Example usage for android.hardware Camera getNumberOfCameras

Introduction

In this page you can find the example usage for android.hardware Camera getNumberOfCameras.

Prototype

public native static int getNumberOfCameras();

Source Link

Document

Returns the number of physical cameras available on this device.

Usage

From source file:Main.java

/**
 * @param position Physical position of the camera i.e Camera.CameraInfo.CAMERA_FACING_FRONT
 *                 or Camera.CameraInfo.CAMERA_FACING_BACK.
 * @return the default camera id/*from  w w  w. ja  v  a2  s . c  o m*/
 */
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
private static int getDefaultCameraId(int position) {
    // Find the total number of cameras available
    int mNumberOfCameras = Camera.getNumberOfCameras();

    // Find the ID of the back-facing ("default") camera
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    for (int i = 0; i < mNumberOfCameras; ++i) {
        Camera.getCameraInfo(i, cameraInfo);
        if (cameraInfo.facing == position)
            return i;
    }

    return -1;
}

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From source file:Main.java

/**
 * @param position Physical position of the camera i.e Camera.CameraInfo.CAMERA_FACING_FRONT
 *                 or Camera.CameraInfo.CAMERA_FACING_BACK.
 * @return the default camera id/*from   w  w  w.ja v a  2 s .  c  om*/
 */
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
private static int getDefaultCameraId(int position) {
    // Find the total number of cameras available
    int mNumberOfCameras = Camera.getNumberOfCameras();

    // Find the ID of the back-facing ("default") camera
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    for (int i = 0; i < mNumberOfCameras; i++) {
        Camera.getCameraInfo(i, cameraInfo);
        if (cameraInfo.facing == position) {
            return i;

        }
    }
    return -1;
}

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From source file:Main.java

/**
 * @param position Physical position of the camera i.e Camera.CameraInfo.CAMERA_FACING_FRONT
 *                 or Camera.CameraInfo.CAMERA_FACING_BACK.
 * @return the default camera on the device. Returns null if camera is not available.
 */// ww  w .j av a  2 s .com
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
private static int getDefaultCamera(int position) {
    // Find the total number of cameras available
    int mNumberOfCameras = Camera.getNumberOfCameras();

    // Find the ID of the back-facing ("default") camera
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    for (int i = 0; i < mNumberOfCameras; i++) {
        Camera.getCameraInfo(i, cameraInfo);
        if (cameraInfo.facing == position) {
            return i;

        }
    }

    return 0;
}

---

From source file:Main.java

/**
 * @param position Physical position of the camera i.e Camera.CameraInfo.CAMERA_FACING_FRONT
 *                 or Camera.CameraInfo.CAMERA_FACING_BACK.
 * @return the default camera on the device. Returns null if camera is not available.
 *///from  w  w w  . j  a v  a  2 s .  c o  m
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
private static Camera getDefaultCamera(int position) {
    // Find the total number of cameras available
    int mNumberOfCameras = Camera.getNumberOfCameras();

    // Find the ID of the back-facing ("default") camera
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    for (int i = 0; i < mNumberOfCameras; ++i) {
        Camera.getCameraInfo(i, cameraInfo);
        if (cameraInfo.facing == position)
            return Camera.open(i);
    }

    return null;
}

---

From source file:Main.java

/**
 * @param position Physical position of the camera i.e Camera.CameraInfo.CAMERA_FACING_FRONT
 *                 or Camera.CameraInfo.CAMERA_FACING_BACK.
 * @return the default camera on the device. Returns null if camera is not available.
 *//*from  ww  w.j av  a 2 s.  c  o  m*/
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
public static Camera getDefaultCamera(int position) {
    // Find the total number of cameras available
    int mNumberOfCameras = Camera.getNumberOfCameras();

    // Find the ID of the back-facing ("default") camera
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    for (int i = 0; i < mNumberOfCameras; i++) {
        Camera.getCameraInfo(i, cameraInfo);
        if (cameraInfo.facing == position) {
            try {
                return Camera.open(i);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    return null;
}

---

From source file:Main.java

/**
 *
 * @param position Physical position of the camera i.e Camera.CameraInfo.CAMERA_FACING_FRONT
 *                 or Camera.CameraInfo.CAMERA_FACING_BACK.
 * @return the default camera on the device. Returns null if camera is not available.
 *//* w  w w  . ja  va2 s. c om*/
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
private static Camera getDefaultCamera(int position) {
    // Find the total number of cameras available
    int mNumberOfCameras = Camera.getNumberOfCameras();

    // Find the ID of the back-facing ("default") camera
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    for (int i = 0; i < mNumberOfCameras; i++) {
        Camera.getCameraInfo(i, cameraInfo);
        if (cameraInfo.facing == position) {
            return Camera.open(i);

        }
    }

    return null;
}

---

From source file:Main.java

/**
 *
 * @param position Physical position of the camera i.e Camera.CameraInfo.CAMERA_FACING_FRONT
 *                 or Camera.CameraInfo.CAMERA_FACING_BACK.
 * @return the default camera on the device. Returns null if camera is not available.
 *//*from w  ww . jav  a 2  s.  com*/
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
private static Camera getDefaultCamera(int position) {
    // Find the total number of cameras available
    int mNumberOfCameras = Camera.getNumberOfCameras();

