X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=modules%2Fvideo_filter%2Fopencv_example.cpp;h=ae3af05c5ff9e01ce88ca615e499b9d67f23659d;hb=c1ba21414ea76dc1872dcec9b584700654fe4cb3;hp=fa5825731f7297c3a49dd65c1d7032fe41d42ff9;hpb=12efe797994da9153a6c1275f28631888d3d2a80;p=vlc diff --git a/modules/video_filter/opencv_example.cpp b/modules/video_filter/opencv_example.cpp index fa5825731f..ae3af05c5f 100644 --- a/modules/video_filter/opencv_example.cpp +++ b/modules/video_filter/opencv_example.cpp @@ -1,42 +1,48 @@ /***************************************************************************** - * opencv_example.cpp : Example OpenCV internal video filter + * 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 + * Copyright (C) 2006-2012 VLC authors and VideoLAN + * Copyright (C) 2012 Edward Wang * * Authors: Dugal Harris + * Edward Wang * - * 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 + * 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 General Public License for more details. + * 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 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. + * 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 *****************************************************************************/ -#include -#include -#include +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif -#include -#include -#include "vlc_filter.h" -#include "filter_common.h" -#include "vlc_image.h" +#include +#include +#include +#include +#include #include "filter_event_info.h" +#include +#include +#include + /***************************************************************************** * filter_sys_t : filter descriptor *****************************************************************************/ @@ -59,20 +65,20 @@ static picture_t *Filter( filter_t *, picture_t * ); /***************************************************************************** * Module descriptor *****************************************************************************/ -vlc_module_begin(); - set_description( _("OpenCV face detection example filter") ); - set_shortname( _( "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(); +vlc_module_begin () + set_description( N_("OpenCV face detection example filter") ) + set_shortname( N_( "OpenCV example" )) + set_capability( "opencv internal filter", 1 ) + add_shortcut( "opencv_example" ) + + set_category( CAT_VIDEO ) + set_subcategory( SUBCAT_VIDEO_VFILTER ) + set_callbacks( OpenFilter, CloseFilter ) + + add_string( "opencv-haarcascade-file", "c:\\haarcascade_frontalface_alt.xml", + N_("Haar cascade filename"), + N_("Name of XML file containing Haar cascade description"), false); +vlc_module_end () /***************************************************************************** * OpenFilter: probe the filter and return score @@ -86,11 +92,10 @@ static int OpenFilter( vlc_object_t *p_this ) 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; + return VLC_ENOMEM; } - - //init the video_filter_event_info_t struct + + //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; @@ -99,17 +104,18 @@ static int OpenFilter( vlc_object_t *p_this ) //create the VIDEO_FILTER_EVENT_VARIABLE vlc_value_t val; - if (var_Create( p_filter->p_libvlc_global, 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); - + 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", VIDEO_FILTER_EVENT_VARIABLE); + val.p_address = &(p_sys->event_info); - if (var_Set( p_filter->p_libvlc_global, VIDEO_FILTER_EVENT_VARIABLE, val )!=VLC_SUCCESS) - msg_Err( p_filter, "Could not set %s\n", VIDEO_FILTER_EVENT_VARIABLE); + if (var_Set( p_filter->p_libvlc, VIDEO_FILTER_EVENT_VARIABLE, val )!=VLC_SUCCESS) + msg_Err( p_filter, "Could not set %s", 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); + char* filename = var_InheritString( p_filter, "opencv-haarcascade-file" ); + p_sys->p_cascade = (CvHaarClassifierCascade*)cvLoad( filename, 0, 0, 0 ); + p_sys->p_storage = cvCreateMemStorage(0); + free( filename ); return VLC_SUCCESS; } @@ -121,47 +127,36 @@ 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( p_sys->p_cascade ) + cvReleaseHaarClassifierCascade( &p_sys->p_cascade ); - if (NULL != p_filter->p_sys->event_info.p_region) - free(p_filter->p_sys->event_info.p_region); + if( p_sys->p_storage ) + cvReleaseMemStorage( &p_sys->p_storage ); + free( p_sys->event_info.p_region ); free( p_sys ); - var_Destroy( p_filter->p_libvlc_global, VIDEO_FILTER_EVENT_VARIABLE); + 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; - + filter_sys_t *p_sys = p_filter->p_sys; + 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; + p_img = (IplImage**) p_pic; //check the image array for validity if ((!p_img[0])) //1st plane is 'I' i.e. greyscale @@ -169,67 +164,49 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_pic ) 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 ) + cvClearMemStorage(p_sys->p_storage); + if( 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, + CvSeq *faces = cvHaarDetectObjects( p_img[0], p_sys->p_cascade, + 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" ); + //msg_Dbg( p_filter, "Found %d face(s)", faces->total ); + free( p_sys->event_info.p_region ); + p_sys->event_info.p_region = (video_filter_region_info_t*) + calloc( faces->total, sizeof(video_filter_region_info_t)); + if( !p_sys->event_info.p_region ) 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; + 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 ); + CvRect *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"; + *(CvRect*)(&(p_sys->event_info.p_region[i])) = *r; + p_sys->event_info.p_region[i].i_id = p_sys->i_id++; + 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_global, VIDEO_FILTER_EVENT_VARIABLE, VLC_VAR_TRIGGER_CALLBACKS, NULL, NULL ); + var_TriggerCallback( p_filter->p_libvlc, VIDEO_FILTER_EVENT_VARIABLE ); } else msg_Err( p_filter, "No cascade - is opencv-haarcascade-file valid?" ); - + return p_pic; }