+++ /dev/null
-/******************************************************************************
-* *
-* easycap_sound.c *
-* *
-* Audio driver for EasyCAP USB2.0 Video Capture Device DC60 *
-* *
-* *
-******************************************************************************/
-/*
- *
- * Copyright (C) 2010 R.M. Thomas <rmthomas@sciolus.org>
- *
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * The software is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
-*/
-/*****************************************************************************/
-
-#include "easycap.h"
-
-/*****************************************************************************/
-/**************************** **************************/
-/**************************** Open Sound System **************************/
-/**************************** **************************/
-/*****************************************************************************/
-/*--------------------------------------------------------------------------*/
-/*
- * PARAMETERS USED WHEN REGISTERING THE AUDIO INTERFACE
- */
-/*--------------------------------------------------------------------------*/
-/*****************************************************************************/
-/*---------------------------------------------------------------------------*/
-/*
- * ON COMPLETION OF AN AUDIO URB ITS DATA IS COPIED TO THE AUDIO BUFFERS
- * PROVIDED peasycap->audio_idle IS ZERO. REGARDLESS OF THIS BEING TRUE,
- * IT IS RESUBMITTED PROVIDED peasycap->audio_isoc_streaming IS NOT ZERO.
- */
-/*---------------------------------------------------------------------------*/
-void
-easyoss_complete(struct urb *purb)
-{
- struct easycap *peasycap;
- struct data_buffer *paudio_buffer;
- u8 *p1, *p2;
- s16 tmp;
- int i, j, more, much, leap, rc;
-#ifdef UPSAMPLE
- int k;
- s16 oldaudio, newaudio, delta;
-#endif /*UPSAMPLE*/
-
- JOT(16, "\n");
-
- if (!purb) {
- SAY("ERROR: purb is NULL\n");
- return;
- }
- peasycap = purb->context;
- if (!peasycap) {
- SAY("ERROR: peasycap is NULL\n");
- return;
- }
- if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
- SAY("ERROR: bad peasycap\n");
- return;
- }
- much = 0;
- if (peasycap->audio_idle) {
- JOM(16, "%i=audio_idle %i=audio_isoc_streaming\n",
- peasycap->audio_idle, peasycap->audio_isoc_streaming);
- if (peasycap->audio_isoc_streaming) {
- rc = usb_submit_urb(purb, GFP_ATOMIC);
- if (rc) {
- if (-ENODEV != rc && -ENOENT != rc) {
- SAM("ERROR: while %i=audio_idle, "
- "usb_submit_urb() failed with rc: -%s: %d\n",
- peasycap->audio_idle,
- strerror(rc), rc);
- }
- }
- }
- return;
- }
-/*---------------------------------------------------------------------------*/
- if (purb->status) {
- if ((-ESHUTDOWN == purb->status) || (-ENOENT == purb->status)) {
- JOM(16, "urb status -ESHUTDOWN or -ENOENT\n");
- return;
- }
- SAM("ERROR: non-zero urb status: -%s: %d\n",
- strerror(purb->status), purb->status);
- goto resubmit;
- }
-/*---------------------------------------------------------------------------*/
-/*
- * PROCEED HERE WHEN NO ERROR
- */
-/*---------------------------------------------------------------------------*/
-#ifdef UPSAMPLE
- oldaudio = peasycap->oldaudio;
-#endif /*UPSAMPLE*/
-
- for (i = 0; i < purb->number_of_packets; i++) {
- if (!purb->iso_frame_desc[i].status) {
-
- SAM("-%s\n", strerror(purb->iso_frame_desc[i].status));
-
- more = purb->iso_frame_desc[i].actual_length;
-
- if (!more)
- peasycap->audio_mt++;
- else {
- if (peasycap->audio_mt) {
- JOM(12, "%4i empty audio urb frames\n",
- peasycap->audio_mt);
- peasycap->audio_mt = 0;
