1 /*****************************************************************************
2 * vout_pictures.c : picture management functions
3 *****************************************************************************
4 * Copyright (C) 2000-2004 VideoLAN
7 * Authors: Vincent Seguin <seguin@via.ecp.fr>
8 * Samuel Hocevar <sam@zoy.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
28 #include <stdlib.h> /* free() */
29 #include <stdio.h> /* sprintf() */
30 #include <string.h> /* strerror() */
34 #include "vlc_video.h"
35 #include "video_output.h"
37 #include "vout_pictures.h"
39 /*****************************************************************************
41 *****************************************************************************/
42 static void CopyPicture( vout_thread_t *, picture_t *, picture_t * );
47 * Remove the reservation flag of a picture, which will cause it to be ready
48 * for display. The picture won't be displayed until vout_DatePicture has been
51 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
53 vlc_mutex_lock( &p_vout->picture_lock );
54 switch( p_pic->i_status )
56 case RESERVED_PICTURE:
57 p_pic->i_status = RESERVED_DISP_PICTURE;
59 case RESERVED_DATED_PICTURE:
60 p_pic->i_status = READY_PICTURE;
63 msg_Err( p_vout, "picture to display %p has invalid status %d",
64 p_pic, p_pic->i_status );
68 vlc_mutex_unlock( &p_vout->picture_lock );
74 * Remove the reservation flag of a picture, which will cause it to be ready
75 * for display. The picture won't be displayed until vout_DisplayPicture has
77 * \param p_vout The vout in question
78 * \param p_pic The picture to date
79 * \param date The date to display the picture
81 void vout_DatePicture( vout_thread_t *p_vout,
82 picture_t *p_pic, mtime_t date )
84 vlc_mutex_lock( &p_vout->picture_lock );
86 switch( p_pic->i_status )
88 case RESERVED_PICTURE:
89 p_pic->i_status = RESERVED_DATED_PICTURE;
91 case RESERVED_DISP_PICTURE:
92 p_pic->i_status = READY_PICTURE;
95 msg_Err( p_vout, "picture to date %p has invalid status %d",
96 p_pic, p_pic->i_status );
100 vlc_mutex_unlock( &p_vout->picture_lock );
104 * Allocate a picture in the video output heap.
106 * This function creates a reserved image in the video output heap.
107 * A null pointer is returned if the function fails. This method provides an
108 * already allocated zone of memory in the picture data fields.
109 * It needs locking since several pictures can be created by several producers
112 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
113 vlc_bool_t b_progressive,
114 vlc_bool_t b_top_field_first,
115 unsigned int i_nb_fields )
117 int i_pic; /* picture index */
119 picture_t * p_freepic = NULL; /* first free picture */
122 vlc_mutex_lock( &p_vout->picture_lock );
125 * Look for an empty place in the picture heap.
127 for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
129 p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
132 switch( p_pic->i_status )
134 case DESTROYED_PICTURE:
135 /* Memory will not be reallocated, and function can end
136 * immediately - this is the best possible case, since no
137 * memory allocation needs to be done */
138 p_pic->i_status = RESERVED_PICTURE;
139 p_pic->i_refcount = 0;
142 p_pic->b_progressive = b_progressive;
143 p_pic->i_nb_fields = i_nb_fields;
144 p_pic->b_top_field_first = b_top_field_first;
146 p_vout->i_heap_size++;
147 p_vout->render.i_last_used_pic =
148 ( p_vout->render.i_last_used_pic + i_pic + 1 )
150 vlc_mutex_unlock( &p_vout->picture_lock );
154 /* Picture is empty and ready for allocation */
155 p_vout->render.i_last_used_pic =
156 ( p_vout->render.i_last_used_pic + i_pic + 1 )
169 if( p_freepic != NULL )
171 vout_AllocatePicture( VLC_OBJECT(p_vout),
172 p_freepic, p_vout->render.i_chroma,
173 p_vout->render.i_width, p_vout->render.i_height,
174 p_vout->render.i_aspect );
176 if( p_freepic->i_planes )
178 /* Copy picture information, set some default values */
179 p_freepic->i_status = RESERVED_PICTURE;
180 p_freepic->i_type = MEMORY_PICTURE;
181 p_freepic->b_slow = 0;
183 p_freepic->i_refcount = 0;
184 p_freepic->b_force = 0;
186 p_freepic->b_progressive = b_progressive;
187 p_freepic->i_nb_fields = i_nb_fields;
188 p_freepic->b_top_field_first = b_top_field_first;
190 p_freepic->i_matrix_coefficients = 1;
192 p_vout->i_heap_size++;
196 /* Memory allocation failed : set picture as empty */
197 p_freepic->i_status = FREE_PICTURE;
200 msg_Err( p_vout, "picture allocation failed" );
203 vlc_mutex_unlock( &p_vout->picture_lock );
208 /* No free or destroyed picture could be found, but the decoder
209 * will try again in a while. */
210 vlc_mutex_unlock( &p_vout->picture_lock );
216 * Remove a permanent or reserved picture from the heap
218 * This function frees a previously reserved picture or a permanent
219 * picture. It is meant to be used when the construction of a picture aborted.
220 * Note that the picture will be destroyed even if it is linked !
222 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
224 vlc_mutex_lock( &p_vout->picture_lock );
227 /* Check if picture status is valid */
228 if( (p_pic->i_status != RESERVED_PICTURE) &&
229 (p_pic->i_status != RESERVED_DATED_PICTURE) &&
230 (p_pic->i_status != RESERVED_DISP_PICTURE) )
232 msg_Err( p_vout, "picture to destroy %p has invalid status %d",
233 p_pic, p_pic->i_status );
237 p_pic->i_status = DESTROYED_PICTURE;
238 p_vout->i_heap_size--;
240 vlc_mutex_unlock( &p_vout->picture_lock );
244 * Increment reference counter of a picture
246 * This function increments the reference counter of a picture in the video
247 * heap. It needs a lock since several producer threads can access the picture.
249 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
251 vlc_mutex_lock( &p_vout->picture_lock );
253 vlc_mutex_unlock( &p_vout->picture_lock );
257 * Decrement reference counter of a picture
259 * This function decrement the reference counter of a picture in the video heap
261 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
263 vlc_mutex_lock( &p_vout->picture_lock );
266 if( p_pic->i_refcount < 0 )
268 msg_Err( p_vout, "picture %p refcount is %i",
269 p_pic, p_pic->i_refcount );
270 p_pic->i_refcount = 0;
273 if( ( p_pic->i_refcount == 0 ) &&
274 ( p_pic->i_status == DISPLAYED_PICTURE ) )
276 p_pic->i_status = DESTROYED_PICTURE;
277 p_vout->i_heap_size--;
280 vlc_mutex_unlock( &p_vout->picture_lock );
286 * This function chooses whether the current picture needs to be copied
287 * before rendering, does the subpicture magic, and tells the video output
288 * thread which direct buffer needs to be displayed.
290 picture_t * vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
291 subpicture_t *p_subpic )
300 if( p_pic->i_type == DIRECT_PICTURE )
302 if( !p_vout->render.b_allow_modify_pics || p_pic->i_refcount ||
305 /* Picture is in a direct buffer and is still in use,
306 * we need to copy it to another direct buffer before
307 * displaying it if there are subtitles. */
308 if( p_subpic != NULL )
310 /* We have subtitles. First copy the picture to
311 * the spare direct buffer, then render the
313 CopyPicture( p_vout, p_pic, PP_OUTPUTPICTURE[0] );
315 vout_RenderSubPictures( p_vout, PP_OUTPUTPICTURE[0],
318 return PP_OUTPUTPICTURE[0];
321 /* No subtitles, picture is in a directbuffer so
322 * we can display it directly even if it is still
327 /* Picture is in a direct buffer but isn't used by the
328 * decoder. We can safely render subtitles on it and
330 vout_RenderSubPictures( p_vout, p_pic, p_pic, p_subpic );
335 /* Not a direct buffer. We either need to copy it to a direct buffer,
336 * or render it if the chroma isn't the same. */
337 if( p_vout->b_direct )
339 /* Picture is not in a direct buffer, but is exactly the
340 * same size as the direct buffers. A memcpy() is enough,
341 * then render the subtitles. */
343 if( PP_OUTPUTPICTURE[0]->pf_lock )
344 if( PP_OUTPUTPICTURE[0]->pf_lock( p_vout, PP_OUTPUTPICTURE[0] ) )
346 if( PP_OUTPUTPICTURE[0]->pf_unlock )
347 PP_OUTPUTPICTURE[0]->pf_unlock( p_vout, PP_OUTPUTPICTURE[0] );
352 CopyPicture( p_vout, p_pic, PP_OUTPUTPICTURE[0] );
353 vout_RenderSubPictures( p_vout, PP_OUTPUTPICTURE[0], p_pic, p_subpic );
355 if( PP_OUTPUTPICTURE[0]->pf_unlock )
356 PP_OUTPUTPICTURE[0]->pf_unlock( p_vout, PP_OUTPUTPICTURE[0] );
358 return PP_OUTPUTPICTURE[0];
361 /* Picture is not in a direct buffer, and needs to be converted to
362 * another size/chroma. Then the subtitles need to be rendered as
363 * well. This usually means software YUV, or hardware YUV with a
364 * different chroma. */
366 if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
368 /* The picture buffer is in slow memory. We'll use
369 * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
370 * one for subpictures rendering. */
371 picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
372 if( p_tmp_pic->i_status == FREE_PICTURE )
374 vout_AllocatePicture( VLC_OBJECT(p_vout),
375 p_tmp_pic, p_vout->output.i_chroma,
376 p_vout->output.i_width,
377 p_vout->output.i_height,
378 p_vout->output.i_aspect );
379 p_tmp_pic->i_type = MEMORY_PICTURE;
380 p_tmp_pic->i_status = RESERVED_PICTURE;
383 /* Convert image to the first direct buffer */
384 p_vout->chroma.pf_convert( p_vout, p_pic, p_tmp_pic );
386 /* Render subpictures on the first direct buffer */
387 vout_RenderSubPictures( p_vout, p_tmp_pic, p_tmp_pic, p_subpic );
389 if( p_vout->p_picture[0].pf_lock )
390 if( p_vout->p_picture[0].pf_lock( p_vout, &p_vout->p_picture[0] ) )
393 CopyPicture( p_vout, p_tmp_pic, &p_vout->p_picture[0] );
397 if( p_vout->p_picture[0].pf_lock )
398 if( p_vout->p_picture[0].pf_lock( p_vout, &p_vout->p_picture[0] ) )
401 /* Convert image to the first direct buffer */
402 p_vout->chroma.pf_convert( p_vout, p_pic, &p_vout->p_picture[0] );
404 /* Render subpictures on the first direct buffer */
405 vout_RenderSubPictures( p_vout, &p_vout->p_picture[0],
406 &p_vout->p_picture[0], p_subpic );
409 if( p_vout->p_picture[0].pf_unlock )
410 p_vout->p_picture[0].pf_unlock( p_vout, &p_vout->p_picture[0] );
412 return &p_vout->p_picture[0];
416 * Calculate image window coordinates
418 * This function will be accessed by plugins. It calculates the relative
419 * position of the output window and the image window.
421 void vout_PlacePicture( vout_thread_t *p_vout,
422 unsigned int i_width, unsigned int i_height,
423 unsigned int *pi_x, unsigned int *pi_y,
424 unsigned int *pi_width, unsigned int *pi_height )
426 if( (i_width <= 0) || (i_height <=0) )
428 *pi_width = *pi_height = *pi_x = *pi_y = 0;
433 if( p_vout->b_scale )
436 *pi_height = i_height;
440 *pi_width = __MIN( i_width, p_vout->render.i_width );
441 *pi_height = __MIN( i_height, p_vout->render.i_height );
444 if( VOUT_ASPECT_FACTOR * *pi_width / *pi_height < p_vout->render.i_aspect )
446 *pi_width = *pi_height * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
450 *pi_height = *pi_width * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
453 if( *pi_width > i_width )
456 *pi_height = VOUT_ASPECT_FACTOR * *pi_width / p_vout->render.i_aspect;
459 if( *pi_height > i_height )
461 *pi_height = i_height;
462 *pi_width = *pi_height * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
465 switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
467 case VOUT_ALIGN_LEFT:
470 case VOUT_ALIGN_RIGHT:
471 *pi_x = i_width - *pi_width;
474 *pi_x = ( i_width - *pi_width ) / 2;
477 switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
482 case VOUT_ALIGN_BOTTOM:
483 *pi_y = i_height - *pi_height;
486 *pi_y = ( i_height - *pi_height ) / 2;
491 * Allocate a new picture in the heap.
493 * This function allocates a fake direct buffer in memory, which can be
494 * used exactly like a video buffer. The video output thread then manages
495 * how it gets displayed.
497 void vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
498 vlc_fourcc_t i_chroma,
499 int i_width, int i_height, int i_aspect )
501 int i_bytes, i_index, i_width_aligned, i_height_aligned;
503 /* Make sure the real dimensions are a multiple of 16 */
504 i_width_aligned = (i_width + 15) >> 4 << 4;
505 i_height_aligned = (i_height + 15) >> 4 << 4;
507 vout_InitPicture( p_this, p_pic, i_chroma,
508 i_width, i_height, i_aspect );
510 /* Calculate how big the new image should be */
511 i_bytes = p_pic->format.i_bits_per_pixel *
512 i_width_aligned * i_height_aligned / 8;
514 p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
516 if( p_pic->p_data == NULL )
522 /* Fill the p_pixels field for each plane */
523 p_pic->p[ 0 ].p_pixels = p_pic->p_data;
525 for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
527 p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels
528 + p_pic->p[i_index-1].i_lines
529 * p_pic->p[i_index-1].i_pitch;
534 * Initialise the video format fields given chroma/size.
536 * This function initializes all the video_frame_format_t fields given the
537 * static properties of a picture (chroma and size).
538 * \param p_format Pointer to the format structure to initialize
539 * \param i_chroma Chroma to set
540 * \param i_width Width to set
541 * \param i_height Height to set
542 * \param i_aspect Aspect ratio
544 void vout_InitFormat( video_frame_format_t *p_format, vlc_fourcc_t i_chroma,
545 int i_width, int i_height, int i_aspect )
547 p_format->i_chroma = i_chroma;
548 p_format->i_width = p_format->i_visible_width = i_width;
549 p_format->i_height = p_format->i_visible_height = i_height;
550 p_format->i_x_offset = p_format->i_y_offset = 0;
551 p_format->i_aspect = i_aspect;
554 /* Assume we have square pixels */
555 if( i_width && i_height )
556 p_format->i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
558 p_format->i_aspect = 0;
564 p_format->i_bits_per_pixel = 32;
567 p_format->i_bits_per_pixel = 24;
572 p_format->i_bits_per_pixel = 16;
573 p_format->i_bits_per_pixel = 16;
579 p_format->i_bits_per_pixel = 12;
583 p_format->i_bits_per_pixel = 9;
586 p_format->i_bits_per_pixel = 8;
589 p_format->i_bits_per_pixel = 8;
593 p_format->i_bits_per_pixel = 32;
596 /* FIXME: Should be 24 here but x11 and our chroma conversion
597 * routines assume 32. */
599 p_format->i_bits_per_pixel = 24;
601 p_format->i_bits_per_pixel = 32;
606 p_format->i_bits_per_pixel = 16;
609 p_format->i_bits_per_pixel = 8;
612 p_format->i_bits_per_pixel = 0;
618 * Initialise the picture_t fields given chroma/size.
620 * This function initializes most of the picture_t fields given a chroma and
621 * size. It makes the assumption that stride == width.
622 * \param p_this The calling object
623 * \param p_pic Pointer to the picture to initialize
624 * \param i_chroma The chroma fourcc to set
625 * \param i_width The width of the picture
626 * \param i_height The height of the picture
627 * \param i_aspect The aspect ratio of the picture
629 void vout_InitPicture( vlc_object_t *p_this, picture_t *p_pic,
630 vlc_fourcc_t i_chroma,
631 int i_width, int i_height, int i_aspect )
633 int i_index, i_width_aligned, i_height_aligned;
635 /* Store default values */
636 for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
638 p_pic->p[i_index].p_pixels = NULL;
639 p_pic->p[i_index].i_pixel_pitch = 1;
642 p_pic->pf_release = 0;
644 p_pic->pf_unlock = 0;
645 p_pic->i_refcount = 0;
647 vout_InitFormat( &p_pic->format, i_chroma, i_width, i_height, i_aspect );
649 /* Make sure the real dimensions are a multiple of 16 */
650 i_width_aligned = (i_width + 15) >> 4 << 4;
651 i_height_aligned = (i_height + 15) >> 4 << 4;
653 /* Calculate coordinates */
657 p_pic->p[ Y_PLANE ].i_lines = i_height;
658 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
659 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
660 p_pic->p[ U_PLANE ].i_lines = i_height;
661 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
662 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
663 p_pic->p[ V_PLANE ].i_lines = i_height;
664 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
665 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
671 p_pic->p[ Y_PLANE ].i_lines = i_height;
672 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
673 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
674 p_pic->p[ U_PLANE ].i_lines = i_height / 4;
675 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
676 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
677 p_pic->p[ V_PLANE ].i_lines = i_height / 4;
678 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
679 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
686 p_pic->p[ Y_PLANE ].i_lines = i_height;
687 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
688 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
689 p_pic->p[ U_PLANE ].i_lines = i_height / 2;
690 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
691 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
692 p_pic->p[ V_PLANE ].i_lines = i_height / 2;
693 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
694 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
699 p_pic->p[ Y_PLANE ].i_lines = i_height;
700 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
701 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
702 p_pic->p[ U_PLANE ].i_lines = i_height;
703 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
704 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
705 p_pic->p[ V_PLANE ].i_lines = i_height;
706 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
707 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
712 p_pic->p[ Y_PLANE ].i_lines = i_height;
713 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
714 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
715 p_pic->p[ U_PLANE ].i_lines = i_height;
716 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
717 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
718 p_pic->p[ V_PLANE ].i_lines = i_height;
719 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
720 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
725 p_pic->p[ Y_PLANE ].i_lines = i_height;
726 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
727 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
728 p_pic->p[ U_PLANE ].i_lines = i_height;
729 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
730 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
731 p_pic->p[ V_PLANE ].i_lines = i_height;
732 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
733 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
734 p_pic->p[ A_PLANE ].i_lines = i_height;
735 p_pic->p[ A_PLANE ].i_pitch = i_width_aligned;
736 p_pic->p[ A_PLANE ].i_visible_pitch = i_width;
741 p_pic->p->i_lines = i_height;
742 p_pic->p->i_pitch = i_width_aligned;
743 p_pic->p->i_visible_pitch = i_width;
744 p_pic->p->i_pixel_pitch = 8;
749 p_pic->p->i_lines = i_height;
750 p_pic->p->i_pitch = i_width_aligned;
751 p_pic->p->i_visible_pitch = i_width;
752 p_pic->p->i_pixel_pitch = 4;
758 p_pic->p->i_lines = i_height;
759 p_pic->p->i_pitch = i_width_aligned * 2;
760 p_pic->p->i_visible_pitch = i_width * 2;
761 p_pic->p->i_pixel_pitch = 4;
766 p_pic->p->i_lines = i_height;
767 p_pic->p->i_pitch = i_width_aligned;
768 p_pic->p->i_visible_pitch = i_width;
769 p_pic->p->i_pixel_pitch = 1;
774 p_pic->p->i_lines = i_height;
775 p_pic->p->i_pitch = i_width_aligned * 2;
776 p_pic->p->i_visible_pitch = i_width * 2;
777 p_pic->p->i_pixel_pitch = 2;
782 p_pic->p->i_lines = i_height;
783 p_pic->p->i_pitch = i_width_aligned * 2;
784 p_pic->p->i_visible_pitch = i_width * 2;
785 p_pic->p->i_pixel_pitch = 2;
790 p_pic->p->i_lines = i_height;
792 /* FIXME: Should be 3 here but x11 and our chroma conversion
793 * routines assume 4. */
795 p_pic->p->i_pitch = i_width_aligned * 3;
796 p_pic->p->i_visible_pitch = i_width * 3;
797 p_pic->p->i_pixel_pitch = 3;
799 p_pic->p->i_pitch = i_width_aligned * 4;
800 p_pic->p->i_visible_pitch = i_width * 4;
801 p_pic->p->i_pixel_pitch = 4;
807 p_pic->p->i_lines = i_height;
808 p_pic->p->i_pitch = i_width_aligned * 4;
809 p_pic->p->i_visible_pitch = i_width * 4;
810 p_pic->p->i_pixel_pitch = 4;
815 msg_Err( p_this, "unknown chroma type 0x%.8x (%4.4s)",
816 i_chroma, (char*)&i_chroma );
823 * Compare two chroma values
825 * This function returns 1 if the two fourcc values given as argument are
826 * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
828 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
830 /* If they are the same, they are the same ! */
831 if( i_chroma == i_amorhc )
836 /* Check for equivalence classes */
884 /* Following functions are local */
886 /*****************************************************************************
887 * CopyPicture: copy a picture to another one
888 *****************************************************************************
889 * This function takes advantage of the image format, and reduces the
890 * number of calls to memcpy() to the minimum. Source and destination
891 * images must have same width (hence i_visible_pitch), height, and chroma.
892 *****************************************************************************/
893 static void CopyPicture( vout_thread_t * p_vout,
894 picture_t *p_src, picture_t *p_dest )
898 for( i = 0; i < p_src->i_planes ; i++ )
900 if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
902 /* There are margins, but with the same width : perfect ! */
903 p_vout->p_vlc->pf_memcpy(
904 p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
905 p_src->p[i].i_pitch * p_src->p[i].i_lines );
909 /* We need to proceed line by line */
910 uint8_t *p_in = p_src->p[i].p_pixels;
911 uint8_t *p_out = p_dest->p[i].p_pixels;
914 for( i_line = p_src->p[i].i_lines; i_line--; )
916 p_vout->p_vlc->pf_memcpy( p_out, p_in,
917 p_src->p[i].i_visible_pitch );
918 p_in += p_src->p[i].i_pitch;
919 p_out += p_dest->p[i].i_pitch;
923 p_dest->date = p_src->date;