--- /dev/null
+/*****************************************************************************
+ * opencv_example.cpp : Example OpenCV internal video filter
+ * (performs face identification). Mostly taken from the facedetect.c
+ * OpenCV sample.
+ *****************************************************************************
+ * Copyright (C) 2006 the VideoLAN team
+ *
+ * Authors: Dugal Harris <dugalh@protoclea.co.za>
+ *
+ * This program 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.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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
+ *****************************************************************************/
+#include <cxcore.h>
+#include <cv.h>
+#include <highgui.h>
+
+
+#include <vlc/vlc.h>
+#include <vlc/decoder.h>
+#include "vlc_filter.h"
+#include "filter_common.h"
+#include "vlc_image.h"
+#include "filter_event_info.h"
+
+/*****************************************************************************
+ * filter_sys_t : filter descriptor
+ *****************************************************************************/
+struct filter_sys_t
+{
+ CvMemStorage* p_storage;
+ CvHaarClassifierCascade* p_cascade;
+ video_filter_event_info_t event_info;
+ int i_id;
+};
+
+/****************************************************************************
+ * Local prototypes
+ ****************************************************************************/
+static int OpenFilter ( vlc_object_t * );
+static void CloseFilter( vlc_object_t * );
+
+static picture_t *Filter( filter_t *, picture_t * );
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+vlc_module_begin();
+ set_description( _("OpenCV face detection example filter") );
+ set_shortname( N_( "OpenCV example" ));
+ set_capability( "opencv example", 1 );
+ add_shortcut( "opencv_example" );
+
+ set_category( CAT_VIDEO );
+ set_subcategory( SUBCAT_VIDEO_VFILTER2 );
+ set_callbacks( OpenFilter, CloseFilter );
+
+ add_string( "opencv-haarcascade-file", "c:\\haarcascade_frontalface_alt.xml", NULL,
+ N_("Haar cascade filename"),
+ N_("Name of XML file containing Haar cascade description"), VLC_FALSE);
+vlc_module_end();
+
+/*****************************************************************************
+ * OpenFilter: probe the filter and return score
+ *****************************************************************************/
+static int OpenFilter( vlc_object_t *p_this )
+{
+ filter_t *p_filter = (filter_t*)p_this;
+ filter_sys_t *p_sys;
+
+ /* Allocate the memory needed to store the decoder's structure */
+ if( ( p_filter->p_sys = p_sys =
+ (filter_sys_t *)malloc(sizeof(filter_sys_t)) ) == NULL )
+ {
+ msg_Err( p_filter, "out of memory" );
+ return VLC_EGENERIC;
+ }
+
+ //init the video_filter_event_info_t struct
+ p_sys->event_info.i_region_size = 0;
+ p_sys->event_info.p_region = NULL;
+ p_sys->i_id = 0;
+
+ p_filter->pf_video_filter = Filter;
+
+ //create the VIDEO_FILTER_EVENT_VARIABLE
+ vlc_value_t val;
+ if (var_Create( p_filter->p_libvlc, VIDEO_FILTER_EVENT_VARIABLE, VLC_VAR_ADDRESS | VLC_VAR_DOINHERIT ) != VLC_SUCCESS)
+ msg_Err( p_filter, "Could not create %s\n", VIDEO_FILTER_EVENT_VARIABLE);
+
+ val.p_address = &(p_sys->event_info);
+ if (var_Set( p_filter->p_libvlc, VIDEO_FILTER_EVENT_VARIABLE, val )!=VLC_SUCCESS)
+ msg_Err( p_filter, "Could not set %s\n", VIDEO_FILTER_EVENT_VARIABLE);
+
+ //OpenCV init specific to this example
+ char* filename = config_GetPsz( p_filter, "opencv-haarcascade-file" );
+ p_filter->p_sys->p_cascade = (CvHaarClassifierCascade*)cvLoad( filename, 0, 0, 0 );
+ p_filter->p_sys->p_storage = cvCreateMemStorage(0);
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * CloseFilter: clean up the filter
+ *****************************************************************************/
+static void CloseFilter( vlc_object_t *p_this )
+{
+ filter_t *p_filter = (filter_t*)p_this;
+ filter_sys_t *p_sys = p_filter->p_sys;
+
+ if( p_filter->p_sys->p_cascade )
+ cvReleaseHaarClassifierCascade( &p_filter->p_sys->p_cascade );
+
+ if( p_filter->p_sys->p_storage )
+ cvReleaseMemStorage( &p_filter->p_sys->p_storage );
+
+ if (NULL != p_filter->p_sys->event_info.p_region)
+ free(p_filter->p_sys->event_info.p_region);
+
+ free( p_sys );
+
+ var_Destroy( p_filter->p_libvlc, VIDEO_FILTER_EVENT_VARIABLE);
+}
+
+/****************************************************************************
+ * Filter: Check for faces and raises an event when one is found.
