libvpx/test/fdct4x4_test.cc - platform/external/libvpx - Git at Google

 /*
  *  Copyright (c) 2012 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 <math.h>
 #include <stdlib.h>
 #include <string.h>

 #include "third_party/googletest/src/include/gtest/gtest.h"
 #include "test/acm_random.h"
 #include "test/clear_system_state.h"
 #include "test/register_state_check.h"
 #include "test/util.h"

 extern "C" {
 #include "vp9/common/vp9_entropy.h"
 #include "./vp9_rtcd.h"
 void vp9_idct4x4_16_add_c(const int16_t *input, uint8_t *output, int pitch);
 }
 #include "vpx/vpx_integer.h"

 using libvpx_test::ACMRandom;

 namespace {
 const int kNumCoeffs = 16;
 typedef void (*fdct_t)(const int16_t *in, int16_t *out, int stride);
 typedef void (*idct_t)(const int16_t *in, uint8_t *out, int stride);
 typedef void (*fht_t) (const int16_t *in, int16_t *out, int stride,
                        int tx_type);
 typedef void (*iht_t) (const int16_t *in, uint8_t *out, int stride,
                        int tx_type);

 void fdct4x4_ref(const int16_t *in, int16_t *out, int stride, int tx_type) {
   vp9_fdct4x4_c(in, out, stride);
 }

 void fht4x4_ref(const int16_t *in, int16_t *out, int stride, int tx_type) {
   vp9_short_fht4x4_c(in, out, stride, tx_type);
 }

 class Trans4x4TestBase {
  public:
   virtual ~Trans4x4TestBase() {}

  protected:
   virtual void RunFwdTxfm(const int16_t *in, int16_t *out, int stride) = 0;

   virtual void RunInvTxfm(const int16_t *out, uint8_t *dst, int stride) = 0;

   void RunAccuracyCheck() {
     ACMRandom rnd(ACMRandom::DeterministicSeed());
     uint32_t max_error = 0;
     int64_t total_error = 0;
     const int count_test_block = 10000;
     for (int i = 0; i < count_test_block; ++i) {
       DECLARE_ALIGNED_ARRAY(16, int16_t, test_input_block, kNumCoeffs);
       DECLARE_ALIGNED_ARRAY(16, int16_t, test_temp_block, kNumCoeffs);
       DECLARE_ALIGNED_ARRAY(16, uint8_t, dst, kNumCoeffs);
       DECLARE_ALIGNED_ARRAY(16, uint8_t, src, kNumCoeffs);

       // Initialize a test block with input range [-255, 255].
       for (int j = 0; j < kNumCoeffs; ++j) {
         src[j] = rnd.Rand8();
         dst[j] = rnd.Rand8();
         test_input_block[j] = src[j] - dst[j];
       }

       REGISTER_STATE_CHECK(RunFwdTxfm(test_input_block,
                                       test_temp_block, pitch_));
       REGISTER_STATE_CHECK(RunInvTxfm(test_temp_block, dst, pitch_));

       for (int j = 0; j < kNumCoeffs; ++j) {
         const uint32_t diff = dst[j] - src[j];
         const uint32_t error = diff * diff;
         if (max_error < error)
           max_error = error;
         total_error += error;
       }
     }

     EXPECT_GE(1u, max_error)
         << "Error: 4x4 FHT/IHT has an individual round trip error > 1";

     EXPECT_GE(count_test_block , total_error)
         << "Error: 4x4 FHT/IHT has average round trip error > 1 per block";
   }

   void RunCoeffCheck() {
     ACMRandom rnd(ACMRandom::DeterministicSeed());
     const int count_test_block = 5000;
     DECLARE_ALIGNED_ARRAY(16, int16_t, input_block, kNumCoeffs);
     DECLARE_ALIGNED_ARRAY(16, int16_t, output_ref_block, kNumCoeffs);
     DECLARE_ALIGNED_ARRAY(16, int16_t, output_block, kNumCoeffs);

     for (int i = 0; i < count_test_block; ++i) {
       // Initialize a test block with input range [-255, 255].
       for (int j = 0; j < kNumCoeffs; ++j)
         input_block[j] = rnd.Rand8() - rnd.Rand8();

       fwd_txfm_ref(input_block, output_ref_block, pitch_, tx_type_);
       REGISTER_STATE_CHECK(RunFwdTxfm(input_block, output_block, pitch_));

