mirror of
https://gitlab.freedesktop.org/wayland/weston
synced 2024-09-06 18:05:39 +00:00
![Derek Foreman](/assets/img/avatar_default.png)
We do this enough that having a single implementation for it is probably a win. Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
1082 lines
27 KiB
C
1082 lines
27 KiB
C
/*
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* Copyright © 2015 Collabora Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <stdint.h>
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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 <getopt.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 <fcntl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <linux/videodev2.h>
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#include <linux/input.h>
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#include <wayland-client.h>
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#include <libweston/zalloc.h>
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#include "xdg-shell-client-protocol.h"
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#include "fullscreen-shell-unstable-v1-client-protocol.h"
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#include "linux-dmabuf-unstable-v1-client-protocol.h"
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#include "weston-direct-display-client-protocol.h"
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#include "shared/helpers.h"
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#include "shared/weston-drm-fourcc.h"
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#define CLEAR(x) memset(&(x), 0, sizeof(x))
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#define OPT_FLAG_INVERT (1 << 0)
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#define OPT_FLAG_DIRECT_DISPLAY (1 << 1)
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static void
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redraw(void *data, struct wl_callback *callback, uint32_t time);
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static int
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xioctl(int fh, int request, void *arg)
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{
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int r;
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do {
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r = ioctl(fh, request, arg);
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} while (r == -1 && errno == EINTR);
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return r;
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}
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static uint32_t
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parse_format(const char fmt[4])
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{
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return fourcc_code(fmt[0], fmt[1], fmt[2], fmt[3]);
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}
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static inline const char *
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dump_format(uint32_t format, char out[4])
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{
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#if BYTE_ORDER == BIG_ENDIAN
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format = __builtin_bswap32(format);
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#endif
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memcpy(out, &format, 4);
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return out;
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}
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struct buffer_format {
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int width;
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int height;
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enum v4l2_buf_type type;
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uint32_t format;
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unsigned num_planes;
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unsigned strides[VIDEO_MAX_PLANES];
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};
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struct display {
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struct wl_display *display;
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struct wl_registry *registry;
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struct wl_compositor *compositor;
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struct wl_seat *seat;
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struct wl_keyboard *keyboard;
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struct xdg_wm_base *wm_base;
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struct zwp_fullscreen_shell_v1 *fshell;
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struct zwp_linux_dmabuf_v1 *dmabuf;
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struct weston_direct_display_v1 *direct_display;
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bool requested_format_found;
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uint32_t opts;
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int v4l_fd;
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struct buffer_format format;
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uint32_t drm_format;
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};
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struct buffer {
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struct wl_buffer *buffer;
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struct display *display;
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int busy;
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int index;
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int dmabuf_fds[VIDEO_MAX_PLANES];
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int data_offsets[VIDEO_MAX_PLANES];
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};
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#define NUM_BUFFERS 4
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struct window {
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struct display *display;
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struct wl_surface *surface;
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struct xdg_surface *xdg_surface;
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struct xdg_toplevel *xdg_toplevel;
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struct buffer buffers[NUM_BUFFERS];
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struct wl_callback *callback;
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bool wait_for_configure;
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bool initialized;
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};
