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mpv/libvo/w32_common.c
wm4 70fe8d12fa win32: don't crash if vo_w32_uninit() is called without vo_w32_init() 
This is a recent regression. At least vo_direct3d uses vo_w32_uninit()
in this way, and crashed if initialization failed at an early point.
2012-04-24 01:25:10 +02:00

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <limits.h>
#include <assert.h>
#include <windows.h>
#include <windowsx.h>
#include "options.h"
#include "input/keycodes.h"
#include "input/input.h"
#include "mp_msg.h"
#include "video_out.h"
#include "aspect.h"
#include "w32_common.h"
#include "mp_fifo.h"
#include "osdep/io.h"
#include "talloc.h"
#define WIN_ID_TO_HWND(x) ((HWND)(uint32_t)(x))
static const wchar_t classname[] = L"mplayer2";
static const struct mp_keymap vk_map[] = {
// special keys
{VK_ESCAPE, KEY_ESC}, {VK_BACK, KEY_BS}, {VK_TAB, KEY_TAB},
{VK_RETURN, KEY_ENTER}, {VK_PAUSE, KEY_PAUSE}, {VK_SNAPSHOT, KEY_PRINT},
// cursor keys
{VK_LEFT, KEY_LEFT}, {VK_UP, KEY_UP}, {VK_RIGHT, KEY_RIGHT}, {VK_DOWN, KEY_DOWN},
// navigation block
{VK_INSERT, KEY_INSERT}, {VK_DELETE, KEY_DELETE}, {VK_HOME, KEY_HOME}, {VK_END, KEY_END},
{VK_PRIOR, KEY_PAGE_UP}, {VK_NEXT, KEY_PAGE_DOWN},
// F-keys
{VK_F1, KEY_F+1}, {VK_F2, KEY_F+2}, {VK_F3, KEY_F+3}, {VK_F4, KEY_F+4},
{VK_F5, KEY_F+5}, {VK_F6, KEY_F+6}, {VK_F7, KEY_F+7}, {VK_F8, KEY_F+8},
{VK_F9, KEY_F+9}, {VK_F10, KEY_F+10}, {VK_F11, KEY_F+11}, {VK_F12, KEY_F+12},
// numpad
{VK_NUMPAD0, KEY_KP0}, {VK_NUMPAD1, KEY_KP1}, {VK_NUMPAD2, KEY_KP2},
{VK_NUMPAD3, KEY_KP3}, {VK_NUMPAD4, KEY_KP4}, {VK_NUMPAD5, KEY_KP5},
{VK_NUMPAD6, KEY_KP6}, {VK_NUMPAD7, KEY_KP7}, {VK_NUMPAD8, KEY_KP8},
{VK_NUMPAD9, KEY_KP9}, {VK_DECIMAL, KEY_KPDEC},
{0, 0}
};
static void add_window_borders(HWND hwnd, RECT *rc)
{
AdjustWindowRect(rc, GetWindowLong(hwnd, GWL_STYLE), 0);
}
// basically a reverse AdjustWindowRect (win32 doesn't appear to have this)
static void subtract_window_borders(HWND hwnd, RECT *rc)
{
RECT b = { 0, 0, 0, 0 };
add_window_borders(hwnd, &b);
rc->left -= b.left;
rc->top -= b.top;
rc->right -= b.right;
rc->bottom -= b.bottom;
}
// turn a WMSZ_* input value in v into the border that should be resized
// returns: 0=left, 1=top, 2=right, 3=bottom, -1=undefined
static int get_resize_border(int v) {
switch (v) {
case WMSZ_LEFT: return 3;
case WMSZ_TOP: return 2;
case WMSZ_RIGHT: return 3;
case WMSZ_BOTTOM: return 2;
case WMSZ_TOPLEFT: return 1;
case WMSZ_TOPRIGHT: return 1;
case WMSZ_BOTTOMLEFT: return 3;
case WMSZ_BOTTOMRIGHT: return 3;
default: return -1;
}
}
static bool key_state(struct vo *vo, int vk)