       // The minimum quant value is 4.
       for (int j = 0; j < kNumCoeffs; ++j)
         EXPECT_EQ(output_block[j], output_ref_block[j]);
     }
   }

   void RunMemCheck() {
     ACMRandom rnd(ACMRandom::DeterministicSeed());
     const int count_test_block = 5000;
     DECLARE_ALIGNED_ARRAY(16, int16_t, input_block, kNumCoeffs);
     DECLARE_ALIGNED_ARRAY(16, int16_t, input_extreme_block, kNumCoeffs);
     DECLARE_ALIGNED_ARRAY(16, int16_t, output_ref_block, kNumCoeffs);
     DECLARE_ALIGNED_ARRAY(16, int16_t, output_block, kNumCoeffs);

     for (int i = 0; i < count_test_block; ++i) {
       // Initialize a test block with input range [-255, 255].
       for (int j = 0; j < kNumCoeffs; ++j) {
         input_block[j] = rnd.Rand8() - rnd.Rand8();
         input_extreme_block[j] = rnd.Rand8() % 2 ? 255 : -255;
       }
       if (i == 0)
         for (int j = 0; j < kNumCoeffs; ++j)
           input_extreme_block[j] = 255;
       if (i == 1)
         for (int j = 0; j < kNumCoeffs; ++j)
           input_extreme_block[j] = -255;

       fwd_txfm_ref(input_extreme_block, output_ref_block, pitch_, tx_type_);
       REGISTER_STATE_CHECK(RunFwdTxfm(input_extreme_block,
                                       output_block, pitch_));

       // The minimum quant value is 4.
       for (int j = 0; j < kNumCoeffs; ++j) {
         EXPECT_EQ(output_block[j], output_ref_block[j]);
         EXPECT_GE(4 * DCT_MAX_VALUE, abs(output_block[j]))
             << "Error: 16x16 FDCT has coefficient larger than 4*DCT_MAX_VALUE";
       }
     }
   }

   void RunInvAccuracyCheck() {
     ACMRandom rnd(ACMRandom::DeterministicSeed());
     const int count_test_block = 1000;
     DECLARE_ALIGNED_ARRAY(16, int16_t, in, kNumCoeffs);
     DECLARE_ALIGNED_ARRAY(16, int16_t, coeff, kNumCoeffs);
     DECLARE_ALIGNED_ARRAY(16, uint8_t, dst, kNumCoeffs);
     DECLARE_ALIGNED_ARRAY(16, uint8_t, src, kNumCoeffs);

     for (int i = 0; i < count_test_block; ++i) {
       // Initialize a test block with input range [-255, 255].
       for (int j = 0; j < kNumCoeffs; ++j) {
         src[j] = rnd.Rand8();
         dst[j] = rnd.Rand8();
         in[j] = src[j] - dst[j];
       }

       fwd_txfm_ref(in, coeff, pitch_, tx_type_);

