/src/FreeRDP/libfreerdp/gdi/graphics.c

Source
/**
 * FreeRDP: A Remote Desktop Protocol Implementation
 * Graphical Objects
 *
 * Copyright 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 <winpr/crt.h>

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

#include "clipping.h"
#include "drawing.h"
#include "brush.h"
#include "graphics.h"

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

HGDI_BITMAP gdi_create_bitmap(rdpGdi* gdi, UINT32 nWidth, UINT32 nHeight, UINT32 SrcFormat,
                              BYTE* data)
{
  UINT32 nSrcStep = 0;
  UINT32 nDstStep = 0;
  BYTE* pSrcData = nullptr;
  BYTE* pDstData = nullptr;
  HGDI_BITMAP bitmap = nullptr;

  if (!gdi)
    return nullptr;

  nDstStep = nWidth * FreeRDPGetBytesPerPixel(gdi->dstFormat);
  pDstData = winpr_aligned_malloc(1ull * nHeight * nDstStep, 16);

  if (!pDstData)
    return nullptr;

  pSrcData = data;
  nSrcStep = nWidth * FreeRDPGetBytesPerPixel(SrcFormat);

  if (!freerdp_image_copy_no_overlap(pDstData, gdi->dstFormat, nDstStep, 0, 0, nWidth, nHeight,
                                     pSrcData, SrcFormat, nSrcStep, 0, 0, &gdi->palette,
                                     FREERDP_FLIP_NONE))
  {
    winpr_aligned_free(pDstData);
    return nullptr;
  }

  bitmap = gdi_CreateBitmap(nWidth, nHeight, gdi->dstFormat, pDstData);
  if (!bitmap)
    winpr_aligned_free(pDstData);
  return bitmap;
}

static BOOL gdi_Bitmap_New(rdpContext* context, rdpBitmap* bitmap)
{
  gdiBitmap* gdi_bitmap = nullptr;
  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
  {
    UINT32 format = bitmap->format;
    gdi_bitmap->bitmap =
        gdi_create_bitmap(gdi, bitmap->width, bitmap->height, format, bitmap->data);
  }

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

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

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

  if (gdi_bitmap)
  {
    if (gdi_bitmap->hdc)
      gdi_SelectObject(gdi_bitmap->hdc, (HGDIOBJECT)gdi_bitmap->org_bitmap);

    gdi_DeleteObject((HGDIOBJECT)gdi_bitmap->bitmap);
    gdi_DeleteDC(gdi_bitmap->hdc);
    winpr_aligned_free(bitmap->data);
  }

  free(bitmap);
}

static BOOL gdi_Bitmap_Paint(rdpContext* context, rdpBitmap* bitmap)
{
  gdiBitmap* gdi_bitmap = (gdiBitmap*)bitmap;
  UINT32 width = bitmap->right - bitmap->left + 1;
  UINT32 height = bitmap->bottom - bitmap->top + 1;
  return gdi_BitBlt(context->gdi->primary->hdc, WINPR_ASSERTING_INT_CAST(int, bitmap->left),
                    WINPR_ASSERTING_INT_CAST(int, bitmap->top),
                    WINPR_ASSERTING_INT_CAST(int, width), WINPR_ASSERTING_INT_CAST(int, height),
                    gdi_bitmap->hdc, 0, 0, GDI_SRCCOPY, &context->gdi->palette);
}

WINPR_ATTR_NODISCARD
static BOOL gdi_Bitmap_Rfx(rdpContext* context, rdpBitmap* bitmap, const BYTE* pSrcData,
                           UINT32 SrcSize)
{
  WINPR_ASSERT(context);
  WINPR_ASSERT(bitmap);
  WINPR_ASSERT(pSrcData || (SrcSize == 0));

  REGION16 invalidRegion = WINPR_C_ARRAY_INIT;
  region16_init(&invalidRegion);

  const UINT32 stride = bitmap->width * FreeRDPGetBytesPerPixel(bitmap->format);

  const BOOL rc =
      rfx_process_message(context->codecs->rfx, pSrcData, SrcSize, bitmap->left, bitmap->top,
                          bitmap->data, bitmap->format, stride, bitmap->height, &invalidRegion);
  region16_uninit(&invalidRegion);

  if (!rc)
  {
    WLog_ERR(TAG, "rfx_process_message failed");
    return FALSE;
  }
  return TRUE;
}

static BOOL gdi_Bitmap_Decompress(rdpContext* context, rdpBitmap* bitmap, const BYTE* pSrcData,
                                  UINT32 DstWidth, UINT32 DstHeight, UINT32 bpp, UINT32 length,
                                  BOOL compressed, UINT32 codecId)
{
  WINPR_ASSERT(context);
  WINPR_ASSERT(bitmap);

