/***************************************************************************** * visual.c : Visualisation system ***************************************************************************** * Copyright (C) 2002-2006 the VideoLAN team * $Id$ * * Authors: Clément Stenac * * 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 #include #include #include #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_( "Number of bands" ) #define NBBANDS_LONGTEXT N_( \ "Number of bands used by spectrum analyzer, should be 20 or 80." ) #define SPNBBANDS_LONGTEXT N_( \ "Number of bands used by the spectrometer, from 20 to 80." ) #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_integer("visual-nbbands", 80, NULL, NBBANDS_TEXT, NBBANDS_LONGTEXT, true ); add_integer("visual-separ", 1, NULL, SEPAR_TEXT, SEPAR_LONGTEXT, true ); add_integer("visual-amp", 3, NULL, AMP_TEXT, AMP_LONGTEXT, true ); 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_integer("spect-nbbands", 32, 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; vlc_value_t val; 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 < 20 ) p_sys->i_height = 20; if( p_sys->i_width < 20 ) p_sys->i_width = 20; 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 */ var_Create( p_filter, "effect-list", VLC_VAR_STRING | VLC_VAR_DOINHERIT ); var_Get( p_filter, "effect-list", &val); psz_parser = psz_effects = strdup( val.psz_string ); free( val.psz_string ); var_AddCallback( p_filter, "effect-list", FilterCallback, NULL ); while( psz_parser && *psz_parser != '\0' ) { 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->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"); 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 = vout_Request( p_filter, NULL, &fmt ); if( p_sys->p_vout == NULL ) { msg_Err( p_filter, "no suitable vout module" ); 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 } vout_DatePicture( p_sys->p_vout, p_outpic, ( 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 ) { vout_Request( 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] 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; }
