| /* |
| * Copyright 2013 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| package org.webrtc; |
| |
| import android.annotation.TargetApi; |
| import android.graphics.Matrix; |
| import android.media.MediaCodec; |
| import android.media.MediaCodecInfo; |
| import android.media.MediaCodecInfo.CodecCapabilities; |
| import android.media.MediaCodecList; |
| import android.media.MediaFormat; |
| import android.opengl.GLES20; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.view.Surface; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| // Java-side of peerconnection_jni.cc:MediaCodecVideoEncoder. |
| // This class is an implementation detail of the Java PeerConnection API. |
| @TargetApi(19) |
| @SuppressWarnings("deprecation") |
| public class MediaCodecVideoEncoder { |
| // This class is constructed, operated, and destroyed by its C++ incarnation, |
| // so the class and its methods have non-public visibility. The API this |
| // class exposes aims to mimic the webrtc::VideoEncoder API as closely as |
| // possibly to minimize the amount of translation work necessary. |
| |
| private static final String TAG = "MediaCodecVideoEncoder"; |
| |
| // Tracks webrtc::VideoCodecType. |
| public enum VideoCodecType { VIDEO_CODEC_VP8, VIDEO_CODEC_VP9, VIDEO_CODEC_H264 } |
| |
| private static final int MEDIA_CODEC_RELEASE_TIMEOUT_MS = 5000; // Timeout for codec releasing. |
| private static final int DEQUEUE_TIMEOUT = 0; // Non-blocking, no wait. |
| private static final int BITRATE_ADJUSTMENT_FPS = 30; |
| private static final int MAXIMUM_INITIAL_FPS = 30; |
| private static final double BITRATE_CORRECTION_SEC = 3.0; |
| // Maximum bitrate correction scale - no more than 4 times. |
| private static final double BITRATE_CORRECTION_MAX_SCALE = 4; |
| // Amount of correction steps to reach correction maximum scale. |
| private static final int BITRATE_CORRECTION_STEPS = 20; |
| // Forced key frame interval - used to reduce color distortions on Qualcomm platform. |
| private static final long QCOM_VP8_KEY_FRAME_INTERVAL_ANDROID_L_MS = 15000; |
| private static final long QCOM_VP8_KEY_FRAME_INTERVAL_ANDROID_M_MS = 20000; |
| private static final long QCOM_VP8_KEY_FRAME_INTERVAL_ANDROID_N_MS = 15000; |
| |
| // Active running encoder instance. Set in initEncode() (called from native code) |
| // and reset to null in release() call. |
| private static MediaCodecVideoEncoder runningInstance = null; |
| private static MediaCodecVideoEncoderErrorCallback errorCallback = null; |
| private static int codecErrors = 0; |
| // List of disabled codec types - can be set from application. |
| private static Set<String> hwEncoderDisabledTypes = new HashSet<String>(); |
| |
| private Thread mediaCodecThread; |
| private MediaCodec mediaCodec; |
| private ByteBuffer[] outputBuffers; |
| private EglBase14 eglBase; |
| private int profile; |
| private int width; |
| private int height; |
| private Surface inputSurface; |
| private GlRectDrawer drawer; |
| |
| private static final String VP8_MIME_TYPE = "video/x-vnd.on2.vp8"; |
| private static final String VP9_MIME_TYPE = "video/x-vnd.on2.vp9"; |
| private static final String H264_MIME_TYPE = "video/avc"; |
| |
| private static final int VIDEO_AVCProfileHigh = 8; |
| private static final int VIDEO_AVCLevel3 = 0x100; |
| |
| // Type of bitrate adjustment for video encoder. |
| public enum BitrateAdjustmentType { |
| // No adjustment - video encoder has no known bitrate problem. |
| NO_ADJUSTMENT, |
| // Framerate based bitrate adjustment is required - HW encoder does not use frame |
| // timestamps to calculate frame bitrate budget and instead is relying on initial |
