mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-11-04 13:30:12 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

modules: accept and produce UMP only

Browse source
This commit is contained in:
Wim Taymans 2024-07-26 15:20:14 +02:00
parent 40cd8535eb
commit d9e7a10b0d
11 changed files with 199 additions and 126 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/examples/midi-src.c
View file

@ -103,7 +103,7 @@ static void on_process(void *userdata, struct spa_io_position *position)
while (sample_offset < position->clock.duration) {
if (cycle % 2 == 0) {
/* MIDI note on, channel 0, middle C, max velocity */
uint8_t buf[] = { 0x90, 0x3c, 0x7f };
uint32_t event = 0x20903c7f;
/* The time position of the message in the graph cycle
* is given as offset from the cycle start, in
@ -111,18 +111,18 @@ static void on_process(void *userdata, struct spa_io_position *position)
* samples, and the sample offset should satisfy
* 0 <= sample_offset < position->clock.duration.
*/
spa_pod_builder_control(&builder, sample_offset, SPA_CONTROL_Midi);
spa_pod_builder_control(&builder, sample_offset, SPA_CONTROL_UMP);
/* Raw MIDI data for the message */
spa_pod_builder_bytes(&builder, buf, sizeof(buf));
spa_pod_builder_bytes(&builder, &event, sizeof(event));
pw_log_info("note on at %"PRIu64, sample_position + sample_offset);
} else {
/* MIDI note off, channel 0, middle C, max velocity */
uint8_t buf[] = { 0x80, 0x3c, 0x7f };
uint32_t event = 0x20803c7f;
spa_pod_builder_control(&builder, sample_offset, SPA_CONTROL_Midi);
spa_pod_builder_bytes(&builder, buf, sizeof(buf));
spa_pod_builder_control(&builder, sample_offset, SPA_CONTROL_UMP);
spa_pod_builder_bytes(&builder, &event, sizeof(event));
pw_log_info("note off at %"PRIu64, sample_position + sample_offset);
}
@ -213,7 +213,7 @@ int main(int argc, char *argv[])
PW_FILTER_PORT_FLAG_MAP_BUFFERS,
sizeof(struct port),
pw_properties_new(
PW_KEY_FORMAT_DSP, "8 bit raw midi",
PW_KEY_FORMAT_DSP, "32 bit raw UMP",
PW_KEY_PORT_NAME, "output",
NULL),
NULL, 0);