  UINT32 SrcSize = length;
  rdpGdi* gdi = context->gdi;
  WINPR_ASSERT(gdi);

  bitmap->compressed = FALSE;
  bitmap->format = gdi->dstFormat;

  if ((FreeRDPGetBytesPerPixel(bitmap->format) == 0) || (DstWidth == 0) || (DstHeight == 0) ||
      (DstWidth > UINT32_MAX / DstHeight) ||
      ((DstWidth * DstHeight) > (UINT32_MAX / FreeRDPGetBytesPerPixel(bitmap->format))))
  {
    WLog_ERR(TAG, "invalid input data");
    return FALSE;
  }

  const DWORD xbpp = FreeRDPGetBytesPerPixel(bitmap->format);

  WINPR_ASSERT(!bitmap->data);
  const UINT32 stride = DstWidth * xbpp;
  bitmap->length = stride * DstHeight;
  bitmap->data = (BYTE*)winpr_aligned_malloc(bitmap->length, 16);

  if (!bitmap->data)
    return FALSE;

  if (compressed)
  {
    WINPR_ASSERT(context->codecs);
    switch (codecId)
    {
      case RDP_CODEC_ID_REMOTEFX:
      case RDP_CODEC_ID_IMAGE_REMOTEFX:
        if (!gdi_Bitmap_Rfx(context, bitmap, pSrcData, SrcSize))
          return FALSE;
        break;
      case RDP_CODEC_ID_NSCODEC:
      {
        const int status = nsc_process_message(
            context->codecs->nsc, 32, DstWidth, DstHeight, pSrcData, SrcSize, bitmap->data,
            bitmap->format, stride, 0, 0, DstWidth, DstHeight, FREERDP_FLIP_VERTICAL);

        if (status < 1)
        {
          WLog_ERR(TAG, "nsc_process_message failed");
          return FALSE;
        }
      }
      break;
      default:
        if (bpp < 32)
        {
          /* Bitmap has an alpha channel, source does not necessarily have one.
           * Prefill the alpha channel to 0xff
           */
          if (FreeRDPColorHasAlpha(bitmap->format))
            memset(bitmap->data, 0xff, bitmap->length);

          if (!interleaved_decompress(context->codecs->interleaved, pSrcData, SrcSize,
                                      DstWidth, DstHeight, bpp, bitmap->data,
                                      bitmap->format, stride, 0, 0, DstWidth, DstHeight,
                                      &gdi->palette))
          {
            WLog_ERR(TAG, "interleaved_decompress failed");
            return FALSE;
          }
        }
        else
        {
          const BOOL fidelity = freerdp_settings_get_bool(
              context->settings, FreeRDP_DrawAllowDynamicColorFidelity);
          freerdp_planar_switch_bgr(context->codecs->planar, fidelity);
          if (!freerdp_bitmap_decompress_planar(
                  context->codecs->planar, pSrcData, SrcSize, DstWidth, DstHeight,
                  bitmap->data, bitmap->format, stride, 0, 0, DstWidth, DstHeight, TRUE))
          {
            WLog_ERR(TAG, "freerdp_bitmap_decompress_planar failed");
            return FALSE;
          }
        }
        break;
    }
  }
  else
  {
    const UINT32 SrcFormat = gdi_get_pixel_format(bpp);
    const size_t sbpp = FreeRDPGetBytesPerPixel(SrcFormat);
    const size_t dbpp = FreeRDPGetBytesPerPixel(bitmap->format);

    if ((sbpp == 0) || (dbpp == 0))
      return FALSE;
    else
    {
      const size_t dstSize = SrcSize * dbpp / sbpp;

      if (dstSize < bitmap->length)
      {
        WLog_ERR(TAG, "dstSize %" PRIuz " < bitmap->length %" PRIu32, dstSize,
                 bitmap->length);
        return FALSE;
      }
    }

    if (!freerdp_image_copy_no_overlap(bitmap->data, bitmap->format, stride, 0, 0, DstWidth,
                                       DstHeight, pSrcData, SrcFormat, 0, 0, 0, &gdi->palette,
                                       FREERDP_FLIP_VERTICAL))
    {
      WLog_ERR(TAG, "freerdp_image_copy failed");
      return FALSE;
    }
  }

  return TRUE;
}

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

  if (!context)
    return FALSE;

  gdi = context->gdi;

  if (!gdi)
    return FALSE;

