OpenSubdiv/examples/common/hdr_reader.h

//
//   Copyright 2013 Pixar
//
//   Licensed under the Apache License, Version 2.0 (the "Apache License")
//   with the following modification; you may not use this file except in
//   compliance with the Apache License and the following modification to it:
//   Section 6. Trademarks. is deleted and replaced with:
//
//   6. Trademarks. This License does not grant permission to use the trade
//      names, trademarks, service marks, or product names of the Licensor
//      and its affiliates, except as required to comply with Section 4(c) of
//      the License and to reproduce the content of the NOTICE file.
//
//   You may obtain a copy of the Apache License at
//
//       http://www.apache.org/licenses/LICENSE-2.0
//
//   Unless required by applicable law or agreed to in writing, software
//   distributed under the Apache License with the above modification is
//   distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
//   KIND, either express or implied. See the Apache License for the specific
//   language governing permissions and limitations under the Apache License.
//

#define HDR_X_MAJOR (1 << 0)
#define HDR_Y_MAJOR (1 << 1)
#define HDR_X_DEC   (1 << 2)
#define HDR_Y_DEC   (1 << 3)

struct HdrInfo
{
    char magic[64];
    char format[64];
    double exposure;
    int width;
    int height;
    char flag;
    int scanLength;
    int scanWidth;
};

extern unsigned char *loadHdr(const char *filename, HdrInfo *info, bool convertToFloat);