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path: root/drivers/staging/easycap/easycap_sound.c
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Diffstat (limited to 'drivers/staging/easycap/easycap_sound.c')
-rw-r--r--drivers/staging/easycap/easycap_sound.c603
1 files changed, 395 insertions, 208 deletions
diff --git a/drivers/staging/easycap/easycap_sound.c b/drivers/staging/easycap/easycap_sound.c
index 63562bd..24d8bb4 100644
--- a/drivers/staging/easycap/easycap_sound.c
+++ b/drivers/staging/easycap/easycap_sound.c
@@ -36,17 +36,15 @@
/*---------------------------------------------------------------------------*/
/*
* ON COMPLETION OF AN AUDIO URB ITS DATA IS COPIED TO THE AUDIO BUFFERS
- * PROVIDED peasycap->audio_idle IS ZER0. REGARDLESS OF THIS BEING TRUE,
+ * PROVIDED peasycap->audio_idle IS ZERO. REGARDLESS OF THIS BEING TRUE,
* IT IS RESUBMITTED PROVIDED peasycap->audio_isoc_streaming IS NOT ZERO.
*/
/*---------------------------------------------------------------------------*/
void
easysnd_complete(struct urb *purb)
{
-static int mt;
struct easycap *peasycap;
struct data_buffer *paudio_buffer;
-char errbuf[16];
__u8 *p1, *p2;
__s16 s16;
int i, j, more, much, leap, rc;
@@ -66,48 +64,62 @@ if (NULL == peasycap) {
SAY("ERROR: peasycap is NULL\n");
return;
}
-much = 0;
+if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
+ SAY("ERROR: bad peasycap\n");
+ return;
+}
+much = 0;
if (peasycap->audio_idle) {
- JOT(16, "%i=audio_idle %i=audio_isoc_streaming\n", \
+ 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 (0 != rc) {
- SAY("ERROR: while %i=audio_idle, " \
+ if (-ENODEV != rc)
+ SAM("ERROR: while %i=audio_idle, " \
"usb_submit_urb() failed with rc:\n", \
peasycap->audio_idle);
switch (rc) {
case -ENOMEM: {
- SAY("ENOMEM\n"); break;
+ SAM("-ENOMEM\n");
+ break;
}
case -ENODEV: {
- SAY("ENODEV\n"); break;
+ break;
}
case -ENXIO: {
- SAY("ENXIO\n"); break;
+ SAM("-ENXIO\n");
+ break;
}
case -EINVAL: {
- SAY("EINVAL\n"); break;
+ SAM("-EINVAL\n");
+ break;
}
case -EAGAIN: {
- SAY("EAGAIN\n"); break;
+ SAM("-EAGAIN\n");
+ break;
}
case -EFBIG: {
- SAY("EFBIG\n"); break;
+ SAM("-EFBIG\n");
+ break;
}
case -EPIPE: {
- SAY("EPIPE\n"); break;
+ SAM("-EPIPE\n");
+ break;
}
case -EMSGSIZE: {
- SAY("EMSGSIZE\n"); break;
+ SAM("-EMSGSIZE\n");
+ break;
}
case -ENOSPC: {
- SAY("ENOSPC\n"); break;
+ SAM("-ENOSPC\n");
+ break;
}
default: {
- SAY("0x%08X\n", rc); break;
+ SAM("unknown error: 0x%08X\n", rc);
+ break;
}
}
}
@@ -116,74 +128,95 @@ return;
}
/*---------------------------------------------------------------------------*/
if (purb->status) {
- if (-ESHUTDOWN == purb->status) {
- JOT(16, "immediate return because -ESHUTDOWN=purb->status\n");
+ if ((-ESHUTDOWN == purb->status) || (-ENOENT == purb->status)) {
+ JOM(16, "urb status -ESHUTDOWN or -ENOENT\n");
return;
}
- SAY("ERROR: non-zero urb status:\n");
+ SAM("ERROR: non-zero urb status:\n");
switch (purb->status) {
case -EINPROGRESS: {
- SAY("-EINPROGRESS\n"); break;
+ SAM("-EINPROGRESS\n");
+ break;
}
case -ENOSR: {
- SAY("-ENOSR\n"); break;
+ SAM("-ENOSR\n");
+ break;
}
case -EPIPE: {
- SAY("-EPIPE\n"); break;
+ SAM("-EPIPE\n");
+ break;
}
case -EOVERFLOW: {
- SAY("-EOVERFLOW\n"); break;
+ SAM("-EOVERFLOW\n");
+ break;
}
case -EPROTO: {
- SAY("-EPROTO\n"); break;
+ SAM("-EPROTO\n");
+ break;
}
case -EILSEQ: {
