| /* Copyright 2017 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef HAL_USB_CACHED_FRAME_H_ |
| #define HAL_USB_CACHED_FRAME_H_ |
| |
| #include <memory> |
| |
| #include <camera/camera_metadata.h> |
| |
| #include "hal/usb/image_processor.h" |
| |
| namespace cros { |
| |
| // CachedFrame contains a source FrameBuffer and a cached, converted |
| // FrameBuffer. The incoming frames would be converted to YU12, the default |
| // format of libyuv, to allow convenient processing. |
| class CachedFrame { |
| public: |
| CachedFrame(); |
| ~CachedFrame(); |
| |
| // SetSource() doesn't take ownership of |frame|. The caller can only release |
| // |frame| after calling UnsetSource(). SetSource() immediately converts |
| // incoming frame into YU12. Return non-zero values if it encounters errors. |
| // If |rotate_degree| is 90 or 270, |frame| will be cropped, rotated by the |
| // specified amount and scaled. |
| // This function will return an error if |rotate_degree| is not 0, 90, or |
| // 270. |
| int SetSource(const FrameBuffer* frame, int rotate_degree, bool test_pattern); |
| void UnsetSource(); |
| |
| uint8_t* GetSourceBuffer() const; |
| size_t GetSourceDataSize() const; |
| uint32_t GetSourceFourCC() const; |
| uint8_t* GetCachedBuffer() const; |
| uint32_t GetCachedFourCC() const; |
| |
| int GetWidth() const; |
| int GetHeight() const; |
| |
| // Caller should fill everything except |data_size| and |fd| of |out_frame|. |
| // The function will do crop of the center image by |crop_width| and |
| // |crop_height| first, and then do format conversion and scale to fit |
| // |out_frame| requirement. |
| // If |video_hack| is true, it outputs YU12 when |hal_pixel_format| is YV12 |
| // (swapping U/V planes). Caller should fill |fourcc|, |data|, and |
| // Return non-zero error code on failure; return 0 on success. |
| int Convert(const android::CameraMetadata& metadata, |
| int crop_width, |
| int crop_height, |
| FrameBuffer* out_frame, |
| bool video_hack = false); |
| |
| private: |
| int ConvertToYU12(bool test_pattern); |
| |
| // When we have a landscape mounted camera and the current camera activity is |
| // portrait, the frames shown in the activity would be stretched. Therefore, |
| // we want to simulate a native portrait camera. That's why we want to crop, |
| // rotate |rotate_degree| clockwise and scale the frame. HAL would not change |
| // CameraInfo.orientation. Instead, framework would fake the |
| // CameraInfo.orientation. Framework would then tell HAL how much the frame |
| // needs to rotate clockwise by |rotate_degree|. |
| int CropRotateScale(int rotate_degree); |
| |
| // CachedFrame does not take the ownership of |source_frame_|. |
| const FrameBuffer* source_frame_; |
| |
| // Temporary buffer for cropped, rotated and scaled results. |
| std::unique_ptr<SharedFrameBuffer> temp_frame_; |
| std::unique_ptr<SharedFrameBuffer> temp_frame2_; |
| |
| // Cache YU12 decoded results. |
| std::unique_ptr<SharedFrameBuffer> yu12_frame_; |
| |
| // ImageProcessor instance. |
| std::unique_ptr<ImageProcessor> image_processor_; |
| }; |
| |
| } // namespace cros |
| |
| #endif // HAL_USB_CACHED_FRAME_H_ |