| /* |
| * 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 "webrtc/video_engine/vie_capturer.h" |
| |
| #include "webrtc/common_video/interface/texture_video_frame.h" |
| #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h" |
| #include "webrtc/modules/interface/module_common_types.h" |
| #include "webrtc/modules/utility/interface/process_thread.h" |
| #include "webrtc/modules/video_capture/include/video_capture_factory.h" |
| #include "webrtc/modules/video_processing/main/interface/video_processing.h" |
| #include "webrtc/modules/video_render/include/video_render_defines.h" |
| #include "webrtc/system_wrappers/interface/clock.h" |
| #include "webrtc/system_wrappers/interface/critical_section_wrapper.h" |
| #include "webrtc/system_wrappers/interface/event_wrapper.h" |
| #include "webrtc/system_wrappers/interface/logging.h" |
| #include "webrtc/system_wrappers/interface/thread_wrapper.h" |
| #include "webrtc/system_wrappers/interface/trace_event.h" |
| #include "webrtc/video_engine/include/vie_image_process.h" |
| #include "webrtc/video_engine/overuse_frame_detector.h" |
| #include "webrtc/video_engine/vie_defines.h" |
| #include "webrtc/video_engine/vie_encoder.h" |
| |
| namespace webrtc { |
| |
| const int kThreadWaitTimeMs = 100; |
| |
| ViECapturer::ViECapturer(int capture_id, |
| int engine_id, |
| const Config& config, |
| ProcessThread& module_process_thread) |
| : ViEFrameProviderBase(capture_id, engine_id), |
| capture_cs_(CriticalSectionWrapper::CreateCriticalSection()), |
| deliver_cs_(CriticalSectionWrapper::CreateCriticalSection()), |
| capture_module_(NULL), |
| external_capture_module_(NULL), |
| module_process_thread_(module_process_thread), |
| capture_id_(capture_id), |
| incoming_frame_cs_(CriticalSectionWrapper::CreateCriticalSection()), |
| capture_thread_(*ThreadWrapper::CreateThread(ViECaptureThreadFunction, |
| this, kHighPriority, |
| "ViECaptureThread")), |
| capture_event_(*EventWrapper::Create()), |
| deliver_event_(*EventWrapper::Create()), |
| effect_filter_(NULL), |
| image_proc_module_(NULL), |
| image_proc_module_ref_counter_(0), |
| deflicker_frame_stats_(NULL), |
| brightness_frame_stats_(NULL), |
| current_brightness_level_(Normal), |
| reported_brightness_level_(Normal), |
| observer_cs_(CriticalSectionWrapper::CreateCriticalSection()), |
| observer_(NULL), |
| overuse_detector_(new OveruseFrameDetector(Clock::GetRealTimeClock())) { |
| unsigned int t_id = 0; |
| if (!capture_thread_.Start(t_id)) { |
| assert(false); |
| } |
| module_process_thread_.RegisterModule(overuse_detector_.get()); |
| } |
| |
| ViECapturer::~ViECapturer() { |
| module_process_thread_.DeRegisterModule(overuse_detector_.get()); |
| |
| // Stop the thread. |
| deliver_cs_->Enter(); |
| capture_cs_->Enter(); |
| capture_thread_.SetNotAlive(); |
| capture_event_.Set(); |
| capture_cs_->Leave(); |
| deliver_cs_->Leave(); |
| |
| // Stop the camera input. |
| if (capture_module_) { |
| module_process_thread_.DeRegisterModule(capture_module_); |
| capture_module_->DeRegisterCaptureDataCallback(); |
| capture_module_->Release(); |
| capture_module_ = NULL; |
| } |
| if (capture_thread_.Stop()) { |
| // Thread stopped. |
| delete &capture_thread_; |
| delete &capture_event_; |
| delete &deliver_event_; |