+ ****************************************************************************
+ * p_pic: A picture_t with its p_data_orig member set to an array of
+ * IplImages (one image for each picture_t plane).
+ ****************************************************************************/
+static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
+{
+ IplImage** p_img = NULL;
+ int i_planes = 0;
+ CvPoint pt1, pt2;
+ int i, scale = 1;
+
+ if ((!p_pic) )
+ {
+ msg_Err( p_filter, "no image array" );
+ return NULL;
+ }
+ if (!(p_pic->p_data_orig))
+ {
+ msg_Err( p_filter, "no image array" );
+ return NULL;
+ }
+ //(hack) cast the picture_t to array of IplImage*
+ p_img = (IplImage**) p_pic->p_data_orig;
+ i_planes = p_pic->i_planes;
+
+ //check the image array for validity
+ if ((!p_img[0])) //1st plane is 'I' i.e. greyscale
+ {
+ msg_Err( p_filter, "no image" );
+ return NULL;
+ }
+ if ((p_pic->format.i_chroma != VLC_FOURCC('I','4','2','0')))
+ {
+ msg_Err( p_filter, "wrong chroma - use I420" );
+ return NULL;
+ }
+ if (i_planes<1)
+ {
+ msg_Err( p_filter, "no image planes" );
+ return NULL;
+ }
+
+ //perform face detection
+ cvClearMemStorage(p_filter->p_sys->p_storage);
+ CvSeq* faces = NULL;
+ if( p_filter->p_sys->p_cascade )
+ {
+ //we should make some of these params config variables
+ faces = cvHaarDetectObjects( p_img[0], p_filter->p_sys->p_cascade,
+ p_filter->p_sys->p_storage, 1.15, 5, CV_HAAR_DO_CANNY_PRUNING,
+ cvSize(20, 20) );
+ //create the video_filter_region_info_t struct
+ CvRect* r;
+ if (faces && (faces->total > 0))
+ {
+ //msg_Dbg( p_filter, "Found %d face(s)\n", faces->total );
+ if (NULL != p_filter->p_sys->event_info.p_region)
+ {
+ free(p_filter->p_sys->event_info.p_region);
+ p_filter->p_sys->event_info.p_region = NULL;
+ }
+ if( NULL == ( p_filter->p_sys->event_info.p_region =
+ (video_filter_region_info_t *)malloc(faces->total*sizeof(video_filter_region_info_t))))
+ {
+ msg_Err( p_filter, "out of memory" );
+ return NULL;
+ }
+ memset(p_filter->p_sys->event_info.p_region, 0, faces->total*sizeof(video_filter_region_info_t));
+ p_filter->p_sys->event_info.i_region_size = faces->total;
+ }
+
+ //populate the video_filter_region_info_t struct
+ for( i = 0; i < (faces ? faces->total : 0); i++ )
+ {
+ r = (CvRect*)cvGetSeqElem( faces, i );
+ pt1.x = r->x*scale;
+ pt2.x = (r->x+r->width)*scale;
+ pt1.y = r->y*scale;
+ pt2.y = (r->y+r->height)*scale;
+ cvRectangle( p_img[0], pt1, pt2, CV_RGB(0,0,0), 3, 8, 0 );
+
+ *(CvRect*)(&(p_filter->p_sys->event_info.p_region[i])) = *r;
+ p_filter->p_sys->event_info.p_region[i].i_id = p_filter->p_sys->i_id++;
+ p_filter->p_sys->event_info.p_region[i].p_description = "Face Detected";
+ }
+
+ if (faces && (faces->total > 0)) //raise the video filter event
+ var_Change( p_filter->p_libvlc, VIDEO_FILTER_EVENT_VARIABLE, VLC_VAR_TRIGGER_CALLBACKS, NULL, NULL );
+ }
+ else
+ msg_Err( p_filter, "No cascade - is opencv-haarcascade-file valid?" );
+
+ return p_pic;
+}
+
--- /dev/null
+/*****************************************************************************
+ * opencv_wrapper.c : OpenCV wrapper video filter
+ *****************************************************************************
+ * Copyright (C) 2006 the VideoLAN team
+ *
+ * Authors: Dugal Harris <dugalh@protoclea.co.za>
+ *
+ * This program 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.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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
+ *****************************************************************************/
+#include <stdlib.h> /* malloc(), free() */
+#include <string.h>
+
+#include <cxcore.h>
+#include <cv.h>
+#include <highgui.h>
+
+#include <vlc/vlc.h>
+#include <vlc/vout.h>
+
+#include <math.h>
