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>
41 // vsxu manager include
42 #include <vsx_manager.h>
43 #include <logo_intro.h>
45 // class to handle cyclic buffer
46 #include "cyclic_buffer.h"
48 /*****************************************************************************
50 *****************************************************************************/
51 static int Open ( vlc_object_t * );
52 static void Close ( vlc_object_t * );
54 #define WIDTH_TEXT N_("Video width")
55 #define WIDTH_LONGTEXT N_("The width of the video window, in pixels.")
57 #define HEIGHT_TEXT N_("Video height")
58 #define HEIGHT_LONGTEXT N_("The height of the video window, in pixels.")
61 set_shortname( N_("vsxu"))
62 set_description( N_("vsxu") )
63 set_capability( "visualization", 0 )
64 set_category( CAT_AUDIO )
65 set_subcategory( SUBCAT_AUDIO_VISUAL )
66 add_integer( "vsxu-width", 1280, WIDTH_TEXT, WIDTH_LONGTEXT,
68 add_integer( "vsxu-height", 800, HEIGHT_TEXT, HEIGHT_LONGTEXT,
70 add_shortcut( "vsxu" )
71 set_callbacks( Open, Close )
75 /*****************************************************************************
77 *****************************************************************************/
86 // mutex around the cyclic block
87 vlc_mutex_t cyclic_block_mutex;
89 // cyclic buffer to cache sound frames in
90 cyclic_block_queue* vsxu_cyclic_buffer;
97 static block_t *DoWork( filter_t *, block_t * );
98 static void *Thread( void * );
102 * @param p_this: the filter object
103 * @return VLC_SUCCESS or vlc error codes
105 static int Open( vlc_object_t * p_this )
107 filter_t *p_filter = (filter_t *)p_this;
110 p_sys = p_filter->p_sys = (filter_sys_t*)malloc( sizeof( *p_sys ) );
111 if( unlikely( !p_sys ) )
116 /* Create the object for the thread */
117 p_sys->b_quit = false;
118 p_sys->i_channels = aout_FormatNbChannels( &p_filter->fmt_in.audio );
119 vlc_mutex_init( &p_sys->lock );
120 vlc_mutex_init( &p_sys->cyclic_block_mutex );
121 p_sys->vsxu_cyclic_buffer = new cyclic_block_queue();
123 /* Create the openGL provider */
124 vout_window_cfg_t cfg;
126 memset( &cfg, 0, sizeof(cfg) );
127 cfg.width = var_InheritInteger( p_filter, "vsxu-width" );
128 cfg.height = var_InheritInteger( p_filter, "vsxu-height" );
130 p_sys->gl = vlc_gl_surface_Create( VLC_OBJECT(p_filter), &cfg, NULL );
131 if( p_sys->gl == NULL )
134 /* Create the thread */
135 if( vlc_clone( &p_sys->thread, Thread, p_filter,
136 VLC_THREAD_PRIORITY_LOW ) )
138 vlc_gl_surface_Destroy( p_sys->gl );
142 p_filter->fmt_in.audio.i_format = VLC_CODEC_FL32;
143 p_filter->fmt_out.audio = p_filter->fmt_in.audio;
144 p_filter->pf_audio_filter = DoWork;
149 vlc_mutex_destroy( &p_sys->cyclic_block_mutex );
150 vlc_mutex_destroy( &p_sys->lock );
157 * @param p_this: the filter object
159 static void Close( vlc_object_t *p_this )
161 filter_t *p_filter = (filter_t *)p_this;
162 filter_sys_t *p_sys = p_filter->p_sys;
164 vlc_mutex_lock( &p_sys->lock );
165 p_sys->b_quit = true;
166 vlc_mutex_unlock( &p_sys->lock );
168 vlc_join( p_sys->thread, NULL );
170 /* Free the ressources */
171 vlc_gl_surface_Destroy( p_sys->gl );
172 vlc_mutex_destroy( &p_sys->cyclic_block_mutex );
173 vlc_mutex_destroy( &p_sys->lock );
174 delete p_sys->vsxu_cyclic_buffer;
179 * Do the actual work with the new sample
180 * @param p_filter: filter object
181 * @param p_in_buf: input buffer
