diff options
Diffstat (limited to 'drivers/staging/easycap/easycap_sound_oss.c')
| -rw-r--r-- | drivers/staging/easycap/easycap_sound_oss.c | 954 |
1 files changed, 0 insertions, 954 deletions
diff --git a/drivers/staging/easycap/easycap_sound_oss.c b/drivers/staging/easycap/easycap_sound_oss.c deleted file mode 100644 index d92baf222765..000000000000 --- a/drivers/staging/easycap/easycap_sound_oss.c +++ /dev/null @@ -1,954 +0,0 @@ -/****************************************************************************** -* * -* 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, -}; -/*****************************************************************************/ |