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() */
37 # include <sys/times.h>
46 #include "video_output.h"
47 #include "video_text.h"
48 #include "video_spu.h"
49 #include "video_yuv.h"
54 /*****************************************************************************
56 *****************************************************************************/
57 static int BinaryLog ( u32 i );
58 static void MaskToShift ( int *pi_left, int *pi_right, u32 i_mask );
59 static int InitThread ( vout_thread_t *p_vout );
60 static void RunThread ( vout_thread_t *p_vout );
61 static void ErrorThread ( vout_thread_t *p_vout );
62 static void EndThread ( vout_thread_t *p_vout );
63 static void DestroyThread ( vout_thread_t *p_vout, int i_status );
64 static void Print ( vout_thread_t *p_vout, int i_x, int i_y,
65 int i_h_align, int i_v_align,
66 unsigned char *psz_text );
67 static void SetBufferArea ( vout_thread_t *p_vout, int i_x, int i_y,
69 static void SetBufferPicture ( vout_thread_t *p_vout, picture_t *p_pic );
70 static void RenderPicture ( vout_thread_t *p_vout, picture_t *p_pic );
71 static void RenderPictureInfo ( vout_thread_t *p_vout, picture_t *p_pic );
72 static void RenderSubPicture ( vout_thread_t *p_vout,
73 subpicture_t *p_subpic );
74 static void RenderInterface ( vout_thread_t *p_vout );
75 static int RenderIdle ( vout_thread_t *p_vout );
76 static int RenderSplash ( vout_thread_t *p_vout );
77 static void RenderInfo ( vout_thread_t *p_vout );
78 static int Manage ( vout_thread_t *p_vout );
79 static int Align ( vout_thread_t *p_vout, int *pi_x,
80 int *pi_y, int i_width, int i_height,
81 int i_h_align, int i_v_align );
82 static void SetPalette ( p_vout_thread_t p_vout, u16 *red,
83 u16 *green, u16 *blue, u16 *transp );
85 /*****************************************************************************
86 * vout_CreateThread: creates a new video output thread
87 *****************************************************************************
88 * This function creates a new video output thread, and returns a pointer
89 * to its description. On error, it returns NULL.
90 * If pi_status is NULL, then the function will block until the thread is ready.
91 * If not, it will be updated using one of the THREAD_* constants.
92 *****************************************************************************/
93 vout_thread_t * vout_CreateThread ( char *psz_display, int i_root_window,
94 int i_width, int i_height, int *pi_status,
95 int i_method, void *p_data )
97 vout_thread_t * p_vout; /* thread descriptor */
98 typedef void ( vout_getplugin_t ) ( vout_thread_t * p_vout );
99 int i_status; /* thread status */
100 int i_index; /* index for array initialization */
101 int i_best_index = 0, i_best_score = 0;
103 /* Allocate descriptor */
104 p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
107 intf_ErrMsg( "vout error: %s", strerror(ENOMEM) );
111 p_vout->p_set_palette = SetPalette;
113 /* Get a suitable video plugin */
114 for( i_index = 0 ; i_index < p_main->p_bank->i_plugin_count ; i_index++ )
116 /* If there's a plugin in p_info ... */
117 if( p_main->p_bank->p_info[ i_index ] != NULL )
119 /* ... and if this plugin provides the functions we want ... */
120 if( p_main->p_bank->p_info[ i_index ]->vout_GetPlugin != NULL )
122 /* ... and if this plugin has a good score ... */
123 if( p_main->p_bank->p_info[ i_index ]->i_score > i_best_score )
125 /* ... then take it */
126 i_best_score = p_main->p_bank->p_info[ i_index ]->i_score;
127 i_best_index = i_index;
133 if( i_best_score == 0 )
139 /* Get the plugin functions */
140 ( (vout_getplugin_t *)
141 p_main->p_bank->p_info[ i_best_index ]->vout_GetPlugin )( p_vout );
143 /* Initialize thread properties - thread id and locks will be initialized
147 p_vout->b_active = 0;
148 p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
149 *p_vout->pi_status = THREAD_CREATE;
151 /* Initialize some fields used by the system-dependant method - these
152 * fields will probably be modified by the method, and are only
154 p_vout->i_changes = 0;
155 p_vout->i_width = i_width;
156 p_vout->i_height = i_height;
157 p_vout->i_bytes_per_line = i_width * 2;
158 p_vout->i_screen_depth = 15;
159 p_vout->i_bytes_per_pixel = 2;
160 p_vout->f_gamma = VOUT_GAMMA;
161 p_vout->b_need_render = 1;
163 p_vout->b_grayscale = main_GetIntVariable( VOUT_GRAYSCALE_VAR,
164 VOUT_GRAYSCALE_DEFAULT );
166 p_vout->b_interface = 0;
169 intf_DbgMsg( "wished configuration: %dx%d, %d/%d bpp (%d Bpl)",
170 p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
171 p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line );
173 /* Initialize idle screen */
174 p_vout->last_display_date = 0;
175 p_vout->last_idle_date = 0;
176 p_vout->init_display_date = mdate();
177 p_vout->render_time = 10000;
179 /* Initialize statistics fields */
180 p_vout->c_fps_samples = 0;
182 /* Initialize buffer index */
183 p_vout->i_buffer_index = 0;
185 /* Initialize pictures and subpictures - translation tables and functions
186 * will be initialized later in InitThread */
187 for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
189 p_vout->p_picture[i_index].i_type = EMPTY_PICTURE;
190 p_vout->p_picture[i_index].i_status = FREE_PICTURE;
192 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
194 p_vout->p_subpicture[i_index].i_type = EMPTY_SUBPICTURE;
195 p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE;
197 p_vout->i_pictures = 0;
199 /* Create and initialize system-dependant method - this function issues its
200 * own error messages */
201 if( p_vout->p_sys_create( p_vout, psz_display, i_root_window, p_data ) )
206 intf_DbgMsg( "actual configuration: %dx%d, %d/%d bpp (%d Bpl), "
207 "masks: 0x%x/0x%x/0x%x",
208 p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
209 p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line,
210 p_vout->i_red_mask, p_vout->i_green_mask,
211 p_vout->i_blue_mask );
213 /* Calculate shifts from system-updated masks */
214 MaskToShift( &p_vout->i_red_lshift, &p_vout->i_red_rshift,
215 p_vout->i_red_mask );
216 MaskToShift( &p_vout->i_green_lshift, &p_vout->i_green_rshift,
217 p_vout->i_green_mask );
218 MaskToShift( &p_vout->i_blue_lshift, &p_vout->i_blue_rshift,
219 p_vout->i_blue_mask );
221 /* Set some useful colors */
222 p_vout->i_white_pixel = RGB2PIXEL( p_vout, 255, 255, 255 );
223 p_vout->i_black_pixel = RGB2PIXEL( p_vout, 0, 0, 0 );
224 p_vout->i_gray_pixel = RGB2PIXEL( p_vout, 128, 128, 128 );
225 p_vout->i_blue_pixel = RGB2PIXEL( p_vout, 0, 0, 50 );
227 /* Load fonts - fonts must be initialized after the system method since
228 * they may be dependant on screen depth and other thread properties */
229 p_vout->p_default_font = vout_LoadFont( DATA_PATH "/" VOUT_DEFAULT_FONT );
230 if( p_vout->p_default_font == NULL )
232 p_vout->p_default_font = vout_LoadFont( "share/" VOUT_DEFAULT_FONT );
234 if( p_vout->p_default_font == NULL )
236 intf_ErrMsg( "vout error: could not load default font" );
237 p_vout->p_sys_destroy( p_vout );
241 p_vout->p_large_font = vout_LoadFont( DATA_PATH "/" VOUT_LARGE_FONT );
242 if( p_vout->p_large_font == NULL )
244 p_vout->p_large_font = vout_LoadFont( "share/" VOUT_LARGE_FONT );
246 if( p_vout->p_large_font == NULL )
248 intf_ErrMsg( "vout error: could not load large font" );
249 vout_UnloadFont( p_vout->p_default_font );
250 p_vout->p_sys_destroy( p_vout );
255 /* Create thread and set locks */
256 vlc_mutex_init( &p_vout->picture_lock );
257 vlc_mutex_init( &p_vout->subpicture_lock );
258 vlc_mutex_init( &p_vout->change_lock );
260 if( vlc_thread_create( &p_vout->thread_id, "video output",
261 (void *) RunThread, (void *) p_vout) )
263 intf_ErrMsg("vout error: %s", strerror(ENOMEM));
264 vout_UnloadFont( p_vout->p_default_font );
265 vout_UnloadFont( p_vout->p_large_font );
266 p_vout->p_sys_destroy( p_vout );
271 intf_Msg( "Video display initialized (%dx%d, %d/%d bpp)", p_vout->i_width,
272 p_vout->i_height, p_vout->i_screen_depth,
273 p_vout->i_bytes_per_pixel * 8 );
275 /* If status is NULL, wait until the thread is created */
276 if( pi_status == NULL )
280 msleep( THREAD_SLEEP );
281 }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
282 && (i_status != THREAD_FATAL) );
283 if( i_status != THREAD_READY )
291 /*****************************************************************************
292 * vout_DestroyThread: destroys a previously created thread
293 *****************************************************************************
294 * Destroy a terminated thread.
