39 |
41 |
40 namespace relpipe { |
42 namespace relpipe { |
41 namespace out { |
43 namespace out { |
42 namespace jack { |
44 namespace jack { |
43 |
45 |
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46 int dequeueMessages(jack_nframes_t frames, void* arg); |
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47 |
44 class JackHandler : public relpipe::reader::handlers::RelationalReaderStringHandler { |
48 class JackHandler : public relpipe::reader::handlers::RelationalReaderStringHandler { |
45 private: |
49 private: |
46 Configuration& configuration; |
50 Configuration& configuration; |
47 std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: local system encoding |
51 std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: local system encoding |
48 |
52 |
49 jack_client_t* jackClient = nullptr; |
53 jack_client_t* jackClient = nullptr; |
50 jack_port_t* jackPort = nullptr; |
54 jack_port_t* jackPort = nullptr; |
51 //jack_ringbuffer_t* ringBuffer = nullptr; |
55 jack_ringbuffer_t* ringBuffer = nullptr; |
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56 |
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57 std::atomic<bool> continueProcessing{true}; |
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58 |
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59 const int RING_BUFFER_SIZE = 100; |
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60 |
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61 struct MidiMessage { |
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62 uint8_t buffer[4096]; |
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63 uint32_t size; |
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64 uint32_t time; |
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65 }; |
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66 |
52 public: |
67 public: |
53 |
68 |
54 JackHandler(Configuration& configuration) : configuration(configuration) { |
69 JackHandler(Configuration& configuration) : configuration(configuration) { |
55 // Initialize JACK connection: |
70 // Initialize JACK connection: |
56 std::string clientName = convertor.to_bytes(configuration.jackClientName); |
71 std::string clientName = convertor.to_bytes(configuration.jackClientName); |
57 jackClient = jack_client_open(clientName.c_str(), JackNullOption, nullptr); |
72 jackClient = jack_client_open(clientName.c_str(), JackNullOption, nullptr); |
58 if (jackClient == nullptr) throw JackException(L"Could not create JACK client."); |
73 if (jackClient == nullptr) throw JackException(L"Could not create JACK client."); |
59 |
74 |
60 //ringBuffer = jack_ringbuffer_create(RING_BUFFER_SIZE * sizeof (MidiMessage)); |
75 ringBuffer = jack_ringbuffer_create(RING_BUFFER_SIZE * sizeof (MidiMessage)); |
61 |
76 |
62 //jack_set_process_callback(jackClient, relpipe::in::jack::enqueueMessage, this); |
77 jack_set_process_callback(jackClient, relpipe::out::jack::dequeueMessages, this); |
63 // TODO: report also other events (connections etc.) |
78 // TODO: report also other events (connections etc.) |
64 |
79 |
65 jackPort = jack_port_register(jackClient, "output", JACK_DEFAULT_MIDI_TYPE, JackPortIsOutput, 0); |
80 jackPort = jack_port_register(jackClient, "output", JACK_DEFAULT_MIDI_TYPE, JackPortIsOutput, 0); |
66 if (jackPort == nullptr) throw JackException(L"Could not register port."); |
81 if (jackPort == nullptr) throw JackException(L"Could not register port."); |
67 |
82 |
70 int jackError = jack_activate(jackClient); |
85 int jackError = jack_activate(jackClient); |
71 if (jackError) throw JackException(L"Could not activate client."); |
86 if (jackError) throw JackException(L"Could not activate client."); |
72 } |
87 } |
73 |
88 |
74 void startRelation(const relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override { |
89 void startRelation(const relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override { |
75 |
90 // TODO: validate metadata and prepare attribute mappings (names and types are important, order does not matter) |
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91 |
76 } |
92 } |
77 |
93 |
78 void attribute(const relpipe::common::type::StringX& value) override { |
94 void attribute(const relpipe::common::type::StringX& value) override { |
79 |
95 // TODO: append to current message + if this is last attribute, put whole message to the ring buffer |
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96 // TODO: if (continueProcessing) {} ? |
80 } |
97 } |
81 |
98 |
82 void endOfPipe() { |
99 void endOfPipe() { |
83 |
100 // TODO: send optional (configurable) MIDI events |
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101 // TODO: wait until the ring buffer is empty |
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102 } |
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103 |
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104 int dequeueMessages(jack_nframes_t frames) { |
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105 |
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106 |
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107 // TODO: send events from the ring buffer to JACK + correct timing |
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108 std::cout << "dequeueMessages(" << frames << ")" << std::endl; |
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109 |
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110 |
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111 return 0; |
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112 } |
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113 |
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114 void finish(int sig) { |
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115 continueProcessing = false; |
84 } |
116 } |
85 |
117 |
86 virtual ~JackHandler() { |
118 virtual ~JackHandler() { |
87 // Close JACK connection: |
119 // Close JACK connection: |
88 jack_deactivate(jackClient); |
120 jack_deactivate(jackClient); |
89 jack_client_close(jackClient); |
121 jack_client_close(jackClient); |
90 //jack_ringbuffer_free(ringBuffer); |
122 jack_ringbuffer_free(ringBuffer); |
91 } |
123 } |
92 |
124 |
93 }; |
125 }; |
94 |
126 |
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127 int dequeueMessages(jack_nframes_t frames, void* arg) { |
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128 JackHandler* instance = (JackHandler*) arg; |
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129 return instance->dequeueMessages(frames); |
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130 } |
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131 |
95 } |
132 } |
96 } |
133 } |
97 } |
134 } |