138 lines
3.5 KiB
C++
138 lines
3.5 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef BITDEPTHS_H
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#define BITDEPTHS_H
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#include <memory>
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#include <OpenImageIO/imageio.h>
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#include <QOpenGLExtraFunctions>
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#include <QString>
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#include "render/rendermodes.h"
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class Frame;
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using FramePtr = std::shared_ptr<Frame>;
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class PixelFormat : public QObject
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{
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Q_OBJECT
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public:
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/**
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* @brief Olive's internal supported pixel formats.
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*/
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enum Format {
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PIX_FMT_INVALID = -1,
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PIX_FMT_RGBA8,
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PIX_FMT_RGBA16U,
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PIX_FMT_RGBA16F,
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PIX_FMT_RGBA32F,
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PIX_FMT_RGB8,
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PIX_FMT_RGB16U,
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PIX_FMT_RGB16F,
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PIX_FMT_RGB32F,
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PIX_FMT_COUNT
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};
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static void CreateInstance();
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static void DestroyInstance();
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static PixelFormat* instance();
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/**
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* @brief Returns the configured pixel format for a given mode
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*/
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Format GetConfiguredFormatForMode(RenderMode::Mode mode);
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void SetConfiguredFormatForMode(RenderMode::Mode mode, PixelFormat::Format format);
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static Format OIIOFormatToOliveFormat(OIIO::TypeDesc desc, bool has_alpha);
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/**
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* @brief Returns the minimum buffer size (in bytes) necessary for a given format, width, and height.
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*
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* @param format
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*
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* The format of the data the buffer should contain. Must be a member of the olive::PixelFormat enum.
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*
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* @param width
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*
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* The width (in pixels) of the buffer.
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*
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* @param height
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*
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* The height (in pixels) of the buffer.
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*/
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static int GetBufferSize(const Format &format, const int& width, const int& height);
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/**
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* @brief Returns the number of bytes per pixel for a certain format
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*
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* Different formats use different sizes of data for pixels. Use this function to determine how many bytes a pixel
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* requires for a certain format. The number of bytes will always be a multiple of 4 since all formats use RGBA and
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* are at least 1 bpc.
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*/
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static int BytesPerPixel(const Format &format);
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/**
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* @brief Returns the number of bytes per channel for a certain format
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*/
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static int BytesPerChannel(const Format& format);
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/**
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* @brief Return the number of channels in this format
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*/
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static int ChannelCount(const Format& format);
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/**
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* @brief Convert a frame to a pixel format
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*
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* If the frame's pixel format == the destination format, this just returns `frame`.
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*/
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static FramePtr ConvertPixelFormat(FramePtr frame, const Format &dest_format);
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/**
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* @brief Simple convenience function returning whether a pixel format has an alpha channel or not
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*/
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static bool FormatHasAlphaChannel(const Format& format);
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/**
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* @brief Get corresponding OpenImageIO TypeDesc for a given pixel format
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*/
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static OIIO::TypeDesc::BASETYPE GetOIIOTypeDesc(const Format& format);
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/**
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* @brief Get format name
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*/
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static QString GetName(const Format& format);
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signals:
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void FormatChanged();
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private:
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PixelFormat() = default;
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static PixelFormat* instance_;
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};
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#endif // BITDEPTHS_H
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