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static bool running = true;
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static int
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queue(struct display *display, struct buffer *buffer)
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{
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struct v4l2_buffer buf;
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struct v4l2_plane planes[VIDEO_MAX_PLANES];
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unsigned i;
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CLEAR(buf);
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buf.type = display->format.type;
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buf.memory = V4L2_MEMORY_MMAP;
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buf.index = buffer->index;
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if (display->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
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CLEAR(planes);
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buf.length = VIDEO_MAX_PLANES;
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buf.m.planes = planes;
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}
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if (xioctl(display->v4l_fd, VIDIOC_QUERYBUF, &buf) == -1) {
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perror("VIDIOC_QUERYBUF");
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return 0;
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}
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if (xioctl(display->v4l_fd, VIDIOC_QBUF, &buf) == -1) {
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perror("VIDIOC_QBUF");
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return 0;
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}
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if (display->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
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if (display->format.num_planes != buf.length) {
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fprintf(stderr, "Wrong number of planes returned by "
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"QUERYBUF\n");
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return 0;
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}
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for (i = 0; i < buf.length; ++i)
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buffer->data_offsets[i] = buf.m.planes[i].data_offset;
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}
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return 1;
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}
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static void
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buffer_release(void *data, struct wl_buffer *buffer)
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{
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struct buffer *mybuf = data;
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mybuf->busy = 0;
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if (!queue(mybuf->display, mybuf))
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running = false;
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}
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static const struct wl_buffer_listener buffer_listener = {
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buffer_release
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};
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static unsigned int
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set_format(struct display *display, uint32_t format)
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{
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struct v4l2_format fmt;
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char buf[4];
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CLEAR(fmt);
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fmt.type = display->format.type;
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if (xioctl(display->v4l_fd, VIDIOC_G_FMT, &fmt) == -1) {
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perror("VIDIOC_G_FMT");
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return 0;
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}
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/* No need to set the format if it already is the one we want */
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if (display->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
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fmt.fmt.pix.pixelformat == format)
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return 1;
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if (display->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
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fmt.fmt.pix_mp.pixelformat == format)
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return fmt.fmt.pix_mp.num_planes;
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if (display->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
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fmt.fmt.pix.pixelformat = format;
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else
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fmt.fmt.pix_mp.pixelformat = format;
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if (xioctl(display->v4l_fd, VIDIOC_S_FMT, &fmt) == -1) {
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perror("VIDIOC_S_FMT");
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return 0;
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}
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if ((display->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
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fmt.fmt.pix.pixelformat != format) ||
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(display->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
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fmt.fmt.pix_mp.pixelformat != format)) {
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fprintf(stderr, "Failed to set format to %.4s\n",
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dump_format(format, buf));
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return 0;
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}
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if (display->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
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return fmt.fmt.pix_mp.num_planes;
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return 1;
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}
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static int
