/**
 * FreeRDP: A Remote Desktop Protocol Implementation
 * Color Conversion Routines
 *
 * Copyright 2010 Marc-Andre Moreau <marcandre.moreau@gmail.com>
 * Copyright 2016 Armin Novak <armin.novak@thincast.com>
 * Copyright 2016 Thincast Technologies GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef FREERDP_CODEC_COLOR_H
#define FREERDP_CODEC_COLOR_H

#include <freerdp/api.h>
#include <winpr/wlog.h>
#include <freerdp/log.h>
#define CTAG FREERDP_TAG("codec.color")

#define FREERDP_PIXEL_FORMAT_TYPE_A 0
#define FREERDP_PIXEL_FORMAT_TYPE_ARGB 1
#define FREERDP_PIXEL_FORMAT_TYPE_ABGR 2
#define FREERDP_PIXEL_FORMAT_TYPE_RGBA 3
#define FREERDP_PIXEL_FORMAT_TYPE_BGRA 4

#define FREERDP_PIXEL_FORMAT_IS_ABGR(_format) \
	(FREERDP_PIXEL_FORMAT_TYPE(_format) == FREERDP_PIXEL_FORMAT_TYPE_ABGR)

#define FREERDP_FLIP_NONE 0
#define FREERDP_FLIP_VERTICAL 1
#define FREERDP_FLIP_HORIZONTAL 2

#define FREERDP_PIXEL_FORMAT(_bpp, _type, _a, _r, _g, _b) \
	((_bpp << 24) | (_type << 16) | (_a << 12) | (_r << 8) | (_g << 4) | (_b))

#define FREERDP_PIXEL_FORMAT_TYPE(_format) (((_format) >> 16) & 0x07)

/*** Design considerations
 *
 * The format naming scheme is based on byte position in memory.
 * RGBA for example names a byte array with red on positon 0, green on 1 etc.
 *
 * To read and write the appropriate format from / to memory use ReadColor and
 * WriteColor.
 *
 * The single pixel manipulation functions use an intermediate integer representation
 * that must not be interpreted outside the functions as it is platform dependent.
 *
 * X for alpha channel denotes unused (but existing) alpha channel data.
 */

/* 32bpp formats */
#define PIXEL_FORMAT_ARGB32 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_ARGB, 8, 8, 8, 8)
#define PIXEL_FORMAT_XRGB32 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_ARGB, 0, 8, 8, 8)
#define PIXEL_FORMAT_ABGR32 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_ABGR, 8, 8, 8, 8)
#define PIXEL_FORMAT_XBGR32 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_ABGR, 0, 8, 8, 8)
#define PIXEL_FORMAT_BGRA32 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_BGRA, 8, 8, 8, 8)
#define PIXEL_FORMAT_BGRX32 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_BGRA, 0, 8, 8, 8)
#define PIXEL_FORMAT_RGBA32 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_RGBA, 8, 8, 8, 8)
#define PIXEL_FORMAT_RGBX32 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_RGBA, 0, 8, 8, 8)
#define PIXEL_FORMAT_BGRX32_DEPTH30 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_BGRA, 0, 10, 10, 10)
#define PIXEL_FORMAT_RGBX32_DEPTH30 FREERDP_PIXEL_FORMAT(32, FREERDP_PIXEL_FORMAT_TYPE_RGBA, 0, 10, 10, 10)

/* 24bpp formats */
#define PIXEL_FORMAT_RGB24 FREERDP_PIXEL_FORMAT(24, FREERDP_PIXEL_FORMAT_TYPE_ARGB, 0, 8, 8, 8)
#define PIXEL_FORMAT_BGR24 FREERDP_PIXEL_FORMAT(24, FREERDP_PIXEL_FORMAT_TYPE_ABGR, 0, 8, 8, 8)

/* 16bpp formats */
#define PIXEL_FORMAT_RGB16 FREERDP_PIXEL_FORMAT(16, FREERDP_PIXEL_FORMAT_TYPE_ARGB, 0, 5, 6, 5)
#define PIXEL_FORMAT_BGR16 FREERDP_PIXEL_FORMAT(16, FREERDP_PIXEL_FORMAT_TYPE_ABGR, 0, 5, 6, 5)
#define PIXEL_FORMAT_ARGB15 FREERDP_PIXEL_FORMAT(16, FREERDP_PIXEL_FORMAT_TYPE_ARGB, 1, 5, 5, 5)
#define PIXEL_FORMAT_RGB15 FREERDP_PIXEL_FORMAT(15, FREERDP_PIXEL_FORMAT_TYPE_ARGB, 0, 5, 5, 5)
#define PIXEL_FORMAT_ABGR15 FREERDP_PIXEL_FORMAT(16, FREERDP_PIXEL_FORMAT_TYPE_ABGR, 1, 5, 5, 5)
#define PIXEL_FORMAT_BGR15 FREERDP_PIXEL_FORMAT(15, FREERDP_PIXEL_FORMAT_TYPE_ABGR, 0, 5, 5, 5)

