From 660641f328d4e4e2208f35b16d71b0dfcedff9a6 Mon Sep 17 00:00:00 2001
From: twinaphex <libretro@gmail.com>
Date: Wed, 3 Jun 2015 18:22:54 +0200
Subject: [PATCH] Pass handle to input driver to joypad driver's init function

---
 input/drivers/android_input.c          |  2 +-
 input/drivers/cocoa_input.c            |  2 +-
 input/drivers/ctr_input.c              |  2 +-
 input/drivers/dinput.c                 |  4 ++--
 input/drivers/gx_input.c               |  2 +-
 input/drivers/linuxraw_input.c         |  3 ++-
 input/drivers/ps3_input.c              |  2 +-
 input/drivers/psp_input.c              |  3 ++-
 input/drivers/qnx_input.c              |  2 +-
 input/drivers/sdl_input.c              |  2 +-
 input/drivers/udev_input.c             |  2 +-
 input/drivers/x11_input.c              |  2 +-
 input/drivers/xdk_xinput_input.c       |  2 +-
 input/drivers_joypad/android_joypad.c  |  4 +++-
 input/drivers_joypad/ctr_joypad.c      |  4 +++-
 input/drivers_joypad/dinput_joypad.c   |  4 +++-
 input/drivers_joypad/gx_joypad.c       |  4 +++-
 input/drivers_joypad/hid_joypad.c      |  4 +++-
 input/drivers_joypad/linuxraw_joypad.c |  4 +++-
 input/drivers_joypad/null_joypad.c     |  3 ++-
 input/drivers_joypad/parport_joypad.c  |  4 +++-
 input/drivers_joypad/ps3_joypad.c      |  4 +++-
 input/drivers_joypad/psp_joypad.c      |  4 +++-
 input/drivers_joypad/qnx_joypad.c      |  4 +++-
 input/drivers_joypad/sdl_joypad.c      |  4 +++-
 input/drivers_joypad/udev_joypad.c     |  4 +++-
 input/drivers_joypad/xdk_joypad.c      |  3 ++-
 input/drivers_joypad/xinput_joypad.c   |  4 +++-
 input/input_joypad_driver.c            | 12 ++++++------
 input/input_joypad_driver.h            |  6 +++---
 tools/retroarch-joyconfig.c            |  2 +-
 31 files changed, 69 insertions(+), 39 deletions(-)

diff --git a/input/drivers/android_input.c b/input/drivers/android_input.c
index 7d6e2f0e4a..e0ff133ee2 100644
--- a/input/drivers/android_input.c
+++ b/input/drivers/android_input.c
@@ -438,7 +438,7 @@ static void *android_input_init(void)
       return NULL;
 
    android->pads_connected = 0;
-   android->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   android->joypad = input_joypad_init_driver(settings->input.joypad_driver, android);
 
    frontend_android_get_version_sdk(&sdk);
 
diff --git a/input/drivers/cocoa_input.c b/input/drivers/cocoa_input.c
index f148543b19..3cff350b9c 100644
--- a/input/drivers/cocoa_input.c
+++ b/input/drivers/cocoa_input.c
@@ -238,7 +238,7 @@ static void *cocoa_input_init(void)
     
    input_keymaps_init_keyboard_lut(rarch_key_map_apple_hid);
 
-   apple->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   apple->joypad = input_joypad_init_driver(settings->input.joypad_driver, apple);
     
    return apple;
 }
diff --git a/input/drivers/ctr_input.c b/input/drivers/ctr_input.c
index 9b5f580674..204fc2a5e6 100644
--- a/input/drivers/ctr_input.c
+++ b/input/drivers/ctr_input.c
@@ -74,7 +74,7 @@ static void* ctr_input_initialize(void)
    if (!ctr)
       return NULL;
 