- SAY("-EILSEQ\n"); break;
+ SAM("-EILSEQ\n");
+ break;
}
case -ETIMEDOUT: {
- SAY("-ETIMEDOUT\n"); break;
+ SAM("-ETIMEDOUT\n");
+ break;
}
case -EMSGSIZE: {
- SAY("-EMSGSIZE\n"); break;
+ SAM("-EMSGSIZE\n");
+ break;
}
case -EOPNOTSUPP: {
- SAY("-EOPNOTSUPP\n"); break;
+ SAM("-EOPNOTSUPP\n");
+ break;
}
case -EPFNOSUPPORT: {
- SAY("-EPFNOSUPPORT\n"); break;
+ SAM("-EPFNOSUPPORT\n");
+ break;
}
case -EAFNOSUPPORT: {
- SAY("-EAFNOSUPPORT\n"); break;
+ SAM("-EAFNOSUPPORT\n");
+ break;
}
case -EADDRINUSE: {
- SAY("-EADDRINUSE\n"); break;
+ SAM("-EADDRINUSE\n");
+ break;
}
case -EADDRNOTAVAIL: {
- SAY("-EADDRNOTAVAIL\n"); break;
+ SAM("-EADDRNOTAVAIL\n");
+ break;
}
case -ENOBUFS: {
- SAY("-ENOBUFS\n"); break;
+ SAM("-ENOBUFS\n");
+ break;
}
case -EISCONN: {
- SAY("-EISCONN\n"); break;
+ SAM("-EISCONN\n");
+ break;
}
case -ENOTCONN: {
- SAY("-ENOTCONN\n"); break;
+ SAM("-ENOTCONN\n");
+ break;
}
case -ESHUTDOWN: {
- SAY("-ESHUTDOWN\n"); break;
+ SAM("-ESHUTDOWN\n");
+ break;
}
case -ENOENT: {
- SAY("-ENOENT\n"); break;
+ SAM("-ENOENT\n");
+ break;
}
case -ECONNRESET: {
- SAY("-ECONNRESET\n"); break;
+ SAM("-ECONNRESET\n");
+ break;
}
case -ENOSPC: {
- SAY("ENOSPC\n"); break;
+ SAM("ENOSPC\n");
+ break;
}
default: {
- SAY("unknown error code 0x%08X\n", purb->status); break;
+ SAM("unknown error code 0x%08X\n", purb->status);
+ break;
}
}
/*---------------------------------------------------------------------------*/
@@ -196,35 +229,43 @@ if (purb->status) {
if (peasycap->audio_isoc_streaming) {
rc = usb_submit_urb(purb, GFP_ATOMIC);
if (0 != rc) {
- SAY("ERROR: while %i=audio_idle, usb_submit_urb() "
+ SAM("ERROR: while %i=audio_idle, usb_submit_urb() "
"failed with rc:\n", peasycap->audio_idle);
switch (rc) {
case -ENOMEM: {
- SAY("ENOMEM\n"); break;
+ SAM("-ENOMEM\n");
+ break;
}
case -ENODEV: {
- SAY("ENODEV\n"); break;
+ SAM("-ENODEV\n");
+ break;
}
case -ENXIO: {
- SAY("ENXIO\n"); break;
+ SAM("-ENXIO\n");
+ break;
}
case -EINVAL: {
- SAY("EINVAL\n"); break;
+ SAM("-EINVAL\n");
+ break;
}
case -EAGAIN: {
- SAY("EAGAIN\n"); break;
+ SAM("-EAGAIN\n");
+ break;
}
case -EFBIG: {
- SAY("EFBIG\n"); break;
+ SAM("-EFBIG\n");
+ break;
}
case -EPIPE: {
- SAY("EPIPE\n"); break;
+ SAM("-EPIPE\n");
+ break;
}
case -EMSGSIZE: {
- SAY("EMSGSIZE\n"); break;
+ SAM("-EMSGSIZE\n");
+ break;
}
default: {
- SAY("0x%08X\n", rc); break;
+ SAM("0x%08X\n", rc); break;
}
}
}
@@ -243,72 +284,80 @@ oldaudio = peasycap->oldaudio;
for (i = 0; i < purb->number_of_packets; i++) {
switch (purb->iso_frame_desc[i].status) {
case 0: {
- strcpy(&errbuf[0], "OK"); break;
+ break;
}
case -ENOENT: {
- strcpy(&errbuf[0], "-ENOENT"); break;
+ SAM("-ENOENT\n");
+ break;
}
case -EINPROGRESS: {
- strcpy(&errbuf[0], "-EINPROGRESS"); break;
+ SAM("-EINPROGRESS\n");
+ break;
}
case -EPROTO: {
- strcpy(&errbuf[0], "-EPROTO"); break;
+ SAM("-EPROTO\n");
+ break;
}
case -EILSEQ: {
- strcpy(&errbuf[0], "-EILSEQ"); break;
+ SAM("-EILSEQ\n");
+ break;
}
case -ETIME: {
- strcpy(&errbuf[0], "-ETIME"); break;
+ SAM("-ETIME\n");
+ break;
}
case -ETIMEDOUT: {
- strcpy(&errbuf[0], "-ETIMEDOUT"); break;
+ SAM("-ETIMEDOUT\n");
+ break;
}
case -EPIPE: {
- strcpy(&errbuf[0], "-EPIPE"); break;
+ SAM("-EPIPE\n");
+ break;
}
case -ECOMM: {
- strcpy(&errbuf[0], "-ECOMM"); break;
+ SAM("-ECOMM\n");
+ break;
}
case -ENOSR: {
- strcpy(&errbuf[0], "-ENOSR"); break;