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

  return TRUE;
}

/* Glyph Class */
static BOOL gdi_Glyph_New(rdpContext* context, rdpGlyph* glyph)
{
  if (!context || !glyph)
    return FALSE;

  gdiGlyph* gdi_glyph = (gdiGlyph*)glyph;
  gdi_glyph->hdc = gdi_GetDC();

  if (!gdi_glyph->hdc)
    return FALSE;

  gdi_glyph->hdc->format = PIXEL_FORMAT_MONO;
  BYTE* data = freerdp_glyph_convert_ex(glyph->cx, glyph->cy, glyph->aj, glyph->cb);

  if (!data)
  {
    gdi_DeleteDC(gdi_glyph->hdc);
    return FALSE;
  }

  gdi_glyph->bitmap = gdi_CreateBitmap(glyph->cx, glyph->cy, PIXEL_FORMAT_MONO, data);

  if (!gdi_glyph->bitmap)
  {
    gdi_DeleteDC(gdi_glyph->hdc);
    winpr_aligned_free(data);
    return FALSE;
  }

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

static void gdi_Glyph_Free(WINPR_ATTR_UNUSED rdpContext* context, rdpGlyph* glyph)
{
  gdiGlyph* gdi_glyph = nullptr;
  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);
    free(glyph->aj);
    free(glyph);
  }
}

static BOOL gdi_Glyph_Draw(rdpContext* context, const rdpGlyph* glyph, INT32 x, INT32 y, INT32 w,
                           INT32 h, INT32 sx, INT32 sy, BOOL fOpRedundant)
{
  const gdiGlyph* gdi_glyph = nullptr;
  rdpGdi* gdi = nullptr;
  HGDI_BRUSH brush = nullptr;
  BOOL rc = FALSE;

  if (!context || !glyph)
    return FALSE;

  gdi = context->gdi;
  gdi_glyph = (const gdiGlyph*)glyph;

  if (!fOpRedundant)
  {
    GDI_RECT rect = WINPR_C_ARRAY_INIT;

    if (x > 0)
      rect.left = x;

    if (y > 0)
      rect.top = y;

    if (x + w > 0)
      rect.right = x + w - 1;

    if (y + h > 0)
      rect.bottom = y + h - 1;

    if ((rect.left < rect.right) && (rect.top < rect.bottom))
    {
      brush = gdi_CreateSolidBrush(gdi->drawing->hdc->bkColor);

      if (!brush)
        return FALSE;

      const BOOL res = gdi_FillRect(gdi->drawing->hdc, &rect, brush);
      gdi_DeleteObject((HGDIOBJECT)brush);
      if (!res)
        return res;
    }
  }

  brush = gdi_CreateSolidBrush(gdi->drawing->hdc->textColor);

  if (!brush)
    return FALSE;

  gdi_SelectObject(gdi->drawing->hdc, (HGDIOBJECT)brush);
  rc = gdi_BitBlt(gdi->drawing->hdc, x, y, w, h, gdi_glyph->hdc, sx, sy, GDI_GLYPH_ORDER,
                  &context->gdi->palette);
  gdi_DeleteObject((HGDIOBJECT)brush);
  return rc;
}

static BOOL gdi_Glyph_BeginDraw(rdpContext* context, INT32 x, INT32 y, INT32 width, INT32 height,
                                UINT32 bgcolor, UINT32 fgcolor, BOOL fOpRedundant)
{
  if (!context || !context->gdi)
    return FALSE;

  rdpGdi* gdi = context->gdi;

  if (!gdi->drawing || !gdi->drawing->hdc)
    return FALSE;

  if (!fOpRedundant)
  {
    if (!gdi_decode_color(gdi, bgcolor, &bgcolor, nullptr))
      return FALSE;

    if (!gdi_decode_color(gdi, fgcolor, &fgcolor, nullptr))
      return FALSE;

    if (!gdi_SetClipRgn(gdi->drawing->hdc, x, y, width, height))
      return FALSE;

    gdi_SetTextColor(gdi->drawing->hdc, bgcolor);
    gdi_SetBkColor(gdi->drawing->hdc, fgcolor);

    {
      GDI_RECT rect = WINPR_C_ARRAY_INIT;
      HGDI_BRUSH brush = gdi_CreateSolidBrush(fgcolor);

      if (!brush)
        return FALSE;

      if (x > 0)
        rect.left = x;

      if (y > 0)
        rect.top = y;

      rect.right = x + width - 1;
      rect.bottom = y + height - 1;

