Vitaliy Zarubin
2 years ago
19 changed files with 748 additions and 613 deletions
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|
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/**
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* SPDX-FileCopyrightText: Copyright 2023 Open Mobile Platform LLC <community@omp.ru> |
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* SPDX-License-Identifier: BSD-3-Clause |
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*/ |
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#ifndef TEXTURE_CAMERA_BUFFER_H |
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#define TEXTURE_CAMERA_BUFFER_H |
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#include <flutter/plugin-interface.h> |
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#include <streamcamera/streamcamera.h> |
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#include <QImage> |
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#include <QtCore> |
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typedef std::function<void()> CameraErrorHandler; |
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class TextureCamera : public Aurora::StreamCamera::CameraListener |
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{ |
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public: |
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TextureCamera(TextureRegistrar *plugin, const CameraErrorHandler &onError); |
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void onCameraError(const std::string &errorDescription) override; |
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void onCameraFrame(std::shared_ptr<Aurora::StreamCamera::GraphicBuffer> buffer) override; |
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void onCameraParameterChanged(Aurora::StreamCamera::CameraParameter, |
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const std::string &value) override; |
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std::vector<Encodable> GetAvailableCameras(); |
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std::map<Encodable, Encodable> Register(std::string cameraName); |
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std::map<Encodable, Encodable> Unregister(); |
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std::map<Encodable, Encodable> StartCapture(size_t width, size_t height); |
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void StopCapture(); |
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std::map<Encodable, Encodable> GetState(); |
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std::string GetImageBase64(); |
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private: |
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bool CreateCamera(std::string cameraName); |
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void SendError(std::string error); |
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private: |
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TextureRegistrar *m_plugin; |
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CameraErrorHandler m_onError; |
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std::string m_error; |
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Aurora::StreamCamera::CameraManager *m_manager; |
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std::shared_ptr<Aurora::StreamCamera::Camera> m_camera; |
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int64_t m_textureId = 0; |
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size_t m_captureWidth = 0; |
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size_t m_captureHeight = 0; |
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size_t m_viewWidth = 0; |
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size_t m_viewHeight = 0; |
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TextureVariant *m_variant; |
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QImage *m_image; |
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}; |
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#endif /* TEXTURE_CAMERA_BUFFER_H */ |
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/**
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* SPDX-FileCopyrightText: Copyright 2023 Open Mobile Platform LLC <community@omp.ru> |
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* SPDX-License-Identifier: BSD-3-Clause |
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*/ |
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#ifndef TEXTURE_CAMERA_EGL_HELPER_H |
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#define TEXTURE_CAMERA_EGL_HELPER_H |
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#include <streamcamera/streamcamera.h> |
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#include <EGL/egl.h> |
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#include <EGL/eglext.h> |
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class TextureCameraEGLHelper |
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{ |
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public: |
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static void EGLInit(); |
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static EGLImageKHR EGLCreateImage(std::shared_ptr<Aurora::StreamCamera::GraphicBuffer> buffer); |
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static void EGLDestroyImage(EGLImageKHR image); |
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}; |
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#endif /* TEXTURE_CAMERA_EGL_HELPER_H */ |
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/**
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* SPDX-FileCopyrightText: Copyright 2023 Open Mobile Platform LLC <community@omp.ru> |
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* SPDX-License-Identifier: BSD-3-Clause |
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*/ |
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#ifndef TEXTURE_CAMERA_PIXELS_HELPER_H |
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#define TEXTURE_CAMERA_PIXELS_HELPER_H |
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#include <flutter/plugin-interface.h> |
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#include <streamcamera/streamcamera.h> |
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#include <QImage> |
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#include <QtCore> |
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class TextureCameraPixelsHelper |
