mirror of
https://github.com/mollyim/webrtc.git
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e3044fe12e
This should help users of the library to more easily debug issues. Bug: None Change-Id: I85d8101d3b26ccbc34c8beded069461252e61293 Reviewed-on: https://webrtc-review.googlesource.com/4663 Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Commit-Queue: Sami Kalliomäki <sakal@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20073}
942 lines
39 KiB
Java
942 lines
39 KiB
Java
/*
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* Copyright 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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package org.webrtc;
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import android.annotation.TargetApi;
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import android.graphics.Matrix;
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import android.media.MediaCodec;
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import android.media.MediaCodecInfo;
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import android.media.MediaCodecInfo.CodecCapabilities;
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import android.media.MediaCodecList;
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import android.media.MediaFormat;
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import android.opengl.GLES20;
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import android.os.Build;
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import android.os.Bundle;
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import android.view.Surface;
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import java.nio.ByteBuffer;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.TimeUnit;
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// Java-side of peerconnection_jni.cc:MediaCodecVideoEncoder.
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// This class is an implementation detail of the Java PeerConnection API.
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@TargetApi(19)
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@SuppressWarnings("deprecation")
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public class MediaCodecVideoEncoder {
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// This class is constructed, operated, and destroyed by its C++ incarnation,
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// so the class and its methods have non-public visibility. The API this
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// class exposes aims to mimic the webrtc::VideoEncoder API as closely as
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// possibly to minimize the amount of translation work necessary.
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private static final String TAG = "MediaCodecVideoEncoder";
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// Tracks webrtc::VideoCodecType.
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public enum VideoCodecType { VIDEO_CODEC_VP8, VIDEO_CODEC_VP9, VIDEO_CODEC_H264 }
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private static final int MEDIA_CODEC_RELEASE_TIMEOUT_MS = 5000; // Timeout for codec releasing.
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private static final int DEQUEUE_TIMEOUT = 0; // Non-blocking, no wait.
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private static final int BITRATE_ADJUSTMENT_FPS = 30;
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private static final int MAXIMUM_INITIAL_FPS = 30;
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private static final double BITRATE_CORRECTION_SEC = 3.0;
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// Maximum bitrate correction scale - no more than 4 times.
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private static final double BITRATE_CORRECTION_MAX_SCALE = 4;
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// Amount of correction steps to reach correction maximum scale.
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private static final int BITRATE_CORRECTION_STEPS = 20;
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// Forced key frame interval - used to reduce color distortions on Qualcomm platform.
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private static final long QCOM_VP8_KEY_FRAME_INTERVAL_ANDROID_L_MS = 15000;
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private static final long QCOM_VP8_KEY_FRAME_INTERVAL_ANDROID_M_MS = 20000;
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private static final long QCOM_VP8_KEY_FRAME_INTERVAL_ANDROID_N_MS = 15000;
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// Active running encoder instance. Set in initEncode() (called from native code)
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// and reset to null in release() call.
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private static MediaCodecVideoEncoder runningInstance = null;
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private static MediaCodecVideoEncoderErrorCallback errorCallback = null;
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private static int codecErrors = 0;
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// List of disabled codec types - can be set from application.
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private static Set<String> hwEncoderDisabledTypes = new HashSet<String>();
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private Thread mediaCodecThread;
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private MediaCodec mediaCodec;
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private ByteBuffer[] outputBuffers;
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private EglBase14 eglBase;
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private int profile;
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private int width;
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private int height;
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private Surface inputSurface;
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private GlRectDrawer drawer;
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private static final String VP8_MIME_TYPE = "video/x-vnd.on2.vp8";
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private static final String VP9_MIME_TYPE = "video/x-vnd.on2.vp9";
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private static final String H264_MIME_TYPE = "video/avc";
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private static final int VIDEO_AVCProfileHigh = 8;
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private static final int VIDEO_AVCLevel3 = 0x100;
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// Type of bitrate adjustment for video encoder.
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public enum BitrateAdjustmentType {
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// No adjustment - video encoder has no known bitrate problem.
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NO_ADJUSTMENT,
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// Framerate based bitrate adjustment is required - HW encoder does not use frame
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// timestamps to calculate frame bitrate budget and instead is relying on initial
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// fps configuration assuming that all frames are coming at fixed initial frame rate.
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FRAMERATE_ADJUSTMENT,
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// Dynamic bitrate adjustment is required - HW encoder used frame timestamps, but actual
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// bitrate deviates too much from the target value.
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DYNAMIC_ADJUSTMENT
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}
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// Should be in sync with webrtc::H264::Profile.
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public static enum H264Profile {
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CONSTRAINED_BASELINE(0),
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BASELINE(1),
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MAIN(2),
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CONSTRAINED_HIGH(3),
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HIGH(4);
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private final int value;
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H264Profile(int value) {
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this.value = value;
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}
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public int getValue() {
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return value;
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}
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}
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// Class describing supported media codec properties.
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private static class MediaCodecProperties {
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public final String codecPrefix;
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// Minimum Android SDK required for this codec to be used.
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public final int minSdk;
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// Flag if encoder implementation does not use frame timestamps to calculate frame bitrate
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// budget and instead is relying on initial fps configuration assuming that all frames are
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// coming at fixed initial frame rate. Bitrate adjustment is required for this case.
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public final BitrateAdjustmentType bitrateAdjustmentType;
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MediaCodecProperties(
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String codecPrefix, int minSdk, BitrateAdjustmentType bitrateAdjustmentType) {
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this.codecPrefix = codecPrefix;
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this.minSdk = minSdk;
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this.bitrateAdjustmentType = bitrateAdjustmentType;
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}
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}
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// List of supported HW VP8 encoders.
