| /* |
| * 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/modules/video_capture/windows/video_capture_ds.h" |
| |
| #include "webrtc/modules/video_capture/video_capture_config.h" |
| #include "webrtc/modules/video_capture/windows/help_functions_ds.h" |
| #include "webrtc/modules/video_capture/windows/sink_filter_ds.h" |
| #include "webrtc/rtc_base/logging.h" |
| |
| #include <Dvdmedia.h> // VIDEOINFOHEADER2 |
| |
| namespace webrtc |
| { |
| namespace videocapturemodule |
| { |
| VideoCaptureDS::VideoCaptureDS() |
| : _captureFilter(NULL), |
| _graphBuilder(NULL), _mediaControl(NULL), _sinkFilter(NULL), |
| _inputSendPin(NULL), _outputCapturePin(NULL), _dvFilter(NULL), |
| _inputDvPin(NULL), _outputDvPin(NULL) |
| { |
| } |
| |
| VideoCaptureDS::~VideoCaptureDS() |
| { |
| if (_mediaControl) |
| { |
| _mediaControl->Stop(); |
| } |
| if (_graphBuilder) |
| { |
| if (_sinkFilter) |
| _graphBuilder->RemoveFilter(_sinkFilter); |
| if (_captureFilter) |
| _graphBuilder->RemoveFilter(_captureFilter); |
| if (_dvFilter) |
| _graphBuilder->RemoveFilter(_dvFilter); |
| } |
| RELEASE_AND_CLEAR(_inputSendPin); |
| RELEASE_AND_CLEAR(_outputCapturePin); |
| |
| RELEASE_AND_CLEAR(_captureFilter); // release the capture device |
| RELEASE_AND_CLEAR(_sinkFilter); |
| RELEASE_AND_CLEAR(_dvFilter); |
| |
| RELEASE_AND_CLEAR(_mediaControl); |
| |
| RELEASE_AND_CLEAR(_inputDvPin); |
| RELEASE_AND_CLEAR(_outputDvPin); |
| |
| RELEASE_AND_CLEAR(_graphBuilder); |
| } |
| |
| int32_t VideoCaptureDS::Init(const char* deviceUniqueIdUTF8) |
| { |
| const int32_t nameLength = |
| (int32_t) strlen((char*) deviceUniqueIdUTF8); |
| if (nameLength > kVideoCaptureUniqueNameLength) |
| return -1; |
| |
| // Store the device name |
| _deviceUniqueId = new (std::nothrow) char[nameLength + 1]; |
| memcpy(_deviceUniqueId, deviceUniqueIdUTF8, nameLength + 1); |
| |
| if (_dsInfo.Init() != 0) |
| return -1; |
| |
| _captureFilter = _dsInfo.GetDeviceFilter(deviceUniqueIdUTF8); |
| if (!_captureFilter) |
| { |
| LOG(LS_INFO) << "Failed to create capture filter."; |
| return -1; |
| } |
| |
| // Get the interface for DirectShow's GraphBuilder |
| HRESULT hr = CoCreateInstance(CLSID_FilterGraph, NULL, |
| CLSCTX_INPROC_SERVER, IID_IGraphBuilder, |
| (void **) &_graphBuilder); |
| if (FAILED(hr)) |
| { |
| LOG(LS_INFO) << "Failed to create graph builder."; |
| return -1; |
| } |
| |
| hr = _graphBuilder->QueryInterface(IID_IMediaControl, |
| (void **) &_mediaControl); |
| if (FAILED(hr)) |
| { |
| LOG(LS_INFO) << "Failed to create media control builder."; |
| return -1; |
| } |
| hr = _graphBuilder->AddFilter(_captureFilter, CAPTURE_FILTER_NAME); |
| if (FAILED(hr)) |
| { |
| LOG(LS_INFO) << "Failed to add the capture device to the graph."; |
| return -1; |
| } |
| |
| _outputCapturePin = GetOutputPin(_captureFilter, PIN_CATEGORY_CAPTURE); |
| |
| // Create the sink filte used for receiving Captured frames. |
| _sinkFilter = new CaptureSinkFilter(SINK_FILTER_NAME, NULL, &hr, |
| *this); |
| if (hr != S_OK) |
| { |
| LOG(LS_INFO) << "Failed to create send filter"; |
| return -1; |
| } |
| _sinkFilter->AddRef(); |
| |
| hr = _graphBuilder->AddFilter(_sinkFilter, SINK_FILTER_NAME); |
| if (FAILED(hr)) |
| { |
| LOG(LS_INFO) << "Failed to add the send filter to the graph."; |
| return -1; |
| } |
| _inputSendPin = GetInputPin(_sinkFilter); |
| |
| // Temporary connect here. |
