libarmbox: try to fix getBlank/setBlank

Origin commit data
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Branch: master
Commit: d0a74bade9
Author: vanhofen <vanhofen@gmx.de>
Date: 2020-12-31 (Thu, 31 Dec 2020)

Origin message was:
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- libarmbox: try to fix getBlank/setBlank

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No further description and justification available within origin commit message!

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This commit was generated by Migit

libarmbox/video.cpp

@@ -398,6 +398,7 @@ cVideo::cVideo(int, void *, void *, unsigned int unit)
 	saturation = -1;
 	hue = -1;
 	video_standby = 0;
+	blank_mode = 0;
 	if (unit > 1) {
 		hal_info("%s: unit %d out of range, setting to 0\n", __func__, unit);
 		devnum = 0;
@@ -560,6 +561,7 @@ int cVideo::Start(void * /*PcrChannel*/, unsigned short /*PcrPid*/, unsigned sho
 		SetControl(VIDEO_CONTROL_HUE, hue);
 		hue = -1;
 	}
+	blank_mode = 0;
 	return res;
 }
 
@@ -572,17 +574,23 @@ int cVideo::Stop(bool blank)
 		return -1;
 	}
 	playstate = blank ? VIDEO_STOPPED : VIDEO_FREEZED;
+	blank_mode = blank;
 	return fop(ioctl, VIDEO_STOP, blank ? 1 : 0);
 }
 
-int cVideo::setBlank(int)
+int cVideo::setBlank(int enable)
 {
 	fop(ioctl, VIDEO_PLAY);
 	fop(ioctl, VIDEO_CONTINUE);
+	if (enable)
+	{
 		video_still_picture sp = { NULL, 0 };
 		fop(ioctl, VIDEO_STILLPICTURE, &sp);
 		return Stop(1);
 	}
+	else
+		return Start();
+}
 
 int cVideo::SetVideoSystem(int video_system, bool remember)
 {
@@ -741,9 +749,14 @@ void cVideo::Standby(unsigned int bOn)
 
 int cVideo::getBlank(void)
 {
+#if 0
 	int ret = proc_get_hex(VMPEG_xres[devnum]);
 	hal_debug("%s => %d\n", __func__, !ret);
 	return !ret;
+#else
+	hal_debug("%s => %d\n", __func__, blank_mode);
+	return blank_mode;
+#endif
 }
 
 void cVideo::Pig(int x, int y, int w, int h, int osd_w, int osd_h, int startx, int starty, int endx, int endy)

libarmbox/video_lib.h

@@ -189,6 +189,7 @@ class cVideo
 		int dynamic_contrast;
 		int scaler_sharpness;
 		int zapping_mode;
+		int blank_mode;
 
 		/* used internally by dmx */
 		int64_t GetPTS(void);