From 33f0f1561bb3e0bc23a49e5c84513d41849d2160 Mon Sep 17 00:00:00 2001 From: Christian Schneppe Date: Sat, 4 Mar 2017 22:00:46 +0100 Subject: make video resolution configurable --- .../format/AndroidStandardFormatStrategy.java | 91 ++++++++++++++++++++++ .../format/MediaFormatStrategyPresets.java | 9 +++ 2 files changed, 100 insertions(+) create mode 100644 libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/AndroidStandardFormatStrategy.java (limited to 'libs/android-transcoder') diff --git a/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/AndroidStandardFormatStrategy.java b/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/AndroidStandardFormatStrategy.java new file mode 100644 index 000000000..a6bf40b9c --- /dev/null +++ b/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/AndroidStandardFormatStrategy.java @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2014 Yuya Tanaka + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package net.ypresto.androidtranscoder.format; + +import android.media.MediaCodecInfo; +import android.media.MediaFormat; +import android.util.Log; + +class AndroidStandardFormatStrategy implements MediaFormatStrategy { + public static final int AUDIO_BITRATE_AS_IS = -1; + public static final int AUDIO_CHANNELS_AS_IS = -1; + private static final String TAG = "StandardCompression"; + private static final int DEFAULT_VIDEO_BITRATE = 2000 * 1000; + private static int LONGER_LENGTH = 1280; + private static int SHORTER_LENGTH = 720; + private final int mVideoBitrate; + private final int mVideoresolution; + private final int mAudioBitrate; + private final int mAudioChannels; + private float ASPECT_RATIO = LONGER_LENGTH / SHORTER_LENGTH; + + public AndroidStandardFormatStrategy() { + this(DEFAULT_VIDEO_BITRATE, SHORTER_LENGTH); + } + + public AndroidStandardFormatStrategy(int videoBitrate, int SHORTER_LENGTH) { + this(videoBitrate, SHORTER_LENGTH, AUDIO_BITRATE_AS_IS, AUDIO_CHANNELS_AS_IS); + } + + public AndroidStandardFormatStrategy(int videoBitrate, int SHORTER_LENGTH, int audioBitrate, int audioChannels) { + mVideoBitrate = videoBitrate; + mVideoresolution = SHORTER_LENGTH; + mAudioBitrate = audioBitrate; + mAudioChannels = audioChannels; + } + + @Override + public MediaFormat createVideoOutputFormat(MediaFormat inputFormat) { + int width = inputFormat.getInteger(MediaFormat.KEY_WIDTH); + int height = inputFormat.getInteger(MediaFormat.KEY_HEIGHT); + ASPECT_RATIO = (float) width / height; + Log.d(TAG, "Input video (" + width + "x" + height + " ratio: " + ASPECT_RATIO); + int shorter, outWidth, outHeight; + if (width >= height) { + shorter = height; + outWidth = Math.round(mVideoresolution * ASPECT_RATIO); + outHeight = mVideoresolution; + } else { + shorter = width; + outWidth = mVideoresolution; + outHeight = Math.round(mVideoresolution * ASPECT_RATIO); + } + if (shorter < mVideoresolution) { + Log.d(TAG, "This video is less to " + mVideoresolution + "p, pass-through. (" + width + "x" + height + ")"); + return null; + } + Log.d(TAG, "Converting video (" + outWidth + "x" + outHeight + " ratio: " + ASPECT_RATIO + ")"); + MediaFormat format = MediaFormat.createVideoFormat("video/avc", outWidth, outHeight); + format.setInteger(MediaFormat.KEY_BIT_RATE, mVideoBitrate); + format.setInteger(MediaFormat.KEY_FRAME_RATE, 30); + format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 3); + format.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface); + return format; + } + + @Override + public MediaFormat createAudioOutputFormat(MediaFormat inputFormat) { + if (mAudioBitrate == AUDIO_BITRATE_AS_IS || mAudioChannels == AUDIO_CHANNELS_AS_IS) + return null; + + // Use original sample rate, as resampling is not supported yet. + final MediaFormat format = MediaFormat.createAudioFormat(MediaFormatExtraConstants.MIMETYPE_AUDIO_AAC, + inputFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE), mAudioChannels); + format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC); + format.setInteger(MediaFormat.KEY_BIT_RATE, mAudioBitrate); + return format; + } +} diff --git a/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/MediaFormatStrategyPresets.java b/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/MediaFormatStrategyPresets.java index 30802586b..8bf02c181 100644 --- a/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/MediaFormatStrategyPresets.java +++ b/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/MediaFormatStrategyPresets.java @@ -25,6 +25,15 @@ public class MediaFormatStrategyPresets { @Deprecated public static final MediaFormatStrategy EXPORT_PRESET_960x540 = new ExportPreset960x540Strategy(); + /** + * Standard preset + * + * @param bitrate Preferred bitrate for video encoding. + */ + public static MediaFormatStrategy createAndroidStandardStrategy(int bitrate, int resolution) { + return new AndroidStandardFormatStrategy(bitrate, resolution); + } + /** * Preset based on Nexus 4 camera recording with 720p quality. * This preset is ensured to work on any Android >=4.3 devices by Android CTS (if codec is available). -- cgit v1.2.3