{
return GetKeyState(vk) & 0x8000;
}
static int mod_state(struct vo *vo)
{
int res = 0;
if (key_state(vo, VK_CONTROL))
res |= KEY_MODIFIER_CTRL;
if (key_state(vo, VK_SHIFT))
res |= KEY_MODIFIER_SHIFT;
if (key_state(vo, VK_MENU))
res |= KEY_MODIFIER_ALT;
return res;
}
static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
LPARAM lParam)
{
if (message == WM_NCCREATE) {
CREATESTRUCT *cs = (void*)lParam;
SetWindowLongPtrW(hWnd, GWLP_USERDATA, (LONG_PTR)cs->lpCreateParams);
}
struct vo *vo = (void*)GetWindowLongPtrW(hWnd, GWLP_USERDATA);
// message before WM_NCCREATE, pray to Raymond Chen that it's not important
if (!vo)
return DefWindowProcW(hWnd, message, wParam, lParam);
struct vo_w32_state *w32 = vo->w32;
switch (message) {
case WM_ERASEBKGND: // no need to erase background seperately
return 1;
case WM_PAINT:
w32->event_flags |= VO_EVENT_EXPOSE;
break;
case WM_MOVE: {
w32->event_flags |= VO_EVENT_MOVE;
POINT p = {0};
ClientToScreen(w32->window, &p);
w32->window_x = p.x;
w32->window_y = p.y;
mp_msg(MSGT_VO, MSGL_V, "[vo] move window: %d:%d\n",
w32->window_x, w32->window_y);
break;
}
case WM_SIZE: {
w32->event_flags |= VO_EVENT_RESIZE;
RECT r;
GetClientRect(w32->window, &r);
vo->dwidth = r.right;
vo->dheight = r.bottom;
mp_msg(MSGT_VO, MSGL_V, "[vo] resize window: %d:%d\n",
vo->dwidth, vo->dheight);
break;
}
case WM_SIZING:
if (vo_keepaspect && !vo_fs && WinID < 0) {
RECT *rc = (RECT*)lParam;
// get client area of the windows if it had the rect rc
// (subtracting the window borders)
RECT r = *rc;
subtract_window_borders(w32->window, &r);
int c_w = r.right - r.left, c_h = r.bottom - r.top;
float aspect = vo->aspdat.asp;
int d_w = c_h * aspect - c_w;
int d_h = c_w / aspect - c_h;
int d_corners[4] = { d_w, d_h, -d_w, -d_h };
int corners[4] = { rc->left, rc->top, rc->right, rc->bottom };
int corner = get_resize_border(wParam);
if (corner >= 0)
corners[corner] -= d_corners[corner];
*rc = (RECT) { corners[0], corners[1], corners[2], corners[3] };
return TRUE;
}
break;
case WM_CLOSE:
mplayer_put_key(vo->key_fifo, KEY_CLOSE_WIN);
break;
case WM_SYSCOMMAND:
switch (wParam) {
case SC_SCREENSAVE:
case SC_MONITORPOWER:
mp_msg(MSGT_VO, MSGL_V, "vo: win32: killing screensaver\n");
return 0;
}
break;
case WM_KEYDOWN:
case WM_SYSKEYDOWN: {
int mpkey = lookup_keymap_table(vk_map, wParam);
if (mpkey)
mplayer_put_key(vo->key_fifo, mpkey | mod_state(vo));
if (wParam == VK_F10)
return 0;
break;
}
case WM_CHAR:
case WM_SYSCHAR: {
int mods = mod_state(vo);
int code = wParam;
// Windows enables Ctrl+Alt when AltGr (VK_RMENU) is pressed.
