c37002b4ea
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2517 a95241bf-73f2-0310-859d-f6bbb57e9c96
226 lines
5.1 KiB
C++
226 lines
5.1 KiB
C++
//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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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 in
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// 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 OR
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// 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 THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: ServerBitmap.cpp
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// Author: DarkWyrm <bpmagic@columbus.rr.com>
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// Description: Bitmap class used by the server
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//
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//------------------------------------------------------------------------------
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#include "ServerBitmap.h"
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/*!
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\brief Constructor called by the BitmapManager (only).
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\param rect Size of the bitmap.
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\param space Color space of the bitmap
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\param flags Various bitmap flags to tweak the bitmap as defined in Bitmap.h
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\param bytesperline Number of bytes in each row. -1 implies the default value. Any
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value less than the the default will less than the default will be overridden, but any value
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greater than the default will result in the number of bytes specified.
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\param screen Screen assigned to the bitmap.
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*/
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ServerBitmap::ServerBitmap(BRect rect,color_space space, int32 flags,
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int32 bytesperline=-1, screen_id screen=B_MAIN_SCREEN_ID)
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{
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_initialized=false;
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_area=B_ERROR;
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_width=rect.IntegerWidth()+1;
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_height=rect.IntegerHeight()+1;
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_space=space;
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_area=B_ERROR;
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_buffer=NULL;
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_HandleSpace(space, bytesperline);
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}
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//! Copy constructor does not copy the buffer.
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ServerBitmap::ServerBitmap(const ServerBitmap *bmp)
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{
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_initialized=false;
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_area=B_ERROR;
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_buffer=NULL;
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if(bmp)
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{
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_width=bmp->_width;
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_height=bmp->_height;
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_bytesperrow=bmp->_bytesperrow;
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_space=bmp->_space;
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_flags=bmp->_flags;
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_bpp=bmp->_bpp;
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}
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else
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{
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_width=0;
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_height=0;
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_bytesperrow=0;
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_space=B_NO_COLOR_SPACE;
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_flags=0;
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_bpp=0;
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}
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}
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/*!
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\brief Empty. Defined for subclasses.
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*/
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ServerBitmap::~ServerBitmap(void)
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{
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}
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/*!
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\brief Gets the number of bytes occupied by the bitmap, including padding bytes.
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\return The number of bytes occupied by the bitmap, including padding.
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*/
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uint32 ServerBitmap::BitsLength(void)
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{
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return (uint32)(_bytesperrow*_height);
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}
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/*!
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\brief Internal function used to translate color space values to appropriate internal
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values.
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\param space Color space for the bitmap.
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\param bytesperline Number of bytes per row.
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*/
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void ServerBitmap::_HandleSpace(color_space space, int32 bytesperline=-1)
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{
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// Big convoluted mess just to handle every color space and dword align
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// the buffer
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switch(space)
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{
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// Buffer is dword-aligned, so nothing need be done
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// aside from allocate the memory
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case B_RGB32:
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case B_RGBA32:
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case B_RGB32_BIG:
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case B_RGBA32_BIG:
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case B_UVL32:
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case B_UVLA32:
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case B_LAB32:
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case B_LABA32:
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case B_HSI32:
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case B_HSIA32:
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case B_HSV32:
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case B_HSVA32:
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case B_HLS32:
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case B_HLSA32:
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case B_CMY32:
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case B_CMYA32:
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case B_CMYK32:
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// 24-bit = 32-bit with extra 8 bits ignored
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case B_RGB24_BIG:
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case B_RGB24:
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case B_LAB24:
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case B_UVL24:
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case B_HSI24:
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case B_HSV24:
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case B_HLS24:
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case B_CMY24:
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{
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if(bytesperline<(_width*4))
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_bytesperrow=_width*4;
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else
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_bytesperrow=bytesperline;
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_bpp=32;
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break;
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}
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// Calculate size and dword-align
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// 1-bit
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case B_GRAY1:
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{
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int32 numbytes=_width>>3;
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if((_width % 8) != 0)
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numbytes++;
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if(bytesperline<numbytes)
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{
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for(int8 i=0;i<4;i++)
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{
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if( (numbytes+i)%4==0)
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{
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_bytesperrow=numbytes+i;
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break;
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}
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}
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}
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else
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_bytesperrow=bytesperline;
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_bpp=1;
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}
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// 8-bit
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case B_CMAP8:
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case B_GRAY8:
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case B_YUV411:
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case B_YUV420:
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case B_YCbCr422:
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case B_YCbCr411:
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case B_YCbCr420:
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case B_YUV422:
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{
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if(bytesperline<_width)
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{
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for(int8 i=0;i<4;i++)
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{
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if( (_width+i)%4==0)
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{
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_bytesperrow=_width+i;
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break;
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}
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}
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}
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else
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_bytesperrow=bytesperline;
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_bpp=8;
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break;
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}
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// 16-bit
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case B_YUV9:
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case B_YUV12:
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case B_RGB15:
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case B_RGBA15:
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case B_RGB16:
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case B_RGB16_BIG:
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case B_RGB15_BIG:
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case B_RGBA15_BIG:
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case B_YCbCr444:
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case B_YUV444:
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{
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if(bytesperline<_width*2)
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{
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if( (_width*2) % 4 !=0)
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_bytesperrow=(_width+1)*2;
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else
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_bytesperrow=_width*2;
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}
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else
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_bytesperrow=bytesperline;
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_bpp=16;
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break;
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}
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case B_NO_COLOR_SPACE:
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_bpp=0;
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break;
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}
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}
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