      BOOL res = TRUE;
      if ((x + width > rect.left) && (y + height > rect.top))
        res = gdi_FillRect(gdi->drawing->hdc, &rect, brush);

      gdi_DeleteObject((HGDIOBJECT)brush);
      if (!res)
        return FALSE;
    }

    return gdi_SetNullClipRgn(gdi->drawing->hdc);
  }

  return TRUE;
}

static BOOL gdi_Glyph_EndDraw(rdpContext* context, WINPR_ATTR_UNUSED INT32 x,
                              WINPR_ATTR_UNUSED INT32 y, WINPR_ATTR_UNUSED INT32 width,
                              WINPR_ATTR_UNUSED INT32 height, WINPR_ATTR_UNUSED UINT32 bgcolor,
                              WINPR_ATTR_UNUSED UINT32 fgcolor)
{
  rdpGdi* gdi = nullptr;

  if (!context || !context->gdi)
    return FALSE;

  gdi = context->gdi;

  if (!gdi->drawing || !gdi->drawing->hdc)
    return FALSE;

  return gdi_SetNullClipRgn(gdi->drawing->hdc);
}

/* Graphics Module */
BOOL gdi_register_graphics(rdpGraphics* graphics)
{
  rdpBitmap bitmap = WINPR_C_ARRAY_INIT;
  rdpGlyph glyph = WINPR_C_ARRAY_INIT;
  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);
  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);
  return TRUE;
}

