/src/FreeRDP/libfreerdp/gdi/gfx.c

Source
/**
 * FreeRDP: A Remote Desktop Protocol Implementation
 * GDI Graphics Pipeline
 *
 * Copyright 2014 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 "../core/update.h"

#include <winpr/assert.h>
#include <winpr/cast.h>

#include <freerdp/api.h>
#include <freerdp/log.h>
#include <freerdp/gdi/gfx.h>
#include <freerdp/gdi/region.h>
#include <freerdp/utils/gfx.h>
#include <math.h>

#define TAG FREERDP_TAG("gdi")

static BOOL is_rect_valid(const RECTANGLE_16* rect, size_t width, size_t height)
{
  if (!rect)
    return FALSE;
  if ((rect->left > rect->right) || (rect->right > width))
    return FALSE;
  if ((rect->top > rect->bottom) || (rect->bottom > height))
    return FALSE;
  return TRUE;
}

static BOOL is_within_surface(const gdiGfxSurface* surface, const RDPGFX_SURFACE_COMMAND* cmd)
{
  RECTANGLE_16 rect;
  if (!surface || !cmd)
    return FALSE;
  rect.left = (UINT16)MIN(UINT16_MAX, cmd->left);
  rect.top = (UINT16)MIN(UINT16_MAX, cmd->top);
  rect.right = (UINT16)MIN(UINT16_MAX, cmd->right);
  rect.bottom = (UINT16)MIN(UINT16_MAX, cmd->bottom);
  if (!is_rect_valid(&rect, surface->width, surface->height))
  {
    WLog_ERR(TAG,
             "Command rect %" PRIu32 "x%" PRIu32 "-%" PRIu32 "x%" PRIu32
             " not within bounds of %" PRIu32 "x%" PRIu32,
             rect.left, rect.top, cmd->width, cmd->height, surface->width, surface->height);
    return FALSE;
  }

  return TRUE;
}

static DWORD gfx_align_scanline(DWORD widthInBytes, DWORD alignment)
{
  const UINT32 align = alignment;
  const UINT32 pad = align - (widthInBytes % alignment);
  UINT32 scanline = widthInBytes;

  if (align != pad)
    scanline += pad;

  return scanline;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_ResetGraphics(RdpgfxClientContext* context,
                              const RDPGFX_RESET_GRAPHICS_PDU* resetGraphics)
{
  UINT rc = ERROR_INTERNAL_ERROR;
  UINT16 count = 0;
  UINT32 DesktopWidth = 0;
  UINT32 DesktopHeight = 0;
  UINT16* pSurfaceIds = NULL;
  rdpGdi* gdi = NULL;
  rdpUpdate* update = NULL;
  rdpSettings* settings = NULL;

  WINPR_ASSERT(context);
  WINPR_ASSERT(resetGraphics);

  gdi = (rdpGdi*)context->custom;
  WINPR_ASSERT(gdi);

  update = gdi->context->update;
  WINPR_ASSERT(update);

  settings = gdi->context->settings;
  WINPR_ASSERT(settings);
  EnterCriticalSection(&context->mux);
  DesktopWidth = resetGraphics->width;
  DesktopHeight = resetGraphics->height;

  if (!freerdp_settings_set_uint32(settings, FreeRDP_DesktopWidth, DesktopWidth))
    goto fail;
  if (!freerdp_settings_set_uint32(settings, FreeRDP_DesktopHeight, DesktopHeight))
    goto fail;

  if (update)
  {
    WINPR_ASSERT(update->DesktopResize);
    if (!update->DesktopResize(gdi->context))
      goto fail;
  }

  WINPR_ASSERT(context->GetSurfaceIds);
  rc = context->GetSurfaceIds(context, &pSurfaceIds, &count);
  if (rc != CHANNEL_RC_OK)
    goto fail;

  for (UINT32 index = 0; index < count; index++)
  {
    WINPR_ASSERT(context->GetSurfaceData);
    gdiGfxSurface* surface =
        (gdiGfxSurface*)context->GetSurfaceData(context, pSurfaceIds[index]);

    if (!surface)
      continue;

    memset(surface->data, 0xFF, (size_t)surface->scanline * surface->height);
    region16_clear(&surface->invalidRegion);
  }

  free(pSurfaceIds);

  if (!freerdp_settings_get_bool(gdi->context->settings, FreeRDP_DeactivateClientDecoding))
  {
    const UINT32 width = (UINT32)MAX(0, gdi->width);
    const UINT32 height = (UINT32)MAX(0, gdi->height);

    if (!freerdp_client_codecs_reset(
            context->codecs, freerdp_settings_get_codecs_flags(settings), width, height))
    {
      goto fail;
    }
    if (!freerdp_client_codecs_reset(
            gdi->context->codecs, freerdp_settings_get_codecs_flags(settings), width, height))
    {
      goto fail;
    }
  }

  rc = CHANNEL_RC_OK;
fail:
  LeaveCriticalSection(&context->mux);
  return rc;
}

static UINT gdi_OutputUpdate(rdpGdi* gdi, gdiGfxSurface* surface)
{
  UINT rc = ERROR_INTERNAL_ERROR;
  UINT32 surfaceX = 0;
  UINT32 surfaceY = 0;
  RECTANGLE_16 surfaceRect;
  const RECTANGLE_16* rects = NULL;
  UINT32 nbRects = 0;
  rdpUpdate* update = NULL;

  WINPR_ASSERT(gdi);
  WINPR_ASSERT(gdi->context);
  WINPR_ASSERT(surface);

  update = gdi->context->update;
  WINPR_ASSERT(update);

  if (gdi->suppressOutput)
    return CHANNEL_RC_OK;

  surfaceX = surface->outputOriginX;
  surfaceY = surface->outputOriginY;
  surfaceRect.left = 0;
  surfaceRect.top = 0;
  surfaceRect.right = (UINT16)MIN(UINT16_MAX, surface->mappedWidth);
  surfaceRect.bottom = (UINT16)MIN(UINT16_MAX, surface->mappedHeight);
  if (!region16_intersect_rect(&(surface->invalidRegion), &(surface->invalidRegion),
                               &surfaceRect))
    goto fail;

  const double sx = surface->outputTargetWidth / (double)surface->mappedWidth;
  const double sy = surface->outputTargetHeight / (double)surface->mappedHeight;

  if (!(rects = region16_rects(&surface->invalidRegion, &nbRects)) || !nbRects)
    return CHANNEL_RC_OK;

  if (!update_begin_paint(update))
    goto fail;

  for (UINT32 i = 0; i < nbRects; i++)
  {
    const UINT32 nXSrc = rects[i].left;
    const UINT32 nYSrc = rects[i].top;
    const UINT32 nXDst = (UINT32)MIN(surfaceX + nXSrc * sx, gdi->width - 1);
    const UINT32 nYDst = (UINT32)MIN(surfaceY + nYSrc * sy, gdi->height - 1);
    const UINT32 swidth = rects[i].right - rects[i].left;
    const UINT32 sheight = rects[i].bottom - rects[i].top;
    const UINT32 dwidth = MIN((UINT32)(swidth * sx), (UINT32)gdi->width - nXDst);
    const UINT32 dheight = MIN((UINT32)(sheight * sy), (UINT32)gdi->height - nYDst);

    if (!freerdp_image_scale(gdi->primary_buffer, gdi->dstFormat, gdi->stride, nXDst, nYDst,
                             dwidth, dheight, surface->data, surface->format, surface->scanline,
                             nXSrc, nYSrc, swidth, sheight))
    {
      rc = CHANNEL_RC_NULL_DATA;
      goto fail;
    }

    if (!gdi_InvalidateRegion(gdi->primary->hdc, (INT32)nXDst, (INT32)nYDst, (INT32)dwidth,
                              (INT32)dheight))
      goto fail;
  }

  rc = CHANNEL_RC_OK;
fail:

  if (!update_end_paint(update))
    rc = ERROR_INTERNAL_ERROR;

  region16_clear(&(surface->invalidRegion));
  return rc;
}

static UINT gdi_WindowUpdate(RdpgfxClientContext* context, gdiGfxSurface* surface)
{
  WINPR_ASSERT(context);
  WINPR_ASSERT(surface);
  return IFCALLRESULT(CHANNEL_RC_OK, context->UpdateWindowFromSurface, context, surface);
}

static UINT gdi_UpdateSurfaces(RdpgfxClientContext* context)
{
  UINT16 count = 0;
  UINT16* pSurfaceIds = NULL;

  WINPR_ASSERT(context);

  rdpGdi* gdi = (rdpGdi*)context->custom;
  WINPR_ASSERT(gdi);

  EnterCriticalSection(&context->mux);

