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Commit f3325844 authored by Bao Do's avatar Bao Do
Browse files

HFP Audio client - Encode and Offload implementation 

Bug: 294134504
Bug: 315234036
Test: mmm packages/modules/Bluetooth/system/audio_hal_interface
Change-Id: Ife8ceeae9c22367ee93a9d87279cbd14527cca39
parent a013cded

system/audio_hal_interface/Android.bp

+2 −0
Original line number Diff line number Diff line
@@ -44,9 +44,11 @@ cc_library_static { 
                "aidl/client_interface_aidl.cc",

                "aidl/codec_status_aidl.cc",

                "aidl/hearing_aid_software_encoding_aidl.cc",

                "aidl/hfp_client_interface_aidl.cc",

                "aidl/le_audio_software_aidl.cc",

                "hal_version_manager.cc",

                "hearing_aid_software_encoding.cc",

                "hfp_client_interface.cc",

                "hidl/a2dp_encoding_hidl.cc",

                "hidl/client_interface_hidl.cc",

                "hidl/codec_status_hidl.cc",

system/audio_hal_interface/hfp_client_interface.cc

+257 −3
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include "osi/include/properties.h"



using ::bluetooth::audio::aidl::hfp::HfpDecodingTransport;

using ::bluetooth::audio::aidl::hfp::HfpEncodingTransport;

using AudioConfiguration =

    ::aidl::android::hardware::bluetooth::audio::AudioConfiguration;

using ::aidl::android::hardware::bluetooth::audio::ChannelMode;
@@ -42,15 +43,24 @@ aidl::BluetoothAudioSinkClientInterface* get_decode_client_interface() { 
  return HfpDecodingTransport::active_hal_interface;

}



aidl::BluetoothAudioSourceClientInterface* get_encode_client_interface() {

  return HfpEncodingTransport::active_hal_interface;

}



HfpDecodingTransport* get_decode_transport_instance() {

  return HfpDecodingTransport::instance_;

}



HfpDecodingTransport* get_encode_transport_instance() {

  return HfpDecodingTransport::instance_;

}



PcmConfiguration get_default_pcm_configuration() {

  PcmConfiguration pcm_config{

      .sampleRateHz = 8000,

      .channelMode = ChannelMode::MONO,

      .bitsPerSample = 16,

      .dataIntervalUs = 7500,

  };

  return pcm_config;

}
@@ -96,6 +106,23 @@ bool is_aidl_support_hfp() { 
             BluetoothAudioHalVersion::VERSION_AIDL_V4;

}



// Parent client implementation

HfpClientInterface* HfpClientInterface::interface = nullptr;

HfpClientInterface* HfpClientInterface::Get() {

  if (!is_hal_enabled()) {

    LOG(ERROR) << __func__ << ": BluetoothAudio HAL is disabled";

    return nullptr;

  }

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return nullptr;

  }

  if (HfpClientInterface::interface == nullptr) {

    HfpClientInterface::interface = new HfpClientInterface();

  }

  return HfpClientInterface::interface;

}



// Decode client implementation

void HfpClientInterface::Decode::Cleanup() {

  LOG(INFO) << __func__ << " decode";
@@ -144,9 +171,10 @@ void HfpClientInterface::Decode::UpdateAudioConfigToHal( 
    return;

  }



  LOG(INFO) << __func__ << " decode";

  get_decode_client_interface()->UpdateAudioConfig(

      offload_config_to_hal_audio_config(offload_config));

  LOG(WARNING)

      << __func__

      << " decode - Unsupported update audio config for software session";

  return;

}



size_t HfpClientInterface::Decode::Read(uint8_t* p_buf, uint32_t len) {
@@ -184,6 +212,7 @@ HfpClientInterface::Decode* HfpClientInterface::GetDecode( 
    delete HfpDecodingTransport::software_hal_interface;

    HfpDecodingTransport::software_hal_interface = nullptr;

    delete HfpDecodingTransport::instance_;

    HfpDecodingTransport::instance_ = nullptr;

    return nullptr;

  }
@@ -208,6 +237,231 @@ bool HfpClientInterface::ReleaseDecode(HfpClientInterface::Decode* decode) { 
  return true;

