Android Bluetooth SampleRate 변경

Android : 2019. 1. 8. 09:17
packages/apps/Settings/src/com/android/settings/development/DevelopmentSettings.java

2023    private void writeBluetoothConfigurationOption(Preference preference,
2024                                                   Object newValue) {
2025        String[] summaries;
2026        int index;
2027        int codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_INVALID;
2028        int codecPriorityValue = BluetoothCodecConfig.CODEC_PRIORITY_DEFAULT;
2029        int sampleRateValue = BluetoothCodecConfig.SAMPLE_RATE_NONE;
2030        int bitsPerSampleValue = BluetoothCodecConfig.BITS_PER_SAMPLE_NONE;
2031        int channelModeValue = BluetoothCodecConfig.CHANNEL_MODE_NONE;
2032        long codecSpecific1Value = 0;
2033        long codecSpecific2Value = 0;
2034        long codecSpecific3Value = 0;
2035        long codecSpecific4Value = 0;
2036
2037        // Codec Type
2038        String codecType = mBluetoothSelectA2dpCodec.getValue();
2039        if (preference == mBluetoothSelectA2dpCodec) {
2040            codecType = newValue.toString();
2041            index = mBluetoothSelectA2dpCodec.findIndexOfValue(newValue.toString());
2042            if (index >= 0) {
2043                summaries = getResources().getStringArray(R.array.bluetooth_a2dp_codec_summaries);
2044                mBluetoothSelectA2dpCodec.setSummary(summaries[index]);
2045            }
2046        }
2047        index = mBluetoothSelectA2dpCodec.findIndexOfValue(codecType);
2048        switch (index) {
2049        case 0:
2050            // Reset the priority of the current codec to default
2051            String oldValue = mBluetoothSelectA2dpCodec.getValue();
2052            switch (mBluetoothSelectA2dpCodec.findIndexOfValue(oldValue)) {
2053            case 0:
2054                break;      // No current codec
2055            case 1:
2056                codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_SBC;
2057                break;
2058            case 2:
2059                codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_AAC;
2060                break;
2061            case 3:
2062                codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_APTX;
2063                break;
2064            case 4:
2065                codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_APTX_HD;
2066                break;
2067            case 5:
2068                codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_LDAC;
2069                break;
2070            default:
2071                break;
2072            }
2073            break;
2074        case 1:
2075            codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_SBC;
2076            codecPriorityValue = BluetoothCodecConfig.CODEC_PRIORITY_HIGHEST;
2077            break;
2078        case 2:
2079            codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_AAC;
2080            codecPriorityValue = BluetoothCodecConfig.CODEC_PRIORITY_HIGHEST;
2081            break;
2082        case 3:
2083            codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_APTX;
2084            codecPriorityValue = BluetoothCodecConfig.CODEC_PRIORITY_HIGHEST;
2085            break;
2086        case 4:
2087            codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_APTX_HD;
2088            codecPriorityValue = BluetoothCodecConfig.CODEC_PRIORITY_HIGHEST;
2089            break;
2090        case 5:
2091            codecTypeValue = BluetoothCodecConfig.SOURCE_CODEC_TYPE_LDAC;
2092            codecPriorityValue = BluetoothCodecConfig.CODEC_PRIORITY_HIGHEST;
2093            break;
2094        case 6:
2095        synchronized (mBluetoothA2dpLock) {
2096            if (mBluetoothA2dp != null) {
2097                mBluetoothA2dp.enableOptionalCodecs();
2098            }
2099        }
2100        return;
2101        case 7:
2102        synchronized (mBluetoothA2dpLock) {
2103            if (mBluetoothA2dp != null) {
2104                mBluetoothA2dp.disableOptionalCodecs();
2105            }
2106        }
2107        return;
2108        default:
2109            break;
2110        }
2111
2112        // Sample Rate
2113        String sampleRate = mBluetoothSelectA2dpSampleRate.getValue();
2114        if (preference == mBluetoothSelectA2dpSampleRate) {
2115            sampleRate = newValue.toString();
2116            index = mBluetoothSelectA2dpSampleRate.findIndexOfValue(newValue.toString());
2117            if (index >= 0) {
2118                summaries = getResources().getStringArray(R.array.bluetooth_a2dp_codec_sample_rate_summaries);
2119                mBluetoothSelectA2dpSampleRate.setSummary(summaries[index]);