295 * The function will request a destruction of the specified thread. If pi_error
296 * is NULL, it will return once the thread is destroyed. Else, it will be
297 * update using one of the THREAD_* constants.
298 *****************************************************************************/
299 void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
301 int i_status; /* thread status */
305 p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
306 *p_vout->pi_status = THREAD_DESTROY;
308 /* Request thread destruction */
311 /* If status is NULL, wait until thread has been destroyed */
312 if( pi_status == NULL )
316 msleep( THREAD_SLEEP );
317 }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
318 && (i_status != THREAD_FATAL) );
322 /*****************************************************************************
323 * vout_DisplaySubPicture: display a subpicture unit
324 *****************************************************************************
325 * Remove the reservation flag of an subpicture, which will cause it to be ready
326 * for display. The picture does not need to be locked, since it is ignored by
327 * the output thread if is reserved.
328 *****************************************************************************/
329 void vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
332 char psz_begin_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */
333 char psz_end_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */
337 /* Check if status is valid */
338 if( p_subpic->i_status != RESERVED_SUBPICTURE )
340 intf_DbgMsg("error: subpicture %p has invalid status %d", p_subpic,
341 p_subpic->i_status );
345 /* Remove reservation flag */
346 p_subpic->i_status = READY_SUBPICTURE;
349 /* Send subpicture information */
350 intf_DbgMsg("subpicture %p: type=%d, begin date=%s, end date=%s",
351 p_subpic, p_subpic->i_type,
352 mstrtime( psz_begin_date, p_subpic->begin_date ),
353 mstrtime( psz_end_date, p_subpic->end_date ) );
357 /*****************************************************************************
358 * vout_CreateSubPicture: allocate a subpicture in the video output heap.
359 *****************************************************************************
360 * This function create a reserved subpicture in the video output heap.
361 * A null pointer is returned if the function fails. This method provides an
362 * already allocated zone of memory in the spu data fields. It needs locking
363 * since several pictures can be created by several producers threads.
364 *****************************************************************************/
365 subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type,
368 int i_subpic; /* subpicture index */
369 subpicture_t * p_free_subpic = NULL; /* first free subpicture */
370 subpicture_t * p_destroyed_subpic = NULL; /* first destroyed subpic */
373 vlc_mutex_lock( &p_vout->subpicture_lock );
376 * Look for an empty place
378 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
380 if( p_vout->p_subpicture[i_subpic].i_status == DESTROYED_SUBPICTURE )
382 /* Subpicture is marked for destruction, but is still allocated */
383 if( (p_vout->p_subpicture[i_subpic].i_type == i_type) &&
384 (p_vout->p_subpicture[i_subpic].i_size >= i_size) )
386 /* Memory size do match or is smaller : memory will not be
387 * reallocated, and function can end immediately - this is
388 * the best possible case, since no memory allocation needs
390 p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
392 intf_DbgMsg("subpicture %p (in destroyed subpicture slot)",
393 &p_vout->p_subpicture[i_subpic] );
395 vlc_mutex_unlock( &p_vout->subpicture_lock );
396 return( &p_vout->p_subpicture[i_subpic] );
398 else if( p_destroyed_subpic == NULL )
400 /* Memory size do not match, but subpicture index will be kept in
401 * case no other place are left */
402 p_destroyed_subpic = &p_vout->p_subpicture[i_subpic];
405 else if( (p_free_subpic == NULL) &&
406 (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE ))
408 /* Subpicture is empty and ready for allocation */
409 p_free_subpic = &p_vout->p_subpicture[i_subpic];
413 /* If no free subpictures are available, use a destroyed subpicture */
414 if( (p_free_subpic == NULL) && (p_destroyed_subpic != NULL ) )
416 /* No free subpicture or matching destroyed subpictures have been
417 * found, but a destroyed subpicture is still avalaible */
418 free( p_destroyed_subpic->p_data );
419 p_free_subpic = p_destroyed_subpic;
425 if( p_free_subpic != NULL )
427 /* Allocate memory */
430 case TEXT_SUBPICTURE: /* text subpicture */
431 p_free_subpic->p_data = malloc( i_size + 1 );
433 case DVD_SUBPICTURE: /* DVD subpicture unit */
434 p_free_subpic->p_data = malloc( i_size );
438 intf_DbgMsg("error: unknown subpicture type %d", i_type );
439 p_free_subpic->p_data = NULL;
444 if( p_free_subpic->p_data != NULL )
446 /* Copy subpicture information, set some default values */
447 p_free_subpic->i_type = i_type;
448 p_free_subpic->i_status = RESERVED_SUBPICTURE;
449 p_free_subpic->i_size = i_size;
450 p_free_subpic->i_x = 0;
451 p_free_subpic->i_y = 0;
452 p_free_subpic->i_width = 0;
453 p_free_subpic->i_height = 0;
454 p_free_subpic->i_horizontal_align = CENTER_RALIGN;
455 p_free_subpic->i_vertical_align = CENTER_RALIGN;
459 /* Memory allocation failed : set subpicture as empty */
460 p_free_subpic->i_type = EMPTY_SUBPICTURE;
461 p_free_subpic->i_status = FREE_SUBPICTURE;
462 p_free_subpic = NULL;
463 intf_ErrMsg("spu warning: %s", strerror( ENOMEM ) );
467 intf_DbgMsg("subpicture %p (in free subpicture slot)", p_free_subpic );
469 vlc_mutex_unlock( &p_vout->subpicture_lock );
470 return( p_free_subpic );
473 /* No free or destroyed subpicture could be found */
474 intf_DbgMsg( "warning: subpicture heap is full" );
475 vlc_mutex_unlock( &p_vout->subpicture_lock );
479 /*****************************************************************************
480 * vout_DestroySubPicture: remove a subpicture from the heap
481 *****************************************************************************
482 * This function frees a previously reserved subpicture.
483 * It is meant to be used when the construction of a picture aborted.
484 * This function does not need locking since reserved subpictures are ignored
485 * by the output thread.
486 *****************************************************************************/
487 void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
490 /* Check if status is valid */
491 if( p_subpic->i_status != RESERVED_SUBPICTURE )
493 intf_DbgMsg("error: subpicture %p has invalid status %d",
494 p_subpic, p_subpic->i_status );
498 p_subpic->i_status = DESTROYED_SUBPICTURE;
501 intf_DbgMsg("subpicture %p", p_subpic);
505 /*****************************************************************************
506 * vout_DisplayPicture: display a picture
507 *****************************************************************************
508 * Remove the reservation flag of a picture, which will cause it to be ready for
509 * display. The picture won't be displayed until vout_DatePicture has been
511 *****************************************************************************/
512 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
514 vlc_mutex_lock( &p_vout->picture_lock );
515 switch( p_pic->i_status )
517 case RESERVED_PICTURE:
518 p_pic->i_status = RESERVED_DISP_PICTURE;
520 case RESERVED_DATED_PICTURE:
521 p_pic->i_status = READY_PICTURE;
525 intf_DbgMsg("error: picture %p has invalid status %d", p_pic, p_pic->i_status );
531 intf_DbgMsg("picture %p", p_pic);
533 vlc_mutex_unlock( &p_vout->picture_lock );
536 /*****************************************************************************
537 * vout_DatePicture: date a picture
538 *****************************************************************************
539 * Remove the reservation flag of a picture, which will cause it to be ready for
540 * display. The picture won't be displayed until vout_DisplayPicture has been
542 *****************************************************************************/
543 void vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date )
546 char psz_date[MSTRTIME_MAX_SIZE]; /* date */
549 vlc_mutex_lock( &p_vout->picture_lock );
551 switch( p_pic->i_status )
553 case RESERVED_PICTURE:
554 p_pic->i_status = RESERVED_DATED_PICTURE;
556 case RESERVED_DISP_PICTURE:
557 p_pic->i_status = READY_PICTURE;
561 intf_DbgMsg("error: picture %p has invalid status %d", p_pic, p_pic->i_status );
567 intf_DbgMsg("picture %p, display date: %s", p_pic, mstrtime( psz_date, p_pic->date) );
569 vlc_mutex_unlock( &p_vout->picture_lock );
572 /*****************************************************************************
573 * vout_CreatePicture: allocate a picture in the video output heap.
