[vlc-devel] [PATCH 1/7] opencv_wrapper: Port to video filter2
Edward Wang
edward.c.wang at compdigitec.com
Thu Aug 9 21:19:09 CEST 2012
An update to the six-year-old, unmaintained filter... :)
---
modules/video_filter/opencv_wrapper.c | 378 ++++++++++++---------------------
1 files changed, 140 insertions(+), 238 deletions(-)
diff --git a/modules/video_filter/opencv_wrapper.c b/modules/video_filter/opencv_wrapper.c
index 1c7650d..7400351 100644
--- a/modules/video_filter/opencv_wrapper.c
+++ b/modules/video_filter/opencv_wrapper.c
@@ -1,9 +1,11 @@
/*****************************************************************************
* opencv_wrapper.c : OpenCV wrapper video filter
*****************************************************************************
- * Copyright (C) 2006 the VideoLAN team
+ * Copyright (C) 2006-2012 the VideoLAN team
+ * Copyright (C) 2012 Edward Wang
*
* Authors: Dugal Harris <dugalh at protoclea.co.za>
+ * Edward Wang <edward.c.wang at compdigitec.com>
*
* 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
@@ -39,23 +41,21 @@
#include <vlc_filter.h>
#include <vlc_image.h>
#include <vlc_input.h>
+#include "filter_picture.h"
#include <cxcore.h>
#include <cv.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 picture_t* Filter( filter_t*, picture_t* );
-static void ReleaseImages( vout_thread_t *p_vout );
-static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in );
+static void ReleaseImages( filter_t* p_filter );
+static void VlcPictureToIplImage( filter_t* p_filter, picture_t* p_in );
/*****************************************************************************
* Module descriptor
@@ -78,7 +78,7 @@ vlc_module_begin ()
set_shortname( N_("OpenCV" ))
set_category( CAT_VIDEO )
set_subcategory( SUBCAT_VIDEO_VFILTER )
- set_capability( "video filter", 0 )
+ set_capability( "video filter2", 0 )
add_shortcut( "opencv_wrapper" )
set_callbacks( Create, Destroy )
add_float_with_range( "opencv-scale", 1.0, 0.1, 2.0,
@@ -108,7 +108,7 @@ vlc_module_end ()
*****************************************************************************/
enum wrapper_output_t
{
- NONE, //not working yet
+ NONE,
VINPUT,
PROCESSED
};
@@ -134,15 +134,13 @@ enum verbosity_t
};
/*****************************************************************************
- * vout_sys_t: opencv_wrapper video output method descriptor
+ * filter_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
+struct filter_sys_t
{
- vout_thread_t *p_vout;
-
image_handler_t *p_image;
int i_cv_image_size;
@@ -165,264 +163,178 @@ struct vout_sys_t
};
/*****************************************************************************
- * 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;
+ filter_t* p_filter = (filter_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 )
+ p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
+ if( p_filter->p_sys == NULL )
return VLC_ENOMEM;
/* Init structure */
- p_vout->p_sys->p_image = image_HandlerCreate( p_vout );
+ p_filter->p_sys->p_image = image_HandlerCreate( p_filter );
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;
+ p_filter->p_sys->p_cv_image[i] = NULL;
+ p_filter->p_sys->p_proc_image = NULL;
