diff options
Diffstat (limited to 'drivers/staging/media/easycap/easycap_main.c')
| -rw-r--r-- | drivers/staging/media/easycap/easycap_main.c | 4239 |
1 files changed, 0 insertions, 4239 deletions
diff --git a/drivers/staging/media/easycap/easycap_main.c b/drivers/staging/media/easycap/easycap_main.c deleted file mode 100644 index 8269c77dbf7d..000000000000 --- a/drivers/staging/media/easycap/easycap_main.c +++ /dev/null @@ -1,4239 +0,0 @@ -/****************************************************************************** -* * -* easycap_main.c * -* * -* Video 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" -#include <linux/usb/audio.h> - - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("R.M. Thomas <rmthomas@sciolus.org>"); -MODULE_DESCRIPTION(EASYCAP_DRIVER_DESCRIPTION); -MODULE_VERSION(EASYCAP_DRIVER_VERSION); - -#ifdef CONFIG_EASYCAP_DEBUG -int easycap_debug; -module_param_named(debug, easycap_debug, int, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug level: 0(default),1,2,...,9"); -#endif /* CONFIG_EASYCAP_DEBUG */ - -bool easycap_readback; -module_param_named(readback, easycap_readback, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(readback, "read back written registers: (default false)"); - -static int easycap_bars = 1; -module_param_named(bars, easycap_bars, int, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(bars, - "Testcard bars on input signal failure: 0=>no, 1=>yes(default)"); - -static int easycap_gain = 16; -module_param_named(gain, easycap_gain, int, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(gain, "Audio gain: 0,...,16(default),...31"); - -static bool easycap_ntsc; -module_param_named(ntsc, easycap_ntsc, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(ntsc, "NTSC default encoding (default PAL)"); - - - -struct easycap_dongle easycapdc60_dongle[DONGLE_MANY]; -static struct mutex mutex_dongle; -static void easycap_complete(struct urb *purb); -static int reset(struct easycap *peasycap); -static int field2frame(struct easycap *peasycap); -static int redaub(struct easycap *peasycap, - void *pad, void *pex, int much, int more, - u8 mask, u8 margin, bool isuy); - -const char *strerror(int err) -{ -#define ERRNOSTR(_e) case _e: return # _e - switch (err) { - case 0: return "OK"; - ERRNOSTR(ENOMEM); - ERRNOSTR(ENODEV); - ERRNOSTR(ENXIO); - ERRNOSTR(EINVAL); - ERRNOSTR(EAGAIN); - ERRNOSTR(EFBIG); - ERRNOSTR(EPIPE); - ERRNOSTR(EMSGSIZE); - ERRNOSTR(ENOSPC); - ERRNOSTR(EINPROGRESS); - ERRNOSTR(ENOSR); - ERRNOSTR(EOVERFLOW); - ERRNOSTR(EPROTO); - ERRNOSTR(EILSEQ); - ERRNOSTR(ETIMEDOUT); - ERRNOSTR(EOPNOTSUPP); - ERRNOSTR(EPFNOSUPPORT); - ERRNOSTR(EAFNOSUPPORT); - ERRNOSTR(EADDRINUSE); - ERRNOSTR(EADDRNOTAVAIL); - ERRNOSTR(ENOBUFS); - ERRNOSTR(EISCONN); - ERRNOSTR(ENOTCONN); - ERRNOSTR(ESHUTDOWN); - ERRNOSTR(ENOENT); - ERRNOSTR(ECONNRESET); - ERRNOSTR(ETIME); - ERRNOSTR(ECOMM); - ERRNOSTR(EREMOTEIO); - ERRNOSTR(EXDEV); - ERRNOSTR(EPERM); - default: return "unknown"; - } - -#undef ERRNOSTR -} - -/****************************************************************************/ -/*---------------------------------------------------------------------------*/ -/* - * THIS ROUTINE DOES NOT DETECT DUPLICATE OCCURRENCES OF POINTER peasycap -*/ -/*---------------------------------------------------------------------------*/ -int easycap_isdongle(struct easycap *peasycap) -{ - int k; - if (!peasycap) - return -2; - for (k = 0; k < DONGLE_MANY; k++) { - if (easycapdc60_dongle[k].peasycap == peasycap) { - peasycap->isdongle = k; - return k; - } - } - return -1; -} -/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ -static int easycap_open(struct inode *inode, struct file *file) -{ - struct video_device *pvideo_device; - struct easycap *peasycap; - int rc; - - JOT(4, "\n"); - SAY("==========OPEN=========\n"); - - pvideo_device = video_devdata(file); - if (!pvideo_device) { - SAY("ERROR: pvideo_device is NULL.