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v4l_connect(struct display *display, const char *dev_name)
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{
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struct v4l2_capability cap;
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struct v4l2_requestbuffers req;
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struct v4l2_input input;
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int index_input = -1;
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unsigned int num_planes;
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display->v4l_fd = open(dev_name, O_RDWR);
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if (display->v4l_fd < 0) {
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perror(dev_name);
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return 0;
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}
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if (xioctl(display->v4l_fd, VIDIOC_QUERYCAP, &cap) == -1) {
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if (errno == EINVAL) {
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fprintf(stderr, "%s is no V4L2 device\n", dev_name);
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} else {
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perror("VIDIOC_QUERYCAP");
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}
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return 0;
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}
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if (xioctl(display->v4l_fd, VIDIOC_G_INPUT, &index_input) == 0) {
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input.index = index_input;
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if (xioctl(display->v4l_fd, VIDIOC_ENUMINPUT, &input) == 0) {
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if (input.status & V4L2_IN_ST_VFLIP) {
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fprintf(stdout, "Found camera sensor y-flipped\n");
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display->opts |= OPT_FLAG_INVERT;
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}
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}
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}
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if (cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)
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display->format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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else if (cap.capabilities & V4L2_CAP_VIDEO_CAPTURE_MPLANE)
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display->format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
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else {
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fprintf(stderr, "%s is no video capture device\n", dev_name);
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return 0;
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}
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if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
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fprintf(stderr, "%s does not support dmabuf i/o\n", dev_name);
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return 0;
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}
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/* Select video input, video standard and tune here */
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num_planes = set_format(display, display->format.format);
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if (num_planes < 1)
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return 0;
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CLEAR(req);
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req.type = display->format.type;
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req.memory = V4L2_MEMORY_MMAP;
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req.count = NUM_BUFFERS * num_planes;
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if (xioctl(display->v4l_fd, VIDIOC_REQBUFS, &req) == -1) {
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if (errno == EINVAL) {
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fprintf(stderr, "%s does not support dmabuf\n",
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dev_name);
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} else {
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perror("VIDIOC_REQBUFS");
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}
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return 0;
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}
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if (req.count < NUM_BUFFERS * num_planes) {
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fprintf(stderr, "Insufficient buffer memory on %s\n", dev_name);
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return 0;
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}
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printf("Created %d buffers\n", req.count);
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return 1;
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}
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static void
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v4l_shutdown(struct display *display)
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{
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close(display->v4l_fd);
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}
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static void
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create_succeeded(void *data,
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struct zwp_linux_buffer_params_v1 *params,
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struct wl_buffer *new_buffer)
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{
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struct buffer *buffer = data;
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unsigned i;
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buffer->buffer = new_buffer;
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wl_buffer_add_listener(buffer->buffer, &buffer_listener, buffer);
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zwp_linux_buffer_params_v1_destroy(params);
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for (i = 0; i < buffer->display->format.num_planes; ++i)
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close(buffer->dmabuf_fds[i]);
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}
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static void
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create_failed(void *data, struct zwp_linux_buffer_params_v1 *params)
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{
