468 lines
18 KiB
C
468 lines
18 KiB
C
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_AUDIO_CORE_H
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#define ANDROID_AUDIO_CORE_H
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#include <stdbool.h>
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#include <stdint.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <cutils/bitops.h>
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__BEGIN_DECLS
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/* The enums were moved here mostly from
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* frameworks/base/include/media/AudioSystem.h
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*/
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typedef int audio_io_handle_t;
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/* Audio stream types */
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typedef enum {
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AUDIO_STREAM_DEFAULT = -1,
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AUDIO_STREAM_VOICE_CALL = 0,
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AUDIO_STREAM_SYSTEM = 1,
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AUDIO_STREAM_RING = 2,
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AUDIO_STREAM_MUSIC = 3,
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AUDIO_STREAM_ALARM = 4,
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AUDIO_STREAM_NOTIFICATION = 5,
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AUDIO_STREAM_BLUETOOTH_SCO = 6,
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AUDIO_STREAM_ENFORCED_AUDIBLE = 7, /* Sounds that cannot be muted by user and must be routed to speaker */
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AUDIO_STREAM_DTMF = 8,
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AUDIO_STREAM_TTS = 9,
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AUDIO_STREAM_CNT,
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AUDIO_STREAM_MAX = AUDIO_STREAM_CNT - 1,
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} audio_stream_type_t;
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/* Do not change these values without updating their counterparts
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* in media/java/android/media/MediaRecorder.java!
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*/
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typedef enum {
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AUDIO_SOURCE_DEFAULT = 0,
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AUDIO_SOURCE_MIC = 1,
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AUDIO_SOURCE_VOICE_UPLINK = 2,
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AUDIO_SOURCE_VOICE_DOWNLINK = 3,
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AUDIO_SOURCE_VOICE_CALL = 4,
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AUDIO_SOURCE_CAMCORDER = 5,
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AUDIO_SOURCE_VOICE_RECOGNITION = 6,
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AUDIO_SOURCE_VOICE_COMMUNICATION = 7,
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AUDIO_SOURCE_CNT,
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AUDIO_SOURCE_MAX = AUDIO_SOURCE_CNT - 1,
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} audio_source_t;
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/* special audio session values
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* (XXX: should this be living in the audio effects land?)
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*/
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typedef enum {
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/* session for effects attached to a particular output stream
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* (value must be less than 0)
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*/
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AUDIO_SESSION_OUTPUT_STAGE = -1,
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/* session for effects applied to output mix. These effects can
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* be moved by audio policy manager to another output stream
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* (value must be 0)
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*/
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AUDIO_SESSION_OUTPUT_MIX = 0,
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} audio_session_t;
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/* Audio sub formats (see enum audio_format). */
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/* PCM sub formats */
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typedef enum {
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AUDIO_FORMAT_PCM_SUB_16_BIT = 0x1, /* DO NOT CHANGE - PCM signed 16 bits */
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AUDIO_FORMAT_PCM_SUB_8_BIT = 0x2, /* DO NOT CHANGE - PCM unsigned 8 bits */
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AUDIO_FORMAT_PCM_SUB_32_BIT = 0x3, /* PCM signed .31 fixed point */
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AUDIO_FORMAT_PCM_SUB_8_24_BIT = 0x4, /* PCM signed 7.24 fixed point */
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} audio_format_pcm_sub_fmt_t;
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/* MP3 sub format field definition : can use 11 LSBs in the same way as MP3
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* frame header to specify bit rate, stereo mode, version...
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*/
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typedef enum {
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AUDIO_FORMAT_MP3_SUB_NONE = 0x0,
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} audio_format_mp3_sub_fmt_t;
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/* AMR NB/WB sub format field definition: specify frame block interleaving,
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* bandwidth efficient or octet aligned, encoding mode for recording...
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*/
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typedef enum {
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AUDIO_FORMAT_AMR_SUB_NONE = 0x0,
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} audio_format_amr_sub_fmt_t;
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/* AAC sub format field definition: specify profile or bitrate for recording... */
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typedef enum {
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AUDIO_FORMAT_AAC_SUB_NONE = 0x0,
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} audio_format_aac_sub_fmt_t;
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/* VORBIS sub format field definition: specify quality for recording... */
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typedef enum {
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AUDIO_FORMAT_VORBIS_SUB_NONE = 0x0,
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} audio_format_vorbis_sub_fmt_t;
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/* Audio format consists in a main format field (upper 8 bits) and a sub format
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* field (lower 24 bits).