-   ctr->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   ctr->joypad = input_joypad_init_driver(settings->input.joypad_driver, ctr);
 
    return ctr;
 }
diff --git a/input/drivers/dinput.c b/input/drivers/dinput.c
index 1c7f227a1b..d3ad106f27 100644
--- a/input/drivers/dinput.c
+++ b/input/drivers/dinput.c
@@ -165,7 +165,7 @@ static void *dinput_init(void)
    }
 
    input_keymaps_init_keyboard_lut(rarch_key_map_dinput);
-   di->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   di->joypad = input_joypad_init_driver(settings->input.joypad_driver, di);
 
    return di;
 }
@@ -576,7 +576,7 @@ bool dinput_handle_message(void *dinput, UINT message, WPARAM wParam, LPARAM lPa
       {
          if (di->joypad)
             di->joypad->destroy();
-         di->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+         di->joypad = input_joypad_init_driver(settings->input.joypad_driver, di);
          break;
       }
       case WM_MOUSEWHEEL:
diff --git a/input/drivers/gx_input.c b/input/drivers/gx_input.c
index 89372a095a..803a842670 100644
--- a/input/drivers/gx_input.c
+++ b/input/drivers/gx_input.c
@@ -75,7 +75,7 @@ static void *gx_input_init(void)
    if (!gx)
       return NULL;
 
-   gx->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   gx->joypad = input_joypad_init_driver(settings->input.joypad_driver, gx);
 
    return gx;
 }
diff --git a/input/drivers/linuxraw_input.c b/input/drivers/linuxraw_input.c
index fa37559c8a..16d09232fb 100644
--- a/input/drivers/linuxraw_input.c
+++ b/input/drivers/linuxraw_input.c
@@ -116,7 +116,8 @@ static void *linuxraw_input_init(void)
 
    atexit(linuxraw_reset_kbmd);
 
-   linuxraw->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   linuxraw->joypad = input_joypad_init_driver(
+         settings->input.joypad_driver, linuxraw);
    input_keymaps_init_keyboard_lut(rarch_key_map_linux);
 
    /* We need to disable use of stdin command interface if 
diff --git a/input/drivers/ps3_input.c b/input/drivers/ps3_input.c
index f85e585d3c..0bfb0adccf 100644
--- a/input/drivers/ps3_input.c
+++ b/input/drivers/ps3_input.c
@@ -161,7 +161,7 @@ static void* ps3_input_init(void)
    if (!ps3)
       return NULL;
 
-   ps3->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   ps3->joypad = input_joypad_init_driver(settings->input.joypad_driver, ps3);
 
    if (ps3->joypad)
       ps3->joypad->init();
diff --git a/input/drivers/psp_input.c b/input/drivers/psp_input.c
index e7bf88d87f..dc34e15eef 100644
--- a/input/drivers/psp_input.c
+++ b/input/drivers/psp_input.c
@@ -87,7 +87,8 @@ static void* psp_input_initialize(void)
    if (!psp)
       return NULL;
    
-   psp->joypad = input_joypad_init_driver(settings->input.joypad_driver);   
+   psp->joypad = input_joypad_init_driver(
+         settings->input.joypad_driver, psp);
 
    return psp;
 }
diff --git a/input/drivers/qnx_input.c b/input/drivers/qnx_input.c
index bd574de33b..402b038a70 100644
--- a/input/drivers/qnx_input.c
+++ b/input/drivers/qnx_input.c
@@ -646,7 +646,7 @@ static void *qnx_input_init(void)
    }
 
    qnx->joypad = input_joypad_init_driver(
-         settings->input.joypad_driver);
+         settings->input.joypad_driver, qnx);
 
    for (i = 0; i < MAX_PADS; ++i)
    {
diff --git a/input/drivers/sdl_input.c b/input/drivers/sdl_input.c
index a25962efad..dac672c519 100644
--- a/input/drivers/sdl_input.c
+++ b/input/drivers/sdl_input.c
@@ -46,7 +46,7 @@ static void *sdl_input_init(void)
    if (!sdl)
       return NULL;
 
-   sdl->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   sdl->joypad = input_joypad_init_driver(settings->input.joypad_driver, sdl);
 
    RARCH_LOG("[SDL]: Input driver initialized.\n");
    return sdl;
diff --git a/input/drivers/udev_input.c b/input/drivers/udev_input.c
index cb3d87d6a8..f178490c72 100644
--- a/input/drivers/udev_input.c
+++ b/input/drivers/udev_input.c
@@ -816,7 +816,7 @@ static void *udev_input_init(void)
    if (!udev->num_devices)
       RARCH_WARN("[udev]: Couldn't open any keyboard, mouse or touchpad. Are permissions set correctly for /dev/input/event*?\n");
 
