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Diffstat (limited to '')
-rw-r--r-- | libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/Android720pFormatStrategy.java | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/Android720pFormatStrategy.java b/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/Android720pFormatStrategy.java new file mode 100644 index 000000000..dc59caa1d --- /dev/null +++ b/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/Android720pFormatStrategy.java @@ -0,0 +1,90 @@ +/* + * 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 Android720pFormatStrategy 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 = "720pFormatStrategy"; + private static final int LONGER_LENGTH = 1280; + private static final int SHORTER_LENGTH = 720; + private static final int DEFAULT_VIDEO_BITRATE = 8000 * 1000; // From Nexus 4 Camera in 720p + private final int mVideoBitrate; + private final int mAudioBitrate; + private final int mAudioChannels; + + public Android720pFormatStrategy() { + this(DEFAULT_VIDEO_BITRATE); + } + + public Android720pFormatStrategy(int videoBitrate) { + this(videoBitrate, AUDIO_BITRATE_AS_IS, AUDIO_CHANNELS_AS_IS); + } + + public Android720pFormatStrategy(int videoBitrate, int audioBitrate, int audioChannels) { + mVideoBitrate = videoBitrate; + mAudioBitrate = audioBitrate; + mAudioChannels = audioChannels; + } + + @Override + public MediaFormat createVideoOutputFormat(MediaFormat inputFormat) { + int width = inputFormat.getInteger(MediaFormat.KEY_WIDTH); + int height = inputFormat.getInteger(MediaFormat.KEY_HEIGHT); + int longer, shorter, outWidth, outHeight; + if (width >= height) { + longer = width; + shorter = height; + outWidth = LONGER_LENGTH; + outHeight = SHORTER_LENGTH; + } else { + shorter = width; + longer = height; + outWidth = SHORTER_LENGTH; + outHeight = LONGER_LENGTH; + } + if (longer * 9 != shorter * 16) { + throw new OutputFormatUnavailableException("This video is not 16:9, and is not able to transcode. (" + width + "x" + height + ")"); + } + if (shorter <= SHORTER_LENGTH) { + Log.d(TAG, "This video is less or equal to 720p, pass-through. (" + width + "x" + height + ")"); + return null; + } + MediaFormat format = MediaFormat.createVideoFormat("video/avc", outWidth, outHeight); + // From Nexus 4 Camera in 720p + 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; + } +} |