574 *****************************************************************************
575 * This function create a reserved image in the video output heap.
576 * A null pointer is returned if the function fails. This method provides an
577 * already allocated zone of memory in the picture data fields. It needs locking
578 * since several pictures can be created by several producers threads.
579 *****************************************************************************/
580 picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type,
581 int i_width, int i_height )
583 int i_picture; /* picture index */
584 int i_chroma_width = 0; /* chroma width */
585 picture_t * p_free_picture = NULL; /* first free picture */
586 picture_t * p_destroyed_picture = NULL; /* first destroyed picture */
589 vlc_mutex_lock( &p_vout->picture_lock );
592 * Look for an empty place
594 for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
596 if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
598 /* Picture is marked for destruction, but is still allocated - note
599 * that if width and type are the same for two pictures, chroma_width
600 * should also be the same */
601 if( (p_vout->p_picture[i_picture].i_type == i_type) &&
602 (p_vout->p_picture[i_picture].i_height == i_height) &&
603 (p_vout->p_picture[i_picture].i_width == i_width) )
605 /* Memory size do match : memory will not be reallocated, and function
606 * can end immediately - this is the best possible case, since no
607 * memory allocation needs to be done */
608 p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
609 p_vout->i_pictures++;
611 intf_DbgMsg("picture %p (in destroyed picture slot)",
612 &p_vout->p_picture[i_picture] );
614 vlc_mutex_unlock( &p_vout->picture_lock );
615 return( &p_vout->p_picture[i_picture] );
617 else if( p_destroyed_picture == NULL )
619 /* Memory size do not match, but picture index will be kept in
620 * case no other place are left */
621 p_destroyed_picture = &p_vout->p_picture[i_picture];
624 else if( (p_free_picture == NULL) &&
625 (p_vout->p_picture[i_picture].i_status == FREE_PICTURE ))
627 /* Picture is empty and ready for allocation */
628 p_free_picture = &p_vout->p_picture[i_picture];
632 /* If no free picture is available, use a destroyed picture */
633 if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) )
635 /* No free picture or matching destroyed picture has been found, but
636 * a destroyed picture is still avalaible */
637 free( p_destroyed_picture->p_data );
638 p_free_picture = p_destroyed_picture;
644 if( p_free_picture != NULL )
646 /* Allocate memory */
649 case YUV_420_PICTURE: /* YUV 420: 1,1/4,1/4 samples per pixel */
650 i_chroma_width = i_width / 2;
651 p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
652 p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
653 p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*4/2;
654 p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*5/2;
656 case YUV_422_PICTURE: /* YUV 422: 1,1/2,1/2 samples per pixel */
657 i_chroma_width = i_width / 2;
658 p_free_picture->p_data = malloc( i_height * i_chroma_width * 4 * sizeof( yuv_data_t ) );
659 p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
660 p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
661 p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*3;
663 case YUV_444_PICTURE: /* YUV 444: 1,1,1 samples per pixel */
664 i_chroma_width = i_width;
665 p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
666 p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
667 p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width;
668 p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
672 intf_DbgMsg("error: unknown picture type %d", i_type );
673 p_free_picture->p_data = NULL;
678 if( p_free_picture->p_data != NULL )
680 /* Copy picture information, set some default values */
681 p_free_picture->i_type = i_type;
682 p_free_picture->i_status = RESERVED_PICTURE;
683 p_free_picture->i_matrix_coefficients = 1;
684 p_free_picture->i_width = i_width;
685 p_free_picture->i_height = i_height;
686 p_free_picture->i_chroma_width = i_chroma_width;
687 p_free_picture->i_display_horizontal_offset = 0;
688 p_free_picture->i_display_vertical_offset = 0;
689 p_free_picture->i_display_width = i_width;
690 p_free_picture->i_display_height = i_height;
691 p_free_picture->i_aspect_ratio = AR_SQUARE_PICTURE;
692 p_free_picture->i_refcount = 0;
693 p_vout->i_pictures++;
697 /* Memory allocation failed : set picture as empty */
698 p_free_picture->i_type = EMPTY_PICTURE;
699 p_free_picture->i_status = FREE_PICTURE;
700 p_free_picture = NULL;
701 intf_ErrMsg( "vout warning: %s", strerror( ENOMEM ) );
705 intf_DbgMsg("picture %p (in free picture slot)", p_free_picture );
707 vlc_mutex_unlock( &p_vout->picture_lock );
708 return( p_free_picture );
711 /* No free or destroyed picture could be found */
712 intf_DbgMsg( "warning: picture heap is full" );
713 vlc_mutex_unlock( &p_vout->picture_lock );
717 /*****************************************************************************
718 * vout_DestroyPicture: remove a permanent or reserved picture from the heap
719 *****************************************************************************
720 * This function frees a previously reserved picture or a permanent
721 * picture. It is meant to be used when the construction of a picture aborted.
722 * Note that the picture will be destroyed even if it is linked !
723 *****************************************************************************/
724 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
726 vlc_mutex_lock( &p_vout->picture_lock );
729 /* Check if picture status is valid */
730 if( (p_pic->i_status != RESERVED_PICTURE) &&
731 (p_pic->i_status != RESERVED_DATED_PICTURE) &&
732 (p_pic->i_status != RESERVED_DISP_PICTURE) )
734 intf_DbgMsg("error: picture %p has invalid status %d", p_pic, p_pic->i_status );
738 p_pic->i_status = DESTROYED_PICTURE;
739 p_vout->i_pictures--;
742 intf_DbgMsg("picture %p", p_pic);
744 vlc_mutex_unlock( &p_vout->picture_lock );
747 /*****************************************************************************
748 * vout_LinkPicture: increment reference counter of a picture
749 *****************************************************************************
750 * This function increment the reference counter of a picture in the video
751 * heap. It needs a lock since several producer threads can access the picture.
752 *****************************************************************************/
753 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
755 vlc_mutex_lock( &p_vout->picture_lock );
759 intf_DbgMsg("picture %p refcount=%d", p_pic, p_pic->i_refcount );
762 vlc_mutex_unlock( &p_vout->picture_lock );
765 /*****************************************************************************
766 * vout_UnlinkPicture: decrement reference counter of a picture
767 *****************************************************************************
768 * This function decrement the reference counter of a picture in the video heap.