/* 8bpp formats */
#define PIXEL_FORMAT_RGB8 FREERDP_PIXEL_FORMAT(8, FREERDP_PIXEL_FORMAT_TYPE_A, 8, 0, 0, 0)

/* 4 bpp formats */
#define PIXEL_FORMAT_A4 FREERDP_PIXEL_FORMAT(4, FREERDP_PIXEL_FORMAT_TYPE_A, 4, 0, 0, 0)

/* 1bpp formats */
#define PIXEL_FORMAT_MONO FREERDP_PIXEL_FORMAT(1, FREERDP_PIXEL_FORMAT_TYPE_A, 1, 0, 0, 0)

struct gdi_palette
{
	UINT32 format;
	UINT32 palette[256];
};
typedef struct gdi_palette gdiPalette;

#ifdef __cplusplus
extern "C"
{
#endif

	/* Compare two color formats but ignore differences in alpha channel.
	 */
	static INLINE DWORD AreColorFormatsEqualNoAlpha(DWORD first, DWORD second)
	{
		const DWORD mask = ~(8 << 12);
		return (first & mask) == (second & mask);
	}

	/* Color Space Conversions: http://msdn.microsoft.com/en-us/library/ff566496/ */

	/***
	 *
	 * Get a string representation of a color
	 *
	 * @param format The pixel color format
	 *
	 * @return A string representation of format
	 */
	static const char* FreeRDPGetColorFormatName(UINT32 format)
	{
		switch (format)
		{
			/* 32bpp formats */
			case PIXEL_FORMAT_ARGB32:
				return "PIXEL_FORMAT_ARGB32";

			case PIXEL_FORMAT_XRGB32:
				return "PIXEL_FORMAT_XRGB32";

			case PIXEL_FORMAT_ABGR32:
				return "PIXEL_FORMAT_ABGR32";

			case PIXEL_FORMAT_XBGR32:
				return "PIXEL_FORMAT_XBGR32";

			case PIXEL_FORMAT_BGRA32:
				return "PIXEL_FORMAT_BGRA32";

			case PIXEL_FORMAT_BGRX32:
				return "PIXEL_FORMAT_BGRX32";

			case PIXEL_FORMAT_RGBA32:
				return "PIXEL_FORMAT_RGBA32";

			case PIXEL_FORMAT_RGBX32:
				return "PIXEL_FORMAT_RGBX32";

			case PIXEL_FORMAT_BGRX32_DEPTH30:
				return "PIXEL_FORMAT_BGRX32_DEPTH30";

			case PIXEL_FORMAT_RGBX32_DEPTH30:
				return "PIXEL_FORMAT_RGBX32_DEPTH30";

			/* 24bpp formats */
			case PIXEL_FORMAT_RGB24:
				return "PIXEL_FORMAT_RGB24";

			case PIXEL_FORMAT_BGR24:
				return "PIXEL_FORMAT_BGR24";

			/* 16bpp formats */
			case PIXEL_FORMAT_RGB16:
				return "PIXEL_FORMAT_RGB16";

			case PIXEL_FORMAT_BGR16:
				return "PIXEL_FORMAT_BGR16";

			case PIXEL_FORMAT_ARGB15:
				return "PIXEL_FORMAT_ARGB15";

			case PIXEL_FORMAT_RGB15:
				return "PIXEL_FORMAT_RGB15";

			case PIXEL_FORMAT_ABGR15:
				return "PIXEL_FORMAT_ABGR15";

			case PIXEL_FORMAT_BGR15:
				return "PIXEL_FORMAT_BGR15";

			/* 8bpp formats */
			case PIXEL_FORMAT_RGB8:
				return "PIXEL_FORMAT_RGB8";

			/* 4 bpp formats */
			case PIXEL_FORMAT_A4:
				return "PIXEL_FORMAT_A4";