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{ |
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public: |
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static QImage *YUVtoARGB(std::shared_ptr<const Aurora::StreamCamera::YCbCrFrame> frame); |
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private: |
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static quint32 yuvToArgb(qint32 y, qint32 rv, qint32 guv, qint32 bu, qint32 a); |
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static void planarYuv420ToArgb(const uchar *y, |
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const uchar *u, |
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const uchar *v, |
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qint32 yStride, |
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qint32 uStride, |
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qint32 vStride, |
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qint32 uvPixelStride, |
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quint32 *rgb, |
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qint32 width, |
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qint32 height); |
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}; |
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#endif /* TEXTURE_CAMERA_PIXELS_HELPER_H */ |
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/**
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* SPDX-FileCopyrightText: Copyright 2023 Open Mobile Platform LLC <community@omp.ru> |
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* SPDX-License-Identifier: BSD-3-Clause |
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*/ |
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#include <camera_aurora/texture_camera.h> |
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#include <camera_aurora/texture_camera_egl_helper.h> |
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#include <camera_aurora/texture_camera_pixels_helper.h> |
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#include <flutter/platform-data.h> |
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#include <flutter/platform-methods.h> |
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#include <QtCore> |
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#include <QBuffer> |
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TextureCamera::TextureCamera(TextureRegistrar *plugin, const CameraErrorHandler &onError) |
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: m_plugin(plugin) |
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, m_onError(onError) |
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, m_variant(nullptr) |
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, m_image(nullptr) |
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, m_manager(StreamCameraManager()) |
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{ |
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TextureCameraEGLHelper::EGLInit(); |
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} |
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std::vector<Encodable> TextureCamera::GetAvailableCameras() |
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{ |
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std::vector<Encodable> cameras; |
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auto count = m_manager->getNumberOfCameras(); |
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for (int index = 0; index < count; index++) { |
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Aurora::StreamCamera::CameraInfo info; |
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if (m_manager->getCameraInfo(index, info)) { |
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cameras.push_back(std::map<Encodable, Encodable>{ |
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{"id", info.id}, |
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{"name", info.name}, |
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{"provider", info.provider}, |
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{"mountAngle", info.mountAngle}, |
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}); |
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} |
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} |
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return cameras; |
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} |
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std::string TextureCamera::GetImageBase64() |
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{ |
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if (m_image && m_camera) { |
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Aurora::StreamCamera::CameraInfo info; |
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if (m_camera->getInfo(info)) { |
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QBuffer qbuffer; |
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qbuffer.open(QIODevice::WriteOnly); |
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QImage rotatedImg = m_image->transformed(QMatrix().rotate(info.mountAngle)); |
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rotatedImg.save(&qbuffer, "JPEG"); |
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return qbuffer.data().toBase64().toStdString(); |
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} |
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} |
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return ""; |
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} |
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std::map<Encodable, Encodable> TextureCamera::GetState() |
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{ |
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Aurora::StreamCamera::CameraInfo info; |
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if (m_camera && m_camera->getInfo(info)) { |
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auto orientation = static_cast<int>(PlatformMethods::GetOrientation()); |
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return std::map<Encodable, Encodable>{ |
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{"id", info.id}, |
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{"textureId", m_textureId}, |
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{"width", m_captureWidth}, |
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{"height", m_captureHeight}, |
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{"rotationCamera", info.mountAngle}, |
