forked from 0ad/0ad
janwas
871cdb6ef9
- error codes now accessed as ERR::NO_MEM, INFO::OK etc. - no more X-macros => the above are now recognized by visual assist - error codes are defined by the module originating them (lib_errors has some generic ones) => no full rebuild when adding some - error descriptions are now in C++ files => can be changed without full rebuild added AT_STARTUP in lib.h. This was SVN commit r4374.
86 lines
2.8 KiB
C
86 lines
2.8 KiB
C
/**
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* =========================================================================
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* File : tex_internal.h
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* Project : 0 A.D.
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* Description : private texture loader helper functions
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*
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* @author Jan.Wassenberg@stud.uni-karlsruhe.de
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* =========================================================================
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*/
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/*
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* Copyright (c) 2006 Jan Wassenberg
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*
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* Redistribution and/or modification are also permitted under the
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* terms of the GNU General Public License as published by the
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* Free Software Foundation (version 2 or later, at your option).
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef TEX_INTERNAL_H__
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#define TEX_INTERNAL_H__
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#include "lib/res/res.h" // error codes and mem.h
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#include "lib/allocators.h" // DynArray
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/**
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* check if the given texture format is acceptable: 8bpp grey,
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* 24bpp color or 32bpp color+alpha (BGR / upside down are permitted).
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* basically, this is the "plain" format understood by all codecs and
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* tex_codec_plain_transform.
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* @param bpp bits per pixel
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* @param flags TexFlags
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* @return LibError
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**/
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extern LibError tex_validate_plain_format(uint bpp, uint flags);
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/**
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* indicate if the two vertical orientations match.
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*
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* used by tex_codec.
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*
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* @param src_flags TexFlags, used to extract the orientation.
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* we ask for this instead of src_orientation so callers don't have to
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* mask off TEX_ORIENTATION.
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* @param dst_orientation orientation to compare against.
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* can be one of TEX_BOTTOM_UP, TEX_TOP_DOWN, or 0 for the
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* "global orientation".
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* @return bool
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**/
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extern bool tex_orientations_match(uint src_flags, uint dst_orientation);
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/**
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* decode an in-memory texture file into texture object.
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*
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* split out of tex_load to ease resource cleanup and allow
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* decoding images without needing to write out to disk.
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*
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* @param data input data
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* @param data_size its size [bytes]
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* @param dtor the function used to release it when the texture object is
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* freed (can be NULL). note: this is necessary because the Tex object
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* assumes ownership (necessary due to Tex.hm).
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* @param t output texture object.
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* @return LibError.
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**/
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extern LibError tex_decode(const u8* data, size_t data_size, MEM_DTOR dtor, Tex* t);
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/**
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* encode a texture into a memory buffer in the desired file format.
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*
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* @param t input texture object
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* @param fn filename; only used to determine the desired file format
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* (via extension)
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* @param da output memory array. allocated here; caller must free it
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* when no longer needed. invalid unless function succeeds.
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* @return LibError
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**/
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extern LibError tex_encode(Tex* t, const char* fn, DynArray* da);
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#endif // #ifndef TEX_INTERNAL_H__
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