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private static final MediaCodecProperties qcomVp8HwProperties = new MediaCodecProperties(
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"OMX.qcom.", Build.VERSION_CODES.KITKAT, BitrateAdjustmentType.NO_ADJUSTMENT);
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private static final MediaCodecProperties exynosVp8HwProperties = new MediaCodecProperties(
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"OMX.Exynos.", Build.VERSION_CODES.M, BitrateAdjustmentType.DYNAMIC_ADJUSTMENT);
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private static final MediaCodecProperties intelVp8HwProperties = new MediaCodecProperties(
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"OMX.Intel.", Build.VERSION_CODES.LOLLIPOP, BitrateAdjustmentType.NO_ADJUSTMENT);
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private static MediaCodecProperties[] vp8HwList() {
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final ArrayList<MediaCodecProperties> supported_codecs = new ArrayList<MediaCodecProperties>();
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supported_codecs.add(qcomVp8HwProperties);
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supported_codecs.add(exynosVp8HwProperties);
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if (PeerConnectionFactory.fieldTrialsFindFullName("WebRTC-IntelVP8").equals("Enabled")) {
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supported_codecs.add(intelVp8HwProperties);
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}
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return supported_codecs.toArray(new MediaCodecProperties[supported_codecs.size()]);
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}
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// List of supported HW VP9 encoders.
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private static final MediaCodecProperties qcomVp9HwProperties = new MediaCodecProperties(
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"OMX.qcom.", Build.VERSION_CODES.N, BitrateAdjustmentType.NO_ADJUSTMENT);
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private static final MediaCodecProperties exynosVp9HwProperties = new MediaCodecProperties(
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"OMX.Exynos.", Build.VERSION_CODES.N, BitrateAdjustmentType.FRAMERATE_ADJUSTMENT);
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private static final MediaCodecProperties[] vp9HwList =
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new MediaCodecProperties[] {qcomVp9HwProperties, exynosVp9HwProperties};
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// List of supported HW H.264 encoders.
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private static final MediaCodecProperties qcomH264HwProperties = new MediaCodecProperties(
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"OMX.qcom.", Build.VERSION_CODES.KITKAT, BitrateAdjustmentType.NO_ADJUSTMENT);
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private static final MediaCodecProperties exynosH264HwProperties = new MediaCodecProperties(
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"OMX.Exynos.", Build.VERSION_CODES.LOLLIPOP, BitrateAdjustmentType.FRAMERATE_ADJUSTMENT);
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private static final MediaCodecProperties[] h264HwList =
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new MediaCodecProperties[] {qcomH264HwProperties, exynosH264HwProperties};
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// List of supported HW H.264 high profile encoders.
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private static final MediaCodecProperties exynosH264HighProfileHwProperties =
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new MediaCodecProperties(
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"OMX.Exynos.", Build.VERSION_CODES.M, BitrateAdjustmentType.FRAMERATE_ADJUSTMENT);
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private static final MediaCodecProperties[] h264HighProfileHwList =
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new MediaCodecProperties[] {exynosH264HighProfileHwProperties};
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// List of devices with poor H.264 encoder quality.
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// HW H.264 encoder on below devices has poor bitrate control - actual
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// bitrates deviates a lot from the target value.
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private static final String[] H264_HW_EXCEPTION_MODELS =
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new String[] {"SAMSUNG-SGH-I337", "Nexus 7", "Nexus 4"};
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// Bitrate modes - should be in sync with OMX_VIDEO_CONTROLRATETYPE defined
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// in OMX_Video.h
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private static final int VIDEO_ControlRateConstant = 2;
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// NV12 color format supported by QCOM codec, but not declared in MediaCodec -
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// see /hardware/qcom/media/mm-core/inc/OMX_QCOMExtns.h
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private static final int COLOR_QCOM_FORMATYUV420PackedSemiPlanar32m = 0x7FA30C04;
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// Allowable color formats supported by codec - in order of preference.
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private static final int[] supportedColorList = {CodecCapabilities.COLOR_FormatYUV420Planar,
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CodecCapabilities.COLOR_FormatYUV420SemiPlanar,
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CodecCapabilities.COLOR_QCOM_FormatYUV420SemiPlanar,
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COLOR_QCOM_FORMATYUV420PackedSemiPlanar32m};
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private static final int[] supportedSurfaceColorList = {CodecCapabilities.COLOR_FormatSurface};
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private VideoCodecType type;
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private int colorFormat; // Used by native code.
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// Variables used for dynamic bitrate adjustment.
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private BitrateAdjustmentType bitrateAdjustmentType = BitrateAdjustmentType.NO_ADJUSTMENT;
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private double bitrateAccumulator;
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private double bitrateAccumulatorMax;
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private double bitrateObservationTimeMs;
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private int bitrateAdjustmentScaleExp;
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private int targetBitrateBps;
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private int targetFps;
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// Interval in ms to force key frame generation. Used to reduce the time of color distortions
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// happened sometime when using Qualcomm video encoder.
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private long forcedKeyFrameMs;
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private long lastKeyFrameMs;
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// SPS and PPS NALs (Config frame) for H.264.
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private ByteBuffer configData = null;
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// MediaCodec error handler - invoked when critical error happens which may prevent
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// further use of media codec API. Now it means that one of media codec instances
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// is hanging and can no longer be used in the next call.
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public static interface MediaCodecVideoEncoderErrorCallback {
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void onMediaCodecVideoEncoderCriticalError(int codecErrors);
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}
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public static void setErrorCallback(MediaCodecVideoEncoderErrorCallback errorCallback) {
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Logging.d(TAG, "Set error callback");
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MediaCodecVideoEncoder.errorCallback = errorCallback;
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}
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// Functions to disable HW encoding - can be called from applications for platforms
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// which have known HW decoding problems.