-   udev->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   udev->joypad = input_joypad_init_driver(settings->input.joypad_driver, udev);
    input_keymaps_init_keyboard_lut(rarch_key_map_linux);
 
    disable_terminal_input();
diff --git a/input/drivers/x11_input.c b/input/drivers/x11_input.c
index d4640c1591..40e8102c4d 100644
--- a/input/drivers/x11_input.c
+++ b/input/drivers/x11_input.c
@@ -64,7 +64,7 @@ static void *x_input_init(void)
    x11->display = (Display*)driver->video_display;
    x11->win     = (Window)driver->video_window;
 
-   x11->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   x11->joypad = input_joypad_init_driver(settings->input.joypad_driver, x11);
    input_keymaps_init_keyboard_lut(rarch_key_map_x11);
 
    return x11;
diff --git a/input/drivers/xdk_xinput_input.c b/input/drivers/xdk_xinput_input.c
index 6830bd6117..0d9f6f6855 100644
--- a/input/drivers/xdk_xinput_input.c
+++ b/input/drivers/xdk_xinput_input.c
@@ -80,7 +80,7 @@ static void *xdk_input_init(void)
    if (!xdk)
       return NULL;
 
-   xdk->joypad = input_joypad_init_driver(settings->input.joypad_driver);
+   xdk->joypad = input_joypad_init_driver(settings->input.joypad_driver, xdk);
 
    return xdk;
 }
diff --git a/input/drivers_joypad/android_joypad.c b/input/drivers_joypad/android_joypad.c
index bc28266b2f..ec6aaa890d 100644
--- a/input/drivers_joypad/android_joypad.c
+++ b/input/drivers_joypad/android_joypad.c
@@ -22,12 +22,14 @@ static const char *android_joypad_name(unsigned pad)
    return settings ? settings->input.device_names[pad] : NULL;
 }
 
-static bool android_joypad_init(void)
+static bool android_joypad_init(void *data)
 {
    unsigned autoconf_pad;
    settings_t *settings       = config_get_ptr();
    autoconfig_params_t params = {{0}};
 
+   (void)data;
+
    for (autoconf_pad = 0; autoconf_pad < MAX_USERS; autoconf_pad++)
    {
       strlcpy(settings->input.device_names[autoconf_pad],
diff --git a/input/drivers_joypad/ctr_joypad.c b/input/drivers_joypad/ctr_joypad.c
index b94be8c613..55036e371f 100644
--- a/input/drivers_joypad/ctr_joypad.c
+++ b/input/drivers_joypad/ctr_joypad.c
@@ -51,10 +51,12 @@ static void ctr_joypad_autodetect_add(unsigned autoconf_pad)
    input_config_autoconfigure_joypad(&params);
 }
 
-static bool ctr_joypad_init(void)
+static bool ctr_joypad_init(void *data)
 {
    ctr_joypad_autodetect_add(0);
 
+   (void)data;
+
    return true;
 }
 
diff --git a/input/drivers_joypad/dinput_joypad.c b/input/drivers_joypad/dinput_joypad.c
index d7c880e603..286fef4b11 100644
--- a/input/drivers_joypad/dinput_joypad.c
+++ b/input/drivers_joypad/dinput_joypad.c
@@ -240,10 +240,12 @@ enum_iteration_done:
    return DIENUM_CONTINUE; 
 }
 
-static bool dinput_joypad_init(void)
+static bool dinput_joypad_init(void *data)
 {
    unsigned i;
 
+   (void)data;
+
    if (!dinput_init_context())
       return false;
    
diff --git a/input/drivers_joypad/gx_joypad.c b/input/drivers_joypad/gx_joypad.c
index b1a86cd443..3041405192 100644
--- a/input/drivers_joypad/gx_joypad.c
+++ b/input/drivers_joypad/gx_joypad.c
@@ -558,13 +558,15 @@ static void gx_joypad_poll(void)
       *lifecycle_state |= (1ULL << RARCH_MENU_TOGGLE);
 }
 