- }
-
- p1 = (u8 *)(purb->transfer_buffer + purb->iso_frame_desc[i].offset);
-
- leap = 0;
- p1 += leap;
- more -= leap;
- /*
- * COPY more BYTES FROM ISOC BUFFER
- * TO AUDIO BUFFER, CONVERTING
- * 8-BIT MONO TO 16-BIT SIGNED
- * LITTLE-ENDIAN SAMPLES IF NECESSARY
- */
- while (more) {
- if (0 > more) {
- SAM("MISTAKE: more is negative\n");
- return;
- }
- if (peasycap->audio_buffer_page_many <= peasycap->audio_fill) {
- SAM("ERROR: bad peasycap->audio_fill\n");
- return;
- }
-
- paudio_buffer = &peasycap->audio_buffer[peasycap->audio_fill];
- if (PAGE_SIZE < (paudio_buffer->pto - paudio_buffer->pgo)) {
- SAM("ERROR: bad paudio_buffer->pto\n");
- return;
- }
- if (PAGE_SIZE == (paudio_buffer->pto - paudio_buffer->pgo)) {
-
- paudio_buffer->pto = paudio_buffer->pgo;
- (peasycap->audio_fill)++;
- if (peasycap->audio_buffer_page_many <= peasycap->audio_fill)
- peasycap->audio_fill = 0;
-
- JOM(8, "bumped peasycap->"
- "audio_fill to %i\n",
- peasycap->audio_fill);
-
- paudio_buffer = &peasycap->audio_buffer[peasycap->audio_fill];
- paudio_buffer->pto = paudio_buffer->pgo;
-
- if (!(peasycap->audio_fill % peasycap->audio_pages_per_fragment)) {
- JOM(12, "wakeup call on wq_audio, %i=frag reading %i=fragment fill\n",
- (peasycap->audio_read / peasycap->audio_pages_per_fragment),
- (peasycap->audio_fill / peasycap->audio_pages_per_fragment));
- wake_up_interruptible(&(peasycap->wq_audio));
- }
- }
-
- much = PAGE_SIZE - (int)(paudio_buffer->pto - paudio_buffer->pgo);
-
- if (!peasycap->microphone) {
- if (much > more)
- much = more;
-
- memcpy(paudio_buffer->pto, p1, much);
- p1 += much;
- more -= much;
- } else {
-#ifdef UPSAMPLE
- if (much % 16)
- JOM(8, "MISTAKE? much"
- " is not divisible by 16\n");
- if (much > (16 * more))
- much = 16 * more;
- p2 = (u8 *)paudio_buffer->pto;
-
- for (j = 0; j < (much/16); j++) {
- newaudio = ((int) *p1) - 128;
- newaudio = 128 * newaudio;
-
- delta = (newaudio - oldaudio) / 4;
- tmp = oldaudio + delta;
-
- for (k = 0; k < 4; k++) {
- *p2 = (0x00FF & tmp);
- *(p2 + 1) = (0xFF00 & tmp) >> 8;
- p2 += 2;
- *p2 = (0x00FF & tmp);
- *(p2 + 1) = (0xFF00 & tmp) >> 8;
- p2 += 2;
-
- tmp += delta;
- }
- p1++;
- more--;
- oldaudio = tmp;
- }
-#else /*!UPSAMPLE*/
- if (much > (2 * more))
- much = 2 * more;
- p2 = (u8 *)paudio_buffer->pto;
-
- for (j = 0; j < (much / 2); j++) {
- tmp = ((int) *p1) - 128;
- tmp = 128 * tmp;
- *p2 = (0x00FF & tmp);
- *(p2 + 1) = (0xFF00 & tmp) >> 8;
- p1++;
- p2 += 2;
- more--;
- }
-#endif /*UPSAMPLE*/
- }
- (paudio_buffer->pto) += much;
- }
- }
- } else {
- JOM(12, "discarding audio samples because "
- "%i=purb->iso_frame_desc[i].status\n",
- purb->iso_frame_desc[i].status);
- }
-
-#ifdef UPSAMPLE
- peasycap->oldaudio = oldaudio;
-#endif /*UPSAMPLE*/
-
- }
-/*---------------------------------------------------------------------------*/
-/*
- * RESUBMIT THIS URB
- */
-/*---------------------------------------------------------------------------*/
-resubmit:
- if (peasycap->audio_isoc_streaming) {
- rc = usb_submit_urb(purb, GFP_ATOMIC);
- if (rc) {
- if (-ENODEV != rc && -ENOENT != rc) {
- SAM("ERROR: while %i=audio_idle, "
- "usb_submit_urb() failed "
- "with rc: -%s: %d\n", peasycap->audio_idle,
- strerror(rc), rc);
- }
- }
- }
- return;
-}
-/*****************************************************************************/
-/*---------------------------------------------------------------------------*/
-/*
- * THE AUDIO URBS ARE SUBMITTED AT THIS EARLY STAGE SO THAT IT IS POSSIBLE TO
- * STREAM FROM /dev/easyoss1 WITH SIMPLE PROGRAMS SUCH AS cat WHICH DO NOT
- * HAVE AN IOCTL INTERFACE.