+ p_filter->p_sys->p_to_be_freed = NULL;
+ p_filter->p_sys->i_cv_image_size = 0;
/* Retrieve and apply config */
- psz_chroma = var_InheritString( p_vout, "opencv-chroma" );
+ psz_chroma = var_InheritString( p_filter, "opencv-chroma" );
if( psz_chroma == NULL )
{
- msg_Err( p_vout, "configuration variable %s empty, using 'grey'",
+ msg_Err( p_filter, "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;
- }
+ p_filter->p_sys->i_internal_chroma = GREY;
+ } else if( !strcmp( psz_chroma, "input" ) )
+ p_filter->p_sys->i_internal_chroma = CINPUT;
+ else if( !strcmp( psz_chroma, "I420" ) )
+ p_filter->p_sys->i_internal_chroma = GREY;
+ else if( !strcmp( psz_chroma, "RGB32" ) )
+ p_filter->p_sys->i_internal_chroma = RGB;
+ else {
+ msg_Err( p_filter, "no valid opencv-chroma provided, using 'grey'" );
+ p_filter->p_sys->i_internal_chroma = GREY;
}
- free( psz_chroma);
- psz_output = var_InheritString( p_vout, "opencv-output" );
+ free( psz_chroma );
+
+ psz_output = var_InheritString( p_filter, "opencv-output" );
if( psz_output == NULL )
{
- msg_Err( p_vout, "configuration variable %s empty, using 'input'",
+ msg_Err( p_filter, "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;
- }
+ p_filter->p_sys->i_wrapper_output = VINPUT;
+ } else if( !strcmp( psz_output, "none" ) )
+ p_filter->p_sys->i_wrapper_output = NONE;
+ else if( !strcmp( psz_output, "input" ) )
+ p_filter->p_sys->i_wrapper_output = VINPUT;
+ else if( !strcmp( psz_output, "processed" ) )
+ p_filter->p_sys->i_wrapper_output = PROCESSED;
+ else {
+ msg_Err( p_filter, "no valid opencv-output provided, using 'input'" );
+ p_filter->p_sys->i_wrapper_output = VINPUT;
}
- free( psz_output);
+ free( psz_output );
- psz_verbosity = var_InheritString( p_vout, "opencv-verbosity" );
+ psz_verbosity = var_InheritString( p_filter, "opencv-verbosity" );
if( psz_verbosity == NULL )
{
- msg_Err( p_vout, "configuration variable %s empty, using 'input'",
+ msg_Err( p_filter, "configuration variable %s empty, using 'input'",
"opencv-verbosity" );
- p_vout->p_sys->i_verbosity = VERB_ERROR;
+ p_filter->p_sys->i_verbosity = VERB_ERROR;
}
else
{
if( !strcmp( psz_verbosity, "error" ) )
- p_vout->p_sys->i_verbosity = VERB_ERROR;
+ p_filter->p_sys->i_verbosity = VERB_ERROR;
else if( !strcmp( psz_verbosity, "warning" ) )
- p_vout->p_sys->i_verbosity = VERB_WARN;
+ p_filter->p_sys->i_verbosity = VERB_WARN;
else if( !strcmp( psz_verbosity, "debug" ) )
- p_vout->p_sys->i_verbosity = VERB_DEBUG;
+ p_filter->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;
+ msg_Err( p_filter, "no valid opencv-verbosity provided, using 'error'" );
+ p_filter->p_sys->i_verbosity = VERB_ERROR;
}
}
free( psz_verbosity);
- p_vout->p_sys->psz_inner_name =
- var_InheritString( p_vout, "opencv-filter-name" );
- p_vout->p_sys->f_scale =
- var_InheritFloat( p_vout, "opencv-scale" );
+ p_filter->p_sys->psz_inner_name =
+ var_InheritString( p_filter, "opencv-filter-name" );
+ p_filter->p_sys->f_scale =
+ var_InheritFloat( p_filter, "opencv-scale" );
- if (p_vout->p_sys->i_verbosity > VERB_WARN)
- msg_Info(p_vout, "Configuration: opencv-scale: %f, opencv-chroma: %d, "
+ if (p_filter->p_sys->i_verbosity > VERB_WARN)