| } else { |
| assert(false); |
| } |
| |
| if (image_proc_module_) { |
| VideoProcessingModule::Destroy(image_proc_module_); |
| } |
| if (deflicker_frame_stats_) { |
| delete deflicker_frame_stats_; |
| deflicker_frame_stats_ = NULL; |
| } |
| delete brightness_frame_stats_; |
| } |
| |
| ViECapturer* ViECapturer::CreateViECapture( |
| int capture_id, |
| int engine_id, |
| const Config& config, |
| VideoCaptureModule* capture_module, |
| ProcessThread& module_process_thread) { |
| ViECapturer* capture = new ViECapturer(capture_id, engine_id, config, |
| module_process_thread); |
| if (!capture || capture->Init(capture_module) != 0) { |
| delete capture; |
| capture = NULL; |
| } |
| return capture; |
| } |
| |
| int32_t ViECapturer::Init(VideoCaptureModule* capture_module) { |
| assert(capture_module_ == NULL); |
| capture_module_ = capture_module; |
| capture_module_->RegisterCaptureDataCallback(*this); |
| capture_module_->AddRef(); |
| if (module_process_thread_.RegisterModule(capture_module_) != 0) { |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| ViECapturer* ViECapturer::CreateViECapture( |
| int capture_id, |
| int engine_id, |
| const Config& config, |
| const char* device_unique_idUTF8, |
| const uint32_t device_unique_idUTF8Length, |
| ProcessThread& module_process_thread) { |
| ViECapturer* capture = new ViECapturer(capture_id, engine_id, config, |
| module_process_thread); |
| if (!capture || |
| capture->Init(device_unique_idUTF8, device_unique_idUTF8Length) != 0) { |
| delete capture; |
| capture = NULL; |
| } |
| return capture; |
| } |
| |
| int32_t ViECapturer::Init(const char* device_unique_idUTF8, |
| uint32_t device_unique_idUTF8Length) { |
| assert(capture_module_ == NULL); |
| if (device_unique_idUTF8 == NULL) { |
| capture_module_ = VideoCaptureFactory::Create( |
| ViEModuleId(engine_id_, capture_id_), external_capture_module_); |
| } else { |
| capture_module_ = VideoCaptureFactory::Create( |
| ViEModuleId(engine_id_, capture_id_), device_unique_idUTF8); |
| } |
| if (!capture_module_) { |
| return -1; |
| } |
| capture_module_->AddRef(); |
| capture_module_->RegisterCaptureDataCallback(*this); |
| if (module_process_thread_.RegisterModule(capture_module_) != 0) { |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int ViECapturer::FrameCallbackChanged() { |
| if (Started() && !CaptureCapabilityFixed()) { |
| // Reconfigure the camera if a new size is required and the capture device |
| // does not provide encoded frames. |
| int best_width; |
| int best_height; |
| int best_frame_rate; |
| VideoCaptureCapability capture_settings; |
| capture_module_->CaptureSettings(capture_settings); |
| GetBestFormat(&best_width, &best_height, &best_frame_rate); |
| if (best_width != 0 && best_height != 0 && best_frame_rate != 0) { |
| if (best_width != capture_settings.width || |
| best_height != capture_settings.height || |
| best_frame_rate != capture_settings.maxFPS || |
| capture_settings.codecType != kVideoCodecUnknown) { |
| Stop(); |
| Start(requested_capability_); |
| } |
| } |
| } |
| return 0; |
| } |
| |
| int32_t ViECapturer::Start(const CaptureCapability& capture_capability) { |
| int width; |
| int height; |
| int frame_rate; |
| VideoCaptureCapability capability; |
| requested_capability_ = capture_capability; |