// E.g. AltGr+9 on a German keyboard would yield Ctrl+Alt+[
// Warning: wine handles this differently. Don't test this on wine!
if (key_state(vo, VK_RMENU))
mods &= ~(KEY_MODIFIER_CTRL | KEY_MODIFIER_ALT);
// Apparently Ctrl+A to Ctrl+Z is special cased, and produces
// character codes from 1-26. Work it around.
// Also, enter/return (including the keypad variant) and CTRL+J both
// map to wParam==10. As a workaround, check VK_RETURN to
// distinguish these two key combinations.
if ((mods & KEY_MODIFIER_CTRL) && code >= 1 && code <= 26
&& !key_state(vo, VK_RETURN))
code = code - 1 + (mods & KEY_MODIFIER_SHIFT ? 'A' : 'a');
if (code >= 32 && code < (1<<21)) {
mplayer_put_key(vo->key_fifo, code | mods);
// At least with Alt+char, not calling DefWindowProcW stops
// Windows from emitting a beep.
return 0;
}
break;
}
case WM_LBUTTONDOWN:
if (!vo_nomouse_input && (vo_fs || (wParam & MK_CONTROL))) {
mplayer_put_key(vo->key_fifo, MOUSE_BTN0 | mod_state(vo));
break;
}
if (!vo_fs) {
ReleaseCapture();
SendMessage(hWnd, WM_NCLBUTTONDOWN, HTCAPTION, 0);
return 0;
}
break;
case WM_MBUTTONDOWN:
if (!vo_nomouse_input)
mplayer_put_key(vo->key_fifo, MOUSE_BTN1 | mod_state(vo));
break;
case WM_RBUTTONDOWN:
if (!vo_nomouse_input)
mplayer_put_key(vo->key_fifo, MOUSE_BTN2 | mod_state(vo));
break;
case WM_MOUSEMOVE:
vo_mouse_movement(vo, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
break;
case WM_MOUSEWHEEL:
if (!vo_nomouse_input) {
int x = GET_WHEEL_DELTA_WPARAM(wParam);
if (x > 0)
mplayer_put_key(vo->key_fifo, MOUSE_BTN3 | mod_state(vo));
else
mplayer_put_key(vo->key_fifo, MOUSE_BTN4 | mod_state(vo));
}
break;
case WM_XBUTTONDOWN:
if (!vo_nomouse_input) {
int x = HIWORD(wParam);
if (x == 1)
mplayer_put_key(vo->key_fifo, MOUSE_BTN5 | mod_state(vo));
else // if (x == 2)
mplayer_put_key(vo->key_fifo, MOUSE_BTN6 | mod_state(vo));
}
break;
}
return DefWindowProcW(hWnd, message, wParam, lParam);
}
/**
* \brief Dispatch incoming window events and handle them.
*
* This function should be placed inside libvo's function "check_events".
*
* \return int with these flags possibly set, take care to handle in the right order
* if it matters in your driver:
*
* VO_EVENT_RESIZE = The window was resized. If necessary reinit your
* driver render context accordingly.
* VO_EVENT_EXPOSE = The window was exposed. Call e.g. flip_frame() to redraw
* the window if the movie is paused.