- */
-/*---------------------------------------------------------------------------*/
-static int easyoss_open(struct inode *inode, struct file *file)
-{
- struct usb_interface *pusb_interface;
- struct easycap *peasycap;
- int subminor;
- struct v4l2_device *pv4l2_device;
-
- JOT(4, "begins\n");
-
- subminor = iminor(inode);
-
- pusb_interface = usb_find_interface(&easycap_usb_driver, subminor);
- if (!pusb_interface) {
- SAY("ERROR: pusb_interface is NULL\n");
- SAY("ending unsuccessfully\n");
- return -1;
- }
- peasycap = usb_get_intfdata(pusb_interface);
- if (!peasycap) {
- SAY("ERROR: peasycap is NULL\n");
- SAY("ending unsuccessfully\n");
- return -1;
- }
-/*---------------------------------------------------------------------------*/
-/*
- * SOME VERSIONS OF THE videodev MODULE OVERWRITE THE DATA WHICH HAS
- * BEEN WRITTEN BY THE CALL TO usb_set_intfdata() IN easycap_usb_probe(),
- * REPLACING IT WITH A POINTER TO THE EMBEDDED v4l2_device STRUCTURE.
- * TO DETECT THIS, THE STRING IN THE easycap.telltale[] BUFFER IS CHECKED.
-*/
-/*---------------------------------------------------------------------------*/
- if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
- pv4l2_device = usb_get_intfdata(pusb_interface);
- if (!pv4l2_device) {
- SAY("ERROR: pv4l2_device is NULL\n");
- return -EFAULT;
- }
- peasycap = container_of(pv4l2_device,
- struct easycap, v4l2_device);
- }
-/*---------------------------------------------------------------------------*/
- if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
- SAY("ERROR: bad peasycap: %p\n", peasycap);
- return -EFAULT;
- }
-/*---------------------------------------------------------------------------*/
-
- file->private_data = peasycap;
-
- if (0 != easycap_sound_setup(peasycap)) {
- ;
- ;
- }
- return 0;
-}
-/*****************************************************************************/
-static int easyoss_release(struct inode *inode, struct file *file)
-{
- struct easycap *peasycap;
-
- JOT(4, "begins\n");
-
- peasycap = file->private_data;
- if (!peasycap) {
- SAY("ERROR: peasycap is NULL.\n");
- return -EFAULT;
- }
- if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
- SAY("ERROR: bad peasycap: %p\n", peasycap);
- return -EFAULT;
- }
- if (0 != kill_audio_urbs(peasycap)) {
- SAM("ERROR: kill_audio_urbs() failed\n");
- return -EFAULT;
- }
- JOM(4, "ending successfully\n");
- return 0;
-}
-/*****************************************************************************/
-static ssize_t easyoss_read(struct file *file, char __user *puserspacebuffer,
- size_t kount, loff_t *poff)
-{
- struct timeval timeval;
- long long int above, below, mean;
- struct signed_div_result sdr;
- unsigned char *p0;
- long int kount1, more, rc, l0, lm;
- int fragment, kd;
- struct easycap *peasycap;
- struct data_buffer *pdata_buffer;
- size_t szret;
-
-/*---------------------------------------------------------------------------*/
-/*
- * DO A BLOCKING READ TO TRANSFER DATA TO USER SPACE.
