Snap for 7779164 from dc0f9b7a to sc-v2-release

//EL_FIXME 20 seconds may not be enough and must be reconciled with new obtainBuffer implementation

#define MAX_RUN_OFFLOADED_TIMEOUT_MS 20000 // assuming up to a maximum of 20 seconds of offloaded

// for audio_track_cblk_t::mState, to match TrackBase.h

static inline constexpr int CBLK_STATE_IDLE = 0;

static inline constexpr int CBLK_STATE_PAUSING = 7;

/**

 * MirroredVariable is a local variable which simultaneously updates

 * a mirrored storage location.  This is useful for server side variables

 * where a local copy is kept, but a client visible copy is offered through shared memory.

 *

 * We use std::atomic as the default container class to access this memory.

 */

template <typename T, template <typename> class Container = std::atomic>

class MirroredVariable {

    template <typename C>

    struct Constraints {

        // If setMirror is used with a different type U != T passed in,

        // as a general rule, the Container must issue a memcpy to read or write

        // (or its equivalent) to avoid possible strict aliasing issues.

        // The memcpy also avoids gaps in structs and alignment issues with different types.

        static constexpr bool ok_ = false;  // Containers must specify constraints.

    };

    template <typename X>

    struct Constraints<std::atomic<X>> {

        // Atomics force read and write to memory.

        static constexpr bool ok = std::is_same_v<X, T> ||

                (std::atomic<X>::is_always_lock_free                   // no additional locking

                && sizeof(std::atomic<X>) == sizeof(X)                 // layout identical to X.

                && (std::is_arithmetic_v<X> || std::is_enum_v<X>));    // No gaps in the layout.

    };

static_assert(Constraints<Container<T>>::ok);

public:

    explicit MirroredVariable(const T& t) : t_{t} {}

    // implicit conversion operator

    operator T() const {

        return t_;

    }

    MirroredVariable& operator=(const T& t) {

        t_ = t;

        if (mirror_ != nullptr) {

            *mirror_ = t;

        }

        return *this;

    }

    template <typename U>

    void setMirror(Container<U> *other_mirror) {

        // Much of the concern is with T != U, however there are additional concerns

        // when storage uses shared memory between processes.  For atomics, it must be

        // lock free.

        static_assert(sizeof(U) == sizeof(T));

        static_assert(alignof(U) == alignof(T));

        static_assert(Constraints<Container<U>>::ok);

        static_assert(sizeof(Container<U>) == sizeof(Container<T>));

        static_assert(alignof(Container<U>) == alignof(Container<T>));

        auto mirror = reinterpret_cast<Container<T>*>(other_mirror);

        if (mirror_ != mirror) {

            mirror_ = mirror;

            if (mirror != nullptr) {

                *mirror = t_;

            }

        }

    }

    void clear() {

        mirror_ = nullptr;

    }

    MirroredVariable& operator&() const = delete;

protected:

    T t_{};

    Container<T>* mirror_ = nullptr;

};

struct AudioTrackSharedStreaming {

    // similar to NBAIO MonoPipe

    // in continuously incrementing frame units, take modulo buffer size, which must be a power of 2

    volatile    int32_t     mFlags;         // combinations of CBLK_*

                std::atomic<int32_t>  mState; // current TrackBase state.

public:

                union {

                    AudioTrackSharedStreaming   mStreaming;

                // Cache line boundary (32 bytes)

};

// TODO: ensure standard layout.

// static_assert(std::is_standard_layout_v<audio_track_cblk_t>);

// ----------------------------------------------------------------------------

// Proxy for shared memory control block, to isolate callers from needing to know the details.

        return mEpoch;

    }

    int32_t getState() const { return mCblk->mState; }

    uint32_t      getBufferSizeInFrames() const { return mBufferSizeInFrames; }

    // See documentation for AudioTrack::setBufferSizeInFrames()

    uint32_t      setBufferSizeInFrames(uint32_t requestedSize);

TEST_P(Codec2VideoEncHidlTest, AdaptiveBitrateTest) {

    description("Encodes input file for different bitrates");

    if (mDisableTest) GTEST_SKIP() << "Test is disabled";

    if (mMime != "video/avc" && mMime != "video/hevc" && mMime != "video/x-vnd.on2.vp8" &&

        mMime != "video/x-vnd.on2.vp9") {

        GTEST_SKIP() << "AdaptiveBitrateTest is enabled only for avc, hevc, vp8 and vp9 encoders";

    }

    std::ifstream eleStream;

    eleStream.open(mInputFile, std::ifstream::binary);

#include <inttypes.h>

#include <math.h>

#include <sys/resource.h>

#include <thread>

#include <android/media/IAudioPolicyService.h>

#include <android-base/macros.h>

    mAudioTrack->flush();

}

bool AudioTrack::pauseAndWait(const std::chrono::milliseconds& timeout)

{

    using namespace std::chrono_literals;

    pause();

    AutoMutex lock(mLock);

    // offload and direct tracks do not wait because pause volume ramp is handled by hardware.

    if (isOffloadedOrDirect_l()) return true;

    // Wait for the track state to be anything besides pausing.

    // This ensures that the volume has ramped down.

    constexpr auto SLEEP_INTERVAL_MS = 10ms;

    auto begin = std::chrono::steady_clock::now();

    while (true) {

        // wait for state to change

        const int state = mProxy->getState();

        mLock.unlock(); // only local variables accessed until lock.

        auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(

                std::chrono::steady_clock::now() - begin);

        if (state != CBLK_STATE_PAUSING) {

            ALOGV("%s: success state:%d after %lld ms", __func__, state, elapsed.count());

            return true;

        }

        std::chrono::milliseconds remaining = timeout - elapsed;

        if (remaining.count() <= 0) {

            ALOGW("%s: timeout expired state:%d still pausing:%d after %lld ms",

                    __func__, state, CBLK_STATE_PAUSING, elapsed.count());

            return false;

        }

        // It is conceivable that the track is restored while sleeping;

        // as this logic is advisory, we allow that.

        std::this_thread::sleep_for(std::min(remaining, SLEEP_INTERVAL_MS));

        mLock.lock();

    }

}

void AudioTrack::pause()

{

    const int64_t beginNs = systemTime();

#include <utils/threads.h>

#include <android/content/AttributionSourceState.h>

#include <chrono>

#include <string>

#include "android/media/BnAudioTrackCallback.h"

     */

            void        pause();

    /* Pause and wait (with timeout) for the audio track to ramp to silence.

     *

     * \param timeout is the time limit to wait before returning.

     *                A negative number is treated as 0.

     * \return true if the track is ramped to silence, false if the timeout occurred.

     */

            bool        pauseAndWait(const std::chrono::milliseconds& timeout);

    /* Set volume for this track, mostly used for games' sound effects

     * left and right volumes. Levels must be >= 0.0 and <= 1.0.

     * This is the older API.  New applications should use setVolume(float) when possible.

    ],

    shared_libs: [

        "libheadtracking",

        "libandroid",

        "liblog",

        "libsensor",

        "libutils",

    ],

    export_shared_lib_headers: [

        "libheadtracking",

        "SensorPoseProvider-example.cpp",

    ],

    shared_libs: [

        "libandroid",

        "libheadtracking",

        "libheadtracking-binding",

        "libsensor",