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419 lines
13 KiB
419 lines
13 KiB
/*****************************************************************************
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* visual.c : Visualisation system
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*****************************************************************************
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* Copyright (C) 2002-2009 VLC authors and VideoLAN
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* $Id$
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*
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* Authors: Clément Stenac <zorglub@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <assert.h>
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#include <limits.h>
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_vout.h>
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#include <vlc_aout.h>
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#include <vlc_filter.h>
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#include "visual.h"
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#include "window_presets.h"
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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#define ELIST_TEXT N_( "Effects list" )
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#define ELIST_LONGTEXT N_( \
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"A list of visual effect, separated by commas.\n" \
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"Current effects include: dummy, scope, spectrum, "\
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"spectrometer and vuMeter." )
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#define WIDTH_TEXT N_( "Video width" )
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#define WIDTH_LONGTEXT N_( \
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"The width of the effects video window, in pixels." )
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#define HEIGHT_TEXT N_( "Video height" )
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#define HEIGHT_LONGTEXT N_( \
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"The height of the effects video window, in pixels." )
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#define FFT_WINDOW_TEXT N_( "FFT window" )
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#define FFT_WINDOW_LONGTEXT N_( \
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"The type of FFT window to use for spectrum-based visualizations." )
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#define KAISER_PARAMETER_TEXT N_( "Kaiser window parameter" )
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#define KAISER_PARAMETER_LONGTEXT N_( \
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"The parameter alpha for the Kaiser window. Increasing alpha " \
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"increases the main-lobe width and decreases the side-lobe amplitude." )
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#define NBBANDS_TEXT N_( "Show 80 bands instead of 20" )
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#define SPNBBANDS_LONGTEXT N_( \
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"More bands for the spectrometer : 80 if enabled else 20." )
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#define SEPAR_TEXT N_( "Number of blank pixels between bands.")
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#define AMP_TEXT N_( "Amplification" )
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#define AMP_LONGTEXT N_( \
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"This is a coefficient that modifies the height of the bands.")
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#define PEAKS_TEXT N_( "Draw peaks in the analyzer" )
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#define ORIG_TEXT N_( "Enable original graphic spectrum" )
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#define ORIG_LONGTEXT N_( \
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"Enable the \"flat\" spectrum analyzer in the spectrometer." )
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#define BANDS_TEXT N_( "Draw bands in the spectrometer" )
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#define BASE_TEXT N_( "Draw the base of the bands" )
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#define RADIUS_TEXT N_( "Base pixel radius" )
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#define RADIUS_LONGTEXT N_( \
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"Defines radius size in pixels, of base of bands(beginning)." )
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#define SSECT_TEXT N_( "Spectral sections" )
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#define SSECT_LONGTEXT N_( \
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"Determines how many sections of spectrum will exist." )
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#define PEAK_HEIGHT_TEXT N_( "Peak height" )
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#define PEAK_HEIGHT_LONGTEXT N_( \
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"Total pixel height of the peak items." )
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#define PEAK_WIDTH_TEXT N_( "Peak extra width" )
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#define PEAK_WIDTH_LONGTEXT N_( \
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"Additions or subtractions of pixels on the peak width." )
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#define COLOR1_TEXT N_( "V-plane color" )
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#define COLOR1_LONGTEXT N_( \
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"YUV-Color cube shifting across the V-plane ( 0 - 127 )." )
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/* Default vout size */
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#define VOUT_WIDTH 800
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#define VOUT_HEIGHT 500
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static int Open ( vlc_object_t * );
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static void Close ( vlc_object_t * );
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vlc_module_begin ()
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set_shortname( N_("Visualizer"))
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set_category( CAT_AUDIO )
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set_subcategory( SUBCAT_AUDIO_VISUAL )
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set_description( N_("Visualizer filter") )
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set_section( N_( "General") , NULL )
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add_string("effect-list", "spectrum",
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ELIST_TEXT, ELIST_LONGTEXT, true )
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add_integer("effect-width",VOUT_WIDTH,
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WIDTH_TEXT, WIDTH_LONGTEXT, false )
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add_integer("effect-height" , VOUT_HEIGHT ,
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HEIGHT_TEXT, HEIGHT_LONGTEXT, false )
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add_string("effect-fft-window", "flat",
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FFT_WINDOW_TEXT, FFT_WINDOW_LONGTEXT, true )
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change_string_list( window_list, window_list_text )
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add_float("effect-kaiser-param", 3.0f,
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KAISER_PARAMETER_TEXT, KAISER_PARAMETER_LONGTEXT, true )
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set_section( N_("Spectrum analyser") , NULL )
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add_obsolete_integer( "visual-nbbands" ) /* Since 1.0.0 */
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add_bool("visual-80-bands", true,
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NBBANDS_TEXT, NBBANDS_TEXT, true );
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add_obsolete_integer( "visual-separ" ) /* Since 1.0.0 */
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add_obsolete_integer( "visual-amp" ) /* Since 1.0.0 */
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add_bool("visual-peaks", true,
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PEAKS_TEXT, PEAKS_TEXT, true )
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set_section( N_("Spectrometer") , NULL )
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add_bool("spect-show-original", false,
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ORIG_TEXT, ORIG_LONGTEXT, true )
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add_bool("spect-show-base", true,
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BASE_TEXT, BASE_TEXT, true )
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add_integer("spect-radius", 42,
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RADIUS_TEXT, RADIUS_LONGTEXT, true )
