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authorChristian Schneppe <christian@pix-art.de>2017-03-04 22:00:46 +0100
committerChristian Schneppe <christian@pix-art.de>2017-03-04 22:00:46 +0100
commit33f0f1561bb3e0bc23a49e5c84513d41849d2160 (patch)
treea17b0280a7f196911233bf7e2ed6155fd3b293c7 /libs/android-transcoder
parente1a7a2738dde13353885a01c9ec9fd0cc64f6fc3 (diff)
make video resolution configurable
Diffstat (limited to 'libs/android-transcoder')
-rw-r--r--libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/AndroidStandardFormatStrategy.java91
-rw-r--r--libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/format/MediaFormatStrategyPresets.java9
2 files changed, 100 insertions, 0 deletions
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
@@ -26,6 +26,15 @@ public class MediaFormatStrategyPresets {
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 &gt;=4.3 devices by Android CTS (if codec is available).
* Default bitrate is 8Mbps. {@link #createAndroid720pStrategy(int)} to specify bitrate.