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/*
* libjingle
* Copyright 2004 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_MEDIA_BASE_FAKEVIDEOCAPTURER_H_
#define TALK_MEDIA_BASE_FAKEVIDEOCAPTURER_H_
#include <string.h>
#include <vector>
#include "talk/media/base/videocapturer.h"
#include "talk/media/base/videocommon.h"
#include "talk/media/base/videoframe.h"
#include "webrtc/base/timeutils.h"
#ifdef HAVE_WEBRTC_VIDEO
#include "talk/media/webrtc/webrtcvideoframefactory.h"
#endif
namespace cricket {
// Fake video capturer that allows the test to manually pump in frames.
class FakeVideoCapturer : public cricket::VideoCapturer {
public:
FakeVideoCapturer()
: running_(false),
initial_unix_timestamp_(time(NULL) * rtc::kNumNanosecsPerSec),
next_timestamp_(rtc::kNumNanosecsPerMillisec),
is_screencast_(false),
rotation_(webrtc::kVideoRotation_0) {
#ifdef HAVE_WEBRTC_VIDEO
set_frame_factory(new cricket::WebRtcVideoFrameFactory());
#endif
// Default supported formats. Use ResetSupportedFormats to over write.
std::vector<cricket::VideoFormat> formats;
formats.push_back(cricket::VideoFormat(1280, 720,
cricket::VideoFormat::FpsToInterval(30), cricket::FOURCC_I420));
formats.push_back(cricket::VideoFormat(640, 480,
cricket::VideoFormat::FpsToInterval(30), cricket::FOURCC_I420));
formats.push_back(cricket::VideoFormat(320, 240,
cricket::VideoFormat::FpsToInterval(30), cricket::FOURCC_I420));
formats.push_back(cricket::VideoFormat(160, 120,
cricket::VideoFormat::FpsToInterval(30), cricket::FOURCC_I420));
formats.push_back(cricket::VideoFormat(1280, 720,
cricket::VideoFormat::FpsToInterval(60), cricket::FOURCC_I420));
ResetSupportedFormats(formats);
}
~FakeVideoCapturer() {
SignalDestroyed(this);
}
void ResetSupportedFormats(const std::vector<cricket::VideoFormat>& formats) {
SetSupportedFormats(formats);
}
bool CaptureFrame() {
if (!GetCaptureFormat()) {
return false;
}
return CaptureCustomFrame(GetCaptureFormat()->width,
GetCaptureFormat()->height,
GetCaptureFormat()->interval,
GetCaptureFormat()->fourcc);
}
bool CaptureCustomFrame(int width, int height, uint32_t fourcc) {
// default to 30fps
return CaptureCustomFrame(width, height, 33333333, fourcc);
}
bool CaptureCustomFrame(int width,
int height,
int64_t timestamp_interval,
uint32_t fourcc) {
if (!running_) {
return false;
}
// Currently, |fourcc| is always I420 or ARGB.
// TODO(fbarchard): Extend SizeOf to take fourcc.
uint32_t size = 0u;
if (fourcc == cricket::FOURCC_ARGB) {
size = width * 4 * height;
} else if (fourcc == cricket::FOURCC_I420) {
size = static_cast<uint32_t>(cricket::VideoFrame::SizeOf(width, height));
} else {
return false; // Unsupported FOURCC.
}
if (size == 0u) {
return false; // Width and/or Height were zero.
}
cricket::CapturedFrame frame;
frame.width = width;
frame.height = height;
frame.fourcc = fourcc;
frame.data_size = size;
frame.time_stamp = initial_unix_timestamp_ + next_timestamp_;
next_timestamp_ += timestamp_interval;
rtc::scoped_ptr<char[]> data(new char[size]);
frame.data = data.get();
// Copy something non-zero into the buffer so Validate wont complain that
// the frame is all duplicate.
memset(frame.data, 1, size / 2);
memset(reinterpret_cast<uint8_t*>(frame.data) + (size / 2), 2,
size - (size / 2));
memcpy(frame.data, reinterpret_cast<const uint8_t*>(&fourcc), 4);
frame.rotation = rotation_;
// TODO(zhurunz): SignalFrameCaptured carry returned value to be able to
// capture results from downstream.
SignalFrameCaptured(this, &frame);
return true;
}
void SignalCapturedFrame(cricket::CapturedFrame* frame) {
SignalFrameCaptured(this, frame);
}
sigslot::signal1<FakeVideoCapturer*> SignalDestroyed;
virtual cricket::CaptureState Start(const cricket::VideoFormat& format) {
cricket::VideoFormat supported;
if (GetBestCaptureFormat(format, &supported)) {
SetCaptureFormat(&supported);
}
running_ = true;
SetCaptureState(cricket::CS_RUNNING);
return cricket::CS_RUNNING;
}
virtual void Stop() {
running_ = false;
SetCaptureFormat(NULL);
SetCaptureState(cricket::CS_STOPPED);
}
virtual bool IsRunning() { return running_; }
void SetScreencast(bool is_screencast) {
is_screencast_ = is_screencast;
}
virtual bool IsScreencast() const { return is_screencast_; }
bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) {
fourccs->push_back(cricket::FOURCC_I420);
fourccs->push_back(cricket::FOURCC_MJPG);
return true;
}
void SetRotation(webrtc::VideoRotation rotation) {
rotation_ = rotation;
}
webrtc::VideoRotation GetRotation() { return rotation_; }
private:
bool running_;
int64_t initial_unix_timestamp_;
int64_t next_timestamp_;
bool is_screencast_;
webrtc::VideoRotation rotation_;
};
} // namespace cricket
#endif // TALK_MEDIA_BASE_FAKEVIDEOCAPTURER_H_