diff options
Diffstat (limited to 'gdk/linux-fb/gdkrender-fb.c')
| -rw-r--r-- | gdk/linux-fb/gdkrender-fb.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/gdk/linux-fb/gdkrender-fb.c b/gdk/linux-fb/gdkrender-fb.c index b431c7d2fa..1535aa805b 100644 --- a/gdk/linux-fb/gdkrender-fb.c +++ b/gdk/linux-fb/gdkrender-fb.c @@ -1,5 +1,8 @@ +#include "config.h" #include "gdkprivate-fb.h" #include <string.h> +#include <signal.h> +#include <sys/time.h> /* * Reading pixel values from a generic drawable. @@ -1200,6 +1203,251 @@ _gdk_fb_gc_calc_state (GdkGC *gc, break; } } +} + +#ifdef ENABLE_SHADOW_FB +static void +gdk_shadow_fb_copy_rect_0 (gint x, gint y, gint width, gint height) +{ + guchar *dst, *src; + gint depth; + depth = gdk_display->modeinfo.bits_per_pixel / 8; + + dst = gdk_display->fb_mmap + x * depth + gdk_display->sinfo.line_length * y; + src = gdk_display->fb_mem + x * depth + gdk_display->fb_stride * y; + + width = width*depth; + while (height>0) + { + memcpy (dst, src, width); + dst += gdk_display->sinfo.line_length; + src += gdk_display->fb_stride; + height--; + } } +static void +gdk_shadow_fb_copy_rect_90 (gint x, gint y, gint width, gint height) +{ + guchar *dst, *src, *pdst; + gint depth; + gint w; + gint i; + + depth = gdk_display->modeinfo.bits_per_pixel / 8; + + src = gdk_display->fb_mem + x * depth + gdk_display->fb_stride * y; + dst = gdk_display->fb_mmap + y * depth + gdk_display->sinfo.line_length * (gdk_display->fb_width - x - 1); + + while (height>0) + { + w = width; + pdst = dst; + while (w>0) { + for (i=0;i<depth;i++) + *pdst++ = *src++; + pdst -= gdk_display->sinfo.line_length + depth; + w--; + } + dst += depth; + src += gdk_display->fb_stride - width * depth; + height--; + } +} + +static void +gdk_shadow_fb_copy_rect_180 (gint x, gint y, gint width, gint height) +{ + guchar *dst, *src, *pdst; + gint depth; + gint w; + gint i; + + depth = gdk_display->modeinfo.bits_per_pixel / 8; + + src = gdk_display->fb_mem + x * depth + gdk_display->fb_stride * y; + dst = gdk_display->fb_mmap + (gdk_display->fb_width - x - 1) * depth + gdk_display->sinfo.line_length * (gdk_display->fb_height - y - 1) ; + + while (height>0) + { + w = width; + pdst = dst; + while (w>0) { + for (i=0;i<depth;i++) + *pdst++ = *src++; + pdst -= 2 * depth; + w--; + } + dst -= gdk_display->sinfo.line_length; + src += gdk_display->fb_stride - width * depth; + height--; + } +} + +static void +gdk_shadow_fb_copy_rect_270 (gint x, gint y, gint width, gint height) +{ + guchar *dst, *src, *pdst; + gint depth; + gint w; + gint i; + + depth = gdk_display->modeinfo.bits_per_pixel / 8; + + src = gdk_display->fb_mem + x * depth + gdk_display->fb_stride * y; + dst = gdk_display->fb_mmap + (gdk_display->fb_height - y - 1) * depth + gdk_display->sinfo.line_length * x; + + while (height>0) + { + w = width; + pdst = dst; + while (w>0) { + for (i=0;i<depth;i++) + *pdst++ = *src++; + pdst += gdk_display->sinfo.line_length - depth; + w--; + } + dst -= depth; + src += gdk_display->fb_stride - width * depth; + height--; + } +} + +static void (*shadow_copy_rect[4]) (gint x, gint y, gint width, gint height); + +volatile gint refresh_queued = 0; +volatile gint refresh_x1, refresh_y1; +volatile gint refresh_x2, refresh_y2; + +static void +gdk_shadow_fb_refresh (int signum) +{ + gint minx, miny, maxx, maxy; + + if (!refresh_queued) + { + struct itimerval timeout; + /* Stop the timer */ + timeout.it_value.tv_sec = 0; + timeout.it_value.tv_usec = 0; + timeout.it_interval.tv_sec = 0; + timeout.it_interval.tv_usec = 0; + setitimer (ITIMER_REAL, &timeout, NULL); + return; + } + + + minx = refresh_x1; + miny = refresh_y1; + maxx = refresh_x2; + maxy = refresh_y2; + refresh_queued = 0; + + /* clip x */ + if (minx < 0) { + minx = 0; + maxx = MAX (maxx, 0); + } + if (maxx >= gdk_display->fb_width) { + maxx = gdk_display->fb_width-1; + minx = MIN (minx, maxx); + } + /* clip y */ + if (miny < 0) { + miny = 0; + maxy = MAX (maxy, 0); + } + if (maxy >= gdk_display->fb_height) { + maxy = gdk_display->fb_height-1; + miny = MIN (miny, maxy); + } + + (*shadow_copy_rect[_gdk_fb_screen_angle]) (minx, miny, maxx - minx + 1, maxy - miny + 1); +} + +void +gdk_shadow_fb_stop_updates (void) +{ + struct itimerval timeout; + + refresh_queued = 0; + + /* Stop the timer */ + timeout.it_value.tv_sec = 0; + timeout.it_value.tv_usec = 0; + timeout.it_interval.tv_sec = 0; + timeout.it_interval.tv_usec = 0; + setitimer (ITIMER_REAL, &timeout, NULL); + + refresh_queued = 0; +} + +void +gdk_shadow_fb_init (void) +{ + struct sigaction action; + + action.sa_handler = gdk_shadow_fb_refresh; + sigemptyset (&action.sa_mask); + action.sa_flags = 0; + + sigaction (SIGALRM, &action, NULL); + + shadow_copy_rect[GDK_FB_0_DEGREES] = gdk_shadow_fb_copy_rect_0; + shadow_copy_rect[GDK_FB_90_DEGREES] = gdk_shadow_fb_copy_rect_90; + shadow_copy_rect[GDK_FB_180_DEGREES] = gdk_shadow_fb_copy_rect_180; + shadow_copy_rect[GDK_FB_270_DEGREES] = gdk_shadow_fb_copy_rect_270; +} + +/* maxx and maxy are included */ +void +gdk_shadow_fb_update (gint minx, gint miny, gint maxx, gint maxy) +{ + struct itimerval timeout; + + g_assert (minx <= maxx); + g_assert (miny <= maxy); + + if (refresh_queued) + { + refresh_x1 = MIN (refresh_x1, minx); + refresh_y1 = MIN (refresh_y1, miny); + refresh_x2 = MAX (refresh_x2, maxx); + refresh_y2 = MAX (refresh_y2, maxy); + refresh_queued = 1; + } + else + { + refresh_x1 = minx; + refresh_y1 = miny; + refresh_x2 = maxx; + refresh_y2 = maxy; + refresh_queued = 1; + + getitimer (ITIMER_REAL, &timeout); + if (timeout.it_value.tv_usec == 0) + { + timeout.it_value.tv_sec = 0; + timeout.it_value.tv_usec = 20000; /* 20 ms => 50 fps */ + timeout.it_interval.tv_sec = 0; + timeout.it_interval.tv_usec = 20000; /* 20 ms => 50 fps */ + setitimer (ITIMER_REAL, &timeout, NULL); + } + } + +} +#else + +void +gdk_shadow_fb_update (gint minx, gint miny, gint maxx, gint maxy) +{ +} + +void +gdk_shadow_fb_init (void) +{ +} + +#endif + |