From 8fc21fd0d5aa733eb4388c68d22c8f1748f16e33 Mon Sep 17 00:00:00 2001 From: Aman Gupta Date: Thu, 5 Oct 2017 11:58:37 -0700 Subject: vo_gpu: add android opengl backend At the moment, rendering on Android requires ``--vo=opengl-cb`` and a lot of java<->c++ bridging code to receive the receive and react to the render callback in java. Performance also suffers with opengl-cb, due to the overhead of context switching in JNI. With this patch, Android can render using ``--vo=gpu --gpu-context=android`` (after setting ``--wid`` to point to an android.view.Surface on-screen). --- video/out/opengl/context_android.c | 151 +++++++++++++++++++++++++++++++++++++ 1 file changed, 151 insertions(+) create mode 100644 video/out/opengl/context_android.c (limited to 'video') diff --git a/video/out/opengl/context_android.c b/video/out/opengl/context_android.c new file mode 100644 index 0000000000..f98ec1ea03 --- /dev/null +++ b/video/out/opengl/context_android.c @@ -0,0 +1,151 @@ +/* + * 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 . + */ + +#include +#include +#include +#include + +#include "egl_helpers.h" + +#include "common/common.h" +#include "options/m_config.h" +#include "context.h" + +struct priv { + struct GL gl; + EGLDisplay egl_display; + EGLConfig egl_config; + EGLContext egl_context; + EGLSurface egl_surface; + ANativeWindow *native_window; + int w, h; +}; + +static void android_swap_buffers(struct ra_ctx *ctx) +{ + struct priv *p = ctx->priv; + eglSwapBuffers(p->egl_display, p->egl_surface); +} + +static void android_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); + + if (p->native_window) { + ANativeWindow_release(p->native_window); + p->native_window = NULL; + } +} + +static bool android_init(struct ra_ctx *ctx) +{ + struct priv *p = ctx->priv = talloc_zero(ctx, struct priv); + + jobject surface = (jobject)(intptr_t)ctx->vo->opts->WinID; + JavaVM *vm = (JavaVM *)av_jni_get_java_vm(NULL); + JNIEnv *env; + int ret = (*vm)->GetEnv(vm, (void**)&env, JNI_VERSION_1_6); + if (ret == JNI_EDETACHED) { + if ((*vm)->AttachCurrentThread(vm, &env, NULL) != 0) { + MP_FATAL(ctx, "Could not attach java VM.\n"); + goto fail; + } + } + p->native_window = ANativeWindow_fromSurface(env, surface); + (*vm)->DetachCurrentThread(vm); + + 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; + + EGLint format; + eglGetConfigAttrib(p->egl_display, config, EGL_NATIVE_VISUAL_ID, &format); + ANativeWindow_setBuffersGeometry(p->native_window, 0, 0, format); + + p->egl_surface = eglCreateWindowSurface(p->egl_display, config, + (EGLNativeWindowType)p->native_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; + } + + if (!eglQuerySurface(p->egl_display, p->egl_surface, EGL_WIDTH, &p->w) || + !eglQuerySurface(p->egl_display, p->egl_surface, EGL_HEIGHT, &p->h)) { + MP_FATAL(ctx, "Failed to get height and width!\n"); + goto fail; + } + + mpegl_load_functions(&p->gl, ctx->log); + + struct ra_gl_ctx_params params = { + .swap_buffers = android_swap_buffers, + }; + + if (!ra_gl_ctx_init(ctx, &p->gl, params)) + goto fail; + + return true; +fail: + android_uninit(ctx); + return false; +} + +static bool android_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); + return true; +} + +static int android_control(struct ra_ctx *ctx, int *events, int request, void *arg) +{ + return VO_NOTIMPL; +} + +const struct ra_ctx_fns ra_ctx_android = { + .type = "opengl", + .name = "android", + .reconfig = android_reconfig, + .control = android_control, + .init = android_init, + .uninit = android_uninit, +}; -- cgit v1.2.3