  WINPR_ASSERT(context->GetSurfaceIds);
  UINT status = context->GetSurfaceIds(context, &pSurfaceIds, &count);
  if (status != CHANNEL_RC_OK)
    goto fail;

  for (UINT32 index = 0; index < count; index++)
  {
    WINPR_ASSERT(context->GetSurfaceData);
    gdiGfxSurface* surface =
        (gdiGfxSurface*)context->GetSurfaceData(context, pSurfaceIds[index]);

    if (!surface)
      continue;

    /* Already handled in UpdateSurfaceArea callbacks */
    if (context->UpdateSurfaceArea)
    {
      if (surface->handleInUpdateSurfaceArea)
        continue;
    }

    if (surface->outputMapped)
      status = gdi_OutputUpdate(gdi, surface);
    else if (surface->windowMapped)
      status = gdi_WindowUpdate(context, surface);

    if (status != CHANNEL_RC_OK)
      break;
  }

fail:
  free(pSurfaceIds);
  LeaveCriticalSection(&context->mux);
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_StartFrame(RdpgfxClientContext* context, const RDPGFX_START_FRAME_PDU* startFrame)
{
  rdpGdi* gdi = NULL;

  WINPR_ASSERT(context);
  WINPR_ASSERT(startFrame);

  gdi = (rdpGdi*)context->custom;
  WINPR_ASSERT(gdi);
  gdi->inGfxFrame = TRUE;
  gdi->frameId = startFrame->frameId;
  return CHANNEL_RC_OK;
}

static UINT gdi_call_update_surfaces(RdpgfxClientContext* context)
{
  WINPR_ASSERT(context);
  return IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaces, context);
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_EndFrame(RdpgfxClientContext* context,
                         WINPR_ATTR_UNUSED const RDPGFX_END_FRAME_PDU* endFrame)
{
  WINPR_ASSERT(context);
  WINPR_ASSERT(endFrame);

  rdpGdi* gdi = (rdpGdi*)context->custom;
  WINPR_ASSERT(gdi);
  const UINT status = gdi_call_update_surfaces(context);
  gdi->inGfxFrame = FALSE;
  return status;
}

static UINT gdi_interFrameUpdate(rdpGdi* gdi, RdpgfxClientContext* context)
{
  WINPR_ASSERT(gdi);
  UINT status = CHANNEL_RC_OK;
  if (!gdi->inGfxFrame)
    status = gdi_call_update_surfaces(context);
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceCommand_Uncompressed(rdpGdi* gdi, RdpgfxClientContext* context,
                                            const RDPGFX_SURFACE_COMMAND* cmd)
{
  UINT status = CHANNEL_RC_OK;
  gdiGfxSurface* surface = NULL;
  RECTANGLE_16 invalidRect;
  DWORD bpp = 0;
  size_t size = 0;
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(context);
  WINPR_ASSERT(cmd);

  WINPR_ASSERT(context->GetSurfaceData);
  surface =
      (gdiGfxSurface*)context->GetSurfaceData(context, (UINT16)MIN(UINT16_MAX, cmd->surfaceId));

  if (!surface)
  {
    WLog_ERR(TAG, "unable to retrieve surfaceData for surfaceId=%" PRIu32 "", cmd->surfaceId);
    return ERROR_NOT_FOUND;
  }

  if (!is_within_surface(surface, cmd))
    return ERROR_INVALID_DATA;

  bpp = FreeRDPGetBytesPerPixel(cmd->format);
  size = 1ull * bpp * cmd->width * cmd->height;
  if (cmd->length < size)
  {
    WLog_ERR(TAG, "Not enough data, got %" PRIu32 ", expected %" PRIuz, cmd->length, size);
    return ERROR_INVALID_DATA;
  }

  if (!freerdp_image_copy_no_overlap(surface->data, surface->format, surface->scanline, cmd->left,
                                     cmd->top, cmd->width, cmd->height, cmd->data, cmd->format, 0,
                                     0, 0, NULL, FREERDP_FLIP_NONE))
    return ERROR_INTERNAL_ERROR;

  invalidRect.left = (UINT16)MIN(UINT16_MAX, cmd->left);
  invalidRect.top = (UINT16)MIN(UINT16_MAX, cmd->top);
  invalidRect.right = (UINT16)MIN(UINT16_MAX, cmd->right);
  invalidRect.bottom = (UINT16)MIN(UINT16_MAX, cmd->bottom);
  if (!region16_union_rect(&(surface->invalidRegion), &(surface->invalidRegion), &invalidRect))
    goto fail;
  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId, 1,
                        &invalidRect);

  if (status != CHANNEL_RC_OK)
    goto fail;

  status = gdi_interFrameUpdate(gdi, context);

fail:
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceCommand_RemoteFX(rdpGdi* gdi, RdpgfxClientContext* context,
                                        const RDPGFX_SURFACE_COMMAND* cmd)
{
  UINT status = ERROR_INTERNAL_ERROR;
  gdiGfxSurface* surface = NULL;
  REGION16 invalidRegion;
  const RECTANGLE_16* rects = NULL;
  UINT32 nrRects = 0;
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(context);
  WINPR_ASSERT(cmd);

  WINPR_ASSERT(context->GetSurfaceData);
  surface =
      (gdiGfxSurface*)context->GetSurfaceData(context, (UINT16)MIN(UINT16_MAX, cmd->surfaceId));

  if (!surface)
  {
    WLog_ERR(TAG, "unable to retrieve surfaceData for surfaceId=%" PRIu32 "", cmd->surfaceId);
    return ERROR_NOT_FOUND;
  }

  WINPR_ASSERT(surface->codecs);
  rfx_context_set_pixel_format(surface->codecs->rfx, cmd->format);
  region16_init(&invalidRegion);

  if (!rfx_process_message(surface->codecs->rfx, cmd->data, cmd->length, cmd->left, cmd->top,
                           surface->data, surface->format, surface->scanline, surface->height,
                           &invalidRegion))
  {
    WLog_ERR(TAG, "Failed to process RemoteFX message");
    goto fail;
  }

  rects = region16_rects(&invalidRegion, &nrRects);
  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId,
                        nrRects, rects);

  if (status != CHANNEL_RC_OK)
    goto fail;

  for (UINT32 x = 0; x < nrRects; x++)
  {
    if (!region16_union_rect(&surface->invalidRegion, &surface->invalidRegion, &rects[x]))
      goto fail;
  }

  status = gdi_interFrameUpdate(gdi, context);

fail:
  region16_uninit(&invalidRegion);
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceCommand_ClearCodec(rdpGdi* gdi, RdpgfxClientContext* context,
                                          const RDPGFX_SURFACE_COMMAND* cmd)
{
  INT32 rc = 0;
  UINT status = CHANNEL_RC_OK;
  gdiGfxSurface* surface = NULL;
  RECTANGLE_16 invalidRect;
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(context);
  WINPR_ASSERT(cmd);

  WINPR_ASSERT(context->GetSurfaceData);
  surface =
      (gdiGfxSurface*)context->GetSurfaceData(context, (UINT16)MIN(UINT16_MAX, cmd->surfaceId));

  if (!surface)
  {
    WLog_ERR(TAG, "unable to retrieve surfaceData for surfaceId=%" PRIu32 "", cmd->surfaceId);
    return ERROR_NOT_FOUND;
  }

  WINPR_ASSERT(surface->codecs);
  rc = clear_decompress(surface->codecs->clear, cmd->data, cmd->length, cmd->width, cmd->height,
                        surface->data, surface->format, surface->scanline, cmd->left, cmd->top,
                        surface->width, surface->height, &gdi->palette);

  if (rc < 0)
  {
    WLog_ERR(TAG, "clear_decompress failure: %" PRId32 "", rc);
    return ERROR_INTERNAL_ERROR;
  }

  invalidRect.left = (UINT16)MIN(UINT16_MAX, cmd->left);
  invalidRect.top = (UINT16)MIN(UINT16_MAX, cmd->top);
  invalidRect.right = (UINT16)MIN(UINT16_MAX, cmd->right);
  invalidRect.bottom = (UINT16)MIN(UINT16_MAX, cmd->bottom);
  if (!region16_union_rect(&(surface->invalidRegion), &(surface->invalidRegion), &invalidRect))
    goto fail;
  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId, 1,
                        &invalidRect);

  if (status != CHANNEL_RC_OK)
    goto fail;

  status = gdi_interFrameUpdate(gdi, context);

fail:
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceCommand_Planar(rdpGdi* gdi, RdpgfxClientContext* context,
                                      const RDPGFX_SURFACE_COMMAND* cmd)
{
  UINT status = CHANNEL_RC_OK;
  BYTE* DstData = NULL;
  gdiGfxSurface* surface = NULL;
  RECTANGLE_16 invalidRect;
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(context);
  WINPR_ASSERT(cmd);

