diff options
Diffstat (limited to 'src/com/android/tv/tuner/exoplayer/buffer/DvrStorageManager.java')
| -rw-r--r-- | src/com/android/tv/tuner/exoplayer/buffer/DvrStorageManager.java | 209 |
1 files changed, 157 insertions, 52 deletions
diff --git a/src/com/android/tv/tuner/exoplayer/buffer/DvrStorageManager.java b/src/com/android/tv/tuner/exoplayer/buffer/DvrStorageManager.java index 6a0502a7..6a09016c 100644 --- a/src/com/android/tv/tuner/exoplayer/buffer/DvrStorageManager.java +++ b/src/com/android/tv/tuner/exoplayer/buffer/DvrStorageManager.java @@ -17,8 +17,12 @@ package com.android.tv.tuner.exoplayer.buffer; import android.media.MediaFormat; +import android.util.Log; import android.util.Pair; +import com.android.tv.tuner.data.nano.Track.AtscCaptionTrack; +import com.google.protobuf.nano.MessageNano; + import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.File; @@ -28,18 +32,25 @@ import java.io.IOException; import java.nio.ByteBuffer; import java.nio.charset.StandardCharsets; import java.util.ArrayList; +import java.util.List; +import java.util.Map; import java.util.SortedMap; /** * Manages DVR storage. */ public class DvrStorageManager implements BufferManager.StorageManager { + private static final String TAG = "DvrStorageManager"; // TODO: make serializable classes and use protobuf after internal data structure is finalized. private static final String KEY_PIXEL_WIDTH_HEIGHT_RATIO = "com.google.android.videos.pixelWidthHeightRatio"; + private static final String META_FILE_TYPE_AUDIO = "audio"; + private static final String META_FILE_TYPE_VIDEO = "video"; + private static final String META_FILE_TYPE_CAPTION = "caption"; private static final String META_FILE_SUFFIX = ".meta"; private static final String IDX_FILE_SUFFIX = ".idx"; + private static final String IDX_FILE_SUFFIX_V2 = IDX_FILE_SUFFIX + "2"; // Size of minimum reserved storage buffer which will be used to save meta files // and index files after actual recording finished. @@ -59,18 +70,6 @@ public class DvrStorageManager implements BufferManager.StorageManager { } @Override - public void clearStorage() { - if (mIsRecording) { - File[] files = mBufferDir.listFiles(); - if (files != null && files.length > 0) { - for (File file : files) { - file.delete(); - } - } - } - } - - @Override public File getBufferDir() { return mBufferDir; } @@ -132,6 +131,17 @@ public class DvrStorageManager implements BufferManager.StorageManager { } } + private void readFormatStringOptional(DataInputStream in, MediaFormat format, String key) { + try { + String str = readString(in); + if (str != null) { + format.setString(key, str); + } + } catch (IOException e) { + // Since we are reading optional field, ignore the exception. + } + } + private ByteBuffer readByteBuffer(DataInputStream in) throws IOException { int len = in.readInt(); if (len <= 0) { @@ -155,39 +165,104 @@ public class DvrStorageManager implements BufferManager.StorageManager { } @Override - public Pair<String, MediaFormat> readTrackInfoFile(boolean isAudio) throws IOException { - File file = new File(getBufferDir(), (isAudio ? "audio" : "video") + META_FILE_SUFFIX); - try (DataInputStream in = new DataInputStream(new FileInputStream(file))) { - String name = readString(in); - MediaFormat format = new MediaFormat(); - readFormatString(in, format, MediaFormat.KEY_MIME); - readFormatInt(in, format, MediaFormat.KEY_MAX_INPUT_SIZE); - readFormatInt(in, format, MediaFormat.KEY_WIDTH); - readFormatInt(in, format, MediaFormat.KEY_HEIGHT); - readFormatInt(in, format, MediaFormat.KEY_CHANNEL_COUNT); - readFormatInt(in, format, MediaFormat.KEY_SAMPLE_RATE); - readFormatFloat(in, format, KEY_PIXEL_WIDTH_HEIGHT_RATIO); - for (int i = 0; i < 3; ++i) { - readFormatByteBuffer(in, format, "csd-" + i); + public List<BufferManager.TrackFormat> readTrackInfoFiles(boolean