打开相机

    /**
     * open Camera
     */
    void doOpenCamera(CameraOpenOverCallback callback) {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
            if (!CheckPermission.isCameraUseable(SELECTED_CAMERA) && this.errorLisenter != null) {
                this.errorLisenter.onError();
                return;
            }
        }
        if (mCamera == null) {
            openCamera(SELECTED_CAMERA);
        }
        callback.cameraHasOpened();
    }
    private synchronized void openCamera(int id) {
        try {
            this.mCamera = Camera.open(id);
        } catch (Exception var3) {
            var3.printStackTrace();
            if (this.errorLisenter != null) {
                this.errorLisenter.onError();
            }
        }

        if (Build.VERSION.SDK_INT > 17 && this.mCamera != null) {
            try {
                this.mCamera.enableShutterSound(false);
            } catch (Exception e) {
                e.printStackTrace();
                Log.e("CJT", "enable shutter sound faild");
            }
        }
    }

添加预览

/**
     * doStartPreview
     */
    public void doStartPreview(SurfaceHolder holder, float screenProp) {
        if (isPreviewing) {
            LogUtil.i("doStartPreview isPreviewing");
        }
        if (this.screenProp < 0) {
            this.screenProp = screenProp;
        }
        if (holder == null) {
            return;
        }
        this.mHolder = holder;
        if (mCamera != null) {
            try {
                mParams = mCamera.getParameters();
                Camera.Size previewSize = CameraParamUtil.getInstance().getPreviewSize(mParams
                        .getSupportedPreviewSizes(), 1000, screenProp);
                Camera.Size pictureSize = CameraParamUtil.getInstance().getPictureSize(mParams
                        .getSupportedPictureSizes(), 1200, screenProp);

                mParams.setPreviewSize(previewSize.width, previewSize.height);

                preview_width = previewSize.width;
                preview_height = previewSize.height;

                mParams.setPictureSize(pictureSize.width, pictureSize.height);

                if (CameraParamUtil.getInstance().isSupportedFocusMode(
                        mParams.getSupportedFocusModes(),
                        Camera.Parameters.FOCUS_MODE_AUTO)) {
                    mParams.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
                }
                if (CameraParamUtil.getInstance().isSupportedPictureFormats(mParams.getSupportedPictureFormats(),
                        ImageFormat.JPEG)) {
                    mParams.setPictureFormat(ImageFormat.JPEG);
                    mParams.setJpegQuality(100);
                }
                mCamera.setParameters(mParams);
                mParams = mCamera.getParameters();
                mCamera.setPreviewDisplay(holder);  //SurfaceView
                mCamera.setDisplayOrientation(cameraAngle);//浏览角度
                mCamera.setPreviewCallback(this); //每一帧回调
                mCamera.startPreview();//启动浏览
                isPreviewing = true;
                Log.i(TAG, "=== Start Preview ===");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

停止预览

    /**
     * 停止预览
     */
    public void doStopPreview() {
        if (null != mCamera) {
            try {
                mCamera.setPreviewCallback(null);
                mCamera.stopPreview();
                //这句要在stopPreview后执行，不然会卡顿或者花屏
                mCamera.setPreviewDisplay(null);
                isPreviewing = false;
                Log.i(TAG, "=== Stop Preview ===");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

销毁Camera

/**
     * 销毁Camera
     */
    void doDestroyCamera() {
        errorLisenter = null;
        if (null != mCamera) {
            try {
                mCamera.setPreviewCallback(null);
                mSwitchView = null;
                mFlashLamp = null;
                mCamera.stopPreview();
                //这句要在stopPreview后执行，不然会卡顿或者花屏
                mCamera.setPreviewDisplay(null);
                mHolder = null;
                isPreviewing = false;
                mCamera.release();
                mCamera = null;
//                destroyCameraInterface();
                Log.i(TAG, "=== Destroy Camera ===");
            } catch (IOException e) {
                e.printStackTrace();
            }
        } else {
            Log.i(TAG, "=== Camera  Null===");
        }
    }