| // fps configuration assuming that all frames are coming at fixed initial frame rate. |
| FRAMERATE_ADJUSTMENT, |
| // Dynamic bitrate adjustment is required - HW encoder used frame timestamps, but actual |
| // bitrate deviates too much from the target value. |
| DYNAMIC_ADJUSTMENT |
| } |
| |
| // Should be in sync with webrtc::H264::Profile. |
| public static enum H264Profile { |
| CONSTRAINED_BASELINE(0), |
| BASELINE(1), |
| MAIN(2), |
| CONSTRAINED_HIGH(3), |
| HIGH(4); |
| |
| private final int value; |
| |
| H264Profile(int value) { |
| this.value = value; |
| } |
| |
| public int getValue() { |
| return value; |
| } |
| } |
| |
| // Class describing supported media codec properties. |
| private static class MediaCodecProperties { |
| public final String codecPrefix; |
| // Minimum Android SDK required for this codec to be used. |
| public final int minSdk; |
| // Flag if encoder implementation does not use frame timestamps to calculate frame bitrate |
| // budget and instead is relying on initial fps configuration assuming that all frames are |
| // coming at fixed initial frame rate. Bitrate adjustment is required for this case. |
| public final BitrateAdjustmentType bitrateAdjustmentType; |
| |
| MediaCodecProperties( |
| String codecPrefix, int minSdk, BitrateAdjustmentType bitrateAdjustmentType) { |
| this.codecPrefix = codecPrefix; |
| this.minSdk = minSdk; |
| this.bitrateAdjustmentType = bitrateAdjustmentType; |
| } |
| } |
| |
| // List of supported HW VP8 encoders. |
| private static final MediaCodecProperties qcomVp8HwProperties = new MediaCodecProperties( |
| "OMX.qcom.", Build.VERSION_CODES.KITKAT, BitrateAdjustmentType.NO_ADJUSTMENT); |
| private static final MediaCodecProperties exynosVp8HwProperties = new MediaCodecProperties( |
| "OMX.Exynos.", Build.VERSION_CODES.M, BitrateAdjustmentType.DYNAMIC_ADJUSTMENT); |
| private static final MediaCodecProperties intelVp8HwProperties = new MediaCodecProperties( |
| "OMX.Intel.", Build.VERSION_CODES.LOLLIPOP, BitrateAdjustmentType.NO_ADJUSTMENT); |
| private static MediaCodecProperties[] vp8HwList() { |
| final ArrayList<MediaCodecProperties> supported_codecs = new ArrayList<MediaCodecProperties>(); |
| supported_codecs.add(qcomVp8HwProperties); |
| supported_codecs.add(exynosVp8HwProperties); |
| if (PeerConnectionFactory.fieldTrialsFindFullName("WebRTC-IntelVP8").equals("Enabled")) { |
| supported_codecs.add(intelVp8HwProperties); |
| } |
| return supported_codecs.toArray(new MediaCodecProperties[supported_codecs.size()]); |
| } |
| |
| // List of supported HW VP9 encoders. |
| private static final MediaCodecProperties qcomVp9HwProperties = new MediaCodecProperties( |
| "OMX.qcom.", Build.VERSION_CODES.N, BitrateAdjustmentType.NO_ADJUSTMENT); |
| private static final MediaCodecProperties exynosVp9HwProperties = new MediaCodecProperties( |
| "OMX.Exynos.", Build.VERSION_CODES.N, BitrateAdjustmentType.FRAMERATE_ADJUSTMENT); |
| private static final MediaCodecProperties[] vp9HwList = |
| new MediaCodecProperties[] {qcomVp9HwProperties, exynosVp9HwProperties}; |
| |
| // List of supported HW H.264 encoders. |
| private static final MediaCodecProperties qcomH264HwProperties = new MediaCodecProperties( |
| "OMX.qcom.", Build.VERSION_CODES.KITKAT, BitrateAdjustmentType.NO_ADJUSTMENT); |
| private static final MediaCodecProperties exynosH264HwProperties = new MediaCodecProperties( |
| "OMX.Exynos.", Build.VERSION_CODES.LOLLIPOP, BitrateAdjustmentType.FRAMERATE_ADJUSTMENT); |
| private static final MediaCodecProperties[] h264HwList = |
| new MediaCodecProperties[] {qcomH264HwProperties, exynosH264HwProperties}; |
