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Add Hardware Offloaded provider parameters for LC3 am: e5611aa5c6 am: 3d79c11c2b

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

Change-Id: Ieb58daf3d45c3d48ec25eee40148c3975bf3e9b6
This commit is contained in:
Jakub Pawlowski 2021-03-18 22:41:51 +00:00 committed by Automerger Merge Worker
commit faf5896a8b
1 changed files with 57 additions and 9 deletions
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66
bluetooth/audio/2.1/types.hal
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@ -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;
};