+ SAM("-ENOSR\n");
+ break;
}
case -EOVERFLOW: {
- strcpy(&errbuf[0], "-EOVERFLOW"); break;
+ SAM("-EOVERFLOW\n");
+ break;
}
case -EREMOTEIO: {
- strcpy(&errbuf[0], "-EREMOTEIO"); break;
+ SAM("-EREMOTEIO\n");
+ break;
}
case -ENODEV: {
- strcpy(&errbuf[0], "-ENODEV"); break;
+ SAM("-ENODEV\n");
+ break;
}
case -EXDEV: {
- strcpy(&errbuf[0], "-EXDEV"); break;
+ SAM("-EXDEV\n");
+ break;
}
case -EINVAL: {
- strcpy(&errbuf[0], "-EINVAL"); break;
+ SAM("-EINVAL\n");
+ break;
}
case -ECONNRESET: {
- strcpy(&errbuf[0], "-ECONNRESET"); break;
+ SAM("-ECONNRESET\n");
+ break;
}
case -ENOSPC: {
- strcpy(&errbuf[0], "-ENOSPC"); break;
+ SAM("-ENOSPC\n");
+ break;
}
case -ESHUTDOWN: {
- strcpy(&errbuf[0], "-ESHUTDOWN"); break;
+ SAM("-ESHUTDOWN\n");
+ break;
}
default: {
- strcpy(&errbuf[0], "UNKNOWN"); break;
- }
+ SAM("unknown error:0x%08X\n", purb->iso_frame_desc[i].status);
+ break;
}
- if ((!purb->iso_frame_desc[i].status) && 0) {
- JOT(16, "frame[%2i]: %i=status{=%16s} " \
- "%5i=actual " \
- "%5i=length " \
- "%3i=offset\n", \
- i, purb->iso_frame_desc[i].status, &errbuf[0],
- purb->iso_frame_desc[i].actual_length,
- purb->iso_frame_desc[i].length,
- purb->iso_frame_desc[i].offset);
}
if (!purb->iso_frame_desc[i].status) {
more = purb->iso_frame_desc[i].actual_length;
@@ -319,11 +368,12 @@ for (i = 0; i < purb->number_of_packets; i++) {
#endif
if (!more)
- mt++;
+ peasycap->audio_mt++;
else {
- if (mt) {
- JOT(16, "%4i empty audio urb frames\n", mt);
- mt = 0;
+ if (peasycap->audio_mt) {
+ JOM(16, "%4i empty audio urb frames\n", \
+ peasycap->audio_mt);
+ peasycap->audio_mt = 0;
}
p1 = (__u8 *)(purb->transfer_buffer + \
@@ -340,13 +390,13 @@ for (i = 0; i < purb->number_of_packets; i++) {
/*---------------------------------------------------------------------------*/
while (more) {
if (0 > more) {
- SAY("easysnd_complete: MISTAKE: " \
+ SAM("easysnd_complete: MISTAKE: " \
"more is negative\n");
return;
}
if (peasycap->audio_buffer_page_many <= \
peasycap->audio_fill) {
- SAY("ERROR: bad " \
+ SAM("ERROR: bad " \
"peasycap->audio_fill\n");
return;
}
@@ -355,7 +405,7 @@ for (i = 0; i < purb->number_of_packets; i++) {
[peasycap->audio_fill];
if (PAGE_SIZE < (paudio_buffer->pto - \
paudio_buffer->pgo)) {
- SAY("ERROR: bad paudio_buffer->pto\n");
+ SAM("ERROR: bad paudio_buffer->pto\n");
return;
}
if (PAGE_SIZE == (paudio_buffer->pto - \
@@ -374,7 +424,7 @@ for (i = 0; i < purb->number_of_packets; i++) {
peasycap->audio_fill)
peasycap->audio_fill = 0;
- JOT(12, "bumped peasycap->" \
+ JOM(12, "bumped peasycap->" \
"audio_fill to %i\n", \
peasycap->audio_fill);
@@ -387,7 +437,7 @@ for (i = 0; i < purb->number_of_packets; i++) {
if (!(peasycap->audio_fill % \
peasycap->\
audio_pages_per_fragment)) {
- JOT(12, "wakeup call on wq_" \
+ JOM(12, "wakeup call on wq_" \
"audio, %i=frag reading %i" \
"=fragment fill\n", \
(peasycap->audio_read / \
@@ -414,7 +464,7 @@ for (i = 0; i < purb->number_of_packets; i++) {
} else {
#if defined(UPSAMPLE)
if (much % 16)
- JOT(8, "MISTAKE? much" \
+ JOM(8, "MISTAKE? much" \
" is not divisible by 16\n");
if (much > (16 * \
more))
@@ -468,7 +518,7 @@ for (i = 0; i < purb->number_of_packets; i++) {
}
}
} else {
- JOT(12, "discarding audio samples because " \
+ JOM(12, "discarding audio samples because " \
"%i=purb->iso_frame_desc[i].status\n", \
purb->iso_frame_desc[i].status);