| |
| // List of supported HW H.264 high profile encoders. |
| private static final MediaCodecProperties exynosH264HighProfileHwProperties = |
| new MediaCodecProperties( |
| "OMX.Exynos.", Build.VERSION_CODES.M, BitrateAdjustmentType.FRAMERATE_ADJUSTMENT); |
| private static final MediaCodecProperties[] h264HighProfileHwList = |
| new MediaCodecProperties[] {exynosH264HighProfileHwProperties}; |
| |
| // List of devices with poor H.264 encoder quality. |
| // HW H.264 encoder on below devices has poor bitrate control - actual |
| // bitrates deviates a lot from the target value. |
| private static final String[] H264_HW_EXCEPTION_MODELS = |
| new String[] {"SAMSUNG-SGH-I337", "Nexus 7", "Nexus 4"}; |
| |
| // Bitrate modes - should be in sync with OMX_VIDEO_CONTROLRATETYPE defined |
| // in OMX_Video.h |
| private static final int VIDEO_ControlRateConstant = 2; |
| // NV12 color format supported by QCOM codec, but not declared in MediaCodec - |
| // see /hardware/qcom/media/mm-core/inc/OMX_QCOMExtns.h |
| private static final int COLOR_QCOM_FORMATYUV420PackedSemiPlanar32m = 0x7FA30C04; |
| // Allowable color formats supported by codec - in order of preference. |
| private static final int[] supportedColorList = {CodecCapabilities.COLOR_FormatYUV420Planar, |
| CodecCapabilities.COLOR_FormatYUV420SemiPlanar, |
| CodecCapabilities.COLOR_QCOM_FormatYUV420SemiPlanar, |
| COLOR_QCOM_FORMATYUV420PackedSemiPlanar32m}; |
| private static final int[] supportedSurfaceColorList = {CodecCapabilities.COLOR_FormatSurface}; |
| private VideoCodecType type; |
| private int colorFormat; // Used by native code. |
| |
| // Variables used for dynamic bitrate adjustment. |
| private BitrateAdjustmentType bitrateAdjustmentType = BitrateAdjustmentType.NO_ADJUSTMENT; |
| private double bitrateAccumulator; |
| private double bitrateAccumulatorMax; |
| private double bitrateObservationTimeMs; |
| private int bitrateAdjustmentScaleExp; |
| private int targetBitrateBps; |
| private int targetFps; |
| |
| // Interval in ms to force key frame generation. Used to reduce the time of color distortions |
| // happened sometime when using Qualcomm video encoder. |
| private long forcedKeyFrameMs; |
| private long lastKeyFrameMs; |
| |
| // SPS and PPS NALs (Config frame) for H.264. |
| private ByteBuffer configData = null; |
| |
| // MediaCodec error handler - invoked when critical error happens which may prevent |
| // further use of media codec API. Now it means that one of media codec instances |
| // is hanging and can no longer be used in the next call. |
| public static interface MediaCodecVideoEncoderErrorCallback { |
| void onMediaCodecVideoEncoderCriticalError(int codecErrors); |
| } |
| |
| public static void setErrorCallback(MediaCodecVideoEncoderErrorCallback errorCallback) { |
| Logging.d(TAG, "Set error callback"); |
| MediaCodecVideoEncoder.errorCallback = errorCallback; |
| } |
| |
| // Functions to disable HW encoding - can be called from applications for platforms |
| // which have known HW decoding problems. |
| public static void disableVp8HwCodec() { |
| Logging.w(TAG, "VP8 encoding is disabled by application."); |
| hwEncoderDisabledTypes.add(VP8_MIME_TYPE); |
| } |
| |
| public static void disableVp9HwCodec() { |
| Logging.w(TAG, "VP9 encoding is disabled by application."); |
| hwEncoderDisabledTypes.add(VP9_MIME_TYPE); |
| } |
| |
| public static void disableH264HwCodec() { |
| Logging.w(TAG, "H.264 encoding is disabled by application."); |
| hwEncoderDisabledTypes.add(H264_MIME_TYPE); |
| } |
| |
| // Functions to query if HW encoding is supported. |
| public static boolean isVp8HwSupported() { |