*/
int vo_w32_check_events(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
MSG msg;
w32->event_flags = 0;
while (PeekMessageW(&msg, 0, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessageW(&msg);
}
if (WinID >= 0) {
BOOL res;
RECT r;
POINT p;
res = GetClientRect(w32->window, &r);
if (res && (r.right != vo->dwidth || r.bottom != vo->dheight)) {
vo->dwidth = r.right; vo->dheight = r.bottom;
w32->event_flags |= VO_EVENT_RESIZE;
}
p.x = 0; p.y = 0;
ClientToScreen(w32->window, &p);
if (p.x != w32->window_x || p.y != w32->window_y) {
w32->window_x = p.x; w32->window_y = p.y;
w32->event_flags |= VO_EVENT_MOVE;
}
res = GetClientRect(WIN_ID_TO_HWND(WinID), &r);
if (res && (r.right != vo->dwidth || r.bottom != vo->dheight))
MoveWindow(w32->window, 0, 0, r.right, r.bottom, FALSE);
if (!IsWindow(WIN_ID_TO_HWND(WinID)))
// Window has probably been closed, e.g. due to program crash
mplayer_put_key(vo->key_fifo, KEY_CLOSE_WIN);
}
return w32->event_flags;
}
static BOOL CALLBACK mon_enum(HMONITOR hmon, HDC hdc, LPRECT r, LPARAM p)
{
struct vo *vo = (void*)p;
struct vo_w32_state *w32 = vo->w32;
// this defaults to the last screen if specified number does not exist
xinerama_x = r->left;
xinerama_y = r->top;
vo->opts->vo_screenwidth = r->right - r->left;
vo->opts->vo_screenheight = r->bottom - r->top;
if (w32->mon_cnt == xinerama_screen)
return FALSE;
w32->mon_cnt++;
return TRUE;
}
/**
* \brief Update screen information.
*
* This function should be called in libvo's "control" callback
* with parameter VOCTRL_UPDATE_SCREENINFO.
* Note that this also enables the new API where geometry and aspect
* calculations are done in video_out.c:config_video_out
*
* Global libvo variables changed:
* xinerama_x
* xinerama_y
* vo_screenwidth
* vo_screenheight
*/
void w32_update_xinerama_info(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
xinerama_x = xinerama_y = 0;
if (xinerama_screen < -1) {
int tmp;
xinerama_x = GetSystemMetrics(SM_XVIRTUALSCREEN);
xinerama_y = GetSystemMetrics(SM_YVIRTUALSCREEN);
tmp = GetSystemMetrics(SM_CXVIRTUALSCREEN);
if (tmp) vo->opts->vo_screenwidth = tmp;
tmp = GetSystemMetrics(SM_CYVIRTUALSCREEN);
if (tmp) vo->opts->vo_screenheight = tmp;
} else if (xinerama_screen == -1) {
MONITORINFO mi;
HMONITOR m = MonitorFromWindow(w32->window, MONITOR_DEFAULTTOPRIMARY);
mi.cbSize = sizeof(mi);
GetMonitorInfoW(m, &mi);
xinerama_x = mi.rcMonitor.left;
xinerama_y = mi.rcMonitor.top;
vo->opts->vo_screenwidth = mi.rcMonitor.right - mi.rcMonitor.left;
vo->opts->vo_screenheight = mi.rcMonitor.bottom - mi.rcMonitor.top;
} else if (xinerama_screen > 0) {
w32->mon_cnt = 0;
EnumDisplayMonitors(NULL, NULL, mon_enum, (LONG_PTR)vo);
}
aspect_save_screenres(vo, vo->opts->vo_screenwidth,
vo->opts->vo_screenheight);
}
static void updateScreenProperties(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
DEVMODE dm;
dm.dmSize = sizeof dm;
dm.dmDriverExtra = 0;
dm.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
if (!EnumDisplaySettings(0, ENUM_CURRENT_SETTINGS, &dm)) {
mp_msg(MSGT_VO, MSGL_ERR,
"vo: win32: unable to enumerate display settings!\n");
return;
}
vo->opts->vo_screenwidth = dm.dmPelsWidth;
vo->opts->vo_screenheight = dm.dmPelsHeight;
w32->depthonscreen = dm.dmBitsPerPel;
w32_update_xinerama_info(vo);
}
static void changeMode(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
DEVMODE dm;
dm.dmSize = sizeof dm;
dm.dmDriverExtra = 0;
dm.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
dm.dmBitsPerPel = w32->depthonscreen;
dm.dmPelsWidth = vo->opts->vo_screenwidth;
dm.dmPelsHeight = vo->opts->vo_screenheight;
if (w32->vm) {
int bestMode = -1;
int bestScore = INT_MAX;
int i;
for (i = 0; EnumDisplaySettings(0, i, &dm); ++i) {
int score = (dm.dmPelsWidth - w32->o_dwidth)
* (dm.dmPelsHeight - w32->o_dheight);
if (dm.dmBitsPerPel != w32->depthonscreen
|| dm.dmPelsWidth < w32->o_dwidth
|| dm.dmPelsHeight < w32->o_dheight)
continue;
if (score < bestScore) {
bestScore = score;
bestMode = i;
}
}
if (bestMode != -1)
EnumDisplaySettings(0, bestMode, &dm);
ChangeDisplaySettings(&dm, CDS_FULLSCREEN);
}
}
static void resetMode(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
if (w32->vm)
ChangeDisplaySettings(0, 0);
}
static DWORD update_style(struct vo *vo, DWORD style)
{
const DWORD NO_FRAME = WS_POPUP;
const DWORD FRAME = WS_OVERLAPPEDWINDOW | WS_SIZEBOX;
style &= ~(NO_FRAME | FRAME);
style |= (vo_border && !vo_fs) ? FRAME : NO_FRAME;
return style;
}
// Update the window title, position, size, and border style from vo_* values.
