@@ -53,20 +53,29 @@ static int snd_pcm_ioplug_hw_ptr_update(snd_pcm_t
*pcm) {
ioplug_priv_t *io = pcm->private_data;
snd_pcm_sframes_t hw;
+ unsigned int delta;
hw = io->data->callback->pointer(io->data);
- if (hw >= 0) {
- unsigned int delta;
- if ((unsigned int)hw >= io->last_hw)
- delta = hw - io->last_hw;
- else
- delta = pcm->buffer_size + hw - io->last_hw;
- snd_pcm_mmap_hw_forward(io->data->pcm, delta);
- io->last_hw = hw;
- return 0;
- } else
- io->data->state = SNDRV_PCM_STATE_XRUN;
- return -EPIPE;
+ if (hw < 0) {
+ switch (hw) {
+ case -ESTRPIPE:
+ io->data->state = SND_PCM_STATE_SUSPENDED;
+ break;
+ case -ENODEV:
+ io->data->state = SND_PCM_STATE_DISCONNECTED;
+ break;
+ default:
+ io->data->state = SND_PCM_STATE_XRUN;
+ }
+ return hw;
+ }
+ if ((unsigned int)hw >= io->last_hw)
+ delta = hw - io->last_hw;
+ else
+ delta = pcm->buffer_size + hw - io->last_hw;
+ snd_pcm_mmap_hw_forward(io->data->pcm, delta);
+ io->last_hw = hw;
+ return 0;
}
static int snd_pcm_ioplug_info(snd_pcm_t *pcm, snd_pcm_info_t *info)
plugio: Check for pointer callback error codes By checking error code returned by the pointer callback, we can determine more precisely PCM state. Previous implementation assumed, that a software PCM can only produce overrun or underrun. It was impossible to mark software PCM as disconnected. Signed-off-by: Arkadiusz Bokowy <arkadiusz.bokowy@gmail.com> --- src/pcm/pcm_ioplug.c | 33 +++++++++++++++++++++------------ 1 file changed, 21 insertions(+), 12 deletions(-)