| return !hwEncoderDisabledTypes.contains(VP8_MIME_TYPE) |
| && (findHwEncoder(VP8_MIME_TYPE, vp8HwList(), supportedColorList) != null); |
| } |
| |
| public static EncoderProperties vp8HwEncoderProperties() { |
| if (hwEncoderDisabledTypes.contains(VP8_MIME_TYPE)) { |
| return null; |
| } else { |
| return findHwEncoder(VP8_MIME_TYPE, vp8HwList(), supportedColorList); |
| } |
| } |
| |
| public static boolean isVp9HwSupported() { |
| return !hwEncoderDisabledTypes.contains(VP9_MIME_TYPE) |
| && (findHwEncoder(VP9_MIME_TYPE, vp9HwList, supportedColorList) != null); |
| } |
| |
| public static boolean isH264HwSupported() { |
| return !hwEncoderDisabledTypes.contains(H264_MIME_TYPE) |
| && (findHwEncoder(H264_MIME_TYPE, h264HwList, supportedColorList) != null); |
| } |
| |
| public static boolean isH264HighProfileHwSupported() { |
| return !hwEncoderDisabledTypes.contains(H264_MIME_TYPE) |
| && (findHwEncoder(H264_MIME_TYPE, h264HighProfileHwList, supportedColorList) != null); |
| } |
| |
| public static boolean isVp8HwSupportedUsingTextures() { |
| return !hwEncoderDisabledTypes.contains(VP8_MIME_TYPE) |
| && (findHwEncoder(VP8_MIME_TYPE, vp8HwList(), supportedSurfaceColorList) != null); |
| } |
| |
| public static boolean isVp9HwSupportedUsingTextures() { |
| return !hwEncoderDisabledTypes.contains(VP9_MIME_TYPE) |
| && (findHwEncoder(VP9_MIME_TYPE, vp9HwList, supportedSurfaceColorList) != null); |
| } |
| |
| public static boolean isH264HwSupportedUsingTextures() { |
| return !hwEncoderDisabledTypes.contains(H264_MIME_TYPE) |
| && (findHwEncoder(H264_MIME_TYPE, h264HwList, supportedSurfaceColorList) != null); |
| } |
| |
| // Helper struct for findHwEncoder() below. |
| public static class EncoderProperties { |
| public EncoderProperties( |
| String codecName, int colorFormat, BitrateAdjustmentType bitrateAdjustmentType) { |
| this.codecName = codecName; |
| this.colorFormat = colorFormat; |
| this.bitrateAdjustmentType = bitrateAdjustmentType; |
| } |
| public final String codecName; // OpenMax component name for HW codec. |
| public final int colorFormat; // Color format supported by codec. |
| public final BitrateAdjustmentType bitrateAdjustmentType; // Bitrate adjustment type |
| } |
| |
| private static EncoderProperties findHwEncoder( |
| String mime, MediaCodecProperties[] supportedHwCodecProperties, int[] colorList) { |
| // MediaCodec.setParameters is missing for JB and below, so bitrate |
| // can not be adjusted dynamically. |
| if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { |
| return null; |
| } |
| |
| // Check if device is in H.264 exception list. |
| if (mime.equals(H264_MIME_TYPE)) { |
| List<String> exceptionModels = Arrays.asList(H264_HW_EXCEPTION_MODELS); |
| if (exceptionModels.contains(Build.MODEL)) { |
| Logging.w(TAG, "Model: " + Build.MODEL + " has black listed H.264 encoder."); |
| return null; |
| } |
| } |
| |
| for (int i = 0; i < MediaCodecList.getCodecCount(); ++i) { |
| MediaCodecInfo info = null; |
| try { |
| info = MediaCodecList.getCodecInfoAt(i); |
| } catch (IllegalArgumentException e) { |
| Logging.e(TAG, "Cannot retrieve encoder codec info", e); |
| } |
| if (info == null || !info.isEncoder()) { |
| continue; |
| } |
| String name = null; |
| for (String mimeType : info.getSupportedTypes()) { |
| if (mimeType.equals(mime)) { |
| name = info.getName(); |
| break; |
| } |
| } |
| if (name == null) { |
| continue; // No HW support in this codec; try the next one. |
| } |
| Logging.v(TAG, "Found candidate encoder " + name); |
| |
| // Check if this is supported HW encoder. |
| boolean supportedCodec = false; |
