plugin.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:10k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * plugin.c:
- *****************************************************************************
- * Copyright (C) 2004 the VideoLAN team
- * $Id: 285ae50995c6af3acc9da9ebe776e751d0b90d05 $
- *
- * Authors: Cyril Deguet <asmax@videolan.org>
- * Implementation of the winamp plugin MilkDrop
- * based on projectM http://xmms-projectm.sourceforge.net
- * and SciVi http://xmms-scivi.sourceforge.net
- *
- * 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
- *****************************************************************************/
- #include "plugin.h"
- #include "main.h"
- #include "PCM.h"
- #include "video_init.h"
- #include <GL/glu.h>
- #include <vlc_input.h>
- #include <vlc_playlist.h>
- #include <vlc_plugin.h>
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- static int Open ( vlc_object_t * );
- static void Close ( vlc_object_t * );
- vlc_module_begin ()
- set_description( N_("GaLaktos visualization") )
- set_capability( "visualization", 0 )
- set_callbacks( Open, Close )
- add_shortcut( "galaktos" )
- vlc_module_end ()
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- struct aout_filter_sys_t
- {
- galaktos_thread_t *p_thread;
- };
- static void DoWork ( aout_instance_t *, aout_filter_t *, aout_buffer_t *,
- aout_buffer_t * );
- static void* Thread ( vlc_object_t * );
- static char *TitleGet( vlc_object_t * );
- extern GLuint RenderTargetTextureID;
- /*****************************************************************************
- * Open: open a scope effect plugin
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- aout_filter_t *p_filter = (aout_filter_t *)p_this;
- aout_filter_sys_t *p_sys;
- galaktos_thread_t *p_thread;
- if ( p_filter->input.i_format != VLC_FOURCC('f','l','3','2' )
- || p_filter->output.i_format != VLC_FOURCC('f','l','3','2') )
- {
- msg_Warn( p_filter, "bad input or output format" );
- return VLC_EGENERIC;
- }
- if ( !AOUT_FMTS_SIMILAR( &p_filter->input, &p_filter->output ) )
- {
- msg_Warn( p_filter, "input and output formats are not similar" );
- return VLC_EGENERIC;
- }
- p_filter->pf_do_work = DoWork;
- p_filter->b_in_place = 1;
- /* Allocate structure */
- p_sys = p_filter->p_sys = malloc( sizeof( aout_filter_sys_t ) );
- /* Create galaktos thread */
- p_sys->p_thread = p_thread =
- vlc_object_create( p_filter, sizeof( galaktos_thread_t ) );
- vlc_object_attach( p_thread, p_this );
- /*
- var_Create( p_thread, "galaktos-width", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
- var_Get( p_thread, "galaktos-width", &width );
- var_Create( p_thread, "galaktos-height", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
- var_Get( p_thread, "galaktos-height", &height );
- */
- p_thread->i_cur_sample = 0;
- bzero( p_thread->p_data, 2*2*512 );
- p_thread->i_width = 600;
- p_thread->i_height = 600;
- p_thread->b_fullscreen = 0;
- galaktos_init( p_thread );
- p_thread->i_channels = aout_FormatNbChannels( &p_filter->input );
- p_thread->psz_title = TitleGet( VLC_OBJECT( p_filter ) );
- if( vlc_thread_create( p_thread, "galaktos update thread", Thread,
- VLC_THREAD_PRIORITY_LOW ) )
- {
- msg_Err( p_filter, "cannot lauch galaktos thread" );
- free( p_thread->psz_title );
- vlc_object_detach( p_thread );
- vlc_object_release( p_thread );
- free( p_sys );
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * float to s16 conversion
- *****************************************************************************/
- static inline int16_t FloatToInt16( float f )
- {
- if( f >= 1.0 )
- return 32767;
- else if( f < -1.0 )
- return -32768;
- else
- return (int16_t)( f * 32768.0 );
- }
- /*****************************************************************************
- * DoWork: process samples buffer
- *****************************************************************************
- * This function queues the audio buffer to be processed by the galaktos thread
- *****************************************************************************/
- 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 )
- {
- int i_samples;
- int i_channels;
- float *p_float;
- galaktos_thread_t *p_thread = p_filter->p_sys->p_thread;