}



// Encoding client implementation

void HfpClientInterface::Encode::Cleanup() {

  LOG(INFO) << __func__ << " encode";

  StopSession();

  if (HfpEncodingTransport::instance_) {

    delete HfpEncodingTransport::software_hal_interface;

    HfpEncodingTransport::software_hal_interface = nullptr;

    delete HfpEncodingTransport::instance_;

    HfpEncodingTransport::instance_ = nullptr;

  }

}



void HfpClientInterface::Encode::StartSession() {

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return;

  }

  LOG(INFO) << __func__ << " encode";

  AudioConfiguration audio_config;

  audio_config.set<AudioConfiguration::pcmConfig>(

      get_default_pcm_configuration());

  if (!get_encode_client_interface()->UpdateAudioConfig(audio_config)) {

    LOG(ERROR) << __func__ << ": cannot update audio config to HAL";

    return;

  }

  get_encode_client_interface()->StartSession();

}



void HfpClientInterface::Encode::StopSession() {

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return;

  }

  LOG(INFO) << __func__ << " encode";

  get_encode_client_interface()->EndSession();

  if (get_encode_transport_instance()) {

    get_encode_transport_instance()->ResetPendingCmd();

    get_encode_transport_instance()->ResetPresentationPosition();

  }

}



void HfpClientInterface::Encode::UpdateAudioConfigToHal(

    const ::hfp::offload_config& offload_config) {

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return;

  }



  LOG(WARNING)

      << __func__

      << " encode - Unsupported update audio config for software session";

  return;

}



size_t HfpClientInterface::Encode::Write(const uint8_t* p_buf, uint32_t len) {

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return 0;

  }

  LOG(INFO) << __func__ << " encode";

  return get_encode_client_interface()->WriteAudioData(p_buf, len);

}



HfpClientInterface::Encode* HfpClientInterface::GetEncode(

    bluetooth::common::MessageLoopThread* message_loop) {

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return nullptr;

  }



  if (encode_ == nullptr) {

    encode_ = new Encode();

  } else {

    LOG(WARNING) << __func__ << ": Encoding is already acquired";

    return nullptr;

  }



  LOG(INFO) << __func__ << " encode";



  HfpEncodingTransport::instance_ = new HfpEncodingTransport(

      aidl::SessionType::HFP_SOFTWARE_ENCODING_DATAPATH);

  HfpEncodingTransport::software_hal_interface =

      new aidl::BluetoothAudioSourceClientInterface(

          HfpEncodingTransport::instance_, message_loop);

  if (!HfpEncodingTransport::software_hal_interface->IsValid()) {

    LOG(WARNING) << __func__ << ": BluetoothAudio HAL for HFP is invalid";

    delete HfpEncodingTransport::software_hal_interface;

    HfpEncodingTransport::software_hal_interface = nullptr;

    delete HfpEncodingTransport::instance_;

    HfpEncodingTransport::instance_ = nullptr;

    return nullptr;

  }



  HfpEncodingTransport::active_hal_interface =

      HfpEncodingTransport::software_hal_interface;



  return encode_;

}



bool HfpClientInterface::ReleaseEncode(HfpClientInterface::Encode* encode) {

  if (encode != encode_) {

    LOG(WARNING) << __func__ << ", can't release not acquired encode";

    return false;

  }



  if (get_encode_client_interface()) encode->Cleanup();



  delete encode_;

  encode_ = nullptr;



  return true;

}



// Offload client implementation

// Based on HfpEncodingTransport

void HfpClientInterface::Offload::Cleanup() {

  LOG(INFO) << __func__ << " offload";

  StopSession();

  if (HfpEncodingTransport::instance_) {

    delete HfpEncodingTransport::offloading_hal_interface;

    HfpEncodingTransport::offloading_hal_interface = nullptr;

    delete HfpEncodingTransport::instance_;

    HfpEncodingTransport::instance_ = nullptr;

  }

}



void HfpClientInterface::Offload::StartSession() {

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return;

  }

  LOG(INFO) << __func__ << " offload";