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{"rotationDisplay", orientation}, |
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{"error", m_error}, |
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}; |
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} |
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return std::map<Encodable, Encodable>{ |
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{"error", m_error} |
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}; |
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} |
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bool TextureCamera::CreateCamera(std::string cameraName) |
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{ |
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if (auto count = m_manager->getNumberOfCameras()) { |
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for (int index = 0; index < count; index++) { |
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Aurora::StreamCamera::CameraInfo info; |
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if (m_manager->getCameraInfo(index, info)) { |
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if (info.id == cameraName) { |
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m_camera = m_manager->openCamera(info.id); |
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if (m_camera) { |
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m_camera->setListener(this); |
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return true; |
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} else { |
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Unregister(); |
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SendError("Stream camera error open camera"); |
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return false; |
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} |
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} |
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} |
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} |
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} |
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return false; |
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} |
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void TextureCamera::SendError(std::string error) |
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{ |
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m_error = error; |
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m_onError(); |
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} |
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std::map<Encodable, Encodable> TextureCamera::StartCapture(size_t width, size_t height) |
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{ |
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m_viewWidth = width; |
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m_viewHeight = height; |
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if (m_camera) { |
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if (m_camera->captureStarted()) { |
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m_camera->stopCapture(); |
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} |
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Aurora::StreamCamera::CameraInfo info; |
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if (m_camera->getInfo(info)) { |
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std::vector<Aurora::StreamCamera::CameraCapability> caps; |
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if (m_manager->queryCapabilities(info.id, caps)) { |
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for(unsigned int i = 0; i< caps.size(); i++) { |
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if (width + height <= caps[i].width + caps[i].height || caps.size() == i - 1) { |
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m_captureWidth = caps[i].width; |
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m_captureHeight = caps[i].height; |
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if (!m_camera->startCapture(caps[i])) { |
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Unregister(); |
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SendError("Stream camera error start capture"); |
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} |
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break; |
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} |
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} |
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} |
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} |
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} |
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return GetState(); |
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} |
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void TextureCamera::StopCapture() |
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{ |
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if (m_camera && m_camera->captureStarted()) { |
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m_camera->stopCapture(); |
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} |
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} |
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std::map<Encodable, Encodable> TextureCamera::Register(std::string cameraName) |
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{ |
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m_textureId = m_plugin->RegisterTexture( |
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[this]([[maybe_unused]] size_t width, [[maybe_unused]] size_t height) { |
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return m_variant; |
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}); |
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if (CreateCamera(cameraName) && m_viewWidth != 0 && m_viewHeight != 0) { |
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StartCapture(m_viewWidth, m_viewHeight); |
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} |
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return GetState(); |
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} |
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std::map<Encodable, Encodable> TextureCamera::Unregister() |
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{ |
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StopCapture(); |
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m_error = ""; |
