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 *****************************************************************************/
33 #include <vlc_common.h>
36 #include <vlc_filter.h>
37 #include "vout_pictures.h"
44 * Remove the reservation flag of a picture, which will cause it to be ready
45 * for display. The picture won't be displayed until vout_DatePicture has been
48 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
50 vlc_mutex_lock( &p_vout->picture_lock );
51 switch( p_pic->i_status )
53 case RESERVED_PICTURE:
54 p_pic->i_status = RESERVED_DISP_PICTURE;
56 case RESERVED_DATED_PICTURE:
57 p_pic->i_status = READY_PICTURE;
60 msg_Err( p_vout, "picture to display %p has invalid status %d",
61 p_pic, p_pic->i_status );
65 vlc_mutex_unlock( &p_vout->picture_lock );
71 * Remove the reservation flag of a picture, which will cause it to be ready
72 * for display. The picture won't be displayed until vout_DisplayPicture has
74 * \param p_vout The vout in question
75 * \param p_pic The picture to date
76 * \param date The date to display the picture
78 void vout_DatePicture( vout_thread_t *p_vout,
79 picture_t *p_pic, mtime_t date )
81 vlc_mutex_lock( &p_vout->picture_lock );
83 switch( p_pic->i_status )
85 case RESERVED_PICTURE:
86 p_pic->i_status = RESERVED_DATED_PICTURE;
88 case RESERVED_DISP_PICTURE:
89 p_pic->i_status = READY_PICTURE;
92 msg_Err( p_vout, "picture to date %p has invalid status %d",
93 p_pic, p_pic->i_status );
97 vlc_mutex_unlock( &p_vout->picture_lock );
101 * Allocate a picture in the video output heap.
103 * This function creates a reserved image in the video output heap.
104 * A null pointer is returned if the function fails. This method provides an
105 * already allocated zone of memory in the picture data fields.
106 * It needs locking since several pictures can be created by several producers
109 int vout_CountPictureAvailable( vout_thread_t *p_vout )
114 vlc_mutex_lock( &p_vout->picture_lock );
115 for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
117 picture_t *p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1) % I_RENDERPICTURES];
119 switch( p_pic->i_status )
121 case DESTROYED_PICTURE:
133 vlc_mutex_unlock( &p_vout->picture_lock );
138 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
140 bool b_top_field_first,
141 unsigned int i_nb_fields )
143 int i_pic; /* picture index */
145 picture_t * p_freepic = NULL; /* first free picture */
148 vlc_mutex_lock( &p_vout->picture_lock );
151 * Look for an empty place in the picture heap.
153 for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
155 p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
158 switch( p_pic->i_status )
160 case DESTROYED_PICTURE:
161 /* Memory will not be reallocated, and function can end
162 * immediately - this is the best possible case, since no
163 * memory allocation needs to be done */
164 p_pic->i_status = RESERVED_PICTURE;
165 p_pic->i_refcount = 0;
168 p_pic->b_progressive = b_progressive;
169 p_pic->i_nb_fields = i_nb_fields;
170 p_pic->b_top_field_first = b_top_field_first;
172 p_vout->i_heap_size++;
173 p_vout->render.i_last_used_pic =
174 ( p_vout->render.i_last_used_pic + i_pic + 1 )
176 vlc_mutex_unlock( &p_vout->picture_lock );
180 /* Picture is empty and ready for allocation */
181 p_vout->render.i_last_used_pic =
182 ( p_vout->render.i_last_used_pic + i_pic + 1 )
195 if( p_freepic != NULL )
197 vout_AllocatePicture( VLC_OBJECT(p_vout),
198 p_freepic, p_vout->render.i_chroma,
199 p_vout->render.i_width, p_vout->render.i_height,
200 p_vout->render.i_aspect );
202 if( p_freepic->i_planes )
204 /* Copy picture information, set some default values */
205 p_freepic->i_status = RESERVED_PICTURE;
206 p_freepic->i_type = MEMORY_PICTURE;
207 p_freepic->b_slow = 0;
209 p_freepic->i_refcount = 0;
210 p_freepic->b_force = 0;
212 p_freepic->b_progressive = b_progressive;
213 p_freepic->i_nb_fields = i_nb_fields;
214 p_freepic->b_top_field_first = b_top_field_first;
216 p_freepic->i_matrix_coefficients = 1;
218 p_vout->i_heap_size++;
222 /* Memory allocation failed : set picture as empty */
223 p_freepic->i_status = FREE_PICTURE;
226 msg_Err( p_vout, "picture allocation failed" );
229 vlc_mutex_unlock( &p_vout->picture_lock );
234 /* No free or destroyed picture could be found, but the decoder
235 * will try again in a while. */
236 vlc_mutex_unlock( &p_vout->picture_lock );
242 * Remove a permanent or reserved picture from the heap
244 * This function frees a previously reserved picture or a permanent
245 * picture. It is meant to be used when the construction of a picture aborted.
246 * Note that the picture will be destroyed even if it is linked !
248 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
250 vlc_mutex_lock( &p_vout->picture_lock );
253 /* Check if picture status is valid */
254 if( (p_pic->i_status != RESERVED_PICTURE) &&
255 (p_pic->i_status != RESERVED_DATED_PICTURE) &&
256 (p_pic->i_status != RESERVED_DISP_PICTURE) )
258 msg_Err( p_vout, "picture to destroy %p has invalid status %d",
259 p_pic, p_pic->i_status );
263 p_pic->i_status = DESTROYED_PICTURE;
264 p_vout->i_heap_size--;
266 vlc_mutex_unlock( &p_vout->picture_lock );
270 * Increment reference counter of a picture
272 * This function increments the reference counter of a picture in the video
273 * heap. It needs a lock since several producer threads can access the picture.
275 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
277 vlc_mutex_lock( &p_vout->picture_lock );
279 vlc_mutex_unlock( &p_vout->picture_lock );
283 * Decrement reference counter of a picture
285 * This function decrement the reference counter of a picture in the video heap
287 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
289 vlc_mutex_lock( &p_vout->picture_lock );
292 if( ( p_pic->i_refcount == 0 ) &&
293 ( p_pic->i_status == DISPLAYED_PICTURE ) )
295 p_pic->i_status = DESTROYED_PICTURE;
296 p_vout->i_heap_size--;
299 vlc_mutex_unlock( &p_vout->picture_lock );
302 static int vout_LockPicture( vout_thread_t *p_vout, picture_t *p_picture )
304 if( p_picture->pf_lock )
305 return p_picture->pf_lock( p_vout, p_picture );
308 static void vout_UnlockPicture( vout_thread_t *p_vout, picture_t *p_picture )
310 if( p_picture->pf_unlock )
311 p_picture->pf_unlock( p_vout, p_picture );
317 * This function chooses whether the current picture needs to be copied
318 * before rendering, does the subpicture magic, and tells the video output
319 * thread which direct buffer needs to be displayed.
321 picture_t * vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
322 subpicture_t *p_subpic )
324 int i_scale_width, i_scale_height;
332 i_scale_width = p_vout->fmt_out.i_visible_width * 1000 /
333 p_vout->fmt_in.i_visible_width;
334 i_scale_height = p_vout->fmt_out.i_visible_height * 1000 /
335 p_vout->fmt_in.i_visible_height;
337 if( p_pic->i_type == DIRECT_PICTURE )
339 /* Picture is in a direct buffer. */
341 if( p_subpic != NULL )
343 /* We have subtitles. First copy the picture to
344 * the spare direct buffer, then render the
346 if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
349 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
351 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
352 PP_OUTPUTPICTURE[0], p_pic, p_subpic,
353 i_scale_width, i_scale_height );
355 vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
357 return PP_OUTPUTPICTURE[0];
360 /* No subtitles, picture is in a directbuffer so
361 * we can display it directly (even if it is still
366 /* Not a direct buffer. We either need to copy it to a direct buffer,
367 * or render it if the chroma isn't the same. */
368 if( p_vout->b_direct )
370 /* Picture is not in a direct buffer, but is exactly the
371 * same size as the direct buffers. A memcpy() is enough,
372 * then render the subtitles. */
374 if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
377 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
378 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
379 PP_OUTPUTPICTURE[0], p_pic,
380 p_subpic, i_scale_width, i_scale_height );
382 vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
384 return PP_OUTPUTPICTURE[0];
387 /* Picture is not in a direct buffer, and needs to be converted to
388 * another size/chroma. Then the subtitles need to be rendered as
389 * well. This usually means software YUV, or hardware YUV with a
390 * different chroma. */
392 if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
394 /* The picture buffer is in slow memory. We'll use
395 * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
396 * one for subpictures rendering. */
397 picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
398 if( p_tmp_pic->i_status == FREE_PICTURE )
400 vout_AllocatePicture( VLC_OBJECT(p_vout),
401 p_tmp_pic, p_vout->fmt_out.i_chroma,
402 p_vout->fmt_out.i_width,
403 p_vout->fmt_out.i_height,
404 p_vout->fmt_out.i_aspect );
405 p_tmp_pic->i_type = MEMORY_PICTURE;
406 p_tmp_pic->i_status = RESERVED_PICTURE;
407 /* some modules (such as blend) needs to know the extra information in picture heap */
408 p_tmp_pic->p_heap = &p_vout->output;
411 /* Convert image to the first direct buffer */
412 p_vout->p_chroma->p_owner = (filter_owner_sys_t *)p_tmp_pic;
413 p_vout->p_chroma->pf_video_filter( p_vout->p_chroma, p_pic );
415 /* Render subpictures on the first direct buffer */
416 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_tmp_pic,
418 i_scale_width, i_scale_height );
420 if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
423 vout_CopyPicture( p_vout, &p_vout->p_picture[0], p_tmp_pic );
427 if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
430 /* Convert image to the first direct buffer */
431 p_vout->p_chroma->p_owner = (filter_owner_sys_t *)&p_vout->p_picture[0];
432 p_vout->p_chroma->pf_video_filter( p_vout->p_chroma, p_pic );
434 /* Render subpictures on the first direct buffer */
435 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
436 &p_vout->p_picture[0], &p_vout->p_picture[0],
437 p_subpic, i_scale_width, i_scale_height );
440 vout_UnlockPicture( p_vout, &p_vout->p_picture[0] );
442 return &p_vout->p_picture[0];
446 * Calculate image window coordinates
448 * This function will be accessed by plugins. It calculates the relative
449 * position of the output window and the image window.
451 void vout_PlacePicture( vout_thread_t *p_vout,
452 unsigned int i_width, unsigned int i_height,
453 unsigned int *pi_x, unsigned int *pi_y,
454 unsigned int *pi_width, unsigned int *pi_height )
456 if( (i_width <= 0) || (i_height <=0) )
458 *pi_width = *pi_height = *pi_x = *pi_y = 0;
462 if( p_vout->b_scale )
465 *pi_height = i_height;
469 *pi_width = __MIN( i_width, p_vout->fmt_in.i_visible_width );
470 *pi_height = __MIN( i_height, p_vout->fmt_in.i_visible_height );
473 int64_t i_scaled_width = p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
474 *pi_height / p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
475 int64_t i_scaled_height = p_vout->fmt_in.i_visible_height * (int64_t)p_vout->fmt_in.i_sar_den *
476 *pi_width / p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
478 if( i_scaled_width <= 0 || i_scaled_height <= 0 )
480 msg_Warn( p_vout, "ignoring broken aspect ratio" );
481 i_scaled_width = *pi_width;
482 i_scaled_height = *pi_height;
485 if( i_scaled_width > *pi_width )
486 *pi_height = i_scaled_height;
488 *pi_width = i_scaled_width;
490 switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
492 case VOUT_ALIGN_LEFT:
495 case VOUT_ALIGN_RIGHT:
496 *pi_x = i_width - *pi_width;
499 *pi_x = ( i_width - *pi_width ) / 2;
502 switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
507 case VOUT_ALIGN_BOTTOM:
508 *pi_y = i_height - *pi_height;
511 *pi_y = ( i_height - *pi_height ) / 2;
516 * Allocate a new picture in the heap.
518 * This function allocates a fake direct buffer in memory, which can be
519 * used exactly like a video buffer. The video output thread then manages
520 * how it gets displayed.
522 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
523 vlc_fourcc_t i_chroma,
524 int i_width, int i_height, int i_aspect )
526 int i_bytes, i_index, i_width_aligned, i_height_aligned;
528 /* Make sure the real dimensions are a multiple of 16 */
529 i_width_aligned = (i_width + 15) >> 4 << 4;
530 i_height_aligned = (i_height + 15) >> 4 << 4;
532 if( vout_InitPicture( p_this, p_pic, i_chroma,
533 i_width, i_height, i_aspect ) != VLC_SUCCESS )
539 /* Calculate how big the new image should be */
540 i_bytes = p_pic->format.i_bits_per_pixel *
541 i_width_aligned * i_height_aligned / 8;
543 p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
545 if( p_pic->p_data == NULL )
551 /* Fill the p_pixels field for each plane */
552 p_pic->p[ 0 ].p_pixels = p_pic->p_data;
554 for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
556 p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
557 p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
564 * Initialise the video format fields given chroma/size.
566 * This function initializes all the video_frame_format_t fields given the
567 * static properties of a picture (chroma and size).
568 * \param p_format Pointer to the format structure to initialize
569 * \param i_chroma Chroma to set
570 * \param i_width Width to set
571 * \param i_height Height to set
572 * \param i_aspect Aspect ratio
574 void vout_InitFormat( video_frame_format_t *p_format, vlc_fourcc_t i_chroma,
575 int i_width, int i_height, int i_aspect )
577 p_format->i_chroma = i_chroma;
578 p_format->i_width = p_format->i_visible_width = i_width;
579 p_format->i_height = p_format->i_visible_height = i_height;
580 p_format->i_x_offset = p_format->i_y_offset = 0;
581 p_format->i_aspect = i_aspect;
584 /* Assume we have square pixels */
585 if( i_width && i_height )
586 p_format->i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
588 p_format->i_aspect = 0;
594 p_format->i_bits_per_pixel = 32;
598 p_format->i_bits_per_pixel = 24;
604 p_format->i_bits_per_pixel = 16;
608 p_format->i_bits_per_pixel = 16;
615 p_format->i_bits_per_pixel = 12;
619 p_format->i_bits_per_pixel = 9;
622 p_format->i_bits_per_pixel = 8;
625 p_format->i_bits_per_pixel = 8;
630 p_format->i_bits_per_pixel = 32;
633 p_format->i_bits_per_pixel = 24;
637 p_format->i_bits_per_pixel = 16;
640 p_format->i_bits_per_pixel = 8;
646 p_format->i_bits_per_pixel = 8;
650 p_format->i_bits_per_pixel = 0;
656 * Initialise the picture_t fields given chroma/size.
658 * This function initializes most of the picture_t fields given a chroma and
659 * size. It makes the assumption that stride == width.
660 * \param p_this The calling object
661 * \param p_pic Pointer to the picture to initialize
662 * \param i_chroma The chroma fourcc to set
663 * \param i_width The width of the picture
664 * \param i_height The height of the picture
665 * \param i_aspect The aspect ratio of the picture
667 int __vout_InitPicture( vlc_object_t *p_this, picture_t *p_pic,
668 vlc_fourcc_t i_chroma,
669 int i_width, int i_height, int i_aspect )
671 int i_index, i_width_aligned, i_height_aligned;
673 /* Store default values */
674 for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
676 p_pic->p[i_index].p_pixels = NULL;
677 p_pic->p[i_index].i_pixel_pitch = 1;
680 p_pic->pf_release = NULL;
681 p_pic->pf_lock = NULL;
682 p_pic->pf_unlock = NULL;
683 p_pic->i_refcount = 0;
686 p_pic->i_qstride = 0;
689 vout_InitFormat( &p_pic->format, i_chroma, i_width, i_height, i_aspect );
691 /* Make sure the real dimensions are a multiple of 16 */
692 i_width_aligned = (i_width + 15) >> 4 << 4;
693 i_height_aligned = (i_height + 15) >> 4 << 4;
695 /* Calculate coordinates */
699 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
700 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
701 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
702 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
703 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
704 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
705 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
706 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
707 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
708 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
709 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
710 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
716 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
717 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
718 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
719 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
720 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 4;
721 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 4;
722 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
723 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
724 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 4;
725 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 4;
726 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
727 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
735 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
736 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
737 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
738 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
739 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
740 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
741 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
742 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
743 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
744 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
745 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
746 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
752 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
753 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
754 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
755 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
756 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
757 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
758 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
759 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
760 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
761 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
762 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
763 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
769 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
770 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
771 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
772 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
773 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
774 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
775 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
776 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
777 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
778 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
779 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
780 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
786 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
787 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
788 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
789 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
790 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
791 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
792 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
793 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
794 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
795 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
796 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
797 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
802 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
803 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
804 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
805 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
806 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
807 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
808 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
809 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
810 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
811 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
812 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
813 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
814 p_pic->p[ A_PLANE ].i_lines = i_height_aligned;
815 p_pic->p[ A_PLANE ].i_visible_lines = i_height;
816 p_pic->p[ A_PLANE ].i_pitch = i_width_aligned;
817 p_pic->p[ A_PLANE ].i_visible_pitch = i_width;
822 p_pic->p->i_lines = i_height_aligned;
823 p_pic->p->i_visible_lines = i_height;
824 p_pic->p->i_pitch = i_width_aligned;
825 p_pic->p->i_visible_pitch = i_width;
826 p_pic->p->i_pixel_pitch = 8;
831 p_pic->p->i_lines = i_height_aligned;
832 p_pic->p->i_visible_lines = i_height;
833 p_pic->p->i_pitch = i_width_aligned;
834 p_pic->p->i_visible_pitch = i_width;
835 p_pic->p->i_pixel_pitch = 4;
841 p_pic->p->i_lines = i_height_aligned;
842 p_pic->p->i_visible_lines = i_height;
843 p_pic->p->i_pitch = i_width_aligned * 2;
844 p_pic->p->i_visible_pitch = i_width * 2;
845 p_pic->p->i_pixel_pitch = 4;
850 p_pic->p->i_lines = i_height_aligned;
851 p_pic->p->i_visible_lines = i_height;
852 p_pic->p->i_pitch = i_width_aligned;
853 p_pic->p->i_visible_pitch = i_width;
854 p_pic->p->i_pixel_pitch = 1;
859 p_pic->p->i_lines = i_height_aligned;
860 p_pic->p->i_visible_lines = i_height;
861 p_pic->p->i_pitch = i_width_aligned * 2;
862 p_pic->p->i_visible_pitch = i_width * 2;
863 p_pic->p->i_pixel_pitch = 2;
868 p_pic->p->i_lines = i_height_aligned;
869 p_pic->p->i_visible_lines = i_height;
870 p_pic->p->i_pitch = i_width_aligned * 2;
871 p_pic->p->i_visible_pitch = i_width * 2;
872 p_pic->p->i_pixel_pitch = 2;
877 p_pic->p->i_lines = i_height_aligned;
878 p_pic->p->i_visible_lines = i_height;
879 p_pic->p->i_pitch = i_width_aligned * 3;
880 p_pic->p->i_visible_pitch = i_width * 3;
881 p_pic->p->i_pixel_pitch = 3;
887 p_pic->p->i_lines = i_height_aligned;
888 p_pic->p->i_visible_lines = i_height;
889 p_pic->p->i_pitch = i_width_aligned * 4;
890 p_pic->p->i_visible_pitch = i_width * 4;
891 p_pic->p->i_pixel_pitch = 4;
898 p_pic->p->i_lines = i_height_aligned;
899 p_pic->p->i_visible_lines = i_height;
900 p_pic->p->i_pitch = i_width_aligned;
901 p_pic->p->i_visible_pitch = i_width;
902 p_pic->p->i_pixel_pitch = 1;
908 msg_Err( p_this, "unknown chroma type 0x%.8x (%4.4s)",
909 i_chroma, (char*)&i_chroma );
918 * Compare two chroma values
920 * This function returns 1 if the two fourcc values given as argument are
921 * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
923 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
925 /* If they are the same, they are the same ! */
926 if( i_chroma == i_amorhc )
931 /* Check for equivalence classes */
993 /*****************************************************************************
994 * vout_CopyPicture: copy a picture to another one
995 *****************************************************************************
996 * This function takes advantage of the image format, and reduces the
997 * number of calls to memcpy() to the minimum. Source and destination
998 * images must have same width (hence i_visible_pitch), height, and chroma.
999 *****************************************************************************/
1000 void __vout_CopyPicture( vlc_object_t *p_this,
1001 picture_t *p_dest, picture_t *p_src )
1004 picture_Copy( p_dest, p_src );
1007 /*****************************************************************************
1009 *****************************************************************************/
1010 static void PictureReleaseCallback( picture_t *p_picture )
1012 if( --p_picture->i_refcount > 0 )
1014 picture_Delete( p_picture );
1016 /*****************************************************************************
1018 *****************************************************************************/
1019 picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
1021 picture_t *p_picture = malloc( sizeof(*p_picture) );
1026 memset( p_picture, 0, sizeof(*p_picture) );
1027 if( __vout_AllocatePicture( NULL, p_picture,
1028 i_chroma, i_width, i_height, i_aspect ) )
1034 p_picture->i_refcount = 1;
1035 p_picture->pf_release = PictureReleaseCallback;
1036 p_picture->i_status = RESERVED_PICTURE;
1041 /*****************************************************************************
1043 *****************************************************************************/
1044 void picture_Delete( picture_t *p_picture )
1046 assert( p_picture && p_picture->i_refcount == 0 );
1048 free( p_picture->p_data_orig );
1049 free( p_picture->p_sys );
1053 /*****************************************************************************
1055 *****************************************************************************/
1056 void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
1060 for( i = 0; i < p_src->i_planes ; i++ )
1061 plane_CopyPixels( p_dst->p+i, p_src->p+i );
1064 void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
1066 const unsigned i_width = __MIN( p_dst->i_visible_pitch,
1067 p_src->i_visible_pitch );
1068 const unsigned i_height = __MIN( p_dst->i_visible_lines,
1069 p_src->i_visible_lines );
1071 if( p_src->i_pitch == p_dst->i_pitch )
1073 /* There are margins, but with the same width : perfect ! */
1074 vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
1075 p_src->i_pitch * i_height );
1079 /* We need to proceed line by line */
1080 uint8_t *p_in = p_src->p_pixels;
1081 uint8_t *p_out = p_dst->p_pixels;
1087 for( i_line = i_height; i_line--; )
1089 vlc_memcpy( p_out, p_in, i_width );
1090 p_in += p_src->i_pitch;
1091 p_out += p_dst->i_pitch;
1096 /*****************************************************************************
1098 *****************************************************************************/