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public static void disableVp8HwCodec() {
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Logging.w(TAG, "VP8 encoding is disabled by application.");
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hwEncoderDisabledTypes.add(VP8_MIME_TYPE);
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}
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public static void disableVp9HwCodec() {
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Logging.w(TAG, "VP9 encoding is disabled by application.");
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hwEncoderDisabledTypes.add(VP9_MIME_TYPE);
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}
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public static void disableH264HwCodec() {
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Logging.w(TAG, "H.264 encoding is disabled by application.");
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hwEncoderDisabledTypes.add(H264_MIME_TYPE);
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}
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// Functions to query if HW encoding is supported.
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public static boolean isVp8HwSupported() {
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return !hwEncoderDisabledTypes.contains(VP8_MIME_TYPE)
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&& (findHwEncoder(VP8_MIME_TYPE, vp8HwList(), supportedColorList) != null);
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}
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public static EncoderProperties vp8HwEncoderProperties() {
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if (hwEncoderDisabledTypes.contains(VP8_MIME_TYPE)) {
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return null;
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} else {
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return findHwEncoder(VP8_MIME_TYPE, vp8HwList(), supportedColorList);
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}
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}
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public static boolean isVp9HwSupported() {
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return !hwEncoderDisabledTypes.contains(VP9_MIME_TYPE)
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&& (findHwEncoder(VP9_MIME_TYPE, vp9HwList, supportedColorList) != null);
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}
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public static boolean isH264HwSupported() {
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return !hwEncoderDisabledTypes.contains(H264_MIME_TYPE)
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&& (findHwEncoder(H264_MIME_TYPE, h264HwList, supportedColorList) != null);
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}
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public static boolean isH264HighProfileHwSupported() {
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return !hwEncoderDisabledTypes.contains(H264_MIME_TYPE)
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&& (findHwEncoder(H264_MIME_TYPE, h264HighProfileHwList, supportedColorList) != null);
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}
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public static boolean isVp8HwSupportedUsingTextures() {
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return !hwEncoderDisabledTypes.contains(VP8_MIME_TYPE)
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&& (findHwEncoder(VP8_MIME_TYPE, vp8HwList(), supportedSurfaceColorList) != null);
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}
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public static boolean isVp9HwSupportedUsingTextures() {
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return !hwEncoderDisabledTypes.contains(VP9_MIME_TYPE)
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&& (findHwEncoder(VP9_MIME_TYPE, vp9HwList, supportedSurfaceColorList) != null);
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}
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public static boolean isH264HwSupportedUsingTextures() {
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return !hwEncoderDisabledTypes.contains(H264_MIME_TYPE)
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&& (findHwEncoder(H264_MIME_TYPE, h264HwList, supportedSurfaceColorList) != null);
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}
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// Helper struct for findHwEncoder() below.
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public static class EncoderProperties {
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public EncoderProperties(
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String codecName, int colorFormat, BitrateAdjustmentType bitrateAdjustmentType) {
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this.codecName = codecName;
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this.colorFormat = colorFormat;
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this.bitrateAdjustmentType = bitrateAdjustmentType;
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}
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public final String codecName; // OpenMax component name for HW codec.
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public final int colorFormat; // Color format supported by codec.
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public final BitrateAdjustmentType bitrateAdjustmentType; // Bitrate adjustment type
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}
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private static EncoderProperties findHwEncoder(
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String mime, MediaCodecProperties[] supportedHwCodecProperties, int[] colorList) {
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// MediaCodec.setParameters is missing for JB and below, so bitrate
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// can not be adjusted dynamically.
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
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return null;
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}
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// Check if device is in H.264 exception list.
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if (mime.equals(H264_MIME_TYPE)) {
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List<String> exceptionModels = Arrays.asList(H264_HW_EXCEPTION_MODELS);
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if (exceptionModels.contains(Build.MODEL)) {
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Logging.w(TAG, "Model: " + Build.MODEL + " has black listed H.264 encoder.");
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return null;
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}
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}
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for (int i = 0; i < MediaCodecList.getCodecCount(); ++i) {
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MediaCodecInfo info = null;
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try {
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info = MediaCodecList.getCodecInfoAt(i);
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} catch (IllegalArgumentException e) {
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Logging.e(TAG, "Cannot retrieve encoder codec info", e);
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}
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if (info == null || !info.isEncoder()) {
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continue;
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}
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String name = null;
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for (String mimeType : info.getSupportedTypes()) {
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if (mimeType.equals(mime)) {
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name = info.getName();
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break;
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}
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}
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if (name == null) {
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continue; // No HW support in this codec; try the next one.
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}
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Logging.v(TAG, "Found candidate encoder " + name);
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// Check if this is supported HW encoder.
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boolean supportedCodec = false;
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BitrateAdjustmentType bitrateAdjustmentType = BitrateAdjustmentType.NO_ADJUSTMENT;
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for (MediaCodecProperties codecProperties : supportedHwCodecProperties) {
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if (name.startsWith(codecProperties.codecPrefix)) {
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if (Build.VERSION.SDK_INT < codecProperties.minSdk) {
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Logging.w(
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TAG, "Codec " + name + " is disabled due to SDK version " + Build.VERSION.SDK_INT);
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continue;
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}
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if (codecProperties.bitrateAdjustmentType != BitrateAdjustmentType.NO_ADJUSTMENT) {
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bitrateAdjustmentType = codecProperties.bitrateAdjustmentType;
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Logging.w(
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TAG, "Codec " + name + " requires bitrate adjustment: " + bitrateAdjustmentType);
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}
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supportedCodec = true;
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break;
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}
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}
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if (!supportedCodec) {
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continue;
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}
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// Check if HW codec supports known color format.
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CodecCapabilities capabilities;
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try {
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capabilities = info.getCapabilitiesForType(mime);
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} catch (IllegalArgumentException e) {
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Logging.e(TAG, "Cannot retrieve encoder capabilities", e);
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continue;
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}
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for (int colorFormat : capabilities.colorFormats) {
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Logging.v(TAG, " Color: 0x" + Integer.toHexString(colorFormat));
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}
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for (int supportedColorFormat : colorList) {
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for (int codecColorFormat : capabilities.colorFormats) {
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if (codecColorFormat == supportedColorFormat) {
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// Found supported HW encoder.
