content: /*
   * 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, int 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();
      }
  }
  