--- /dev/null
+/*****************************************************************************
+ * ios2.m: iOS OpenGL ES 2 provider
+ *****************************************************************************
+ * Copyright (C) 2001-2013 VLC authors and VideoLAN
+ * $Id$
+ *
+ * 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
+ *****************************************************************************/
+
+#import <UIKit/UIKit.h>
+#import <OpenGLES/EAGL.h>
+#import <OpenGLES/ES2/gl.h>
+#import <QuartzCore/QuartzCore.h>
+#import <dlfcn.h>
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_vout_display.h>
+#include <vlc_opengl.h>
+#include <vlc_dialog.h>
+#include "opengl.h"
+
+/**
+ * Forward declarations
+ */
+static int Open (vlc_object_t *);
+static void Close (vlc_object_t *);
+
+static picture_pool_t* PicturePool(vout_display_t *vd, unsigned requested_count);
+static void PictureRender(vout_display_t* vd, picture_t *pic, subpicture_t *subpicture);
+static void PictureDisplay(vout_display_t* vd, picture_t *pic, subpicture_t *subpicture);
+static int Control(vout_display_t* vd, int query, va_list ap);
+
+static void *OurGetProcAddress(vlc_gl_t *, const char *);
+
+static int OpenglESClean(vlc_gl_t* gl);
+static void OpenglESSwap(vlc_gl_t* gl);
+
+/**
+ * Module declaration
+ */
+vlc_module_begin ()
+ set_shortname ("iOS vout")
+ set_description (N_("iOS OpenGL video output"))
+ set_category (CAT_VIDEO)
+ set_subcategory (SUBCAT_VIDEO_VOUT)
+ set_capability ("vout display", 300)
+ set_callbacks (Open, Close)
+
+ add_shortcut ("vout_ios2")
+vlc_module_end ()
+
+@interface VLCOpenGLES2VideoView : UIView
+{
+ vout_display_t *_voutDisplay;
+ EAGLContext *_eaglContext;
+ GLuint _renderBuffer;
+ GLuint _frameBuffer;
+
+ BOOL _bufferNeedReset;
+}
+@property (readwrite) vout_display_t* voutDisplay;
+@property (readonly) EAGLContext* eaglContext;
+
+- (void)createBuffers;
+- (void)destroyBuffers;
+- (void)resetBuffers;
+
+@end
+
+
+struct vout_display_sys_t
+{
+ VLCOpenGLES2VideoView *glESView;
+ UIView* viewContainer;
+
+ vlc_gl_t gl;
+ vout_display_opengl_t *vgl;
+
+ picture_pool_t *picturePool;
+ picture_t *current;
+ bool has_first_frame;
+
+ vout_display_place_t place;
+};
+
+
+static void *OurGetProcAddress(vlc_gl_t *gl, const char *name)
+{
+ VLC_UNUSED(gl);
+
+ return dlsym(RTLD_DEFAULT, name);
+}
+
+static int Open(vlc_object_t *this)
+{
+ vout_display_t *vd = (vout_display_t *)this;
+ vout_display_sys_t *sys = calloc (1, sizeof(*sys));
+ NSAutoreleasePool *autoreleasePool = nil;
+
+ if (!sys)
+ return VLC_ENOMEM;
+
+ vd->sys = sys;
+ sys->picturePool = NULL;
+ sys->gl.sys = NULL;
+
+ autoreleasePool = [[NSAutoreleasePool alloc] init];
+
+ /* get the object we will draw into */
+ UIView* viewContainer = var_CreateGetAddress (vd, "drawable-nsobject");
+ if (!viewContainer || ![viewContainer isKindOfClass:[UIView class]])
+ goto bailout;
+
+ vout_display_DeleteWindow (vd, NULL);
+
+ /* This will be released in Close(), on
+ * main thread, after we are done using it. */
+ sys->viewContainer = [viewContainer retain];
+
+ /* setup the actual OpenGL ES view */
+ sys->glESView = [[VLCOpenGLES2VideoView alloc] initWithFrame:[viewContainer bounds]];
+
+ if (!sys->glESView)
+ goto bailout;
+
+ [sys->glESView setVoutDisplay:vd];
+
+ [sys->viewContainer performSelectorOnMainThread:@selector(addSubview:) withObject:sys->glESView waitUntilDone:YES];
+
+ /* Initialize common OpenGL video display */
+ sys->gl.lock = OpenglESClean;
+ sys->gl.unlock = nil;
+ sys->gl.swap = OpenglESSwap;
+ sys->gl.getProcAddress = OurGetProcAddress;
+ sys->gl.sys = sys;
