FreeRDP/libfreerdp/gdi/graphics.c

/**
 * FreeRDP: A Remote Desktop Protocol Implementation
 * Graphical Objects
 *
 * Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
 *
 * 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.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <winpr/crt.h>

#include <freerdp/log.h>
#include <freerdp/gdi/dc.h>
#include <freerdp/gdi/brush.h>
#include <freerdp/gdi/shape.h>
#include <freerdp/gdi/region.h>
#include <freerdp/gdi/bitmap.h>
#include <freerdp/gdi/drawing.h>

#include "graphics.h"

#define TAG FREERDP_TAG("gdi")
/* Bitmap Class */

HGDI_BITMAP gdi_create_bitmap(rdpGdi* gdi, int nWidth, int nHeight, int bpp, BYTE* data)
{
	int nSrcStep;
	int nDstStep;
	BYTE* pSrcData;
	BYTE* pDstData;
	UINT32 SrcFormat;
	int bytesPerPixel;
	HGDI_BITMAP bitmap;

	nDstStep = nWidth * gdi->bytesPerPixel;
	pDstData = _aligned_malloc(nHeight * nDstStep, 16);

	if (!pDstData)
		return NULL;

	pSrcData = data;

	switch (bpp)
	{
		case 32:
			bytesPerPixel = 4;
			SrcFormat = PIXEL_FORMAT_XRGB32;
			break;

		case 24:
			bytesPerPixel = 3;
			SrcFormat = PIXEL_FORMAT_RGB24;
			break;

		case 16:
			bytesPerPixel = 2;
			SrcFormat = PIXEL_FORMAT_RGB565;
			break;

		case 15:
			bytesPerPixel = 2;
			SrcFormat = PIXEL_FORMAT_RGB555;
			break;

		case 8:
			bytesPerPixel = 1;
			SrcFormat = PIXEL_FORMAT_RGB8;
			break;

		default:
			SrcFormat = PIXEL_FORMAT_RGB565;
			bytesPerPixel = 2;
			break;
	}

	nSrcStep = nWidth * bytesPerPixel;

	freerdp_image_copy(pDstData, gdi->format, nDstStep, 0, 0,
			nWidth, nHeight, pSrcData, SrcFormat, nSrcStep, 0, 0, gdi->palette);

	bitmap = gdi_CreateBitmap(nWidth, nHeight, gdi->dstBpp, pDstData);

	return bitmap;
}

BOOL gdi_Bitmap_New(rdpContext* context, rdpBitmap* bitmap)
{
	gdiBitmap* gdi_bitmap;
	rdpGdi* gdi = context->gdi;

	gdi_bitmap = (gdiBitmap*) bitmap;
	gdi_bitmap->hdc = gdi_CreateCompatibleDC(gdi->hdc);
	if (!gdi_bitmap->hdc)
		return FALSE;

	if (!bitmap->data)
		gdi_bitmap->bitmap = gdi_CreateCompatibleBitmap(gdi->hdc, bitmap->width, bitmap->height);
	else
		gdi_bitmap->bitmap = gdi_create_bitmap(gdi, bitmap->width, bitmap->height, bitmap->bpp, bitmap->data);

	if (!gdi_bitmap->bitmap)
	{
		gdi_DeleteDC(gdi_bitmap->hdc);
		return FALSE;
	}

	gdi_SelectObject(gdi_bitmap->hdc, (HGDIOBJECT) gdi_bitmap->bitmap);
	gdi_bitmap->org_bitmap = NULL;
	return TRUE;
}

void gdi_Bitmap_Free(rdpContext* context, rdpBitmap* bitmap)
{
	gdiBitmap* gdi_bitmap = (gdiBitmap*) bitmap;

	if (gdi_bitmap)
	{
		gdi_SelectObject(gdi_bitmap->hdc, (HGDIOBJECT) gdi_bitmap->org_bitmap);
		gdi_DeleteObject((HGDIOBJECT) gdi_bitmap->bitmap);
		gdi_DeleteDC(gdi_bitmap->hdc);
	}
}

