836 lines
22 KiB
C
836 lines
22 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Color Conversion Routines
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*
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* Copyright 2010 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2016 Armin Novak <armin.novak@thincast.com>
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* Copyright 2016 Thincast Technologies GmbH
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <winpr/crt.h>
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#include <freerdp/log.h>
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#include <freerdp/freerdp.h>
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#include <freerdp/primitives.h>
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#if defined(CAIRO_FOUND)
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#include <cairo.h>
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#endif
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#if defined(SWSCALE_FOUND)
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#include <libswscale/swscale.h>
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#endif
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#define TAG FREERDP_TAG("color")
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BYTE* freerdp_glyph_convert(UINT32 width, UINT32 height, const BYTE* data)
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{
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UINT32 x, y;
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const BYTE* srcp;
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BYTE* dstp;
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BYTE* dstData;
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UINT32 scanline;
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/*
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* converts a 1-bit-per-pixel glyph to a one-byte-per-pixel glyph:
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* this approach uses a little more memory, but provides faster
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* means of accessing individual pixels in blitting operations
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*/
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scanline = (width + 7) / 8;
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dstData = (BYTE*) _aligned_malloc(width * height, 16);
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if (!dstData)
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return NULL;
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ZeroMemory(dstData, width * height);
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dstp = dstData;
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for (y = 0; y < height; y++)
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{
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srcp = data + (y * scanline);
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for (x = 0; x < width; x++)
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{
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if ((*srcp & (0x80 >> (x % 8))) != 0)
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*dstp = 0xFF;
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dstp++;
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if (((x + 1) % 8 == 0) && x != 0)
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srcp++;
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}
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}
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return dstData;
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}
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BOOL freerdp_image_copy_from_monochrome(BYTE* pDstData, UINT32 DstFormat,
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UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
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UINT32 nWidth, UINT32 nHeight,
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const BYTE* pSrcData,
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UINT32 backColor, UINT32 foreColor,
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const gdiPalette* palette)
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{
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UINT32 x, y;
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BOOL vFlip;
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UINT32 monoStep;
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const UINT32 dstBytesPerPixel = GetBytesPerPixel(DstFormat);
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if (!pDstData || !pSrcData || !palette)
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return FALSE;
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if (nDstStep == 0)
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nDstStep = dstBytesPerPixel * nWidth;
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vFlip = FALSE;
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monoStep = (nWidth + 7) / 8;
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for (y = 0; y < nHeight; y++)
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{
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const BYTE* monoBits;
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BYTE* pDstLine = &pDstData[((nYDst + y) * nDstStep)];
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UINT32 monoBit = 0x80;
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if (!vFlip)
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monoBits = &pSrcData[monoStep * y];
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else
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monoBits = &pSrcData[monoStep * (nHeight - y - 1)];
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for (x = 0; x < nWidth; x++)
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{
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BYTE* pDstPixel = &pDstLine[((nXDst + x) * GetBytesPerPixel(DstFormat))];
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BOOL monoPixel = (*monoBits & monoBit) ? TRUE : FALSE;
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if (!(monoBit >>= 1))
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{
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monoBits++;
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monoBit = 0x80;
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}
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if (monoPixel)
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WriteColor(pDstPixel, DstFormat, backColor);
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else
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WriteColor(pDstPixel, DstFormat, foreColor);
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}
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}
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return TRUE;
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}
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static INLINE UINT32 freerdp_image_inverted_pointer_color(UINT32 x, UINT32 y,
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UINT32 format)
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{
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#if 1
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/**
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* Inverted pointer colors (where individual pixels can change their
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* color to accommodate the background behind them) only seem to be
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* supported on Windows.
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* Using a static replacement color for these pixels (e.g. black)
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* might result in invisible pointers depending on the background.
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* This function returns either black or white, depending on the
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* pixel's position.
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*/
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BYTE fill = (x + y) & 1 ? 0x00 : 0xFF;
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#else
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BYTE fill = 0x00;
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#endif
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return FreeRDPGetColor(format, fill, fill, fill, 0xFF);
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}
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/*
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* DIB color palettes are arrays of RGBQUAD structs with colors in BGRX format.
