- improve v4l2 grabber for frame rate control

- improve rate control of mpeg4/h263 encoder

src/msv4l2.c

@@ -52,14 +52,13 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #endif
 
+
 typedef struct V4l2State{
 	int fd;
-#ifdef V4L2_THREADED
 	ms_thread_t thread;
 	bool_t thread_run;
 	queue_t rq;
 	ms_mutex_t mutex;
-#endif
 	char *dev;
 	char *mmapdbuf;
 	int msize;/*mmapped size*/
@@ -72,8 +71,10 @@ typedef struct V4l2State{
 	int frame_ind;
 	int frame_max;
 	float fps;
-	float start_time;
-	int frame_count;
+	unsigned int start_time;
+	unsigned int last_frame_time;
+	float mean_inter_frame;
+	int th_frame_count;
 	int queued;
 	bool_t configured;
 }V4l2State;
@@ -276,7 +277,7 @@ static int msv4l2_do_mmap(V4l2State *s){
 	return 0;
 }
 
-static mblk_t * v4lv2_grab_image(V4l2State *s){
+static mblk_t * v4lv2_grab_image(V4l2State *s, int poll_timeout_ms){
 	struct v4l2_buffer buf;
 	unsigned int k;
 	memset(&buf,0,sizeof(buf));
@@ -307,7 +308,7 @@ static mblk_t * v4lv2_grab_image(V4l2State *s){
 		fds.events=POLLIN;
 		fds.fd=s->fd;
 		/*check with poll if there is something to read */
-		if (poll(&fds,1,0)==1 && fds.revents==POLLIN){
+		if (poll(&fds,1,poll_timeout_ms)==1 && fds.revents==POLLIN){
 			if (v4l2_ioctl(s->fd, VIDIOC_DQBUF, &buf)<0) {
 				switch (errno) {
 				case EAGAIN:
@@ -372,25 +373,19 @@ static void msv4l2_init(MSFilter *f){
 	s->fps=15;
 	s->configured=FALSE;
 	f->data=s;
-#ifdef V4L2_THREADED
-	s->thread_run = TRUE;
 	qinit(&s->rq);
-#endif
 }
 
 static void msv4l2_uninit(MSFilter *f){
 	V4l2State *s=(V4l2State*)f->data;
 	ms_free(s->dev);
-#ifdef V4L2_THREADED
+	flushq(&s->rq,0);
 	ms_mutex_destroy(&s->mutex);	
-#endif
 	ms_free(s);
 }
 
-#ifdef V4L2_THREADED
 static void *msv4l2_thread(void *ptr){
 	V4l2State *s=(V4l2State*)ptr;
-	int err=-1;
 	ms_message("msv4l2_thread starting");
 	if (s->fd!=-1)
 	{
@@ -413,10 +408,9 @@ static void *msv4l2_thread(void *ptr){
 	ms_message("V4L2 video capture started.");
 	while(s->thread_run)
 	{
-		mblk_t *m;
 		if (s->fd!=-1){
 			mblk_t *m;
-			m=v4lv2_grab_image(s);
+			m=v4lv2_grab_image(s,50);
 			if (m){
 				mblk_t *om=dupb(m);
 				mblk_set_marker_info(om,(s->pix_fmt==MS_MJPEG));
@@ -425,9 +419,7 @@ static void *msv4l2_thread(void *ptr){
 				ms_mutex_unlock(&s->mutex);
 			}
 		}
-	}	
-	ms_message("thread:%d",s->thread_run);
-munmap:	
+	}
 	msv4l2_do_munmap(s);
 close:
 	msv4l2_close(s);
@@ -436,45 +428,39 @@ exit:
 	s->fd = -1;
 	ms_thread_exit(NULL);
 }
-#endif
 
 static void msv4l2_preprocess(MSFilter *f){
 	V4l2State *s=(V4l2State*)f->data;
-#ifdef V4L2_THREADED
+	s->thread_run=TRUE;
 	ms_thread_create(&s->thread,NULL,msv4l2_thread,s);
-#else
-	if (s->fd==-1 && msv4l2_open(s)!=0) {
-		return;
-	}
-	if (!s->configured && msv4l2_configure(s)!=0){
-		return;
-	}
-	if (msv4l2_do_mmap(s)==0){
-		ms_message("V4L2 video capture started.");
-	}else{
-		msv4l2_close(s);
-	}
-	s->start_time=f->ticker->time;
-#endif
+	s->th_frame_count=-1;
+	s->mean_inter_frame=0;
 }
 
