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authorMitja Felicijan <mitja.felicijan@gmail.com>2024-10-07 19:30:56 +0200
committerMitja Felicijan <mitja.felicijan@gmail.com>2024-10-07 19:30:56 +0200
commit40a899bd6ee536eae093337bf2d0dcc8db4e46f1 (patch)
tree485ace3e6fd28b91f394efd277732651e10824d8 /portmidi/pm_test/multivirtual.c
parent6fc4bddfdf8e056469f316c1a0fe488efbb4253a (diff)
downloadttdaw-40a899bd6ee536eae093337bf2d0dcc8db4e46f1.tar.gz
Moved example code examples folder
Diffstat (limited to 'portmidi/pm_test/multivirtual.c')
-rw-r--r--portmidi/pm_test/multivirtual.c223
1 files changed, 0 insertions, 223 deletions
diff --git a/portmidi/pm_test/multivirtual.c b/portmidi/pm_test/multivirtual.c
deleted file mode 100644
index b90d860..0000000
--- a/portmidi/pm_test/multivirtual.c
+++ /dev/null
@@ -1,223 +0,0 @@
-/* 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];
- 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;
-}