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struct buffer *buffer = data;
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unsigned i;
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buffer->buffer = NULL;
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zwp_linux_buffer_params_v1_destroy(params);
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for (i = 0; i < buffer->display->format.num_planes; ++i)
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close(buffer->dmabuf_fds[i]);
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running = false;
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fprintf(stderr, "Error: zwp_linux_buffer_params.create failed.\n");
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}
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static const struct zwp_linux_buffer_params_v1_listener params_listener = {
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create_succeeded,
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create_failed
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};
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static void
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create_dmabuf_buffer(struct display *display, struct buffer *buffer)
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{
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struct zwp_linux_buffer_params_v1 *params;
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uint64_t modifier;
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uint32_t flags;
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unsigned i;
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modifier = 0;
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flags = 0;
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if (display->opts & OPT_FLAG_INVERT)
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flags |= ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT;
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params = zwp_linux_dmabuf_v1_create_params(display->dmabuf);
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if ((display->opts & OPT_FLAG_DIRECT_DISPLAY) && display->direct_display) {
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weston_direct_display_v1_enable(display->direct_display, params);
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if (display->opts & OPT_FLAG_INVERT) {
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flags &= ~ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT;
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fprintf(stdout, "dmabuf y-inverted attribute flag was removed"
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", as display-direct flag was set\n");
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}
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}
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for (i = 0; i < display->format.num_planes; ++i)
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zwp_linux_buffer_params_v1_add(params,
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buffer->dmabuf_fds[i],
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i, /* plane_idx */
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buffer->data_offsets[i], /* offset */
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display->format.strides[i],
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modifier >> 32,
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modifier & 0xffffffff);
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zwp_linux_buffer_params_v1_add_listener(params, ¶ms_listener,
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buffer);
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zwp_linux_buffer_params_v1_create(params,
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display->format.width,
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display->format.height,
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display->drm_format,
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flags);
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}
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|
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static int
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buffer_export(struct display *display, int index, int dmafd[])
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{
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struct v4l2_exportbuffer expbuf;
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unsigned i;
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CLEAR(expbuf);
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for (i = 0; i < display->format.num_planes; ++i) {
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expbuf.type = display->format.type;
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expbuf.index = index;
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expbuf.plane = i;
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if (xioctl(display->v4l_fd, VIDIOC_EXPBUF, &expbuf) == -1) {
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perror("VIDIOC_EXPBUF");
|
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while (i)
|
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close(dmafd[--i]);
|
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return 0;
|
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}
|
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dmafd[i] = expbuf.fd;
|
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}
|
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|
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return 1;
|
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}
|
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|
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static int
|
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queue_initial_buffers(struct display *display,
|
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struct buffer buffers[NUM_BUFFERS])
|
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{
|
||
struct buffer *buffer;
|
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int index;
|
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|
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for (index = 0; index < NUM_BUFFERS; ++index) {
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buffer = &buffers[index];
|
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buffer->display = display;
|
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buffer->index = index;
|
||
|
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if (!queue(display, buffer)) {
|
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fprintf(stderr, "Failed to queue buffer\n");
|
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return 0;
|
||
}
|
||
|
||
assert(!buffer->buffer);
|
||
if (!buffer_export(display, index, buffer->dmabuf_fds))