isAudio) { + List<BufferManager.TrackFormat> trackFormatList = new ArrayList<>(); + int index = 0; + boolean trackNotFound = false; + do { + String fileName = (isAudio ? META_FILE_TYPE_AUDIO : META_FILE_TYPE_VIDEO) + + ((index == 0) ? META_FILE_SUFFIX : (index + META_FILE_SUFFIX)); + File file = new File(getBufferDir(), fileName); + try (DataInputStream in = new DataInputStream(new FileInputStream(file))) { + String name = readString(in); + MediaFormat format = new MediaFormat(); + readFormatString(in, format, MediaFormat.KEY_MIME); + readFormatInt(in, format, MediaFormat.KEY_MAX_INPUT_SIZE); + readFormatInt(in, format, MediaFormat.KEY_WIDTH); + readFormatInt(in, format, MediaFormat.KEY_HEIGHT); + readFormatInt(in, format, MediaFormat.KEY_CHANNEL_COUNT); + readFormatInt(in, format, MediaFormat.KEY_SAMPLE_RATE); + readFormatFloat(in, format, KEY_PIXEL_WIDTH_HEIGHT_RATIO); + for (int i = 0; i < 3; ++i) { + readFormatByteBuffer(in, format, "csd-" + i); + } + readFormatLong(in, format, MediaFormat.KEY_DURATION); + + // This is optional since language field is added later. + readFormatStringOptional(in, format, MediaFormat.KEY_LANGUAGE); + trackFormatList.add(new BufferManager.TrackFormat(name, format)); + } catch (IOException e) { + trackNotFound = true; } - readFormatLong(in, format, MediaFormat.KEY_DURATION); - return new Pair<>(name, format); + index++; + } while(!trackNotFound); + return trackFormatList; + } + + /** + * Reads caption information from files. + * + * @return a list of {@link AtscCaptionTrack} objects which store caption information. + */ + public List<AtscCaptionTrack> readCaptionInfoFiles() { + List<AtscCaptionTrack> tracks = new ArrayList<>(); + int index = 0; + boolean trackNotFound = false; + do { + String fileName = META_FILE_TYPE_CAPTION + + ((index == 0) ? META_FILE_SUFFIX : (index + META_FILE_SUFFIX)); + File file = new File(getBufferDir(), fileName); + try (DataInputStream in = new DataInputStream(new FileInputStream(file))) { + byte[] data = new byte[(int) file.length()]; + in.read(data); + tracks.add(AtscCaptionTrack.parseFrom(data)); + } catch (IOException e) { + trackNotFound = true; + } + index++; + } while(!trackNotFound); + return tracks; + } + + private ArrayList<BufferManager.PositionHolder> readOldIndexFile(File indexFile) + throws IOException { + ArrayList<BufferManager.PositionHolder> indices = new ArrayList<>(); + try (DataInputStream in = new DataInputStream(new FileInputStream(indexFile))) { + long count = in.readLong(); + for (long i = 0; i < count; ++i) { + long positionUs = in.readLong(); + indices.add(new BufferManager.PositionHolder(positionUs, positionUs, 0)); + } + return indices; } } - @Override - public ArrayList<Long> readIndexFile(String trackId) throws IOException { - ArrayList<Long> indices = new ArrayList<>(); - File file = new File(getBufferDir(), trackId + IDX_FILE_SUFFIX); - try (DataInputStream in = new DataInputStream(new FileInputStream(file))) { + private ArrayList<BufferManager.PositionHolder> readNewIndexFile(File indexFile) + throws IOException { + ArrayList<BufferManager.PositionHolder> indices = new ArrayList<>(); + try (DataInputStream in = new DataInputStream(new FileInputStream(indexFile))) { long count = in.readLong(); for (long i = 0; i < count; ++i) { - indices.add(in.readLong()); + long positionUs = in.readLong(); + long basePositionUs = in.readLong(); + int offset = in.readInt(); + indices.add(new BufferManager.PositionHolder(positionUs, basePositionUs, offset)); } return indices; } } + @Override + public ArrayList<BufferManager.PositionHolder> readIndexFile(String trackId) + throws IOException { + File file = new File(getBufferDir(), trackId + IDX_FILE_SUFFIX_V2); + if (file.exists()) { + return readNewIndexFile(file); + } else { + return readOldIndexFile(new File(getBufferDir(),trackId + IDX_FILE_SUFFIX)); + } + } + private