- p_float = (float *)p_in_buf->p_buffer;
- i_channels = p_thread->i_channels;
- p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
- p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes;
- for( i_samples = p_in_buf->i_nb_samples; i_samples > 0; i_samples-- )
- {
- int i_cur_sample = p_thread->i_cur_sample;
- p_thread->p_data[0][i_cur_sample] = FloatToInt16( p_float[0] );
- if( i_channels > 1 )
- {
- p_thread->p_data[1][i_cur_sample] = FloatToInt16( p_float[1] );
- }
- p_float += i_channels;
- if( ++(p_thread->i_cur_sample) == 512 )
- {
- addPCM( p_thread->p_data );
- p_thread->i_cur_sample = 0;
- }
- }
- }
- /*****************************************************************************
- * Thread:
- *****************************************************************************/
- static void* Thread( vlc_object_t *p_this )
- {
- galaktos_thread_t *p_thread = (galaktos_thread_t*)p_this;
- int count=0;
- double realfps=0,fpsstart=0;
- int timed=0;
- int timestart=0;
- int mspf=0;
- int canc = vlc_savecancel ();
- /* Get on OpenGL provider */
- p_thread->p_opengl =
- (vout_thread_t *)vlc_object_create( p_this, sizeof( vout_thread_t ) );
- if( p_thread->p_opengl == NULL )
- {
- vlc_restorecancel (canc);
- return NULL;
- }
- vlc_object_attach( p_thread->p_opengl, p_this );
- /* Initialize vout parameters */
- vout_InitFormat( &p_thread->p_opengl->fmt_in,
- VLC_FOURCC('R','V','3','2'),
- p_thread->i_width, p_thread->i_height, 1 );
- p_thread->p_opengl->i_window_width = p_thread->i_width;
- p_thread->p_opengl->i_window_height = p_thread->i_height;
- p_thread->p_opengl->render.i_width = p_thread->i_width;
- p_thread->p_opengl->render.i_height = p_thread->i_width;
- p_thread->p_opengl->render.i_aspect = VOUT_ASPECT_FACTOR;
- p_thread->p_opengl->b_fullscreen = false;
- p_thread->p_opengl->i_alignment = 0;
- p_thread->p_opengl->fmt_in.i_sar_num = 1;
- p_thread->p_opengl->fmt_in.i_sar_den = 1;
- p_thread->p_opengl->fmt_render = p_thread->p_opengl->fmt_in;
- p_thread->p_module =
- module_need( p_thread->p_opengl, "opengl provider", NULL, false );
- if( p_thread->p_module == NULL )
- {
- msg_Err( p_thread, "unable to initialize OpenGL" );
- vlc_object_detach( p_thread->p_opengl );
- vlc_object_release( p_thread->p_opengl );
- vlc_restorecancel (canc);
- return NULL;
- }
- p_thread->p_opengl->pf_init( p_thread->p_opengl );
- setup_opengl( p_thread->i_width, p_thread->i_height );
- CreateRenderTarget(512, &RenderTargetTextureID, NULL);
- timestart=mdate()/1000;
- while( vlc_object_alive (p_thread) )
- {
- mspf = 1000 / 60;
- if( galaktos_update( p_thread ) == 1 )
- {
- vlc_object_kill( p_thread );
- }
- free( p_thread->psz_title );
- p_thread->psz_title = NULL;
- mtime_t now = mdate();
- if (++count%100==0)
- {
- realfps=100/((now/1000-fpsstart)/1000);
- // printf("%fn",realfps);
- fpsstart=now/1000;
- }
- //framerate limiter
- timed=mspf-(now/1000-timestart);
- // printf("%d,%dn",time,mspf);
- if (timed>0) msleep(1000*timed);
- // printf("Limiter %dn",(mdate()/1000-timestart));
- timestart=mdate()/1000;
- }
- /* Free the openGL provider */
- module_unneed( p_thread->p_opengl, p_thread->p_module );
- vlc_object_detach( p_thread->p_opengl );
- vlc_object_release( p_thread->p_opengl );
- vlc_restorecancel (canc);
- return NULL;
- }
- /*****************************************************************************
- * 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;
- /* Stop galaktos Thread */
- vlc_object_kill( p_sys->p_thread );
- galaktos_done( p_sys->p_thread );
- vlc_thread_join( p_sys->p_thread );
- /* Free data */
- vlc_object_detach( p_sys->p_thread );
- vlc_object_release( p_sys->p_thread );
- free( p_sys );
- }
- static char *TitleGet( vlc_object_t *p_this )
- {
- char *psz_title = NULL;
- input_thread_t *p_input =
- vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_ANYWHERE );
- if( p_input )
- {
- char *psz_orig = input_item_GetURI( input_GetItem( p_input ) );
- char *psz = strrchr( psz_orig, '/' );
- if( psz )
- {
- psz++;
- }
- else
- {
- psz = psz_orig;
- }
- if( psz && *psz )
- {
- psz_title = strdup( psz );
- }
- free( psz_orig );
- vlc_object_release( p_input );
- }
- return psz_title;
- }