+#include <time.h>
+
+#include "vlc_filter.h"
+#include "filter_common.h"
+#include "charset.h"
+#include "vlc_image.h"
+#include "vlc_input.h"
+#include "vlc_playlist.h"
+
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int Create ( vlc_object_t * );
+static void Destroy ( vlc_object_t * );
+
+static int Init ( vout_thread_t * );
+static void End ( vout_thread_t * );
+static void Render ( vout_thread_t *, picture_t * );
+
+static int SendEvents( vlc_object_t *, char const *,
+ vlc_value_t, vlc_value_t, void * );
+static void ReleaseImages( vout_thread_t *p_vout );
+static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in );
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+
+static char *chroma_list[] = { "input", "I420", "RGB32"};
+static char *chroma_list_text[] = { N_("Use input chroma unaltered"),
+ N_("I420 - first plane is greyscale"), N_("RGB32")};
+
+static char *output_list[] = { "none", "input", "processed"};
+static char *output_list_text[] = { N_("Don't display any video"),
+ N_("Display the input video"), N_("Display the processed video")};
+
+static char *verbosity_list[] = { "error", "warning", "debug"};
+static char *verbosity_list_text[] = { N_("Show only errors"),
+ N_("Show errors and warnings"), N_("Show everything including debug messages")};
+
+vlc_module_begin();
+ set_description( _("OpenCV video filter wrapper") );
+ set_shortname( N_("OpenCV" ));
+ set_category( CAT_VIDEO );
+ set_subcategory( SUBCAT_VIDEO_VFILTER );
+ set_capability( "video filter", 0 );
+ add_shortcut( "opencv_wrapper" );
+ set_callbacks( Create, Destroy );
+ add_float_with_range( "opencv-scale", 1.0, 0.1, 2.0, NULL,
+ N_("Scale factor (0.1-2.0)"),
+ N_("Ammount by which to scale the picture before sending it to the internal OpenCV filter"),
+ VLC_FALSE );
+ add_string( "opencv-chroma", "input", NULL,
+ N_("OpenCV filter chroma"),
+ N_("Chroma to convert picture to before sending it to the internal OpenCV filter"), VLC_FALSE);
+ change_string_list( chroma_list, chroma_list_text, 0);
+ add_string( "opencv-output", "input", NULL,
+ N_("Wrapper filter output"),
+ N_("Determines what (if any) video is displayed by the wrapper filter"), VLC_FALSE);
+ change_string_list( output_list, output_list_text, 0);
+ add_string( "opencv-verbosity", "error", NULL,
+ N_("Wrapper filter verbosity"),
+ N_("Determines wrapper filter verbosity level"), VLC_FALSE);
+ change_string_list( verbosity_list, verbosity_list_text, 0);
+ add_string( "opencv-filter-name", "none", NULL,
+ N_("OpenCV internal filter name"),
+ N_("Name of internal OpenCV plugin filter to use"), VLC_FALSE);
+vlc_module_end();
+
+
+/*****************************************************************************
+ * wrapper_output_t: what video is output
+ *****************************************************************************/
+enum wrapper_output_t
+{
+ NONE, //not working yet
+ VINPUT,
+ PROCESSED
+};
+
+/*****************************************************************************
+ * internal_chroma_t: what chroma is sent to the internal opencv filter
+ *****************************************************************************/
+enum internal_chroma_t
+{
+ CINPUT,
+ GREY,
+ RGB
+};
+
+/*****************************************************************************
+ * verbosity_t:
+ *****************************************************************************/
+enum verbosity_t
+{
+ VERB_ERROR,
+ VERB_WARN,
+ VERB_DEBUG
+};
+
+/*****************************************************************************
+ * vout_sys_t: opencv_wrapper video output method descriptor
+ *****************************************************************************
+ * This structure is part of the video output thread descriptor.
