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 *****************************************************************************/
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"
38 #include "vout_pictures.h"
43 * Remove the reservation flag of a picture, which will cause it to be ready
44 * for display. The picture won't be displayed until vout_DatePicture has been
47 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
49 vlc_mutex_lock( &p_vout->picture_lock );
50 switch( p_pic->i_status )
52 case RESERVED_PICTURE:
53 p_pic->i_status = RESERVED_DISP_PICTURE;
55 case RESERVED_DATED_PICTURE:
56 p_pic->i_status = READY_PICTURE;
59 msg_Err( p_vout, "picture to display %p has invalid status %d",
60 p_pic, p_pic->i_status );
64 vlc_mutex_unlock( &p_vout->picture_lock );
70 * Remove the reservation flag of a picture, which will cause it to be ready
71 * for display. The picture won't be displayed until vout_DisplayPicture has
73 * \param p_vout The vout in question
74 * \param p_pic The picture to date
75 * \param date The date to display the picture
77 void vout_DatePicture( vout_thread_t *p_vout,
78 picture_t *p_pic, mtime_t date )
80 vlc_mutex_lock( &p_vout->picture_lock );
82 switch( p_pic->i_status )
84 case RESERVED_PICTURE:
85 p_pic->i_status = RESERVED_DATED_PICTURE;
87 case RESERVED_DISP_PICTURE:
88 p_pic->i_status = READY_PICTURE;
91 msg_Err( p_vout, "picture to date %p has invalid status %d",
92 p_pic, p_pic->i_status );
96 vlc_mutex_unlock( &p_vout->picture_lock );
100 * Allocate a picture in the video output heap.
102 * This function creates a reserved image in the video output heap.
103 * A null pointer is returned if the function fails. This method provides an
104 * already allocated zone of memory in the picture data fields.
105 * It needs locking since several pictures can be created by several producers
108 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
109 vlc_bool_t b_progressive,
110 vlc_bool_t b_top_field_first,
111 unsigned int i_nb_fields )
113 int i_pic; /* picture index */
115 picture_t * p_freepic = NULL; /* first free picture */
118 vlc_mutex_lock( &p_vout->picture_lock );
121 * Look for an empty place in the picture heap.
123 for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
125 p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
128 switch( p_pic->i_status )
130 case DESTROYED_PICTURE:
131 /* Memory will not be reallocated, and function can end
132 * immediately - this is the best possible case, since no
133 * memory allocation needs to be done */
134 p_pic->i_status = RESERVED_PICTURE;
135 p_pic->i_refcount = 0;
138 p_pic->b_progressive = b_progressive;
139 p_pic->i_nb_fields = i_nb_fields;
140 p_pic->b_top_field_first = b_top_field_first;
142 p_vout->i_heap_size++;
143 p_vout->render.i_last_used_pic =
144 ( p_vout->render.i_last_used_pic + i_pic + 1 )
146 vlc_mutex_unlock( &p_vout->picture_lock );
150 /* Picture is empty and ready for allocation */
151 p_vout->render.i_last_used_pic =
152 ( p_vout->render.i_last_used_pic + i_pic + 1 )
165 if( p_freepic != NULL )
167 vout_AllocatePicture( VLC_OBJECT(p_vout),
168 p_freepic, p_vout->render.i_chroma,
169 p_vout->render.i_width, p_vout->render.i_height,
170 p_vout->render.i_aspect );
172 if( p_freepic->i_planes )
174 /* Copy picture information, set some default values */
175 p_freepic->i_status = RESERVED_PICTURE;
176 p_freepic->i_type = MEMORY_PICTURE;
177 p_freepic->b_slow = 0;
179 p_freepic->i_refcount = 0;
180 p_freepic->b_force = 0;
182 p_freepic->b_progressive = b_progressive;
183 p_freepic->i_nb_fields = i_nb_fields;
184 p_freepic->b_top_field_first = b_top_field_first;
186 p_freepic->i_matrix_coefficients = 1;
188 p_vout->i_heap_size++;
192 /* Memory allocation failed : set picture as empty */
193 p_freepic->i_status = FREE_PICTURE;
196 msg_Err( p_vout, "picture allocation failed" );
199 vlc_mutex_unlock( &p_vout->picture_lock );
204 /* No free or destroyed picture could be found, but the decoder
205 * will try again in a while. */
206 vlc_mutex_unlock( &p_vout->picture_lock );
212 * Remove a permanent or reserved picture from the heap
214 * This function frees a previously reserved picture or a permanent
215 * picture. It is meant to be used when the construction of a picture aborted.
