X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/966258dd4ca61e0fc632dba295cd0ced1ad0364e..06578d6778bff8aa2bd6a2387651dd0ba55aa27c:/lib/gdi/fb.cpp

diff --git a/lib/gdi/fb.cpp b/lib/gdi/fb.cpp
index 4a801bfe..8e8221c3 100644
--- a/lib/gdi/fb.cpp
+++ b/lib/gdi/fb.cpp
@@ -7,13 +7,16 @@
 #include <memory.h>
 #include <linux/kd.h>
 
-#include <lib/base/econfig.h>
 #include <lib/gdi/fb.h>
 
 #ifndef FBIO_WAITFORVSYNC
 #define FBIO_WAITFORVSYNC _IOW('F', 0x20, __u32)
 #endif
 
+#ifndef FBIO_BLIT
+#define FBIO_SET_MANUAL_BLIT _IOW('F', 0x21, __u8)
+#define FBIO_BLIT 0x22
+#endif
 
 fbClass *fbClass::instance;
 
@@ -24,6 +27,7 @@ fbClass *fbClass::getInstance()
 
 fbClass::fbClass(const char *fb)
 {
+	m_manual_blit=-1;
 	instance=this;
 	locked=0;
 	available=0;
@@ -40,6 +44,8 @@ fbClass::fbClass(const char *fb)
 		perror(fb);
 		goto nolfb;
 	}
+
+
 	if (ioctl(fd, FBIOGET_VSCREENINFO, &screeninfo)<0)
 	{
 		perror("FBIOGET_VSCREENINFO");
@@ -65,6 +71,8 @@ fbClass::fbClass(const char *fb)
 	}
 
 	showConsole(0);
+
+	enableManualBlit();
 	return;
 nolfb:
 	lfb=0;
@@ -94,12 +102,26 @@ int fbClass::SetMode(unsigned int nxRes, unsigned int nyRes, unsigned int nbpp)
 	screeninfo.width=0;
 	screeninfo.xoffset=screeninfo.yoffset=0;
 	screeninfo.bits_per_pixel=nbpp;
+	
 	if (ioctl(fd, FBIOPUT_VSCREENINFO, &screeninfo)<0)
 	{
-		perror("FBIOPUT_VSCREENINFO");
-		printf("fb failed\n");
-		return -1;
-	}
+		// try single buffering
+		screeninfo.yres_virtual=screeninfo.yres=nyRes;
+		
+		if (ioctl(fd, FBIOPUT_VSCREENINFO, &screeninfo)<0)
+		{
+			perror("FBIOPUT_VSCREENINFO");
+			printf("fb failed\n");
+			return -1;
+		}
+		eDebug(" - double buffering not available.");
+	} else
+		eDebug(" - double buffering available!");
+	
+	m_number_of_pages = screeninfo.yres_virtual / nyRes;
+	
+	ioctl(fd, FBIOGET_VSCREENINFO, &screeninfo);
+	
 	if ((screeninfo.xres!=nxRes) && (screeninfo.yres!=nyRes) && (screeninfo.bits_per_pixel!=nbpp))
 	{
 		eDebug("SetMode failed: wanted: %dx%dx%d, got %dx%dx%d",
@@ -133,6 +155,14 @@ int fbClass::waitVSync()
 	return ioctl(fd, FBIO_WAITFORVSYNC, &c);
 }
 
+void fbClass::blit()
+{
+	if (m_manual_blit == 1) {
+		if (ioctl(fd, FBIO_BLIT) < 0)
+			perror("FBIO_BLIT");
+	}
+}
+
 fbClass::~fbClass()
 {
 	if (available)
@@ -140,6 +170,7 @@ fbClass::~fbClass()
 	if (lfb)
 		munmap(lfb, available);
 	showConsole(1);
+	disableManualBlit();
 }
 
 int fbClass::PutCMAP()
@@ -151,7 +182,13 @@ int fbClass::lock()
 {
 	if (locked)
 		return -1;
-	locked=1;
+	if (m_manual_blit == 1)
+	{
+		locked = 2;
+		disableManualBlit();
+	}
+	else
+		locked = 1;
 	return fd;
 }
 
@@ -159,7 +196,28 @@ void fbClass::unlock()
 {
 	if (!locked)
 		return;
+	if (locked == 2)  // re-enable manualBlit
+		enableManualBlit();
 	locked=0;
 	SetMode(xRes, yRes, bpp);
 	PutCMAP();
 }
+
+void fbClass::enableManualBlit()
+{
+	unsigned char tmp = 1;
+	if (ioctl(fd,FBIO_SET_MANUAL_BLIT, &tmp)<0)
+		perror("FBIO_SET_MANUAL_BLIT");
+	else
+		m_manual_blit = 1;
+}
+
+void fbClass::disableManualBlit()
+{
+	unsigned char tmp = 0;
+	if (ioctl(fd,FBIO_SET_MANUAL_BLIT, &tmp)<0) 
+		perror("FBIO_SET_MANUAL_BLIT");
+	else
+		m_manual_blit = 0;
+}
+