Blending - Added blend benchmarking filter

Blending - Added blend benchmarking filter

modules/video_filter/blendbench.c

+/*****************************************************************************
+ * blendbench.c : blending benchmark plugin for vlc
+ *****************************************************************************
+ * Copyright (C) 2007 the VideoLAN team
+ * $Id$
+ *
+ * Author: Søren Bøg <avacore@videolan.org>
+ *
+ * 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 <errno.h>
+#include <stdlib.h>                                      /* malloc(), free() */
+#include <string.h>
+#include <math.h>
+
+#include <vlc/vlc.h>
+#include <vlc_sout.h>
+#include <vlc_vout.h>
+
+#include "vlc_filter.h"
+#include "vlc_image.h"
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int Create( vlc_object_t * );
+static void Destroy( vlc_object_t * );
+
+static picture_t *Filter( filter_t *, picture_t * );
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+
+#define LOOPS_TEXT N_("Number of time to blend")
+#define LOOPS_LONGTEXT N_("The number of time the blend will be performed")
+
+#define ALPHA_TEXT N_("Alpha of the blended image")
+#define ALPHA_LONGTEXT N_("Alpha with which the blend image is blended")
+
+#define BASE_IMAGE_TEXT N_("Image to be blended onto")
+#define BASE_IMAGE_LONGTEXT N_("The image which will be used to blend onto")
+
+#define BASE_CHROMA_TEXT N_("Chroma for the base image")
+#define BASE_CHROMA_LONGTEXT N_("Chroma which the base image will be loaded in")
+
+#define BLEND_IMAGE_TEXT N_("Image which will be blended.")
+#define BLEND_IMAGE_LONGTEXT N_("The image blended onto the base image")
+
+#define BLEND_CHROMA_TEXT N_("Chroma for the blend image")
+#define BLEND_CHROMA_LONGTEXT N_("Chroma which the blend image will be loaded" \
+                                 "in")
+
+#define CFG_PREFIX "blendbench-"
+
+vlc_module_begin();
+    set_description( _("Blending benchmark filter") );
+    set_shortname( _("blendbench" ));
+    set_category( CAT_VIDEO );
+    set_subcategory( SUBCAT_VIDEO_VFILTER );
+    set_capability( "video filter2", 0 );
+
+    set_section( N_("Benchmarking"), NULL );
+    add_integer( CFG_PREFIX "loops", 1000, NULL, LOOPS_TEXT,
+              LOOPS_LONGTEXT, VLC_FALSE );
+    add_integer_with_range( CFG_PREFIX "alpha", 128, 0, 255, NULL, ALPHA_TEXT,
+              ALPHA_LONGTEXT, VLC_FALSE );
+
+    set_section( N_("Base image"), NULL );
+    add_file( CFG_PREFIX "base-image", NULL, NULL, BASE_IMAGE_TEXT,
+              BASE_IMAGE_LONGTEXT, VLC_FALSE );
+    add_string( CFG_PREFIX "base-chroma", "I420", NULL, BASE_CHROMA_TEXT,
+              BASE_CHROMA_LONGTEXT, VLC_FALSE );
+
+    set_section( N_("Blend image"), NULL );
+    add_file( CFG_PREFIX "blend-image", NULL, NULL, BLEND_IMAGE_TEXT,
+              BLEND_IMAGE_LONGTEXT, VLC_FALSE );
+    add_string( CFG_PREFIX "blend-chroma", "YUVA", NULL, BLEND_CHROMA_TEXT,
+              BLEND_CHROMA_LONGTEXT, VLC_FALSE );
+
+    set_callbacks( Create, Destroy );
+vlc_module_end();
+
+static const char *ppsz_filter_options[] = {
+    "loops", "alpha", "base-image", "base-chroma", "blend-image",
+    "blend-chroma", NULL
+};
+
+/*****************************************************************************
+ * filter_sys_t: filter method descriptor
+ *****************************************************************************/
+struct filter_sys_t
+{
+    vlc_bool_t b_done;
+    int i_loops, i_alpha;
+
+    picture_t *p_base_image;
+    picture_t *p_blend_image;
+
+    vlc_fourcc_t i_base_chroma;
+    vlc_fourcc_t i_blend_chroma;
+};
+
+static int LoadImage( vlc_object_t *p_this, picture_t **pp_pic,
+                       vlc_fourcc_t i_chroma, char *psz_file, const char *psz_name )
+{
+    image_handler_t *p_image;
+    video_format_t fmt_in, fmt_out;
+
+    memset( &fmt_in, 0, sizeof(video_format_t) );
+    memset( &fmt_out, 0, sizeof(video_format_t) );
+
+    fmt_out.i_chroma = i_chroma;
+    p_image = image_HandlerCreate( p_this );
+    *pp_pic = image_ReadUrl( p_image, psz_file, &fmt_in, &fmt_out );
+    image_HandlerDelete( p_image );
+
+    if( *pp_pic == NULL ) {
+        msg_Err( p_this, "Unable to load %s image", psz_name );
+        return VLC_EGENERIC;
+    }
+
