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/*****************************************************************************
* macosx.m: MacOS X OpenGL provider
*****************************************************************************
* Copyright (C) 2001-2013 VLC authors and VideoLAN
*
* Authors: Derk-Jan Hartman <hartman at videolan dot org>
* Eric Petit <titer@m0k.org>
* Benjamin Pracht <bigben at videolan dot org>
* Damien Fouilleul <damienf at videolan dot org>
* Pierre d'Herbemont <pdherbemont at videolan dot org>
* Felix Paul Kühne <fkuehne at videolan dot org>
* David Fuhrmann <david dot fuhrmann at googlemail dot com>
* Rémi Denis-Courmont
* Juho Vähä-Herttua <juhovh at iki dot fi>
* Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
#
include "config.h"
#
endif
#
import <Cocoa/Cocoa.h>
#
import <OpenGL/OpenGL.h>
#
import <dlfcn.h>
#
include <vlc_common.h>
#
include <vlc_plugin.h>
#
include <vlc_vout_display.h>
#
include <vlc_opengl.h>
#
include <vlc_dialog.h>
#
include "opengl/renderer.h"
#
include "opengl/vout_helper.h"
/**
* Forward declarations
*/
static int
Open(vout_display_t
*vd,
video_format_t
*fmt, vlc_video_context *context);
static void
Close(vout_display_t
*vd);
static void PictureRender (vout_display_t
*vd, picture_t *pic, const vlc_render_subpicture *subpicture,
vlc_tick_t date);
static void PictureDisplay (vout_display_t
*vd, picture_t *pic);
static void UpdatePlace (vout_display_t
*vd, const vout_display_cfg_t *cfg);
static void
*OurGetProcAddress(vlc_gl_t *, const char *);
static int OpenglLock (vlc_gl_t
*gl);
static void OpenglUnlock (vlc_gl_t
*gl);
static void OpenglSwap (vlc_gl_t
*gl);
/**
* Module declaration
*/
vlc_module_begin ()
/* Will be loaded even without interface module. see voutgl.m */
set_shortname (
"Mac OS X")
set_description (N_(
"Mac OS X OpenGL video output"))
set_subcategory (SUBCAT_VIDEO_VOUT)
set_callback_display(
Open,
290)
add_shortcut (
"macosx",
"vout_macosx")
add_glopts ()
add_opengl_submodule_renderer()
vlc_module_end ()
/**
* Obj-C protocol declaration that drawable-nsobject should follow
*/
@protocol VLCVideoViewEmbedding <NSObject>
- (void)addVoutSubview:(NSView
*)view;
- (void)removeVoutSubview:(NSView
*)view;
@end
@
interface VLCOpenGLVideoView : NSOpenGLView
{
vout_display_t
*vd;
}
- (void)setVoutDisplay:(vout_display_t
*)vd;
- (void)setVoutFlushing:(BOOL)flushing;
- (void)render;
@end
typedef struct vout_display_sys_t
{
VLCOpenGLVideoView
*glView;
id<VLCVideoViewEmbedding> container;
vlc_gl_t
*gl;
vout_display_opengl_t
*vgl;
picture_t
*current;
bool has_first_frame;
vout_display_cfg_t cfg;
vout_display_place_t place;
} vout_display_sys_t;
struct gl_sys
{
CGLContextObj locked_ctx;
VLCOpenGLVideoView
*glView;
};
static void
*OurGetProcAddress(vlc_gl_t *gl, const char *name)
{
VLC_UNUSED(gl);
return dlsym(RTLD_DEFAULT, name);
}
static int SetViewpoint(vout_display_t
*vd, const vlc_viewpoint_t *vp)
{
vout_display_sys_t
*sys = vd->sys;
return vout_display_opengl_SetViewpoint (sys->vgl, vp);
}
static int PlacementChanged(vout_display_t
*vd, const vout_display_place_t *place)
{
vout_display_sys_t
*sys = vd->sys;
VLC_UNUSED(place);
if (!sys)
return VLC_EGENERIC;
@autoreleasepool {
@synchronized(sys->glView) {
vout_display_cfg_t cfg;
cfg =
*vd->cfg;
cfg.display.width = sys->cfg.display.width;
cfg.display.height = sys->cfg.display.height;
sys->cfg = cfg;
UpdatePlace(vd, &cfg);
}
return VLC_SUCCESS;
}
}
static int AspectChanged(vout_display_t
*vd, const video_format_t *source)
{
vout_display_sys_t
*sys = vd->sys;
VLC_UNUSED(source);
return PlacementChanged(vd, NULL);
}
static const struct vlc_display_operations ops = {
.
