diff options
Diffstat (limited to '3rdparty/portmidi/pm_test/multivirtual.c')
-rw-r--r-- | 3rdparty/portmidi/pm_test/multivirtual.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/3rdparty/portmidi/pm_test/multivirtual.c b/3rdparty/portmidi/pm_test/multivirtual.c new file mode 100644 index 00000000000..059bc50e4f9 --- /dev/null +++ b/3rdparty/portmidi/pm_test/multivirtual.c @@ -0,0 +1,224 @@ +/* multivirtual.c -- test for creating two input and two output virtual ports */ +/* + * Roger B. Dannenberg + * Oct 2021 + */ +#include "portmidi.h" +#include "porttime.h" +#include "stdlib.h" +#include "stdio.h" +#include "string.h" +#include "assert.h" + +#define OUTPUT_BUFFER_SIZE 0 +#define DEVICE_INFO NULL +#define DRIVER_INFO NULL +#define TIME_PROC ((PmTimeProcPtr) Pt_Time) +#define TIME_INFO NULL +#define TIME_START Pt_Start(1, 0, 0) /* timer started w/millisecond accuracy */ + +int latency = 0; + +static void prompt_and_exit(void) +{ + printf("type ENTER..."); + while (getchar() != '\n') ; + /* this will clean up open ports: */ + exit(-1); +} + + +static PmError checkerror(PmError err) +{ + if (err == pmHostError) { + /* it seems pointless to allocate memory and copy the string, + * so I will do the work of Pm_GetHostErrorText directly + */ + char errmsg[80]; + Pm_GetHostErrorText(errmsg, 80); + printf("PortMidi found host error...\n %s\n", errmsg); + prompt_and_exit(); + } else if (err < 0) { + printf("PortMidi call failed...\n %s\n", Pm_GetErrorText(err)); + prompt_and_exit(); + } + return err; +} + +static int msg_count[2] = {0, 0}; + +void poll_input(PmStream *in, int which) +{ + PmEvent buffer[1]; + int pitch, expected, length; + PmError status = Pm_Poll(in); + if (status == TRUE) { + length = Pm_Read(in, buffer, 1); + if (length > 0) { + printf("Got message %d from portmidi%d: " + "time %ld, %2x %2x %2x\n", + msg_count[which], which + 1, (long) buffer[0].timestamp, + (status = Pm_MessageStatus(buffer[0].message)), + (pitch = Pm_MessageData1(buffer[0].message)), + Pm_MessageData2(buffer[0].message)); + if (status == 0x90) { /* 1 & 2 are on/off 60, 3 & 4 are 61, etc. */ + expected = (((msg_count[which] - 1) / 2) % 12) + 60 + + which * 12; + if (pitch != expected) { + printf("WARNING: expected pitch %d, got pitch %d\n", + expected, pitch); + } + } + msg_count[which]++; + } else { + assert(0); + } + } +} + + +void wait_until(PmTimestamp when, PmStream *in1, PmStream *in2) +{ + while (when > Pt_Time()) { + poll_input(in1, 0); + poll_input(in2, 1); + Pt_Sleep(10); + } +} + + +/* create one virtual output device and one input device */ +void init(const char *name, PmStream **midi_out, PmStream **midi_in, + int *id_out, int *id_in) +{ + PmEvent buffer[1]; + + *id_out = checkerror(Pm_CreateVirtualOutput(name, NULL, DEVICE_INFO)); + checkerror(Pm_OpenOutput(midi_out, *id_out, DRIVER_INFO, OUTPUT_BUFFER_SIZE, + TIME_PROC, TIME_INFO, latency)); + printf("Virtual Output \"%s\" id %d created and opened.\n", name, *id_out); + + *id_in = checkerror(Pm_CreateVirtualInput(name, NULL, DRIVER_INFO)); + checkerror(Pm_OpenInput(midi_in, *id_in, NULL, 0, NULL, NULL)); + printf("Virtual Input \"%s\" id %d created and opened.