/* * Copyright (C) 2011 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. */ #ifndef ANDROID_AUDIO_CORE_H #define ANDROID_AUDIO_CORE_H #include #include #include #include #define popcount __builtin_popcount __BEGIN_DECLS /* The enums were moved here mostly from * frameworks/base/include/media/AudioSystem.h */ /* device address used to refer to the standard remote submix */ #define AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS "0" typedef int audio_io_handle_t; /* Audio stream types */ typedef enum { AUDIO_STREAM_DEFAULT = -1, AUDIO_STREAM_VOICE_CALL = 0, AUDIO_STREAM_SYSTEM = 1, AUDIO_STREAM_RING = 2, AUDIO_STREAM_MUSIC = 3, AUDIO_STREAM_ALARM = 4, AUDIO_STREAM_NOTIFICATION = 5, AUDIO_STREAM_BLUETOOTH_SCO = 6, AUDIO_STREAM_ENFORCED_AUDIBLE = 7, /* Sounds that cannot be muted by user and must be routed to speaker */ AUDIO_STREAM_DTMF = 8, AUDIO_STREAM_TTS = 9, AUDIO_STREAM_CNT, AUDIO_STREAM_MAX = AUDIO_STREAM_CNT - 1, } audio_stream_type_t; /* Do not change these values without updating their counterparts * in media/java/android/media/MediaRecorder.java! */ typedef enum { AUDIO_SOURCE_DEFAULT = 0, AUDIO_SOURCE_MIC = 1, AUDIO_SOURCE_VOICE_UPLINK = 2, AUDIO_SOURCE_VOICE_DOWNLINK = 3, AUDIO_SOURCE_VOICE_CALL = 4, AUDIO_SOURCE_CAMCORDER = 5, AUDIO_SOURCE_VOICE_RECOGNITION = 6, AUDIO_SOURCE_VOICE_COMMUNICATION = 7, AUDIO_SOURCE_REMOTE_SUBMIX = 8, /* Source for the mix to be presented remotely. */ /* An example of remote presentation is Wifi Display */ /* where a dongle attached to a TV can be used to */ /* play the mix captured by this audio source. */ AUDIO_SOURCE_CNT, AUDIO_SOURCE_MAX = AUDIO_SOURCE_CNT - 1, AUDIO_SOURCE_HOTWORD = 1999, /* A low-priority, preemptible audio source for for background software hotword detection. Same tuning as AUDIO_SOURCE_VOICE_RECOGNITION. Used only internally to the framework. Not exposed at the audio HAL. */ } audio_source_t; /* special audio session values * (XXX: should this be living in the audio effects land?) */ typedef enum { /* session for effects attached to a particular output stream * (value must be less than 0) */ AUDIO_SESSION_OUTPUT_STAGE = -1, /* session for effects applied to output mix. These effects can * be moved by audio policy manager to another output stream * (value must be 0) */ AUDIO_SESSION_OUTPUT_MIX = 0, } audio_session_t; /* Audio sub formats (see enum audio_format). */ /* PCM sub formats */ typedef enum { AUDIO_FORMAT_PCM_SUB_16_BIT = 0x1, /* DO NOT CHANGE - PCM signed 16 bits */ AUDIO_FORMAT_PCM_SUB_8_BIT = 0x2, /* DO NOT CHANGE - PCM unsigned 8 bits */ AUDIO_FORMAT_PCM_SUB_32_BIT = 0x3, /* PCM signed .31 fixed point */ AUDIO_FORMAT_PCM_SUB_8_24_BIT = 0x4, /* PCM signed 7.24 fixed point */ } audio_format_pcm_sub_fmt_t; /* MP3 sub format field definition : can use 11 LSBs in the same way as MP3 * frame header to specify bit rate, stereo mode, version... */ typedef enum { AUDIO_FORMAT_MP3_SUB_NONE = 0x0, } audio_format_mp3_sub_fmt_t; /* AMR NB/WB sub format field definition: specify frame block interleaving, * bandwidth efficient or octet aligned, encoding mode for recording... */ typedef enum { AUDIO_FORMAT_AMR_SUB_NONE = 0x0, } audio_format_amr_sub_fmt_t; /* AAC sub format field definition: specify profile or bitrate for recording... */ typedef enum { AUDIO_FORMAT_AAC_SUB_NONE = 0x0, } audio_format_aac_sub_fmt_t; /* VORBIS sub format field definition: specify quality for recording... */ typedef enum { AUDIO_FORMAT_VORBIS_SUB_NONE = 0x0, } audio_format_vorbis_sub_fmt_t; /* Audio format consists in a main format field (upper 8 bits) and a sub format * field (lower 24 bits). * * The main format indicates the main codec type. The sub format field * indicates options and parameters for each format. The sub format is mainly * used for record to indicate for instance the requested bitrate or profile. * It can also be used for certain formats to give informations not present in * the encoded audio stream (e.g. octet alignement for AMR). */ typedef enum { AUDIO_FORMAT_INVALID = 0xFFFFFFFFUL, AUDIO_FORMAT_DEFAULT = 0, AUDIO_FORMAT_PCM = 0x00000000UL, /* DO NOT CHANGE */ AUDIO_FORMAT_MP3 = 0x01000000UL, AUDIO_FORMAT_AMR_NB = 0x02000000UL, AUDIO_FORMAT_AMR_WB = 0x03000000UL, AUDIO_FORMAT_AAC = 0x04000000UL, AUDIO_FORMAT_HE_AAC_V1 = 0x05000000UL, AUDIO_FORMAT_HE_AAC_V2 = 0x06000000UL, AUDIO_FORMAT_VORBIS = 0x07000000UL, AUDIO_FORMAT_MAIN_MASK = 0xFF000000UL, AUDIO_FORMAT_SUB_MASK = 0x00FFFFFFUL, /* Aliases */ AUDIO_FORMAT_PCM_16_BIT = (AUDIO_FORMAT_PCM | AUDIO_FORMAT_PCM_SUB_16_BIT), AUDIO_FORMAT_PCM_8_BIT = (AUDIO_FORMAT_PCM | AUDIO_FORMAT_PCM_SUB_8_BIT), AUDIO_FORMAT_PCM_32_BIT = (AUDIO_FORMAT_PCM | AUDIO_FORMAT_PCM_SUB_32_BIT), AUDIO_FORMAT_PCM_8_24_BIT = (AUDIO_FORMAT_PCM | AUDIO_FORMAT_PCM_SUB_8_24_BIT), } audio_format_t; enum { /* output channels */ AUDIO_CHANNEL_OUT_FRONT_LEFT = 0x1, AUDIO_CHANNEL_OUT_FRONT_RIGHT = 0x2, AUDIO_CHANNEL_OUT_FRONT_CENTER = 0x4, AUDIO_CHANNEL_OUT_LOW_FREQUENCY = 0x8, AUDIO_CHANNEL_OUT_BACK_LEFT = 0x10, AUDIO_CHANNEL_OUT_BACK_RIGHT = 0x20, AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER = 0x40, AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER = 0x80, AUDIO_CHANNEL_OUT_BACK_CENTER = 0x100, AUDIO_CHANNEL_OUT_SIDE_LEFT = 0x200, AUDIO_CHANNEL_OUT_SIDE_RIGHT = 0x400, AUDIO_CHANNEL_OUT_TOP_CENTER = 0x800, AUDIO_CHANNEL_OUT_TOP_FRONT_LEFT = 0x1000, AUDIO_CHANNEL_OUT_TOP_FRONT_CENTER = 0x2000, AUDIO_CHANNEL_OUT_TOP_FRONT_RIGHT = 0x4000, AUDIO_CHANNEL_OUT_TOP_BACK_LEFT = 0x8000, AUDIO_CHANNEL_OUT_TOP_BACK_CENTER = 0x10000, AUDIO_CHANNEL_OUT_TOP_BACK_RIGHT = 0x20000, AUDIO_CHANNEL_OUT_MONO = AUDIO_CHANNEL_OUT_FRONT_LEFT, AUDIO_CHANNEL_OUT_STEREO = (AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_FRONT_RIGHT), AUDIO_CHANNEL_OUT_QUAD = (AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_FRONT_RIGHT | AUDIO_CHANNEL_OUT_BACK_LEFT | AUDIO_CHANNEL_OUT_BACK_RIGHT), AUDIO_CHANNEL_OUT_SURROUND = (AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_FRONT_RIGHT | AUDIO_CHANNEL_OUT_FRONT_CENTER | AUDIO_CHANNEL_OUT_BACK_CENTER), AUDIO_CHANNEL_OUT_5POINT1 = (AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_FRONT_RIGHT | AUDIO_CHANNEL_OUT_FRONT_CENTER | AUDIO_CHANNEL_OUT_LOW_FREQUENCY | AUDIO_CHANNEL_OUT_BACK_LEFT | AUDIO_CHANNEL_OUT_BACK_RIGHT), // matches the correct AudioFormat.CHANNEL_OUT_7POINT1_SURROUND definition for 7.1 AUDIO_CHANNEL_OUT_7POINT1 = (AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_FRONT_RIGHT | AUDIO_CHANNEL_OUT_FRONT_CENTER | AUDIO_CHANNEL_OUT_LOW_FREQUENCY | AUDIO_CHANNEL_OUT_BACK_LEFT | AUDIO_CHANNEL_OUT_BACK_RIGHT | AUDIO_CHANNEL_OUT_SIDE_LEFT | AUDIO_CHANNEL_OUT_SIDE_RIGHT), AUDIO_CHANNEL_OUT_ALL = (AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_FRONT_RIGHT | AUDIO_CHANNEL_OUT_FRONT_CENTER | AUDIO_CHANNEL_OUT_LOW_FREQUENCY | AUDIO_CHANNEL_OUT_BACK_LEFT | AUDIO_CHANNEL_OUT_BACK_RIGHT | AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER | AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER | AUDIO_CHANNEL_OUT_BACK_CENTER| AUDIO_CHANNEL_OUT_SIDE_LEFT| AUDIO_CHANNEL_OUT_SIDE_RIGHT| AUDIO_CHANNEL_OUT_TOP_CENTER| AUDIO_CHANNEL_OUT_TOP_FRONT_LEFT| AUDIO_CHANNEL_OUT_TOP_FRONT_CENTER| AUDIO_CHANNEL_OUT_TOP_FRONT_RIGHT| AUDIO_CHANNEL_OUT_TOP_BACK_LEFT| AUDIO_CHANNEL_OUT_TOP_BACK_CENTER| AUDIO_CHANNEL_OUT_TOP_BACK_RIGHT), /* input channels */ AUDIO_CHANNEL_IN_LEFT = 0x4, AUDIO_CHANNEL_IN_RIGHT = 0x8, AUDIO_CHANNEL_IN_FRONT = 0x10, AUDIO_CHANNEL_IN_BACK = 0x20, AUDIO_CHANNEL_IN_LEFT_PROCESSED = 0x40, AUDIO_CHANNEL_IN_RIGHT_PROCESSED = 0x80, AUDIO_CHANNEL_IN_FRONT_PROCESSED = 0x100, AUDIO_CHANNEL_IN_BACK_PROCESSED = 0x200, AUDIO_CHANNEL_IN_PRESSURE = 0x400, AUDIO_CHANNEL_IN_X_AXIS = 0x800, AUDIO_CHANNEL_IN_Y_AXIS = 0x1000, AUDIO_CHANNEL_IN_Z_AXIS = 0x2000, AUDIO_CHANNEL_IN_VOICE_UPLINK = 0x4000, AUDIO_CHANNEL_IN_VOICE_DNLINK = 0x8000, AUDIO_CHANNEL_IN_MONO = AUDIO_CHANNEL_IN_FRONT, AUDIO_CHANNEL_IN_STEREO = (AUDIO_CHANNEL_IN_LEFT | AUDIO_CHANNEL_IN_RIGHT), AUDIO_CHANNEL_IN_FRONT_BACK = (AUDIO_CHANNEL_IN_FRONT | AUDIO_CHANNEL_IN_BACK), AUDIO_CHANNEL_IN_ALL = (AUDIO_CHANNEL_IN_LEFT | AUDIO_CHANNEL_IN_RIGHT | AUDIO_CHANNEL_IN_FRONT | AUDIO_CHANNEL_IN_BACK| AUDIO_CHANNEL_IN_LEFT_PROCESSED | AUDIO_CHANNEL_IN_RIGHT_PROCESSED | AUDIO_CHANNEL_IN_FRONT_PROCESSED | AUDIO_CHANNEL_IN_BACK_PROCESSED| AUDIO_CHANNEL_IN_PRESSURE | AUDIO_CHANNEL_IN_X_AXIS | AUDIO_CHANNEL_IN_Y_AXIS | AUDIO_CHANNEL_IN_Z_AXIS | AUDIO_CHANNEL_IN_VOICE_UPLINK | AUDIO_CHANNEL_IN_VOICE_DNLINK), }; typedef uint32_t audio_channel_mask_t; typedef enum { AUDIO_MODE_INVALID = -2, AUDIO_MODE_CURRENT = -1, AUDIO_MODE_NORMAL = 0, AUDIO_MODE_RINGTONE = 1, AUDIO_MODE_IN_CALL = 2, AUDIO_MODE_IN_COMMUNICATION = 3, AUDIO_MODE_CNT, AUDIO_MODE_MAX = AUDIO_MODE_CNT - 1, } audio_mode_t; typedef enum { AUDIO_IN_ACOUSTICS_AGC_ENABLE = 0x0001, AUDIO_IN_ACOUSTICS_AGC_DISABLE = 0, AUDIO_IN_ACOUSTICS_NS_ENABLE = 0x0002, AUDIO_IN_ACOUSTICS_NS_DISABLE = 0, AUDIO_IN_ACOUSTICS_TX_IIR_ENABLE = 0x0004, AUDIO_IN_ACOUSTICS_TX_DISABLE = 0, } audio_in_acoustics_t; enum { AUDIO_DEVICE_NONE = 0x0, /* reserved bits */ AUDIO_DEVICE_BIT_IN = 0x80000000, AUDIO_DEVICE_BIT_DEFAULT = 0x40000000, /* output devices */ AUDIO_DEVICE_OUT_EARPIECE = 0x1, AUDIO_DEVICE_OUT_SPEAKER = 0x2, AUDIO_DEVICE_OUT_WIRED_HEADSET = 0x4, AUDIO_DEVICE_OUT_WIRED_HEADPHONE = 0x8, AUDIO_DEVICE_OUT_BLUETOOTH_SCO = 0x10, AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET = 0x20, AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT = 0x40, AUDIO_DEVICE_OUT_BLUETOOTH_A2DP = 0x80, AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES = 0x100, AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER = 0x200, AUDIO_DEVICE_OUT_AUX_DIGITAL = 0x400, AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET = 0x800, AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET = 0x1000, AUDIO_DEVICE_OUT_USB_ACCESSORY = 0x2000, AUDIO_DEVICE_OUT_USB_DEVICE = 0x4000, AUDIO_DEVICE_OUT_REMOTE_SUBMIX = 0x8000, AUDIO_DEVICE_OUT_DEFAULT = AUDIO_DEVICE_BIT_DEFAULT, AUDIO_DEVICE_OUT_ALL = (AUDIO_DEVICE_OUT_EARPIECE | AUDIO_DEVICE_OUT_SPEAKER | AUDIO_DEVICE_OUT_WIRED_HEADSET | AUDIO_DEVICE_OUT_WIRED_HEADPHONE | AUDIO_DEVICE_OUT_BLUETOOTH_SCO | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER | AUDIO_DEVICE_OUT_AUX_DIGITAL | AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET | AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET | AUDIO_DEVICE_OUT_USB_ACCESSORY | AUDIO_DEVICE_OUT_USB_DEVICE | AUDIO_DEVICE_OUT_REMOTE_SUBMIX | AUDIO_DEVICE_OUT_DEFAULT), AUDIO_DEVICE_OUT_ALL_A2DP = (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER), AUDIO_DEVICE_OUT_ALL_SCO = (AUDIO_DEVICE_OUT_BLUETOOTH_SCO | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT), AUDIO_DEVICE_OUT_ALL_USB = (AUDIO_DEVICE_OUT_USB_ACCESSORY | AUDIO_DEVICE_OUT_USB_DEVICE), /* input devices */ AUDIO_DEVICE_IN_COMMUNICATION = AUDIO_DEVICE_BIT_IN | 0x1, AUDIO_DEVICE_IN_AMBIENT = AUDIO_DEVICE_BIT_IN | 0x2, AUDIO_DEVICE_IN_BUILTIN_MIC = AUDIO_DEVICE_BIT_IN | 0x4, AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET = AUDIO_DEVICE_BIT_IN | 0x8, AUDIO_DEVICE_IN_WIRED_HEADSET = AUDIO_DEVICE_BIT_IN | 0x10, AUDIO_DEVICE_IN_AUX_DIGITAL = AUDIO_DEVICE_BIT_IN | 0x20, AUDIO_DEVICE_IN_VOICE_CALL = AUDIO_DEVICE_BIT_IN | 0x40, AUDIO_DEVICE_IN_BACK_MIC = AUDIO_DEVICE_BIT_IN | 0x80, AUDIO_DEVICE_IN_REMOTE_SUBMIX = AUDIO_DEVICE_BIT_IN | 0x100, AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET = AUDIO_DEVICE_BIT_IN | 0x200, AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET = AUDIO_DEVICE_BIT_IN | 0x400, AUDIO_DEVICE_IN_USB_ACCESSORY = AUDIO_DEVICE_BIT_IN | 0x800, AUDIO_DEVICE_IN_USB_DEVICE = AUDIO_DEVICE_BIT_IN | 0x1000, AUDIO_DEVICE_IN_DEFAULT = AUDIO_DEVICE_BIT_IN | AUDIO_DEVICE_BIT_DEFAULT, AUDIO_DEVICE_IN_ALL = (AUDIO_DEVICE_IN_COMMUNICATION | AUDIO_DEVICE_IN_AMBIENT | AUDIO_DEVICE_IN_BUILTIN_MIC | AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET | AUDIO_DEVICE_IN_WIRED_HEADSET | AUDIO_DEVICE_IN_AUX_DIGITAL | AUDIO_DEVICE_IN_VOICE_CALL | AUDIO_DEVICE_IN_BACK_MIC | AUDIO_DEVICE_IN_REMOTE_SUBMIX | AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET | AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET | AUDIO_DEVICE_IN_USB_ACCESSORY | AUDIO_DEVICE_IN_USB_DEVICE | AUDIO_DEVICE_IN_DEFAULT), AUDIO_DEVICE_IN_ALL_SCO = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET, }; typedef uint32_t audio_devices_t; /* the audio output flags serve two purposes: * - when an AudioTrack is created they indicate a "wish" to be connected to an * output stream with attributes corresponding to the specified flags * - when present in an output profile descriptor listed for a particular audio * hardware module, they indicate that an output stream can be opened that * supports the attributes indicated by the flags. * the audio policy manager will try to match the flags in the request * (when getOuput() is called) to an available output stream. */ typedef enum { AUDIO_OUTPUT_FLAG_NONE = 0x0, // no attributes AUDIO_OUTPUT_FLAG_DIRECT = 0x1, // this output directly connects a track // to one output stream: no software mixer AUDIO_OUTPUT_FLAG_PRIMARY = 0x2, // this output is the primary output of // the device. It is unique and must be // present. It is opened by default and // receives routing, audio mode and volume // controls related to voice calls. AUDIO_OUTPUT_FLAG_FAST = 0x4, // output supports "fast tracks", // defined elsewhere AUDIO_OUTPUT_FLAG_DEEP_BUFFER = 0x8, // use deep audio buffers AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD = 0x10, // offload playback of compressed // streams to hardware codec AUDIO_OUTPUT_FLAG_NON_BLOCKING = 0x20 // use non-blocking write } audio_output_flags_t; /* The audio input flags are analogous to audio output flags. * Currently they are used only when an AudioRecord is created, * to indicate a preference to be connected to an input stream with * attributes corresponding to the specified flags. */ typedef enum { AUDIO_INPUT_FLAG_NONE = 0x0, // no attributes AUDIO_INPUT_FLAG_FAST = 0x1, // prefer an input that supports "fast tracks" } audio_input_flags_t; /* Additional information about compressed streams offloaded to * hardware playback * The version and size fields must be initialized by the caller by using * one of the constants defined here. */ typedef struct { uint16_t version; // version of the info structure uint16_t size; // total size of the structure including version and size uint32_t sample_rate; // sample rate in Hz audio_channel_mask_t channel_mask; // channel mask audio_format_t format; // audio format audio_stream_type_t stream_type; // stream type uint32_t bit_rate; // bit rate in bits per second int64_t duration_us; // duration in microseconds, -1 if unknown bool has_video; // true if stream is tied to a video stream bool is_streaming; // true if streaming, false if local playback } audio_offload_info_t; #define AUDIO_MAKE_OFFLOAD_INFO_VERSION(maj,min) \ ((((maj) & 0xff) << 8) | ((min) & 0xff)) #define AUDIO_OFFLOAD_INFO_VERSION_0_1 AUDIO_MAKE_OFFLOAD_INFO_VERSION(0, 1) #define AUDIO_OFFLOAD_INFO_VERSION_CURRENT AUDIO_OFFLOAD_INFO_VERSION_0_1 static const audio_offload_info_t AUDIO_INFO_INITIALIZER = { version: AUDIO_OFFLOAD_INFO_VERSION_CURRENT, size: sizeof(audio_offload_info_t), }; static inline bool audio_is_output_device(audio_devices_t device) { if (((device & AUDIO_DEVICE_BIT_IN) == 0) && (popcount(device) == 1) && ((device & ~AUDIO_DEVICE_OUT_ALL) == 0)) return true; else return false; } static inline bool audio_is_input_device(audio_devices_t device) { if ((device & AUDIO_DEVICE_BIT_IN) != 0) { device &= ~AUDIO_DEVICE_BIT_IN; if ((popcount(device) == 1) && ((device & ~AUDIO_DEVICE_IN_ALL) == 0)) return true; } return false; } static inline bool audio_is_output_devices(audio_devices_t device) { return (device & AUDIO_DEVICE_BIT_IN) == 0; } static inline bool audio_is_a2dp_device(audio_devices_t device) { if ((popcount(device) == 1) && (device & AUDIO_DEVICE_OUT_ALL_A2DP)) return true; else return false; } static inline bool audio_is_bluetooth_sco_device(audio_devices_t device) { device &= ~AUDIO_DEVICE_BIT_IN; if ((popcount(device) == 1) && (device & (AUDIO_DEVICE_OUT_ALL_SCO | AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET))) return true; else return false; } static inline bool audio_is_usb_device(audio_devices_t device) { if ((popcount(device) == 1) && (device & AUDIO_DEVICE_OUT_ALL_USB)) return true; else return false; } static inline bool audio_is_remote_submix_device(audio_devices_t device) { if ((device & AUDIO_DEVICE_OUT_REMOTE_SUBMIX) == AUDIO_DEVICE_OUT_REMOTE_SUBMIX || (device & AUDIO_DEVICE_IN_REMOTE_SUBMIX) == AUDIO_DEVICE_IN_REMOTE_SUBMIX) return