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/*
* Copyright © 2008-2011 Kristian Høgsberg
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include <string.h>
#include <linux/input.h>
#include "compositor.h"
#include "screenshooter-server-protocol.h"
struct screenshooter {
struct wl_object base;
struct weston_compositor *ec;
struct wl_global *global;
struct wl_client *client;
struct weston_process screenshooter_process;
};
static void
screenshooter_shoot(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *output_resource,
struct wl_resource *buffer_resource)
{
struct weston_output *output = output_resource->data;
struct wl_buffer *buffer = buffer_resource->data;
uint8_t *tmp, *d, *s;
int32_t stride, i;
if (!wl_buffer_is_shm(buffer))
return;
if (buffer->width < output->current->width ||
buffer->height < output->current->height)
return;
stride = wl_shm_buffer_get_stride(buffer);
tmp = malloc(stride * buffer->height);
if (tmp == NULL) {
wl_resource_post_no_memory(resource);
return;
}
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glReadPixels(0, 0, output->current->width, output->current->height,
GL_BGRA_EXT, GL_UNSIGNED_BYTE, tmp);
d = wl_shm_buffer_get_data(buffer);
s = tmp + stride * (buffer->height - 1);
for (i = 0; i < buffer->height; i++) {
memcpy(d, s, stride);
d += stride;
s -= stride;
}
free(tmp);
}
struct screenshooter_interface screenshooter_implementation = {
screenshooter_shoot
};
static void
bind_shooter(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
struct screenshooter *shooter = data;
struct wl_resource *resource;
resource = wl_client_add_object(client, &screenshooter_interface,
&screenshooter_implementation, id, data);
if (client != shooter->client) {
wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
"screenshooter failed: permission denied");
wl_resource_destroy(resource, 0);
}
}
static void
screenshooter_sigchld(struct weston_process *process, int status)
{
struct screenshooter *shooter =
container_of(process, struct screenshooter, screenshooter_process);
shooter->client = NULL;
}
static void
screenshooter_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button, uint32_t axis,
int32_t state, void *data)
{
struct screenshooter *shooter = data;
const char *screenshooter_exe = LIBEXECDIR "/weston-screenshooter";
if (!shooter->client)
shooter->client = weston_client_launch(shooter->ec,
&shooter->screenshooter_process,
screenshooter_exe, screenshooter_sigchld);
}
struct screenshooter *
screenshooter_create(struct weston_compositor *ec)
{
struct screenshooter *shooter;
shooter = malloc(sizeof *shooter);
if (shooter == NULL)
return NULL;
shooter->base.interface = &screenshooter_interface;
shooter->base.implementation =
(void(**)(void)) &screenshooter_implementation;
shooter->ec = ec;
shooter->client = NULL;
shooter->global = wl_display_add_global(ec->wl_display,
&screenshooter_interface,
shooter, bind_shooter);
weston_compositor_add_binding(ec, KEY_S, 0, 0, MODIFIER_SUPER,
screenshooter_binding, shooter);
return shooter;
}
void
screenshooter_destroy(struct screenshooter *shooter)
{
wl_display_remove_global(shooter->ec->wl_display, shooter->global);
free(shooter);
}
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