       REGISTER_STATE_CHECK(RunInvTxfm(coeff, dst, pitch_));

       for (int j = 0; j < kNumCoeffs; ++j) {
         const uint32_t diff = dst[j] - src[j];
         const uint32_t error = diff * diff;
         EXPECT_GE(1u, error)
             << "Error: 16x16 IDCT has error " << error
             << " at index " << j;
       }
     }
   }

   int pitch_;
   int tx_type_;
   fht_t fwd_txfm_ref;
 };

 class Trans4x4DCT
     : public Trans4x4TestBase,
       public PARAMS(fdct_t, idct_t, int) {
  public:
   virtual ~Trans4x4DCT() {}

   virtual void SetUp() {
     fwd_txfm_ = GET_PARAM(0);
     inv_txfm_ = GET_PARAM(1);
     tx_type_  = GET_PARAM(2);
     pitch_    = 4;
     fwd_txfm_ref = fdct4x4_ref;
   }
   virtual void TearDown() { libvpx_test::ClearSystemState(); }

  protected:
   void RunFwdTxfm(const int16_t *in, int16_t *out, int stride) {
     fwd_txfm_(in, out, stride);
   }
   void RunInvTxfm(const int16_t *out, uint8_t *dst, int stride) {
     inv_txfm_(out, dst, stride);
   }

   fdct_t fwd_txfm_;
   idct_t inv_txfm_;
 };

 TEST_P(Trans4x4DCT, AccuracyCheck) {
   RunAccuracyCheck();
 }

 TEST_P(Trans4x4DCT, CoeffCheck) {
   RunCoeffCheck();
 }

 TEST_P(Trans4x4DCT, MemCheck) {
   RunMemCheck();
 }

 TEST_P(Trans4x4DCT, InvAccuracyCheck) {
   RunInvAccuracyCheck();
 }

 class Trans4x4HT
     : public Trans4x4TestBase,
       public PARAMS(fht_t, iht_t, int) {
  public:
   virtual ~Trans4x4HT() {}

   virtual void SetUp() {
     fwd_txfm_ = GET_PARAM(0);
     inv_txfm_ = GET_PARAM(1);
     tx_type_  = GET_PARAM(2);
     pitch_    = 4;
     fwd_txfm_ref = fht4x4_ref;
   }
   virtual void TearDown() { libvpx_test::ClearSystemState(); }

  protected:
   void RunFwdTxfm(const int16_t *in, int16_t *out, int stride) {
     fwd_txfm_(in, out, stride, tx_type_);
   }

   void RunInvTxfm(const int16_t *out, uint8_t *dst, int stride) {
     inv_txfm_(out, dst, stride, tx_type_);
   }

   fht_t fwd_txfm_;
   iht_t inv_txfm_;
 };

 TEST_P(Trans4x4HT, AccuracyCheck) {
   RunAccuracyCheck();
 }

 TEST_P(Trans4x4HT, CoeffCheck) {
   RunCoeffCheck();
 }

 TEST_P(Trans4x4HT, MemCheck) {
   RunMemCheck();
 }

 TEST_P(Trans4x4HT, InvAccuracyCheck) {
   RunInvAccuracyCheck();
 }

 using std::tr1::make_tuple;

 INSTANTIATE_TEST_CASE_P(
     C, Trans4x4DCT,
     ::testing::Values(
         make_tuple(&vp9_fdct4x4_c, &vp9_idct4x4_16_add_c, 0)));
 INSTANTIATE_TEST_CASE_P(
     C, Trans4x4HT,
     ::testing::Values(
         make_tuple(&vp9_short_fht4x4_c, &vp9_iht4x4_16_add_c, 0),
         make_tuple(&vp9_short_fht4x4_c, &vp9_iht4x4_16_add_c, 1),
         make_tuple(&vp9_short_fht4x4_c, &vp9_iht4x4_16_add_c, 2),
         make_tuple(&vp9_short_fht4x4_c, &vp9_iht4x4_16_add_c, 3)));