 static void msv4l2_process(MSFilter *f){
 	V4l2State *s=(V4l2State*)f->data;
-#ifdef V4L2_THREADED
 	uint32_t timestamp;
 	int cur_frame;
-	if (s->frame_count==-1){
-		s->start_time=f->ticker->time;
-		s->frame_count=0;
+	uint32_t curtime=f->ticker->time;
+	float elapsed;
+	
+	if (s->th_frame_count==-1){
+		s->start_time=curtime;
+		s->th_frame_count=0;
 	}
-	cur_frame=((f->ticker->time-s->start_time)*s->fps/1000.0);
+	elapsed=((float)(curtime-s->start_time))/1000.0;
+	cur_frame=elapsed*s->fps;
 	
-	if (cur_frame>=s->frame_count){
+	if (cur_frame>=s->th_frame_count){
 		mblk_t *om=NULL;
 		ms_mutex_lock(&s->mutex);
 		/*keep the most recent frame if several frames have been captured */
 		if (s->fd!=-1){
-			om=getq(&s->rq);
+			mblk_t *tmp=NULL;
+			while((tmp=getq(&s->rq))!=NULL){
+				if (om!=NULL) freemsg(om);
+				om=tmp;
+			}
 		}
 		ms_mutex_unlock(&s->mutex);
 		if (om!=NULL){
@@ -482,47 +468,32 @@ static void msv4l2_process(MSFilter *f){
 			mblk_set_timestamp_info(om,timestamp);
 			mblk_set_marker_info(om,TRUE);
 			ms_queue_put(f->outputs[0],om);
-			/*ms_message("picture sent");*/
-			s->frame_count++;
-		}
-	}else{
-			flushq(&s->rq,0);
-	}
-#else
-	uint32_t elapsed;
-	
-	if (s->fd!=-1){
-		/*see it is necessary to output a frame:*/
-		elapsed=f->ticker->time-s->start_time;
-		if (((float)elapsed*s->fps/1000.0)>s->frame_count){
-			mblk_t *m;
-			m=v4lv2_grab_image(s);
-			if (m){
-				mblk_t *om=dupb(m);
-				mblk_set_marker_info(om,(s->pix_fmt==MS_MJPEG));
-				ms_queue_put(f->outputs[0],om);
-				s->frame_count++;
+			if (s->last_frame_time!=-1){
+				float frame_interval=(float)(curtime-s->last_frame_time)/1000.0;
+				if (s->mean_inter_frame==0){
+					s->mean_inter_frame=frame_interval;
+				}else{
+					s->mean_inter_frame=(0.8*s->mean_inter_frame)+(0.2*frame_interval);
+				}
 			}
+			s->last_frame_time=curtime;
+		}
+		s->th_frame_count++;
+		if (s->th_frame_count%50==0 && s->mean_inter_frame!=0){
+			ms_message("Captured mean fps=%f, expected=%f",1/s->mean_inter_frame, s->fps);
 		}
 	}
-#endif
 }
 
 static void msv4l2_postprocess(MSFilter *f){
 	V4l2State *s=(V4l2State*)f->data;
-#ifdef V4L2_THREADED
+
 	s->thread_run = FALSE;
 	if(ms_thread_join(s->thread,NULL))
 		ms_warning("msv4l2 thread was already stopped");
 	else
 		ms_message("msv4l2 thread has joined.");
 	flushq(&s->rq,0);
-#else
-	if (s->fd!=-1){
-		msv4l2_do_munmap(s);
-		msv4l2_close(s);
-	}
-#endif
 }
 
 static int msv4l2_set_fps(MSFilter *f, void *arg){
@@ -549,9 +520,7 @@ static int msv4l2_get_pixfmt(MSFilter *f, void *arg){
 		if (msv4l2_open(s)==0){
 			msv4l2_configure(s);
 			*(MSPixFmt*)arg=s->pix_fmt;
-#ifdef V4L2_THREADED
 			msv4l2_close(s);
-#endif
 			return 0;
 		}else return -1;
 	}

src/videoenc.c

@@ -35,6 +35,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include "rfc2429.h"
 
+#define RATE_CONTROL_MARGIN 15000 /*bits/second*/
+
 static bool_t avcodec_initialized=FALSE;
 
