| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * 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 com.android.server.usb.descriptors; |
| |
| import com.android.server.usb.descriptors.report.ReportCanvas; |
| |
| /** |
| * @hide |
| * An audio class-specific Format I interface. |
| * see Frmts10.pdf section 2.2 |
| */ |
| public final class Usb10ASFormatI extends UsbASFormat { |
| private static final String TAG = "Usb10ASFormatI"; |
| |
| private byte mNumChannels; // 4:1 |
| private byte mSubframeSize; // 5:1 frame size in bytes |
| private byte mBitResolution; // 6:1 sample size in bits |
| private byte mSampleFreqType; // 7:1 |
| private int[] mSampleRates; // if mSamFreqType == 0, there will be 2 values: the |
| // min & max rates otherwise mSamFreqType rates. |
| // All 3-byte values. All rates in Hz |
| |
| public Usb10ASFormatI(int length, byte type, byte subtype, byte formatType, byte subclass) { |
| super(length, type, subtype, formatType, subclass); |
| } |
| |
| public byte getNumChannels() { |
| return mNumChannels; |
| } |
| |
| public byte getSubframeSize() { |
| return mSubframeSize; |
| } |
| |
| public byte getBitResolution() { |
| return mBitResolution; |
| } |
| |
| public byte getSampleFreqType() { |
| return mSampleFreqType; |
| } |
| |
| @Override |
| public int[] getSampleRates() { |
| return mSampleRates; |
| } |
| |
| @Override |
| public int[] getBitDepths() { |
| int[] depths = {mBitResolution}; |
| return depths; |
| } |
| |
| @Override |
| public int[] getChannelCounts() { |
| int[] counts = {mNumChannels}; |
| return counts; |
| } |
| |
| @Override |
| public int parseRawDescriptors(ByteStream stream) { |
| mNumChannels = stream.getByte(); |
| mSubframeSize = stream.getByte(); |
| mBitResolution = stream.getByte(); |
| mSampleFreqType = stream.getByte(); |
| if (mSampleFreqType == 0) { |
| mSampleRates = new int[2]; |
| mSampleRates[0] = stream.unpackUsbTriple(); |
| mSampleRates[1] = stream.unpackUsbTriple(); |
| } else { |
| mSampleRates = new int[mSampleFreqType]; |
| for (int index = 0; index < mSampleFreqType; index++) { |
| mSampleRates[index] = stream.unpackUsbTriple(); |
| } |
| } |
| |
| return mLength; |
| } |
| |
| @Override |
| public void report(ReportCanvas canvas) { |
| super.report(canvas); |
| |
| canvas.openList(); |
| canvas.writeListItem("" + getNumChannels() + " Channels."); |
| canvas.writeListItem("Subframe Size: " + getSubframeSize()); |
| canvas.writeListItem("Bit Resolution: " + getBitResolution()); |
| byte sampleFreqType = getSampleFreqType(); |
| int[] sampleRates = getSampleRates(); |
| canvas.writeListItem("Sample Freq Type: " + sampleFreqType); |
| canvas.openList(); |
| if (sampleFreqType == 0) { |
| canvas.writeListItem("min: " + sampleRates[0]); |
| canvas.writeListItem("max: " + sampleRates[1]); |
| } else { |
| for (int index = 0; index < sampleFreqType; index++) { |
| canvas.writeListItem("" + sampleRates[index]); |
| } |
| } |
| canvas.closeList(); |
| canvas.closeList(); |
| } |
| } |