-static bool gx_joypad_init(void)
+static bool gx_joypad_init(void *data)
 {
    SYS_SetResetCallback(reset_cb);
 #ifdef HW_RVL
    SYS_SetPowerCallback(power_callback);
 #endif
 
+   (void)data;
+
    PAD_Init();
 #ifdef HW_RVL
    WPADInit();
diff --git a/input/drivers_joypad/hid_joypad.c b/input/drivers_joypad/hid_joypad.c
index 770ea941c3..6037851a48 100644
--- a/input/drivers_joypad/hid_joypad.c
+++ b/input/drivers_joypad/hid_joypad.c
@@ -21,12 +21,14 @@
 
 static const hid_driver_t *generic_hid;
 
-static bool hid_joypad_init(void)
+static bool hid_joypad_init(void *data)
 {
    generic_hid = input_hid_init_first();
    if (!generic_hid)
        return false;
 
+   (void)data;
+
    return true;
 }
 
diff --git a/input/drivers_joypad/linuxraw_joypad.c b/input/drivers_joypad/linuxraw_joypad.c
index 4269ba58f3..0ae41b7bd0 100644
--- a/input/drivers_joypad/linuxraw_joypad.c
+++ b/input/drivers_joypad/linuxraw_joypad.c
@@ -217,7 +217,7 @@ static void linuxraw_joypad_setup_notify(void)
    inotify_add_watch(g_notify, "/dev/input", IN_DELETE | IN_CREATE | IN_ATTRIB);
 }
 
-static bool linuxraw_joypad_init(void)
+static bool linuxraw_joypad_init(void *data)
 {
    unsigned i;
    settings_t *settings = config_get_ptr();
@@ -226,6 +226,8 @@ static bool linuxraw_joypad_init(void)
    if (g_epoll < 0)
       return false;
 
+   (void)data;
+
    for (i = 0; i < MAX_USERS; i++)
    {
       char path[PATH_MAX_LENGTH];
diff --git a/input/drivers_joypad/null_joypad.c b/input/drivers_joypad/null_joypad.c
index 3c4d1e877d..90438b2695 100644
--- a/input/drivers_joypad/null_joypad.c
+++ b/input/drivers_joypad/null_joypad.c
@@ -25,8 +25,9 @@ static const char *null_joypad_name(unsigned pad)
    return "null";
 }
 
-static bool null_joypad_init(void)
+static bool null_joypad_init(void *data)
 {
+   (void)data;
    return true;
 }
 
diff --git a/input/drivers_joypad/parport_joypad.c b/input/drivers_joypad/parport_joypad.c
index 2cac1f76f0..3a8f4018b5 100644
--- a/input/drivers_joypad/parport_joypad.c
+++ b/input/drivers_joypad/parport_joypad.c
@@ -223,7 +223,7 @@ static void parport_free_pad(struct parport_joypad *pad)
    pad->fd = -1;
 }
 
-static bool parport_joypad_init(void)
+static bool parport_joypad_init(void *data)
 {
    unsigned i, j;
    bool found_enabled_button;
@@ -233,6 +233,8 @@ static bool parport_joypad_init(void)
    settings_t *settings       = config_get_ptr();
    autoconfig_params_t params = {{0}};
 
+   (void)data;
+
    memset(buf, 0, PARPORT_NUM_BUTTONS * 3 + 1);
 
    for (i = 0; i < MAX_USERS; i++)
diff --git a/input/drivers_joypad/ps3_joypad.c b/input/drivers_joypad/ps3_joypad.c
index 85adac0f0e..509df63a8d 100644
--- a/input/drivers_joypad/ps3_joypad.c
+++ b/input/drivers_joypad/ps3_joypad.c
@@ -53,8 +53,10 @@ static void ps3_joypad_autodetect_add(unsigned autoconf_pad)
    input_config_autoconfigure_joypad(&params);
 }
 
-static bool ps3_joypad_init(void)
+static bool ps3_joypad_init(void *data)
 {
+   (void)data;
+
    cellPadInit(MAX_PADS);
 
    return true;
diff --git a/input/drivers_joypad/psp_joypad.c b/input/drivers_joypad/psp_joypad.c
index 73f4380c7c..b78f18224c 100644
--- a/input/drivers_joypad/psp_joypad.c
+++ b/input/drivers_joypad/psp_joypad.c
@@ -40,8 +40,10 @@ static void psp_joypad_autodetect_add(unsigned autoconf_pad)
    input_config_autoconfigure_joypad(&params);
 }
 
