DefaultGlObjectsProvider.java
/*
* Copyright 2023 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.media3.effect;
import android.opengl.EGL14;
import android.opengl.EGLContext;
import android.opengl.EGLDisplay;
import android.opengl.EGLSurface;
import androidx.annotation.Nullable;
import androidx.media3.common.C;
import androidx.media3.common.GlObjectsProvider;
import androidx.media3.common.GlTextureInfo;
import androidx.media3.common.util.GlUtil;
import androidx.media3.common.util.UnstableApi;
// TODO(b/261820382): Add tests for sharing context.
/**
* Implementation of {@link GlObjectsProvider} that configures an {@link EGLContext} to share data
* with a preexisting {@code sharedEglContext}.
*
* <p>The created {@link EGLContext} is configured with 8-bit RGB or 10-bit RGB attributes and no
* depth buffer or render buffers.
*/
@UnstableApi
public final class DefaultGlObjectsProvider implements GlObjectsProvider {
private final EGLContext sharedEglContext;
/**
* Creates an instance.
*
* @param sharedEglContext The {@link EGLContext} with which to share data.
*/
public DefaultGlObjectsProvider(@Nullable EGLContext sharedEglContext) {
this.sharedEglContext = sharedEglContext != null ? sharedEglContext : EGL14.EGL_NO_CONTEXT;
}
@Override
public EGLContext createEglContext(
EGLDisplay eglDisplay, int openGlVersion, int[] configAttributes) throws GlUtil.GlException {
return GlUtil.createEglContext(sharedEglContext, eglDisplay, openGlVersion, configAttributes);
}
@Override
public EGLSurface createEglSurface(
EGLDisplay eglDisplay,
Object surface,
@C.ColorTransfer int colorTransfer,
boolean isEncoderInputSurface)
throws GlUtil.GlException {
return GlUtil.createEglSurface(eglDisplay, surface, colorTransfer, isEncoderInputSurface);
}
@Override
public EGLSurface createFocusedPlaceholderEglSurface(
EGLContext eglContext, EGLDisplay eglDisplay, int[] configAttributes)
throws GlUtil.GlException {
return GlUtil.createFocusedPlaceholderEglSurface(eglContext, eglDisplay, configAttributes);
}
@Override
public GlTextureInfo createBuffersForTexture(int texId, int width, int height)
throws GlUtil.GlException {
int fboId = GlUtil.createFboForTexture(texId);
return new GlTextureInfo(texId, fboId, /* rboId= */ C.INDEX_UNSET, width, height);
}
}