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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| /* | ||
| * Copyright 2024 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
| tasks.register('downloadModelFile1', Download) { | ||
| src 'https://storage.googleapis.com/download.tensorflow.org/models/tflite/task_library/style_transfer/android/magenta_arbitrary-image-stylization-v1-256_fp16_prediction_1.tflite' | ||
| dest project.ext.ASSET_DIR + '/predict_float16.tflite' | ||
| overwrite false | ||
| } | ||
|
|
||
| tasks.register('downloadModelFile2', Download) { | ||
| src 'https://storage.googleapis.com/download.tensorflow.org/models/tflite/task_library/style_transfer/android/magenta_arbitrary-image-stylization-v1-256_fp16_transfer_1.tflite' | ||
| dest project.ext.ASSET_DIR + '/transfer_float16.tflite' | ||
| overwrite false | ||
| } | ||
|
|
||
| preBuild.dependsOn downloadModelFile1, downloadModelFile2 |
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229 changes: 229 additions & 0 deletions
229
...edia/video/src/main/java/com/example/platform/media/video/StyleTransferShaderProgram.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,229 @@ | ||
| /* | ||
| * Copyright 2024 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 | ||
| * | ||
| * https://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 com.example.platform.media.video; | ||
|
|
||
| import android.content.Context; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.BitmapFactory; | ||
| import android.opengl.GLES20; | ||
| import android.opengl.GLUtils; | ||
| import android.util.Log; | ||
|
|
||
| import androidx.media3.common.VideoFrameProcessingException; | ||
| import androidx.media3.common.util.GlProgram; | ||
| import androidx.media3.common.util.GlUtil; | ||
| import androidx.media3.common.util.Size; | ||
| import androidx.media3.common.util.UnstableApi; | ||
| import androidx.media3.effect.BaseGlShaderProgram; | ||
|
|
||
| import com.google.common.collect.ImmutableMap; | ||
|
|
||
| import org.tensorflow.lite.DataType; | ||
| import org.tensorflow.lite.Interpreter; | ||
| import org.tensorflow.lite.InterpreterApi; | ||
| import org.tensorflow.lite.gpu.CompatibilityList; | ||
| import org.tensorflow.lite.gpu.GpuDelegate; | ||
| import org.tensorflow.lite.support.common.FileUtil; | ||
| import org.tensorflow.lite.support.common.ops.DequantizeOp; | ||
| import org.tensorflow.lite.support.common.ops.NormalizeOp; | ||
| import org.tensorflow.lite.support.image.ImageProcessor; | ||
| import org.tensorflow.lite.support.image.TensorImage; | ||
| import org.tensorflow.lite.support.image.ops.ResizeOp; | ||
| import org.tensorflow.lite.support.image.ops.ResizeWithCropOrPadOp; | ||
| import org.tensorflow.lite.support.tensorbuffer.TensorBuffer; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.nio.ByteBuffer; | ||
|
|
||
| import javax.microedition.khronos.opengles.GL10; | ||
|
|
||
| @UnstableApi | ||
| final class StyleTransferShaderProgram extends BaseGlShaderProgram { | ||
|
|
||
| private static final String VERTEX_SHADER_PATH = "shaders/vertex_shader_transformation_es2.glsl"; | ||
| private static final String FRAGMENT_SHADER_PATH = "shaders/fragment_shader_copy_es2.glsl"; | ||
|
|
||
| private final GlProgram glProgram; | ||
| private final InterpreterApi transformInterpreter; | ||
| private final int inputTransformTargetHeight; | ||
| private final int inputTransformTargetWidth; | ||
| private final int[] outputTransformShape; | ||
|
|
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| private final TensorBuffer predictOutput; | ||
|
|
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| private int width; | ||
