invert.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:6k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * invert.c : Invert video plugin for vlc
- *****************************************************************************
- * Copyright (C) 2000-2006 the VideoLAN team
- * $Id: 1f1cd71aaed3c61335d2edae82fd85c7605ab436 $
- *
- * Authors: Samuel Hocevar <sam@zoy.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_vout.h>
- #include "vlc_filter.h"
- #include "filter_picture.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
- *****************************************************************************/
- vlc_module_begin ()
- set_description( N_("Invert video filter") )
- set_shortname( N_("Color inversion" ))
- set_category( CAT_VIDEO )
- set_subcategory( SUBCAT_VIDEO_VFILTER )
- set_capability( "video filter2", 0 )
- add_shortcut( "invert" )
- set_callbacks( Create, Destroy )
- vlc_module_end ()
- /*****************************************************************************
- * vout_sys_t: Invert video output method descriptor
- *****************************************************************************
- * This structure is part of the video output thread descriptor.
- * It describes the Invert specific properties of an output thread.
- *****************************************************************************/
- struct filter_sys_t
- {
- };
- /*****************************************************************************
- * Create: allocates Invert video thread output method
- *****************************************************************************
- * This function allocates and initializes a Invert vout method.
- *****************************************************************************/
- static int Create( vlc_object_t *p_this )
- {
- filter_t *p_filter = (filter_t *)p_this;
- /* Allocate structure */
- p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
- if( p_filter->p_sys == NULL )
- return VLC_ENOMEM;
- p_filter->pf_video_filter = Filter;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Destroy: destroy Invert video thread output method
- *****************************************************************************
- * Terminate an output method created by InvertCreateOutputMethod
- *****************************************************************************/
- static void Destroy( vlc_object_t *p_this )
- {
- filter_t *p_filter = (filter_t *)p_this;
- free( p_filter->p_sys );
- }
- /*****************************************************************************
- * Render: displays previously rendered output
- *****************************************************************************
- * This function send the currently rendered image to Invert image, waits
- * until it is displayed and switch the two rendering buffers, preparing next
- * frame.
- *****************************************************************************/
- static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
- {
- picture_t *p_outpic;
- int i_index;
- int i_planes;
- if( !p_pic ) return NULL;
- p_outpic = filter_NewPicture( p_filter );
- if( !p_outpic )
- {
- msg_Warn( p_filter, "can't get output picture" );
- picture_Release( p_pic );
- return NULL;
- }
- if( p_pic->format.i_chroma == VLC_FOURCC('Y','U','V','A') )
- {
- /* We don't want to invert the alpha plane */
- i_planes = p_pic->i_planes - 1;
- vlc_memcpy(
- p_outpic->p[A_PLANE].p_pixels, p_pic->p[A_PLANE].p_pixels,
- p_pic->p[A_PLANE].i_pitch * p_pic->p[A_PLANE].i_lines );
- }
- else
- {
- i_planes = p_pic->i_planes;
- }
- for( i_index = 0 ; i_index < i_planes ; i_index++ )
- {
- uint8_t *p_in, *p_in_end, *p_line_end, *p_out;
- p_in = p_pic->p[i_index].p_pixels;
- p_in_end = p_in + p_pic->p[i_index].i_visible_lines
- * p_pic->p[i_index].i_pitch;
- p_out = p_outpic->p[i_index].p_pixels;
- for( ; p_in < p_in_end ; )
- {
- uint64_t *p_in64, *p_out64;
- p_line_end = p_in + p_pic->p[i_index].i_visible_pitch - 64;
- p_in64 = (uint64_t*)p_in;
- p_out64 = (uint64_t*)p_out;
- while( p_in64 < (uint64_t *)p_line_end )
- {
- /* Do 64 pixels at a time */
- *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
- *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
- *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
- *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
- }
- p_in = (uint8_t*)p_in64;
- p_out = (uint8_t*)p_out64;
- p_line_end += 64;
- for( ; p_in < p_line_end ; )
- {
- *p_out++ = ~( *p_in++ );
- }
- p_in += p_pic->p[i_index].i_pitch
- - p_pic->p[i_index].i_visible_pitch;
- p_out += p_outpic->p[i_index].i_pitch
- - p_outpic->p[i_index].i_visible_pitch;
- }
- }
- return CopyInfoAndRelease( p_outpic, p_pic );
- }