| |
| if (!CaptureCapabilityFixed()) { |
| // Ask the observers for best size. |
| GetBestFormat(&width, &height, &frame_rate); |
| if (width == 0) { |
| width = kViECaptureDefaultWidth; |
| } |
| if (height == 0) { |
| height = kViECaptureDefaultHeight; |
| } |
| if (frame_rate == 0) { |
| frame_rate = kViECaptureDefaultFramerate; |
| } |
| capability.height = height; |
| capability.width = width; |
| capability.maxFPS = frame_rate; |
| capability.rawType = kVideoI420; |
| capability.codecType = kVideoCodecUnknown; |
| } else { |
| // Width, height and type specified with call to Start, not set by |
| // observers. |
| capability.width = requested_capability_.width; |
| capability.height = requested_capability_.height; |
| capability.maxFPS = requested_capability_.maxFPS; |
| capability.rawType = requested_capability_.rawType; |
| capability.interlaced = requested_capability_.interlaced; |
| } |
| return capture_module_->StartCapture(capability); |
| } |
| |
| int32_t ViECapturer::Stop() { |
| requested_capability_ = CaptureCapability(); |
| return capture_module_->StopCapture(); |
| } |
| |
| bool ViECapturer::Started() { |
| return capture_module_->CaptureStarted(); |
| } |
| |
| const char* ViECapturer::CurrentDeviceName() const { |
| return capture_module_->CurrentDeviceName(); |
| } |
| |
| void ViECapturer::RegisterCpuOveruseObserver(CpuOveruseObserver* observer) { |
| overuse_detector_->SetObserver(observer); |
| } |
| |
| void ViECapturer::SetCpuOveruseOptions(const CpuOveruseOptions& options) { |
| overuse_detector_->SetOptions(options); |
| } |
| |
| void ViECapturer::GetCpuOveruseMetrics(CpuOveruseMetrics* metrics) const { |
| overuse_detector_->GetCpuOveruseMetrics(metrics); |
| } |
| |
| int32_t ViECapturer::SetCaptureDelay(int32_t delay_ms) { |
| capture_module_->SetCaptureDelay(delay_ms); |
| return 0; |
| } |
| |
| int32_t ViECapturer::SetRotateCapturedFrames( |
| const RotateCapturedFrame rotation) { |
| VideoCaptureRotation converted_rotation = kCameraRotate0; |
| switch (rotation) { |
| case RotateCapturedFrame_0: |
| converted_rotation = kCameraRotate0; |
| break; |
| case RotateCapturedFrame_90: |
| converted_rotation = kCameraRotate90; |
| break; |
| case RotateCapturedFrame_180: |
| converted_rotation = kCameraRotate180; |
| break; |
| case RotateCapturedFrame_270: |
| converted_rotation = kCameraRotate270; |
| break; |
| } |
| return capture_module_->SetCaptureRotation(converted_rotation); |
| } |
| |
| int ViECapturer::IncomingFrame(unsigned char* video_frame, |
| unsigned int video_frame_length, |
| uint16_t width, |
| uint16_t height, |
| RawVideoType video_type, |
| unsigned long long capture_time) { // NOLINT |
| if (!external_capture_module_) { |
| return -1; |
| } |
| VideoCaptureCapability capability; |
| capability.width = width; |
| capability.height = height; |
| capability.rawType = video_type; |
| return external_capture_module_->IncomingFrame(video_frame, |
| video_frame_length, |
| capability, capture_time); |
| } |
| |
| int ViECapturer::IncomingFrameI420(const ViEVideoFrameI420& video_frame, |
| unsigned long long capture_time) { // NOLINT |
| if (!external_capture_module_) { |
| return -1; |
| } |
| |
| int size_y = video_frame.height * video_frame.y_pitch; |
