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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#pragma once
#include "../AddonBase.h"
namespace kodi { namespace addon { class CInstanceImageDecoder; }}
extern "C"
{
typedef struct AddonProps_ImageDecoder
{
const char* mimetype;
} AddonProps_ImageDecoder;
typedef struct AddonToKodiFuncTable_ImageDecoder
{
KODI_HANDLE kodi_instance;
} AddonToKodiFuncTable_ImageDecoder;
struct AddonInstance_ImageDecoder;
typedef struct KodiToAddonFuncTable_ImageDecoder
{
kodi::addon::CInstanceImageDecoder* addonInstance;
bool (__cdecl* load_image_from_memory) (const AddonInstance_ImageDecoder* instance,
unsigned char* buffer, unsigned int buf_size,
unsigned int* width, unsigned int* height);
bool (__cdecl* decode) (const AddonInstance_ImageDecoder* instance,
unsigned char* pixels,
unsigned int width, unsigned int height,
unsigned int pitch, unsigned int format);
} KodiToAddonFuncTable_ImageDecoder;
typedef struct AddonInstance_ImageDecoder
{
AddonProps_ImageDecoder props;
AddonToKodiFuncTable_ImageDecoder toKodi;
KodiToAddonFuncTable_ImageDecoder toAddon;
} AddonInstance_ImageDecoder;
} /* extern "C" */
typedef enum ImageFormat : unsigned int
{
ADDON_IMG_FMT_A8R8G8B8 = 1,
ADDON_IMG_FMT_A8 = 2,
ADDON_IMG_FMT_RGBA8 = 3,
ADDON_IMG_FMT_RGB8 = 4
} ImageFormat;
namespace kodi
{
namespace addon
{
class CInstanceImageDecoder : public IAddonInstance
{
public:
//==========================================================================
/// @brief Class constructor
///
/// @param[in] instance The from Kodi given instance given be
/// add-on CreateInstance call with instance
/// id ADDON_INSTANCE_IMAGEDECODER.
explicit CInstanceImageDecoder(KODI_HANDLE instance)
: IAddonInstance(ADDON_INSTANCE_IMAGEDECODER)
{
if (CAddonBase::m_interface->globalSingleInstance != nullptr)
throw std::logic_error("kodi::addon::CInstanceImageDecoder: Creation of multiple together with single instance way is not allowed!");
SetAddonStruct(instance);
}
//--------------------------------------------------------------------------
~CInstanceImageDecoder() override = default;
//==========================================================================
/// @brief Initialize an encoder
///
/// @param[in] buffer The data to read from memory
/// @param[in] bufSize The buffer size
/// @param[in,out] width The optimal width of image on entry, obtained width on return
/// @param[in,out] height The optimal height of image, actual obtained height on return
/// @return true if successful done, false on error
///
virtual bool LoadImageFromMemory(unsigned char* buffer, unsigned int bufSize,
unsigned int& width, unsigned int& height) = 0;
//--------------------------------------------------------------------------
//==========================================================================
/// @brief Decode previously loaded image
///
/// @param[in] pixels Output buffer
/// @param[in] width Width of output image
/// @param[in] height Height of output image
/// @param[in] pitch Pitch of output image
/// @param[in] format Format of output image
/// @return true if successful done, false on error
///
virtual bool Decode(unsigned char* pixels,
unsigned int width, unsigned int height,
unsigned int pitch, ImageFormat format) = 0;
//--------------------------------------------------------------------------
//==========================================================================
/// @brief Get the wanted mime type from Kodi
///
/// @return the mimetype wanted from Kodi
///
inline std::string MimeType() { return m_instanceData->props.mimetype; }
//--------------------------------------------------------------------------
private:
void SetAddonStruct(KODI_HANDLE instance)
{
if (instance == nullptr)
throw std::logic_error("kodi::addon::CInstanceImageDecoder: Creation with empty addon structure not allowed, table must be given from Kodi!");
m_instanceData = static_cast<AddonInstance_ImageDecoder*>(instance);
m_instanceData->toAddon.addonInstance = this;
m_instanceData->toAddon.load_image_from_memory = ADDON_LoadImageFromMemory;
m_instanceData->toAddon.decode = ADDON_Decode;
}
inline static bool ADDON_LoadImageFromMemory(const AddonInstance_ImageDecoder* instance,
unsigned char* buffer, unsigned int bufSize,
unsigned int* width, unsigned int* height)
{
return instance->toAddon.addonInstance->LoadImageFromMemory(buffer, bufSize, *width, *height);
}
inline static bool ADDON_Decode(const AddonInstance_ImageDecoder* instance,
unsigned char* pixels,
unsigned int width, unsigned int height,
unsigned int pitch, unsigned int format)
{
return instance->toAddon.addonInstance->Decode(pixels, width, height, pitch, static_cast<ImageFormat>(format));
}
AddonInstance_ImageDecoder* m_instanceData;
};
} /* namespace addon */
} /* namespace kodi */
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