1 /*****************************************************************************
2 * video_output.c : video output thread
3 * This module describes the programming interface for video output threads.
4 * It includes functions allowing to open a new thread, send pictures to a
5 * thread, and destroy a previously oppened video output thread.
6 *****************************************************************************
7 * Copyright (C) 2000 VideoLAN
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
31 #include <errno.h> /* ENOMEM */
32 #include <stdlib.h> /* free() */
33 #include <stdio.h> /* sprintf() */
34 #include <string.h> /* strerror() */
42 #include "video_output.h"
43 #include "video_text.h"
44 #include "video_spu.h"
45 #include "video_yuv.h"
50 /*****************************************************************************
52 *****************************************************************************/
53 static int BinaryLog ( u32 i );
54 static void MaskToShift ( int *pi_left, int *pi_right, u32 i_mask );
55 static int InitThread ( vout_thread_t *p_vout );
56 static void RunThread ( vout_thread_t *p_vout );
57 static void ErrorThread ( vout_thread_t *p_vout );
58 static void EndThread ( vout_thread_t *p_vout );
59 static void DestroyThread ( vout_thread_t *p_vout, int i_status );
60 static void Print ( vout_thread_t *p_vout, int i_x, int i_y,
61 int i_h_align, int i_v_align,
62 unsigned char *psz_text );
63 static void SetBufferArea ( vout_thread_t *p_vout, int i_x, int i_y,
65 static void SetBufferPicture ( vout_thread_t *p_vout, picture_t *p_pic );
66 static void RenderPicture ( vout_thread_t *p_vout, picture_t *p_pic );
67 static void RenderPictureInfo ( vout_thread_t *p_vout, picture_t *p_pic );
68 static void RenderSubPicture ( vout_thread_t *p_vout,
69 subpicture_t *p_subpic );
70 static void RenderInterface ( vout_thread_t *p_vout );
71 static int RenderIdle ( vout_thread_t *p_vout );
72 static void RenderInfo ( vout_thread_t *p_vout );
73 static void Synchronize ( vout_thread_t *p_vout, s64 i_delay );
74 static int Manage ( vout_thread_t *p_vout );
75 static int Align ( vout_thread_t *p_vout, int *pi_x,
76 int *pi_y, int i_width, int i_height,
77 int i_h_align, int i_v_align );
78 static void SetPalette ( p_vout_thread_t p_vout, u16 *red,
79 u16 *green, u16 *blue, u16 *transp );
81 /*****************************************************************************
82 * vout_CreateThread: creates a new video output thread
83 *****************************************************************************
84 * This function creates a new video output thread, and returns a pointer
85 * to its description. On error, it returns NULL.
86 * If pi_status is NULL, then the function will block until the thread is ready.
87 * If not, it will be updated using one of the THREAD_* constants.
88 *****************************************************************************/
89 vout_thread_t * vout_CreateThread ( char *psz_display, int i_root_window,
90 int i_width, int i_height, int *pi_status,
91 int i_method, void *p_data )
93 vout_thread_t * p_vout; /* thread descriptor */
94 typedef void ( vout_getplugin_t ) ( vout_thread_t * p_vout );
95 int i_status; /* thread status */
96 int i_index; /* index for array initialization */
97 int i_best_index = 0, i_best_score = 0;
99 /* Allocate descriptor */
101 p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
104 intf_ErrMsg( "error: %s\n", strerror(ENOMEM) );
108 p_vout->p_set_palette = SetPalette;
110 /* Get a suitable video plugin */
111 for( i_index = 0 ; i_index < p_main->p_bank->i_plugin_count ; i_index++ )
113 /* If there's a plugin in p_info ... */
114 if( p_main->p_bank->p_info[ i_index ] != NULL )
116 /* ... and if this plugin provides the functions we want ... */
117 if( p_main->p_bank->p_info[ i_index ]->vout_GetPlugin != NULL )
119 /* ... and if this plugin has a good score ... */
120 if( p_main->p_bank->p_info[ i_index ]->i_score > i_best_score )
122 /* ... then take it */
123 i_best_score = p_main->p_bank->p_info[ i_index ]->i_score;
124 i_best_index = i_index;
130 if( i_best_score == 0 )
136 /* Get the plugin functions */
137 ( (vout_getplugin_t *)
138 p_main->p_bank->p_info[ i_best_index ]->vout_GetPlugin )( p_vout );
140 /* Initialize thread properties - thread id and locks will be initialized
144 p_vout->b_active = 0;
145 p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
146 *p_vout->pi_status = THREAD_CREATE;
148 /* Initialize some fields used by the system-dependant method - these
149 * fields will probably be modified by the method, and are only
151 p_vout->i_changes = 0;
152 p_vout->i_width = i_width;
153 p_vout->i_height = i_height;
154 p_vout->i_bytes_per_line = i_width * 2;
155 p_vout->i_screen_depth = 15;
156 p_vout->i_bytes_per_pixel = 2;
157 p_vout->f_gamma = VOUT_GAMMA;
159 p_vout->b_grayscale = main_GetIntVariable( VOUT_GRAYSCALE_VAR,
160 VOUT_GRAYSCALE_DEFAULT );
162 p_vout->b_interface = 0;
165 intf_DbgMsg( "wished configuration: %dx%d, %d/%d bpp (%d Bpl)\n",
166 p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
167 p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line );
169 /* Initialize idle screen */
170 p_vout->last_display_date = mdate();
171 p_vout->last_display_date = 0;
172 p_vout->last_idle_date = 0;
175 /* Initialize statistics fields */
176 p_vout->render_time = 0;
177 p_vout->c_fps_samples = 0;
180 /* Initialize buffer index */
181 p_vout->i_buffer_index = 0;
183 /* Initialize pictures and subpictures - translation tables and functions
184 * will be initialized later in InitThread */
185 for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
187 p_vout->p_picture[i_index].i_type = EMPTY_PICTURE;
188 p_vout->p_picture[i_index].i_status = FREE_PICTURE;
190 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
192 p_vout->p_subpicture[i_index].i_type = EMPTY_SUBPICTURE;
193 p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE;
195 p_vout->i_pictures = 0;
197 /* Initialize synchronization information */
198 p_vout->i_synchro_level = VOUT_SYNCHRO_LEVEL_START;
200 /* Create and initialize system-dependant method - this function issues its
201 * own error messages */
202 if( p_vout->p_sys_create( p_vout, psz_display, i_root_window, p_data ) )
207 intf_DbgMsg( "actual configuration: %dx%d, %d/%d bpp (%d Bpl), "
208 "masks: 0x%x/0x%x/0x%x\n",
209 p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
210 p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line,
211 p_vout->i_red_mask, p_vout->i_green_mask,
212 p_vout->i_blue_mask );
214 /* Calculate shifts from system-updated masks */
215 MaskToShift( &p_vout->i_red_lshift, &p_vout->i_red_rshift,
216 p_vout->i_red_mask );
217 MaskToShift( &p_vout->i_green_lshift, &p_vout->i_green_rshift,
218 p_vout->i_green_mask );
219 MaskToShift( &p_vout->i_blue_lshift, &p_vout->i_blue_rshift,
220 p_vout->i_blue_mask );
222 /* Set some useful colors */
223 p_vout->i_white_pixel = RGB2PIXEL( p_vout, 255, 255, 255 );
224 p_vout->i_black_pixel = RGB2PIXEL( p_vout, 0, 0, 0 );
225 p_vout->i_gray_pixel = RGB2PIXEL( p_vout, 128, 128, 128 );
226 p_vout->i_blue_pixel = RGB2PIXEL( p_vout, 0, 0, 50 );
228 /* Load fonts - fonts must be initialized after the system method since
229 * they may be dependant on screen depth and other thread properties */
230 p_vout->p_default_font = vout_LoadFont( DATA_PATH "/" VOUT_DEFAULT_FONT );
231 if( p_vout->p_default_font == NULL )
233 p_vout->p_default_font = vout_LoadFont( "share/" VOUT_DEFAULT_FONT );
235 if( p_vout->p_default_font == NULL )
237 intf_ErrMsg( "vout error: could not load default font\n" );
238 p_vout->p_sys_destroy( p_vout );
242 p_vout->p_large_font = vout_LoadFont( DATA_PATH "/" VOUT_LARGE_FONT );
243 if( p_vout->p_large_font == NULL )
245 p_vout->p_large_font = vout_LoadFont( "share/" VOUT_LARGE_FONT );
247 if( p_vout->p_large_font == NULL )
249 intf_ErrMsg( "vout error: could not load large font\n" );
250 vout_UnloadFont( p_vout->p_default_font );
251 p_vout->p_sys_destroy( p_vout );
256 /* Create thread and set locks */
257 vlc_mutex_init( &p_vout->picture_lock );
258 vlc_mutex_init( &p_vout->subpicture_lock );
259 vlc_mutex_init( &p_vout->change_lock );
260 vlc_mutex_lock( &p_vout->change_lock );
261 if( vlc_thread_create( &p_vout->thread_id, "video output",
262 (void *) RunThread, (void *) p_vout) )
264 intf_ErrMsg("error: %s\n", strerror(ENOMEM));
265 vout_UnloadFont( p_vout->p_default_font );
266 vout_UnloadFont( p_vout->p_large_font );
267 p_vout->p_sys_destroy( p_vout );
272 intf_Msg( "Video display initialized (%dx%d, %d/%d bpp)\n", p_vout->i_width,
273 p_vout->i_height, p_vout->i_screen_depth,
274 p_vout->i_bytes_per_pixel * 8 );
276 /* If status is NULL, wait until the thread is created */
277 if( pi_status == NULL )
281 msleep( THREAD_SLEEP );
282 }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
283 && (i_status != THREAD_FATAL) );
284 if( i_status != THREAD_READY )
292 /*****************************************************************************
293 * vout_DestroyThread: destroys a previously created thread
294 *****************************************************************************
295 * Destroy a terminated thread.