 #if HAVE_SSE2
 INSTANTIATE_TEST_CASE_P(
     SSE2, Trans4x4DCT,
     ::testing::Values(
         make_tuple(&vp9_fdct4x4_sse2,
                    &vp9_idct4x4_16_add_sse2, 0)));
 INSTANTIATE_TEST_CASE_P(
     SSE2, Trans4x4HT,
     ::testing::Values(
         make_tuple(&vp9_short_fht4x4_sse2, &vp9_iht4x4_16_add_sse2, 0),
         make_tuple(&vp9_short_fht4x4_sse2, &vp9_iht4x4_16_add_sse2, 1),
         make_tuple(&vp9_short_fht4x4_sse2, &vp9_iht4x4_16_add_sse2, 2),
         make_tuple(&vp9_short_fht4x4_sse2, &vp9_iht4x4_16_add_sse2, 3)));
 #endif

 }  // namespace
	/*
	* Copyright (c) 2012 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 <math.h>
	#include <stdlib.h>
	#include <string.h>

	#include "third_party/googletest/src/include/gtest/gtest.h"
	#include "test/acm_random.h"
	#include "test/clear_system_state.h"
	#include "test/register_state_check.h"
	#include "test/util.h"

	extern "C" {
	#include "vp9/common/vp9_entropy.h"
	#include "./vp9_rtcd.h"
	void vp9_idct4x4_16_add_c(const int16_t input, uint8_t output, int pitch);
	}
	#include "vpx/vpx_integer.h"

	using libvpx_test::ACMRandom;

	namespace {
	const int kNumCoeffs = 16;
	typedef void (fdct_t)(const int16_t in, int16_t *out, int stride);
	typedef void (idct_t)(const int16_t in, uint8_t *out, int stride);
	typedef void (fht_t) (const int16_t in, int16_t *out, int stride,
	int tx_type);
	typedef void (iht_t) (const int16_t in, uint8_t *out, int stride,
	int tx_type);

	void fdct4x4_ref(const int16_t in, int16_t out, int stride, int tx_type) {
	vp9_fdct4x4_c(in, out, stride);
	}

	void fht4x4_ref(const int16_t in, int16_t out, int stride, int tx_type) {
	vp9_short_fht4x4_c(in, out, stride, tx_type);
	}

	class Trans4x4TestBase {
	public:
	virtual ~Trans4x4TestBase() {}

	protected:
	virtual void RunFwdTxfm(const int16_t in, int16_t out, int stride) = 0;

	virtual void RunInvTxfm(const int16_t out, uint8_t dst, int stride) = 0;

	void RunAccuracyCheck() {
	ACMRandom rnd(ACMRandom::DeterministicSeed());
	uint32_t max_error = 0;
	int64_t total_error = 0;
	const int count_test_block = 10000;
	for (int i = 0; i < count_test_block; ++i) {
	DECLARE_ALIGNED_ARRAY(16, int16_t, test_input_block, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, int16_t, test_temp_block, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, uint8_t, dst, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, uint8_t, src, kNumCoeffs);

	// Initialize a test block with input range [-255, 255].
	for (int j = 0; j < kNumCoeffs; ++j) {
	src[j] = rnd.Rand8();
	dst[j] = rnd.Rand8();
	test_input_block[j] = src[j] - dst[j];
	}

	REGISTER_STATE_CHECK(RunFwdTxfm(test_input_block,
	test_temp_block, pitch_));
	REGISTER_STATE_CHECK(RunInvTxfm(test_temp_block, dst, pitch_));

	for (int j = 0; j < kNumCoeffs; ++j) {
	const uint32_t diff = dst[j] - src[j];
	const uint32_t error = diff * diff;
	if (max_error < error)
	max_error = error;
	total_error += error;
	}
	}

	EXPECT_GE(1u, max_error)
	<< "Error: 4x4 FHT/IHT has an individual round trip error > 1";

	EXPECT_GE(count_test_block , total_error)
	<< "Error: 4x4 FHT/IHT has average round trip error > 1 per block";
	}

	void RunCoeffCheck() {
	ACMRandom rnd(ACMRandom::DeterministicSeed());
	const int count_test_block = 5000;
	DECLARE_ALIGNED_ARRAY(16, int16_t, input_block, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, int16_t, output_ref_block, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, int16_t, output_block, kNumCoeffs);

	for (int i = 0; i < count_test_block; ++i) {
	// Initialize a test block with input range [-255, 255].
	for (int j = 0; j < kNumCoeffs; ++j)
	input_block[j] = rnd.Rand8() - rnd.Rand8();

	fwd_txfm_ref(input_block, output_ref_block, pitch_, tx_type_);
	REGISTER_STATE_CHECK(RunFwdTxfm(input_block, output_block, pitch_));