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* They are used only by 1, 2, 4, and 8-bit bitmaps.
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*/
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static void fill_gdi_palette_for_icon(const BYTE* colorTable, UINT16 cbColorTable, gdiPalette* palette)
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{
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UINT16 i;
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palette->format = PIXEL_FORMAT_BGRX32;
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ZeroMemory(palette->palette, sizeof(palette->palette));
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if (!cbColorTable)
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return;
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if ((cbColorTable % 4 != 0) || (cbColorTable / 4 > 256))
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{
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WLog_WARN(TAG, "weird palette size: %u", cbColorTable);
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return;
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}
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for (i = 0; i < cbColorTable / 4; i++)
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{
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palette->palette[i] = ReadColor(&colorTable[4 * i], palette->format);
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}
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}
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static INLINE UINT32 div_ceil(UINT32 a, UINT32 b)
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{
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return (a + (b - 1)) / b;
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}
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static INLINE UINT32 round_up(UINT32 a, UINT32 b)
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{
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return b * div_ceil(a, b);
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}
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BOOL freerdp_image_copy_from_icon_data(
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BYTE* pDstData, UINT32 DstFormat, UINT32 nDstStep,
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UINT32 nXDst, UINT32 nYDst, UINT16 nWidth, UINT16 nHeight,
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const BYTE* bitsColor, UINT16 cbBitsColor,
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const BYTE* bitsMask, UINT16 cbBitsMask,
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const BYTE* colorTable, UINT16 cbColorTable,
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UINT32 bpp)
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{
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DWORD format;
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gdiPalette palette;
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if (!pDstData || !bitsColor)
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return FALSE;
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/*
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* Color formats used by icons are DIB bitmap formats (2-bit format
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* is not used by MS-RDPERP). Note that 16-bit is RGB555, not RGB565,
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* and that 32-bit format uses BGRA order.
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*/
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switch (bpp)
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{
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case 1:
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case 4:
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/*
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* These formats are not supported by freerdp_image_copy().
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* PIXEL_FORMAT_MONO and PIXEL_FORMAT_A4 are *not* correct
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* color formats for this. Please fix freerdp_image_copy()
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* if you came here to fix a broken icon of some weird app
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* that still uses 1 or 4bpp format in the 21st century.
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*/
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WLog_WARN(TAG, "1bpp and 4bpp icons are not supported");
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return FALSE;
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case 8:
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format = PIXEL_FORMAT_RGB8;
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break;
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case 16:
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format = PIXEL_FORMAT_RGB15;
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break;
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case 24:
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format = PIXEL_FORMAT_RGB24;
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break;
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case 32:
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format = PIXEL_FORMAT_BGRA32;
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break;
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default:
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WLog_WARN(TAG, "invalid icon bpp: %d", bpp);
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return FALSE;
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}
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fill_gdi_palette_for_icon(colorTable, cbColorTable, &palette);
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if (!freerdp_image_copy(pDstData, DstFormat, nDstStep, nXDst, nYDst,
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nWidth, nHeight, bitsColor, format, 0, 0, 0, &palette,
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FREERDP_FLIP_VERTICAL))
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return FALSE;
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/* apply alpha mask */
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if (ColorHasAlpha(DstFormat) && cbBitsMask)
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{
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BYTE nextBit;
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const BYTE* maskByte;
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UINT32 x, y;
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UINT32 stride;
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BYTE r, g, b;
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BYTE* dstBuf = pDstData;
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UINT32 dstBpp = GetBytesPerPixel(DstFormat);
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/*
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* Each byte encodes 8 adjacent pixels (with LSB padding as needed).
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* And due to hysterical raisins, stride of DIB bitmaps must be
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* a multiple of 4 bytes.
