Moving src/webrtc into src/.
In order to eliminate the WebRTC Subtree mirror in Chromium, WebRTC is moving the content of the src/webrtc directory up to the src/ directory. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38 Reviewed-on: https://webrtc-review.googlesource.com/1560 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19845}
This commit is contained in:
Mirko Bonadei
committed by
Commit Bot
Commit Bot
parent
6674846b4a
commit
bb547203bf
927
sdk/android/api/org/webrtc/MediaCodecVideoEncoder.java
Normal file
927
sdk/android/api/org/webrtc/MediaCodecVideoEncoder.java
Normal file
@ -0,0 +1,927 @@
|
||||
/*
|
||||
* 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);
|
||||
}
|
||||
Reference in New Issue
Block a user