goom.c
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上传日期:2009-03-27
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文件大小:14k
- /*****************************************************************************
- * goom.c: based on libgoom (see http://ios.free.fr/?page=projet&quoi=1)
- *****************************************************************************
- * Copyright (C) 2003 VideoLAN
- * $Id: goom.c 8978 2004-10-12 12:58:24Z gbazin $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- * Gildas Bazin <gbazin@videolan.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h> /* malloc(), free() */
- #include <string.h> /* strdup() */
- #include <errno.h>
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #include <vlc/aout.h>
- #include <vlc/vout.h>
- #include "aout_internal.h"
- #ifdef USE_GOOM_TREE
- # ifdef OLD_GOOM
- # include "goom_core.h"
- # define PluginInfo void
- # define goom_update(a,b,c,d,e,f) goom_update(b,c,d,e,f)
- # define goom_close(a) goom_close()
- # define goom_init(a,b) NULL; goom_init(a,b,0); goom_set_font(0,0,0)
- # else
- # include "goom.h"
- # endif
- #else
- # include <goom/goom.h>
- #endif
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- static int Open ( vlc_object_t * );
- static void Close ( vlc_object_t * );
- #define WIDTH_TEXT N_("Goom display width")
- #define HEIGHT_TEXT N_("Goom display height")
- #define RES_LONGTEXT N_("Allows you to change the resolution of the "
- "Goom display (bigger resolution will be prettier but more CPU intensive).")
- #define SPEED_TEXT N_("Goom animation speed")
- #define SPEED_LONGTEXT N_("Allows you to reduce the speed of the animation "
- "(default 6, max 10).")
- #define MAX_SPEED 10
- vlc_module_begin();
- set_description( _("Goom effect") );
- set_capability( "audio filter", 0 );
- add_integer( "goom-width", 320, NULL,
- WIDTH_TEXT, RES_LONGTEXT, VLC_FALSE );
- add_integer( "goom-height", 240, NULL,
- HEIGHT_TEXT, RES_LONGTEXT, VLC_FALSE );
- add_integer( "goom-speed", 6, NULL,
- SPEED_TEXT, SPEED_LONGTEXT, VLC_FALSE );
- set_callbacks( Open, Close );
- add_shortcut( "goom" );
- vlc_module_end();
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- #define MAX_BLOCKS 100
- #define GOOM_DELAY 400000
- typedef struct
- {
- VLC_COMMON_MEMBERS
- vout_thread_t *p_vout;
- char *psz_title;
- vlc_mutex_t lock;
- vlc_cond_t wait;
- /* Audio properties */
- int i_channels;
- /* Audio samples queue */
- block_t *pp_blocks[MAX_BLOCKS];
- int i_blocks;
- audio_date_t date;
- } goom_thread_t;
- typedef struct aout_filter_sys_t
- {
- goom_thread_t *p_thread;
- } aout_filter_sys_t;
- 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 * );
- /*****************************************************************************
- * 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;
- goom_thread_t *p_thread;
- vlc_value_t width, height;
- 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 goom thread */
- p_sys->p_thread = p_thread =
- vlc_object_create( p_filter, sizeof( goom_thread_t ) );
- vlc_object_attach( p_thread, p_this );
- var_Create( p_thread, "goom-width", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
- var_Get( p_thread, "goom-width", &width );
- var_Create( p_thread, "goom-height", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
- var_Get( p_thread, "goom-height", &height );
- p_thread->p_vout =
- vout_Request( p_filter, NULL, width.i_int, height.i_int,
- VLC_FOURCC('R','V','3','2'),
- VOUT_ASPECT_FACTOR * width.i_int/height.i_int );
- if( p_thread->p_vout == NULL )
- {
- msg_Err( p_filter, "no suitable vout module" );
- vlc_object_detach( p_thread );
- vlc_object_destroy( p_thread );
- free( p_sys );
- return VLC_EGENERIC;
- }
- vlc_mutex_init( p_filter, &p_thread->lock );
- vlc_cond_init( p_filter, &p_thread->wait );
- p_thread->i_blocks = 0;
- aout_DateInit( &p_thread->date, p_filter->output.i_rate );
- aout_DateSet( &p_thread->date, 0 );
- p_thread->i_channels = aout_FormatNbChannels( &p_filter->input );
- p_thread->psz_title = TitleGet( VLC_OBJECT( p_filter ) );
- if( vlc_thread_create( p_thread, "Goom Update Thread", Thread,
- VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
- {
- msg_Err( p_filter, "cannot lauch goom thread" );
- vout_Destroy( p_thread->p_vout );
- vlc_mutex_destroy( &p_thread->lock );
- vlc_cond_destroy( &p_thread->wait );
- if( p_thread->psz_title ) free( p_thread->psz_title );
- vlc_object_detach( p_thread );
- vlc_object_destroy( p_thread );
- free( p_sys );
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * DoWork: process samples buffer
- *****************************************************************************
- * This function queues the audio buffer to be processed by the goom 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 )
- {
- aout_filter_sys_t *p_sys = p_filter->p_sys;
- block_t *p_block;
- p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
- p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes;
- /* Queue sample */
