mirror of
https://code.videolan.org/videolan/vlc
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625 lines
23 KiB
C
625 lines
23 KiB
C
/*****************************************************************************
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* opencv_wrapper.c : OpenCV wrapper video filter
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*****************************************************************************
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* Copyright (C) 2006 the VideoLAN team
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*
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* Authors: Dugal Harris <dugalh@protoclea.co.za>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <cxcore.h>
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#include <cv.h>
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#include <highgui.h>
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <vlc/vlc.h>
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#include <vlc_vout.h>
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#include <math.h>
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#include <time.h>
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#include "vlc_filter.h"
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#include "filter_common.h"
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#include <vlc_charset.h>
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#include "vlc_image.h"
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#include "vlc_input.h"
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#include "vlc_playlist.h"
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static int Create ( vlc_object_t * );
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static void Destroy ( vlc_object_t * );
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static int Init ( vout_thread_t * );
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static void End ( vout_thread_t * );
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static void Render ( vout_thread_t *, picture_t * );
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static int SendEvents( vlc_object_t *, char const *,
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vlc_value_t, vlc_value_t, void * );
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static void ReleaseImages( vout_thread_t *p_vout );
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static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in );
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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static char *chroma_list[] = { "input", "I420", "RGB32"};
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static char *chroma_list_text[] = { N_("Use input chroma unaltered"),
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N_("I420 - first plane is greyscale"), N_("RGB32")};
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static char *output_list[] = { "none", "input", "processed"};
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static char *output_list_text[] = { N_("Don't display any video"),
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N_("Display the input video"), N_("Display the processed video")};
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static char *verbosity_list[] = { "error", "warning", "debug"};
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static char *verbosity_list_text[] = { N_("Show only errors"),
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N_("Show errors and warnings"), N_("Show everything including debug messages")};
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vlc_module_begin();
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set_description( _("OpenCV video filter wrapper") );
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set_shortname( _("OpenCV" ));
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set_category( CAT_VIDEO );
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set_subcategory( SUBCAT_VIDEO_VFILTER );
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set_capability( "video filter", 0 );
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add_shortcut( "opencv_wrapper" );
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set_callbacks( Create, Destroy );
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add_float_with_range( "opencv-scale", 1.0, 0.1, 2.0, NULL,
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N_("Scale factor (0.1-2.0)"),
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N_("Ammount by which to scale the picture before sending it to the internal OpenCV filter"),
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false );
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add_string( "opencv-chroma", "input", NULL,
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N_("OpenCV filter chroma"),
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N_("Chroma to convert picture to before sending it to the internal OpenCV filter"), false);
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change_string_list( chroma_list, chroma_list_text, 0);
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add_string( "opencv-output", "input", NULL,
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N_("Wrapper filter output"),
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N_("Determines what (if any) video is displayed by the wrapper filter"), false);
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change_string_list( output_list, output_list_text, 0);
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add_string( "opencv-verbosity", "error", NULL,
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N_("Wrapper filter verbosity"),
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N_("Determines wrapper filter verbosity level"), false);
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change_string_list( verbosity_list, verbosity_list_text, 0);
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add_string( "opencv-filter-name", "none", NULL,
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N_("OpenCV internal filter name"),
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N_("Name of internal OpenCV plugin filter to use"), false);
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vlc_module_end();
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/*****************************************************************************
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* wrapper_output_t: what video is output
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*****************************************************************************/
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enum wrapper_output_t
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{
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NONE, //not working yet
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VINPUT,
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PROCESSED
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};
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/*****************************************************************************
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* internal_chroma_t: what chroma is sent to the internal opencv filter
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*****************************************************************************/
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enum internal_chroma_t
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{
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CINPUT,
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GREY,
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RGB
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};
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/*****************************************************************************
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* verbosity_t:
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*****************************************************************************/
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enum verbosity_t
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{
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VERB_ERROR,
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VERB_WARN,
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VERB_DEBUG
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};
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/*****************************************************************************
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* vout_sys_t: opencv_wrapper video output method descriptor
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*****************************************************************************
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* This structure is part of the video output thread descriptor.