+ * It describes the opencv_wrapper specific properties of an output thread.
+ *****************************************************************************/
+struct vout_sys_t
+{
+ vout_thread_t *p_vout;
+
+ image_handler_t *p_image;
+
+ int i_cv_image_size;
+
+ picture_t *p_proc_image;
+ picture_t *p_to_be_freed;
+
+ float f_scale;
+
+ int i_wrapper_output;
+ int i_internal_chroma;
+ int i_verbosity;
+
+ IplImage *p_cv_image[VOUT_MAX_PLANES];
+
+ filter_t *p_opencv;
+ char* psz_inner_name;
+
+ picture_t hacked_pic;
+};
+
+/*****************************************************************************
+ * Control: control facility for the vout (forwards to child vout)
+ *****************************************************************************/
+static int Control( vout_thread_t *p_vout, int i_query, va_list args )
+{
+ return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
+}
+
+/*****************************************************************************
+ * Create: allocates opencv_wrapper video thread output method
+ *****************************************************************************
+ * This function allocates and initializes a opencv_wrapper vout method.
+ *****************************************************************************/
+static int Create( vlc_object_t *p_this )
+{
+ vout_thread_t *p_vout = (vout_thread_t *)p_this;
+ char *psz_chroma, *psz_output, *psz_verbosity;
+ int i = 0;
+
+ /* Allocate structure */
+ p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
+ if( p_vout->p_sys == NULL )
+ {
+ msg_Err( p_vout, "out of memory" );
+ return VLC_ENOMEM;
+ }
+
+ /* Init structure */
+ p_vout->p_sys->p_image = image_HandlerCreate( p_vout );
+ for (i = 0; i < VOUT_MAX_PLANES; i++)
+ p_vout->p_sys->p_cv_image[i] = NULL;
+ p_vout->p_sys->p_proc_image = NULL;
+ p_vout->p_sys->p_to_be_freed = NULL;
+ p_vout->p_sys->i_cv_image_size = 0;
+
+ p_vout->pf_init = Init;
+ p_vout->pf_end = End;
+ p_vout->pf_manage = NULL;
+ p_vout->pf_render = Render;
+ p_vout->pf_display = NULL;
+ p_vout->pf_control = Control;
+
+ /* Retrieve and apply config */
+ if( !(psz_chroma = config_GetPsz( p_vout, "opencv-chroma" )) )
+ {
+ msg_Err( p_vout, "configuration variable %s empty, using 'grey'",
+ "opencv-chroma" );
+ p_vout->p_sys->i_internal_chroma = GREY;
+ }
+ else
+ {
+ if( !strcmp( psz_chroma, "input" ) )
+ p_vout->p_sys->i_internal_chroma = CINPUT;
+ else if( !strcmp( psz_chroma, "I420" ) )
+ p_vout->p_sys->i_internal_chroma = GREY;
+ else if( !strcmp( psz_chroma, "RGB32" ) )
+ p_vout->p_sys->i_internal_chroma = RGB;
+ else
+ {
+ msg_Err( p_vout, "no valid opencv-chroma provided, using 'grey'" );
+ p_vout->p_sys->i_internal_chroma = GREY;
+ }
+ }
+ free( psz_chroma);
+
+ if( !(psz_output = config_GetPsz( p_vout, "opencv-output" )) )
+ {
+ msg_Err( p_vout, "configuration variable %s empty, using 'input'",
+ "opencv-output" );
+ p_vout->p_sys->i_wrapper_output = VINPUT;
