summaryrefslogtreecommitdiffstats
path: root/video/out/opengl/context_rpi.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 20:36:56 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 20:36:56 +0000
commit51de1d8436100f725f3576aefa24a2bd2057bc28 (patch)
treec6d1d5264b6d40a8d7ca34129f36b7d61e188af3 /video/out/opengl/context_rpi.c
parentInitial commit. (diff)
downloadmpv-51de1d8436100f725f3576aefa24a2bd2057bc28.tar.xz
mpv-51de1d8436100f725f3576aefa24a2bd2057bc28.zip
Adding upstream version 0.37.0.upstream/0.37.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'video/out/opengl/context_rpi.c')
-rw-r--r--video/out/opengl/context_rpi.c327
1 files changed, 327 insertions, 0 deletions
diff --git a/video/out/opengl/context_rpi.c b/video/out/opengl/context_rpi.c
new file mode 100644
index 0000000..0b6babb
--- /dev/null
+++ b/video/out/opengl/context_rpi.c
@@ -0,0 +1,327 @@
+/*
+ * 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 <stdatomic.h>
+#include <stddef.h>
+
+#include <bcm_host.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include "common/common.h"
+#include "video/out/win_state.h"
+#include "context.h"
+#include "egl_helpers.h"
+
+struct priv {
+ struct GL gl;
+ DISPMANX_DISPLAY_HANDLE_T display;
+ DISPMANX_ELEMENT_HANDLE_T window;
+ DISPMANX_UPDATE_HANDLE_T update;
+ EGLDisplay egl_display;
+ EGLConfig egl_config;
+ EGLContext egl_context;
+ EGLSurface egl_surface;
+ // yep, the API keeps a pointer to it
+ EGL_DISPMANX_WINDOW_T egl_window;
+ int x, y, w, h;
+ double display_fps;
+ atomic_int reload_display;
+ int win_params[4];
+};
+
+static void tv_callback(void *callback_data, uint32_t reason, uint32_t param1,
+ uint32_t param2)
+{
+ struct ra_ctx *ctx = callback_data;
+ struct priv *p = ctx->priv;
+ atomic_store(&p->reload_display, true);
+ vo_wakeup(ctx->vo);
+}
+
+static void destroy_dispmanx(struct ra_ctx *ctx)
+{
+ struct priv *p = ctx->priv;
+
+ if (p->egl_surface) {
+ eglMakeCurrent(p->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
+ EGL_NO_CONTEXT);
+ eglDestroySurface(p->egl_display, p->egl_surface);
+ p->egl_surface = EGL_NO_SURFACE;
+ }
+
+ if (p->window)
+ vc_dispmanx_element_remove(p->update, p->window);
+ p->window = 0;
+ if (p->display)
+ vc_dispmanx_display_close(p->display);
+ p->display = 0;
+ if (p->update)
+ vc_dispmanx_update_submit_sync(p->update);
+ p->update = 0;
+}
+
+static void rpi_uninit(struct ra_ctx *ctx)
+{
+ struct priv *p = ctx->priv;
+ ra_gl_ctx_uninit(ctx);
+
+ vc_tv_unregister_callback_full(tv_callback, ctx);
+
+ destroy_dispmanx(ctx);
+
+ if (p->egl_context)
+ eglDestroyContext(p->egl_display, p->egl_context);
+ p->egl_context = EGL_NO_CONTEXT;
+ eglReleaseThread();
+ p->egl_display = EGL_NO_DISPLAY;
+}
+
+static bool recreate_dispmanx(struct ra_ctx *ctx)
+{
+ struct priv *p = ctx->priv;
+ int display_nr = 0;
+ int layer = 0;
+
+ MP_VERBOSE(ctx, "Recreating DISPMANX state...\n");
+
+ destroy_dispmanx(ctx);
+
+ p->display = vc_dispmanx_display_open(display_nr);
+ p->update = vc_dispmanx_update_start(0);
+ if (!p->display || !p->update) {
+ MP_FATAL(ctx, "Could not get DISPMANX objects.\n");
+ goto fail;
+ }
+
+ uint32_t dispw, disph;
+ if (graphics_get_display_size(0, &dispw, &disph) < 0) {
+ MP_FATAL(ctx, "Could not get display size.\n");
+ goto fail;
+ }
+ p->w = dispw;
+ p->h = disph;
+
+ if (ctx->vo->opts->fullscreen) {
+ p->x = p->y = 0;
+ } else {
+ struct vo_win_geometry geo;
+ struct mp_rect screenrc = {0, 0, p->w, p->h};
+
+ vo_calc_window_geometry(ctx->vo, &screenrc, &geo);
+
+ mp_rect_intersection(&geo.win, &screenrc);
+
+ p->x = geo.win.x0;
+ p->y = geo.win.y0;
+ p->w = geo.win.x1 - geo.win.x0;
+ p->h = geo.win.y1 - geo.win.y0;
+ }
+
+ // dispmanx is like a neanderthal version of Wayland - you can add an
+ // overlay any place on the screen.
