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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef V4L2_CAMERA_HAL_STREAM_FORMAT_H_
#define V4L2_CAMERA_HAL_STREAM_FORMAT_H_
#include <cstring>
#include <linux/videodev2.h>
#include "arc/common_types.h"
namespace v4l2_camera_hal {
enum FormatCategory {
kFormatCategoryRaw,
kFormatCategoryStalling,
kFormatCategoryNonStalling,
kFormatCategoryUnknown,
};
class StreamFormat {
public:
StreamFormat(int format, uint32_t width, uint32_t height);
StreamFormat(const v4l2_format& format);
StreamFormat(const arc::SupportedFormat& format);
virtual ~StreamFormat() = default;
// Only uint32_t members, use default generated copy and assign.
void FillFormatRequest(v4l2_format* format) const;
FormatCategory Category() const;
// Accessors.
inline uint32_t type() const { return type_; };
inline uint32_t width() const { return width_; };
inline uint32_t height() const { return height_; };
inline uint32_t v4l2_pixel_format() const { return v4l2_pixel_format_; }
inline uint32_t bytes_per_line() const { return bytes_per_line_; };
bool operator==(const StreamFormat& other) const;
bool operator!=(const StreamFormat& other) const;
// HAL <-> V4L2 conversions
// Returns 0 for unrecognized.
static uint32_t HalToV4L2PixelFormat(int hal_pixel_format);
// Returns -1 for unrecognized.
static int V4L2ToHalPixelFormat(uint32_t v4l2_pixel_format);
// ARC++ SupportedFormat Helpers
static bool FindBestFitFormat(const arc::SupportedFormats& supported_formats,
const arc::SupportedFormats& qualified_formats,
uint32_t fourcc, uint32_t width,
uint32_t height,
arc::SupportedFormat* out_format);
static bool FindFormatByResolution(const arc::SupportedFormats& formats,
uint32_t width, uint32_t height,
arc::SupportedFormat* out_format);
static arc::SupportedFormats GetQualifiedFormats(
const arc::SupportedFormats& supported_formats);
private:
uint32_t type_;
uint32_t v4l2_pixel_format_;
uint32_t width_;
uint32_t height_;
uint32_t bytes_per_line_;
};
} // namespace v4l2_camera_hal
#endif // V4L2_CAMERA_HAL_STREAM_FORMAT_H_
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