+ }
+ else
+ {
+ if( !strcmp( psz_output, "none" ) )
+ p_vout->p_sys->i_wrapper_output = NONE;
+ else if( !strcmp( psz_output, "input" ) )
+ p_vout->p_sys->i_wrapper_output = VINPUT;
+ else if( !strcmp( psz_output, "processed" ) )
+ p_vout->p_sys->i_wrapper_output = PROCESSED;
+ else
+ {
+ msg_Err( p_vout, "no valid opencv-output provided, using 'input'" );
+ p_vout->p_sys->i_wrapper_output = VINPUT;
+ }
+ }
+ free( psz_output);
+
+ if( !(psz_verbosity = config_GetPsz( p_vout, "opencv-verbosity" )) )
+ {
+ msg_Err( p_vout, "configuration variable %s empty, using 'input'",
+ "opencv-verbosity" );
+ p_vout->p_sys->i_verbosity = VERB_ERROR;
+ }
+ else
+ {
+ if( !strcmp( psz_verbosity, "error" ) )
+ p_vout->p_sys->i_verbosity = VERB_ERROR;
+ else if( !strcmp( psz_verbosity, "warning" ) )
+ p_vout->p_sys->i_verbosity = VERB_WARN;
+ else if( !strcmp( psz_verbosity, "debug" ) )
+ p_vout->p_sys->i_verbosity = VERB_DEBUG;
+ else
+ {
+ msg_Err( p_vout, "no valid opencv-verbosity provided, using 'error'" );
+ p_vout->p_sys->i_verbosity = VERB_ERROR;
+ }
+ }
+ free( psz_verbosity);
+
+ p_vout->p_sys->psz_inner_name = config_GetPsz( p_vout, "opencv-filter-name" );
+
+ p_vout->p_sys->f_scale =
+ config_GetFloat( p_vout, "opencv-scale" );
+
+ if (p_vout->p_sys->i_verbosity > VERB_WARN)
+ msg_Info(p_vout, "Configuration: opencv-scale: %f, opencv-chroma: %d, "
+ "opencv-output: %d, opencv-verbosity %d, opencv-filter %s",
+ p_vout->p_sys->f_scale,
+ p_vout->p_sys->i_internal_chroma,
+ p_vout->p_sys->i_wrapper_output,
+ p_vout->p_sys->i_verbosity,
+ p_vout->p_sys->psz_inner_name);
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Init: initialize opencv_wrapper video thread output method
+ *****************************************************************************/
+static int Init( vout_thread_t *p_vout )
+{
+ int i_index;
+ picture_t *p_pic;
+ video_format_t fmt = {0};
+ vout_sys_t *p_sys = p_vout->p_sys;
+ I_OUTPUTPICTURES = 0;
+
+ /* Initialize the output video format */
+ p_vout->output.i_chroma = p_vout->render.i_chroma;
+ p_vout->output.i_width = p_vout->render.i_width;
+ p_vout->output.i_height = p_vout->render.i_height;
+ p_vout->output.i_aspect = p_vout->render.i_aspect;
+ p_vout->fmt_out = p_vout->fmt_in; //set to input video format
+
+ fmt = p_vout->fmt_out;
+ if (p_sys->i_wrapper_output == PROCESSED) //set to processed video format
+ {
+ fmt.i_width = fmt.i_width * p_sys->f_scale;
+ fmt.i_height = fmt.i_height * p_sys->f_scale;
+ fmt.i_visible_width = fmt.i_visible_width * p_sys->f_scale;
+ fmt.i_visible_height = fmt.i_visible_height * p_sys->f_scale;
+ fmt.i_x_offset = fmt.i_x_offset * p_sys->f_scale;
+ fmt.i_y_offset = fmt.i_y_offset * p_sys->f_scale;
+
+ if (p_sys->i_internal_chroma == GREY)
+ fmt.i_chroma = VLC_FOURCC('I','4','2','0');
+ else if (p_sys->i_internal_chroma == RGB)
+ fmt.i_chroma = VLC_FOURCC('R','V','3','2');
+ }
+