296 * The function will request a destruction of the specified thread. If pi_error
297 * is NULL, it will return once the thread is destroyed. Else, it will be
298 * update using one of the THREAD_* constants.
299 *****************************************************************************/
300 void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
302 int i_status; /* thread status */
306 p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
307 *p_vout->pi_status = THREAD_DESTROY;
309 /* Request thread destruction */
312 /* If status is NULL, wait until thread has been destroyed */
313 if( pi_status == NULL )
317 msleep( THREAD_SLEEP );
318 }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
319 && (i_status != THREAD_FATAL) );
323 /*****************************************************************************
324 * vout_DisplaySubPicture: display a subpicture unit
325 *****************************************************************************
326 * Remove the reservation flag of an subpicture, which will cause it to be ready
327 * for display. The picture does not need to be locked, since it is ignored by
328 * the output thread if is reserved.
329 *****************************************************************************/
330 void vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
333 char psz_begin_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */
334 char psz_end_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */
338 /* Check if status is valid */
339 if( p_subpic->i_status != RESERVED_SUBPICTURE )
341 intf_DbgMsg("error: subpicture %p has invalid status %d\n", p_subpic,
342 p_subpic->i_status );
346 /* Remove reservation flag */
347 p_subpic->i_status = READY_SUBPICTURE;
350 /* Send subpicture information */
351 intf_DbgMsg("subpicture %p: type=%d, begin date=%s, end date=%s\n",
352 p_subpic, p_subpic->i_type,
353 mstrtime( psz_begin_date, p_subpic->begin_date ),
354 mstrtime( psz_end_date, p_subpic->end_date ) );
358 /*****************************************************************************
359 * vout_CreateSubPicture: allocate a subpicture in the video output heap.
360 *****************************************************************************
361 * This function create a reserved subpicture in the video output heap.
362 * A null pointer is returned if the function fails. This method provides an
363 * already allocated zone of memory in the spu data fields. It needs locking
364 * since several pictures can be created by several producers threads.
365 *****************************************************************************/
366 subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type,
369 int i_subpic; /* subpicture index */
370 subpicture_t * p_free_subpic = NULL; /* first free subpicture */
371 subpicture_t * p_destroyed_subpic = NULL; /* first destroyed subpic */
374 vlc_mutex_lock( &p_vout->subpicture_lock );
377 * Look for an empty place
379 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
381 if( p_vout->p_subpicture[i_subpic].i_status == DESTROYED_SUBPICTURE )
383 /* Subpicture is marked for destruction, but is still allocated */
384 if( (p_vout->p_subpicture[i_subpic].i_type == i_type) &&
385 (p_vout->p_subpicture[i_subpic].i_size >= i_size) )
387 /* Memory size do match or is smaller : memory will not be
388 * reallocated, and function can end immediately - this is
389 * the best possible case, since no memory allocation needs
391 p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
393 intf_DbgMsg("subpicture %p (in destroyed subpicture slot)\n",
394 &p_vout->p_subpicture[i_subpic] );
396 vlc_mutex_unlock( &p_vout->subpicture_lock );
397 return( &p_vout->p_subpicture[i_subpic] );
399 else if( p_destroyed_subpic == NULL )
401 /* Memory size do not match, but subpicture index will be kept in
402 * case no other place are left */
403 p_destroyed_subpic = &p_vout->p_subpicture[i_subpic];
406 else if( (p_free_subpic == NULL) &&
407 (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE ))
409 /* Subpicture is empty and ready for allocation */
410 p_free_subpic = &p_vout->p_subpicture[i_subpic];
414 /* If no free subpictures are available, use a destroyed subpicture */
415 if( (p_free_subpic == NULL) && (p_destroyed_subpic != NULL ) )
417 /* No free subpicture or matching destroyed subpictures have been
418 * found, but a destroyed subpicture is still avalaible */
419 free( p_destroyed_subpic->p_data );
420 p_free_subpic = p_destroyed_subpic;
426 if( p_free_subpic != NULL )
428 /* Allocate memory */
431 case TEXT_SUBPICTURE: /* text subpicture */
432 p_free_subpic->p_data = malloc( i_size + 1 );
434 case DVD_SUBPICTURE: /* DVD subpicture unit */
435 p_free_subpic->p_data = malloc( i_size );
439 intf_DbgMsg("error: unknown subpicture type %d\n", i_type );
440 p_free_subpic->p_data = NULL;
445 if( p_free_subpic->p_data != NULL )
447 /* Copy subpicture information, set some default values */
448 p_free_subpic->i_type = i_type;
449 p_free_subpic->i_status = RESERVED_SUBPICTURE;
450 p_free_subpic->i_size = i_size;
451 p_free_subpic->i_x = 0;
452 p_free_subpic->i_y = 0;
453 p_free_subpic->i_width = 0;
454 p_free_subpic->i_height = 0;
455 p_free_subpic->i_horizontal_align = CENTER_RALIGN;
456 p_free_subpic->i_vertical_align = CENTER_RALIGN;
460 /* Memory allocation failed : set subpicture as empty */
461 p_free_subpic->i_type = EMPTY_SUBPICTURE;
462 p_free_subpic->i_status = FREE_SUBPICTURE;
463 p_free_subpic = NULL;
464 intf_ErrMsg("spu warning: %s\n", strerror( ENOMEM ) );
468 intf_DbgMsg("subpicture %p (in free subpicture slot)\n", p_free_subpic );
470 vlc_mutex_unlock( &p_vout->subpicture_lock );
471 return( p_free_subpic );
474 /* No free or destroyed subpicture could be found */
475 intf_DbgMsg( "warning: subpicture heap is full\n" );
476 vlc_mutex_unlock( &p_vout->subpicture_lock );
480 /*****************************************************************************
481 * vout_DestroySubPicture: remove a subpicture from the heap
482 *****************************************************************************
483 * This function frees a previously reserved subpicture.
484 * It is meant to be used when the construction of a picture aborted.
485 * This function does not need locking since reserved subpictures are ignored
486 * by the output thread.
