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115 lines
2.9 KiB
C++
115 lines
2.9 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CameraPreview.h"
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#include "Layers.h"
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#include "ImageContainer.h"
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#define DOM_CAMERA_LOG_LEVEL 3
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#include "CameraCommon.h"
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using namespace mozilla;
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NS_IMPL_THREADSAFE_ISUPPORTS1(CameraPreview, CameraPreview)
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class CameraPreviewListener : public MediaStreamListener
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{
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public:
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CameraPreviewListener(CameraPreview* aPreview) :
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mPreview(aPreview)
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{
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DOM_CAMERA_LOGI("%s:%d : this=%p\n", __func__, __LINE__, this);
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}
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~CameraPreviewListener()
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{
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DOM_CAMERA_LOGI("%s:%d : this=%p\n", __func__, __LINE__, this);
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}
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void NotifyConsumptionChanged(MediaStreamGraph* aGraph, Consumption aConsuming)
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{
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const char* state;
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DOM_CAMERA_LOGI("%s:%d : this=%p\n", __func__, __LINE__, this);
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switch (aConsuming) {
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case NOT_CONSUMED:
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state = "not consuming";
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break;
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case CONSUMED:
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state = "consuming";
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break;
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default:
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state = "unknown";
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break;
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}
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DOM_CAMERA_LOGA("camera viewfinder is %s\n", state);
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switch (aConsuming) {
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case NOT_CONSUMED:
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mPreview->Stop();
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break;
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case CONSUMED:
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mPreview->Start();
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break;
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}
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}
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protected:
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nsCOMPtr<CameraPreview> mPreview;
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};
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CameraPreview::CameraPreview(nsIThread* aCameraThread, uint32_t aWidth, uint32_t aHeight)
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: nsDOMMediaStream()
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, mWidth(aWidth)
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, mHeight(aHeight)
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, mFramesPerSecond(0)
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, mFrameCount(0)
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, mCameraThread(aCameraThread)
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{
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DOM_CAMERA_LOGI("%s:%d : mWidth=%d, mHeight=%d : this=%p\n", __func__, __LINE__, mWidth, mHeight, this);
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mImageContainer = LayerManager::CreateImageContainer();
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MediaStreamGraph* gm = MediaStreamGraph::GetInstance();
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mStream = gm->CreateInputStream(this);
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mInput = GetStream()->AsSourceStream();
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mInput->AddListener(new CameraPreviewListener(this));
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}
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void
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CameraPreview::SetFrameRate(uint32_t aFramesPerSecond)
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{
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mFramesPerSecond = aFramesPerSecond;
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mInput->AddTrack(TRACK_VIDEO, mFramesPerSecond, 0, new VideoSegment());
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mInput->AdvanceKnownTracksTime(MEDIA_TIME_MAX);
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}
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void
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CameraPreview::Start()
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{
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nsCOMPtr<nsIRunnable> cameraPreviewControl = NS_NewRunnableMethod(this, &CameraPreview::StartImpl);
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nsresult rv = mCameraThread->Dispatch(cameraPreviewControl, NS_DISPATCH_NORMAL);
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if (NS_FAILED(rv)) {
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DOM_CAMERA_LOGE("failed to start camera preview (%d)\n", rv);
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}
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}
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void
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CameraPreview::Stop()
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{
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nsCOMPtr<nsIRunnable> cameraPreviewControl = NS_NewRunnableMethod(this, &CameraPreview::StopImpl);
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nsresult rv = mCameraThread->Dispatch(cameraPreviewControl, NS_DISPATCH_NORMAL);
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if (NS_FAILED(rv)) {
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DOM_CAMERA_LOGE("failed to stop camera preview (%d)\n", rv);
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}
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}
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CameraPreview::~CameraPreview()
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{
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DOM_CAMERA_LOGI("%s:%d : this=%p\n", __func__, __LINE__, this);
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}
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