| int size_u = video_frame.u_pitch * ((video_frame.height + 1) / 2); |
| int size_v = video_frame.v_pitch * ((video_frame.height + 1) / 2); |
| CriticalSectionScoped cs(incoming_frame_cs_.get()); |
| int ret = incoming_frame_.CreateFrame(size_y, |
| video_frame.y_plane, |
| size_u, |
| video_frame.u_plane, |
| size_v, |
| video_frame.v_plane, |
| video_frame.width, |
| video_frame.height, |
| video_frame.y_pitch, |
| video_frame.u_pitch, |
| video_frame.v_pitch); |
| |
| if (ret < 0) { |
| LOG_F(LS_ERROR) << "Could not create I420Frame."; |
| return -1; |
| } |
| |
| return external_capture_module_->IncomingI420VideoFrame(&incoming_frame_, |
| capture_time); |
| } |
| |
| void ViECapturer::SwapFrame(I420VideoFrame* frame) { |
| external_capture_module_->IncomingI420VideoFrame(frame, |
| frame->render_time_ms()); |
| frame->set_timestamp(0); |
| frame->set_ntp_time_ms(0); |
| frame->set_render_time_ms(0); |
| } |
| |
| void ViECapturer::OnIncomingCapturedFrame(const int32_t capture_id, |
| I420VideoFrame& video_frame) { |
| CriticalSectionScoped cs(capture_cs_.get()); |
| // Make sure we render this frame earlier since we know the render time set |
| // is slightly off since it's being set when the frame has been received from |
| // the camera, and not when the camera actually captured the frame. |
| video_frame.set_render_time_ms(video_frame.render_time_ms() - FrameDelay()); |
| |
| TRACE_EVENT_ASYNC_BEGIN1("webrtc", "Video", video_frame.render_time_ms(), |
| "render_time", video_frame.render_time_ms()); |
| |
| if (video_frame.native_handle() != NULL) { |
| captured_frame_.reset(video_frame.CloneFrame()); |
| } else { |
| if (captured_frame_ == NULL || captured_frame_->native_handle() != NULL) |
| captured_frame_.reset(new I420VideoFrame()); |
| captured_frame_->SwapFrame(&video_frame); |
| } |
| capture_event_.Set(); |
| overuse_detector_->FrameCaptured(captured_frame_->width(), |
| captured_frame_->height()); |
| } |
| |
| void ViECapturer::OnCaptureDelayChanged(const int32_t id, |
| const int32_t delay) { |
| LOG(LS_INFO) << "Capture delayed change to " << delay |
| << " for device " << id; |
| |
| // Deliver the network delay to all registered callbacks. |
| ViEFrameProviderBase::SetFrameDelay(delay); |
| } |
| |
| int32_t ViECapturer::RegisterEffectFilter( |
| ViEEffectFilter* effect_filter) { |
| CriticalSectionScoped cs(deliver_cs_.get()); |
| |
| if (effect_filter != NULL && effect_filter_ != NULL) { |
| LOG_F(LS_ERROR) << "Effect filter already registered."; |
| return -1; |
| } |
| effect_filter_ = effect_filter; |
| return 0; |
| } |
| |
| int32_t ViECapturer::IncImageProcRefCount() { |
| if (!image_proc_module_) { |
| assert(image_proc_module_ref_counter_ == 0); |
| image_proc_module_ = VideoProcessingModule::Create( |
| ViEModuleId(engine_id_, capture_id_)); |
| if (!image_proc_module_) { |
| LOG_F(LS_ERROR) << "Could not create video processing module."; |
| return -1; |
| } |
| } |
| image_proc_module_ref_counter_++; |
| return 0; |
| } |
| |
| int32_t ViECapturer::DecImageProcRefCount() { |
| image_proc_module_ref_counter_--; |
| if (image_proc_module_ref_counter_ == 0) { |
| // Destroy module. |
| VideoProcessingModule::Destroy(image_proc_module_); |
| image_proc_module_ = NULL; |
| } |
| return 0; |
