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
|
/*
* 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_Y4M_VIDEO_SOURCE_H_
#define AOM_TEST_Y4M_VIDEO_SOURCE_H_
#include <algorithm>
#include <string>
#include "common/y4minput.h"
#include "test/video_source.h"
namespace libaom_test {
// This class extends VideoSource to allow parsing of raw yv12
// so that we can do actual file encodes.
class Y4mVideoSource : public VideoSource {
public:
Y4mVideoSource(const std::string &file_name, unsigned int start, int limit)
: file_name_(file_name), input_file_(NULL), img_(new aom_image_t()),
start_(start), limit_(limit), frame_(0), framerate_numerator_(0),
framerate_denominator_(0), y4m_() {}
virtual ~Y4mVideoSource() {
aom_img_free(img_.get());
CloseSource();
}
virtual void OpenSource() {
CloseSource();
input_file_ = OpenTestDataFile(file_name_);
ASSERT_TRUE(input_file_ != NULL)
<< "Input file open failed. Filename: " << file_name_;
}
virtual void ReadSourceToStart() {
ASSERT_TRUE(input_file_ != NULL);
ASSERT_FALSE(y4m_input_open(&y4m_, input_file_, NULL, 0, 0));
framerate_numerator_ = y4m_.fps_n;
framerate_denominator_ = y4m_.fps_d;
frame_ = 0;
for (unsigned int i = 0; i < start_; i++) {
Next();
}
FillFrame();
}
virtual void Begin() {
OpenSource();
ReadSourceToStart();
}
virtual void Next() {
++frame_;
FillFrame();
}
virtual aom_image_t *img() const {
return (frame_ < limit_) ? img_.get() : 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 = { framerate_denominator_, framerate_numerator_ };
return t;
}
virtual unsigned int frame() const { return frame_; }
virtual unsigned int limit() const { return limit_; }
virtual void FillFrame() {
ASSERT_TRUE(input_file_ != NULL);
// Read a frame from input_file.
y4m_input_fetch_frame(&y4m_, input_file_, img_.get());
}
// Swap buffers with another y4m source. This allows reading a new frame
// while keeping the old frame around. A whole Y4mSource is required and
// not just a aom_image_t because of how the y4m reader manipulates
// aom_image_t internals,
void SwapBuffers(Y4mVideoSource *other) {
std::swap(other->y4m_.dst_buf, y4m_.dst_buf);
aom_image_t *tmp;
tmp = other->img_.release();
other->img_.reset(img_.release());
img_.reset(tmp);
}
protected:
void CloseSource() {
y4m_input_close(&y4m_);
y4m_ = y4m_input();
if (input_file_ != NULL) {
fclose(input_file_);
input_file_ = NULL;
}
}
std::string file_name_;
FILE *input_file_;
testing::internal::scoped_ptr<aom_image_t> img_;
unsigned int start_;
unsigned int limit_;
unsigned int frame_;
int framerate_numerator_;
int framerate_denominator_;
y4m_input y4m_;
};
} // namespace libaom_test
#endif // AOM_TEST_Y4M_VIDEO_SOURCE_H_
|
