| // Copyright 2009 Google Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #pragma once |
| |
| #include <stdint.h> |
| #include <cstddef> |
| |
| enum RGTCImageFormat { BC4_UNORM, BC4_SNORM, BC5_UNORM, BC5_SNORM }; |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| // Decode an entire image. |
| // pIn - pointer to encoded data. |
| // pOut - pointer to the image data. Will be written such that |
| // pixel (x,y) is at pIn + pixelSize * x + stride * y. Must be |
| // large enough to store entire image. |
| // (pixelSize=3 for rgb images, pixelSize=4 for images with alpha channel) |
| // returns non-zero if there is an error. |
| int rgtc_decode_image(const uint8_t* pIn, RGTCImageFormat format, uint8_t* pOut, uint32_t width, |
| uint32_t height, uint32_t stride); |
| |
| size_t rgtc_get_encoded_image_size(RGTCImageFormat format, uint32_t width, uint32_t height); |
| |
| size_t rgtc_get_decoded_pixel_size(RGTCImageFormat format); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