487 *****************************************************************************/
488 void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
491 /* Check if status is valid */
492 if( p_subpic->i_status != RESERVED_SUBPICTURE )
494 intf_DbgMsg("error: subpicture %p has invalid status %d\n",
495 p_subpic, p_subpic->i_status );
499 p_subpic->i_status = DESTROYED_SUBPICTURE;
502 intf_DbgMsg("subpicture %p\n", p_subpic);
506 /*****************************************************************************
507 * vout_DisplayPicture: display a picture
508 *****************************************************************************
509 * Remove the reservation flag of a picture, which will cause it to be ready for
510 * display. The picture won't be displayed until vout_DatePicture has been
512 *****************************************************************************/
513 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
515 vlc_mutex_lock( &p_vout->picture_lock );
516 switch( p_pic->i_status )
518 case RESERVED_PICTURE:
519 p_pic->i_status = RESERVED_DISP_PICTURE;
521 case RESERVED_DATED_PICTURE:
522 p_pic->i_status = READY_PICTURE;
526 intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
532 intf_DbgMsg("picture %p\n", p_pic);
534 vlc_mutex_unlock( &p_vout->picture_lock );
537 /*****************************************************************************
538 * vout_DatePicture: date a picture
539 *****************************************************************************
540 * Remove the reservation flag of a picture, which will cause it to be ready for
541 * display. The picture won't be displayed until vout_DisplayPicture has been
543 *****************************************************************************/
544 void vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date )
547 char psz_date[MSTRTIME_MAX_SIZE]; /* date */
550 vlc_mutex_lock( &p_vout->picture_lock );
552 switch( p_pic->i_status )
554 case RESERVED_PICTURE:
555 p_pic->i_status = RESERVED_DATED_PICTURE;
557 case RESERVED_DISP_PICTURE:
558 p_pic->i_status = READY_PICTURE;
562 intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
568 intf_DbgMsg("picture %p, display date: %s\n", p_pic, mstrtime( psz_date, p_pic->date) );
570 vlc_mutex_unlock( &p_vout->picture_lock );
573 /*****************************************************************************
574 * vout_CreatePicture: allocate a picture in the video output heap.
575 *****************************************************************************
576 * This function create a reserved image in the video output heap.
577 * A null pointer is returned if the function fails. This method provides an
578 * already allocated zone of memory in the picture data fields. It needs locking
579 * since several pictures can be created by several producers threads.
580 *****************************************************************************/
581 picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type,
582 int i_width, int i_height )
584 int i_picture; /* picture index */
585 int i_chroma_width = 0; /* chroma width */
586 picture_t * p_free_picture = NULL; /* first free picture */
587 picture_t * p_destroyed_picture = NULL; /* first destroyed picture */
590 vlc_mutex_lock( &p_vout->picture_lock );
593 * Look for an empty place
595 for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
597 if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
599 /* Picture is marked for destruction, but is still allocated - note
600 * that if width and type are the same for two pictures, chroma_width
601 * should also be the same */
602 if( (p_vout->p_picture[i_picture].i_type == i_type) &&
603 (p_vout->p_picture[i_picture].i_height == i_height) &&
604 (p_vout->p_picture[i_picture].i_width == i_width) )
606 /* Memory size do match : memory will not be reallocated, and function
607 * can end immediately - this is the best possible case, since no
608 * memory allocation needs to be done */
609 p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
610 p_vout->i_pictures++;
612 intf_DbgMsg("picture %p (in destroyed picture slot)\n",
613 &p_vout->p_picture[i_picture] );
615 vlc_mutex_unlock( &p_vout->picture_lock );
616 return( &p_vout->p_picture[i_picture] );
618 else if( p_destroyed_picture == NULL )
620 /* Memory size do not match, but picture index will be kept in
621 * case no other place are left */
622 p_destroyed_picture = &p_vout->p_picture[i_picture];
625 else if( (p_free_picture == NULL) &&
626 (p_vout->p_picture[i_picture].i_status == FREE_PICTURE ))
628 /* Picture is empty and ready for allocation */
629 p_free_picture = &p_vout->p_picture[i_picture];
633 /* If no free picture is available, use a destroyed picture */
634 if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) )
636 /* No free picture or matching destroyed picture has been found, but
637 * a destroyed picture is still avalaible */
638 free( p_destroyed_picture->p_data );
639 p_free_picture = p_destroyed_picture;
645 if( p_free_picture != NULL )
647 /* Allocate memory */
650 case YUV_420_PICTURE: /* YUV 420: 1,1/4,1/4 samples per pixel */
651 i_chroma_width = i_width / 2;
652 p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
653 p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
654 p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*4/2;
655 p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*5/2;
657 case YUV_422_PICTURE: /* YUV 422: 1,1/2,1/2 samples per pixel */
658 i_chroma_width = i_width / 2;
659 p_free_picture->p_data = malloc( i_height * i_chroma_width * 4 * sizeof( yuv_data_t ) );
660 p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
661 p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
662 p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*3;
664 case YUV_444_PICTURE: /* YUV 444: 1,1,1 samples per pixel */
665 i_chroma_width = i_width;
666 p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
667 p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
668 p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width;
669 p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
673 intf_DbgMsg("error: unknown picture type %d\n", i_type );
674 p_free_picture->p_data = NULL;
679 if( p_free_picture->p_data != NULL )
681 /* Copy picture information, set some default values */
682 p_free_picture->i_type = i_type;
683 p_free_picture->i_status = RESERVED_PICTURE;
684 p_free_picture->i_matrix_coefficients = 1;
685 p_free_picture->i_width = i_width;
686 p_free_picture->i_height = i_height;
687 p_free_picture->i_chroma_width = i_chroma_width;
688 p_free_picture->i_display_horizontal_offset = 0;
689 p_free_picture->i_display_vertical_offset = 0;
690 p_free_picture->i_display_width = i_width;
691 p_free_picture->i_display_height = i_height;
692 p_free_picture->i_aspect_ratio = AR_SQUARE_PICTURE;
693 p_free_picture->i_refcount = 0;
694 p_vout->i_pictures++;
698 /* Memory allocation failed : set picture as empty */
699 p_free_picture->i_type = EMPTY_PICTURE;
700 p_free_picture->i_status = FREE_PICTURE;
701 p_free_picture = NULL;
702 intf_ErrMsg("vout warning: %s\n", strerror( ENOMEM ) );
706 intf_DbgMsg("picture %p (in free picture slot)\n", p_free_picture );
708 vlc_mutex_unlock( &p_vout->picture_lock );
709 return( p_free_picture );
712 /* No free or destroyed picture could be found */
713 intf_DbgMsg( "warning: picture heap is full\n" );
714 vlc_mutex_unlock( &p_vout->picture_lock );
718 /*****************************************************************************
719 * vout_DestroyPicture: remove a permanent or reserved picture from the heap
720 *****************************************************************************
721 * This function frees a previously reserved picture or a permanent
722 * picture. It is meant to be used when the construction of a picture aborted.
723 * Note that the picture will be destroyed even if it is linked !
724 *****************************************************************************/
725 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
727 vlc_mutex_lock( &p_vout->picture_lock );
730 /* Check if picture status is valid */
731 if( (p_pic->i_status != RESERVED_PICTURE) &&
732 (p_pic->i_status != RESERVED_DATED_PICTURE) &&
733 (p_pic->i_status != RESERVED_DISP_PICTURE) )
735 intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
739 p_pic->i_status = DESTROYED_PICTURE;
740 p_vout->i_pictures--;
743 intf_DbgMsg("picture %p\n", p_pic);
745 vlc_mutex_unlock( &p_vout->picture_lock );
748 /*****************************************************************************
749 * vout_LinkPicture: increment reference counter of a picture
750 *****************************************************************************
751 * This function increment the reference counter of a picture in the video
752 * heap. It needs a lock since several producer threads can access the picture.
753 *****************************************************************************/
754 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
756 vlc_mutex_lock( &p_vout->picture_lock );
760 intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
763 vlc_mutex_unlock( &p_vout->picture_lock );
766 /*****************************************************************************
767 * vout_UnlinkPicture: decrement reference counter of a picture
768 *****************************************************************************
769 * This function decrement the reference counter of a picture in the video heap.
