75 lines
1.3 KiB
C
75 lines
1.3 KiB
C
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#include <stdio.h>
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#include <malloc.h>
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#include <assert.h>
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#include <sndfile.h>
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#include "simpleaudio.h"
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#include "simpleaudio_internal.h"
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/*
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* sndfile backend for simpleaudio
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*/
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static size_t
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sa_sndfile_read( simpleaudio *sa, float *buf, size_t nframes )
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{
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SNDFILE *s = (SNDFILE *)sa->backend_handle;
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int n;
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if ((n = sf_readf_float(s, buf, nframes)) < 0) {
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fprintf(stderr, "sf_read_float: ");
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sf_perror(s);
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return -1;
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}
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//fprintf(stderr, "sf_read_float: nframes=%ld n=%d\n", nframes, n);
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return n;
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}
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static void
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sa_sndfile_close( simpleaudio *sa )
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{
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sf_close(sa->backend_handle);
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}
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static const struct simpleaudio_backend simpleaudio_backend_pulse = {
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sa_sndfile_read,
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sa_sndfile_close,
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};
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simpleaudio *
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simpleaudio_open_source_sndfile(char *path)
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{
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SF_INFO sfinfo = {
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.format = 0
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};
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/* Create the recording stream */
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SNDFILE *s;
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s = sf_open(path, SFM_READ, &sfinfo);
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if ( !s ) {
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fprintf(stderr, "%s: ", path);
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sf_perror(s);
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return NULL;
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}
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simpleaudio *sa = malloc(sizeof(simpleaudio));
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if ( !sa ) {
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perror("malloc");
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sf_close(s);
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return NULL;
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}
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sa->rate = sfinfo.samplerate;
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sa->channels = sfinfo.channels;
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sa->backend = &simpleaudio_backend_pulse;
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sa->backend_handle = s;
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sa->backend_framesize = sa->channels * sizeof(float);
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return sa;
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}
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