	// The minimum quant value is 4.
	for (int j = 0; j < kNumCoeffs; ++j)
	EXPECT_EQ(output_block[j], output_ref_block[j]);
	}
	}

	void RunMemCheck() {
	ACMRandom rnd(ACMRandom::DeterministicSeed());
	const int count_test_block = 5000;
	DECLARE_ALIGNED_ARRAY(16, int16_t, input_block, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, int16_t, input_extreme_block, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, int16_t, output_ref_block, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, int16_t, output_block, kNumCoeffs);

	for (int i = 0; i < count_test_block; ++i) {
	// Initialize a test block with input range [-255, 255].
	for (int j = 0; j < kNumCoeffs; ++j) {
	input_block[j] = rnd.Rand8() - rnd.Rand8();
	input_extreme_block[j] = rnd.Rand8() % 2 ? 255 : -255;
	}
	if (i == 0)
	for (int j = 0; j < kNumCoeffs; ++j)
	input_extreme_block[j] = 255;
	if (i == 1)
	for (int j = 0; j < kNumCoeffs; ++j)
	input_extreme_block[j] = -255;

	fwd_txfm_ref(input_extreme_block, output_ref_block, pitch_, tx_type_);
	REGISTER_STATE_CHECK(RunFwdTxfm(input_extreme_block,
	output_block, pitch_));

	// The minimum quant value is 4.
	for (int j = 0; j < kNumCoeffs; ++j) {
	EXPECT_EQ(output_block[j], output_ref_block[j]);
	EXPECT_GE(4 * DCT_MAX_VALUE, abs(output_block[j]))
	<< "Error: 16x16 FDCT has coefficient larger than 4*DCT_MAX_VALUE";
	}
	}
	}

	void RunInvAccuracyCheck() {
	ACMRandom rnd(ACMRandom::DeterministicSeed());
	const int count_test_block = 1000;
	DECLARE_ALIGNED_ARRAY(16, int16_t, in, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, int16_t, coeff, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, uint8_t, dst, kNumCoeffs);
	DECLARE_ALIGNED_ARRAY(16, uint8_t, src, kNumCoeffs);

	for (int i = 0; i < count_test_block; ++i) {
	// Initialize a test block with input range [-255, 255].
	for (int j = 0; j < kNumCoeffs; ++j) {
	src[j] = rnd.Rand8();
	dst[j] = rnd.Rand8();
	in[j] = src[j] - dst[j];
	}

	fwd_txfm_ref(in, coeff, pitch_, tx_type_);

	REGISTER_STATE_CHECK(RunInvTxfm(coeff, dst, pitch_));

	for (int j = 0; j < kNumCoeffs; ++j) {
	const uint32_t diff = dst[j] - src[j];
	const uint32_t error = diff * diff;
	EXPECT_GE(1u, error)
	<< "Error: 16x16 IDCT has error " << error
	<< " at index " << j;
	}
	}
	}

	int pitch_;
	int tx_type_;
	fht_t fwd_txfm_ref;
	};

	class Trans4x4DCT
	: public Trans4x4TestBase,
	public PARAMS(fdct_t, idct_t, int) {
	public:
	virtual ~Trans4x4DCT() {}

	virtual void SetUp() {
	fwd_txfm_ = GET_PARAM(0);
	inv_txfm_ = GET_PARAM(1);
	tx_type_ = GET_PARAM(2);
	pitch_ = 4;
	fwd_txfm_ref = fdct4x4_ref;
	}
	virtual void TearDown() { libvpx_test::ClearSystemState(); }

	protected:
	void RunFwdTxfm(const int16_t in, int16_t out, int stride) {
	fwd_txfm_(in, out, stride);
	}
	void RunInvTxfm(const int16_t out, uint8_t dst, int stride) {
	inv_txfm_(out, dst, stride);
	}

	fdct_t fwd_txfm_;
	idct_t inv_txfm_;
	};