| // This is done so that no one else can use the capture device. |
| if (SetCameraOutput(_requestedCapability) != 0) |
| { |
| return -1; |
| } |
| hr = _mediaControl->Pause(); |
| if (FAILED(hr)) |
| { |
| LOG(LS_INFO) |
| << "Failed to Pause the Capture device. Is it already occupied? " |
| << hr; |
| return -1; |
| } |
| LOG(LS_INFO) << "Capture device '" << deviceUniqueIdUTF8 |
| << "' initialized."; |
| return 0; |
| } |
| |
| int32_t VideoCaptureDS::StartCapture( |
| const VideoCaptureCapability& capability) |
| { |
| rtc::CritScope cs(&_apiCs); |
| |
| if (capability != _requestedCapability) |
| { |
| DisconnectGraph(); |
| |
| if (SetCameraOutput(capability) != 0) |
| { |
| return -1; |
| } |
| } |
| HRESULT hr = _mediaControl->Run(); |
| if (FAILED(hr)) |
| { |
| LOG(LS_INFO) << "Failed to start the Capture device."; |
| return -1; |
| } |
| return 0; |
| } |
| |
| int32_t VideoCaptureDS::StopCapture() |
| { |
| rtc::CritScope cs(&_apiCs); |
| |
| HRESULT hr = _mediaControl->Pause(); |
| if (FAILED(hr)) |
| { |
| LOG(LS_INFO) << "Failed to stop the capture graph. " << hr; |
| return -1; |
| } |
| return 0; |
| } |
| bool VideoCaptureDS::CaptureStarted() |
| { |
| OAFilterState state = 0; |
| HRESULT hr = _mediaControl->GetState(1000, &state); |
| if (hr != S_OK && hr != VFW_S_CANT_CUE) |
| { |
| LOG(LS_INFO) << "Failed to get the CaptureStarted status"; |
| } |
| LOG(LS_INFO) << "CaptureStarted " << state; |
| return state == State_Running; |
| |
| } |
| int32_t VideoCaptureDS::CaptureSettings( |
| VideoCaptureCapability& settings) |
| { |
| settings = _requestedCapability; |
| return 0; |
| } |
| |
| int32_t VideoCaptureDS::SetCameraOutput( |
| const VideoCaptureCapability& requestedCapability) |
| { |
| |
| // Get the best matching capability |
| VideoCaptureCapability capability; |
| int32_t capabilityIndex; |
| |
| // Store the new requested size |
| _requestedCapability = requestedCapability; |
| // Match the requested capability with the supported. |
| if ((capabilityIndex = _dsInfo.GetBestMatchedCapability(_deviceUniqueId, |
| _requestedCapability, |
| capability)) < 0) |
| { |
| return -1; |
| } |
| //Reduce the frame rate if possible. |
| if (capability.maxFPS > requestedCapability.maxFPS) |
| { |
| capability.maxFPS = requestedCapability.maxFPS; |
| } else if (capability.maxFPS <= 0) |
| { |
| capability.maxFPS = 30; |
| } |
| |
| // Convert it to the windows capability index since they are not nexessary |
| // the same |
| VideoCaptureCapabilityWindows windowsCapability; |
| if (_dsInfo.GetWindowsCapability(capabilityIndex, windowsCapability) != 0) |
| { |
| return -1; |
| } |
| |
| IAMStreamConfig* streamConfig = NULL; |
| AM_MEDIA_TYPE *pmt = NULL; |
| VIDEO_STREAM_CONFIG_CAPS caps; |
| |
| HRESULT hr = _outputCapturePin->QueryInterface(IID_IAMStreamConfig, |
| (void**) &streamConfig); |
| if (hr) |
| { |
| LOG(LS_INFO) << "Can't get the Capture format settings."; |
| return -1; |
| } |
| |
| //Get the windows capability from the capture device |
| bool isDVCamera = false; |
| hr = streamConfig->GetStreamCaps( |
| windowsCapability.directShowCapabilityIndex, |
| &pmt, reinterpret_cast<BYTE*> (&caps)); |
| if (!FAILED(hr)) |
| { |
| if (pmt->formattype == FORMAT_VideoInfo2) |
| { |
| VIDEOINFOHEADER2* h = |
| reinterpret_cast<VIDEOINFOHEADER2*> (pmt->pbFormat); |
| if (capability.maxFPS > 0 |