}
@@ -486,38 +536,50 @@ peasycap->oldaudio = oldaudio;
if (peasycap->audio_isoc_streaming) {
rc = usb_submit_urb(purb, GFP_ATOMIC);
if (0 != rc) {
- SAY("ERROR: while %i=audio_idle, usb_submit_urb() failed " \
+ if (-ENODEV != rc) {
+ SAM("ERROR: while %i=audio_idle, " \
+ "usb_submit_urb() failed " \
"with rc:\n", peasycap->audio_idle);
+ }
switch (rc) {
case -ENOMEM: {
- SAY("ENOMEM\n"); break;
+ SAM("-ENOMEM\n");
+ break;
}
case -ENODEV: {
- SAY("ENODEV\n"); break;
+ break;
}
case -ENXIO: {
- SAY("ENXIO\n"); break;
+ SAM("-ENXIO\n");
+ break;
}
case -EINVAL: {
- SAY("EINVAL\n"); break;
+ SAM("-EINVAL\n");
+ break;
}
case -EAGAIN: {
- SAY("EAGAIN\n"); break;
+ SAM("-EAGAIN\n");
+ break;
}
case -EFBIG: {
- SAY("EFBIG\n"); break;
+ SAM("-EFBIG\n");
+ break;
}
case -EPIPE: {
- SAY("EPIPE\n"); break;
+ SAM("-EPIPE\n");
+ break;
}
case -EMSGSIZE: {
- SAY("EMSGSIZE\n"); break;
+ SAM("-EMSGSIZE\n");
+ break;
}
case -ENOSPC: {
- SAY("ENOSPC\n"); break;
+ SAM("-ENOSPC\n");
+ break;
}
default: {
- SAY("0x%08X\n", rc); break;
+ SAM("unknown error: 0x%08X\n", rc);
+ break;
}
}
}
@@ -529,8 +591,7 @@ return;
/*
* THE AUDIO URBS ARE SUBMITTED AT THIS EARLY STAGE SO THAT IT IS POSSIBLE TO
* STREAM FROM /dev/easysnd1 WITH SIMPLE PROGRAMS SUCH AS cat WHICH DO NOT
- * HAVE AN IOCTL INTERFACE. THE VIDEO URBS, BY CONTRAST, MUST BE SUBMITTED
- * MUCH LATER: SEE COMMENTS IN FILE easycap_main.c.
+ * HAVE AN IOCTL INTERFACE.
*/
/*---------------------------------------------------------------------------*/
int
@@ -539,8 +600,15 @@ easysnd_open(struct inode *inode, struct file *file)
struct usb_interface *pusb_interface;
struct easycap *peasycap;
int subminor, rc;
+/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
+#if defined(EASYCAP_IS_VIDEODEV_CLIENT)
+#if defined(EASYCAP_NEEDS_V4L2_DEVICE_H)
+struct v4l2_device *pv4l2_device;
+#endif /*EASYCAP_NEEDS_V4L2_DEVICE_H*/
+#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
+/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
-JOT(4, "begins.\n");
+JOT(4, "begins\n");
subminor = iminor(inode);
@@ -556,70 +624,90 @@ if (NULL == peasycap) {
SAY("ending unsuccessfully\n");
return -1;
}
+/*---------------------------------------------------------------------------*/
+#if (!defined(EASYCAP_IS_VIDEODEV_CLIENT))
+#
+/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
+#else
+#if defined(EASYCAP_NEEDS_V4L2_DEVICE_H)
+/*---------------------------------------------------------------------------*/
+/*
+ * 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 ((struct v4l2_device *)NULL == pv4l2_device) {
+ SAY("ERROR: pv4l2_device is NULL\n");
+ return -EFAULT;
+ }
+ peasycap = (struct easycap *) \
+ container_of(pv4l2_device, struct easycap, v4l2_device);
+}
+#endif /*EASYCAP_NEEDS_V4L2_DEVICE_H*/
+#
+#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
+/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
+/*---------------------------------------------------------------------------*/
+if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
+ SAY("ERROR: bad peasycap: 0x%08lX\n", (unsigned long int) peasycap);
+ return -EFAULT;
+}
+/*---------------------------------------------------------------------------*/
file->private_data = peasycap;
/*---------------------------------------------------------------------------*/
/*
- * INITIALIZATION.