 #ifdef ENABLE_LOG_FFMPEG
@@ -213,13 +215,19 @@ static void prepare(EncState *s){
 	}
 
 	/* put codec parameters */
-	c->bit_rate=(float)s->maxbr*0.7;
-	c->bit_rate_tolerance=s->fps!=1?(float)c->bit_rate/(s->fps-1):c->bit_rate;
+	/* in order to take in account RTP protocol overhead and avoid possible
+	 bitrate peaks especially on low bandwidth, we make a correction on the 
+	 codec's target bitrate.
+	*/
+	c->bit_rate=(float)s->maxbr*0.92;
+	if (c->bit_rate>RATE_CONTROL_MARGIN){
+		 c->bit_rate -= RATE_CONTROL_MARGIN;
+	}
+	c->bit_rate_tolerance=s->fps>1?(float)c->bit_rate/(s->fps-1):c->bit_rate;
 
 	if (s->codec!=CODEC_ID_SNOW && s->maxbr<256000){
 		/*snow does not like 1st pass rate control*/
-		/*and rate control eats too much cpu with CIF high fps pictures*/
-		c->rc_max_rate=(float)s->maxbr*0.8;
+		c->rc_max_rate=c->bit_rate;
 		c->rc_min_rate=0;
 		c->rc_buffer_size=c->rc_max_rate;
 	}else{
@@ -232,7 +240,7 @@ static void prepare(EncState *s){
 	c->height = s->vsize.height;
 	c->time_base.num = 1;
 	c->time_base.den = (int)s->fps;
-	c->gop_size=(int)s->fps*5; /*emit I frame every 5 seconds*/
+	c->gop_size=(int)s->fps*10; /*emit I frame every 10 seconds*/
 	c->pix_fmt=PIX_FMT_YUV420P;
 	s->comp_buf=allocb(c->bit_rate*2,0);
 	if (s->codec==CODEC_ID_SNOW){
@@ -279,15 +287,6 @@ static void enc_uninit(MSFilter  *f){
 	EncState *s=(EncState*)f->data;
 	ms_free(s);
 }
-#if 0
-static void enc_set_rc(EncState *s, AVCodecContext *c){
-	int factor=c->width/MS_VIDEO_SIZE_QCIF_W;
-	c->rc_min_rate=0;
-	c->bit_rate=400; /* this value makes around 100kbit/s at QCIF=2 */
-	c->rc_max_rate=c->bit_rate+1;
-	c->rc_buffer_size=20000*factor;	/* food recipe */
-}
-#endif
 
 static void enc_preprocess(MSFilter *f){
 	EncState *s=(EncState*)f->data;
@@ -795,19 +794,19 @@ static int enc_set_br(MSFilter *f, void *arg){
 	if (s->maxbr>=1024000 && s->codec!=CODEC_ID_H263P){
 		s->vsize.width = MS_VIDEO_SIZE_SVGA_W;
 		s->vsize.height = MS_VIDEO_SIZE_SVGA_H;
-		s->fps=17;
+		s->fps=25;
 	}else if (s->maxbr>=800000 && s->codec!=CODEC_ID_H263P){
 		s->vsize.width = MS_VIDEO_SIZE_VGA_W;
 		s->vsize.height = MS_VIDEO_SIZE_VGA_H;
-		s->fps=17;
+		s->fps=25;
 	}else if (s->maxbr>=512000){
 		s->vsize.width=MS_VIDEO_SIZE_CIF_W;
 		s->vsize.height=MS_VIDEO_SIZE_CIF_H;
-		s->fps=17;
+		s->fps=25;
 	}else if (s->maxbr>=256000){
 		s->vsize.width=MS_VIDEO_SIZE_CIF_W;
 		s->vsize.height=MS_VIDEO_SIZE_CIF_H;
-		s->fps=10;
+		s->fps=15;
 		s->qmin=3;
 	}else if (s->maxbr>=128000){
 		s->vsize.width=MS_VIDEO_SIZE_QCIF_W;

src/videoout.c

@@ -563,11 +563,13 @@ static int sdl_create_window(SdlDisplay *wd, int w, int h){
 	if (info->blit_hw_A)
 		ms_message("Alpha blits between sw to hw surfaces: accelerated");
 