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*
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* The main format indicates the main codec type. The sub format field
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* indicates options and parameters for each format. The sub format is mainly
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* used for record to indicate for instance the requested bitrate or profile.
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* It can also be used for certain formats to give informations not present in
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* the encoded audio stream (e.g. octet alignement for AMR).
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*/
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typedef enum {
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AUDIO_FORMAT_INVALID = 0xFFFFFFFFUL,
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AUDIO_FORMAT_DEFAULT = 0,
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AUDIO_FORMAT_PCM = 0x00000000UL, /* DO NOT CHANGE */
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AUDIO_FORMAT_MP3 = 0x01000000UL,
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AUDIO_FORMAT_AMR_NB = 0x02000000UL,
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AUDIO_FORMAT_AMR_WB = 0x03000000UL,
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AUDIO_FORMAT_AAC = 0x04000000UL,
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AUDIO_FORMAT_HE_AAC_V1 = 0x05000000UL,
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AUDIO_FORMAT_HE_AAC_V2 = 0x06000000UL,
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AUDIO_FORMAT_VORBIS = 0x07000000UL,
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AUDIO_FORMAT_MAIN_MASK = 0xFF000000UL,
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AUDIO_FORMAT_SUB_MASK = 0x00FFFFFFUL,
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/* Aliases */
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AUDIO_FORMAT_PCM_16_BIT = (AUDIO_FORMAT_PCM |
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AUDIO_FORMAT_PCM_SUB_16_BIT),
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AUDIO_FORMAT_PCM_8_BIT = (AUDIO_FORMAT_PCM |
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AUDIO_FORMAT_PCM_SUB_8_BIT),
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AUDIO_FORMAT_PCM_32_BIT = (AUDIO_FORMAT_PCM |
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AUDIO_FORMAT_PCM_SUB_32_BIT),
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AUDIO_FORMAT_PCM_8_24_BIT = (AUDIO_FORMAT_PCM |
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AUDIO_FORMAT_PCM_SUB_8_24_BIT),
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} audio_format_t;
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typedef enum {
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/* output channels */
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AUDIO_CHANNEL_OUT_FRONT_LEFT = 0x1,
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AUDIO_CHANNEL_OUT_FRONT_RIGHT = 0x2,
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AUDIO_CHANNEL_OUT_FRONT_CENTER = 0x4,
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AUDIO_CHANNEL_OUT_LOW_FREQUENCY = 0x8,
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AUDIO_CHANNEL_OUT_BACK_LEFT = 0x10,
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AUDIO_CHANNEL_OUT_BACK_RIGHT = 0x20,
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AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER = 0x40,
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AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER = 0x80,
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AUDIO_CHANNEL_OUT_BACK_CENTER = 0x100,
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AUDIO_CHANNEL_OUT_SIDE_LEFT = 0x200,
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AUDIO_CHANNEL_OUT_SIDE_RIGHT = 0x400,
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AUDIO_CHANNEL_OUT_TOP_CENTER = 0x800,
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AUDIO_CHANNEL_OUT_TOP_FRONT_LEFT = 0x1000,
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AUDIO_CHANNEL_OUT_TOP_FRONT_CENTER = 0x2000,
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AUDIO_CHANNEL_OUT_TOP_FRONT_RIGHT = 0x4000,
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AUDIO_CHANNEL_OUT_TOP_BACK_LEFT = 0x8000,
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AUDIO_CHANNEL_OUT_TOP_BACK_CENTER = 0x10000,
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AUDIO_CHANNEL_OUT_TOP_BACK_RIGHT = 0x20000,
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AUDIO_CHANNEL_OUT_MONO = AUDIO_CHANNEL_OUT_FRONT_LEFT,
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AUDIO_CHANNEL_OUT_STEREO = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
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AUDIO_CHANNEL_OUT_FRONT_RIGHT),
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AUDIO_CHANNEL_OUT_QUAD = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
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AUDIO_CHANNEL_OUT_FRONT_RIGHT |
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AUDIO_CHANNEL_OUT_BACK_LEFT |
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AUDIO_CHANNEL_OUT_BACK_RIGHT),
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AUDIO_CHANNEL_OUT_SURROUND = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
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AUDIO_CHANNEL_OUT_FRONT_RIGHT |
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AUDIO_CHANNEL_OUT_FRONT_CENTER |
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AUDIO_CHANNEL_OUT_BACK_CENTER),
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AUDIO_CHANNEL_OUT_5POINT1 = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
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AUDIO_CHANNEL_OUT_FRONT_RIGHT |
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AUDIO_CHANNEL_OUT_FRONT_CENTER |
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AUDIO_CHANNEL_OUT_LOW_FREQUENCY |
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AUDIO_CHANNEL_OUT_BACK_LEFT |
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AUDIO_CHANNEL_OUT_BACK_RIGHT),