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*/
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stride = round_up(div_ceil(nWidth, 8), 4);
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for (y = 0; y < nHeight; y++)
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{
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maskByte = &bitsMask[stride * (nHeight - 1 - y)];
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nextBit = 0x80;
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for (x = 0; x < nWidth; x++)
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{
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UINT32 color;
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BYTE alpha = (*maskByte & nextBit) ? 0x00 : 0xFF;
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/* read color back, add alpha and write it back */
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color = ReadColor(dstBuf, DstFormat);
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SplitColor(color, DstFormat, &r, &g, &b, NULL, &palette);
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color = FreeRDPGetColor(DstFormat, r, g, b, alpha);
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WriteColor(dstBuf, DstFormat, color);
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nextBit >>= 1;
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dstBuf += dstBpp;
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if (!nextBit)
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{
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nextBit = 0x80;
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maskByte++;
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}
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}
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}
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}
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return TRUE;
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}
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/**
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* Drawing Monochrome Pointers:
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* http://msdn.microsoft.com/en-us/library/windows/hardware/ff556143/
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*
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* Drawing Color Pointers:
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* http://msdn.microsoft.com/en-us/library/windows/hardware/ff556138/
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*/
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BOOL freerdp_image_copy_from_pointer_data(
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BYTE* pDstData, UINT32 DstFormat, UINT32 nDstStep,
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UINT32 nXDst, UINT32 nYDst, UINT32 nWidth, UINT32 nHeight,
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const BYTE* xorMask, UINT32 xorMaskLength,
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const BYTE* andMask, UINT32 andMaskLength,
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UINT32 xorBpp, const gdiPalette* palette)
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{
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UINT32 x, y;
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BOOL vFlip;
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UINT32 xorStep;
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UINT32 andStep;
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UINT32 xorBit;
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UINT32 andBit;
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UINT32 xorPixel;
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UINT32 andPixel;
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UINT32 dstBitsPerPixel;
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UINT32 dstBytesPerPixel;
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dstBitsPerPixel = GetBitsPerPixel(DstFormat);
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dstBytesPerPixel = GetBytesPerPixel(DstFormat);
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if (nDstStep <= 0)
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nDstStep = dstBytesPerPixel * nWidth;
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for (y = nYDst; y < nHeight; y++)
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{
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BYTE* pDstLine = &pDstData[y * nDstStep + nXDst * dstBytesPerPixel];
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memset(pDstLine, 0, dstBytesPerPixel * (nWidth - nXDst));
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}
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vFlip = (xorBpp == 1) ? FALSE : TRUE;
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andStep = (nWidth + 7) / 8;
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andStep += (andStep % 2);
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if (!xorMask || (xorMaskLength == 0))
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return FALSE;