770 *****************************************************************************/
771 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
773 vlc_mutex_lock( &p_vout->picture_lock );
777 if( p_pic->i_refcount < 0 )
779 intf_DbgMsg("error: refcount < 0\n");
780 p_pic->i_refcount = 0;
784 if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
786 p_pic->i_status = DESTROYED_PICTURE;
787 p_vout->i_pictures--;
791 intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
794 vlc_mutex_unlock( &p_vout->picture_lock );
797 /*****************************************************************************
798 * vout_SetBuffers: set buffers adresses
799 *****************************************************************************
800 * This function is called by system drivers to set buffers video memory
802 *****************************************************************************/
803 void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 )
805 /* No picture previously */
806 p_vout->p_buffer[0].i_pic_x = 0;
807 p_vout->p_buffer[0].i_pic_y = 0;
808 p_vout->p_buffer[0].i_pic_width = 0;
809 p_vout->p_buffer[0].i_pic_height = 0;
810 p_vout->p_buffer[1].i_pic_x = 0;
811 p_vout->p_buffer[1].i_pic_y = 0;
812 p_vout->p_buffer[1].i_pic_width = 0;
813 p_vout->p_buffer[1].i_pic_height = 0;
815 /* The first area covers all the screen */
816 p_vout->p_buffer[0].i_areas = 1;
817 p_vout->p_buffer[0].pi_area_begin[0] = 0;
818 p_vout->p_buffer[0].pi_area_end[0] = p_vout->i_height - 1;
819 p_vout->p_buffer[1].i_areas = 1;
820 p_vout->p_buffer[1].pi_area_begin[0] = 0;
821 p_vout->p_buffer[1].pi_area_end[0] = p_vout->i_height - 1;
824 p_vout->p_buffer[0].p_data = p_buf1;
825 p_vout->p_buffer[1].p_data = p_buf2;
828 /*****************************************************************************
829 * vout_Pixel2RGB: return red, green and blue from pixel value
830 *****************************************************************************
831 * Return color values, in 0-255 range, of the decomposition of a pixel. This
832 * is a slow routine and should only be used for initialization phase.
833 *****************************************************************************/
834 void vout_Pixel2RGB( vout_thread_t *p_vout, u32 i_pixel, int *pi_red, int *pi_green, int *pi_blue )
836 *pi_red = i_pixel & p_vout->i_red_mask;
837 *pi_green = i_pixel & p_vout->i_green_mask;
838 *pi_blue = i_pixel & p_vout->i_blue_mask;
841 /* following functions are local */
843 /*****************************************************************************
844 * BinaryLog: computes the base 2 log of a binary value
845 *****************************************************************************
846 * This functions is used by MaskToShift, to get a bit index from a binary
848 *****************************************************************************/
849 static int BinaryLog(u32 i)
874 if (i != ((u32)1 << i_log))
876 intf_DbgMsg("internal error: binary log overflow\n");
882 /*****************************************************************************
883 * MaskToShift: transform a color mask into right and left shifts
884 *****************************************************************************
885 * This function is used for obtaining color shifts from masks.
886 *****************************************************************************/
887 static void MaskToShift( int *pi_left, int *pi_right, u32 i_mask )
889 u32 i_low, i_high; /* lower hand higher bits of the mask */
892 i_low = i_mask & (- i_mask); /* lower bit of the mask */
893 i_high = i_mask + i_low; /* higher bit of the mask */
895 /* Transform bits into an index */
896 i_low = BinaryLog (i_low);
897 i_high = BinaryLog (i_high);
899 /* Update pointers and return */
901 *pi_right = (8 - i_high + i_low);
904 /*****************************************************************************
905 * InitThread: initialize video output thread
906 *****************************************************************************
907 * This function is called from RunThread and performs the second step of the
908 * initialization. It returns 0 on success. Note that the thread's flag are not
909 * modified inside this function.
910 *****************************************************************************/
911 static int InitThread( vout_thread_t *p_vout )
915 *p_vout->pi_status = THREAD_START;
917 /* Initialize output method - this function issues its own error messages */
918 if( p_vout->p_sys_init( p_vout ) )
923 /* Initialize convertion tables and functions */
924 if( vout_InitYUV( p_vout ) )
926 intf_ErrMsg("error: can't allocate YUV translation tables\n");
930 /* Mark thread as running and return */
931 p_vout->b_active = 1;
932 *p_vout->pi_status = THREAD_READY;
933 intf_DbgMsg("thread ready\n");
937 /*****************************************************************************
938 * RunThread: video output thread
939 *****************************************************************************
940 * Video output thread. This function does only returns when the thread is
941 * terminated. It handles the pictures arriving in the video heap and the
942 * display device events.
943 *****************************************************************************/
944 static void RunThread( vout_thread_t *p_vout)
946 /* XXX?? welcome to gore land */
947 static int i_trash_count = 0;
948 static mtime_t last_display_date = 0;
950 int i_index; /* index in heap */
951 mtime_t current_date; /* current date */
952 mtime_t display_date; /* display date */
953 boolean_t b_display; /* display flag */
954 picture_t * p_pic; /* picture pointer */
955 subpicture_t * p_subpic; /* subpicture pointer */
960 p_vout->b_error = InitThread( p_vout );
961 if( p_vout->b_error )
963 DestroyThread( p_vout, THREAD_ERROR );
969 * Main loop - it is not executed if an error occured during
972 while( (!p_vout->b_die) && (!p_vout->b_error) )
974 /* Initialize loop variables */
978 current_date = mdate();
981 * Find the picture to display - this operation does not need lock,
982 * since only READY_PICTUREs are handled
984 for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
986 if( (p_vout->p_picture[i_index].i_status == READY_PICTURE) &&
988 (p_vout->p_picture[i_index].date < display_date) ) )
990 p_pic = &p_vout->p_picture[i_index];
991 display_date = p_pic->date;
998 /* Computes FPS rate */
999 p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date;
1003 //fprintf( stderr, "gap : %Ld\n", display_date-last_display_date );
1004 last_display_date = display_date;
1006 if( display_date < current_date && i_trash_count > 4 )
1008 /* Picture is late: it will be destroyed and the thread
1009 * will sleep and go to next picture */
1011 vlc_mutex_lock( &p_vout->picture_lock );
1012 if( p_pic->i_refcount )
1014 p_pic->i_status = DISPLAYED_PICTURE;
1018 p_pic->i_status = DESTROYED_PICTURE;
1019 p_vout->i_pictures--;
1021 intf_DbgMsg( "warning: late picture %p skipped refcount=%d\n", p_pic, p_pic->i_refcount );
1022 vlc_mutex_unlock( &p_vout->picture_lock );
1024 /* Update synchronization information as if display delay
1026 Synchronize( p_vout, display_date - current_date );
1034 if( display_date > current_date + VOUT_DISPLAY_DELAY )
1036 /* A picture is ready to be rendered, but its rendering date
1037 * is far from the current one so the thread will perform an
1038 * empty loop as if no picture were found. The picture state
1045 /* Picture will be displayed, update synchronization
1047 Synchronize( p_vout, display_date - current_date );
1051 * Find the subpictures to display - this operation does not need
1052 * lock, since only READY_SUBPICTURE are handled. If no picture
1053 * has been selected, display_date will depend on the subpicture.
1054 * We get an easily parsable chained list of subpictures which
1055 * ends with NULL since p_subpic was initialized to NULL.