  WINPR_ASSERT(context->GetSurfaceData);
  surface =
      (gdiGfxSurface*)context->GetSurfaceData(context, (UINT16)MIN(UINT16_MAX, cmd->surfaceId));

  if (!surface)
  {
    WLog_ERR(TAG, "unable to retrieve surfaceData for surfaceId=%" PRIu32 "", cmd->surfaceId);
    return ERROR_NOT_FOUND;
  }

  DstData = surface->data;

  if (!is_within_surface(surface, cmd))
    return ERROR_INVALID_DATA;

  if (!freerdp_bitmap_decompress_planar(surface->codecs->planar, cmd->data, cmd->length,
                                        cmd->width, cmd->height, DstData, surface->format,
                                        surface->scanline, cmd->left, cmd->top, cmd->width,
                                        cmd->height, FALSE))
    return ERROR_INTERNAL_ERROR;

  invalidRect.left = (UINT16)MIN(UINT16_MAX, cmd->left);
  invalidRect.top = (UINT16)MIN(UINT16_MAX, cmd->top);
  invalidRect.right = (UINT16)MIN(UINT16_MAX, cmd->right);
  invalidRect.bottom = (UINT16)MIN(UINT16_MAX, cmd->bottom);
  if (!region16_union_rect(&(surface->invalidRegion), &(surface->invalidRegion), &invalidRect))
    goto fail;
  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId, 1,
                        &invalidRect);

  if (status != CHANNEL_RC_OK)
    goto fail;

  status = gdi_interFrameUpdate(gdi, context);

fail:
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceCommand_AVC420(rdpGdi* gdi, RdpgfxClientContext* context,
                                      const RDPGFX_SURFACE_COMMAND* cmd)
{
#ifdef WITH_GFX_H264
  INT32 rc = 0;
  UINT status = CHANNEL_RC_OK;
  gdiGfxSurface* surface = NULL;
  RDPGFX_H264_METABLOCK* meta = NULL;
  RDPGFX_AVC420_BITMAP_STREAM* bs = NULL;
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(context);
  WINPR_ASSERT(cmd);

  WINPR_ASSERT(context->GetSurfaceData);
  surface =
      (gdiGfxSurface*)context->GetSurfaceData(context, (UINT16)MIN(UINT16_MAX, cmd->surfaceId));

  if (!surface)
  {
    WLog_ERR(TAG, "unable to retrieve surfaceData for surfaceId=%" PRIu32 "", cmd->surfaceId);
    return ERROR_NOT_FOUND;
  }

  if (!surface->h264)
  {
    surface->h264 = h264_context_new(FALSE);

    if (!surface->h264)
    {
      WLog_ERR(TAG, "unable to create h264 context");
      return ERROR_NOT_ENOUGH_MEMORY;
    }

    if (!h264_context_reset(surface->h264, surface->width, surface->height))
      return ERROR_INTERNAL_ERROR;
  }

  if (!surface->h264)
    return ERROR_NOT_SUPPORTED;

  bs = (RDPGFX_AVC420_BITMAP_STREAM*)cmd->extra;

  if (!bs)
    return ERROR_INTERNAL_ERROR;

  meta = &(bs->meta);
  rc = avc420_decompress(surface->h264, bs->data, bs->length, surface->data, surface->format,
                         surface->scanline, surface->width, surface->height, meta->regionRects,
                         meta->numRegionRects);

  if (rc < 0)
  {
    WLog_WARN(TAG, "avc420_decompress failure: %" PRId32 ", ignoring update.", rc);
    return CHANNEL_RC_OK;
  }

  for (UINT32 i = 0; i < meta->numRegionRects; i++)
  {
    if (!region16_union_rect(&(surface->invalidRegion), &(surface->invalidRegion),
                             &(meta->regionRects[i])))
      goto fail;
  }

  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId,
                        meta->numRegionRects, meta->regionRects);

  if (status != CHANNEL_RC_OK)
    goto fail;

  status = gdi_interFrameUpdate(gdi, context);

fail:
  return status;
#else
  return ERROR_NOT_SUPPORTED;
#endif
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceCommand_AVC444(rdpGdi* gdi, RdpgfxClientContext* context,
                                      const RDPGFX_SURFACE_COMMAND* cmd)
{
#ifdef WITH_GFX_H264
  INT32 rc = 0;
  UINT status = CHANNEL_RC_OK;
  gdiGfxSurface* surface = NULL;
  RDPGFX_AVC444_BITMAP_STREAM* bs = NULL;
  RDPGFX_AVC420_BITMAP_STREAM* avc1 = NULL;
  RDPGFX_H264_METABLOCK* meta1 = NULL;
  RDPGFX_AVC420_BITMAP_STREAM* avc2 = NULL;
  RDPGFX_H264_METABLOCK* meta2 = NULL;
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(context);
  WINPR_ASSERT(cmd);

  WINPR_ASSERT(context->GetSurfaceData);
  surface =
      (gdiGfxSurface*)context->GetSurfaceData(context, (UINT16)MIN(UINT16_MAX, cmd->surfaceId));

  if (!surface)
  {
    WLog_ERR(TAG, "unable to retrieve surfaceData for surfaceId=%" PRIu32 "", cmd->surfaceId);
    return ERROR_NOT_FOUND;
  }

  if (!surface->h264)
  {
    surface->h264 = h264_context_new(FALSE);

    if (!surface->h264)
    {
      WLog_ERR(TAG, "unable to create h264 context");
      return ERROR_NOT_ENOUGH_MEMORY;
    }

    if (!h264_context_reset(surface->h264, surface->width, surface->height))
      return ERROR_INTERNAL_ERROR;
  }

  if (!surface->h264)
    return ERROR_NOT_SUPPORTED;

  bs = (RDPGFX_AVC444_BITMAP_STREAM*)cmd->extra;

  if (!bs)
    return ERROR_INTERNAL_ERROR;

  avc1 = &bs->bitstream[0];
  avc2 = &bs->bitstream[1];
  meta1 = &avc1->meta;
  meta2 = &avc2->meta;
  rc = avc444_decompress(surface->h264, bs->LC, meta1->regionRects, meta1->numRegionRects,
                         avc1->data, avc1->length, meta2->regionRects, meta2->numRegionRects,
                         avc2->data, avc2->length, surface->data, surface->format,
                         surface->scanline, surface->width, surface->height, cmd->codecId);

  if (rc < 0)
  {
    WLog_WARN(TAG, "avc444_decompress failure: %" PRIu32 ", ignoring update.", status);
    return CHANNEL_RC_OK;
  }

  for (UINT32 i = 0; i < meta1->numRegionRects; i++)
  {
    if (!region16_union_rect(&(surface->invalidRegion), &(surface->invalidRegion),
                             &(meta1->regionRects[i])))
      goto fail;
  }

  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId,
                        meta1->numRegionRects, meta1->regionRects);

  if (status != CHANNEL_RC_OK)
    goto fail;

  for (UINT32 i = 0; i < meta2->numRegionRects; i++)
  {
    if (!region16_union_rect(&(surface->invalidRegion), &(surface->invalidRegion),
                             &(meta2->regionRects[i])))
      goto fail;
  }

  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId,
                        meta2->numRegionRects, meta2->regionRects);

  if (status != CHANNEL_RC_OK)
    goto fail;

  status = gdi_interFrameUpdate(gdi, context);

fail:
  return status;
#else
  return ERROR_NOT_SUPPORTED;
#endif
}

static BOOL gdi_apply_alpha(BYTE* data, UINT32 format, UINT32 stride, RECTANGLE_16* rect,
                            UINT32 startOffsetX, UINT32 count, BYTE a)
{
  UINT32 written = 0;
  BOOL first = TRUE;
  const UINT32 bpp = FreeRDPGetBytesPerPixel(format);
  WINPR_ASSERT(rect);

  for (size_t y = rect->top; y < rect->bottom; y++)
  {
    BYTE* line = &data[y * stride];

    for (size_t x = first ? rect->left + startOffsetX : rect->left; x < rect->right; x++)
    {
      BYTE r = 0;
      BYTE g = 0;
      BYTE b = 0;

      if (written == count)
        return TRUE;

      BYTE* src = &line[x * bpp];
      UINT32 color = FreeRDPReadColor(src, format);
      FreeRDPSplitColor(color, format, &r, &g, &b, NULL, NULL);
      color = FreeRDPGetColor(format, r, g, b, a);
      FreeRDPWriteColor(src, format, color);
      written++;
    }

    first = FALSE;
  }

  return TRUE;
}
/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceCommand_Alpha(rdpGdi* gdi, RdpgfxClientContext* context,
                                     const RDPGFX_SURFACE_COMMAND* cmd)
{
  UINT status = CHANNEL_RC_OK;
  UINT16 alphaSig = 0;
  UINT16 compressed = 0;
  gdiGfxSurface* surface = NULL;
  RECTANGLE_16 invalidRect;
  wStream buffer;
  wStream* s = NULL;
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(context);
  WINPR_ASSERT(cmd);

  s = Stream_StaticConstInit(&buffer, cmd->data, cmd->length);

  if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
    return ERROR_INVALID_DATA;