Coverage Report

Created: 2026-09-01 06:34

Line	Count	Source
1		/**
2		* FreeRDP: A Remote Desktop Protocol Implementation
3		* Graphical Objects
4		*
5		* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
6		* Copyright 2016 Armin Novak <armin.novak@thincast.com>
7		* Copyright 2016 Thincast Technologies GmbH
8		*
9		* Licensed under the Apache License, Version 2.0 (the "License");
10		* you may not use this file except in compliance with the License.
11		* You may obtain a copy of the License at
12		*
13		* http://www.apache.org/licenses/LICENSE-2.0
14		*
15		* Unless required by applicable law or agreed to in writing, software
16		* distributed under the License is distributed on an "AS IS" BASIS,
17		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18		* See the License for the specific language governing permissions and
19		* limitations under the License.
20		*/
21
22		#include <freerdp/config.h>
23
24		#include <winpr/crt.h>
25
26		#include <freerdp/log.h>
27		#include <freerdp/freerdp.h>
28		#include <freerdp/gdi/dc.h>
29		#include <freerdp/gdi/shape.h>
30		#include <freerdp/gdi/region.h>
31		#include <freerdp/gdi/bitmap.h>
32
33		#include "clipping.h"
34		#include "drawing.h"
35		#include "brush.h"
36		#include "graphics.h"
37
38		#define TAG FREERDP_TAG("gdi")
39		/* Bitmap Class */
40
41		HGDI_BITMAP gdi_create_bitmap(rdpGdi* gdi, UINT32 nWidth, UINT32 nHeight, UINT32 SrcFormat,
42		BYTE* data)
43	0	{
44	0	UINT32 nSrcStep = 0;
45	0	UINT32 nDstStep = 0;
46	0	BYTE* pSrcData = nullptr;
47	0	BYTE* pDstData = nullptr;
48	0	HGDI_BITMAP bitmap = nullptr;
49
50	0	if (!gdi)
51	0	return nullptr;
52
53	0	nDstStep = nWidth * FreeRDPGetBytesPerPixel(gdi->dstFormat);
54	0	pDstData = winpr_aligned_malloc(1ull * nHeight * nDstStep, 16);
55
56	0	if (!pDstData)
57	0	return nullptr;
58
59	0	pSrcData = data;
60	0	nSrcStep = nWidth * FreeRDPGetBytesPerPixel(SrcFormat);
61
62	0	if (!freerdp_image_copy_no_overlap(pDstData, gdi->dstFormat, nDstStep, 0, 0, nWidth, nHeight,
63	0	pSrcData, SrcFormat, nSrcStep, 0, 0, &gdi->palette,
64	0	FREERDP_FLIP_NONE))
65	0	{
66	0	winpr_aligned_free(pDstData);
67	0	return nullptr;
68	0	}
69
70	0	bitmap = gdi_CreateBitmap(nWidth, nHeight, gdi->dstFormat, pDstData);
71	0	if (!bitmap)
72	0	winpr_aligned_free(pDstData);
73	0	return bitmap;
74	0	}
75
76		static BOOL gdi_Bitmap_New(rdpContext* context, rdpBitmap* bitmap)
77	0	{
78	0	gdiBitmap* gdi_bitmap = nullptr;
79	0	rdpGdi* gdi = context->gdi;
80	0	gdi_bitmap = (gdiBitmap*)bitmap;
81	0	gdi_bitmap->hdc = gdi_CreateCompatibleDC(gdi->hdc);
82
83	0	if (!gdi_bitmap->hdc)
84	0	return FALSE;
85
86	0	if (!bitmap->data)
87	0	gdi_bitmap->bitmap = gdi_CreateCompatibleBitmap(gdi->hdc, bitmap->width, bitmap->height);
88	0	else
89	0	{
90	0	UINT32 format = bitmap->format;
91	0	gdi_bitmap->bitmap =
92	0	gdi_create_bitmap(gdi, bitmap->width, bitmap->height, format, bitmap->data);
93	0	}
94
95	0	if (!gdi_bitmap->bitmap)
96	0	{
97	0	gdi_DeleteDC(gdi_bitmap->hdc);
98	0	gdi_bitmap->hdc = nullptr;
99	0	return FALSE;
100	0	}
101
102	0	gdi_bitmap->hdc->format = gdi_bitmap->bitmap->format;
103	0	gdi_SelectObject(gdi_bitmap->hdc, (HGDIOBJECT)gdi_bitmap->bitmap);
104	0	gdi_bitmap->org_bitmap = nullptr;
105	0	return TRUE;
106	0	}
107
108		static void gdi_Bitmap_Free(WINPR_ATTR_UNUSED rdpContext* context, rdpBitmap* bitmap)
109	0	{
110	0	gdiBitmap* gdi_bitmap = (gdiBitmap*)bitmap;
111
112	0	if (gdi_bitmap)
113	0	{
114	0	if (gdi_bitmap->hdc)
115	0	gdi_SelectObject(gdi_bitmap->hdc, (HGDIOBJECT)gdi_bitmap->org_bitmap);
116
117	0	gdi_DeleteObject((HGDIOBJECT)gdi_bitmap->bitmap);
118	0	gdi_DeleteDC(gdi_bitmap->hdc);
119	0	winpr_aligned_free(bitmap->data);
