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/* Declarations which are public-facing, but private. See internal.h for
* declarations which are only used internally by vips and which are not
* externally visible.
*
* 6/7/09
* - from vips.h
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifndef VIPS_PRIVATE_H
#define VIPS_PRIVATE_H
#ifdef __cplusplus
extern "C" {
#endif /*__cplusplus*/
#define VIPS_SPARE (8)
/* Private to iofuncs: the minimum number of scanlines we add above and below
* the window as a margin for slop.
*/
#define VIPS__WINDOW_MARGIN_PIXELS (128)
/* Private to iofuncs: add at least this many bytes above and below the window.
* There's no point mapping just a few KB of a small image.
*/
#define VIPS__WINDOW_MARGIN_BYTES (1024 * 1024 * 10)
/* sizeof() a VIPS header on disc.
*/
#define VIPS_SIZEOF_HEADER (64)
/* What we track for each mmap window. Have a list of these on an openin
* VipsImage.
*/
typedef struct {
int ref_count; /* # of regions referencing us */
struct _VipsImage *im; /* VipsImage we are attached to */
int top; /* Area of image we have mapped, in pixels */
int height;
VipsPel *data; /* First pixel of line 'top' */
void *baseaddr; /* Base of window */
size_t length; /* Size of window */
} VipsWindow;
VIPS_API
int vips_window_unref(VipsWindow *window);
VIPS_API
void vips_window_print(VipsWindow *window);
/* Per-thread buffer state. Held in a GPrivate.
*/
typedef struct {
GHashTable *hash; /* VipsImage -> VipsBufferCache* */
GThread *thread; /* Just for sanity checking */
} VipsBufferThread;
/* Per-image buffer cache. This keeps a list of "done" VipsBuffer that this
* worker has generated. We use this to reuse results within a thread.
*
* Hash to this from VipsBufferThread::hash.
* We can't store the GSList directly in the hash table as GHashTable lacks an
* update operation and we'd need to _remove() and _insert() on every list
* operation.
*/
typedef struct _VipsBufferCache {
GSList *buffers; /* GSList of "done" VipsBuffer* */
GThread *thread; /* Just for sanity checking */
struct _VipsImage *im;
VipsBufferThread *buffer_thread;
GSList *reserve; /* VipsBuffer kept in reserve */
int n_reserve; /* Number in reserve */
} VipsBufferCache;
/* What we track for each pixel buffer. These can move between caches and
* between threads, but not between images.
*
* Moving between threads is difficult, use region ownership stuff.
*/
typedef struct _VipsBuffer {
int ref_count; /* # of regions referencing us */
struct _VipsImage *im; /* VipsImage we are attached to */
VipsRect area; /* Area this pixel buffer covers */
gboolean done; /* Calculated and in a cache */
VipsBufferCache *cache; /* The cache this buffer is published on */
VipsPel *buf; /* Private malloc() area */
size_t bsize; /* Size of private malloc() */
} VipsBuffer;
VIPS_API
void vips_buffer_dump_all(void);
VIPS_API
void vips_buffer_done(VipsBuffer *buffer);
VIPS_API
void vips_buffer_undone(VipsBuffer *buffer);
VIPS_API
void vips_buffer_unref(VipsBuffer *buffer);
VIPS_API
VipsBuffer *vips_buffer_new(struct _VipsImage *im, VipsRect *area);
VIPS_API
VipsBuffer *vips_buffer_ref(struct _VipsImage *im, VipsRect *area);
VIPS_API
VipsBuffer *vips_buffer_unref_ref(VipsBuffer *buffer,
struct _VipsImage *im, VipsRect *area);
VIPS_API
void vips_buffer_print(VipsBuffer *buffer);
void vips__render_shutdown(void);
/* Sections of region.h that are private to VIPS.
*/
/* Region types.
*/
typedef enum _RegionType {
VIPS_REGION_NONE,
VIPS_REGION_BUFFER, /* A VipsBuffer */
VIPS_REGION_OTHER_REGION, /* Memory on another region */
VIPS_REGION_OTHER_IMAGE, /* Memory on another image */
VIPS_REGION_WINDOW /* A VipsWindow on fd */
} RegionType;
/* Private to iofuncs: the size of the `tiles' requested by
* vips_image_generate() when acting as a data sink.
*/
#define VIPS__TILE_WIDTH (128)
#define VIPS__TILE_HEIGHT (128)
/* The height of the strips for the other two request styles.
*/
#define VIPS__THINSTRIP_HEIGHT (1)
#define VIPS__FATSTRIP_HEIGHT (16)
/* Functions on regions.
*/
struct _VipsRegion;
void vips__region_take_ownership(struct _VipsRegion *reg);
void vips__region_check_ownership(struct _VipsRegion *reg);
/* TODO(kleisauke): VIPS_API is required by vipsdisp.
*/
VIPS_API
void vips__region_no_ownership(struct _VipsRegion *reg);
typedef int (*VipsRegionFillFn)(struct _VipsRegion *, void *);
VIPS_API
int vips_region_fill(struct _VipsRegion *reg,
const VipsRect *r, VipsRegionFillFn fn, void *a);
int vips__image_wio_output(struct _VipsImage *image);
int vips__image_pio_output(struct _VipsImage *image);
/* VIPS_ARGUMENT_FOR_ALL() needs to have this visible.
*/
VIPS_API
VipsArgumentInstance *vips__argument_get_instance(
VipsArgumentClass *argument_class,
VipsObject *object);
VipsArgument *vips__argument_table_lookup(VipsArgumentTable *table,
GParamSpec *pspec);
/* im_demand_hint_array() needs to have this visible.
*/
#if VIPS_ENABLE_DEPRECATED
VIPS_API
#endif
void vips__demand_hint_array(struct _VipsImage *image,
int hint, struct _VipsImage **in);
/* im_cp_desc_array() needs to have this visible.
*/
#if VIPS_ENABLE_DEPRECATED
VIPS_API
#endif
int vips__image_copy_fields_array(struct _VipsImage *out,
struct _VipsImage *in[]);
void vips__region_count_pixels(struct _VipsRegion *region, const char *nickname);
VIPS_API
void vips_region_dump_all(void);
VIPS_API
int vips_region_prepare_many(struct _VipsRegion **reg, const VipsRect *r);
/* Handy for debugging.
*/
int vips__view_image(struct _VipsImage *image);
/* Pre 8.7 libvipses used this for allocating argument ids.
*/
VIPS_API
int _vips__argument_id;
void vips__meta_init(void);
// autoptr needs typed functions for autofree ... this needs to be in the
// public API since downstream projects can use our auto defs
VIPS_API
void VipsArrayDouble_unref(VipsArrayDouble *array);
VIPS_API
void VipsArrayImage_unref(VipsArrayImage *array);
#ifdef __cplusplus
}
#endif /*__cplusplus*/
#endif /*VIPS_PRIVATE_H*/