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m_textureId = 0; |
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m_captureWidth = 0; |
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m_captureHeight = 0; |
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m_variant = nullptr; |
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m_camera = nullptr; |
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m_plugin->UnregisterTexture(m_textureId); |
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return GetState(); |
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} |
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void TextureCamera::onCameraFrame(std::shared_ptr<Aurora::StreamCamera::GraphicBuffer> buffer) |
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{ |
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if (buffer->handleType == Aurora::StreamCamera::HandleType::EGL && false) { |
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// @todo not tested
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auto eglImage = TextureCameraEGLHelper::EGLCreateImage(buffer); |
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m_variant = new TextureVariant(FlutterEGLImage{ |
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eglImage, |
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buffer->width, |
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buffer->height, |
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}); |
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} else { |
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m_image = TextureCameraPixelsHelper::YUVtoARGB(buffer->mapYCbCr()); |
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auto pixels = static_cast<uint8_t *>(m_image->bits()); |
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m_variant = new TextureVariant(FlutterPixelBuffer{ |
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pixels, |
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buffer->width, |
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buffer->height, |
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}); |
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} |
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m_plugin->MarkTextureAvailable(m_textureId); |
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} |
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void TextureCamera::onCameraError(const std::string &errorDescription) |
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{ |
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Unregister(); |
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SendError(errorDescription); |
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} |
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void TextureCamera::onCameraParameterChanged([[maybe_unused]] Aurora::StreamCamera::CameraParameter parameter, |
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const std::string &value) |
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{ |
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std::cout << "onCameraParameterChanged: " << value << std::endl;
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} |
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@ -0,0 +1,42 @@
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/**
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* SPDX-FileCopyrightText: Copyright 2023 Open Mobile Platform LLC <community@omp.ru> |
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* SPDX-License-Identifier: BSD-3-Clause |
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*/ |
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#include <camera_aurora/texture_camera_egl_helper.h> |
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#include <flutter/platform-methods.h> |
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#include <GLES2/gl2.h> |
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#include <GLES2/gl2ext.h> |
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static PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR; |
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static PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR; |
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void TextureCameraEGLHelper::EGLInit() |
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{ |
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eglCreateImageKHR = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>( |
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eglGetProcAddress("eglCreateImageKHR")); |
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eglDestroyImageKHR = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>( |
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eglGetProcAddress("eglDestroyImageKHR")); |
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} |
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EGLImageKHR TextureCameraEGLHelper::EGLCreateImage( |
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std::shared_ptr<Aurora::StreamCamera::GraphicBuffer> buffer) |
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{ |
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auto display = PlatformMethods::GetEGLDisplay(); |
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auto context = PlatformMethods::GetEGLContext(); |
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const void *handle = buffer->handle; |
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GLint eglImgAttrs[] = {EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE, EGL_NONE}; |
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return eglCreateImageKHR(display, |
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context, |
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EGL_NATIVE_BUFFER_ANDROID, |
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(EGLClientBuffer) handle, |
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eglImgAttrs); |
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} |
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void TextureCameraEGLHelper::EGLDestroyImage(EGLImageKHR image) |
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{ |
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auto display = PlatformMethods::GetEGLDisplay(); |
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eglDestroyImageKHR(display, image); |
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} |
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@ -0,0 +1,77 @@
