c4cd62acee
Implement proper destructors that call the wayland destroy functions. With this and the "client: fix a strdup memory leak" patch in Wayland core, simple-shm now runs Valgrind-clean (memcheck). Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
276 lines
6.6 KiB
C
276 lines
6.6 KiB
C
/*
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* Copyright © 2011 Benjamin Franzke
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* Copyright © 2010 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <assert.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <signal.h>
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#include <wayland-client.h>
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#include <wayland-egl.h>
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struct display {
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struct wl_display *display;
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struct wl_compositor *compositor;
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struct wl_shell *shell;
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struct wl_shm *shm;
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uint32_t formats;
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uint32_t mask;
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};
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struct window {
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struct display *display;
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int width, height;
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struct wl_surface *surface;
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struct wl_shell_surface *shell_surface;
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struct wl_buffer *buffer;
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void *shm_data;
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struct wl_callback *callback;
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};
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static struct wl_buffer *
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create_shm_buffer(struct display *display,
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int width, int height, uint32_t format, void **data_out)
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{
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char filename[] = "/tmp/wayland-shm-XXXXXX";
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struct wl_buffer *buffer;
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int fd, size, stride;
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void *data;
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fd = mkstemp(filename);
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if (fd < 0) {
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fprintf(stderr, "open %s failed: %m\n", filename);
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return NULL;
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}
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stride = width * 4;
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size = stride * height;
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if (ftruncate(fd, size) < 0) {
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fprintf(stderr, "ftruncate failed: %m\n");
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close(fd);
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return NULL;
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}
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data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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unlink(filename);
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if (data == MAP_FAILED) {
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fprintf(stderr, "mmap failed: %m\n");
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close(fd);
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return NULL;
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}
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buffer = wl_shm_create_buffer(display->shm, fd,
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width, height, stride, format);
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close(fd);
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*data_out = data;
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return buffer;
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}
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static struct window *
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create_window(struct display *display, int width, int height)
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{
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struct window *window;
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window = malloc(sizeof *window);
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window->callback = NULL;
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window->display = display;
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window->width = width;
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window->height = height;
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window->surface = wl_compositor_create_surface(display->compositor);
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window->shell_surface = wl_shell_get_shell_surface(display->shell,
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window->surface);
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window->buffer = create_shm_buffer(display,
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width, height,
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WL_SHM_FORMAT_XRGB32,
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&window->shm_data);
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wl_shell_surface_set_toplevel(window->shell_surface);
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return window;
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}
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static void
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destroy_window(struct window *window)
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{
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if (window->callback)
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wl_callback_destroy(window->callback);
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wl_buffer_destroy(window->buffer);
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wl_shell_surface_destroy(window->shell_surface);
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wl_surface_destroy(window->surface);
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free(window);
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}
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static const struct wl_callback_listener frame_listener;
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static void
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redraw(void *data, struct wl_callback *callback, uint32_t time)
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{
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struct window *window = data;
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uint32_t *p;
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int i, end, offset;
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p = window->shm_data;
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end = window->width * window->height;
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offset = time >> 4;
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for (i = 0; i < end; i++)
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p[i] = (i + offset) * 0x0080401;
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wl_buffer_damage(window->buffer, 0, 0, window->width, window->height);
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wl_surface_attach(window->surface, window->buffer, 0, 0);
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wl_surface_damage(window->surface,
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0, 0, window->width, window->height);
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if (callback)
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wl_callback_destroy(callback);
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window->callback = wl_surface_frame(window->surface);
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wl_callback_add_listener(window->callback, &frame_listener, window);
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}
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static const struct wl_callback_listener frame_listener = {
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redraw
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};
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static void
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shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
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{
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struct display *d = data;
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d->formats |= (1 << format);
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}
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struct wl_shm_listener shm_listenter = {
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shm_format
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};
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static void
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display_handle_global(struct wl_display *display, uint32_t id,
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const char *interface, uint32_t version, void *data)
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{
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struct display *d = data;
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if (strcmp(interface, "wl_compositor") == 0) {
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d->compositor =
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wl_display_bind(display, id, &wl_compositor_interface);
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} else if (strcmp(interface, "wl_shell") == 0) {
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d->shell = wl_display_bind(display, id, &wl_shell_interface);
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} else if (strcmp(interface, "wl_shm") == 0) {
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d->shm = wl_display_bind(display, id, &wl_shm_interface);
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wl_shm_add_listener(d->shm, &shm_listenter, d);
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}
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}
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static int
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event_mask_update(uint32_t mask, void *data)
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{
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struct display *d = data;
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d->mask = mask;
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return 0;
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}
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static struct display *
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create_display(void)
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{
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struct display *display;
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display = malloc(sizeof *display);
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display->display = wl_display_connect(NULL);
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assert(display->display);
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display->formats = 0;
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wl_display_add_global_listener(display->display,
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display_handle_global, display);
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wl_display_iterate(display->display, WL_DISPLAY_READABLE);
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wl_display_roundtrip(display->display);
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if (!(display->formats & (1 << WL_SHM_FORMAT_XRGB32))) {
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fprintf(stderr, "WL_SHM_FORMAT_XRGB32 not available\n");
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exit(1);
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}
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wl_display_get_fd(display->display, event_mask_update, display);
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return display;
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}
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static void
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destroy_display(struct display *display)
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{
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if (display->shm)
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wl_shm_destroy(display->shm);
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if (display->shell)
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wl_shell_destroy(display->shell);
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if (display->compositor)
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wl_compositor_destroy(display->compositor);
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wl_display_destroy(display->display);
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free(display);
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}
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static int running = 1;
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static void
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signal_int(int signum)
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{
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running = 0;
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}
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int
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main(int argc, char **argv)
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{
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struct sigaction sigint;
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struct display *display;
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struct window *window;
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display = create_display();
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window = create_window(display, 250, 250);
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sigint.sa_handler = signal_int;
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sigemptyset(&sigint.sa_mask);
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sigint.sa_flags = SA_RESETHAND;
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sigaction(SIGINT, &sigint, NULL);
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redraw(window, NULL, 0);
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while (running)
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wl_display_iterate(display->display, display->mask);
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fprintf(stderr, "simple-shm exiting\n");
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destroy_window(window);
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destroy_display(display);
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return 0;
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}
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