|
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return 0;
|
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|
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create_dmabuf_buffer(display, buffer);
|
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}
|
||
|
||
return 1;
|
||
}
|
||
|
||
static int
|
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dequeue(struct display *display)
|
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{
|
||
struct v4l2_buffer buf;
|
||
struct v4l2_plane planes[VIDEO_MAX_PLANES];
|
||
|
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CLEAR(buf);
|
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buf.type = display->format.type;
|
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buf.memory = V4L2_MEMORY_MMAP;
|
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buf.length = VIDEO_MAX_PLANES;
|
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buf.m.planes = planes;
|
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|
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/* This ioctl is blocking until a buffer is ready to be displayed */
|
||
if (xioctl(display->v4l_fd, VIDIOC_DQBUF, &buf) == -1) {
|
||
perror("VIDIOC_DQBUF");
|
||
return -1;
|
||
}
|
||
|
||
return buf.index;
|
||
}
|
||
|
||
static int
|
||
fill_buffer_format(struct display *display)
|
||
{
|
||
struct v4l2_format fmt;
|
||
struct v4l2_pix_format *pix;
|
||
struct v4l2_pix_format_mplane *pix_mp;
|
||
int i;
|
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char buf[4];
|
||
|
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CLEAR(fmt);
|
||
fmt.type = display->format.type;
|
||
|
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/* Preserve original settings as set by v4l2-ctl for example */
|
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if (xioctl(display->v4l_fd, VIDIOC_G_FMT, &fmt) == -1) {
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perror("VIDIOC_G_FMT");
|
||
return 0;
|
||
}
|
||
|
||
if (display->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
|
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pix = &fmt.fmt.pix;
|
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|
||
printf("%d×%d, %.4s\n", pix->width, pix->height,
|
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dump_format(pix->pixelformat, buf));
|
||
|
||
display->format.num_planes = 1;
|
||
display->format.width = pix->width;
|
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display->format.height = pix->height;
|
||
display->format.strides[0] = pix->bytesperline;
|
||
} else {
|
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pix_mp = &fmt.fmt.pix_mp;
|
||
|
||
display->format.num_planes = pix_mp->num_planes;
|
||
display->format.width = pix_mp->width;
|
||
display->format.height = pix_mp->height;
|
||
|
||
for (i = 0; i < pix_mp->num_planes; ++i)
|
||
display->format.strides[i] = pix_mp->plane_fmt[i].bytesperline;
|
||
|
||
printf("%d×%d, %.4s, %d planes\n",
|
||
pix_mp->width, pix_mp->height,
|
||
dump_format(pix_mp->pixelformat, buf),
|
||
pix_mp->num_planes);
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
v4l_init(struct display *display, struct buffer buffers[NUM_BUFFERS]) {
|
||
if (!fill_buffer_format(display)) {
|
||
fprintf(stderr, "Failed to fill buffer format\n");
|
||
return 0;
|
||
}
|
||
|
||
if (!queue_initial_buffers(display, buffers)) {
|
||
fprintf(stderr, "Failed to queue initial buffers\n");
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
start_capture(struct display *display)
|
||
{
|
||
int type = display->format.type;
|
||
|
||
if (xioctl(display->v4l_fd, VIDIOC_STREAMON, &type) == -1) {
|
||
perror("VIDIOC_STREAMON");
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
static void
|
||
xdg_surface_handle_configure(void *data, struct xdg_surface *surface,
|
||
uint32_t serial)
|
||
{
|
||
struct window *window = data;
|
||
|
||
xdg_surface_ack_configure(surface, serial);
|
||
|
||
if (window->initialized && window->wait_for_configure)
|
||
redraw(window, NULL, 0);
|
||
window->wait_for_configure = false;
|
||
}
|
||
|
||
static const struct xdg_surface_listener xdg_surface_listener = {
|
||
xdg_surface_handle_configure,
|
||
};
|
||
|
||
static void
|
||
xdg_toplevel_handle_configure(void *data, struct xdg_toplevel *toplevel,
|
||
int32_t width, int32_t height,
|
||
struct wl_array *states)
|
||
{
|
||
}
|
||
|
||
static void
|
||
xdg_toplevel_handle_close(void *data, struct xdg_toplevel *xdg_toplevel)
|
||
{
|
||
running = 0;
|
||
}
|
||
|
||
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
|
||
xdg_toplevel_handle_configure,
|
||
xdg_toplevel_handle_close,
|
||
};
|
||
|
||
static struct window *
|
||
create_window(struct display *display)
|
||
{
|
||
struct window *window;
|
||
|
||
window = zalloc(sizeof *window);
|
||
if (!window)
|
||
return NULL;
|
||
|
||
window->callback = NULL;
|
||
window->display = display;
|
||
window->surface = wl_compositor_create_surface(display->compositor);
|
||
|
||
if (display->wm_base) {
|
||
window->xdg_surface =
|
||
xdg_wm_base_get_xdg_surface(display->wm_base,
|
||
window->surface);
|
||
|
||
assert(window->xdg_surface);
|
||
|
||
xdg_surface_add_listener(window->xdg_surface,
|
||
&xdg_surface_listener, window);
|
||
|
||
window->xdg_toplevel =
|
||
xdg_surface_get_toplevel(window->xdg_surface);
|
||
|
||
assert(window->xdg_toplevel);
|
||
|
||
xdg_toplevel_add_listener(window->xdg_toplevel,
|
||
&xdg_toplevel_listener, window);
|
||
|
||
xdg_toplevel_set_title(window->xdg_toplevel, "simple-dmabuf-v4l");
|
||
xdg_toplevel_set_app_id(window->xdg_toplevel,
|
||
"org.freedesktop.weston.simple-dmabuf-v4l");
|
||
|
||
window->wait_for_configure = true;
|
||
wl_surface_commit(window->surface);
|
||
} 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;
|
||
unsigned j;
|
||
|
||
if (window->callback)
|
||
wl_callback_destroy(window->callback);
|
||
|
||
if (window->xdg_toplevel)
|
||
xdg_toplevel_destroy(window->xdg_toplevel);
|
||
if (window->xdg_surface)
|
||
xdg_surface_destroy(window->xdg_surface);
|
||
wl_surface_destroy(window->surface);
|
||
|
||
for (i = 0; i < NUM_BUFFERS; i++) {
|
||
if (!window->buffers[i].buffer)
|
||
continue;
|
||
|
||
wl_buffer_destroy(window->buffers[i].buffer);
|
||
for (j = 0; j < window->display->format.num_planes; ++j)
|
||
close(window->buffers[i].dmabuf_fds[j]);
|
||
}
|
||
|
||
v4l_shutdown(window->display);
|
||
|
||
free(window);
|
||
}
|
||
|
||
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;
|
||
int index, num_busy = 0;
|
||
|
||
/* Check for a deadlock situation where we would block forever trying
|
||
* to dequeue a buffer while all of them are locked by the compositor.
|
||
*/
|
||
for (index = 0; index < NUM_BUFFERS; ++index)
|
||
if (window->buffers[index].busy)
|
||
++num_busy;
|
||
|
||
/* A robust application would just postpone redraw until it has queued
|
||
* a buffer.
