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Commit 9cd13df0 authored by Jakub Pawlowski's avatar Jakub Pawlowski Committed by Automerger Merge Worker
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Add Hardware Offloaded provider parameters for LC3 am: e5611aa5 am:... 

Add Hardware Offloaded provider parameters for LC3 am: e5611aa5 am: 3d79c11c am: faf5896a am: 7fc89deb

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1490526

Change-Id: Ie5c2b1b5e5ac4f450c2cdebf409f1b38b790fef4
parents b240eb98 7fc89deb

bluetooth/audio/2.1/types.hal

+57 −9
Original line number Diff line number Diff line
@@ -16,13 +16,14 @@ 


package android.hardware.bluetooth.audio@2.1;



import @2.0::PcmParameters;

import @2.0::SessionType;

import @2.0::SampleRate;

import @2.0::ChannelMode;

import @2.0::BitsPerSample;

import @2.0::CodecConfiguration;

import @2.0::ChannelMode;

import @2.0::CodecCapabilities;

import @2.0::CodecConfiguration;

import @2.0::CodecType;

import @2.0::PcmParameters;

import @2.0::SampleRate;

import @2.0::SessionType;



enum SessionType : @2.0::SessionType {

    /** Used when encoded by Bluetooth Stack and streaming to LE Audio device */
@@ -35,6 +36,10 @@ enum SessionType : @2.0::SessionType { 
    LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH,

};



enum CodecType : @2.0::CodecType {

    LC3 = 0x20,

};



enum SampleRate : @2.0::SampleRate {

    RATE_8000 = 0x100,

    RATE_32000 = 0x200,
@@ -49,14 +54,57 @@ struct PcmParameters { 
    uint32_t dataIntervalUs;

};



/** Used to configure either a Hardware or Software Encoding session based on session type */

safe_union AudioConfiguration {

    PcmParameters pcmConfig;

    CodecConfiguration codecConfig;

enum Lc3FrameDuration : uint8_t {

    DURATION_10000US = 0x00,

    DURATION_7500US = 0x01,

};



/**

 * Used for Hardware Encoding/Decoding LC3 codec parameters.

 */

struct Lc3Parameters {

    /* PCM is Input for encoder, Output for decoder */

    BitsPerSample pcmBitDepth;



    /* codec-specific parameters */

    SampleRate samplingFrequency;

    Lc3FrameDuration frameDuration;

    /* length in octets of a codec frame */

    uint32_t octetsPerFrame;

    /* Number of blocks of codec frames per single SDU (Service Data Unit) */

    uint8_t blocksPerSdu;

};



/**

 * Used to specify the capabilities of the LC3 codecs supported by Hardware Encoding.

 */

struct Lc3CodecCapabilities {

    /* This is bitfield, if bit N is set, HW Offloader supports N+1 channels at the same time.

     * Example: 0x27 = 0b00100111: One, two, three or six channels supported.*/

    uint8_t supportedChannelCounts;

    Lc3Parameters lc3Capabilities;

};



/** Used to specify the capabilities of the different session types */

safe_union AudioCapabilities {

    PcmParameters pcmCapabilities;

    CodecCapabilities codecCapabilities;

    Lc3CodecCapabilities leAudioCapabilities;

};



/**

 * Used to configure a LC3 Hardware Encoding session.

 */

struct Lc3CodecConfiguration {

    /* This is also bitfield, specifying how the channels are ordered in the outgoing media packet.

     * Bit meaning is defined in Bluetooth Assigned Numbers. */

    uint32_t audioChannelAllocation;

    Lc3Parameters lc3Config;

};



/** Used to configure either a Hardware or Software Encoding session based on session type */

safe_union AudioConfiguration {

    PcmParameters pcmConfig;

    CodecConfiguration codecConfig;

    Lc3CodecConfiguration leAudioCodecConfig;

};
 
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