mirror of https://code.videolan.org/videolan/vlc
340 lines
9.4 KiB
C++
340 lines
9.4 KiB
C++
/*****************************************************************************
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* vsxu.cpp: visualization module wrapper for Vovoid VSXu
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*****************************************************************************
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* Copyright © 2009-2012 the VideoLAN team, Vovoid Media Technologies
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*
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* Authors: Rémi Duraffort <ivoire@videolan.org>
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* Laurent Aimar
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* Jonatan "jaw" Wallmander
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*
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* Used the projectM implementation as reference for this file.
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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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_aout.h>
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#include <vlc_window.h>
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#include <vlc_opengl.h>
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#include <vlc_filter.h>
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// vsxu manager include
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#include <vsx_manager.h>
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#include <logo_intro.h>
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// class to handle cyclic buffer
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#include "cyclic_buffer.h"
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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static int Open ( vlc_object_t * );
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static void Close ( filter_t * );
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#define WIDTH_TEXT N_("Video width")
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#define WIDTH_LONGTEXT N_("The width of the video window, in pixels.")
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#define HEIGHT_TEXT N_("Video height")
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#define HEIGHT_LONGTEXT N_("The height of the video window, in pixels.")
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vlc_module_begin ()
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set_shortname( N_("vsxu"))
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set_description( N_("vsxu") )
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set_capability( "visualization", 0 )
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set_subcategory( SUBCAT_AUDIO_VISUAL )
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add_integer( "vsxu-width", 1280, WIDTH_TEXT, WIDTH_LONGTEXT )
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add_integer( "vsxu-height", 800, HEIGHT_TEXT, HEIGHT_LONGTEXT )
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add_shortcut( "vsxu" )
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set_callback( Open )
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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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namespace {
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struct filter_sys_t
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{
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vlc_thread_t thread;
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vlc_gl_t *gl;
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vlc_mutex_t lock;
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// mutex around the cyclic block
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vlc_mutex_t cyclic_block_mutex;
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// cyclic buffer to cache sound frames in
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cyclic_block_queue* vsxu_cyclic_buffer;
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int i_channels;
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bool b_quit;
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};
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} // namespace
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static block_t *DoWork( filter_t *, block_t * );
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static void *Thread( void * );
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static const struct FilterOperationInitializer {
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struct vlc_filter_operations ops {};
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FilterOperationInitializer()
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{
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ops.filter_audio = DoWork;
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ops.close = Close;
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};
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} filter_ops;
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/**
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* Open the module
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* @param p_this: the filter object
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* @return VLC_SUCCESS or vlc error codes
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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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p_sys = p_filter->p_sys = (filter_sys_t*)malloc( sizeof( *p_sys ) );
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if( unlikely( !p_sys ) )
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{
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return VLC_ENOMEM;
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}
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/* Create the object for the thread */
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p_sys->b_quit = false;
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p_sys->i_channels = aout_FormatNbChannels( &p_filter->fmt_in.audio );
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vlc_mutex_init( &p_sys->lock );
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vlc_mutex_init( &p_sys->cyclic_block_mutex );
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p_sys->vsxu_cyclic_buffer = new cyclic_block_queue();
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/* Create the openGL provider */
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vlc_window_cfg_t cfg;
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memset( &cfg, 0, sizeof(cfg) );
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cfg.is_decorated = true;
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cfg.width = var_InheritInteger( p_filter, "vsxu-width" );
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cfg.height = var_InheritInteger( p_filter, "vsxu-height" );
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p_sys->gl = vlc_gl_surface_Create( VLC_OBJECT(p_filter), &cfg, NULL, NULL);
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if( p_sys->gl == NULL )
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goto error;
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/* Create the thread */
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if( vlc_clone( &p_sys->thread, Thread, p_filter ) )
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{
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vlc_gl_surface_Destroy( p_sys->gl );
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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->ops = &filter_ops.ops;
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return VLC_SUCCESS;
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error:
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free( p_sys );
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return VLC_EGENERIC;
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}
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/**
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* Close the module
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* @param p_this: the filter object
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*/
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static void Close( filter_t *p_filter )
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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vlc_mutex_lock( &p_sys->lock );
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p_sys->b_quit = true;
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vlc_mutex_unlock( &p_sys->lock );
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vlc_join( p_sys->thread, NULL );
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/* Free the resources */
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vlc_gl_surface_Destroy( p_sys->gl );
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delete p_sys->vsxu_cyclic_buffer;
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free( p_sys );
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}
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/**
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* Do the actual work with the new sample
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* @param p_filter: filter object
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* @param p_in_buf: input buffer
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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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filter_sys_t *p_sys = p_filter->p_sys;
