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Commit | Line | Data |
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28a4c9c5 | 1 | /* |
b3f22de0 | 2 | * This file is part of the PulseView project. |
28a4c9c5 JH |
3 | * |
4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
efdec55a | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
28a4c9c5 JH |
18 | */ |
19 | ||
f3d66e52 | 20 | #include "segment.hpp" |
28a4c9c5 | 21 | |
f556bc6a JH |
22 | #include <assert.h> |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | ||
3b68d03d JH |
26 | using std::lock_guard; |
27 | using std::recursive_mutex; | |
7d29656f | 28 | |
51e77110 | 29 | namespace pv { |
1b1ec774 | 30 | namespace data { |
51e77110 | 31 | |
f3d66e52 | 32 | Segment::Segment(uint64_t samplerate, unsigned int unit_size) : |
8dbbc7f0 | 33 | sample_count_(0), |
7f4038d6 | 34 | start_time_(0), |
ff008de6 | 35 | samplerate_(samplerate), |
8dbbc7f0 JH |
36 | capacity_(0), |
37 | unit_size_(unit_size) | |
f556bc6a | 38 | { |
8dbbc7f0 JH |
39 | lock_guard<recursive_mutex> lock(mutex_); |
40 | assert(unit_size_ > 0); | |
f556bc6a JH |
41 | } |
42 | ||
f3d66e52 | 43 | Segment::~Segment() |
28a4c9c5 | 44 | { |
8dbbc7f0 | 45 | lock_guard<recursive_mutex> lock(mutex_); |
28a4c9c5 JH |
46 | } |
47 | ||
f3d66e52 | 48 | uint64_t Segment::get_sample_count() const |
28a4c9c5 | 49 | { |
8dbbc7f0 JH |
50 | lock_guard<recursive_mutex> lock(mutex_); |
51 | return sample_count_; | |
f556bc6a JH |
52 | } |
53 | ||
60d9b99a | 54 | const pv::util::Timestamp& Segment::start_time() const |
7f4038d6 JH |
55 | { |
56 | return start_time_; | |
57 | } | |
58 | ||
f3d66e52 | 59 | double Segment::samplerate() const |
ff008de6 JH |
60 | { |
61 | return samplerate_; | |
62 | } | |
63 | ||
f3d66e52 | 64 | void Segment::set_samplerate(double samplerate) |
ff008de6 JH |
65 | { |
66 | samplerate_ = samplerate; | |
67 | } | |
68 | ||
f3d66e52 | 69 | unsigned int Segment::unit_size() const |
6fd14a32 | 70 | { |
8dbbc7f0 | 71 | return unit_size_; |
6fd14a32 JH |
72 | } |
73 | ||
f3d66e52 | 74 | void Segment::set_capacity(const uint64_t new_capacity) |
27d7c96b | 75 | { |
8dbbc7f0 | 76 | lock_guard<recursive_mutex> lock(mutex_); |
27d7c96b | 77 | |
8dbbc7f0 JH |
78 | assert(capacity_ >= sample_count_); |
79 | if (new_capacity > capacity_) { | |
e7216ae0 | 80 | // If we're out of memory, this will throw std::bad_alloc |
8dbbc7f0 | 81 | data_.resize((new_capacity * unit_size_) + sizeof(uint64_t)); |
e7216ae0 | 82 | capacity_ = new_capacity; |
27d7c96b DK |
83 | } |
84 | } | |
85 | ||
f3d66e52 | 86 | uint64_t Segment::capacity() const |
27d7c96b | 87 | { |
8dbbc7f0 JH |
88 | lock_guard<recursive_mutex> lock(mutex_); |
89 | return data_.size(); | |
27d7c96b DK |
90 | } |
91 | ||
f3d66e52 | 92 | void Segment::append_data(void *data, uint64_t samples) |
f556bc6a | 93 | { |
8dbbc7f0 | 94 | lock_guard<recursive_mutex> lock(mutex_); |
27d7c96b | 95 | |
8dbbc7f0 | 96 | assert(capacity_ >= sample_count_); |
27d7c96b DK |
97 | |
98 | // Ensure there's enough capacity to copy. | |
8dbbc7f0 | 99 | const uint64_t free_space = capacity_ - sample_count_; |
2ad82c2e | 100 | if (free_space < samples) |
8dbbc7f0 | 101 | set_capacity(sample_count_ + samples); |
27d7c96b | 102 | |
8dbbc7f0 JH |
103 | memcpy((uint8_t*)data_.data() + sample_count_ * unit_size_, |
104 | data, samples * unit_size_); | |
105 | sample_count_ += samples; | |
28a4c9c5 | 106 | } |
51e77110 | 107 | |
1b1ec774 | 108 | } // namespace data |
51e77110 | 109 | } // namespace pv |