- *
- ******************************************************************************
- ***** N.B. IF THIS FUNCTION RETURNS 0, NOTHING IS SEEN IN USER SPACE. ******
- ***** THIS CONDITION SIGNIFIES END-OF-FILE. ******
- ******************************************************************************
- */
-/*---------------------------------------------------------------------------*/
-
- JOT(8, "%5zd=kount %5lld=*poff\n", kount, *poff);
-
- if (!file) {
- SAY("ERROR: file is NULL\n");
- return -ERESTARTSYS;
- }
- peasycap = file->private_data;
- if (!peasycap) {
- SAY("ERROR in easyoss_read(): peasycap is NULL\n");
- return -EFAULT;
- }
- if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
- SAY("ERROR: bad peasycap: %p\n", peasycap);
- return -EFAULT;
- }
- if (!peasycap->pusb_device) {
- SAY("ERROR: peasycap->pusb_device is NULL\n");
- return -EFAULT;
- }
- kd = isdongle(peasycap);
- if (0 <= kd && DONGLE_MANY > kd) {
- if (mutex_lock_interruptible(&(easycapdc60_dongle[kd].mutex_audio))) {
- SAY("ERROR: "
- "cannot lock dongle[%i].mutex_audio\n", kd);
- return -ERESTARTSYS;
- }
- JOM(4, "locked dongle[%i].mutex_audio\n", kd);
- /*
- * MEANWHILE, easycap_usb_disconnect()
- * MAY HAVE FREED POINTER peasycap,
- * IN WHICH CASE A REPEAT CALL TO isdongle() WILL FAIL.
- * IF NECESSARY, BAIL OUT.
- */
- if (kd != isdongle(peasycap))
- return -ERESTARTSYS;
- if (!file) {
- SAY("ERROR: file is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ERESTARTSYS;
- }
- peasycap = file->private_data;
- if (!peasycap) {
- SAY("ERROR: peasycap is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ERESTARTSYS;
- }
- if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
- SAY("ERROR: bad peasycap: %p\n", peasycap);
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ERESTARTSYS;
- }
- if (!peasycap->pusb_device) {
- SAM("ERROR: peasycap->pusb_device is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ERESTARTSYS;
- }
- } else {
- /*
- * IF easycap_usb_disconnect()
- * HAS ALREADY FREED POINTER peasycap BEFORE THE
- * ATTEMPT TO ACQUIRE THE SEMAPHORE,
- * isdongle() WILL HAVE FAILED. BAIL OUT.
- */
- return -ERESTARTSYS;
- }
-/*---------------------------------------------------------------------------*/
- JOT(16, "%sBLOCKING kount=%zd, *poff=%lld\n",
- (file->f_flags & O_NONBLOCK) ? "NON" : "", kount, *poff);
-
- if ((0 > peasycap->audio_read) ||
- (peasycap->audio_buffer_page_many <= peasycap->audio_read)) {
- SAM("ERROR: peasycap->audio_read out of range\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- pdata_buffer = &peasycap->audio_buffer[peasycap->audio_read];
- if (!pdata_buffer) {
- SAM("ERROR: pdata_buffer is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- JOM(12, "before wait, %i=frag read %i=frag fill\n",
- (peasycap->audio_read / peasycap->audio_pages_per_fragment),
- (peasycap->audio_fill / peasycap->audio_pages_per_fragment));
- fragment = (peasycap->audio_read / peasycap->audio_pages_per_fragment);
- while ((fragment == (peasycap->audio_fill / peasycap->audio_pages_per_fragment)) ||
- (0 == (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo)))) {
- if (file->f_flags & O_NONBLOCK) {
- JOM(16, "returning -EAGAIN as instructed\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EAGAIN;
- }
- rc = wait_event_interruptible(peasycap->wq_audio,
- (peasycap->audio_idle || peasycap->audio_eof ||
- ((fragment !=
- (peasycap->audio_fill / peasycap->audio_pages_per_fragment)) &&
- (0 < (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo))))));
- if (rc) {
- SAM("aborted by signal\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ERESTARTSYS;
- }
- if (peasycap->audio_eof) {
- JOM(8, "returning 0 because %i=audio_eof\n",
- peasycap->audio_eof);
- kill_audio_urbs(peasycap);
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return 0;
- }
- if (peasycap->audio_idle) {
- JOM(16, "returning 0 because %i=audio_idle\n",
- peasycap->audio_idle);