1057 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1059 if( p_vout->p_subpicture[i_index].i_status == READY_SUBPICTURE )
1061 p_vout->p_subpicture[i_index].p_next = p_subpic;
1062 p_subpic = &p_vout->p_subpicture[i_index];
1067 * Perform rendering, sleep and display rendered picture
1069 if( p_pic ) /* picture and perhaps subpicture */
1071 b_display = p_vout->b_active;
1072 p_vout->last_display_date = display_date;
1076 /* Set picture dimensions and clear buffer */
1077 SetBufferPicture( p_vout, p_pic );
1079 /* Render picture and information */
1080 RenderPicture( p_vout, p_pic );
1081 if( p_vout->b_info )
1083 RenderPictureInfo( p_vout, p_pic );
1084 RenderInfo( p_vout );
1088 RenderSubPicture( p_vout, p_subpic );
1092 /* Remove picture from heap */
1093 vlc_mutex_lock( &p_vout->picture_lock );
1094 if( p_pic->i_refcount )
1096 p_pic->i_status = DISPLAYED_PICTURE;
1100 p_pic->i_status = DESTROYED_PICTURE;
1101 p_vout->i_pictures--;
1103 vlc_mutex_unlock( &p_vout->picture_lock );
1105 /* Render interface and subpicture */
1106 if( b_display && p_vout->b_interface )
1108 RenderInterface( p_vout );
1112 else if( p_vout->b_active ) /* idle or interface screen alone */
1114 if( p_vout->b_interface && 0 /* && XXX?? intf_change */ )
1116 /* Interface has changed, so a new rendering is required - force
1117 * it by setting last idle date to 0 */
1118 p_vout->last_idle_date = 0;
1121 /* Render idle screen and update idle date, then render interface if
1123 b_display = RenderIdle( p_vout );
1126 p_vout->last_idle_date = current_date;
1127 if( p_vout->b_interface )
1129 RenderInterface( p_vout );
1140 * Sleep, wake up and display rendered picture
1144 /* Store render time */
1145 p_vout->render_time = mdate() - current_date;
1148 /* Give back change lock */
1149 vlc_mutex_unlock( &p_vout->change_lock );
1151 /* Sleep a while or until a given date */
1152 if( display_date != 0 )
1154 mwait( display_date );
1158 msleep( VOUT_IDLE_SLEEP );
1161 /* On awakening, take back lock and send immediately picture to display,
1162 * then swap buffers */
1163 vlc_mutex_lock( &p_vout->change_lock );
1165 intf_DbgMsg( "picture %p, subpicture %p in buffer %d, display=%d\n", p_pic, p_subpic,
1166 p_vout->i_buffer_index, b_display && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) );
1168 if( b_display && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) )
1170 p_vout->p_sys_display( p_vout );
1172 p_vout->i_buffer_index = ++p_vout->i_buffer_index & 1;
1177 * Check events and manage thread
1179 if( p_vout->p_sys_manage( p_vout ) | Manage( p_vout ) )
1181 /* A fatal error occured, and the thread must terminate immediately,
1182 * without displaying anything - setting b_error to 1 cause the
1183 * immediate end of the main while() loop. */
1184 p_vout->b_error = 1;
1189 * Error loop - wait until the thread destruction is requested
1191 if( p_vout->b_error )
1193 ErrorThread( p_vout );
1197 EndThread( p_vout );
1198 DestroyThread( p_vout, THREAD_OVER );
1199 intf_DbgMsg( "thread end\n" );
1202 /*****************************************************************************
1203 * ErrorThread: RunThread() error loop
1204 *****************************************************************************
1205 * This function is called when an error occured during thread main's loop. The
1206 * thread can still receive feed, but must be ready to terminate as soon as
1208 *****************************************************************************/
1209 static void ErrorThread( vout_thread_t *p_vout )
1211 /* Wait until a `die' order */
1213 while( !p_vout->b_die )
1216 msleep( VOUT_IDLE_SLEEP );
1220 /*****************************************************************************
1221 * EndThread: thread destruction
1222 *****************************************************************************
1223 * This function is called when the thread ends after a sucessful
1224 * initialization. It frees all ressources allocated by InitThread.
1225 *****************************************************************************/
1226 static void EndThread( vout_thread_t *p_vout )
1228 int i_index; /* index in heap */
1232 *p_vout->pi_status = THREAD_END;
1234 /* Destroy all remaining pictures and subpictures */
1235 for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
1237 if( p_vout->p_picture[i_index].i_status != FREE_PICTURE )
1239 free( p_vout->p_picture[i_index].p_data );
1242 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1244 if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
1246 free( p_vout->p_subpicture[i_index].p_data );
1250 /* Destroy translation tables */
1251 vout_EndYUV( p_vout );
1252 p_vout->p_sys_end( p_vout );
1255 /*****************************************************************************
1256 * DestroyThread: thread destruction
1257 *****************************************************************************
1258 * This function is called when the thread ends. It frees all ressources
1259 * allocated by CreateThread. Status is available at this stage.
1260 *****************************************************************************/
1261 static void DestroyThread( vout_thread_t *p_vout, int i_status )
1263 int *pi_status; /* status adress */
1265 /* Store status adress */
1267 pi_status = p_vout->pi_status;
1269 /* Destroy thread structures allocated by Create and InitThread */
1270 vout_UnloadFont( p_vout->p_default_font );
1271 vout_UnloadFont( p_vout->p_large_font );
1272 p_vout->p_sys_destroy( p_vout );
1274 /* Free structure */
1276 *pi_status = i_status;
1279 /*****************************************************************************
1280 * Print: print simple text on a picture
1281 *****************************************************************************
1282 * This function will print a simple text on the picture. It is designed to
1283 * print debugging or general information.
1284 *****************************************************************************/
1285 void Print( vout_thread_t *p_vout, int i_x, int i_y, int i_h_align, int i_v_align, unsigned char *psz_text )
1287 int i_text_height; /* total text height */
1288 int i_text_width; /* total text width */
1290 /* Update upper left coordinates according to alignment */
1291 vout_TextSize( p_vout->p_default_font, 0, psz_text, &i_text_width, &i_text_height );
1292 if( !Align( p_vout, &i_x, &i_y, i_text_width, i_text_height, i_h_align, i_v_align ) )
1294 /* Set area and print text */
1295 SetBufferArea( p_vout, i_x, i_y, i_text_width, i_text_height );
1296 vout_Print( p_vout->p_default_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1297 i_y * p_vout->i_bytes_per_line + i_x * p_vout->i_bytes_per_pixel,
1298 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1299 p_vout->i_white_pixel, 0, 0,
1304 /*****************************************************************************
1305 * SetBufferArea: activate an area in current buffer
1306 *****************************************************************************
1307 * This function is called when something is rendered on the current buffer.
1308 * It set the area as active and prepare it to be cleared on next rendering.
1309 * Pay attention to the fact that in this functions, i_h is in fact the end y
1310 * coordinate of the new area.
1311 *****************************************************************************/
1312 static void SetBufferArea( vout_thread_t *p_vout, int i_x, int i_y, int i_w, int i_h )
1314 vout_buffer_t * p_buffer; /* current buffer */
1315 int i_area_begin, i_area_end; /* area vertical extension */
1316 int i_area, i_area_copy; /* area index */
1317 int i_area_shift; /* shift distance for areas */
1319 /* Choose buffer and modify h to end of area position */
1320 p_buffer = &p_vout->p_buffer[ p_vout->i_buffer_index ];
1324 * Remove part of the area which is inside the picture - this is done
1325 * by calling again SetBufferArea with the correct areas dimensions.
1327 if( (i_x >= p_buffer->i_pic_x) && (i_x + i_w <= p_buffer->i_pic_x + p_buffer->i_pic_width) )
1329 i_area_begin = p_buffer->i_pic_y;
1330 i_area_end = i_area_begin + p_buffer->i_pic_height - 1;
1332 if( ((i_y >= i_area_begin) && (i_y <= i_area_end)) ||
1333 ((i_h >= i_area_begin) && (i_h <= i_area_end)) ||
1334 ((i_y < i_area_begin) && (i_h > i_area_end)) )
1336 /* Keep the stripe above the picture, if any */
1337 if( i_y < i_area_begin )
1339 SetBufferArea( p_vout, i_x, i_y, i_w, i_area_begin - i_y );
1341 /* Keep the stripe below the picture, if any */
1342 if( i_h > i_area_end )
1344 SetBufferArea( p_vout, i_x, i_area_end, i_w, i_h - i_area_end );
1350 /* Skip some extensions until interesting areas */
1352 (i_area < p_buffer->i_areas) &&
1353 (p_buffer->pi_area_end[i_area] + 1 <= i_y);
1359 if( i_area == p_buffer->i_areas )
1361 /* New area is below all existing ones: just add it at the end of the
1362 * array, if possible - otherwise, append it to the last one */
1363 if( i_area < VOUT_MAX_AREAS )
1365 p_buffer->pi_area_begin[i_area] = i_y;
1366 p_buffer->pi_area_end[i_area] = i_h;
1367 p_buffer->i_areas++;
1372 intf_DbgMsg("area overflow\n");
1374 p_buffer->pi_area_end[VOUT_MAX_AREAS - 1] = i_h;
1379 i_area_begin = p_buffer->pi_area_begin[i_area];
1380 i_area_end = p_buffer->pi_area_end[i_area];
1382 if( i_y < i_area_begin )
1384 if( i_h >= i_area_begin - 1 )
1386 /* Extend area above */
1387 p_buffer->pi_area_begin[i_area] = i_y;
1391 /* Create a new area above : merge last area if overflow, then
1392 * move all old areas down */
1393 if( p_buffer->i_areas == VOUT_MAX_AREAS )
1396 intf_DbgMsg("areas overflow\n");
1398 p_buffer->pi_area_end[VOUT_MAX_AREAS - 2] = p_buffer->pi_area_end[VOUT_MAX_AREAS - 1];
1402 p_buffer->i_areas++;
1404 for( i_area_copy = p_buffer->i_areas - 1; i_area_copy > i_area; i_area_copy-- )
1406 p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy - 1];
1407 p_buffer->pi_area_end[i_area_copy] = p_buffer->pi_area_end[i_area_copy - 1];
1409 p_buffer->pi_area_begin[i_area] = i_y;
1410 p_buffer->pi_area_end[i_area] = i_h;
1414 if( i_h > i_area_end )
1416 /* Find further areas which can be merged with the new one */
1417 for( i_area_copy = i_area + 1;
1418 (i_area_copy < p_buffer->i_areas) &&
1419 (p_buffer->pi_area_begin[i_area] <= i_h);
1426 if( i_area_copy != i_area )
1428 /* Merge with last possible areas */
1429 p_buffer->pi_area_end[i_area] = MAX( i_h, p_buffer->pi_area_end[i_area_copy] );
1431 /* Shift lower areas upward */
1432 i_area_shift = i_area_copy - i_area;
1433 p_buffer->i_areas -= i_area_shift;
1434 for( i_area_copy = i_area + 1; i_area_copy < p_buffer->i_areas; i_area_copy++ )
1436 p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy + i_area_shift];
1437 p_buffer->pi_area_end[i_area_copy] = p_buffer->pi_area_end[i_area_copy + i_area_shift];
1442 /* Extend area below */
1443 p_buffer->pi_area_end[i_area] = i_h;
1449 /*****************************************************************************
1450 * SetBufferPicture: clear buffer and set picture area
1451 *****************************************************************************
1452 * This function is called before any rendering. It clears the current
1453 * rendering buffer and set the new picture area. If the picture pointer is
1454 * NULL, then no picture area is defined. Floating operations are avoided since
1455 * some MMX calculations may follow.