| private int height; | ||
|
|
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| public StyleTransferShaderProgram(Context context, String styleAssetFileName) | ||
| throws VideoFrameProcessingException { | ||
| super(/* useHighPrecisionColorComponents= */ false, /* texturePoolCapacity= */ 1); | ||
|
|
||
| try { | ||
| glProgram = new GlProgram(context, VERTEX_SHADER_PATH, FRAGMENT_SHADER_PATH); | ||
|
|
||
| Interpreter.Options options = new Interpreter.Options(); | ||
|
|
||
| CompatibilityList compatibilityList = new CompatibilityList(); | ||
| if (compatibilityList.isDelegateSupportedOnThisDevice()) { | ||
| GpuDelegate.Options gpuDelegateOptions = compatibilityList.getBestOptionsForThisDevice(); | ||
| GpuDelegate gpuDelegate = new GpuDelegate(gpuDelegateOptions); | ||
| options.addDelegate(gpuDelegate); | ||
| } else { | ||
| options.setNumThreads(6); | ||
| } | ||
| String predictModel = "predict_float16.tflite"; | ||
| String transferModel = "transfer_float16.tflite"; | ||
| Interpreter predictInterpeter = | ||
| new Interpreter(FileUtil.loadMappedFile(context, predictModel), options); | ||
| transformInterpreter = | ||
| InterpreterApi.create(FileUtil.loadMappedFile(context, transferModel), options); | ||
| int inputPredictTargetHeight = predictInterpeter.getInputTensor(0).shape()[1]; | ||
| int inputPredictTargetWidth = predictInterpeter.getInputTensor(0).shape()[2]; | ||
| int[] outputPredictShape = predictInterpeter.getOutputTensor(0).shape(); | ||
|
|
||
| inputTransformTargetHeight = transformInterpreter.getInputTensor(0).shape()[1]; | ||
| inputTransformTargetWidth = transformInterpreter.getInputTensor(0).shape()[2]; | ||
| outputTransformShape = transformInterpreter.getOutputTensor(0).shape(); | ||
|
|
||
| InputStream inputStream = context.getAssets().open(styleAssetFileName); | ||
| Bitmap styleImage = BitmapFactory.decodeStream(inputStream); | ||
| inputStream.close(); | ||
| TensorImage styleTensorImage = | ||
| getScaledTensorImage(styleImage, inputPredictTargetWidth, inputPredictTargetHeight); | ||
| predictOutput = TensorBuffer.createFixedSize(outputPredictShape, DataType.FLOAT32); | ||
| predictInterpeter.run(styleTensorImage.getBuffer(), predictOutput.getBuffer()); | ||
| } catch (IOException | GlUtil.GlException e) { | ||
| Log.w("DEBUG", "Error setting up TfShaderProgram", e); | ||
| throw new VideoFrameProcessingException(e); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public Size configure(int inputWidth, int inputHeight) { | ||
| width = inputWidth; | ||
| height = inputHeight; | ||
| return new Size(inputWidth, inputHeight); | ||
| } | ||
|
|
||
| @Override | ||
| public void drawFrame(int inputTexId, long presentationTimeUs) | ||
| throws VideoFrameProcessingException { | ||
| ByteBuffer pixelBuffer = ByteBuffer.allocateDirect(width * height * 4); | ||
|
|
||
| Bitmap bitmap; | ||
| int texId; | ||
| try { | ||
| int[] boundFramebuffer = new int[1]; | ||
| GLES20.glGetIntegerv(GLES20.GL_FRAMEBUFFER_BINDING, boundFramebuffer, /* offset= */ 0); | ||
|
|
||
| int fboId = GlUtil.createFboForTexture(inputTexId); | ||
| GlUtil.focusFramebufferUsingCurrentContext(fboId, width, height); | ||
| GLES20.glReadPixels( | ||
| /* x= */ 0, | ||
| /* y= */ 0, | ||
| width, | ||
| height, | ||
| GLES20.GL_RGBA, | ||
| GLES20.GL_UNSIGNED_BYTE, | ||
| pixelBuffer); | ||
| GlUtil.checkGlError(); | ||
| bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); | ||
| bitmap.copyPixelsFromBuffer(pixelBuffer); | ||
|
|
||
| Log.w("DEBUG", "Process frame at " + (presentationTimeUs / 1000) + " ms"); | ||
| long before = System.currentTimeMillis(); | ||
| TensorImage tensorImage = | ||