+ /* Load the internal opencv filter */
+ /* We don't need to set up video formats for this filter as it not actually using a picture_t */
+ p_sys->p_opencv = vlc_object_create( p_vout, sizeof(filter_t) );
+ vlc_object_attach( p_sys->p_opencv, p_vout );
+
+ if (p_vout->p_sys->psz_inner_name)
+ p_sys->p_opencv->p_module =
+ module_Need( p_sys->p_opencv, p_sys->psz_inner_name, 0, 0 );
+
+ if( !p_sys->p_opencv->p_module )
+ {
+ msg_Err( p_vout, "can't open internal opencv filter: %s", p_vout->p_sys->psz_inner_name );
+ p_vout->p_sys->psz_inner_name = NULL;
+ vlc_object_detach( p_sys->p_opencv );
+ vlc_object_destroy( p_sys->p_opencv );
+ p_sys->p_opencv = NULL;
+ }
+
+ /* Try to open the real video output */
+ if (p_sys->i_verbosity > VERB_WARN)
+ msg_Dbg( p_vout, "spawning the real video output" );
+
+ p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
+
+ /* Everything failed */
+ if( p_vout->p_sys->p_vout == NULL )
+ {
+ msg_Err( p_vout, "can't open vout, aborting" );
+ return VLC_EGENERIC;
+ }
+
+ ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
+
+ ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
+
+ ADD_PARENT_CALLBACKS( SendEventsToChild );
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * End: terminate opencv_wrapper video thread output method
+ *****************************************************************************/
+static void End( vout_thread_t *p_vout )
+{
+ int i_index;
+
+ /* Free the fake output buffers we allocated */
+ for( i_index = I_OUTPUTPICTURES ; i_index ; )
+ {
+ i_index--;
+ free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
+ }
+
+ if ( p_vout->p_sys->p_opencv )
+ {
+ //release the internal opencv filter
+ if( p_vout->p_sys->p_opencv->p_module )
+ module_Unneed( p_vout->p_sys->p_opencv, p_vout->p_sys->p_opencv->p_module );
+ vlc_object_detach( p_vout->p_sys->p_opencv );
+ vlc_object_destroy( p_vout->p_sys->p_opencv );
+ p_vout->p_sys->p_opencv = NULL;
+ }
+
+}
+
+/*****************************************************************************
+ * Destroy: destroy opencv_wrapper video thread output method
+ *****************************************************************************
+ * Terminate an output method created by opencv_wrapperCreateOutputMethod
+ *****************************************************************************/
+static void Destroy( vlc_object_t *p_this )
+{
+ vout_thread_t *p_vout = (vout_thread_t *)p_this;
+
+ if( p_vout->p_sys->p_vout )
+ {
+ DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
+ vlc_object_detach( p_vout->p_sys->p_vout );
+ vout_Destroy( p_vout->p_sys->p_vout );
+ }
+
+ DEL_PARENT_CALLBACKS( SendEventsToChild );
+
+ ReleaseImages(p_vout);
+
+ if( p_vout->p_sys->p_image )
+ image_HandlerDelete( p_vout->p_sys->p_image );
+
+ free( p_vout->p_sys );
+}
+
+/*****************************************************************************
+ * ReleaseImages: Release OpenCV images in vout_sys_t.