120	0	}
121
122	0	free(bitmap);
123	0	}
124
125		static BOOL gdi_Bitmap_Paint(rdpContext* context, rdpBitmap* bitmap)
126	0	{
127	0	gdiBitmap* gdi_bitmap = (gdiBitmap*)bitmap;
128	0	UINT32 width = bitmap->right - bitmap->left + 1;
129	0	UINT32 height = bitmap->bottom - bitmap->top + 1;
130	0	return gdi_BitBlt(context->gdi->primary->hdc, WINPR_ASSERTING_INT_CAST(int, bitmap->left),
131	0	WINPR_ASSERTING_INT_CAST(int, bitmap->top),
132	0	WINPR_ASSERTING_INT_CAST(int, width), WINPR_ASSERTING_INT_CAST(int, height),
133	0	gdi_bitmap->hdc, 0, 0, GDI_SRCCOPY, &context->gdi->palette);
134	0	}
135
136		WINPR_ATTR_NODISCARD
137		static BOOL gdi_Bitmap_Rfx(rdpContext* context, rdpBitmap* bitmap, const BYTE* pSrcData,
138		UINT32 SrcSize)
139	0	{
140	0	WINPR_ASSERT(context);
141	0	WINPR_ASSERT(bitmap);
142	0	WINPR_ASSERT(pSrcData \|\| (SrcSize == 0));
143
144	0	REGION16 invalidRegion = WINPR_C_ARRAY_INIT;
145	0	region16_init(&invalidRegion);
146
147	0	const UINT32 stride = bitmap->width * FreeRDPGetBytesPerPixel(bitmap->format);
148
149	0	const BOOL rc =
150	0	rfx_process_message(context->codecs->rfx, pSrcData, SrcSize, bitmap->left, bitmap->top,
151	0	bitmap->data, bitmap->format, stride, bitmap->height, &invalidRegion);
152	0	region16_uninit(&invalidRegion);
153
154	0	if (!rc)
155	0	{
156	0	WLog_ERR(TAG, "rfx_process_message failed");
157	0	return FALSE;
158	0	}
159	0	return TRUE;
160	0	}
161
162		static BOOL gdi_Bitmap_Decompress(rdpContext* context, rdpBitmap* bitmap, const BYTE* pSrcData,
163		UINT32 DstWidth, UINT32 DstHeight, UINT32 bpp, UINT32 length,
164		BOOL compressed, UINT32 codecId)
165	0	{
166	0	WINPR_ASSERT(context);
167	0	WINPR_ASSERT(bitmap);
168
169	0	UINT32 SrcSize = length;
170	0	rdpGdi* gdi = context->gdi;
171	0	WINPR_ASSERT(gdi);
172
173	0	bitmap->compressed = FALSE;
174	0	bitmap->format = gdi->dstFormat;
175
176	0	if ((FreeRDPGetBytesPerPixel(bitmap->format) == 0) \|\| (DstWidth == 0) \|\| (DstHeight == 0) \|\|
177	0	(DstWidth > UINT32_MAX / DstHeight) \|\|
178	0	((DstWidth * DstHeight) > (UINT32_MAX / FreeRDPGetBytesPerPixel(bitmap->format))))
179	0	{
180	0	WLog_ERR(TAG, "invalid input data");
181	0	return FALSE;
182	0	}
183
184	0	const DWORD xbpp = FreeRDPGetBytesPerPixel(bitmap->format);
185
186	0	WINPR_ASSERT(!bitmap->data);
187	0	const UINT32 stride = DstWidth * xbpp;
188	0	bitmap->length = stride * DstHeight;
189	0	bitmap->data = (BYTE*)winpr_aligned_malloc(bitmap->length, 16);
190
191	0	if (!bitmap->data)
192	0	return FALSE;
193
194	0	if (compressed)
195	0	{
196	0	WINPR_ASSERT(context->codecs);
197	0	switch (codecId)
198	0	{
199	0	case RDP_CODEC_ID_REMOTEFX:
200	0	case RDP_CODEC_ID_IMAGE_REMOTEFX:
201	0	if (!gdi_Bitmap_Rfx(context, bitmap, pSrcData, SrcSize))
202	0	return FALSE;
203	0	break;
204	0	case RDP_CODEC_ID_NSCODEC:
205	0	{
206	0	const int status = nsc_process_message(
207	0	context->codecs->nsc, 32, DstWidth, DstHeight, pSrcData, SrcSize, bitmap->data,
208	0	bitmap->format, stride, 0, 0, DstWidth, DstHeight, FREERDP_FLIP_VERTICAL);
209
210	0	if (status < 1)
211	0	{
212	0	WLog_ERR(TAG, "nsc_process_message failed");
213	0	return FALSE;
214	0	}
215	0	}
216	0	break;
217	0	default:
218	0	if (bpp < 32)
219	0	{
220		/* Bitmap has an alpha channel, source does not necessarily have one.
221		* Prefill the alpha channel to 0xff
222		*/
223	0	if (FreeRDPColorHasAlpha(bitmap->format))
224	0	memset(bitmap->data, 0xff, bitmap->length);
225
226	0	if (!interleaved_decompress(context->codecs->interleaved, pSrcData, SrcSize,
227	0	DstWidth, DstHeight, bpp, bitmap->data,
228	0	bitmap->format, stride, 0, 0, DstWidth, DstHeight,
229	0	&gdi->palette))
230	0	{
