services/audiopolicy/managerdefault/ConfigParsingUtils.h

/*
 * Copyright (C) 2015 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.
 */

namespace android {

// ----------------------------------------------------------------------------
// Definitions for audio_policy.conf file parsing
// ----------------------------------------------------------------------------

struct StringToEnum {
    const char *name;
    uint32_t value;
};

#define STRING_TO_ENUM(string) { #string, string }
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
#endif

const StringToEnum sDeviceNameToEnumTable[] = {
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_EARPIECE),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER_SAFE),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADSET),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADPHONE),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_SCO),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_A2DP),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_DIGITAL),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_HDMI),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_ACCESSORY),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_DEVICE),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_USB),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_REMOTE_SUBMIX),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_TELEPHONY_TX),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_LINE),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_HDMI_ARC),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPDIF),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_FM),
    STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_LINE),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_AMBIENT),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_BUILTIN_MIC),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_ALL_SCO),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_WIRED_HEADSET),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_AUX_DIGITAL),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_HDMI),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_TELEPHONY_RX),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_VOICE_CALL),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_BACK_MIC),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_REMOTE_SUBMIX),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_ACCESSORY),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_DEVICE),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_FM_TUNER),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_TV_TUNER),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_LINE),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_SPDIF),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_A2DP),
    STRING_TO_ENUM(AUDIO_DEVICE_IN_LOOPBACK),
};

const StringToEnum sOutputFlagNameToEnumTable[] = {
    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DIRECT),
    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PRIMARY),
    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_FAST),
    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DEEP_BUFFER),
    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD),
    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_NON_BLOCKING),
    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_HW_AV_SYNC),
};

const StringToEnum sInputFlagNameToEnumTable[] = {
    STRING_TO_ENUM(AUDIO_INPUT_FLAG_FAST),
    STRING_TO_ENUM(AUDIO_INPUT_FLAG_HW_HOTWORD),
};

const StringToEnum sFormatNameToEnumTable[] = {
    STRING_TO_ENUM(AUDIO_FORMAT_PCM_16_BIT),
    STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_BIT),
    STRING_TO_ENUM(AUDIO_FORMAT_PCM_32_BIT),
    STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_24_BIT),
    STRING_TO_ENUM(AUDIO_FORMAT_PCM_FLOAT),
    STRING_TO_ENUM(AUDIO_FORMAT_PCM_24_BIT_PACKED),
    STRING_TO_ENUM(AUDIO_FORMAT_MP3),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_MAIN),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_LC),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_SSR),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_LTP),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_HE_V1),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_SCALABLE),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_ERLC),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_LD),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_HE_V2),
    STRING_TO_ENUM(AUDIO_FORMAT_AAC_ELD),
    STRING_TO_ENUM(AUDIO_FORMAT_VORBIS),
    STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V1),
    STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V2),
    STRING_TO_ENUM(AUDIO_FORMAT_OPUS),
    STRING_TO_ENUM(AUDIO_FORMAT_AC3),
    STRING_TO_ENUM(AUDIO_FORMAT_E_AC3),
};

const StringToEnum sOutChannelsNameToEnumTable[] = {
    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_MONO),
    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO),
    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_QUAD),
    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1),
    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1),
};

const StringToEnum sInChannelsNameToEnumTable[] = {
    STRING_TO_ENUM(AUDIO_CHANNEL_IN_MONO),
    STRING_TO_ENUM(AUDIO_CHANNEL_IN_STEREO),
    STRING_TO_ENUM(AUDIO_CHANNEL_IN_FRONT_BACK),
};

const StringToEnum sGainModeNameToEnumTable[] = {
    STRING_TO_ENUM(AUDIO_GAIN_MODE_JOINT),
    STRING_TO_ENUM(AUDIO_GAIN_MODE_CHANNELS),
    STRING_TO_ENUM(AUDIO_GAIN_MODE_RAMP),
};

class ConfigParsingUtils
{
public:
    static uint32_t stringToEnum(const struct StringToEnum *table,
            size_t size,
            const char *name);
    static const char *enumToString(const struct StringToEnum *table,
            size_t size,
            uint32_t value);
    static bool stringToBool(const char *value);
    static uint32_t parseOutputFlagNames(char *name);
    static uint32_t parseInputFlagNames(char *name);
    static audio_devices_t parseDeviceNames(char *name);
};

}; // namespace android