static int reinit_window_state(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
HWND layer = HWND_NOTOPMOST;
RECT r;
if (WinID >= 0)
return 1;
wchar_t *title = mp_from_utf8(NULL, vo_get_window_title(vo));
SetWindowTextW(w32->window, title);
talloc_free(title);
bool toggle_fs = w32->current_fs != vo_fs;
w32->current_fs = vo_fs;
DWORD style = update_style(vo, GetWindowLong(w32->window, GWL_STYLE));
if (vo_fs || vo->opts->vo_ontop)
layer = HWND_TOPMOST;
// xxx not sure if this can trigger any unwanted messages (WM_MOVE/WM_SIZE)
if (vo_fs) {
changeMode(vo);
while (ShowCursor(0) >= 0) /**/ ;
} else {
resetMode(vo);
while (ShowCursor(1) < 0) /**/ ;
}
updateScreenProperties(vo);
if (vo_fs) {
// Save window position and size when switching to fullscreen.
if (toggle_fs) {
w32->prev_width = vo->dwidth;
w32->prev_height = vo->dheight;
w32->prev_x = w32->window_x;
w32->prev_y = w32->window_y;
mp_msg(MSGT_VO, MSGL_V, "[vo] save window bounds: %d:%d:%d:%d\n",
w32->prev_x, w32->prev_y, w32->prev_width, w32->prev_height);
}
vo->dwidth = vo->opts->vo_screenwidth;
vo->dheight = vo->opts->vo_screenheight;
w32->window_x = xinerama_x;
w32->window_y = xinerama_y;
} else {
if (toggle_fs) {
// Restore window position and size when switching from fullscreen.
mp_msg(MSGT_VO, MSGL_V, "[vo] restore window bounds: %d:%d:%d:%d\n",
w32->prev_x, w32->prev_y, w32->prev_width, w32->prev_height);
vo->dwidth = w32->prev_width;
vo->dheight = w32->prev_height;
w32->window_x = w32->prev_x;
w32->window_y = w32->prev_y;
}
}
r.left = w32->window_x;
r.right = r.left + vo->dwidth;
r.top = w32->window_y;
r.bottom = r.top + vo->dheight;
SetWindowLong(w32->window, GWL_STYLE, style);
add_window_borders(w32->window, &r);
mp_msg(MSGT_VO, MSGL_V, "[vo] reset window bounds: %ld:%ld:%ld:%ld\n",
r.left, r.top, r.right - r.left, r.bottom - r.top);
SetWindowPos(w32->window, layer, r.left, r.top, r.right - r.left,
r.bottom - r.top, SWP_FRAMECHANGED);
// For some reason, moving SWP_SHOWWINDOW to a second call works better
// with wine: returning from fullscreen doesn't cause a bogus resize to
// screen size.