| } |
| |
| int32_t ViECapturer::EnableDeflickering(bool enable) { |
| CriticalSectionScoped cs(deliver_cs_.get()); |
| if (enable) { |
| if (deflicker_frame_stats_) { |
| return -1; |
| } |
| if (IncImageProcRefCount() != 0) { |
| return -1; |
| } |
| deflicker_frame_stats_ = new VideoProcessingModule::FrameStats(); |
| } else { |
| if (deflicker_frame_stats_ == NULL) { |
| return -1; |
| } |
| DecImageProcRefCount(); |
| delete deflicker_frame_stats_; |
| deflicker_frame_stats_ = NULL; |
| } |
| return 0; |
| } |
| |
| int32_t ViECapturer::EnableBrightnessAlarm(bool enable) { |
| CriticalSectionScoped cs(deliver_cs_.get()); |
| if (enable) { |
| if (brightness_frame_stats_) { |
| return -1; |
| } |
| if (IncImageProcRefCount() != 0) { |
| return -1; |
| } |
| brightness_frame_stats_ = new VideoProcessingModule::FrameStats(); |
| } else { |
| DecImageProcRefCount(); |
| if (brightness_frame_stats_ == NULL) { |
| return -1; |
| } |
| delete brightness_frame_stats_; |
| brightness_frame_stats_ = NULL; |
| } |
| return 0; |
| } |
| |
| bool ViECapturer::ViECaptureThreadFunction(void* obj) { |
| return static_cast<ViECapturer*>(obj)->ViECaptureProcess(); |
| } |
| |
| bool ViECapturer::ViECaptureProcess() { |
| if (capture_event_.Wait(kThreadWaitTimeMs) == kEventSignaled) { |
| overuse_detector_->FrameProcessingStarted(); |
| int64_t encode_start_time = -1; |
| deliver_cs_->Enter(); |
| if (SwapCapturedAndDeliverFrameIfAvailable()) { |
| encode_start_time = Clock::GetRealTimeClock()->TimeInMilliseconds(); |
| DeliverI420Frame(deliver_frame_.get()); |
| if (deliver_frame_->native_handle() != NULL) |
| deliver_frame_.reset(); // Release the texture so it can be reused. |
| } |
| deliver_cs_->Leave(); |
| if (current_brightness_level_ != reported_brightness_level_) { |
| CriticalSectionScoped cs(observer_cs_.get()); |
| if (observer_) { |
| observer_->BrightnessAlarm(id_, current_brightness_level_); |
| reported_brightness_level_ = current_brightness_level_; |
| } |
| } |
| // Update the overuse detector with the duration. |
| if (encode_start_time != -1) { |
| overuse_detector_->FrameEncoded( |
| Clock::GetRealTimeClock()->TimeInMilliseconds() - encode_start_time); |
| } |
| } |
| // We're done! |
| return true; |
| } |
| |
| void ViECapturer::DeliverI420Frame(I420VideoFrame* video_frame) { |
| if (video_frame->native_handle() != NULL) { |
| ViEFrameProviderBase::DeliverFrame(video_frame); |
| return; |
| } |
| |
| // Apply image enhancement and effect filter. |
| if (deflicker_frame_stats_) { |
| if (image_proc_module_->GetFrameStats(deflicker_frame_stats_, |
| *video_frame) == 0) { |
| image_proc_module_->Deflickering(video_frame, deflicker_frame_stats_); |
| } else { |
| LOG_F(LS_ERROR) << "Could not get frame stats."; |
| } |
| } |
| if (brightness_frame_stats_) { |
| if (image_proc_module_->GetFrameStats(brightness_frame_stats_, |
| *video_frame) == 0) { |
| int32_t brightness = image_proc_module_->BrightnessDetection( |
| *video_frame, *brightness_frame_stats_); |
| |
| switch (brightness) { |
| case VideoProcessingModule::kNoWarning: |
| current_brightness_level_ = Normal; |
| break; |
| case VideoProcessingModule::kDarkWarning: |
| current_brightness_level_ = Dark; |
| break; |
| case VideoProcessingModule::kBrightWarning: |