231	0	WLog_ERR(TAG, "interleaved_decompress failed");
232	0	return FALSE;
233	0	}
234	0	}
235	0	else
236	0	{
237	0	const BOOL fidelity = freerdp_settings_get_bool(
238	0	context->settings, FreeRDP_DrawAllowDynamicColorFidelity);
239	0	freerdp_planar_switch_bgr(context->codecs->planar, fidelity);
240	0	if (!freerdp_bitmap_decompress_planar(
241	0	context->codecs->planar, pSrcData, SrcSize, DstWidth, DstHeight,
242	0	bitmap->data, bitmap->format, stride, 0, 0, DstWidth, DstHeight, TRUE))
243	0	{
244	0	WLog_ERR(TAG, "freerdp_bitmap_decompress_planar failed");
245	0	return FALSE;
246	0	}
247	0	}
248	0	break;
249	0	}
250	0	}
251	0	else
252	0	{
253	0	const UINT32 SrcFormat = gdi_get_pixel_format(bpp);
254	0	const size_t sbpp = FreeRDPGetBytesPerPixel(SrcFormat);
255	0	const size_t dbpp = FreeRDPGetBytesPerPixel(bitmap->format);
256
257	0	if ((sbpp == 0) \|\| (dbpp == 0))
258	0	return FALSE;
259	0	else
260	0	{
261	0	const size_t dstSize = SrcSize * dbpp / sbpp;
262
263	0	if (dstSize < bitmap->length)
264	0	{
265	0	WLog_ERR(TAG, "dstSize %" PRIuz " < bitmap->length %" PRIu32, dstSize,
266	0	bitmap->length);
267	0	return FALSE;
268	0	}
269	0	}
270
271	0	if (!freerdp_image_copy_no_overlap(bitmap->data, bitmap->format, stride, 0, 0, DstWidth,
272	0	DstHeight, pSrcData, SrcFormat, 0, 0, 0, &gdi->palette,
273	0	FREERDP_FLIP_VERTICAL))
274	0	{
275	0	WLog_ERR(TAG, "freerdp_image_copy failed");
276	0	return FALSE;
277	0	}
278	0	}
279
280	0	return TRUE;
281	0	}
282
283		static BOOL gdi_Bitmap_SetSurface(rdpContext* context, rdpBitmap* bitmap, BOOL primary)
284	0	{
285	0	rdpGdi* gdi = nullptr;
286
287	0	if (!context)
288	0	return FALSE;
289
290	0	gdi = context->gdi;
291
292	0	if (!gdi)
293	0	return FALSE;
294
295	0	if (primary)
296	0	gdi->drawing = gdi->primary;
297	0	else
298	0	gdi->drawing = (gdiBitmap*)bitmap;
299
300	0	return TRUE;
301	0	}
302
303		/* Glyph Class */
304		static BOOL gdi_Glyph_New(rdpContext* context, rdpGlyph* glyph)
305	0	{
306	0	if (!context \|\| !glyph)
307	0	return FALSE;
308
309	0	gdiGlyph* gdi_glyph = (gdiGlyph*)glyph;
310	0	gdi_glyph->hdc = gdi_GetDC();
311
312	0	if (!gdi_glyph->hdc)
313	0	return FALSE;
314
315	0	gdi_glyph->hdc->format = PIXEL_FORMAT_MONO;
316	0	BYTE* data = freerdp_glyph_convert_ex(glyph->cx, glyph->cy, glyph->aj, glyph->cb);
317
318	0	if (!data)
319	0	{
320	0	gdi_DeleteDC(gdi_glyph->hdc);
321	0	return FALSE;
322	0	}
323
324	0	gdi_glyph->bitmap = gdi_CreateBitmap(glyph->cx, glyph->cy, PIXEL_FORMAT_MONO, data);
325
326	0	if (!gdi_glyph->bitmap)
327	0	{
328	0	gdi_DeleteDC(gdi_glyph->hdc);
329	0	winpr_aligned_free(data);
330	0	return FALSE;
331	0	}
332
333	0	gdi_SelectObject(gdi_glyph->hdc, (HGDIOBJECT)gdi_glyph->bitmap);
334	0	gdi_glyph->org_bitmap = nullptr;
335	0	return TRUE;
336	0	}
337
338		static void gdi_Glyph_Free(WINPR_ATTR_UNUSED rdpContext* context, rdpGlyph* glyph)
339	0	{
340	0	gdiGlyph* gdi_glyph = nullptr;
341	0	gdi_glyph = (gdiGlyph*)glyph;
342
343	0	if (gdi_glyph)
344	0	{
345	0	gdi_SelectObject(gdi_glyph->hdc, (HGDIOBJECT)gdi_glyph->org_bitmap);
346	0	gdi_DeleteObject((HGDIOBJECT)gdi_glyph->bitmap);
347	0	gdi_DeleteDC(gdi_glyph->hdc);
348	0	free(glyph->aj);
349	0	free(glyph);
350	0	}
351	0	}
352
353		static BOOL gdi_Glyph_Draw(rdpContext* context, const rdpGlyph* glyph, INT32 x, INT32 y, INT32 w,
354		INT32 h, INT32 sx, INT32 sy, BOOL fOpRedundant)
355	0	{
356	0	const gdiGlyph* gdi_glyph = nullptr;
357	0	rdpGdi* gdi = nullptr;
358	0	HGDI_BRUSH brush = nullptr;
359	0	BOOL rc = FALSE;
360
361	0	if (!context \|\| !glyph)
362	0	return FALSE;
363
364	0	gdi = context->gdi;
365	0	gdi_glyph = (const gdiGlyph*)glyph;
366
367	0	if (!fOpRedundant)
368	0	{
