video.c

 
#include "../core/update.h"
 
#include <winpr/assert.h>
 
#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>
 
void gdi_video_geometry_init(rdpGdi* gdi, GeometryClientContext* geom)
{
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(geom);
 
  gdi->geometry = geom;
 
  if (gdi->video)
  {
    VideoClientContext* video = gdi->video;
 
    WINPR_ASSERT(video);
    WINPR_ASSERT(video->setGeometry);
    video->setGeometry(video, gdi->geometry);
  }
}
 
void gdi_video_geometry_uninit(rdpGdi* gdi, GeometryClientContext* geom)
{
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(geom);
  WINPR_UNUSED(gdi);
  WINPR_UNUSED(geom);
}
 
static VideoSurface* gdiVideoCreateSurface(WINPR_ATTR_UNUSED VideoClientContext* video, UINT32 x,
                                           UINT32 y, UINT32 width, UINT32 height)
{
  return VideoClient_CreateCommonContext(sizeof(VideoSurface), x, y, width, height);
}
 
static BOOL gdiVideoShowSurface(VideoClientContext* video, const VideoSurface* surface,
                                UINT32 destinationWidth, UINT32 destinationHeight)
{
  BOOL rc = FALSE;
  rdpGdi* gdi = NULL;
  rdpUpdate* update = NULL;
 
  WINPR_ASSERT(video);
  WINPR_ASSERT(surface);
 
  gdi = (rdpGdi*)video->custom;
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(gdi->context);
 
  update = gdi->context->update;
  WINPR_ASSERT(update);
 
  if (!update_begin_paint(update))
    goto fail;
 
  if ((gdi->width < 0) || (gdi->height < 0))
    goto fail;
  else
  {
    const UINT32 nXSrc = surface->x;
    const UINT32 nYSrc = surface->y;
    const UINT32 nXDst = nXSrc;
    const UINT32 nYDst = nYSrc;
    const UINT32 width = (destinationWidth + surface->x < (UINT32)gdi->width)
                             ? destinationWidth
                             : (UINT32)gdi->width - surface->x;
    const UINT32 height = (destinationHeight + surface->y < (UINT32)gdi->height)
                              ? destinationHeight
                              : (UINT32)gdi->height - surface->y;
 
    WINPR_ASSERT(gdi->primary_buffer);
    WINPR_ASSERT(gdi->primary);
    WINPR_ASSERT(gdi->primary->hdc);
 
    if (!freerdp_image_scale(gdi->primary_buffer, gdi->primary->hdc->format, gdi->stride, nXDst,
                             nYDst, width, height, surface->data, surface->format,
                             surface->scanline, 0, 0, surface->w, surface->h))
      goto fail;
 
    if ((nXDst > INT32_MAX) || (nYDst > INT32_MAX) || (width > INT32_MAX) ||
        (height > INT32_MAX))
      goto fail;
 
    gdi_InvalidateRegion(gdi->primary->hdc, (INT32)nXDst, (INT32)nYDst, (INT32)width,
                         (INT32)height);
  }
 
  rc = TRUE;
fail:
 
  if (!update_end_paint(update))
    return FALSE;
 
  return rc;
}
 
static BOOL gdiVideoDeleteSurface(VideoClientContext* video, VideoSurface* surface)
{
  WINPR_UNUSED(video);
  VideoClient_DestroyCommonContext(surface);
  return TRUE;
}
 
void gdi_video_control_init(rdpGdi* gdi, VideoClientContext* video)
{
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(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, WINPR_ATTR_UNUSED VideoClientContext* video)
{
  WINPR_ASSERT(gdi);
  gdi->video = NULL;
}
 
static void gdi_video_timer(void* context, const TimerEventArgs* timer)
{
  rdpContext* ctx = (rdpContext*)context;
  rdpGdi* gdi = NULL;
 
  WINPR_ASSERT(ctx);
  WINPR_ASSERT(timer);
 
  gdi = ctx->gdi;
 
  if (gdi && gdi->video)
    gdi->video->timer(gdi->video, timer->now);
}
 
void gdi_video_data_init(rdpGdi* gdi, WINPR_ATTR_UNUSED VideoClientContext* video)
{
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(gdi->context);
  PubSub_SubscribeTimer(gdi->context->pubSub, gdi_video_timer);
}
 
void gdi_video_data_uninit(rdpGdi* gdi, WINPR_ATTR_UNUSED VideoClientContext* context)
{
  WINPR_ASSERT(gdi);
  WINPR_ASSERT(gdi->context);
  PubSub_UnsubscribeTimer(gdi->context->pubSub, gdi_video_timer);
}
 
VideoSurface* VideoClient_CreateCommonContext(size_t size, UINT32 x, UINT32 y, UINT32 w, UINT32 h)
{
  VideoSurface* ret = NULL;
 
  WINPR_ASSERT(size >= sizeof(VideoSurface));
 
  ret = calloc(1, size);
  if (!ret)
    return NULL;
 
  ret->format = PIXEL_FORMAT_BGRX32;
  ret->x = x;
  ret->y = y;
  ret->w = w;
  ret->h = h;
  ret->alignedWidth = ret->w + 32 - ret->w % 16;
  ret->alignedHeight = ret->h + 32 - ret->h % 16;
 
  ret->scanline = ret->alignedWidth * FreeRDPGetBytesPerPixel(ret->format);
  ret->data = winpr_aligned_malloc(1ull * ret->scanline * ret->alignedHeight, 64);
  if (!ret->data)
    goto fail;
  return ret;
fail:
  VideoClient_DestroyCommonContext(ret);
  return NULL;
}
 
void VideoClient_DestroyCommonContext(VideoSurface* surface)
{
  if (!surface)
    return;
  winpr_aligned_free(surface->data);
  free(surface);
}