| current_brightness_level_ = Bright; |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| if (effect_filter_) { |
| unsigned int length = CalcBufferSize(kI420, |
| video_frame->width(), |
| video_frame->height()); |
| scoped_ptr<uint8_t[]> video_buffer(new uint8_t[length]); |
| ExtractBuffer(*video_frame, length, video_buffer.get()); |
| effect_filter_->Transform(length, |
| video_buffer.get(), |
| video_frame->ntp_time_ms(), |
| video_frame->timestamp(), |
| video_frame->width(), |
| video_frame->height()); |
| } |
| // Deliver the captured frame to all observers (channels, renderer or file). |
| ViEFrameProviderBase::DeliverFrame(video_frame); |
| } |
| |
| int ViECapturer::DeregisterFrameCallback( |
| const ViEFrameCallback* callbackObject) { |
| return ViEFrameProviderBase::DeregisterFrameCallback(callbackObject); |
| } |
| |
| bool ViECapturer::IsFrameCallbackRegistered( |
| const ViEFrameCallback* callbackObject) { |
| CriticalSectionScoped cs(provider_cs_.get()); |
| return ViEFrameProviderBase::IsFrameCallbackRegistered(callbackObject); |
| } |
| |
| bool ViECapturer::CaptureCapabilityFixed() { |
| return requested_capability_.width != 0 && |
| requested_capability_.height != 0 && |
| requested_capability_.maxFPS != 0; |
| } |
| |
| int32_t ViECapturer::RegisterObserver(ViECaptureObserver* observer) { |
| { |
| CriticalSectionScoped cs(observer_cs_.get()); |
| if (observer_) { |
| LOG_F(LS_ERROR) << "Observer already registered."; |
| return -1; |
| } |
| observer_ = observer; |
| } |
| capture_module_->RegisterCaptureCallback(*this); |
| capture_module_->EnableFrameRateCallback(true); |
| capture_module_->EnableNoPictureAlarm(true); |
| return 0; |
| } |
| |
| int32_t ViECapturer::DeRegisterObserver() { |
| capture_module_->EnableFrameRateCallback(false); |
| capture_module_->EnableNoPictureAlarm(false); |
| capture_module_->DeRegisterCaptureCallback(); |
| |
| CriticalSectionScoped cs(observer_cs_.get()); |
| observer_ = NULL; |
| return 0; |
| } |
| |
| bool ViECapturer::IsObserverRegistered() { |
| CriticalSectionScoped cs(observer_cs_.get()); |
| return observer_ != NULL; |
| } |
| |
| void ViECapturer::OnCaptureFrameRate(const int32_t id, |
| const uint32_t frame_rate) { |
| CriticalSectionScoped cs(observer_cs_.get()); |
| observer_->CapturedFrameRate(id_, static_cast<uint8_t>(frame_rate)); |
| } |
| |
| void ViECapturer::OnNoPictureAlarm(const int32_t id, |
| const VideoCaptureAlarm alarm) { |
| LOG(LS_WARNING) << "OnNoPictureAlarm " << id; |
| |
| CriticalSectionScoped cs(observer_cs_.get()); |
| CaptureAlarm vie_alarm = (alarm == Raised) ? AlarmRaised : AlarmCleared; |
| observer_->NoPictureAlarm(id, vie_alarm); |
| } |
| |
| bool ViECapturer::SwapCapturedAndDeliverFrameIfAvailable() { |
| CriticalSectionScoped cs(capture_cs_.get()); |
| if (captured_frame_ == NULL) |
| return false; |
| |
| if (captured_frame_->native_handle() != NULL) { |
| deliver_frame_.reset(captured_frame_.release()); |
| return true; |
| } |
| |
| if (captured_frame_->IsZeroSize()) |
| return false; |
| |
| if (deliver_frame_ == NULL) |
| deliver_frame_.reset(new I420VideoFrame()); |
| deliver_frame_->SwapFrame(captured_frame_.get()); |
| captured_frame_->ResetSize(); |
| return true; |
| } |
| |
| } // namespace webrtc |
