android 前摄镜像的源码修改

来源：互联网发布：数据挖掘可以做什么编辑：程序博客网时间：2024/06/06 13:56

最近遇到一个客户需求，要求在前摄的时候，不要求镜像预览，拍出来的照片也不要求镜像。

科谱一下，前摄镜像的原因是让镜头对着自己，当镜子使用，是专门这么设计的。

既然客户有要求，那就得修改了。

通过各种渠道找，之前想通过驱动层修改代码，但是驱动同事告诉我，预览可以修改，拍出来的照片修改不了。

拍出来的照片只能是在应用层修改，那就只能在AP侧找源码。

此代码是基于高通的基础之上的，android 7.1平台。

packages\apps\SnapdragonCamera\src\com\android\camera\PhotoModule.java

private void setFlipValue() {        // Read Flip mode from adb command        //value: 0(default) - FLIP_MODE_OFF        //value: 1 - FLIP_MODE_H        //value: 2 - FLIP_MODE_V        //value: 3 - FLIP_MODE_VH        int preview_flip_value = SystemProperties.getInt("debug.camera.preview.flip", 0);        int video_flip_value = SystemProperties.getInt("debug.camera.video.flip", 0);        int picture_flip_value = SystemProperties.getInt("debug.camera.picture.flip", 0);        int rotation = CameraUtil.getJpegRotation(mCameraId, mOrientation);        mParameters.setRotation(rotation);        if (rotation == 90 || rotation == 270) {            // in case of 90 or 270 degree, V/H flip should reverse            if (preview_flip_value == 1) {                preview_flip_value = 2;            } else if (preview_flip_value == 2) {                preview_flip_value = 1;            }            if (video_flip_value == 1) {                video_flip_value = 2;            } else if (video_flip_value == 2) {                video_flip_value = 1;            }            if (picture_flip_value == 1) {                picture_flip_value = 2;            } else if (picture_flip_value == 2) {                picture_flip_value = 1;            }        }        String preview_flip = CameraUtil.getFilpModeString(preview_flip_value);        String video_flip = CameraUtil.getFilpModeString(video_flip_value);        String picture_flip = CameraUtil.getFilpModeString(picture_flip_value);        if(CameraUtil.isSupported(preview_flip, CameraSettings.getSupportedFlipMode(mParameters))){            mParameters.set(CameraSettings.KEY_QC_PREVIEW_FLIP, preview_flip);        }        if(CameraUtil.isSupported(video_flip, CameraSettings.getSupportedFlipMode(mParameters))){            mParameters.set(CameraSettings.KEY_QC_VIDEO_FLIP, video_flip);        }        if(CameraUtil.isSupported(picture_flip, CameraSettings.getSupportedFlipMode(mParameters))){            mParameters.set(CameraSettings.KEY_QC_SNAPSHOT_PICTURE_FLIP, picture_flip);        }    }

找到这个函数，

添加log,

private void setFlipValue() {        // Read Flip mode from adb command        //value: 0(default) - FLIP_MODE_OFF        //value: 1 - FLIP_MODE_H        //value: 2 - FLIP_MODE_V        //value: 3 - FLIP_MODE_VH        int preview_flip_value = SystemProperties.getInt("debug.camera.preview.flip", 0);        int video_flip_value = SystemProperties.getInt("debug.camera.video.flip", 0);        int picture_flip_value = SystemProperties.getInt("debug.camera.picture.flip", 0);        int rotation = CameraUtil.getJpegRotation(mCameraId, mOrientation);Log.d("leo","preview_flip_value-->"+preview_flip_value);Log.d("leo","video_flip_value-->"+video_flip_value);Log.d("leo","picture_flip_value-->"+picture_flip_value);Log.d("leo","rotation-->"+rotation);Log.d("leo","mCameraId-->"+mCameraId);Log.d("leo","mOrientation-->"+mOrientation);        mParameters.setRotation(rotation);        if (rotation == 90 || rotation == 270) {            // in case of 90 or 270 degree, V/H flip should reverse            if (preview_flip_value == 1) {                preview_flip_value = 2;            } else if (preview_flip_value == 2) {                preview_flip_value = 1;            }            if (video_flip_value == 1) {                video_flip_value = 2;            } else if (video_flip_value == 2) {                video_flip_value = 1;            }            if (picture_flip_value == 1) {                picture_flip_value = 2;            } else if (picture_flip_value == 2) {                picture_flip_value = 1;            }        }        String preview_flip = CameraUtil.getFilpModeString(preview_flip_value);        String video_flip = CameraUtil.getFilpModeString(video_flip_value);        String picture_flip = CameraUtil.getFilpModeString(picture_flip_value);Log.d("leo","preview_flip-->"+preview_flip);Log.d("leo","video_flip-->"+video_flip);Log.d("leo","picture_flip-->"+picture_flip);        if(CameraUtil.isSupported(preview_flip, CameraSettings.getSupportedFlipMode(mParameters))){            mParameters.set(CameraSettings.KEY_QC_PREVIEW_FLIP, preview_flip);        }        if(CameraUtil.isSupported(video_flip, CameraSettings.getSupportedFlipMode(mParameters))){            mParameters.set(CameraSettings.KEY_QC_VIDEO_FLIP, video_flip);        }        if(CameraUtil.isSupported(picture_flip, CameraSettings.getSupportedFlipMode(mParameters))){            mParameters.set(CameraSettings.KEY_QC_SNAPSHOT_PICTURE_FLIP, picture_flip);        }    }