+ * INITIALIZATION
*/
/*---------------------------------------------------------------------------*/
-JOT(4, "starting initialization\n");
+JOM(4, "starting initialization\n");
if ((struct usb_device *)NULL == peasycap->pusb_device) {
- SAY("ERROR: peasycap->pusb_device is NULL\n");
- return -EFAULT;
-} else {
- JOT(16, "0x%08lX=peasycap->pusb_device\n", \
- (long int)peasycap->pusb_device);
+ SAM("ERROR: peasycap->pusb_device is NULL\n");
+ return -ENODEV;
}
+JOM(16, "0x%08lX=peasycap->pusb_device\n", (long int)peasycap->pusb_device);
rc = audio_setup(peasycap);
if (0 <= rc)
- JOT(8, "audio_setup() returned %i\n", rc);
+ JOM(8, "audio_setup() returned %i\n", rc);
else
- JOT(8, "easysnd open(): ERROR: audio_setup() returned %i\n", rc);
+ JOM(8, "easysnd open(): ERROR: audio_setup() returned %i\n", rc);
if ((struct usb_device *)NULL == peasycap->pusb_device) {
- SAY("ERROR: peasycap->pusb_device has become NULL\n");
- return -EFAULT;
-}
-rc = adjust_volume(peasycap, -8192);
-if (0 != rc) {
- SAY("ERROR: adjust_volume(default) returned %i\n", rc);
- return -EFAULT;
+ SAM("ERROR: peasycap->pusb_device has become NULL\n");
+ return -ENODEV;
}
/*---------------------------------------------------------------------------*/
if ((struct usb_device *)NULL == peasycap->pusb_device) {
- SAY("ERROR: peasycap->pusb_device has become NULL\n");
- return -EFAULT;
+ SAM("ERROR: peasycap->pusb_device has become NULL\n");
+ return -ENODEV;
}
rc = usb_set_interface(peasycap->pusb_device, peasycap->audio_interface, \
peasycap->audio_altsetting_on);
-JOT(8, "usb_set_interface(.,%i,%i) returned %i\n", peasycap->audio_interface, \
+JOM(8, "usb_set_interface(.,%i,%i) returned %i\n", peasycap->audio_interface, \
peasycap->audio_altsetting_on, rc);
-if ((struct usb_device *)NULL == peasycap->pusb_device) {
- SAY("ERROR: peasycap->pusb_device has become NULL\n");
- return -EFAULT;
-}
rc = wakeup_device(peasycap->pusb_device);
if (0 == rc)
- JOT(8, "wakeup_device() returned %i\n", rc);
+ JOM(8, "wakeup_device() returned %i\n", rc);
else
- JOT(8, "easysnd open(): ERROR: wakeup_device() returned %i\n", rc);
+ JOM(8, "ERROR: wakeup_device() returned %i\n", rc);
-if ((struct usb_device *)NULL == peasycap->pusb_device) {
- SAY("ERROR: peasycap->pusb_device has become NULL\n");
- return -EFAULT;
-}
-submit_audio_urbs(peasycap);
+peasycap->audio_eof = 0;
peasycap->audio_idle = 0;
peasycap->timeval1.tv_sec = 0;
peasycap->timeval1.tv_usec = 0;
-JOT(4, "finished initialization\n");
+submit_audio_urbs(peasycap);
+
+JOM(4, "finished initialization\n");
return 0;
}
/*****************************************************************************/
@@ -635,11 +723,15 @@ if (NULL == peasycap) {
SAY("ERROR: peasycap is NULL.\n");
return -EFAULT;
}
+if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
+ SAY("ERROR: bad peasycap: 0x%08lX\n", (unsigned long int) peasycap);
+ return -EFAULT;
+}
if (0 != kill_audio_urbs(peasycap)) {
- SAY("ERROR: kill_audio_urbs() failed\n");
+ SAM("ERROR: kill_audio_urbs() failed\n");
return -EFAULT;
}
-JOT(4, "ending successfully\n");
+JOM(4, "ending successfully\n");
return 0;
}
/*****************************************************************************/
@@ -648,12 +740,11 @@ easysnd_read(struct file *file, char __user *puserspacebuffer, \
size_t kount, loff_t *poff)
{
struct timeval timeval;
-static struct timeval timeval1;
-static long long int audio_bytes, above, below, mean;
+long long int above, below, mean;
struct signed_div_result sdr;
unsigned char *p0;
long int kount1, more, rc, l0, lm;
-int fragment;
+int fragment, kd;
struct easycap *peasycap;
struct data_buffer *pdata_buffer;
size_t szret;
@@ -671,23 +762,89 @@ size_t szret;
JOT(8, "===== easysnd_read(): kount=%i, *poff=%i\n", (int)kount, (int)(*poff));
-peasycap = (struct easycap *)(file->private_data);
+if (NULL == file) {
+ SAY("ERROR: file is NULL\n");
+ return -ERESTARTSYS;
+}
+peasycap = file->private_data;
if (NULL == peasycap) {
SAY("ERROR in easysnd_read(): peasycap is NULL\n");
return -EFAULT;
}
+if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
+ SAY("ERROR: bad peasycap: 0x%08lX\n", (unsigned long int) peasycap);
+ return -EFAULT;
+}
+if (NULL == peasycap->pusb_device) {
