1 /*****************************************************************************
2 * vsxu.cpp: visualization module wrapper for Vovoid VSXu
3 *****************************************************************************
4 * Copyright © 2009-2012 the VideoLAN team, Vovoid Media Technologies
7 * Authors: Rémi Duraffort <ivoire@videolan.org>
9 * Jonatan "jaw" Wallmander
11 * Used the projectM implementation as reference for this file.
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU Lesser General Public License as published by
15 * the Free Software Foundation; either version 2.1 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU Lesser General Public License for more details.
23 * You should have received a copy of the GNU Lesser General Public License
24 * along with this program; if not, write to the Free Software Foundation,
25 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
26 *****************************************************************************/
31 #ifndef __STDC_CONSTANT_MACROS
32 # define __STDC_CONSTANT_MACROS
35 #include <vlc_common.h>
36 #include <vlc_plugin.h>
38 #include <vlc_vout_window.h>
39 #include <vlc_opengl.h>
40 #include <vlc_filter.h>
42 // vsxu manager include
43 #include <vsx_manager.h>
44 #include <logo_intro.h>
46 // class to handle cyclic buffer
47 #include "cyclic_buffer.h"
49 /*****************************************************************************
51 *****************************************************************************/
52 static int Open ( vlc_object_t * );
53 static void Close ( vlc_object_t * );
55 #define WIDTH_TEXT N_("Video width")
56 #define WIDTH_LONGTEXT N_("The width of the video window, in pixels.")
58 #define HEIGHT_TEXT N_("Video height")
59 #define HEIGHT_LONGTEXT N_("The height of the video window, in pixels.")
62 set_shortname( N_("vsxu"))
63 set_description( N_("vsxu") )
64 set_capability( "visualization", 0 )
65 set_category( CAT_AUDIO )
66 set_subcategory( SUBCAT_AUDIO_VISUAL )
67 add_integer( "vsxu-width", 1280, WIDTH_TEXT, WIDTH_LONGTEXT,
69 add_integer( "vsxu-height", 800, HEIGHT_TEXT, HEIGHT_LONGTEXT,
71 add_shortcut( "vsxu" )
72 set_callbacks( Open, Close )
76 /*****************************************************************************
78 *****************************************************************************/
87 // mutex around the cyclic block
88 vlc_mutex_t cyclic_block_mutex;
90 // cyclic buffer to cache sound frames in
91 cyclic_block_queue* vsxu_cyclic_buffer;
98 static block_t *DoWork( filter_t *, block_t * );
99 static void *Thread( void * );
103 * @param p_this: the filter object
104 * @return VLC_SUCCESS or vlc error codes
106 static int Open( vlc_object_t * p_this )
108 filter_t *p_filter = (filter_t *)p_this;
111 p_sys = p_filter->p_sys = (filter_sys_t*)malloc( sizeof( *p_sys ) );
112 if( unlikely( !p_sys ) )
117 /* Create the object for the thread */
118 p_sys->b_quit = false;
119 p_sys->i_channels = aout_FormatNbChannels( &p_filter->fmt_in.audio );
120 vlc_mutex_init( &p_sys->lock );
121 vlc_mutex_init( &p_sys->cyclic_block_mutex );
122 p_sys->vsxu_cyclic_buffer = new cyclic_block_queue();
124 /* Create the openGL provider */
125 vout_window_cfg_t cfg;
127 memset( &cfg, 0, sizeof(cfg) );
128 cfg.width = var_InheritInteger( p_filter, "vsxu-width" );
129 cfg.height = var_InheritInteger( p_filter, "vsxu-height" );
131 p_sys->gl = vlc_gl_surface_Create( VLC_OBJECT(p_filter), &cfg, NULL );
132 if( p_sys->gl == NULL )
135 /* Create the thread */
136 if( vlc_clone( &p_sys->thread, Thread, p_filter,
137 VLC_THREAD_PRIORITY_LOW ) )
139 vlc_gl_surface_Destroy( p_sys->gl );
143 p_filter->fmt_in.audio.i_format = VLC_CODEC_FL32;
144 p_filter->fmt_out.audio = p_filter->fmt_in.audio;
145 p_filter->pf_audio_filter = DoWork;
150 vlc_mutex_destroy( &p_sys->cyclic_block_mutex );
151 vlc_mutex_destroy( &p_sys->lock );
158 * @param p_this: the filter object