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Logging.d(TAG, "Found target encoder for mime " + mime + " : " + name + ". Color: 0x"
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+ Integer.toHexString(codecColorFormat) + ". Bitrate adjustment: "
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+ bitrateAdjustmentType);
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return new EncoderProperties(name, codecColorFormat, bitrateAdjustmentType);
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}
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}
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}
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}
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return null; // No HW encoder.
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}
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private void checkOnMediaCodecThread() {
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if (mediaCodecThread.getId() != Thread.currentThread().getId()) {
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throw new RuntimeException("MediaCodecVideoEncoder previously operated on " + mediaCodecThread
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+ " but is now called on " + Thread.currentThread());
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}
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}
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public static void printStackTrace() {
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if (runningInstance != null && runningInstance.mediaCodecThread != null) {
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StackTraceElement[] mediaCodecStackTraces = runningInstance.mediaCodecThread.getStackTrace();
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if (mediaCodecStackTraces.length > 0) {
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Logging.d(TAG, "MediaCodecVideoEncoder stacks trace:");
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for (StackTraceElement stackTrace : mediaCodecStackTraces) {
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Logging.d(TAG, stackTrace.toString());
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}
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}
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}
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}
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static MediaCodec createByCodecName(String codecName) {
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try {
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// In the L-SDK this call can throw IOException so in order to work in
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// both cases catch an exception.
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return MediaCodec.createByCodecName(codecName);
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} catch (Exception e) {
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return null;
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}
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}
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boolean initEncode(VideoCodecType type, int profile, int width, int height, int kbps, int fps,
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EglBase14.Context sharedContext) {
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final boolean useSurface = sharedContext != null;
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Logging.d(TAG,
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"Java initEncode: " + type + ". Profile: " + profile + " : " + width + " x " + height
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+ ". @ " + kbps + " kbps. Fps: " + fps + ". Encode from texture : " + useSurface);
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this.profile = profile;
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this.width = width;
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this.height = height;
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if (mediaCodecThread != null) {
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throw new RuntimeException("Forgot to release()?");
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}
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EncoderProperties properties = null;
|
|
String mime = null;
|
|
int keyFrameIntervalSec = 0;
|
|
boolean configureH264HighProfile = false;
|
|
if (type == VideoCodecType.VIDEO_CODEC_VP8) {
|
|
mime = VP8_MIME_TYPE;
|
|
properties = findHwEncoder(
|
|
VP8_MIME_TYPE, vp8HwList(), useSurface ? supportedSurfaceColorList : supportedColorList);
|
|
keyFrameIntervalSec = 100;
|
|
} else if (type == VideoCodecType.VIDEO_CODEC_VP9) {
|
|
mime = VP9_MIME_TYPE;
|
|
properties = findHwEncoder(
|
|
VP9_MIME_TYPE, vp9HwList, useSurface ? supportedSurfaceColorList : supportedColorList);
|
|
keyFrameIntervalSec = 100;
|
|
} else if (type == VideoCodecType.VIDEO_CODEC_H264) {
|
|
mime = H264_MIME_TYPE;
|
|
properties = findHwEncoder(
|
|
H264_MIME_TYPE, h264HwList, useSurface ? supportedSurfaceColorList : supportedColorList);
|
|
if (profile == H264Profile.CONSTRAINED_HIGH.getValue()) {
|
|
EncoderProperties h264HighProfileProperties = findHwEncoder(H264_MIME_TYPE,
|
|
h264HighProfileHwList, useSurface ? supportedSurfaceColorList : supportedColorList);
|
|
if (h264HighProfileProperties != null) {
|
|
Logging.d(TAG, "High profile H.264 encoder supported.");
|
|
configureH264HighProfile = true;
|
|
} else {
|
|
Logging.d(TAG, "High profile H.264 encoder requested, but not supported. Use baseline.");
|
|
}
|
|
}
|
|
keyFrameIntervalSec = 20;
|
|
}
|
|
if (properties == null) {
|
|
throw new RuntimeException("Can not find HW encoder for " + type);
|
|
}
|
|
runningInstance = this; // Encoder is now running and can be queried for stack traces.