+ msg_Info(p_filter, "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 )
-{
- video_format_t fmt;
- vout_sys_t *p_sys = p_vout->p_sys;
- I_OUTPUTPICTURES = 0;
-
- /* Initialize the output video format */
- memset( &fmt, 0, sizeof(video_format_t) );
- 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_CODEC_I420;
- else if (p_sys->i_internal_chroma == RGB)
- fmt.i_chroma = VLC_CODEC_RGB32;
- }
+ p_filter->p_sys->f_scale,
+ p_filter->p_sys->i_internal_chroma,
+ p_filter->p_sys->i_wrapper_output,
+ p_filter->p_sys->i_verbosity,
+ p_filter->p_sys->psz_inner_name);
/* 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) );
+ p_filter->p_sys->p_opencv = vlc_object_create( p_filter, sizeof(filter_t) );
+ p_filter->p_sys->p_opencv->p_module = NULL;
- 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, NULL, false );
+ if (p_filter->p_sys->psz_inner_name)
+ p_filter->p_sys->p_opencv->p_module =
+ module_need( p_filter->p_sys->p_opencv, p_filter->p_sys->psz_inner_name, NULL, false );
- if( !p_sys->p_opencv->p_module )
+ if( !p_filter->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_release( p_sys->p_opencv );
- p_sys->p_opencv = NULL;
- }
+ msg_Err( p_filter, "can't open internal opencv filter: %s", p_filter->p_sys->psz_inner_name );
+ p_filter->p_sys->psz_inner_name = NULL;
+ vlc_object_release( p_filter->p_sys->p_opencv );
+ p_filter->p_sys->p_opencv = NULL;
+ free( p_filter->p_sys );
- /* 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;
+ return VLC_ENOMOD;
}
- vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );
+ /* Try to open the real video output */
+ if (p_filter->p_sys->i_verbosity > VERB_WARN)
+ msg_Dbg( p_filter, "spawning the real video output" );
- vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, NULL );
+ p_filter->pf_video_filter = Filter;
return VLC_SUCCESS;
}
/*****************************************************************************
- * End: terminate opencv_wrapper video thread output method
- *****************************************************************************/
-static void End( vout_thread_t *p_vout )
-{
- vout_sys_t *p_sys = p_vout->p_sys;
-
- vout_filter_DelChild( p_vout, p_sys->p_vout, NULL );
- vout_CloseAndRelease( p_sys->p_vout );
-
- vout_filter_ReleaseDirectBuffers( p_vout );
-
- if( p_sys->p_opencv )
- {
- //release the internal opencv filter
- if( p_sys->p_opencv->p_module )
- module_unneed( p_sys->p_opencv, p_sys->p_opencv->p_module );
- vlc_object_release( p_sys->p_opencv );
- 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;
+ filter_t* p_filter = (filter_t*)p_this;
+ ReleaseImages( p_filter );
- ReleaseImages(p_vout);
+ // Release the internal OpenCV filter.
+ module_unneed( p_filter->p_sys->p_opencv, p_filter->p_sys->p_opencv->p_module );
+ vlc_object_release( p_filter->p_sys->p_opencv );
+ p_filter->p_sys->p_opencv = NULL;
- if( p_vout->p_sys->p_image )
- image_HandlerDelete( p_vout->p_sys->p_image );
-
- free( p_vout->p_sys );
+ free( p_filter->p_sys );
}
/*****************************************************************************
- * ReleaseImages: Release OpenCV images in vout_sys_t.
+ * ReleaseImages: Release OpenCV images in filter_sys_t.
