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Enrico Granata60a818d2019-05-09 09:56:09 -07001// Copyright 2019 The Chromium OS Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
Enrico Granata51cdb942019-06-18 16:40:17 -07005#ifndef LIBMEMS_IIO_DEVICE_IMPL_H_
6#define LIBMEMS_IIO_DEVICE_IMPL_H_
Enrico Granata60a818d2019-05-09 09:56:09 -07007
8#include <iio.h>
9
10#include <map>
11#include <memory>
12#include <string>
Harvey Yangc0d19d82019-07-01 12:17:34 +080013#include <vector>
Enrico Granata60a818d2019-05-09 09:56:09 -070014
15#include <base/optional.h>
16
Enrico Granata51cdb942019-06-18 16:40:17 -070017#include "libmems/export.h"
18#include "libmems/iio_device.h"
Enrico Granata60a818d2019-05-09 09:56:09 -070019
Enrico Granata51cdb942019-06-18 16:40:17 -070020namespace libmems {
Enrico Granata60a818d2019-05-09 09:56:09 -070021
22class IioChannelImpl;
23class IioContext;
24class IioContextImpl;
25
Enrico Granata51cdb942019-06-18 16:40:17 -070026class LIBMEMS_EXPORT IioDeviceImpl : public IioDevice {
Enrico Granata60a818d2019-05-09 09:56:09 -070027 public:
Harvey Yang9260b662019-08-12 15:48:03 +080028 static base::Optional<int> GetIdFromString(const char* id_str);
29 static std::string GetStringFromId(int id);
30
Enrico Granata60a818d2019-05-09 09:56:09 -070031 // iio_device objects are kept alive by the IioContextImpl.
32 IioDeviceImpl(IioContextImpl* ctx, iio_device* dev);
33 ~IioDeviceImpl() override = default;
34
35 IioContext* GetContext() const override;
36
37 const char* GetName() const override;
Harvey Yang9260b662019-08-12 15:48:03 +080038 int GetId() const override;
Enrico Granata60a818d2019-05-09 09:56:09 -070039
40 base::FilePath GetPath() const override;
41
42 base::Optional<std::string> ReadStringAttribute(
43 const std::string& name) const override;
44 base::Optional<int64_t> ReadNumberAttribute(
45 const std::string& name) const override;
Enrico Granatad2e57f42019-07-31 10:46:03 -070046 base::Optional<double> ReadDoubleAttribute(
47 const std::string& name) const override;
Enrico Granata60a818d2019-05-09 09:56:09 -070048
49 bool WriteStringAttribute(const std::string& name,
50 const std::string& value) override;
51 bool WriteNumberAttribute(const std::string& name, int64_t value) override;
Enrico Granatad2e57f42019-07-31 10:46:03 -070052 bool WriteDoubleAttribute(const std::string& name, double value) override;
Enrico Granata60a818d2019-05-09 09:56:09 -070053
54 iio_device* GetUnderlyingIioDevice() const override;
55
56 bool SetTrigger(IioDevice* trigger_device) override;
57 IioDevice* GetTrigger() override;
58
59 IioChannel* GetChannel(const std::string& name) override;
60
Harvey Yangc0d19d82019-07-01 12:17:34 +080061 base::Optional<size_t> GetSampleSize() const override;
62
Enrico Granata60a818d2019-05-09 09:56:09 -070063 bool EnableBuffer(size_t num) override;
64 bool DisableBuffer() override;
65 bool IsBufferEnabled(size_t* num = nullptr) const override;
66
Harvey Yang75452e82019-10-02 16:57:01 +080067 bool ReadEvent(std::vector<uint8_t>* event) override;
Harvey Yangc0d19d82019-07-01 12:17:34 +080068
Enrico Granata60a818d2019-05-09 09:56:09 -070069 private:
Harvey Yangc0d19d82019-07-01 12:17:34 +080070 static void IioBufferDeleter(iio_buffer* buffer);
71
Harvey Yang75452e82019-10-02 16:57:01 +080072 bool CreateBuffer();
Harvey Yangc0d19d82019-07-01 12:17:34 +080073
Enrico Granata60a818d2019-05-09 09:56:09 -070074 IioContextImpl* context_; // non-owned
75 iio_device* const device_; // non-owned
Harvey Yangc0d19d82019-07-01 12:17:34 +080076
77 using ScopedBuffer = std::unique_ptr<iio_buffer, decltype(&IioBufferDeleter)>;
78 ScopedBuffer buffer_;
79
Enrico Granata60a818d2019-05-09 09:56:09 -070080 std::map<std::string, std::unique_ptr<IioChannelImpl>> channels_;
81 DISALLOW_COPY_AND_ASSIGN(IioDeviceImpl);
82};
83
Enrico Granata51cdb942019-06-18 16:40:17 -070084} // namespace libmems
Enrico Granata60a818d2019-05-09 09:56:09 -070085
Enrico Granata51cdb942019-06-18 16:40:17 -070086#endif // LIBMEMS_IIO_DEVICE_IMPL_H_