2120            }
2121        }
2122        index = mBluetoothSelectA2dpSampleRate.findIndexOfValue(sampleRate);
2123        switch (index) {
2124        case 0:
2125            // Reset to default
2126            break;
2127        case 1:
2128            sampleRateValue = BluetoothCodecConfig.SAMPLE_RATE_44100;
2129            break;
2130        case 2:
2131            sampleRateValue = BluetoothCodecConfig.SAMPLE_RATE_48000;
2132            break;
2133        case 3:
2134            sampleRateValue = BluetoothCodecConfig.SAMPLE_RATE_88200;
2135            break;
2136        case 4:
2137            sampleRateValue = BluetoothCodecConfig.SAMPLE_RATE_96000;
2138            break;
2139        default:
2140            break;
2141        }
2142
2143        // Bits Per Sample
2144        String bitsPerSample = mBluetoothSelectA2dpBitsPerSample.getValue();
2145        if (preference == mBluetoothSelectA2dpBitsPerSample) {
2146            bitsPerSample = newValue.toString();
2147            index = mBluetoothSelectA2dpBitsPerSample.findIndexOfValue(newValue.toString());
2148            if (index >= 0) {
2149                summaries = getResources().getStringArray(R.array.bluetooth_a2dp_codec_bits_per_sample_summaries);
2150                mBluetoothSelectA2dpBitsPerSample.setSummary(summaries[index]);
2151            }
2152        }
2153        index = mBluetoothSelectA2dpBitsPerSample.findIndexOfValue(bitsPerSample);
2154        switch (index) {
2155        case 0:
2156            // Reset to default
2157            break;
2158        case 1:
2159            bitsPerSampleValue = BluetoothCodecConfig.BITS_PER_SAMPLE_16;
2160            break;
2161        case 2:
2162            bitsPerSampleValue = BluetoothCodecConfig.BITS_PER_SAMPLE_24;
2163            break;
2164        case 3:
2165            bitsPerSampleValue = BluetoothCodecConfig.BITS_PER_SAMPLE_32;
2166            break;
2167        default:
2168            break;
2169        }
2170
2171        // Channel Mode
2172        String channelMode = mBluetoothSelectA2dpChannelMode.getValue();
2173        if (preference == mBluetoothSelectA2dpChannelMode) {
2174            channelMode = newValue.toString();
2175            index = mBluetoothSelectA2dpChannelMode.findIndexOfValue(newValue.toString());
2176            if (index >= 0) {
2177                summaries = getResources().getStringArray(R.array.bluetooth_a2dp_codec_channel_mode_summaries);
2178                mBluetoothSelectA2dpChannelMode.setSummary(summaries[index]);
2179            }
2180        }
2181        index = mBluetoothSelectA2dpChannelMode.findIndexOfValue(channelMode);
2182        switch (index) {
2183        case 0:
2184            // Reset to default
2185            break;
2186        case 1:
2187            channelModeValue = BluetoothCodecConfig.CHANNEL_MODE_MONO;
2188            break;
2189        case 2:
2190            channelModeValue = BluetoothCodecConfig.CHANNEL_MODE_STEREO;
2191            break;
2192        default:
2193            break;
2194        }
2195
2196        // LDAC Playback Quality
2197        String ldacPlaybackQuality = mBluetoothSelectA2dpLdacPlaybackQuality.getValue();
2198        if (preference == mBluetoothSelectA2dpLdacPlaybackQuality) {
2199            ldacPlaybackQuality = newValue.toString();
2200            index = mBluetoothSelectA2dpLdacPlaybackQuality.findIndexOfValue(newValue.toString());
2201            if (index >= 0) {
2202                summaries = getResources().getStringArray(R.array.bluetooth_a2dp_codec_ldac_playback_quality_summaries);
2203                mBluetoothSelectA2dpLdacPlaybackQuality.setSummary(summaries[index]);
2204            }
2205        }
2206        index = mBluetoothSelectA2dpLdacPlaybackQuality.findIndexOfValue(ldacPlaybackQuality);
2207        switch (index) {
2208        case 0:
2209        case 1:
2210        case 2:
2211        case 3:
2212            codecSpecific1Value = 1000 + index;
2213            break;
2214        default:
2215            break;
2216        }
2217
2218        BluetoothCodecConfig codecConfig =
2219            new BluetoothCodecConfig(codecTypeValue, codecPriorityValue,
2220                                     sampleRateValue, bitsPerSampleValue,
2221                                     channelModeValue, codecSpecific1Value,
2222                                     codecSpecific2Value, codecSpecific3Value,
2223                                     codecSpecific4Value);
2224
2225        synchronized (mBluetoothA2dpLock) {
2226            if (mBluetoothA2dp != null) {
2227                mBluetoothA2dp.setCodecConfigPreference(codecConfig);
2228            }
2229        }
2230    }