| BitrateAdjustmentType bitrateAdjustmentType = BitrateAdjustmentType.NO_ADJUSTMENT; |
| for (MediaCodecProperties codecProperties : supportedHwCodecProperties) { |
| if (name.startsWith(codecProperties.codecPrefix)) { |
| if (Build.VERSION.SDK_INT < codecProperties.minSdk) { |
| Logging.w( |
| TAG, "Codec " + name + " is disabled due to SDK version " + Build.VERSION.SDK_INT); |
| continue; |
| } |
| if (codecProperties.bitrateAdjustmentType != BitrateAdjustmentType.NO_ADJUSTMENT) { |
| bitrateAdjustmentType = codecProperties.bitrateAdjustmentType; |
| Logging.w( |
| TAG, "Codec " + name + " requires bitrate adjustment: " + bitrateAdjustmentType); |
| } |
| supportedCodec = true; |
| break; |
| } |
| } |
| if (!supportedCodec) { |
| continue; |
| } |
| |
| // Check if HW codec supports known color format. |
| CodecCapabilities capabilities; |
| try { |
| capabilities = info.getCapabilitiesForType(mime); |
| } catch (IllegalArgumentException e) { |
| Logging.e(TAG, "Cannot retrieve encoder capabilities", e); |
| continue; |
| } |
| for (int colorFormat : capabilities.colorFormats) { |
| Logging.v(TAG, " Color: 0x" + Integer.toHexString(colorFormat)); |
| } |
| |
| for (int supportedColorFormat : colorList) { |
| for (int codecColorFormat : capabilities.colorFormats) { |
| if (codecColorFormat == supportedColorFormat) { |
| // Found supported HW encoder. |
| Logging.d(TAG, "Found target encoder for mime " + mime + " : " + name + ". Color: 0x" |
| + Integer.toHexString(codecColorFormat) + ". Bitrate adjustment: " |
| + bitrateAdjustmentType); |
| return new EncoderProperties(name, codecColorFormat, bitrateAdjustmentType); |
| } |
| } |
| } |
| } |
| return null; // No HW encoder. |
| } |
| |
| private void checkOnMediaCodecThread() { |
| if (mediaCodecThread.getId() != Thread.currentThread().getId()) { |
| throw new RuntimeException("MediaCodecVideoEncoder previously operated on " + mediaCodecThread |
| + " but is now called on " + Thread.currentThread()); |
| } |
| } |
| |
| public static void printStackTrace() { |
| if (runningInstance != null && runningInstance.mediaCodecThread != null) { |
| StackTraceElement[] mediaCodecStackTraces = runningInstance.mediaCodecThread.getStackTrace(); |
| if (mediaCodecStackTraces.length > 0) { |
| Logging.d(TAG, "MediaCodecVideoEncoder stacks trace:"); |
| for (StackTraceElement stackTrace : mediaCodecStackTraces) { |
| Logging.d(TAG, stackTrace.toString()); |
| } |
| } |
| } |
| } |
| |
| static MediaCodec createByCodecName(String codecName) { |
| try { |
| // In the L-SDK this call can throw IOException so in order to work in |
| // both cases catch an exception. |
| return MediaCodec.createByCodecName(codecName); |
| } catch (Exception e) { |
| return null; |
| } |
| } |
| |
| boolean initEncode(VideoCodecType type, int profile, int width, int height, int kbps, int fps, |
| EglBase14.Context sharedContext) { |
| final boolean useSurface = sharedContext != null; |
| Logging.d(TAG, |
| "Java initEncode: " + type + ". Profile: " + profile + " : " + width + " x " + height |
| + ". @ " + kbps + " kbps. Fps: " + fps + ". Encode from texture : " + useSurface); |
| |
| this.profile = profile; |
| this.width = width; |
| this.height = height; |
| if (mediaCodecThread != null) { |
| throw new RuntimeException("Forgot to release()?"); |
| } |
| 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(); |
| nativeFillBuffer(nativeEncoder, bufferIndex, i420Buffer.getDataY(), i420Buffer.getStrideY(), |
| i420Buffer.getDataU(), i420Buffer.getStrideU(), i420Buffer.getDataV(), |
| i420Buffer.getStrideV()); |
| 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); |
| } |
