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blender-archive/source/blender/blenkernel/BKE_image.h

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2002-10-12 11:37:38 +00:00
/**
* blenlib/BKE_image.h (mar-2001 nzc)
*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
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*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
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*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
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*/
#ifndef BKE_IMAGE_H
#define BKE_IMAGE_H
#ifdef __cplusplus
extern "C" {
#endif
struct Image;
struct ImBuf;
struct Tex;
struct anim;
struct Scene;
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/* call from library */
void free_image(struct Image *me);
void BKE_stamp_info(struct Scene *scene, struct ImBuf *ibuf);
void BKE_stamp_buf(struct Scene *scene, unsigned char *rect, float *rectf, int width, int height, int channels);
int BKE_write_ibuf(struct Scene *scene, struct ImBuf *ibuf, char *name, int imtype, int subimtype, int quality);
void BKE_makepicstring(char *string, char *base, int frame, int imtype, int use_ext);
void BKE_add_image_extension(char *string, int imtype);
int BKE_ftype_to_imtype(int ftype);
int BKE_imtype_to_ftype(int imtype);
int BKE_imtype_is_movie(int imtype);
3D view orbit option: Around Active This fixes the active object in place when orbiting the view. Choppy 15fps demo can be seen there: http://www.elysiun.com/~theeth/bf/around_active.html Image Memory Grabage Collection This adds memory handling to the image code. An image is tagged each time it is used. During a collection cycle (frequency of cycles is user defined), if an image is older than a user defined limit, its buffer gets deallocated. This also applies to gl memory buffers. Images that are loading in GL memory needs to go through two time outs before being fully deallocated: the first time out deallocated the gl memorry, the second the buffer in ram. Notes: Image buffer loaded from python gets tagged as permanent upon load. That tag is removed when python stops using the image. I might have missed some tagging spots, especially in the rendering pipeline. Someone with more knowledge about this code should check to be careful. Tagging is done on every access, for rendering, this will probably be a performance hit. A scheme should be developped to only tag when the rendering is completed. Collecting is called in draw_object, most likely not the best place to do it. Safe from undo, since using undo deallocates memory anyway (like when loading a blend file with one currently opened) Userpref DNA changes: I've changed a couple of flagging variables from short to int. Some because they needed more space, others to keep SDNA happy. Info window changes: I've grouped a couple of buttons in aligned blocks and changed the color of mutually exclusive options to make them clearer. Matt didn't do any changes on that in tuhopuu, so hopefully I'm not stepping on anyone's feet with this. Also changed double constants into floats with f in a couple of places (mostly space.c) to make compiler happier.
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struct anim *openanim(char * name, int flags);
void converttopremul(struct ImBuf *ibuf);
void image_de_interlace(struct Image *ima, int odd);
void tag_image_time(struct Image *ima);
void free_old_images(void);
/* ********************************** NEW IMAGE API *********************** */
/* ImageUser is in Texture, in Nodes, Background Image, Image Window, .... */
/* should be used in conjunction with an ID * to Image. */
struct ImageUser;
struct RenderPass;
struct RenderResult;
/* ima->source; where image comes from */
#define IMA_SRC_CHECK 0
#define IMA_SRC_FILE 1
#define IMA_SRC_SEQUENCE 2
#define IMA_SRC_MOVIE 3
#define IMA_SRC_GENERATED 4
#define IMA_SRC_VIEWER 5
/* ima->type, how to handle/generate it */
#define IMA_TYPE_IMAGE 0
#define IMA_TYPE_MULTILAYER 1
/* generated */
#define IMA_TYPE_UV_TEST 2
/* viewers */
#define IMA_TYPE_R_RESULT 4
#define IMA_TYPE_COMPOSITE 5
/* ima->ok */
#define IMA_OK 1
#define IMA_OK_LOADED 2
/* signals */
/* reload only frees, doesn't read until image_get_ibuf() called */
#define IMA_SIGNAL_RELOAD 0
#define IMA_SIGNAL_FREE 1
/* pack signals are executed */
#define IMA_SIGNAL_PACK 2
#define IMA_SIGNAL_REPACK 3
#define IMA_SIGNAL_UNPACK 4
/* source changes, from image to sequence or movie, etc */
#define IMA_SIGNAL_SRC_CHANGE 5
/* image-user gets a new image, check settings */
#define IMA_SIGNAL_USER_NEW_IMAGE 6
/* depending Image type, and (optional) ImageUser setting it returns ibuf */
/* always call to make signals work */
struct ImBuf *BKE_image_get_ibuf(struct Image *ima, struct ImageUser *iuser);
Render & Compositing Thread Fixes * Rendering twice or more could crash layer/pass buttons. * Compositing would crash while drawing the image. * Rendering animations could also crash drawing the image. * Compositing could crash * Starting to rendering while preview render / compo was still running could crash. * Exiting while rendering an animation would not abort the renderer properly, making Blender seemingly freeze. * Fixes theoretically possible issue with setting malloc lock with nested threads. * Drawing previews inside nodes could crash when those nodes were being rendered at the same time. There's more crashes, manipulating the scene data or undo can still crash, this commit only focuses on making sure the image buffer and render result access is thread safe. Implementation: * Rather than assuming the render result does not get freed during render, which seems to be quite difficult to do given that e.g. the compositor is allowed to change the size of the buffer or output different passes, the render result is now protected with a read/write mutex. * The read/write mutex allows multiple readers (and pixel writers) at the same time, but only allows one writer to manipulate the data structure. * Added BKE_image_acquire_ibuf/BKE_image_release_ibuf to access images being rendered, cases where this is not needed (most code) can still use BKE_image_get_ibuf. * The job manager now allows only one rendering job at the same time, rather than the G.rendering check which was not reliable.
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/* same as above, but can be used to retrieve images being rendered in
* a thread safe way, always call both acquire and release */
struct ImBuf *BKE_image_acquire_ibuf(struct Image *ima, struct ImageUser *iuser, void **lock_r);
void BKE_image_release_ibuf(struct Image *ima, void *lock);
/* returns existing Image when filename/type is same (frame optional) */
struct Image *BKE_add_image_file(const char *name, int frame);
/* adds image, adds ibuf, generates color or pattern */
struct Image *BKE_add_image_size(int width, int height, char *name, int floatbuf, short uvtestgrid, float color[4]);
/* for reload, refresh, pack */
void BKE_image_signal(struct Image *ima, struct ImageUser *iuser, int signal);
/* ensures an Image exists for viewing nodes or render */
struct Image *BKE_image_verify_viewer(int type, const char *name);
/* force an ImBuf to become part of Image */
void BKE_image_assign_ibuf(struct Image *ima, struct ImBuf *ibuf);
/* called on frame change or before render */
void BKE_image_user_calc_imanr(struct ImageUser *iuser, int cfra, int fieldnr);
/* produce image export path */
int BKE_get_image_export_path(struct Image *im, const char *dest_dir, char *abs, int abs_size, char *rel, int rel_size);
/* fix things in ImageUser when new image gets assigned */
void BKE_image_user_new_image(struct Image *ima, struct ImageUser *iuser);
/* sets index offset for multilayer files */
struct RenderPass *BKE_image_multilayer_index(struct RenderResult *rr, struct ImageUser *iuser);
/* for multilayer images as well as for render-viewer */
Render & Compositing Thread Fixes * Rendering twice or more could crash layer/pass buttons. * Compositing would crash while drawing the image. * Rendering animations could also crash drawing the image. * Compositing could crash * Starting to rendering while preview render / compo was still running could crash. * Exiting while rendering an animation would not abort the renderer properly, making Blender seemingly freeze. * Fixes theoretically possible issue with setting malloc lock with nested threads. * Drawing previews inside nodes could crash when those nodes were being rendered at the same time. There's more crashes, manipulating the scene data or undo can still crash, this commit only focuses on making sure the image buffer and render result access is thread safe. Implementation: * Rather than assuming the render result does not get freed during render, which seems to be quite difficult to do given that e.g. the compositor is allowed to change the size of the buffer or output different passes, the render result is now protected with a read/write mutex. * The read/write mutex allows multiple readers (and pixel writers) at the same time, but only allows one writer to manipulate the data structure. * Added BKE_image_acquire_ibuf/BKE_image_release_ibuf to access images being rendered, cases where this is not needed (most code) can still use BKE_image_get_ibuf. * The job manager now allows only one rendering job at the same time, rather than the G.rendering check which was not reliable.
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struct RenderResult *BKE_image_acquire_renderresult(struct Scene *scene, struct Image *ima);
void BKE_image_release_renderresult(struct Scene *scene, struct Image *ima);
/* goes over all textures that use images */
void BKE_image_free_all_textures(void);
/* does one image! */
void BKE_image_free_anim_ibufs(struct Image *ima, int except_frame);
/* does all images with type MOVIE or SEQUENCE */
void BKE_image_all_free_anim_ibufs(int except_frame);
3D view orbit option: Around Active This fixes the active object in place when orbiting the view. Choppy 15fps demo can be seen there: http://www.elysiun.com/~theeth/bf/around_active.html Image Memory Grabage Collection This adds memory handling to the image code. An image is tagged each time it is used. During a collection cycle (frequency of cycles is user defined), if an image is older than a user defined limit, its buffer gets deallocated. This also applies to gl memory buffers. Images that are loading in GL memory needs to go through two time outs before being fully deallocated: the first time out deallocated the gl memorry, the second the buffer in ram. Notes: Image buffer loaded from python gets tagged as permanent upon load. That tag is removed when python stops using the image. I might have missed some tagging spots, especially in the rendering pipeline. Someone with more knowledge about this code should check to be careful. Tagging is done on every access, for rendering, this will probably be a performance hit. A scheme should be developped to only tag when the rendering is completed. Collecting is called in draw_object, most likely not the best place to do it. Safe from undo, since using undo deallocates memory anyway (like when loading a blend file with one currently opened) Userpref DNA changes: I've changed a couple of flagging variables from short to int. Some because they needed more space, others to keep SDNA happy. Info window changes: I've grouped a couple of buttons in aligned blocks and changed the color of mutually exclusive options to make them clearer. Matt didn't do any changes on that in tuhopuu, so hopefully I'm not stepping on anyone's feet with this. Also changed double constants into floats with f in a couple of places (mostly space.c) to make compiler happier.
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void BKE_image_memorypack(struct Image *ima);
3D view orbit option: Around Active This fixes the active object in place when orbiting the view. Choppy 15fps demo can be seen there: http://www.elysiun.com/~theeth/bf/around_active.html Image Memory Grabage Collection This adds memory handling to the image code. An image is tagged each time it is used. During a collection cycle (frequency of cycles is user defined), if an image is older than a user defined limit, its buffer gets deallocated. This also applies to gl memory buffers. Images that are loading in GL memory needs to go through two time outs before being fully deallocated: the first time out deallocated the gl memorry, the second the buffer in ram. Notes: Image buffer loaded from python gets tagged as permanent upon load. That tag is removed when python stops using the image. I might have missed some tagging spots, especially in the rendering pipeline. Someone with more knowledge about this code should check to be careful. Tagging is done on every access, for rendering, this will probably be a performance hit. A scheme should be developped to only tag when the rendering is completed. Collecting is called in draw_object, most likely not the best place to do it. Safe from undo, since using undo deallocates memory anyway (like when loading a blend file with one currently opened) Userpref DNA changes: I've changed a couple of flagging variables from short to int. Some because they needed more space, others to keep SDNA happy. Info window changes: I've grouped a couple of buttons in aligned blocks and changed the color of mutually exclusive options to make them clearer. Matt didn't do any changes on that in tuhopuu, so hopefully I'm not stepping on anyone's feet with this. Also changed double constants into floats with f in a couple of places (mostly space.c) to make compiler happier.
2005-07-06 00:33:41 +00:00
/* prints memory statistics for images */
void BKE_image_print_memlist(void);
/* empty image block, of similar type and filename */
struct Image *BKE_image_copy(struct Image *ima);
/* merge source into dest, and free source */
void BKE_image_merge(struct Image *dest, struct Image *source);
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#ifdef __cplusplus
}
#endif
#endif