			/* 1bpp formats */
			case PIXEL_FORMAT_MONO:
				return "PIXEL_FORMAT_MONO";

			default:
				return "UNKNOWN";
		}
	}

	/***
	 *
	 * Converts a pixel color in internal representation to its red, green, blue
	 * and alpha components.
	 *
	 * @param color  The color in format internal representation
	 * @param format one of PIXEL_FORMAT_* color format defines
	 * @param _r      red color value
	 * @param _g      green color value
	 * @param _b      blue color value
	 * @param _a      alpha color value
	 * @param palette pallete to use (only used for 8 bit color!)
	 */
	static INLINE void SplitColor(UINT32 color, UINT32 format, BYTE* _r, BYTE* _g, BYTE* _b,
	                              BYTE* _a, const gdiPalette* palette)
	{
		UINT32 tmp;

		switch (format)
		{
			/* 32bpp formats */
			case PIXEL_FORMAT_ARGB32:
				if (_a)
					*_a = (BYTE)(color >> 24);

				if (_r)
					*_r = (BYTE)(color >> 16);

				if (_g)
					*_g = (BYTE)(color >> 8);

				if (_b)
					*_b = (BYTE)color;

				break;

			case PIXEL_FORMAT_XRGB32:
				if (_r)
					*_r = (BYTE)(color >> 16);

				if (_g)
					*_g = (BYTE)(color >> 8);

				if (_b)
					*_b = (BYTE)color;

				if (_a)
					*_a = 0xFF;

				break;

			case PIXEL_FORMAT_ABGR32:
				if (_a)
					*_a = (BYTE)(color >> 24);

				if (_b)
					*_b = (BYTE)(color >> 16);

				if (_g)
					*_g = (BYTE)(color >> 8);

				if (_r)
					*_r = (BYTE)color;

				break;

			case PIXEL_FORMAT_XBGR32:
				if (_b)
					*_b = (BYTE)(color >> 16);

				if (_g)
					*_g = (BYTE)(color >> 8);

				if (_r)
					*_r = (BYTE)color;

				if (_a)
					*_a = 0xFF;

				break;

			case PIXEL_FORMAT_RGBA32:
				if (_r)
					*_r = (BYTE)(color >> 24);

				if (_g)
					*_g = (BYTE)(color >> 16);

				if (_b)
					*_b = (BYTE)(color >> 8);

				if (_a)
					*_a = (BYTE)color;

				break;

			case PIXEL_FORMAT_RGBX32:
				if (_r)
					*_r = (BYTE)(color >> 24);

				if (_g)
					*_g = (BYTE)(color >> 16);

				if (_b)
					*_b = (BYTE)(color >> 8);

				if (_a)
					*_a = 0xFF;

				break;

			case PIXEL_FORMAT_BGRA32:
				if (_b)
					*_b = (BYTE)(color >> 24);

				if (_g)
					*_g = (BYTE)(color >> 16);

				if (_r)
					*_r = (BYTE)(color >> 8);

				if (_a)
					*_a = (BYTE)color;

				break;

			case PIXEL_FORMAT_BGRX32:
				if (_b)
					*_b = (BYTE)(color >> 24);

				if (_g)
					*_g = (BYTE)(color >> 16);

				if (_r)
					*_r = (BYTE)(color >> 8);

				if (_a)
					*_a = 0xFF;

				break;

			/* 24bpp formats */
			case PIXEL_FORMAT_RGB24:
				if (_r)
					*_r = (BYTE)(color >> 16);

				if (_g)
					*_g = (BYTE)(color >> 8);

				if (_b)
					*_b = (BYTE)color;

				if (_a)
					*_a = 0xFF;

				break;

			case PIXEL_FORMAT_BGR24:
				if (_b)
					*_b = (BYTE)(color >> 16);

				if (_g)
					*_g = (BYTE)(color >> 8);

				if (_r)
					*_r = (BYTE)color;

				if (_a)
					*_a = 0xFF;

				break;