+ const vlc_fourcc_t *subpicture_chromas;
+ video_format_t fmt = vd->fmt;
+
+ sys->vgl = vout_display_opengl_New (&vd->fmt, &subpicture_chromas, &sys->gl);
+ if (!sys->vgl) {
+ sys->gl.sys = NULL;
+ goto bailout;
+ }
+
+ /* */
+ vout_display_info_t info = vd->info;
+ info.has_pictures_invalid = false;
+ info.has_event_thread = true;
+ info.subpicture_chromas = subpicture_chromas;
+
+ /* Setup vout_display_t once everything is fine */
+ vd->info = info;
+
+ vd->pool = PicturePool;
+ vd->prepare = PictureRender;
+ vd->display = PictureDisplay;
+ vd->control = Control;
+
+ /* */
+ [sys->glESView performSelectorOnMainThread:@selector(reshape) withObject:nil waitUntilDone:YES];
+
+ [autoreleasePool release];
+ return VLC_SUCCESS;
+
+bailout:
+ [autoreleasePool release];
+ Close(this);
+ return VLC_EGENERIC;
+}
+
+void Close (vlc_object_t *this)
+{
+ vout_display_t *vd = (vout_display_t *)this;
+ vout_display_sys_t *sys = vd->sys;
+
+ [sys->glESView setVoutDisplay:nil];
+
+ var_Destroy (vd, "drawable-nsobject");
+ [sys->viewContainer performSelectorOnMainThread:@selector(release) withObject:nil waitUntilDone:NO];
+ [sys->glESView performSelectorOnMainThread:@selector(removeFromSuperview) withObject:nil waitUntilDone:NO];
+
+ if (sys->gl.sys != NULL) {
+ msg_Dbg(this, "deleting display");
+ vout_display_opengl_Delete(sys->vgl);
+ }
+
+ [sys->glESView release];
+
+ free(sys);
+}
+
+/*****************************************************************************
+ * vout display callbacks
+ *****************************************************************************/
+
+static int Control(vout_display_t *vd, int query, va_list ap)
+{
+ vout_display_sys_t *sys = vd->sys;
+
+ switch (query)
+ {
+ case VOUT_DISPLAY_CHANGE_FULLSCREEN:
+ case VOUT_DISPLAY_CHANGE_WINDOW_STATE:
+ case VOUT_DISPLAY_HIDE_MOUSE:
+ return VLC_SUCCESS;
+ case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED:
+ case VOUT_DISPLAY_CHANGE_ZOOM:
+ case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:
+ case VOUT_DISPLAY_CHANGE_SOURCE_CROP:
+ case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:
+ {
+ if (!vd->sys)
+ return VLC_EGENERIC;
+
+ NSAutoreleasePool * autoreleasePool = [[NSAutoreleasePool alloc] init];
+
+ const vout_display_cfg_t *cfg;
+ const video_format_t *source;
+ bool is_forced = false;
+
+ if (query == VOUT_DISPLAY_CHANGE_SOURCE_ASPECT || query == VOUT_DISPLAY_CHANGE_SOURCE_CROP) {
+ source = (const video_format_t *)va_arg(ap, const video_format_t *);
+ cfg = vd->cfg;
+ } else {
+ source = &vd->source;
+ cfg = (const vout_display_cfg_t*)va_arg(ap, const vout_display_cfg_t *);
+ if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE)
+ is_forced = (bool)va_arg(ap, int);
+ }
+
+ if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE && is_forced
+ && (cfg->display.width != vd->cfg->display.width
+ || cfg->display.height != vd->cfg->display.height))
+ return VLC_EGENERIC;
+
+ /* we always use our current frame here, because we have some size constraints
+ in the ui vout provider */
+ vout_display_cfg_t cfg_tmp = *cfg;
+ CGRect bounds;
+ bounds = [sys->glESView bounds];
+
+ /* on HiDPI displays, the point bounds don't equal the actual pixel based bounds */
+ CGFloat scaleFactor = sys->glESView.contentScaleFactor;
+ cfg_tmp.display.width = bounds.size.width * scaleFactor;
+ cfg_tmp.display.height = bounds.size.height * scaleFactor;
+
+ vout_display_place_t place;
+ vout_display_PlacePicture(&place, source, &cfg_tmp, false);
+ @synchronized (sys->glESView) {
+ sys->place = place;
+ }
+
+ /* For resize, we call glViewport in reshape and not here.