	TEST_P(Trans4x4DCT, AccuracyCheck) {
	RunAccuracyCheck();
	}

	TEST_P(Trans4x4DCT, CoeffCheck) {
	RunCoeffCheck();
	}

	TEST_P(Trans4x4DCT, MemCheck) {
	RunMemCheck();
	}

	TEST_P(Trans4x4DCT, InvAccuracyCheck) {
	RunInvAccuracyCheck();
	}

	class Trans4x4HT
	: public Trans4x4TestBase,
	public PARAMS(fht_t, iht_t, int) {
	public:
	virtual ~Trans4x4HT() {}

	virtual void SetUp() {
	fwd_txfm_ = GET_PARAM(0);
	inv_txfm_ = GET_PARAM(1);
	tx_type_ = GET_PARAM(2);
	pitch_ = 4;
	fwd_txfm_ref = fht4x4_ref;
	}
	virtual void TearDown() { libvpx_test::ClearSystemState(); }

	protected:
	void RunFwdTxfm(const int16_t in, int16_t out, int stride) {
	fwd_txfm_(in, out, stride, tx_type_);
	}

	void RunInvTxfm(const int16_t out, uint8_t dst, int stride) {
	inv_txfm_(out, dst, stride, tx_type_);
	}

	fht_t fwd_txfm_;
	iht_t inv_txfm_;
	};

	TEST_P(Trans4x4HT, AccuracyCheck) {
	RunAccuracyCheck();
	}

	TEST_P(Trans4x4HT, CoeffCheck) {
	RunCoeffCheck();
	}

	TEST_P(Trans4x4HT, MemCheck) {
	RunMemCheck();
	}

	TEST_P(Trans4x4HT, InvAccuracyCheck) {
	RunInvAccuracyCheck();
	}

	using std::tr1::make_tuple;

	INSTANTIATE_TEST_CASE_P(
	C, Trans4x4DCT,
	::testing::Values(
	make_tuple(&vp9_fdct4x4_c, &vp9_idct4x4_16_add_c, 0)));
	INSTANTIATE_TEST_CASE_P(
	C, Trans4x4HT,
	::testing::Values(
	make_tuple(&vp9_short_fht4x4_c, &vp9_iht4x4_16_add_c, 0),
	make_tuple(&vp9_short_fht4x4_c, &vp9_iht4x4_16_add_c, 1),
	make_tuple(&vp9_short_fht4x4_c, &vp9_iht4x4_16_add_c, 2),
	make_tuple(&vp9_short_fht4x4_c, &vp9_iht4x4_16_add_c, 3)));

	#if HAVE_SSE2
	INSTANTIATE_TEST_CASE_P(
	SSE2, Trans4x4DCT,
	::testing::Values(
	make_tuple(&vp9_fdct4x4_sse2,
	&vp9_idct4x4_16_add_sse2, 0)));
	INSTANTIATE_TEST_CASE_P(
	SSE2, Trans4x4HT,
	::testing::Values(
	make_tuple(&vp9_short_fht4x4_sse2, &vp9_iht4x4_16_add_sse2, 0),
	make_tuple(&vp9_short_fht4x4_sse2, &vp9_iht4x4_16_add_sse2, 1),
	make_tuple(&vp9_short_fht4x4_sse2, &vp9_iht4x4_16_add_sse2, 2),
	make_tuple(&vp9_short_fht4x4_sse2, &vp9_iht4x4_16_add_sse2, 3)));
	#endif

	} // namespace