			/* 16bpp formats */
			case PIXEL_FORMAT_RGB16:
				if (_r)
				{
					const UINT32 c = (color >> 11) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_r = (BYTE)(val > 255 ? 255 : val);
				}

				if (_g)
				{
					const UINT32 c = (color >> 5) & 0x3F;
					const UINT32 val = (c << 2) + c / 4 / 2;
					*_g = (BYTE)(val > 255 ? 255 : val);
				}

				if (_b)
				{
					const UINT32 c = (color)&0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_b = (BYTE)(val > 255 ? 255 : val);
				}

				if (_a)
					*_a = 0xFF;

				break;

			case PIXEL_FORMAT_BGR16:
				if (_r)
				{
					const UINT32 c = (color)&0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_r = (BYTE)(val > 255 ? 255 : val);
				}

				if (_g)
				{
					const UINT32 c = (color >> 5) & 0x3F;
					const UINT32 val = (c << 2) + c / 4 / 2;
					*_g = (BYTE)(val > 255 ? 255 : val);
				}

				if (_b)
				{
					const UINT32 c = (color >> 11) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_b = (BYTE)(val > 255 ? 255 : val);
				}

				if (_a)
					*_a = 0xFF;

				break;

			case PIXEL_FORMAT_ARGB15:
				if (_r)
				{
					const UINT32 c = (color >> 10) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_r = (BYTE)(val > 255 ? 255 : val);
				}

				if (_g)
				{
					const UINT32 c = (color >> 5) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_g = (BYTE)(val > 255 ? 255 : val);
				}

				if (_b)
				{
					const UINT32 c = (color)&0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_b = (BYTE)(val > 255 ? 255 : val);
				}

				if (_a)
					*_a = color & 0x8000 ? 0xFF : 0x00;

				break;

			case PIXEL_FORMAT_ABGR15:
				if (_r)
				{
					const UINT32 c = (color)&0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_r = (BYTE)(val > 255 ? 255 : val);
				}

				if (_g)
				{
					const UINT32 c = (color >> 5) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_g = (BYTE)(val > 255 ? 255 : val);
				}

				if (_b)
				{
					const UINT32 c = (color >> 10) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_b = (BYTE)(val > 255 ? 255 : val);
				}

				if (_a)
					*_a = color & 0x8000 ? 0xFF : 0x00;

				break;

			/* 15bpp formats */
			case PIXEL_FORMAT_RGB15:
				if (_r)
				{
					const UINT32 c = (color >> 10) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_r = (BYTE)(val > 255 ? 255 : val);
				}

				if (_g)
				{
					const UINT32 c = (color >> 5) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_g = (BYTE)(val > 255 ? 255 : val);
				}

				if (_b)
				{
					const UINT32 c = (color)&0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_b = (BYTE)(val > 255 ? 255 : val);
				}

				if (_a)
					*_a = 0xFF;

				break;

			case PIXEL_FORMAT_BGR15:
				if (_r)
				{
					const UINT32 c = (color)&0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_r = (BYTE)(val > 255 ? 255 : val);
				}

				if (_g)
				{
					const UINT32 c = (color >> 5) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_g = (BYTE)(val > 255 ? 255 : val);
				}

				if (_b)
				{
					const UINT32 c = (color >> 10) & 0x1F;
					const UINT32 val = (c << 3) + c / 4;
					*_b = (BYTE)(val > 255 ? 255 : val);
				}

				if (_a)
					*_a = 0xFF;

				break;

			/* 8bpp formats */
			case PIXEL_FORMAT_RGB8:
				if (color <= 0xFF)
				{
					tmp = palette->palette[color];
					SplitColor(tmp, palette->format, _r, _g, _b, _a, NULL);
				}
				else
				{
					if (_r)
						*_r = 0x00;

					if (_g)
						*_g = 0x00;

					if (_b)
						*_b = 0x00;

					if (_a)
						*_a = 0x00;
				}

				break;

			/* 1bpp formats */
			case PIXEL_FORMAT_MONO:
				if (_r)
					*_r = (color) ? 0xFF : 0x00;

				if (_g)
					*_g = (color) ? 0xFF : 0x00;

				if (_b)
					*_b = (color) ? 0xFF : 0x00;

				if (_a)
					*_a = (color) ? 0xFF : 0x00;

				break;

			/* 4 bpp formats */
			case PIXEL_FORMAT_A4:
			default:
				if (_r)
					*_r = 0x00;

				if (_g)
					*_g = 0x00;

				if (_b)
					*_b = 0x00;

				if (_a)
					*_a = 0x00;

				WLog_ERR(CTAG, "Unsupported format %s", FreeRDPGetColorFormatName(format));
				break;
		}
	}