close =
Close,
.prepare = PictureRender,
.display = PictureDisplay,
.set_viewpoint = SetViewpoint,
.video_place_changed = PlacementChanged,
.set_source_aspect = AspectChanged,
.set_source_crop = AspectChanged,
};
static int
Open (vout_display_t
*vd,
video_format_t
*fmt, vlc_video_context *context)
{
if (vd->cfg->
window->
type != VLC_WINDOW_TYPE_NSOBJECT)
return VLC_EGENERIC;
vout_display_sys_t
*sys = calloc(1, sizeof(*sys));
if (!sys)
return VLC_ENOMEM;
sys->cfg =
*vd->cfg;
sys->has_first_frame = false;
sys->current = NULL;
sys->vgl = NULL;
sys->gl = NULL;
@autoreleasepool {
if (!CGDisplayUsesOpenGLAcceleration (kCGDirectMainDisplay))
msg_Err (vd,
"no OpenGL hardware acceleration found. this can lead to slow output and unexpected results");
vd->sys = sys;
/* Get the drawable object */
id container = (__bridge id)vd->cfg->
window->handle.nsobject;
assert(container != nil);
/* This will be released in Close(), on
* main thread, after we are done using it. */
sys->container = container;
/* Get our main view*/
dispatch_sync(dispatch_get_main_queue(), ^{
sys->glView = [[VLCOpenGLVideoView alloc] init];
});
if (!sys->glView) {
msg_Err(vd,
"Initialization of open gl view failed");
goto error;
}
[sys->glView setVoutDisplay:vd];
/* We don't wait, that means that we'll have to be careful about releasing
* container.
* That's why we'll release on main thread in Close(). */
if ([container respondsToSelector:@selector(addVoutSubview:)]) {
dispatch_async(dispatch_get_main_queue(), ^{
[container addVoutSubview: sys->glView];
});
}
else if ([container isKindOfClass:[NSView
class]]) {
dispatch_async(dispatch_get_main_queue(), ^{
NSView
*parentView = container;
[parentView addSubview:sys->glView];
[sys->glView setFrame:[parentView bounds]];
});
}
else {
msg_Err(vd,
"Invalid drawable-nsobject object. drawable-nsobject must either be an NSView or comply to the @protocol VLCVideoViewEmbedding.");
goto error;
}
/* Initialize common OpenGL video display */
sys->gl = vlc_object_create(vd, sizeof(
*sys->gl));
if( unlikely( !sys->gl ) )
goto error;
struct gl_sys
*glsys = sys->gl->sys = malloc(sizeof(struct gl_sys));
if( unlikely( !sys->gl->sys ) )
{
vlc_object_delete(sys->gl);
goto error;
}
glsys->locked_ctx = NULL;
glsys->glView = sys->glView;
static const struct vlc_gl_operations gl_ops =
{
.make_current = OpenglLock,
.release_current = OpenglUnlock,
.swap = OpenglSwap,
.get_proc_address = OurGetProcAddress,
};
sys->gl->ops = &gl_ops;
sys->gl->api_type = VLC_OPENGL;
const vlc_fourcc_t
*subpicture_chromas;
if (vlc_gl_MakeCurrent(sys->gl) != VLC_SUCCESS)
{
msg_Err(vd,
"Can't attach gl context");
goto error;
}
sys->vgl = vout_display_opengl_New (fmt, &subpicture_chromas, sys->gl,
&vd->cfg->viewpoint, context);
vlc_gl_ReleaseCurrent(sys->gl);
if (!sys->vgl) {
msg_Err(vd,
"Error while initializing opengl display.");
goto error;
}
/* Setup vout_display_t once everything is fine */
vd->info.subpicture_chromas = subpicture_chromas;
vd->ops = &ops;
return VLC_SUCCESS;
error:
Close(vd);
return VLC_EGENERIC;
}
}
static void
Close(vout_display_t
*vd)
{
vout_display_sys_t
*sys = vd->sys;
@autoreleasepool {
[sys->glView setVoutDisplay:nil];
var_Destroy (vd,
"drawable-nsobject");
if (sys->vgl != NULL)
{
vlc_gl_MakeCurrent(sys->gl);
vout_display_opengl_Delete (sys->vgl);
vlc_gl_ReleaseCurrent(sys->gl);
}
if (sys->gl != NULL)
{
assert(((struct gl_sys
*)sys->gl->sys)->locked_ctx == NULL);
free(sys->gl->sys);
vlc_object_delete(sys->gl);
}
dispatch_async(dispatch_get_main_queue(), ^{
if ([sys->container respondsToSelector:@selector(removeVoutSubview:)]) {
/* This will retain sys->glView */