+ SAY("ERROR in easysnd_read(): peasycap->pusb_device is NULL\n");
+ return -EFAULT;
+}
+kd = isdongle(peasycap);
+if (0 <= kd && DONGLE_MANY > kd) {
+ if (mutex_lock_interruptible(&(easycap_dongle[kd].mutex_audio))) {
+ SAY("ERROR: cannot lock easycap_dongle[%i].mutex_audio\n", kd);
+ return -ERESTARTSYS;
+ }
+ JOM(4, "locked easycap_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 (NULL == file) {
+ SAY("ERROR: file is NULL\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
+ return -ERESTARTSYS;
+ }
+ peasycap = file->private_data;
+ if (NULL == peasycap) {
+ SAY("ERROR: peasycap is NULL\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
+ return -ERESTARTSYS;
+ }
+ if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
+ SAY("ERROR: bad peasycap: 0x%08lX\n", \
+ (unsigned long int) peasycap);
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
+ return -ERESTARTSYS;
+ }
+ if (NULL == peasycap->pusb_device) {
+ SAM("ERROR: peasycap->pusb_device is NULL\n");
+ mutex_unlock(&easycap_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;
+}
+/*---------------------------------------------------------------------------*/
+if (file->f_flags & O_NONBLOCK)
+ JOT(16, "NONBLOCK kount=%i, *poff=%i\n", (int)kount, (int)(*poff));
+else
+ JOT(8, "BLOCKING kount=%i, *poff=%i\n", (int)kount, (int)(*poff));
+
if ((0 > peasycap->audio_read) || \
(peasycap->audio_buffer_page_many <= peasycap->audio_read)) {
- SAY("ERROR: peasycap->audio_read out of range\n");
+ SAM("ERROR: peasycap->audio_read out of range\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EFAULT;
}
pdata_buffer = &peasycap->audio_buffer[peasycap->audio_read];
if ((struct data_buffer *)NULL == pdata_buffer) {
- SAY("ERROR: pdata_buffer is NULL\n");
+ SAM("ERROR: pdata_buffer is NULL\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EFAULT;
}
-JOT(12, "before wait, %i=frag read %i=frag fill\n", \
+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);
@@ -695,7 +852,8 @@ 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) {
- JOT(16, "returning -EAGAIN as instructed\n");
+ JOM(16, "returning -EAGAIN as instructed\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EAGAIN;
}
rc = wait_event_interruptible(peasycap->wq_audio, \
@@ -704,50 +862,56 @@ while ((fragment == (peasycap->audio_fill / \
peasycap->audio_pages_per_fragment)) && \
(0 < (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo))))));
if (0 != rc) {
- SAY("aborted by signal\n");
+ SAM("aborted by signal\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -ERESTARTSYS;
}
if (peasycap->audio_eof) {
- JOT(8, "returning 0 because %i=audio_eof\n", \
+ JOM(8, "returning 0 because %i=audio_eof\n", \
peasycap->audio_eof);
kill_audio_urbs(peasycap);
- msleep(500);
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return 0;
}
if (peasycap->audio_idle) {
- JOT(16, "returning 0 because %i=audio_idle\n", \
+ JOM(16, "returning 0 because %i=audio_idle\n", \
peasycap->audio_idle);
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return 0;
}
if (!peasycap->audio_isoc_streaming) {
- JOT(16, "returning 0 because audio urbs not streaming\n");
+ JOM(16, "returning 0 because audio urbs not streaming\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return 0;
}
}
-JOT(12, "after wait, %i=frag read %i=frag fill\n", \
+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;
while (fragment == (peasycap->audio_read / \
peasycap->audio_pages_per_fragment)) {
if (NULL == pdata_buffer->pgo) {
- SAY("ERROR: pdata_buffer->pgo is NULL\n");
+ SAM("ERROR: pdata_buffer->pgo is NULL\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EFAULT;
}
if (NULL == pdata_buffer->pto) {
- SAY("ERROR: pdata_buffer->pto is NULL\n");
+ SAM("ERROR: pdata_buffer->pto is NULL\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EFAULT;
}
kount1 = PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo);
if (0 > kount1) {
- SAY("easysnd_read: MISTAKE: kount1 is negative\n");
+ SAM("easysnd_read: MISTAKE: kount1 is negative\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -ERESTARTSYS;
}
if (!kount1) {
(peasycap->audio_read)++;
if (peasycap->audio_buffer_page_many <= peasycap->audio_read)
peasycap->audio_read = 0;
- JOT(12, "bumped peasycap->audio_read to %i\n", \
