visual.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:15k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * visual.c : Visualisation system
- *****************************************************************************
- * Copyright (C) 2002-2006 the VideoLAN team
- * $Id: bf4cb034dc786f1f38e28d3ac10618fe01f749a9 $
- *
- * Authors: Clément Stenac <zorglub@via.ecp.fr>
- *
- * 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_aout.h>
- #include "visual.h"
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define ELIST_TEXT N_( "Effects list" )
- #define ELIST_LONGTEXT N_(
- "A list of visual effect, separated by commas.n"
- "Current effects include: dummy, scope, spectrum." )
- #define WIDTH_TEXT N_( "Video width" )
- #define WIDTH_LONGTEXT N_(
- "The width of the effects video window, in pixels." )
- #define HEIGHT_TEXT N_( "Video height" )
- #define HEIGHT_LONGTEXT N_(
- "The height of the effects video window, in pixels." )
- #define NBBANDS_TEXT N_( "More bands : 80 / 20" )
- #define NBBANDS_LONGTEXT N_(
- "More bands for the spectrum analyzer : 80 if enabled else 20." )
- #define SPNBBANDS_LONGTEXT N_(
- "More bands for the spectrometer : 80 if enabled else 20." )
- #define SEPAR_TEXT N_( "Band separator" )
- #define SEPAR_LONGTEXT N_(
- "Number of blank pixels between bands.")
- #define AMP_TEXT N_( "Amplification" )
- #define AMP_LONGTEXT N_(
- "This is a coefficient that modifies the height of the bands.")
- #define PEAKS_TEXT N_( "Enable peaks" )
- #define PEAKS_LONGTEXT N_(
- "Draw "peaks" in the spectrum analyzer." )
- #define ORIG_TEXT N_( "Enable original graphic spectrum" )
- #define ORIG_LONGTEXT N_(
- "Enable the "flat" spectrum analyzer in the spectrometer." )
- #define BANDS_TEXT N_( "Enable bands" )
- #define BANDS_LONGTEXT N_(
- "Draw bands in the spectrometer." )
- #define BASE_TEXT N_( "Enable base" )
- #define BASE_LONGTEXT N_(
- "Defines whether to draw the base of the bands." )
- #define RADIUS_TEXT N_( "Base pixel radius" )
- #define RADIUS_LONGTEXT N_(
- "Defines radius size in pixels, of base of bands(beginning)." )
- #define SSECT_TEXT N_( "Spectral sections" )
- #define SSECT_LONGTEXT N_(
- "Determines how many sections of spectrum will exist." )
- #define PEAK_HEIGHT_TEXT N_( "Peak height" )
- #define PEAK_HEIGHT_LONGTEXT N_(
- "Total pixel height of the peak items." )
- #define PEAK_WIDTH_TEXT N_( "Peak extra width" )
- #define PEAK_WIDTH_LONGTEXT N_(
- "Additions or subtractions of pixels on the peak width." )
- #define COLOR1_TEXT N_( "V-plane color" )
- #define COLOR1_LONGTEXT N_(
- "YUV-Color cube shifting across the V-plane ( 0 - 127 )." )
- #define STARS_TEXT N_( "Number of stars" )
- #define STARS_LONGTEXT N_(
- "Number of stars to draw with random effect." )
- static int Open ( vlc_object_t * );
- static void Close ( vlc_object_t * );
- vlc_module_begin ()
- set_shortname( N_("Visualizer"))
- set_category( CAT_AUDIO )
- set_subcategory( SUBCAT_AUDIO_VISUAL )
- set_description( N_("Visualizer filter") )
- set_section( N_( "General") , NULL )
- add_string("effect-list", "spectrum", NULL,
- ELIST_TEXT, ELIST_LONGTEXT, true )
- add_integer("effect-width",VOUT_WIDTH,NULL,
- WIDTH_TEXT, WIDTH_LONGTEXT, false )
- add_integer("effect-height" , VOUT_HEIGHT , NULL,
- HEIGHT_TEXT, HEIGHT_LONGTEXT, false )
- set_section( N_("Spectrum analyser") , NULL )
- add_obsolete_integer( "visual-nbbands" ) /* Since 1.0.0 */
- add_bool("visual-80-bands", 1, NULL,
- NBBANDS_TEXT, NBBANDS_LONGTEXT, true );
- add_obsolete_integer( "visual-separ" ) /* Since 1.0.0 */
- add_obsolete_integer( "visual-amp" ) /* Since 1.0.0 */
- add_bool("visual-peaks", true, NULL,
- PEAKS_TEXT, PEAKS_LONGTEXT, true )
- set_section( N_("Spectrometer") , NULL )
- add_bool("spect-show-original", false, NULL,
- ORIG_TEXT, ORIG_LONGTEXT, true )
- add_bool("spect-show-base", true, NULL,
- BASE_TEXT, BASE_LONGTEXT, true )
- add_integer("spect-radius", 42, NULL,
- RADIUS_TEXT, RADIUS_LONGTEXT, true )
- add_integer("spect-sections", 3, NULL,
