blob: 28fab53a8e08260f62832c2ccc0ff65bcf218f89 [file] [log] [blame]
// Copyright 2019 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <iio.h>
#include <map>
#include <memory>
#include <string>
#include <vector>
#include <base/optional.h>
#include "libmems/export.h"
#include "libmems/iio_device.h"
namespace libmems {
class IioChannelImpl;
class IioContext;
class IioContextImpl;
class LIBMEMS_EXPORT IioDeviceImpl : public IioDevice {
static base::Optional<int> GetIdFromString(const char* id_str);
static std::string GetStringFromId(int id);
// iio_device objects are kept alive by the IioContextImpl.
IioDeviceImpl(IioContextImpl* ctx, iio_device* dev);
IioDeviceImpl(const IioDeviceImpl&) = delete;
IioDeviceImpl& operator=(const IioDeviceImpl&) = delete;
~IioDeviceImpl() override = default;
IioContext* GetContext() const override;
const char* GetName() const override;
int GetId() const override;
base::FilePath GetPath() const override;
base::Optional<std::string> ReadStringAttribute(
const std::string& name) const override;
base::Optional<int64_t> ReadNumberAttribute(
const std::string& name) const override;
base::Optional<double> ReadDoubleAttribute(
const std::string& name) const override;
bool WriteStringAttribute(const std::string& name,
const std::string& value) override;
bool WriteNumberAttribute(const std::string& name, int64_t value) override;
bool WriteDoubleAttribute(const std::string& name, double value) override;
iio_device* GetUnderlyingIioDevice() const override;
bool SetTrigger(IioDevice* trigger_device) override;
IioDevice* GetTrigger() override;
base::Optional<size_t> GetSampleSize() const override;
bool EnableBuffer(size_t num) override;
bool DisableBuffer() override;
bool IsBufferEnabled(size_t* num = nullptr) const override;
base::Optional<int32_t> GetBufferFd() override;
base::Optional<IioSample> ReadSample() override;
base::TimeDelta GetPeriodForObsoleteSamplesInMilliseconds() override;
static void IioBufferDeleter(iio_buffer* buffer);
bool CreateBuffer();
IioSample DeserializeSample(const uint8_t* src);
IioContextImpl* context_; // non-owned
iio_device* const device_; // non-owned
using ScopedBuffer = std::unique_ptr<iio_buffer, decltype(&IioBufferDeleter)>;
ScopedBuffer buffer_;
std::string log_prefix_;
} // namespace libmems