160 static void Close( vlc_object_t *p_this )
162 filter_t *p_filter = (filter_t *)p_this;
163 filter_sys_t *p_sys = p_filter->p_sys;
165 vlc_mutex_lock( &p_sys->lock );
166 p_sys->b_quit = true;
167 vlc_mutex_unlock( &p_sys->lock );
169 vlc_join( p_sys->thread, NULL );
171 /* Free the ressources */
172 vlc_gl_surface_Destroy( p_sys->gl );
173 vlc_mutex_destroy( &p_sys->cyclic_block_mutex );
174 vlc_mutex_destroy( &p_sys->lock );
175 delete p_sys->vsxu_cyclic_buffer;
180 * Do the actual work with the new sample
181 * @param p_filter: filter object
182 * @param p_in_buf: input buffer
184 static block_t *DoWork( filter_t *p_filter, block_t *p_in_buf )
186 filter_sys_t *p_sys = p_filter->p_sys;
188 vlc_mutex_lock( &p_sys->lock );
189 vlc_mutex_lock( &p_sys->cyclic_block_mutex );
191 unsigned i_nb_samples = __MIN( 1024,
192 p_in_buf->i_nb_samples );
194 const float *p_src = (float*)p_in_buf->p_buffer;
195 // iterate block holder
196 size_t i_bh_data_iter = 0;
198 // calc 512-byte-aligned sample count to grab, we don't need more
199 unsigned i_num_samples = i_nb_samples - i_nb_samples % 512;
201 // muls are cheaper than divs
202 float f_onedivchannels = 1.0f / (float)p_sys->i_channels;
204 block_holder* p_block_holder = p_sys->vsxu_cyclic_buffer->get_insertion_object();
205 p_block_holder->pts = p_in_buf->i_pts;
206 for( unsigned i = 0; i < i_num_samples; i++ )
209 for( int j = 0; j < p_sys->i_channels; j++ )
211 f_v += p_src[p_sys->i_channels * i + j];
214 // insert into our little cyclic buffer
215 p_block_holder->data[i_bh_data_iter] = f_v * f_onedivchannels;
217 if (i_bh_data_iter == 512 && i < i_num_samples-256)
219 p_block_holder = p_sys->vsxu_cyclic_buffer->get_insertion_object();
220 p_block_holder->pts = p_in_buf->i_pts + 11609;
226 vlc_mutex_unlock( &p_sys->cyclic_block_mutex );
227 vlc_mutex_unlock( &p_sys->lock );
232 * VSXu update thread which do the rendering
233 * @param p_this: the p_thread object
235 static void *Thread( void *p_data )
237 filter_t *p_filter = (filter_t*)p_data;
238 filter_sys_t *p_sys = p_filter->p_sys;
239 vlc_gl_t *gl = p_sys->gl;
241 // our abstract manager holder
242 vsx_manager_abs* manager = 0;
244 // temp audio buffer for sending to vsxu through manager
245 float f_sample_buf[512];
248 vsx_logo_intro* intro = 0;
253 // tell main thread we are ready
254 vlc_gl_MakeCurrent( gl );
258 /* Manage the events */
259 unsigned width, height;
261 if( vlc_gl_surface_CheckSize( p_sys->gl, &width, &height ) )
266 // look for control commands from outside the thread
267 vlc_mutex_lock( &p_sys->lock );
272 vlc_mutex_unlock( &p_sys->lock );
276 // only run this once
279 // create a new manager
280 manager = manager_factory();
282 // init manager with the shared path and sound input type.
283 manager->init( 0, "media_player" );
285 // only show logo once
286 // keep track of iterations
287 static int i_iterations = 0;
288 if ( i_iterations++ < 1 )
290 intro = new vsx_logo_intro();
291 intro->set_destroy_textures( false );
295 // lock cyclic buffer mutex and copy floats
296 vlc_mutex_lock( &p_sys->cyclic_block_mutex );
297 block_holder* bh = p_sys->vsxu_cyclic_buffer->consume();
298 memcpy( &f_sample_buf[0], (void*)(&bh->data[0]), sizeof(float) * 512 );
299 vlc_mutex_unlock( &p_sys->cyclic_block_mutex );
301 // send sound pointer to vsxu
302 manager->set_sound_wave( &f_sample_buf[0] );
304 // render vsxu engine
305 if (manager) manager->render();
308 if (intro) intro->draw();
311 if( !vlc_gl_Lock(gl) )
318 // stop vsxu nicely (unloads textures and frees memory)
319 if (manager) manager->stop();
321 // call manager factory to destruct our manager object
322 if (manager) manager_destroy( manager );
324 // delete the intro (if ever allocated)
325 if (intro) delete intro;
327 vlc_gl_ReleaseCurrent( gl );
329 // clean up the cyclic buffer
330 vlc_mutex_lock( &p_sys->cyclic_block_mutex );
331 p_sys->vsxu_cyclic_buffer->reset();
332 vlc_mutex_unlock( &p_sys->cyclic_block_mutex );