  WINPR_ASSERT(context->GetSurfaceData);
  surface =
      (gdiGfxSurface*)context->GetSurfaceData(context, (UINT16)MIN(UINT16_MAX, cmd->surfaceId));

  if (!surface)
  {
    WLog_ERR(TAG, "unable to retrieve surfaceData for surfaceId=%" PRIu32 "", cmd->surfaceId);
    return ERROR_NOT_FOUND;
  }

  if (!is_within_surface(surface, cmd))
    return ERROR_INVALID_DATA;

  Stream_Read_UINT16(s, alphaSig);
  Stream_Read_UINT16(s, compressed);

  if (alphaSig != 0x414C)
    return ERROR_INVALID_DATA;

  if (compressed == 0)
  {
    if (!Stream_CheckAndLogRequiredLengthOfSize(TAG, s, cmd->height, cmd->width))
      return ERROR_INVALID_DATA;

    for (size_t y = cmd->top; y < cmd->top + cmd->height; y++)
    {
      BYTE* line = &surface->data[y * surface->scanline];

      for (size_t x = cmd->left; x < cmd->left + cmd->width; x++)
      {
        UINT32 color = 0;
        BYTE r = 0;
        BYTE g = 0;
        BYTE b = 0;
        BYTE a = 0;
        BYTE* src = &line[x * FreeRDPGetBytesPerPixel(surface->format)];
        Stream_Read_UINT8(s, a);
        color = FreeRDPReadColor(src, surface->format);
        FreeRDPSplitColor(color, surface->format, &r, &g, &b, NULL, NULL);
        color = FreeRDPGetColor(surface->format, r, g, b, a);
        FreeRDPWriteColor(src, surface->format, color);
      }
    }
  }
  else
  {
    UINT32 startOffsetX = 0;
    RECTANGLE_16 rect = WINPR_C_ARRAY_INIT;
    rect.left = (UINT16)MIN(UINT16_MAX, cmd->left);
    rect.top = (UINT16)MIN(UINT16_MAX, cmd->top);
    rect.right = (UINT16)MIN(UINT16_MAX, cmd->left + cmd->width);
    rect.bottom = (UINT16)MIN(UINT16_MAX, cmd->top + cmd->height);

    while (rect.top < rect.bottom)
    {
      UINT32 count = 0;
      BYTE a = 0;

      if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
        return ERROR_INVALID_DATA;

      Stream_Read_UINT8(s, a);
      Stream_Read_UINT8(s, count);

      if (count >= 0xFF)
      {
        if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
          return ERROR_INVALID_DATA;

        Stream_Read_UINT16(s, count);

        if (count >= 0xFFFF)
        {
          if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
            return ERROR_INVALID_DATA;

          Stream_Read_UINT32(s, count);
        }
      }

      if (!gdi_apply_alpha(surface->data, surface->format, surface->scanline, &rect,
                           startOffsetX, count, a))
        return ERROR_INTERNAL_ERROR;

      startOffsetX += count;

      while (startOffsetX >= cmd->width)
      {
        startOffsetX -= cmd->width;
        rect.top++;
      }
    }
  }

  invalidRect.left = (UINT16)MIN(UINT16_MAX, cmd->left);
  invalidRect.top = (UINT16)MIN(UINT16_MAX, cmd->top);
  invalidRect.right = (UINT16)MIN(UINT16_MAX, cmd->right);
  invalidRect.bottom = (UINT16)MIN(UINT16_MAX, cmd->bottom);
  if (!region16_union_rect(&(surface->invalidRegion), &(surface->invalidRegion), &invalidRect))
    goto fail;
  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId, 1,
                        &invalidRect);

  if (status != CHANNEL_RC_OK)
    goto fail;

  status = gdi_interFrameUpdate(gdi, context);

fail:
  return status;
}

#if defined(WITH_GFX_FRAME_DUMP)
static void dump_cmd(const RDPGFX_SURFACE_COMMAND* cmd, UINT32 frameId)
{
  static UINT64 xxx = 0;
  const char* path = "/tmp/dump/";
  WINPR_ASSERT(cmd);
  char fname[1024] = WINPR_C_ARRAY_INIT;

  snprintf(fname, sizeof(fname), "%s/%08" PRIx64 ".raw", path, xxx++);
  FILE* fp = fopen(fname, "w");
  if (!fp)
    return;
  (void)fprintf(fp, "frameid: %" PRIu32 "\n", frameId);
  (void)fprintf(fp, "surfaceId: %" PRIu32 "\n", cmd->surfaceId);
  (void)fprintf(fp, "codecId: %" PRIu32 "\n", cmd->codecId);
  (void)fprintf(fp, "contextId: %" PRIu32 "\n", cmd->contextId);
  (void)fprintf(fp, "format: %" PRIu32 "\n", cmd->format);
  (void)fprintf(fp, "left: %" PRIu32 "\n", cmd->left);
  (void)fprintf(fp, "top: %" PRIu32 "\n", cmd->top);
  (void)fprintf(fp, "right: %" PRIu32 "\n", cmd->right);
  (void)fprintf(fp, "bottom: %" PRIu32 "\n", cmd->bottom);
  (void)fprintf(fp, "width: %" PRIu32 "\n", cmd->width);
  (void)fprintf(fp, "height: %" PRIu32 "\n", cmd->height);
  (void)fprintf(fp, "length: %" PRIu32 "\n", cmd->length);

  char* bdata = crypto_base64_encode_ex(cmd->data, cmd->length, FALSE);
  (void)fprintf(fp, "data: %s\n", bdata);
  free(bdata);
  fclose(fp);
}
#endif

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceCommand_Progressive(rdpGdi* gdi, RdpgfxClientContext* context,
                                           const RDPGFX_SURFACE_COMMAND* cmd)
{
  INT32 rc = 0;
  UINT status = ERROR_INTERNAL_ERROR;
  gdiGfxSurface* surface = NULL;
  REGION16 invalidRegion;
  const RECTANGLE_16* rects = NULL;
  UINT32 nrRects = 0;
  /**
   * Note: Since this comes via a Wire-To-Surface-2 PDU the
   * cmd's top/left/right/bottom/width/height members are always zero!
   * The update region is determined during decompression.
   */
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(context);
  WINPR_ASSERT(cmd);
  const UINT16 surfaceId = (UINT16)MIN(UINT16_MAX, cmd->surfaceId);

  WINPR_ASSERT(context->GetSurfaceData);
  surface = (gdiGfxSurface*)context->GetSurfaceData(context, surfaceId);

  if (!surface)
  {
    WLog_ERR(TAG, "unable to retrieve surfaceData for surfaceId=%" PRIu32 "", cmd->surfaceId);
    return ERROR_NOT_FOUND;
  }

  if (!is_within_surface(surface, cmd))
    return ERROR_INVALID_DATA;

  WINPR_ASSERT(surface->codecs);
  rc = progressive_create_surface_context(surface->codecs->progressive, surfaceId, surface->width,
                                          surface->height);

  if (rc < 0)
  {
    WLog_ERR(TAG, "progressive_create_surface_context failure: %" PRId32 "", rc);
    return ERROR_INTERNAL_ERROR;
  }

  region16_init(&invalidRegion);

  rc = progressive_decompress(surface->codecs->progressive, cmd->data, cmd->length, surface->data,
                              surface->format, surface->scanline, cmd->left, cmd->top,
                              &invalidRegion, surfaceId, gdi->frameId);

  if (rc < 0)
  {
    WLog_ERR(TAG, "progressive_decompress failure: %" PRId32 "", rc);
    goto fail;
  }

  rects = region16_rects(&invalidRegion, &nrRects);
  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId,
                        nrRects, rects);

  if (status != CHANNEL_RC_OK)
    goto fail;

  status = ERROR_INTERNAL_ERROR;
  for (UINT32 x = 0; x < nrRects; x++)
  {
    if (!region16_union_rect(&surface->invalidRegion, &surface->invalidRegion, &rects[x]))
      goto fail;
  }

  status = gdi_interFrameUpdate(gdi, context);

fail:

  region16_uninit(&invalidRegion);
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceCommand(RdpgfxClientContext* context, const RDPGFX_SURFACE_COMMAND* cmd)
{
  UINT status = CHANNEL_RC_OK;
  rdpGdi* gdi = NULL;

  if (!context || !cmd)
    return ERROR_INVALID_PARAMETER;

  gdi = (rdpGdi*)context->custom;

