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Add video processing supports for Android
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112 changes: 112 additions & 0 deletions
112
Android/app/src/main/java/github/tianzerl/anime4kcpp/VideoAudioProcessor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| package github.tianzerl.anime4kcpp; | ||
|
|
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| import android.media.MediaCodec; | ||
| import android.media.MediaExtractor; | ||
| import android.media.MediaFormat; | ||
| import android.media.MediaMuxer; | ||
| import android.util.Log; | ||
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| import androidx.annotation.NonNull; | ||
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|
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| import java.io.IOException; | ||
| import java.nio.ByteBuffer; | ||
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| class VideoAudioProcessor { | ||
| private String src; | ||
| private String tmp; | ||
| private String dst; | ||
|
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| VideoAudioProcessor(@NonNull String srcPath, @NonNull String tmpPath, @NonNull String dstPath) { | ||
| src = srcPath; | ||
| tmp = tmpPath; | ||
| dst = dstPath; | ||
| } | ||
|
|
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| void merge() throws IOException { | ||
| MediaExtractor srcVideoExtractor = new MediaExtractor(); | ||
| MediaExtractor tmpVideoExtractor = new MediaExtractor(); | ||
| MediaMuxer dstVideoMuxer = new MediaMuxer(dst,MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4); | ||
| srcVideoExtractor.setDataSource(src); | ||
| tmpVideoExtractor.setDataSource(tmp); | ||
| int srcTrackCount = srcVideoExtractor.getTrackCount(); | ||
| int srcAudioTrackIndex = -1; | ||
| int dstAudioTrackIndex = -1; | ||
| int dstVideoTrackIndex; | ||
| int dstAudioMaxInputSize = -1; | ||
| int tmpVideoMaxInputSize; | ||
| //Find src audio track; | ||
| for (int i = 0; i < srcTrackCount; i++) | ||
| { | ||
| MediaFormat mimeFormat = srcVideoExtractor.getTrackFormat(i); | ||
| String mimeType = mimeFormat.getString(MediaFormat.KEY_MIME); | ||
| assert mimeType != null; | ||
| Log.d("MediaType",mimeType); | ||
| if(mimeType.startsWith(MediaFormat.MIMETYPE_AUDIO_AAC)) | ||
| { | ||
| srcAudioTrackIndex = i; | ||
| dstAudioTrackIndex = dstVideoMuxer.addTrack(mimeFormat); | ||
| dstAudioMaxInputSize = mimeFormat.getInteger(MediaFormat.KEY_MAX_INPUT_SIZE); | ||
| } | ||
| } | ||
|
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| if(srcAudioTrackIndex == -1) | ||
| { | ||
| throw new IOException("Only supports to merge aac audio track"); | ||
| } | ||
|
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| //tmp video track; | ||
| { | ||
| MediaFormat mimeFormat = tmpVideoExtractor.getTrackFormat(0); | ||
| dstVideoTrackIndex = dstVideoMuxer.addTrack(mimeFormat); | ||
| tmpVideoMaxInputSize = mimeFormat.getInteger(MediaFormat.KEY_MAX_INPUT_SIZE); | ||
| } | ||
|
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| dstVideoMuxer.start(); | ||
|
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| srcVideoExtractor.selectTrack(srcAudioTrackIndex); | ||
| MediaCodec.BufferInfo srcAudioBufferInfo = new MediaCodec.BufferInfo(); | ||
| ByteBuffer srcAudioBuffer = ByteBuffer.allocate(dstAudioMaxInputSize); | ||
| while (true) | ||
| { | ||
| int readSampleSize = srcVideoExtractor.readSampleData(srcAudioBuffer,0); | ||
| if (readSampleSize < 0) | ||
| { | ||
| srcVideoExtractor.unselectTrack(srcAudioTrackIndex); | ||
| break; | ||
| } | ||
|
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| srcAudioBufferInfo.size = readSampleSize; | ||
| srcAudioBufferInfo.offset = 0; | ||
| srcAudioBufferInfo.flags = srcVideoExtractor.getSampleFlags(); | ||
| srcAudioBufferInfo.presentationTimeUs = srcVideoExtractor.getSampleTime(); | ||
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| dstVideoMuxer.writeSampleData(dstAudioTrackIndex,srcAudioBuffer,srcAudioBufferInfo); | ||
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| srcVideoExtractor.advance(); | ||
| } | ||
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| tmpVideoExtractor.selectTrack(0); | ||
| MediaCodec.BufferInfo tmpVideoBufferInfo = new MediaCodec.BufferInfo(); | ||
| ByteBuffer tmpVideoBuffer = ByteBuffer.allocate(tmpVideoMaxInputSize); | ||
| while (true) | ||
| { | ||
| int readSampleSize = tmpVideoExtractor.readSampleData(tmpVideoBuffer,0); | ||
| if (readSampleSize < 0) | ||
| { | ||
| tmpVideoExtractor.unselectTrack(0); | ||
| break; | ||
| } | ||
|
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| tmpVideoBufferInfo.size = readSampleSize; | ||
| tmpVideoBufferInfo.offset = 0; | ||
| tmpVideoBufferInfo.flags = tmpVideoExtractor.getSampleFlags(); | ||
| tmpVideoBufferInfo.presentationTimeUs = tmpVideoExtractor.getSampleTime(); | ||
|
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| dstVideoMuxer.writeSampleData(dstVideoTrackIndex, tmpVideoBuffer,tmpVideoBufferInfo); | ||
| tmpVideoExtractor.advance(); | ||
| } | ||
|
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| dstVideoMuxer.stop(); | ||
| dstVideoMuxer.release(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,4 @@ | ||
| <?xml version="1.0" encoding="utf-8"?> | ||
| <resources> | ||
| <color name="ic_launcher_background">#FFFFFF</color> | ||
| </resources> | ||
| </resources> |
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