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// matches the correct AudioFormat.CHANNEL_OUT_7POINT1_SURROUND definition for 7.1
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AUDIO_CHANNEL_OUT_7POINT1 = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
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AUDIO_CHANNEL_OUT_FRONT_RIGHT |
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AUDIO_CHANNEL_OUT_FRONT_CENTER |
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AUDIO_CHANNEL_OUT_LOW_FREQUENCY |
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AUDIO_CHANNEL_OUT_BACK_LEFT |
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AUDIO_CHANNEL_OUT_BACK_RIGHT |
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AUDIO_CHANNEL_OUT_SIDE_LEFT |
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AUDIO_CHANNEL_OUT_SIDE_RIGHT),
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AUDIO_CHANNEL_OUT_ALL = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
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AUDIO_CHANNEL_OUT_FRONT_RIGHT |
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AUDIO_CHANNEL_OUT_FRONT_CENTER |
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AUDIO_CHANNEL_OUT_LOW_FREQUENCY |
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AUDIO_CHANNEL_OUT_BACK_LEFT |
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AUDIO_CHANNEL_OUT_BACK_RIGHT |
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AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER |
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AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER |
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AUDIO_CHANNEL_OUT_BACK_CENTER|
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AUDIO_CHANNEL_OUT_SIDE_LEFT|
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AUDIO_CHANNEL_OUT_SIDE_RIGHT|
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AUDIO_CHANNEL_OUT_TOP_CENTER|
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AUDIO_CHANNEL_OUT_TOP_FRONT_LEFT|
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AUDIO_CHANNEL_OUT_TOP_FRONT_CENTER|
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AUDIO_CHANNEL_OUT_TOP_FRONT_RIGHT|
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AUDIO_CHANNEL_OUT_TOP_BACK_LEFT|
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AUDIO_CHANNEL_OUT_TOP_BACK_CENTER|
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AUDIO_CHANNEL_OUT_TOP_BACK_RIGHT),
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/* input channels */
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AUDIO_CHANNEL_IN_LEFT = 0x4,
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AUDIO_CHANNEL_IN_RIGHT = 0x8,
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AUDIO_CHANNEL_IN_FRONT = 0x10,
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AUDIO_CHANNEL_IN_BACK = 0x20,
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AUDIO_CHANNEL_IN_LEFT_PROCESSED = 0x40,
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AUDIO_CHANNEL_IN_RIGHT_PROCESSED = 0x80,
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AUDIO_CHANNEL_IN_FRONT_PROCESSED = 0x100,
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AUDIO_CHANNEL_IN_BACK_PROCESSED = 0x200,
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AUDIO_CHANNEL_IN_PRESSURE = 0x400,
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AUDIO_CHANNEL_IN_X_AXIS = 0x800,
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AUDIO_CHANNEL_IN_Y_AXIS = 0x1000,
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AUDIO_CHANNEL_IN_Z_AXIS = 0x2000,
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AUDIO_CHANNEL_IN_VOICE_UPLINK = 0x4000,
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AUDIO_CHANNEL_IN_VOICE_DNLINK = 0x8000,
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AUDIO_CHANNEL_IN_MONO = AUDIO_CHANNEL_IN_FRONT,
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AUDIO_CHANNEL_IN_STEREO = (AUDIO_CHANNEL_IN_LEFT | AUDIO_CHANNEL_IN_RIGHT),
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AUDIO_CHANNEL_IN_ALL = (AUDIO_CHANNEL_IN_LEFT |
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AUDIO_CHANNEL_IN_RIGHT |
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AUDIO_CHANNEL_IN_FRONT |
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AUDIO_CHANNEL_IN_BACK|
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AUDIO_CHANNEL_IN_LEFT_PROCESSED |
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AUDIO_CHANNEL_IN_RIGHT_PROCESSED |
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AUDIO_CHANNEL_IN_FRONT_PROCESSED |
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AUDIO_CHANNEL_IN_BACK_PROCESSED|
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AUDIO_CHANNEL_IN_PRESSURE |
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AUDIO_CHANNEL_IN_X_AXIS |
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AUDIO_CHANNEL_IN_Y_AXIS |
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AUDIO_CHANNEL_IN_Z_AXIS |
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AUDIO_CHANNEL_IN_VOICE_UPLINK |
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AUDIO_CHANNEL_IN_VOICE_DNLINK),
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};
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typedef uint32_t audio_channel_mask_t;
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typedef enum {
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AUDIO_MODE_INVALID = -2,
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AUDIO_MODE_CURRENT = -1,
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AUDIO_MODE_NORMAL = 0,
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AUDIO_MODE_RINGTONE = 1,
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AUDIO_MODE_IN_CALL = 2,
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AUDIO_MODE_IN_COMMUNICATION = 3,
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AUDIO_MODE_CNT,
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AUDIO_MODE_MAX = AUDIO_MODE_CNT - 1,
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} audio_mode_t;
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typedef enum {
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AUDIO_IN_ACOUSTICS_AGC_ENABLE = 0x0001,
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AUDIO_IN_ACOUSTICS_AGC_DISABLE = 0,