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return 0;
- }
- if (!peasycap->audio_isoc_streaming) {
- JOM(16, "returning 0 because audio urbs not streaming\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return 0;
- }
- }
- JOM(12, "after wait, %i=frag read %i=frag fill\n",
- (peasycap->audio_read / peasycap->audio_pages_per_fragment),
- (peasycap->audio_fill / peasycap->audio_pages_per_fragment));
- szret = (size_t)0;
- fragment = (peasycap->audio_read / peasycap->audio_pages_per_fragment);
- while (fragment == (peasycap->audio_read / peasycap->audio_pages_per_fragment)) {
- if (!pdata_buffer->pgo) {
- SAM("ERROR: pdata_buffer->pgo is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- if (!pdata_buffer->pto) {
- SAM("ERROR: pdata_buffer->pto is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- kount1 = PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo);
- if (0 > kount1) {
- SAM("MISTAKE: kount1 is negative\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ERESTARTSYS;
- }
- if (!kount1) {
- peasycap->audio_read++;
- if (peasycap->audio_buffer_page_many <= peasycap->audio_read)
- peasycap->audio_read = 0;
- JOM(12, "bumped peasycap->audio_read to %i\n",
- peasycap->audio_read);
-
- if (fragment != (peasycap->audio_read / peasycap->audio_pages_per_fragment))
- break;
-
- if ((0 > peasycap->audio_read) ||
- (peasycap->audio_buffer_page_many <= peasycap->audio_read)) {
- SAM("ERROR: peasycap->audio_read out of range\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- pdata_buffer = &peasycap->audio_buffer[peasycap->audio_read];
- if (!pdata_buffer) {
- SAM("ERROR: pdata_buffer is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- if (!pdata_buffer->pgo) {
- SAM("ERROR: pdata_buffer->pgo is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- if (!pdata_buffer->pto) {
- SAM("ERROR: pdata_buffer->pto is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- kount1 = PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo);
- }
- JOM(12, "ready to send %zd bytes\n", kount1);
- JOM(12, "still to send %li bytes\n", (long int) kount);
- more = kount1;
- if (more > kount)
- more = kount;
- JOM(12, "agreed to send %li bytes from page %i\n",
- more, peasycap->audio_read);
- if (!more)
- break;
-
- /*
- * ACCUMULATE DYNAMIC-RANGE INFORMATION
- */
- p0 = (unsigned char *)pdata_buffer->pgo;
- l0 = 0;
- lm = more/2;
- while (l0 < lm) {
- SUMMER(p0, &peasycap->audio_sample,
- &peasycap->audio_niveau,
- &peasycap->audio_square);
- l0++;
- p0 += 2;
- }
- /*-----------------------------------------------------------*/
- rc = copy_to_user(puserspacebuffer, pdata_buffer->pto, more);
- if (rc) {
- SAM("ERROR: copy_to_user() returned %li\n", rc);
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- *poff += (loff_t)more;
- szret += (size_t)more;
- pdata_buffer->pto += more;
- puserspacebuffer += more;
- kount -= (size_t)more;
- }
- JOM(12, "after read, %i=frag read %i=frag fill\n",
- (peasycap->audio_read / peasycap->audio_pages_per_fragment),
- (peasycap->audio_fill / peasycap->audio_pages_per_fragment));
- if (kount < 0) {
- SAM("MISTAKE: %li=kount %li=szret\n",
- (long int)kount, (long int)szret);
- }
-/*---------------------------------------------------------------------------*/
-/*
- * CALCULATE DYNAMIC RANGE FOR (VAPOURWARE) AUTOMATIC VOLUME CONTROL
- */
-/*---------------------------------------------------------------------------*/
- if (peasycap->audio_sample) {
- below = peasycap->audio_sample;
- above = peasycap->audio_square;
- sdr = signed_div(above, below);
- above = sdr.quotient;
- mean = peasycap->audio_niveau;
- sdr = signed_div(mean, peasycap->audio_sample);
-
- JOM(8, "%8lli=mean %8lli=meansquare after %lli samples, =>\n",
- sdr.quotient, above, peasycap->audio_sample);
-
- sdr = signed_div(above, 32768);
- JOM(8, "audio dynamic range is roughly %lli\n", sdr.quotient);
- }
