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https://github.com/gen2brain/cam2ip.git
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Add support for Android, API >= 24, WIP
This commit is contained in:
Milan Nikolic
263
camera/camera_android.go
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263
camera/camera_android.go
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@@ -0,0 +1,263 @@
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// +build android
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// Package camera.
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package camera
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/*
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#include <android/log.h>
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#include <media/NdkImageReader.h>
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#include <camera/NdkCameraDevice.h>
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#include <camera/NdkCameraManager.h>
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#define TAG "camera"
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#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, TAG, __VA_ARGS__)
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#define LOGW(...) __android_log_print(ANDROID_LOG_WARN, TAG, __VA_ARGS__)
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#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, TAG, __VA_ARGS__)
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#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, TAG, __VA_ARGS__)
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AImageReader *imageReader;
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ACameraDevice *cameraDevice;
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ACameraManager *cameraManager;
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ACameraOutputTarget *cameraOutputTarget;
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ACameraCaptureSession *cameraCaptureSession;
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ACaptureRequest *captureRequest;
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ACaptureSessionOutput *captureSessionOutput;
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ACaptureSessionOutputContainer *captureSessionOutputContainer;
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ACameraDevice_StateCallbacks deviceStateCallbacks;
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ACameraCaptureSession_stateCallbacks captureSessionStateCallbacks;
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uint8_t *image_data;
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int image_len = 0;
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void camera_device_on_disconnected(void *context, ACameraDevice *device) {
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LOGI("camera %s is diconnected.\n", ACameraDevice_getId(device));
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}
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void camera_device_on_error(void *context, ACameraDevice *device, int error) {
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LOGE("error %d on camera %s.\n", error, ACameraDevice_getId(device));
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}
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void capture_session_on_ready(void *context, ACameraCaptureSession *session) {
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LOGI("session is ready. %p\n", session);
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}
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void capture_session_on_active(void *context, ACameraCaptureSession *session) {
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LOGI("session is activated. %p\n", session);
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}
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void capture_session_on_closed(void *context, ACameraCaptureSession *session) {
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LOGI("session is closed. %p\n", session);
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}
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void imageCallback(void* context, AImageReader* reader) {
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LOGD("imageCallback");
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AImage *image;
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media_status_t status = AImageReader_acquireNextImage(reader, &image);
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if(status != ACAMERA_OK) {
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LOGE("failed to acquire next image (reason: %d).\n", status);
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return;
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}
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AImage_getPlaneData(image, 0, &image_data, &image_len);
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AImage_delete(image);
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}
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int openCamera(int index, int width, int height) {
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ACameraIdList *cameraIdList;
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const char *selectedCameraId;
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camera_status_t status = ACAMERA_OK;
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ACameraManager *cameraManager = ACameraManager_create();
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status = ACameraManager_getCameraIdList(cameraManager, &cameraIdList);
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if(status != ACAMERA_OK) {
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LOGE("failed to get camera id list (reason: %d).\n", status);
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return status;
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}
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if(cameraIdList->numCameras < 1) {
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LOGE("no camera device detected.\n");
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}
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if(cameraIdList->numCameras < index+1) {
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LOGE("no camera at index %d.\n", index);
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}
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selectedCameraId = cameraIdList->cameraIds[index];
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LOGI("open camera (id: %s, num of cameras: %d).\n", selectedCameraId, cameraIdList->numCameras);
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deviceStateCallbacks.onDisconnected = camera_device_on_disconnected;
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deviceStateCallbacks.onError = camera_device_on_error;
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status = ACameraManager_openCamera(cameraManager, selectedCameraId, &deviceStateCallbacks, &cameraDevice);
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if(status != ACAMERA_OK) {
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LOGE("failed to open camera device (id: %s)\n", selectedCameraId);
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return status;
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}
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status = ACameraDevice_createCaptureRequest(cameraDevice, TEMPLATE_VIDEO_SNAPSHOT, &captureRequest);
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if(status != ACAMERA_OK) {
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LOGE("failed to create snapshot capture request (id: %s)\n", selectedCameraId);
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return status;
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}
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ACaptureSessionOutputContainer_create(&captureSessionOutputContainer);
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captureSessionStateCallbacks.onReady = capture_session_on_ready;
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captureSessionStateCallbacks.onActive = capture_session_on_active;
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captureSessionStateCallbacks.onClosed = capture_session_on_closed;
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media_status_t mstatus = AImageReader_new(width, height, AIMAGE_FORMAT_RGBA_8888, 1, &imageReader);
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if(mstatus != ACAMERA_OK) {
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LOGE("failed to create image reader (reason: %d).\n", status);
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return mstatus;
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}
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AImageReader_ImageListener listener = {
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.context = NULL,
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.onImageAvailable = imageCallback,
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};
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AImageReader_setImageListener(imageReader, &listener);
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ANativeWindow *nativeWindow;
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AImageReader_getWindow(imageReader, &nativeWindow);
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ANativeWindow_acquire(nativeWindow);
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ACameraOutputTarget_create(nativeWindow, &cameraOutputTarget);
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ACaptureRequest_addTarget(captureRequest, cameraOutputTarget);
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ACaptureSessionOutput_create(nativeWindow, &captureSessionOutput);
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ACameraDevice_createCaptureSession(cameraDevice, captureSessionOutputContainer, &captureSessionStateCallbacks, &cameraCaptureSession);
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ACameraManager_deleteCameraIdList(cameraIdList);
