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 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
111 bool b_top_field_first,
112 unsigned int i_nb_fields )
114 int i_pic; /* picture index */
116 picture_t * p_freepic = NULL; /* first free picture */
119 vlc_mutex_lock( &p_vout->picture_lock );
122 * Look for an empty place in the picture heap.
124 for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
126 p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
129 switch( p_pic->i_status )
131 case DESTROYED_PICTURE:
132 /* Memory will not be reallocated, and function can end
133 * immediately - this is the best possible case, since no
134 * memory allocation needs to be done */
135 p_pic->i_status = RESERVED_PICTURE;
136 p_pic->i_refcount = 0;
139 p_pic->b_progressive = b_progressive;
140 p_pic->i_nb_fields = i_nb_fields;
141 p_pic->b_top_field_first = b_top_field_first;
143 p_vout->i_heap_size++;
144 p_vout->render.i_last_used_pic =
145 ( p_vout->render.i_last_used_pic + i_pic + 1 )
147 vlc_mutex_unlock( &p_vout->picture_lock );
151 /* Picture is empty and ready for allocation */
152 p_vout->render.i_last_used_pic =
153 ( p_vout->render.i_last_used_pic + i_pic + 1 )
166 if( p_freepic != NULL )
168 vout_AllocatePicture( VLC_OBJECT(p_vout),
169 p_freepic, p_vout->render.i_chroma,
170 p_vout->render.i_width, p_vout->render.i_height,
171 p_vout->render.i_aspect );
173 if( p_freepic->i_planes )
175 /* Copy picture information, set some default values */
176 p_freepic->i_status = RESERVED_PICTURE;
177 p_freepic->i_type = MEMORY_PICTURE;
178 p_freepic->b_slow = 0;
180 p_freepic->i_refcount = 0;
181 p_freepic->b_force = 0;
183 p_freepic->b_progressive = b_progressive;
184 p_freepic->i_nb_fields = i_nb_fields;
185 p_freepic->b_top_field_first = b_top_field_first;
187 p_freepic->i_matrix_coefficients = 1;
189 p_vout->i_heap_size++;
193 /* Memory allocation failed : set picture as empty */
194 p_freepic->i_status = FREE_PICTURE;
197 msg_Err( p_vout, "picture allocation failed" );
200 vlc_mutex_unlock( &p_vout->picture_lock );
205 /* No free or destroyed picture could be found, but the decoder
206 * will try again in a while. */
207 vlc_mutex_unlock( &p_vout->picture_lock );
213 * Remove a permanent or reserved picture from the heap
215 * This function frees a previously reserved picture or a permanent
216 * picture. It is meant to be used when the construction of a picture aborted.
217 * Note that the picture will be destroyed even if it is linked !
219 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
221 vlc_mutex_lock( &p_vout->picture_lock );
224 /* Check if picture status is valid */
225 if( (p_pic->i_status != RESERVED_PICTURE) &&
226 (p_pic->i_status != RESERVED_DATED_PICTURE) &&
227 (p_pic->i_status != RESERVED_DISP_PICTURE) )
229 msg_Err( p_vout, "picture to destroy %p has invalid status %d",
230 p_pic, p_pic->i_status );
234 p_pic->i_status = DESTROYED_PICTURE;
235 p_vout->i_heap_size--;
237 vlc_mutex_unlock( &p_vout->picture_lock );
241 * Increment reference counter of a picture
243 * This function increments the reference counter of a picture in the video
244 * heap. It needs a lock since several producer threads can access the picture.
246 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
248 vlc_mutex_lock( &p_vout->picture_lock );
250 vlc_mutex_unlock( &p_vout->picture_lock );
254 * Decrement reference counter of a picture
256 * This function decrement the reference counter of a picture in the video heap
258 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
260 vlc_mutex_lock( &p_vout->picture_lock );
263 if( ( p_pic->i_refcount == 0 ) &&
264 ( p_pic->i_status == DISPLAYED_PICTURE ) )
266 p_pic->i_status = DESTROYED_PICTURE;
267 p_vout->i_heap_size--;
270 vlc_mutex_unlock( &p_vout->picture_lock );
276 * This function chooses whether the current picture needs to be copied
277 * before rendering, does the subpicture magic, and tells the video output
278 * thread which direct buffer needs to be displayed.
