1 /* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     2  *

     3  * Permission is hereby granted, free of charge, to any person obtaining a

     4  * copy of this software and /or associated documentation files

     5  * (the "Materials "), to deal in the Materials without restriction,

     6  * including without limitation the rights to use, copy, modify, merge,

     7  * publish, distribute, sublicense, and/or sell copies of the Materials,

     8  * and to permit persons to whom the Materials are furnished to do so,

     9  * subject to the following conditions:

    10  *

    11  * The above copyright notice and this permission notice shall be included

    12  * in all copies or substantial portions of the Materials.

    13  *

    14  * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

    15  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

    16  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

    17  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

    18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

    19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR

    20  * THE USE OR OTHER DEALINGS IN THE MATERIALS.

    21  *

    22  * Initial Contributors:

    23  * Nokia Corporation - initial contribution.

    24  *

    25  * Contributors:

    26  *

    27  * Description:

    28  *

    29  */

    30 

    31 #ifndef _GLESTEXTURE_H_

    32 #define _GLESTEXTURE_H_

    33 

    34 #include <GLES/gl.h>

    35 

    36 struct GLESTextureLevel

    37 {

    38 	GLenum format;

    39 	GLsizei width;

    40 	GLsizei height;

    41 	void* boundSurface; // The EGLSurface bound to this image with eglBindTexImage.

    42 };

    43 

    44 class GLESTexture

    45 {

    46 public:

    47 	GLESTexture(GLuint name);

    48 	bool AllocateLevels(int numLevels);

    49 	~GLESTexture();

    50 

    51 	GLuint Name() const { return m_name; }

    52 	GLESTextureLevel* Level(int level);

    53 

    54 	void SetLevel(int level, GLenum format, GLsizei width, GLsizei height);

    55 	void GenerateMipmap();

    56 

    57 private:

    58 	GLuint m_name;

    59 	int m_numLevels;

    60 	GLESTextureLevel* m_levels;

    61 };

    62 

    63 bool glesIsValidCompressedFormat(GLenum format);

    64 GLenum glesMapCompressedToBaseFormat(GLenum format);

    65 void* glesUncompressImage(int level, GLenum format, int width, int height, int imageSize, const void* data);

    66 

    67 #endif // _GLES_TEXTURE_H_