FreeRDP/libfreerdp/gdi/video.c
2019-04-05 09:13:24 +02:00

166 lines
4.5 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Video Optimized Remoting Virtual Channel Extension for X11
*
* Copyright 2017 David Fort <contact@hardening-consulting.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.
*/
#include <freerdp/client/geometry.h>
#include <freerdp/client/video.h>
#include <freerdp/gdi/gdi.h>
#include <freerdp/gdi/video.h>
#include <freerdp/gdi/region.h>
#define TAG FREERDP_TAG("video")
typedef struct
{
VideoSurface base;
UINT32 scanline;
BYTE* image;
} gdiVideoSurface;
void gdi_video_geometry_init(rdpGdi* gdi, GeometryClientContext* geom)
{
gdi->geometry = geom;
if (gdi->video)
{
VideoClientContext* video = gdi->video;
video->setGeometry(video, gdi->geometry);
}
}
void gdi_video_geometry_uninit(rdpGdi* gdi, GeometryClientContext* geom)
{
}
static VideoSurface* gdiVideoCreateSurface(VideoClientContext* video, BYTE* data, UINT32 x,
UINT32 y,
UINT32 width, UINT32 height)
{
rdpGdi* gdi = (rdpGdi*)video->custom;
gdiVideoSurface* ret = calloc(1, sizeof(*ret));
UINT32 bpp;
if (!ret)
return NULL;
bpp = GetBytesPerPixel(gdi->dstFormat);
ret->base.data = data;
ret->base.x = x;
ret->base.y = y;
ret->base.w = width;
ret->base.h = height;
ret->scanline = width * bpp;
ret->image = _aligned_malloc(ret->scanline * height, 16);
if (!ret->image)
{
WLog_ERR(TAG, "unable to create surface image");
free(ret);
return NULL;
}
return &ret->base;
}
static BOOL gdiVideoShowSurface(VideoClientContext* video, VideoSurface* surface)
{
rdpGdi* gdi = (rdpGdi*)video->custom;
gdiVideoSurface* gdiSurface = (gdiVideoSurface*)surface;
RECTANGLE_16 surfaceRect;
rdpUpdate* update = gdi->context->update;
surfaceRect.left = surface->x;
surfaceRect.top = surface->y;
surfaceRect.right = surface->x + surface->w;
surfaceRect.bottom = surface->y + surface->h;
update->BeginPaint(gdi->context);
if ((gdi->width < 0) || (gdi->height < 0))
return FALSE;
else
{
const UINT32 nXSrc = surface->x;
const UINT32 nYSrc = surface->y;
const UINT32 nXDst = nXSrc;
const UINT32 nYDst = nYSrc;
const UINT32 width = (surface->w + surface->x < (UINT32)gdi->width) ? surface->w : (UINT32)gdi->width - surface->x;
const UINT32 height = (surface->h + surface->y < (UINT32)gdi->height) ? surface->h : (UINT32)gdi->height -
surface->y;
if (!freerdp_image_copy(gdi->primary_buffer, gdi->primary->hdc->format,
gdi->stride,
nXDst, nYDst, width, height,
surface->data, gdi->primary->hdc->format,
gdiSurface->scanline, 0, 0, NULL, FREERDP_FLIP_NONE))
return FALSE;
if ((nXDst > INT32_MAX) || (nYDst > INT32_MAX) || (width > INT32_MAX) || (height > INT32_MAX))
return FALSE;
gdi_InvalidateRegion(gdi->primary->hdc, (INT32)nXDst, (INT32)nYDst, (INT32)width, (INT32)height);
}
update->EndPaint(gdi->context);
return TRUE;
}
static BOOL gdiVideoDeleteSurface(VideoClientContext* video, VideoSurface* surface)
{
gdiVideoSurface* gdiSurface = (gdiVideoSurface*)surface;
if (gdiSurface)
_aligned_free(gdiSurface->image);
free(gdiSurface);
return TRUE;
}
void gdi_video_control_init(rdpGdi* gdi, VideoClientContext* video)
{
gdi->video = video;
video->custom = gdi;
video->createSurface = gdiVideoCreateSurface;
video->showSurface = gdiVideoShowSurface;
video->deleteSurface = gdiVideoDeleteSurface;
video->setGeometry(video, gdi->geometry);
}
void gdi_video_control_uninit(rdpGdi* gdi, VideoClientContext* video)
{
gdi->video = NULL;
}
static void gdi_video_timer(void* context, TimerEventArgs* timer)
{
rdpContext* ctx = (rdpContext*)context;
rdpGdi* gdi = ctx->gdi;
if (gdi && gdi->video)
gdi->video->timer(gdi->video, timer->now);
}
void gdi_video_data_init(rdpGdi* gdi, VideoClientContext* video)
{
PubSub_SubscribeTimer(gdi->context->pubSub, gdi_video_timer);
}
void gdi_video_data_uninit(rdpGdi* gdi, VideoClientContext* context)
{
PubSub_UnsubscribeTimer(gdi->context->pubSub, gdi_video_timer);
}