void writeFormatInt(DataOutputStream out, MediaFormat format, String key) throws IOException { if (format.containsKey(key)) { @@ -254,33 +329,63 @@ public class DvrStorageManager implements BufferManager.StorageManager { } @Override - public void writeTrackInfoFile(String trackId, MediaFormat format, boolean isAudio) + public void writeTrackInfoFiles(List<BufferManager.TrackFormat> formatList, boolean isAudio) throws IOException { - File file = new File(getBufferDir(), (isAudio ? "audio" : "video") + META_FILE_SUFFIX); - try (DataOutputStream out = new DataOutputStream(new FileOutputStream(file))) { - writeString(out, trackId); - writeFormatString(out, format, MediaFormat.KEY_MIME); - writeFormatInt(out, format, MediaFormat.KEY_MAX_INPUT_SIZE); - writeFormatInt(out, format, MediaFormat.KEY_WIDTH); - writeFormatInt(out, format, MediaFormat.KEY_HEIGHT); - writeFormatInt(out, format, MediaFormat.KEY_CHANNEL_COUNT); - writeFormatInt(out, format, MediaFormat.KEY_SAMPLE_RATE); - writeFormatFloat(out, format, KEY_PIXEL_WIDTH_HEIGHT_RATIO); - for (int i = 0; i < 3; ++i) { - writeFormatByteBuffer(out, format, "csd-" + i); + for (int i = 0; i < formatList.size() ; ++i) { + BufferManager.TrackFormat trackFormat = formatList.get(i); + String fileName = (isAudio ? META_FILE_TYPE_AUDIO : META_FILE_TYPE_VIDEO) + + ((i == 0) ? META_FILE_SUFFIX : (i + META_FILE_SUFFIX)); + File file = new File(getBufferDir(), fileName); + try (DataOutputStream out = new DataOutputStream(new FileOutputStream(file))) { + writeString(out, trackFormat.trackId); + writeFormatString(out, trackFormat.format, MediaFormat.KEY_MIME); + writeFormatInt(out, trackFormat.format, MediaFormat.KEY_MAX_INPUT_SIZE); + writeFormatInt(out, trackFormat.format, MediaFormat.KEY_WIDTH); + writeFormatInt(out, trackFormat.format, MediaFormat.KEY_HEIGHT); + writeFormatInt(out, trackFormat.format, MediaFormat.KEY_CHANNEL_COUNT); + writeFormatInt(out, trackFormat.format, MediaFormat.KEY_SAMPLE_RATE); + writeFormatFloat(out, trackFormat.format, KEY_PIXEL_WIDTH_HEIGHT_RATIO); + for (int j = 0; j < 3; ++j) { + writeFormatByteBuffer(out, trackFormat.format, "csd-" + j); + } + writeFormatLong(out, trackFormat.format, MediaFormat.KEY_DURATION); + writeFormatString(out, trackFormat.format, MediaFormat.KEY_LANGUAGE); + } + } + } + + /** + * Writes caption information to files. + * + * @param tracks a list of {@link AtscCaptionTrack} objects which store caption information. + */ + public void writeCaptionInfoFiles(List<AtscCaptionTrack> tracks) { + if (tracks == null || tracks.isEmpty()) { + return; + } + for (int i = 0; i < tracks.size(); i++) { + AtscCaptionTrack track = tracks.get(i); + String fileName = META_FILE_TYPE_CAPTION + + ((i == 0) ? META_FILE_SUFFIX : (i + META_FILE_SUFFIX)); + File file = new File(getBufferDir(), fileName); + try (DataOutputStream out = new DataOutputStream(new FileOutputStream(file))) { + out.write(MessageNano.toByteArray(track)); + } catch (Exception e) { + Log.e(TAG, "Fail to write caption info to files", e); } - writeFormatLong(out, format, MediaFormat.KEY_DURATION); } } @Override - public void writeIndexFile(String trackName, SortedMap<Long, SampleChunk> index) + public void writeIndexFile(String trackName, SortedMap<Long, Pair<SampleChunk, Integer>> index) throws IOException { - File indexFile = new File(getBufferDir(), trackName + IDX_FILE_SUFFIX); + File indexFile = new File(getBufferDir(), trackName + IDX_FILE_SUFFIX_V2); try (DataOutputStream out = new DataOutputStream(new FileOutputStream(indexFile))) { out.writeLong(index.size()); - for (Long key : index.keySet()) { - out.writeLong(key); + for (Map.Entry<Long, Pair<SampleChunk, Integer>> entry : index.entrySet()) { + out.writeLong(entry.getKey()); + out.writeLong(entry.getValue().first.getStartPositionUs()); + out.writeInt(entry.getValue().second); } } } |