769 *****************************************************************************/
770 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
772 vlc_mutex_lock( &p_vout->picture_lock );
776 if( p_pic->i_refcount < 0 )
778 intf_DbgMsg("error: refcount < 0");
779 p_pic->i_refcount = 0;
783 if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
785 p_pic->i_status = DESTROYED_PICTURE;
786 p_vout->i_pictures--;
790 intf_DbgMsg("picture %p refcount=%d", p_pic, p_pic->i_refcount );
793 vlc_mutex_unlock( &p_vout->picture_lock );
796 /*****************************************************************************
797 * vout_SetBuffers: set buffers adresses
798 *****************************************************************************
799 * This function is called by system drivers to set buffers video memory
801 *****************************************************************************/
802 void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 )
804 /* No picture previously */
805 p_vout->p_buffer[0].i_pic_x = 0;
806 p_vout->p_buffer[0].i_pic_y = 0;
807 p_vout->p_buffer[0].i_pic_width = 0;
808 p_vout->p_buffer[0].i_pic_height = 0;
809 p_vout->p_buffer[1].i_pic_x = 0;
810 p_vout->p_buffer[1].i_pic_y = 0;
811 p_vout->p_buffer[1].i_pic_width = 0;
812 p_vout->p_buffer[1].i_pic_height = 0;
814 /* The first area covers all the screen */
815 p_vout->p_buffer[0].i_areas = 1;
816 p_vout->p_buffer[0].pi_area_begin[0] = 0;
817 p_vout->p_buffer[0].pi_area_end[0] = p_vout->i_height - 1;
818 p_vout->p_buffer[1].i_areas = 1;
819 p_vout->p_buffer[1].pi_area_begin[0] = 0;
820 p_vout->p_buffer[1].pi_area_end[0] = p_vout->i_height - 1;
823 p_vout->p_buffer[0].p_data = p_buf1;
824 p_vout->p_buffer[1].p_data = p_buf2;
827 /*****************************************************************************
828 * vout_Pixel2RGB: return red, green and blue from pixel value
829 *****************************************************************************
830 * Return color values, in 0-255 range, of the decomposition of a pixel. This
831 * is a slow routine and should only be used for initialization phase.
832 *****************************************************************************/
833 void vout_Pixel2RGB( vout_thread_t *p_vout, u32 i_pixel, int *pi_red, int *pi_green, int *pi_blue )
835 *pi_red = i_pixel & p_vout->i_red_mask;
836 *pi_green = i_pixel & p_vout->i_green_mask;
837 *pi_blue = i_pixel & p_vout->i_blue_mask;
840 /* following functions are local */
842 /*****************************************************************************
843 * BinaryLog: computes the base 2 log of a binary value
844 *****************************************************************************
845 * This functions is used by MaskToShift, to get a bit index from a binary
847 *****************************************************************************/
848 static int BinaryLog(u32 i)
873 if (i != ((u32)1 << i_log))
875 intf_DbgMsg("internal error: binary log overflow");
881 /*****************************************************************************
882 * MaskToShift: transform a color mask into right and left shifts
883 *****************************************************************************
884 * This function is used for obtaining color shifts from masks.
885 *****************************************************************************/
886 static void MaskToShift( int *pi_left, int *pi_right, u32 i_mask )
888 u32 i_low, i_high; /* lower hand higher bits of the mask */
891 i_low = i_mask & (- i_mask); /* lower bit of the mask */
892 i_high = i_mask + i_low; /* higher bit of the mask */
894 /* Transform bits into an index */
895 i_low = BinaryLog (i_low);
896 i_high = BinaryLog (i_high);
898 /* Update pointers and return */
900 *pi_right = (8 - i_high + i_low);
903 /*****************************************************************************
904 * InitThread: initialize video output thread
905 *****************************************************************************
906 * This function is called from RunThread and performs the second step of the
907 * initialization. It returns 0 on success. Note that the thread's flag are not
908 * modified inside this function.
909 *****************************************************************************/
910 static int InitThread( vout_thread_t *p_vout )
913 *p_vout->pi_status = THREAD_START;
915 vlc_mutex_lock( &p_vout->change_lock );
921 /* Initialize output method - this function issues its own error messages */
922 if( p_vout->p_sys_init( p_vout ) )
927 if( p_vout->b_need_render )
929 /* Initialize convertion tables and functions */
930 if( vout_InitYUV( p_vout ) )
932 intf_ErrMsg("error: can't allocate YUV translation tables");
937 /* Mark thread as running and return */
938 p_vout->b_active = 1;
939 *p_vout->pi_status = THREAD_READY;
942 intf_DbgMsg("thread ready");
946 /*****************************************************************************
947 * RunThread: video output thread
948 *****************************************************************************
949 * Video output thread. This function does only returns when the thread is
950 * terminated. It handles the pictures arriving in the video heap and the
951 * display device events.
952 *****************************************************************************/
953 static void RunThread( vout_thread_t *p_vout)
955 int i_index; /* index in heap */
956 mtime_t current_date; /* current date */
957 mtime_t display_date; /* display date */
958 boolean_t b_display; /* display flag */
959 picture_t * p_pic; /* picture pointer */
960 subpicture_t * p_subpic; /* subpicture pointer */
965 p_vout->b_error = InitThread( p_vout );
966 if( p_vout->b_error )
968 DestroyThread( p_vout, THREAD_ERROR );
973 * Main loop - it is not executed if an error occured during
976 while( (!p_vout->b_die) && (!p_vout->b_error) )
978 /* Initialize loop variables */
982 current_date = mdate();
985 if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
987 intf_Msg("vout stats: picture heap: %d/%d",
988 p_vout->i_pictures, VOUT_MAX_PICTURES);
993 * Find the picture to display - this operation does not need lock,
994 * since only READY_PICTUREs are handled
996 for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
998 if( (p_vout->p_picture[i_index].i_status == READY_PICTURE) &&
1000 (p_vout->p_picture[i_index].date < display_date) ) )
1002 p_pic = &p_vout->p_picture[i_index];
1003 display_date = p_pic->date;
1009 /* Computes FPS rate */
1010 p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date;
1012 if( display_date < current_date - p_vout->render_time )
1014 /* Picture is late: it will be destroyed and the thread
1015 * will sleep and go to next picture */
1017 vlc_mutex_lock( &p_vout->picture_lock );
1018 if( p_pic->i_refcount )
1020 p_pic->i_status = DISPLAYED_PICTURE;
1024 p_pic->i_status = DESTROYED_PICTURE;
1025 p_vout->i_pictures--;
1028 "warning: late picture skipped (%p)", p_pic );
1029 vlc_mutex_unlock( &p_vout->picture_lock );
1033 else if( display_date > current_date + VOUT_DISPLAY_DELAY )
1035 /* A picture is ready to be rendered, but its rendering date
1036 * is far from the current one so the thread will perform an
1037 * empty loop as if no picture were found. The picture state
1044 * Find the subpictures to display - this operation does not need
1045 * lock, since only READY_SUBPICTURE are handled. If no picture
1046 * has been selected, display_date will depend on the subpicture.
1047 * We get an easily parsable chained list of subpictures which
1048 * ends with NULL since p_subpic was initialized to NULL.
1050 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1052 if( p_vout->p_subpicture[i_index].i_status == READY_SUBPICTURE )
1054 p_vout->p_subpicture[i_index].p_next = p_subpic;
1055 p_subpic = &p_vout->p_subpicture[i_index];
1060 * Perform rendering, sleep and display rendered picture
1062 if( p_pic ) /* picture and perhaps subpicture */
1064 b_display = p_vout->b_active;
1065 p_vout->last_display_date = display_date;
1066 p_vout->p_rendered_pic = p_pic;
1071 /* Set picture dimensions and clear buffer */
1072 SetBufferPicture( p_vout, p_pic );
1074 /* FIXME: if b_need_render == 0 we need to do something with
1075 * the subpictures one day. */
1077 if( p_vout->b_need_render && b_display )
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 /* Render interface and subpicture */
1093 if( b_display && p_vout->b_interface && p_vout->b_need_render )
1095 RenderInterface( p_vout );
1099 else if( p_vout->b_active && p_vout->b_need_render
1100 && p_vout->init_display_date == 0)
1102 /* Idle or interface screen alone */
1104 if( p_vout->b_interface && 0 /* && XXX?? intf_change */ )
1106 /* Interface has changed, so a new rendering is required - force
1107 * it by setting last idle date to 0 */
1108 p_vout->last_idle_date = 0;
1111 /* Render idle screen and update idle date, then render interface if
1113 b_display = RenderIdle( p_vout );
1116 p_vout->last_idle_date = current_date;
1117 if( p_vout->b_interface )
1119 RenderInterface( p_vout );
1131 * Check for the current time and
1132 * display splash screen if everything is on time
1134 if( p_vout->init_display_date > 0 && p_vout->b_need_render )
1136 if( p_vout->b_active &&
1137 mdate()-p_vout->init_display_date < 5000000)
1139 /* there is something to display ! */
1141 RenderSplash( p_vout );
1144 /* no splash screen ! */
1145 intf_ErrMsgImm("End of splash screen");
1146 p_vout->init_display_date=0;
1152 * Sleep, wake up and display rendered picture
1155 if( display_date != 0 )
1157 /* Store render time using Bresenham algorithm */
1158 p_vout->render_time += mdate() - current_date;
1159 p_vout->render_time >>= 1;
1162 /* Give back change lock */
1163 vlc_mutex_unlock( &p_vout->change_lock );
1165 /* Sleep a while or until a given date */
1166 if( display_date != 0 )
1168 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1172 msleep( VOUT_IDLE_SLEEP );
1175 /* On awakening, take back lock and send immediately picture to display,
1176 * then swap buffers */
1177 vlc_mutex_lock( &p_vout->change_lock );
1179 intf_DbgMsg( "picture %p, subpicture %p in buffer %d, display=%d", p_pic, p_subpic,
1180 p_vout->i_buffer_index, b_display /* && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) */ );
1182 if( b_display /* && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) */ )
1184 p_vout->p_sys_display( p_vout );
1186 p_vout->i_buffer_index = ++p_vout->i_buffer_index & 1;
1192 /* Remove picture from heap */
1193 vlc_mutex_lock( &p_vout->picture_lock );
1194 if( p_pic->i_refcount )
1196 p_pic->i_status = DISPLAYED_PICTURE;
1200 p_pic->i_status = DESTROYED_PICTURE;
1201 p_vout->i_pictures--;
1203 vlc_mutex_unlock( &p_vout->picture_lock );
1208 * Check events and manage thread
1210 if( p_vout->p_sys_manage( p_vout ) | Manage( p_vout ) )
1212 /* A fatal error occured, and the thread must terminate immediately,
1213 * without displaying anything - setting b_error to 1 cause the
1214 * immediate end of the main while() loop. */
1215 p_vout->b_error = 1;
1220 * Error loop - wait until the thread destruction is requested
1222 if( p_vout->b_error )
1224 ErrorThread( p_vout );
1228 EndThread( p_vout );
1229 DestroyThread( p_vout, THREAD_OVER );
1230 intf_DbgMsg( "thread end" );
1233 /*****************************************************************************
1234 * ErrorThread: RunThread() error loop
1235 *****************************************************************************
1236 * This function is called when an error occured during thread main's loop. The
1237 * thread can still receive feed, but must be ready to terminate as soon as
1239 *****************************************************************************/
1240 static void ErrorThread( vout_thread_t *p_vout )
1242 /* Wait until a `die' order */
1243 while( !p_vout->b_die )
1246 msleep( VOUT_IDLE_SLEEP );
1250 /*****************************************************************************
1251 * EndThread: thread destruction
1252 *****************************************************************************
1253 * This function is called when the thread ends after a sucessful
1254 * initialization. It frees all ressources allocated by InitThread.
1255 *****************************************************************************/
1256 static void EndThread( vout_thread_t *p_vout )
1258 int i_index; /* index in heap */
1261 *p_vout->pi_status = THREAD_END;
1265 struct tms cpu_usage;
1266 times( &cpu_usage );
1268 intf_Msg("vout stats: cpu usage (user: %d, system: %d)",
1269 cpu_usage.tms_utime, cpu_usage.tms_stime);
1273 /* Destroy all remaining pictures and subpictures */
1274 for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
1276 if( p_vout->p_picture[i_index].i_status != FREE_PICTURE )
1278 free( p_vout->p_picture[i_index].p_data );
1281 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1283 if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
1285 free( p_vout->p_subpicture[i_index].p_data );
1289 /* Destroy translation tables */
1290 vout_EndYUV( p_vout );
1291 p_vout->p_sys_end( p_vout );
1294 /*****************************************************************************
1295 * DestroyThread: thread destruction
1296 *****************************************************************************
1297 * This function is called when the thread ends. It frees all ressources
1298 * allocated by CreateThread. Status is available at this stage.
1299 *****************************************************************************/
1300 static void DestroyThread( vout_thread_t *p_vout, int i_status )
1302 int *pi_status; /* status adress */
1304 /* Store status adress */
1305 pi_status = p_vout->pi_status;
1307 /* Destroy thread structures allocated by Create and InitThread */
1308 vout_UnloadFont( p_vout->p_default_font );
1309 vout_UnloadFont( p_vout->p_large_font );
1310 p_vout->p_sys_destroy( p_vout );
1312 /* Free structure */
1314 *pi_status = i_status;
1317 /*****************************************************************************
1318 * Print: print simple text on a picture
1319 *****************************************************************************
1320 * This function will print a simple text on the picture. It is designed to
1321 * print debugging or general information.
1322 *****************************************************************************/
1323 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 )
1325 int i_text_height; /* total text height */
1326 int i_text_width; /* total text width */
1328 /* Update upper left coordinates according to alignment */
1329 vout_TextSize( p_vout->p_default_font, 0, psz_text, &i_text_width, &i_text_height );
1330 if( !Align( p_vout, &i_x, &i_y, i_text_width, i_text_height, i_h_align, i_v_align ) )
1332 /* Set area and print text */
1333 SetBufferArea( p_vout, i_x, i_y, i_text_width, i_text_height );
1334 vout_Print( p_vout->p_default_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1335 i_y * p_vout->i_bytes_per_line + i_x * p_vout->i_bytes_per_pixel,
1336 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1337 p_vout->i_white_pixel, 0, 0,
1342 /*****************************************************************************
1343 * SetBufferArea: activate an area in current buffer
1344 *****************************************************************************
1345 * This function is called when something is rendered on the current buffer.
1346 * It set the area as active and prepare it to be cleared on next rendering.
1347 * Pay attention to the fact that in this functions, i_h is in fact the end y
1348 * coordinate of the new area.
1349 *****************************************************************************/
1350 static void SetBufferArea( vout_thread_t *p_vout, int i_x, int i_y, int i_w, int i_h )
1352 vout_buffer_t * p_buffer; /* current buffer */
1353 int i_area_begin, i_area_end; /* area vertical extension */
1354 int i_area, i_area_copy; /* area index */
1355 int i_area_shift; /* shift distance for areas */
1357 /* Choose buffer and modify h to end of area position */
1358 p_buffer = &p_vout->p_buffer[ p_vout->i_buffer_index ];
1362 * Remove part of the area which is inside the picture - this is done
1363 * by calling again SetBufferArea with the correct areas dimensions.
1365 if( (i_x >= p_buffer->i_pic_x) && (i_x + i_w <= p_buffer->i_pic_x + p_buffer->i_pic_width) )
1367 i_area_begin = p_buffer->i_pic_y;
1368 i_area_end = i_area_begin + p_buffer->i_pic_height - 1;
1370 if( ((i_y >= i_area_begin) && (i_y <= i_area_end)) ||
1371 ((i_h >= i_area_begin) && (i_h <= i_area_end)) ||
1372 ((i_y < i_area_begin) && (i_h > i_area_end)) )
1374 /* Keep the stripe above the picture, if any */
1375 if( i_y < i_area_begin )
1377 SetBufferArea( p_vout, i_x, i_y, i_w, i_area_begin - i_y );
1379 /* Keep the stripe below the picture, if any */
1380 if( i_h > i_area_end )
1382 SetBufferArea( p_vout, i_x, i_area_end, i_w, i_h - i_area_end );
1388 /* Skip some extensions until interesting areas */
1390 (i_area < p_buffer->i_areas) &&
1391 (p_buffer->pi_area_end[i_area] + 1 <= i_y);
1397 if( i_area == p_buffer->i_areas )
1399 /* New area is below all existing ones: just add it at the end of the
1400 * array, if possible - otherwise, append it to the last one */
1401 if( i_area < VOUT_MAX_AREAS )
1403 p_buffer->pi_area_begin[i_area] = i_y;
1404 p_buffer->pi_area_end[i_area] = i_h;
1405 p_buffer->i_areas++;
1410 intf_DbgMsg("area overflow");
1412 p_buffer->pi_area_end[VOUT_MAX_AREAS - 1] = i_h;
1417 i_area_begin = p_buffer->pi_area_begin[i_area];
1418 i_area_end = p_buffer->pi_area_end[i_area];
1420 if( i_y < i_area_begin )
1422 if( i_h >= i_area_begin - 1 )
1424 /* Extend area above */
1425 p_buffer->pi_area_begin[i_area] = i_y;
1429 /* Create a new area above : merge last area if overflow, then
1430 * move all old areas down */
1431 if( p_buffer->i_areas == VOUT_MAX_AREAS )
1434 intf_DbgMsg("areas overflow");
1436 p_buffer->pi_area_end[VOUT_MAX_AREAS - 2] = p_buffer->pi_area_end[VOUT_MAX_AREAS - 1];
1440 p_buffer->i_areas++;
1442 for( i_area_copy = p_buffer->i_areas - 1; i_area_copy > i_area; i_area_copy-- )
1444 p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy - 1];
1445 p_buffer->pi_area_end[i_area_copy] = p_buffer->pi_area_end[i_area_copy - 1];
1447 p_buffer->pi_area_begin[i_area] = i_y;
1448 p_buffer->pi_area_end[i_area] = i_h;
1452 if( i_h > i_area_end )
1454 /* Find further areas which can be merged with the new one */
1455 for( i_area_copy = i_area + 1;
1456 (i_area_copy < p_buffer->i_areas) &&
1457 (p_buffer->pi_area_begin[i_area] <= i_h);
1464 if( i_area_copy != i_area )
1466 /* Merge with last possible areas */
1467 p_buffer->pi_area_end[i_area] = MAX( i_h, p_buffer->pi_area_end[i_area_copy] );
1469 /* Shift lower areas upward */
1470 i_area_shift = i_area_copy - i_area;
1471 p_buffer->i_areas -= i_area_shift;
1472 for( i_area_copy = i_area + 1; i_area_copy < p_buffer->i_areas; i_area_copy++ )
1474 p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy + i_area_shift];
1475 p_buffer->pi_area_end[i_area_copy] = p_buffer->pi_area_end[i_area_copy + i_area_shift];
1480 /* Extend area below */
1481 p_buffer->pi_area_end[i_area] = i_h;
1487 /*****************************************************************************
1488 * SetBufferPicture: clear buffer and set picture area
1489 *****************************************************************************
1490 * This function is called before any rendering. It clears the current
1491 * rendering buffer and set the new picture area. If the picture pointer is
1492 * NULL, then no picture area is defined. Floating operations are avoided since
1493 * some MMX calculations may follow.
1494 *****************************************************************************/
1495 static void SetBufferPicture( vout_thread_t *p_vout, picture_t *p_pic )
1497 vout_buffer_t * p_buffer; /* current buffer */
1498 int i_pic_x, i_pic_y; /* picture position */
1499 int i_pic_width, i_pic_height; /* picture dimensions */
1500 int i_old_pic_y, i_old_pic_height; /* old picture area */
1501 int i_vout_width, i_vout_height; /* display dimensions */
1502 int i_area; /* area index */
1503 int i_data_index; /* area data index */
1504 int i_data_size; /* area data size, in 256 bytes blocs */
1505 u64 * p_data; /* area data, for clearing */
1506 byte_t * p_data8; /* area data, for clearing (slow) */
1508 /* Choose buffer and set display dimensions */
1509 p_buffer = &p_vout->p_buffer[ p_vout->i_buffer_index ];
1510 i_vout_width = p_vout->i_width;
1511 i_vout_height = p_vout->i_height;
1514 * Computes new picture size
1518 /* Try horizontal scaling first - width must be a mutiple of 16 */
1519 i_pic_width = (( p_vout->b_scale || (p_pic->i_width > i_vout_width)) ?
1520 i_vout_width : p_pic->i_width) & ~0xf;
1521 switch( p_pic->i_aspect_ratio )
1523 case AR_3_4_PICTURE:
1524 i_pic_height = i_pic_width * 3 / 4;
1526 case AR_16_9_PICTURE:
1527 i_pic_height = i_pic_width * 9 / 16;
1529 case AR_221_1_PICTURE:
1530 i_pic_height = i_pic_width * 100 / 221;
1532 case AR_SQUARE_PICTURE:
1534 i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1538 /* If picture dimensions using horizontal scaling are too large, use
1539 * vertical scaling. Since width must be a multiple of 16, height is
1540 * adjusted again after. */
1541 if( i_pic_height > i_vout_height )
1543 i_pic_height = ( p_vout->b_scale || (p_pic->i_height > i_vout_height)) ?
1544 i_vout_height : p_pic->i_height;
1545 switch( p_pic->i_aspect_ratio )
1547 case AR_3_4_PICTURE:
1548 i_pic_width = (i_pic_height * 4 / 3) & ~0xf;
1549 i_pic_height = i_pic_width * 3 / 4;
1551 case AR_16_9_PICTURE:
1552 i_pic_width = (i_pic_height * 16 / 9) & ~0xf;
1553 i_pic_height = i_pic_width * 9 / 16;
1555 case AR_221_1_PICTURE:
1556 i_pic_width = (i_pic_height * 221 / 100) & ~0xf;
1557 i_pic_height = i_pic_width * 100 / 221;
1559 case AR_SQUARE_PICTURE:
1561 i_pic_width = (p_pic->i_width * i_pic_height / p_pic->i_height) & ~0xf;
1562 i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1567 /* Set picture position */
1568 i_pic_x = (p_vout->i_width - i_pic_width) / 2;
1569 i_pic_y = (p_vout->i_height - i_pic_height) / 2;
1574 /* No picture: size is 0 */
1582 * Set new picture size - if it is smaller than the previous one, clear
1583 * around it. Since picture are centered, only their size is tested.
1585 if( (p_buffer->i_pic_width > i_pic_width) || (p_buffer->i_pic_height > i_pic_height) )
1587 i_old_pic_y = p_buffer->i_pic_y;
1588 i_old_pic_height = p_buffer->i_pic_height;
1589 p_buffer->i_pic_x = i_pic_x;
1590 p_buffer->i_pic_y = i_pic_y;
1591 p_buffer->i_pic_width = i_pic_width;
1592 p_buffer->i_pic_height = i_pic_height;
1593 SetBufferArea( p_vout, 0, i_old_pic_y, p_vout->i_width, i_old_pic_height );
1597 p_buffer->i_pic_x = i_pic_x;
1598 p_buffer->i_pic_y = i_pic_y;
1599 p_buffer->i_pic_width = i_pic_width;
1600 p_buffer->i_pic_height = i_pic_height;
1606 for( i_area = 0; i_area < p_buffer->i_areas; i_area++ )
1609 intf_DbgMsg("clearing picture %p area in buffer %d: %d-%d", p_pic,
1610 p_vout->i_buffer_index, p_buffer->pi_area_begin[i_area], p_buffer->pi_area_end[i_area] );
1612 i_data_size = (p_buffer->pi_area_end[i_area] - p_buffer->pi_area_begin[i_area] + 1) * p_vout->i_bytes_per_line;
1613 p_data = (u64*) (p_buffer->p_data + p_vout->i_bytes_per_line * p_buffer->pi_area_begin[i_area]);
1614 for( i_data_index = i_data_size / 256; i_data_index-- ; )
1616 /* Clear 256 bytes block */
1617 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1618 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1619 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1620 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1621 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1622 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1623 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1624 *p_data++ = 0; *p_data++ = 0; *p_data++ = 0; *p_data++ = 0;
1626 for( i_data_index = (i_data_size % 256) / 16; i_data_index--; )
1628 /* Clear remaining 16 bytes blocks */
1629 *p_data++ = 0; *p_data++ = 0;
1631 p_data8 = (byte_t *)p_data;
1632 for( i_data_index = i_data_size % 16; i_data_index--; )
1634 /* Clear remaining bytes */
1642 p_buffer->i_areas = 0;
1645 /*****************************************************************************
1646 * RenderPicture: render a picture
1647 *****************************************************************************
1648 * This function converts a picture from a video heap to a pixel-encoded image
1649 * and copies it to the current rendering buffer. No lock is required, since
1650 * the * rendered picture has been determined as existant, and will only be
1651 * destroyed by the vout thread later.
1652 *****************************************************************************/
1653 static void RenderPicture( vout_thread_t *p_vout, picture_t *p_pic )
1656 char psz_date[MSTRTIME_MAX_SIZE]; /* picture date */
1657 mtime_t render_time; /* picture rendering time */
1659 vout_buffer_t * p_buffer; /* rendering buffer */
1660 byte_t * p_pic_data; /* convertion destination */
1662 /* Get and set rendering information */
1663 p_buffer = &p_vout->p_buffer[ p_vout->i_buffer_index ];
1664 p_pic_data = p_buffer->p_data +
1665 p_buffer->i_pic_x * p_vout->i_bytes_per_pixel +
1666 p_buffer->i_pic_y * p_vout->i_bytes_per_line;
1668 render_time = mdate();
1674 * Choose appropriate rendering function and render picture
1676 switch( p_pic->i_type )
1678 case YUV_420_PICTURE:
1679 p_vout->yuv.p_Convert420( p_vout, p_pic_data,
1680 p_pic->p_y, p_pic->p_u, p_pic->p_v,
1681 p_pic->i_width, p_pic->i_height,
1682 p_buffer->i_pic_width, p_buffer->i_pic_height,
1683 p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1684 p_pic->i_matrix_coefficients );
1686 case YUV_422_PICTURE:
1687 p_vout->yuv.p_Convert422( p_vout, p_pic_data,
1688 p_pic->p_y, p_pic->p_u, p_pic->p_v,
1689 p_pic->i_width, p_pic->i_height,
1690 p_buffer->i_pic_width, p_buffer->i_pic_height,
1691 p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1692 p_pic->i_matrix_coefficients );
1694 case YUV_444_PICTURE:
1695 p_vout->yuv.p_Convert444( p_vout, p_pic_data,
1696 p_pic->p_y, p_pic->p_u, p_pic->p_v,
1697 p_pic->i_width, p_pic->i_height,
1698 p_buffer->i_pic_width, p_buffer->i_pic_height,
1699 p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1700 p_pic->i_matrix_coefficients );
1704 intf_DbgMsg("error: unknown picture type %d", p_pic->i_type );
1710 /* Print picture date and rendering time */
1711 intf_DbgMsg("picture %p rendered in buffer %d (%ld us), display date: %s", p_pic,
1712 p_vout->i_buffer_index, (long) (mdate() - render_time),
1713 mstrtime( psz_date, p_pic->date ));
1717 /*****************************************************************************
1718 * RenderPictureInfo: print additionnal information on a picture
1719 *****************************************************************************
1720 * This function will print information such as fps and other picture
1721 * dependant information.
1722 *****************************************************************************/
1723 static void RenderPictureInfo( vout_thread_t *p_vout, picture_t *p_pic )
1725 char psz_buffer[256]; /* string buffer */
1728 * Print FPS rate in upper right corner
1730 if( p_vout->c_fps_samples > VOUT_FPS_SAMPLES )
1732 long i_fps = VOUT_FPS_SAMPLES * 1000000 * 10 /
1733 ( p_vout->p_fps_sample[ (p_vout->c_fps_samples - 1)
1734 % VOUT_FPS_SAMPLES ] -
1735 p_vout->p_fps_sample[ p_vout->c_fps_samples
1736 % VOUT_FPS_SAMPLES ] );
1737 sprintf( psz_buffer, "%li.%i fps", i_fps / 10, (int)i_fps % 10 );
1738 Print( p_vout, 0, 0, RIGHT_RALIGN, TOP_RALIGN, psz_buffer );
1742 * Print frames count and loop time in upper left corner
1744 sprintf( psz_buffer, "%ld frames, render: %ldus",
1745 (long) p_vout->c_fps_samples, (long) p_vout->render_time );
1746 Print( p_vout, 0, 0, LEFT_RALIGN, TOP_RALIGN, psz_buffer );
1750 * Print picture information in lower right corner
1752 sprintf( psz_buffer, "%s picture %dx%d (%dx%d%+d%+d %s) -> %dx%d+%d+%d",
1753 (p_pic->i_type == YUV_420_PICTURE) ? "4:2:0" :
1754 ((p_pic->i_type == YUV_422_PICTURE) ? "4:2:2" :
1755 ((p_pic->i_type == YUV_444_PICTURE) ? "4:4:4" : "ukn-type")),
1756 p_pic->i_width, p_pic->i_height,
1757 p_pic->i_display_width, p_pic->i_display_height,
1758 p_pic->i_display_horizontal_offset, p_pic->i_display_vertical_offset,
1759 (p_pic->i_aspect_ratio == AR_SQUARE_PICTURE) ? "sq" :
1760 ((p_pic->i_aspect_ratio == AR_3_4_PICTURE) ? "4:3" :
1761 ((p_pic->i_aspect_ratio == AR_16_9_PICTURE) ? "16:9" :
1762 ((p_pic->i_aspect_ratio == AR_221_1_PICTURE) ? "2.21:1" : "ukn-ar" ))),
1763 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_width,
1764 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height,
1765 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_x,
1766 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y );
1767 Print( p_vout, 0, 0, RIGHT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1771 /*****************************************************************************
1772 * RenderSplash: render splash picture
1773 *****************************************************************************
1774 * This function will print something on the screen. It will return 0 if
1775 * nothing has been rendered, or 1 if something has been changed on the screen.
1776 * Note that if you absolutely want something to be printed, you will have
1777 * to force it by setting the last idle date to 0.
1778 * Unlike other rendering functions, this one calls the SetBufferPicture
1779 * function when needed.
1780 *****************************************************************************/
1781 int RenderSplash( vout_thread_t *p_vout )
1783 int i_x = 0, i_y = 0; /* text position */
1784 int i_width, i_height; /* text size */
1785 char *psz_text = "VideoLAN Client (" VERSION ")"; /* text to display */
1787 memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1788 p_vout->i_bytes_per_line * p_vout->i_height, 12);
1790 // SetBufferPicture( p_vout, NULL );
1791 vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1792 &i_width, &i_height );
1793 if( !Align( p_vout, &i_x, &i_y, i_width, i_height, CENTER_RALIGN, CENTER_RALIGN ) )
1795 vout_Print( p_vout->p_large_font,
1796 p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1797 i_x * p_vout->i_bytes_per_pixel + (i_y - 16 ) * p_vout->i_bytes_per_line,
1798 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1799 p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1800 WIDE_TEXT | OUTLINED_TEXT, psz_text, 100);
1801 SetBufferArea( p_vout, i_x, i_y, i_width, i_height);
1807 /*****************************************************************************
1808 * RenderIdle: render idle picture
1809 *****************************************************************************
1810 * This function will print something on the screen. It will return 0 if
1811 * nothing has been rendered, or 1 if something has been changed on the screen.
1812 * Note that if you absolutely want something to be printed, you will have
1813 * to force it by setting the last idle date to 0.
1814 * Unlike other rendering functions, this one calls the SetBufferPicture
1815 * function when needed.
1816 *****************************************************************************/
1817 int RenderIdle( vout_thread_t *p_vout )
1819 int i_x = 0, i_y = 0; /* text position */
1820 int i_width, i_height; /* text size */
1821 mtime_t current_date; /* current date */
1822 int i_amount = 0; /* amount to draw */
1823 char *psz_text = "Waiting for stream"; /* text to display */
1824 char *psz_wtext = "[................]";
1827 memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1828 p_vout->i_bytes_per_line * p_vout->i_height, 12);
1831 current_date = mdate();
1832 if( (current_date - p_vout->last_display_date) > VOUT_IDLE_DELAY
1833 // && (current_date - p_vout->last_idle_date) > VOUT_IDLE_DELAY
1836 SetBufferPicture( p_vout, NULL );
1837 vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1838 &i_width, &i_height );
1839 if( !Align( p_vout, &i_x, &i_y, i_width, i_height * 2, CENTER_RALIGN, CENTER_RALIGN ) )
1841 i_amount = (int) ((current_date - p_vout->last_display_date ) / 5000LL);
1842 vout_Print( p_vout->p_large_font,
1843 p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1844 i_x * p_vout->i_bytes_per_pixel + i_y * p_vout->i_bytes_per_line,
1845 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1846 p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1847 WIDE_TEXT | OUTLINED_TEXT, psz_text, (i_amount / 3 ) %110);
1849 vout_Print( p_vout->p_large_font,
1850 p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1851 i_x * p_vout->i_bytes_per_pixel + (i_y + 16) * p_vout->i_bytes_per_line,
1852 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1853 p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1854 WIDE_TEXT | OUTLINED_TEXT, psz_wtext, (i_amount/5)%110 );
1857 SetBufferArea( p_vout, i_x, i_y, i_width, i_height * 2 );
1864 /*****************************************************************************
1865 * RenderInfo: render additionnal information
1866 *****************************************************************************
1867 * This function renders information which do not depend on the current
1869 *****************************************************************************/
1870 static void RenderInfo( vout_thread_t *p_vout )
1873 char psz_buffer[256]; /* string buffer */
1874 int i_ready_pic = 0; /* ready pictures */
1875 int i_reserved_pic = 0; /* reserved pictures */
1876 int i_picture; /* picture index */
1881 * Print thread state in lower left corner
1883 for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
1885 switch( p_vout->p_picture[i_picture].i_status )
1887 case RESERVED_PICTURE:
1888 case RESERVED_DATED_PICTURE:
1889 case RESERVED_DISP_PICTURE:
1897 sprintf( psz_buffer, "pic: %d (%d/%d)/%d",
1898 p_vout->i_pictures, i_reserved_pic, i_ready_pic, VOUT_MAX_PICTURES );
1899 Print( p_vout, 0, 0, LEFT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1903 /*****************************************************************************
1904 * RenderSubPicture: render a subpicture
1905 *****************************************************************************
1906 * This function renders a sub picture unit.