|
|
colorFormat = properties.colorFormat;
|
|
bitrateAdjustmentType = properties.bitrateAdjustmentType;
|
|
if (bitrateAdjustmentType == BitrateAdjustmentType.FRAMERATE_ADJUSTMENT) {
|
|
fps = BITRATE_ADJUSTMENT_FPS;
|
|
} else {
|
|
fps = Math.min(fps, MAXIMUM_INITIAL_FPS);
|
|
}
|
|
|
|
forcedKeyFrameMs = 0;
|
|
lastKeyFrameMs = -1;
|
|
if (type == VideoCodecType.VIDEO_CODEC_VP8
|
|
&& properties.codecName.startsWith(qcomVp8HwProperties.codecPrefix)) {
|
|
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP
|
|
|| Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP_MR1) {
|
|
forcedKeyFrameMs = QCOM_VP8_KEY_FRAME_INTERVAL_ANDROID_L_MS;
|
|
} else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.M) {
|
|
forcedKeyFrameMs = QCOM_VP8_KEY_FRAME_INTERVAL_ANDROID_M_MS;
|
|
} else if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {
|
|
forcedKeyFrameMs = QCOM_VP8_KEY_FRAME_INTERVAL_ANDROID_N_MS;
|
|
}
|
|
}
|
|
|
|
Logging.d(TAG, "Color format: " + colorFormat + ". Bitrate adjustment: " + bitrateAdjustmentType
|
|
+ ". Key frame interval: " + forcedKeyFrameMs + " . Initial fps: " + fps);
|
|
targetBitrateBps = 1000 * kbps;
|
|
targetFps = fps;
|
|
bitrateAccumulatorMax = targetBitrateBps / 8.0;
|
|
bitrateAccumulator = 0;
|
|
bitrateObservationTimeMs = 0;
|
|
bitrateAdjustmentScaleExp = 0;
|
|
|
|
mediaCodecThread = Thread.currentThread();
|
|
try {
|
|
MediaFormat format = MediaFormat.createVideoFormat(mime, width, height);
|
|
format.setInteger(MediaFormat.KEY_BIT_RATE, targetBitrateBps);
|
|
format.setInteger("bitrate-mode", VIDEO_ControlRateConstant);
|
|
format.setInteger(MediaFormat.KEY_COLOR_FORMAT, properties.colorFormat);
|
|
format.setInteger(MediaFormat.KEY_FRAME_RATE, targetFps);
|
|
format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, keyFrameIntervalSec);
|
|
if (configureH264HighProfile) {
|
|
format.setInteger("profile", VIDEO_AVCProfileHigh);
|
|
format.setInteger("level", VIDEO_AVCLevel3);
|
|
}
|
|
Logging.d(TAG, " Format: " + format);
|
|
mediaCodec = createByCodecName(properties.codecName);
|
|
this.type = type;
|
|
if (mediaCodec == null) {
|
|
Logging.e(TAG, "Can not create media encoder");
|
|
release();
|
|
return false;
|
|
}
|
|
mediaCodec.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
|
|
|
|
if (useSurface) {
|
|
eglBase = new EglBase14(sharedContext, EglBase.CONFIG_RECORDABLE);
|
|
// Create an input surface and keep a reference since we must release the surface when done.
|
|
inputSurface = mediaCodec.createInputSurface();
|
|
eglBase.createSurface(inputSurface);
|
|
drawer = new GlRectDrawer();
|
|
}
|
|
mediaCodec.start();
|
|
outputBuffers = mediaCodec.getOutputBuffers();
|
|
Logging.d(TAG, "Output buffers: " + outputBuffers.length);
|
|
|
|
} catch (IllegalStateException e) {
|
|
Logging.e(TAG, "initEncode failed", e);
|
|
release();
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
ByteBuffer[] getInputBuffers() {
|
|
ByteBuffer[] inputBuffers = mediaCodec.getInputBuffers();
|
|
Logging.d(TAG, "Input buffers: " + inputBuffers.length);
|
|
return inputBuffers;
|
|
}
|
|
|
|
void checkKeyFrameRequired(boolean requestedKeyFrame, long presentationTimestampUs) {
|
|
long presentationTimestampMs = (presentationTimestampUs + 500) / 1000;
|
|
if (lastKeyFrameMs < 0) {
|
|
lastKeyFrameMs = presentationTimestampMs;
|
|
}
|
|
boolean forcedKeyFrame = false;
|
|
if (!requestedKeyFrame && forcedKeyFrameMs > 0
|
|
&& presentationTimestampMs > lastKeyFrameMs + forcedKeyFrameMs) {
|
|
forcedKeyFrame = true;
|
|
}
|
|
if (requestedKeyFrame || forcedKeyFrame) {
|
|
// Ideally MediaCodec would honor BUFFER_FLAG_SYNC_FRAME so we could
|
|
// indicate this in queueInputBuffer() below and guarantee _this_ frame
|
|
// be encoded as a key frame, but sadly that flag is ignored. Instead,
|
|
// we request a key frame "soon".
|
|
if (requestedKeyFrame) {
|
|
Logging.d(TAG, "Sync frame request");
|
|
} else {
|
|
Logging.d(TAG, "Sync frame forced");
|
|
}
|
|
Bundle b = new Bundle();
|
|
b.putInt(MediaCodec.PARAMETER_KEY_REQUEST_SYNC_FRAME, 0);
|
|
mediaCodec.setParameters(b);
|
|
lastKeyFrameMs = presentationTimestampMs;
|
|
}
|
|
}
|
|
|
|
boolean encodeBuffer(
|
|
boolean isKeyframe, int inputBuffer, int size, long presentationTimestampUs) {
|
|
checkOnMediaCodecThread();
|
|
try {
|
|
checkKeyFrameRequired(isKeyframe, presentationTimestampUs);
|
|
mediaCodec.queueInputBuffer(inputBuffer, 0, size, presentationTimestampUs, 0);
|
|
return true;
|
|
} catch (IllegalStateException e) {
|
|
Logging.e(TAG, "encodeBuffer failed", e);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
boolean encodeTexture(boolean isKeyframe, int oesTextureId, float[] transformationMatrix,
|
|
long presentationTimestampUs) {
|
|
checkOnMediaCodecThread();
|
|
try {
|
|
checkKeyFrameRequired(isKeyframe, presentationTimestampUs);
|
|
eglBase.makeCurrent();
|
|
// TODO(perkj): glClear() shouldn't be necessary since every pixel is covered anyway,
|
|
// but it's a workaround for bug webrtc:5147.
|
|
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
|
|
drawer.drawOes(oesTextureId, transformationMatrix, width, height, 0, 0, width, height);
|
|
eglBase.swapBuffers(TimeUnit.MICROSECONDS.toNanos(presentationTimestampUs));
|
|
return true;
|
|
} catch (RuntimeException e) {
|
|
Logging.e(TAG, "encodeTexture failed", e);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Encodes a new style VideoFrame. Called by JNI. |bufferIndex| is -1 if we are not encoding in
|
|
* surface mode.