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switch (xorBpp)
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{
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case 1:
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if (!andMask || (andMaskLength == 0))
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return FALSE;
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xorStep = (nWidth + 7) / 8;
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xorStep += (xorStep % 2);
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if (xorStep * nHeight > xorMaskLength)
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return FALSE;
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if (andStep * nHeight > andMaskLength)
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return FALSE;
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for (y = 0; y < nHeight; y++)
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{
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const BYTE* andBits;
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const BYTE* xorBits;
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BYTE* pDstPixel = &pDstData[((nYDst + y) * nDstStep) +
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(nXDst * GetBytesPerPixel(DstFormat))];
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xorBit = andBit = 0x80;
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if (!vFlip)
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{
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xorBits = &xorMask[xorStep * y];
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andBits = &andMask[andStep * y];
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}
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else
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{
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xorBits = &xorMask[xorStep * (nHeight - y - 1)];
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andBits = &andMask[andStep * (nHeight - y - 1)];
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}
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for (x = 0; x < nWidth; x++)
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{
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UINT32 color = 0;
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xorPixel = (*xorBits & xorBit) ? 1 : 0;
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if (!(xorBit >>= 1))
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{
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xorBits++;
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xorBit = 0x80;
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}
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andPixel = (*andBits & andBit) ? 1 : 0;
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if (!(andBit >>= 1))
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{
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andBits++;
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andBit = 0x80;
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}
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if (!andPixel && !xorPixel)
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color = FreeRDPGetColor(DstFormat, 0, 0, 0, 0xFF); /* black */
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else if (!andPixel && xorPixel)
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color = FreeRDPGetColor(DstFormat, 0xFF, 0xFF, 0xFF, 0xFF); /* white */
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else if (andPixel && !xorPixel)
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color = FreeRDPGetColor(DstFormat, 0, 0, 0, 0); /* transparent */
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else if (andPixel && xorPixel)
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color = freerdp_image_inverted_pointer_color(x, y, DstFormat); /* inverted */
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WriteColor(pDstPixel, DstFormat, color);
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pDstPixel += GetBytesPerPixel(DstFormat);
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}
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}
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return TRUE;
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case 8:
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case 16:
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case 24:
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case 32:
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{
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UINT32 xorBytesPerPixel = xorBpp >> 3;
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xorStep = nWidth * xorBytesPerPixel;
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if (xorBpp == 8 && !palette)
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{
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WLog_ERR(TAG, "null palette in conversion from %"PRIu32" bpp to %"PRIu32" bpp",
