Add a unit test for AV1E_SET_ANS_WINDOW_SIZE_LOG2

Change-Id: I08fb1ea2f48f8db966c181bff6f30653e6ef247d

test/ans_codec_test.cc

@@ -0,0 +1,97 @@
+/*
+ * 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/include/gtest/gtest.h"
+
+#include "test/codec_factory.h"
+#include "test/encode_test_driver.h"
+#include "test/util.h"
+#include "test/y4m_video_source.h"
+#include "aom_dsp/ans.h"
+#include "av1/av1_dx_iface.c"
+
+// A note on ANS_MAX_SYMBOLS == 0:
+// Fused gtest doesn't work with EXPECT_FATAL_FAILURE [1]. Just run with a
+// single iteration and don't try to check the window size if we are unwindowed.
+// [1] https://github.com/google/googletest/issues/356
+
+namespace {
+
+const char kTestVideoName[] = "niklas_1280_720_30.y4m";
+const int kTestVideoFrames = 10;
+
+class AnsCodecTest : public ::libaom_test::EncoderTest,
+                     public ::libaom_test::CodecTestWithParam<int> {
+ protected:
+  AnsCodecTest()
+      : EncoderTest(GET_PARAM(0)), ans_window_size_log2_(GET_PARAM(1)) {}
+
+  virtual ~AnsCodecTest() {}
+
+  virtual void SetUp() {
+    InitializeConfig();
+    SetMode(::libaom_test::kOnePassGood);
+    cfg_.g_lag_in_frames = 25;
+    cfg_.rc_end_usage = AOM_CQ;
+  }
+
+  virtual void PreEncodeFrameHook(::libaom_test::VideoSource *video,
+                                  ::libaom_test::Encoder *encoder) {
+    if (video->frame() == 1) {
+#if ANS_MAX_SYMBOLS
+      encoder->Control(AV1E_SET_ANS_WINDOW_SIZE_LOG2, ans_window_size_log2_);
+#endif
+      // Try to push a high symbol count through the codec
+      encoder->Control(AOME_SET_CQ_LEVEL, 8);
+      encoder->Control(AOME_SET_CPUUSED, 2);
+      encoder->Control(AOME_SET_ENABLEAUTOALTREF, 1);
+      encoder->Control(AOME_SET_ARNR_MAXFRAMES, 7);
+      encoder->Control(AOME_SET_ARNR_STRENGTH, 5);
+      encoder->Control(AV1E_SET_TILE_COLUMNS, 0);
+      encoder->Control(AV1E_SET_TILE_ROWS, 0);
+    }
+  }
+
+  virtual bool HandleDecodeResult(const aom_codec_err_t res_dec,
+                                  libaom_test::Decoder *decoder) {
+    aom_codec_ctx_t *const av1_decoder = decoder->GetDecoder();
+#if ANS_MAX_SYMBOLS
+    aom_codec_alg_priv_t *const priv =
+        reinterpret_cast<aom_codec_alg_priv_t *>(av1_decoder->priv);
+    FrameWorkerData *const worker_data =
+        reinterpret_cast<FrameWorkerData *>(priv->frame_workers[0].data1);
+    AV1_COMMON *const common = &worker_data->pbi->common;
+
+    EXPECT_EQ(ans_window_size_log2_, common->ans_window_size_log2);
+#endif
+
+    EXPECT_EQ(AOM_CODEC_OK, res_dec) << decoder->DecodeError();
+    return AOM_CODEC_OK == res_dec;
+  }
+
+ private:
+  int ans_window_size_log2_;
+};
+
+TEST_P(AnsCodecTest, BitstreamParms) {
+  testing::internal::scoped_ptr<libaom_test::VideoSource> video(
+      new libaom_test::Y4mVideoSource(kTestVideoName, 0, kTestVideoFrames));
+  ASSERT_TRUE(video.get() != NULL);
+
+  ASSERT_NO_FATAL_FAILURE(RunLoop(video.get()));
+}
+
+#if ANS_MAX_SYMBOLS
+AV1_INSTANTIATE_TEST_CASE(AnsCodecTest, ::testing::Range(8, 24));
+#else
+AV1_INSTANTIATE_TEST_CASE(AnsCodecTest, ::testing::Range(0, 1));
+#endif
+}  // namespace

test/test.mk

@@ -106,6 +106,7 @@ LIBAOM_TEST_SRCS-yes                   += av1_ext_tile_test.cc
 endif
 ifeq ($(CONFIG_ANS),yes)
 LIBAOM_TEST_SRCS-yes                   += ans_test.cc
+LIBAOM_TEST_SRCS-yes                   += ans_codec_test.cc
 else
 LIBAOM_TEST_SRCS-yes                   += boolcoder_test.cc
 ifeq ($(CONFIG_ACCOUNTING),yes)