FreeRDP/libfreerdp/gdi/bitmap.c
akallabeth fb90ac280a Refactored color.h
* Remove implementations from header
* Rename functions to be FreeRDP specific
* Add deprecation define for old names
* Fixed missing includes
2022-04-28 08:40:47 +02:00

643 lines
14 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* GDI Bitmap Functions
*
* Copyright 2010-2011 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.
*/
#include <freerdp/config.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <freerdp/api.h>
#include <freerdp/freerdp.h>
#include <freerdp/gdi/gdi.h>
#include <freerdp/codec/color.h>
#include <freerdp/gdi/region.h>
#include <freerdp/gdi/bitmap.h>
#include <freerdp/log.h>
#include <freerdp/gdi/shape.h>
#include "brush.h"
#include "clipping.h"
#include "../gdi/gdi.h"
#define TAG FREERDP_TAG("gdi.bitmap")
/**
* Get pixel at the given coordinates.\n
* @msdn{dd144909}
* @param hdc device context
* @param nXPos pixel x position
* @param nYPos pixel y position
* @return pixel color
*/
UINT32 gdi_GetPixel(HGDI_DC hdc, UINT32 nXPos, UINT32 nYPos)
{
HGDI_BITMAP hBmp = (HGDI_BITMAP)hdc->selectedObject;
BYTE* data =
&(hBmp->data[(nYPos * hBmp->scanline) + nXPos * FreeRDPGetBytesPerPixel(hBmp->format)]);
return FreeRDPReadColor(data, hBmp->format);
}
BYTE* gdi_GetPointer(HGDI_BITMAP hBmp, UINT32 X, UINT32 Y)
{
UINT32 bpp = FreeRDPGetBytesPerPixel(hBmp->format);
return &hBmp->data[(Y * hBmp->width * bpp) + X * bpp];
}
/**
* Set pixel at the given coordinates.\n
* @msdn{dd145078}
* @param hdc device context
* @param X pixel x position
* @param Y pixel y position
* @param crColor new pixel color
* @return
*/
static INLINE UINT32 gdi_SetPixelBmp(HGDI_BITMAP hBmp, UINT32 X, UINT32 Y, UINT32 crColor)
{
BYTE* p = &hBmp->data[(Y * hBmp->scanline) + X * FreeRDPGetBytesPerPixel(hBmp->format)];
FreeRDPWriteColor(p, hBmp->format, crColor);
return crColor;
}
UINT32 gdi_SetPixel(HGDI_DC hdc, UINT32 X, UINT32 Y, UINT32 crColor)
{
HGDI_BITMAP hBmp = (HGDI_BITMAP)hdc->selectedObject;
return gdi_SetPixelBmp(hBmp, X, Y, crColor);
}
/**
* Create a new bitmap with the given width, height, color format and pixel buffer.\n
* @msdn{dd183485}
* @param nWidth width
* @param nHeight height
* @param cBitsPerPixel bits per pixel
* @param data pixel buffer
* @param fkt_free The function used for deallocation of the buffer, NULL for none.
* @return new bitmap
*/
HGDI_BITMAP gdi_CreateBitmap(UINT32 nWidth, UINT32 nHeight, UINT32 format, BYTE* data)
{
return gdi_CreateBitmapEx(nWidth, nHeight, format, 0, data, _aligned_free);
}
HGDI_BITMAP gdi_CreateBitmapEx(UINT32 nWidth, UINT32 nHeight, UINT32 format, UINT32 stride,
BYTE* data, void (*fkt_free)(void*))
{
HGDI_BITMAP hBitmap = (HGDI_BITMAP)calloc(1, sizeof(GDI_BITMAP));
if (!hBitmap)
return NULL;
hBitmap->objectType = GDIOBJECT_BITMAP;
hBitmap->format = format;
if (stride > 0)
hBitmap->scanline = stride;
else
hBitmap->scanline = nWidth * FreeRDPGetBytesPerPixel(hBitmap->format);
hBitmap->width = nWidth;
hBitmap->height = nHeight;
hBitmap->data = data;
hBitmap->free = fkt_free;
return hBitmap;
}
/**
* Create a new bitmap of the given width and height compatible with the current device context.\n
