mirror of https://github.com/mpv-player/mpv
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "common/common.h"
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#include "video/filter/vf_gpu.h"
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#include "video/out/opengl/egl_helpers.h"
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#include "video/out/opengl/ra_gl.h"
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struct gl_offscreen_ctx {
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GL gl;
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EGLDisplay egl_display;
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EGLContext egl_context;
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};
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static void gl_ctx_destroy(void *p)
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{
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struct offscreen_ctx *ctx = p;
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struct gl_offscreen_ctx *gl = ctx->priv;
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ra_free(&ctx->ra);
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if (gl->egl_context)
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eglDestroyContext(gl->egl_display, gl->egl_context);
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}
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static void gl_ctx_set_context(struct offscreen_ctx *ctx, bool enable)
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{
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struct gl_offscreen_ctx *gl = ctx->priv;
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EGLContext c = enable ? gl->egl_context : EGL_NO_CONTEXT;
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if (!eglMakeCurrent(gl->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, c))
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MP_ERR(ctx, "Could not make EGL context current.\n");
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}
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static struct offscreen_ctx *gl_offscreen_ctx_create(struct mpv_global *global,
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struct mp_log *log)
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{
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struct offscreen_ctx *ctx = talloc(NULL, struct offscreen_ctx);
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struct gl_offscreen_ctx *gl = talloc_zero(ctx, struct gl_offscreen_ctx);
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talloc_set_destructor(ctx, gl_ctx_destroy);
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*ctx = (struct offscreen_ctx){
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.log = log,
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.priv = gl,
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.set_context = gl_ctx_set_context,
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};
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// This appears to work with Mesa. EGL 1.5 doesn't specify what a "default
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// display" is at all.
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gl->egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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if (!eglInitialize(gl->egl_display, NULL, NULL)) {
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MP_ERR(ctx, "Could not initialize EGL.\n");
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goto error;
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}
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// Unfortunately, mpegl_create_context() is entangled with ra_ctx.
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// Fortunately, it does not need much, and we can provide a stub.
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struct ra_ctx ractx = {
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.log = ctx->log,
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.global = global,
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};
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EGLConfig config;
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if (!mpegl_create_context(&ractx, gl->egl_display, &gl->egl_context, &config))
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{
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MP_ERR(ctx, "Could not create EGL context.\n");
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goto error;
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}
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if (!eglMakeCurrent(gl->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
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gl->egl_context))
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{
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MP_ERR(ctx, "Could not make EGL context current.\n");
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goto error;
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}
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mpegl_load_functions(&gl->gl, ctx->log);
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ctx->ra = ra_create_gl(&gl->gl, ctx->log);
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if (!ctx->ra)
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goto error;
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gl_ctx_set_context(ctx, false);
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return ctx;
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error:
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talloc_free(ctx);
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return NULL;
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}
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const struct offscreen_context offscreen_egl = {
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.api = "egl",
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.offscreen_ctx_create = gl_offscreen_ctx_create
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};
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