BOOL gdi_Bitmap_Paint(rdpContext* context, rdpBitmap* bitmap)
{
	int width, height;
	gdiBitmap* gdi_bitmap = (gdiBitmap*) bitmap;

	width = bitmap->right - bitmap->left + 1;
	height = bitmap->bottom - bitmap->top + 1;

	return gdi_BitBlt(context->gdi->primary->hdc, bitmap->left, bitmap->top,
			width, height, gdi_bitmap->hdc, 0, 0, GDI_SRCCOPY);
}

BOOL gdi_Bitmap_Decompress(rdpContext* context, rdpBitmap* bitmap,
		BYTE* data, int width, int height, int bpp, int length,
		BOOL compressed, int codecId)
{
	int status;
	UINT16 size;
	BYTE* pSrcData;
	BYTE* pDstData;
	UINT32 SrcSize;
	UINT32 SrcFormat;
	UINT32 bytesPerPixel;
	rdpGdi* gdi = context->gdi;

	bytesPerPixel = (bpp + 7) / 8;
	size = width * height * 4;

	bitmap->data = (BYTE*) _aligned_malloc(size, 16);

	pSrcData = data;
	SrcSize = (UINT32) length;
	pDstData = bitmap->data;

	if (compressed)
	{
		if (bpp < 32)
		{
			if (!freerdp_client_codecs_prepare(gdi->codecs, FREERDP_CODEC_INTERLEAVED,
											   gdi->width, gdi->height))
				return FALSE;

			status = interleaved_decompress(gdi->codecs->interleaved, pSrcData, SrcSize, bpp,
					&pDstData, gdi->format, -1, 0, 0, width, height, gdi->palette);
		}
		else
		{
			if (!freerdp_client_codecs_prepare(gdi->codecs, FREERDP_CODEC_PLANAR,
											   gdi->width, gdi->height))
				return FALSE;

			status = planar_decompress(gdi->codecs->planar, pSrcData, SrcSize, &pDstData,
					gdi->format, -1, 0, 0, width, height, TRUE);
		}

		if (status < 0)
		{
			WLog_ERR(TAG, "Bitmap Decompression Failed");
			return FALSE;
		}
	}
	else
	{
		SrcFormat = gdi_get_pixel_format(bpp, TRUE);

		status = freerdp_image_copy(pDstData, gdi->format, -1, 0, 0,
				width, height, pSrcData, SrcFormat, -1, 0, 0, gdi->palette);
	}

	bitmap->compressed = FALSE;
	bitmap->length = size;
	bitmap->bpp = gdi->dstBpp;
	return TRUE;
}

BOOL gdi_Bitmap_SetSurface(rdpContext* context, rdpBitmap* bitmap, BOOL primary)
{
	rdpGdi* gdi = context->gdi;

	if (primary)
		gdi->drawing = gdi->primary;
	else
		gdi->drawing = (gdiBitmap*) bitmap;

	return TRUE;
}

/* Glyph Class */

BOOL gdi_Glyph_New(rdpContext* context, rdpGlyph* glyph)
{
	BYTE* data;
	gdiGlyph* gdi_glyph;

	gdi_glyph = (gdiGlyph*) glyph;

	gdi_glyph->hdc = gdi_GetDC();
	if (!gdi_glyph->hdc)
		return FALSE;
	gdi_glyph->hdc->bytesPerPixel = 1;
	gdi_glyph->hdc->bitsPerPixel = 1;

	data = freerdp_glyph_convert(glyph->cx, glyph->cy, glyph->aj);
	if (!data)
	{
		gdi_DeleteDC(gdi_glyph->hdc);
		return FALSE;
	}
	gdi_glyph->bitmap = gdi_CreateBitmap(glyph->cx, glyph->cy, 1, data);
	if (!gdi_glyph->bitmap)
	{
		gdi_DeleteDC(gdi_glyph->hdc);
		_aligned_free(data);
		return FALSE;
	}
	gdi_glyph->bitmap->bytesPerPixel = 1;
	gdi_glyph->bitmap->bitsPerPixel = 1;