1907 *****************************************************************************/
1908 static void RenderSubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
1910 p_vout_font_t p_font; /* text font */
1911 int i_width, i_height; /* subpicture dimensions */
1913 while( p_subpic != NULL )
1915 switch( p_subpic->i_type )
1917 case DVD_SUBPICTURE: /* DVD subpicture unit */
1918 /* test if the picture really has to be displayed */
1919 if( mdate() < p_subpic->begin_date )
1921 /* not yet, see you later */
1924 if( mdate() > p_subpic->end_date )
1926 /* too late, destroying the subpic */
1927 vout_DestroySubPicture( p_vout, p_subpic );
1930 vout_RenderSPU( &p_vout->p_buffer[ p_vout->i_buffer_index ],
1931 p_subpic, p_vout->i_bytes_per_pixel,
1932 p_vout->i_bytes_per_line );
1934 case TEXT_SUBPICTURE: /* single line text */
1935 /* Select default font if not specified */
1936 p_font = p_subpic->type.text.p_font;
1937 if( p_font == NULL )
1939 p_font = p_vout->p_default_font;
1942 /* Compute text size (width and height fields are ignored)
1944 vout_TextSize( p_font, p_subpic->type.text.i_style,
1945 p_subpic->p_data, &i_width, &i_height );
1946 if( !Align( p_vout, &p_subpic->i_x, &p_subpic->i_y,
1947 i_width, i_height, p_subpic->i_horizontal_align,
1948 p_subpic->i_vertical_align ) )
1951 p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1952 p_subpic->i_x * p_vout->i_bytes_per_pixel +
1953 p_subpic->i_y * p_vout->i_bytes_per_line,
1954 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1955 p_subpic->type.text.i_char_color,
1956 p_subpic->type.text.i_border_color,
1957 p_subpic->type.text.i_bg_color,
1958 p_subpic->type.text.i_style, p_subpic->p_data, 100 );
1959 SetBufferArea( p_vout, p_subpic->i_x, p_subpic->i_y,
1960 i_width, i_height );
1966 intf_DbgMsg( "error: unknown subpicture %p type %d",
1967 p_subpic, p_subpic->i_type );
1971 p_subpic = p_subpic->p_next;
1975 /*****************************************************************************
1976 * RenderInterface: render the interface
1977 *****************************************************************************
1978 * This function renders the interface, if any.
1979 *****************************************************************************/
1980 static void RenderInterface( vout_thread_t *p_vout )
1982 int i_height, i_text_height; /* total and text height */
1983 int i_width_1, i_width_2; /* text width */
1984 int i_byte; /* byte index */
1985 const char *psz_text_1 = "[1-9] Channel [i]nfo [c]olor [g/G]amma";
1986 const char *psz_text_2 = "[+/-] Volume [m]ute [s]caling [Q]uit";
1989 vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_1, &i_width_1, &i_height );
1990 vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_2, &i_width_2, &i_text_height );
1991 i_height += i_text_height;
1993 /* Render background */
1994 for( i_byte = (p_vout->i_height - i_height) * p_vout->i_bytes_per_line;
1995 i_byte < p_vout->i_height * p_vout->i_bytes_per_line;
1999 p_vout->p_buffer[ p_vout->i_buffer_index ].p_data[ i_byte ] = p_vout->i_blue_pixel;
2002 /* Render text, if not larger than screen */
2003 if( i_width_1 < p_vout->i_width )
2005 vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
2006 (p_vout->i_height - i_height) * p_vout->i_bytes_per_line,
2007 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2008 p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2009 OUTLINED_TEXT, psz_text_1, 100 );
2011 if( i_width_2 < p_vout->i_width )
2013 vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
2014 (p_vout->i_height - i_height + i_text_height) * p_vout->i_bytes_per_line,
2015 p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2016 p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2017 OUTLINED_TEXT, psz_text_2, 100 );
2020 /* Activate modified area */
2021 SetBufferArea( p_vout, 0, p_vout->i_height - i_height, p_vout->i_width, i_height );
2024 /*****************************************************************************
2025 * Manage: manage thread
2026 *****************************************************************************
2027 * This function will handle changes in thread configuration.
2028 *****************************************************************************/
2029 static int Manage( vout_thread_t *p_vout )
2032 if( p_vout->i_changes )
2034 intf_DbgMsg("changes: 0x%x (no display: 0x%x)", p_vout->i_changes,
2035 0 /* p_vout->i_changes & VOUT_NODISPLAY_CHANGE */ );
2039 /* On gamma or grayscale change, rebuild tables */
2040 if( p_vout->i_changes & (VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2043 if( vout_ResetYUV( p_vout ) )
2045 intf_ErrMsg("error: can't rebuild convertion tables");
2050 /* Clear changes flags which does not need management or have been
2052 p_vout->i_changes &= ~(VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2053 VOUT_YUV_CHANGE | VOUT_INFO_CHANGE |
2054 VOUT_INTF_CHANGE | VOUT_SCALE_CHANGE );
2056 /* Detect unauthorized changes */
2057 if( p_vout->i_changes )
2059 /* Some changes were not acknowledged by p_vout->p_sys_manage or this
2060 * function, it means they should not be authorized */
2061 intf_ErrMsg( "error: unauthorized changes in the video output thread" );
2068 /*****************************************************************************
2069 * Align: align a subpicture in the screen
2070 *****************************************************************************
2071 * This function is used for rendering text or subpictures. It returns non 0
2072 * it the final aera is not fully included in display area. Return coordinates
2074 *****************************************************************************/
2075 static int Align( vout_thread_t *p_vout, int *pi_x, int *pi_y,
2076 int i_width, int i_height, int i_h_align, int i_v_align )
2078 /* Align horizontally */
2082 *pi_x -= i_width / 2;
2085 *pi_x += (p_vout->i_width - i_width) / 2;
2091 *pi_x += p_vout->i_width - i_width;
2095 /* Align vertically */
2099 *pi_y -= i_height / 2;
2102 *pi_y += (p_vout->i_height - i_height) / 2;
2108 *pi_y += p_vout->i_height - i_height;
2110 case SUBTITLE_RALIGN:
2111 *pi_y += (p_vout->i_height + p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y +
2112 p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height - i_height) / 2;
2116 /* Return non 0 if clipping failed */
2117 return( (*pi_x < 0) || (*pi_y < 0) ||
2118 (*pi_x + i_width > p_vout->i_width) || (*pi_y + i_height > p_vout->i_height) );
2121 /*****************************************************************************
2122 * SetPalette: sets an 8 bpp palette
2123 *****************************************************************************
2124 * This function is just a prototype that does nothing. Architectures that
2125 * support palette allocation should override it.
2126 *****************************************************************************/
2127 static void SetPalette ( p_vout_thread_t p_vout, u16 *red,
2128 u16 *green, u16 *blue, u16 *transp )
2130 intf_ErrMsg( "SetPalette: method does not support palette changing" );