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mpv/video/out/opengl/context_wayland.c

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/*
* This file is part of mpv video player.
* Copyright © 2013 Alexander Preisinger <alexander.preisinger@gmail.com>
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <wayland-egl.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include "video/out/wayland_common.h"
#include "context.h"
#include "egl_helpers.h"
#include "utils.h"
// Generated from presentation-time.xml
#include "video/out/wayland/presentation-time.h"
#define EGL_PLATFORM_WAYLAND_EXT 0x31D8
struct priv {
GL gl;
EGLDisplay egl_display;
EGLContext egl_context;
EGLSurface egl_surface;
EGLConfig egl_config;
struct wl_egl_window *egl_window;
};
static const struct wl_callback_listener frame_listener;
static void frame_callback(void *data, struct wl_callback *callback, uint32_t time)
{
struct vo_wayland_state *wl = data;
if (callback)
wl_callback_destroy(callback);
wl->frame_callback = wl_surface_frame(wl->surface);
wl_callback_add_listener(wl->frame_callback, &frame_listener, wl);
wl->frame_wait = false;
}
static const struct wl_callback_listener frame_listener = {
frame_callback,
};
static const struct wp_presentation_feedback_listener feedback_listener;
static void feedback_sync_output(void *data, struct wp_presentation_feedback *fback,
struct wl_output *output)
{
}
static void feedback_presented(void *data, struct wp_presentation_feedback *fback,
uint32_t tv_sec_hi, uint32_t tv_sec_lo,
uint32_t tv_nsec, uint32_t refresh_nsec,
uint32_t seq_hi, uint32_t seq_lo,
uint32_t flags)
{
struct vo_wayland_state *wl = data;
wp_presentation_feedback_destroy(fback);
vo_wayland_sync_shift(wl);
// Very similar to oml_sync_control, in this case we assume that every
// time the compositor receives feedback, a buffer swap has been already
// been performed.
//
// Notes:
// - tv_sec_lo + tv_sec_hi is the equivalent of oml's ust
// - seq_lo + seq_hi is the equivalent of oml's msc
// - these values are updated everytime the compositor receives feedback.
int index = last_available_sync(wl);
if (index < 0) {
queue_new_sync(wl);
index = 0;
}
int64_t sec = (uint64_t) tv_sec_lo + ((uint64_t) tv_sec_hi << 32);
wl->sync[index].sbc = wl->user_sbc;
wl->sync[index].ust = sec * 1000000LL + (uint64_t) tv_nsec / 1000;
wl->sync[index].msc = (uint64_t) seq_lo + ((uint64_t) seq_hi << 32);
wl->sync[index].refresh_usec = (uint64_t)refresh_nsec/1000;
wl->sync[index].filled = true;
}
static void feedback_discarded(void *data, struct wp_presentation_feedback *fback)
{
wp_presentation_feedback_destroy(fback);
}
static const struct wp_presentation_feedback_listener feedback_listener = {
feedback_sync_output,
feedback_presented,
feedback_discarded,
};
static void resize(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
struct vo_wayland_state *wl = ctx->vo->wl;
MP_VERBOSE(wl, "Handling resize on the egl side\n");
const int32_t width = wl->scaling*mp_rect_w(wl->geometry);
const int32_t height = wl->scaling*mp_rect_h(wl->geometry);
wl_surface_set_buffer_scale(wl->surface, wl->scaling);
if (p->egl_window)
wl_egl_window_resize(p->egl_window, width, height, 0, 0);
wl->vo->dwidth = width;
wl->vo->dheight = height;
}
static void wayland_egl_swap_buffers(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
struct vo_wayland_state *wl = ctx->vo->wl;
if (wl->presentation) {
wl->feedback = wp_presentation_feedback(wl->presentation, wl->surface);
wp_presentation_feedback_add_listener(wl->feedback, &feedback_listener, wl);
wl->user_sbc += 1;
