properly request a video mode with an alpha channel

[enigma2.git] / lib / gdi / fb.cpp

diff --git a/lib/gdi/fb.cpp b/lib/gdi/fb.cpp
index 727042dd81ada0693220fab894537a9df357208e..bb6041e0f76094710cb85642176a428daffa72f0 100644 (file)
--- a/lib/gdi/fb.cpp
+++ b/lib/gdi/fb.cpp
@@ -13,6 +13,10 @@
 #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;
 
@@ -23,6 +27,7 @@ fbClass *fbClass::getInstance()
 
 fbClass::fbClass(const char *fb)
 {
+       m_manual_blit=-1;
        instance=this;
        locked=0;
        available=0;
@@ -39,6 +44,8 @@ fbClass::fbClass(const char *fb)
                perror(fb);
                goto nolfb;
        }
+
+
        if (ioctl(fd, FBIOGET_VSCREENINFO, &screeninfo)<0)
        {
                perror("FBIOGET_VSCREENINFO");
@@ -64,6 +71,8 @@ fbClass::fbClass(const char *fb)
        }
 
        showConsole(0);
+
+       enableManualBlit();
        return;
 nolfb:
        lfb=0;
@@ -93,7 +102,32 @@ 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;
-       
+
+       switch (nbpp) {
+       case 16:
+               // ARGB 1555
+               screeninfo.transp.offset = 15;
+               screeninfo.transp.length = 1;
+               screeninfo.red.offset = 10;
+               screeninfo.red.length = 5;
+               screeninfo.green.offset = 5;
+               screeninfo.green.length = 5;
+               screeninfo.blue.offset = 0;
+               screeninfo.blue.length = 5;
+               break;
+       case 32:
+               // ARGB 8888
+               screeninfo.transp.offset = 24;
+               screeninfo.transp.length = 8;
+               screeninfo.red.offset = 16;
+               screeninfo.red.length = 8;
+               screeninfo.green.offset = 8;
+               screeninfo.green.length = 8;
+               screeninfo.blue.offset = 0;
+               screeninfo.blue.length = 8;
+               break;
+       }
+
        if (ioctl(fd, FBIOPUT_VSCREENINFO, &screeninfo)<0)
        {
                // try single buffering
@@ -111,6 +145,8 @@ int fbClass::SetMode(unsigned int nxRes, unsigned int nyRes, unsigned int nbpp)
        
        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",
@@ -144,6 +180,14 @@ 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)
@@ -151,6 +195,7 @@ fbClass::~fbClass()
        if (lfb)
                munmap(lfb, available);
        showConsole(1);
+       disableManualBlit();
 }
 
 int fbClass::PutCMAP()
@@ -162,7 +207,13 @@ int fbClass::lock()
 {
        if (locked)
                return -1;
-       locked=1;
+       if (m_manual_blit == 1)
+       {
+               locked = 2;
+               disableManualBlit();
+       }
+       else
+               locked = 1;
        return fd;
 }
 
@@ -170,7 +221,28 @@ 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;
+}
+