/*
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* Copyright (c) 2021 by Allwinnertech Co., Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef V4L2_CAMERA_HAL_STREAM_FORMAT_H_
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#define V4L2_CAMERA_HAL_STREAM_FORMAT_H_
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#include <string.h>
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#include <linux/videodev2.h>
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#include <string>
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#include <map>
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#include "common.h"
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namespace v4l2_camera_hal {
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enum FormatCategory {
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kFormatCategoryRaw,
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kFormatCategoryStalling,
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kFormatCategoryNonStalling,
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kFormatCategoryUnknown,
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};
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class StreamFormat {
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public:
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StreamFormat(int format, uint32_t width, uint32_t height);
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StreamFormat(const v4l2_format& format, bool mergeStreamFlag);
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virtual ~StreamFormat() = default;
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// Only uint32_t members, use default generated copy and assign.
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void FillFormatRequest(v4l2_format* format) const;
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FormatCategory Category() const;
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// Accessors.
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inline uint32_t type() const { return type_; }
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inline uint32_t memory() const { return memory_; }
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inline uint32_t nplanes() const { return nplanes_; }
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inline uint32_t width() const { return width_; }
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inline uint32_t height() const { return height_; }
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inline uint32_t bytes_per_line() const { return bytes_per_line_; }
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bool operator==(const StreamFormat& other) const;
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bool operator!=(const StreamFormat& other) const;
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// HAL <-> V4L2 conversions
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// Returns 0 for unrecognized.
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static uint32_t HalToV4L2PixelFormat(int hal_pixel_format);
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// Returns -1 for unrecognized.
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static int V4L2ToHalPixelFormat(uint32_t v4l2_pixel_format);
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bool GetMergeStreamFlag();
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private:
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uint32_t type_;
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uint32_t memory_;
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uint32_t nplanes_;
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uint32_t v4l2_pixel_format_;
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uint32_t width_;
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uint32_t height_;
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uint32_t bytes_per_line_;
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bool merge_stream_flag_;
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};
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} // namespace v4l2_camera_hal
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#endif // V4L2_CAMERA_HAL_STREAM_FORMAT_H_
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