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/*
* This file is part of mpv.
*
* 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 <assert.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xpresent.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include "common/common.h"
#include "video/out/present_sync.h"
#include "video/out/x11_common.h"
#include "context.h"
#include "egl_helpers.h"
#include "utils.h"
#define EGL_PLATFORM_X11_EXT 0x31D5
struct priv {
GL gl;
EGLDisplay egl_display;
EGLContext egl_context;
EGLSurface egl_surface;
};
static void mpegl_uninit(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
ra_gl_ctx_uninit(ctx);
eglMakeCurrent(p->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
eglTerminate(p->egl_display);
vo_x11_uninit(ctx->vo);
}
static int pick_xrgba_config(void *user_data, EGLConfig *configs, int num_configs)
{
struct ra_ctx *ctx = user_data;
struct priv *p = ctx->priv;
struct vo *vo = ctx->vo;
for (int n = 0; n < num_configs; n++) {
int vID = 0, num;
eglGetConfigAttrib(p->egl_display, configs[n], EGL_NATIVE_VISUAL_ID, &vID);
XVisualInfo template = {.visualid = vID};
XVisualInfo *vi = XGetVisualInfo(vo->x11->display, VisualIDMask,
&template, &num);
if (vi) {
bool is_rgba = vo_x11_is_rgba_visual(vi);
XFree(vi);
if (is_rgba)
return n;
}
}
return 0;
}
static bool mpegl_check_visible(struct ra_ctx *ctx)
{
return vo_x11_check_visible(ctx->vo);
}
static void mpegl_swap_buffers(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
eglSwapBuffers(p->egl_display, p->egl_surface);
if (ctx->vo->x11->use_present)
present_sync_swap(ctx->vo->x11->present);
}
static void mpegl_get_vsync(struct ra_ctx *ctx, struct vo_vsync_info *info)
{
struct vo_x11_state *x11 = ctx->vo->x11;
if (ctx->vo->x11->use_present)
present_sync_get_info(x11->present, info);
}
static bool mpegl_init(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv = talloc_zero(ctx, struct priv);
struct vo *vo = ctx->vo;
int msgl = ctx->opts.probing ? MSGL_V : MSGL_FATAL;
if (!vo_x11_init(vo))
goto uninit;
p->egl_display = mpegl_get_display(EGL_PLATFORM_X11_EXT,
"EGL_EXT_platform_x11",
vo->x11->display);
if (!eglInitialize(p->egl_display, NULL, NULL)) {
MP_MSG(ctx, msgl, "Could not initialize EGL.\n");
goto uninit;
}
struct mpegl_cb cb = {
.user_data = ctx,
.refine_config = ctx->opts.want_alpha ? pick_xrgba_config : NULL,
};
EGLConfig config;
if (!mpegl_create_context_cb(ctx, p->egl_display, cb, &p->egl_context, &config))
goto uninit;
int cid, vID, n;
if (!eglGetConfigAttrib(p->egl_display, config, EGL_CONFIG_ID, &cid)) {
MP_FATAL(ctx, "Getting EGL_CONFIG_ID failed!\n");
goto uninit;
}
if (!eglGetConfigAttrib(p->egl_display, config, EGL_NATIVE_VISUAL_ID, &vID)) {
MP_FATAL(ctx, "Getting X visual ID failed!\n");
goto uninit;
}
MP_VERBOSE(ctx, "Choosing visual EGL config 0x%x, visual ID 0x%x\n", cid, vID);
XVisualInfo template = {.visualid = vID};
XVisualInfo *vi = XGetVisualInfo(vo->x11->display, VisualIDMask, &template, &n);
if (!vi) {
MP_FATAL(ctx, "Getting X visual failed!\n");
goto uninit;
}
if (!vo_x11_create_vo_window(vo, vi, "gl")) {
XFree(vi);
goto uninit;
}
XFree(vi);
p->egl_surface = mpegl_create_window_surface(
p->egl_display, config, &vo->x11->window);
if (p->egl_surface == EGL_NO_SURFACE) {
p->egl_surface = eglCreateWindowSurface(
p->egl_display, config, (EGLNativeWindowType)vo->x11->window, NULL);
}
if (p->egl_surface == EGL_NO_SURFACE) {
MP_FATAL(ctx, "Could not create EGL surface!\n");
goto uninit;
}
if (!eglMakeCurrent(p->egl_display, p->egl_surface, p->egl_surface,
p->egl_context))
{
MP_FATAL(ctx, "Could not make context current!\n");
goto uninit;
}
mpegl_load_functions(&p->gl, ctx->log);
struct ra_gl_ctx_params params = {
.check_visible = mpegl_check_visible,
.swap_buffers = mpegl_swap_buffers,
.get_vsync = mpegl_get_vsync,
};
if (!ra_gl_ctx_init(ctx, &p->gl, params))
goto uninit;
ra_add_native_resource(ctx->ra, "x11", vo->x11->display);
return true;
uninit:
mpegl_uninit(ctx);
return false;
}
static void resize(struct ra_ctx *ctx)
{
ra_gl_ctx_resize(ctx->swapchain, ctx->vo->dwidth, ctx->vo->dheight, 0);
}
static bool mpegl_reconfig(struct ra_ctx *ctx)
{
vo_x11_config_vo_window(ctx->vo);
resize(ctx);
return true;
}
static int mpegl_control(struct ra_ctx *ctx, int *events, int request,
void *arg)
{
int ret = vo_x11_control(ctx->vo, events, request, arg);
if (*events & VO_EVENT_RESIZE)
resize(ctx);
return ret;
}
static void mpegl_wakeup(struct ra_ctx *ctx)
{
vo_x11_wakeup(ctx->vo);
}
static void mpegl_wait_events(struct ra_ctx *ctx, int64_t until_time_ns)
{
vo_x11_wait_events(ctx->vo, until_time_ns);
}
const struct ra_ctx_fns ra_ctx_x11_egl = {
.type = "opengl",
.name = "x11egl",
.reconfig = mpegl_reconfig,
.control = mpegl_control,
.wakeup = mpegl_wakeup,
.wait_events = mpegl_wait_events,
.init = mpegl_init,
.uninit = mpegl_uninit,
};
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