[sys->container removeVoutSubview:sys->glView];
}
/* release on main thread as explained in Open() */
sys->container = nil;
[sys->glView removeFromSuperview];
sys->glView = nil;
free(sys);
});
}
}
/*****************************************************************************
* vout display callbacks
*****************************************************************************/
static void PictureRender (vout_display_t
*vd, picture_t *pic,
const vlc_render_subpicture
*subpicture,
vlc_tick_t date)
{
VLC_UNUSED(date);
vout_display_sys_t
*sys = vd->sys;
if (vlc_gl_MakeCurrent(sys->gl) == VLC_SUCCESS)
{
vout_display_opengl_Prepare (sys->vgl, pic, subpicture);
vlc_gl_ReleaseCurrent(sys->gl);
}
}
static void PictureDisplay (vout_display_t
*vd, picture_t *pic)
{
vout_display_sys_t
*sys = vd->sys;
(void)pic;
@synchronized(sys->glView)
{
[sys->glView setVoutFlushing:YES];
if (vlc_gl_MakeCurrent(sys->gl) == VLC_SUCCESS)
{
[sys->glView render];
vlc_gl_ReleaseCurrent(sys->gl);
}
[sys->glView setVoutFlushing:NO];
sys->has_first_frame = true;
}
}
static void UpdatePlace (vout_display_t
*vd, const vout_display_cfg_t *cfg)
{
vout_display_sys_t
*sys = vd->sys;
vout_display_place_t place;
/* We never receive resize from the core, so provide the size ourselves */
vout_display_PlacePicture(&place, vd->source, &cfg->display);
/* Reverse vertical alignment as the GL tex are Y inverted */
place.y = cfg->display.height - (place.y + place.height);
sys->place = place;
}
/*****************************************************************************
* vout opengl callbacks
*****************************************************************************/
static int OpenglLock (vlc_gl_t
*gl)
{
struct gl_sys
*sys = gl->sys;
if (![sys->glView respondsToSelector:@selector(openGLContext)])
return
1;
assert(sys->locked_ctx == NULL);
NSOpenGLContext
*context = [sys->glView openGLContext];
CGLContextObj cglcntx = [context CGLContextObj];
CGLError err = CGLLockContext (cglcntx);
if (kCGLNoError == err) {
sys->locked_ctx = cglcntx;
[context makeCurrentContext];
return
0;
}
return
1;
}
static void OpenglUnlock (vlc_gl_t
*gl)
{
struct gl_sys
*sys = gl->sys;
CGLUnlockContext (sys->locked_ctx);
sys->locked_ctx = NULL;
}
static void OpenglSwap (vlc_gl_t
*gl)
{
struct gl_sys
*sys = gl->sys;
[[sys->glView openGLContext] flushBuffer];
}
/*****************************************************************************
* Our NSView object
*****************************************************************************/
@
implementation VLCOpenGLVideoView
#
define VLCAssertMainThread() assert([[NSThread currentThread] isMainThread])
/**
* Gets called by the Open() method.
*/
- (id)init
{
VLCAssertMainThread();
/* Warning - this may be called on non main thread */
NSOpenGLPixelFormatAttribute attribs[] =
{
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAAccelerated,
NSOpenGLPFANoRecovery,
NSOpenGLPFAColorSize,
24,
NSOpenGLPFAAlphaSize,
8,
NSOpenGLPFADepthSize,
24,
NSOpenGLPFAAllowOfflineRenderers,
0
};
NSOpenGLPixelFormat
*fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
if (!fmt)
return nil;
self = [super initWithFrame:NSMakeRect(
0,
0,
10,
10) pixelFormat:fmt];
if (!self)
return nil;
/* enable HiDPI support */
[self setWantsBestResolutionOpenGLSurface:YES];
/* request our screen's HDR mode (introduced in OS X 10.11) */
#pragma clang diagnostic push
#pragma clang diagnostic ignored
"-Wpartial-availability"
if ([self respondsToSelector:@selector(setWantsExtendedDynamicRangeOpenGLSurface:)
]) {
[self setWantsExtendedDynamicRangeOpenGLSurface:YES];
}
#pragma clang diagnostic pop
/* Swap buffers only during the vertical retrace of the monitor.
