partial_idct_test.cc

/*
 *  Copyright (c) 2013 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"

#include "./vp9_rtcd.h"
#include "vp9/common/vp9_blockd.h"
#include "vp9/common/vp9_scan.h"
#include "vpx/vpx_integer.h"

using libvpx_test::ACMRandom;

namespace {
typedef void (*fwd_txfm_t)(const int16_t *in, int16_t *out, int stride);
typedef void (*inv_txfm_t)(const int16_t *in, uint8_t *out, int stride);
typedef std::tr1::tuple<inv_txfm_t,
                        inv_txfm_t,
                        TX_SIZE, int> partial_itxfm_param_t;
const int kMaxNumCoeffs = 1024;
class PartialIDctTest : public ::testing::TestWithParam<partial_itxfm_param_t> {
 public:
  virtual ~PartialIDctTest() {}
  virtual void SetUp() {
    full_itxfm_ = GET_PARAM(0);
    partial_itxfm_ = GET_PARAM(1);
    tx_size_  = GET_PARAM(2);
    last_nonzero_ = GET_PARAM(3);
  }

  virtual void TearDown() { libvpx_test::ClearSystemState(); }

 protected:
  int last_nonzero_;
  TX_SIZE tx_size_;
  inv_txfm_t full_itxfm_;
  inv_txfm_t partial_itxfm_;
};

TEST_P(PartialIDctTest, ResultsMatch) {
  ACMRandom rnd(ACMRandom::DeterministicSeed());
  int size;
  switch (tx_size_) {
    case TX_4X4:
      size = 4;
      break;
    case TX_8X8:
      size = 8;
      break;
    case TX_16X16:
      size = 16;
      break;
    case TX_32X32:
      size = 32;
      break;
    default: