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1 /* | |
2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #include <stdio.h> | |
12 | |
13 | |
14 #include "webrtc/common_types.h" | |
15 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h" | |
16 #include "webrtc/rtc_base/checks.h" | |
17 #include "webrtc/test/testsupport/frame_writer.h" | |
18 | |
19 extern "C" { | |
20 #if defined(USE_SYSTEM_LIBJPEG) | |
21 #include <jpeglib.h> | |
22 #elif defined(USE_LIBJPEG_TURBO) | |
23 #include "third_party/libjpeg_turbo/jpeglib.h" | |
24 #else | |
25 #include "third_party/libjpeg/jpeglib.h" | |
26 #endif | |
27 } | |
28 | |
29 namespace webrtc { | |
30 namespace test { | |
31 | |
32 JpegFrameWriter::JpegFrameWriter(std::string output_filename) | |
33 : frame_written_(false), | |
34 output_filename_(output_filename), | |
35 output_file_(nullptr) {} | |
36 | |
37 bool JpegFrameWriter::WriteFrame(const VideoFrame& input_frame, int quality) { | |
38 RTC_CHECK(!frame_written_) << "Only single frame can be saved to Jpeg."; | |
pbos-webrtc
2017/07/26 18:48:03
a single
ilnik
2017/08/17 11:35:07
Done.
| |
39 const int kColorPlanes = 3; // R, G and B. | |
40 size_t rgb_len = input_frame.height() * input_frame.width() * kColorPlanes; | |
41 std::unique_ptr<uint8_t> rgb_buf(new uint8_t[rgb_len]); | |
42 if (rgb_buf == nullptr) { | |
43 fprintf(stderr, "Could not allocate memory for RGB image.\n"); | |
pbos-webrtc
2017/07/26 18:48:03
This can't happen, per C++ new never fails (it thr
ilnik
2017/08/17 11:35:07
Done.
| |
44 return false; | |
45 } | |
46 | |
47 // kRGB24 actually corresponds to FourCC 24BG which is 24-bit BGR. | |
48 if (ConvertFromI420(input_frame, VideoType::kRGB24, 0, rgb_buf.get()) < 0) { | |
49 fprintf(stderr, "Could not convert input frame to RGB.\n"); | |
50 return false; | |
51 } | |
52 output_file_ = fopen(output_filename_.c_str(), "wb"); | |
53 if (!output_file_) { | |
54 fprintf(stderr, "Couldn't open file to write jpeg frame to: %s\n", | |
55 output_filename_.c_str()); | |
56 return false; | |
57 } | |
58 | |
59 // Invoking LIBJPEG | |
60 struct jpeg_compress_struct cinfo; | |
61 struct jpeg_error_mgr jerr; | |
62 JSAMPROW row_pointer[1]; | |
63 int row_stride; | |
64 cinfo.err = jpeg_std_error(&jerr); | |
65 jpeg_create_compress(&cinfo); | |
66 | |
67 jpeg_stdio_dest(&cinfo, output_file_); | |
68 | |
69 cinfo.image_width = input_frame.width(); | |
70 cinfo.image_height = input_frame.height(); | |
71 cinfo.input_components = kColorPlanes; | |
72 cinfo.in_color_space = JCS_EXT_BGR; | |
73 jpeg_set_defaults(&cinfo); | |
74 jpeg_set_quality(&cinfo, quality, TRUE); | |
75 | |
76 jpeg_start_compress(&cinfo, TRUE); | |
77 row_stride = input_frame.width() * kColorPlanes; | |
pbos-webrtc
2017/07/26 18:48:03
int row_stride =
ilnik
2017/08/17 11:35:07
Done.
| |
78 while (cinfo.next_scanline < cinfo.image_height) { | |
79 row_pointer[0] = &rgb_buf.get()[cinfo.next_scanline * row_stride]; | |
80 (void)jpeg_write_scanlines(&cinfo, row_pointer, 1); | |
81 } | |
82 | |
83 jpeg_finish_compress(&cinfo); | |
84 jpeg_destroy_compress(&cinfo); | |
85 fclose(output_file_); | |
86 | |
87 frame_written_ = true; | |
88 return true; | |
89 } | |
90 | |
91 } // namespace test | |
92 } // namespace webrtc | |
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