// It's not needed on Windows XP or wine with a virtual desktop.
// It doesn't seem to have any negative effects.
SetWindowPos(w32->window, NULL, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_SHOWWINDOW);
return 1;
}
/**
* \brief Configure and show window on the screen.
*
* This function should be called in libvo's "config" callback.
* It configures a window and shows it on the screen.
*
* \return 1 - Success, 0 - Failure
*/
int vo_w32_config(struct vo *vo, uint32_t width, uint32_t height,
uint32_t flags)
{
struct vo_w32_state *w32 = vo->w32;
PIXELFORMATDESCRIPTOR pfd;
int pf;
HDC vo_hdc = vo_w32_get_dc(vo, w32->window);
memset(&pfd, 0, sizeof pfd);
pfd.nSize = sizeof pfd;
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
if (flags & VOFLAG_STEREO)
pfd.dwFlags |= PFD_STEREO;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 24;
pfd.iLayerType = PFD_MAIN_PLANE;
pf = ChoosePixelFormat(vo_hdc, &pfd);
if (!pf) {
mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to select a valid pixel format!\n");
vo_w32_release_dc(vo, w32->window, vo_hdc);
return 0;
}
SetPixelFormat(vo_hdc, pf, &pfd);
vo_w32_release_dc(vo, w32->window, vo_hdc);
// we already have a fully initialized window, so nothing needs to be done
if (flags & VOFLAG_HIDDEN)
return 1;
bool reset_size = !(w32->o_dwidth == width && w32->o_dheight == height);
w32->o_dwidth = width;
w32->o_dheight = height;
// the desired size is ignored in wid mode, it always matches the window size.
if (WinID < 0) {
if (w32->window_bounds_initialized) {
// restore vo_dwidth/vo_dheight, which are reset against our will
// in vo_config()
RECT r;
GetClientRect(w32->window, &r);
vo->dwidth = r.right;
vo->dheight = r.bottom;
} else {
// first vo_config call; vo_config() will always set vo_dx/dy so
// that the window is centered on the screen, and this is the only
// time we actually want to use vo_dy/dy (this is not sane, and
// video_out.h should provide a function to query the initial
// window position instead)
w32->window_bounds_initialized = true;
reset_size = true;
w32->window_x = w32->prev_x = vo->dx;
w32->window_y = w32->prev_y = vo->dy;
}
if (reset_size) {
w32->prev_width = vo->dwidth = width;
w32->prev_height = vo->dheight = height;
}
}
vo_fs = flags & VOFLAG_FULLSCREEN;
w32->vm = flags & VOFLAG_MODESWITCHING;
return reinit_window_state(vo);
}
/**
* \brief return the name of the selected device if it is indepedant
* \return pointer to string, must be freed.
*/
static wchar_t *get_display_name(void)
{
DISPLAY_DEVICEW disp;
disp.cb = sizeof(disp);
EnumDisplayDevicesW(NULL, vo_adapter_num, &disp, 0);
if (disp.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)
return NULL;
return wcsdup(disp.DeviceName);
}
/**
* \brief Initialize w32_common framework.
*
* The first function that should be called from the w32_common framework.
* It handles window creation on the screen with proper title and attributes.
* It also initializes the framework's internal variables. The function should
* be called after your own preinit initialization and you shouldn't do any
* window management on your own.