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* It describes the opencv_wrapper specific properties of an output thread.
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*****************************************************************************/
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struct vout_sys_t
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{
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vout_thread_t *p_vout;
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image_handler_t *p_image;
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int i_cv_image_size;
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picture_t *p_proc_image;
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picture_t *p_to_be_freed;
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float f_scale;
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int i_wrapper_output;
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int i_internal_chroma;
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int i_verbosity;
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IplImage *p_cv_image[VOUT_MAX_PLANES];
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filter_t *p_opencv;
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char* psz_inner_name;
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picture_t hacked_pic;
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};
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/*****************************************************************************
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* Control: control facility for the vout (forwards to child vout)
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*****************************************************************************/
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static int Control( vout_thread_t *p_vout, int i_query, va_list args )
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{
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return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
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}
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/*****************************************************************************
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* Create: allocates opencv_wrapper video thread output method
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*****************************************************************************
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* This function allocates and initializes a opencv_wrapper vout method.
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*****************************************************************************/
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static int Create( vlc_object_t *p_this )
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{
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vout_thread_t *p_vout = (vout_thread_t *)p_this;
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char *psz_chroma, *psz_output, *psz_verbosity;
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int i = 0;
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/* Allocate structure */
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p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
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if( p_vout->p_sys == NULL )
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{
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msg_Err( p_vout, "out of memory" );
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return VLC_ENOMEM;
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}
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/* Init structure */
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p_vout->p_sys->p_image = image_HandlerCreate( p_vout );
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for (i = 0; i < VOUT_MAX_PLANES; i++)
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p_vout->p_sys->p_cv_image[i] = NULL;
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p_vout->p_sys->p_proc_image = NULL;
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p_vout->p_sys->p_to_be_freed = NULL;
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p_vout->p_sys->i_cv_image_size = 0;
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p_vout->pf_init = Init;
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p_vout->pf_end = End;
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p_vout->pf_manage = NULL;
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p_vout->pf_render = Render;
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p_vout->pf_display = NULL;
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p_vout->pf_control = Control;
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/* Retrieve and apply config */
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if( !(psz_chroma = config_GetPsz( p_vout, "opencv-chroma" )) )
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{
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msg_Err( p_vout, "configuration variable %s empty, using 'grey'",
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"opencv-chroma" );
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p_vout->p_sys->i_internal_chroma = GREY;
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}
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else
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{
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if( !strcmp( psz_chroma, "input" ) )
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p_vout->p_sys->i_internal_chroma = CINPUT;
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else if( !strcmp( psz_chroma, "I420" ) )
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p_vout->p_sys->i_internal_chroma = GREY;
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else if( !strcmp( psz_chroma, "RGB32" ) )
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p_vout->p_sys->i_internal_chroma = RGB;
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else
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{
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msg_Err( p_vout, "no valid opencv-chroma provided, using 'grey'" );
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p_vout->p_sys->i_internal_chroma = GREY;
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}
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}
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free( psz_chroma);
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if( !(psz_output = config_GetPsz( p_vout, "opencv-output" )) )
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{
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msg_Err( p_vout, "configuration variable %s empty, using 'input'",
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"opencv-output" );
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p_vout->p_sys->i_wrapper_output = VINPUT;
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}
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else
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{
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if( !strcmp( psz_output, "none" ) )
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p_vout->p_sys->i_wrapper_output = NONE;
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else if( !strcmp( psz_output, "input" ) )
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p_vout->p_sys->i_wrapper_output = VINPUT;
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else if( !strcmp( psz_output, "processed" ) )
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p_vout->p_sys->i_wrapper_output = PROCESSED;
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else
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{