-/*---------------------------------------------------------------------------*/
-/*
- * UPDATE THE AUDIO CLOCK
- */
-/*---------------------------------------------------------------------------*/
- do_gettimeofday(&timeval);
- if (!peasycap->timeval1.tv_sec) {
- peasycap->audio_bytes = 0;
- peasycap->timeval3 = timeval;
- peasycap->timeval1 = peasycap->timeval3;
- sdr.quotient = 192000;
- } else {
- peasycap->audio_bytes += (long long int) szret;
- below = ((long long int)(1000000)) *
- ((long long int)(timeval.tv_sec - peasycap->timeval3.tv_sec)) +
- (long long int)(timeval.tv_usec - peasycap->timeval3.tv_usec);
- above = 1000000 * ((long long int) peasycap->audio_bytes);
-
- if (below)
- sdr = signed_div(above, below);
- else
- sdr.quotient = 192000;
- }
- JOM(8, "audio streaming at %lli bytes/second\n", sdr.quotient);
- peasycap->dnbydt = sdr.quotient;
-
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- JOM(4, "unlocked easycapdc60_dongle[%i].mutex_audio\n", kd);
- JOM(8, "returning %li\n", (long int)szret);
- return szret;
-
-}
-/*---------------------------------------------------------------------------*/
-static long easyoss_unlocked_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct easycap *peasycap;
- struct usb_device *p;
- int kd;
-
- if (!file) {
- SAY("ERROR: file is NULL\n");
- return -ERESTARTSYS;
- }
- peasycap = file->private_data;
- if (!peasycap) {
- SAY("ERROR: peasycap is NULL.\n");
- return -EFAULT;
- }
- if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
- SAY("ERROR: bad peasycap\n");
- return -EFAULT;
- }
- p = peasycap->pusb_device;
- if (!p) {
- SAM("ERROR: peasycap->pusb_device is NULL\n");
- return -EFAULT;
- }
- kd = isdongle(peasycap);
- if (0 <= kd && DONGLE_MANY > kd) {
- if (mutex_lock_interruptible(&easycapdc60_dongle[kd].mutex_audio)) {
- SAY("ERROR: cannot lock "
- "easycapdc60_dongle[%i].mutex_audio\n", kd);
- return -ERESTARTSYS;
- }
- JOM(4, "locked easycapdc60_dongle[%i].mutex_audio\n", kd);
- /*
- * MEANWHILE, easycap_usb_disconnect()
- * MAY HAVE FREED POINTER peasycap,
- * IN WHICH CASE A REPEAT CALL TO isdongle() WILL FAIL.
- * IF NECESSARY, BAIL OUT.
- */
- if (kd != isdongle(peasycap))
- return -ERESTARTSYS;
- if (!file) {
- SAY("ERROR: file is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ERESTARTSYS;
- }
- peasycap = file->private_data;
- if (!peasycap) {
- SAY("ERROR: peasycap is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ERESTARTSYS;
- }
- if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
- SAY("ERROR: bad peasycap\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- p = peasycap->pusb_device;
- if (!peasycap->pusb_device) {
- SAM("ERROR: peasycap->pusb_device is NULL\n");
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ERESTARTSYS;
- }
- } else {
- /*
- * IF easycap_usb_disconnect()
- * HAS ALREADY FREED POINTER peasycap BEFORE THE
- * ATTEMPT TO ACQUIRE THE SEMAPHORE,
- * isdongle() WILL HAVE FAILED. BAIL OUT.
- */
- return -ERESTARTSYS;
- }
-/*---------------------------------------------------------------------------*/
- switch (cmd) {
- case SNDCTL_DSP_GETCAPS: {
- int caps;
- JOM(8, "SNDCTL_DSP_GETCAPS\n");
-
-#ifdef UPSAMPLE
- if (peasycap->microphone)
- caps = 0x04400000;
- else
- caps = 0x04400000;
-#else
- if (peasycap->microphone)
- caps = 0x02400000;
- else
- caps = 0x04400000;
-#endif /*UPSAMPLE*/
-
- if (copy_to_user((void __user *)arg, &caps, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- break;
- }
- case SNDCTL_DSP_GETFMTS: {
- int incoming;
- JOM(8, "SNDCTL_DSP_GETFMTS\n");
-
-#ifdef UPSAMPLE
- if (peasycap->microphone)
- incoming = AFMT_S16_LE;
- else
- incoming = AFMT_S16_LE;
-#else
- if (peasycap->microphone)
- incoming = AFMT_S16_LE;
- else
- incoming = AFMT_S16_LE;
-#endif /*UPSAMPLE*/
-
- if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- break;
- }
- case SNDCTL_DSP_SETFMT: {
- int incoming, outgoing;
- JOM(8, "SNDCTL_DSP_SETFMT\n");