*****************************************************************************/
-static void ReleaseImages(vout_thread_t *p_vout)
+static void ReleaseImages(filter_t *p_filter)
{
+ filter_sys_t* p_sys = p_filter->p_sys;
+
int i = 0;
- if (p_vout->p_sys->p_cv_image)
+ if (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;
+ if (p_sys->p_cv_image[i])
+ cvReleaseImageHeader(&(p_sys->p_cv_image[i]));
+ p_sys->p_cv_image[i] = NULL;
}
}
- p_vout->p_sys->i_cv_image_size = 0;
+ p_sys->i_cv_image_size = 0;
/* Release temp picture_t if it exists */
- if (p_vout->p_sys->p_to_be_freed)
+ if (p_sys->p_to_be_freed)
{
- picture_Release( p_vout->p_sys->p_to_be_freed );
- p_vout->p_sys->p_to_be_freed = NULL;
+ picture_Release( p_sys->p_to_be_freed );
+ p_sys->p_to_be_freed = NULL;
}
- if (p_vout->p_sys->i_verbosity > VERB_WARN)
- msg_Dbg( p_vout, "images released" );
+ if (p_sys->i_verbosity > VERB_WARN)
+ msg_Dbg( p_filter, "images released" );
}
/*****************************************************************************
@@ -431,7 +343,7 @@ static void ReleaseImages(vout_thread_t *p_vout)
* 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 )
+static void VlcPictureToIplImage( filter_t* p_filter, picture_t* p_in )
{
int planes = p_in->i_planes; //num input video planes
// input video size
@@ -440,7 +352,7 @@ static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in )
clock_t start, finish; //performance measures
double duration;
int i = 0;
- vout_sys_t* p_sys = p_vout->p_sys;
+ filter_sys_t* p_sys = p_filter->p_sys;
memset( &fmt_out, 0, sizeof(video_format_t) );
@@ -475,7 +387,7 @@ static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in )
if (!p_sys->p_proc_image)
{
- msg_Err(p_vout, "can't convert (unsupported formats?), aborting...");
+ msg_Err(p_filter, "can't convert (unsupported formats?), aborting...");
return;
}
@@ -515,65 +427,55 @@ static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in )
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", duration );
+ msg_Dbg( p_filter, "VlcPictureToIplImageRgb took %2.4f seconds", duration );
}
/*****************************************************************************
- * Render: displays previously rendered output
+ * Filter: 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 )
+static picture_t* Filter( filter_t* p_filter, picture_t* p_pic )
{
- picture_t *p_outpic = NULL;
- clock_t start, finish;
- double duration;
+ picture_t* p_outpic = filter_NewPicture( p_filter );
- while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
- == NULL )
- {
- if( !vlc_object_alive (p_vout) || p_vout->b_error )
- { return; }
- msleep( VOUT_OUTMEM_SLEEP );
- }
+ clock_t start = clock();
- vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
+ // Make a copy if we want to show the original input
+ if (p_filter->p_sys->i_wrapper_output == VINPUT)
+ picture_Copy( p_outpic, p_pic );
- start = clock();
+ VlcPictureToIplImage( p_filter, p_pic );
+ // Pass the image (as a pointer to the first IplImage*) to the
+ // internal OpenCV filter for processing.
+ p_filter->p_sys->p_opencv->pf_video_filter( p_filter->p_sys->p_opencv, &(p_filter->p_sys->p_cv_image[0]) );
- 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.
- picture_Copy( 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->i_planes > 0))
- picture_Copy( p_outpic, p_vout->p_sys->p_proc_image );
+ if(p_filter->p_sys->i_wrapper_output == PROCESSED) {
+ // Processed video
+ if ((p_filter->p_sys->p_proc_image) && (p_filter->p_sys->p_proc_image->i_planes > 0)) {
+ picture_CopyPixels( p_outpic, p_filter->p_sys->p_proc_image );
+ CopyInfoAndRelease( p_outpic, p_pic );
+ }
}
+ ReleaseImages( p_filter );
+
//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", duration );
-
- ReleaseImages(p_vout);
- p_outpic->date = p_pic->date;
-
- vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
- vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
+ clock_t finish = clock();
+ double duration = (double)(finish - start) / CLOCKS_PER_SEC;
+ if (p_filter->p_sys->i_verbosity > VERB_WARN)
+ msg_Dbg( p_filter, "Filter took %2.4f seconds", duration );
+
+ if( p_filter->p_sys->i_wrapper_output == VINPUT ) {
+ picture_Release( p_pic );
+ return p_outpic;
+ } else if( p_filter->p_sys->i_wrapper_output == PROCESSED ) {
+ return p_outpic;
+ } else { // NONE
+ picture_Release( p_pic );
+ picture_Release( p_outpic );
+ return NULL;
+ }
}
--
1.7.5.4
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