|
||
*/
|
||
assert(num_busy < NUM_BUFFERS);
|
||
|
||
index = dequeue(window->display);
|
||
if (index < 0) {
|
||
/* We couldn’t get any buffer out of the camera, exiting. */
|
||
running = false;
|
||
return;
|
||
}
|
||
|
||
buffer = &window->buffers[index];
|
||
assert(!buffer->busy);
|
||
|
||
wl_surface_attach(window->surface, buffer->buffer, 0, 0);
|
||
wl_surface_damage(window->surface, 0, 0,
|
||
window->display->format.width,
|
||
window->display->format.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_modifier(void *data, struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf,
|
||
uint32_t format, uint32_t modifier_hi, uint32_t modifier_lo)
|
||
{
|
||
struct display *d = data;
|
||
uint64_t modifier = u64_from_u32s(modifier_hi, modifier_lo);
|
||
|
||
if (format == d->drm_format && modifier == DRM_FORMAT_MOD_LINEAR)
|
||
d->requested_format_found = true;
|
||
}
|
||
|
||
|
||
static void
|
||
dmabuf_format(void *data, struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf,
|
||
uint32_t format)
|
||
{
|
||
/* deprecated */
|
||
}
|
||
|
||
static const struct zwp_linux_dmabuf_v1_listener dmabuf_listener = {
|
||
dmabuf_format,
|
||
dmabuf_modifier
|
||
};
|
||
|
||
static void
|
||
keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
|
||
uint32_t format, int fd, uint32_t size)
|
||
{
|
||
/* Just so we don’t leak the keymap fd */
|
||
close(fd);
|
||
}
|
||
|
||
static void
|
||
keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
|
||
uint32_t serial, struct wl_surface *surface,
|
||
struct wl_array *keys)
|
||
{
|
||
}
|
||
|
||
static void
|
||
keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
|
||
uint32_t serial, struct wl_surface *surface)
|
||
{
|
||
}
|
||
|
||
static void
|
||
keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
|
||
uint32_t serial, uint32_t time, uint32_t key,
|
||
uint32_t state)
|
||
{
|
||
struct display *d = data;
|
||
|
||
if (!d->wm_base)
|
||
return;
|
||
|
||
if (key == KEY_ESC && state)
|
||
running = false;
|
||
}
|
||
|
||
static void
|
||
keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
|
||
uint32_t serial, uint32_t mods_depressed,
|
||
uint32_t mods_latched, uint32_t mods_locked,
|
||
uint32_t group)
|
||
{
|
||
}
|
||
|
||
static const struct wl_keyboard_listener keyboard_listener = {
|
||
keyboard_handle_keymap,
|
||
keyboard_handle_enter,
|
||
keyboard_handle_leave,
|
||
keyboard_handle_key,
|
||
keyboard_handle_modifiers,
|
||
};
|
||
|
||
static void
|
||
seat_handle_capabilities(void *data, struct wl_seat *seat,
|
||
enum wl_seat_capability caps)
|
||
{
|
||
struct display *d = data;
|
||
|
||
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !d->keyboard) {
|
||
d->keyboard = wl_seat_get_keyboard(seat);
|
||
wl_keyboard_add_listener(d->keyboard, &keyboard_listener, d);
|
||
} else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && d->keyboard) {
|
||
wl_keyboard_destroy(d->keyboard);
|
||
d->keyboard = NULL;
|
||
}
|
||
}
|
||
|
||
static const struct wl_seat_listener seat_listener = {
|
||
seat_handle_capabilities,
|
||
};
|
||
|
||
static void
|
||
xdg_wm_base_ping(void *data, struct xdg_wm_base *shell, uint32_t serial)
|
||
{
|
||
