diff options
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/endpoint.c | 31 | ||||
| -rw-r--r-- | sound/usb/endpoint.h | 5 | ||||
| -rw-r--r-- | sound/usb/pcm.c | 16 |
3 files changed, 35 insertions, 17 deletions
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c index a83a18d..152bfd4 100644 --- a/sound/usb/endpoint.c +++ b/sound/usb/endpoint.c @@ -567,20 +567,19 @@ static void release_urbs(struct snd_usb_endpoint *ep, int force) * configure a data endpoint */ static int data_ep_set_params(struct snd_usb_endpoint *ep, - struct snd_pcm_hw_params *hw_params, + snd_pcm_format_t pcm_format, + unsigned int channels, + unsigned int period_bytes, struct audioformat *fmt, struct snd_usb_endpoint *sync_ep) { unsigned int maxsize, i, urb_packs, total_packs, packs_per_ms; - int period_bytes = params_period_bytes(hw_params); - int format = params_format(hw_params); int is_playback = usb_pipeout(ep->pipe); - int frame_bits = snd_pcm_format_physical_width(params_format(hw_params)) * - params_channels(hw_params); + int frame_bits = snd_pcm_format_physical_width(pcm_format) * channels; ep->datainterval = fmt->datainterval; ep->stride = frame_bits >> 3; - ep->silence_value = format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0; + ep->silence_value = pcm_format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0; /* calculate max. frequency */ if (ep->maxpacksize) { @@ -693,7 +692,6 @@ out_of_memory: * configure a sync endpoint */ static int sync_ep_set_params(struct snd_usb_endpoint *ep, - struct snd_pcm_hw_params *hw_params, struct audioformat *fmt) { int i; @@ -736,7 +734,10 @@ out_of_memory: * snd_usb_endpoint_set_params: configure an snd_usb_endpoint * * @ep: the snd_usb_endpoint to configure - * @hw_params: the hardware parameters + * @pcm_format: the audio fomat. + * @channels: the number of audio channels. + * @period_bytes: the number of bytes in one alsa period. + * @rate: the frame rate. * @fmt: the USB audio format information * @sync_ep: the sync endpoint to use, if any * @@ -745,7 +746,10 @@ out_of_memory: * An endpoint that is already running can not be reconfigured. */ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, - struct snd_pcm_hw_params *hw_params, + snd_pcm_format_t pcm_format, + unsigned int channels, + unsigned int period_bytes, + unsigned int rate, struct audioformat *fmt, struct snd_usb_endpoint *sync_ep) { @@ -765,9 +769,9 @@ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, ep->fill_max = !!(fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX); if (snd_usb_get_speed(ep->chip->dev) == USB_SPEED_FULL) - ep->freqn = get_usb_full_speed_rate(params_rate(hw_params)); + ep->freqn = get_usb_full_speed_rate(rate); else - ep->freqn = get_usb_high_speed_rate(params_rate(hw_params)); + ep->freqn = get_usb_high_speed_rate(rate); /* calculate the frequency in 16.16 format */ ep->freqm = ep->freqn; @@ -777,10 +781,11 @@ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, switch (ep->type) { case SND_USB_ENDPOINT_TYPE_DATA: - err = data_ep_set_params(ep, hw_params, fmt, sync_ep); + err = data_ep_set_params(ep, pcm_format, channels, + period_bytes, fmt, sync_ep); break; case SND_USB_ENDPOINT_TYPE_SYNC: - err = sync_ep_set_params(ep, hw_params, fmt); + err = sync_ep_set_params(ep, fmt); break; default: err = -EINVAL; diff --git a/sound/usb/endpoint.h b/sound/usb/endpoint.h index cbbbdf2..6376ccf 100644 --- a/sound/usb/endpoint.h +++ b/sound/usb/endpoint.h @@ -9,7 +9,10 @@ struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int direction, int type); int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, - struct snd_pcm_hw_params *hw_params, + snd_pcm_format_t pcm_format, + unsigned int channels, + unsigned int period_bytes, + unsigned int rate, struct audioformat *fmt, struct snd_usb_endpoint *sync_ep); diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 786f7a0..62ab4fd 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -491,14 +491,24 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream, mutex_lock(&subs->stream->chip->shutdown_mutex); /* format changed */ stop_endpoints(subs, 0, 0, 0); - ret = snd_usb_endpoint_set_params(subs->data_endpoint, hw_params, fmt, + ret = snd_usb_endpoint_set_params(subs->data_endpoint, + format, + channels, + subs->period_bytes, + rate, + fmt, subs->sync_endpoint); if (ret < 0) goto unlock; if (subs->sync_endpoint) - ret = snd_usb_endpoint_set_params(subs->sync_endpoint, - hw_params, fmt, NULL); + ret = snd_usb_endpoint_set_params(subs->data_endpoint, + format, + channels, + subs->period_bytes, + rate, + fmt, + NULL); unlock: mutex_unlock(&subs->stream->chip->shutdown_mutex); } |