1456 *****************************************************************************/
1457 static void SetBufferPicture( vout_thread_t *p_vout, picture_t *p_pic )
1459 vout_buffer_t * p_buffer; /* current buffer */
1460 int i_pic_x, i_pic_y; /* picture position */
1461 int i_pic_width, i_pic_height; /* picture dimensions */
1462 int i_old_pic_y, i_old_pic_height; /* old picture area */
1463 int i_vout_width, i_vout_height; /* display dimensions */
1464 int i_area; /* area index */
1465 int i_data_index; /* area data index */
1466 int i_data_size; /* area data size, in 256 bytes blocs */
1467 u64 * p_data; /* area data, for clearing */
1468 byte_t * p_data8; /* area data, for clearing (slow) */
1470 /* Choose buffer and set display dimensions */
1471 p_buffer = &p_vout->p_buffer[ p_vout->i_buffer_index ];
1472 i_vout_width = p_vout->i_width;
1473 i_vout_height = p_vout->i_height;
1476 * Computes new picture size
1480 /* Try horizontal scaling first - width must be a mutiple of 16 */
1481 i_pic_width = (( p_vout->b_scale || (p_pic->i_width > i_vout_width)) ?
1482 i_vout_width : p_pic->i_width) & ~0xf;
1483 switch( p_pic->i_aspect_ratio )
1485 case AR_3_4_PICTURE:
1486 i_pic_height = i_pic_width * 3 / 4;
1488 case AR_16_9_PICTURE:
1489 i_pic_height = i_pic_width * 9 / 16;
1491 case AR_221_1_PICTURE:
1492 i_pic_height = i_pic_width * 100 / 221;
1494 case AR_SQUARE_PICTURE:
1496 i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1500 /* If picture dimensions using horizontal scaling are too large, use
1501 * vertical scaling. Since width must be a multiple of 16, height is
1502 * adjusted again after. */
1503 if( i_pic_height > i_vout_height )
1505 i_pic_height = ( p_vout->b_scale || (p_pic->i_height > i_vout_height)) ?
1506 i_vout_height : p_pic->i_height;
1507 switch( p_pic->i_aspect_ratio )
1509 case AR_3_4_PICTURE:
1510 i_pic_width = (i_pic_height * 4 / 3) & ~0xf;
1511 i_pic_height = i_pic_width * 3 / 4;
1513 case AR_16_9_PICTURE:
1514 i_pic_width = (i_pic_height * 16 / 9) & ~0xf;
1515 i_pic_height = i_pic_width * 9 / 16;
1517 case AR_221_1_PICTURE:
1518 i_pic_width = (i_pic_height * 221 / 100) & ~0xf;
1519 i_pic_height = i_pic_width * 100 / 221;
1521 case AR_SQUARE_PICTURE:
1523 i_pic_width = (p_pic->i_width * i_pic_height / p_pic->i_height) & ~0xf;
1524 i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1529 /* Set picture position */
1530 i_pic_x = (p_vout->i_width - i_pic_width) / 2;
1531 i_pic_y = (p_vout->i_height - i_pic_height) / 2;
1535 /* No picture: size is 0 */
1543 * Set new picture size - if it is smaller than the previous one, clear
1544 * around it. Since picture are centered, only their size is tested.
1546 if( (p_buffer->i_pic_width > i_pic_width) || (p_buffer->i_pic_height > i_pic_height) )
1548 i_old_pic_y = p_buffer->i_pic_y;
1549 i_old_pic_height = p_buffer->i_pic_height;
1550 p_buffer->i_pic_x = i_pic_x;
1551 p_buffer->i_pic_y = i_pic_y;
1552 p_buffer->i_pic_width = i_pic_width;
1553 p_buffer->i_pic_height = i_pic_height;
1554 SetBufferArea( p_vout, 0, i_old_pic_y, p_vout->i_width, i_old_pic_height );
1558 p_buffer->i_pic_x = i_pic_x;
1559 p_buffer->i_pic_y = i_pic_y;
1560 p_buffer->i_pic_width = i_pic_width;
1561 p_buffer->i_pic_height = i_pic_height;
1567 for( i_area = 0; i_area < p_buffer->i_areas; i_area++ )
1570 intf_DbgMsg("clearing picture %p area in buffer %d: %d-%d\n", p_pic,
1571 p_vout->i_buffer_index, p_buffer->pi_area_begin[i_area], p_buffer->pi_area_end[i_area] );
1573 i_data_size = (p_buffer->pi_area_end[i_area] - p_buffer->pi_area_begin[i_area] + 1) * p_vout->i_bytes_per_line;
1574 p_data = (u64*) (p_buffer->p_data + p_vout->i_bytes_per_line * p_buffer->pi_area_begin[i_area]);
1575 for( i_data_index = i_data_size / 256; i_data_index-- ; )
1577 /* Clear 256 bytes block */
1578 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1579 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1580 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1581 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1582 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1583 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1584 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1585 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1587 for( i_data_index = (i_data_size % 256) / 16; i_data_index--; )
1589 /* Clear remaining 16 bytes blocks */
1590 *p_data++ = 0; *p_data++ = 0;
1592 p_data8 = (byte_t *)p_data;
1593 for( i_data_index = i_data_size % 16; i_data_index--; )
1595 /* Clear remaining bytes */
1603 p_buffer->i_areas = 0;
1606 /*****************************************************************************
1607 * RenderPicture: render a picture
1608 *****************************************************************************
1609 * This function converts a picture from a video heap to a pixel-encoded image
1610 * and copies it to the current rendering buffer. No lock is required, since
1611 * the * rendered picture has been determined as existant, and will only be
1612 * destroyed by the vout thread later.