xdg_wm_base_pong(shell, serial);
|
||
}
|
||
|
||
static const struct xdg_wm_base_listener wm_base_listener = {
|
||
xdg_wm_base_ping,
|
||
};
|
||
|
||
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, "wl_seat") == 0) {
|
||
d->seat = wl_registry_bind(registry,
|
||
id, &wl_seat_interface, 1);
|
||
wl_seat_add_listener(d->seat, &seat_listener, d);
|
||
} else if (strcmp(interface, "xdg_wm_base") == 0) {
|
||
d->wm_base = wl_registry_bind(registry,
|
||
id, &xdg_wm_base_interface, 1);
|
||
xdg_wm_base_add_listener(d->wm_base, &wm_base_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, 3);
|
||
zwp_linux_dmabuf_v1_add_listener(d->dmabuf, &dmabuf_listener,
|
||
d);
|
||
} else if (strcmp(interface, "weston_direct_display_v1") == 0) {
|
||
d->direct_display = wl_registry_bind(registry,
|
||
id, &weston_direct_display_v1_interface, 1);
|
||
}
|
||
}
|
||
|
||
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(uint32_t requested_format, uint32_t opt_flags)
|
||
{
|
||
struct display *display;
|
||
|
||
display = zalloc(sizeof *display);
|
||
if (display == NULL) {
|
||
fprintf(stderr, "out of memory\n");
|
||
exit(1);
|
||
}
|
||
display->display = wl_display_connect(NULL);
|
||
assert(display->display);
|
||
|
||
display->drm_format = requested_format;
|
||
|
||
display->registry = wl_display_get_registry(display->display);
|
||
wl_registry_add_listener(display->registry,
|
||
®istry_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->requested_format_found) {
|
||
fprintf(stderr, "0x%lx requested DRM format not available\n",
|
||
(unsigned long) requested_format);
|
||
exit(1);
|
||
}
|
||
|
||
if (opt_flags)
|
||
display->opts = opt_flags;
|
||
return display;
|
||
}
|
||
|
||
static void
|
||
destroy_display(struct display *display)
|
||
{
|
||
if (display->dmabuf)
|
||
zwp_linux_dmabuf_v1_destroy(display->dmabuf);
|
||
|
||
if (display->wm_base)
|
||
xdg_wm_base_destroy(display->wm_base);
|
||
|
||
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
|
||
usage(const char *argv0)
|
||
{
|
||
printf("Usage: %s [-v v4l2_device] [-f v4l2_format] [-d drm_format] [-i|--y-invert] [-g|--d-display]\n"
|
||
"\n"
|
||
"The default V4L2 device is /dev/video0\n"
|
||
"\n"
|
||
"Both formats are FOURCC values (see http://fourcc.org/)\n"
|
||
"V4L2 formats are defined in <linux/videodev2.h>\n"
|
||
"DRM formats are defined in <libdrm/drm_fourcc.h>\n"
|
||
"The default for both formats is YUYV.\n"
|
||
"If the V4L2 and DRM formats differ, the data is simply "
|
||
"reinterpreted rather than converted.\n\n"
|
||
"Flags:\n"
|
||
"- y-invert force the image to be y-flipped;\n note will be "
|
||
"automatically added if we detect if the camera sensor is "
|
||
"y-flipped\n"
|
||
"- d-display skip importing dmabuf-based buffer into the GPU\n "
|
||
"and attempt pass the buffer straight to the display controller\n",
|
||
argv0);
|
||
|
||
printf("\n"
|
||
"How to set up Vivid the virtual video driver for testing:\n"
|
||
"- build your kernel with CONFIG_VIDEO_VIVID=m\n"
|
||
"- add this to a /etc/modprobe.d/ file:\n"
|
||
" options vivid node_types=0x1 num_inputs=1 input_types=0x00\n"
|
||
"- modprobe vivid and check which device was created,\n"
|
||