369	0	GDI_RECT rect = WINPR_C_ARRAY_INIT;
370
371	0	if (x > 0)
372	0	rect.left = x;
373
374	0	if (y > 0)
375	0	rect.top = y;
376
377	0	if (x + w > 0)
378	0	rect.right = x + w - 1;
379
380	0	if (y + h > 0)
381	0	rect.bottom = y + h - 1;
382
383	0	if ((rect.left < rect.right) && (rect.top < rect.bottom))
384	0	{
385	0	brush = gdi_CreateSolidBrush(gdi->drawing->hdc->bkColor);
386
387	0	if (!brush)
388	0	return FALSE;
389
390	0	const BOOL res = gdi_FillRect(gdi->drawing->hdc, &rect, brush);
391	0	gdi_DeleteObject((HGDIOBJECT)brush);
392	0	if (!res)
393	0	return res;
394	0	}
395	0	}
396
397	0	brush = gdi_CreateSolidBrush(gdi->drawing->hdc->textColor);
398
399	0	if (!brush)
400	0	return FALSE;
401
402	0	gdi_SelectObject(gdi->drawing->hdc, (HGDIOBJECT)brush);
403	0	rc = gdi_BitBlt(gdi->drawing->hdc, x, y, w, h, gdi_glyph->hdc, sx, sy, GDI_GLYPH_ORDER,
404	0	&context->gdi->palette);
405	0	gdi_DeleteObject((HGDIOBJECT)brush);
406	0	return rc;
407	0	}
408
409		static BOOL gdi_Glyph_BeginDraw(rdpContext* context, INT32 x, INT32 y, INT32 width, INT32 height,
410		UINT32 bgcolor, UINT32 fgcolor, BOOL fOpRedundant)
411	0	{
412	0	if (!context \|\| !context->gdi)
413	0	return FALSE;
414
415	0	rdpGdi* gdi = context->gdi;
416
417	0	if (!gdi->drawing \|\| !gdi->drawing->hdc)
418	0	return FALSE;
419
420	0	if (!fOpRedundant)
421	0	{
422	0	if (!gdi_decode_color(gdi, bgcolor, &bgcolor, nullptr))
423	0	return FALSE;
424
425	0	if (!gdi_decode_color(gdi, fgcolor, &fgcolor, nullptr))
426	0	return FALSE;
427
428	0	if (!gdi_SetClipRgn(gdi->drawing->hdc, x, y, width, height))
429	0	return FALSE;
430
431	0	gdi_SetTextColor(gdi->drawing->hdc, bgcolor);
432	0	gdi_SetBkColor(gdi->drawing->hdc, fgcolor);
433
434	0	{
435	0	GDI_RECT rect = WINPR_C_ARRAY_INIT;
436	0	HGDI_BRUSH brush = gdi_CreateSolidBrush(fgcolor);
437
438	0	if (!brush)
439	0	return FALSE;
440
441	0	if (x > 0)
442	0	rect.left = x;
443
444	0	if (y > 0)
445	0	rect.top = y;
446
447	0	rect.right = x + width - 1;
448	0	rect.bottom = y + height - 1;
449
450	0	BOOL res = TRUE;
451	0	if ((x + width > rect.left) && (y + height > rect.top))
452	0	res = gdi_FillRect(gdi->drawing->hdc, &rect, brush);
453
454	0	gdi_DeleteObject((HGDIOBJECT)brush);
455	0	if (!res)
456	0	return FALSE;
457	0	}
458
459	0	return gdi_SetNullClipRgn(gdi->drawing->hdc);
460	0	}
461
462	0	return TRUE;
463	0	}
464
465		static BOOL gdi_Glyph_EndDraw(rdpContext* context, WINPR_ATTR_UNUSED INT32 x,
466		WINPR_ATTR_UNUSED INT32 y, WINPR_ATTR_UNUSED INT32 width,
467		WINPR_ATTR_UNUSED INT32 height, WINPR_ATTR_UNUSED UINT32 bgcolor,
468		WINPR_ATTR_UNUSED UINT32 fgcolor)
469	0	{
470	0	rdpGdi* gdi = nullptr;
471
472	0	if (!context \|\| !context->gdi)
473	0	return FALSE;
474
475	0	gdi = context->gdi;
476
477	0	if (!gdi->drawing \|\| !gdi->drawing->hdc)
478	0	return FALSE;
479
480	0	return gdi_SetNullClipRgn(gdi->drawing->hdc);
481	0	}
482
483		/* Graphics Module */
484		BOOL gdi_register_graphics(rdpGraphics* graphics)
485	0	{
486	0	rdpBitmap bitmap = WINPR_C_ARRAY_INIT;
487	0	rdpGlyph glyph = WINPR_C_ARRAY_INIT;
488	0	bitmap.size = sizeof(gdiBitmap);
489	0	bitmap.New = gdi_Bitmap_New;
490	0	bitmap.Free = gdi_Bitmap_Free;
491	0	bitmap.Paint = gdi_Bitmap_Paint;
492	0	bitmap.Decompress = gdi_Bitmap_Decompress;
493	0	bitmap.SetSurface = gdi_Bitmap_SetSurface;
494	0	graphics_register_bitmap(graphics, &bitmap);
495	0	glyph.size = sizeof(gdiGlyph);
496	0	glyph.New = gdi_Glyph_New;
497	0	glyph.Free = gdi_Glyph_Free;
498	0	glyph.Draw = gdi_Glyph_Draw;
499	0	glyph.BeginDraw = gdi_Glyph_BeginDraw;
500	0	glyph.EndDraw = gdi_Glyph_EndDraw;
501	0	graphics_register_glyph(graphics, &glyph);
502	0	return TRUE;
503	0	}