  EnterCriticalSection(&context->mux);
  const UINT16 codecId = WINPR_ASSERTING_INT_CAST(UINT16, cmd->codecId);
  WLog_Print(gdi->log, WLOG_TRACE,
             "surfaceId=%" PRIu32 ", codec=%s [%" PRIu32 "], contextId=%" PRIu32 ", format=%s, "
             "left=%" PRIu32 ", top=%" PRIu32 ", right=%" PRIu32 ", bottom=%" PRIu32
             ", width=%" PRIu32 ", height=%" PRIu32 " "
             "length=%" PRIu32 ", data=%p, extra=%p",
             cmd->surfaceId, rdpgfx_get_codec_id_string(codecId), cmd->codecId, cmd->contextId,
             FreeRDPGetColorFormatName(cmd->format), cmd->left, cmd->top, cmd->right, cmd->bottom,
             cmd->width, cmd->height, cmd->length, (void*)cmd->data, (void*)cmd->extra);
#if defined(WITH_GFX_FRAME_DUMP)
  dump_cmd(cmd, gdi->frameId);
#endif

  switch (codecId)
  {
    case RDPGFX_CODECID_UNCOMPRESSED:
      status = gdi_SurfaceCommand_Uncompressed(gdi, context, cmd);
      break;

    case RDPGFX_CODECID_CAVIDEO:
      status = gdi_SurfaceCommand_RemoteFX(gdi, context, cmd);
      break;

    case RDPGFX_CODECID_CLEARCODEC:
      status = gdi_SurfaceCommand_ClearCodec(gdi, context, cmd);
      break;

    case RDPGFX_CODECID_PLANAR:
      status = gdi_SurfaceCommand_Planar(gdi, context, cmd);
      break;

    case RDPGFX_CODECID_AVC420:
      status = gdi_SurfaceCommand_AVC420(gdi, context, cmd);
      break;

    case RDPGFX_CODECID_AVC444v2:
    case RDPGFX_CODECID_AVC444:
      status = gdi_SurfaceCommand_AVC444(gdi, context, cmd);
      break;

    case RDPGFX_CODECID_ALPHA:
      status = gdi_SurfaceCommand_Alpha(gdi, context, cmd);
      break;

    case RDPGFX_CODECID_CAPROGRESSIVE:
      status = gdi_SurfaceCommand_Progressive(gdi, context, cmd);
      break;

    case RDPGFX_CODECID_CAPROGRESSIVE_V2:
      WLog_WARN(TAG, "SurfaceCommand %s [0x%08" PRIX16 "] not implemented",
                rdpgfx_get_codec_id_string(codecId), codecId);
      break;

    default:
      WLog_WARN(TAG, "Invalid SurfaceCommand %s [0x%08" PRIX16 "]",
                rdpgfx_get_codec_id_string(codecId), codecId);
      break;
  }

  LeaveCriticalSection(&context->mux);
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT
gdi_DeleteEncodingContext(RdpgfxClientContext* context,
                          const RDPGFX_DELETE_ENCODING_CONTEXT_PDU* deleteEncodingContext)
{
  WINPR_ASSERT(context);
  WINPR_ASSERT(deleteEncodingContext);
  WINPR_UNUSED(context);
  WINPR_UNUSED(deleteEncodingContext);
  return CHANNEL_RC_OK;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_CreateSurface(RdpgfxClientContext* context,
                              const RDPGFX_CREATE_SURFACE_PDU* createSurface)
{
  UINT rc = ERROR_INTERNAL_ERROR;
  gdiGfxSurface* surface = NULL;
  rdpGdi* gdi = NULL;
  WINPR_ASSERT(context);
  WINPR_ASSERT(createSurface);
  gdi = (rdpGdi*)context->custom;
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(gdi->context);
  EnterCriticalSection(&context->mux);
  surface = (gdiGfxSurface*)calloc(1, sizeof(gdiGfxSurface));

  if (!surface)
    goto fail;

  if (!freerdp_settings_get_bool(gdi->context->settings, FreeRDP_DeactivateClientDecoding))
  {
    WINPR_ASSERT(context->codecs);
    surface->codecs = context->codecs;

    if (!surface->codecs)
    {
      free(surface);
      goto fail;
    }
  }

  surface->surfaceId = createSurface->surfaceId;
  surface->width = gfx_align_scanline(createSurface->width, 16);
  surface->height = gfx_align_scanline(createSurface->height, 16);
  surface->mappedWidth = createSurface->width;
  surface->mappedHeight = createSurface->height;
  surface->outputTargetWidth = createSurface->width;
  surface->outputTargetHeight = createSurface->height;

  switch (createSurface->pixelFormat)
  {
    case GFX_PIXEL_FORMAT_ARGB_8888:
      surface->format = PIXEL_FORMAT_BGRA32;
      break;

    case GFX_PIXEL_FORMAT_XRGB_8888:
      surface->format = PIXEL_FORMAT_BGRX32;
      break;

    default:
      free(surface);
      goto fail;
  }

  surface->scanline = gfx_align_scanline(surface->width * 4UL, 16);
  surface->data = (BYTE*)winpr_aligned_malloc(1ull * surface->scanline * surface->height, 16);

  if (!surface->data)
  {
    free(surface);
    goto fail;
  }

  memset(surface->data, 0xFF, (size_t)surface->scanline * surface->height);
  region16_init(&surface->invalidRegion);

  WINPR_ASSERT(context->SetSurfaceData);
  rc = context->SetSurfaceData(context, surface->surfaceId, (void*)surface);
fail:
  LeaveCriticalSection(&context->mux);
  return rc;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_DeleteSurface(RdpgfxClientContext* context,
                              const RDPGFX_DELETE_SURFACE_PDU* deleteSurface)
{
  UINT rc = CHANNEL_RC_OK;
  UINT res = ERROR_INTERNAL_ERROR;
  rdpCodecs* codecs = NULL;
  gdiGfxSurface* surface = NULL;
  EnterCriticalSection(&context->mux);

  WINPR_ASSERT(context->GetSurfaceData);
  surface = (gdiGfxSurface*)context->GetSurfaceData(context, deleteSurface->surfaceId);

  if (surface)
  {
    if (surface->windowMapped)
      rc = IFCALLRESULT(CHANNEL_RC_OK, context->UnmapWindowForSurface, context,
                        surface->windowId);

#ifdef WITH_GFX_H264
    h264_context_free(surface->h264);
#endif
    region16_uninit(&surface->invalidRegion);
    codecs = surface->codecs;
    winpr_aligned_free(surface->data);
    free(surface);
  }

  WINPR_ASSERT(context->SetSurfaceData);
  res = context->SetSurfaceData(context, deleteSurface->surfaceId, NULL);
  if (res)
    rc = res;

  if (codecs && codecs->progressive)
    progressive_delete_surface_context(codecs->progressive, deleteSurface->surfaceId);

  LeaveCriticalSection(&context->mux);
  return rc;
}

static BOOL intersect_rect(const RECTANGLE_16* rect, const gdiGfxSurface* surface,
                           RECTANGLE_16* prect)
{
  WINPR_ASSERT(rect);
  WINPR_ASSERT(surface);
  WINPR_ASSERT(prect);

  if (rect->left > rect->right)
    return FALSE;
  if (rect->left > surface->width)
    return FALSE;
  if (rect->top > rect->bottom)
    return FALSE;
  if (rect->top > surface->height)
    return FALSE;
  prect->left = rect->left;
  prect->top = rect->top;

  prect->right = MIN(rect->right, WINPR_ASSERTING_INT_CAST(UINT16, surface->width));
  prect->bottom = MIN(rect->bottom, WINPR_ASSERTING_INT_CAST(UINT16, surface->height));
  return TRUE;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SolidFill(RdpgfxClientContext* context, const RDPGFX_SOLID_FILL_PDU* solidFill)
{
  UINT status = ERROR_INTERNAL_ERROR;
  BYTE a = 0xff;
  RECTANGLE_16 invalidRect = WINPR_C_ARRAY_INIT;
  rdpGdi* gdi = (rdpGdi*)context->custom;

  EnterCriticalSection(&context->mux);

  WINPR_ASSERT(context->GetSurfaceData);
  gdiGfxSurface* surface = (gdiGfxSurface*)context->GetSurfaceData(context, solidFill->surfaceId);

  if (!surface)
    goto fail;

  {
    const BYTE b = solidFill->fillPixel.B;
    const BYTE g = solidFill->fillPixel.G;
    const BYTE r = solidFill->fillPixel.R;