拍照

    /**
     * 拍照
     */
    private int nowAngle;

    public void takePicture(final TakePictureCallback callback) {
        if (mCamera == null) {
            return;
        }
        switch (cameraAngle) {
            case 90:
                nowAngle = Math.abs(angle + cameraAngle) % 360;
                break;
            case 270:
                nowAngle = Math.abs(cameraAngle - angle);
                break;
        }
//
        Log.i("CJT", angle + " = " + cameraAngle + " = " + nowAngle);
        mCamera.takePicture(null, null, new Camera.PictureCallback() {
            @Override
            public void onPictureTaken(byte[] data, Camera camera) {
                Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
                Matrix matrix = new Matrix();
                if (SELECTED_CAMERA == CAMERA_POST_POSITION) {
                    matrix.setRotate(nowAngle);
                } else if (SELECTED_CAMERA == CAMERA_FRONT_POSITION) {
                    matrix.setRotate(360 - nowAngle);
                    matrix.postScale(-1, 1);
                }

                bitmap = createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
                if (callback != null) {
                    if (nowAngle == 90 || nowAngle == 270) {
                        callback.captureResult(bitmap, true);
                    } else {
                        callback.captureResult(bitmap, false);
                    }
                }
            }
        });
    }

启动录像

    //启动录像
    public void startRecord(Surface surface, float screenProp, ErrorCallback callback) {
        mCamera.setPreviewCallback(null);
        final int nowAngle = (angle + 90) % 360;
        //获取第一帧图片
        Camera.Parameters parameters = mCamera.getParameters();
        int width = parameters.getPreviewSize().width;
        int height = parameters.getPreviewSize().height;
        YuvImage yuv = new YuvImage(firstFrame_data, parameters.getPreviewFormat(), width, height, null);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        yuv.compressToJpeg(new Rect(0, 0, width, height), 50, out);
        byte[] bytes = out.toByteArray();
        videoFirstFrame = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
        Matrix matrix = new Matrix();
        if (SELECTED_CAMERA == CAMERA_POST_POSITION) {
            matrix.setRotate(nowAngle);
        } else if (SELECTED_CAMERA == CAMERA_FRONT_POSITION) {
            matrix.setRotate(270);
        }
        videoFirstFrame = createBitmap(videoFirstFrame, 0, 0, videoFirstFrame.getWidth(), videoFirstFrame
                .getHeight(), matrix, true);

        if (isRecorder) {
            return;
        }
        if (mCamera == null) {
            openCamera(SELECTED_CAMERA);
        }
        if (mediaRecorder == null) {
            mediaRecorder = new MediaRecorder();
        }
        if (mParams == null) {
            mParams = mCamera.getParameters();
        }
        List<String> focusModes = mParams.getSupportedFocusModes();
        if (focusModes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
            mParams.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
        }
        mCamera.setParameters(mParams);
        mCamera.unlock();
        mediaRecorder.reset();
        mediaRecorder.setCamera(mCamera);
        mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

        mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);

        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
        mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
        mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);


        Camera.Size videoSize;
        if (mParams.getSupportedVideoSizes() == null) {
            videoSize = CameraParamUtil.getInstance().getPreviewSize(mParams.getSupportedPreviewSizes(), 600,
                    screenProp);
        } else {
            videoSize = CameraParamUtil.getInstance().getPreviewSize(mParams.getSupportedVideoSizes(), 600,
                    screenProp);
        }
        Log.i(TAG, "setVideoSize    width = " + videoSize.width + "height = " + videoSize.height);
        if (videoSize.width == videoSize.height) {
            mediaRecorder.setVideoSize(preview_width, preview_height);
        } else {
            mediaRecorder.setVideoSize(videoSize.width, videoSize.height);
        }
//        if (SELECTED_CAMERA == CAMERA_FRONT_POSITION) {
//            mediaRecorder.setOrientationHint(270);
//        } else {
//            mediaRecorder.setOrientationHint(nowAngle);
////            mediaRecorder.setOrientationHint(90);
//        }