\n", name, *id_in); + Pm_SetFilter(*midi_in, PM_FILT_ACTIVE | PM_FILT_CLOCK | PM_FILT_SYSEX); + /* empty the buffer after setting filter, just in case anything + got through */ + while (Pm_Read(*midi_in, buffer, 1)) ; +} + + +void main_test(int num) +{ + PmStream *midi1_out; + PmStream *midi2_out; + PmStream *midi1_in; + PmStream *midi2_in; + int id1_out; + int id2_out; + int id1_in; + int id2_in; + int32_t next_time; + PmEvent buffer[1]; + PmTimestamp timestamp; + int pitch = 60; + int expected_count = num + 1; /* add 1 for MIDI Program message */ + + /* It is recommended to start timer before Midi; otherwise, PortMidi may + start the timer with its (default) parameters + */ + TIME_START; + + init("portmidi1", &midi1_out, &midi1_in, &id1_out, &id1_in); + init("portmidi2", &midi2_out, &midi2_in, &id2_out, &id2_in); + + printf("Type ENTER to send messages: "); + while (getchar() != '\n') ; + + buffer[0].timestamp = Pt_Time(); +#define PROGRAM 0 + buffer[0].message = Pm_Message(0xC0, PROGRAM, 0); + Pm_Write(midi1_out, buffer, 1); + Pm_Write(midi2_out, buffer, 1); + next_time = Pt_Time() + 1000; /* wait 1s */ + while (num > 0) { + wait_until(next_time, midi1_in, midi2_in); + Pm_WriteShort(midi1_out, next_time, Pm_Message(0x90, pitch, 100)); + Pm_WriteShort(midi2_out, next_time, Pm_Message(0x90, pitch + 12, 100)); + printf("Note On pitch %d\n", pitch); + num--; + next_time += 500; + + wait_until(next_time, midi1_in, midi2_in); + Pm_WriteShort(midi1_out, next_time, Pm_Message(0x90, pitch, 0)); + Pm_WriteShort(midi2_out, next_time, Pm_Message(0x90, pitch + 12, 0)); + printf("Note Off pitch %d\n", pitch); + num--; + pitch = (pitch + 1) % 12 + 60; + next_time += 500; + } + wait_until(next_time, midi1_in, midi2_in); /* get final note-offs */ + + printf("Got %d messages from portmidi1 and %d from portmidi2; " + "expected %d.\n", msg_count[0], msg_count[1], expected_count); + + /* close devices (this not explicitly needed in most implementations) */ + printf("ready to close..."); + checkerror(Pm_Close(midi1_out)); + checkerror(Pm_Close(midi2_out)); + checkerror(Pm_Close(midi1_in)); + checkerror(Pm_Close(midi2_in)); + printf("done closing.\nNow delete the virtual devices..."); + checkerror(Pm_DeleteVirtualDevice(id1_out)); + checkerror(Pm_DeleteVirtualDevice(id1_in)); + checkerror(Pm_DeleteVirtualDevice(id2_out)); + checkerror(Pm_DeleteVirtualDevice(id2_in)); + printf("done deleting.\n"); +} + + +void show_usage() +{ + printf("Usage: multivirtual [-h] [-l latency-in-ms] [n]\n" + " -h for this message,\n" + " -l ms designates latency for precise timing (default 0),\n" + " n is number of message to send each output, not counting\n" + " initial program change.\n" + "sends change program to 1, then one note per second with 0.5s on,\n" + "0.5s off, for n/2 seconds to both output ports portmidi1 and\n" + "portmidi2. portmidi1 gets pitches from C4 (60). portmidi2 gets\n" + "pitches an octave higher. Latency >0 uses the device driver for \n" + "precise timing (see PortMidi documentation). Inputs print what\n" + "they get and print WARNING if they get something unexpected.\n" + "The expected test is use two instances of testio to loop\n" + "portmidi1 back to portmidi1 and portmidi2 back to portmidi2.\n"); + exit(0); +} + + +int main(int argc, char *argv[]) +{ + int num = 10; + int i; + for (i = 1; i < argc; i++) { + if (strcmp(argv[i], "-h") == 0) { + show_usage(); + } else if (strcmp(argv[i], "-l") == 0 && (i + 1 < argc)) { + i = i + 1; + latency = atoi(argv[i]); + printf("Latency will be %d\n", latency); + } else { + num = atoi(argv[1]); + if (num <= 0) { + show_usage(); + } + printf("Sending %d messages.\n", num); + } + } + + main_test(num); + + printf("finished sendvirtual test...type ENTER to quit..."); + while (getchar() != '\n') ; + return 0; +} |