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xorBpp, dstBitsPerPixel);
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return FALSE;
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}
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if (xorStep * nHeight > xorMaskLength)
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return FALSE;
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if (andMask)
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{
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if (andStep * nHeight > andMaskLength)
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return FALSE;
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}
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for (y = 0; y < nHeight; y++)
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{
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const BYTE* xorBits;
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const BYTE* andBits = NULL;
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BYTE* pDstPixel = &pDstData[((nYDst + y) * nDstStep) +
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(nXDst * GetBytesPerPixel(DstFormat))];
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andBit = 0x80;
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if (!vFlip)
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{
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if (andMask)
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andBits = &andMask[andStep * y];
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xorBits = &xorMask[xorStep * y];
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}
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else
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{
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if (andMask)
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andBits = &andMask[andStep * (nHeight - y - 1)];
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xorBits = &xorMask[xorStep * (nHeight - y - 1)];
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}
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for (x = 0; x < nWidth; x++)
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{
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UINT32 pixelFormat;
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UINT32 color;
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if (xorBpp == 32)
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{
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pixelFormat = PIXEL_FORMAT_BGRA32;
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xorPixel = ReadColor(xorBits, pixelFormat);
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}
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else if (xorBpp == 16)
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{
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pixelFormat = PIXEL_FORMAT_RGB15;
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xorPixel = ReadColor(xorBits, pixelFormat);
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}
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else if (xorBpp == 8)
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{
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pixelFormat = palette->format;
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xorPixel = palette->palette[xorBits[0]];
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}
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else
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{
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pixelFormat = PIXEL_FORMAT_BGR24;
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xorPixel = ReadColor(xorBits, pixelFormat);
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}
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xorPixel = FreeRDPConvertColor(xorPixel,
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pixelFormat,
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PIXEL_FORMAT_ARGB32,
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palette);
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xorBits += xorBytesPerPixel;
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andPixel = 0;
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if (andMask)
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{
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andPixel = (*andBits & andBit) ? 1 : 0;
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if (!(andBit >>= 1))
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{
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andBits++;
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andBit = 0x80;
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}
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}
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|
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if (andPixel)
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{
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if (xorPixel == 0xFF000000) /* black -> transparent */