|
|
*/
|
|
boolean encodeFrame(long nativeEncoder, boolean isKeyframe, VideoFrame frame, int bufferIndex) {
|
|
checkOnMediaCodecThread();
|
|
try {
|
|
long presentationTimestampUs = TimeUnit.NANOSECONDS.toMicros(frame.getTimestampNs());
|
|
checkKeyFrameRequired(isKeyframe, presentationTimestampUs);
|
|
|
|
VideoFrame.Buffer buffer = frame.getBuffer();
|
|
if (buffer instanceof VideoFrame.TextureBuffer) {
|
|
VideoFrame.TextureBuffer textureBuffer = (VideoFrame.TextureBuffer) buffer;
|
|
eglBase.makeCurrent();
|
|
// TODO(perkj): glClear() shouldn't be necessary since every pixel is covered anyway,
|
|
// but it's a workaround for bug webrtc:5147.
|
|
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
|
|
VideoFrameDrawer.drawTexture(drawer, textureBuffer, new Matrix() /* renderMatrix */, width,
|
|
height, 0 /* viewportX */, 0 /* viewportY */, width, height);
|
|
eglBase.swapBuffers(frame.getTimestampNs());
|
|
} else {
|
|
VideoFrame.I420Buffer i420Buffer = buffer.toI420();
|
|
final int chromaHeight = (height + 1) / 2;
|
|
final ByteBuffer dataY = i420Buffer.getDataY();
|
|
final ByteBuffer dataU = i420Buffer.getDataU();
|
|
final ByteBuffer dataV = i420Buffer.getDataV();
|
|
final int strideY = i420Buffer.getStrideY();
|
|
final int strideU = i420Buffer.getStrideU();
|
|
final int strideV = i420Buffer.getStrideV();
|
|
if (dataY.capacity() < strideY * height) {
|
|
throw new RuntimeException("Y-plane buffer size too small.");
|
|
}
|
|
if (dataU.capacity() < strideU * chromaHeight) {
|
|
throw new RuntimeException("U-plane buffer size too small.");
|
|
}
|
|
if (dataV.capacity() < strideV * chromaHeight) {
|
|
throw new RuntimeException("V-plane buffer size too small.");
|
|
}
|
|
nativeFillBuffer(
|
|
nativeEncoder, bufferIndex, dataY, strideY, dataU, strideU, dataV, strideV);
|
|
i420Buffer.release();
|
|
// I420 consists of one full-resolution and two half-resolution planes.
|
|
// 1 + 1 / 4 + 1 / 4 = 3 / 2
|
|
int yuvSize = width * height * 3 / 2;
|
|
mediaCodec.queueInputBuffer(bufferIndex, 0, yuvSize, presentationTimestampUs, 0);
|
|
}
|
|
return true;
|
|
} catch (RuntimeException e) {
|
|
Logging.e(TAG, "encodeFrame failed", e);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void release() {
|
|
Logging.d(TAG, "Java releaseEncoder");
|
|
checkOnMediaCodecThread();
|
|
|
|
class CaughtException {
|
|
Exception e;
|
|
}
|
|
final CaughtException caughtException = new CaughtException();
|
|
boolean stopHung = false;
|
|
|
|
if (mediaCodec != null) {
|
|
// Run Mediacodec stop() and release() on separate thread since sometime
|
|
// Mediacodec.stop() may hang.
|
|
final CountDownLatch releaseDone = new CountDownLatch(1);
|
|
|
|
Runnable runMediaCodecRelease = new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
Logging.d(TAG, "Java releaseEncoder on release thread");
|
|
try {
|
|
mediaCodec.stop();
|
|
} catch (Exception e) {
|
|
Logging.e(TAG, "Media encoder stop failed", e);
|
|
}
|
|
try {
|
|
mediaCodec.release();
|
|
} catch (Exception e) {
|
|
Logging.e(TAG, "Media encoder release failed", e);
|
|
caughtException.e = e;
|
|
}
|
|
Logging.d(TAG, "Java releaseEncoder on release thread done");
|
|
|
|
releaseDone.countDown();
|
|
}
|
|
};
|
|
new Thread(runMediaCodecRelease).start();
|
|
|
|
if (!ThreadUtils.awaitUninterruptibly(releaseDone, MEDIA_CODEC_RELEASE_TIMEOUT_MS)) {
|
|
Logging.e(TAG, "Media encoder release timeout");
|
|
stopHung = true;
|
|
}
|
|
|
|
mediaCodec = null;
|
|
}
|
|
|
|
mediaCodecThread = null;
|
|
if (drawer != null) {
|
|
drawer.release();
|
|
drawer = null;
|
|
}
|
|
if (eglBase != null) {
|
|
eglBase.release();
|
|
eglBase = null;
|
|
}
|
|
if (inputSurface != null) {
|
|
inputSurface.release();
|
|
inputSurface = null;
|
|
}
|
|
runningInstance = null;
|
|
|
|
if (stopHung) {
|
|
codecErrors++;
|
|
if (errorCallback != null) {
|
|
Logging.e(TAG, "Invoke codec error callback. Errors: " + codecErrors);
|
|
errorCallback.onMediaCodecVideoEncoderCriticalError(codecErrors);
|
|
}
|
|
throw new RuntimeException("Media encoder release timeout.");
|
|
}
|
|
|
|
// Re-throw any runtime exception caught inside the other thread. Since this is an invoke, add
|
|
// stack trace for the waiting thread as well.