true; else return false; } static inline bool audio_is_input_channel(audio_channel_mask_t channel) { if ((channel & ~AUDIO_CHANNEL_IN_ALL) == 0) return channel != 0; else return false; } static inline bool audio_is_output_channel(audio_channel_mask_t channel) { if ((channel & ~AUDIO_CHANNEL_OUT_ALL) == 0) return channel != 0; else return false; } /* Derive an output channel mask from a channel count. * This is to be used when the content channel mask is unknown. The 1, 2, 4, 5, 6, 7 and 8 channel * cases are mapped to the standard game/home-theater layouts, but note that 4 is mapped to quad, * and not stereo + FC + mono surround. A channel count of 3 is arbitrarily mapped to stereo + FC * for continuity with stereo. * Returns the matching channel mask, or 0 if the number of channels exceeds that of the * configurations for which a default channel mask is defined. */ static inline audio_channel_mask_t audio_channel_out_mask_from_count(uint32_t channel_count) { switch(channel_count) { case 1: return AUDIO_CHANNEL_OUT_MONO; case 2: return AUDIO_CHANNEL_OUT_STEREO; case 3: return (AUDIO_CHANNEL_OUT_STEREO | AUDIO_CHANNEL_OUT_FRONT_CENTER); case 4: // 4.0 return AUDIO_CHANNEL_OUT_QUAD; case 5: // 5.0 return (AUDIO_CHANNEL_OUT_QUAD | AUDIO_CHANNEL_OUT_FRONT_CENTER); case 6: // 5.1 return AUDIO_CHANNEL_OUT_5POINT1; case 7: // 6.1 return (AUDIO_CHANNEL_OUT_5POINT1 | AUDIO_CHANNEL_OUT_BACK_CENTER); case 8: return AUDIO_CHANNEL_OUT_7POINT1; default: return 0; } } /* Similar to above, but for input. Currently handles only mono and stereo. */ static inline audio_channel_mask_t audio_channel_in_mask_from_count(uint32_t channel_count) { switch (channel_count) { case 1: return AUDIO_CHANNEL_IN_MONO; case 2: return AUDIO_CHANNEL_IN_STEREO; default: return 0; } } static inline bool audio_is_valid_format(audio_format_t format) { switch (format & AUDIO_FORMAT_MAIN_MASK) { case AUDIO_FORMAT_PCM: if (format != AUDIO_FORMAT_PCM_16_BIT && format != AUDIO_FORMAT_PCM_8_BIT) { return false; } case AUDIO_FORMAT_MP3: case AUDIO_FORMAT_AMR_NB: case AUDIO_FORMAT_AMR_WB: case AUDIO_FORMAT_AAC: case AUDIO_FORMAT_HE_AAC_V1: case AUDIO_FORMAT_HE_AAC_V2: case AUDIO_FORMAT_VORBIS: return true; default: return false; } } static inline bool audio_is_linear_pcm(audio_format_t format) { return ((format & AUDIO_FORMAT_MAIN_MASK) == AUDIO_FORMAT_PCM); } static inline size_t audio_bytes_per_sample(audio_format_t format) { size_t size = 0; switch (format) { case AUDIO_FORMAT_PCM_32_BIT: case AUDIO_FORMAT_PCM_8_24_BIT: size = sizeof(int32_t); break; case AUDIO_FORMAT_PCM_16_BIT: size = sizeof(int16_t); break; case AUDIO_FORMAT_PCM_8_BIT: size = sizeof(uint8_t); break; default: break; } return size; } __END_DECLS #endif // ANDROID_AUDIO_CORE_H