-static bool psp_joypad_init(void)
+static bool psp_joypad_init(void *data)
 {
+   (void)data;
+
    psp_joypad_autodetect_add(0);
 
    return true;
diff --git a/input/drivers_joypad/qnx_joypad.c b/input/drivers_joypad/qnx_joypad.c
index f6effcc933..2775e8eabe 100644
--- a/input/drivers_joypad/qnx_joypad.c
+++ b/input/drivers_joypad/qnx_joypad.c
@@ -23,11 +23,13 @@ static const char *qnx_joypad_name(unsigned pad)
    return settings ? settings->input.device_names[pad] : NULL;
 }
 
-static bool qnx_joypad_init(void)
+static bool qnx_joypad_init(void *data)
 {
    unsigned autoconf_pad;
    settings_t *settings = config_get_ptr();
 
+   (void)data;
+
    for (autoconf_pad = 0; autoconf_pad < MAX_USERS; autoconf_pad++)
    {
       autoconfig_params_t params = {{0}};
diff --git a/input/drivers_joypad/sdl_joypad.c b/input/drivers_joypad/sdl_joypad.c
index 12402bc128..5c6074f3cd 100644
--- a/input/drivers_joypad/sdl_joypad.c
+++ b/input/drivers_joypad/sdl_joypad.c
@@ -227,10 +227,12 @@ static void sdl_joypad_destroy(void)
    memset(sdl_pads, 0, sizeof(sdl_pads));
 }
 
-static bool sdl_joypad_init(void)
+static bool sdl_joypad_init(void *data)
 {
    unsigned i, num_sticks;
 
+   (void)data;
+
    if (SDL_WasInit(0) == 0)
    {
       if (SDL_Init(g_subsystem) < 0)
diff --git a/input/drivers_joypad/udev_joypad.c b/input/drivers_joypad/udev_joypad.c
index 8ab8f36e40..3c4e70b0e1 100644
--- a/input/drivers_joypad/udev_joypad.c
+++ b/input/drivers_joypad/udev_joypad.c
@@ -503,7 +503,7 @@ static void udev_joypad_destroy(void)
    g_udev = NULL;
 }
 
-static bool udev_joypad_init(void)
+static bool udev_joypad_init(void *data)
 {
    unsigned i;
    struct udev_list_entry *devs = NULL;
@@ -511,6 +511,8 @@ static bool udev_joypad_init(void)
    struct udev_enumerate *enumerate = NULL;
    settings_t *settings = config_get_ptr();
 
+   (void)data;
+
    for (i = 0; i < MAX_USERS; i++)
    {
       udev_pads[i].fd = -1;
diff --git a/input/drivers_joypad/xdk_joypad.c b/input/drivers_joypad/xdk_joypad.c
index ee485844b0..a0b55fd16e 100644
--- a/input/drivers_joypad/xdk_joypad.c
+++ b/input/drivers_joypad/xdk_joypad.c
@@ -55,7 +55,7 @@ static void xdk_joypad_autodetect_add(unsigned autoconf_pad)
    input_config_autoconfigure_joypad(&params);
 }
 
-static bool xdk_joypad_init(void)
+static bool xdk_joypad_init(void *data)
 {
 #ifdef _XBOX1
    XInitDevices(0, NULL);
@@ -65,6 +65,7 @@ static bool xdk_joypad_init(void)
       xdk_joypad_autodetect_add(autoconf_pad);
 #endif
 
+   (void)data;
 
    return true;
 }
diff --git a/input/drivers_joypad/xinput_joypad.c b/input/drivers_joypad/xinput_joypad.c
index cf0697eb6f..ef8628d06f 100644
--- a/input/drivers_joypad/xinput_joypad.c
+++ b/input/drivers_joypad/xinput_joypad.c
@@ -150,13 +150,15 @@ const char *xinput_joypad_name(unsigned pad)
    return XBOX_CONTROLLER_NAMES[xuser];
 }
 