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/**
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* SPDX-FileCopyrightText: Copyright 2023 Open Mobile Platform LLC <community@omp.ru> |
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* SPDX-License-Identifier: BSD-3-Clause |
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*/ |
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#include <camera_aurora/texture_camera_pixels_helper.h> |
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QImage *TextureCameraPixelsHelper::YUVtoARGB(std::shared_ptr<const Aurora::StreamCamera::YCbCrFrame> frame) |
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{ |
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QSize size(frame->width, frame->height); |
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QImage *image = new QImage(size, QImage::Format_RGBA8888); |
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planarYuv420ToArgb(frame->y, |
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frame->cr, |
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frame->cb, |
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frame->yStride, |
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frame->cStride, |
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frame->cStride, |
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frame->chromaStep, |
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reinterpret_cast<quint32 *>(image->bits()), |
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frame->width, |
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frame->height); |
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return image; |
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} |
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quint32 TextureCameraPixelsHelper::yuvToArgb(qint32 y, qint32 rv, qint32 guv, qint32 bu, qint32 a = 255) |
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{ |
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qint32 yy = (y - 16) * 298; |
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return (a << 24) |
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| qBound(0, (yy + rv) >> 8, 255) << 16 |
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| qBound(0, (yy - guv) >> 8, 255) << 8 |
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| qBound(0, (yy + bu) >> 8, 255); |
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} |
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void TextureCameraPixelsHelper::planarYuv420ToArgb(const uchar *y, |
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const uchar *u, |
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const uchar *v, |
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qint32 yStride, |
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qint32 uStride, |
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qint32 vStride, |
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qint32 uvPixelStride, |
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quint32 *rgb, |
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qint32 width, |
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qint32 height) |
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{ |
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quint32 *rgb0 = rgb; |
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quint32 *rgb1 = rgb + width; |
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for (qint32 j = 0; j < height; j += 2) { |
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const uchar *lineY0 = y; |
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const uchar *lineY1 = y + yStride; |
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const uchar *lineU = u; |
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const uchar *lineV = v; |
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for (qint32 i = 0; i < width; i += 2) { |
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const qint32 uu = *lineU - 128; |
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const qint32 vv = *lineV - 128; |
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const qint32 rv = 409 * vv + 128; |
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const qint32 guv = 100 * uu + 208 * vv + 128; |
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const qint32 bu = 516 * uu + 128; |
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lineU += uvPixelStride; |
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lineV += uvPixelStride; |
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*rgb0++ = yuvToArgb(*lineY0++, rv, guv, bu); |
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*rgb0++ = yuvToArgb(*lineY0++, rv, guv, bu); |
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*rgb1++ = yuvToArgb(*lineY1++, rv, guv, bu); |
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*rgb1++ = yuvToArgb(*lineY1++, rv, guv, bu); |
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} |
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y += yStride << 1; |
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u += uStride; |
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v += vStride; |
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rgb0 += width; |
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rgb1 += width; |
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} |
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} |
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@ -1,155 +1,38 @@
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// SPDX-FileCopyrightText: Copyright 2023 Open Mobile Platform LLC <community@omp.ru> |
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// SPDX-License-Identifier: BSD-3-Clause |
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import 'dart:async'; |
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import 'dart:convert'; |
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import 'package:camera_platform_interface/camera_platform_interface.dart'; |
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import 'package:flutter/material.dart'; |
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import 'package:flutter/services.dart'; |
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import 'camera_aurora_method_channel.dart'; |
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import 'camera_aurora_platform_interface.dart'; |
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class CameraAurora extends CameraPlatform { |