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add_integer_with_range("spect-sections", 3, 1, INT_MAX,
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SSECT_TEXT, SSECT_LONGTEXT, true )
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add_integer("spect-color", 80,
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COLOR1_TEXT, COLOR1_LONGTEXT, true )
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add_bool("spect-show-bands", true,
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BANDS_TEXT, BANDS_TEXT, true );
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add_obsolete_integer( "spect-nbbands" ) /* Since 1.0.0 */
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add_bool("spect-80-bands", true,
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NBBANDS_TEXT, NBBANDS_TEXT, true )
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add_integer("spect-separ", 1,
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SEPAR_TEXT, SEPAR_TEXT, true )
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add_integer("spect-amp", 8,
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AMP_TEXT, AMP_LONGTEXT, true )
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add_bool("spect-show-peaks", true,
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PEAKS_TEXT, PEAKS_TEXT, true )
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add_integer("spect-peak-width", 61,
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PEAK_WIDTH_TEXT, PEAK_WIDTH_LONGTEXT, true )
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add_integer("spect-peak-height", 1,
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PEAK_HEIGHT_TEXT, PEAK_HEIGHT_LONGTEXT, true )
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set_capability( "visualization", 0 )
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set_callbacks( Open, Close )
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add_shortcut( "visualizer")
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vlc_module_end ()
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static block_t *DoWork( filter_t *, block_t * );
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static void *Thread( void *);
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struct filter_sys_t
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{
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block_fifo_t *fifo;
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vout_thread_t *p_vout;
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visual_effect_t **effect;
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int i_effect;
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vlc_thread_t thread;
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};
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/*****************************************************************************
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* Open: open the visualizer
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*****************************************************************************/
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static int Open( vlc_object_t *p_this )
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{
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filter_t *p_filter = (filter_t *)p_this;
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filter_sys_t *p_sys;
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char *psz_effects, *psz_parser;
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p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
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if( unlikely (p_sys == NULL ) )
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return VLC_EGENERIC;
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int width = var_InheritInteger( p_filter , "effect-width");
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int height = var_InheritInteger( p_filter , "effect-width");
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/* No resolution under 400x532 and no odd dimension */
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if( width < 532 )
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width = 532;
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width &= ~1;
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if( height < 400 )
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height = 400;
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height &= ~1;
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p_sys->i_effect = 0;
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p_sys->effect = NULL;
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/* Parse the effect list */
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psz_parser = psz_effects = var_CreateGetString( p_filter, "effect-list" );
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while( psz_parser && *psz_parser != '\0' )
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{
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visual_effect_t *p_effect;
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p_effect = malloc( sizeof( visual_effect_t ) );
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if( !p_effect )
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break;
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p_effect->i_width = width;
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p_effect->i_height = height;
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p_effect->i_nb_chans = aout_FormatNbChannels( &p_filter->fmt_in.audio);
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p_effect->i_idx_left = 0;
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p_effect->i_idx_right = __MIN( 1, p_effect->i_nb_chans-1 );
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p_effect->p_data = NULL;
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p_effect->pf_run = NULL;
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for( unsigned i = 0; i < effectc; i++ )
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{
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if( !strncasecmp( psz_parser, effectv[i].name,
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strlen( effectv[i].name ) ) )
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{
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p_effect->pf_run = effectv[i].run_cb;
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p_effect->pf_free = effectv[i].free_cb;
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psz_parser += strlen( effectv[i].name );
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break;
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}
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}
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if( p_effect->pf_run != NULL )
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{
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if( *psz_parser == '{' )
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{
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char *psz_eoa;
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psz_parser++;
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if( ( psz_eoa = strchr( psz_parser, '}') ) == NULL )
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{
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msg_Err( p_filter, "unable to parse effect list. Aborting");
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free( p_effect );
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break;
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}
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}
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TAB_APPEND( p_sys->i_effect, p_sys->effect, p_effect );
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}
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else
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{
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msg_Err( p_filter, "unknown visual effect: %s", psz_parser );
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free( p_effect );
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}
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if( strchr( psz_parser, ',' ) )
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{
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psz_parser = strchr( psz_parser, ',' ) + 1;
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}
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else if( strchr( psz_parser, ':' ) )
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{
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psz_parser = strchr( psz_parser, ':' ) + 1;
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}
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else
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{
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break;
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}
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}