- vlc_mutex_lock( &p_sys->p_thread->lock );
- if( p_sys->p_thread->i_blocks == MAX_BLOCKS )
- {
- vlc_mutex_unlock( &p_sys->p_thread->lock );
- return;
- }
- p_block = block_New( p_sys->p_thread, p_in_buf->i_nb_bytes );
- if( !p_block ) return;
- memcpy( p_block->p_buffer, p_in_buf->p_buffer, p_in_buf->i_nb_bytes );
- p_block->i_pts = p_in_buf->start_date;
- p_sys->p_thread->pp_blocks[p_sys->p_thread->i_blocks++] = p_block;
- vlc_cond_signal( &p_sys->p_thread->wait );
- vlc_mutex_unlock( &p_sys->p_thread->lock );
- }
- /*****************************************************************************
- * 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 );
- }
- /*****************************************************************************
- * Fill buffer
- *****************************************************************************/
- static int FillBuffer( int16_t *p_data, int *pi_data,
- audio_date_t *pi_date, audio_date_t *pi_date_end,
- goom_thread_t *p_this )
- {
- int i_samples = 0;
- block_t *p_block;
- while( *pi_data < 512 )
- {
- if( !p_this->i_blocks ) return VLC_EGENERIC;
- p_block = p_this->pp_blocks[0];
- i_samples = __MIN( 512 - *pi_data, p_block->i_buffer /
- sizeof(float) / p_this->i_channels );
- /* Date management */
- if( p_block->i_pts > 0 &&
- p_block->i_pts != aout_DateGet( pi_date_end ) )
- {
- aout_DateSet( pi_date_end, p_block->i_pts );
- }
- p_block->i_pts = 0;
- aout_DateIncrement( pi_date_end, i_samples );
- while( i_samples > 0 )
- {
- float *p_float = (float *)p_block->p_buffer;
- p_data[*pi_data] = FloatToInt16( p_float[0] );
- if( p_this->i_channels > 1 )
- p_data[512 + *pi_data] = FloatToInt16( p_float[1] );
- (*pi_data)++;
- p_block->p_buffer += (sizeof(float) * p_this->i_channels);
- p_block->i_buffer -= (sizeof(float) * p_this->i_channels);
- i_samples--;
- }
- if( !p_block->i_buffer )
- {
- block_Release( p_block );
- p_this->i_blocks--;
- if( p_this->i_blocks )
- memmove( p_this->pp_blocks, p_this->pp_blocks + 1,
- p_this->i_blocks * sizeof(block_t *) );
- }
- }
- *pi_date = *pi_date_end;
- *pi_data = 0;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Thread:
- *****************************************************************************/
- static void Thread( vlc_object_t *p_this )
- {
- goom_thread_t *p_thread = (goom_thread_t*)p_this;
- vlc_value_t width, height, speed;
- audio_date_t i_pts;
- int16_t p_data[2][512];
- int i_data = 0, i_count = 0;
- PluginInfo *p_plugin_info;
- var_Get( p_this, "goom-width", &width );
- var_Get( p_this, "goom-height", &height );
- var_Create( p_thread, "goom-speed", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
- var_Get( p_thread, "goom-speed", &speed );
- speed.i_int = MAX_SPEED - speed.i_int;
- if( speed.i_int < 0 ) speed.i_int = 0;
- p_plugin_info = goom_init( width.i_int, height.i_int );
- while( !p_thread->b_die )
- {
- uint32_t *plane;
- picture_t *p_pic;
- /* goom_update is damn slow, so just copy data and release the lock */
- vlc_mutex_lock( &p_thread->lock );
- if( FillBuffer( (int16_t *)p_data, &i_data, &i_pts,
- &p_thread->date, p_thread ) != VLC_SUCCESS )
- vlc_cond_wait( &p_thread->wait, &p_thread->lock );
- vlc_mutex_unlock( &p_thread->lock );
- /* Speed selection */
- if( speed.i_int && (++i_count % (speed.i_int+1)) ) continue;
- /* Frame dropping if necessary */
- if( aout_DateGet( &i_pts ) + GOOM_DELAY <= mdate() ) continue;
- plane = goom_update( p_plugin_info, p_data, 0, 0.0,
- p_thread->psz_title, NULL );
- if( p_thread->psz_title )
- {
- free( p_thread->psz_title );
- p_thread->psz_title = NULL;
- }
- while( !( p_pic = vout_CreatePicture( p_thread->p_vout, 0, 0, 0 ) ) &&
- !p_thread->b_die )
- {
- msleep( VOUT_OUTMEM_SLEEP );
- }
- if( p_pic == NULL ) break;
- memcpy( p_pic->p[0].p_pixels, plane, width.i_int * height.i_int * 4 );
- vout_DatePicture( p_thread->p_vout, p_pic,
- aout_DateGet( &i_pts ) + GOOM_DELAY );
- vout_DisplayPicture( p_thread->p_vout, p_pic );
- }
- goom_close( p_plugin_info );
- }
- /*****************************************************************************
- * 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 Goom Thread */
- p_sys->p_thread->b_die = VLC_TRUE;
- vlc_mutex_lock( &p_sys->p_thread->lock );
- vlc_cond_signal( &p_sys->p_thread->wait );
- vlc_mutex_unlock( &p_sys->p_thread->lock );
- vlc_thread_join( p_sys->p_thread );
- /* Free data */
- vout_Request( p_filter, p_sys->p_thread->p_vout, 0, 0, 0, 0 );
- vlc_mutex_destroy( &p_sys->p_thread->lock );
- vlc_cond_destroy( &p_sys->p_thread->wait );
- vlc_object_detach( p_sys->p_thread );
- while( p_sys->p_thread->i_blocks-- )
- {
- block_Release( p_sys->p_thread->pp_blocks[p_sys->p_thread->i_blocks] );
- }
- vlc_object_destroy( 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 = strrchr( p_input->input.p_item->psz_uri, '/' );
- if( psz )
- {
- psz++;
- }
- else
- {
- psz = p_input->input.p_item->psz_uri;
- }
- if( psz && *psz )
- {
- psz_title = strdup( psz );
- }
- vlc_object_release( p_input );
- }
- return psz_title;
- }