  AudioConfiguration audio_config;

  audio_config.set<AudioConfiguration::hfpConfig>(

      get_default_hfp_configuration());

  if (!get_encode_client_interface()->UpdateAudioConfig(audio_config)) {

    LOG(ERROR) << __func__ << ": cannot update audio config to HAL";

    return;

  }

  get_encode_client_interface()->StartSession();

}



void HfpClientInterface::Offload::StopSession() {

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return;

  }

  LOG(INFO) << __func__ << " offload";

  get_encode_client_interface()->EndSession();

  if (get_encode_transport_instance()) {

    get_encode_transport_instance()->ResetPendingCmd();

    get_encode_transport_instance()->ResetPresentationPosition();

  }

}



void HfpClientInterface::Offload::UpdateAudioConfigToHal(

    const ::hfp::offload_config& offload_config) {

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return;

  }



  LOG(INFO) << __func__ << " offload";

  get_encode_client_interface()->UpdateAudioConfig(

      offload_config_to_hal_audio_config(offload_config));

}



HfpClientInterface::Offload* HfpClientInterface::GetOffload(

    bluetooth::common::MessageLoopThread* message_loop) {

  if (!is_aidl_support_hfp()) {

    LOG(WARNING) << __func__ << ": Unsupported HIDL or AIDL version";

    return nullptr;

  }



  if (offload_ == nullptr) {

    offload_ = new Offload();

  } else {

    LOG(WARNING) << __func__ << ": Offload is already acquired";

    return nullptr;

  }



  LOG(INFO) << __func__ << " offload";



  // Prepare offload hal interface.

  if (bta_ag_get_sco_offload_enabled()) {

    HfpEncodingTransport::instance_ = new HfpEncodingTransport(

        aidl::SessionType::HFP_HARDWARE_OFFLOAD_DATAPATH);

    HfpEncodingTransport::offloading_hal_interface =

        new aidl::BluetoothAudioSourceClientInterface(

            HfpEncodingTransport::instance_, message_loop);

    if (!HfpEncodingTransport::offloading_hal_interface->IsValid()) {

      LOG(FATAL) << __func__

                 << ": BluetoothAudio HAL for HFP offloading is invalid";

      delete HfpEncodingTransport::offloading_hal_interface;

      HfpEncodingTransport::offloading_hal_interface = nullptr;

      delete HfpEncodingTransport::instance_;

      HfpEncodingTransport::instance_ = static_cast<HfpEncodingTransport*>(

          HfpEncodingTransport::software_hal_interface->GetTransportInstance());

      delete HfpEncodingTransport::software_hal_interface;

      HfpEncodingTransport::software_hal_interface = nullptr;

      delete HfpEncodingTransport::instance_;

      return nullptr;

    }

  }



  HfpEncodingTransport::active_hal_interface =

      HfpEncodingTransport::offloading_hal_interface;



  return offload_;

}



bool HfpClientInterface::ReleaseOffload(HfpClientInterface::Offload* offload) {

  if (offload != offload_) {

    LOG(WARNING) << __func__ << ", can't release not acquired offload";

    return false;

  }



  if (get_encode_client_interface()) offload->Cleanup();



  delete offload_;

  offload_ = nullptr;



  return true;

}



}  // namespace hfp

}  // namespace audio

}  // namespace bluetooth

system/audio_hal_interface/hfp_client_interface.h

+6 −2
Original line number Diff line number Diff line
@@ -23,6 +23,10 @@ namespace bluetooth { 
namespace audio {

namespace hfp {



/*

 * Client interface for HFP.

 * Only available if HFP is managed by AIDL sessions

 */

class HfpClientInterface {

 private:

  class IClientInterfaceEndpoint {
@@ -82,9 +86,9 @@ class HfpClientInterface { 
  bool ReleaseEncode(Encode* encode);



  // Get HFP offload client interface

  Offload GetOffload(bluetooth::common::MessageLoopThread* message_loop);

  Offload* GetOffload(bluetooth::common::MessageLoopThread* message_loop);

  // Release offload interface if belongs to HFP client interface

  bool ReleaseOffload(Encode* encode);

  bool ReleaseOffload(Offload* offload);



  // Get interface, if previously not initialized - it'll initialize singleton.

  static HfpClientInterface* Get();