-static bool xinput_joypad_init(void)
+static bool xinput_joypad_init(void *data)
 {
    unsigned i, autoconf_pad;
    XINPUT_STATE dummy_state;
    const char *version = "1.4";
    settings_t *settings = config_get_ptr();
 
+   (void)data;
+
    g_xinput_dll = NULL;
 
    /* Find the correct path to load the DLL from.
diff --git a/input/input_joypad_driver.c b/input/input_joypad_driver.c
index a2e3381dbf..0636852500 100644
--- a/input/input_joypad_driver.c
+++ b/input/input_joypad_driver.c
@@ -152,16 +152,16 @@ const char* config_get_joypad_driver_options(void)
  *
  * Returns: joypad driver if found, otherwise NULL.
  **/
-const input_device_driver_t *input_joypad_init_driver(const char *ident)
+const input_device_driver_t *input_joypad_init_driver(const char *ident, void *data)
 {
    unsigned i;
    if (!ident || !*ident)
-      return input_joypad_init_first();
+      return input_joypad_init_first(data);
 
    for (i = 0; joypad_drivers[i]; i++)
    {
       if (strcmp(ident, joypad_drivers[i]->ident) == 0
-            && joypad_drivers[i]->init())
+            && joypad_drivers[i]->init(data))
       {
          RARCH_LOG("Found joypad driver: \"%s\".\n",
                joypad_drivers[i]->ident);
@@ -169,7 +169,7 @@ const input_device_driver_t *input_joypad_init_driver(const char *ident)
       }
    }
 
-   return input_joypad_init_first();
+   return input_joypad_init_first(data);
 }
 
 /**
@@ -179,13 +179,13 @@ const input_device_driver_t *input_joypad_init_driver(const char *ident)
  *
  * Returns: joypad driver if found, otherwise NULL.
  **/
-const input_device_driver_t *input_joypad_init_first(void)
+const input_device_driver_t *input_joypad_init_first(void *data)
 {
    unsigned i;
 
    for (i = 0; joypad_drivers[i]; i++)
    {
-      if (joypad_drivers[i]->init())
+      if (joypad_drivers[i]->init(data))
       {
          RARCH_LOG("Found joypad driver: \"%s\".\n",
                joypad_drivers[i]->ident);
diff --git a/input/input_joypad_driver.h b/input/input_joypad_driver.h
index 3927ac4ab3..94f1c7f398 100644
--- a/input/input_joypad_driver.h
+++ b/input/input_joypad_driver.h
@@ -31,7 +31,7 @@ enum retro_rumble_effect;
 
 struct rarch_joypad_driver
 {
-   bool (*init)(void);
+   bool (*init)(void *data);
    bool (*query_pad)(unsigned);
    void (*destroy)(void);
    bool (*button)(unsigned, uint16_t);
@@ -98,7 +98,7 @@ const char* config_get_joypad_driver_options(void);
  *
  * Returns: joypad driver if found, otherwise NULL.
  **/
-const input_device_driver_t *input_joypad_init_driver(const char *ident);
+const input_device_driver_t *input_joypad_init_driver(const char *ident, void *data);
 
 /**
  * input_joypad_init_first:
@@ -107,7 +107,7 @@ const input_device_driver_t *input_joypad_init_driver(const char *ident);
  *
  * Returns: joypad driver if found, otherwise NULL.
  **/
-const input_device_driver_t *input_joypad_init_first(void);
+const input_device_driver_t *input_joypad_init_first(void *data);
 
 #ifdef __cplusplus
 }
diff --git a/tools/retroarch-joyconfig.c b/tools/retroarch-joyconfig.c
index c939f204fb..b009884a51 100644
--- a/tools/retroarch-joyconfig.c
+++ b/tools/retroarch-joyconfig.c
@@ -124,7 +124,7 @@ static void get_binds(config_file_t *conf, config_file_t *auto_conf,
       int player, int joypad)
 {
    int i, timeout_cnt;
-   const input_device_driver_t *driver = input_joypad_init_driver(g_driver);
+   const input_device_driver_t *driver = input_joypad_init_driver(g_driver, NULL);
    if (!driver)
    {
       fprintf(stderr, "Cannot find any valid input driver.\n");