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xorPixel = 0x00000000;
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else if (xorPixel == 0xFFFFFFFF) /* white -> inverted */
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xorPixel = freerdp_image_inverted_pointer_color(x, y, PIXEL_FORMAT_ARGB32);
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}
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color = FreeRDPConvertColor(xorPixel, PIXEL_FORMAT_ARGB32,
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DstFormat, palette);
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WriteColor(pDstPixel, DstFormat, color);
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pDstPixel += GetBytesPerPixel(DstFormat);
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}
|
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}
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return TRUE;
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}
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|
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default:
|
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WLog_ERR(TAG, "failed to convert from %"PRIu32" bpp to %"PRIu32" bpp",
|
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xorBpp, dstBitsPerPixel);
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return FALSE;
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}
|
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}
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|
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static INLINE BOOL overlapping(const BYTE* pDstData, UINT32 nXDst, UINT32 nYDst,
|
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UINT32 nDstStep, UINT32 dstBytesPerPixel,
|
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const BYTE* pSrcData, UINT32 nXSrc, UINT32 nYSrc,
|
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UINT32 nSrcStep, UINT32 srcBytesPerPixel,
|
|
UINT32 nWidth, UINT32 nHeight)
|
|
{
|
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const BYTE* pDstStart = &pDstData[nXDst * dstBytesPerPixel + nYDst * nDstStep];
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const BYTE* pDstEnd = pDstStart + nHeight * nDstStep;
|
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const BYTE* pSrcStart = &pSrcData[nXSrc * srcBytesPerPixel + nYSrc * nSrcStep];
|
|
const BYTE* pSrcEnd = pSrcStart + nHeight * nSrcStep;
|
|
|
|
if ((pDstStart >= pSrcStart) && (pDstStart <= pSrcEnd))
|
|
return TRUE;
|
|
|
|
if ((pDstEnd >= pSrcStart) && (pDstEnd <= pSrcEnd))
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
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)
|
|
{
|
|
const UINT32 dstByte = GetBytesPerPixel(DstFormat);
|
|
const UINT32 srcByte = GetBytesPerPixel(SrcFormat);
|
|
const UINT32 copyDstWidth = nWidth * dstByte;
|
|
const UINT32 xSrcOffset = nXSrc * srcByte;
|
|
const UINT32 xDstOffset = nXDst * dstByte;
|
|
const BOOL vSrcVFlip = flags & FREERDP_FLIP_VERTICAL;
|
|
UINT32 srcVOffset = 0;
|
|
INT32 srcVMultiplier = 1;
|
|
UINT32 dstVOffset = 0;
|
|
INT32 dstVMultiplier = 1;
|
|
|
|
if ((nHeight > INT32_MAX) || (nWidth > INT32_MAX))
|
|
return FALSE;
|
|
|
|
if (!pDstData || !pSrcData)
|
|
return FALSE;
|
|
|
|
if (nDstStep == 0)
|
|
nDstStep = nWidth * GetBytesPerPixel(DstFormat);
|
|
|
|
if (nSrcStep == 0)
|
|
nSrcStep = nWidth * GetBytesPerPixel(SrcFormat);
|
|
|
|
if (vSrcVFlip)
|
|
{
|
|
srcVOffset = (nHeight - 1) * nSrcStep;
|
|
srcVMultiplier = -1;
|
|
}
|
|
|
|
if (AreColorFormatsEqualNoAlpha(SrcFormat, DstFormat))
|
|
{
|
|
INT32 y;
|
|
|
|
if (overlapping(pDstData, nXDst, nYDst, nDstStep, dstByte,
|
|
pSrcData, nXSrc, nYSrc, nSrcStep, srcByte,
|
|
nWidth, nHeight))
|
|
{
|
|
/* Copy down */
|
|
if (nYDst < nYSrc)
|
|
{
|
|
for (y = 0; y < (INT32)nHeight; y++)
|
|
{
|
|
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
|
|
nSrcStep * srcVMultiplier +
|
|
srcVOffset];
|
|
BYTE* dstLine = &pDstData[(y + nYDst) *
|
|
nDstStep * dstVMultiplier +
|
|
dstVOffset];
|
|
memcpy(&dstLine[xDstOffset],
|
|
&srcLine[xSrcOffset], copyDstWidth);
|
|
}
|
|
}
|
|
/* Copy up */
|
|
else if (nYDst > nYSrc)
|
|
{
|
|
for (y = nHeight - 1; y >= 0; y--)
|
|
{
|
|
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
|
|
nSrcStep * srcVMultiplier +
|
|
srcVOffset];
|
|
BYTE* dstLine = &pDstData[(y + nYDst) *
|
|
nDstStep * dstVMultiplier +
|
|
dstVOffset];
|
|
memcpy(&dstLine[xDstOffset],
|
|
&srcLine[xSrcOffset], copyDstWidth);
|
|
}
|
|
}
|
|
/* Copy left */
|
|
else if (nXSrc > nXDst)
|
|
{
|
|
for (y = 0; y < (INT32)nHeight; y++)
|
|
{
|
|
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
|
|
nSrcStep * srcVMultiplier +
|
|
srcVOffset];
|
|
BYTE* dstLine = &pDstData[(y + nYDst) *
|
|
nDstStep * dstVMultiplier +
|
|
dstVOffset];
|
|
memmove(&dstLine[xDstOffset],
|
|
&srcLine[xSrcOffset], copyDstWidth);
|
|
}
|
|
}
|
|
/* Copy right */
|
|
else if (nXSrc < nXDst)
|
|
{
|
|
for (y = (INT32)nHeight - 1; y >= 0; y--)
|
|
{
|
|
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
|