    /* [MS-RDPEGFX] 3.3.5.4 Processing an RDPGFX_SOLIDFILL_PDU message
     * https://learn.microsoft.com/en-us/windows/win32/gdi/binary-raster-operations
     *
     * this sounds like the alpha value is always ignored.
     */
    const UINT32 color = FreeRDPGetColor(surface->format, r, g, b, a);
    for (UINT16 index = 0; index < solidFill->fillRectCount; index++)
    {
      const RECTANGLE_16* rect = &(solidFill->fillRects[index]);

      if (!intersect_rect(rect, surface, &invalidRect))
        goto fail;

      const UINT32 nWidth = invalidRect.right - invalidRect.left;
      const UINT32 nHeight = invalidRect.bottom - invalidRect.top;

      if (!freerdp_image_fill(surface->data, surface->format, surface->scanline,
                              invalidRect.left, invalidRect.top, nWidth, nHeight, color))
        goto fail;

      if (!region16_union_rect(&(surface->invalidRegion), &(surface->invalidRegion),
                               &invalidRect))
        goto fail;
    }
  }

  status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context, surface->surfaceId,
                        solidFill->fillRectCount, solidFill->fillRects);

  if (status != CHANNEL_RC_OK)
    goto fail;

  LeaveCriticalSection(&context->mux);

  return gdi_interFrameUpdate(gdi, context);
fail:
  LeaveCriticalSection(&context->mux);
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceToSurface(RdpgfxClientContext* context,
                                 const RDPGFX_SURFACE_TO_SURFACE_PDU* surfaceToSurface)
{
  UINT status = ERROR_INTERNAL_ERROR;
  BOOL sameSurface = 0;
  const RECTANGLE_16* rectSrc = NULL;
  RECTANGLE_16 invalidRect;
  gdiGfxSurface* surfaceSrc = NULL;
  gdiGfxSurface* surfaceDst = NULL;
  rdpGdi* gdi = (rdpGdi*)context->custom;
  EnterCriticalSection(&context->mux);
  rectSrc = &(surfaceToSurface->rectSrc);

  WINPR_ASSERT(context->GetSurfaceData);
  surfaceSrc = (gdiGfxSurface*)context->GetSurfaceData(context, surfaceToSurface->surfaceIdSrc);
  sameSurface =
      (surfaceToSurface->surfaceIdSrc == surfaceToSurface->surfaceIdDest) ? TRUE : FALSE;

  if (!sameSurface)
    surfaceDst =
        (gdiGfxSurface*)context->GetSurfaceData(context, surfaceToSurface->surfaceIdDest);
  else
    surfaceDst = surfaceSrc;

  if (!surfaceSrc || !surfaceDst)
    goto fail;

  if (!is_rect_valid(rectSrc, surfaceSrc->width, surfaceSrc->height))
    goto fail;

  {
    const UINT32 nWidth = rectSrc->right - rectSrc->left;
    const UINT32 nHeight = rectSrc->bottom - rectSrc->top;

    for (UINT16 index = 0; index < surfaceToSurface->destPtsCount; index++)
    {
      const RDPGFX_POINT16* destPt = &surfaceToSurface->destPts[index];
      const RECTANGLE_16 rect = { destPt->x, destPt->y,
                                (UINT16)MIN(UINT16_MAX, destPt->x + nWidth),
                                (UINT16)MIN(UINT16_MAX, destPt->y + nHeight) };
      if (!is_rect_valid(&rect, surfaceDst->width, surfaceDst->height))
        goto fail;

      const UINT32 rwidth = rect.right - rect.left;
      const UINT32 rheight = rect.bottom - rect.top;
      if (!freerdp_image_copy(surfaceDst->data, surfaceDst->format, surfaceDst->scanline,
                              destPt->x, destPt->y, rwidth, rheight, surfaceSrc->data,
                              surfaceSrc->format, surfaceSrc->scanline, rectSrc->left,
                              rectSrc->top, NULL, FREERDP_FLIP_NONE))
        goto fail;

      invalidRect = rect;
      if (!region16_union_rect(&surfaceDst->invalidRegion, &surfaceDst->invalidRegion,
                               &invalidRect))
        goto fail;
      status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context,
                            surfaceDst->surfaceId, 1, &invalidRect);

      if (status != CHANNEL_RC_OK)
        goto fail;
    }
  }

  LeaveCriticalSection(&context->mux);

  return gdi_interFrameUpdate(gdi, context);
fail:
  LeaveCriticalSection(&context->mux);
  return status;
}

static void gdi_GfxCacheEntryFree(gdiGfxCacheEntry* entry)
{
  if (!entry)
    return;
  free(entry->data);
  free(entry);
}

static gdiGfxCacheEntry* gdi_GfxCacheEntryNew(UINT64 cacheKey, UINT32 width, UINT32 height,
                                              UINT32 format)
{
  gdiGfxCacheEntry* cacheEntry = (gdiGfxCacheEntry*)calloc(1, sizeof(gdiGfxCacheEntry));
  if (!cacheEntry)
    goto fail;

  cacheEntry->cacheKey = cacheKey;
  cacheEntry->width = width;
  cacheEntry->height = height;
  cacheEntry->format = format;
  cacheEntry->scanline = gfx_align_scanline(cacheEntry->width * 4, 16);

  if ((cacheEntry->width > 0) && (cacheEntry->height > 0))
  {
    cacheEntry->data = (BYTE*)calloc(cacheEntry->height, cacheEntry->scanline);

    if (!cacheEntry->data)
      goto fail;
  }
  return cacheEntry;
fail:
  gdi_GfxCacheEntryFree(cacheEntry);
  return NULL;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_SurfaceToCache(RdpgfxClientContext* context,
                               const RDPGFX_SURFACE_TO_CACHE_PDU* surfaceToCache)
{
  gdiGfxCacheEntry* cacheEntry = NULL;
  UINT rc = ERROR_INTERNAL_ERROR;
  EnterCriticalSection(&context->mux);
  const RECTANGLE_16* rect = &(surfaceToCache->rectSrc);

  WINPR_ASSERT(context->GetSurfaceData);
  gdiGfxSurface* surface =
      (gdiGfxSurface*)context->GetSurfaceData(context, surfaceToCache->surfaceId);

  if (!surface)
    goto fail;

  if (!is_rect_valid(rect, surface->width, surface->height))
    goto fail;

  cacheEntry = gdi_GfxCacheEntryNew(surfaceToCache->cacheKey, (UINT32)(rect->right - rect->left),
                                    (UINT32)(rect->bottom - rect->top), surface->format);

  if (!cacheEntry)
    goto fail;

  if (!cacheEntry->data)
    goto fail;

  if (!freerdp_image_copy_no_overlap(cacheEntry->data, cacheEntry->format, cacheEntry->scanline,
                                     0, 0, cacheEntry->width, cacheEntry->height, surface->data,
                                     surface->format, surface->scanline, rect->left, rect->top,
                                     NULL, FREERDP_FLIP_NONE))
    goto fail;

  {
    RDPGFX_EVICT_CACHE_ENTRY_PDU evict = { surfaceToCache->cacheSlot };
    WINPR_ASSERT(context->EvictCacheEntry);
    rc = context->EvictCacheEntry(context, &evict);
    if (rc != CHANNEL_RC_OK)
      goto fail;
  }

  WINPR_ASSERT(context->SetCacheSlotData);
  rc = context->SetCacheSlotData(context, surfaceToCache->cacheSlot, (void*)cacheEntry);
fail:
  if (rc != CHANNEL_RC_OK)
    gdi_GfxCacheEntryFree(cacheEntry);
  LeaveCriticalSection(&context->mux);
  return rc;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_CacheToSurface(RdpgfxClientContext* context,
                               const RDPGFX_CACHE_TO_SURFACE_PDU* cacheToSurface)
{
  UINT status = ERROR_INTERNAL_ERROR;
  gdiGfxSurface* surface = NULL;
  gdiGfxCacheEntry* cacheEntry = NULL;
  RECTANGLE_16 invalidRect;
  rdpGdi* gdi = (rdpGdi*)context->custom;

  EnterCriticalSection(&context->mux);

  WINPR_ASSERT(context->GetSurfaceData);
  surface = (gdiGfxSurface*)context->GetSurfaceData(context, cacheToSurface->surfaceId);

