180 строки
6.0 KiB
C
180 строки
6.0 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/init.h>
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#include <linux/usb.h>
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#include <sound/core.h>
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#include <sound/info.h>
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#include <sound/pcm.h>
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#include "usbaudio.h"
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#include "helper.h"
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#include "card.h"
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#include "endpoint.h"
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#include "proc.h"
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/* convert our full speed USB rate into sampling rate in Hz */
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static inline unsigned get_full_speed_hz(unsigned int usb_rate)
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{
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return (usb_rate * 125 + (1 << 12)) >> 13;
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}
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/* convert our high speed USB rate into sampling rate in Hz */
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static inline unsigned get_high_speed_hz(unsigned int usb_rate)
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{
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return (usb_rate * 125 + (1 << 9)) >> 10;
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}
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/*
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* common proc files to show the usb device info
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*/
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static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
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{
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struct snd_usb_audio *chip = entry->private_data;
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if (!chip->shutdown)
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snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
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}
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static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
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{
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struct snd_usb_audio *chip = entry->private_data;
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if (!chip->shutdown)
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snd_iprintf(buffer, "%04x:%04x\n",
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USB_ID_VENDOR(chip->usb_id),
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USB_ID_PRODUCT(chip->usb_id));
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}
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void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
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{
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struct snd_info_entry *entry;
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if (!snd_card_proc_new(chip->card, "usbbus", &entry))
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snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read);
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if (!snd_card_proc_new(chip->card, "usbid", &entry))
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snd_info_set_text_ops(entry, chip, proc_audio_usbid_read);
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}
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/*
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* proc interface for list the supported pcm formats
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*/
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static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
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{
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struct list_head *p;
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static char *sync_types[4] = {
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"NONE", "ASYNC", "ADAPTIVE", "SYNC"
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};
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list_for_each(p, &subs->fmt_list) {
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struct audioformat *fp;
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snd_pcm_format_t fmt;
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fp = list_entry(p, struct audioformat, list);
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snd_iprintf(buffer, " Interface %d\n", fp->iface);
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snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
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snd_iprintf(buffer, " Format:");
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for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt)
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if (fp->formats & (1uLL << fmt))
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snd_iprintf(buffer, " %s",
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snd_pcm_format_name(fmt));
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snd_iprintf(buffer, "\n");
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snd_iprintf(buffer, " Channels: %d\n", fp->channels);
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snd_iprintf(buffer, " Endpoint: %d %s (%s)\n",
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fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
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fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
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sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]);
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if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
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snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",
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fp->rate_min, fp->rate_max);
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} else {
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unsigned int i;
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snd_iprintf(buffer, " Rates: ");
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for (i = 0; i < fp->nr_rates; i++) {
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if (i > 0)
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snd_iprintf(buffer, ", ");
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snd_iprintf(buffer, "%d", fp->rate_table[i]);
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}
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snd_iprintf(buffer, "\n");
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}
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if (subs->speed != USB_SPEED_FULL)
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snd_iprintf(buffer, " Data packet interval: %d us\n",
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125 * (1 << fp->datainterval));
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// snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
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// snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes);
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}
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}
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static void proc_dump_ep_status(struct snd_usb_substream *subs,
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struct snd_usb_endpoint *ep,
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struct snd_info_buffer *buffer)
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{
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if (!ep)
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return;
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snd_iprintf(buffer, " Packet Size = %d\n", ep->curpacksize);
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snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
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subs->speed == USB_SPEED_FULL
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? get_full_speed_hz(ep->freqm)
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: get_high_speed_hz(ep->freqm),
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ep->freqm >> 16, ep->freqm & 0xffff);
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if (ep->freqshift != INT_MIN) {
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int res = 16 - ep->freqshift;
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snd_iprintf(buffer, " Feedback Format = %d.%d\n",
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(ep->syncmaxsize > 3 ? 32 : 24) - res, res);
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}
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}
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static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
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{
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if (subs->running) {
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snd_iprintf(buffer, " Status: Running\n");
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snd_iprintf(buffer, " Interface = %d\n", subs->interface);
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snd_iprintf(buffer, " Altset = %d\n", subs->altset_idx);
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proc_dump_ep_status(subs, subs->data_endpoint, buffer);
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proc_dump_ep_status(subs, subs->sync_endpoint, buffer);
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} else {
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snd_iprintf(buffer, " Status: Stop\n");
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}
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}
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static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
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{
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struct snd_usb_stream *stream = entry->private_data;
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snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
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if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
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snd_iprintf(buffer, "\nPlayback:\n");
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proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
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proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
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}
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if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
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snd_iprintf(buffer, "\nCapture:\n");
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proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
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proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
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}
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}
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void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream)
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{
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struct snd_info_entry *entry;
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char name[32];
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struct snd_card *card = stream->chip->card;
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sprintf(name, "stream%d", stream->pcm_index);
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if (!snd_card_proc_new(card, name, &entry))
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snd_info_set_text_ops(entry, stream, proc_pcm_format_read);
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}
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