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
|
/*
* Copyright (c) 2012 The WebRTC 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 <stdio.h>
#include <stdlib.h>
#include <string>
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
#include "webrtc/typedefs.h"
using std::string;
namespace webrtc {
int EditFrames(const string& in_path, int width, int height,
int first_frame_to_process, int interval,
int last_frame_to_process, const string& out_path) {
if (last_frame_to_process < first_frame_to_process) {
fprintf(stderr, "The set of frames to cut is empty! (l < f)\n");
return -10;
}
FILE* in_fid = fopen(in_path.c_str() , "rb");
if (!in_fid) {
fprintf(stderr, "Could not read input file: %s.\n", in_path.c_str());
return -11;
}
// Frame size of I420.
size_t frame_length = CalcBufferSize(kI420, width, height);
rtc::scoped_ptr<uint8_t[]> temp_buffer(new uint8_t[frame_length]);
FILE* out_fid = fopen(out_path.c_str(), "wb");
if (!out_fid) {
fprintf(stderr, "Could not open output file: %s.\n", out_path.c_str());
fclose(in_fid);
return -12;
}
int num_frames_read = 0;
int num_frames_read_between = 0;
size_t num_bytes_read;
while ((num_bytes_read = fread(temp_buffer.get(), 1, frame_length, in_fid))
== frame_length) {
num_frames_read++;
if ((num_frames_read < first_frame_to_process) ||
(last_frame_to_process < num_frames_read)) {
fwrite(temp_buffer.get(), 1, frame_length, out_fid);
} else {
num_frames_read_between++;
if (interval <= 0) {
if (interval == -1) {
// Remove all frames.
} else {
if (((num_frames_read_between - 1) % interval) == 0) {
// Keep only every |interval| frame.
fwrite(temp_buffer.get(), 1, frame_length, out_fid);
}
}
} else if (interval > 0) {
for (int i = 1; i <= interval; ++i) {
fwrite(temp_buffer.get(), 1, frame_length, out_fid);
}
}
}
}
if (num_bytes_read > 0 && num_bytes_read < frame_length) {
printf("Frame to small! Last frame truncated.\n");
}
fclose(in_fid);
fclose(out_fid);
printf("Done editing!\n");
return 0;
}
} // namespace webrtc
|