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vlc_mutex_lock( &p_sys->lock );
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vlc_mutex_lock( &p_sys->cyclic_block_mutex );
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unsigned i_nb_samples = __MIN( 1024,
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p_in_buf->i_nb_samples );
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const float *p_src = (float*)p_in_buf->p_buffer;
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// iterate block holder
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size_t i_bh_data_iter = 0;
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// calc 512-byte-aligned sample count to grab, we don't need more
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unsigned i_num_samples = i_nb_samples - i_nb_samples % 512;
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// muls are cheaper than divs
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float f_onedivchannels = 1.0f / (float)p_sys->i_channels;
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block_holder* p_block_holder = p_sys->vsxu_cyclic_buffer->get_insertion_object();
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p_block_holder->pts = p_in_buf->i_pts;
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for( unsigned i = 0; i < i_num_samples; i++ )
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{
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float f_v = 0;
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for( int j = 0; j < p_sys->i_channels; j++ )
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{
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f_v += p_src[p_sys->i_channels * i + j];
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}
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// insert into our little cyclic buffer
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p_block_holder->data[i_bh_data_iter] = f_v * f_onedivchannels;
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i_bh_data_iter++;
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if (i_bh_data_iter == 512 && i < i_num_samples-256)
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{
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p_block_holder = p_sys->vsxu_cyclic_buffer->get_insertion_object();
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p_block_holder->pts = p_in_buf->i_pts + 11609;
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i_bh_data_iter = 0;
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}
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}
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vlc_mutex_unlock( &p_sys->cyclic_block_mutex );
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vlc_mutex_unlock( &p_sys->lock );
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return p_in_buf;
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}
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/**
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* VSXu update thread which do the rendering
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* @param p_this: the p_thread object
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*/
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static void *Thread( void *p_data )
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{
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vlc_thread_set_name("vlc-vsxu");
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filter_t *p_filter = (filter_t*)p_data;
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filter_sys_t *p_sys = p_filter->p_sys;
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vlc_gl_t *gl = p_sys->gl;
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// our abstract manager holder
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vsx_manager_abs* manager = 0;
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// temp audio buffer for sending to vsxu through manager
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float f_sample_buf[512];
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// vsxu logo intro
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vsx_logo_intro* intro = 0;
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bool first = true;
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bool run = true;
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// tell main thread we are ready
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if( vlc_gl_MakeCurrent( gl ) != VLC_SUCCESS )
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{
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msg_Err( p_filter, "Can't attach gl context" );
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return NULL;
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}
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while ( run )
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{
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/* Manage the events */
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unsigned width, height;
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if( vlc_gl_surface_CheckSize( p_sys->gl, &width, &height ) )
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{
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/* ??? */
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}
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// look for control commands from outside the thread
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vlc_mutex_lock( &p_sys->lock );
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if( p_sys->b_quit )
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{
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run = false;
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}
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vlc_mutex_unlock( &p_sys->lock );
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if (first)
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{
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// only run this once
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first = false;
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// create a new manager
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manager = manager_factory();
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// init manager with the shared path and sound input type.
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manager->init( 0, "media_player" );
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// only show logo once
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// keep track of iterations
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static int i_iterations = 0;
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if ( i_iterations++ < 1 )
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{
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intro = new vsx_logo_intro();
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intro->set_destroy_textures( false );
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}
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}
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// lock cyclic buffer mutex and copy floats
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vlc_mutex_lock( &p_sys->cyclic_block_mutex );
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block_holder* bh = p_sys->vsxu_cyclic_buffer->consume();
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memcpy( &f_sample_buf[0], (void*)(&bh->data[0]), sizeof(float) * 512 );
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vlc_mutex_unlock( &p_sys->cyclic_block_mutex );
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// send sound pointer to vsxu
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manager->set_sound_wave( &f_sample_buf[0] );
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// render vsxu engine
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if (manager) manager->render();
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// render intro
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if (intro) intro->draw();
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// swap buffers etc.
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vlc_gl_Swap( gl );
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}
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// stop vsxu nicely (unloads textures and frees memory)
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if (manager) manager->stop();
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// call manager factory to destruct our manager object
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if (manager) manager_destroy( manager );
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// delete the intro (if ever allocated)
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if (intro) delete intro;
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vlc_gl_ReleaseCurrent( gl );
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// clean up the cyclic buffer
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vlc_mutex_lock( &p_sys->cyclic_block_mutex );
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p_sys->vsxu_cyclic_buffer->reset();
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vlc_mutex_unlock( &p_sys->cyclic_block_mutex );
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// die
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return NULL;
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}
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