *pkt) {
+    if (pkt->data.psnr.psnr[0] < psnr_) psnr_ = pkt->data.psnr.psnr[0];
+  }
+
+  double GetMinPsnr() const { return psnr_; }
+
+ private:
+  double psnr_;
+  unsigned int nframes_;
+  libaom_test::TestMode encoding_mode_;
+};
+
+TEST_P(LosslessTestLarge, TestLossLessEncoding) {
+  const aom_rational timebase = { 33333333, 1000000000 };
+  cfg_.g_timebase = timebase;
+  cfg_.rc_target_bitrate = 2000;
+  cfg_.g_lag_in_frames = 25;
+  cfg_.rc_min_quantizer = 0;
+  cfg_.rc_max_quantizer = 0;
+
+  init_flags_ = AOM_CODEC_USE_PSNR;
+
+  // intentionally changed the dimension for better testing coverage
+  libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
+                                     timebase.den, timebase.num, 0, 5);
+  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
+  const double psnr_lossless = GetMinPsnr();
+  EXPECT_GE(psnr_lossless, kMaxPsnr);
+}
+
+TEST_P(LosslessTestLarge, TestLossLessEncoding444) {
+  libaom_test::Y4mVideoSource video("rush_hour_444.y4m", 0, 5);
+
+  cfg_.g_profile = 1;
+  cfg_.g_timebase = video.timebase();
+  cfg_.rc_target_bitrate = 2000;
+  cfg_.g_lag_in_frames = 25;
+  cfg_.rc_min_quantizer = 0;
+  cfg_.rc_max_quantizer = 0;
+
+  init_flags_ = AOM_CODEC_USE_PSNR;
+
+  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
+  const double psnr_lossless = GetMinPsnr();
+  EXPECT_GE(psnr_lossless, kMaxPsnr);
+}
+
+TEST_P(LosslessTestLarge, TestLossLessEncodingCtrl) {
+  const aom_rational timebase = { 33333333, 1000000000 };
+  cfg_.g_timebase = timebase;
+  cfg_.rc_target_bitrate = 2000;
+  cfg_.g_lag_in_frames = 25;
+  // Intentionally set Q > 0, to make sure control can be used to activate
+  // lossless
+  cfg_.rc_min_quantizer = 10;
+  cfg_.rc_max_quantizer = 20;
+
+  init_flags_ = AOM_CODEC_USE_PSNR;
+
+  libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
+                                     timebase.den, timebase.num, 0, 5);
+  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
+  const double psnr_lossless = GetMinPsnr();
+  EXPECT_GE(psnr_lossless, kMaxPsnr);
+}
+
+AV1_INSTANTIATE_TEST_CASE(LosslessTestLarge,
+                          ::testing::Values(::libaom_test::kOnePassGood,
+                                            ::libaom_test::kTwoPassGood));
+}  // namespace