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/// Registers this class as the default instance of [CameraPlatform]. |
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static void registerWith() { |
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CameraPlatform.instance = CameraAurora(); |
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enum OrientationEvent { |
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undefined, |
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portrait, |
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landscape, |
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portraitFlipped, |
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landscapeFlipped, |
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} |
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|
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// The stream for vending frames to platform interface clients. |
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StreamController<CameraImageData>? _frameStreamController; |
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/// Completes with a list of available cameras. |
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/// |
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/// This method returns an empty list when no cameras are available. |
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@override |
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Future<List<CameraDescription>> availableCameras() => |
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CameraAuroraPlatform.instance.availableCameras(); |
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class CameraState { |
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CameraState.fromJson(Map<dynamic, dynamic> json) |
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: id = json['id'] ?? "", |
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textureId = json['textureId'] ?? -1, |
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width = (json['width'] ?? 0).toDouble(), |
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height = (json['height'] ?? 0).toDouble(), |
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rotationCamera = json['rotationCamera'] ?? 0, |
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rotationDisplay = json['rotationDisplay'] ?? 0, |
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error = json['error'] ?? ''; |
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|
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/// Creates an uninitialized camera instance and returns the cameraId. |
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@override |
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Future<int> createCamera( |
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CameraDescription cameraDescription, |
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ResolutionPreset? resolutionPreset, { |
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bool enableAudio = false, |
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}) { |
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EventChannel(CameraAuroraEvents.cameraAuroraStreamedFrame.name) |
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.receiveBroadcastStream() |
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.listen((event) { |
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debugPrint(event); |
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}); |
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return CameraAuroraPlatform.instance.createCamera(cameraDescription.name); |
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} |
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final String id; |
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final int textureId; |
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final double width; |
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final double height; |
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final int rotationCamera; |
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final int rotationDisplay; |
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final String error; |
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|
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/// Initializes the camera on the device. |
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/// |
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/// [imageFormatGroup] is used to specify the image formatting used. |
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/// On Android this defaults to ImageFormat.YUV_420_888 and applies only to the imageStream. |
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/// On iOS this defaults to kCVPixelFormatType_32BGRA. |
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/// On Web this parameter is currently not supported. |
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@override |
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Future<void> initializeCamera( |
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int cameraId, { |
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ImageFormatGroup imageFormatGroup = ImageFormatGroup.unknown, |
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}) async { |
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// init |
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} |
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|
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/// Releases the resources of this camera. |
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@override |
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Future<void> dispose(int cameraId) { |
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return CameraAuroraPlatform.instance.dispose(cameraId); |
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} |
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|
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/// Captures an image and returns the file where it was saved. |
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@override |
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Future<XFile> takePicture(int cameraId) => |
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CameraAuroraPlatform.instance.takePicture(cameraId); |
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|
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/// Starts a video recording. |
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/// |
