1 /*****************************************************************************
2 * vout_pictures.c : picture management functions
3 *****************************************************************************
4 * Copyright (C) 2000-2004 the VideoLAN team
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
36 #include "vout_pictures.h"
41 * Remove the reservation flag of a picture, which will cause it to be ready
42 * for display. The picture won't be displayed until vout_DatePicture has been
45 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
47 vlc_mutex_lock( &p_vout->picture_lock );
48 switch( p_pic->i_status )
50 case RESERVED_PICTURE:
51 p_pic->i_status = RESERVED_DISP_PICTURE;
53 case RESERVED_DATED_PICTURE:
54 p_pic->i_status = READY_PICTURE;
57 msg_Err( p_vout, "picture to display %p has invalid status %d",
58 p_pic, p_pic->i_status );
62 vlc_mutex_unlock( &p_vout->picture_lock );
68 * Remove the reservation flag of a picture, which will cause it to be ready
69 * for display. The picture won't be displayed until vout_DisplayPicture has
71 * \param p_vout The vout in question
72 * \param p_pic The picture to date
73 * \param date The date to display the picture
75 void vout_DatePicture( vout_thread_t *p_vout,
76 picture_t *p_pic, mtime_t date )
78 vlc_mutex_lock( &p_vout->picture_lock );
80 switch( p_pic->i_status )
82 case RESERVED_PICTURE:
83 p_pic->i_status = RESERVED_DATED_PICTURE;
85 case RESERVED_DISP_PICTURE:
86 p_pic->i_status = READY_PICTURE;
89 msg_Err( p_vout, "picture to date %p has invalid status %d",
90 p_pic, p_pic->i_status );
94 vlc_mutex_unlock( &p_vout->picture_lock );
98 * Allocate a picture in the video output heap.
100 * This function creates a reserved image in the video output heap.
101 * A null pointer is returned if the function fails. This method provides an
102 * already allocated zone of memory in the picture data fields.
103 * It needs locking since several pictures can be created by several producers
106 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
107 vlc_bool_t b_progressive,
108 vlc_bool_t b_top_field_first,
109 unsigned int i_nb_fields )
111 int i_pic; /* picture index */
113 picture_t * p_freepic = NULL; /* first free picture */
116 vlc_mutex_lock( &p_vout->picture_lock );
119 * Look for an empty place in the picture heap.
121 for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
123 p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
126 switch( p_pic->i_status )
128 case DESTROYED_PICTURE:
129 /* Memory will not be reallocated, and function can end
130 * immediately - this is the best possible case, since no
131 * memory allocation needs to be done */
132 p_pic->i_status = RESERVED_PICTURE;
133 p_pic->i_refcount = 0;
136 p_pic->b_progressive = b_progressive;
137 p_pic->i_nb_fields = i_nb_fields;
138 p_pic->b_top_field_first = b_top_field_first;
140 p_vout->i_heap_size++;
141 p_vout->render.i_last_used_pic =
142 ( p_vout->render.i_last_used_pic + i_pic + 1 )
144 vlc_mutex_unlock( &p_vout->picture_lock );
148 /* Picture is empty and ready for allocation */
149 p_vout->render.i_last_used_pic =
150 ( p_vout->render.i_last_used_pic + i_pic + 1 )
163 if( p_freepic != NULL )
165 vout_AllocatePicture( VLC_OBJECT(p_vout),
166 p_freepic, p_vout->render.i_chroma,
167 p_vout->render.i_width, p_vout->render.i_height,
168 p_vout->render.i_aspect );
170 if( p_freepic->i_planes )
172 /* Copy picture information, set some default values */
173 p_freepic->i_status = RESERVED_PICTURE;
174 p_freepic->i_type = MEMORY_PICTURE;
175 p_freepic->b_slow = 0;
177 p_freepic->i_refcount = 0;
178 p_freepic->b_force = 0;
180 p_freepic->b_progressive = b_progressive;
181 p_freepic->i_nb_fields = i_nb_fields;
182 p_freepic->b_top_field_first = b_top_field_first;
184 p_freepic->i_matrix_coefficients = 1;
186 p_vout->i_heap_size++;
190 /* Memory allocation failed : set picture as empty */
191 p_freepic->i_status = FREE_PICTURE;
194 msg_Err( p_vout, "picture allocation failed" );
197 vlc_mutex_unlock( &p_vout->picture_lock );
202 /* No free or destroyed picture could be found, but the decoder
203 * will try again in a while. */
204 vlc_mutex_unlock( &p_vout->picture_lock );
210 * Remove a permanent or reserved picture from the heap
212 * This function frees a previously reserved picture or a permanent
213 * picture. It is meant to be used when the construction of a picture aborted.
214 * Note that the picture will be destroyed even if it is linked !
216 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
218 vlc_mutex_lock( &p_vout->picture_lock );
221 /* Check if picture status is valid */
222 if( (p_pic->i_status != RESERVED_PICTURE) &&
223 (p_pic->i_status != RESERVED_DATED_PICTURE) &&
224 (p_pic->i_status != RESERVED_DISP_PICTURE) )
226 msg_Err( p_vout, "picture to destroy %p has invalid status %d",
227 p_pic, p_pic->i_status );
231 p_pic->i_status = DESTROYED_PICTURE;
232 p_vout->i_heap_size--;
234 vlc_mutex_unlock( &p_vout->picture_lock );
238 * Increment reference counter of a picture
240 * This function increments the reference counter of a picture in the video
241 * heap. It needs a lock since several producer threads can access the picture.
243 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
245 vlc_mutex_lock( &p_vout->picture_lock );
247 vlc_mutex_unlock( &p_vout->picture_lock );
251 * Decrement reference counter of a picture
253 * This function decrement the reference counter of a picture in the video heap
255 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
257 vlc_mutex_lock( &p_vout->picture_lock );
260 if( ( p_pic->i_refcount == 0 ) &&
261 ( p_pic->i_status == DISPLAYED_PICTURE ) )
263 p_pic->i_status = DESTROYED_PICTURE;
264 p_vout->i_heap_size--;
267 vlc_mutex_unlock( &p_vout->picture_lock );
273 * This function chooses whether the current picture needs to be copied
274 * before rendering, does the subpicture magic, and tells the video output
275 * thread which direct buffer needs to be displayed.
277 picture_t * vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
278 subpicture_t *p_subpic )
280 int i_scale_width, i_scale_height;
288 i_scale_width = p_vout->fmt_out.i_visible_width * 1000 /
289 p_vout->fmt_in.i_visible_width;
290 i_scale_height = p_vout->fmt_out.i_visible_height * 1000 /
291 p_vout->fmt_in.i_visible_height;
293 if( p_pic->i_type == DIRECT_PICTURE )
295 if( !p_vout->render.b_allow_modify_pics || p_pic->i_refcount ||
298 /* Picture is in a direct buffer and is still in use,
299 * we need to copy it to another direct buffer before
300 * displaying it if there are subtitles. */
301 if( p_subpic != NULL )
303 /* We have subtitles. First copy the picture to
304 * the spare direct buffer, then render the
306 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
308 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
309 PP_OUTPUTPICTURE[0], p_pic, p_subpic,
310 i_scale_width, i_scale_height );
312 return PP_OUTPUTPICTURE[0];
315 /* No subtitles, picture is in a directbuffer so
316 * we can display it directly even if it is still
321 /* Picture is in a direct buffer but isn't used by the
322 * decoder. We can safely render subtitles on it and
324 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_pic, p_pic,
325 p_subpic, i_scale_width, i_scale_height );
330 /* Not a direct buffer. We either need to copy it to a direct buffer,
331 * or render it if the chroma isn't the same. */
332 if( p_vout->b_direct )
334 /* Picture is not in a direct buffer, but is exactly the
335 * same size as the direct buffers. A memcpy() is enough,
336 * then render the subtitles. */
338 if( PP_OUTPUTPICTURE[0]->pf_lock )
339 if( PP_OUTPUTPICTURE[0]->pf_lock( p_vout, PP_OUTPUTPICTURE[0] ) )
342 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
343 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
344 PP_OUTPUTPICTURE[0], p_pic,
345 p_subpic, i_scale_width, i_scale_height );
347 if( PP_OUTPUTPICTURE[0]->pf_unlock )
348 PP_OUTPUTPICTURE[0]->pf_unlock( p_vout, PP_OUTPUTPICTURE[0] );
350 return PP_OUTPUTPICTURE[0];
353 /* Picture is not in a direct buffer, and needs to be converted to
354 * another size/chroma. Then the subtitles need to be rendered as
355 * well. This usually means software YUV, or hardware YUV with a
356 * different chroma. */
358 if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
360 /* The picture buffer is in slow memory. We'll use
361 * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
362 * one for subpictures rendering. */
363 picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
364 if( p_tmp_pic->i_status == FREE_PICTURE )
366 vout_AllocatePicture( VLC_OBJECT(p_vout),
367 p_tmp_pic, p_vout->fmt_out.i_chroma,
368 p_vout->fmt_out.i_width,
369 p_vout->fmt_out.i_height,
370 p_vout->fmt_out.i_aspect );
371 p_tmp_pic->i_type = MEMORY_PICTURE;
372 p_tmp_pic->i_status = RESERVED_PICTURE;
373 /* some modules (such as blend) needs to know the extra information in picture heap */
374 p_tmp_pic->p_heap = &p_vout->output;
377 /* Convert image to the first direct buffer */
378 p_vout->chroma.pf_convert( p_vout, p_pic, p_tmp_pic );
380 /* Render subpictures on the first direct buffer */
381 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_tmp_pic,
383 i_scale_width, i_scale_height );
385 if( p_vout->p_picture[0].pf_lock )
386 if( p_vout->p_picture[0].pf_lock( p_vout, &p_vout->p_picture[0] ) )
389 vout_CopyPicture( p_vout, &p_vout->p_picture[0], p_tmp_pic );
393 if( p_vout->p_picture[0].pf_lock )
394 if( p_vout->p_picture[0].pf_lock( p_vout, &p_vout->p_picture[0] ) )
397 /* Convert image to the first direct buffer */
398 p_vout->chroma.pf_convert( p_vout, p_pic, &p_vout->p_picture[0] );
400 /* Render subpictures on the first direct buffer */
401 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
402 &p_vout->p_picture[0], &p_vout->p_picture[0],
403 p_subpic, i_scale_width, i_scale_height );
406 if( p_vout->p_picture[0].pf_unlock )
407 p_vout->p_picture[0].pf_unlock( p_vout, &p_vout->p_picture[0] );
409 return &p_vout->p_picture[0];
413 * Calculate image window coordinates
415 * This function will be accessed by plugins. It calculates the relative
416 * position of the output window and the image window.
418 void vout_PlacePicture( vout_thread_t *p_vout,
419 unsigned int i_width, unsigned int i_height,
420 unsigned int *pi_x, unsigned int *pi_y,
421 unsigned int *pi_width, unsigned int *pi_height )
423 if( (i_width <= 0) || (i_height <=0) )
425 *pi_width = *pi_height = *pi_x = *pi_y = 0;
429 if( p_vout->b_scale )
432 *pi_height = i_height;
436 *pi_width = __MIN( i_width, p_vout->fmt_in.i_visible_width );
437 *pi_height = __MIN( i_height, p_vout->fmt_in.i_visible_height );
440 if( p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
441 *pi_height / p_vout->fmt_in.i_visible_height /
442 p_vout->fmt_in.i_sar_den > *pi_width )
444 *pi_height = p_vout->fmt_in.i_visible_height *
445 (int64_t)p_vout->fmt_in.i_sar_den * *pi_width /
446 p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
450 *pi_width = p_vout->fmt_in.i_visible_width *
451 (int64_t)p_vout->fmt_in.i_sar_num * *pi_height /
452 p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
455 switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
457 case VOUT_ALIGN_LEFT:
460 case VOUT_ALIGN_RIGHT:
461 *pi_x = i_width - *pi_width;
464 *pi_x = ( i_width - *pi_width ) / 2;
467 switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
472 case VOUT_ALIGN_BOTTOM:
473 *pi_y = i_height - *pi_height;
476 *pi_y = ( i_height - *pi_height ) / 2;
481 * Allocate a new picture in the heap.
483 * This function allocates a fake direct buffer in memory, which can be
484 * used exactly like a video buffer. The video output thread then manages
485 * how it gets displayed.
487 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
488 vlc_fourcc_t i_chroma,
489 int i_width, int i_height, int i_aspect )
491 int i_bytes, i_index, i_width_aligned, i_height_aligned;
493 /* Make sure the real dimensions are a multiple of 16 */
494 i_width_aligned = (i_width + 15) >> 4 << 4;
495 i_height_aligned = (i_height + 15) >> 4 << 4;
497 if( vout_InitPicture( p_this, p_pic, i_chroma,
498 i_width, i_height, i_aspect ) != VLC_SUCCESS )
504 /* Calculate how big the new image should be */
505 i_bytes = p_pic->format.i_bits_per_pixel *
506 i_width_aligned * i_height_aligned / 8;
508 p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
510 if( p_pic->p_data == NULL )
516 /* Fill the p_pixels field for each plane */
517 p_pic->p[ 0 ].p_pixels = p_pic->p_data;
519 for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
521 p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
522 p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
529 * Initialise the video format fields given chroma/size.
531 * This function initializes all the video_frame_format_t fields given the
532 * static properties of a picture (chroma and size).
533 * \param p_format Pointer to the format structure to initialize
534 * \param i_chroma Chroma to set
535 * \param i_width Width to set
536 * \param i_height Height to set
537 * \param i_aspect Aspect ratio
539 void vout_InitFormat( video_frame_format_t *p_format, vlc_fourcc_t i_chroma,
540 int i_width, int i_height, int i_aspect )
542 p_format->i_chroma = i_chroma;
543 p_format->i_width = p_format->i_visible_width = i_width;
544 p_format->i_height = p_format->i_visible_height = i_height;
545 p_format->i_x_offset = p_format->i_y_offset = 0;
546 p_format->i_aspect = i_aspect;
549 /* Assume we have square pixels */
550 if( i_width && i_height )
551 p_format->i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
553 p_format->i_aspect = 0;
559 p_format->i_bits_per_pixel = 32;
563 p_format->i_bits_per_pixel = 24;
569 p_format->i_bits_per_pixel = 16;
576 p_format->i_bits_per_pixel = 12;
580 p_format->i_bits_per_pixel = 9;
583 p_format->i_bits_per_pixel = 8;
586 p_format->i_bits_per_pixel = 8;
591 p_format->i_bits_per_pixel = 32;
594 p_format->i_bits_per_pixel = 24;
598 p_format->i_bits_per_pixel = 16;
601 p_format->i_bits_per_pixel = 8;
605 p_format->i_bits_per_pixel = 8;
609 p_format->i_bits_per_pixel = 0;
615 * Initialise the picture_t fields given chroma/size.
617 * This function initializes most of the picture_t fields given a chroma and
618 * size. It makes the assumption that stride == width.
619 * \param p_this The calling object
620 * \param p_pic Pointer to the picture to initialize
621 * \param i_chroma The chroma fourcc to set
622 * \param i_width The width of the picture
623 * \param i_height The height of the picture
624 * \param i_aspect The aspect ratio of the picture
626 int __vout_InitPicture( vlc_object_t *p_this, picture_t *p_pic,
627 vlc_fourcc_t i_chroma,
628 int i_width, int i_height, int i_aspect )
630 int i_index, i_width_aligned, i_height_aligned;
632 /* Store default values */
633 for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
635 p_pic->p[i_index].p_pixels = NULL;
636 p_pic->p[i_index].i_pixel_pitch = 1;
639 p_pic->pf_release = 0;
641 p_pic->pf_unlock = 0;
642 p_pic->i_refcount = 0;
644 vout_InitFormat( &p_pic->format, i_chroma, i_width, i_height, i_aspect );
646 /* Make sure the real dimensions are a multiple of 16 */
647 i_width_aligned = (i_width + 15) >> 4 << 4;
648 i_height_aligned = (i_height + 15) >> 4 << 4;
650 /* Calculate coordinates */
654 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
655 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
656 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
657 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
658 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
659 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
660 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
661 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
662 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
663 p_pic->p[ V_PLANE ].i_visible_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_aligned;
672 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
673 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
674 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
675 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 4;
676 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 4;
677 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
678 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
679 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 4;
680 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 4;
681 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
682 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
690 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
691 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
692 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
693 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
694 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
695 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
696 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
697 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
698 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
699 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
700 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
701 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
707 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
708 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
709 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
710 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
711 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
712 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
713 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
714 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
715 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
716 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
717 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
718 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
724 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
725 p_pic->p[ Y_PLANE ].i_visible_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_aligned;
729 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
730 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
731 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
732 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
733 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
734 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
735 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
740 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
741 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
742 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
743 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
744 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
745 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
746 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
747 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
748 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
749 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
750 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
751 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
752 p_pic->p[ A_PLANE ].i_lines = i_height_aligned;
753 p_pic->p[ A_PLANE ].i_visible_lines = i_height;
754 p_pic->p[ A_PLANE ].i_pitch = i_width_aligned;
755 p_pic->p[ A_PLANE ].i_visible_pitch = i_width;
760 p_pic->p->i_lines = i_height_aligned;
761 p_pic->p->i_visible_lines = i_height;
762 p_pic->p->i_pitch = i_width_aligned;
763 p_pic->p->i_visible_pitch = i_width;
764 p_pic->p->i_pixel_pitch = 8;
769 p_pic->p->i_lines = i_height_aligned;
770 p_pic->p->i_visible_lines = i_height;
771 p_pic->p->i_pitch = i_width_aligned;
772 p_pic->p->i_visible_pitch = i_width;
773 p_pic->p->i_pixel_pitch = 4;
779 p_pic->p->i_lines = i_height_aligned;
780 p_pic->p->i_visible_lines = i_height;
781 p_pic->p->i_pitch = i_width_aligned * 2;
782 p_pic->p->i_visible_pitch = i_width * 2;
783 p_pic->p->i_pixel_pitch = 4;
788 p_pic->p->i_lines = i_height_aligned;
789 p_pic->p->i_visible_lines = i_height;
790 p_pic->p->i_pitch = i_width_aligned;
791 p_pic->p->i_visible_pitch = i_width;
792 p_pic->p->i_pixel_pitch = 1;
797 p_pic->p->i_lines = i_height_aligned;
798 p_pic->p->i_visible_lines = i_height;
799 p_pic->p->i_pitch = i_width_aligned * 2;
800 p_pic->p->i_visible_pitch = i_width * 2;
801 p_pic->p->i_pixel_pitch = 2;
806 p_pic->p->i_lines = i_height_aligned;
807 p_pic->p->i_visible_lines = i_height;
808 p_pic->p->i_pitch = i_width_aligned * 2;
809 p_pic->p->i_visible_pitch = i_width * 2;
810 p_pic->p->i_pixel_pitch = 2;
815 p_pic->p->i_lines = i_height_aligned;
816 p_pic->p->i_visible_lines = i_height;
817 p_pic->p->i_pitch = i_width_aligned * 3;
818 p_pic->p->i_visible_pitch = i_width * 3;
819 p_pic->p->i_pixel_pitch = 3;
825 p_pic->p->i_lines = i_height_aligned;
826 p_pic->p->i_visible_lines = i_height;
827 p_pic->p->i_pitch = i_width_aligned * 4;
828 p_pic->p->i_visible_pitch = i_width * 4;
829 p_pic->p->i_pixel_pitch = 4;
834 p_pic->p->i_lines = i_height_aligned;
835 p_pic->p->i_visible_lines = i_height;
836 p_pic->p->i_pitch = i_width_aligned;
837 p_pic->p->i_visible_pitch = i_width;
838 p_pic->p->i_pixel_pitch = 1;
843 msg_Err( p_this, "unknown chroma type 0x%.8x (%4.4s)",
844 i_chroma, (char*)&i_chroma );
853 * Compare two chroma values
855 * This function returns 1 if the two fourcc values given as argument are
856 * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
858 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
860 /* If they are the same, they are the same ! */
861 if( i_chroma == i_amorhc )
866 /* Check for equivalence classes */
914 /*****************************************************************************
915 * vout_CopyPicture: copy a picture to another one
916 *****************************************************************************
917 * This function takes advantage of the image format, and reduces the
918 * number of calls to memcpy() to the minimum. Source and destination
919 * images must have same width (hence i_visible_pitch), height, and chroma.
920 *****************************************************************************/
921 void __vout_CopyPicture( vlc_object_t *p_this,
922 picture_t *p_dest, picture_t *p_src )
926 for( i = 0; i < p_src->i_planes ; i++ )
928 if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
930 /* There are margins, but with the same width : perfect ! */
931 p_this->p_libvlc->pf_memcpy(
932 p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
933 p_src->p[i].i_pitch * p_src->p[i].i_visible_lines );
937 /* We need to proceed line by line */
938 uint8_t *p_in = p_src->p[i].p_pixels;
940 uint8_t *p_out = p_dest->p[i].p_pixels;
944 for( i_line = p_src->p[i].i_visible_lines; i_line--; )
946 p_this->p_libvlc->pf_memcpy( p_out, p_in,
947 p_src->p[i].i_visible_pitch );
948 p_in += p_src->p[i].i_pitch;
949 p_out += p_dest->p[i].i_pitch;
954 p_dest->date = p_src->date;
955 p_dest->b_force = p_src->b_force;
956 p_dest->i_nb_fields = p_src->i_nb_fields;
957 p_dest->b_progressive = p_src->b_progressive;
958 p_dest->b_top_field_first = p_src->b_top_field_first;