New AVFoundation video capture module for Mac OS X
authorMichael Feurstein <michael.feurstein@gmail.com>
Wed, 17 Apr 2013 16:51:48 +0000 (16:51 +0000)
committerFelix Paul Kühne <fkuehne@videolan.org>
Thu, 18 Apr 2013 10:41:43 +0000 (12:41 +0200)
This module lets you capture video devices with the AVFoundation framework on Mac OS X.
It is an upgrade of the qtcapture module. Currently no GUI integration yet.
Only available via command line

Usage: avcapture://

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>
configure.ac
extras/package/macosx/configure.sh
extras/package/macosx/vlc.xcodeproj/project.pbxproj
modules/access/Modules.am
modules/access/avcapture.m [new file with mode: 0644]

index 3a5ac9c..61f0613 100644 (file)
@@ -1923,6 +1923,16 @@ then
 fi
 AM_CONDITIONAL(HAVE_QTKIT, [test "${SYS}" = "darwin" -a "x${enable_macosx_qtkit}" != "xno"])
 
+dnl
+dnl AVFoundation
+AC_ARG_ENABLE(macosx-avfoundation,
+  [  --enable-macosx-avfoundation Mac OS X avcapture (video) module (default enabled on Mac OS X)])
+if test "x${enable_macosx_avfoundation}" != "xno" &&
+  (test "${SYS}" = "darwin" || test "${enable_macosx_avfoundation}" = "yes")
+then
+  VLC_ADD_PLUGIN([avcapture])
+fi
+AM_CONDITIONAL(HAVE_AVFOUNDATION, [test "${SYS}" = "darwin" -a "x${enable_macosx_avfoundation}" != "xno"])
 
 dnl
 dnl  Demux plugins
@@ -3750,7 +3760,7 @@ then
   VLC_ADD_OBJCFLAGS([macosx], [-fobjc-exceptions] )
   VLC_ADD_PLUGIN([macosx])
 
-  VLC_ADD_LIBS([macosx], [-Wl,-framework,QTKit -Wl,-framework,IOKit -Wl,-framework,AddressBook -Wl,-framework,WebKit -Wl,-framework,CoreAudio -Wl,-framework,SystemConfiguration -Wl,-framework,ScriptingBridge])
+  VLC_ADD_LIBS([macosx], [-Wl,-framework,QTKit -Wl,-framework,AVFoundation -Wl,-framework,IOKit -Wl,-framework,AddressBook -Wl,-framework,WebKit -Wl,-framework,CoreAudio -Wl,-framework,SystemConfiguration -Wl,-framework,ScriptingBridge])
 
   if test ! -d ${CONTRIB_DIR}/Sparkle.framework
   then
index 64d51af..e2c8838 100755 (executable)
@@ -34,6 +34,7 @@ OPTIONS="
         --enable-macosx-audio
         --enable-macosx-eyetv
         --enable-macosx-qtkit
+        --enable-macosx-avfoundation
         --enable-macosx-vout
         --disable-skins2
         --disable-xcb
index 44c0d2d..c4f3950 100644 (file)
                CCDB535D13E97D3500A1782F /* dropzone-background.png in Resources */ = {isa = PBXBuildFile; fileRef = CCDB535C13E97D3500A1782F /* dropzone-background.png */; };
                CCE8BAC4160615D9006741FB /* effects-one-button-pressed.png in Resources */ = {isa = PBXBuildFile; fileRef = CCE8BAC2160615D9006741FB /* effects-one-button-pressed.png */; };
                CCE8BAC5160615D9006741FB /* effects-one-button-pressed@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = CCE8BAC3160615D9006741FB /* effects-one-button-pressed@2x.png */; };
+               DCC8017A16FCA0DA007FE736 /* AVFoundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = DCC8017916FCA0DA007FE736 /* AVFoundation.framework */; };
                E0FB95CE1615B6DF0005069A /* DetachedVideoWindow.xib in Resources */ = {isa = PBXBuildFile; fileRef = E0FB95CC1615B6DF0005069A /* DetachedVideoWindow.xib */; };
 /* End PBXBuildFile section */
 
                DC1A176914E2778A001477C6 /* qtsound.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = qtsound.m; path = ../../../modules/access/qtsound.m; sourceTree = "<group>"; };
                DC769AB7085DF0DB001A838D /* wizard.m */ = {isa = PBXFileReference; fileEncoding = 5; indentWidth = 4; lastKnownFileType = sourcecode.c.objc; name = wizard.m; path = ../../../modules/gui/macosx/wizard.m; sourceTree = SOURCE_ROOT; tabWidth = 4; usesTabs = 0; };
                DC769AB8085DF0DB001A838D /* wizard.h */ = {isa = PBXFileReference; fileEncoding = 5; lastKnownFileType = sourcecode.c.h; name = wizard.h; path = ../../../modules/gui/macosx/wizard.h; sourceTree = SOURCE_ROOT; };
+               DCC8017816FCA036007FE736 /* avcapture.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = avcapture.m; path = ../../../modules/access/avcapture.m; sourceTree = "<group>"; };
+               DCC8017916FCA0DA007FE736 /* AVFoundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AVFoundation.framework; path = System/Library/Frameworks/AVFoundation.framework; sourceTree = SDKROOT; };
                DCE7BD0608A5724D007B10AE /* bookmarks.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = bookmarks.m; path = ../../../modules/gui/macosx/bookmarks.m; sourceTree = SOURCE_ROOT; };
                DCE7BD0708A5724D007B10AE /* bookmarks.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = bookmarks.h; path = ../../../modules/gui/macosx/bookmarks.h; sourceTree = SOURCE_ROOT; };
                E0382C00160BA09E0031D7FF /* ControlsBar.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ControlsBar.h; path = ../../../modules/gui/macosx/ControlsBar.h; sourceTree = SOURCE_ROOT; };
                        isa = PBXFrameworksBuildPhase;
                        buildActionMask = 2147483647;
                        files = (
+                               DCC8017A16FCA0DA007FE736 /* AVFoundation.framework in Frameworks */,
                                CC402F410E00ABBB006A4BA4 /* Cocoa.framework in Frameworks */,
                                CC402F420E00ABBB006A4BA4 /* ApplicationServices.framework in Frameworks */,
                                CC402F430E00ABBB006A4BA4 /* QTKit.framework in Frameworks */,
                                CC426FD01020D44F00A32659 /* Sparkle.framework */,
                                CCBE999E0F922C51000705F8 /* CoreServices.framework */,
                                CC962E2C0CC7992800A56695 /* WebKit.framework */,
+                               DCC8017916FCA0DA007FE736 /* AVFoundation.framework */,
                                CC1941240B9C1F8400635F6B /* QTKit.framework */,
                                CC3DC89B0A7CDB9600B53F32 /* ApplicationServices.framework */,
                                1058C7ADFEA557BF11CA2CBB /* Cocoa.framework */,
                                CC4D67F71348F601003FCC5B /* darwin_specific.c */,
                                CC6C01BA0DDF3EEC00C7D754 /* auhal.c */,
                                CCC895830D9A8A82005AE59C /* eyetv.m */,
+                               DCC8017816FCA036007FE736 /* avcapture.m */,
                                CC9E3E7913D1CFCF00429A71 /* qtcapture.m */,
                                DC1A176914E2778A001477C6 /* qtsound.m */,
                                CCDBA3B313D32E200006127B /* macosx.m */,
index 0770d94..8a571e7 100644 (file)
@@ -84,6 +84,16 @@ libvlc_LTLIBRARIES += \
         $(NULL)
 endif
 
+if HAVE_AVFOUNDATION
+libavcapture_plugin_la_SOURCES = avcapture.m
+libavcapture_plugin_la_LIBADD = $(AM_LIBADD)
+libavcapture_plugin_la_LDFLAGS = -Wl,-framework,Cocoa -Wl,-framework,AVFoundation -Wl,-framework,CoreMedia
+
+libvlc_LTLIBRARIES += \
+        libavcapture_plugin.la \
+        $(NULL)
+endif
+
 libvlc_LTLIBRARIES += \
        libfilesystem_plugin.la \
        libidummy_plugin.la \
diff --git a/modules/access/avcapture.m b/modules/access/avcapture.m
new file mode 100644 (file)
index 0000000..dfae73f
--- /dev/null
@@ -0,0 +1,479 @@
+/*****************************************************************************
+ * avcapture.m: AVFoundation (Mac OS X) based video capture module
+ *****************************************************************************
+ * Copyright © 2008-2013 VLC authors and VideoLAN
+ *
+ * Authors: Michael Feurstein <michael.feurstein@gmail.com>
+ *
+ ****************************************************************************
+ * 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
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_input.h>
+#include <vlc_demux.h>
+#include <vlc_interface.h>
+#include <vlc_dialog.h>
+#include <vlc_access.h>
+
+#import <AVFoundation/AVFoundation.h>
+#import <CoreMedia/CoreMedia.h>
+
+/*****************************************************************************
+* Local prototypes
+*****************************************************************************/
+static int Open(vlc_object_t *p_this);
+static void Close(vlc_object_t *p_this);
+static int Demux(demux_t *p_demux);
+static int Control(demux_t *, int, va_list);
+
+/*****************************************************************************
+* Module descriptor
+*****************************************************************************/
+vlc_module_begin ()
+   set_shortname(N_("AVFoundation Video Capture"))
+   set_description(N_("AVFoundation video capture module."))
+   set_category(CAT_INPUT)
+   set_subcategory(SUBCAT_INPUT_ACCESS)
+   add_shortcut("avcapture")
+   set_capability("access_demux", 10)
+   set_callbacks(Open, Close)
+vlc_module_end ()
+
+
+/*****************************************************************************
+* AVFoundation Bridge
+*****************************************************************************/
+@interface VLCAVDecompressedVideoOutput : AVCaptureVideoDataOutput
+{
+    demux_t             *p_avcapture;
+
+    CVImageBufferRef    currentImageBuffer;
+    CMVideoDimensions   videoDimensions;
+
+    mtime_t             currentPts;
+    mtime_t             previousPts;
+    size_t              bytesPerRow;
+
+    long                timeScale;
+    BOOL                videoDimensionsReady;
+}
+
+@property (readwrite) CMVideoDimensions videoDimensions;
+
+- (id)initWithDemux:(demux_t *)p_demux;
+- (int)width;
+- (int)height;
+- (void)getVideoDimensions:(CMSampleBufferRef)sampleBuffer;
+- (mtime_t)currentPts;
+- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection;
+- (mtime_t)copyCurrentFrameToBuffer:(void *)buffer;
+@end
+
+@implementation VLCAVDecompressedVideoOutput : AVCaptureVideoDataOutput
+
+@synthesize videoDimensions;
+
+- (id)initWithDemux:(demux_t *)p_demux
+{
+    if (self = [super init])
+    {
+        p_avcapture = p_demux;
+        currentImageBuffer = nil;
+        currentPts = 0;
+        previousPts = 0;
+        bytesPerRow = 0;
+        timeScale = 0;
+        videoDimensionsReady = NO;
+    }
+    return self;
+}
+
+- (void)dealloc
+{
+    @synchronized (self)
+    {
+        CVBufferRelease(currentImageBuffer);
+        currentImageBuffer = nil;
+        bytesPerRow = 0;
+        videoDimensionsReady = NO;
+    }
+    [super dealloc];
+}
+
+- (long)timeScale
+{
+    return timeScale;
+}
+
+- (int)width
+{
+    return self.videoDimensions.width;
+}
+
+- (int)height
+{
+    return self.videoDimensions.height;
+}
+
+- (size_t)bytesPerRow
+{
+    return bytesPerRow;
+}
+
+- (void)getVideoDimensions:(CMSampleBufferRef)sampleBuffer
+{
+    if (!videoDimensionsReady)
+    {
+        CMFormatDescriptionRef formatDescription = CMSampleBufferGetFormatDescription(sampleBuffer);
+        self.videoDimensions = CMVideoFormatDescriptionGetDimensions(formatDescription);
+        bytesPerRow = CVPixelBufferGetBytesPerRow(CMSampleBufferGetImageBuffer(sampleBuffer));
+        videoDimensionsReady = YES;
+        msg_Dbg(p_avcapture, "Dimensionns obtained height:%i width:%i bytesPerRow:%lu", [self height], [self width], bytesPerRow);
+    }
+}
+
+-(mtime_t)currentPts
+{
+    mtime_t pts;
+
+    if ( !currentImageBuffer || currentPts == previousPts )
+        return 0;
+
+    @synchronized (self)
+    {
+        pts = previousPts = currentPts;
+    }
+
+    return currentPts;
+}
+
+- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection
+{
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+
+    CVImageBufferRef imageBufferToRelease;
+    CMTime presentationtimestamp = CMSampleBufferGetPresentationTimeStamp(sampleBuffer);
+    CVImageBufferRef videoFrame = CMSampleBufferGetImageBuffer(sampleBuffer);
+    CVBufferRetain(videoFrame);
+    [self getVideoDimensions:sampleBuffer];
+
+    @synchronized (self)
+    {
+        imageBufferToRelease = currentImageBuffer;
+        currentImageBuffer = videoFrame;
+        currentPts = (mtime_t)presentationtimestamp.value;
+        timeScale = (long)presentationtimestamp.timescale;
+    }
+
+    CVBufferRelease(imageBufferToRelease);
+    [pool release];
+}
+
+- (mtime_t)copyCurrentFrameToBuffer:(void *)buffer
+{
+    CVImageBufferRef imageBuffer;
+    mtime_t pts;
+
+    void *pixels;
+
+    if ( !currentImageBuffer || currentPts == previousPts )
+        return 0;
+
+    @synchronized (self)
+    {
+        imageBuffer = CVBufferRetain(currentImageBuffer);
+        if (imageBuffer)
+        {
+            pts = previousPts = currentPts;
+            CVPixelBufferLockBaseAddress(imageBuffer, 0);
+            pixels = CVPixelBufferGetBaseAddress(imageBuffer);
+            if (pixels)
+            {
+                memcpy(buffer, pixels, CVPixelBufferGetHeight(imageBuffer) * CVPixelBufferGetBytesPerRow(imageBuffer));
+            }
+            CVPixelBufferUnlockBaseAddress(imageBuffer, 0);
+        }
+    }
+    CVBufferRelease(imageBuffer);
+
+    if (pixels)
+        return currentPts;
+    else
+        return 0;
+}
+
+@end
+
+/*****************************************************************************
+* Struct
+*****************************************************************************/
+
+struct demux_sys_t
+{
+    AVCaptureSession                *session;
+    AVCaptureDevice                 *device;
+    VLCAVDecompressedVideoOutput    *output;
+    es_out_id_t                     *p_es_video;
+    es_format_t                     fmt;
+    int                             height, width;
+    BOOL                            b_es_setup;
+};
+
+/*****************************************************************************
+* Open:
+*****************************************************************************/
+static int Open(vlc_object_t *p_this)
+{
+    demux_t                 *p_demux = (demux_t*)p_this;
+    demux_sys_t             *p_sys = NULL;
+
+    NSString                *avf_currdevice_uid;
+    NSArray                 *myVideoDevices;
+    NSError                 *o_returnedError;
+
+    AVCaptureDeviceInput    *input = nil;
+
+    int                     i, i_width, i_height, deviceCount, ivideo;
+
+    char                    *psz_uid = NULL;
+
+    NSAutoreleasePool       *pool = [[NSAutoreleasePool alloc] init];
+
+    /* Only when selected */
+    if ( *p_demux->psz_access == '\0' )
+        return VLC_EGENERIC;
+
+    if ( p_demux->psz_location && *p_demux->psz_location )
+        psz_uid = strdup(p_demux->psz_location);
+
+    msg_Dbg(p_demux, "avcapture uid = %s", psz_uid);
+    avf_currdevice_uid = [[NSString alloc] initWithFormat:@"%s", psz_uid];
+
+    /* Set up p_demux */
+    p_demux->pf_demux = Demux;
+    p_demux->pf_control = Control;
+    p_demux->info.i_update = 0;
+    p_demux->info.i_title = 0;
+    p_demux->info.i_seekpoint = 0;
+
+    p_demux->p_sys = p_sys = calloc(1, sizeof(demux_sys_t));
+    if ( !p_sys )
+        return VLC_ENOMEM;
+
+    myVideoDevices = [[[AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo] arrayByAddingObjectsFromArray:[AVCaptureDevice devicesWithMediaType:AVMediaTypeMuxed]] retain];
+    if ( [myVideoDevices count] == 0 )
+    {
+        dialog_FatalWait(p_demux, _("No video devices found"),
+                         _("Your Mac does not seem to be equipped with a suitable video input device. "
+                           "Please check your connectors and drivers."));
+        msg_Err(p_demux, "Can't find any suitable video device");
+        goto error;
+    }
+
+    deviceCount = [myVideoDevices count];
+    for ( ivideo = 0; ivideo < deviceCount; ivideo++ )
+    {
+        AVCaptureDevice *avf_device;
+        avf_device = [myVideoDevices objectAtIndex:ivideo];
+        msg_Dbg(p_demux, "avcapture %lu/%lu %s %s", ivideo, deviceCount, [[avf_device modelID] UTF8String], [[avf_device uniqueID] UTF8String]);
+        if ([[[avf_device uniqueID]stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] isEqualToString:avf_currdevice_uid]) {
+            break;
+        }
+    }
+
+    if ( ivideo < [myVideoDevices count] )
+    {
+       p_sys->device = [myVideoDevices objectAtIndex:ivideo];
+    }
+    else
+    {
+        msg_Dbg(p_demux, "Cannot find designated device as %s, falling back to default.", [avf_currdevice_uid UTF8String]);
+        p_sys->device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
+    }
+    if ( !p_sys->device )
+    {
+        dialog_FatalWait(p_demux, _("No video devices found"),
+                        _("Your Mac does not seem to be equipped with a suitable input device. "
+                          "Please check your connectors and drivers."));
+        msg_Err(p_demux, "Can't find any suitable video device");
+        goto error;
+    }
+
+    if ( [p_sys->device isInUseByAnotherApplication] == YES )
+    {
+        msg_Err(p_demux, "default capture device is exclusively in use by another application");
+        goto error;
+    }
+
+    input = [AVCaptureDeviceInput deviceInputWithDevice:p_sys->device error:&o_returnedError];
+
+    if ( !input )
+    {
+        msg_Err(p_demux, "can't create a valid capture input facility (%ld)", [o_returnedError code]);
+        goto error;
+    }
+
+    int chroma = VLC_CODEC_RGB32;
+
+    memset(&p_sys->fmt, 0, sizeof(es_format_t));
+    es_format_Init(&p_sys->fmt, VIDEO_ES, chroma);
+
+    p_sys->session = [[AVCaptureSession alloc] init];
+    [p_sys->session addInput:input];
+
+    p_sys->output = [[VLCAVDecompressedVideoOutput alloc] initWithDemux:p_demux];
+    [p_sys->session addOutput:p_sys->output];
+
+    dispatch_queue_t queue = dispatch_queue_create("avCaptureQueue", NULL);
+    [p_sys->output setSampleBufferDelegate:p_sys->output queue:queue];
+    dispatch_release(queue);
+
+    p_sys->output.videoSettings = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:kCVPixelFormatType_32BGRA] forKey:(id)kCVPixelBufferPixelFormatTypeKey];
+    [p_sys->session startRunning];
+
+    [input release];
+
+    msg_Dbg(p_demux, "AVCapture: Video device ready!");
+
+    [pool release];
+    return VLC_SUCCESS;
+error:
+    msg_Err(p_demux, "Error");
+    [input release];
+
+    free(p_sys);
+
+    [pool release];
+    return VLC_EGENERIC;
+}
+
+/*****************************************************************************
+* Close:
+*****************************************************************************/
+static void Close(vlc_object_t *p_this)
+{
+    NSAutoreleasePool   *pool = [[NSAutoreleasePool alloc] init];
+    demux_t             *p_demux = (demux_t*)p_this;
+    demux_sys_t         *p_sys = p_demux->p_sys;
+
+    msg_Dbg(p_demux,"Close AVCapture");
+
+    if ( vlc_object_alive(p_this->p_libvlc) )
+    {
+        // Perform this on main thread, as the framework itself will sometimes try to synchronously
+        // work on main thread. And this will create a dead lock.
+        [p_sys->session performSelectorOnMainThread:@selector(stopRunning) withObject:nil waitUntilDone:NO];
+        [p_sys->output performSelectorOnMainThread:@selector(release) withObject:nil waitUntilDone:NO];
+        [p_sys->session performSelectorOnMainThread:@selector(release) withObject:nil waitUntilDone:NO];
+    }
+
+    free(p_sys);
+
+    [pool release];
+}
+
+/*****************************************************************************
+* Demux:
+*****************************************************************************/
+static int Demux(demux_t *p_demux)
+{
+    demux_sys_t *p_sys = p_demux->p_sys;
+    block_t     *p_block;
+
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+
+    @synchronized ( p_sys->output )
+    {
+        p_block = block_Alloc([p_sys->output width] * [p_sys->output bytesPerRow]);
+
+        if ( !p_block )
+        {
+            msg_Err(p_demux, "cannot get block");
+            return 0;
+        }
+
+        p_block->i_pts = [p_sys->output copyCurrentFrameToBuffer: p_block->p_buffer];
+
+        if ( !p_block->i_pts )
+        {
+            /* Nothing to display yet, just forget */
+            block_Release(p_block);
+            [pool release];
+            msleep(10000);
+            return 1;
+        }
+        else if ( !p_sys->b_es_setup )
+        {
+            p_sys->fmt.video.i_frame_rate_base = [p_sys->output timeScale];
+            msg_Dbg(p_demux, "using frame rate base: %i", p_sys->fmt.video.i_frame_rate_base);
+            p_sys->width = p_sys->fmt.video.i_width = [p_sys->output width];
+            p_sys->height = p_sys->fmt.video.i_height = [p_sys->output height];
+            p_sys->p_es_video = es_out_Add(p_demux->out, &p_sys->fmt);
+            msg_Dbg(p_demux, "added new video es %4.4s %dx%d", (char*)&p_sys->fmt.i_codec, p_sys->width, p_sys->height);
+            p_sys->b_es_setup = YES;
+        }
+    }
+
+    es_out_Control(p_demux->out, ES_OUT_SET_PCR, p_block->i_pts);
+    es_out_Send(p_demux->out, p_sys->p_es_video, p_block);
+
+    [pool release];
+    return 1;
+}
+
+/*****************************************************************************
+* Control:
+*****************************************************************************/
+static int Control(demux_t *p_demux, int i_query, va_list args)
+{
+    bool        *pb;
+    int64_t     *pi64;
+
+    switch( i_query )
+    {
+        /* Special for access_demux */
+        case DEMUX_CAN_PAUSE:
+        case DEMUX_CAN_SEEK:
+        case DEMUX_SET_PAUSE_STATE:
+        case DEMUX_CAN_CONTROL_PACE:
+           pb = (bool*)va_arg(args, bool *);
+           *pb = false;
+           return VLC_SUCCESS;
+
+        case DEMUX_GET_PTS_DELAY:
+           pi64 = (int64_t*)va_arg(args, int64_t *);
+           *pi64 = INT64_C(1000) * var_InheritInteger(p_demux, "live-caching");
+           return VLC_SUCCESS;
+
+        case DEMUX_GET_TIME:
+            pi64 = (int64_t*)va_arg(args, int64_t *);
+            *pi64 = mdate();
+            return VLC_SUCCESS;
+
+        default:
+           return VLC_EGENERIC;
+    }
+    return VLC_EGENERIC;
+}