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#include "evas_common.h"
#include "evas_engine.h"
static int _xcb_err = 0;
int
evas_software_8_x11_x_can_do_shm(xcb_connection_t * c, xcb_screen_t * screen)
{
static xcb_connection_t *cached_c = NULL;
static int cached_result = 0;
if (c == cached_c)
return cached_result;
cached_c = c;
if (xcb_get_extension_data(c, &xcb_shm_id))
{
X_Output_Buffer *xob;
xob = evas_software_8_x11_x_output_buffer_new
(c, screen, screen->root_depth, (unsigned char *)NULL,
16, 16, 2, NULL);
if (!xob)
{
cached_result = 0;
return 0;
}
evas_software_8_x11_x_output_buffer_free(xob, 1);
cached_result = 1;
return 1;
}
cached_result = 0;
return 0;
}
X_Output_Buffer *
evas_software_8_x11_x_output_buffer_new(xcb_connection_t * c,
xcb_screen_t * s,
int depth,
unsigned char *pal,
int w, int h, int try_shm, void *data)
{
X_Output_Buffer *xob;
xob = calloc(1, sizeof(X_Output_Buffer));
if (!xob)
return NULL;
xob->connection = c;
xob->screen = s;
xob->xim = NULL;
xob->shm_info = NULL;
xob->pal = pal;
if (try_shm > 0)
{
xob->shm_info = malloc(sizeof(xcb_shm_segment_info_t));
if (xob->shm_info)
{
xob->shm_info->shmseg = xcb_generate_id(c);
xob->xim = xcb_image_create_native(c, w, h,
XCB_IMAGE_FORMAT_Z_PIXMAP,
depth, NULL, ~0, NULL);
if (xob->xim)
{
int shmid = shmget
(IPC_PRIVATE, xob->xim->size, IPC_CREAT | 0777);
if (shmid >= 0)
{
xob->shm_info->shmid = shmid;
xob->shm_info->shmaddr = xob->xim->data =
shmat(xob->shm_info->shmid, 0, 0);
if (xob->shm_info->shmaddr)
{
/*
* FIXME: no error mechanism
*/
/* XErrorHandler ph; */
/* EventHandlers eh; */
free(xcb_get_input_focus_reply
(c, xcb_get_input_focus_unchecked(c), NULL));
_xcb_err = 0;
/* ph = XSetErrorHandler((XErrorHandler) */
/* x_output_tmp_x_err); */
xcb_shm_attach(c,
xob->shm_info->shmseg,
xob->shm_info->shmid, 0);
free(xcb_get_input_focus_reply
(c, xcb_get_input_focus_unchecked(c), NULL));
/* XSetErrorHandler((XErrorHandler)ph); */
if (!_xcb_err)
{
xob->im =
(Soft8_Image *)
evas_cache_image_data
(evas_common_soft8_image_cache_get(), w, h,
(DATA32 *) xob->xim->data, 0,
EVAS_COLORSPACE_GRY8);
if (xob->im)
xob->im->stride =
xob->xim->stride / sizeof(DATA8);
return xob;
}
}
shmdt(xob->shm_info->shmaddr);
shmctl(xob->shm_info->shmid, IPC_RMID, 0);
}
if (xob->xim)
xcb_image_destroy(xob->xim);
xob->xim = NULL;
}
if (xob->shm_info)
free(xob->shm_info);
xob->shm_info = NULL;
}
}
if (try_shm > 1)
return NULL;
xob->xim = xcb_image_create_native(c, w, h, XCB_IMAGE_FORMAT_Z_PIXMAP,
depth, NULL, ~0, NULL);
if (!xob->xim)
{
free(xob);
return NULL;
}
xob->data = data;
if (!xob->xim->data)
{
xob->xim->data = malloc(xob->xim->stride * xob->xim->height);
if (!xob->xim->data)
{
xcb_image_destroy(xob->xim);
free(xob);
return NULL;
}
}
if (xob->im)
evas_cache_image_drop(&xob->im->cache_entry);
xob->im =
(Soft8_Image *)
evas_cache_image_data(evas_common_soft8_image_cache_get(), w, h,
(DATA32 *) xob->xim->data, 0,
EVAS_COLORSPACE_GRY8);
if (xob->im)
xob->im->stride = xob->xim->stride / sizeof(DATA8);
return xob;
}
void
evas_software_8_x11_x_output_buffer_free(X_Output_Buffer * xob, int sync)
{
if (xob->shm_info)
{
if (sync)
free(xcb_get_input_focus_reply(xob->connection,
xcb_get_input_focus_unchecked(xob->
connection),
NULL));
xcb_shm_detach(xob->connection, xob->shm_info->shmseg);
xcb_image_destroy(xob->xim);
shmdt(xob->shm_info->shmaddr);
shmctl(xob->shm_info->shmid, IPC_RMID, 0);
free(xob->shm_info);
}
else
{
if (xob->data)
xob->xim->data = NULL;
free(xob->xim->data);
xcb_image_destroy(xob->xim);
}
free(xob);
}
void
evas_software_8_x11_x_output_buffer_paste(X_Output_Buffer * xob,
xcb_drawable_t d,
xcb_gcontext_t gc,
int x, int y, int w, int h, int sync)
{
unsigned char *data;
int i, j;
if (xob->shm_info)
{
for (i = y; i < y + h; i++)
{
data = xob->xim->data + i * xob->xim->width + x;
for (j = x; j < x + w; j++, data++)
*data = xob->pal[*data];
}
xcb_image_shm_put(xob->connection, d, gc,
xob->xim, *xob->shm_info, x, y, x, y, w, h, 0);
if (sync)
free(xcb_get_input_focus_reply(xob->connection,
xcb_get_input_focus_unchecked(xob->
connection),
NULL));
}
else
{
xcb_image_put(xob->connection, d, gc, xob->xim, x, y, 0);
}
}
DATA8 *
evas_software_8_x11_x_output_buffer_data(X_Output_Buffer * xob,
int *bytes_per_line_ret)
{
if (bytes_per_line_ret)
*bytes_per_line_ret = xob->xim->stride;
return (DATA8 *) xob->xim->data;
}
int
evas_software_8_x11_x_output_buffer_depth(X_Output_Buffer * xob)
{
return xob->xim->bpp;
}
int
evas_software_8_x11_x_output_buffer_byte_order(X_Output_Buffer * xob)
{
return xob->xim->byte_order;
}
int
evas_software_8_x11_x_output_buffer_bit_order(X_Output_Buffer * xob)
{
return xob->xim->bit_order;
}
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