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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef BACKENDS_GRAPHICS_ATARI_C2P_ASM_H
#define BACKENDS_GRAPHICS_ATARI_C2P_ASM_H
#include "common/scummsys.h"
extern "C" {
/**
* Chunky to planar conversion routine. Converts a chunky (byte) buffer into eight bitplanes.
* Optimized for surface-to-surface copy with the same pitch.
*
* @param pChunky chunky buffer start
* @param pChunkyEnd chunky buffer end (past-the-end iterator)
* @param pScreen bitplane screen start
*/
void asm_c2p1x1_8(const byte *pChunky, const byte *pChunkyEnd, byte *pScreen);
/**
* Chunky to planar conversion routine. Converts a chunky (byte) buffer into eight bitplanes.
* Optimized for surface-to-surface copy with the double screen pitch (typically 320x480).
*
* @param pChunky chunky buffer start
* @param pChunkyEnd chunky buffer end (past-the-end iterator)
* @param pScreen bitplane screen start
* @param screenPitch bitplane screen width (in bytes)
*/
void asm_c2p1x1_8_tt(const byte *pChunky, const byte *pChunkyEnd, byte *pScreen, uint32 screenPitch);
/**
* Chunky to planar conversion routine. Converts a chunky (byte) buffer into eight bitplanes.
* Optimized for arbitrary rectangle position and dimension (16px aligned).
*
* @param pChunky chunky buffer at rectangle's [X1, Y1] position
* @param pChunkyEnd chunky buffer at rectangle's [X2, Y2] position (included)
* @param chunkyWidth rectangle width
* @param chunkyPitch chunky buffer width (in bytes)
* @param pScreen bitplane screen at rectangle's [X1, Y1] position
* @param screenPitch bitplane screen width (in bytes)
*/
void asm_c2p1x1_8_rect(const byte *pChunky, const byte *pChunkyEnd, uint32 chunkyWidth, uint32 chunkyPitch, byte *pScreen, uint32 screenPitch);
/**
* Chunky to planar conversion routine. Converts a chunky (byte) buffer into four bitplanes.
* Optimized for surface-to-surface copy with the same pitch.
*
* @param pChunky chunky buffer start
* @param pChunkyEnd chunky buffer end (past-the-end iterator)
* @param pScreen bitplane screen start
*/
void asm_c2p1x1_4(const byte *pChunky, const byte *pChunkyEnd, byte *pScreen);
/**
* Chunky to planar conversion routine. Converts a chunky (byte) buffer into four bitplanes.
* Optimized for arbitrary rectangle position and dimension (16px aligned).
*
* @param pChunky chunky buffer at rectangle's [X1, Y1] position
* @param pChunkyEnd chunky buffer at rectangle's [X2, Y2] position (included)
* @param chunkyWidth rectangle width
* @param chunkyPitch chunky buffer width (in bytes)
* @param pScreen bitplane screen at rectangle's [X1, Y1] position
* @param screenPitch bitplane screen width (in bytes)
*/
void asm_c2p1x1_4_rect(const byte *pChunky, const byte *pChunkyEnd, uint32 chunkyWidth, uint32 chunkyPitch, byte *pScreen, uint32 screenPitch);
}
#endif
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