  WINPR_ASSERT(context->GetCacheSlotData);
  cacheEntry = (gdiGfxCacheEntry*)context->GetCacheSlotData(context, cacheToSurface->cacheSlot);

  if (!surface || !cacheEntry)
    goto fail;

  for (UINT16 index = 0; index < cacheToSurface->destPtsCount; index++)
  {
    const RDPGFX_POINT16* destPt = &cacheToSurface->destPts[index];
    const RECTANGLE_16 rect = { destPt->x, destPt->y,
                              (UINT16)MIN(UINT16_MAX, destPt->x + cacheEntry->width),
                              (UINT16)MIN(UINT16_MAX, destPt->y + cacheEntry->height) };

    if (rectangle_is_empty(&rect))
      continue;

    if (!is_rect_valid(&rect, surface->width, surface->height))
      goto fail;

    if (!freerdp_image_copy_no_overlap(surface->data, surface->format, surface->scanline,
                                       destPt->x, destPt->y, cacheEntry->width,
                                       cacheEntry->height, cacheEntry->data, cacheEntry->format,
                                       cacheEntry->scanline, 0, 0, NULL, FREERDP_FLIP_NONE))
      goto fail;

    invalidRect = rect;
    if (!region16_union_rect(&surface->invalidRegion, &surface->invalidRegion, &invalidRect))
      goto fail;
    status = IFCALLRESULT(CHANNEL_RC_OK, context->UpdateSurfaceArea, context,
                          surface->surfaceId, 1, &invalidRect);

    if (status != CHANNEL_RC_OK)
      goto fail;
  }

  LeaveCriticalSection(&context->mux);

  return gdi_interFrameUpdate(gdi, context);

fail:
  LeaveCriticalSection(&context->mux);
  return status;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_CacheImportReply(RdpgfxClientContext* context,
                                 const RDPGFX_CACHE_IMPORT_REPLY_PDU* cacheImportReply)
{
  UINT16 count = 0;
  const UINT16* slots = NULL;
  UINT error = CHANNEL_RC_OK;

  slots = cacheImportReply->cacheSlots;
  count = cacheImportReply->importedEntriesCount;

  for (UINT16 index = 0; index < count; index++)
  {
    UINT16 cacheSlot = slots[index];

    if (cacheSlot == 0)
      continue;

    WINPR_ASSERT(context->GetCacheSlotData);
    gdiGfxCacheEntry* cacheEntry =
        (gdiGfxCacheEntry*)context->GetCacheSlotData(context, cacheSlot);

    if (cacheEntry)
      continue;

    cacheEntry = gdi_GfxCacheEntryNew(cacheSlot, 0, 0, PIXEL_FORMAT_BGRX32);

    if (!cacheEntry)
      return ERROR_INTERNAL_ERROR;

    WINPR_ASSERT(context->SetCacheSlotData);
    error = context->SetCacheSlotData(context, cacheSlot, (void*)cacheEntry);

    if (error)
    {
      WLog_ERR(TAG, "CacheImportReply: SetCacheSlotData failed with error %" PRIu32 "",
               error);
      gdi_GfxCacheEntryFree(cacheEntry);
      break;
    }
  }

  return error;
}

static UINT gdi_ImportCacheEntry(RdpgfxClientContext* context, UINT16 cacheSlot,
                                 const PERSISTENT_CACHE_ENTRY* importCacheEntry)
{
  UINT error = ERROR_INTERNAL_ERROR;
  gdiGfxCacheEntry* cacheEntry = NULL;

  if (cacheSlot == 0)
    return CHANNEL_RC_OK;

  cacheEntry = gdi_GfxCacheEntryNew(importCacheEntry->key64, importCacheEntry->width,
                                    importCacheEntry->height, PIXEL_FORMAT_BGRX32);

  if (!cacheEntry)
    goto fail;

  if (!freerdp_image_copy_no_overlap(cacheEntry->data, cacheEntry->format, cacheEntry->scanline,
                                     0, 0, cacheEntry->width, cacheEntry->height,
                                     importCacheEntry->data, PIXEL_FORMAT_BGRX32, 0, 0, 0, NULL,
                                     FREERDP_FLIP_NONE))
    goto fail;

  {
    RDPGFX_EVICT_CACHE_ENTRY_PDU evict = { cacheSlot };
    WINPR_ASSERT(context->EvictCacheEntry);
    error = context->EvictCacheEntry(context, &evict);
  }
  if (error != CHANNEL_RC_OK)
    goto fail;

  WINPR_ASSERT(context->SetCacheSlotData);
  error = context->SetCacheSlotData(context, cacheSlot, (void*)cacheEntry);

fail:
  if (error)
  {
    gdi_GfxCacheEntryFree(cacheEntry);
    WLog_ERR(TAG, "ImportCacheEntry: SetCacheSlotData failed with error %" PRIu32 "", error);
  }

  return error;
}

static UINT gdi_ExportCacheEntry(RdpgfxClientContext* context, UINT16 cacheSlot,
                                 PERSISTENT_CACHE_ENTRY* exportCacheEntry)
{
  gdiGfxCacheEntry* cacheEntry = NULL;

  WINPR_ASSERT(context->GetCacheSlotData);
  cacheEntry = (gdiGfxCacheEntry*)context->GetCacheSlotData(context, cacheSlot);

  if (cacheEntry)
  {
    exportCacheEntry->key64 = cacheEntry->cacheKey;
    exportCacheEntry->width = (UINT16)MIN(UINT16_MAX, cacheEntry->width);
    exportCacheEntry->height = (UINT16)MIN(UINT16_MAX, cacheEntry->height);
    exportCacheEntry->size = cacheEntry->width * cacheEntry->height * 4;
    exportCacheEntry->flags = 0;
    exportCacheEntry->data = cacheEntry->data;
    return CHANNEL_RC_OK;
  }

  return ERROR_NOT_FOUND;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_EvictCacheEntry(RdpgfxClientContext* context,
                                const RDPGFX_EVICT_CACHE_ENTRY_PDU* evictCacheEntry)
{
  gdiGfxCacheEntry* cacheEntry = NULL;
  UINT rc = ERROR_NOT_FOUND;

  WINPR_ASSERT(context);
  WINPR_ASSERT(evictCacheEntry);

  EnterCriticalSection(&context->mux);

  WINPR_ASSERT(context->GetCacheSlotData);
  cacheEntry = (gdiGfxCacheEntry*)context->GetCacheSlotData(context, evictCacheEntry->cacheSlot);

  gdi_GfxCacheEntryFree(cacheEntry);

  WINPR_ASSERT(context->SetCacheSlotData);
  rc = context->SetCacheSlotData(context, evictCacheEntry->cacheSlot, NULL);
  LeaveCriticalSection(&context->mux);
  return rc;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_MapSurfaceToOutput(RdpgfxClientContext* context,
                                   const RDPGFX_MAP_SURFACE_TO_OUTPUT_PDU* surfaceToOutput)
{
  UINT rc = ERROR_INTERNAL_ERROR;
  gdiGfxSurface* surface = NULL;
  EnterCriticalSection(&context->mux);

  WINPR_ASSERT(context->GetSurfaceData);
  surface = (gdiGfxSurface*)context->GetSurfaceData(context, surfaceToOutput->surfaceId);

  if (!surface)
    goto fail;

  if (surface->windowMapped)
  {
    WLog_WARN(TAG, "surface already windowMapped when trying to set outputMapped");
    goto fail;
  }

  surface->outputMapped = TRUE;
  surface->outputOriginX = surfaceToOutput->outputOriginX;
  surface->outputOriginY = surfaceToOutput->outputOriginY;
  surface->outputTargetWidth = surface->mappedWidth;
  surface->outputTargetHeight = surface->mappedHeight;
  region16_clear(&surface->invalidRegion);
  rc = CHANNEL_RC_OK;
fail:
  LeaveCriticalSection(&context->mux);
  return rc;
}

static UINT
gdi_MapSurfaceToScaledOutput(RdpgfxClientContext* context,
                             const RDPGFX_MAP_SURFACE_TO_SCALED_OUTPUT_PDU* surfaceToOutput)
{
  UINT rc = ERROR_INTERNAL_ERROR;
  gdiGfxSurface* surface = NULL;
  EnterCriticalSection(&context->mux);

  WINPR_ASSERT(context->GetSurfaceData);
  surface = (gdiGfxSurface*)context->GetSurfaceData(context, surfaceToOutput->surfaceId);

  if (!surface)
    goto fail;

  if (surface->windowMapped)
  {
    WLog_WARN(TAG, "surface already windowMapped when trying to set outputMapped");
    goto fail;
  }

  surface->outputMapped = TRUE;
  surface->outputOriginX = surfaceToOutput->outputOriginX;
  surface->outputOriginY = surfaceToOutput->outputOriginY;
  surface->outputTargetWidth = surfaceToOutput->targetWidth;
  surface->outputTargetHeight = surfaceToOutput->targetHeight;
  region16_clear(&surface->invalidRegion);
  rc = CHANNEL_RC_OK;
fail:
  LeaveCriticalSection(&context->mux);
  return rc;
}

/**
 * Function description
 *
 * @return 0 on success, otherwise a Win32 error code
 */
static UINT gdi_MapSurfaceToWindow(RdpgfxClientContext* context,
                                   const RDPGFX_MAP_SURFACE_TO_WINDOW_PDU* surfaceToWindow)
{
  UINT rc = ERROR_INTERNAL_ERROR;
  gdiGfxSurface* surface = NULL;
  EnterCriticalSection(&context->mux);

