1 /*
2 * Copyright (c) 2018 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 "media/base/fake_frame_source.h"
12
13 #include "api/scoped_refptr.h"
14 #include "api/video/i420_buffer.h"
15 #include "api/video/video_frame_buffer.h"
16 #include "rtc_base/checks.h"
17 #include "rtc_base/time_utils.h"
18
19 namespace cricket {
20
FakeFrameSource(int width,int height,int interval_us,int64_t timestamp_offset_us)21 FakeFrameSource::FakeFrameSource(int width,
22 int height,
23 int interval_us,
24 int64_t timestamp_offset_us)
25 : width_(width),
26 height_(height),
27 interval_us_(interval_us),
28 next_timestamp_us_(timestamp_offset_us) {
29 RTC_CHECK_GT(width_, 0);
30 RTC_CHECK_GT(height_, 0);
31 RTC_CHECK_GT(interval_us_, 0);
32 RTC_CHECK_GE(next_timestamp_us_, 0);
33 }
34
FakeFrameSource(int width,int height,int interval_us)35 FakeFrameSource::FakeFrameSource(int width, int height, int interval_us)
36 : FakeFrameSource(width, height, interval_us, rtc::TimeMicros()) {}
37
GetRotation() const38 webrtc::VideoRotation FakeFrameSource::GetRotation() const {
39 return rotation_;
40 }
41
SetRotation(webrtc::VideoRotation rotation)42 void FakeFrameSource::SetRotation(webrtc::VideoRotation rotation) {
43 rotation_ = rotation;
44 }
45
GetFrameRotationApplied()46 webrtc::VideoFrame FakeFrameSource::GetFrameRotationApplied() {
47 switch (rotation_) {
48 case webrtc::kVideoRotation_0:
49 case webrtc::kVideoRotation_180:
50 return GetFrame(width_, height_, webrtc::kVideoRotation_0, interval_us_);
51 case webrtc::kVideoRotation_90:
52 case webrtc::kVideoRotation_270:
53 return GetFrame(height_, width_, webrtc::kVideoRotation_0, interval_us_);
54 }
55 RTC_DCHECK_NOTREACHED() << "Invalid rotation value: "
56 << static_cast<int>(rotation_);
57 // Without this return, the Windows Visual Studio compiler complains
58 // "not all control paths return a value".
59 return GetFrame();
60 }
61
GetFrame()62 webrtc::VideoFrame FakeFrameSource::GetFrame() {
63 return GetFrame(width_, height_, rotation_, interval_us_);
64 }
65
GetFrame(int width,int height,webrtc::VideoRotation rotation,int interval_us)66 webrtc::VideoFrame FakeFrameSource::GetFrame(int width,
67 int height,
68 webrtc::VideoRotation rotation,
69 int interval_us) {
70 RTC_CHECK_GT(width, 0);
71 RTC_CHECK_GT(height, 0);
72 RTC_CHECK_GT(interval_us, 0);
73
74 rtc::scoped_refptr<webrtc::I420Buffer> buffer(
75 webrtc::I420Buffer::Create(width, height));
76
77 buffer->InitializeData();
78 webrtc::VideoFrame frame = webrtc::VideoFrame::Builder()
79 .set_video_frame_buffer(buffer)
80 .set_rotation(rotation)
81 .set_timestamp_us(next_timestamp_us_)
82 .build();
83
84 next_timestamp_us_ += interval_us;
85 return frame;
86 }
87
88 } // namespace cricket
89