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free( psz_effects );
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if( !p_sys->i_effect )
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{
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msg_Err( p_filter, "no effects found" );
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goto error;
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}
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/* Open the video output */
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video_format_t fmt = {
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.i_chroma = VLC_CODEC_I420,
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.i_width = width,
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.i_height = height,
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.i_visible_width = width,
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.i_visible_height = height,
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.i_sar_num = 1,
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.i_sar_den = 1,
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};
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p_sys->p_vout = aout_filter_RequestVout( p_filter, NULL, &fmt );
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if( p_sys->p_vout == NULL )
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{
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msg_Err( p_filter, "no suitable vout module" );
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goto error;
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}
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p_sys->fifo = block_FifoNew();
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if( unlikely( p_sys->fifo == NULL ) )
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{
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aout_filter_RequestVout( p_filter, p_sys->p_vout, NULL );
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goto error;
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}
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if( vlc_clone( &p_sys->thread, Thread, p_filter,
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VLC_THREAD_PRIORITY_VIDEO ) )
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{
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block_FifoRelease( p_sys->fifo );
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aout_filter_RequestVout( p_filter, p_sys->p_vout, NULL );
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goto error;
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}
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p_filter->fmt_in.audio.i_format = VLC_CODEC_FL32;
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p_filter->fmt_out.audio = p_filter->fmt_in.audio;
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p_filter->pf_audio_filter = DoWork;
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return VLC_SUCCESS;
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error:
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for( int i = 0; i < p_sys->i_effect; i++ )
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free( p_sys->effect[i] );
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free( p_sys->effect );
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free( p_sys );
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return VLC_EGENERIC;
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}
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static block_t *DoRealWork( filter_t *p_filter, block_t *p_in_buf )
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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/* First, get a new picture */
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picture_t *p_outpic = vout_GetPicture( p_sys->p_vout );
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if( unlikely(p_outpic == NULL) )
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return p_in_buf;
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/* Blank the picture */
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for( int i = 0 ; i < p_outpic->i_planes ; i++ )
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{
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memset( p_outpic->p[i].p_pixels, i > 0 ? 0x80 : 0x00,
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p_outpic->p[i].i_visible_lines * p_outpic->p[i].i_pitch );
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}
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/* We can now call our visualization effects */
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for( int i = 0; i < p_sys->i_effect; i++ )
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{
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#define p_effect p_sys->effect[i]
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if( p_effect->pf_run )
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{
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p_effect->pf_run( p_effect, VLC_OBJECT(p_filter),
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p_in_buf, p_outpic );
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}
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#undef p_effect
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}
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p_outpic->date = p_in_buf->i_pts + (p_in_buf->i_length / 2);
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vout_PutPicture( p_sys->p_vout, p_outpic );
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return p_in_buf;
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}
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static void *Thread( void *data )
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{
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filter_t *p_filter = data;
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filter_sys_t *sys = p_filter->p_sys;
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for (;;)
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{
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block_t *block = block_FifoGet( sys->fifo );
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int canc = vlc_savecancel( );
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block_Release( DoRealWork( p_filter, block ) );
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vlc_restorecancel( canc );
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}
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vlc_assert_unreachable();
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}
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static block_t *DoWork( filter_t *p_filter, block_t *p_in_buf )
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{
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block_t *block = block_Duplicate( p_in_buf );
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if( likely(block != NULL) )
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block_FifoPut( p_filter->p_sys->fifo, block );
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return p_in_buf;
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}
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/*****************************************************************************
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* Close: close the plugin
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*****************************************************************************/
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static void Close( vlc_object_t *p_this )
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{
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filter_t * p_filter = (filter_t *)p_this;
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filter_sys_t *p_sys = p_filter->p_sys;
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vlc_cancel( p_sys->thread );
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vlc_join( p_sys->thread, NULL );
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block_FifoRelease( p_sys->fifo );
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aout_filter_RequestVout( p_filter, p_filter->p_sys->p_vout, NULL );
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/* Free the list */
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for( int i = 0; i < p_sys->i_effect; i++ )
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{
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#define p_effect (p_sys->effect[i])
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p_effect->pf_free( p_effect->p_data );
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free( p_effect );
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#undef p_effect
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}
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free( p_sys->effect );
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free( p_sys );
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}
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