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Diffstat (limited to 'qcom/fmradio/FmConfig.java')
| -rw-r--r-- | qcom/fmradio/FmConfig.java | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/qcom/fmradio/FmConfig.java b/qcom/fmradio/FmConfig.java new file mode 100644 index 0000000..3044cc2 --- /dev/null +++ b/qcom/fmradio/FmConfig.java @@ -0,0 +1,180 @@ +/* + * Copyright (c) 2009-2011, The Linux Foundation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of The Linux Foundation nor + * the names of its contributors may be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +package qcom.fmradio; + +import android.util.Log; +import android.os.SystemProperties; + + +/** + * + * Class to be used when changing radio settings + * @hide + */ +public class FmConfig { + + /* V4l2 Controls */ + private static final int V4L2_CID_PRIVATE_BASE = 0x8000000; + private static final int V4L2_CID_PRIVATE_TAVARUA_REGION = V4L2_CID_PRIVATE_BASE + 7; + private static final int V4L2_CID_PRIVATE_TAVARUA_EMPHASIS = V4L2_CID_PRIVATE_BASE + 12; + private static final int V4L2_CID_PRIVATE_TAVARUA_RDS_STD = V4L2_CID_PRIVATE_BASE + 13; + private static final int V4L2_CID_PRIVATE_TAVARUA_SPACING = V4L2_CID_PRIVATE_BASE + 14; + private static final int V4L2_CID_PRIVATE_TAVARUA_SRCH_ALGORITHM = V4L2_CID_PRIVATE_BASE + 0x2B; + + private static final String TAG = "FmConfig"; + + + + private int mRadioBand; + /** + * FM pre-emphasis/de-emphasis + * + * Possible Values: + * + * FmTransceiver.FM_DE_EMP75, + * FmTransceiver.FM_DE_EMP50 + */ + private int mEmphasis; + /** + * Channel spacing + * + * Possible Values: + * + * FmTransceiver.FM_CHSPACE_200_KHZ, + * FmTransceiver.FM_CHSPACE_100_KHZ, + * FmTransceiver.FM_CHSPACE_50_KHZ + */ + private int mChSpacing; + /** + * RDS standard type + * + * Possible Values: + * + * FmTransceiver.FM_RDS_STD_RBDS, + * FmTransceiver.FM_RDS_STD_RDS, + * FmTransceiver.FM_RDS_STD_NONE + */ + private int mRdsStd; + + /** + * FM Frequency Band Lower Limit in KHz + */ + private int mBandLowerLimit; + /** + * FM Frequency Band Upper Limit in KHz + */ + private int mBandUpperLimit; + + public int getRadioBand(){ + return mRadioBand; + } + + public void setRadioBand (int band){ + mRadioBand = band; + } + + public int getEmphasis(){ + return mEmphasis; + } + + public void setEmphasis (int emp){ + mEmphasis = emp; + } + + public int getChSpacing (){ + return mChSpacing; + } + + public void setChSpacing(int spacing) { + mChSpacing = spacing; + } + + public int getRdsStd () { + return mRdsStd; + } + + public void setRdsStd (int rdsStandard) { + mRdsStd = rdsStandard; + } + + public int getLowerLimit(){ + return mBandLowerLimit; + } + + public void setLowerLimit(int lowLimit){ + mBandLowerLimit = lowLimit; + } + + public int getUpperLimit(){ + return mBandUpperLimit; + } + + public void setUpperLimit(int upLimit){ + mBandUpperLimit = upLimit; + } + + /* + * fmConfigure() + * This method call v4l2 private controls to set regional settings for the + * FM core + */ + protected static boolean fmConfigure (final int fd, final FmConfig configSettings) { + + int re; + + Log.v (TAG, "In fmConfigure"); + re = FmReceiverJNI.setControlNative (fd, V4L2_CID_PRIVATE_TAVARUA_EMPHASIS, configSettings.getEmphasis()); + re = FmReceiverJNI.setControlNative (fd, V4L2_CID_PRIVATE_TAVARUA_RDS_STD, configSettings.getRdsStd() ); + re = FmReceiverJNI.setControlNative (fd, V4L2_CID_PRIVATE_TAVARUA_SPACING, configSettings.getChSpacing() ); + + boolean fmSrchAlg = SystemProperties.getBoolean("persist.fm.new.srch.algorithm",false); + if (fmSrchAlg) { + Log.v (TAG, "fmConfigure() : FM Srch Alg : NEW "); + re = FmReceiverJNI.setControlNative (fd, V4L2_CID_PRIVATE_TAVARUA_SRCH_ALGORITHM, 1); + } + else { + Log.v (TAG, "fmConfigure() : FM Srch Alg : OLD "); + re = FmReceiverJNI.setControlNative (fd, V4L2_CID_PRIVATE_TAVARUA_SRCH_ALGORITHM, 0); + } + if (re < 0) + return false; + + re = FmReceiverJNI.setBandNative (fd, configSettings.getLowerLimit(), configSettings.getUpperLimit()); + if (re < 0) + return false; + + re = FmReceiverJNI.setControlNative (fd, V4L2_CID_PRIVATE_TAVARUA_REGION, configSettings.mRadioBand); + /* setControlNative for V4L2_CID_PRIVATE_TAVARUA_REGION triggers the config change*/ + if (re < 0) + return false; + + return true; + } + +} |