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msg_Err( p_vout, "no valid opencv-output provided, using 'input'" );
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p_vout->p_sys->i_wrapper_output = VINPUT;
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}
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}
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free( psz_output);
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if( !(psz_verbosity = config_GetPsz( p_vout, "opencv-verbosity" )) )
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{
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msg_Err( p_vout, "configuration variable %s empty, using 'input'",
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"opencv-verbosity" );
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p_vout->p_sys->i_verbosity = VERB_ERROR;
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}
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else
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{
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if( !strcmp( psz_verbosity, "error" ) )
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p_vout->p_sys->i_verbosity = VERB_ERROR;
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else if( !strcmp( psz_verbosity, "warning" ) )
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p_vout->p_sys->i_verbosity = VERB_WARN;
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else if( !strcmp( psz_verbosity, "debug" ) )
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p_vout->p_sys->i_verbosity = VERB_DEBUG;
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else
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{
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msg_Err( p_vout, "no valid opencv-verbosity provided, using 'error'" );
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p_vout->p_sys->i_verbosity = VERB_ERROR;
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}
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}
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free( psz_verbosity);
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p_vout->p_sys->psz_inner_name = config_GetPsz( p_vout, "opencv-filter-name" );
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p_vout->p_sys->f_scale =
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config_GetFloat( p_vout, "opencv-scale" );
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if (p_vout->p_sys->i_verbosity > VERB_WARN)
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msg_Info(p_vout, "Configuration: opencv-scale: %f, opencv-chroma: %d, "
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"opencv-output: %d, opencv-verbosity %d, opencv-filter %s",
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p_vout->p_sys->f_scale,
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p_vout->p_sys->i_internal_chroma,
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p_vout->p_sys->i_wrapper_output,
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p_vout->p_sys->i_verbosity,
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p_vout->p_sys->psz_inner_name);
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* Init: initialize opencv_wrapper video thread output method
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*****************************************************************************/
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static int Init( vout_thread_t *p_vout )
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{
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int i_index;
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picture_t *p_pic;
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video_format_t fmt;
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vout_sys_t *p_sys = p_vout->p_sys;
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I_OUTPUTPICTURES = 0;
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/* Initialize the output video format */
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memset( &fmt, 0, sizeof(video_format_t) );
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p_vout->output.i_chroma = p_vout->render.i_chroma;
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p_vout->output.i_width = p_vout->render.i_width;
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p_vout->output.i_height = p_vout->render.i_height;
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p_vout->output.i_aspect = p_vout->render.i_aspect;
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p_vout->fmt_out = p_vout->fmt_in; //set to input video format
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fmt = p_vout->fmt_out;
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if (p_sys->i_wrapper_output == PROCESSED) //set to processed video format
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{
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fmt.i_width = fmt.i_width * p_sys->f_scale;
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fmt.i_height = fmt.i_height * p_sys->f_scale;
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fmt.i_visible_width = fmt.i_visible_width * p_sys->f_scale;
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fmt.i_visible_height = fmt.i_visible_height * p_sys->f_scale;
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fmt.i_x_offset = fmt.i_x_offset * p_sys->f_scale;
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fmt.i_y_offset = fmt.i_y_offset * p_sys->f_scale;
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if (p_sys->i_internal_chroma == GREY)
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fmt.i_chroma = VLC_FOURCC('I','4','2','0');
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else if (p_sys->i_internal_chroma == RGB)
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fmt.i_chroma = VLC_FOURCC('R','V','3','2');
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}
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/* Load the internal opencv filter */
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/* We don't need to set up video formats for this filter as it not actually using a picture_t */
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p_sys->p_opencv = vlc_object_create( p_vout, sizeof(filter_t) );
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vlc_object_attach( p_sys->p_opencv, p_vout );
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if (p_vout->p_sys->psz_inner_name)
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p_sys->p_opencv->p_module =
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module_Need( p_sys->p_opencv, p_sys->psz_inner_name, 0, 0 );
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if( !p_sys->p_opencv->p_module )
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{
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msg_Err( p_vout, "can't open internal opencv filter: %s", p_vout->p_sys->psz_inner_name );
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p_vout->p_sys->psz_inner_name = NULL;
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vlc_object_detach( p_sys->p_opencv );
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vlc_object_release( p_sys->p_opencv );
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p_sys->p_opencv = NULL;
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}
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/* Try to open the real video output */
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if (p_sys->i_verbosity > VERB_WARN)
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msg_Dbg( p_vout, "spawning the real video output" );
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p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
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/* Everything failed */
