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pw-cat: add midi support
This commit is contained in:
Wim Taymans
parent
427a6316d3
commit
fe616e38d8
4 changed files with 497 additions and 10 deletions
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@ -47,6 +47,8 @@
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#include <pipewire/pipewire.h>
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#include <pipewire/global.h>
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#include "midifile.h"
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#define DEFAULT_MEDIA_TYPE "Audio"
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#define DEFAULT_MEDIA_CATEGORY_PLAYBACK "Playback"
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#define DEFAULT_MEDIA_CATEGORY_RECORD "Capture"
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@ -103,6 +105,7 @@ struct data {
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enum mode mode;
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bool verbose;
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bool midi;
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const char *remote_name;
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const char *media_type;
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const char *media_category;
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@ -137,7 +140,15 @@ struct data {
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bool targets_listed;
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struct spa_list targets;
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struct spa_io_position *position;
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bool drained;
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uint64_t clock_start;
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struct {
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FILE *f;
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struct midi_file file;
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struct midi_track track[64];
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} md;
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};
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static inline int
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@ -729,6 +740,20 @@ on_state_changed(void *userdata, enum pw_stream_state old,
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}
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}
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static void
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on_io_changed(void *userdata, uint32_t id, void *data, uint32_t size)
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{
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struct data *d = userdata;
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switch (id) {
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case SPA_IO_Position:
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d->position = data;
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break;
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default:
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break;
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}
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}
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static void
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on_param_changed(void *userdata, uint32_t id, const struct spa_pod *format)
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{
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@ -810,6 +835,7 @@ static void on_drained(void *userdata)
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static const struct pw_stream_events stream_events = {
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PW_VERSION_STREAM_EVENTS,
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.state_changed = on_state_changed,
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.io_changed = on_io_changed,
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.param_changed = on_param_changed,
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.process = on_process,
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.drained = on_drained
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@ -843,6 +869,7 @@ static const struct option long_options[] = {
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{"record", no_argument, NULL, 'r'},
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{"playback", no_argument, NULL, 's'},
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{"midi", no_argument, NULL, 'm'},
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{"remote", required_argument, NULL, 'R'},
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@ -915,6 +942,7 @@ static void show_usage(const char *name, bool is_error)
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fprintf(fp,
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" -p, --playback Playback mode\n"
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" -r, --record Recording mode\n"
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" -m, --midi Midi mode\n"
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"\n");
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}
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@ -923,6 +951,100 @@ static void show_usage(const char *name, bool is_error)
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"\n");
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}
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static int midi_read(void *data, size_t offset, void *buf, size_t size)
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{
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struct data *d = data;
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fseek(d->md.f, offset, SEEK_SET);
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return fread(buf, 1, size, d->md.f);
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}
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static const struct midi_events midi_events = {
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.read = midi_read,
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};
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static int midi_play(struct data *d, void *src, unsigned int n_frames)
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{
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int res;
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struct midi_event ev;
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struct spa_pod_builder b;
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struct spa_pod_frame f;
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uint8_t buf[4096];
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uint32_t first_frame, last_frame;
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spa_zero(b);
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spa_pod_builder_init(&b, src, n_frames);
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spa_pod_builder_push_sequence(&b, &f, 0);
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if (d->clock_start == 0)
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d->clock_start = d->position->clock.position;
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first_frame = d->position->clock.position - d->clock_start;
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last_frame = first_frame + d->position->clock.duration;
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while (1) {
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uint32_t frame;
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res = midi_file_peek_event(&d->md.file, &ev);
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if (res < 0)
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return res;
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frame = ev.tick * ((double)d->position->clock.rate.denom * d->md.file.tempo) /
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(1000000.0 * d->md.file.division);
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if (frame < first_frame)
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frame = 0;
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else if (frame < last_frame)
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frame -= first_frame;
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else
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break;
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spa_pod_builder_control(&b, frame, SPA_CONTROL_Midi);
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buf[0] = ev.status;
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if (ev.status == 0xff)
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buf[1] = ev.meta;
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midi_read(d, ev.offset, ev.status == 0xff ? &buf[2] : &buf[1], ev.size);
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spa_pod_builder_bytes(&b, buf, ev.size + 1);
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midi_file_consume_event(&d->md.file, &ev);
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}
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spa_pod_builder_pop(&b, &f);
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return b.state.offset;
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}
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static int setup_midifile(struct data *data)
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{
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int res;
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uint16_t i;
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data->md.f = fopen(data->filename,
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data->mode == mode_playback ? "r" : "w");
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if (data->md.f == NULL) {
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fprintf(stderr, "error: failed to open midi file \"%s\": %m\n",
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data->filename);
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return -errno;
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}
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if ((res = midi_file_open(&data->md.file, 0, &midi_events, data)) < 0)
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return -errno;
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if (data->verbose)
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printf("opened file \"%s\" format %08x ntracks:%d div:%d\n",
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data->filename,
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data->md.file.format, data->md.file.ntracks,
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data->md.file.division);
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for (i = 0; i < data->md.file.ntracks; i++) {
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midi_file_add_track(&data->md.file, &data->md.track[i]);
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}
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data->fill = data->mode == mode_playback ?
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midi_play : midi_play;
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data->stride = 1;
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return 0;
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}
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static int setup_sndfile(struct data *data)
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{
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SF_INFO info;
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@ -1104,7 +1226,7 @@ int main(int argc, char *argv[])
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/* initialize list everytime */
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spa_list_init(&data.targets);
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while ((c = getopt_long(argc, argv, "hvprR:q:", long_options, NULL)) != -1) {
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while ((c = getopt_long(argc, argv, "hvprmR:q:", long_options, NULL)) != -1) {
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switch (c) {
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@ -1133,6 +1255,10 @@ int main(int argc, char *argv[])
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data.mode = mode_record;
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break;
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case 'm':
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data.midi = true;
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break;
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case 'R':
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data.remote_name = optarg;
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break;
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@ -1310,7 +1436,11 @@ int main(int argc, char *argv[])
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if (!data.list_targets) {
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struct spa_audio_info_raw info;
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ret = setup_sndfile(&data);
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if (data.midi)
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ret = setup_midifile(&data);
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else
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ret = setup_sndfile(&data);
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if (ret < 0) {
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fprintf(stderr, "error: open failed: %s\n", spa_strerror(ret));
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switch (ret) {
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@ -1321,16 +1451,26 @@ int main(int argc, char *argv[])
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goto error_usage;
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}
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}
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info = SPA_AUDIO_INFO_RAW_INIT(
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.flags = data.channelmap.n_channels ? 0 : SPA_AUDIO_FLAG_UNPOSITIONED,
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.format = data.spa_format,
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.rate = data.rate,
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.channels = data.channels);
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if (data.channelmap.n_channels)
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memcpy(info.position, data.channelmap.channels, data.channels * sizeof(int));
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if (!data.midi) {
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info = SPA_AUDIO_INFO_RAW_INIT(
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.flags = data.channelmap.n_channels ? 0 : SPA_AUDIO_FLAG_UNPOSITIONED,
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.format = data.spa_format,
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.rate = data.rate,
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.channels = data.channels);
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params[0] = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat, &info);
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if (data.channelmap.n_channels)
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memcpy(info.position, data.channelmap.channels, data.channels * sizeof(int));
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params[0] = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat, &info);
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} else {
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params[0] = spa_pod_builder_add_object(&b,
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SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
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SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_application),
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SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_control));
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pw_properties_set(data.props, PW_KEY_FORMAT_DSP, "8 bit raw midi");
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}
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data.stream = pw_stream_new(data.core, prog, data.props);
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data.props = NULL;
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