+ *****************************************************************************/
+static void ReleaseImages(vout_thread_t *p_vout)
+{
+ int i = 0;
+ if (p_vout->p_sys->p_cv_image)
+ {
+ for (i = 0; i < VOUT_MAX_PLANES; i++)
+ {
+ if (p_vout->p_sys->p_cv_image[i])
+ cvReleaseImageHeader(&(p_vout->p_sys->p_cv_image[i]));
+ p_vout->p_sys->p_cv_image[i] = NULL;
+ }
+ }
+ p_vout->p_sys->i_cv_image_size = 0;
+
+ /* Release temp picture_t if it exists */
+ if (p_vout->p_sys->p_to_be_freed)
+ {
+ p_vout->p_sys->p_to_be_freed->pf_release( p_vout->p_sys->p_to_be_freed );
+ p_vout->p_sys->p_to_be_freed = NULL;
+ }
+ if (p_vout->p_sys->i_verbosity > VERB_WARN)
+ msg_Dbg( p_vout, "images released" );
+}
+
+/*****************************************************************************
+ * VlcPictureToIplImage: Convert picture_t to IplImage
+ *****************************************************************************
+ * Converts given picture_t into IplImage(s) according to module config.
+ * IplImage(s) are stored in vout_sys_t.
+ *****************************************************************************/
+static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in )
+{
+ int planes = p_in->i_planes; //num input video planes
+ // input video size
+ CvSize sz = cvSize(abs(p_in->format.i_width), abs(p_in->format.i_height));
+ video_format_t fmt_out = {0};
+ clock_t start, finish; //performance measures
+ double duration;
+ int i = 0;
+ vout_sys_t* p_sys = p_vout->p_sys;
+
+ start = clock();
+
+ //do scale / color conversion according to p_sys config
+ if ((p_sys->f_scale != 1) || (p_sys->i_internal_chroma != CINPUT))
+ {
+ fmt_out = p_in->format;
+
+ //calc the scaled video size
+ fmt_out.i_width = p_in->format.i_width * p_sys->f_scale;
+ fmt_out.i_height = p_in->format.i_height * p_sys->f_scale;
+
+ if (p_sys->i_internal_chroma == RGB)
+ {
+ //rgb2 gives 3 separate planes, this gives 1 interleaved plane
+ //rv24 gives is about 20% faster but gives r&b the wrong way round
+ //and I cant think of an easy way to fix this
+ fmt_out.i_chroma = VLC_FOURCC('R','V','3','2');
+ }
+ else if (p_sys->i_internal_chroma == GREY)
+ {
+ //take the I (gray) plane (video seems to commonly be in this fmt so usually the
+ //conversion does nothing)
+ fmt_out.i_chroma = VLC_FOURCC('I','4','2','0');
+ }
+
+ //convert from the input image
+ p_sys->p_proc_image = image_Convert( p_sys->p_image, p_in,
+ &(p_in->format), &fmt_out );
+
+ if (!p_sys->p_proc_image)
+ {
+ msg_Err(p_vout, "can't convert (unsupported formats?), aborting...");
+ return;
+ }
+
+ p_sys->p_to_be_freed = p_sys->p_proc_image; //remember this so we can free it later
+
+ }
+ else //((p_sys->f_scale != 1) || (p_sys->i_internal_chroma != CINPUT))
+ {
+ //use the input image without conversion
+ p_sys->p_proc_image = p_in;
+ }
+
+ //Convert to the IplImage array that is to be processed.
+ //If there are multiple planes in p_sys->p_proc_image, then 1 IplImage
+ //is created for each plane.
