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1 | /* |
2 | * This file is part of the libsigrokflow project. | |
3 | * | |
4 | * Copyright (C) 2018 Martin Ling <martin-sigrok@earth.li> | |
5 | * Copyright (C) 2018 Uwe Hermann <uwe@hermann-uwe.de> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include <libsigrokflow/libsigrokflow.hpp> | |
23 | ||
24 | namespace Srf | |
25 | { | |
26 | ||
27 | using namespace std; | |
28 | ||
29 | #ifdef HAVE_LIBSIGROKDECODE | |
30 | void LegacyDecoder::class_init(Gst::ElementClass<LegacyDecoder> *klass) | |
31 | { | |
32 | klass->set_metadata("sigrok legacy decoder", | |
33 | "Sink", "Wrapper for protocol decoders using legacy libsigrokdecode APIs", | |
34 | "Uwe Hermann"); | |
35 | ||
36 | klass->add_pad_template(Gst::PadTemplate::create( | |
37 | "sink", | |
38 | Gst::PAD_SINK, | |
39 | Gst::PAD_ALWAYS, | |
40 | Gst::Caps::create_any())); | |
41 | } | |
42 | ||
43 | bool LegacyDecoder::register_element(Glib::RefPtr<Gst::Plugin> plugin) | |
44 | { | |
45 | Gst::ElementFactory::register_element(plugin, "sigrok_legacy_decoder", | |
46 | 0, Gst::register_mm_type<LegacyDecoder>( | |
47 | "sigrok_legacy_decoder")); | |
48 | ||
49 | return true; | |
50 | } | |
51 | ||
52 | LegacyDecoder::LegacyDecoder(GstBaseSink *gobj) : | |
53 | Glib::ObjectBase(typeid(LegacyDecoder)), | |
54 | Sink(gobj) | |
55 | { | |
56 | } | |
57 | ||
58 | Glib::RefPtr<LegacyDecoder>LegacyDecoder::create( | |
59 | struct srd_session *libsigrokdecode_session, uint64_t unitsize) | |
60 | { | |
61 | auto element = Gst::ElementFactory::create_element("sigrok_legacy_decoder"); | |
62 | if (!element) | |
63 | throw runtime_error("Failed to create element - plugin not registered?"); | |
64 | auto decoder = Glib::RefPtr<LegacyDecoder>::cast_static(element); | |
65 | decoder->session_ = libsigrokdecode_session; | |
66 | decoder->unitsite_ = unitsize; | |
67 | ||
68 | return decoder; | |
69 | } | |
70 | ||
71 | struct srd_session *LegacyDecoder::libsigrokdecode_session() | |
72 | { | |
73 | return session_; | |
74 | } | |
75 | ||
76 | Gst::FlowReturn LegacyDecoder::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer) | |
77 | { | |
78 | Gst::MapInfo info; | |
79 | buffer->map(info, Gst::MAP_READ); | |
80 | uint64_t num_samples = info.get_size() / unitsite_; | |
81 | srd_session_send(session_, abs_ss_, abs_ss_ + num_samples, | |
82 | info.get_data(), info.get_size(), unitsite_); | |
83 | abs_ss_ += num_samples; | |
84 | buffer->unmap(info); | |
85 | ||
86 | return Gst::FLOW_OK; | |
87 | } | |
88 | ||
89 | bool LegacyDecoder::start_vfunc() | |
90 | { | |
91 | abs_ss_ = 0; | |
92 | srd_session_start(session_); | |
93 | ||
94 | return true; | |
95 | } | |
96 | ||
97 | bool LegacyDecoder::stop_vfunc() | |
98 | { | |
99 | srd_session_terminate_reset(session_); | |
100 | ||
101 | return true; | |
102 | } | |
103 | #endif | |
104 | ||
105 | } |