|
|
if (caughtException.e != null) {
|
|
final RuntimeException runtimeException = new RuntimeException(caughtException.e);
|
|
runtimeException.setStackTrace(ThreadUtils.concatStackTraces(
|
|
caughtException.e.getStackTrace(), runtimeException.getStackTrace()));
|
|
throw runtimeException;
|
|
}
|
|
|
|
Logging.d(TAG, "Java releaseEncoder done");
|
|
}
|
|
|
|
private boolean setRates(int kbps, int frameRate) {
|
|
checkOnMediaCodecThread();
|
|
|
|
int codecBitrateBps = 1000 * kbps;
|
|
if (bitrateAdjustmentType == BitrateAdjustmentType.DYNAMIC_ADJUSTMENT) {
|
|
bitrateAccumulatorMax = codecBitrateBps / 8.0;
|
|
if (targetBitrateBps > 0 && codecBitrateBps < targetBitrateBps) {
|
|
// Rescale the accumulator level if the accumulator max decreases
|
|
bitrateAccumulator = bitrateAccumulator * codecBitrateBps / targetBitrateBps;
|
|
}
|
|
}
|
|
targetBitrateBps = codecBitrateBps;
|
|
targetFps = frameRate;
|
|
|
|
// Adjust actual encoder bitrate based on bitrate adjustment type.
|
|
if (bitrateAdjustmentType == BitrateAdjustmentType.FRAMERATE_ADJUSTMENT && targetFps > 0) {
|
|
codecBitrateBps = BITRATE_ADJUSTMENT_FPS * targetBitrateBps / targetFps;
|
|
Logging.v(TAG,
|
|
"setRates: " + kbps + " -> " + (codecBitrateBps / 1000) + " kbps. Fps: " + targetFps);
|
|
} else if (bitrateAdjustmentType == BitrateAdjustmentType.DYNAMIC_ADJUSTMENT) {
|
|
Logging.v(TAG, "setRates: " + kbps + " kbps. Fps: " + targetFps + ". ExpScale: "
|
|
+ bitrateAdjustmentScaleExp);
|
|
if (bitrateAdjustmentScaleExp != 0) {
|
|
codecBitrateBps = (int) (codecBitrateBps * getBitrateScale(bitrateAdjustmentScaleExp));
|
|
}
|
|
} else {
|
|
Logging.v(TAG, "setRates: " + kbps + " kbps. Fps: " + targetFps);
|
|
}
|
|
|
|
try {
|
|
Bundle params = new Bundle();
|
|
params.putInt(MediaCodec.PARAMETER_KEY_VIDEO_BITRATE, codecBitrateBps);
|
|
mediaCodec.setParameters(params);
|
|
return true;
|
|
} catch (IllegalStateException e) {
|
|
Logging.e(TAG, "setRates failed", e);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Dequeue an input buffer and return its index, -1 if no input buffer is
|
|
// available, or -2 if the codec is no longer operative.
|
|
int dequeueInputBuffer() {
|
|
checkOnMediaCodecThread();
|
|
try {
|
|
return mediaCodec.dequeueInputBuffer(DEQUEUE_TIMEOUT);
|
|
} catch (IllegalStateException e) {
|
|
Logging.e(TAG, "dequeueIntputBuffer failed", e);
|
|
return -2;
|
|
}
|
|
}
|
|
|
|
// Helper struct for dequeueOutputBuffer() below.
|
|
static class OutputBufferInfo {
|
|
public OutputBufferInfo(
|
|
int index, ByteBuffer buffer, boolean isKeyFrame, long presentationTimestampUs) {
|
|
this.index = index;
|
|
this.buffer = buffer;
|
|
this.isKeyFrame = isKeyFrame;
|
|
this.presentationTimestampUs = presentationTimestampUs;
|
|
}
|
|
|
|
public final int index;
|
|
public final ByteBuffer buffer;
|
|
public final boolean isKeyFrame;
|
|
public final long presentationTimestampUs;
|
|
}
|
|
|
|
// Dequeue and return an output buffer, or null if no output is ready. Return
|
|
// a fake OutputBufferInfo with index -1 if the codec is no longer operable.
|
|
OutputBufferInfo dequeueOutputBuffer() {
|
|
checkOnMediaCodecThread();
|
|
try {
|
|
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
|
|
int result = mediaCodec.dequeueOutputBuffer(info, DEQUEUE_TIMEOUT);
|
|
// Check if this is config frame and save configuration data.
|
|
if (result >= 0) {
|
|
boolean isConfigFrame = (info.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0;
|
|
if (isConfigFrame) {
|
|
Logging.d(TAG, "Config frame generated. Offset: " + info.offset + ". Size: " + info.size);
|
|
configData = ByteBuffer.allocateDirect(info.size);
|
|
outputBuffers[result].position(info.offset);
|
|
outputBuffers[result].limit(info.offset + info.size);
|
|
configData.put(outputBuffers[result]);
|
|
// Log few SPS header bytes to check profile and level.
|
|
String spsData = "";
|
|
for (int i = 0; i < (info.size < 8 ? info.size : 8); i++) {
|
|
spsData += Integer.toHexString(configData.get(i) & 0xff) + " ";
|
|
}
|
|
Logging.d(TAG, spsData);
|
|
// Release buffer back.
|
|
mediaCodec.releaseOutputBuffer(result, false);
|
|
// Query next output.
|
|
result = mediaCodec.dequeueOutputBuffer(info, DEQUEUE_TIMEOUT);
|
|
}
|
|
}
|
|
if (result >= 0) {
|
|
// MediaCodec doesn't care about Buffer position/remaining/etc so we can
|
|
// mess with them to get a slice and avoid having to pass extra
|
|
// (BufferInfo-related) parameters back to C++.
|
|
ByteBuffer outputBuffer = outputBuffers[result].duplicate();
|
|
outputBuffer.position(info.offset);
|
|
outputBuffer.limit(info.offset + info.size);
|
|
reportEncodedFrame(info.size);
|
|
|
|
// Check key frame flag.
