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572e76fe UH |
1 | /* |
2 | * This file is part of the libsigrokflow project. | |
3 | * | |
4 | * Copyright (C) 2018 Uwe Hermann <uwe@hermann-uwe.de> | |
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 3 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 | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include <libsigrokflow/libsigrokflow.hpp> | |
22 | ||
f7363af1 ML |
23 | #include <iostream> |
24 | ||
b903bb0a UH |
25 | namespace Srf |
26 | { | |
27 | ||
f7363af1 | 28 | using namespace std; |
d03b3a98 | 29 | using namespace std::placeholders; |
f7363af1 | 30 | |
b903bb0a UH |
31 | void init() |
32 | { | |
33 | } | |
34 | ||
d03b3a98 ML |
35 | auto src_template = Gst::PadTemplate::create("src", |
36 | Gst::PAD_SRC, | |
37 | Gst::PAD_ALWAYS, | |
38 | Gst::Caps::create_any()); | |
39 | ||
40 | LegacyCaptureDevice::LegacyCaptureDevice(shared_ptr<sigrok::HardwareDevice> device) : | |
41 | _device(device), _src_pad(Gst::Pad::create(src_template)) | |
f7363af1 | 42 | { |
d03b3a98 | 43 | add_pad(_src_pad); |
f7363af1 ML |
44 | } |
45 | ||
d03b3a98 | 46 | shared_ptr<sigrok::HardwareDevice> LegacyCaptureDevice::libsigrok_device() |
f7363af1 ML |
47 | { |
48 | return _device; | |
49 | } | |
50 | ||
d03b3a98 ML |
51 | Gst::StateChangeReturn LegacyCaptureDevice::change_state_vfunc(Gst::StateChange transition) |
52 | { | |
53 | switch (transition) | |
54 | { | |
55 | case Gst::STATE_CHANGE_READY_TO_PAUSED: | |
56 | return Gst::StateChangeReturn::STATE_CHANGE_NO_PREROLL; | |
57 | case Gst::STATE_CHANGE_PAUSED_TO_PLAYING: | |
58 | _device->open(); | |
59 | _device->config_set(sigrok::ConfigKey::LIMIT_SAMPLES, | |
60 | Glib::Variant<int>::create(10)); | |
61 | _task = Gst::Task::create(std::bind(&LegacyCaptureDevice::_run, this)); | |
62 | _task->set_lock(_mutex); | |
63 | _src_pad->set_active(true); | |
64 | _task->start(); | |
65 | return Gst::STATE_CHANGE_SUCCESS; | |
66 | default: | |
67 | return Gst::STATE_CHANGE_SUCCESS; | |
68 | } | |
69 | } | |
70 | ||
71 | void LegacyCaptureDevice::_datafeed_callback( | |
72 | shared_ptr<sigrok::Device> device, | |
73 | shared_ptr<sigrok::Packet> packet) | |
74 | { | |
75 | (void) device; | |
76 | switch (packet->type()->id()) { | |
77 | case SR_DF_LOGIC: | |
78 | { | |
79 | auto logic = static_pointer_cast<sigrok::Logic>(packet->payload()); | |
80 | auto mem = Gst::Memory::create( | |
81 | Gst::MEMORY_FLAG_READONLY, | |
82 | logic->data_pointer(), | |
83 | logic->data_length(), | |
84 | 0, | |
85 | logic->data_length()); | |
86 | auto buf = Gst::Buffer::create(); | |
87 | buf->append_memory(move(mem)); | |
88 | _src_pad->push(move(buf)); | |
89 | break; | |
90 | } | |
91 | case SR_DF_END: | |
92 | _session->stop(); | |
93 | _src_pad->push_event(Gst::EventEos::create()); | |
94 | break; | |
95 | default: | |
96 | break; | |
97 | } | |
98 | } | |
99 | ||
100 | void LegacyCaptureDevice::_run() | |
101 | { | |
102 | _session = _device->driver()->parent()->create_session(); | |
103 | _session->add_device(_device); | |
104 | _session->add_datafeed_callback(bind(&LegacyCaptureDevice::_datafeed_callback, this, _1, _2)); | |
105 | _session->start(); | |
106 | _session->run(); | |
107 | _task->stop(); | |
108 | } | |
109 | ||
b903bb0a | 110 | } |