183 static block_t *DoWork( filter_t *p_filter, block_t *p_in_buf )
185 filter_sys_t *p_sys = p_filter->p_sys;
187 vlc_mutex_lock( &p_sys->lock );
188 vlc_mutex_lock( &p_sys->cyclic_block_mutex );
190 unsigned i_nb_samples = __MIN( 1024,
191 p_in_buf->i_nb_samples );
193 const float *p_src = (float*)p_in_buf->p_buffer;
194 // iterate block holder
195 size_t i_bh_data_iter = 0;
197 // calc 512-byte-aligned sample count to grab, we don't need more
198 unsigned i_num_samples = i_nb_samples - i_nb_samples % 512;
200 // muls are cheaper than divs
201 float f_onedivchannels = 1.0f / (float)p_sys->i_channels;
203 block_holder* p_block_holder = p_sys->vsxu_cyclic_buffer->get_insertion_object();
204 p_block_holder->pts = p_in_buf->i_pts;
205 for( unsigned i = 0; i < i_num_samples; i++ )
208 for( int j = 0; j < p_sys->i_channels; j++ )
210 f_v += p_src[p_sys->i_channels * i + j];
213 // insert into our little cyclic buffer
214 p_block_holder->data[i_bh_data_iter] = f_v * f_onedivchannels;
216 if (i_bh_data_iter == 512 && i < i_num_samples-256)
218 p_block_holder = p_sys->vsxu_cyclic_buffer->get_insertion_object();
219 p_block_holder->pts = p_in_buf->i_pts + 11609;
225 vlc_mutex_unlock( &p_sys->cyclic_block_mutex );
226 vlc_mutex_unlock( &p_sys->lock );
231 * VSXu update thread which do the rendering
232 * @param p_this: the p_thread object
234 static void *Thread( void *p_data )
236 filter_t *p_filter = (filter_t*)p_data;
237 filter_sys_t *p_sys = p_filter->p_sys;
238 vlc_gl_t *gl = p_sys->gl;
240 // our abstract manager holder
241 vsx_manager_abs* manager = 0;
243 // temp audio buffer for sending to vsxu through manager
244 float f_sample_buf[512];
247 vsx_logo_intro* intro = 0;
252 // tell main thread we are ready
253 vlc_gl_MakeCurrent( gl );
257 /* Manage the events */
258 unsigned width, height;
260 if( vlc_gl_surface_CheckSize( p_sys->gl, &width, &height ) )
265 // look for control commands from outside the thread
266 vlc_mutex_lock( &p_sys->lock );
271 vlc_mutex_unlock( &p_sys->lock );
275 // only run this once
278 // create a new manager
279 manager = manager_factory();
281 // init manager with the shared path and sound input type.
282 manager->init( 0, "media_player" );
284 // only show logo once
285 // keep track of iterations
286 static int i_iterations = 0;
287 if ( i_iterations++ < 1 )
289 intro = new vsx_logo_intro();
290 intro->set_destroy_textures( false );
294 // lock cyclic buffer mutex and copy floats
295 vlc_mutex_lock( &p_sys->cyclic_block_mutex );
296 block_holder* bh = p_sys->vsxu_cyclic_buffer->consume();
297 memcpy( &f_sample_buf[0], (void*)(&bh->data[0]), sizeof(float) * 512 );
298 vlc_mutex_unlock( &p_sys->cyclic_block_mutex );
300 // send sound pointer to vsxu
301 manager->set_sound_wave( &f_sample_buf[0] );
303 // render vsxu engine
304 if (manager) manager->render();
307 if (intro) intro->draw();
310 if( !vlc_gl_Lock(gl) )
317 // stop vsxu nicely (unloads textures and frees memory)
318 if (manager) manager->stop();
320 // call manager factory to destruct our manager object
321 if (manager) manager_destroy( manager );
323 // delete the intro (if ever allocated)
324 if (intro) delete intro;
326 vlc_gl_ReleaseCurrent( gl );
328 // clean up the cyclic buffer
329 vlc_mutex_lock( &p_sys->cyclic_block_mutex );
330 p_sys->vsxu_cyclic_buffer->reset();
331 vlc_mutex_unlock( &p_sys->cyclic_block_mutex );