|
nSrcStep * srcVMultiplier +
|
|
srcVOffset];
|
|
BYTE* dstLine = &pDstData[(y + nYDst) *
|
|
nDstStep * dstVMultiplier +
|
|
dstVOffset];
|
|
memmove(&dstLine[xDstOffset],
|
|
&srcLine[xSrcOffset], copyDstWidth);
|
|
}
|
|
}
|
|
/* Source and destination are equal... */
|
|
else
|
|
{
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (y = 0; y < (INT32)nHeight; y++)
|
|
{
|
|
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
|
|
nSrcStep * srcVMultiplier +
|
|
srcVOffset];
|
|
BYTE* dstLine = &pDstData[(y + nYDst) *
|
|
nDstStep * dstVMultiplier +
|
|
dstVOffset];
|
|
memcpy(&dstLine[xDstOffset],
|
|
&srcLine[xSrcOffset], copyDstWidth);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
UINT32 x, y;
|
|
|
|
for (y = 0; y < nHeight; y++)
|
|
{
|
|
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
|
|
nSrcStep * srcVMultiplier +
|
|
srcVOffset];
|
|
BYTE* dstLine = &pDstData[(y + nYDst) *
|
|
nDstStep * dstVMultiplier + dstVOffset];
|
|
|
|
for (x = 0; x < nWidth; x++)
|
|
{
|
|
UINT32 dstColor;
|
|
UINT32 color = ReadColor(&srcLine[(x + nXSrc) * srcByte],
|
|
SrcFormat);
|
|
dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
|
|
WriteColor(&dstLine[(x + nXDst) * dstByte], DstFormat, dstColor);
|
|
}
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL freerdp_image_fill(BYTE* pDstData, DWORD DstFormat,
|
|
UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
|
|
UINT32 nWidth, UINT32 nHeight, UINT32 color)
|
|
{
|
|
UINT32 x, y;
|
|
const UINT32 bpp = GetBytesPerPixel(DstFormat);
|
|
BYTE* pFirstDstLine = &pDstData[nYDst * nDstStep];
|
|
BYTE* pFirstDstLineXOffset = &pFirstDstLine[nXDst * bpp];
|
|
|
|
for (x = 0; x < nWidth; x++)
|
|
{
|
|
BYTE* pDst = &pFirstDstLine[(x + nXDst) * bpp];
|
|
WriteColor(pDst, DstFormat, color);
|
|
}
|
|
|
|
for (y = 1; y < nHeight; y++)
|
|
{
|
|
BYTE* pDstLine = &pDstData[(y + nYDst) * nDstStep + nXDst * bpp];
|
|
memcpy(pDstLine, pFirstDstLineXOffset, nWidth * bpp);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#if defined(SWSCALE_FOUND)
|
|
static int av_format_for_buffer(UINT32 format)
|
|
{
|
|
switch (format)
|
|
{
|
|
case PIXEL_FORMAT_ARGB32:
|
|
return AV_PIX_FMT_BGRA;
|
|
|
|
case PIXEL_FORMAT_XRGB32:
|
|
return AV_PIX_FMT_BGR0;
|
|
|
|
case PIXEL_FORMAT_BGRA32:
|
|
return AV_PIX_FMT_RGBA;
|
|
|
|
case PIXEL_FORMAT_BGRX32:
|
|
return AV_PIX_FMT_RGB0;
|
|
|
|
default:
|
|
return AV_PIX_FMT_NONE;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
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)
|
|
{
|
|
BOOL rc = FALSE;
|
|
const BYTE* src = &pSrcData[nXSrc * GetBytesPerPixel(SrcFormat) + nYSrc * nSrcStep];
|
|
BYTE* dst = &pDstData[nXDst * GetBytesPerPixel(DstFormat) + nYDst * nDstStep];
|
|
|
|
/* direct copy is much faster than scaling, so check if we can simply copy... */
|
|
if ((nDstWidth == nSrcWidth) && (nDstHeight == nSrcHeight))
|
|
{
|
|
return freerdp_image_copy(pDstData, DstFormat, nDstStep, nXDst, nYDst, nDstWidth, nDstHeight,
|
|
pSrcData, SrcFormat, nSrcStep, nXSrc, nYSrc,
|
|
NULL, FREERDP_FLIP_NONE);
|
|
}
|
|
else
|
|
#if defined(SWSCALE_FOUND)
|
|
{
|
|
int res;
|
|
struct SwsContext* resize;
|
|
int srcFormat = av_format_for_buffer(SrcFormat);
|
|
int dstFormat = av_format_for_buffer(DstFormat);
|
|
const int srcStep[1] = { (int)nSrcStep };
|
|
const int dstStep[1] = { (int)nDstStep };
|
|
|
|
if ((srcFormat == AV_PIX_FMT_NONE) || (dstFormat == AV_PIX_FMT_NONE))
|
|
return FALSE;
|
|
|
|
resize = sws_getContext((int)nSrcWidth, (int)nSrcHeight, srcFormat,
|
|
(int)nDstWidth, (int)nDstHeight, dstFormat,
|
|
SWS_BILINEAR, NULL, NULL, NULL);
|
|
|
|
if (!resize)
|
|
goto fail;
|
|
|
|
res = sws_scale(resize, &src, srcStep, 0, (int)nSrcHeight, &dst, dstStep);
|
|
rc = (res == ((int)nDstHeight));
|
|
fail:
|
|
sws_freeContext(resize);
|
|
}
|
|
|
|
#elif defined(CAIRO_FOUND)
|
|
{
|
|
const double sx = (double)nDstWidth / (double)nSrcWidth;
|
|
const double sy = (double)nDstHeight / (double)nSrcHeight;
|
|
cairo_t* cairo_context;
|
|
cairo_surface_t* csrc, *cdst;
|
|
|
|
if ((nSrcWidth > INT_MAX) || (nSrcHeight > INT_MAX) || (nSrcStep > INT_MAX))
|
|
return FALSE;
|
|
|
|
if ((nDstWidth > INT_MAX) || (nDstHeight > INT_MAX) || (nDstStep > INT_MAX))
|
|
return FALSE;
|
|
|
|
csrc = cairo_image_surface_create_for_data((void*)src,
|
|
CAIRO_FORMAT_ARGB32, (int)nSrcWidth, (int)nSrcHeight, (int)nSrcStep);
|
|
cdst = cairo_image_surface_create_for_data(dst,
|
|
CAIRO_FORMAT_ARGB32, (int)nDstWidth, (int)nDstHeight, (int)nDstStep);
|
|
|
|
if (!csrc || !cdst)
|
|
goto fail;
|
|
|
|
cairo_context = cairo_create(cdst);
|
|
|
|
if (!cairo_context)
|
|
goto fail2;
|
|
|
|
cairo_scale(cairo_context, sx, sy);
|
|
cairo_set_operator(cairo_context, CAIRO_OPERATOR_SOURCE);
|
|
cairo_set_source_surface(cairo_context, csrc, 0, 0);
|
|
cairo_paint(cairo_context);
|
|
rc = TRUE;
|
|
fail2:
|
|
cairo_destroy(cairo_context);
|
|
fail:
|
|
cairo_surface_destroy(csrc);
|
|
cairo_surface_destroy(cdst);
|
|
}
|
|
#else
|
|
{
|
|
WLog_WARN(TAG, "SmartScaling requested but compiled without libcairo support!");
|
|
}
|
|
#endif
|
|
return rc;
|
|
}
|