2015-03-29 13:12:11 +00:00
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/*
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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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*
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* You can alternatively redistribute this file 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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#include <stddef.h>
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#include <assert.h>
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#include "common/common.h"
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#include "x11_common.h"
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#include "gl_common.h"
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2015-08-18 20:00:40 +00:00
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#include "gl_rpi.h"
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2015-03-29 13:12:11 +00:00
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static void *get_proc_address(const GLubyte *name)
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{
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void *p = eglGetProcAddress(name);
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// It looks like eglGetProcAddress() should work even for builtin
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// functions, but it doesn't work at least with RPI/Broadcom crap.
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// (EGL 1.4, which current RPI firmware pretends to support, definitely
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// is required to return non-extension functions.)
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if (!p) {
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void *h = dlopen("/opt/vc/lib/libGLESv2.so", RTLD_LAZY);
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if (h) {
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p = dlsym(h, name);
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dlclose(h);
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}
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}
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return p;
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}
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2015-08-18 20:00:40 +00:00
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static EGLConfig select_fb_config_egl(struct mp_egl_rpi *p)
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2015-03-29 13:12:11 +00:00
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{
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EGLint attributes[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_RED_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_BLUE_SIZE, 8,
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EGL_DEPTH_SIZE, 0,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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EGL_NONE
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};
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EGLint config_count;
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EGLConfig config;
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eglChooseConfig(p->egl_display, attributes, &config, 1, &config_count);
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if (!config_count) {
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2015-08-18 20:00:40 +00:00
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MP_FATAL(p, "Could find EGL configuration!\n");
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2015-03-29 13:12:11 +00:00
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return NULL;
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}
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return config;
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}
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2015-08-18 20:00:40 +00:00
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int mp_egl_rpi_init(struct mp_egl_rpi *p, DISPMANX_ELEMENT_HANDLE_T window,
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int w, int h)
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{
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p->egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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if (!eglInitialize(p->egl_display, NULL, NULL)) {
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MP_FATAL(p, "EGL failed to initialize.\n");
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goto fail;
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}
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eglBindAPI(EGL_OPENGL_ES_API);
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EGLConfig config = select_fb_config_egl(p);
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if (!config)
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goto fail;
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p->egl_window = (EGL_DISPMANX_WINDOW_T){
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.element = window,
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.width = w,
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.height = h,
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};
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p->egl_surface = eglCreateWindowSurface(p->egl_display, config,
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&p->egl_window, NULL);
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if (p->egl_surface == EGL_NO_SURFACE) {
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MP_FATAL(p, "Could not create EGL surface!\n");
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goto fail;
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}
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EGLint context_attributes[] = {
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EGL_CONTEXT_CLIENT_VERSION, 2,
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EGL_NONE
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};
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p->egl_context = eglCreateContext(p->egl_display, config,
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EGL_NO_CONTEXT, context_attributes);
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if (p->egl_context == EGL_NO_CONTEXT) {
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MP_FATAL(p, "Could not create EGL context!\n");
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goto fail;
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}
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eglMakeCurrent(p->egl_display, p->egl_surface, p->egl_surface,
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p->egl_context);
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p->gl = talloc_zero(NULL, struct GL);
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const char *exts = eglQueryString(p->egl_display, EGL_EXTENSIONS);
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mpgl_load_functions(p->gl, get_proc_address, exts, p->log);
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if (!p->gl->version && !p->gl->es)
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goto fail;
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return 0;
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fail:
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mp_egl_rpi_destroy(p);
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return -1;
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}
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void mp_egl_rpi_destroy(struct mp_egl_rpi *p)
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{
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2015-08-20 13:21:01 +00:00
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if (p->egl_display) {
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2015-08-18 20:00:40 +00:00
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eglMakeCurrent(p->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
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EGL_NO_CONTEXT);
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}
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2015-08-20 13:21:01 +00:00
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if (p->egl_surface)