* @msdn{dd183488}
* @param hdc device context
* @param nWidth width
* @param nHeight height
* @return new bitmap
*/
HGDI_BITMAP gdi_CreateCompatibleBitmap(HGDI_DC hdc, UINT32 nWidth, UINT32 nHeight)
{
HGDI_BITMAP hBitmap = (HGDI_BITMAP)calloc(1, sizeof(GDI_BITMAP));
if (!hBitmap)
return NULL;
hBitmap->objectType = GDIOBJECT_BITMAP;
hBitmap->format = hdc->format;
hBitmap->width = nWidth;
hBitmap->height = nHeight;
hBitmap->data =
_aligned_malloc(nWidth * nHeight * FreeRDPGetBytesPerPixel(hBitmap->format) * 1ULL, 16);
hBitmap->free = _aligned_free;
if (!hBitmap->data)
{
free(hBitmap);
return NULL;
}
hBitmap->scanline = nWidth * FreeRDPGetBytesPerPixel(hBitmap->format);
return hBitmap;
}
static BOOL op_not(UINT32* stack, UINT32* stackp)
{
if (!stack || !stackp)
return FALSE;
if (*stackp < 1)
return FALSE;
stack[(*stackp) - 1] = ~stack[(*stackp) - 1];
return TRUE;
}
static BOOL op_and(UINT32* stack, UINT32* stackp)
{
if (!stack || !stackp)
return FALSE;
if (*stackp < 2)
return FALSE;
(*stackp)--;
stack[(*stackp) - 1] &= stack[(*stackp)];
return TRUE;
}
static BOOL op_or(UINT32* stack, UINT32* stackp)
{
if (!stack || !stackp)
return FALSE;
if (*stackp < 2)
return FALSE;
(*stackp)--;
stack[(*stackp) - 1] |= stack[(*stackp)];
return TRUE;
}
static BOOL op_xor(UINT32* stack, UINT32* stackp)
{
if (!stack || !stackp)
return FALSE;
if (*stackp < 2)
return FALSE;
(*stackp)--;
stack[(*stackp) - 1] ^= stack[(*stackp)];
return TRUE;
}
static UINT32 process_rop(UINT32 src, UINT32 dst, UINT32 pat, const char* rop, UINT32 format)
{
UINT32 stack[10] = { 0 };
UINT32 stackp = 0;
while (*rop != '\0')
{
char op = *rop++;
switch (op)
{
case '0':
stack[stackp++] = FreeRDPGetColor(format, 0, 0, 0, 0xFF);
break;
case '1':
stack[stackp++] = FreeRDPGetColor(format, 0xFF, 0xFF, 0xFF, 0xFF);
break;
case 'D':
stack[stackp++] = dst;
break;
case 'S':
stack[stackp++] = src;
break;
case 'P':
stack[stackp++] = pat;
break;
case 'x':
op_xor(stack, &stackp);
break;
case 'a':
op_and(stack, &stackp);
break;
case 'o':
op_or(stack, &stackp);
break;
case 'n':
op_not(stack, &stackp);
break;
default:
break;
}
}
return stack[0];
}
static INLINE BOOL BitBlt_write(HGDI_DC hdcDest, HGDI_DC hdcSrc, INT32 nXDest, INT32 nYDest,
INT32 nXSrc, INT32 nYSrc, INT32 x, INT32 y, BOOL useSrc,
BOOL usePat, UINT32 style, const char* rop,
const gdiPalette* palette)
{
UINT32 dstColor;
UINT32 colorA;
UINT32 colorB = 0;
UINT32 colorC = 0;
const INT32 dstX = nXDest + x;
const INT32 dstY = nYDest + y;
BYTE* dstp = gdi_get_bitmap_pointer(hdcDest, dstX, dstY);
if (!dstp)
{
WLog_ERR(TAG, "dstp=%p", (const void*)dstp);
return FALSE;
}
colorA = FreeRDPReadColor(dstp, hdcDest->format);
if (useSrc)
{
const BYTE* srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc + x, nYSrc + y);
if (!srcp)
{
WLog_ERR(TAG, "srcp=%p", (const void*)srcp);
return FALSE;
}
colorC = FreeRDPReadColor(srcp, hdcSrc->format);
colorC = FreeRDPConvertColor(colorC, hdcSrc->format, hdcDest->format, palette);
}
if (usePat)
{
switch (style)
{
case GDI_BS_SOLID:
colorB = hdcDest->brush->color;
break;
case GDI_BS_HATCHED:
case GDI_BS_PATTERN:
{
const BYTE* patp = gdi_get_brush_pointer(hdcDest, nXDest + x, nYDest + y);
if (!patp)
{
WLog_ERR(TAG, "patp=%p", (const void*)patp);
return FALSE;
}
colorB = FreeRDPReadColor(patp, hdcDest->format);
}
break;
default:
break;
}
}
dstColor = process_rop(colorC, colorA, colorB, rop, hdcDest->format);
return FreeRDPWriteColor(dstp, hdcDest->format, dstColor);
}
static BOOL adjust_src_coordinates(HGDI_DC hdcSrc, INT32 nWidth, INT32 nHeight, INT32* px,
INT32* py)
{
HGDI_BITMAP hSrcBmp;
INT32 nXSrc, nYSrc;
if (!hdcSrc || (nWidth < 0) || (nHeight < 0) || !px || !py)
return FALSE;
hSrcBmp = (HGDI_BITMAP)hdcSrc->selectedObject;
nXSrc = *px;
nYSrc = *py;
if (!hSrcBmp)
return FALSE;
if (nYSrc < 0)
{
nYSrc = 0;
nHeight = nHeight + nYSrc;
}
if ((nXSrc) < 0)
{
nXSrc = 0;
nWidth = nWidth + nXSrc;
}
if (hSrcBmp->width < (nXSrc + nWidth))
nXSrc = hSrcBmp->width - nWidth;
if (hSrcBmp->height < (nYSrc + nHeight))
nYSrc = hSrcBmp->height - nHeight;
if ((nXSrc < 0) || (nYSrc < 0))
return FALSE;
*px = nXSrc;
*py = nYSrc;
return TRUE;
}
static BOOL adjust_src_dst_coordinates(HGDI_DC hdcDest, INT32* pnXSrc, INT32* pnYSrc, INT32* pnXDst,
INT32* pnYDst, INT32* pnWidth, INT32* pnHeight)
{
HGDI_BITMAP hDstBmp;
volatile INT32 diffX, diffY;
volatile INT32 nXSrc, nYSrc;
volatile INT32 nXDst, nYDst, nWidth, nHeight;
if (!hdcDest || !pnXSrc || !pnYSrc || !pnXDst || !pnYDst || !pnWidth || !pnHeight)
return FALSE;
hDstBmp = (HGDI_BITMAP)hdcDest->selectedObject;
nXSrc = *pnXSrc;
nYSrc = *pnYSrc;
nXDst = *pnXDst;
nYDst = *pnYDst;
nWidth = *pnWidth;
nHeight = *pnHeight;
if (!hDstBmp)
return FALSE;
if (nXDst < 0)
{
nXSrc -= nXDst;
nWidth += nXDst;
nXDst = 0;
}
if (nYDst < 0)
{
nYSrc -= nYDst;
nHeight += nYDst;
nYDst = 0;
}
diffX = hDstBmp->width - nXDst - nWidth;
if (diffX < 0)
nWidth += diffX;
diffY = hDstBmp->height - nYDst - nHeight;
if (diffY < 0)
nHeight += diffY;
if ((nXDst < 0) || (nYDst < 0) || (nWidth < 0) || (nHeight < 0))
{
nXDst = 0;
nYDst = 0;
nWidth = 0;
nHeight = 0;
}
*pnXSrc = nXSrc;
*pnYSrc = nYSrc;
*pnXDst = nXDst;
*pnYDst = nYDst;
*pnWidth = nWidth;
*pnHeight = nHeight;
return TRUE;
}
static BOOL BitBlt_process(HGDI_DC hdcDest, INT32 nXDest, INT32 nYDest, INT32 nWidth, INT32 nHeight,
HGDI_DC hdcSrc, INT32 nXSrc, INT32 nYSrc, const char* rop,
const gdiPalette* palette)
{
INT32 x, y;
UINT32 style = 0;
BOOL useSrc = FALSE;
BOOL usePat = FALSE;
const char* iter = rop;
while (*iter != '\0')
{
switch (*iter++)
{
case 'P':
usePat = TRUE;
break;
case 'S':
useSrc = TRUE;
break;
default:
break;
}
}
if (!hdcDest)
return FALSE;
if (!adjust_src_dst_coordinates(hdcDest, &nXSrc, &nYSrc, &nXDest, &nYDest, &nWidth, &nHeight))
return FALSE;
if (useSrc && !hdcSrc)
return FALSE;
if (useSrc)
{
if (!adjust_src_coordinates(hdcSrc, nWidth, nHeight, &nXSrc, &nYSrc))
return FALSE;
}
if (usePat)
{
style = gdi_GetBrushStyle(hdcDest);
switch (style)
{
case GDI_BS_SOLID:
case GDI_BS_HATCHED:
case GDI_BS_PATTERN:
break;
default:
WLog_ERR(TAG, "Invalid brush!!");
return FALSE;
}
}
if ((nXDest > nXSrc) && (nYDest > nYSrc))
{
for (y = nHeight - 1; y >= 0; y--)
{
for (x = nWidth - 1; x >= 0; x--)
{