int index = last_available_sync(wl);
if (index < 0)
queue_new_sync(wl);
}
eglSwapBuffers(p->egl_display, p->egl_surface);
if (!wl->opts->disable_vsync)
vo_wayland_wait_frame(wl);
if (wl->presentation)
wayland_sync_swap(wl);
wl->frame_wait = true;
}
static void wayland_egl_get_vsync(struct ra_ctx *ctx, struct vo_vsync_info *info)
{
struct vo_wayland_state *wl = ctx->vo->wl;
if (wl->presentation && !wl->hidden) {
info->vsync_duration = wl->vsync_duration;
info->skipped_vsyncs = wl->last_skipped_vsyncs;
info->last_queue_display_time = wl->last_queue_display_time;
}
}
static bool egl_create_context(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv = talloc_zero(ctx, struct priv);
struct vo_wayland_state *wl = ctx->vo->wl;
if (!(p->egl_display = mpegl_get_display(EGL_PLATFORM_WAYLAND_EXT,
"EGL_EXT_platform_wayland",
wl->display)))
return false;
if (eglInitialize(p->egl_display, NULL, NULL) != EGL_TRUE)
return false;
if (!mpegl_create_context(ctx, p->egl_display, &p->egl_context,
&p->egl_config))
return false;
eglMakeCurrent(p->egl_display, NULL, NULL, p->egl_context);
mpegl_load_functions(&p->gl, wl->log);
struct ra_gl_ctx_params params = {
.swap_buffers = wayland_egl_swap_buffers,
.get_vsync = wayland_egl_get_vsync,
};
if (!ra_gl_ctx_init(ctx, &p->gl, params))
return false;
ra_add_native_resource(ctx->ra, "wl", wl->display);
wl->frame_callback = wl_surface_frame(wl->surface);
wl_callback_add_listener(wl->frame_callback, &frame_listener, wl);
return true;
}
static void egl_create_window(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
struct vo_wayland_state *wl = ctx->vo->wl;
p->egl_window = wl_egl_window_create(wl->surface, mp_rect_w(wl->geometry),
mp_rect_h(wl->geometry));
p->egl_surface = eglCreateWindowSurface(p->egl_display, p->egl_config,
p->egl_window, NULL);
eglMakeCurrent(p->egl_display, p->egl_surface, p->egl_surface, p->egl_context);
eglSwapInterval(p->egl_display, 0);
}
static bool wayland_egl_reconfig(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
if (!vo_wayland_reconfig(ctx->vo))
return false;
if (!p->egl_window)
egl_create_window(ctx);
return true;
}
static void wayland_egl_uninit(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
ra_gl_ctx_uninit(ctx);
if (p->egl_context) {
eglReleaseThread();
if (p->egl_window)
wl_egl_window_destroy(p->egl_window);
eglDestroySurface(p->egl_display, p->egl_surface);
eglMakeCurrent(p->egl_display, NULL, NULL, EGL_NO_CONTEXT);
eglDestroyContext(p->egl_display, p->egl_context);
p->egl_context = NULL;
}
eglTerminate(p->egl_display);
vo_wayland_uninit(ctx->vo);
}
static int wayland_egl_control(struct ra_ctx *ctx, int *events, int request,
void *data)
{
struct vo_wayland_state *wl = ctx->vo->wl;
int r = vo_wayland_control(ctx->vo, events, request, data);
if (*events & VO_EVENT_RESIZE) {
resize(ctx);
ra_gl_ctx_resize(ctx->swapchain, wl->vo->dwidth, wl->vo->dheight, 0);
}
return r;
}
static void wayland_egl_wakeup(struct ra_ctx *ctx)
{
vo_wayland_wakeup(ctx->vo);
}
static void wayland_egl_wait_events(struct ra_ctx *ctx, int64_t until_time_us)
{
vo_wayland_wait_events(ctx->vo, until_time_us);
}
static bool wayland_egl_init(struct ra_ctx *ctx)
{
if (!vo_wayland_init(ctx->vo)) {
vo_wayland_uninit(ctx->vo);
return false;
}
return egl_create_context(ctx);
}
const struct ra_ctx_fns ra_ctx_wayland_egl = {
.type = "opengl",
.name = "wayland",
.reconfig = wayland_egl_reconfig,
.control = wayland_egl_control,
.wakeup = wayland_egl_wakeup,
.wait_events = wayland_egl_wait_events,
.init = wayland_egl_init,
.uninit = wayland_egl_uninit,
};
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