	/***
	 *
	 * Converts red, green, blue and alpha values to internal representation.
	 *
	 * @param format one of PIXEL_FORMAT_* color format defines
	 * @param r      red color value
	 * @param g      green color value
	 * @param b      blue color value
	 * @param a      alpha color value
	 *
	 * @return       The pixel color in the desired format. Value is in internal
	 *               representation.
	 */
	static INLINE UINT32 FreeRDPGetColor(UINT32 format, BYTE r, BYTE g, BYTE b, BYTE a)
	{
		UINT32 _r = r;
		UINT32 _g = g;
		UINT32 _b = b;
		UINT32 _a = a;
		UINT32 t;

		switch (format)
		{
			/* 32bpp formats */
			case PIXEL_FORMAT_ARGB32:
				return (_a << 24) | (_r << 16) | (_g << 8) | _b;

			case PIXEL_FORMAT_XRGB32:
				return (_r << 16) | (_g << 8) | _b;

			case PIXEL_FORMAT_ABGR32:
				return (_a << 24) | (_b << 16) | (_g << 8) | _r;

			case PIXEL_FORMAT_XBGR32:
				return (_b << 16) | (_g << 8) | _r;

			case PIXEL_FORMAT_RGBA32:
				return (_r << 24) | (_g << 16) | (_b << 8) | _a;

			case PIXEL_FORMAT_RGBX32:
				return (_r << 24) | (_g << 16) | (_b << 8) | _a;

			case PIXEL_FORMAT_BGRA32:
				return (_b << 24) | (_g << 16) | (_r << 8) | _a;

			case PIXEL_FORMAT_BGRX32:
				return (_b << 24) | (_g << 16) | (_r << 8) | _a;

			case PIXEL_FORMAT_RGBX32_DEPTH30:
				// TODO: Not tested
				t = (_r << 22) | (_g << 12) | (_b << 2);
				// NOTE: Swapping byte-order because WriteColor written UINT32 in big-endian
				return ((t & 0xff) << 24) | (((t >> 8) & 0xff) << 16) | (((t >> 16) & 0xff) << 8) | (t >> 24);

			case PIXEL_FORMAT_BGRX32_DEPTH30:
				// NOTE: Swapping b and r channel (unknown reason)
				t = (_r << 22) | (_g << 12) | (_b << 2);
				// NOTE: Swapping byte-order because WriteColor written UINT32 in big-endian
				return ((t & 0xff) << 24) | (((t >> 8) & 0xff) << 16) | (((t >> 16) & 0xff) << 8) | (t >> 24);

			/* 24bpp formats */
			case PIXEL_FORMAT_RGB24:
				return (_r << 16) | (_g << 8) | _b;

			case PIXEL_FORMAT_BGR24:
				return (_b << 16) | (_g << 8) | _r;

			/* 16bpp formats */
			case PIXEL_FORMAT_RGB16:
				return (((_r >> 3) & 0x1F) << 11) | (((_g >> 2) & 0x3F) << 5) | ((_b >> 3) & 0x1F);

			case PIXEL_FORMAT_BGR16:
				return (((_b >> 3) & 0x1F) << 11) | (((_g >> 2) & 0x3F) << 5) | ((_r >> 3) & 0x1F);

			case PIXEL_FORMAT_ARGB15:
				return (((_r >> 3) & 0x1F) << 10) | (((_g >> 3) & 0x1F) << 5) | ((_b >> 3) & 0x1F) |
				       (_a ? 0x8000 : 0x0000);

			case PIXEL_FORMAT_ABGR15:
				return (((_b >> 3) & 0x1F) << 10) | (((_g >> 3) & 0x1F) << 5) | ((_r >> 3) & 0x1F) |
				       (_a ? 0x8000 : 0x0000);

			/* 15bpp formats */
			case PIXEL_FORMAT_RGB15:
				return (((_r >> 3) & 0x1F) << 10) | (((_g >> 3) & 0x1F) << 5) | ((_b >> 3) & 0x1F);

			case PIXEL_FORMAT_BGR15:
				return (((_b >> 3) & 0x1F) << 10) | (((_g >> 3) & 0x1F) << 5) | ((_r >> 3) & 0x1F);

			/* 8bpp formats */
			case PIXEL_FORMAT_RGB8:

			/* 4 bpp formats */
			case PIXEL_FORMAT_A4:

			/* 1bpp formats */
			case PIXEL_FORMAT_MONO:
			default:
				WLog_ERR(CTAG, "Unsupported format %s", FreeRDPGetColorFormatName(format));
				return 0;
		}
	}