+ JOM(12, "bumped peasycap->audio_read to %i\n", \
peasycap->audio_read);
if (fragment != (peasycap->audio_read / \
@@ -757,30 +921,34 @@ while (fragment == (peasycap->audio_read / \
if ((0 > peasycap->audio_read) || \
(peasycap->audio_buffer_page_many <= \
peasycap->audio_read)) {
- SAY("ERROR: peasycap->audio_read out of range\n");
+ SAM("ERROR: peasycap->audio_read out of range\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EFAULT;
}
pdata_buffer = &peasycap->audio_buffer[peasycap->audio_read];
if ((struct data_buffer *)NULL == pdata_buffer) {
- SAY("ERROR: pdata_buffer is NULL\n");
+ SAM("ERROR: pdata_buffer is NULL\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EFAULT;
}
if (NULL == pdata_buffer->pgo) {
- SAY("ERROR: pdata_buffer->pgo is NULL\n");
+ SAM("ERROR: pdata_buffer->pgo is NULL\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EFAULT;
}
if (NULL == pdata_buffer->pto) {
- SAY("ERROR: pdata_buffer->pto is NULL\n");
+ SAM("ERROR: pdata_buffer->pto is NULL\n");
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EFAULT;
}
kount1 = PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo);
}
- JOT(12, "ready to send %li bytes\n", (long int) kount1);
- JOT(12, "still to send %li bytes\n", (long int) kount);
+ JOM(12, "ready to send %li bytes\n", (long int) kount1);
+ JOM(12, "still to send %li bytes\n", (long int) kount);
more = kount1;
if (more > kount)
more = kount;
- JOT(12, "agreed to send %li bytes from page %i\n", \
+ JOM(12, "agreed to send %li bytes from page %i\n", \
more, peasycap->audio_read);
if (!more)
break;
@@ -798,7 +966,8 @@ while (fragment == (peasycap->audio_read / \
/*---------------------------------------------------------------------------*/
rc = copy_to_user(puserspacebuffer, pdata_buffer->pto, more);
if (0 != rc) {
- SAY("ERROR: copy_to_user() returned %li\n", rc);
+ SAM("ERROR: copy_to_user() returned %li\n", rc);
+ mutex_unlock(&easycap_dongle[kd].mutex_audio);
return -EFAULT;
}
*poff += (loff_t)more;
@@ -807,11 +976,11 @@ while (fragment == (peasycap->audio_read / \
puserspacebuffer += more;
kount -= (size_t)more;
}
-JOT(12, "after read, %i=frag read %i=frag fill\n", \
+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) {
- SAY("MISTAKE: %li=kount %li=szret\n", \
+ SAM("MISTAKE: %li=kount %li=szret\n", \
(long int)kount, (long int)szret);
}
/*---------------------------------------------------------------------------*/
@@ -827,11 +996,11 @@ if (peasycap->audio_sample) {
mean = peasycap->audio_niveau;
sdr = signed_div(mean, peasycap->audio_sample);
- JOT(8, "%8lli=mean %8lli=meansquare after %lli samples, =>\n", \
+ JOM(8, "%8lli=mean %8lli=meansquare after %lli samples, =>\n", \
sdr.quotient, above, peasycap->audio_sample);
sdr = signed_div(above, 32768);
- JOT(8, "audio dynamic range is roughly %lli\n", sdr.quotient);
+ JOM(8, "audio dynamic range is roughly %lli\n", sdr.quotient);
}
/*---------------------------------------------------------------------------*/
/*
@@ -840,33 +1009,28 @@ if (peasycap->audio_sample) {
/*---------------------------------------------------------------------------*/
do_gettimeofday(&timeval);
if (!peasycap->timeval1.tv_sec) {
- audio_bytes = 0;
- timeval1 = timeval;
-
- if (mutex_lock_interruptible(&(peasycap->mutex_timeval1)))
- return -ERESTARTSYS;
- peasycap->timeval1 = timeval1;
- mutex_unlock(&(peasycap->mutex_timeval1));
+ peasycap->audio_bytes = 0;
+ peasycap->timeval3 = timeval;
+ peasycap->timeval1 = peasycap->timeval3;
sdr.quotient = 192000;
} else {
- audio_bytes += (long long int) szret;
+ peasycap->audio_bytes += (long long int) szret;
below = ((long long int)(1000000)) * \
- ((long long int)(timeval.tv_sec - timeval1.tv_sec)) + \
- (long long int)(timeval.tv_usec - timeval1.tv_usec);
- above = 1000000 * ((long long int) audio_bytes);
+ ((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;
}
-JOT(8, "audio streaming at %lli bytes/second\n", sdr.quotient);
-if (mutex_lock_interruptible(&(peasycap->mutex_timeval1)))
- return -ERESTARTSYS;
+JOM(8, "audio streaming at %lli bytes/second\n", sdr.quotient);
peasycap->dnbydt = sdr.quotient;
-mutex_unlock(&(peasycap->mutex_timeval1));
-JOT(8, "returning %li\n", (long int)szret);
+JOM(8, "returning %li\n", (long int)szret);