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if( p_vout->p_sys->p_vout == NULL )
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{
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msg_Err( p_vout, "can't open vout, aborting" );
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return VLC_EGENERIC;
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}
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ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
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ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
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ADD_PARENT_CALLBACKS( SendEventsToChild );
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* End: terminate opencv_wrapper video thread output method
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*****************************************************************************/
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static void End( vout_thread_t *p_vout )
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{
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int i_index;
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/* Free the fake output buffers we allocated */
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for( i_index = I_OUTPUTPICTURES ; i_index ; )
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{
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i_index--;
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free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
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}
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if ( p_vout->p_sys->p_opencv )
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{
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//release the internal opencv filter
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if( p_vout->p_sys->p_opencv->p_module )
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module_Unneed( p_vout->p_sys->p_opencv, p_vout->p_sys->p_opencv->p_module );
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vlc_object_detach( p_vout->p_sys->p_opencv );
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vlc_object_release( p_vout->p_sys->p_opencv );
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p_vout->p_sys->p_opencv = NULL;
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}
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}
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/*****************************************************************************
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* Destroy: destroy opencv_wrapper video thread output method
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*****************************************************************************
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* Terminate an output method created by opencv_wrapperCreateOutputMethod
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*****************************************************************************/
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static void Destroy( vlc_object_t *p_this )
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{
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vout_thread_t *p_vout = (vout_thread_t *)p_this;
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if( p_vout->p_sys->p_vout )
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{
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DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
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vlc_object_detach( p_vout->p_sys->p_vout );
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vout_Destroy( p_vout->p_sys->p_vout );
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}
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DEL_PARENT_CALLBACKS( SendEventsToChild );
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ReleaseImages(p_vout);
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if( p_vout->p_sys->p_image )
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image_HandlerDelete( p_vout->p_sys->p_image );
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free( p_vout->p_sys );
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}
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/*****************************************************************************
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* ReleaseImages: Release OpenCV images in vout_sys_t.
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*****************************************************************************/
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static void ReleaseImages(vout_thread_t *p_vout)
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{
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int i = 0;
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if (p_vout->p_sys->p_cv_image)
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{
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for (i = 0; i < VOUT_MAX_PLANES; i++)
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{
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if (p_vout->p_sys->p_cv_image[i])
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cvReleaseImageHeader(&(p_vout->p_sys->p_cv_image[i]));
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p_vout->p_sys->p_cv_image[i] = NULL;
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}
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}
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p_vout->p_sys->i_cv_image_size = 0;
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/* Release temp picture_t if it exists */
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if (p_vout->p_sys->p_to_be_freed)
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{
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p_vout->p_sys->p_to_be_freed->pf_release( p_vout->p_sys->p_to_be_freed );
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p_vout->p_sys->p_to_be_freed = NULL;
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}
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if (p_vout->p_sys->i_verbosity > VERB_WARN)
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msg_Dbg( p_vout, "images released" );
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}
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/*****************************************************************************
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* VlcPictureToIplImage: Convert picture_t to IplImage
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*****************************************************************************
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* Converts given picture_t into IplImage(s) according to module config.
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* IplImage(s) are stored in vout_sys_t.
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*****************************************************************************/
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static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in )
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{
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int planes = p_in->i_planes; //num input video planes
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// input video size
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CvSize sz = cvSize(abs(p_in->format.i_width), abs(p_in->format.i_height));
|
|
video_format_t fmt_out;
|
|
clock_t start, finish; //performance measures
|
|
double duration;
|
|
int i = 0;
|
|
vout_sys_t* p_sys = p_vout->p_sys;
|
|
|
|
memset( &fmt_out, 0, sizeof(video_format_t) );
|
|
|
|
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;
|
|
}
|