在代码的这个地方，

mParameters.set

设置相机的属性时，会有一个flip属性，这个属性就可以设置拍出来的照片是否镜像，v方向还是h方向镜像。
如果需要修改，可以参考以下：

private void setFlipValue() {        // Read Flip mode from adb command        //value: 0(default) - FLIP_MODE_OFF        //value: 1 - FLIP_MODE_H        //value: 2 - FLIP_MODE_V        //value: 3 - FLIP_MODE_VH        int preview_flip_value = SystemProperties.getInt("debug.camera.preview.flip", 0);        int video_flip_value = SystemProperties.getInt("debug.camera.video.flip", 0);        int picture_flip_value = SystemProperties.getInt("debug.camera.picture.flip", 0);        int rotation = CameraUtil.getJpegRotation(mCameraId, mOrientation);Log.d("leo","preview_flip_value-->"+preview_flip_value);Log.d("leo","video_flip_value-->"+video_flip_value);Log.d("leo","picture_flip_value-->"+picture_flip_value);Log.d("leo","rotation-->"+rotation);Log.d("leo","mCameraId-->"+mCameraId);Log.d("leo","mOrientation-->"+mOrientation);                // 在这个地方添加对cameraiId的判断，也就是你想镜像哪一个camera，就判断一个id就可以了，               // 对filp的修改也是根据你的需要来修改的，我这里只需要修改拍照后的镜像，那就修改picture_flip_value               if(2 == mCameraId){picture_flip_value = 2;}        mParameters.setRotation(rotation);        if (rotation == 90 || rotation == 270) {            // in case of 90 or 270 degree, V/H flip should reverse            if (preview_flip_value == 1) {                preview_flip_value = 2;            } else if (preview_flip_value == 2) {                preview_flip_value = 1;            }            if (video_flip_value == 1) {                video_flip_value = 2;            } else if (video_flip_value == 2) {                video_flip_value = 1;            }            if (picture_flip_value == 1) {                picture_flip_value = 2;            } else if (picture_flip_value == 2) {                picture_flip_value = 1;            }        }        String preview_flip = CameraUtil.getFilpModeString(preview_flip_value);        String video_flip = CameraUtil.getFilpModeString(video_flip_value);        String picture_flip = CameraUtil.getFilpModeString(picture_flip_value);Log.d("leo","preview_flip-->"+preview_flip);Log.d("leo","video_flip-->"+video_flip);Log.d("leo","picture_flip-->"+picture_flip);        if(CameraUtil.isSupported(preview_flip, CameraSettings.getSupportedFlipMode(mParameters))){            mParameters.set(CameraSettings.KEY_QC_PREVIEW_FLIP, preview_flip);        }        if(CameraUtil.isSupported(video_flip, CameraSettings.getSupportedFlipMode(mParameters))){            mParameters.set(CameraSettings.KEY_QC_VIDEO_FLIP, video_flip);        }        if(CameraUtil.isSupported(picture_flip, CameraSettings.getSupportedFlipMode(mParameters))){            mParameters.set(CameraSettings.KEY_QC_SNAPSHOT_PICTURE_FLIP, picture_flip);        }    }

亲测有效哦，实际拍出来的效果我就不上图了，请gongchengshi们自己动手试试吧。

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