+ VC_RECT_T dst = {.x = p->x, .y = p->y, .width = p->w, .height = p->h};
+ VC_RECT_T src = {.width = p->w << 16, .height = p->h << 16};
+ VC_DISPMANX_ALPHA_T alpha = {
+ .flags = DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS,
+ .opacity = 0xFF,
+ };
+ p->window = vc_dispmanx_element_add(p->update, p->display, layer, &dst, 0,
+ &src, DISPMANX_PROTECTION_NONE, &alpha,
+ 0, 0);
+ if (!p->window) {
+ MP_FATAL(ctx, "Could not add DISPMANX element.\n");
+ goto fail;
+ }
+
+ vc_dispmanx_update_submit_sync(p->update);
+ p->update = vc_dispmanx_update_start(0);
+
+ p->egl_window = (EGL_DISPMANX_WINDOW_T){
+ .element = p->window,
+ .width = p->w,
+ .height = p->h,
+ };
+ p->egl_surface = eglCreateWindowSurface(p->egl_display, p->egl_config,
+ &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;
+ }
+
+ p->display_fps = 0;
+ TV_GET_STATE_RESP_T tvstate;
+ TV_DISPLAY_STATE_T tvstate_disp;
+ if (!vc_tv_get_state(&tvstate) && !vc_tv_get_display_state(&tvstate_disp)) {
+ if (tvstate_disp.state & (VC_HDMI_HDMI | VC_HDMI_DVI)) {
+ p->display_fps = tvstate_disp.display.hdmi.frame_rate;
+
+ HDMI_PROPERTY_PARAM_T param = {
+ .property = HDMI_PROPERTY_PIXEL_CLOCK_TYPE,
+ };
+ if (!vc_tv_hdmi_get_property(&param) &&
+ param.param1 == HDMI_PIXEL_CLOCK_TYPE_NTSC)
+ p->display_fps = p->display_fps / 1.001;
+ } else {
+ p->display_fps = tvstate_disp.display.sdtv.frame_rate;
+ }
+ }
+
+ p->win_params[0] = display_nr;
+ p->win_params[1] = layer;
+ p->win_params[2] = p->x;
+ p->win_params[3] = p->y;
+
+ ctx->vo->dwidth = p->w;
+ ctx->vo->dheight = p->h;
+ if (ctx->swapchain)
+ ra_gl_ctx_resize(ctx->swapchain, p->w, p->h, 0);
+
+ ctx->vo->want_redraw = true;
+
+ vo_event(ctx->vo, VO_EVENT_WIN_STATE);
+ return true;
+
+fail:
+ destroy_dispmanx(ctx);
+ return false;
+}
+
+static void rpi_swap_buffers(struct ra_ctx *ctx)
+{
+ struct priv *p = ctx->priv;
+ eglSwapBuffers(p->egl_display, p->egl_surface);
+}
+
+static bool rpi_init(struct ra_ctx *ctx)
+{
+ struct priv *p = ctx->priv = talloc_zero(ctx, struct priv);
+
+ bcm_host_init();
+
+ vc_tv_register_callback(tv_callback, ctx);
+
+ p->egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+ if (!eglInitialize(p->egl_display, NULL, NULL)) {
+ MP_FATAL(ctx, "EGL failed to initialize.\n");
+ goto fail;
+ }
+
+ if (!mpegl_create_context(ctx, p->egl_display, &p->egl_context, &p->egl_config))
+ goto fail;
+
+ if (!recreate_dispmanx(ctx))
+ goto fail;
+
+ mpegl_load_functions(&p->gl, ctx->log);
+
+ struct ra_gl_ctx_params params = {
+ .swap_buffers = rpi_swap_buffers,
+ };
+
+ if (!ra_gl_ctx_init(ctx, &p->gl, params))
+ goto fail;
+
+ ra_add_native_resource(ctx->ra, "MPV_RPI_WINDOW", p->win_params);
+
+ ra_gl_ctx_resize(ctx->swapchain, ctx->vo->dwidth, ctx->vo->dheight, 0);
+ return true;
+
+fail:
+ rpi_uninit(ctx);
+ return false;
+}
+
+static bool rpi_reconfig(struct ra_ctx *ctx)
+{
+ return recreate_dispmanx(ctx);
+}
+
+static struct mp_image *take_screenshot(struct ra_ctx *ctx)
+{
+ struct priv *p = ctx->priv;
+
+ if (!p->display)
+ return NULL;
+
+ struct mp_image *img = mp_image_alloc(IMGFMT_BGR0, p->w, p->h);
+ if (!img)
+ return NULL;
+
+ DISPMANX_RESOURCE_HANDLE_T resource =
+ vc_dispmanx_resource_create(VC_IMAGE_ARGB8888,
+ img->w | ((img->w * 4) << 16), img->h,
+ &(int32_t){0});
+ if (!resource)
+ goto fail;
+
+ if (vc_dispmanx_snapshot(p->display, resource, 0))
+ goto fail;
+
+ VC_RECT_T rc = {.width = img->w, .height = img->h};
+ if (vc_dispmanx_resource_read_data(resource, &rc, img->planes[0], img->stride[0]))
+ goto fail;
+
+ vc_dispmanx_resource_delete(resource);
+ return img;
+
+fail:
+ vc_dispmanx_resource_delete(resource);
+ talloc_free(img);
+ return NULL;
+}
+
+static int rpi_control(struct ra_ctx *ctx, int *events, int request, void *arg)
+{
+ struct priv *p = ctx->priv;
+
+ switch (request) {
+ case VOCTRL_SCREENSHOT_WIN:
+ *(struct mp_image **)arg = take_screenshot(ctx);
+ return VO_TRUE;
+ case VOCTRL_CHECK_EVENTS:
+ if (atomic_fetch_and(&p->reload_display, 0)) {
+ MP_WARN(ctx, "Recovering from display mode switch...\n");
+ recreate_dispmanx(ctx);
+ }
+ return VO_TRUE;
+ case VOCTRL_GET_DISPLAY_FPS:
+ *(double *)arg = p->display_fps;
+ return VO_TRUE;
+ }
+
+ return VO_NOTIMPL;
+}
+
+const struct ra_ctx_fns ra_ctx_rpi = {
+ .type = "opengl",
+ .name = "rpi",
+ .reconfig = rpi_reconfig,
+ .control = rpi_control,
+ .init = rpi_init,
+ .uninit = rpi_uninit,
+};