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pw-cat: rework midifile a little

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Move the code to read and write midi into the midifile helper
and simplify things a bit.
This commit is contained in:
Wim Taymans 2020-02-27 12:41:14 +01:00
parent edbf1ff500
commit b7dbf4bbc1
3 changed files with 250 additions and 115 deletions
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57
src/tools/pw-cat.c
View file

@ -28,8 +28,6 @@
#include <errno.h>
#include <time.h>
#include <math.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <signal.h>
#include <fcntl.h>
#include <getopt.h>
@ -147,11 +145,8 @@ struct data {
uint64_t clock_time;
struct {
int fd;
void *mem;
struct stat st;
struct midi_file mf;
struct midi_track track[64];
struct midi_file *file;
struct midi_file_info info;
} midi;
};
@ -977,7 +972,7 @@ static int midi_play(struct data *d, void *src, unsigned int n_frames)
uint32_t frame;
uint8_t *buf;
res = midi_file_peek_event(&d->midi.mf, &ev);
res = midi_file_peek_event(d->midi.file, &ev);
if (res <= 0) {
if (have_data)
break;
@ -1003,50 +998,42 @@ static int midi_play(struct data *d, void *src, unsigned int n_frames)
}
have_data = true;
next:
midi_file_consume_event(&d->midi.mf, &ev);
midi_file_consume_event(d->midi.file, &ev);
}
spa_pod_builder_pop(&b, &f);
return b.state.offset;
}
static int midi_record(struct data *d, void *src, unsigned int n_frames)
{
return 0;
}
static int setup_midifile(struct data *data)
{
int res;
uint16_t i;
if (stat(data->filename, &data->midi.st)) {
fprintf(stderr,"error: can't find file '%s': %m\n", data->filename);
return -errno;
if (data->mode == mode_record) {
spa_zero(data->midi.info);
data->midi.info.format = 0;
data->midi.info.ntracks = 1;
data->midi.info.division = 0;
}
if ((data->midi.fd = open(data->filename, O_RDONLY)) < 0) {
fprintf(stderr, "error: open '%s' failed : %m\n", data->filename);
data->midi.file = midi_file_open(data->filename,
data->mode == mode_playback ? "r" : "w",
&data->midi.info);
if (data->midi.file == NULL) {
fprintf(stderr, "error: can't read midi file '%s': %m\n", data->filename);
return -errno;
}
data->midi.mem = mmap(NULL, data->midi.st.st_size, PROT_READ, MAP_SHARED, data->midi.fd, 0);
if (data->midi.mem == MAP_FAILED) {
fprintf(stderr, "error: mmap '%s' failed : %m\n", data->filename);
close(data->midi.fd);
return -errno;
}
if ((res = midi_file_init(&data->midi.mf, "r", data->midi.mem, data->midi.st.st_size)) < 0) {
fprintf(stderr, "error: can't read midi file '%s': %s\n", data->filename, spa_strerror(res));
close(data->midi.fd);
return res;
}
if (data->verbose)
printf("opened file \"%s\" format %08x ntracks:%d div:%d\n",
data->filename,
data->midi.mf.format, data->midi.mf.ntracks,
data->midi.mf.division);
data->midi.info.format, data->midi.info.ntracks,
data->midi.info.division);
for (i = 0; i < data->midi.mf.ntracks; i++) {
midi_file_add_track(&data->midi.mf, &data->midi.track[i]);
}
data->fill = data->mode == mode_playback ? midi_play : midi_play;
data->fill = data->mode == mode_playback ? midi_play : midi_record;
data->stride = 1;
return 0;