KD_API KDImageATX KD_APIENTRY kdGetImageFromStreamATX(KDFile *file, KDint format, KDint flags)
{
_KDImageATX *image = (_KDImageATX *)kdMalloc(sizeof(_KDImageATX));
if(image == KD_NULL)
{
kdSetError(KD_ENOMEM);
return KD_NULL;
}
image->levels = 0;
image->bpp = 8;
KDStat st;
if(kdFstat(file, &st) == -1)
{
kdFree(image);
kdSetError(KD_EIO);
return KD_NULL;
}
void *filedata = kdMalloc((KDsize)st.st_size);
if(filedata == KD_NULL)
{
kdFree(image);
kdSetError(KD_ENOMEM);
return KD_NULL;
}
if(kdFread(filedata, 1, (KDsize)st.st_size, file) != (KDsize)st.st_size)
{
kdFree(filedata);
kdFree(image);
kdSetError(KD_EIO);
return KD_NULL;
}
if(kdFseek(file, 0, KD_SEEK_SET) == -1)
{
kdFree(filedata);
kdFree(image);
kdSetError(KD_EIO);
return KD_NULL;
}
KDint channels = 0;
image->format = format;
switch(image->format)
{
case(KD_IMAGE_FORMAT_RGBA8888_ATX):
{
channels = 4;
image->alpha = KD_TRUE;
break;
}
case(KD_IMAGE_FORMAT_RGB888_ATX):
{
channels = 3;
image->alpha = KD_FALSE;
break;
}
case(KD_IMAGE_FORMAT_LUMALPHA88_ATX):
{
channels = 2;
image->alpha = KD_TRUE;
break;
}
case(KD_IMAGE_FORMAT_LUM8_ATX):
{
channels = 1;
image->alpha = KD_FALSE;
break;
}
case(KD_IMAGE_FORMAT_COMPRESSED_ATX):
{
/* TODO: Load compressed formats (do not decode) */
}
default:
{
kdFree(filedata);
kdFree(image);
kdSetError(KD_EINVAL);
return KD_NULL;
}
}
if(kdStrstrVEN(file->pathname, ".pvr"))
{
if(channels == 4)
{
/* PVR v2 only*/
struct PVR_Texture_Header {
KDuint dwHeaderSize; /* size of the structure */
KDuint dwHeight; /* height of surface to be created */
KDuint dwWidth; /* width of input surface */
KDuint dwMipMapCount; /* number of mip-map levels requested */
KDuint dwpfFlags; /* pixel format flags */
KDuint dwTextureDataSize; /* Total size in bytes */
KDuint dwBitCount; /* number of bits per pixel */
KDuint dwRBitMask; /* mask for red bit */
KDuint dwGBitMask; /* mask for green bits */
KDuint dwBBitMask; /* mask for blue bits */
KDuint dwAlphaBitMask; /* mask for alpha channel */
KDuint dwPVR; /* magic number identifying pvr file */
KDuint dwNumSurfs; /* the number of surfaces present in the pvr */
};
struct PVR_Texture_Header header;
kdMemcpy(&header, filedata, sizeof(KDuint) * 13);
image->height = (KDint)header.dwHeight;
image->width = (KDint)header.dwWidth;
image->size = (KDsize)image->width * (KDsize)image->height * (KDsize)channels * sizeof(KDuint);
image->buffer = kdMalloc(image->size);
/* PVRCT2/4 RGB/RGBA compressed formats for now */
__kdDecompressPVRTC((const KDuint8 *)filedata + header.dwHeaderSize, 0, image->width, image->height, image->buffer);
}
}
else
{
if(flags == KD_IMAGE_FLAG_FLIP_X_ATX)
{
stbi_set_flip_vertically_on_load(1);
}
image->buffer = stbi_load_from_memory(filedata, (KDint)st.st_size, &image->width, &image->height, (KDint[]) {0}, channels);
image->size = (KDsize)image->width * (KDsize)image->height * (KDsize)channels * sizeof(KDuint);
}
kdFree(filedata);
if(image->buffer == KD_NULL)
{
kdLogMessagefKHR("%s.\n", stbi_failure_reason());
kdFree(image);
kdSetError(KD_EILSEQ);
return KD_NULL;
}
return image;
}
KDuint8* xmReadTileETC ( KDFile* file, XMImage* image )
{
ETCDecode* decode = (ETCDecode*) image->decode;
KDuint8* pixels = 0;
KDint block_size = 0;
KDint32 tile_size = 0;
if ( decode->pixels )
{
kdFree ( decode->pixels );
decode->pixels = 0;
}
block_size = 8;
tile_size = ( ( image->ptr_tile->width + 3 ) / 4 ) * ( ( image->ptr_tile->height + 3 ) / 4 ) * block_size;
pixels = (KDuint8*) kdMalloc ( tile_size );
if ( !pixels )
{
goto cleanup;
}
if ( kdFread ( pixels, tile_size, 1, file ) == 0 )
{
//goto cleanup;
}
if ( decode->uncomp == 1 )
{
tile_size = image->ptr_tile->width * image->ptr_tile->height * 3;
decode->pixels = (KDuint8*) kdMalloc ( tile_size );
if ( decode->pixels )
{
etc1_decode_image ( pixels, decode->pixels, image->ptr_tile->width, image->ptr_tile->height, 3, image->ptr_tile->width * 3 );
}
kdFree ( pixels );
}
else
{
decode->pixels = pixels;
image->ptr_tile->size = tile_size;
}
decode->row_count = 0;
image->ptr_tile->stride = tile_size / image->ptr_tile->height;
return decode->pixels;
cleanup :
if ( pixels )
{
kdFree ( pixels );
}
return 0;
}