21 #include "JackSystemDeps.h"
22 #include "JackLoopbackDriver.h"
23 #include "JackDriverLoader.h"
24 #include "JackEngineControl.h"
25 #include "JackGraphManager.h"
26 #include "JackError.h"
35 int JackLoopbackDriver::ProcessReadSync()
40 for (
int i = 0; i < fCaptureChannels; i++) {
41 memcpy(GetInputBuffer(i), GetOutputBuffer(i),
sizeof(jack_default_audio_sample_t) * fEngineControl->fBufferSize);
45 if (ResumeRefNum() < 0) {
46 jack_error(
"JackLoopbackDriver::ProcessReadSync - ResumeRefNum error");
53 int JackLoopbackDriver::ProcessWriteSync()
56 if (SuspendRefNum() < 0) {
57 jack_error(
"JackLoopbackDriver::ProcessWriteSync SuspendRefNum error");
63 int JackLoopbackDriver::ProcessReadAsync()
68 for (
int i = 0; i < fCaptureChannels; i++) {
69 memcpy(GetInputBuffer(i), GetOutputBuffer(i),
sizeof(jack_default_audio_sample_t) * fEngineControl->fBufferSize);
73 if (ResumeRefNum() < 0) {
74 jack_error(
"JackLoopbackDriver::ProcessReadAsync - ResumeRefNum error");
81 int JackLoopbackDriver::ProcessWriteAsync()
99 desc = jack_driver_descriptor_construct(
"loopback", JackDriverSlave,
"Loopback backend", &filler);
102 jack_driver_descriptor_add_parameter(desc, &filler,
"channels",
'c', JackDriverParamInt, &value, NULL,
"Maximum number of loopback ports", NULL);
113 for (node = params; node; node = jack_slist_next (node)) {
116 switch (param->character) {
119 channels = param->value.ui;
125 if (driver->Open(1, 1, channels, channels,
false,
"loopback",
"loopback", 0, 0) == 0) {
Inter process synchronization using using Mach semaphore.
Locked Engine, access to methods is serialized using a mutex.
SERVER_EXPORT void jack_error(const char *fmt,...)
The base interface for drivers clients.
The loopback driver : to be used to "pipeline" applications connected in sequence.