File: //usr/include/xcb/shm.h
/*
* This file generated automatically from shm.xml by c_client.py.
* Edit at your peril.
*/
/**
* @defgroup XCB_Shm_API XCB Shm API
* @brief Shm XCB Protocol Implementation.
* @{
**/
#ifndef __SHM_H
#define __SHM_H
#include "xcb.h"
#include "xproto.h"
#ifdef __cplusplus
extern "C" {
#endif
#define XCB_SHM_MAJOR_VERSION 1
#define XCB_SHM_MINOR_VERSION 2
extern xcb_extension_t xcb_shm_id;
typedef uint32_t xcb_shm_seg_t;
/**
* @brief xcb_shm_seg_iterator_t
**/
typedef struct xcb_shm_seg_iterator_t {
xcb_shm_seg_t *data;
int rem;
int index;
} xcb_shm_seg_iterator_t;
/** Opcode for xcb_shm_completion. */
#define XCB_SHM_COMPLETION 0
/**
* @brief xcb_shm_completion_event_t
**/
typedef struct xcb_shm_completion_event_t {
uint8_t response_type;
uint8_t pad0;
uint16_t sequence;
xcb_drawable_t drawable;
uint16_t minor_event;
uint8_t major_event;
uint8_t pad1;
xcb_shm_seg_t shmseg;
uint32_t offset;
} xcb_shm_completion_event_t;
/** Opcode for xcb_shm_bad_seg. */
#define XCB_SHM_BAD_SEG 0
typedef xcb_value_error_t xcb_shm_bad_seg_error_t;
/**
* @brief xcb_shm_query_version_cookie_t
**/
typedef struct xcb_shm_query_version_cookie_t {
unsigned int sequence;
} xcb_shm_query_version_cookie_t;
/** Opcode for xcb_shm_query_version. */
#define XCB_SHM_QUERY_VERSION 0
/**
* @brief xcb_shm_query_version_request_t
**/
typedef struct xcb_shm_query_version_request_t {
uint8_t major_opcode;
uint8_t minor_opcode;
uint16_t length;
} xcb_shm_query_version_request_t;
/**
* @brief xcb_shm_query_version_reply_t
**/
typedef struct xcb_shm_query_version_reply_t {
uint8_t response_type;
uint8_t shared_pixmaps;
uint16_t sequence;
uint32_t length;
uint16_t major_version;
uint16_t minor_version;
uint16_t uid;
uint16_t gid;
uint8_t pixmap_format;
uint8_t pad0[15];
} xcb_shm_query_version_reply_t;
/** Opcode for xcb_shm_attach. */
#define XCB_SHM_ATTACH 1
/**
* @brief xcb_shm_attach_request_t
**/
typedef struct xcb_shm_attach_request_t {
uint8_t major_opcode;
uint8_t minor_opcode;
uint16_t length;
xcb_shm_seg_t shmseg;
uint32_t shmid;
uint8_t read_only;
uint8_t pad0[3];
} xcb_shm_attach_request_t;
/** Opcode for xcb_shm_detach. */
#define XCB_SHM_DETACH 2
/**
* @brief xcb_shm_detach_request_t
**/
typedef struct xcb_shm_detach_request_t {
uint8_t major_opcode;
uint8_t minor_opcode;
uint16_t length;
xcb_shm_seg_t shmseg;
} xcb_shm_detach_request_t;
/** Opcode for xcb_shm_put_image. */
#define XCB_SHM_PUT_IMAGE 3
/**
* @brief xcb_shm_put_image_request_t
**/
typedef struct xcb_shm_put_image_request_t {
uint8_t major_opcode;
uint8_t minor_opcode;
uint16_t length;
xcb_drawable_t drawable;
xcb_gcontext_t gc;
uint16_t total_width;
uint16_t total_height;
uint16_t src_x;
uint16_t src_y;
uint16_t src_width;
uint16_t src_height;
int16_t dst_x;
int16_t dst_y;
uint8_t depth;
uint8_t format;
uint8_t send_event;
uint8_t pad0;
xcb_shm_seg_t shmseg;
uint32_t offset;
} xcb_shm_put_image_request_t;
/**
* @brief xcb_shm_get_image_cookie_t
**/
typedef struct xcb_shm_get_image_cookie_t {
unsigned int sequence;
} xcb_shm_get_image_cookie_t;
/** Opcode for xcb_shm_get_image. */
#define XCB_SHM_GET_IMAGE 4
/**
* @brief xcb_shm_get_image_request_t
**/
typedef struct xcb_shm_get_image_request_t {
uint8_t major_opcode;
uint8_t minor_opcode;
uint16_t length;
xcb_drawable_t drawable;
int16_t x;
int16_t y;
uint16_t width;
uint16_t height;
uint32_t plane_mask;
uint8_t format;
uint8_t pad0[3];
xcb_shm_seg_t shmseg;
uint32_t offset;
} xcb_shm_get_image_request_t;
/**
* @brief xcb_shm_get_image_reply_t
**/
typedef struct xcb_shm_get_image_reply_t {
uint8_t response_type;
uint8_t depth;
uint16_t sequence;
uint32_t length;
xcb_visualid_t visual;
uint32_t size;
} xcb_shm_get_image_reply_t;
/** Opcode for xcb_shm_create_pixmap. */
#define XCB_SHM_CREATE_PIXMAP 5
/**
* @brief xcb_shm_create_pixmap_request_t
**/
typedef struct xcb_shm_create_pixmap_request_t {
uint8_t major_opcode;
uint8_t minor_opcode;
uint16_t length;
xcb_pixmap_t pid;
xcb_drawable_t drawable;
uint16_t width;
uint16_t height;
uint8_t depth;
uint8_t pad0[3];
xcb_shm_seg_t shmseg;
uint32_t offset;
} xcb_shm_create_pixmap_request_t;
/** Opcode for xcb_shm_attach_fd. */
#define XCB_SHM_ATTACH_FD 6
/**
* @brief xcb_shm_attach_fd_request_t
**/
typedef struct xcb_shm_attach_fd_request_t {
uint8_t major_opcode;
uint8_t minor_opcode;
uint16_t length;
xcb_shm_seg_t shmseg;
uint8_t read_only;
uint8_t pad0[3];
} xcb_shm_attach_fd_request_t;
/**
* @brief xcb_shm_create_segment_cookie_t
**/
typedef struct xcb_shm_create_segment_cookie_t {
unsigned int sequence;
} xcb_shm_create_segment_cookie_t;
/** Opcode for xcb_shm_create_segment. */
#define XCB_SHM_CREATE_SEGMENT 7
/**
* @brief xcb_shm_create_segment_request_t
**/
typedef struct xcb_shm_create_segment_request_t {
uint8_t major_opcode;
uint8_t minor_opcode;
uint16_t length;
xcb_shm_seg_t shmseg;
uint32_t size;
uint8_t read_only;
uint8_t pad0[3];
} xcb_shm_create_segment_request_t;
/**
* @brief xcb_shm_create_segment_reply_t
**/
typedef struct xcb_shm_create_segment_reply_t {
uint8_t response_type;
uint8_t nfd;
uint16_t sequence;
uint32_t length;
uint8_t pad0[24];
} xcb_shm_create_segment_reply_t;
/**
* Get the next element of the iterator
* @param i Pointer to a xcb_shm_seg_iterator_t
*
* Get the next element in the iterator. The member rem is
* decreased by one. The member data points to the next
* element. The member index is increased by sizeof(xcb_shm_seg_t)
*/
void
xcb_shm_seg_next (xcb_shm_seg_iterator_t *i);
/**
* Return the iterator pointing to the last element
* @param i An xcb_shm_seg_iterator_t
* @return The iterator pointing to the last element
*
* Set the current element in the iterator to the last element.
* The member rem is set to 0. The member data points to the
* last element.
*/
xcb_generic_iterator_t
xcb_shm_seg_end (xcb_shm_seg_iterator_t i);
/**
* @brief Query the version of the MIT-SHM extension.
*
* @param c The connection
* @return A cookie
*
* This is used to determine the version of the MIT-SHM extension supported by the
* X server. Clients MUST NOT make other requests in this extension until a reply
* to this requests indicates the X server supports them.
*
*/
xcb_shm_query_version_cookie_t
xcb_shm_query_version (xcb_connection_t *c);
/**
* @brief Query the version of the MIT-SHM extension.
*
* @param c The connection
* @return A cookie
*
* This is used to determine the version of the MIT-SHM extension supported by the
* X server. Clients MUST NOT make other requests in this extension until a reply
* to this requests indicates the X server supports them.
*
* This form can be used only if the request will cause
* a reply to be generated. Any returned error will be
* placed in the event queue.
*/
xcb_shm_query_version_cookie_t
xcb_shm_query_version_unchecked (xcb_connection_t *c);
/**
* Return the reply
* @param c The connection
* @param cookie The cookie
* @param e The xcb_generic_error_t supplied
*
* Returns the reply of the request asked by
*
* The parameter @p e supplied to this function must be NULL if
* xcb_shm_query_version_unchecked(). is used.
* Otherwise, it stores the error if any.
*
* The returned value must be freed by the caller using free().
*/
xcb_shm_query_version_reply_t *
xcb_shm_query_version_reply (xcb_connection_t *c,
xcb_shm_query_version_cookie_t cookie /**< */,
xcb_generic_error_t **e);
/**
* @brief Attach a System V shared memory segment.
*
* @param c The connection
* @param shmseg A shared memory segment ID created with xcb_generate_id().
* @param shmid The System V shared memory segment the server should map.
* @param read_only True if the segment shall be mapped read only by the X11 server, otherwise false.
* @return A cookie
*
* Attach a System V shared memory segment to the server. This will fail unless
* the server has permission to map the segment. The client may destroy the segment
* as soon as it receives a XCB_SHM_COMPLETION event with the shmseg value in this
* request and with the appropriate serial number.
*
* This form can be used only if the request will not cause
* a reply to be generated. Any returned error will be
* saved for handling by xcb_request_check().
*/
xcb_void_cookie_t
xcb_shm_attach_checked (xcb_connection_t *c,
xcb_shm_seg_t shmseg,
uint32_t shmid,
uint8_t read_only);
/**
* @brief Attach a System V shared memory segment.
*
* @param c The connection
* @param shmseg A shared memory segment ID created with xcb_generate_id().
* @param shmid The System V shared memory segment the server should map.
* @param read_only True if the segment shall be mapped read only by the X11 server, otherwise false.
* @return A cookie
*
* Attach a System V shared memory segment to the server. This will fail unless
* the server has permission to map the segment. The client may destroy the segment
* as soon as it receives a XCB_SHM_COMPLETION event with the shmseg value in this
* request and with the appropriate serial number.
*
*/
xcb_void_cookie_t
xcb_shm_attach (xcb_connection_t *c,
xcb_shm_seg_t shmseg,
uint32_t shmid,
uint8_t read_only);
/**
* @brief Destroys the specified shared memory segment.
*
* @param c The connection
* @param shmseg The segment to be destroyed.
* @return A cookie
*
* Destroys the specified shared memory segment. This will never fail unless the
* segment number is incorrect.
*
* This form can be used only if the request will not cause
* a reply to be generated. Any returned error will be
* saved for handling by xcb_request_check().
*/
xcb_void_cookie_t
xcb_shm_detach_checked (xcb_connection_t *c,
xcb_shm_seg_t shmseg);
/**
* @brief Destroys the specified shared memory segment.
*
* @param c The connection
* @param shmseg The segment to be destroyed.
* @return A cookie
*
* Destroys the specified shared memory segment. This will never fail unless the
* segment number is incorrect.
*
*/
xcb_void_cookie_t
xcb_shm_detach (xcb_connection_t *c,
xcb_shm_seg_t shmseg);
/**
* @brief Copy data from the shared memory to the specified drawable.
*
* @param c The connection
* @param drawable The drawable to draw to.
* @param gc The graphics context to use.
* @param total_width The total width of the source image.
* @param total_height The total height of the source image.
* @param src_x The source X coordinate of the sub-image to copy.
* @param src_y The source Y coordinate of the sub-image to copy.
* @param src_width The width, in source image coordinates, of the data to copy from the source.
* The X server will use this to determine the amount of data to copy. The amount
* of the destination image that is overwritten is determined automatically.
* @param src_height The height, in source image coordinates, of the data to copy from the source.
* The X server will use this to determine the amount of data to copy. The amount
* of the destination image that is overwritten is determined automatically.
* @param dst_x The X coordinate on the destination drawable to copy to.
* @param dst_y The Y coordinate on the destination drawable to copy to.
* @param depth The depth to use.
* @param format The format of the image being drawn. If it is XYBitmap, depth must be 1, or a
* “BadMatch” error results. The foreground pixel in the GC determines the source
* for the one bits in the image, and the background pixel determines the source
* for the zero bits. For XYPixmap and ZPixmap, the depth must match the depth of
* the drawable, or a “BadMatch” error results.
* @param send_event True if the server should send an XCB_SHM_COMPLETION event when the blit
* completes.
* @param offset The offset that the source image starts at.
* @return A cookie
*
* Copy data from the shared memory to the specified drawable. The amount of bytes
* written to the destination image is always equal to the number of bytes read
* from the shared memory segment.
*
* This form can be used only if the request will not cause
* a reply to be generated. Any returned error will be
* saved for handling by xcb_request_check().
*/
xcb_void_cookie_t
xcb_shm_put_image_checked (xcb_connection_t *c,
xcb_drawable_t drawable,
xcb_gcontext_t gc,
uint16_t total_width,
uint16_t total_height,
uint16_t src_x,
uint16_t src_y,
uint16_t src_width,
uint16_t src_height,
int16_t dst_x,
int16_t dst_y,
uint8_t depth,
uint8_t format,
uint8_t send_event,
xcb_shm_seg_t shmseg,
uint32_t offset);
/**
* @brief Copy data from the shared memory to the specified drawable.
*
* @param c The connection
* @param drawable The drawable to draw to.
* @param gc The graphics context to use.
* @param total_width The total width of the source image.
* @param total_height The total height of the source image.
* @param src_x The source X coordinate of the sub-image to copy.
* @param src_y The source Y coordinate of the sub-image to copy.
* @param src_width The width, in source image coordinates, of the data to copy from the source.
* The X server will use this to determine the amount of data to copy. The amount
* of the destination image that is overwritten is determined automatically.
* @param src_height The height, in source image coordinates, of the data to copy from the source.
* The X server will use this to determine the amount of data to copy. The amount
* of the destination image that is overwritten is determined automatically.
* @param dst_x The X coordinate on the destination drawable to copy to.
* @param dst_y The Y coordinate on the destination drawable to copy to.
* @param depth The depth to use.
* @param format The format of the image being drawn. If it is XYBitmap, depth must be 1, or a
* “BadMatch” error results. The foreground pixel in the GC determines the source
* for the one bits in the image, and the background pixel determines the source
* for the zero bits. For XYPixmap and ZPixmap, the depth must match the depth of
* the drawable, or a “BadMatch” error results.
* @param send_event True if the server should send an XCB_SHM_COMPLETION event when the blit
* completes.
* @param offset The offset that the source image starts at.
* @return A cookie
*
* Copy data from the shared memory to the specified drawable. The amount of bytes
* written to the destination image is always equal to the number of bytes read
* from the shared memory segment.
*
*/
xcb_void_cookie_t
xcb_shm_put_image (xcb_connection_t *c,
xcb_drawable_t drawable,
xcb_gcontext_t gc,
uint16_t total_width,
uint16_t total_height,
uint16_t src_x,
uint16_t src_y,
uint16_t src_width,
uint16_t src_height,
int16_t dst_x,
int16_t dst_y,
uint8_t depth,
uint8_t format,
uint8_t send_event,
xcb_shm_seg_t shmseg,
uint32_t offset);
/**
* @brief Copies data from the specified drawable to the shared memory segment.
*
* @param c The connection
* @param drawable The drawable to copy the image out of.
* @param x The X coordinate in the drawable to begin copying at.
* @param y The Y coordinate in the drawable to begin copying at.
* @param width The width of the image to copy.
* @param height The height of the image to copy.
* @param plane_mask A mask that determines which planes are used.
* @param format The format to use for the copy (???).
* @param shmseg The destination shared memory segment.
* @param offset The offset in the shared memory segment to copy data to.
* @return A cookie
*
* Copy data from the specified drawable to the shared memory segment. The amount
* of bytes written to the destination image is always equal to the number of bytes
* read from the shared memory segment.
*
*/
xcb_shm_get_image_cookie_t
xcb_shm_get_image (xcb_connection_t *c,
xcb_drawable_t drawable,
int16_t x,
int16_t y,
uint16_t width,
uint16_t height,
uint32_t plane_mask,
uint8_t format,
xcb_shm_seg_t shmseg,
uint32_t offset);
/**
* @brief Copies data from the specified drawable to the shared memory segment.
*
* @param c The connection
* @param drawable The drawable to copy the image out of.
* @param x The X coordinate in the drawable to begin copying at.
* @param y The Y coordinate in the drawable to begin copying at.
* @param width The width of the image to copy.
* @param height The height of the image to copy.
* @param plane_mask A mask that determines which planes are used.
* @param format The format to use for the copy (???).
* @param shmseg The destination shared memory segment.
* @param offset The offset in the shared memory segment to copy data to.
* @return A cookie
*
* Copy data from the specified drawable to the shared memory segment. The amount
* of bytes written to the destination image is always equal to the number of bytes
* read from the shared memory segment.
*
* This form can be used only if the request will cause
* a reply to be generated. Any returned error will be
* placed in the event queue.
*/
xcb_shm_get_image_cookie_t
xcb_shm_get_image_unchecked (xcb_connection_t *c,
xcb_drawable_t drawable,
int16_t x,
int16_t y,
uint16_t width,
uint16_t height,
uint32_t plane_mask,
uint8_t format,
xcb_shm_seg_t shmseg,
uint32_t offset);
/**
* Return the reply
* @param c The connection
* @param cookie The cookie
* @param e The xcb_generic_error_t supplied
*
* Returns the reply of the request asked by
*
* The parameter @p e supplied to this function must be NULL if
* xcb_shm_get_image_unchecked(). is used.
* Otherwise, it stores the error if any.
*
* The returned value must be freed by the caller using free().
*/
xcb_shm_get_image_reply_t *
xcb_shm_get_image_reply (xcb_connection_t *c,
xcb_shm_get_image_cookie_t cookie /**< */,
xcb_generic_error_t **e);
/**
* @brief Create a pixmap backed by shared memory.
*
* @param c The connection
* @param pid A pixmap ID created with xcb_generate_id().
* @param drawable The drawable to create the pixmap in.
* @param width The width of the pixmap to create. Must be nonzero, or a Value error results.
* @param height The height of the pixmap to create. Must be nonzero, or a Value error results.
* @param depth The depth of the pixmap to create. Must be nonzero, or a Value error results.
* @param shmseg The shared memory segment to use to create the pixmap.
* @param offset The offset in the segment to create the pixmap at.
* @return A cookie
*
* Create a pixmap backed by shared memory. Writes to the shared memory will be
* reflected in the contents of the pixmap, and writes to the pixmap will be
* reflected in the contents of the shared memory.
*
* This form can be used only if the request will not cause
* a reply to be generated. Any returned error will be
* saved for handling by xcb_request_check().
*/
xcb_void_cookie_t
xcb_shm_create_pixmap_checked (xcb_connection_t *c,
xcb_pixmap_t pid,
xcb_drawable_t drawable,
uint16_t width,
uint16_t height,
uint8_t depth,
xcb_shm_seg_t shmseg,
uint32_t offset);
/**
* @brief Create a pixmap backed by shared memory.
*
* @param c The connection
* @param pid A pixmap ID created with xcb_generate_id().
* @param drawable The drawable to create the pixmap in.
* @param width The width of the pixmap to create. Must be nonzero, or a Value error results.
* @param height The height of the pixmap to create. Must be nonzero, or a Value error results.
* @param depth The depth of the pixmap to create. Must be nonzero, or a Value error results.
* @param shmseg The shared memory segment to use to create the pixmap.
* @param offset The offset in the segment to create the pixmap at.
* @return A cookie
*
* Create a pixmap backed by shared memory. Writes to the shared memory will be
* reflected in the contents of the pixmap, and writes to the pixmap will be
* reflected in the contents of the shared memory.
*
*/
xcb_void_cookie_t
xcb_shm_create_pixmap (xcb_connection_t *c,
xcb_pixmap_t pid,
xcb_drawable_t drawable,
uint16_t width,
uint16_t height,
uint8_t depth,
xcb_shm_seg_t shmseg,
uint32_t offset);
/**
* @brief Create a shared memory segment
*
* @param c The connection
* @param shmseg A shared memory segment ID created with xcb_generate_id().
* @param shm_fd The file descriptor the server should mmap().
* @param read_only True if the segment shall be mapped read only by the X11 server, otherwise false.
* @return A cookie
*
* Create a shared memory segment. The file descriptor will be mapped at offset
* zero, and the size will be obtained using fstat(). A zero size will result in a
* Value error.
*
* This form can be used only if the request will not cause
* a reply to be generated. Any returned error will be
* saved for handling by xcb_request_check().
*/
xcb_void_cookie_t
xcb_shm_attach_fd_checked (xcb_connection_t *c,
xcb_shm_seg_t shmseg,
int32_t shm_fd,
uint8_t read_only);
/**
* @brief Create a shared memory segment
*
* @param c The connection
* @param shmseg A shared memory segment ID created with xcb_generate_id().
* @param shm_fd The file descriptor the server should mmap().
* @param read_only True if the segment shall be mapped read only by the X11 server, otherwise false.
* @return A cookie
*
* Create a shared memory segment. The file descriptor will be mapped at offset
* zero, and the size will be obtained using fstat(). A zero size will result in a
* Value error.
*
*/
xcb_void_cookie_t
xcb_shm_attach_fd (xcb_connection_t *c,
xcb_shm_seg_t shmseg,
int32_t shm_fd,
uint8_t read_only);
/**
* @brief Asks the server to allocate a shared memory segment.
*
* @param c The connection
* @param shmseg A shared memory segment ID created with xcb_generate_id().
* @param size The size of the segment to create.
* @param read_only True if the server should map the segment read-only; otherwise false.
* @return A cookie
*
* Asks the server to allocate a shared memory segment. The server’s reply will
* include a file descriptor for the client to pass to mmap().
*
*/
xcb_shm_create_segment_cookie_t
xcb_shm_create_segment (xcb_connection_t *c,
xcb_shm_seg_t shmseg,
uint32_t size,
uint8_t read_only);
/**
* @brief Asks the server to allocate a shared memory segment.
*
* @param c The connection
* @param shmseg A shared memory segment ID created with xcb_generate_id().
* @param size The size of the segment to create.
* @param read_only True if the server should map the segment read-only; otherwise false.
* @return A cookie
*
* Asks the server to allocate a shared memory segment. The server’s reply will
* include a file descriptor for the client to pass to mmap().
*
* This form can be used only if the request will cause
* a reply to be generated. Any returned error will be
* placed in the event queue.
*/
xcb_shm_create_segment_cookie_t
xcb_shm_create_segment_unchecked (xcb_connection_t *c,
xcb_shm_seg_t shmseg,
uint32_t size,
uint8_t read_only);
/**
* Return the reply
* @param c The connection
* @param cookie The cookie
* @param e The xcb_generic_error_t supplied
*
* Returns the reply of the request asked by
*
* The parameter @p e supplied to this function must be NULL if
* xcb_shm_create_segment_unchecked(). is used.
* Otherwise, it stores the error if any.
*
* The returned value must be freed by the caller using free().
*/
xcb_shm_create_segment_reply_t *
xcb_shm_create_segment_reply (xcb_connection_t *c,
xcb_shm_create_segment_cookie_t cookie /**< */,
xcb_generic_error_t **e);
/**
* Return the reply fds
* @param c The connection
* @param reply The reply
*
* Returns a pointer to the array of reply fds of the reply.
*
* The returned value points into the reply and must not be free().
* The fds are not managed by xcb. You must close() them before freeing the reply.
*/
int *
xcb_shm_create_segment_reply_fds (xcb_connection_t *c /**< */,
xcb_shm_create_segment_reply_t *reply);
#ifdef __cplusplus
}
#endif
#endif
/**
* @}
*/