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weston/clients/simple-dmabuf.c

591 lines
14 KiB

/*
* Copyright © 2011 Benjamin Franzke
* Copyright © 2010 Intel Corporation
* Copyright © 2014 Collabora Ltd.
*
* 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 <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <assert.h>
#include <unistd.h>
#include <sys/mman.h>
#include <signal.h>
#include <fcntl.h>
#include <xf86drm.h>
#include <libdrm/i915_drm.h>
#include <libdrm/intel_bufmgr.h>
#include <libdrm/drm_fourcc.h>
#include <wayland-client.h>
#include "xdg-shell-client-protocol.h"
#include "fullscreen-shell-unstable-v1-client-protocol.h"
#include "linux-dmabuf-unstable-v1-client-protocol.h"
struct display {
struct wl_display *display;
struct wl_registry *registry;
struct wl_compositor *compositor;
struct xdg_shell *shell;
struct zwp_fullscreen_shell_v1 *fshell;
struct zwp_linux_dmabuf_v1 *dmabuf;
int xrgb8888_format_found;
};
struct buffer {
struct wl_buffer *buffer;
int busy;
int drm_fd;
drm_intel_bufmgr *bufmgr;
drm_intel_bo *bo;
uint32_t gem_handle;
int dmabuf_fd;
uint8_t *mmap;
int width;
int height;
int bpp;
unsigned long stride;
};
struct window {
struct display *display;
int width, height;
struct wl_surface *surface;
struct xdg_surface *xdg_surface;
struct buffer buffers[2];
struct buffer *prev_buffer;
struct wl_callback *callback;
};
static int running = 1;
static void
buffer_release(void *data, struct wl_buffer *buffer)
{
struct buffer *mybuf = data;
mybuf->busy = 0;
}
static const struct wl_buffer_listener buffer_listener = {
buffer_release
};
static int
drm_connect(struct buffer *my_buf)
{
/* This won't work with card0 as we need to be authenticated; instead,
* boot with drm.rnodes=1 and use that. */
my_buf->drm_fd = open("/dev/dri/renderD128", O_RDWR);
if (my_buf->drm_fd < 0)
return 0;
my_buf->bufmgr = drm_intel_bufmgr_gem_init(my_buf->drm_fd, 32);
if (!my_buf->bufmgr)
return 0;
return 1;
}
static void
drm_shutdown(struct buffer *my_buf)
{
drm_intel_bufmgr_destroy(my_buf->bufmgr);
close(my_buf->drm_fd);
}
static int
alloc_bo(struct buffer *my_buf)
{
/* XXX: try different tiling modes for testing FB modifiers. */
uint32_t tiling = I915_TILING_NONE;
assert(my_buf->bufmgr);
my_buf->bo = drm_intel_bo_alloc_tiled(my_buf->bufmgr, "test",
my_buf->width, my_buf->height,
(my_buf->bpp / 8), &tiling,
&my_buf->stride, 0);
printf("buffer allocated w %d, h %d, stride %lu, size %lu\n",
my_buf->width, my_buf->height, my_buf->stride, my_buf->bo->size);
if (!my_buf->bo)
return 0;
if (tiling != I915_TILING_NONE)
return 0;
return 1;
}
static void
free_bo(struct buffer *my_buf)
{
drm_intel_bo_unreference(my_buf->bo);
}
static int
map_bo(struct buffer *my_buf)
{
if (drm_intel_gem_bo_map_gtt(my_buf->bo) != 0)
return 0;
my_buf->mmap = my_buf->bo->virtual;
return 1;
}
static void
fill_content(struct buffer *my_buf)
{
int x = 0, y = 0;
uint32_t *pix;
assert(my_buf->mmap);
for (y = 0; y < my_buf->height; y++) {
pix = (uint32_t *)(my_buf->mmap + y * my_buf->stride);
for (x = 0; x < my_buf->width; x++) {
*pix++ = (0xff << 24) | ((x % 256) << 16) |
((y % 256) << 8) | 0xf0;
}
}
}
static void
unmap_bo(struct buffer *my_buf)
{
drm_intel_gem_bo_unmap_gtt(my_buf->bo);
}
static void
create_succeeded(void *data,
struct zwp_linux_buffer_params_v1 *params,
struct wl_buffer *new_buffer)
{
struct buffer *buffer = data;
buffer->buffer = new_buffer;
wl_buffer_add_listener(buffer->buffer, &buffer_listener, buffer);
zwp_linux_buffer_params_v1_destroy(params);
}
static void
create_failed(void *data, struct zwp_linux_buffer_params_v1 *params)
{
struct buffer *buffer = data;
buffer->buffer = NULL;
zwp_linux_buffer_params_v1_destroy(params);
fprintf(stderr, "Error: zwp_linux_buffer_params.create failed.\n");
}
static const struct zwp_linux_buffer_params_v1_listener params_listener = {
create_succeeded,
create_failed
};
static int
create_dmabuf_buffer(struct display *display, struct buffer *buffer,
int width, int height)
{
struct zwp_linux_buffer_params_v1 *params;
