//------------------------------------------------------------------------------
//      Copyright (c) 2001-2004, Haiku
//
//      Permission is hereby granted, free of charge, to any person obtaining a
//      copy of this software and associated documentation files (the "Software"),
//      to deal in the Software without restriction, including without limitation
//      the rights to use, copy, modify, merge, publish, distribute, sublicense,
//      and/or sell copies of the Software, and to permit persons to whom the
//      Software is furnished to do so, subject to the following conditions:
//
//      The above copyright notice and this permission notice shall be included in
//      all copies or substantial portions of the Software.
//
//      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//      AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
//      FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
//      DEALINGS IN THE SOFTWARE.
//
//      File Name:              GraphicsDefs.cpp
//      Author:                 DarkWyrm <bpmagic@columbus.rr.com>
//                                      Caz <turok2@currantbun.com>
//                                      Axel Dörfler <axeld@pinc-software.de>
//      Description:    Graphics functions and variables for the Interface Kit
//
//------------------------------------------------------------------------------

#include <GraphicsDefs.h>

// patterns
const pattern B_SOLID_HIGH = {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}};
const pattern B_MIXED_COLORS = {{0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55}};
const pattern B_SOLID_LOW = {{0, 0, 0, 0, 0, 0, 0, 0}};

// colors
const rgb_color B_TRANSPARENT_COLOR = {0x77, 0x74, 0x77, 0x00};
const rgb_color B_TRANSPARENT_32_BIT = {0x77, 0x74, 0x77, 0x00};
const uint8 B_TRANSPARENT_8_BIT = 0xff;

const uint8 B_TRANSPARENT_MAGIC_CMAP8 = 0xff;
const uint16 B_TRANSPARENT_MAGIC_RGBA15 = 0x39ce;
const uint16 B_TRANSPARENT_MAGIC_RGBA15_BIG = 0xce39;
const uint32 B_TRANSPARENT_MAGIC_RGBA32 = 0x00777477;
const uint32 B_TRANSPARENT_MAGIC_RGBA32_BIG = 0x77747700;

// misc.
const struct screen_id B_MAIN_SCREEN_ID = {0};


status_t
get_pixel_size_for(color_space space, size_t *pixelChunk, size_t *rowAlignment, size_t *pixelsPerChunk)
{
        status_t status = B_OK;
        int32 bytesPerPixel = 0;
        int32 pixPerChunk = 0;
        switch (space) {
                // supported
                case B_RGBA64: case B_RGBA64_BIG:
                        bytesPerPixel = 8;
                        pixPerChunk = 2;
                        break;
                case B_RGB48: case B_RGB48_BIG:
                        bytesPerPixel = 6;
                        pixPerChunk = 2;
                        break;
                case B_RGB32: case B_RGBA32:
                case B_RGB32_BIG: case B_RGBA32_BIG:
                case B_UVL32: case B_UVLA32:
                case B_LAB32: case B_LABA32:
                case B_HSI32: case B_HSIA32:
                case B_HSV32: case B_HSVA32:
                case B_HLS32: case B_HLSA32:
                case B_CMY32: case B_CMYA32: case B_CMYK32:
                        bytesPerPixel = 4;
                        pixPerChunk = 1;
                        break;
                case B_RGB24: case B_RGB24_BIG:
                case B_UVL24: case B_LAB24: case B_HSI24:
                case B_HSV24: case B_HLS24: case B_CMY24:
                        bytesPerPixel = 3;
                        pixPerChunk = 1;
                        break;
                case B_RGB16:           case B_RGB15:           case B_RGBA15:
                case B_RGB16_BIG:       case B_RGB15_BIG:       case B_RGBA15_BIG:
                        bytesPerPixel = 2;
                        pixPerChunk = 1;
                        break;
                case B_CMAP8: case B_GRAY8:
                        bytesPerPixel = 1;
                        pixPerChunk = 1;
                        break;
                case B_GRAY1:
                        bytesPerPixel = 1;
                        pixPerChunk = 8;
                        break;
                case B_YCbCr422: case B_YUV422:
                        bytesPerPixel = 4;
                        pixPerChunk = 2;
                        break;
                case B_YCbCr411: case B_YUV411:
                        bytesPerPixel = 12;
                        pixPerChunk = 8;
                        break;
                case B_YCbCr444: case B_YUV444:
                        bytesPerPixel = 3;
                        pixPerChunk = 1;
                        break;
                // TODO: I don't know if it's correct,
                // but beos reports B_YUV420 to be
                // 6 bytes per pixel and 4 pixel per chunk      
                case B_YCbCr420: case B_YUV420:
                        bytesPerPixel = 3;
                        pixPerChunk = 2;
                        break;
                case B_YUV9:
                        bytesPerPixel = 5;
                        pixPerChunk = 4;
                        break;
                case B_YUV12:
                        bytesPerPixel = 6;
                        pixPerChunk = 4;
                        break;
                // unsupported
                case B_NO_COLOR_SPACE:
                default:
                        status = B_BAD_VALUE;
                        break;
        }
                
        if (pixelChunk != NULL)
                *pixelChunk = bytesPerPixel;
        
        size_t alignment = 0;
        if (bytesPerPixel != 0) {
                alignment = (sizeof(int) % bytesPerPixel) * sizeof(int);
                if (alignment < sizeof(int))
                        alignment = sizeof(int);
        }       
        
        if (rowAlignment!= NULL)
                *rowAlignment = alignment;
                
        if (pixelsPerChunk!= NULL)
                *pixelsPerChunk = pixPerChunk;
                
        return status;
}


bool
bitmaps_support_space(color_space space, uint32 *supportFlags)
{
        // TODO: fill supportFlags with the supported flags:
        // - B_VIEWS_SUPPORT_DRAW_BITMAP
        // - B_BITMAPS_SUPPORT_ATTACHED_VIEWS
        bool result = false;
        switch (space) {
                // supported
                case B_RGBA64:          case B_RGBA64_BIG:
                case B_RGB48:           case B_RGB48_BIG:
                case B_RGB32:           case B_RGBA32:          case B_RGB24:
                case B_RGB32_BIG:       case B_RGBA32_BIG:      case B_RGB24_BIG:
                case B_RGB16:           case B_RGB15:           case B_RGBA15:
                case B_RGB16_BIG:       case B_RGB15_BIG:       case B_RGBA15_BIG:
                case B_CMAP8:           case B_GRAY8:           case B_GRAY1:
                case B_YCbCr422: case B_YCbCr411: case B_YCbCr444: case B_YCbCr420:
                case B_YUV422: case B_YUV411: case B_YUV444: case B_YUV420:
                case B_UVL24: case B_UVL32: case B_UVLA32:
                case B_LAB24: case B_LAB32: case B_LABA32:
                case B_HSI24: case B_HSI32: case B_HSIA32:
                case B_HSV24: case B_HSV32: case B_HSVA32:
                case B_HLS24: case B_HLS32: case B_HLSA32:
                case B_CMY24: case B_CMY32: case B_CMYA32: case B_CMYK32:
                        result = true;
                        break;
                // unsupported
                case B_NO_COLOR_SPACE:
                case B_YUV9: case B_YUV12:
                        break;
        }
        return result;
}