+mutex_unlock(&easycap_dongle[kd].mutex_audio);
return szret;
}
/*****************************************************************************/
@@ -881,27 +1045,31 @@ submit_audio_urbs(struct easycap *peasycap)
struct data_urb *pdata_urb;
struct urb *purb;
struct list_head *plist_head;
-int j, isbad, m, rc;
+int j, isbad, nospc, m, rc;
int isbuf;
+if (NULL == peasycap) {
+ SAY("ERROR: peasycap is NULL\n");
+ return -EFAULT;
+}
if ((struct list_head *)NULL == peasycap->purb_audio_head) {
- SAY("ERROR: peasycap->urb_audio_head uninitialized\n");
+ SAM("ERROR: peasycap->urb_audio_head uninitialized\n");
return -EFAULT;
}
if ((struct usb_device *)NULL == peasycap->pusb_device) {
- SAY("ERROR: peasycap->pusb_device is NULL\n");
+ SAM("ERROR: peasycap->pusb_device is NULL\n");
return -EFAULT;
}
if (!peasycap->audio_isoc_streaming) {
- JOT(4, "initial submission of all audio urbs\n");
+ JOM(4, "initial submission of all audio urbs\n");
rc = usb_set_interface(peasycap->pusb_device,
peasycap->audio_interface, \
peasycap->audio_altsetting_on);
- JOT(8, "usb_set_interface(.,%i,%i) returned %i\n", \
+ JOM(8, "usb_set_interface(.,%i,%i) returned %i\n", \
peasycap->audio_interface, \
peasycap->audio_altsetting_on, rc);
- isbad = 0; m = 0;
+ isbad = 0; nospc = 0; m = 0;
list_for_each(plist_head, (peasycap->purb_audio_head)) {
pdata_urb = list_entry(plist_head, struct data_urb, list_head);
if (NULL != pdata_urb) {
@@ -938,39 +1106,49 @@ if (!peasycap->audio_isoc_streaming) {
rc = usb_submit_urb(purb, GFP_KERNEL);
if (0 != rc) {
isbad++;
- SAY("ERROR: usb_submit_urb() failed" \
+ SAM("ERROR: usb_submit_urb() failed" \
" for urb with rc:\n");
switch (rc) {
case -ENOMEM: {
- SAY("ENOMEM\n"); break;
+ SAM("-ENOMEM\n");
+ break;
}
case -ENODEV: {
- SAY("ENODEV\n"); break;
+ SAM("-ENODEV\n");
+ break;
}
case -ENXIO: {
- SAY("ENXIO\n"); break;
+ SAM("-ENXIO\n");
+ break;
}
case -EINVAL: {
- SAY("EINVAL\n"); break;
+ SAM("-EINVAL\n");
+ break;
}
case -EAGAIN: {
- SAY("EAGAIN\n"); break;
+ SAM("-EAGAIN\n");
+ break;
}
case -EFBIG: {
- SAY("EFBIG\n"); break;
+ SAM("-EFBIG\n");
+ break;
}
case -EPIPE: {
- SAY("EPIPE\n"); break;
+ SAM("-EPIPE\n");
+ break;
}
case -EMSGSIZE: {
- SAY("EMSGSIZE\n"); break;
+ SAM("-EMSGSIZE\n");
+ break;
}
case -ENOSPC: {
- SAY("ENOSPC\n"); break;
+ nospc++;
+ break;
}
default: {
- SAY("unknown error code %i\n",\
- rc); break;
+ SAM("unknown error code %i\n",\
+ rc);
+ break;
}
}
} else {
@@ -983,8 +1161,13 @@ if (!peasycap->audio_isoc_streaming) {
isbad++;
}
}
+ if (nospc) {
+ SAM("-ENOSPC=usb_submit_urb() for %i urbs\n", nospc);
+ SAM("..... possibly inadequate USB bandwidth\n");
+ peasycap->audio_eof = 1;
+ }
if (isbad) {
- JOT(4, "attempting cleanup instead of submitting\n");
+ JOM(4, "attempting cleanup instead of submitting\n");
list_for_each(plist_head, (peasycap->purb_audio_head)) {
pdata_urb = list_entry(plist_head, struct data_urb, \
list_head);
@@ -997,10 +1180,10 @@ if (!peasycap->audio_isoc_streaming) {
peasycap->audio_isoc_streaming = 0;
} else {
peasycap->audio_isoc_streaming = 1;
- JOT(4, "submitted %i audio urbs\n", m);
+ JOM(4, "submitted %i audio urbs\n", m);
}
} else
- JOT(4, "already streaming audio urbs\n");
+ JOM(4, "already streaming audio urbs\n");
return 0;
}
@@ -1017,10 +1200,14 @@ int m;
struct list_head *plist_head;
struct data_urb *pdata_urb;
+if (NULL == peasycap) {
+ SAY("ERROR: peasycap is NULL\n");
+ return -EFAULT;
+}
if (peasycap->audio_isoc_streaming) {
if ((struct list_head *)NULL != peasycap->purb_audio_head) {
peasycap->audio_isoc_streaming = 0;
- JOT(4, "killing audio urbs\n");
+ JOM(4, "killing audio urbs\n");
m = 0;
list_for_each(plist_head, (peasycap->purb_audio_head)) {
pdata_urb = list_entry(plist_head, struct data_urb,
@@ -1032,13 +1219,13 @@ if (peasycap->audio_isoc_streaming) {
}
}
}
- JOT(4, "%i audio urbs killed\n", m);
+ JOM(4, "%i audio urbs killed\n", m);
} else {
- SAY("ERROR: peasycap->purb_audio_head is NULL\n");
+ SAM("ERROR: peasycap->purb_audio_head is NULL\n");
return -EFAULT;
}
} else {
- JOT(8, "%i=audio_isoc_streaming, no audio urbs killed\n", \
+ JOM(8, "%i=audio_isoc_streaming, no audio urbs killed\n", \
peasycap->audio_isoc_streaming);
}
return 0;
generated by cgit v1.1 at 2024-05-26 16:43:15 +0000