- SSECT_TEXT, SSECT_LONGTEXT, true )
- add_integer("spect-color", 80, NULL,
- COLOR1_TEXT, COLOR1_LONGTEXT, true )
- add_bool("spect-show-bands", true, NULL,
- BANDS_TEXT, BANDS_LONGTEXT, true );
- add_obsolete_integer( "spect-nbbands" ) /* Since 1.0.0 */
- add_bool("spect-80-bands", 1, NULL,
- NBBANDS_TEXT, SPNBBANDS_LONGTEXT, true )
- add_integer("spect-separ", 1, NULL,
- SEPAR_TEXT, SEPAR_LONGTEXT, true )
- add_integer("spect-amp", 8, NULL,
- AMP_TEXT, AMP_LONGTEXT, true )
- add_bool("spect-show-peaks", true, NULL,
- PEAKS_TEXT, PEAKS_LONGTEXT, true )
- add_integer("spect-peak-width", 61, NULL,
- PEAK_WIDTH_TEXT, PEAK_WIDTH_LONGTEXT, true )
- add_integer("spect-peak-height", 1, NULL,
- PEAK_HEIGHT_TEXT, PEAK_HEIGHT_LONGTEXT, true )
- set_capability( "visualization", 0 )
- set_callbacks( Open, Close )
- add_shortcut( "visualizer")
- vlc_module_end ()
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- static void DoWork( aout_instance_t *, aout_filter_t *,
- aout_buffer_t *, aout_buffer_t * );
- static int FilterCallback( vlc_object_t *, char const *,
- vlc_value_t, vlc_value_t, void * );
- static const struct
- {
- const char *psz_name;
- int (*pf_run)( visual_effect_t *, aout_instance_t *,
- aout_buffer_t *, picture_t *);
- } pf_effect_run[]=
- {
- { "scope", scope_Run },
- { "vuMeter", vuMeter_Run },
- { "spectrum", spectrum_Run },
- { "spectrometer", spectrometer_Run },
- { "dummy", dummy_Run},
- { NULL, dummy_Run}
- };
- /*****************************************************************************
- * Open: open the visualizer
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- aout_filter_t *p_filter = (aout_filter_t *)p_this;
- aout_filter_sys_t *p_sys;
- char *psz_effects, *psz_parser;
- video_format_t fmt;
- if( ( p_filter->input.i_format != VLC_FOURCC('f','l','3','2') &&
- p_filter->input.i_format != VLC_FOURCC('f','i','3','2') ) )
- {
- return VLC_EGENERIC;
- }
- p_sys = p_filter->p_sys = malloc( sizeof( aout_filter_sys_t ) );
- if( p_sys == NULL )
- return VLC_EGENERIC;
- p_sys->i_height = config_GetInt( p_filter , "effect-height");
- p_sys->i_width = config_GetInt( p_filter , "effect-width");
- if( p_sys->i_height < 400 ) p_sys->i_height = 400;
- if( p_sys->i_width < 532 ) p_sys->i_width = 532;
- if( (p_sys->i_height % 2 ) != 0 ) p_sys->i_height--;
- if( (p_sys->i_width % 2 ) != 0 ) p_sys->i_width--;
- p_sys->i_effect = 0;
- p_sys->effect = NULL;
- /* Parse the effect list */
- psz_parser = psz_effects = var_CreateGetString( p_filter, "effect-list" );
- var_AddCallback( p_filter, "effect-list", FilterCallback, NULL );
- while( psz_parser && *psz_parser != ' ' )
- {
- visual_effect_t *p_effect;
- int i;
- p_effect = malloc( sizeof( visual_effect_t ) );
- if( !p_effect )
- break;
- p_effect->i_width = p_sys->i_width;
- p_effect->i_height= p_sys->i_height;
- p_effect->i_nb_chans = aout_FormatNbChannels( &p_filter->input);
- p_effect->i_idx_left = 0;
- p_effect->i_idx_right = __MIN( 1, p_effect->i_nb_chans-1 );
- p_effect->psz_args = NULL;
- p_effect->p_data = NULL;
- p_effect->pf_run = NULL;
- p_effect->psz_name = NULL;
- for( i = 0; pf_effect_run[i].psz_name != NULL; i++ )
- {
- if( !strncasecmp( psz_parser,
- pf_effect_run[i].psz_name,
- strlen( pf_effect_run[i].psz_name ) ) )
- {
- p_effect->pf_run = pf_effect_run[i].pf_run;
- p_effect->psz_name = strdup( pf_effect_run[i].psz_name );
- break;
- }
- }
- if( p_effect->psz_name )
- {
- psz_parser += strlen( p_effect->psz_name );
- if( *psz_parser == '{' )
- {
- char *psz_eoa;
- psz_parser++;
- if( ( psz_eoa = strchr( psz_parser, '}') ) == NULL )
- {
- msg_Err( p_filter, "unable to parse effect list. Aborting");
- free( p_effect->psz_name );
- free( p_effect );
- break;
- }
- p_effect->psz_args =
- strndup( psz_parser, psz_eoa - psz_parser);
- }
- TAB_APPEND( p_sys->i_effect, p_sys->effect, p_effect );
- }
- else
- {
- msg_Err( p_filter, "unknown visual effect: %s", psz_parser );
- free( p_effect );
- }
- if( strchr( psz_parser, ',' ) )
- {
- psz_parser = strchr( psz_parser, ',' ) + 1;
- }