  WINPR_ASSERT(context->GetSurfaceData);
  surface = (gdiGfxSurface*)context->GetSurfaceData(context, surfaceToWindow->surfaceId);

  if (!surface)
    goto fail;

  if (surface->outputMapped)
  {
    WLog_WARN(TAG, "surface already outputMapped when trying to set windowMapped");
    goto fail;
  }

  if (surface->windowMapped)
  {
    if (surface->windowId != surfaceToWindow->windowId)
    {
      WLog_WARN(TAG, "surface windowId mismatch, has %" PRIu64 ", expected %" PRIu64,
                surface->windowId, surfaceToWindow->windowId);
      goto fail;
    }
  }
  surface->windowMapped = TRUE;

  surface->windowId = surfaceToWindow->windowId;
  surface->mappedWidth = surfaceToWindow->mappedWidth;
  surface->mappedHeight = surfaceToWindow->mappedHeight;
  surface->outputTargetWidth = surfaceToWindow->mappedWidth;
  surface->outputTargetHeight = surfaceToWindow->mappedHeight;
  rc = IFCALLRESULT(CHANNEL_RC_OK, context->MapWindowForSurface, context,
                    surfaceToWindow->surfaceId, surfaceToWindow->windowId);
fail:
  LeaveCriticalSection(&context->mux);
  return rc;
}

static UINT
gdi_MapSurfaceToScaledWindow(RdpgfxClientContext* context,
                             const RDPGFX_MAP_SURFACE_TO_SCALED_WINDOW_PDU* surfaceToWindow)
{
  UINT rc = ERROR_INTERNAL_ERROR;
  gdiGfxSurface* surface = NULL;
  EnterCriticalSection(&context->mux);

  WINPR_ASSERT(context->GetSurfaceData);
  surface = (gdiGfxSurface*)context->GetSurfaceData(context, surfaceToWindow->surfaceId);

  if (!surface)
    goto fail;

  if (surface->outputMapped)
  {
    WLog_WARN(TAG, "surface already outputMapped when trying to set windowMapped");
    goto fail;
  }

  if (surface->windowMapped)
  {
    if (surface->windowId != surfaceToWindow->windowId)
    {
      WLog_WARN(TAG, "surface windowId mismatch, has %" PRIu64 ", expected %" PRIu64,
                surface->windowId, surfaceToWindow->windowId);
      goto fail;
    }
  }
  surface->windowMapped = TRUE;

  surface->windowId = surfaceToWindow->windowId;
  surface->mappedWidth = surfaceToWindow->mappedWidth;
  surface->mappedHeight = surfaceToWindow->mappedHeight;
  surface->outputTargetWidth = surfaceToWindow->targetWidth;
  surface->outputTargetHeight = surfaceToWindow->targetHeight;
  rc = IFCALLRESULT(CHANNEL_RC_OK, context->MapWindowForSurface, context,
                    surfaceToWindow->surfaceId, surfaceToWindow->windowId);
fail:
  LeaveCriticalSection(&context->mux);
  return rc;
}

BOOL gdi_graphics_pipeline_init(rdpGdi* gdi, RdpgfxClientContext* gfx)
{
  return gdi_graphics_pipeline_init_ex(gdi, gfx, NULL, NULL, NULL);
}

BOOL gdi_graphics_pipeline_init_ex(rdpGdi* gdi, RdpgfxClientContext* gfx,
                                   pcRdpgfxMapWindowForSurface map,
                                   pcRdpgfxUnmapWindowForSurface unmap,
                                   pcRdpgfxUpdateSurfaceArea update)
{
  if (!gdi || !gfx || !gdi->context || !gdi->context->settings)
    return FALSE;

  rdpContext* context = gdi->context;
  rdpSettings* settings = context->settings;

  gdi->gfx = gfx;
  gfx->custom = (void*)gdi;
  gfx->ResetGraphics = gdi_ResetGraphics;
  gfx->StartFrame = gdi_StartFrame;
  gfx->EndFrame = gdi_EndFrame;
  gfx->SurfaceCommand = gdi_SurfaceCommand;
  gfx->DeleteEncodingContext = gdi_DeleteEncodingContext;
  gfx->CreateSurface = gdi_CreateSurface;
  gfx->DeleteSurface = gdi_DeleteSurface;
  gfx->SolidFill = gdi_SolidFill;
  gfx->SurfaceToSurface = gdi_SurfaceToSurface;
  gfx->SurfaceToCache = gdi_SurfaceToCache;
  gfx->CacheToSurface = gdi_CacheToSurface;
  gfx->CacheImportReply = gdi_CacheImportReply;
  gfx->ImportCacheEntry = gdi_ImportCacheEntry;
  gfx->ExportCacheEntry = gdi_ExportCacheEntry;
  gfx->EvictCacheEntry = gdi_EvictCacheEntry;
  gfx->MapSurfaceToOutput = gdi_MapSurfaceToOutput;
  gfx->MapSurfaceToWindow = gdi_MapSurfaceToWindow;
  gfx->MapSurfaceToScaledOutput = gdi_MapSurfaceToScaledOutput;
  gfx->MapSurfaceToScaledWindow = gdi_MapSurfaceToScaledWindow;
  gfx->UpdateSurfaces = gdi_UpdateSurfaces;
  gfx->MapWindowForSurface = map;
  gfx->UnmapWindowForSurface = unmap;
  gfx->UpdateSurfaceArea = update;

  if (!freerdp_settings_get_bool(settings, FreeRDP_DeactivateClientDecoding))
  {
    const UINT32 w = freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth);
    const UINT32 h = freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight);
    const UINT32 flags = freerdp_settings_get_uint32(settings, FreeRDP_ThreadingFlags);

    gfx->codecs = freerdp_client_codecs_new(flags);
    if (!gfx->codecs)
      return FALSE;
    if (!freerdp_client_codecs_prepare(gfx->codecs, FREERDP_CODEC_ALL, w, h))
      return FALSE;
  }
  InitializeCriticalSection(&gfx->mux);
  PROFILER_CREATE(gfx->SurfaceProfiler, "GFX-PROFILER")

  /**
   * gdi->graphicsReset will be removed in FreeRDP v3 from public headers,
   * since the EGFX Reset Graphics PDU seems to be optional.
   * There are still some clients that expect and check it and therefore
   * we simply initialize it with TRUE here for now.
   */
  gdi->graphicsReset = TRUE;
  if (freerdp_settings_get_bool(settings, FreeRDP_DeactivateClientDecoding))
  {
    gfx->UpdateSurfaceArea = NULL;
    gfx->UpdateSurfaces = NULL;
    gfx->SurfaceCommand = NULL;
  }

  return TRUE;
}

void gdi_graphics_pipeline_uninit(rdpGdi* gdi, RdpgfxClientContext* gfx)
{
  if (gdi)
    gdi->gfx = NULL;

  if (!gfx)
    return;

  gfx->custom = NULL;
  freerdp_client_codecs_free(gfx->codecs);
  gfx->codecs = NULL;
  DeleteCriticalSection(&gfx->mux);
  PROFILER_PRINT_HEADER
  PROFILER_PRINT(gfx->SurfaceProfiler)
  PROFILER_PRINT_FOOTER
  PROFILER_FREE(gfx->SurfaceProfiler)
}

const char* rdpgfx_caps_version_str(UINT32 capsVersion)
{
  switch (capsVersion)
  {
    case RDPGFX_CAPVERSION_8:
      return "RDPGFX_CAPVERSION_8";
    case RDPGFX_CAPVERSION_81:
      return "RDPGFX_CAPVERSION_81";
    case RDPGFX_CAPVERSION_10:
      return "RDPGFX_CAPVERSION_10";
    case RDPGFX_CAPVERSION_101:
      return "RDPGFX_CAPVERSION_101";
    case RDPGFX_CAPVERSION_102:
      return "RDPGFX_CAPVERSION_102";
    case RDPGFX_CAPVERSION_103:
      return "RDPGFX_CAPVERSION_103";
    case RDPGFX_CAPVERSION_104:
      return "RDPGFX_CAPVERSION_104";
    case RDPGFX_CAPVERSION_105:
      return "RDPGFX_CAPVERSION_105";
    case RDPGFX_CAPVERSION_106:
      return "RDPGFX_CAPVERSION_106";
    case RDPGFX_CAPVERSION_106_ERR:
      return "RDPGFX_CAPVERSION_106_ERR";
    case RDPGFX_CAPVERSION_107:
      return "RDPGFX_CAPVERSION_107";
    default:
      return "RDPGFX_CAPVERSION_UNKNOWN";
  }
}

Coverage Report

Created: 2026-02-26 06:54