| && windowsCapability.supportFrameRateControl) |
| { |
| h->AvgTimePerFrame = REFERENCE_TIME(10000000.0 |
| / capability.maxFPS); |
| } |
| } |
| else |
| { |
| VIDEOINFOHEADER* h = reinterpret_cast<VIDEOINFOHEADER*> |
| (pmt->pbFormat); |
| if (capability.maxFPS > 0 |
| && windowsCapability.supportFrameRateControl) |
| { |
| h->AvgTimePerFrame = REFERENCE_TIME(10000000.0 |
| / capability.maxFPS); |
| } |
| |
| } |
| |
| // Set the sink filter to request this capability |
| _sinkFilter->SetMatchingMediaType(capability); |
| //Order the capture device to use this capability |
| hr += streamConfig->SetFormat(pmt); |
| |
| //Check if this is a DV camera and we need to add MS DV Filter |
| if (pmt->subtype == MEDIASUBTYPE_dvsl |
| || pmt->subtype == MEDIASUBTYPE_dvsd |
| || pmt->subtype == MEDIASUBTYPE_dvhd) |
| isDVCamera = true; // This is a DV camera. Use MS DV filter |
| } |
| RELEASE_AND_CLEAR(streamConfig); |
| |
| if (FAILED(hr)) |
| { |
| LOG(LS_INFO) << "Failed to set capture device output format"; |
| return -1; |
| } |
| |
| if (isDVCamera) |
| { |
| hr = ConnectDVCamera(); |
| } |
| else |
| { |
| hr = _graphBuilder->ConnectDirect(_outputCapturePin, _inputSendPin, |
| NULL); |
| } |
| if (hr != S_OK) |
| { |
| LOG(LS_INFO) << "Failed to connect the Capture graph " << hr; |
| return -1; |
| } |
| return 0; |
| } |
| |
| int32_t VideoCaptureDS::DisconnectGraph() |
| { |
| HRESULT hr = _mediaControl->Stop(); |
| hr += _graphBuilder->Disconnect(_outputCapturePin); |
| hr += _graphBuilder->Disconnect(_inputSendPin); |
| |
| //if the DV camera filter exist |
| if (_dvFilter) |
| { |
| _graphBuilder->Disconnect(_inputDvPin); |
| _graphBuilder->Disconnect(_outputDvPin); |
| } |
| if (hr != S_OK) |
| { |
| LOG(LS_ERROR) |
| << "Failed to Stop the Capture device for reconfiguration " |
| << hr; |
| return -1; |
| } |
| return 0; |
| } |
| HRESULT VideoCaptureDS::ConnectDVCamera() |
| { |
| HRESULT hr = S_OK; |
| |
| if (!_dvFilter) |
| { |
| hr = CoCreateInstance(CLSID_DVVideoCodec, NULL, CLSCTX_INPROC, |
| IID_IBaseFilter, (void **) &_dvFilter); |
| if (hr != S_OK) |
| { |
| LOG(LS_INFO) << "Failed to create the dv decoder: " << hr; |
| return hr; |
| } |
| hr = _graphBuilder->AddFilter(_dvFilter, L"VideoDecoderDV"); |
| if (hr != S_OK) |
| { |
| LOG(LS_INFO) << "Failed to add the dv decoder to the graph: " << hr; |
| return hr; |
| } |
| _inputDvPin = GetInputPin(_dvFilter); |
| if (_inputDvPin == NULL) |
| { |
| LOG(LS_INFO) << "Failed to get input pin from DV decoder"; |
| return -1; |
| } |
| _outputDvPin = GetOutputPin(_dvFilter, GUID_NULL); |
| if (_outputDvPin == NULL) |
| { |
| LOG(LS_INFO) << "Failed to get output pin from DV decoder"; |
| return -1; |
| } |
| } |
| hr = _graphBuilder->ConnectDirect(_outputCapturePin, _inputDvPin, NULL); |
| if (hr != S_OK) |
| { |
| LOG(LS_INFO) << "Failed to connect capture device to the dv devoder: " |
| << hr; |
| return hr; |
| } |
| |
| hr = _graphBuilder->ConnectDirect(_outputDvPin, _inputSendPin, NULL); |
| if (hr != S_OK) |
| { |
| if (hr == HRESULT_FROM_WIN32(ERROR_TOO_MANY_OPEN_FILES)) |
| { |
| LOG(LS_INFO) << "Failed to connect the capture device, busy"; |
| } |
| else |
| { |
| LOG(LS_INFO) |
| << "Failed to connect capture device to the send graph: " |
| << hr; |
| } |
| return hr; |
| } |
| return hr; |
| } |
| } // namespace videocapturemodule |
| } // namespace webrtc |