- else if( strchr( psz_parser, ':' ) )
- {
- psz_parser = strchr( psz_parser, ':' ) + 1;
- }
- else
- {
- break;
- }
- }
- free( psz_effects );
- if( !p_sys->i_effect )
- {
- msg_Err( p_filter, "no effects found" );
- free( p_sys );
- return VLC_EGENERIC;
- }
- /* Open the video output */
- memset( &fmt, 0, sizeof(video_format_t) );
- fmt.i_width = fmt.i_visible_width = p_sys->i_width;
- fmt.i_height = fmt.i_visible_height = p_sys->i_height;
- fmt.i_chroma = VLC_FOURCC('I','4','2','0');
- fmt.i_aspect = VOUT_ASPECT_FACTOR * p_sys->i_width/p_sys->i_height;
- fmt.i_sar_num = fmt.i_sar_den = 1;
- p_sys->p_vout = aout_filter_RequestVout( p_filter, NULL, &fmt );
- if( p_sys->p_vout == NULL )
- {
- msg_Err( p_filter, "no suitable vout module" );
- for( int i = 0; i < p_sys->i_effect; i++ )
- {
- free( p_sys->effect[i]->psz_name );
- free( p_sys->effect[i]->psz_args );
- free( p_sys->effect[i] );
- }
- free( p_sys->effect );
- free( p_sys );
- return VLC_EGENERIC;
- }
- p_filter->pf_do_work = DoWork;
- p_filter->b_in_place= 1;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * DoWork: convert a buffer
- *****************************************************************************
- * Audio part pasted from trivial.c
- ****************************************************************************/
- static void DoWork( aout_instance_t *p_aout, aout_filter_t *p_filter,
- aout_buffer_t *p_in_buf, aout_buffer_t *p_out_buf )
- {
- aout_filter_sys_t *p_sys = p_filter->p_sys;
- picture_t *p_outpic;
- int i;
- p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
- p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes *
- aout_FormatNbChannels( &p_filter->output ) /
- aout_FormatNbChannels( &p_filter->input );
- /* First, get a new picture */
- while( ( p_outpic = vout_CreatePicture( p_sys->p_vout, 0, 0, 3 ) ) == NULL)
- {
- if( !vlc_object_alive (p_aout) )
- {
- return;
- }
- msleep( VOUT_OUTMEM_SLEEP );
- }
- /* Blank the picture */
- for( i = 0 ; i < p_outpic->i_planes ; i++ )
- {
- memset( p_outpic->p[i].p_pixels, i > 0 ? 0x80 : 0x00,
- p_outpic->p[i].i_visible_lines * p_outpic->p[i].i_pitch );
- }
- /* We can now call our visualization effects */
- for( i = 0; i < p_sys->i_effect; i++ )
- {
- #define p_effect p_sys->effect[i]
- if( p_effect->pf_run )
- {
- p_effect->pf_run( p_effect, p_aout, p_out_buf, p_outpic );
- }
- #undef p_effect
- }
- p_outpic->date = ( p_in_buf->start_date + p_in_buf->end_date ) / 2;
- vout_DisplayPicture( p_sys->p_vout, p_outpic );
- }
- /*****************************************************************************
- * Close: close the plugin
- *****************************************************************************/
- static void Close( vlc_object_t *p_this )
- {
- aout_filter_t * p_filter = (aout_filter_t *)p_this;
- aout_filter_sys_t *p_sys = p_filter->p_sys;
- int i;
- if( p_filter->p_sys->p_vout )
- {
- aout_filter_RequestVout( p_filter, p_filter->p_sys->p_vout, 0 );
- }
- /* Free the list */
- for( i = 0; i < p_sys->i_effect; i++ )
- {
- #define p_effect p_sys->effect[i]
- if( !strncmp( p_effect->psz_name, "spectrum", strlen( "spectrum" ) ) )
- {
- free( ( ( spectrum_data * )p_effect->p_data )->peaks );
- free( ( ( spectrum_data * )p_effect->p_data )->prev_heights );
- }
- free( p_effect->p_data );
- free( p_effect->psz_name );
- free( p_effect->psz_args );
- free( p_effect );
- #undef p_effect
- }
- free( p_sys->effect );
- free( p_filter->p_sys );
- }
- /*****************************************************************************
- * FilterCallback: called when changing the deinterlace method on the fly.
- *****************************************************************************/
- static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval,
- void *p_data )
- {
- VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
- VLC_UNUSED(p_data); VLC_UNUSED(newval);
- aout_filter_t *p_filter = (aout_filter_t *)p_this;
- /* restart this baby */
- msg_Dbg( p_filter, "we should restart the visual filter" );
- return VLC_SUCCESS;
- }