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AUDIO_IN_ACOUSTICS_NS_ENABLE = 0x0002,
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AUDIO_IN_ACOUSTICS_NS_DISABLE = 0,
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AUDIO_IN_ACOUSTICS_TX_IIR_ENABLE = 0x0004,
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AUDIO_IN_ACOUSTICS_TX_DISABLE = 0,
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} audio_in_acoustics_t;
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typedef enum {
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/* output devices */
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AUDIO_DEVICE_OUT_EARPIECE = 0x1,
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AUDIO_DEVICE_OUT_SPEAKER = 0x2,
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AUDIO_DEVICE_OUT_WIRED_HEADSET = 0x4,
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AUDIO_DEVICE_OUT_WIRED_HEADPHONE = 0x8,
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AUDIO_DEVICE_OUT_BLUETOOTH_SCO = 0x10,
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AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET = 0x20,
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AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT = 0x40,
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AUDIO_DEVICE_OUT_BLUETOOTH_A2DP = 0x80,
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AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES = 0x100,
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AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER = 0x200,
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AUDIO_DEVICE_OUT_AUX_DIGITAL = 0x400,
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AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET = 0x800,
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AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET = 0x1000,
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AUDIO_DEVICE_OUT_DEFAULT = 0x8000,
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AUDIO_DEVICE_OUT_ALL = (AUDIO_DEVICE_OUT_EARPIECE |
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AUDIO_DEVICE_OUT_SPEAKER |
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AUDIO_DEVICE_OUT_WIRED_HEADSET |
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AUDIO_DEVICE_OUT_WIRED_HEADPHONE |
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AUDIO_DEVICE_OUT_BLUETOOTH_SCO |
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AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET |
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AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT |
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AUDIO_DEVICE_OUT_BLUETOOTH_A2DP |
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AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
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AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER |
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AUDIO_DEVICE_OUT_AUX_DIGITAL |
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AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET |
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AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET |
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AUDIO_DEVICE_OUT_DEFAULT),
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AUDIO_DEVICE_OUT_ALL_A2DP = (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP |
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AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
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AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER),
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AUDIO_DEVICE_OUT_ALL_SCO = (AUDIO_DEVICE_OUT_BLUETOOTH_SCO |
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AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET |
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AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT),
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/* input devices */
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AUDIO_DEVICE_IN_COMMUNICATION = 0x10000,
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AUDIO_DEVICE_IN_AMBIENT = 0x20000,
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AUDIO_DEVICE_IN_BUILTIN_MIC = 0x40000,
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AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET = 0x80000,
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AUDIO_DEVICE_IN_WIRED_HEADSET = 0x100000,
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AUDIO_DEVICE_IN_AUX_DIGITAL = 0x200000,
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AUDIO_DEVICE_IN_VOICE_CALL = 0x400000,
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AUDIO_DEVICE_IN_BACK_MIC = 0x800000,
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AUDIO_DEVICE_IN_DEFAULT = 0x80000000,
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AUDIO_DEVICE_IN_ALL = (AUDIO_DEVICE_IN_COMMUNICATION |
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AUDIO_DEVICE_IN_AMBIENT |
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AUDIO_DEVICE_IN_BUILTIN_MIC |
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AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET |
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AUDIO_DEVICE_IN_WIRED_HEADSET |
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AUDIO_DEVICE_IN_AUX_DIGITAL |
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AUDIO_DEVICE_IN_VOICE_CALL |
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AUDIO_DEVICE_IN_BACK_MIC |
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AUDIO_DEVICE_IN_DEFAULT),
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AUDIO_DEVICE_IN_ALL_SCO = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET,
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} audio_devices_t;
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static inline bool audio_is_output_device(audio_devices_t device)
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{
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if ((popcount(device) == 1) && ((device & ~AUDIO_DEVICE_OUT_ALL) == 0))