+ This has the positive side effect that we avoid erratic sizing as we animate every resize. */
+ if (query != VOUT_DISPLAY_CHANGE_DISPLAY_SIZE)
+ // x / y are top left corner, but we need the lower left one
+ glViewport(place.x, cfg_tmp.display.height - (place.y + place.height), place.width, place.height);
+
+ [autoreleasePool release];
+ return VLC_SUCCESS;
+ }
+
+ case VOUT_DISPLAY_GET_OPENGL:
+ {
+ vlc_gl_t **gl = va_arg(ap, vlc_gl_t **);
+ *gl = &sys->gl;
+ return VLC_SUCCESS;
+ }
+
+ case VOUT_DISPLAY_RESET_PICTURES:
+ assert (0);
+ default:
+ msg_Err(vd, "Unknown request %i in iOS ES 2 vout display", query);
+ return VLC_EGENERIC;
+ }
+}
+
+static void PictureDisplay(vout_display_t *vd, picture_t *pic, subpicture_t *subpicture)
+{
+ vout_display_sys_t *sys = vd->sys;
+ sys->has_first_frame = true;
+ vout_display_opengl_Display(sys->vgl, &vd->source);
+
+ picture_Release(pic);
+
+ if (subpicture)
+ subpicture_Delete(subpicture);
+}
+
+static void PictureRender(vout_display_t *vd, picture_t *pic, subpicture_t *subpicture)
+{
+
+ vout_display_sys_t *sys = vd->sys;
+
+ vout_display_opengl_Prepare(sys->vgl, pic, subpicture);
+}
+
+static picture_pool_t *PicturePool(vout_display_t *vd, unsigned requested_count)
+{
+ vout_display_sys_t *sys = vd->sys;
+
+ if (!sys->picturePool)
+ sys->picturePool = vout_display_opengl_GetPool(sys->vgl, requested_count);
+ assert(sys->picturePool);
+ return sys->picturePool;
+}
+
+/*****************************************************************************
+ * vout opengl callbacks
+ *****************************************************************************/
+static int OpenglESClean(vlc_gl_t *gl)
+{
+ vout_display_sys_t *sys = (vout_display_sys_t *)gl->sys;
+ [sys->glESView resetBuffers];
+ return 0;
+}
+
+static void OpenglESSwap(vlc_gl_t *gl)
+{
+ vout_display_sys_t *sys = (vout_display_sys_t *)gl->sys;
+ [[sys->glESView eaglContext] presentRenderbuffer:GL_RENDERBUFFER];
+}
+
+/*****************************************************************************
+ * Our UIView object
+ *****************************************************************************/
+@implementation VLCOpenGLES2VideoView
+@synthesize voutDisplay = _voutDisplay, eaglContext = _eaglContext;
+
++ (Class)layerClass
+{
+ return [CAEAGLLayer class];
+}
+
+- (id)initWithFrame:(CGRect)frame
+{
+ self = [super initWithFrame:frame]; // perform selector on main thread?