	gdi_SelectObject(gdi_glyph->hdc, (HGDIOBJECT) gdi_glyph->bitmap);
	gdi_glyph->org_bitmap = NULL;
	return TRUE;
}

void gdi_Glyph_Free(rdpContext* context, rdpGlyph* glyph)
{
	gdiGlyph* gdi_glyph;

	gdi_glyph = (gdiGlyph*) glyph;

	if (gdi_glyph)
	{
		gdi_SelectObject(gdi_glyph->hdc, (HGDIOBJECT) gdi_glyph->org_bitmap);
		gdi_DeleteObject((HGDIOBJECT) gdi_glyph->bitmap);
		gdi_DeleteDC(gdi_glyph->hdc);
	}
}

BOOL gdi_Glyph_Draw(rdpContext* context, rdpGlyph* glyph, int x, int y)
{
	gdiGlyph* gdi_glyph;
	rdpGdi* gdi = context->gdi;

	gdi_glyph = (gdiGlyph*) glyph;

	return gdi_BitBlt(gdi->drawing->hdc, x, y, gdi_glyph->bitmap->width,
			gdi_glyph->bitmap->height, gdi_glyph->hdc, 0, 0, GDI_DSPDxax);
}

BOOL gdi_Glyph_BeginDraw(rdpContext* context, int x, int y, int width, int height, UINT32 bgcolor, UINT32 fgcolor, BOOL fOpRedundant)
{
	GDI_RECT rect;
	HGDI_BRUSH brush;
	rdpGdi* gdi = context->gdi;
	BOOL ret = FALSE;

	/* TODO: handle fOpRedundant! See xf_Glyph_BeginDraw() */

	bgcolor = freerdp_convert_gdi_order_color(bgcolor, gdi->srcBpp, gdi->format, gdi->palette);
	fgcolor = freerdp_convert_gdi_order_color(fgcolor, gdi->srcBpp, gdi->format, gdi->palette);

	if (!(brush = gdi_CreateSolidBrush(fgcolor)))
		goto out;

	gdi_CRgnToRect(x, y, width, height, &rect);
	ret = gdi_FillRect(gdi->drawing->hdc, &rect, brush);
	gdi_DeleteObject((HGDIOBJECT) brush);

out:
	gdi->textColor = gdi_SetTextColor(gdi->drawing->hdc, bgcolor);
	return ret;
}

BOOL gdi_Glyph_EndDraw(rdpContext* context, int x, int y, int width, int height, UINT32 bgcolor, UINT32 fgcolor)
{
	rdpGdi* gdi = context->gdi;

	bgcolor = freerdp_convert_gdi_order_color(bgcolor, gdi->srcBpp, gdi->format, gdi->palette);
	gdi->textColor = gdi_SetTextColor(gdi->drawing->hdc, bgcolor);
	return TRUE;
}

/* Graphics Module */

BOOL gdi_register_graphics(rdpGraphics* graphics)
{
	rdpBitmap* bitmap;
	rdpGlyph* glyph;

	bitmap = (rdpBitmap*) calloc(1, sizeof(rdpBitmap));

	if (!bitmap)
		return FALSE;

	bitmap->size = sizeof(gdiBitmap);

	bitmap->New = gdi_Bitmap_New;
	bitmap->Free = gdi_Bitmap_Free;
	bitmap->Paint = gdi_Bitmap_Paint;
	bitmap->Decompress = gdi_Bitmap_Decompress;
	bitmap->SetSurface = gdi_Bitmap_SetSurface;

	graphics_register_bitmap(graphics, bitmap);
	free(bitmap);

	glyph = (rdpGlyph*) calloc(1, sizeof(rdpGlyph));

	if (!glyph)
		return FALSE;

	glyph->size = sizeof(gdiGlyph);

	glyph->New = gdi_Glyph_New;
	glyph->Free = gdi_Glyph_Free;
	glyph->Draw = gdi_Glyph_Draw;
	glyph->BeginDraw = gdi_Glyph_BeginDraw;
	glyph->EndDraw = gdi_Glyph_EndDraw;

	graphics_register_glyph(graphics, glyph);
	free(glyph);
	return TRUE;
}