        if (SELECTED_CAMERA == CAMERA_FRONT_POSITION) {
            //手机预览倒立的处理
            if (cameraAngle == 270) {
                //横屏
                if (nowAngle == 0) {
                    mediaRecorder.setOrientationHint(180);
                } else if (nowAngle == 270) {
                    mediaRecorder.setOrientationHint(270);
                } else {
                    mediaRecorder.setOrientationHint(90);
                }
            } else {
                if (nowAngle == 90) {
                    mediaRecorder.setOrientationHint(270);
                } else if (nowAngle == 270) {
                    mediaRecorder.setOrientationHint(90);
                } else {
                    mediaRecorder.setOrientationHint(nowAngle);
                }
            }
        } else {
            mediaRecorder.setOrientationHint(nowAngle);
        }


        if (DeviceUtil.isHuaWeiRongyao()) {
            mediaRecorder.setVideoEncodingBitRate(4 * 100000);
        } else {
            mediaRecorder.setVideoEncodingBitRate(mediaQuality);
        }
        mediaRecorder.setPreviewDisplay(surface);

        videoFileName = "video_" + System.currentTimeMillis() + ".mp4";
        if (saveVideoPath.equals("")) {
            saveVideoPath = Environment.getExternalStorageDirectory().getPath();
        }
        videoFileAbsPath = saveVideoPath + File.separator + videoFileName;
        mediaRecorder.setOutputFile(videoFileAbsPath);
        try {
            mediaRecorder.prepare();
            mediaRecorder.start();
            isRecorder = true;
        } catch (IllegalStateException e) {
            e.printStackTrace();
            Log.i("CJT", "startRecord IllegalStateException");
            if (this.errorLisenter != null) {
                this.errorLisenter.onError();
            }
        } catch (IOException e) {
            e.printStackTrace();
            Log.i("CJT", "startRecord IOException");
            if (this.errorLisenter != null) {
                this.errorLisenter.onError();
            }
        } catch (RuntimeException e) {
            Log.i("CJT", "startRecord RuntimeException");
        }
    }

停止录像

    //停止录像
    public void stopRecord(boolean isShort, StopRecordCallback callback) {
        if (!isRecorder) {
            return;
        }
        if (mediaRecorder != null) {
            mediaRecorder.setOnErrorListener(null);
            mediaRecorder.setOnInfoListener(null);
            mediaRecorder.setPreviewDisplay(null);
            try {
                mediaRecorder.stop();
            } catch (RuntimeException e) {
                e.printStackTrace();
                mediaRecorder = null;
                mediaRecorder = new MediaRecorder();
            } finally {
                if (mediaRecorder != null) {
                    mediaRecorder.release();
                }
                mediaRecorder = null;
                isRecorder = false;
            }
            if (isShort) {
                if (FileUtil.deleteFile(videoFileAbsPath)) {
                    callback.recordResult(null, null);
                }
                return;
            }
            doStopPreview();
            String fileName = saveVideoPath + File.separator + videoFileName;
            callback.recordResult(fileName, videoFirstFrame);
        }
    }

   

对焦

    public void handleFocus(final Context context, final float x, final float y, final FocusCallback callback) {
        if (mCamera == null) {
            return;
        }
        final Camera.Parameters params = mCamera.getParameters();
        Rect focusRect = calculateTapArea(x, y, 1f, context);
        mCamera.cancelAutoFocus();
        if (params.getMaxNumFocusAreas() > 0) {
            List<Camera.Area> focusAreas = new ArrayList<>();
            focusAreas.add(new Camera.Area(focusRect, 800));
            params.setFocusAreas(focusAreas);
        } else {
            Log.i(TAG, "focus areas not supported");
            callback.focusSuccess();
            return;
        }
        final String currentFocusMode = params.getFocusMode();
        try {
            params.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
            mCamera.setParameters(params);
            mCamera.autoFocus(new Camera.AutoFocusCallback() {
                @Override
                public void onAutoFocus(boolean success, Camera camera) {
                    if (success || handlerTime > 10) {
                        Camera.Parameters params = camera.getParameters();
                        params.setFocusMode(currentFocusMode);
                        camera.setParameters(params);
                        handlerTime = 0;
                        callback.focusSuccess();
                    } else {
                        handlerTime++;
                        handleFocus(context, x, y, callback);
                    }
                }
            });
        } catch (Exception e) {
            Log.e(TAG, "autoFocus failer");
        }
    }