diff options
| -rw-r--r-- | include/tinyalsa/asoundlib.h | 3 | ||||
| -rw-r--r-- | pcm.c | 15 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/tinyalsa/asoundlib.h b/include/tinyalsa/asoundlib.h index 75e5cda..809e02d 100644 --- a/include/tinyalsa/asoundlib.h +++ b/include/tinyalsa/asoundlib.h @@ -239,6 +239,9 @@ int pcm_prepare(struct pcm *pcm); int pcm_start(struct pcm *pcm); int pcm_stop(struct pcm *pcm); +/* ioctl function for PCM driver */ +int pcm_ioctl(struct pcm *pcm, int request, ...); + /* Interrupt driven API */ int pcm_wait(struct pcm *pcm, int timeout); @@ -1283,3 +1283,18 @@ int pcm_mmap_read(struct pcm *pcm, void *data, unsigned int count) return pcm_mmap_transfer(pcm, data, count); } + +int pcm_ioctl(struct pcm *pcm, int request, ...) +{ + va_list ap; + void * arg; + + if (!pcm_is_ready(pcm)) + return -1; + + va_start(ap, request); + arg = va_arg(ap, void *); + va_end(ap); + + return ioctl(pcm->fd, request, arg); +} |