1613 *****************************************************************************/
1614 static void RenderPicture( vout_thread_t *p_vout, picture_t *p_pic )
1617 char psz_date[MSTRTIME_MAX_SIZE]; /* picture date */
1618 mtime_t render_time; /* picture rendering time */
1620 vout_buffer_t * p_buffer; /* rendering buffer */
1621 byte_t * p_pic_data; /* convertion destination */
1623 /* Get and set rendering information */
1624 p_buffer = &p_vout->p_buffer[ p_vout->i_buffer_index ];
1625 p_pic_data = p_buffer->p_data +
1626 p_buffer->i_pic_x * p_vout->i_bytes_per_pixel +
1627 p_buffer->i_pic_y * p_vout->i_bytes_per_line;
1629 render_time = mdate();
1633 * Choose appropriate rendering function and render picture
1635 switch( p_pic->i_type )
1637 case YUV_420_PICTURE:
1638 p_vout->yuv.p_Convert420( p_vout, p_pic_data,
1639 p_pic->p_y, p_pic->p_u, p_pic->p_v,
1640 p_pic->i_width, p_pic->i_height,
1641 p_buffer->i_pic_width, p_buffer->i_pic_height,
1642 p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1643 p_pic->i_matrix_coefficients );
1645 case YUV_422_PICTURE:
1646 p_vout->yuv.p_Convert422( p_vout, p_pic_data,
1647 p_pic->p_y, p_pic->p_u, p_pic->p_v,
1648 p_pic->i_width, p_pic->i_height,
1649 p_buffer->i_pic_width, p_buffer->i_pic_height,
1650 p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1651 p_pic->i_matrix_coefficients );
1653 case YUV_444_PICTURE:
1654 p_vout->yuv.p_Convert444( p_vout, p_pic_data,
1655 p_pic->p_y, p_pic->p_u, p_pic->p_v,
1656 p_pic->i_width, p_pic->i_height,
1657 p_buffer->i_pic_width, p_buffer->i_pic_height,
1658 p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1659 p_pic->i_matrix_coefficients );
1663 intf_DbgMsg("error: unknown picture type %d\n", p_pic->i_type );
1669 /* Print picture date and rendering time */
1670 intf_DbgMsg("picture %p rendered in buffer %d (%ld us), display date: %s\n", p_pic,
1671 p_vout->i_buffer_index, (long) (mdate() - render_time),
1672 mstrtime( psz_date, p_pic->date ));
1676 /*****************************************************************************
1677 * RenderPictureInfo: print additionnal information on a picture
1678 *****************************************************************************
1679 * This function will print information such as fps and other picture
1680 * dependant information.
1681 *****************************************************************************/
1682 static void RenderPictureInfo( vout_thread_t *p_vout, picture_t *p_pic )
1684 #if defined(STATS) || defined(DEBUG)
1685 char psz_buffer[256]; /* string buffer */
1690 * Print FPS rate in upper right corner
1692 if( p_vout->c_fps_samples > VOUT_FPS_SAMPLES )
1694 sprintf( psz_buffer, "%.2f fps", (double) VOUT_FPS_SAMPLES * 1000000 /
1695 ( p_vout->p_fps_sample[ (p_vout->c_fps_samples - 1) % VOUT_FPS_SAMPLES ] -
1696 p_vout->p_fps_sample[ p_vout->c_fps_samples % VOUT_FPS_SAMPLES ] ) );
1697 Print( p_vout, 0, 0, RIGHT_RALIGN, TOP_RALIGN, psz_buffer );
1701 * Print frames count and loop time in upper left corner
1703 sprintf( psz_buffer, "%ld frames rendering: %ld us",
1704 (long) p_vout->c_fps_samples, (long) p_vout->render_time );
1705 Print( p_vout, 0, 0, LEFT_RALIGN, TOP_RALIGN, psz_buffer );
1710 * Print picture information in lower right corner
1712 sprintf( psz_buffer, "%s picture %dx%d (%dx%d%+d%+d %s) -> %dx%d+%d+%d",
1713 (p_pic->i_type == YUV_420_PICTURE) ? "4:2:0" :
1714 ((p_pic->i_type == YUV_422_PICTURE) ? "4:2:2" :
1715 ((p_pic->i_type == YUV_444_PICTURE) ? "4:4:4" : "ukn-type")),
1716 p_pic->i_width, p_pic->i_height,
1717 p_pic->i_display_width, p_pic->i_display_height,
1718 p_pic->i_display_horizontal_offset, p_pic->i_display_vertical_offset,
1719 (p_pic->i_aspect_ratio == AR_SQUARE_PICTURE) ? "sq" :
1720 ((p_pic->i_aspect_ratio == AR_3_4_PICTURE) ? "4:3" :
1721 ((p_pic->i_aspect_ratio == AR_16_9_PICTURE) ? "16:9" :
1722 ((p_pic->i_aspect_ratio == AR_221_1_PICTURE) ? "2.21:1" : "ukn-ar" ))),
1723 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_width,
1724 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height,
1725 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_x,
1726 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y );
1727 Print( p_vout, 0, 0, RIGHT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1731 /*****************************************************************************
1732 * RenderIdle: render idle picture
1733 *****************************************************************************
1734 * This function will print something on the screen. It will return 0 if
1735 * nothing has been rendered, or 1 if something has been changed on the screen.
1736 * Note that if you absolutely want something to be printed, you will have
1737 * to force it by setting the last idle date to 0.
1738 * Unlike other rendering functions, this one calls the SetBufferPicture
1739 * function when needed.
1740 *****************************************************************************/
1741 static int RenderIdle( vout_thread_t *p_vout )
1743 int i_x = 0, i_y = 0; /* text position */
1744 int i_width, i_height; /* text size */
1745 mtime_t current_date; /* current date */
1746 const char *psz_text = "waiting for stream ..."; /* text to display */
1749 current_date = mdate();
1750 if( (current_date - p_vout->last_display_date) > VOUT_IDLE_DELAY &&
1751 (current_date - p_vout->last_idle_date) > VOUT_IDLE_DELAY )
1753 SetBufferPicture( p_vout, NULL );
1754 vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1755 &i_width, &i_height );
1756 if( !Align( p_vout, &i_x, &i_y, i_width, i_height, CENTER_RALIGN, CENTER_RALIGN ) )
1758 vout_Print( p_vout->p_large_font,
1759 p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1760 i_x * p_vout->i_bytes_per_pixel + i_y * p_vout->i_bytes_per_line,
1761 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1762 p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1763 WIDE_TEXT | OUTLINED_TEXT, psz_text );
1764 SetBufferArea( p_vout, i_x, i_y, i_width, i_height );
1771 /*****************************************************************************
1772 * RenderInfo: render additionnal information
1773 *****************************************************************************
1774 * This function renders information which do not depend on the current
1776 *****************************************************************************/
1777 static void RenderInfo( vout_thread_t *p_vout )
1780 char psz_buffer[256]; /* string buffer */
1781 int i_ready_pic = 0; /* ready pictures */
1782 int i_reserved_pic = 0; /* reserved pictures */
1783 int i_picture; /* picture index */
1788 * Print thread state in lower left corner
1790 for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
1792 switch( p_vout->p_picture[i_picture].i_status )
1794 case RESERVED_PICTURE:
1795 case RESERVED_DATED_PICTURE:
1796 case RESERVED_DISP_PICTURE:
1804 sprintf( psz_buffer, "pic: %d (%d/%d)/%d",
1805 p_vout->i_pictures, i_reserved_pic, i_ready_pic, VOUT_MAX_PICTURES );
1806 Print( p_vout, 0, 0, LEFT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1810 /*****************************************************************************
1811 * RenderSubPicture: render a subpicture
1812 *****************************************************************************
1813 * This function renders a sub picture unit.