+
+ if (!self)
+ return nil;
+
+ CAEAGLLayer * layer = (CAEAGLLayer *)self.layer;
+ layer.drawableProperties = [NSDictionary dictionaryWithObject:kEAGLColorFormatRGBA8 forKey: kEAGLDrawablePropertyColorFormat];
+ layer.opaque = YES;
+
+ _eaglContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
+ if (!_eaglContext)
+ return nil;
+ [EAGLContext setCurrentContext:_eaglContext];
+
+ [self performSelectorOnMainThread:@selector(createBuffers) withObject:nil waitUntilDone:YES];
+ [self performSelectorOnMainThread:@selector(reshape) withObject:nil waitUntilDone:NO];
+ [self setAutoresizingMask: UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight];
+
+ return self;
+}
+
+- (void)dealloc
+{
+ [_eaglContext release];
+ [super dealloc];
+}
+
+/* we don't get the correct scale factor if we don't overwrite this method */
+- (void)drawRect:(CGRect) rect
+{
+ [super drawRect:rect];
+}
+
+- (void)createBuffers
+{
+ /* make sure the current context is us */
+ [EAGLContext setCurrentContext:_eaglContext];
+
+ /* create render buffer */
+ glGenRenderbuffers(1, &_renderBuffer);
+ glBindRenderbuffer(GL_RENDERBUFFER, _renderBuffer);
+
+ /* create frame buffer */
+ glGenFramebuffers(1, &_frameBuffer);
+ glBindFramebuffer(GL_FRAMEBUFFER, _frameBuffer);
+
+ /* allocate storage for the pixels we are going to to draw to */
+ [_eaglContext renderbufferStorage:GL_RENDERBUFFER fromDrawable:(id<EAGLDrawable>)self.layer];
+
+ /* bind render buffer to frame buffer */
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, _renderBuffer);
+
+ /* make sure that our shape is ok */
+ [self performSelectorOnMainThread:@selector(reshape) withObject:nil waitUntilDone:NO];
+}
+
+- (void)destroyBuffers
+{
+ /* re-set current context */
+ [EAGLContext setCurrentContext:_eaglContext];
+
+ /* clear frame buffer */
+ glDeleteFramebuffers(1, &_frameBuffer);
+ _frameBuffer = 0;
+
+ /* clear render buffer */
+ glDeleteRenderbuffers(1, &_renderBuffer);
+ _renderBuffer = 0;
+}
+
+- (void)resetBuffers
+{
+ if (_bufferNeedReset) {
+ NSLog(@"actually resetting buffers");
+ [self destroyBuffers];
+ [self createBuffers];
+ _bufferNeedReset = NO;
+ }
+}
+
+- (void)layoutSubviews
+{
+ NSLog(@"layoutSubviews");
+ /* this method is called as soon as we are resized.
+ * so set a variable to re-create our buffers on the next clean event */
+ _bufferNeedReset = YES;
+}
+
+/**
+ * Method called by Cocoa when the view is resized.
+ */
+- (void)reshape
+{
+ assert([[NSThread currentThread] isMainThread]);
+
+ CGRect bounds;
+ bounds = [self bounds];
+
+ vout_display_place_t place;
+
+ @synchronized(self) {
+ if (_voutDisplay) {
+ vout_display_cfg_t cfg_tmp = *(_voutDisplay->cfg);
+ CGFloat scaleFactor = self.contentScaleFactor;
+
+ cfg_tmp.display.width = bounds.size.width * scaleFactor;
+ cfg_tmp.display.height = bounds.size.height * scaleFactor;
+
+ vout_display_PlacePicture(&place, &_voutDisplay->source, &cfg_tmp, false);
+ _voutDisplay->sys->place = place;
+ vout_display_SendEventDisplaySize(_voutDisplay, bounds.size.width * scaleFactor, bounds.size.height * scaleFactor, _voutDisplay->cfg->is_fullscreen);
+ }
+ }
+
+ // x / y are top left corner, but we need the lower left one
+ glViewport(place.x, place.y, place.width, place.height);
+}
+
+- (void)updateConstraints
+{
+ [self reshape];
+ [super updateConstraints];
+}
+
+- (BOOL)isOpaque
+{
+ return YES;
+}
+
+- (BOOL)acceptsFirstResponder
+{
+ return YES;
+}
+
+@end
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