-	wd->sdl_screen = SDL_SetVideoMode(wd->screen_size.width,wd->screen_size.height, 0,flags);
+	wd->sdl_screen = SDL_SetVideoMode(w,h, 0,flags);
 	if (wd->sdl_screen == NULL ) {
 		ms_warning("no hardware for video mode: %s\n",
 				   SDL_GetError());
 	}
+	wd->screen_size.width = w;
+	wd->screen_size.height = h;
 	if (wd->sdl_screen->flags & SDL_HWSURFACE) ms_message("SDL surface created in hardware");
 	if (once) {
 		SDL_WM_SetCaption("Video window", NULL);
@@ -608,12 +610,9 @@ static bool_t sdl_display_init(MSDisplay *obj, MSFilter *f, MSPicture *fbuf, MSP
 		}
 		ms_mutex_init(&wd->sdl_mutex,NULL);
 		ms_mutex_lock(&wd->sdl_mutex);
-		wd->screen_size.width = fbuf->w;
-		wd->screen_size.height = fbuf->h;
 		
 	}else {
 		ms_mutex_lock(&wd->sdl_mutex);
-
 		if (wd->lay!=NULL)
 			SDL_FreeYUVOverlay(wd->lay);
 		if (wd->sdl_screen!=NULL)
@@ -755,551 +754,6 @@ MSDisplayDesc ms_sdl_display_desc={
 	.pollevent=sdl_poll_event,
 };
 