+ planes = p_sys->p_proc_image->i_planes;
+ p_sys->i_cv_image_size = planes;
+ for ( i = 0; i < planes; i++ )
+ {
+ sz = cvSize(abs(p_sys->p_proc_image->p[i].i_visible_pitch /
+ p_sys->p_proc_image->p[i].i_pixel_pitch),
+ abs(p_sys->p_proc_image->p[i].i_visible_lines));
+
+ p_sys->p_cv_image[i] = cvCreateImageHeader(sz, IPL_DEPTH_8U,
+ p_sys->p_proc_image->p[i].i_pixel_pitch);
+
+ cvSetData( p_sys->p_cv_image[i],
+ (char*)(p_sys->p_proc_image->p[i].p_pixels), p_sys->p_proc_image->p[i].i_pitch );
+ }
+
+ //Hack the above opencv image array into a picture_t so that it can be sent to
+ //another video filter
+ p_sys->hacked_pic.p_data_orig = p_sys->p_cv_image;
+ p_sys->hacked_pic.i_planes = planes;
+ p_sys->hacked_pic.format.i_chroma = fmt_out.i_chroma;
+
+ //calculate duration of conversion
+ finish = clock();
+ duration = (double)(finish - start) / CLOCKS_PER_SEC;
+ if (p_sys->i_verbosity > VERB_WARN)
+ msg_Dbg( p_vout, "VlcPictureToIplImageRgb took %2.4f seconds\n", duration );
+}
+
+/*****************************************************************************
+ * Render: displays previously rendered output
+ *****************************************************************************
+ * This function send the currently rendered image to the internal opencv
+ * filter for processing.
+ *****************************************************************************/
+static void Render( vout_thread_t *p_vout, picture_t *p_pic )
+{
+ picture_t *p_outpic = NULL;
+ clock_t start, finish;
+ double duration;
+
+ while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
+ == NULL )
+ {
+ if( p_vout->b_die || p_vout->b_error )
+ { return; }
+ msleep( VOUT_OUTMEM_SLEEP );
+ }
+
+ vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
+
+ start = clock();
+
+ if (p_vout->p_sys->i_wrapper_output == VINPUT) //output = input video
+ {
+ //This copy is a bit unfortunate but image_Convert can't write into an existing image so it is better to copy the
+ //(say) 16bit YUV image here than a 32bit RGB image somehwere else.
+ //It is also not that expensive in time.
+ vout_CopyPicture( p_vout, p_outpic, p_pic );
+ VlcPictureToIplImage( p_vout, p_pic);
+ //pass the image to the internal opencv filter for processing
+ if ((p_vout->p_sys->p_opencv) && (p_vout->p_sys->p_opencv->p_module))
+ p_vout->p_sys->p_opencv->pf_video_filter( p_vout->p_sys->p_opencv, &(p_vout->p_sys->hacked_pic));
+ }
+ else //output = processed video (NONE option not working yet)
+ {
+ VlcPictureToIplImage( p_vout, p_pic);
+ //pass the image to the internal opencv filter for processing
+ if ((p_vout->p_sys->p_opencv) && (p_vout->p_sys->p_opencv->p_module))
+ p_vout->p_sys->p_opencv->pf_video_filter( p_vout->p_sys->p_opencv, &(p_vout->p_sys->hacked_pic));
+ //copy the processed image into the output image
+ if ((p_vout->p_sys->p_proc_image) && (p_vout->p_sys->p_proc_image->p_data))
+ vout_CopyPicture( p_vout, p_outpic, p_vout->p_sys->p_proc_image );
+ }
+
+ //calculate duration
+ finish = clock();
+ duration = (double)(finish - start) / CLOCKS_PER_SEC;
+ if (p_vout->p_sys->i_verbosity > VERB_WARN)
+ msg_Dbg( p_vout, "Render took %2.4f seconds\n", duration );
+
+ ReleaseImages(p_vout);
+ vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
+
+ vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
+ vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
+}
+
+/*****************************************************************************
+ * SendEvents: forward mouse and keyboard events to the parent p_vout
+ *****************************************************************************/
+static int SendEvents( vlc_object_t *p_this, char const *psz_var,
+ vlc_value_t oldval, vlc_value_t newval, void *p_data )
+{
+ var_Set( (vlc_object_t *)p_data, psz_var, newval );
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * SendEventsToChild: forward events to the child/children vout
+ *****************************************************************************/
+static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
+ vlc_value_t oldval, vlc_value_t newval, void *p_data )
+{
+ vout_thread_t *p_vout = (vout_thread_t *)p_this;
+ var_Set( p_vout->p_sys->p_vout, psz_var, newval );
+ return VLC_SUCCESS;
+}
projects / vlc / commitdiff