84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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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 <cstring>
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#include <linux/videodev2.h>
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#include "arc/common_types.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);
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StreamFormat(const arc::SupportedFormat& format);
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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 width() const { return width_; };
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inline uint32_t height() const { return height_; };
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inline uint32_t v4l2_pixel_format() const { return v4l2_pixel_format_; }
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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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// ARC++ SupportedFormat Helpers
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static bool FindBestFitFormat(const arc::SupportedFormats& supported_formats,
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const arc::SupportedFormats& qualified_formats,
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uint32_t fourcc, uint32_t width,
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uint32_t height,
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arc::SupportedFormat* out_format);
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static bool FindFormatByResolution(const arc::SupportedFormats& formats,
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uint32_t width, uint32_t height,
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arc::SupportedFormat* out_format);
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static arc::SupportedFormats GetQualifiedFormats(
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const arc::SupportedFormats& supported_formats);
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private:
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uint32_t type_;
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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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};
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} // namespace v4l2_camera_hal
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#endif // V4L2_CAMERA_HAL_STREAM_FORMAT_H_
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