v310 拍照发现预览照片时显示异常

原因：

  jpg的EXIF信息出错， 为了简单， 不写入 EXIF即可

 

#if (CAM_WRITE_JPEG_THUMB_EXIF_EN > 0)
 if (mMsgEnabled & CAMERA_MSG_COMPRESSED_IMAGE) {
  camera_memory_t *ExifHeap =
            mGetMemoryCb(-1, EXIF_FILE_SIZE + mThumbSize, 1, 0);

        int JpegExifSize = mSecCamera->getExif((unsigned char *)ExifHeap->data,
                                           (unsigned char *)mThumbnailHeap->base(),
                                            mThumbSize);
        LOGV("JpegExifSize=%d", JpegExifSize);

        if (JpegExifSize < 0) {
            ret = UNKNOWN_ERROR;
            goto out;
        }

        int mJpegHeapSize_out = JpegImageSize + JpegExifSize;
        camera_memory_t *JpegHeap_out = mGetMemoryCb(-1, mJpegHeapSize_out, 1, 0);

        unsigned char *ExifStart = (unsigned char *)JpegHeap_out->data + 2;
        unsigned char *ImageStart = ExifStart + JpegExifSize;

        memcpy(JpegHeap_out->data, JpegHeap->data, 2);
        memcpy(ExifStart, ExifHeap->data, JpegExifSize);
        memcpy(ImageStart, JpegHeap->data + 2, JpegImageSize - 2);

        mDataCb(CAMERA_MSG_COMPRESSED_IMAGE, JpegHeap_out, 0, NULL, mCallbackCookie);

        if (ExifHeap) {
            ExifHeap->release(ExifHeap);
            ExifHeap = 0;
        }

        if (JpegHeap_out) {
            JpegHeap_out->release(JpegHeap_out);
            JpegHeap_out = 0;
        }
    }
#else
/*
在预览图片时底部显示异常， 但是真正打开时是显示正常的，
经查实发现是 EXIF 的信息造成的问题， 现在为了简单解决， 不写入 EXIT 信息
*/
 if (mMsgEnabled & CAMERA_MSG_COMPRESSED_IMAGE) {
  camera_memory_t *ExifHeap = NULL;
            //mGetMemoryCb(-1, EXIF_FILE_SIZE + mThumbSize, 1, 0);

        int JpegExifSize = 0;//mSecCamera->getExif((unsigned char *)ExifHeap->data,
                             //              (unsigned char *)mThumbnailHeap->base(),
                             //               mThumbSize);
        LOGV("JpegExifSize=%d", JpegExifSize);

        if (JpegExifSize < 0) {
            ret = UNKNOWN_ERROR;
            goto out;
        }

        int mJpegHeapSize_out = JpegImageSize + JpegExifSize;
        camera_memory_t *JpegHeap_out = mGetMemoryCb(-1, mJpegHeapSize_out, 1, 0);

        //unsigned char *ExifStart = (unsigned char *)JpegHeap_out->data + 2;
        //unsigned char *ImageStart = ExifStart + JpegExifSize;

        //memcpy(JpegHeap_out->data, JpegHeap->data, 2);
        //memcpy(ExifStart, ExifHeap->data, JpegExifSize);
        //memcpy(ImageStart, JpegHeap->data + 2, JpegImageSize - 2);
  //memcpy(ImageStart, JpegHeap->data, JpegImageSize);
  memcpy((unsigned char *)JpegHeap_out->data, JpegHeap->data, JpegImageSize);
  
        mDataCb(CAMERA_MSG_COMPRESSED_IMAGE, JpegHeap_out, 0, NULL, mCallbackCookie);
  

        if (ExifHeap) {
            ExifHeap->release(ExifHeap);
            ExifHeap = 0;
        }

        if (JpegHeap_out) {
            JpegHeap_out->release(JpegHeap_out);
            JpegHeap_out = 0;
        }
    }
#endif

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