summaryrefslogtreecommitdiffstats
path: root/media/libaom/src/test/video_source.h
blob: 3c1c5e559ea56634f4f263c6342234b8ca3d3333 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
/*
 * 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.
 */
#ifndef AOM_TEST_VIDEO_SOURCE_H_
#define AOM_TEST_VIDEO_SOURCE_H_

#if defined(_WIN32)
#undef NOMINMAX
#define NOMINMAX
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#include <cstdio>
#include <cstdlib>
#include <string>
#include "test/acm_random.h"
#include "aom/aom_encoder.h"

namespace libaom_test {

// Helper macros to ensure LIBAOM_TEST_DATA_PATH is a quoted string.
// These are undefined right below GetDataPath
// NOTE: LIBAOM_TEST_DATA_PATH MUST NOT be a quoted string before
// Stringification or the GetDataPath will fail at runtime
#define TO_STRING(S) #S
#define STRINGIFY(S) TO_STRING(S)

// A simple function to encapsulate cross platform retrieval of test data path
static std::string GetDataPath() {
  const char *const data_path = getenv("LIBAOM_TEST_DATA_PATH");
  if (data_path == NULL) {
#ifdef LIBAOM_TEST_DATA_PATH
    // In some environments, we cannot set environment variables
    // Instead, we set the data path by using a preprocessor symbol
    // which can be set from make files
    return STRINGIFY(LIBAOM_TEST_DATA_PATH);
#else
    return ".";
#endif
  }
  return data_path;
}

// Undefining stringification macros because they are not used elsewhere
#undef TO_STRING
#undef STRINGIFY

inline FILE *OpenTestDataFile(const std::string &file_name) {
  const std::string path_to_source = GetDataPath() + "/" + file_name;
  return fopen(path_to_source.c_str(), "rb");
}

static FILE *GetTempOutFile(std::string *file_name) {
  file_name->clear();
#if defined(_WIN32)
  char fname[MAX_PATH];
  char tmppath[MAX_PATH];
  if (GetTempPathA(MAX_PATH, tmppath)) {
    // Assume for now that the filename generated is unique per process
    if (GetTempFileNameA(tmppath, "lvx", 0, fname)) {
      file_name->assign(fname);
      return fopen(fname, "wb+");
    }
  }
  return NULL;
#else
  char name_template[] = "/tmp/libaomtest.XXXXXX";
  const int fd = mkstemp(name_template);
  *file_name = name_template;
  return fdopen(fd, "wb+");
#endif
}

class TempOutFile {
 public:
  TempOutFile() { file_ = GetTempOutFile(&file_name_); }
  ~TempOutFile() {
    CloseFile();
    if (!file_name_.empty()) {
      EXPECT_EQ(0, remove(file_name_.c_str()));
    }
  }
  FILE *file() { return file_; }
  const std::string &file_name() { return file_name_; }

 protected:
  void CloseFile() {
    if (file_) {
      fclose(file_);
      file_ = NULL;
    }
  }
  FILE *file_;
  std::string file_name_;
};

// Abstract base class for test video sources, which provide a stream of
// aom_image_t images with associated timestamps and duration.
class VideoSource {
 public:
  virtual ~VideoSource() {}

  // Prepare the stream for reading, rewind/open as necessary.
  virtual void Begin() = 0;

  // Advance the cursor to the next frame
  virtual void Next() = 0;

  // Get the current video frame, or NULL on End-Of-Stream.
  virtual aom_image_t *img() const = 0;

  // Get the presentation timestamp of the current frame.
  virtual aom_codec_pts_t pts() const = 0;

  // Get the current frame's duration
  virtual unsigned long duration() const = 0;

  // Get the timebase for the stream
  virtual aom_rational_t timebase() const = 0;

  // Get the current frame counter, starting at 0.
  virtual unsigned int frame() const = 0;

  // Get the current file limit.
  virtual unsigned int limit() const = 0;
};

class DummyVideoSource : public VideoSource {
 public:
  DummyVideoSource()
      : img_(NULL), limit_(100), width_(80), height_(64),
        format_(AOM_IMG_FMT_I420) {
    ReallocImage();
  }

  virtual ~DummyVideoSource() { aom_img_free(img_); }

  virtual void Begin() {
    frame_ = 0;
    FillFrame();
  }

  virtual void Next() {
    ++frame_;
    FillFrame();
  }

  virtual aom_image_t *img() const { return (frame_ < limit_) ? img_ : NULL; }

  // Models a stream where Timebase = 1/FPS, so pts == frame.
  virtual aom_codec_pts_t pts() const { return frame_; }

  virtual unsigned long duration() const { return 1; }

  virtual aom_rational_t timebase() const {
    const aom_rational_t t = { 1, 30 };
    return t;
  }

  virtual unsigned int frame() const { return frame_; }

  virtual unsigned int limit() const { return limit_; }

  void set_limit(unsigned int limit) { limit_ = limit; }

  void SetSize(unsigned int width, unsigned int height) {
    if (width != width_ || height != height_) {
      width_ = width;
      height_ = height;
      ReallocImage();
    }
  }

  void SetImageFormat(aom_img_fmt_t format) {
    if (format_ != format) {
      format_ = format;
      ReallocImage();
    }
  }

 protected:
  virtual void FillFrame() {
    if (img_) memset(img_->img_data, 0, raw_sz_);
  }

  void ReallocImage() {
    aom_img_free(img_);
    img_ = aom_img_alloc(NULL, format_, width_, height_, 32);
    raw_sz_ = ((img_->w + 31) & ~31) * img_->h * img_->bps / 8;
  }

  aom_image_t *img_;
  size_t raw_sz_;
  unsigned int limit_;
  unsigned int frame_;
  unsigned int width_;
  unsigned int height_;
  aom_img_fmt_t format_;
};

class RandomVideoSource : public DummyVideoSource {
 public:
  RandomVideoSource(int seed = ACMRandom::DeterministicSeed())
      : rnd_(seed), seed_(seed) {}

 protected:
  // Reset the RNG to get a matching stream for the second pass
  virtual void Begin() {
    frame_ = 0;
    rnd_.Reset(seed_);
    FillFrame();
  }

  // 15 frames of noise, followed by 15 static frames. Reset to 0 rather
  // than holding previous frames to encourage keyframes to be thrown.
  virtual void FillFrame() {
    if (img_) {
      if (frame_ % 30 < 15)
        for (size_t i = 0; i < raw_sz_; ++i) img_->img_data[i] = rnd_.Rand8();
      else
        memset(img_->img_data, 0, raw_sz_);
    }
  }

  ACMRandom rnd_;
  int seed_;
};

// Abstract base class for test video sources, which provide a stream of
// decompressed images to the decoder.
class CompressedVideoSource {
 public:
  virtual ~CompressedVideoSource() {}

  virtual void Init() = 0;

  // Prepare the stream for reading, rewind/open as necessary.
  virtual void Begin() = 0;

  // Advance the cursor to the next frame
  virtual void Next() = 0;

  virtual const uint8_t *cxdata() const = 0;

  virtual size_t frame_size() const = 0;

  virtual unsigned int frame_number() const = 0;
};

}  // namespace libaom_test

#endif  // AOM_TEST_VIDEO_SOURCE_H_