||||
/// The length of the recording can be limited by specifying the [maxVideoDuration]. |
||||
/// By default no maximum duration is specified, |
||||
/// meaning the recording will continue until manually stopped. |
||||
/// With [maxVideoDuration] set the video is returned in a [VideoRecordedEvent] |
||||
/// through the [onVideoRecordedEvent] stream when the set duration is reached. |
||||
/// |
||||
/// This method is deprecated in favour of [startVideoCapturing]. |
||||
@override |
||||
Future<void> startVideoRecording(int cameraId, |
||||
{Duration? maxVideoDuration}) => |
||||
CameraAuroraPlatform.instance.startVideoRecording(cameraId); |
||||
bool isNotEmpty() => textureId != -1; |
||||
|
||||
/// Stops the video recording and returns the file where it was saved. |
||||
@override |
||||
Future<XFile> stopVideoRecording(int cameraId) => |
||||
CameraAuroraPlatform.instance.stopVideoRecording(cameraId); |
||||
|
||||
/// Pause video recording. |
||||
@override |
||||
Future<void> pauseVideoRecording(int cameraId) => |
||||
CameraAuroraPlatform.instance.pauseVideoRecording(cameraId); |
||||
|
||||
/// Resume video recording after pausing. |
||||
@override |
||||
Future<void> resumeVideoRecording(int cameraId) => |
||||
CameraAuroraPlatform.instance.resumeVideoRecording(cameraId); |
||||
|
||||
/// The ui orientation changed. |
||||
/// |
||||
/// Implementations for this: |
||||
/// - Should support all 4 orientations. |
||||
@override |
||||
Stream<DeviceOrientationChangedEvent> onDeviceOrientationChanged() async* { |
||||
yield const DeviceOrientationChangedEvent(DeviceOrientation.portraitUp); |
||||
} |
||||
|
||||
/// The camera has been initialized. |
||||
@override |
||||
Stream<CameraInitializedEvent> onCameraInitialized(int cameraId) async* { |
||||
yield CameraInitializedEvent( |
||||
cameraId, |
||||
// previewWidth |
||||
400, |
||||
// previewHeight |
||||
400, |
||||
// exposureMode |
||||
ExposureMode.auto, |
||||
// exposurePointSupported |
||||
true, |
||||
// focusMode |
||||
FocusMode.auto, |
||||
// focusPointSupported |
||||
true, |
||||
); |
||||
} |
||||
|
||||
@override |
||||
Stream<CameraImageData> onStreamedFrameAvailable( |
||||
int cameraId, { |
||||
CameraImageStreamOptions? options, |
||||
}) { |
||||
_frameStreamController = StreamController<CameraImageData>( |
||||
onListen: () => |
||||
CameraAuroraPlatform.instance.streamedFrame(cameraId).listen((data) { |
||||
_frameStreamController!.add(data); |
||||
}), |
||||
onPause: () => {}, |
||||
onResume: () => {}, |
||||
onCancel: () => {}, |
||||
); |
||||
return _frameStreamController!.stream; |
||||
} |
||||
bool hasError() => error.isNotEmpty; |
||||
|
||||
/// Returns a widget showing a live camera preview. |
||||
@override |
||||
Widget buildPreview(int cameraId) { |
||||
return Center( |
||||
child: Text( |
||||
'Camera: $cameraId', |
||||
style: |
||||
const TextStyle(fontWeight: FontWeight.bold, color: Colors.white), |
||||
), |
||||
); |
||||
String toString() { |
||||
return '{id: $id, textureId: $textureId, width: $width, height: $height, rotationCamera: $rotationCamera, rotationDisplay: $rotationDisplay, error: $error}'; |
||||
} |
||||
} |
||||
|
||||
@ -1,155 +1,103 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2023 Open Mobile Platform LLC <community@omp.ru> |
||||
// SPDX-License-Identifier: BSD-3-Clause |
||||
import 'dart:async'; |
||||
import 'dart:convert'; |
||||
|
||||
import 'package:camera_platform_interface/camera_platform_interface.dart'; |
||||
import 'package:camera_aurora/camera_aurora_platform_interface.dart'; |
||||
import 'package:flutter/material.dart'; |
||||
import 'package:flutter/services.dart'; |
||||
|
||||
import 'camera_aurora_method_channel.dart'; |
||||
import 'camera_aurora_platform_interface.dart'; |
||||
|
||||
class CameraAurora extends CameraPlatform { |
||||
/// Registers this class as the default instance of [CameraPlatform]. |
||||
static void registerWith() { |
||||
CameraPlatform.instance = CameraAurora(); |
||||
} |
||||
import 'camera_data.dart'; |
||||
|
||||
// The stream for vending frames to platform interface clients. |
||||
StreamController<CameraImageData>? _frameStreamController; |
||||
|
||||
/// Completes with a list of available cameras. |
||||
/// |
||||
/// This method returns an empty list when no cameras are available. |
||||
@override |
||||
Future<List<CameraDescription>> availableCameras() => |
||||
CameraAuroraPlatform.instance.availableCameras(); |
||||
|
||||
/// Creates an uninitialized camera instance and returns the cameraId. |
||||
@override |
||||
Future<int> createCamera( |
||||
CameraDescription cameraDescription, |
||||
ResolutionPreset? resolutionPreset, { |
||||
bool enableAudio = false, |
||||
}) { |
||||
EventChannel(CameraAuroraEvents.cameraAuroraStreamedFrame.name) |
||||
.receiveBroadcastStream() |
||||
.listen((event) { |
||||
debugPrint(event); |
||||
class CameraViewfinder extends StatefulWidget { |
||||
const CameraViewfinder({ |
||||
super.key, |
||||
required this.width, |
||||
required this.height, |
||||
}); |
||||
return CameraAuroraPlatform.instance.createCamera(cameraDescription.name); |
||||
} |
||||
|
||||
/// Initializes the camera on the device. |
||||
/// |
||||
/// [imageFormatGroup] is used to specify the image formatting used. |
||||
/// On Android this defaults to ImageFormat.YUV_420_888 and applies only to the imageStream. |
||||
/// On iOS this defaults to kCVPixelFormatType_32BGRA. |
||||
/// On Web this parameter is currently not supported. |
||||
@override |
||||
Future<void> initializeCamera( |
||||
int cameraId, { |
||||
ImageFormatGroup imageFormatGroup = ImageFormatGroup.unknown, |
||||
}) async { |
||||
// init |
||||
} |
||||
final double width; |
||||
final double height; |
||||
|
||||
/// Releases the resources of this camera. |
||||
@override |
||||
Future<void> dispose(int cameraId) { |
||||
return CameraAuroraPlatform.instance.dispose(cameraId); |
||||
State<CameraViewfinder> createState() => _CameraViewfinderState(); |
||||
} |
||||
|
||||
/// Captures an image and returns the file where it was saved. |
||||
@override |
||||
Future<XFile> takePicture(int cameraId) => |
||||
CameraAuroraPlatform.instance.takePicture(cameraId); |
||||
|
||||
/// Starts a video recording. |
||||
/// |
||||
/// The length of the recording can be limited by specifying the [maxVideoDuration]. |
||||
/// By default no maximum duration is specified, |
||||
/// meaning the recording will continue until manually stopped. |
||||
