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mpv/video/out/opengl/context_mali_fbdev.c
Niklas Haas 65979986a9 vo_opengl: refactor into vo_gpu
This is done in several steps:

1. refactor MPGLContext -> struct ra_ctx
2. move GL-specific stuff in vo_opengl into opengl/context.c
3. generalize context creation to support other APIs, and add --gpu-api
4. rename all of the --opengl- options that are no longer opengl-specific
5. move all of the stuff from opengl/* that isn't GL-specific into gpu/
   (note: opengl/gl_utils.h became opengl/utils.h)
6. rename vo_opengl to vo_gpu
7. to handle window screenshots, the short-term approach was to just add
   it to ra_swchain_fns. Long term (and for vulkan) this has to be moved to
   ra itself (and vo_gpu altered to compensate), but this was a stop-gap
   measure to prevent this commit from getting too big
8. move ra->fns->flush to ra_gl_ctx instead
9. some other minor changes that I've probably already forgotten

Note: This is one half of a major refactor, the other half of which is
provided by rossy's following commit. This commit enables support for
all linux platforms, while his version enables support for all non-linux
platforms.

Note 2: vo_opengl_cb.c also re-uses ra_gl_ctx so it benefits from the
--opengl- options like --opengl-early-flush, --opengl-finish etc. Should
be a strict superset of the old functionality.

Disclaimer: Since I have no way of compiling mpv on all platforms, some
of these ports were done blindly. Specifically, the blind ports included
context_mali_fbdev.c and context_rpi.c. Since they're both based on
egl_helpers, the port should have gone smoothly without any major
changes required. But if somebody complains about a compile error on
those platforms (assuming anybody actually uses them), you know where to
complain.
2017-09-21 15:00:55 +02:00

159 lines
3.9 KiB
C

/*
* 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 <stddef.h>
#include <assert.h>
#include <unistd.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <linux/fb.h>
#include <EGL/fbdev_window.h>
#include "common/common.h"
#include "context.h"
#include "egl_helpers.h"
static bool get_fbdev_size(int *w, int *h)
{
int fd = open("/dev/fb0", O_RDWR | O_CLOEXEC);
if (fd < 0)
return false;
struct fb_var_screeninfo info = {0};
bool ok = !ioctl(fd, FBIOGET_VSCREENINFO, &info);
if (ok) {
*w = info.xres;
*h = info.yres;
}
close(fd);
return ok;
}
struct priv {
struct GL gl;
EGLDisplay egl_display;
EGLConfig egl_config;
EGLContext egl_context;
EGLSurface egl_surface;
struct fbdev_window egl_window;
int w, h;
};
static void mali_uninit(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
ra_gl_ctx_uninit(ctx);
if (p->egl_surface) {
eglMakeCurrent(p->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
eglDestroySurface(p->egl_display, p->egl_surface);
}
if (p->egl_context)
eglDestroyContext(p->egl_display, p->egl_context);
eglReleaseThread();
}
static void mali_swap_buffers(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
eglSwapBuffers(p->egl_display, p->egl_surface);
}
static bool mali_init(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv = talloc_zero(ctx, struct priv);
if (!get_fbdev_size(&p->w, &p->h)) {
MP_FATAL(ctx, "Could not get fbdev size.\n");
goto fail;
}
p->egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (!eglInitialize(p->egl_display, NULL, NULL)) {
MP_FATAL(ctx, "EGL failed to initialize.\n");
goto fail;
}
EGLConfig config;
if (!mpegl_create_context(ctx, p->egl_display, &p->egl_context, &config))
goto fail;
p->egl_window = (struct fbdev_window){
.width = p->w,
.height = p->h,
};
p->egl_surface = eglCreateWindowSurface(p->egl_display, config,
(EGLNativeWindowType)&p->egl_window, NULL);
if (p->egl_surface == EGL_NO_SURFACE) {
MP_FATAL(ctx, "Could not create EGL surface!\n");
goto fail;
}
if (!eglMakeCurrent(p->egl_display, p->egl_surface, p->egl_surface,
p->egl_context))
{
MP_FATAL(ctx, "Failed to set context!\n");
goto fail;
}
mpegl_load_functions(&p->gl, ctx->log);
struct ra_gl_ctx_params params = {
.swap_buffers = mali_swap_buffers,
};
if (!ra_gl_ctx_init(ctx, &p->gl, params))
goto fail;
return true;
fail:
mali_uninit(ctx);
return false;
}
static bool mali_reconfig(struct ra_ctx *ctx)
{
struct priv *p = ctx->priv;
ctx->vo->dwidth = p->w;
ctx->vo->dheight = p->h;
ra_gl_ctx_resize(ctx->swapchain, p->w, p->h, 0);
}
static int mali_control(struct ra_ctx *ctx, int *events, int request, void *arg)
{
return VO_NOTIMPL;
}
const struct ra_ctx_fns ra_ctx_mali_fbdev = {
.type = "opengl",
.name = "mali-fbdev",
.reconfig = mali_reconfig,
.control = mali_control,
.init = mali_init,
.uninit = mali_uninit,
};