	/***
	 *
	 * Returns the number of bits the format format uses.
	 *
	 * @param format One of PIXEL_FORMAT_* defines
	 *
	 * @return The number of bits the format requires per pixel.
	 */
	static INLINE UINT32 GetBitsPerPixel(UINT32 format)
	{
		return (((format) >> 24) & 0x3F);
	}

	/***
	 * @param format one of PIXEL_FORMAT_* color format defines
	 *
	 * @return TRUE if the format has an alpha channel, FALSE otherwise.
	 */
	static INLINE BOOL ColorHasAlpha(UINT32 format)
	{
		UINT32 alpha = (((format) >> 12) & 0x0F);

		if (alpha == 0)
			return FALSE;

		return TRUE;
	}

	/***
	 *
	 * Read a pixel from memory to internal representation
	 *
	 * @param src    The source buffer
	 * @param format The PIXEL_FORMAT_* define the source buffer uses for encoding
	 *
	 * @return The pixel color in internal representation
	 */
	static INLINE UINT32 ReadColor(const BYTE* src, UINT32 format)
	{
		UINT32 color;

		switch (GetBitsPerPixel(format))
		{
			case 32:
				color = ((UINT32)src[0] << 24) | ((UINT32)src[1] << 16) | ((UINT32)src[2] << 8) |
				        src[3];
				break;

			case 24:
				color = ((UINT32)src[0] << 16) | ((UINT32)src[1] << 8) | src[2];
				break;

			case 16:
				color = ((UINT32)src[1] << 8) | src[0];
				break;

			case 15:
				color = ((UINT32)src[1] << 8) | src[0];

				if (!ColorHasAlpha(format))
					color = color & 0x7FFF;

				break;

			case 8:
			case 4:
			case 1:
				color = *src;
				break;

			default:
				WLog_ERR(CTAG, "Unsupported format %s", FreeRDPGetColorFormatName(format));
				color = 0;
				break;
		}

		return color;
	}

	/***
	 *
	 * Write a pixel from internal representation to memory
	 *
	 * @param dst    The destination buffer
	 * @param format The PIXEL_FORMAT_* define for encoding
	 * @param color  The pixel color in internal representation
	 *
	 * @return TRUE if successful, FALSE otherwise
	 */
	static INLINE BOOL WriteColor(BYTE* dst, UINT32 format, UINT32 color)
	{
		switch (GetBitsPerPixel(format))
		{
			case 32:
				dst[0] = (BYTE)(color >> 24);
				dst[1] = (BYTE)(color >> 16);
				dst[2] = (BYTE)(color >> 8);
				dst[3] = (BYTE)color;
				break;

			case 24:
				dst[0] = (BYTE)(color >> 16);
				dst[1] = (BYTE)(color >> 8);
				dst[2] = (BYTE)color;
				break;

			case 16:
				dst[1] = (BYTE)(color >> 8);
				dst[0] = (BYTE)color;
				break;

			case 15:
				if (!ColorHasAlpha(format))
					color = color & 0x7FFF;

				dst[1] = (BYTE)(color >> 8);
				dst[0] = (BYTE)color;
				break;

			case 8:
				dst[0] = (BYTE)color;
				break;

			default:
				WLog_ERR(CTAG, "Unsupported format %s", FreeRDPGetColorFormatName(format));
				return FALSE;
		}

		return TRUE;
	}

	static INLINE BOOL WriteColorIgnoreAlpha(BYTE* dst, UINT32 format, UINT32 color)
	{
		switch (format)
		{
			case PIXEL_FORMAT_ABGR32:
			case PIXEL_FORMAT_ARGB32:
			{
				const UINT32 tmp = (dst[0] << 24) | (color & 0x00FFFFFF);
				return WriteColor(dst, format, tmp);
			}
			case PIXEL_FORMAT_BGRA32:
			case PIXEL_FORMAT_RGBA32:
			{
				const UINT32 tmp = (dst[3]) | (color & 0xFFFFFF00);
				return WriteColor(dst, format, tmp);
			}
			default:
				return WriteColor(dst, format, color);
		}
	}