- if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- JOM(8, "........... %i=incoming\n", incoming);
-
-#ifdef UPSAMPLE
- if (peasycap->microphone)
- outgoing = AFMT_S16_LE;
- else
- outgoing = AFMT_S16_LE;
-#else
- if (peasycap->microphone)
- outgoing = AFMT_S16_LE;
- else
- outgoing = AFMT_S16_LE;
-#endif /*UPSAMPLE*/
-
- if (incoming != outgoing) {
- JOM(8, "........... %i=outgoing\n", outgoing);
- JOM(8, " cf. %i=AFMT_S16_LE\n", AFMT_S16_LE);
- JOM(8, " cf. %i=AFMT_U8\n", AFMT_U8);
- if (copy_to_user((void __user *)arg, &outgoing, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EINVAL ;
- }
- break;
- }
- case SNDCTL_DSP_STEREO: {
- int incoming;
- JOM(8, "SNDCTL_DSP_STEREO\n");
- if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- JOM(8, "........... %i=incoming\n", incoming);
-
-#ifdef UPSAMPLE
- if (peasycap->microphone)
- incoming = 1;
- else
- incoming = 1;
-#else
- if (peasycap->microphone)
- incoming = 0;
- else
- incoming = 1;
-#endif /*UPSAMPLE*/
-
- if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- break;
- }
- case SNDCTL_DSP_SPEED: {
- int incoming;
- JOM(8, "SNDCTL_DSP_SPEED\n");
- if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- JOM(8, "........... %i=incoming\n", incoming);
-
-#ifdef UPSAMPLE
- if (peasycap->microphone)
- incoming = 32000;
- else
- incoming = 48000;
-#else
- if (peasycap->microphone)
- incoming = 8000;
- else
- incoming = 48000;
-#endif /*UPSAMPLE*/
-
- if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- break;
- }
- case SNDCTL_DSP_GETTRIGGER: {
- int incoming;
- JOM(8, "SNDCTL_DSP_GETTRIGGER\n");
- if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- JOM(8, "........... %i=incoming\n", incoming);
-
- incoming = PCM_ENABLE_INPUT;
- if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- break;
- }
- case SNDCTL_DSP_SETTRIGGER: {
- int incoming;
- JOM(8, "SNDCTL_DSP_SETTRIGGER\n");
- if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- JOM(8, "........... %i=incoming\n", incoming);
- JOM(8, "........... cf 0x%x=PCM_ENABLE_INPUT "
- "0x%x=PCM_ENABLE_OUTPUT\n",
- PCM_ENABLE_INPUT, PCM_ENABLE_OUTPUT);
- ;
- ;
- ;
- ;
- break;
- }
- case SNDCTL_DSP_GETBLKSIZE: {
- int incoming;
- JOM(8, "SNDCTL_DSP_GETBLKSIZE\n");
- if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- JOM(8, "........... %i=incoming\n", incoming);
- incoming = peasycap->audio_bytes_per_fragment;
- if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- break;
- }
- case SNDCTL_DSP_GETISPACE: {
- struct audio_buf_info audio_buf_info;
-
- JOM(8, "SNDCTL_DSP_GETISPACE\n");
-
- audio_buf_info.bytes = peasycap->audio_bytes_per_fragment;
- audio_buf_info.fragments = 1;
- audio_buf_info.fragsize = 0;
- audio_buf_info.fragstotal = 0;
-
- if (copy_to_user((void __user *)arg, &audio_buf_info, sizeof(int))) {
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -EFAULT;
- }
- break;
- }
- case 0x00005401:
- case 0x00005402:
- case 0x00005403:
- case 0x00005404:
- case 0x00005405:
- case 0x00005406: {
- JOM(8, "SNDCTL_TMR_...: 0x%08X unsupported\n", cmd);
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ENOIOCTLCMD;
- }
- default: {
- JOM(8, "ERROR: unrecognized DSP IOCTL command: 0x%08X\n", cmd);
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return -ENOIOCTLCMD;
- }
- }
- mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
- return 0;
-}
-/*****************************************************************************/
-
-static const struct file_operations easyoss_fops = {
- .owner = THIS_MODULE,
- .open = easyoss_open,
- .release = easyoss_release,
- .unlocked_ioctl = easyoss_unlocked_ioctl,
- .read = easyoss_read,
- .llseek = no_llseek,
-};
-struct usb_class_driver easyoss_class = {
- .name = "usb/easyoss%d",
- .fops = &easyoss_fops,
- .minor_base = USB_SKEL_MINOR_BASE,
-};
-/*****************************************************************************/
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff