Commit 9dcd81a1 authored by Pierre d'Herbemont's avatar Pierre d'Herbemont
Browse files

qtcapture: New access_demux module (QTKit based) to capture video from your...

qtcapture: New access_demux module (QTKit based) to capture video from your iSight Camera on Mac OS X.

Usage: 'vlc qtcapture://'.

This is a 2 hours hacked module. We don't grab sound yet, and there are a lot of FIXME.

Note: For some reason QTKit needs a the main thread to be a cocoa thread. Don't expect it to run with -I dummy for instance.
parent 3dfed6db
......@@ -5528,18 +5528,20 @@ AC_ARG_ENABLE(macosx,
if test "x${enable_macosx}" = "xyes"
then
# VLC_ADD_LDFLAGS([access_eyetv], [-Wl,-framework,Foundation])
VLC_ADD_LDFLAGS([macosx minimal_macosx opengllayer],[-Wl,-framework,Cocoa])
VLC_ADD_LDFLAGS([macosx minimal_macosx opengllayer qtcapture],[-Wl,-framework,Cocoa])
VLC_ADD_LDFLAGS([macosx minimal_macosx opengllayer],[-Wl,-framework,OpenGL])
VLC_ADD_LDFLAGS([macosx minimal_macosx], [-Wl,-framework,Carbon])
VLC_ADD_LDFLAGS([macosx minimal_macosx], [-Wl,-framework,AGL])
VLC_ADD_LDFLAGS([macosx], [-Wl,-framework,IOKit])
VLC_ADD_LDFLAGS([macosx], [-Wl,-framework,QuickTime])
VLC_ADD_LDFLAGS([macosx], [-Wl,-framework,QTKit])
VLC_ADD_LDFLAGS([macosx qtcapture], [-Wl,-framework,QTKit])
VLC_ADD_LDFLAGS([macosx], [-Wl,-framework,WebKit])
VLC_ADD_LDFLAGS([opengllayer], [-Wl,-framework,QuartzCore])
VLC_ADD_LDFLAGS([opengllayer qtcapture], [-Wl,-framework,QuartzCore])
VLC_ADD_LDFLAGS([qtcapture], [-Wl,-framework,CoreVideo])
VLC_ADD_OBJCFLAGS([macosx minimal_macosx opengllayer growl], [-fobjc-exceptions] )
# VLC_ADD_PLUGIN([access_eyetv])
VLC_ADD_PLUGIN([qtcapture])
VLC_ADD_PLUGIN([macosx])
VLC_ADD_PLUGIN([minimal_macosx])
......
......@@ -29,6 +29,7 @@ SOURCES_dc1394 = dc1394.c
SOURCES_access_fake = fake.c
SOURCES_pvr = pvr.c videodev2.h
SOURCES_v4l = v4l.c videodev_mjpeg.h
SOURCES_qtcapture = qtcapture.m
SOURCES_cdda = \
cdda.c \
vcd/cdrom.c \
......
/*****************************************************************************
* qtcapture.m: qtkit (Mac OS X) based capture module
*****************************************************************************
* Copyright (C) 2008 the VideoLAN team
*
* Authors: Pierre d'Herbemont <pdherbemont@videolan.org>
*
*****************************************************************************
* This library 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;
* version 2 of the License.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc/vlc.h>
#include <vlc_plugin.h>
#include <vlc_input.h>
#include <vlc_vout.h>
#include <vlc_demux.h>
#import <QTKit/QTKit.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_("Quicktime Capture") );
set_description( N_("Quicktime Capture") );
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_ACCESS );
add_shortcut( "qtcapture" );
set_capability( "access_demux", 10 );
set_callbacks( Open, Close );
vlc_module_end();
/*****************************************************************************
* QTKit Bridge
*****************************************************************************/
@interface VLCDecompressedVideoOutput : QTCaptureDecompressedVideoOutput
{
CVImageBufferRef currentImageBuffer;
}
- (id)init;
- (void)outputVideoFrame:(CVImageBufferRef)videoFrame withSampleBuffer:(QTSampleBuffer *)sampleBuffer fromConnection:(QTCaptureConnection *)connection;
- (BOOL)copyCurrentFrameToBuffer:(void *)buffer;
@end
/* Apple sample code */
@implementation VLCDecompressedVideoOutput : QTCaptureDecompressedVideoOutput
- (id)init
{
if( self = [super init] )
{
currentImageBuffer = nil;
}
return self;
}
- (void)dealloc
{
@synchronized (self) {
CVBufferRelease(currentImageBuffer);
currentImageBuffer = nil;
}
[super dealloc];
}
- (void)outputVideoFrame:(CVImageBufferRef)videoFrame withSampleBuffer:(QTSampleBuffer *)sampleBuffer fromConnection:(QTCaptureConnection *)connection
{
// Store the latest frame
// This must be done in a @synchronized block because this delegate method is not called on the main thread
CVImageBufferRef imageBufferToRelease;
CVBufferRetain(videoFrame);
@synchronized (self) {
imageBufferToRelease = currentImageBuffer;
currentImageBuffer = videoFrame;
}
CVBufferRelease(imageBufferToRelease);
}
- (BOOL)copyCurrentFrameToBuffer:(void *)buffer
{
CVImageBufferRef imageBuffer;
@synchronized (self) {
if(!currentImageBuffer) return NO;
imageBuffer = CVBufferRetain(currentImageBuffer);
}
CVPixelBufferLockBaseAddress(imageBuffer, 0);
void * pixels = CVPixelBufferGetBaseAddress(imageBuffer);
memcpy( buffer, pixels, CVPixelBufferGetBytesPerRow(imageBuffer) * CVPixelBufferGetHeight(imageBuffer) );
CVPixelBufferUnlockBaseAddress(imageBuffer, 0);
CVBufferRelease(imageBuffer);
return YES;
}
@end
struct demux_sys_t {
QTCaptureSession * session;
VLCDecompressedVideoOutput * output;
int height, width;
es_out_id_t * p_es_video;
};
int qtchroma_to_fourcc( int i_qt )
{
static struct
{
unsigned int i_qt;
int i_fourcc;
} qtchroma_to_fourcc[] =
{
/* Raw data types */
{ k422YpCbCr8CodecType, VLC_FOURCC('U','Y','V','Y') },
{ 0, 0 }
};
int i;
for( i = 0; qtchroma_to_fourcc[i].i_qt; i++ )
{
if( qtchroma_to_fourcc[i].i_qt == i_qt )
return qtchroma_to_fourcc[i].i_fourcc;
}
return 0;
}
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys = NULL;
es_format_t fmt;
int i;
int i_width;
int i_height;
int i_aspect;
int result = 0;
/* 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;
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
msg_Dbg( p_demux, "QTCapture Probed" );
p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
if( !p_sys ) return VLC_ENOMEM;
memset( p_sys, 0, sizeof( demux_sys_t ) );
memset( &fmt, 0, sizeof( es_format_t ) );
QTCaptureDeviceInput * input = nil;
QTCaptureSession * session = nil;
VLCDecompressedVideoOutput * output = nil;
QTCaptureDevice * device = [QTCaptureDevice defaultInputDeviceWithMediaType: QTMediaTypeVideo];
if( !device )
{
msg_Err( p_demux, "Can't open any Video device" );
goto error;
}
if( ![device open: nil /* FIXME */] )
{
msg_Err( p_demux, "Can't open any Video device" );
goto error;
}
input = [[QTCaptureDeviceInput alloc] initWithDevice: device];
if( !device )
{
msg_Err( p_demux, "Can't create a capture session" );
goto error;
}
output = [[VLCDecompressedVideoOutput alloc] init];
session = [[QTCaptureSession alloc] init];
bool ret = [session addInput:input error:nil /* FIXME */];
if( !ret )
{
msg_Err( p_demux, "Can't add the video device as input" );
goto error;
}
ret = [session addOutput:output error:nil /* FIXME */];
if( !ret )
{
msg_Err( p_demux, "Can't get any output output" );
goto error;
}
[session startRunning];
int qtchroma = [[[device formatDescriptions] objectAtIndex: 0] formatType]; /* FIXME */
int chroma = qtchroma_to_fourcc( qtchroma );
if( !chroma )
{
msg_Err( p_demux, "Unknown qt chroma %4.4s provided by camera", (char*)&qtchroma );
goto error;
}
es_format_Init( &fmt, VIDEO_ES, chroma );
NSSize size = [[device attributeForKey:QTFormatDescriptionVideoEncodedPixelsSizeAttribute] sizeValue];
p_sys->width = fmt.video.i_width = 640;/* size.width; FIXME */
p_sys->height = fmt.video.i_height = 480;/* size.height; FIXME */
msg_Err( p_demux, "added new video es %4.4s %dx%d",
(char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
p_sys->output = [output retain];
p_sys->session = [session retain];
[input release];
[output release];
[session release];
[pool release];
msg_Dbg( p_demux, "QTCapture: We have a video device ready!" );
return VLC_SUCCESS;
error:
[input release];
[session release];
[input release];
[output release];
[pool release];
free( p_sys );
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;
[p_sys->output release];
[p_sys->session release];
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;
p_block = block_New( p_demux, p_sys->width *
p_sys->height * 2 /* FIXME */ );
if( !p_block )
{
msg_Err( p_demux, "cannot get block" );
return 0;
}
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
if( ![p_sys->output copyCurrentFrameToBuffer: p_block->p_buffer] )
{
/* Nothing to display yet, just forget */
block_Release( p_block );
[pool release];
return 1;
}
p_block->i_pts = mdate(); /* FIXME */
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_t)DEFAULT_PTS_DELAY;
return VLC_SUCCESS;
case DEMUX_GET_TIME:
pi64 = (int64_t*)va_arg( args, int64_t * );
*pi64 = mdate();
return VLC_SUCCESS;
/* TODO implement others */
default:
return VLC_EGENERIC;
}
return VLC_EGENERIC;
}
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