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 );
305 * This function chooses whether the current picture needs to be copied
306 * before rendering, does the subpicture magic, and tells the video output
307 * thread which direct buffer needs to be displayed.
309 picture_t * vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
310 subpicture_t *p_subpic )
312 int i_scale_width, i_scale_height;
320 i_scale_width = p_vout->fmt_out.i_visible_width * 1000 /
321 p_vout->fmt_in.i_visible_width;
322 i_scale_height = p_vout->fmt_out.i_visible_height * 1000 /
323 p_vout->fmt_in.i_visible_height;
325 if( p_pic->i_type == DIRECT_PICTURE )
327 if( !p_vout->render.b_allow_modify_pics || p_pic->i_refcount ||
330 /* Picture is in a direct buffer and is still in use,
331 * we need to copy it to another direct buffer before
332 * displaying it if there are subtitles. */
333 if( p_subpic != NULL )
335 /* We have subtitles. First copy the picture to
336 * the spare direct buffer, then render the
338 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
340 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
341 PP_OUTPUTPICTURE[0], p_pic, p_subpic,
342 i_scale_width, i_scale_height );
344 return PP_OUTPUTPICTURE[0];
347 /* No subtitles, picture is in a directbuffer so
348 * we can display it directly even if it is still
353 /* Picture is in a direct buffer but isn't used by the
354 * decoder. We can safely render subtitles on it and
356 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_pic, p_pic,
357 p_subpic, i_scale_width, i_scale_height );
362 /* Not a direct buffer. We either need to copy it to a direct buffer,
363 * or render it if the chroma isn't the same. */
364 if( p_vout->b_direct )
366 /* Picture is not in a direct buffer, but is exactly the
367 * same size as the direct buffers. A memcpy() is enough,
368 * then render the subtitles. */
370 if( PP_OUTPUTPICTURE[0]->pf_lock )
371 if( PP_OUTPUTPICTURE[0]->pf_lock( p_vout, PP_OUTPUTPICTURE[0] ) )
374 vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
375 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
376 PP_OUTPUTPICTURE[0], p_pic,
377 p_subpic, i_scale_width, i_scale_height );
379 if( PP_OUTPUTPICTURE[0]->pf_unlock )
380 PP_OUTPUTPICTURE[0]->pf_unlock( p_vout, PP_OUTPUTPICTURE[0] );
382 return PP_OUTPUTPICTURE[0];
385 /* Picture is not in a direct buffer, and needs to be converted to
386 * another size/chroma. Then the subtitles need to be rendered as
387 * well. This usually means software YUV, or hardware YUV with a
388 * different chroma. */
390 if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
392 /* The picture buffer is in slow memory. We'll use
393 * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
394 * one for subpictures rendering. */
395 picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
396 if( p_tmp_pic->i_status == FREE_PICTURE )
398 vout_AllocatePicture( VLC_OBJECT(p_vout),
399 p_tmp_pic, p_vout->fmt_out.i_chroma,
400 p_vout->fmt_out.i_width,
401 p_vout->fmt_out.i_height,
402 p_vout->fmt_out.i_aspect );
403 p_tmp_pic->i_type = MEMORY_PICTURE;
404 p_tmp_pic->i_status = RESERVED_PICTURE;
405 /* some modules (such as blend) needs to know the extra information in picture heap */
406 p_tmp_pic->p_heap = &p_vout->output;
409 /* Convert image to the first direct buffer */
410 p_vout->p_chroma->p_owner = (filter_owner_sys_t *)p_tmp_pic;
411 p_vout->p_chroma->pf_video_filter( p_vout->p_chroma, p_pic );
413 /* Render subpictures on the first direct buffer */
414 spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_tmp_pic,
416 i_scale_width, i_scale_height );
418 if( p_vout->p_picture[0].pf_lock )
419 if( p_vout->p_picture[0].pf_lock( p_vout, &p_vout->p_picture[0] ) )
422 vout_CopyPicture( p_vout, &p_vout->p_picture[0], p_tmp_pic );
426 if( p_vout->p_picture[0].pf_lock )
427 if( p_vout->p_picture[0].pf_lock( 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 if( p_vout->p_picture[0].pf_unlock )
441 p_vout->p_picture[0].pf_unlock( p_vout, &p_vout->p_picture[0] );
443 return &p_vout->p_picture[0];
447 * Calculate image window coordinates
449 * This function will be accessed by plugins. It calculates the relative
450 * position of the output window and the image window.
452 void vout_PlacePicture( vout_thread_t *p_vout,
453 unsigned int i_width, unsigned int i_height,
454 unsigned int *pi_x, unsigned int *pi_y,
455 unsigned int *pi_width, unsigned int *pi_height )
457 if( (i_width <= 0) || (i_height <=0) )
459 *pi_width = *pi_height = *pi_x = *pi_y = 0;
463 if( p_vout->b_scale )
466 *pi_height = i_height;
470 *pi_width = __MIN( i_width, p_vout->fmt_in.i_visible_width );
471 *pi_height = __MIN( i_height, p_vout->fmt_in.i_visible_height );
474 if( p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
475 *pi_height / p_vout->fmt_in.i_visible_height /
476 p_vout->fmt_in.i_sar_den > *pi_width )
478 *pi_height = p_vout->fmt_in.i_visible_height *
479 (int64_t)p_vout->fmt_in.i_sar_den * *pi_width /
480 p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
484 *pi_width = p_vout->fmt_in.i_visible_width *
485 (int64_t)p_vout->fmt_in.i_sar_num * *pi_height /
486 p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
489 switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
491 case VOUT_ALIGN_LEFT:
494 case VOUT_ALIGN_RIGHT:
495 *pi_x = i_width - *pi_width;
498 *pi_x = ( i_width - *pi_width ) / 2;
501 switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
506 case VOUT_ALIGN_BOTTOM:
507 *pi_y = i_height - *pi_height;
510 *pi_y = ( i_height - *pi_height ) / 2;
515 * Allocate a new picture in the heap.
517 * This function allocates a fake direct buffer in memory, which can be
518 * used exactly like a video buffer. The video output thread then manages
519 * how it gets displayed.
521 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
522 vlc_fourcc_t i_chroma,
523 int i_width, int i_height, int i_aspect )
525 int i_bytes, i_index, i_width_aligned, i_height_aligned;
527 /* Make sure the real dimensions are a multiple of 16 */
528 i_width_aligned = (i_width + 15) >> 4 << 4;
529 i_height_aligned = (i_height + 15) >> 4 << 4;
531 if( vout_InitPicture( p_this, p_pic, i_chroma,
532 i_width, i_height, i_aspect ) != VLC_SUCCESS )
538 /* Calculate how big the new image should be */
539 i_bytes = p_pic->format.i_bits_per_pixel *
540 i_width_aligned * i_height_aligned / 8;
542 p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
544 if( p_pic->p_data == NULL )
550 /* Fill the p_pixels field for each plane */
551 p_pic->p[ 0 ].p_pixels = p_pic->p_data;
553 for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
555 p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
556 p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
563 * Initialise the video format fields given chroma/size.
565 * This function initializes all the video_frame_format_t fields given the
566 * static properties of a picture (chroma and size).
567 * \param p_format Pointer to the format structure to initialize
568 * \param i_chroma Chroma to set
569 * \param i_width Width to set
570 * \param i_height Height to set
571 * \param i_aspect Aspect ratio
573 void vout_InitFormat( video_frame_format_t *p_format, vlc_fourcc_t i_chroma,
574 int i_width, int i_height, int i_aspect )
576 p_format->i_chroma = i_chroma;
577 p_format->i_width = p_format->i_visible_width = i_width;
578 p_format->i_height = p_format->i_visible_height = i_height;
579 p_format->i_x_offset = p_format->i_y_offset = 0;
580 p_format->i_aspect = i_aspect;
583 /* Assume we have square pixels */
584 if( i_width && i_height )
585 p_format->i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
587 p_format->i_aspect = 0;
593 p_format->i_bits_per_pixel = 32;
597 p_format->i_bits_per_pixel = 24;
603 p_format->i_bits_per_pixel = 16;
607 p_format->i_bits_per_pixel = 16;
614 p_format->i_bits_per_pixel = 12;
618 p_format->i_bits_per_pixel = 9;
621 p_format->i_bits_per_pixel = 8;
624 p_format->i_bits_per_pixel = 8;
629 p_format->i_bits_per_pixel = 32;
632 p_format->i_bits_per_pixel = 24;
636 p_format->i_bits_per_pixel = 16;
639 p_format->i_bits_per_pixel = 8;
645 p_format->i_bits_per_pixel = 8;
649 p_format->i_bits_per_pixel = 0;
655 * Initialise the picture_t fields given chroma/size.
657 * This function initializes most of the picture_t fields given a chroma and
658 * size. It makes the assumption that stride == width.
659 * \param p_this The calling object
660 * \param p_pic Pointer to the picture to initialize
661 * \param i_chroma The chroma fourcc to set
662 * \param i_width The width of the picture
663 * \param i_height The height of the picture
664 * \param i_aspect The aspect ratio of the picture
666 int __vout_InitPicture( vlc_object_t *p_this, picture_t *p_pic,
667 vlc_fourcc_t i_chroma,
668 int i_width, int i_height, int i_aspect )
670 int i_index, i_width_aligned, i_height_aligned;
672 /* Store default values */
673 for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
675 p_pic->p[i_index].p_pixels = NULL;
676 p_pic->p[i_index].i_pixel_pitch = 1;
679 p_pic->pf_release = 0;
681 p_pic->pf_unlock = 0;
682 p_pic->i_refcount = 0;
685 p_pic->i_qstride = 0;
688 vout_InitFormat( &p_pic->format, i_chroma, i_width, i_height, i_aspect );
690 /* Make sure the real dimensions are a multiple of 16 */
691 i_width_aligned = (i_width + 15) >> 4 << 4;
692 i_height_aligned = (i_height + 15) >> 4 << 4;
694 /* Calculate coordinates */
698 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
699 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
700 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
701 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
702 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
703 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
704 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
705 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
706 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
707 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
708 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
709 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
715 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
716 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
717 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
718 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
719 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 4;
720 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 4;
721 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
722 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
723 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 4;
724 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 4;
725 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
726 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
734 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
735 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
736 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
737 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
738 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
739 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
740 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
741 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
742 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
743 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
744 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
745 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
751 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
752 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
753 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
754 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
755 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
756 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
757 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
758 p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
759 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
760 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
761 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
762 p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
768 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
769 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
770 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
771 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
772 p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
773 p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
774 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
775 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
776 p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
777 p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
778 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
779 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
785 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
786 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
787 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
788 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
789 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
790 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
791 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
792 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
793 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
794 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
795 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
796 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
801 p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
802 p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
803 p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
804 p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
805 p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
806 p_pic->p[ U_PLANE ].i_visible_lines = i_height;
807 p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
808 p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
809 p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
810 p_pic->p[ V_PLANE ].i_visible_lines = i_height;
811 p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
812 p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
813 p_pic->p[ A_PLANE ].i_lines = i_height_aligned;
814 p_pic->p[ A_PLANE ].i_visible_lines = i_height;
815 p_pic->p[ A_PLANE ].i_pitch = i_width_aligned;
816 p_pic->p[ A_PLANE ].i_visible_pitch = i_width;
821 p_pic->p->i_lines = i_height_aligned;
822 p_pic->p->i_visible_lines = i_height;
823 p_pic->p->i_pitch = i_width_aligned;
824 p_pic->p->i_visible_pitch = i_width;
825 p_pic->p->i_pixel_pitch = 8;
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;
833 p_pic->p->i_visible_pitch = i_width;
834 p_pic->p->i_pixel_pitch = 4;
840 p_pic->p->i_lines = i_height_aligned;
841 p_pic->p->i_visible_lines = i_height;
842 p_pic->p->i_pitch = i_width_aligned * 2;
843 p_pic->p->i_visible_pitch = i_width * 2;
844 p_pic->p->i_pixel_pitch = 4;
849 p_pic->p->i_lines = i_height_aligned;
850 p_pic->p->i_visible_lines = i_height;
851 p_pic->p->i_pitch = i_width_aligned;
852 p_pic->p->i_visible_pitch = i_width;
853 p_pic->p->i_pixel_pitch = 1;
858 p_pic->p->i_lines = i_height_aligned;
859 p_pic->p->i_visible_lines = i_height;
860 p_pic->p->i_pitch = i_width_aligned * 2;
861 p_pic->p->i_visible_pitch = i_width * 2;
862 p_pic->p->i_pixel_pitch = 2;
867 p_pic->p->i_lines = i_height_aligned;
868 p_pic->p->i_visible_lines = i_height;
869 p_pic->p->i_pitch = i_width_aligned * 2;
870 p_pic->p->i_visible_pitch = i_width * 2;
871 p_pic->p->i_pixel_pitch = 2;
876 p_pic->p->i_lines = i_height_aligned;
877 p_pic->p->i_visible_lines = i_height;
878 p_pic->p->i_pitch = i_width_aligned * 3;
879 p_pic->p->i_visible_pitch = i_width * 3;
880 p_pic->p->i_pixel_pitch = 3;
886 p_pic->p->i_lines = i_height_aligned;
887 p_pic->p->i_visible_lines = i_height;
888 p_pic->p->i_pitch = i_width_aligned * 4;
889 p_pic->p->i_visible_pitch = i_width * 4;
890 p_pic->p->i_pixel_pitch = 4;
897 p_pic->p->i_lines = i_height_aligned;
898 p_pic->p->i_visible_lines = i_height;
899 p_pic->p->i_pitch = i_width_aligned;
900 p_pic->p->i_visible_pitch = i_width;
901 p_pic->p->i_pixel_pitch = 1;
907 msg_Err( p_this, "unknown chroma type 0x%.8x (%4.4s)",
908 i_chroma, (char*)&i_chroma );
917 * Compare two chroma values
919 * This function returns 1 if the two fourcc values given as argument are
920 * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
922 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
924 /* If they are the same, they are the same ! */
925 if( i_chroma == i_amorhc )
930 /* Check for equivalence classes */
992 /*****************************************************************************
993 * vout_CopyPicture: copy a picture to another one
994 *****************************************************************************
995 * This function takes advantage of the image format, and reduces the
996 * number of calls to memcpy() to the minimum. Source and destination
997 * images must have same width (hence i_visible_pitch), height, and chroma.
998 *****************************************************************************/
999 void __vout_CopyPicture( vlc_object_t *p_this,
1000 picture_t *p_dest, picture_t *p_src )
1003 picture_Copy( p_dest, p_src );
1006 /*****************************************************************************
1008 *****************************************************************************/
1009 static void PictureReleaseCallback( picture_t *p_picture )
1011 if( --p_picture->i_refcount > 0 )
1013 picture_Delete( p_picture );
1015 /*****************************************************************************
1017 *****************************************************************************/
1018 picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
1020 picture_t *p_picture = malloc( sizeof(*p_picture) );
1025 memset( p_picture, 0, sizeof(*p_picture) );
1026 if( __vout_AllocatePicture( NULL, p_picture,
1027 i_chroma, i_width, i_height, i_aspect ) )
1033 p_picture->i_refcount = 1;
1034 p_picture->pf_release = PictureReleaseCallback;
1035 p_picture->i_status = RESERVED_PICTURE;
1040 /*****************************************************************************
1042 *****************************************************************************/
1043 void picture_Delete( picture_t *p_picture )
1045 assert( p_picture && p_picture->i_refcount == 0 );
1047 free( p_picture->p_data_orig );
1048 free( p_picture->p_sys );
1052 /*****************************************************************************
1054 *****************************************************************************/
1055 void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
1059 for( i = 0; i < p_src->i_planes ; i++ )
1060 plane_CopyPixels( p_dst->p+i, p_src->p+i );
1063 void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
1065 const unsigned i_width = __MIN( p_dst->i_visible_pitch,
1066 p_src->i_visible_pitch );
1067 const unsigned i_height = __MIN( p_dst->i_visible_lines,
1068 p_src->i_visible_lines );
1070 if( p_src->i_pitch == p_dst->i_pitch )
1072 /* There are margins, but with the same width : perfect ! */
1073 vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
1074 p_src->i_pitch * i_height );
1078 /* We need to proceed line by line */
1079 uint8_t *p_in = p_src->p_pixels;
1080 uint8_t *p_out = p_dst->p_pixels;
1086 for( i_line = i_height; i_line--; )
1088 vlc_memcpy( p_out, p_in, i_width );
1089 p_in += p_src->i_pitch;
1090 p_out += p_dst->i_pitch;
1095 /*****************************************************************************
1097 *****************************************************************************/