commit f88eecf79b766761374b5ad9b2ade3d32069f457
Author: Tasanakorn Phaipool <tasanakorn@gmail.com>
Date:   Tue Jul 16 19:54:36 2013 +0700

    Init

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4be3295
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/build/
+/nbproject/
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..2b0ec30
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 2.8)
+
+SET(COMPILE_DEFINITIONS -Werror)
+
+include_directories(/opt/vc/include)
+
+link_directories(/opt/vc/lib)
+
+add_executable(fbcp main.c)
+
+target_link_libraries(fbcp bcm_host)
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..3b3c65a
--- /dev/null
+++ b/main.c
@@ -0,0 +1,95 @@
+
+#include <stdio.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <linux/fb.h>
+#include <sys/mman.h>
+
+#include <bcm_host.h>
+
+int process() {
+    DISPMANX_DISPLAY_HANDLE_T display;
+    DISPMANX_MODEINFO_T display_info;
+    DISPMANX_RESOURCE_HANDLE_T screen_resource;
+    VC_IMAGE_TRANSFORM_T transform;
+    uint32_t image_prt;
+    VC_RECT_T rect1;
+    int ret;
+    int fbfd = 0;
+    char *fbp = 0;
+
+    struct fb_var_screeninfo vinfo;
+    struct fb_fix_screeninfo finfo;
+
+
+    bcm_host_init();
+
+    display = vc_dispmanx_display_open(0);
+    if (!display) {
+        syslog(LOG_ERR, "Unable to open primary display");
+        return -1;
+    }
+    ret = vc_dispmanx_display_get_info(display, &display_info);
+    if (ret) {
+        syslog(LOG_ERR, "Unable to get primary display information");
+        return -1;
+    }
+    syslog(LOG_INFO, "Primary display is %d x %d", display_info.width, display_info.height);
+
+
+    fbfd = open("/dev/fb1", O_RDWR);
+    if (!fbfd) {
+        syslog(LOG_ERR, "Unable to open secondary display");
+        return -1;
+    }
+    if (ioctl(fbfd, FBIOGET_FSCREENINFO, &finfo)) {
+        syslog(LOG_ERR, "Unable to get secondary display information");
+        return -1;
+    }
+    if (ioctl(fbfd, FBIOGET_VSCREENINFO, &vinfo)) {
+        syslog(LOG_ERR, "Unable to get secondary display information");
+        return -1;
+    }
+
+    syslog(LOG_INFO, "Second display is %d x %d %dbps\n", vinfo.xres, vinfo.yres, vinfo.bits_per_pixel);
+
+    screen_resource = vc_dispmanx_resource_create(VC_IMAGE_RGB565, vinfo.xres, vinfo.yres, &image_prt);
+    if (!screen_resource) {
+        syslog(LOG_ERR, "Unable to create screen buffer");
+        close(fbfd);
+        vc_dispmanx_display_close(display);
+        return -1;
+    }
+
+    fbp = (char*) mmap(0, finfo.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fbfd, 0);
+    if (fbp <= 0) {
+        syslog(LOG_ERR, "Unable to create mamory mapping");
+        close(fbfd);
+        ret = vc_dispmanx_resource_delete(screen_resource);
+        vc_dispmanx_display_close(display);
+        return -1;
+    }
+
+    vc_dispmanx_rect_set(&rect1, 0, 0, vinfo.xres, vinfo.yres);
+
+    while (1) {
+        ret = vc_dispmanx_snapshot(display, screen_resource, 0);
+        vc_dispmanx_resource_read_data(screen_resource, &rect1, fbp, vinfo.xres * vinfo.bits_per_pixel / 8);
+        usleep(50 * 1000);
+    }
+
+    munmap(fbp, finfo.smem_len);
+    close(fbfd);
+    ret = vc_dispmanx_resource_delete(screen_resource);
+    vc_dispmanx_display_close(display);
+}
+
+int main(int argc, char **argv) {
+    setlogmask(LOG_UPTO(LOG_DEBUG));
+    openlog("fbcp", LOG_NDELAY | LOG_PID, LOG_USER);
+
+    return process();
+}
+
+
+