+    msg_Dbg( p_this, "%s image has dim %d x %d (Y plane)", psz_name,
+             (*pp_pic)->p[Y_PLANE].i_visible_pitch,
+             (*pp_pic)->p[Y_PLANE].i_visible_lines );
+}
+
+/*****************************************************************************
+ * Create: allocates video thread output method
+ *****************************************************************************/
+static int Create( vlc_object_t *p_this )
+{
+    filter_t *p_filter = (filter_t *)p_this;
+    filter_sys_t *p_sys;
+    char *psz_temp;
+
+    /* Allocate structure */
+    p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
+    if( p_filter->p_sys == NULL )
+    {
+        msg_Err( p_filter, "out of memory" );
+        return VLC_ENOMEM;
+    }
+    p_sys = p_filter->p_sys;
+    p_sys->b_done = VLC_FALSE;
+
+    p_filter->pf_video_filter = Filter;
+
+    /* needed to get options passed in transcode using the
+     * adjust{name=value} syntax */
+    config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
+                       p_filter->p_cfg );
+
+    p_sys->i_loops = var_CreateGetIntegerCommand( p_filter,
+                                                  CFG_PREFIX "loops" );
+    p_sys->i_alpha = var_CreateGetIntegerCommand( p_filter,
+                                                  CFG_PREFIX "alpha" );
+
+    psz_temp = var_CreateGetStringCommand( p_filter, CFG_PREFIX "base-chroma" );
+    p_sys->i_base_chroma = VLC_FOURCC( psz_temp[0], psz_temp[1],
+                                       psz_temp[2], psz_temp[3] );
+    LoadImage( p_this, &p_sys->p_base_image, p_sys->i_base_chroma,
+               var_CreateGetStringCommand( p_filter, CFG_PREFIX "base-image" ),
+               "Base" );
+
+    psz_temp = var_CreateGetStringCommand( p_filter,
+                                           CFG_PREFIX "blend-chroma" );
+    p_sys->i_blend_chroma = VLC_FOURCC( psz_temp[0], psz_temp[1],
+                                        psz_temp[2], psz_temp[3] );
+    LoadImage( p_this, &p_sys->p_blend_image, p_sys->i_blend_chroma,
+               var_CreateGetStringCommand( p_filter, CFG_PREFIX "blend-image" ),
+               "Blend" );
+
+    return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Destroy: destroy video thread output method
+ *****************************************************************************/
+static void Destroy( vlc_object_t *p_this )
+{
+    filter_t *p_filter = (filter_t *)p_this;
+    filter_sys_t *p_sys = p_filter->p_sys;
+
+    p_sys->p_base_image->pf_release( p_sys->p_base_image );
+    p_sys->p_blend_image->pf_release( p_sys->p_blend_image );
+}
+
+/*****************************************************************************
+ * Render: displays previously rendered output
+ *****************************************************************************/
+static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
+{
+    filter_sys_t *p_sys = p_filter->p_sys;
+
+    if( p_sys->b_done )
+    {
+        return p_pic;
+    }
+
+    filter_t *p_blend;
+
+    p_blend = vlc_object_create( p_filter, VLC_OBJECT_FILTER );
+    vlc_object_attach( p_blend, p_filter );
+    p_blend->fmt_out.video = p_sys->p_base_image->format;
+    p_blend->fmt_in.video = p_sys->p_blend_image->format;
+    p_blend->p_module = module_Need( p_blend, "video blending", 0, 0 );
+
+    mtime_t time = mdate();
+    for( int i_iter = 0; i_iter < p_sys->i_loops; ++i_iter )
+    {
+        p_blend->pf_video_blend( p_blend, p_sys->p_base_image,
+                                 p_sys->p_base_image, p_sys->p_blend_image, 0,
+                                 0, p_sys->i_alpha );
+    }
+    time = mdate() - time;
+
+    msg_Info( p_filter, "Blended %d images in %f sec.", p_sys->i_loops,
+              time / 1000000.0f );
+    msg_Info( p_filter, "Speed is: %f images/second, %f pixels/second",
+              (float) p_sys->i_loops / time * 1000000,
+              (float) p_sys->i_loops / time * 1000000 *
+                  p_sys->p_blend_image->p[Y_PLANE].i_visible_pitch *
+                  p_sys->p_blend_image->p[Y_PLANE].i_visible_lines );
+
+    module_Unneed( p_blend, p_blend->p_module );
+
+    vlc_object_detach( p_blend );
+    vlc_object_destroy( p_blend );
+
+    p_sys->b_done = VLC_TRUE;
+    return p_pic;
+}