-#elif defined(WIN32)
-
-#include <Vfw.h>
-
-typedef struct _WinDisplay{
-	MSFilter *filter;
-	HWND window;
-	HDRAWDIB ddh;
-	MSPicture fb;
-	MSPicture fb_selfview;
-	uint8_t *rgb_selfview;
-	int rgb_len_selfview;
-	struct ms_SwsContext *sws_selfview;
-	MSDisplayEvent last_rsz;
-	uint8_t *rgb;
-	int last_rect_w;
-	int last_rect_h;
-	int rgb_len;
-	struct ms_SwsContext *sws;
-	bool_t new_ev;
-}WinDisplay;
-
-static LRESULT CALLBACK window_proc(
-    HWND hwnd,        // handle to window
-    UINT uMsg,        // message identifier
-    WPARAM wParam,    // first message parameter
-    LPARAM lParam)    // second message parameter
-{
-	switch(uMsg){
-		case WM_DESTROY:
-		break;
-		case WM_SIZE:
-			if (wParam==SIZE_RESTORED){
-				int h=(lParam>>16) & 0xffff;
-				int w=lParam & 0xffff;
-				MSDisplay *obj;
-				WinDisplay *wd;
-				ms_message("Resized to %i,%i",w,h);
-				obj=(MSDisplay*)GetWindowLongPtr(hwnd,GWLP_USERDATA);
-				if (obj!=NULL){
-					wd=(WinDisplay*)obj->data;
-					wd->last_rsz.evtype=MS_DISPLAY_RESIZE_EVENT;
-					wd->last_rsz.w=w;
-					wd->last_rsz.h=h;
-					wd->new_ev=TRUE;
-				}else{
-					ms_error("Could not retrieve MSDisplay from window !");
-				}
-			}
-		break;
-		default:
-			return DefWindowProc(hwnd, uMsg, wParam, lParam);
-	}
-	return 0;
-}
-
-static HWND create_window(int w, int h)
-{
-	WNDCLASS wc;
-	HINSTANCE hInstance = GetModuleHandle(NULL);
-	HWND hwnd;
-	RECT rect;
-	wc.style = 0 ;
-	wc.lpfnWndProc = window_proc;
-	wc.cbClsExtra = 0;
-	wc.cbWndExtra = 0;
-	wc.hInstance = NULL;
-	wc.hIcon = NULL;
-	wc.hCursor = LoadCursor(hInstance, IDC_ARROW);
-	wc.hbrBackground = NULL;
-	wc.lpszMenuName =  NULL;
-	wc.lpszClassName = "Video Window";
-	
-	if(!RegisterClass(&wc))
-	{
-		/* already registred! */
-	}
-	rect.left=100;
-	rect.top=100;
-	rect.right=rect.left+w;
-	rect.bottom=rect.top+h;
-	if (!AdjustWindowRect(&rect,WS_OVERLAPPEDWINDOW|WS_VISIBLE /*WS_CAPTION WS_TILED|WS_BORDER*/,FALSE)){
-		ms_error("AdjustWindowRect failed.");
-	}
-	ms_message("AdjustWindowRect: %li,%li %li,%li",rect.left,rect.top,rect.right,rect.bottom);
-	hwnd=CreateWindow("Video Window", "Video window", 
-		WS_OVERLAPPEDWINDOW /*WS_THICKFRAME*/ | WS_VISIBLE ,
-		CW_USEDEFAULT, CW_USEDEFAULT, rect.right-rect.left,rect.bottom-rect.top,
-													NULL, NULL, hInstance, NULL);
-	if (hwnd==NULL){
-		ms_error("Fail to create video window");
-	}
-	return hwnd;
-}
-
-static bool_t win_display_init(MSDisplay *obj, MSFilter *f, MSPicture *fbuf, MSPicture *fbuf_selfview){
-	WinDisplay *wd=(WinDisplay*)obj->data;
-	int ysize,usize;
-
-	if (wd!=NULL)
-	{
-		wd->filter = NULL;
-		if (wd->ddh) DrawDibClose(wd->ddh);
-		wd->ddh=NULL;
-		if (wd->fb.planes[0]) ms_free(wd->fb.planes[0]);
-		wd->fb.planes[0]=NULL;
-		wd->fb.planes[1]=NULL;
-		wd->fb.planes[2]=NULL;
-		wd->fb.planes[3]=NULL;
-		if (wd->rgb) ms_free(wd->rgb);
-		wd->rgb=NULL;
-		wd->rgb_len=0;
-		ms_sws_freeContext(wd->sws);
-		wd->sws=NULL;
-		if (wd->fb_selfview.planes[0]) ms_free(wd->fb_selfview.planes[0]);
-		wd->fb_selfview.planes[0]=NULL;
-		wd->fb_selfview.planes[1]=NULL;
-		wd->fb_selfview.planes[2]=NULL;
-		wd->fb_selfview.planes[3]=NULL;
-		if (wd->rgb_selfview) ms_free(wd->rgb_selfview);
-		wd->rgb_selfview=NULL;
-		wd->rgb_len_selfview=0;
-		ms_sws_freeContext(wd->sws_selfview);
-		wd->sws_selfview=NULL;
-		wd->last_rect_w=0;
-		wd->last_rect_h=0;
-	}
-	else
-		wd=(WinDisplay*)ms_new0(WinDisplay,1);
-	
-	wd->filter = f;
-	obj->data=wd;
-	
-	wd->fb.w=fbuf->w;
-	wd->fb.h=fbuf->h;
-	wd->fb_selfview.w=fbuf_selfview->w;
-	wd->fb_selfview.h=fbuf_selfview->h;
-
-	if (wd->window==NULL){
-		if (obj->use_external_window && obj->window_id!=0){
-			void *p;
-			wd->window=(HWND)obj->window_id;
-			p=(void*)GetWindowLongPtr(wd->window,GWLP_USERDATA);
