TexConv/pixel_format.cpp

#include"pixel_format.h"
#include<hgl/type/StrChar.h>

namespace hgl
{
    constexpr PixelFormat pf_list[]=
    {
        {ColorFormat::BGRA4,      "BGRA4",      {'B','G','R','A'},{ 4, 4, 4, 4},ColorDataType::UNORM},
        {ColorFormat::RGB565,     "RGB565",     {'R','G','B', 0 },{ 4, 5, 5, 0},ColorDataType::UNORM},
        {ColorFormat::A1RGB5,     "A1RGB5",     {'A','R','G','B'},{ 1, 5, 5, 5},ColorDataType::UNORM},
        {ColorFormat::R8UN,       "R8UN",       {'R', 0 , 0 , 0 },{ 8, 0, 0, 0},ColorDataType::UNORM},
        {ColorFormat::RG8UN,      "RG8UN",      {'R','G', 0 , 0 },{ 8, 8, 0, 0},ColorDataType::UNORM},
        {ColorFormat::RGBA8UN,    "RGBA8UN",    {'R','G','B','A'},{ 8, 8, 8, 8},ColorDataType::UNORM},
        {ColorFormat::ABGR8UN,    "ABGR8UN",    {'A','B','G','R'},{ 8, 8, 8, 8},ColorDataType::UNORM},
        {ColorFormat::A2BGR10UN,  "A2BGR10UN",  {'A','B','G','R'},{ 2,10,10,10},ColorDataType::UNORM},
        {ColorFormat::R16UN,      "R16UN",      {'R', 0 , 0 , 0 },{16, 0, 0, 0},ColorDataType::UNORM},
        {ColorFormat::R16F,       "R16F",       {'R', 0 , 0 , 0 },{16, 0, 0, 0},ColorDataType::SFLOAT},
        {ColorFormat::RG16UN,     "RG16UN",     {'R','G', 0 , 0 },{16,16, 0, 0},ColorDataType::UNORM},
        {ColorFormat::RG16F,      "RG16F",      {'R','G', 0 , 0 },{16,16, 0, 0},ColorDataType::SFLOAT},
        {ColorFormat::RGBA16UN,   "RGBA16UN",   {'R','G','B','A'},{16,16,16, 0},ColorDataType::UNORM},
        {ColorFormat::RGBA16F,    "RGBA16F",    {'R','G','B','A'},{16,16,16, 0},ColorDataType::SFLOAT},
        {ColorFormat::R32U,       "R32U",       {'R', 0 , 0 , 0 },{32, 0, 0, 0},ColorDataType::UINT},
        {ColorFormat::R32I,       "R32I",       {'R', 0 , 0 , 0 },{32, 0, 0, 0},ColorDataType::SINT},
        {ColorFormat::R32F,       "R32F",       {'R', 0 , 0 , 0 },{32, 0, 0, 0},ColorDataType::SFLOAT},
        {ColorFormat::RG32U,      "RG32U",      {'R','G', 0 , 0 },{32,32, 0, 0},ColorDataType::UINT},
        {ColorFormat::RG32I,      "RG32I",      {'R','G', 0 , 0 },{32,32, 0, 0},ColorDataType::SINT},
        {ColorFormat::RG32F,      "RG32F",      {'R','G', 0 , 0 },{32,32, 0, 0},ColorDataType::SFLOAT},
        {ColorFormat::RGB32U,     "RGB32U",     {'R','G','B', 0 },{32,32,32, 0},ColorDataType::UINT},
        {ColorFormat::RGB32I,     "RGB32I",     {'R','G','B', 0 },{32,32,32, 0},ColorDataType::SINT},
        {ColorFormat::RGB32F,     "RGB32F",     {'R','G','B', 0 },{32,32,32, 0},ColorDataType::SFLOAT},
        {ColorFormat::RGBA32U,    "RGBA32U",    {'R','G','B','A'},{32,32,32,32},ColorDataType::UINT},
        {ColorFormat::RGBA32I,    "RGBA32I",    {'R','G','B','A'},{32,32,32,32},ColorDataType::SINT},
        {ColorFormat::RGBA32F,    "RGBA32F",    {'R','G','B','A'},{32,32,32,32},ColorDataType::SFLOAT}
    };

    constexpr uint PixelFormatCount=sizeof(pf_list)/sizeof(PixelFormat);
}//namespace

const PixelFormat *GetPixelFormat(ColorFormat fmt)
{
    if(fmt<=ColorFormat::NONE
     ||fmt>=ColorFormat::END)return(nullptr);

    const PixelFormat *pf=pf_list;

    for(uint i=0;i<PixelFormatCount;i++)
    {
        if(pf->format==fmt)
            return pf;

        ++pf;
    }

    return nullptr;
}

const PixelFormat *GetPixelFormat(const char *name)
{
    if(!name||!*name)return(nullptr);

    const PixelFormat *pf=pf_list;

    for(uint i=0;i<PixelFormatCount;i++)
    {
        if(hgl::stricmp(name,pf->name)==0)
            return pf;

        ++pf;
    }

    return nullptr;
}