/// With [maxVideoDuration] set the video is returned in a [VideoRecordedEvent] |
||||
/// through the [onVideoRecordedEvent] stream when the set duration is reached. |
||||
/// |
||||
/// This method is deprecated in favour of [startVideoCapturing]. |
||||
@override |
||||
Future<void> startVideoRecording(int cameraId, |
||||
{Duration? maxVideoDuration}) => |
||||
CameraAuroraPlatform.instance.startVideoRecording(cameraId); |
||||
|
||||
/// Stops the video recording and returns the file where it was saved. |
||||
@override |
||||
Future<XFile> stopVideoRecording(int cameraId) => |
||||
CameraAuroraPlatform.instance.stopVideoRecording(cameraId); |
||||
|
||||
/// Pause video recording. |
||||
@override |
||||
Future<void> pauseVideoRecording(int cameraId) => |
||||
CameraAuroraPlatform.instance.pauseVideoRecording(cameraId); |
||||
|
||||
/// Resume video recording after pausing. |
||||
@override |
||||
Future<void> resumeVideoRecording(int cameraId) => |
||||
CameraAuroraPlatform.instance.resumeVideoRecording(cameraId); |
||||
class _CameraViewfinderState extends State<CameraViewfinder> { |
||||
CameraState _cameraState = CameraState.fromJson({}); |
||||
|
||||
/// The ui orientation changed. |
||||
/// |
||||
/// Implementations for this: |
||||
/// - Should support all 4 orientations. |
||||
@override |
||||
Stream<DeviceOrientationChangedEvent> onDeviceOrientationChanged() async* { |
||||
yield const DeviceOrientationChangedEvent(DeviceOrientation.portraitUp); |
||||
initState() { |
||||
super.initState(); |
||||
CameraAuroraPlatform.instance.startCapture(widget.width, widget.height); |
||||
CameraAuroraPlatform.instance.onChangeState().listen((event) { |
||||
if (mounted) { |
||||
setState(() { |
||||
debugPrint(_cameraState.toString()); |
||||
_cameraState = event; |
||||
}); |
||||
} |
||||
|
||||
/// The camera has been initialized. |
||||
@override |
||||
Stream<CameraInitializedEvent> onCameraInitialized(int cameraId) async* { |
||||
yield CameraInitializedEvent( |
||||
cameraId, |
||||
// previewWidth |
||||
400, |
||||
// previewHeight |
||||
400, |
||||
// exposureMode |
||||
ExposureMode.auto, |
||||
// exposurePointSupported |
||||
true, |
||||
// focusMode |
||||
FocusMode.auto, |
||||
// focusPointSupported |
||||
true, |
||||
); |
||||
}); |
||||
} |
||||
|
||||
@override |
||||
Stream<CameraImageData> onStreamedFrameAvailable( |
||||
int cameraId, { |
||||
CameraImageStreamOptions? options, |
||||
}) { |
||||
_frameStreamController = StreamController<CameraImageData>( |
||||
onListen: () => |
||||
CameraAuroraPlatform.instance.streamedFrame(cameraId).listen((data) { |
||||
_frameStreamController!.add(data); |
||||
}), |
||||
onPause: () => {}, |
||||
onResume: () => {}, |
||||
onCancel: () => {}, |
||||
); |
||||
return _frameStreamController!.stream; |
||||
void dispose() { |
||||
super.dispose(); |
||||
CameraAuroraPlatform.instance.stopCapture(); |
||||
} |
||||
|
||||
/// Returns a widget showing a live camera preview. |
||||
@override |
||||
Widget buildPreview(int cameraId) { |
||||
Widget build(BuildContext context) { |
||||
if (_cameraState.hasError()) { |
||||
return Center( |
||||
child: Text( |
||||
'Camera: $cameraId', |
||||
'Error: ${_cameraState.error}', |
||||
style: |
||||
const TextStyle(fontWeight: FontWeight.bold, color: Colors.white), |
||||
), |
||||
); |
||||
} else if (_cameraState.isNotEmpty()) { |
||||
int turn = 0; |
||||
|
||||
switch (_cameraState.rotationDisplay) { |
||||
case 0: |
||||
turn = _cameraState.id.contains('front') ? -1 : 1; |
||||
break; |
||||
case 90: |
||||
turn = 0; |
||||
break; |
||||
case 180: |
||||
turn = _cameraState.id.contains('front') ? 1 : -1; |
||||
break; |
||||
default: // 270 |
||||
turn = 2; |
||||
} |
||||
|
||||
double height = 10; |
||||
double width = 10; |
||||
|
||||
// widget.width = widget.height |
||||
// _cameraState.height = _cameraState.width |
||||
|
||||
if (_cameraState.height != 0 && _cameraState.width != 0) { |
||||
if (_cameraState.rotationDisplay == 90 || |
||||
_cameraState.rotationDisplay == 270) { |
||||
width = widget.width * _cameraState.height / _cameraState.width; |
||||
height = widget.height * _cameraState.width / _cameraState.height; |
||||
} else { |
||||
width = _cameraState.height * widget.height / _cameraState.width; |
||||
height = _cameraState.width * widget.width / _cameraState.height; |
||||
} |
||||
} |
||||
|
||||
return RotatedBox( |
||||
quarterTurns: turn, |
||||
child: SizedBox( |
||||
width: height, // height |
||||
height: width, // widht |
||||
child: Opacity( |
||||
opacity: _cameraState.height == 0 ? 0 : 1, |
||||
child: Texture(textureId: _cameraState.textureId), |
||||
), |
||||
), |
||||
); |
||||
} |
||||
return const SizedBox.shrink(); |
||||
} |
||||
} |
||||
|
||||
@ -1,43 +0,0 @@
|
||||
import 'dart:typed_data'; |
||||
|
||||
import 'package:camera_platform_interface/camera_platform_interface.dart'; |
||||
|
||||
CameraImageData cameraImageFromPlatformData(Map<dynamic, dynamic> data) { |
||||
return CameraImageData( |
||||
format: _cameraImageFormatFromPlatformData(data['format']), |
||||
height: data['height'] as int, |
||||
width: data['width'] as int, |
||||
lensAperture: data['lensAperture'] as double?, |
||||
sensorExposureTime: data['sensorExposureTime'] as int?, |
||||
sensorSensitivity: data['sensorSensitivity'] as double?, |
||||
planes: List<CameraImagePlane>.unmodifiable( |
||||
(data['planes'] as List<dynamic>).map<CameraImagePlane>( |
||||
(dynamic planeData) => _cameraImagePlaneFromPlatformData( |
||||
planeData as Map<dynamic, dynamic>)))); |
||||
} |
||||
|
||||
CameraImageFormat _cameraImageFormatFromPlatformData(dynamic data) { |
||||
return CameraImageFormat(_imageFormatGroupFromPlatformData(data), raw: data); |
||||
} |
||||
|
||||
ImageFormatGroup _imageFormatGroupFromPlatformData(dynamic data) { |
||||
switch (data) { |
||||
case 35: // android.graphics.ImageFormat.YUV_420_888 |
||||
return ImageFormatGroup.yuv420; |
||||
case 256: // android.graphics.ImageFormat.JPEG |
||||
return ImageFormatGroup.jpeg; |
||||
case 17: // android.graphics.ImageFormat.NV21 |
||||
return ImageFormatGroup.nv21; |
||||
} |
||||
|
||||
return ImageFormatGroup.unknown; |
||||
} |
||||
|
||||
CameraImagePlane _cameraImagePlaneFromPlatformData(Map<dynamic, dynamic> data) { |
||||
return CameraImagePlane( |
||||
bytes: data['bytes'] as Uint8List, |
||||
bytesPerPixel: data['bytesPerPixel'] as int?, |
||||
bytesPerRow: data['bytesPerRow'] as int, |
||||
height: data['height'] as int?, |
||||
width: data['width'] as int?); |
||||
} |
||||
Loading…
Reference in new issue