http://developer.apple.com/documentation/GraphicsImaging/
Conceptual/OpenGL/chap5/chapter_5_section_44.html */
GLint params[] = { 1 };
CGLSetParameter ([[self openGLContext] CGLContextObj], kCGLCPSwapInterval, params);
[NSNotificationCenter.defaultCenter addObserverForName:NSApplicationDidChangeScreenParametersNotification
object:NSApplication.sharedApplication
queue:nil
usingBlock:^(NSNotification *notification) {
[self performSelectorOnMainThread:@selector(reshape)
withObject:nil
waitUntilDone:NO];
}];
[self setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
return self;
}
- (void)dealloc
{
[NSNotificationCenter.defaultCenter removeObserver:self];
}
/**
* Gets called by the Close and Open methods.
* (Non main thread).
*/
- (void)setVoutDisplay:(vout_display_t *)aVd
{
@synchronized(self) {
vd = aVd;
}
}
/**
* Gets called when the vout will acquire the lock and flush.
* (Non main thread).
*/
- (void)setVoutFlushing:(BOOL)flushing
{
if (!flushing)
return;
}
/**
* Local method that locks the gl context.
*/
- (BOOL)lockgl
{
VLCAssertMainThread();
NSOpenGLContext *context = [self openGLContext];
CGLError err = CGLLockContext ([context CGLContextObj]);
if (err == kCGLNoError)
[context makeCurrentContext];
return err == kCGLNoError;
}
/**
* Local method that unlocks the gl context.
*/
- (void)unlockgl
{
VLCAssertMainThread();
CGLUnlockContext ([[self openGLContext] CGLContextObj]);
}
/**
* Local method that force a rendering of a frame.
* This will get called if Cocoa forces us to redraw (via -drawRect).
*
* NOTE: must be called in a @synchronized() block with sys->glView or self.
*/
- (void)render
{
if (!vd) {
glClear (GL_COLOR_BUFFER_BIT);
return;
}
vout_display_sys_t *sys = vd->sys;
vout_display_opengl_Viewport(sys->vgl, sys->place.x, sys->place.y,
sys->place.width, sys->place.height);
vout_display_opengl_SetOutputSize(sys->vgl, sys->cfg.display.width, sys->cfg.display.height);
if (sys->has_first_frame)
vout_display_opengl_Display (sys->vgl);
else
glClear (GL_COLOR_BUFFER_BIT);
vlc_gl_Swap(sys->gl);
}
/**
* Method called by Cocoa when the view is resized.
*/
- (void)reshape
{
VLCAssertMainThread();
/* on HiDPI displays, the point bounds don't equal the actual pixel based bounds */
NSRect bounds = [self convertRectToBacking:[self bounds]];
@synchronized(self) {
if (vd == NULL) return;
vout_display_sys_t *sys = vd->sys;
sys->cfg.display.width = bounds.size.width;
sys->cfg.display.height = bounds.size.height;
UpdatePlace(vd, &sys->cfg);
}
[super reshape];
}
/**
* Method called by Cocoa when the view is resized or the location has changed.
* We just need to make sure we are locking here.
*/
- (void)update
{
VLCAssertMainThread();
BOOL success = [self lockgl];
if (!success)
return;
[super update];
[self unlockgl];
}
/**
* Method called by Cocoa to force redraw.
*/
- (void)drawRect:(NSRect) rect
{
VLCAssertMainThread();
@synchronized(self) {
BOOL success = [self lockgl];
if (!success)
return;
[self render];
[[self openGLContext] flushBuffer];
[self unlockgl];
}
}
- (void)renewGState
{
// Comment take from Apple GLEssentials sample code:
// https://developer.apple.com/library/content/samplecode/GLEssentials
//
// OpenGL rendering is not synchronous with other rendering on the OSX.
// Therefore, call disableScreenUpdatesUntilFlush so the window server
// doesn't render non-OpenGL content in the window asynchronously from
// OpenGL content, which could cause flickering. (non-OpenGL content
// includes the title bar and drawing done by the app with other APIs)
// In macOS 10.13 and later, window updates are automatically batched
// together and this no longer needs to be called (effectively a no-op)
[[self window] disableScreenUpdatesUntilFlush];
[super renewGState];
}
- (BOOL)isOpaque
{
return YES;
}
#pragma mark -
#pragma mark Mouse handling
#warning Missing mouse handling, must be implemented in Vout Window
- (BOOL)acceptsFirstResponder
{
return YES;
}
- (BOOL)mouseDownCanMoveWindow
{
return YES;
}
@end