*
* Global libvo variables changed:
* vo_w32_window
* vo_screenwidth
* vo_screenheight
*
* \return 1 = Success, 0 = Failure
*/
int vo_w32_init(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
if (w32 && w32->window)
return 1;
if (!w32)
w32 = vo->w32 = talloc_zero(vo, struct vo_w32_state);
HINSTANCE hInstance = GetModuleHandleW(NULL);
HICON mplayerIcon = LoadIconW(hInstance, L"IDI_ICON1");
WNDCLASSEXW wcex = {
.cbSize = sizeof wcex,
.style = CS_OWNDC | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW,
.lpfnWndProc = WndProc,
.hInstance = hInstance,
.hIcon = mplayerIcon,
.hCursor = LoadCursor(0, IDC_ARROW),
.lpszClassName = classname,
.hIconSm = mplayerIcon,
};
if (!RegisterClassExW(&wcex)) {
mp_msg(MSGT_VO, MSGL_ERR,
"vo: win32: unable to register window class!\n");
return 0;
}
if (WinID >= 0) {
RECT r;
GetClientRect(WIN_ID_TO_HWND(WinID), &r);
vo->dwidth = r.right; vo->dheight = r.bottom;
w32->window = CreateWindowExW(WS_EX_NOPARENTNOTIFY, classname,
classname,
WS_CHILD | WS_VISIBLE,
0, 0, vo->dwidth, vo->dheight,
WIN_ID_TO_HWND(WinID), 0, hInstance, vo);
} else {
w32->window = CreateWindowExW(0, classname,
classname,
update_style(vo, 0),
CW_USEDEFAULT, 0, 100, 100,
0, 0, hInstance, vo);
}
if (!w32->window) {
mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to create window!\n");
return 0;
}
if (WinID >= 0)
EnableWindow(w32->window, 0);
w32->dev_hdc = 0;
wchar_t *dev = get_display_name();
if (dev) w32->dev_hdc = CreateDCW(dev, NULL, NULL, NULL);
free(dev);
updateScreenProperties(vo);
mp_msg(MSGT_VO, MSGL_V, "vo: win32: running at %dx%d with depth %d\n",
vo->opts->vo_screenwidth, vo->opts->vo_screenheight,
w32->depthonscreen);
return 1;
}
/**
* \brief Toogle fullscreen / windowed mode.
*
* Should be called on VOCTRL_FULLSCREEN event. The window is
* always resized during this call, so the rendering context
* should be reinitialized with the new dimensions.
* It is unspecified if vo_check_events will create a resize
* event in addition or not.
*/
void vo_w32_fullscreen(struct vo *vo)
{
vo_fs = !vo_fs;
reinit_window_state(vo);
}
/**
* \brief Toogle window border attribute.
*
* Should be called on VOCTRL_BORDER event.
*/
void vo_w32_border(struct vo *vo)
{
vo_border = !vo_border;
reinit_window_state(vo);
}
/**
* \brief Toogle window ontop attribute.
*
* Should be called on VOCTRL_ONTOP event.
*/
void vo_w32_ontop(struct vo *vo)
{
vo->opts->vo_ontop = !vo->opts->vo_ontop;
reinit_window_state(vo);
}
/**
* \brief Uninitialize w32_common framework.
*
* Should be called last in video driver's uninit function. First release
* anything built on top of the created window e.g. rendering context inside
* and call vo_w32_uninit at the end.
*/
void vo_w32_uninit(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
mp_msg(MSGT_VO, MSGL_V, "vo: win32: uninit\n");
if (!w32)
return;
resetMode(vo);
ShowCursor(1);
if (w32->dev_hdc) DeleteDC(w32->dev_hdc);
DestroyWindow(w32->window);
UnregisterClassW(classname, 0);
talloc_free(w32);
vo->w32 = NULL;
}
/**
* \brief get a device context to draw in
*
* \param wnd window the DC should belong to if it makes sense
*/
HDC vo_w32_get_dc(struct vo *vo, HWND wnd)
{
struct vo_w32_state *w32 = vo->w32;
if (w32->dev_hdc)
return w32->dev_hdc;
return GetDC(wnd);
}
/**
* \brief release a device context
*
* \param wnd window the DC probably belongs to
*/
void vo_w32_release_dc(struct vo *vo, HWND wnd, HDC dc)
{
struct vo_w32_state *w32 = vo->w32;
if (w32->dev_hdc)
return;
ReleaseDC(wnd, dc);
}
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