blendbench.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:9k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * blendbench.c : blending benchmark plugin for vlc
- *****************************************************************************
- * Copyright (C) 2007 the VideoLAN team
- * $Id: d60bb20616d2e5fd06c2d9a00a5eeef20efd46f8 $
- *
- * 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
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.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( N_("Blending benchmark filter") )
- set_shortname( N_("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, false )
- add_integer_with_range( CFG_PREFIX "alpha", 128, 0, 255, NULL, ALPHA_TEXT,
- ALPHA_LONGTEXT, false )
- set_section( N_("Base image"), NULL )
- add_file( CFG_PREFIX "base-image", NULL, NULL, BASE_IMAGE_TEXT,
- BASE_IMAGE_LONGTEXT, false )
- add_string( CFG_PREFIX "base-chroma", "I420", NULL, BASE_CHROMA_TEXT,
- BASE_CHROMA_LONGTEXT, false )
- set_section( N_("Blend image"), NULL )
- add_file( CFG_PREFIX "blend-image", NULL, NULL, BLEND_IMAGE_TEXT,
- BLEND_IMAGE_LONGTEXT, false )
- add_string( CFG_PREFIX "blend-chroma", "YUVA", NULL, BLEND_CHROMA_TEXT,
- BLEND_CHROMA_LONGTEXT, false )
- set_callbacks( Create, Destroy )
- vlc_module_end ()
- static const char *const ppsz_filter_options[] = {
- "loops", "alpha", "base-image", "base-chroma", "blend-image",
- "blend-chroma", NULL
- };
- /*****************************************************************************
- * filter_sys_t: filter method descriptor
- *****************************************************************************/
- struct filter_sys_t
- {
- bool 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 blendbench_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 );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * 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, *psz_cmd;
- /* Allocate structure */
- p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
- if( p_filter->p_sys == NULL )
- return VLC_ENOMEM;
- p_sys = p_filter->p_sys;
- p_sys->b_done = 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] );
- psz_cmd = var_CreateGetStringCommand( p_filter, CFG_PREFIX "base-image" );
- blendbench_LoadImage( p_this, &p_sys->p_base_image, p_sys->i_base_chroma,
- psz_cmd, "Base" );
- free( psz_temp );
- free( psz_cmd );
- 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] );
- psz_cmd = var_CreateGetStringCommand( p_filter, CFG_PREFIX "blend-image" );
- blendbench_LoadImage( p_this, &p_sys->p_blend_image, p_sys->i_blend_chroma,
- psz_cmd, "Blend" );
- free( psz_temp );
- free( psz_cmd );
- 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;
- picture_Release( p_sys->p_base_image );
- picture_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;
- filter_t *p_blend;
- if( p_sys->b_done )
- return p_pic;
- p_blend = vlc_object_create( p_filter, sizeof(filter_t) );
- if( !p_blend )
- {
- picture_Release( p_pic );
- return NULL;
- }
- 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", NULL, false );
- if( !p_blend->p_module )
- {
- picture_Release( p_pic );
- vlc_object_detach( p_blend );
- vlc_object_release( p_blend );
- return NULL;
- }
- 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_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_release( p_blend );
- p_sys->b_done = true;
- return p_pic;
- }