|
|
boolean isKeyFrame = (info.flags & MediaCodec.BUFFER_FLAG_SYNC_FRAME) != 0;
|
|
if (isKeyFrame) {
|
|
Logging.d(TAG, "Sync frame generated");
|
|
}
|
|
if (isKeyFrame && type == VideoCodecType.VIDEO_CODEC_H264) {
|
|
Logging.d(TAG, "Appending config frame of size " + configData.capacity()
|
|
+ " to output buffer with offset " + info.offset + ", size " + info.size);
|
|
// For H.264 key frame append SPS and PPS NALs at the start
|
|
ByteBuffer keyFrameBuffer = ByteBuffer.allocateDirect(configData.capacity() + info.size);
|
|
configData.rewind();
|
|
keyFrameBuffer.put(configData);
|
|
keyFrameBuffer.put(outputBuffer);
|
|
keyFrameBuffer.position(0);
|
|
return new OutputBufferInfo(result, keyFrameBuffer, isKeyFrame, info.presentationTimeUs);
|
|
} else {
|
|
return new OutputBufferInfo(
|
|
result, outputBuffer.slice(), isKeyFrame, info.presentationTimeUs);
|
|
}
|
|
} else if (result == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
|
|
outputBuffers = mediaCodec.getOutputBuffers();
|
|
return dequeueOutputBuffer();
|
|
} else if (result == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
|
|
return dequeueOutputBuffer();
|
|
} else if (result == MediaCodec.INFO_TRY_AGAIN_LATER) {
|
|
return null;
|
|
}
|
|
throw new RuntimeException("dequeueOutputBuffer: " + result);
|
|
} catch (IllegalStateException e) {
|
|
Logging.e(TAG, "dequeueOutputBuffer failed", e);
|
|
return new OutputBufferInfo(-1, null, false, -1);
|
|
}
|
|
}
|
|
|
|
private double getBitrateScale(int bitrateAdjustmentScaleExp) {
|
|
return Math.pow(BITRATE_CORRECTION_MAX_SCALE,
|
|
(double) bitrateAdjustmentScaleExp / BITRATE_CORRECTION_STEPS);
|
|
}
|
|
|
|
private void reportEncodedFrame(int size) {
|
|
if (targetFps == 0 || bitrateAdjustmentType != BitrateAdjustmentType.DYNAMIC_ADJUSTMENT) {
|
|
return;
|
|
}
|
|
|
|
// Accumulate the difference between actial and expected frame sizes.
|
|
double expectedBytesPerFrame = targetBitrateBps / (8.0 * targetFps);
|
|
bitrateAccumulator += (size - expectedBytesPerFrame);
|
|
bitrateObservationTimeMs += 1000.0 / targetFps;
|
|
|
|
// Put a cap on the accumulator, i.e., don't let it grow beyond some level to avoid
|
|
// using too old data for bitrate adjustment.
|
|
double bitrateAccumulatorCap = BITRATE_CORRECTION_SEC * bitrateAccumulatorMax;
|
|
bitrateAccumulator = Math.min(bitrateAccumulator, bitrateAccumulatorCap);
|
|
bitrateAccumulator = Math.max(bitrateAccumulator, -bitrateAccumulatorCap);
|
|
|
|
// Do bitrate adjustment every 3 seconds if actual encoder bitrate deviates too much
|
|
// form the target value.
|
|
if (bitrateObservationTimeMs > 1000 * BITRATE_CORRECTION_SEC) {
|
|
Logging.d(TAG, "Acc: " + (int) bitrateAccumulator + ". Max: " + (int) bitrateAccumulatorMax
|
|
+ ". ExpScale: " + bitrateAdjustmentScaleExp);
|
|
boolean bitrateAdjustmentScaleChanged = false;
|
|
if (bitrateAccumulator > bitrateAccumulatorMax) {
|
|
// Encoder generates too high bitrate - need to reduce the scale.
|
|
int bitrateAdjustmentInc = (int) (bitrateAccumulator / bitrateAccumulatorMax + 0.5);
|
|
bitrateAdjustmentScaleExp -= bitrateAdjustmentInc;
|
|
bitrateAccumulator = bitrateAccumulatorMax;
|
|
bitrateAdjustmentScaleChanged = true;
|
|
} else if (bitrateAccumulator < -bitrateAccumulatorMax) {
|
|
// Encoder generates too low bitrate - need to increase the scale.
|
|
int bitrateAdjustmentInc = (int) (-bitrateAccumulator / bitrateAccumulatorMax + 0.5);
|
|
bitrateAdjustmentScaleExp += bitrateAdjustmentInc;
|
|
bitrateAccumulator = -bitrateAccumulatorMax;
|
|
bitrateAdjustmentScaleChanged = true;
|
|
}
|
|
if (bitrateAdjustmentScaleChanged) {
|
|
bitrateAdjustmentScaleExp = Math.min(bitrateAdjustmentScaleExp, BITRATE_CORRECTION_STEPS);
|
|
bitrateAdjustmentScaleExp = Math.max(bitrateAdjustmentScaleExp, -BITRATE_CORRECTION_STEPS);
|
|
Logging.d(TAG, "Adjusting bitrate scale to " + bitrateAdjustmentScaleExp + ". Value: "
|
|
+ getBitrateScale(bitrateAdjustmentScaleExp));
|
|
setRates(targetBitrateBps / 1000, targetFps);
|
|
}
|
|
bitrateObservationTimeMs = 0;
|
|
}
|
|
}
|
|
|
|
// Release a dequeued output buffer back to the codec for re-use. Return
|
|
// false if the codec is no longer operable.
|
|
boolean releaseOutputBuffer(int index) {
|
|
checkOnMediaCodecThread();
|
|
try {
|
|
mediaCodec.releaseOutputBuffer(index, false);
|
|
return true;
|
|
} catch (IllegalStateException e) {
|
|
Logging.e(TAG, "releaseOutputBuffer failed", e);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/** Fills an inputBuffer with the given index with data from the byte buffers. */
|
|
private static native void nativeFillBuffer(long nativeEncoder, int inputBuffer, ByteBuffer dataY,
|
|
int strideY, ByteBuffer dataU, int strideU, ByteBuffer dataV, int strideV);
|
|
}
|