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/* $Id: image.h,v 1.1 2003-02-28 11:42:03 pj Exp $ */
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/*
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 * Mesa 3-D graphics library
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 * Version:  4.1
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 *
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 * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included
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 * in all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
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 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 */
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#ifndef IMAGE_H
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#define IMAGE_H
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#include "mtypes.h"
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extern const struct gl_pixelstore_attrib _mesa_native_packing;
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extern void
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_mesa_swap2( GLushort *p, GLuint n );
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extern void
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_mesa_swap4( GLuint *p, GLuint n );
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extern GLint
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_mesa_sizeof_type( GLenum type );
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extern GLint
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_mesa_sizeof_packed_type( GLenum type );
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extern GLint
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_mesa_components_in_format( GLenum format );
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extern GLint
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_mesa_bytes_per_pixel( GLenum format, GLenum type );
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extern GLboolean
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_mesa_is_legal_format_and_type( GLenum format, GLenum type );
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extern GLvoid *
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_mesa_image_address( const struct gl_pixelstore_attrib *packing,
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                     const GLvoid *image, GLsizei width,
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                     GLsizei height, GLenum format, GLenum type,
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                     GLint img, GLint row, GLint column );
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extern GLint
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_mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
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                        GLint width, GLenum format, GLenum type );
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extern GLint
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_mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
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                          GLint width, GLint height,
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                          GLenum format, GLenum type );
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extern void
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_mesa_unpack_polygon_stipple( const GLubyte *pattern, GLuint dest[32],
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                              const struct gl_pixelstore_attrib *unpacking );
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extern void
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_mesa_pack_polygon_stipple( const GLuint pattern[32], GLubyte *dest,
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                            const struct gl_pixelstore_attrib *packing );
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extern GLvoid *
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_mesa_unpack_bitmap( GLint width, GLint height, const GLubyte *pixels,
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                     const struct gl_pixelstore_attrib *packing );
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extern void
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_mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source,
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                   GLubyte *dest, const struct gl_pixelstore_attrib *packing );
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extern void
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_mesa_pack_float_rgba_span( GLcontext *ctx,
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                            GLuint n, CONST GLfloat rgba[][4],
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                            GLenum dstFormat, GLenum dstType, GLvoid *dstAddr,
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                            const struct gl_pixelstore_attrib *dstPacking,
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                            GLuint transferOps );
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extern void
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_mesa_pack_rgba_span( GLcontext *ctx,
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                      GLuint n, CONST GLchan rgba[][4],
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                      GLenum dstFormat, GLenum dstType, GLvoid *dstAddr,
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                      const struct gl_pixelstore_attrib *dstPacking,
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                      GLuint transferOps );
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extern void
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_mesa_unpack_chan_color_span( GLcontext *ctx,
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                              GLuint n, GLenum dstFormat, GLchan dest[],
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                              GLenum srcFormat, GLenum srcType,
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                              const GLvoid *source,
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                              const struct gl_pixelstore_attrib *srcPacking,
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                              GLuint transferOps );
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extern void
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_mesa_unpack_float_color_span( GLcontext *ctx,
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                               GLuint n, GLenum dstFormat, GLfloat dest[],
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                               GLenum srcFormat, GLenum srcType,
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                               const GLvoid *source,
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                               const struct gl_pixelstore_attrib *srcPacking,
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                               GLuint transferOps, GLboolean clamp );
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extern void
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_mesa_unpack_index_span( const GLcontext *ctx, GLuint n,
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                         GLenum dstType, GLvoid *dest,
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                         GLenum srcType, const GLvoid *source,
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                         const struct gl_pixelstore_attrib *srcPacking,
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                         GLuint transferOps );
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extern void
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_mesa_pack_index_span( const GLcontext *ctx, GLuint n,
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                       GLenum dstType, GLvoid *dest, const GLuint *source,
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                       const struct gl_pixelstore_attrib *dstPacking,
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                       GLuint transferOps );
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extern void
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_mesa_unpack_stencil_span( const GLcontext *ctx, GLuint n,
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                           GLenum dstType, GLvoid *dest,
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                           GLenum srcType, const GLvoid *source,
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                           const struct gl_pixelstore_attrib *srcPacking,
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                           GLuint transferOps );
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extern void
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_mesa_pack_stencil_span( const GLcontext *ctx, GLuint n,
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                         GLenum dstType, GLvoid *dest, const GLstencil *source,
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                         const struct gl_pixelstore_attrib *dstPacking );
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extern void
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_mesa_unpack_depth_span( const GLcontext *ctx, GLuint n, GLfloat *dest,
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                         GLenum srcType, const GLvoid *source,
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                         const struct gl_pixelstore_attrib *srcPacking );
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extern void
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_mesa_pack_depth_span( const GLcontext *ctx, GLuint n, GLvoid *dest,
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                       GLenum dstType, const GLfloat *depthSpan,
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                       const struct gl_pixelstore_attrib *dstPacking );
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extern void *
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_mesa_unpack_image( GLsizei width, GLsizei height, GLsizei depth,
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                    GLenum format, GLenum type, const GLvoid *pixels,
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                    const struct gl_pixelstore_attrib *unpack );
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#endif