    Log.d(TAG, "getDefaultCamera number:" + mNumberOfCameras + " position:" + position);

    // Find the ID of the back-facing ("default") camera
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    for (int i = 0; i < mNumberOfCameras; i++) {
        Camera.getCameraInfo(i, cameraInfo);
        if (cameraInfo.facing == position) {
            return Camera.open(i);

        }
    }

    return null;
}

---

From source file:Main.java

public static int getDefaultCameraId(int position) {
    int mNumberOfCameras = Camera.getNumberOfCameras();

    // Find the ID of the back-facing ("default") camera
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    for (int i = 0; i < mNumberOfCameras; i++) {
        Camera.getCameraInfo(i, cameraInfo);
        if (cameraInfo.facing == position) {
            return i;

        }/*from  w ww.j  a  v  a 2  s .  co m*/
    }
    return -1;
}

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From source file:org.webrtc.videoengine.VideoCaptureDeviceInfoAndroid.java

private static String getDeviceInfo() {
    try {//from   w w w. j  av  a  2s  .c o m
        JSONArray devices = new JSONArray();
        for (int i = 0; i < Camera.getNumberOfCameras(); ++i) {
            CameraInfo info = new CameraInfo();
            Camera.getCameraInfo(i, info);
            String uniqueName = deviceUniqueName(i, info);
            JSONObject cameraDict = new JSONObject();
            devices.put(cameraDict);
            List<Size> supportedSizes;
            List<int[]> supportedFpsRanges;
            Camera camera = null;
            try {
                camera = Camera.open(i);
                Parameters parameters = camera.getParameters();
                supportedSizes = parameters.getSupportedPreviewSizes();
                supportedFpsRanges = parameters.getSupportedPreviewFpsRange();
                Log.d(TAG, uniqueName);
            } catch (RuntimeException e) {
                Log.e(TAG, "Failed to open " + uniqueName + ", skipping", e);
                continue;
            } finally {
                if (camera != null) {
                    camera.release();
                }
            }

            JSONArray sizes = new JSONArray();
            for (Size supportedSize : supportedSizes) {
                JSONObject size = new JSONObject();
                size.put("width", supportedSize.width);
                size.put("height", supportedSize.height);
                sizes.put(size);
            }

            JSONArray mfpsRanges = new JSONArray();
            for (int[] range : supportedFpsRanges) {
                JSONObject mfpsRange = new JSONObject();
                // Android SDK deals in integral "milliframes per second"
                // (i.e. fps*1000, instead of floating-point frames-per-second) so we
                // preserve that through the Java->C++->Java round-trip.
                mfpsRange.put("min_mfps", range[Parameters.PREVIEW_FPS_MIN_INDEX]);
                mfpsRange.put("max_mfps", range[Parameters.PREVIEW_FPS_MAX_INDEX]);
                mfpsRanges.put(mfpsRange);
            }

            cameraDict.put("name", uniqueName);
            cameraDict.put("front_facing", isFrontFacing(info)).put("orientation", info.orientation)
                    .put("sizes", sizes).put("mfpsRanges", mfpsRanges);
        }
        String ret = devices.toString(2);
        Log.d(TAG, ret);
        return ret;
    } catch (JSONException e) {
        throw new RuntimeException(e);
    }
}

---

From source file:ac.blitz.acme.video.VideoCaptureDeviceInfoAndroid.java

private static String getDeviceInfo() {
    try {//from  ww w .j av  a  2s.  c  o m
        JSONArray devices = new JSONArray();
        for (int i = 0; i < Camera.getNumberOfCameras(); ++i) {
            CameraInfo info = new CameraInfo();
            Camera.getCameraInfo(i, info);
            String uniqueName = deviceUniqueName(i, info);
            JSONObject cameraDict = new JSONObject();
            devices.put(cameraDict);
            List<Size> supportedSizes;
            List<int[]> supportedFpsRanges;
            try {
                Camera camera = Camera.open(i);
                Parameters parameters = camera.getParameters();
                supportedSizes = parameters.getSupportedPreviewSizes();
                supportedFpsRanges = parameters.getSupportedPreviewFpsRange();
                camera.release();
                Log.d(TAG, uniqueName);
            } catch (RuntimeException e) {
                Log.e(TAG, "Failed to open " + uniqueName + ", skipping");
                continue;
            }
            JSONArray sizes = new JSONArray();
            for (Size supportedSize : supportedSizes) {
                JSONObject size = new JSONObject();
                size.put("width", supportedSize.width);
                size.put("height", supportedSize.height);
                sizes.put(size);
            }
            // Android SDK deals in integral "milliframes per second"
            // (i.e. fps*1000, instead of floating-point frames-per-second) so we
            // preserve that through the Java->C++->Java round-trip.
            int[] mfps = supportedFpsRanges.get(supportedFpsRanges.size() - 1);
            cameraDict.put("name", uniqueName);
            cameraDict.put("front_facing", isFrontFacing(info)).put("orientation", info.orientation)
                    .put("sizes", sizes).put("min_mfps", mfps[Parameters.PREVIEW_FPS_MIN_INDEX])
                    .put("max_mfps", mfps[Parameters.PREVIEW_FPS_MAX_INDEX]);
        }
        String ret = devices.toString(2);
        return ret;
    } catch (JSONException e) {
        throw new RuntimeException(e);
    }
}

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