| getScaledTensorImage(bitmap, inputTransformTargetWidth, inputTransformTargetHeight); | ||
| Log.w("DEBUG", "- Scale " + (System.currentTimeMillis() - before) + " ms"); | ||
| TensorBuffer outputImage = | ||
| TensorBuffer.createFixedSize(outputTransformShape, DataType.FLOAT32); | ||
|
|
||
| before = System.currentTimeMillis(); | ||
| transformInterpreter.runForMultipleInputsOutputs( | ||
| new Object[] {tensorImage.getBuffer(), predictOutput.getBuffer()}, | ||
| ImmutableMap.<Integer, Object>builder().put(0, outputImage.getBuffer()).build()); | ||
|
|
||
| Log.w("DEBUG", "- Run " + (System.currentTimeMillis() - before) + " ms"); | ||
|
|
||
| before = System.currentTimeMillis(); | ||
| ImageProcessor imagePostProcessor = | ||
| new ImageProcessor.Builder() | ||
| .add(new DequantizeOp(/* zeroPoint= */ 0f, /* scale= */ 255f)) | ||
| .build(); | ||
| TensorImage outputTensorImage = new TensorImage(DataType.FLOAT32); | ||
| outputTensorImage.load(outputImage); | ||
| Log.w("DEBUG", "- Load output " + (System.currentTimeMillis() - before) + " ms"); | ||
|
|
||
| before = System.currentTimeMillis(); | ||
| Bitmap outputBitmap = imagePostProcessor.process(outputTensorImage).getBitmap(); | ||
| Log.w("DEBUG", "- Post process output " + (System.currentTimeMillis() - before) + " ms"); | ||
|
|
||
| texId = | ||
| GlUtil.createTexture( | ||
| outputBitmap.getWidth(), | ||
| outputBitmap.getHeight(), | ||
| /* useHighPrecisionColorComponents= */ false); | ||
| GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texId); | ||
| GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST); | ||
| GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR); | ||
| GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_REPEAT); | ||
| GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_REPEAT); | ||
| GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, /* level= */ 0, outputBitmap, /* border= */ 0); | ||
| GlUtil.checkGlError(); | ||
|
|
||
| GlUtil.focusFramebufferUsingCurrentContext(boundFramebuffer[0], width, height); | ||
|
|
||
| glProgram.use(); | ||
| glProgram.setSamplerTexIdUniform("uTexSampler", texId, /* texUnitIndex= */ 0); | ||
| float[] identityMatrix = GlUtil.create4x4IdentityMatrix(); | ||
| glProgram.setFloatsUniform("uTexTransformationMatrix", identityMatrix); | ||
| glProgram.setFloatsUniform("uTransformationMatrix", identityMatrix); | ||
| // glProgram.setFloatsUniform("uRgbMatrix", identityMatrix); | ||
| glProgram.setBufferAttribute( | ||
| "aFramePosition", | ||
| GlUtil.getNormalizedCoordinateBounds(), | ||
| GlUtil.HOMOGENEOUS_COORDINATE_VECTOR_SIZE); | ||
| glProgram.bindAttributesAndUniforms(); | ||
|
|
||
| GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, /* first= */ 0, /* count= */ 4); | ||
| GlUtil.checkGlError(); | ||
|
|
||
| GlUtil.deleteTexture(texId); | ||
| } catch (GlUtil.GlException e) { | ||
| throw VideoFrameProcessingException.from(e); | ||
| } | ||
| } | ||
|
|
||
| private static TensorImage getScaledTensorImage( | ||
| Bitmap bitmap, int targetWidth, int targetHeight) { | ||
| int cropSize = Math.min(bitmap.getWidth(), bitmap.getHeight()); | ||
| ImageProcessor imageProcessor = | ||
| new ImageProcessor.Builder() | ||
| .add(new ResizeWithCropOrPadOp(cropSize, cropSize)) | ||
| .add( | ||
| new ResizeOp( | ||
| targetHeight, | ||
| targetWidth, | ||
| ResizeOp.ResizeMethod.BILINEAR)) // TODO: Not sure why they are swapped? | ||
| .add(new NormalizeOp(/* mean= */ 0f, /* stddev= */ 255f)) | ||
| .build(); | ||
| TensorImage tensorImage = new TensorImage(DataType.FLOAT32); | ||
| tensorImage.load(bitmap); | ||
| return imageProcessor.process(tensorImage); | ||
| } | ||
| } |
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