	/***
	 *
	 * Converts a pixel in internal representation format srcFormat to internal
	 * representation format dstFormat
	 *
	 * @param color      The pixel color in srcFormat representation
	 * @param srcFormat  The PIXEL_FORMAT_* of color
	 * @param dstFormat  The PIXEL_FORMAT_* of the return.
	 * @param palette    pallete to use (only used for 8 bit color!)
	 *
	 * @return           The converted pixel color in dstFormat representation
	 */
	static INLINE UINT32 FreeRDPConvertColor(UINT32 color, UINT32 srcFormat, UINT32 dstFormat,
	                                         const gdiPalette* palette)
	{
		BYTE r = 0;
		BYTE g = 0;
		BYTE b = 0;
		BYTE a = 0;
		SplitColor(color, srcFormat, &r, &g, &b, &a, palette);
		return FreeRDPGetColor(dstFormat, r, g, b, a);
	}

	/***
	 *
	 * Returns the number of bytes the format format uses.
	 *
	 * @param format One of PIXEL_FORMAT_* defines
	 *
	 * @return The number of bytes the format requires per pixel.
	 */
	static INLINE UINT32 GetBytesPerPixel(UINT32 format)
	{
		return (GetBitsPerPixel(format) + 7) / 8;
	}

	/***
	 *
	 * @param nWidth    width to copy in pixels
	 * @param nHeight   height to copy in pixels
	 * @param data      source buffer, must be (nWidth + 7) / 8 bytes long
	 *
	 * @return          A buffer allocated with _aligned_malloc(width * height, 16)
	 *                  if successufl, NULL otherwise.
	 */
	FREERDP_API BYTE* freerdp_glyph_convert(UINT32 width, UINT32 height, const BYTE* data);

	/***
	 *
	 * @param pDstData  destination buffer
	 * @param DstFormat destination buffer format
	 * @param nDstStep  destination buffer stride (line in bytes) 0 for default
	 * @param nXDst     destination buffer offset x
	 * @param nYDst     destination buffer offset y
	 * @param nWidth    width to copy in pixels
	 * @param nHeight   height to copy in pixels
	 * @param pSrcData  source buffer, must be (nWidth + 7) / 8 bytes long
	 * @param backColor The background color in internal representation format
	 * @param foreColor The foreground color in internal representation format
	 * @param palette   palette to use (only used for 8 bit color!)
	 *
	 * @return          TRUE if success, FALSE otherwise
	 */
	FREERDP_API BOOL freerdp_image_copy_from_monochrome(BYTE* pDstData, UINT32 DstFormat,
	                                                    UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
	                                                    UINT32 nWidth, UINT32 nHeight,
	                                                    const BYTE* pSrcData, UINT32 backColor,
	                                                    UINT32 foreColor,
	                                                    const gdiPalette* palette);

	/***
	 *
	 * @param pDstData      destination buffer
	 * @param DstFormat     destination buffer format
	 * @param nDstStep      destination buffer stride (line in bytes) 0 for default
	 * @param nXDst         destination buffer offset x
	 * @param nYDst         destination buffer offset y
	 * @param nWidth        width to copy in pixels
	 * @param nHeight       height to copy in pixels
	 * @param bitsColor     icon's image data buffer
	 * @param cbBitsColor   length of the image data buffer in bytes
	 * @param bitsMask      icon's 1bpp image mask buffer
	 * @param cbBitsMask    length of the image mask buffer in bytes
	 * @param colorTable    icon's image color table
	 * @param cbBitsColor   length of the image color table buffer in bytes
	 * @param bpp           color image data bits per pixel
	 *
	 * @return              TRUE if success, FALSE otherwise
	 */
	FREERDP_API BOOL freerdp_image_copy_from_icon_data(BYTE* pDstData, UINT32 DstFormat,
	                                                   UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
	                                                   UINT16 nWidth, UINT16 nHeight,
	                                                   const BYTE* bitsColor, UINT16 cbBitsColor,
	                                                   const BYTE* bitsMask, UINT16 cbBitsMask,
	                                                   const BYTE* colorTable, UINT16 cbColorTable,
	                                                   UINT32 bpp);