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eglDestroySurface(p->egl_display, p->egl_surface);
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if (p->egl_context)
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eglDestroyContext(p->egl_display, p->egl_context);
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2015-08-18 20:00:40 +00:00
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p->egl_context = EGL_NO_CONTEXT;
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2015-08-31 17:46:02 +00:00
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eglReleaseThread();
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2015-08-18 20:00:40 +00:00
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p->egl_display = EGL_NO_DISPLAY;
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talloc_free(p->gl);
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p->gl = NULL;
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}
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struct priv {
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DISPMANX_DISPLAY_HANDLE_T display;
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DISPMANX_ELEMENT_HANDLE_T window;
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DISPMANX_UPDATE_HANDLE_T update;
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struct mp_egl_rpi egl;
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int w, h;
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};
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2015-03-29 13:12:11 +00:00
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static bool sc_config_window(struct MPGLContext *ctx, int flags)
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{
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struct priv *p = ctx->priv;
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struct vo *vo = ctx->vo;
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2015-08-18 20:00:40 +00:00
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p->egl.log = vo->log;
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if (p->egl.gl) {
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2015-03-29 13:12:11 +00:00
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vo->dwidth = p->w;
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vo->dheight = p->h;
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return true;
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}
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bcm_host_init();
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p->display = vc_dispmanx_display_open(0);
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p->update = vc_dispmanx_update_start(0);
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if (!p->display || !p->update) {
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MP_FATAL(ctx->vo, "Could not get DISPMANX objects.\n");
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return false;
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}
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uint32_t w, h;
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if (graphics_get_display_size(0, &w, &h) < 0) {
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MP_FATAL(ctx->vo, "Could not get display size.\n");
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return false;
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}
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// dispmanx is like a neanderthal version of Wayland - you can add an
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// overlay any place on the screen. Just use the whole screen.
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VC_RECT_T dst = {.width = w, .height = h};
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VC_RECT_T src = {.width = w << 16, .height = h << 16};
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VC_DISPMANX_ALPHA_T alpha = {
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.flags = DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS,
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.opacity = 0xFF,
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};
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p->window = vc_dispmanx_element_add(p->update, p->display, 1, &dst, 0,
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&src, DISPMANX_PROTECTION_NONE, &alpha, 0, 0);
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if (!p->window) {
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MP_FATAL(ctx->vo, "Could not add DISPMANX element.\n");
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return false;
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}
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vc_dispmanx_update_submit_sync(p->update);
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2015-08-18 20:00:40 +00:00
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if (mp_egl_rpi_init(&p->egl, p->window, w, h) < 0)
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2015-03-29 13:12:11 +00:00
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return false;
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2015-08-18 20:00:40 +00:00
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ctx->gl = p->egl.gl;
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2015-03-29 13:12:11 +00:00
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vo->dwidth = p->w = w;
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vo->dheight = p->h = h;
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return true;
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}
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static void sc_releaseGlContext(MPGLContext *ctx)
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{
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struct priv *p = ctx->priv;
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2015-08-18 20:00:40 +00:00
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mp_egl_rpi_destroy(&p->egl);
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2015-03-29 13:12:11 +00:00
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vc_dispmanx_display_close(p->display);
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}
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static void sc_swapGlBuffers(MPGLContext *ctx)
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{
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struct priv *p = ctx->priv;
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2015-08-18 20:00:40 +00:00
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eglSwapBuffers(p->egl.egl_display, p->egl.egl_surface);
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2015-03-29 13:12:11 +00:00
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}
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static int sc_vo_init(struct vo *vo)
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{
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return 1;
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}
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static void sc_vo_uninit(struct vo *vo)
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{
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}
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static int sc_vo_control(struct vo *vo, int *events, int request, void *arg)
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{
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return VO_NOTIMPL;
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}
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void mpgl_set_backend_rpi(MPGLContext *ctx)
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{
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ctx->priv = talloc_zero(ctx, struct priv);
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ctx->config_window = sc_config_window;
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ctx->releaseGlContext = sc_releaseGlContext;
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ctx->swapGlBuffers = sc_swapGlBuffers;
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ctx->vo_init = sc_vo_init;
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ctx->vo_uninit = sc_vo_uninit;
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ctx->vo_control = sc_vo_control;
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}
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