uint64_t modifier;
uint32_t flags;
if (!drm_connect(buffer)) {
fprintf(stderr, "drm_connect failed\n");
goto error;
}
buffer->width = width;
buffer->height = height;
buffer->bpp = 32; /* hardcoded XRGB8888 format */
if (!alloc_bo(buffer)) {
fprintf(stderr, "alloc_bo failed\n");
goto error1;
}
if (!map_bo(buffer)) {
fprintf(stderr, "map_bo failed\n");
goto error2;
}
fill_content(buffer);
unmap_bo(buffer);
if (drm_intel_bo_gem_export_to_prime(buffer->bo, &buffer->dmabuf_fd) != 0) {
fprintf(stderr, "drm_intel_bo_gem_export_to_prime failed\n");
goto error2;
}
if (buffer->dmabuf_fd < 0) {
fprintf(stderr, "error: dmabuf_fd < 0\n");
goto error2;
}
/* We now have a dmabuf! It should contain 2x2 tiles (i.e. each tile
* is 256x256) of misc colours, and be mappable, either as ARGB8888, or
* XRGB8888. */
modifier = 0;
flags = 0;
params = zwp_linux_dmabuf_v1_create_params(display->dmabuf);
zwp_linux_buffer_params_v1_add(params,
buffer->dmabuf_fd,
0, /* plane_idx */
0, /* offset */
buffer->stride,
modifier >> 32,
modifier & 0xffffffff);
zwp_linux_buffer_params_v1_add_listener(params, &params_listener, buffer);
zwp_linux_buffer_params_v1_create(params,
buffer->width,
buffer->height,
DRM_FORMAT_XRGB8888,
flags);
/* params is destroyed by the event handlers */
wl_display_roundtrip(display->display);
if (buffer->buffer == NULL) {
goto error2;
}
return 0;
error2:
free_bo(buffer);
error1:
drm_shutdown(buffer);
error:
return -1;
}
static void
handle_configure(void *data, struct xdg_surface *surface,
int32_t width, int32_t height,
struct wl_array *states, uint32_t serial)
{
}
static void
handle_delete(void *data, struct xdg_surface *xdg_surface)
{
running = 0;
}
static const struct xdg_surface_listener xdg_surface_listener = {
handle_configure,
handle_delete,
};
static struct window *
create_window(struct display *display, int width, int height)
{
struct window *window;
window = calloc(1, sizeof *window);
if (!window)
return NULL;
window->callback = NULL;
window->display = display;
window->width = width;
window->height = height;
window->surface = wl_compositor_create_surface(display->compositor);
if (display->shell) {
window->xdg_surface =
xdg_shell_get_xdg_surface(display->shell,
window->surface);
assert(window->xdg_surface);
xdg_surface_add_listener(window->xdg_surface,
&xdg_surface_listener, window);
xdg_surface_set_title(window->xdg_surface, "simple-dmabuf");
} else if (display->fshell) {
zwp_fullscreen_shell_v1_present_surface(display->fshell,
window->surface,
ZWP_FULLSCREEN_SHELL_V1_PRESENT_METHOD_DEFAULT,
NULL);
} else {
assert(0);
}
return window;
}
static void
destroy_window(struct window *window)
{
int i;
if (window->callback)
wl_callback_destroy(window->callback);
for (i = 0; i < 2; i++) {
if (!window->buffers[i].buffer)
continue;
wl_buffer_destroy(window->buffers[i].buffer);
free_bo(&window->buffers[i]);
close(window->buffers[i].dmabuf_fd);
drm_shutdown(&window->buffers[i]);
}
if (window->xdg_surface)
xdg_surface_destroy(window->xdg_surface);
wl_surface_destroy(window->surface);
free(window);
}
static struct buffer *
window_next_buffer(struct window *window)
{
struct buffer *buffer;
int ret = 0;
if (!window->buffers[0].busy)
buffer = &window->buffers[0];
else if (!window->buffers[1].busy)
buffer = &window->buffers[1];
else
return NULL;
if (!buffer->buffer) {
ret = create_dmabuf_buffer(window->display, buffer,
window->width, window->height);
if (ret < 0)
return NULL;
}
return buffer;
}
static const struct wl_callback_listener frame_listener;
static void
redraw(void *data, struct wl_callback *callback, uint32_t time)
{
struct window *window = data;
struct buffer *buffer;
buffer = window_next_buffer(window);
if (!buffer) {
fprintf(stderr,
!callback ? "Failed to create the first buffer.\n" :
"Both buffers busy at redraw(). Server bug?\n");
abort();
}
/* XXX: would be nice to draw something that changes here... */
wl_surface_attach(window->surface, buffer->buffer, 0, 0);
wl_surface_damage(window->surface, 0, 0, window->width, window->height);
if (callback)
wl_callback_destroy(callback);
window->callback = wl_surface_frame(window->surface);
wl_callback_add_listener(window->callback, &frame_listener, window);
wl_surface_commit(window->surface);
buffer->busy = 1;
}
static const struct wl_callback_listener frame_listener = {
redraw
};
static void
dmabuf_format(void *data, struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf, uint32_t format)
{
struct display *d = data;
if (format == DRM_FORMAT_XRGB8888)
d->xrgb8888_format_found = 1;
}
static const struct zwp_linux_dmabuf_v1_listener dmabuf_listener = {
dmabuf_format
};
static void
xdg_shell_ping(void *data, struct xdg_shell *shell, uint32_t serial)
{
xdg_shell_pong(shell, serial);
}
static const struct xdg_shell_listener xdg_shell_listener = {
xdg_shell_ping,
};
#define XDG_VERSION 5 /* The version of xdg-shell that we implement */
#ifdef static_assert
static_assert(XDG_VERSION == XDG_SHELL_VERSION_CURRENT,
"Interface version doesn't match implementation version");
#endif
static void
registry_handle_global(void *data, struct wl_registry *registry,
uint32_t id, const char *interface, uint32_t version)
{
struct display *d = data;
if (strcmp(interface, "wl_compositor") == 0) {
d->compositor =
wl_registry_bind(registry,
id, &wl_compositor_interface, 1);
} else if (strcmp(interface, "xdg_shell") == 0) {
d->shell = wl_registry_bind(registry,
id, &xdg_shell_interface, 1);
xdg_shell_use_unstable_version(d->shell, XDG_VERSION);
xdg_shell_add_listener(d->shell, &xdg_shell_listener, d);
} else if (strcmp(interface, "zwp_fullscreen_shell_v1") == 0) {
d->fshell = wl_registry_bind(registry,
id, &zwp_fullscreen_shell_v1_interface, 1);
} else if (strcmp(interface, "zwp_linux_dmabuf_v1") == 0) {
d->dmabuf = wl_registry_bind(registry,
id, &zwp_linux_dmabuf_v1_interface, 1);
zwp_linux_dmabuf_v1_add_listener(d->dmabuf, &dmabuf_listener, d);
}
}
static void
registry_handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name)
{
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global,
registry_handle_global_remove
};
static struct display *
create_display(void)
{
struct display *display;
display = malloc(sizeof *display);
if (display == NULL) {
fprintf(stderr, "out of memory\n");
exit(1);
}
display->display = wl_display_connect(NULL);
assert(display->display);
/* XXX: fake, because the compositor does not yet advertise anything */
display->xrgb8888_format_found = 1;
display->registry = wl_display_get_registry(display->display);
wl_registry_add_listener(display->registry,
&registry_listener, display);
wl_display_roundtrip(display->display);
if (display->dmabuf == NULL) {
fprintf(stderr, "No zwp_linux_dmabuf global\n");
exit(1);
}
wl_display_roundtrip(display->display);
if (!display->xrgb8888_format_found) {
fprintf(stderr, "DRM_FORMAT_XRGB8888 not available\n");
exit(1);
}
return display;
}
static void
destroy_display(struct display *display)
{
if (display->dmabuf)
zwp_linux_dmabuf_v1_destroy(display->dmabuf);
if (display->shell)
xdg_shell_destroy(display->shell);
if (display->fshell)
zwp_fullscreen_shell_v1_release(display->fshell);
if (display->compositor)
wl_compositor_destroy(display->compositor);
wl_registry_destroy(display->registry);
wl_display_flush(display->display);
wl_display_disconnect(display->display);
free(display);
}
static void
signal_int(int signum)
{
running = 0;
}
int
main(int argc, char **argv)
{
struct sigaction sigint;
struct display *display;
struct window *window;
int ret = 0;
display = create_display();
window = create_window(display, 250, 250);
if (!window)
return 1;
sigint.sa_handler = signal_int;
sigemptyset(&sigint.sa_mask);
sigint.sa_flags = SA_RESETHAND;
sigaction(SIGINT, &sigint, NULL);
/* Initialise damage to full surface, so the padding gets painted */
wl_surface_damage(window->surface, 0, 0,
window->width, window->height);
redraw(window, NULL, 0);
while (running && ret != -1)
ret = wl_display_dispatch(display->display);
fprintf(stderr, "simple-dmabuf exiting\n");
destroy_window(window);
destroy_display(display);
return 0;
}