if (!BitBlt_write(hdcDest, hdcSrc, nXDest, nYDest, nXSrc, nYSrc, x, y, useSrc,
usePat, style, rop, palette))
return FALSE;
}
}
}
else if (nXDest > nXSrc)
{
for (y = 0; y < nHeight; y++)
{
for (x = nWidth - 1; x >= 0; x--)
{
if (!BitBlt_write(hdcDest, hdcSrc, nXDest, nYDest, nXSrc, nYSrc, x, y, useSrc,
usePat, style, rop, palette))
return FALSE;
}
}
}
else if (nYDest > nYSrc)
{
for (y = nHeight - 1; y >= 0; y--)
{
for (x = 0; x < nWidth; x++)
{
if (!BitBlt_write(hdcDest, hdcSrc, nXDest, nYDest, nXSrc, nYSrc, x, y, useSrc,
usePat, style, rop, palette))
return FALSE;
}
}
}
else
{
for (y = 0; y < nHeight; y++)
{
for (x = 0; x < nWidth; x++)
{
if (!BitBlt_write(hdcDest, hdcSrc, nXDest, nYDest, nXSrc, nYSrc, x, y, useSrc,
usePat, style, rop, palette))
return FALSE;
}
}
}
return TRUE;
}
/**
* Perform a bit blit operation on the given pixel buffers.\n
* @msdn{dd183370}
* @param hdcDest destination device context
* @param nXDest destination x1
* @param nYDest destination y1
* @param nWidth width
* @param nHeight height
* @param hdcSrc source device context
* @param nXSrc source x1
* @param nYSrc source y1
* @param rop raster operation code
* @return 0 on failure, non-zero otherwise
*/
BOOL gdi_BitBlt(HGDI_DC hdcDest, INT32 nXDest, INT32 nYDest, INT32 nWidth, INT32 nHeight,
HGDI_DC hdcSrc, INT32 nXSrc, INT32 nYSrc, DWORD rop, const gdiPalette* palette)
{
HGDI_BITMAP hSrcBmp, hDstBmp;
if (!hdcDest)
return FALSE;
if (!gdi_ClipCoords(hdcDest, &nXDest, &nYDest, &nWidth, &nHeight, &nXSrc, &nYSrc))
return TRUE;
/* Check which ROP should be performed.
* Some specific ROP are used heavily and are resource intensive,
* add optimized versions for these here.
*
* For all others fall back to the generic implementation.
*/
switch (rop)
{
case GDI_SRCCOPY:
if (!hdcSrc)
return FALSE;
if (!adjust_src_dst_coordinates(hdcDest, &nXSrc, &nYSrc, &nXDest, &nYDest, &nWidth,
&nHeight))
return FALSE;
if (!adjust_src_coordinates(hdcSrc, nWidth, nHeight, &nXSrc, &nYSrc))
return FALSE;
hSrcBmp = (HGDI_BITMAP)hdcSrc->selectedObject;
hDstBmp = (HGDI_BITMAP)hdcDest->selectedObject;
if (!hSrcBmp || !hDstBmp)
return FALSE;
if (!freerdp_image_copy(hDstBmp->data, hDstBmp->format, hDstBmp->scanline, nXDest,
nYDest, nWidth, nHeight, hSrcBmp->data, hSrcBmp->format,
hSrcBmp->scanline, nXSrc, nYSrc, palette, FREERDP_FLIP_NONE))
return FALSE;
break;
case GDI_DSTCOPY:
hSrcBmp = (HGDI_BITMAP)hdcDest->selectedObject;
hDstBmp = (HGDI_BITMAP)hdcDest->selectedObject;
if (!adjust_src_dst_coordinates(hdcDest, &nXSrc, &nYSrc, &nXDest, &nYDest, &nWidth,
&nHeight))
return FALSE;
if (!adjust_src_coordinates(hdcDest, nWidth, nHeight, &nXSrc, &nYSrc))
return FALSE;
if (!hSrcBmp || !hDstBmp)
return FALSE;
if (!freerdp_image_copy(hDstBmp->data, hDstBmp->format, hDstBmp->scanline, nXDest,
nYDest, nWidth, nHeight, hSrcBmp->data, hSrcBmp->format,
hSrcBmp->scanline, nXSrc, nYSrc, palette, FREERDP_FLIP_NONE))
return FALSE;
break;
default:
if (!BitBlt_process(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc,
gdi_rop_to_string(rop), palette))
return FALSE;
break;
}
if (!gdi_InvalidateRegion(hdcDest, nXDest, nYDest, nWidth, nHeight))
return FALSE;
return TRUE;
}