216 * Note that the picture will be destroyed even if it is linked !
218 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
220 vlc_mutex_lock( &p_vout->picture_lock );
223 /* Check if picture status is valid */
224 if( (p_pic->i_status != RESERVED_PICTURE) &&
225 (p_pic->i_status != RESERVED_DATED_PICTURE) &&
226 (p_pic->i_status != RESERVED_DISP_PICTURE) )
228 msg_Err( p_vout, "picture to destroy %p has invalid status %d",
229 p_pic, p_pic->i_status );
233 p_pic->i_status = DESTROYED_PICTURE;
234 p_vout->i_heap_size--;
236 vlc_mutex_unlock( &p_vout->picture_lock );
240 * Increment reference counter of a picture
242 * This function increments the reference counter of a picture in the video
243 * heap. It needs a lock since several producer threads can access the picture.
245 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
247 vlc_mutex_lock( &p_vout->picture_lock );
249 vlc_mutex_unlock( &p_vout->picture_lock );
253 * Decrement reference counter of a picture
255 * This function decrement the reference counter of a picture in the video heap
257 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
259 vlc_mutex_lock( &p_vout->picture_lock );
262 if( p_pic->i_refcount < 0 )
264 msg_Err( p_vout, "picture %p refcount is %i",
265 p_pic, p_pic->i_refcount );
266 p_pic->i_refcount = 0;
269 if( ( p_pic->i_refcount == 0 ) &&
270 ( p_pic->i_status == DISPLAYED_PICTURE ) )
272 p_pic->i_status = DESTROYED_PICTURE;
273 p_vout->i_heap_size--;
276 vlc_mutex_unlock( &p_vout->picture_lock );
282 * This function chooses whether the current picture needs to be copied
283 * before rendering, does the subpicture magic, and tells the video output
284 * thread which direct buffer needs to be displayed.
286 picture_t * vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
287 subpicture_t *p_subpic )
289 int i_scale_width, i_scale_height;
297 i_scale_width = p_vout->fmt_out.i_visible_width * 1000 /
298 p_vout->fmt_in.i_visible_width;
299 i_scale_height = p_vout->fmt_out.i_visible_height * 1000 /
300 p_vout->fmt_in.i_visible_height;
302 if( p_pic->i_type == DIRECT_PICTURE )
304 if( !p_vout->render.b_allow_modify_pics || p_pic->i_refcount ||
307 /* Picture is in a direct buffer and is still in use,
308 * we need to copy it to another direct buffer before
309 * displaying it if there are subtitles. */
310 if( p_subpic != NULL )
312 /* We have subtitles. First copy the picture to
313 * the spare direct buffer, then render the
315 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
317 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
318 PP_OUTPUTPICTURE[0], p_pic, p_subpic,
319 i_scale_width, i_scale_height );
321 return PP_OUTPUTPICTURE[0];
324 /* No subtitles, picture is in a directbuffer so
325 * we can display it directly even if it is still
330 /* Picture is in a direct buffer but isn't used by the
331 * decoder. We can safely render subtitles on it and
333 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_pic, p_pic,
334 p_subpic, i_scale_width, i_scale_height );
339 /* Not a direct buffer. We either need to copy it to a direct buffer,
340 * or render it if the chroma isn't the same. */
341 if( p_vout->b_direct )
343 /* Picture is not in a direct buffer, but is exactly the
344 * same size as the direct buffers. A memcpy() is enough,
345 * then render the subtitles. */
347 if( PP_OUTPUTPICTURE[0]->pf_lock )
348 if( PP_OUTPUTPICTURE[0]->pf_lock( p_vout, PP_OUTPUTPICTURE[0] ) )
351 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
352 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
353 PP_OUTPUTPICTURE[0], p_pic,
354 p_subpic, i_scale_width, i_scale_height );
356 if( PP_OUTPUTPICTURE[0]->pf_unlock )
357 PP_OUTPUTPICTURE[0]->pf_unlock( p_vout, PP_OUTPUTPICTURE[0] );
359 return PP_OUTPUTPICTURE[0];
362 /* Picture is not in a direct buffer, and needs to be converted to
363 * another size/chroma. Then the subtitles need to be rendered as
364 * well. This usually means software YUV, or hardware YUV with a
365 * different chroma. */
367 if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
369 /* The picture buffer is in slow memory. We'll use
370 * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
371 * one for subpictures rendering. */
372 picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
373 if( p_tmp_pic->i_status == FREE_PICTURE )
375 vout_AllocatePicture( VLC_OBJECT(p_vout),
376 p_tmp_pic, p_vout->fmt_out.i_chroma,
377 p_vout->fmt_out.i_width,
378 p_vout->fmt_out.i_height,
379 p_vout->fmt_out.i_aspect );
380 p_tmp_pic->i_type = MEMORY_PICTURE;
381 p_tmp_pic->i_status = RESERVED_PICTURE;
384 /* Convert image to the first direct buffer */
385 p_vout->chroma.pf_convert( p_vout, p_pic, p_tmp_pic );
387 /* Render subpictures on the first direct buffer */
388 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_tmp_pic,
390 i_scale_width, i_scale_height );
392 if( p_vout->p_picture[0].pf_lock )
393 if( p_vout->p_picture[0].pf_lock( p_vout, &p_vout->p_picture[0] ) )
396 vout_CopyPicture( p_vout, &p_vout->p_picture[0], p_tmp_pic );
400 if( p_vout->p_picture[0].pf_lock )
401 if( p_vout->p_picture[0].pf_lock( p_vout, &p_vout->p_picture[0] ) )
404 /* Convert image to the first direct buffer */
405 p_vout->chroma.pf_convert( p_vout, p_pic, &p_vout->p_picture[0] );
407 /* Render subpictures on the first direct buffer */
408 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
409 &p_vout->p_picture[0], &p_vout->p_picture[0],
410 p_subpic, i_scale_width, i_scale_height );
413 if( p_vout->p_picture[0].pf_unlock )
414 p_vout->p_picture[0].pf_unlock( p_vout, &p_vout->p_picture[0] );
416 return &p_vout->p_picture[0];
420 * Calculate image window coordinates
422 * This function will be accessed by plugins. It calculates the relative
423 * position of the output window and the image window.
425 void vout_PlacePicture( vout_thread_t *p_vout,
426 unsigned int i_width, unsigned int i_height,
427 unsigned int *pi_x, unsigned int *pi_y,
428 unsigned int *pi_width, unsigned int *pi_height )
430 if( (i_width <= 0) || (i_height <=0) )
432 *pi_width = *pi_height = *pi_x = *pi_y = 0;
436 if( p_vout->b_scale )
439 *pi_height = i_height;
443 *pi_width = __MIN( i_width, p_vout->fmt_in.i_visible_width );
444 *pi_height = __MIN( i_height, p_vout->fmt_in.i_visible_height );
447 if( p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
448 *pi_height / p_vout->fmt_in.i_visible_height /
449 p_vout->fmt_in.i_sar_den > *pi_width )
451 *pi_height = p_vout->fmt_in.i_visible_height *
452 (int64_t)p_vout->fmt_in.i_sar_den * *pi_width /
453 p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
457 *pi_width = p_vout->fmt_in.i_visible_width *
458 (int64_t)p_vout->fmt_in.i_sar_num * *pi_height /
459 p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
462 switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
464 case VOUT_ALIGN_LEFT:
467 case VOUT_ALIGN_RIGHT:
468 *pi_x = i_width - *pi_width;
471 *pi_x = ( i_width - *pi_width ) / 2;
474 switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
479 case VOUT_ALIGN_BOTTOM:
480 *pi_y = i_height - *pi_height;
483 *pi_y = ( i_height - *pi_height ) / 2;
488 * Allocate a new picture in the heap.
490 * This function allocates a fake direct buffer in memory, which can be
491 * used exactly like a video buffer. The video output thread then manages
492 * how it gets displayed.
494 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
495 vlc_fourcc_t i_chroma,
496 int i_width, int i_height, int i_aspect )
498 int i_bytes, i_index, i_width_aligned, i_height_aligned;
500 /* Make sure the real dimensions are a multiple of 16 */
501 i_width_aligned = (i_width + 15) >> 4 << 4;
502 i_height_aligned = (i_height + 15) >> 4 << 4;
504 if( vout_InitPicture( p_this, p_pic, i_chroma,
505 i_width, i_height, i_aspect ) != VLC_SUCCESS )
511 /* Calculate how big the new image should be */
512 i_bytes = p_pic->format.i_bits_per_pixel *
513 i_width_aligned * i_height_aligned / 8;
515 p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
517 if( p_pic->p_data == NULL )
523 /* Fill the p_pixels field for each plane */
524 p_pic->p[ 0 ].p_pixels = p_pic->p_data;
526 for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
528 p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
529 p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
536 * Initialise the video format fields given chroma/size.
538 * This function initializes all the video_frame_format_t fields given the
539 * static properties of a picture (chroma and size).
540 * \param p_format Pointer to the format structure to initialize
541 * \param i_chroma Chroma to set
542 * \param i_width Width to set
543 * \param i_height Height to set
544 * \param i_aspect Aspect ratio
546 void vout_InitFormat( video_frame_format_t *p_format, vlc_fourcc_t i_chroma,
547 int i_width, int i_height, int i_aspect )
549 p_format->i_chroma = i_chroma;
550 p_format->i_width = p_format->i_visible_width = i_width;
551 p_format->i_height = p_format->i_visible_height = i_height;
552 p_format->i_x_offset = p_format->i_y_offset = 0;
553 p_format->i_aspect = i_aspect;
556 /* Assume we have square pixels */
557 if( i_width && i_height )
558 p_format->i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
560 p_format->i_aspect = 0;
566 p_format->i_bits_per_pixel = 32;
570 p_format->i_bits_per_pixel = 24;
576 p_format->i_bits_per_pixel = 16;
577 p_format->i_bits_per_pixel = 16;
584 p_format->i_bits_per_pixel = 12;
588 p_format->i_bits_per_pixel = 9;
591 p_format->i_bits_per_pixel = 8;
594 p_format->i_bits_per_pixel = 8;
598 p_format->i_bits_per_pixel = 32;
601 p_format->i_bits_per_pixel = 24;
605 p_format->i_bits_per_pixel = 16;
608 p_format->i_bits_per_pixel = 8;
611 p_format->i_bits_per_pixel = 0;
617 * Initialise the picture_t fields given chroma/size.
619 * This function initializes most of the picture_t fields given a chroma and
620 * size. It makes the assumption that stride == width.
621 * \param p_this The calling object
622 * \param p_pic Pointer to the picture to initialize
623 * \param i_chroma The chroma fourcc to set
624 * \param i_width The width of the picture
625 * \param i_height The height of the picture
626 * \param i_aspect The aspect ratio of the picture
628 int __vout_InitPicture( vlc_object_t *p_this, picture_t *p_pic,
629 vlc_fourcc_t i_chroma,
630 int i_width, int i_height, int i_aspect )
632 int i_index, i_width_aligned, i_height_aligned;
634 /* Store default values */
635 for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
637 p_pic->p[i_index].p_pixels = NULL;
638 p_pic->p[i_index].i_pixel_pitch = 1;
641 p_pic->pf_release = 0;
643 p_pic->pf_unlock = 0;
644 p_pic->i_refcount = 0;
646 vout_InitFormat( &p_pic->format, i_chroma, i_width, i_height, i_aspect );
648 /* Make sure the real dimensions are a multiple of 16 */
649 i_width_aligned = (i_width + 15) >> 4 << 4;
650 i_height_aligned = (i_height + 15) >> 4 << 4;
652 /* Calculate coordinates */
656 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
657 p_pic->p[ Y_PLANE ].i_visible_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_aligned;
661 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
662 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
663 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
664 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
665 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
666 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
667 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
673 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
674 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
675 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
676 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
677 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 4;
678 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 4;
679 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
680 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
681 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 4;
682 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 4;
683 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
684 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
692 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
693 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
694 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
695 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
696 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
697 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
698 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
699 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
700 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
701 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
702 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
703 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
709 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
710 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
711 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
712 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
713 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
714 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
715 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
716 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
717 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
718 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
719 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
720 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
726 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
727 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
728 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
729 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
730 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
731 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
732 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
733 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
734 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
735 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
736 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
737 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
742 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
743 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
744 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
745 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
746 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
747 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
748 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
749 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
750 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
751 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
752 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
753 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
754 p_pic->p[ A_PLANE ].i_lines = i_height_aligned;
755 p_pic->p[ A_PLANE ].i_visible_lines = i_height;
756 p_pic->p[ A_PLANE ].i_pitch = i_width_aligned;
757 p_pic->p[ A_PLANE ].i_visible_pitch = i_width;
762 p_pic->p->i_lines = i_height_aligned;
763 p_pic->p->i_visible_lines = i_height;
764 p_pic->p->i_pitch = i_width_aligned;
765 p_pic->p->i_visible_pitch = i_width;
766 p_pic->p->i_pixel_pitch = 8;
771 p_pic->p->i_lines = i_height_aligned;
772 p_pic->p->i_visible_lines = i_height;
773 p_pic->p->i_pitch = i_width_aligned;
774 p_pic->p->i_visible_pitch = i_width;
775 p_pic->p->i_pixel_pitch = 4;
781 p_pic->p->i_lines = i_height_aligned;
782 p_pic->p->i_visible_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 = 4;
790 p_pic->p->i_lines = i_height_aligned;
791 p_pic->p->i_visible_lines = i_height;
792 p_pic->p->i_pitch = i_width_aligned;
793 p_pic->p->i_visible_pitch = i_width;
794 p_pic->p->i_pixel_pitch = 1;
799 p_pic->p->i_lines = i_height_aligned;
800 p_pic->p->i_visible_lines = i_height;
801 p_pic->p->i_pitch = i_width_aligned * 2;
802 p_pic->p->i_visible_pitch = i_width * 2;
803 p_pic->p->i_pixel_pitch = 2;
808 p_pic->p->i_lines = i_height_aligned;
809 p_pic->p->i_visible_lines = i_height;
810 p_pic->p->i_pitch = i_width_aligned * 2;
811 p_pic->p->i_visible_pitch = i_width * 2;
812 p_pic->p->i_pixel_pitch = 2;
817 p_pic->p->i_lines = i_height_aligned;
818 p_pic->p->i_visible_lines = i_height;
819 p_pic->p->i_pitch = i_width_aligned * 3;
820 p_pic->p->i_visible_pitch = i_width * 3;
821 p_pic->p->i_pixel_pitch = 3;
826 p_pic->p->i_lines = i_height_aligned;
827 p_pic->p->i_visible_lines = i_height;
828 p_pic->p->i_pitch = i_width_aligned * 4;
829 p_pic->p->i_visible_pitch = i_width * 4;
830 p_pic->p->i_pixel_pitch = 4;
835 msg_Err( p_this, "unknown chroma type 0x%.8x (%4.4s)",
836 i_chroma, (char*)&i_chroma );
845 * Compare two chroma values
847 * This function returns 1 if the two fourcc values given as argument are
848 * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
850 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
852 /* If they are the same, they are the same ! */
853 if( i_chroma == i_amorhc )
858 /* Check for equivalence classes */
906 /*****************************************************************************
907 * vout_CopyPicture: copy a picture to another one
908 *****************************************************************************
909 * This function takes advantage of the image format, and reduces the
910 * number of calls to memcpy() to the minimum. Source and destination
911 * images must have same width (hence i_visible_pitch), height, and chroma.
912 *****************************************************************************/
913 void __vout_CopyPicture( vlc_object_t *p_this,
914 picture_t *p_dest, picture_t *p_src )
918 for( i = 0; i < p_src->i_planes ; i++ )
920 if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
922 /* There are margins, but with the same width : perfect ! */
923 p_this->p_libvlc->pf_memcpy(
924 p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
925 p_src->p[i].i_pitch * p_src->p[i].i_visible_lines );
929 /* We need to proceed line by line */
930 uint8_t *p_in = p_src->p[i].p_pixels;
931 uint8_t *p_out = p_dest->p[i].p_pixels;
934 for( i_line = p_src->p[i].i_visible_lines; i_line--; )
936 p_this->p_libvlc->pf_memcpy( p_out, p_in,
937 p_src->p[i].i_visible_pitch );
938 p_in += p_src->p[i].i_pitch;
939 p_out += p_dest->p[i].i_pitch;
944 p_dest->date = p_src->date;
945 p_dest->b_force = p_src->b_force;
946 p_dest->i_nb_fields = p_src->i_nb_fields;
947 p_dest->b_progressive = p_src->b_progressive;
948 p_dest->b_top_field_first = p_src->b_top_field_first;