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return true;
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else
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return false;
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}
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static inline bool audio_is_input_device(audio_devices_t device)
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{
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if ((popcount(device) == 1) && ((device & ~AUDIO_DEVICE_IN_ALL) == 0))
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return true;
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else
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return false;
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}
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static inline bool audio_is_a2dp_device(audio_devices_t device)
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{
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if ((popcount(device) == 1) && (device & AUDIO_DEVICE_OUT_ALL_A2DP))
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return true;
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else
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return false;
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}
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static inline bool audio_is_bluetooth_sco_device(audio_devices_t device)
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{
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if ((popcount(device) == 1) && (device & (AUDIO_DEVICE_OUT_ALL_SCO |
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AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET)))
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return true;
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else
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return false;
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}
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static inline bool audio_is_input_channel(uint32_t channel)
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{
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if ((channel & ~AUDIO_CHANNEL_IN_ALL) == 0)
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return true;
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else
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return false;
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}
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static inline bool audio_is_output_channel(uint32_t channel)
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{
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if ((channel & ~AUDIO_CHANNEL_OUT_ALL) == 0)
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return true;
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else
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return false;
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}
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/* Derive a channel mask from a channel count.
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* This is to be used when the content channel mask is unknown. The 1, 2, 4, 5, 6, 7 and 8 channel
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* cases are mapped to the standard game/home-theater layouts, but note that 4 is mapped to quad,
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* and not stereo + FC + mono surround. A channel count of 3 is arbitrarily mapped to stereo + FC
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* for continuity with stereo.
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* Returns the matching channel mask, or 0 if the number of channels exceeds that of the
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* configurations for which a default channel mask is defined.
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*/
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static inline audio_channel_mask_t audio_channel_mask_from_count(uint32_t channel_count)
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{
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switch(channel_count) {
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case 1:
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return AUDIO_CHANNEL_OUT_MONO;
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case 2:
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return AUDIO_CHANNEL_OUT_STEREO;
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case 3:
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return (AUDIO_CHANNEL_OUT_STEREO | AUDIO_CHANNEL_OUT_FRONT_CENTER);
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case 4: // 4.0
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return AUDIO_CHANNEL_OUT_QUAD;
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case 5: // 5.0
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return (AUDIO_CHANNEL_OUT_QUAD | AUDIO_CHANNEL_OUT_FRONT_CENTER);
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case 6: // 5.1
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return AUDIO_CHANNEL_OUT_5POINT1;
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case 7: // 6.1
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return (AUDIO_CHANNEL_OUT_5POINT1 | AUDIO_CHANNEL_OUT_BACK_CENTER);
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case 8:
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return AUDIO_CHANNEL_OUT_7POINT1;
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default:
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return 0;
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}
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}
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static inline bool audio_is_valid_format(audio_format_t format)
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{
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switch (format & AUDIO_FORMAT_MAIN_MASK) {
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case AUDIO_FORMAT_PCM:
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if (format != AUDIO_FORMAT_PCM_16_BIT &&
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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
|