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ACameraManager_delete(cameraManager);
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return ACAMERA_OK;
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}
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int captureCamera() {
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camera_status_t status = ACameraCaptureSession_capture(cameraCaptureSession, NULL, 1, &captureRequest, NULL);
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if(status != ACAMERA_OK) {
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LOGE("failed to capture image (reason: %d).\n", status);
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}
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return status;
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}
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void closeCamera() {
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camera_status_t status = ACAMERA_OK;
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if(captureRequest != NULL) {
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ACaptureRequest_free(captureRequest);
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captureRequest = NULL;
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}
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if(cameraOutputTarget != NULL) {
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ACameraOutputTarget_free(cameraOutputTarget);
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cameraOutputTarget = NULL;
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}
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if(cameraDevice != NULL) {
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status = ACameraDevice_close(cameraDevice);
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if(status != ACAMERA_OK) {
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LOGE("failed to close camera device.\n");
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}
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cameraDevice = NULL;
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}
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if(captureSessionOutput != NULL) {
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ACaptureSessionOutput_free(captureSessionOutput);
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captureSessionOutput = NULL;
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}
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if(captureSessionOutputContainer != NULL) {
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ACaptureSessionOutputContainer_free(captureSessionOutputContainer);
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captureSessionOutputContainer = NULL;
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}
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if(imageReader != NULL) {
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AImageReader_delete(imageReader);
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imageReader = NULL;
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}
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LOGI("camera closed.\n");
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}
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int openCamera(int index, int width, int height);
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int captureCamera();
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void closeCamera();
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#cgo android CFLAGS: -D__ANDROID_API__=24
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#cgo android LDFLAGS: -lcamera2ndk -lmediandk -llog -landroid
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*/
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import "C"
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import (
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"fmt"
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"image"
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"unsafe"
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)
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// Camera represents camera.
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type Camera struct {
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opts Options
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img *image.RGBA
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}
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// New returns new Camera for given camera index.
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func New(opts Options) (camera *Camera, err error) {
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camera = &Camera{}
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camera.opts = opts
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camera.img = image.NewRGBA(image.Rect(0, 0, int(opts.Width), int(opts.Height)))
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ret := C.openCamera(C.int(opts.Index), C.int(opts.Width), C.int(opts.Height))
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if bool(int(ret) != 0) {
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err = fmt.Errorf("camera: can not open camera %d: error %d", opts.Index, int(ret))
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return
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}
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return
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}
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// Read reads next frame from camera and returns image.
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func (c *Camera) Read() (img image.Image, err error) {
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ret := C.captureCamera()
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if bool(int(ret) != 0) {
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err = fmt.Errorf("camera: can not grab frame: error %d", int(ret))
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return
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}
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if C.image_data != nil {
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c.img.Pix = (*[1 << 24]uint8)(unsafe.Pointer(&C.image_data))[0:int(C.image_len)]
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img = c.img
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}
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return
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}
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// GetProperty returns the specified camera property.
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func (c *Camera) GetProperty(id int) float64 {
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return 0
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}
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// SetProperty sets a camera property.
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func (c *Camera) SetProperty(id int, value float64) {
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}
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// Close closes camera.
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func (c *Camera) Close() (err error) {
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C.closeCamera()
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return
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}
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@@ -1,4 +1,4 @@
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// +build !cv2,!cv4
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// +build !cv2,!cv4,!android
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package camera
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@@ -1,4 +1,4 @@
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// +build !cv2,!cv4
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// +build !cv2,!cv4,!android
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// Package camera.
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package camera
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@@ -6,6 +6,7 @@ MINGW64="/usr/x86_64-w64-mingw32"
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RPI="/usr/armv6j-hardfloat-linux-gnueabi"
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RPI3="/usr/armv7a-hardfloat-linux-gnueabi"
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APPLE="/usr/x86_64-apple-darwin14"
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ANDROID="/usr/arm-linux-androideabi"
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mkdir -p build
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@@ -101,3 +102,10 @@ CGO_LDFLAGS="-L$APPLE/SDK/MacOSX10.10.sdk/usr/lib -mmacosx-version-min=10.10" \
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CGO_CFLAGS="-I$APPLE/SDK/MacOSX10.10.sdk/usr/include -mmacosx-version-min=10.10" \
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CC="$APPLE/bin/x86_64-apple-darwin14-clang" CXX="$APPLE/bin/x86_64-apple-darwin14-clang++" \
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CGO_ENABLED=1 GOOS=darwin GOARCH=amd64 go build -tags cv2 -o build/cam2ip.darwin.amd64 -ldflags "-linkmode external -s -w '-extldflags=-mmacosx-version-min=10.10'" github.com/gen2brain/cam2ip/cmd/cam2ip
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PKG_CONFIG_PATH="$ANDROID/lib/pkgconfig" \
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PKG_CONFIG_LIBDIR="$ANDROID/lib/pkgconfig" \
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CGO_LDFLAGS="-L$ANDROID/sysroot/usr/lib" \
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CGO_CFLAGS="-I$ANDROID/sysroot/usr/include --sysroot=$ANDROID/sysroot" \
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CC="$ANDROID/bin/arm-linux-androideabi-clang" CXX="$ANDROID/bin/arm-linux-androideabi-clang++" \
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CGO_ENABLED=1 GOOS=android GOARCH=arm go build -tags jpeg -o build/cam2ip.android.arm7 -ldflags "-linkmode external -s -w" github.com/gen2brain/cam2ip/cmd/cam2ip
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