1814 *****************************************************************************/
1815 static void RenderSubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
1817 p_vout_font_t p_font; /* text font */
1818 int i_width, i_height; /* subpicture dimensions */
1820 while( p_subpic != NULL )
1822 switch( p_subpic->i_type )
1824 case DVD_SUBPICTURE: /* DVD subpicture unit */
1825 /* test if the picture really has to be displayed */
1826 if( mdate() < p_subpic->begin_date )
1828 /* not yet, see you later */
1831 if( mdate() > p_subpic->end_date )
1833 /* too late, destroying the subpic */
1834 vout_DestroySubPicture( p_vout, p_subpic );
1837 vout_RenderSPU( &p_vout->p_buffer[ p_vout->i_buffer_index ],
1838 p_subpic, p_vout->i_bytes_per_pixel,
1839 p_vout->i_bytes_per_line );
1841 case TEXT_SUBPICTURE: /* single line text */
1842 /* Select default font if not specified */
1843 p_font = p_subpic->type.text.p_font;
1844 if( p_font == NULL )
1846 p_font = p_vout->p_default_font;
1849 /* Compute text size (width and height fields are ignored)
1851 vout_TextSize( p_font, p_subpic->type.text.i_style,
1852 p_subpic->p_data, &i_width, &i_height );
1853 if( !Align( p_vout, &p_subpic->i_x, &p_subpic->i_y,
1854 i_width, i_height, p_subpic->i_horizontal_align,
1855 p_subpic->i_vertical_align ) )
1858 p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1859 p_subpic->i_x * p_vout->i_bytes_per_pixel +
1860 p_subpic->i_y * p_vout->i_bytes_per_line,
1861 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1862 p_subpic->type.text.i_char_color,
1863 p_subpic->type.text.i_border_color,
1864 p_subpic->type.text.i_bg_color,
1865 p_subpic->type.text.i_style, p_subpic->p_data );
1866 SetBufferArea( p_vout, p_subpic->i_x, p_subpic->i_y,
1867 i_width, i_height );
1873 intf_DbgMsg( "error: unknown subpicture %p type %d\n",
1874 p_subpic, p_subpic->i_type );
1878 p_subpic = p_subpic->p_next;
1882 /*****************************************************************************
1883 * RenderInterface: render the interface
1884 *****************************************************************************
1885 * This function renders the interface, if any.
1886 *****************************************************************************/
1887 static void RenderInterface( vout_thread_t *p_vout )
1889 int i_height, i_text_height; /* total and text height */
1890 int i_width_1, i_width_2; /* text width */
1891 int i_byte; /* byte index */
1892 const char *psz_text_1 = "[1-9] Channel [i]nfo [c]olor [g/G]amma";
1893 const char *psz_text_2 = "[+/-] Volume [m]ute [s]caling [Q]uit";
1896 vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_1, &i_width_1, &i_height );
1897 vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_2, &i_width_2, &i_text_height );
1898 i_height += i_text_height;
1900 /* Render background */
1901 for( i_byte = (p_vout->i_height - i_height) * p_vout->i_bytes_per_line;
1902 i_byte < p_vout->i_height * p_vout->i_bytes_per_line;
1906 p_vout->p_buffer[ p_vout->i_buffer_index ].p_data[ i_byte ] = p_vout->i_blue_pixel;
1909 /* Render text, if not larger than screen */
1910 if( i_width_1 < p_vout->i_width )
1912 vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1913 (p_vout->i_height - i_height) * p_vout->i_bytes_per_line,
1914 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1915 p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
1916 OUTLINED_TEXT, psz_text_1 );
1918 if( i_width_2 < p_vout->i_width )
1920 vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1921 (p_vout->i_height - i_height + i_text_height) * p_vout->i_bytes_per_line,
1922 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1923 p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
1924 OUTLINED_TEXT, psz_text_2 );
1927 /* Activate modified area */
1928 SetBufferArea( p_vout, 0, p_vout->i_height - i_height, p_vout->i_width, i_height );
1931 /*****************************************************************************
1932 * Synchronize: update synchro level depending of heap state
1933 *****************************************************************************
1934 * This function is called during the main vout loop.
1935 *****************************************************************************/
1936 static void Synchronize( vout_thread_t *p_vout, s64 i_delay )
1938 int i_synchro_inc = 0;
1939 /* XXX?? gore following */
1940 static int i_panic_count = 0;
1941 static int i_last_synchro_inc = 0;
1942 static float r_synchro_level = VOUT_SYNCHRO_LEVEL_START;
1943 static int i_truc = 10;
1947 //fprintf( stderr, "PANIC %d\n", i_panic_count );
1953 if( p_vout->i_pictures > VOUT_SYNCHRO_HEAP_IDEAL_SIZE+1 )
1956 i_synchro_inc += p_vout->i_pictures - VOUT_SYNCHRO_HEAP_IDEAL_SIZE - 1;
1961 if( p_vout->i_pictures < VOUT_SYNCHRO_HEAP_IDEAL_SIZE )
1964 i_synchro_inc += p_vout->i_pictures - VOUT_SYNCHRO_HEAP_IDEAL_SIZE;
1968 if( i_truc > VOUT_SYNCHRO_LEVEL_MAX*2*2*2*2*2 ||
1969 i_synchro_inc*i_last_synchro_inc < 0 )
1974 if( i_delay < 6000 )
1979 else if( i_delay < 70000 )
1981 i_truc = 24+(24*i_delay)/70000;
1984 i_synchro_inc -= 1+(5*(70000-i_delay))/70000;
1986 else if( i_delay > 100000 )
1988 r_synchro_level += 1;
1989 if( i_delay > 130000 )
1990 r_synchro_level += 1;
1993 r_synchro_level += (float)i_synchro_inc / i_truc;
1994 p_vout->i_synchro_level = (int)(r_synchro_level+0.5);
1996 if( r_synchro_level > VOUT_SYNCHRO_LEVEL_MAX )
1998 r_synchro_level = VOUT_SYNCHRO_LEVEL_MAX;
2001 //fprintf( stderr, "synchro level : %d, heap : %d (%d, %d) (%d, %f) - %Ld\n", p_vout->i_synchro_level,
2002 // p_vout->i_pictures, i_last_synchro_inc, i_synchro_inc, i_truc, r_synchro_level, i_delay );
2003 i_last_synchro_inc = i_synchro_inc;
2006 /*****************************************************************************
2007 * Manage: manage thread
2008 *****************************************************************************
2009 * This function will handle changes in thread configuration.
2010 *****************************************************************************/
2011 static int Manage( vout_thread_t *p_vout )
2014 if( p_vout->i_changes )
2016 intf_DbgMsg("changes: 0x%x (no display: 0x%x)\n", p_vout->i_changes,
2017 p_vout->i_changes & VOUT_NODISPLAY_CHANGE );
2021 /* On gamma or grayscale change, rebuild tables */
2022 if( p_vout->i_changes & (VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2025 if( vout_ResetYUV( p_vout ) )
2027 intf_ErrMsg("error: can't rebuild convertion tables\n");
2032 /* Clear changes flags which does not need management or have been
2034 p_vout->i_changes &= ~(VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2035 VOUT_YUV_CHANGE | VOUT_INFO_CHANGE |
2036 VOUT_INTF_CHANGE | VOUT_SCALE_CHANGE );
2038 /* Detect unauthorized changes */
2039 if( p_vout->i_changes )
2041 /* Some changes were not acknowledged by p_vout->p_sys_manage or this
2042 * function, it means they should not be authorized */
2043 intf_ErrMsg( "error: unauthorized changes in the video output thread\n" );
2050 /*****************************************************************************
2051 * Align: align a subpicture in the screen
2052 *****************************************************************************
2053 * This function is used for rendering text or subpictures. It returns non 0
2054 * it the final aera is not fully included in display area. Return coordinates
2056 *****************************************************************************/
2057 static int Align( vout_thread_t *p_vout, int *pi_x, int *pi_y,
2058 int i_width, int i_height, int i_h_align, int i_v_align )
2060 /* Align horizontally */
2064 *pi_x -= i_width / 2;
2067 *pi_x += (p_vout->i_width - i_width) / 2;
2073 *pi_x += p_vout->i_width - i_width;
2077 /* Align vertically */
2081 *pi_y -= i_height / 2;
2084 *pi_y += (p_vout->i_height - i_height) / 2;
2090 *pi_y += p_vout->i_height - i_height;
2092 case SUBTITLE_RALIGN:
2093 *pi_y += (p_vout->i_height + p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y +
2094 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height - i_height) / 2;
2098 /* Return non 0 if clipping failed */
2099 return( (*pi_x < 0) || (*pi_y < 0) ||
2100 (*pi_x + i_width > p_vout->i_width) || (*pi_y + i_height > p_vout->i_height) );
2103 /*****************************************************************************
2104 * SetPalette: sets an 8 bpp palette
2105 *****************************************************************************
2106 * This function is just a prototype that does nothing. Architectures that
2107 * support palette allocation should override it.
2108 *****************************************************************************/
2109 static void SetPalette ( p_vout_thread_t p_vout, u16 *red,
2110 u16 *green, u16 *blue, u16 *transp )
2112 intf_ErrMsg( "SetPalette: method does not support palette changing\n" );