280 picture_t * vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
281 subpicture_t *p_subpic )
283 int i_scale_width, i_scale_height;
291 i_scale_width = p_vout->fmt_out.i_visible_width * 1000 /
292 p_vout->fmt_in.i_visible_width;
293 i_scale_height = p_vout->fmt_out.i_visible_height * 1000 /
294 p_vout->fmt_in.i_visible_height;
296 if( p_pic->i_type == DIRECT_PICTURE )
298 if( !p_vout->render.b_allow_modify_pics || p_pic->i_refcount ||
301 /* Picture is in a direct buffer and is still in use,
302 * we need to copy it to another direct buffer before
303 * displaying it if there are subtitles. */
304 if( p_subpic != NULL )
306 /* We have subtitles. First copy the picture to
307 * the spare direct buffer, then render the
309 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
311 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
312 PP_OUTPUTPICTURE[0], p_pic, p_subpic,
313 i_scale_width, i_scale_height );
315 return PP_OUTPUTPICTURE[0];
318 /* No subtitles, picture is in a directbuffer so
319 * we can display it directly even if it is still
324 /* Picture is in a direct buffer but isn't used by the
325 * decoder. We can safely render subtitles on it and
327 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_pic, p_pic,
328 p_subpic, i_scale_width, i_scale_height );
333 /* Not a direct buffer. We either need to copy it to a direct buffer,
334 * or render it if the chroma isn't the same. */
335 if( p_vout->b_direct )
337 /* Picture is not in a direct buffer, but is exactly the
338 * same size as the direct buffers. A memcpy() is enough,
339 * then render the subtitles. */
341 if( PP_OUTPUTPICTURE[0]->pf_lock )
342 if( PP_OUTPUTPICTURE[0]->pf_lock( p_vout, PP_OUTPUTPICTURE[0] ) )
345 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
346 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
347 PP_OUTPUTPICTURE[0], p_pic,
348 p_subpic, i_scale_width, i_scale_height );
350 if( PP_OUTPUTPICTURE[0]->pf_unlock )
351 PP_OUTPUTPICTURE[0]->pf_unlock( p_vout, PP_OUTPUTPICTURE[0] );
353 return PP_OUTPUTPICTURE[0];
356 /* Picture is not in a direct buffer, and needs to be converted to
357 * another size/chroma. Then the subtitles need to be rendered as
358 * well. This usually means software YUV, or hardware YUV with a
359 * different chroma. */
361 if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
363 /* The picture buffer is in slow memory. We'll use
364 * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
365 * one for subpictures rendering. */
366 picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
367 if( p_tmp_pic->i_status == FREE_PICTURE )
369 vout_AllocatePicture( VLC_OBJECT(p_vout),
370 p_tmp_pic, p_vout->fmt_out.i_chroma,
371 p_vout->fmt_out.i_width,
372 p_vout->fmt_out.i_height,
373 p_vout->fmt_out.i_aspect );
374 p_tmp_pic->i_type = MEMORY_PICTURE;
375 p_tmp_pic->i_status = RESERVED_PICTURE;
376 /* some modules (such as blend) needs to know the extra information in picture heap */
377 p_tmp_pic->p_heap = &p_vout->output;
380 /* Convert image to the first direct buffer */
381 p_vout->p_chroma->p_owner = (picture_t *)p_tmp_pic;
382 p_vout->p_chroma->pf_video_filter( p_vout->p_chroma, p_pic );
384 /* Render subpictures on the first direct buffer */
385 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_tmp_pic,
387 i_scale_width, i_scale_height );
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 vout_CopyPicture( p_vout, &p_vout->p_picture[0], p_tmp_pic );
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->p_chroma->p_owner = (picture_t *)&p_vout->p_picture[0];
403 p_vout->p_chroma->pf_video_filter( p_vout->p_chroma, p_pic );
405 /* Render subpictures on the first direct buffer */
406 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
407 &p_vout->p_picture[0], &p_vout->p_picture[0],
408 p_subpic, i_scale_width, i_scale_height );
411 if( p_vout->p_picture[0].pf_unlock )
412 p_vout->p_picture[0].pf_unlock( p_vout, &p_vout->p_picture[0] );
414 return &p_vout->p_picture[0];
418 * Calculate image window coordinates
420 * This function will be accessed by plugins. It calculates the relative
421 * position of the output window and the image window.
423 void vout_PlacePicture( vout_thread_t *p_vout,
424 unsigned int i_width, unsigned int i_height,
425 unsigned int *pi_x, unsigned int *pi_y,
426 unsigned int *pi_width, unsigned int *pi_height )
428 if( (i_width <= 0) || (i_height <=0) )
430 *pi_width = *pi_height = *pi_x = *pi_y = 0;
434 if( p_vout->b_scale )
437 *pi_height = i_height;
441 *pi_width = __MIN( i_width, p_vout->fmt_in.i_visible_width );
442 *pi_height = __MIN( i_height, p_vout->fmt_in.i_visible_height );
445 if( p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
446 *pi_height / p_vout->fmt_in.i_visible_height /
447 p_vout->fmt_in.i_sar_den > *pi_width )
449 *pi_height = p_vout->fmt_in.i_visible_height *
450 (int64_t)p_vout->fmt_in.i_sar_den * *pi_width /
451 p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
455 *pi_width = p_vout->fmt_in.i_visible_width *
456 (int64_t)p_vout->fmt_in.i_sar_num * *pi_height /
457 p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
460 switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
462 case VOUT_ALIGN_LEFT:
465 case VOUT_ALIGN_RIGHT:
466 *pi_x = i_width - *pi_width;
469 *pi_x = ( i_width - *pi_width ) / 2;
472 switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
477 case VOUT_ALIGN_BOTTOM:
478 *pi_y = i_height - *pi_height;
481 *pi_y = ( i_height - *pi_height ) / 2;
486 * Allocate a new picture in the heap.
488 * This function allocates a fake direct buffer in memory, which can be
489 * used exactly like a video buffer. The video output thread then manages
490 * how it gets displayed.
492 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
493 vlc_fourcc_t i_chroma,
494 int i_width, int i_height, int i_aspect )
496 int i_bytes, i_index, i_width_aligned, i_height_aligned;
498 /* Make sure the real dimensions are a multiple of 16 */
499 i_width_aligned = (i_width + 15) >> 4 << 4;
500 i_height_aligned = (i_height + 15) >> 4 << 4;
502 if( vout_InitPicture( p_this, p_pic, i_chroma,
503 i_width, i_height, i_aspect ) != VLC_SUCCESS )
509 /* Calculate how big the new image should be */
510 i_bytes = p_pic->format.i_bits_per_pixel *
511 i_width_aligned * i_height_aligned / 8;
513 p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
515 if( p_pic->p_data == NULL )
521 /* Fill the p_pixels field for each plane */
522 p_pic->p[ 0 ].p_pixels = p_pic->p_data;
524 for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
526 p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
527 p_pic->p[i_index-1].i_lines * 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;
568 p_format->i_bits_per_pixel = 24;
574 p_format->i_bits_per_pixel = 16;
581 p_format->i_bits_per_pixel = 12;
585 p_format->i_bits_per_pixel = 9;
588 p_format->i_bits_per_pixel = 8;
591 p_format->i_bits_per_pixel = 8;
596 p_format->i_bits_per_pixel = 32;
599 p_format->i_bits_per_pixel = 24;
603 p_format->i_bits_per_pixel = 16;
606 p_format->i_bits_per_pixel = 8;
610 p_format->i_bits_per_pixel = 8;
614 p_format->i_bits_per_pixel = 0;
620 * Initialise the picture_t fields given chroma/size.
622 * This function initializes most of the picture_t fields given a chroma and
623 * size. It makes the assumption that stride == width.
624 * \param p_this The calling object
625 * \param p_pic Pointer to the picture to initialize
626 * \param i_chroma The chroma fourcc to set
627 * \param i_width The width of the picture
628 * \param i_height The height of the picture
629 * \param i_aspect The aspect ratio of the picture
631 int __vout_InitPicture( vlc_object_t *p_this, picture_t *p_pic,
632 vlc_fourcc_t i_chroma,
633 int i_width, int i_height, int i_aspect )
635 int i_index, i_width_aligned, i_height_aligned;
637 /* Store default values */
638 for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
640 p_pic->p[i_index].p_pixels = NULL;
641 p_pic->p[i_index].i_pixel_pitch = 1;
644 p_pic->pf_release = 0;
646 p_pic->pf_unlock = 0;
647 p_pic->i_refcount = 0;
649 vout_InitFormat( &p_pic->format, i_chroma, i_width, i_height, i_aspect );
651 /* Make sure the real dimensions are a multiple of 16 */
652 i_width_aligned = (i_width + 15) >> 4 << 4;
653 i_height_aligned = (i_height + 15) >> 4 << 4;
655 /* Calculate coordinates */
659 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
660 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
661 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
662 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
663 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
664 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
665 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
666 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
667 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
668 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
669 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
670 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
676 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
677 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
678 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
679 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
680 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 4;
681 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 4;
682 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
683 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
684 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 4;
685 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 4;
686 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
687 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
695 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
696 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
697 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
698 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
699 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
700 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
701 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
702 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
703 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
704 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
705 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
706 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
712 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
713 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
714 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
715 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
716 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
717 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
718 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
719 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
720 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
721 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
722 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
723 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
729 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
730 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
731 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
732 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
733 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
734 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
735 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
736 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
737 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
738 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
739 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
740 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
745 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
746 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
747 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
748 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
749 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
750 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
751 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
752 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
753 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
754 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
755 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
756 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
757 p_pic->p[ A_PLANE ].i_lines = i_height_aligned;
758 p_pic->p[ A_PLANE ].i_visible_lines = i_height;
759 p_pic->p[ A_PLANE ].i_pitch = i_width_aligned;
760 p_pic->p[ A_PLANE ].i_visible_pitch = i_width;
765 p_pic->p->i_lines = i_height_aligned;
766 p_pic->p->i_visible_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 = 8;
774 p_pic->p->i_lines = i_height_aligned;
775 p_pic->p->i_visible_lines = i_height;
776 p_pic->p->i_pitch = i_width_aligned;
777 p_pic->p->i_visible_pitch = i_width;
778 p_pic->p->i_pixel_pitch = 4;
784 p_pic->p->i_lines = i_height_aligned;
785 p_pic->p->i_visible_lines = i_height;
786 p_pic->p->i_pitch = i_width_aligned * 2;
787 p_pic->p->i_visible_pitch = i_width * 2;
788 p_pic->p->i_pixel_pitch = 4;
793 p_pic->p->i_lines = i_height_aligned;
794 p_pic->p->i_visible_lines = i_height;
795 p_pic->p->i_pitch = i_width_aligned;
796 p_pic->p->i_visible_pitch = i_width;
797 p_pic->p->i_pixel_pitch = 1;
802 p_pic->p->i_lines = i_height_aligned;
803 p_pic->p->i_visible_lines = i_height;
804 p_pic->p->i_pitch = i_width_aligned * 2;
805 p_pic->p->i_visible_pitch = i_width * 2;
806 p_pic->p->i_pixel_pitch = 2;
811 p_pic->p->i_lines = i_height_aligned;
812 p_pic->p->i_visible_lines = i_height;
813 p_pic->p->i_pitch = i_width_aligned * 2;
814 p_pic->p->i_visible_pitch = i_width * 2;
815 p_pic->p->i_pixel_pitch = 2;
820 p_pic->p->i_lines = i_height_aligned;
821 p_pic->p->i_visible_lines = i_height;
822 p_pic->p->i_pitch = i_width_aligned * 3;
823 p_pic->p->i_visible_pitch = i_width * 3;
824 p_pic->p->i_pixel_pitch = 3;
830 p_pic->p->i_lines = i_height_aligned;
831 p_pic->p->i_visible_lines = i_height;
832 p_pic->p->i_pitch = i_width_aligned * 4;
833 p_pic->p->i_visible_pitch = i_width * 4;
834 p_pic->p->i_pixel_pitch = 4;
839 p_pic->p->i_lines = i_height_aligned;
840 p_pic->p->i_visible_lines = i_height;
841 p_pic->p->i_pitch = i_width_aligned;
842 p_pic->p->i_visible_pitch = i_width;
843 p_pic->p->i_pixel_pitch = 1;
848 msg_Err( p_this, "unknown chroma type 0x%.8x (%4.4s)",
849 i_chroma, (char*)&i_chroma );
858 * Compare two chroma values
860 * This function returns 1 if the two fourcc values given as argument are
861 * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
863 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
865 /* If they are the same, they are the same ! */
866 if( i_chroma == i_amorhc )
871 /* Check for equivalence classes */
919 /*****************************************************************************
920 * vout_CopyPicture: copy a picture to another one
921 *****************************************************************************
922 * This function takes advantage of the image format, and reduces the
923 * number of calls to memcpy() to the minimum. Source and destination
924 * images must have same width (hence i_visible_pitch), height, and chroma.
925 *****************************************************************************/
926 void __vout_CopyPicture( vlc_object_t *p_this,
927 picture_t *p_dest, picture_t *p_src )
931 for( i = 0; i < p_src->i_planes ; i++ )
933 if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
935 /* There are margins, but with the same width : perfect ! */
936 vlc_memcpy( p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
937 p_src->p[i].i_pitch * p_src->p[i].i_visible_lines );
941 /* We need to proceed line by line */
942 uint8_t *p_in = p_src->p[i].p_pixels;
944 uint8_t *p_out = p_dest->p[i].p_pixels;
948 for( i_line = p_src->p[i].i_visible_lines; i_line--; )
950 vlc_memcpy( p_out, p_in, p_src->p[i].i_visible_pitch );
951 p_in += p_src->p[i].i_pitch;
952 p_out += p_dest->p[i].i_pitch;
957 p_dest->date = p_src->date;
958 p_dest->b_force = p_src->b_force;
959 p_dest->i_nb_fields = p_src->i_nb_fields;
960 p_dest->b_progressive = p_src->b_progressive;
961 p_dest->b_top_field_first = p_src->b_top_field_first;