-			if (p!=NULL){
-				ms_error("Gulp: this externally supplied windows seems to "
-					"already have a userdata ! resizing will crash !");
-			}else SetWindowLongPtr(wd->window,GWLP_USERDATA,(LONG_PTR)obj);
-		}else{
-			wd->window=create_window(wd->fb.w,wd->fb.h);
-			obj->window_id=(long)wd->window;
-			if (wd->window!=NULL) SetWindowLongPtr(wd->window,GWLP_USERDATA,(LONG_PTR)obj);
-			else return FALSE;
-		}
-	}else if (!obj->use_external_window){
-		/* the window might need to be resized*/
-		RECT cur;
-		GetWindowRect(wd->window,&cur);
-		MoveWindow(wd->window,cur.left, cur.top, wd->fb.w, wd->fb.h,TRUE);
-	}
-	
-	if (wd->ddh==NULL) wd->ddh=DrawDibOpen();
-	if (wd->ddh==NULL){
-		ms_error("DrawDibOpen() failed.");
-		return FALSE;
-	}
-
-	/*allocate yuv and rgb buffers*/
-	if (wd->fb_selfview.planes[0]) ms_free(wd->fb_selfview.planes[0]);
-	if (wd->rgb_selfview) ms_free(wd->rgb_selfview);
-	ysize=wd->fb_selfview.w*wd->fb_selfview.h;
-	usize=ysize/4;
-	fbuf_selfview->planes[0]=wd->fb_selfview.planes[0]=(uint8_t*)ms_malloc0(ysize+2*usize);
-	fbuf_selfview->planes[1]=wd->fb_selfview.planes[1]=wd->fb_selfview.planes[0]+ysize;
-	fbuf_selfview->planes[2]=wd->fb_selfview.planes[2]=wd->fb_selfview.planes[1]+usize;
-	fbuf_selfview->planes[3]=NULL;
-	fbuf_selfview->strides[0]=wd->fb_selfview.strides[0]=wd->fb_selfview.w;
-	fbuf_selfview->strides[1]=wd->fb_selfview.strides[1]=wd->fb_selfview.w/2;
-	fbuf_selfview->strides[2]=wd->fb_selfview.strides[2]=wd->fb_selfview.w/2;
-	fbuf_selfview->strides[3]=0;
-
-	wd->rgb_len_selfview=ysize*3;
-	wd->rgb_selfview=(uint8_t*)ms_malloc0(wd->rgb_len_selfview);
-
-	if (wd->fb.planes[0]) ms_free(wd->fb.planes[0]);
-	if (wd->rgb) ms_free(wd->rgb);
-	ysize=wd->fb.w*wd->fb.h;
-	usize=ysize/4;
-	fbuf->planes[0]=wd->fb.planes[0]=(uint8_t*)ms_malloc0(ysize+2*usize);
-	fbuf->planes[1]=wd->fb.planes[1]=wd->fb.planes[0]+ysize;
-	fbuf->planes[2]=wd->fb.planes[2]=wd->fb.planes[1]+usize;
-	fbuf->planes[3]=NULL;
-	fbuf->strides[0]=wd->fb.strides[0]=wd->fb.w;
-	fbuf->strides[1]=wd->fb.strides[1]=wd->fb.w/2;
-	fbuf->strides[2]=wd->fb.strides[2]=wd->fb.w/2;
-	fbuf->strides[3]=0;
-
-	wd->rgb_len=ysize*3;
-	wd->rgb=(uint8_t*)ms_malloc0(wd->rgb_len);
-	wd->last_rect_w=0;
-	wd->last_rect_h=0;
-	return TRUE;
-}
-
-typedef struct rgb{
-	uint8_t r,g,b;
-} rgb_t;
-
-typedef struct yuv{
-	uint8_t y,u,v;
-} yuv_t;
-
-
-
-static void yuv420p_to_rgb(WinDisplay *wd, MSPicture *src, uint8_t *rgb){
-	int rgb_stride=-src->w*3;
-	uint8_t *p;
-
-	p=rgb+(src->w*3*(src->h-1));
-	if (wd->sws==NULL){
-		wd->sws=ms_sws_getContext(src->w,src->h,PIX_FMT_YUV420P,
-			src->w,src->h, PIX_FMT_BGR24,
-			SWS_FAST_BILINEAR, NULL, NULL, NULL);
-	}
-	if (ms_sws_scale(wd->sws,src->planes,src->strides, 0,
-           			src->h, &p, &rgb_stride)<0){
-		ms_error("Error in 420->rgb ms_sws_scale().");
-	}
-}
-
-static void yuv420p_to_rgb_selfview(WinDisplay *wd, MSPicture *src, uint8_t *rgb){
-	int rgb_stride=-src->w*3;
-	uint8_t *p;
-
-	p=rgb+(src->w*3*(src->h-1));
-	if (wd->sws_selfview==NULL){
-		wd->sws_selfview=ms_sws_getContext(src->w,src->h,PIX_FMT_YUV420P,
-			src->w,src->h, PIX_FMT_BGR24,
-			SWS_FAST_BILINEAR, NULL, NULL, NULL);
-	}
-	if (ms_sws_scale(wd->sws_selfview,src->planes,src->strides, 0,
-           			src->h, &p, &rgb_stride)<0){
-		ms_error("Error in 420->rgb ms_sws_scale().");
-	}
-}
-
-static void win_display_update(MSDisplay *obj, int new_image, int new_selfview){
-	WinDisplay *wd=(WinDisplay*)obj->data;
-	HDC hdc;
-	BITMAPINFOHEADER bi;
-	RECT rect;
-	bool_t ret;
-	int ratiow;
-	int ratioh;
-	int w;
-	int h;
-	int corner;
-	float sv_scalefactor;
-	float sv_pos[3];
-	int color[3];
-
-	HDC dd_hdc;
-	HBITMAP dd_bmp;
-	HBRUSH brush;
-	BOOL dont_draw;
-
-	if (wd->window==NULL) return;
-	hdc=GetDC(wd->window);