	/***
	 *
	 * @param pDstData      destination buffer
	 * @param DstFormat     destination buffer format
	 * @param nDstStep      destination buffer stride (line in bytes) 0 for default
	 * @param nXDst         destination buffer offset x
	 * @param nYDst         destination buffer offset y
	 * @param nWidth        width to copy in pixels
	 * @param nHeight       height to copy in pixels
	 * @param xorMask       XOR mask buffer
	 * @param xorMaskLength XOR mask length in bytes
	 * @param andMask       AND mask buffer
	 * @param andMaskLength AND mask length in bytes
	 * @param xorBpp        XOR bits per pixel
	 * @param palette       palette to use (only used for 8 bit color!)
	 *
	 * @return              TRUE if success, FALSE otherwise
	 */
	FREERDP_API BOOL freerdp_image_copy_from_pointer_data(
	    BYTE* pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
	    UINT32 nWidth, UINT32 nHeight, const BYTE* xorMask, UINT32 xorMaskLength,
	    const BYTE* andMask, UINT32 andMaskLength, UINT32 xorBpp, const gdiPalette* palette);

	/***
	 *
	 * @param pDstData  destination buffer
	 * @param DstFormat destination buffer format
	 * @param nDstStep  destination buffer stride (line in bytes) 0 for default
	 * @param nXDst     destination buffer offset x
	 * @param nYDst     destination buffer offset y
	 * @param nWidth    width to copy in pixels
	 * @param nHeight   height to copy in pixels
	 * @param pSrcData  source buffer
	 * @param SrcFormat source buffer format
	 * @param nSrcStep  source buffer stride (line in bytes) 0 for default
	 * @param nXSrc     source buffer x offset in pixels
	 * @param nYSrc     source buffer y offset in pixels
	 * @param palette   palette to use (only used for 8 bit color!)
	 * @param flags     Image flipping flags FREERDP_FLIP_NONE et al
	 *
	 * @return          TRUE if success, FALSE otherwise
	 */
	FREERDP_API BOOL freerdp_image_copy(BYTE* pDstData, DWORD DstFormat, UINT32 nDstStep,
	                                    UINT32 nXDst, UINT32 nYDst, UINT32 nWidth, UINT32 nHeight,
	                                    const BYTE* pSrcData, DWORD SrcFormat, UINT32 nSrcStep,
	                                    UINT32 nXSrc, UINT32 nYSrc, const gdiPalette* palette,
	                                    UINT32 flags);

	/***
	 *
	 * @param pDstData   destination buffer
	 * @param DstFormat  destination buffer format
	 * @param nDstStep   destination buffer stride (line in bytes) 0 for default
	 * @param nXDst      destination buffer offset x
	 * @param nYDst      destination buffer offset y
	 * @param nDstWidth  width of destination in pixels
	 * @param nDstHeight height of destination in pixels
	 * @param pSrcData   source buffer
	 * @param SrcFormat  source buffer format
	 * @param nSrcStep   source buffer stride (line in bytes) 0 for default
	 * @param nXSrc      source buffer x offset in pixels
	 * @param nYSrc      source buffer y offset in pixels
	 * @param nSrcWidth  width of source in pixels
	 * @param nSrcHeight height of source in pixels
	 *
	 * @return          TRUE if success, FALSE otherwise
	 */
	FREERDP_API BOOL freerdp_image_scale(BYTE* pDstData, DWORD DstFormat, UINT32 nDstStep,
	                                     UINT32 nXDst, UINT32 nYDst, UINT32 nDstWidth,
	                                     UINT32 nDstHeight, const BYTE* pSrcData, DWORD SrcFormat,
	                                     UINT32 nSrcStep, UINT32 nXSrc, UINT32 nYSrc,
	                                     UINT32 nSrcWidth, UINT32 nSrcHeight);

	/***
	 *
	 * @param pDstData  destionation buffer
	 * @param DstFormat destionation buffer format
	 * @param nDstStep  destionation buffer stride (line in bytes) 0 for default
	 * @param nXDst     destination buffer offset x
	 * @param nYDst     destination buffer offset y
	 * @param nWidth    width to copy in pixels
	 * @param nHeight   height to copy in pixels
	 * @param color     Pixel color in DstFormat (internal representation format,
	 *                  use FreeRDPGetColor to create)
	 *
	 * @return          TRUE if success, FALSE otherwise
	 */
	FREERDP_API BOOL freerdp_image_fill(BYTE* pDstData, DWORD DstFormat, UINT32 nDstStep,
	                                    UINT32 nXDst, UINT32 nYDst, UINT32 nWidth, UINT32 nHeight,
	                                    UINT32 color);

#if !defined(__APPLE__)
#define GetColorFormatName FreeRDPGetColorFormatName
#define GetColor FreeRDPGetColor
#define ConvertColor FreeRDPConvertColor
#endif

#ifdef __cplusplus
}
#endif

#endif /* FREERDP_CODEC_COLOR_H */