" here we assume /dev/video0\n"
|
||
"- set the pixel format:\n"
|
||
" $ v4l2-ctl -d /dev/video0 --set-fmt-video=width=640,pixelformat=XR24\n"
|
||
"- optionally could add 'allocators=0x1' to options as to create"
|
||
" the buffer in a dmabuf-contiguous way\n"
|
||
" (as some display-controllers require it)\n"
|
||
"- launch the demo:\n"
|
||
" $ %s -v /dev/video0 -f XR24 -d XR24\n"
|
||
"You should see a test pattern with color bars, and some text.\n"
|
||
"\n"
|
||
"More about vivid: https://www.kernel.org/doc/Documentation/video4linux/vivid.txt\n"
|
||
"\n", argv0);
|
||
|
||
exit(0);
|
||
}
|
||
|
||
static void
|
||
signal_int(int signum)
|
||
{
|
||
running = false;
|
||
}
|
||
|
||
int
|
||
main(int argc, char **argv)
|
||
{
|
||
struct sigaction sigint;
|
||
struct display *display;
|
||
struct window *window;
|
||
const char *v4l_device = NULL;
|
||
uint32_t v4l_format = 0x0;
|
||
uint32_t drm_format = 0x0;
|
||
uint32_t opts_flags = 0x0;
|
||
int c, opt_index, ret = 0;
|
||
|
||
static struct option long_options[] = {
|
||
{ "v4l2-device", required_argument, NULL, 'v' },
|
||
{ "v4l2-format", required_argument, NULL, 'f' },
|
||
{ "drm-format", required_argument, NULL, 'd' },
|
||
{ "y-invert", no_argument, NULL, 'i' },
|
||
{ "d-display", no_argument, NULL, 'g' },
|
||
{ "help", no_argument, NULL, 'h' },
|
||
{ 0, 0, NULL, 0 }
|
||
};
|
||
|
||
while ((c = getopt_long(argc, argv, "hiv:d:f:g", long_options,
|
||
&opt_index)) != -1) {
|
||
switch (c) {
|
||
case 'v':
|
||
v4l_device = optarg;
|
||
break;
|
||
case 'f':
|
||
v4l_format = parse_format(optarg);
|
||
break;
|
||
case 'd':
|
||
drm_format = parse_format(optarg);
|
||
break;
|
||
case 'i':
|
||
opts_flags |= OPT_FLAG_INVERT;
|
||
break;
|
||
case 'g':
|
||
opts_flags |= OPT_FLAG_DIRECT_DISPLAY;
|
||
break;
|
||
default:
|
||
case 'h':
|
||
usage(argv[0]);
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (!v4l_device)
|
||
v4l_device = "/dev/video0";
|
||
|
||
if (v4l_format == 0x0)
|
||
v4l_format = parse_format("YUYV");
|
||
|
||
if (drm_format == 0x0)
|
||
drm_format = v4l_format;
|
||
|
||
display = create_display(drm_format, opts_flags);
|
||
display->format.format = v4l_format;
|
||
|
||
window = create_window(display);
|
||
if (!window)
|
||
return 1;
|
||
|
||
if (!v4l_connect(display, v4l_device))
|
||
return 1;
|
||
|
||
if (!v4l_init(display, window->buffers))
|
||
return 1;
|
||
|
||
sigint.sa_handler = signal_int;
|
||
sigemptyset(&sigint.sa_mask);
|
||
sigint.sa_flags = SA_RESETHAND;
|
||
sigaction(SIGINT, &sigint, NULL);
|
||
|
||
/* Here we retrieve the linux-dmabuf objects, or error */
|
||
wl_display_roundtrip(display->display);
|
||
|
||
/* In case of error, running will be 0 */
|
||
if (!running)
|
||
return 1;
|
||
|
||
/* We got all of our buffers, we can start the capture! */
|
||
if (!start_capture(display))
|
||
return 1;
|
||
|
||
window->initialized = true;
|
||
|
||
if (!window->wait_for_configure)
|
||
redraw(window, NULL, 0);
|
||
|
||
while (running && ret != -1)
|
||
ret = wl_display_dispatch(display->display);
|
||
|
||
fprintf(stderr, "simple-dmabuf-v4l exiting\n");
|
||
destroy_window(window);
|
||
destroy_display(display);
|
||
|
||
return 0;
|
||
}
|