[Pandora] - LDAC codec unit tests

        "a2dp/a2dp_vendor_opus_encoder.cc",

        "a2dp/a2dp_vendor_opus_decoder.cc",

        "test/a2dp/a2dp_aac_unittest.cc",

        "test/a2dp/a2dp_vendor_ldac_unittest.cc",

        "test/a2dp/mock_bta_av_codec.cc",

        "test/a2dp/test_util.cc",

        "test/a2dp/wav_reader.cc",

/*

 * Copyright 2022 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.

 */

#include "stack/include/a2dp_vendor_ldac.h"

#include <base/logging.h>

#include <gtest/gtest.h>

#include <stdio.h>

#include "common/testing/log_capture.h"

#include "common/time_util.h"

#include "osi/include/allocator.h"

#include "osi/test/AllocationTestHarness.h"

#include "stack/include/a2dp_vendor_ldac_constants.h"

#include "stack/include/avdt_api.h"

#include "stack/include/bt_hdr.h"

#include "test_util.h"

#include "wav_reader.h"

extern void allocation_tracker_uninit(void);

namespace {

constexpr uint32_t kA2dpTickUs = 23 * 1000;

constexpr char kWavFile[] = "test/a2dp/raw_data/pcm1644s.wav";

constexpr uint8_t kCodecInfoLdacCapability[AVDT_CODEC_SIZE] = {

    A2DP_LDAC_CODEC_LEN,

    AVDT_MEDIA_TYPE_AUDIO,

    A2DP_MEDIA_CT_NON_A2DP,

    0x2D,  // A2DP_LDAC_VENDOR_ID

    0x01,  // A2DP_LDAC_VENDOR_ID

    0x00,  // A2DP_LDAC_VENDOR_ID

    0x00,  // A2DP_LDAC_VENDOR_ID

    0xAA,  // A2DP_LDAC_CODEC_ID

    0x00,  // A2DP_LDAC_CODEC_ID,

    A2DP_LDAC_SAMPLING_FREQ_44100,

    A2DP_LDAC_CHANNEL_MODE_STEREO,

};

uint8_t* Data(BT_HDR* packet) { return packet->data + packet->offset; }

}  // namespace

namespace bluetooth {

namespace testing {

// static BT_HDR* packet = nullptr;

static WavReader wav_reader = WavReader(GetWavFilePath(kWavFile).c_str());

class A2dpLdacTest : public AllocationTestHarness {

 protected:

  void SetUp() override {

    AllocationTestHarness::SetUp();

    common::InitFlags::SetAllForTesting();

    // Disable our allocation tracker to allow ASAN full range

    allocation_tracker_uninit();

    SetCodecConfig();

    encoder_iface_ = const_cast<tA2DP_ENCODER_INTERFACE*>(

        A2DP_VendorGetEncoderInterfaceLdac(kCodecInfoLdacCapability));

    ASSERT_NE(encoder_iface_, nullptr);

    decoder_iface_ = const_cast<tA2DP_DECODER_INTERFACE*>(

        A2DP_VendorGetDecoderInterfaceLdac(kCodecInfoLdacCapability));

    ASSERT_NE(decoder_iface_, nullptr);

  }

  void TearDown() override {

    if (a2dp_codecs_ != nullptr) {

      delete a2dp_codecs_;

    }

    if (encoder_iface_ != nullptr) {

      encoder_iface_->encoder_cleanup();

    }

    if (decoder_iface_ != nullptr) {

      decoder_iface_->decoder_cleanup();

    }

    AllocationTestHarness::TearDown();

  }

// NOTE: Make a super func for all codecs

  void SetCodecConfig() {

    uint8_t source_codec_info_result[AVDT_CODEC_SIZE];

    btav_a2dp_codec_index_t peer_codec_index;

    a2dp_codecs_ = new A2dpCodecs(std::vector<btav_a2dp_codec_config_t>());

    ASSERT_TRUE(a2dp_codecs_->init());

    peer_codec_index = A2DP_SinkCodecIndex(kCodecInfoLdacCapability);

    ASSERT_NE(peer_codec_index, BTAV_A2DP_CODEC_INDEX_MAX);

    ASSERT_EQ(peer_codec_index, BTAV_A2DP_CODEC_INDEX_SINK_LDAC);

    source_codec_config_ =

        a2dp_codecs_->findSourceCodecConfig(kCodecInfoLdacCapability);

    ASSERT_NE(source_codec_config_, nullptr);

    ASSERT_TRUE(a2dp_codecs_->setCodecConfig(kCodecInfoLdacCapability, true,

                                                source_codec_info_result, true));

    ASSERT_EQ(a2dp_codecs_->getCurrentCodecConfig(), source_codec_config_);

    // Compare the result codec with the local test codec info

    for (size_t i = 0; i < kCodecInfoLdacCapability[0] + 1; i++) {

      ASSERT_EQ(source_codec_info_result[i], kCodecInfoLdacCapability[i]);

    }

    ASSERT_NE(source_codec_config_->getAudioBitsPerSample(), 0);

  }

  void InitializeEncoder(a2dp_source_read_callback_t read_cb,

                         a2dp_source_enqueue_callback_t enqueue_cb) {

    tA2DP_ENCODER_INIT_PEER_PARAMS peer_params = {true, true, 1000};

    encoder_iface_->encoder_init(&peer_params, source_codec_config_, read_cb,

                                 enqueue_cb);

  }

  void InitializeDecoder(decoded_data_callback_t data_cb) {

    decoder_iface_->decoder_init(data_cb);

  }

  BT_HDR* AllocateL2capPacket(const std::vector<uint8_t> data) const {

    auto packet = AllocatePacket(data.size());

    std::copy(data.cbegin(), data.cend(), Data(packet));

    return packet;

  }

  BT_HDR* AllocatePacket(size_t packet_length) const {

    BT_HDR* packet =

        static_cast<BT_HDR*>(osi_calloc(sizeof(BT_HDR) + packet_length));

    packet->len = packet_length;

    return packet;

  }

  A2dpCodecConfig* source_codec_config_;

  A2dpCodecs* a2dp_codecs_;

  tA2DP_ENCODER_INTERFACE* encoder_iface_;

  tA2DP_DECODER_INTERFACE* decoder_iface_;

  std::unique_ptr<LogCapture> log_capture_;

};

TEST_F(A2dpLdacTest, a2dp_source_read_underflow) {

  // log_capture_ = std::make_unique<LogCapture>();

  auto read_cb = +[](uint8_t* p_buf, uint32_t len) -> uint32_t {

    return 0;

  };

  auto enqueue_cb = +[](BT_HDR* p_buf, size_t frames_n, uint32_t len) -> bool {

    return false;

  };

  InitializeEncoder(read_cb, enqueue_cb);

  uint64_t timestamp_us = bluetooth::common::time_gettimeofday_us();

  encoder_iface_->send_frames(timestamp_us);

  usleep(kA2dpTickUs);

  timestamp_us = bluetooth::common::time_gettimeofday_us();

  encoder_iface_->send_frames(timestamp_us);

  std::promise<void> promise;

  // log_capture_->WaitUntilLogContains(&promise,

  //                                    "a2dp_ldac_encode_frames: underflow");

}

}  // namespace testing

}  //namespace bluetooth