| /* |
| * Copyright (C) 2011 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 android.filterpacks.base; |
| |
| import android.filterfw.core.Filter; |
| import android.filterfw.core.FilterContext; |
| import android.filterfw.core.Frame; |
| import android.filterfw.core.FrameFormat; |
| import android.filterfw.core.GenerateFieldPort; |
| import android.filterfw.core.GLFrame; |
| import android.filterfw.format.ImageFormat; |
| |
| /** |
| * @hide |
| */ |
| public class GLTextureSource extends Filter { |
| |
| @GenerateFieldPort(name = "texId") |
| private int mTexId; |
| |
| @GenerateFieldPort(name = "width") |
| private int mWidth; |
| |
| @GenerateFieldPort(name = "height") |
| private int mHeight; |
| |
| @GenerateFieldPort(name = "repeatFrame", hasDefault = true) |
| private boolean mRepeatFrame = false; |
| |
| /* This timestamp will be used for all output frames from this source. They |
| * represent nanoseconds, and should be positive and monotonically |
| * increasing. Set to Frame.TIMESTAMP_UNKNOWN if timestamps are not |
| * meaningful for these textures. |
| */ |
| @GenerateFieldPort(name = "timestamp", hasDefault = true) |
| private long mTimestamp = Frame.TIMESTAMP_UNKNOWN; |
| |
| private Frame mFrame; |
| |
| public GLTextureSource(String name) { |
| super(name); |
| } |
| |
| @Override |
| public void setupPorts() { |
| addOutputPort("frame", ImageFormat.create(ImageFormat.COLORSPACE_RGBA, |
| FrameFormat.TARGET_GPU)); |
| } |
| |
| @Override |
| public void fieldPortValueUpdated(String name, FilterContext context) { |
| // Release frame, so that it is recreated during the next process call |
| if (mFrame != null) { |
| mFrame.release(); |
| mFrame = null; |
| } |
| } |
| |
| @Override |
| public void process(FilterContext context) { |
| // Generate frame if not generated already |
| if (mFrame == null) { |
| FrameFormat outputFormat = ImageFormat.create(mWidth, mHeight, |
| ImageFormat.COLORSPACE_RGBA, |
| FrameFormat.TARGET_GPU); |
| mFrame = context.getFrameManager().newBoundFrame(outputFormat, |
| GLFrame.EXISTING_TEXTURE_BINDING, |
| mTexId); |
| mFrame.setTimestamp(mTimestamp); |
| } |
| |
| // Push output |
| pushOutput("frame", mFrame); |
| |
| if (!mRepeatFrame) { |
| // Close output port as we are done here |
| closeOutputPort("frame"); |
| } |
| } |
| |
| @Override |
| public void tearDown(FilterContext context) { |
| if (mFrame != null) { |
| mFrame.release(); |
| } |
| } |
| |
| } |