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/*
* Copyright (c) 2013 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 "webrtc/test/frame_generator_capturer.h"
#include "webrtc/base/criticalsection.h"
#include "webrtc/test/frame_generator.h"
#include "webrtc/system_wrappers/include/clock.h"
#include "webrtc/system_wrappers/include/event_wrapper.h"
#include "webrtc/system_wrappers/include/sleep.h"
#include "webrtc/system_wrappers/include/thread_wrapper.h"
#include "webrtc/video_send_stream.h"
namespace webrtc {
namespace test {
FrameGeneratorCapturer* FrameGeneratorCapturer::Create(VideoCaptureInput* input,
size_t width,
size_t height,
int target_fps,
Clock* clock) {
FrameGeneratorCapturer* capturer = new FrameGeneratorCapturer(
clock, input, FrameGenerator::CreateChromaGenerator(width, height),
target_fps);
if (!capturer->Init()) {
delete capturer;
return NULL;
}
return capturer;
}
FrameGeneratorCapturer* FrameGeneratorCapturer::CreateFromYuvFile(
VideoCaptureInput* input,
const std::string& file_name,
size_t width,
size_t height,
int target_fps,
Clock* clock) {
FrameGeneratorCapturer* capturer = new FrameGeneratorCapturer(
clock, input,
FrameGenerator::CreateFromYuvFile(std::vector<std::string>(1, file_name),
width, height, 1),
target_fps);
if (!capturer->Init()) {
delete capturer;
return NULL;
}
return capturer;
}
FrameGeneratorCapturer::FrameGeneratorCapturer(Clock* clock,
VideoCaptureInput* input,
FrameGenerator* frame_generator,
int target_fps)
: VideoCapturer(input),
clock_(clock),
sending_(false),
tick_(EventTimerWrapper::Create()),
frame_generator_(frame_generator),
target_fps_(target_fps),
first_frame_capture_time_(-1) {
assert(input != NULL);
assert(frame_generator != NULL);
assert(target_fps > 0);
}
FrameGeneratorCapturer::~FrameGeneratorCapturer() {
Stop();
if (thread_.get() != NULL)
thread_->Stop();
}
bool FrameGeneratorCapturer::Init() {
// This check is added because frame_generator_ might be file based and should
// not crash because a file moved.
if (frame_generator_.get() == NULL)
return false;
if (!tick_->StartTimer(true, 1000 / target_fps_))
return false;
thread_ = ThreadWrapper::CreateThread(FrameGeneratorCapturer::Run, this,
"FrameGeneratorCapturer");
if (thread_.get() == NULL)
return false;
if (!thread_->Start()) {
thread_.reset();
return false;
}
thread_->SetPriority(webrtc::kHighPriority);
return true;
}
bool FrameGeneratorCapturer::Run(void* obj) {
static_cast<FrameGeneratorCapturer*>(obj)->InsertFrame();
return true;
}
void FrameGeneratorCapturer::InsertFrame() {
{
rtc::CritScope cs(&lock_);
if (sending_) {
VideoFrame* frame = frame_generator_->NextFrame();
frame->set_ntp_time_ms(clock_->CurrentNtpInMilliseconds());
if (first_frame_capture_time_ == -1) {
first_frame_capture_time_ = frame->ntp_time_ms();
}
input_->IncomingCapturedFrame(*frame);
}
}
tick_->Wait(WEBRTC_EVENT_INFINITE);
}
void FrameGeneratorCapturer::Start() {
rtc::CritScope cs(&lock_);
sending_ = true;
}
void FrameGeneratorCapturer::Stop() {
rtc::CritScope cs(&lock_);
sending_ = false;
}
void FrameGeneratorCapturer::ForceFrame() {
tick_->Set();
}
} // test
} // webrtc
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