\n"); - return -EFAULT; - } - peasycap = (struct easycap *)video_get_drvdata(pvideo_device); - if (!peasycap) { - SAY("ERROR: peasycap is NULL\n"); - return -EFAULT; - } - if (!peasycap->pusb_device) { - SAM("ERROR: peasycap->pusb_device is NULL\n"); - return -EFAULT; - } - - JOM(16, "peasycap->pusb_device=%p\n", peasycap->pusb_device); - - file->private_data = peasycap; - rc = easycap_wakeup_device(peasycap->pusb_device); - if (rc) { - SAM("ERROR: wakeup_device() rc = %i\n", rc); - if (-ENODEV == rc) - SAM("ERROR: wakeup_device() returned -ENODEV\n"); - else - SAM("ERROR: wakeup_device() rc = %i\n", rc); - return rc; - } - JOM(8, "wakeup_device() OK\n"); - peasycap->input = 0; - rc = reset(peasycap); - if (rc) { - SAM("ERROR: reset() rc = %i\n", rc); - return -EFAULT; - } - return 0; -} - -/*****************************************************************************/ -/*---------------------------------------------------------------------------*/ -/* - * RESET THE HARDWARE TO ITS REFERENCE STATE. - * - * THIS ROUTINE MAY BE CALLED REPEATEDLY IF easycap_complete() DETECTS - * A BAD VIDEO FRAME SIZE. -*/ -/*---------------------------------------------------------------------------*/ -static int reset(struct easycap *peasycap) -{ - struct easycap_standard const *peasycap_standard; - int fmtidx, input, rate; - bool ntsc, other; - int rc; - - if (!peasycap) { - SAY("ERROR: peasycap is NULL\n"); - return -EFAULT; - } - input = peasycap->input; - -/*---------------------------------------------------------------------------*/ -/* - * IF THE SAA7113H HAS ALREADY ACQUIRED SYNC, USE ITS HARDWARE-DETECTED - * FIELD FREQUENCY TO DISTINGUISH NTSC FROM PAL. THIS IS ESSENTIAL FOR - * gstreamer AND OTHER USERSPACE PROGRAMS WHICH MAY NOT ATTEMPT TO INITIATE - * A SWITCH BETWEEN PAL AND NTSC. - * - * FUNCTION ready_saa() MAY REQUIRE A SUBSTANTIAL FRACTION OF A SECOND TO - * COMPLETE, SO SHOULD NOT BE INVOKED WITHOUT GOOD REASON. -*/ -/*---------------------------------------------------------------------------*/ - other = false; - JOM(8, "peasycap->ntsc=%d\n", peasycap->ntsc); - - rate = ready_saa(peasycap->pusb_device); - if (rate < 0) { - JOM(8, "not ready to capture after %i ms ...\n", PATIENCE); - ntsc = !peasycap->ntsc; - JOM(8, "... trying %s ..\n", ntsc ? "NTSC" : "PAL"); - rc = setup_stk(peasycap->pusb_device, ntsc); - if (rc) { - SAM("ERROR: setup_stk() rc = %i\n", rc); - return -EFAULT; - } - rc = setup_saa(peasycap->pusb_device, ntsc); - if (rc) { - SAM("ERROR: setup_saa() rc = %i\n", rc); - return -EFAULT; - } - - rate = ready_saa(peasycap->pusb_device); - if (rate < 0) { - JOM(8, "not ready to capture after %i ms\n", PATIENCE); - JOM(8, "... saa register 0x1F has 0x%02X\n", - read_saa(peasycap->pusb_device, 0x1F)); - ntsc = peasycap->ntsc; - } else { - JOM(8, "... success at second try: %i=rate\n", rate); - ntsc = (0 < (rate/2)) ? true : false ; - other = true; - } - } else { - JOM(8, "... success at first try: %i=rate\n", rate); - ntsc = (0 < rate/2) ? true : false ; - } - JOM(8, "ntsc=%d\n", ntsc); -/*---------------------------------------------------------------------------*/ - - rc = setup_stk(peasycap->pusb_device, ntsc); - if (rc) { - SAM("ERROR: setup_stk() rc = %i\n", rc); - return -EFAULT; - } - rc = setup_saa(peasycap->pusb_device, ntsc); - if (rc) { - SAM("ERROR: setup_saa() rc = %i\n", rc); - return -EFAULT; - } - - memset(peasycap->merit, 0, sizeof(peasycap->merit)); - - peasycap->video_eof = 0; - peasycap->audio_eof = 0; -/*---------------------------------------------------------------------------*/ -/* - * RESTORE INPUT AND FORCE REFRESH OF STANDARD, FORMAT, ETC. - * - * WHILE THIS PROCEDURE IS IN PROGRESS, SOME IOCTL COMMANDS WILL RETURN -EBUSY. -*/ -/*---------------------------------------------------------------------------*/ - peasycap->input = -8192; - peasycap->standard_offset = -8192; - fmtidx = ntsc ? NTSC_M : PAL_BGHIN; - if (other) { - peasycap_standard = &easycap_standard[0]; - while (0xFFFF != peasycap_standard->mask) { - if (fmtidx == peasycap_standard->v4l2_standard.index) { - peasycap->inputset[input].standard_offset = - peasycap_standard - easycap_standard; - break; - } - peasycap_standard++; - } - if (0xFFFF == peasycap_standard->mask) { - SAM("ERROR: standard not found\n"); - return -EINVAL; - } - JOM(8, "%i=peasycap->inputset[%i].standard_offset\n", - peasycap->inputset[input].standard_offset, input); - } - peasycap->format_offset = -8192; - peasycap->brightness = -8192; - peasycap->contrast = -8192; - peasycap->saturation = -8192; - peasycap->hue = -8192; - - rc = easycap_newinput(peasycap, input); - - if (rc) { - SAM("ERROR: newinput(.,%i) rc = %i\n", rc, input); - return -EFAULT; - } - JOM(4, "restored input, standard and format\n"); - - JOM(8, "true=peasycap->ntsc %d\n", peasycap->ntsc); - - if (0 > peasycap->input) { - SAM("MISTAKE: %i=peasycap->input\n", peasycap->input); - return -ENOENT; - } - if (0 > peasycap->standard_offset) { - SAM("MISTAKE: %i=peasycap->standard_offset\n", - peasycap->standard_offset); - return -ENOENT; - } - if (0 > peasycap->format_offset) { - SAM("MISTAKE: %i=peasycap->format_offset\n", - peasycap->format_offset); - return -ENOENT; - } - if (0 > peasycap->brightness) { - SAM("MISTAKE: %i=peasycap->brightness\n", - peasycap->brightness); - return -ENOENT; - } - if (0 > peasycap->contrast) { - SAM("MISTAKE: %i=peasycap->contrast\n", peasycap->contrast); - return -ENOENT; - } - if (0 > peasycap->saturation) { - SAM("MISTAKE: %i=peasycap->saturation\n", - peasycap->saturation); - return -ENOENT; - } - if (0 > peasycap->hue) { - SAM("MISTAKE: %i=peasycap->hue\n", peasycap->hue); - return -ENOENT; - } - return 0; -} -/*****************************************************************************/ -/*---------------------------------------------------------------------------*/ -/* - * IF THE REQUESTED INPUT IS THE SAME AS THE EXISTING INPUT, DO NOTHING. - * OTHERWISE: - * KILL URBS, CLEAR FIELD AND FRAME BUFFERS AND RESET THEIR - * _read AND _fill POINTERS. - * SELECT THE NEW INPUT. - * ADJUST THE STANDARD, FORMAT, BRIGHTNESS, CONTRAST, SATURATION AND HUE - * ON THE BASIS OF INFORMATION IN STRUCTURE easycap.inputset[input]. - * RESUBMIT THE URBS IF STREAMING WAS ALREADY IN PROGRESS. - * - * NOTE: - * THIS ROUTINE MAY BE CALLED FREQUENTLY BY ZONEMINDER VIA IOCTL, - * SO IT SHOULD WRITE ONLY SPARINGLY TO THE LOGFILE. -*/ -/*---------------------------------------------------------------------------*/ -int easycap_newinput(struct easycap *peasycap, int input) -{ - int rc, k, m, mood, off; - int inputnow, video_idlenow, audio_idlenow; - bool resubmit; - - if (!peasycap) { - SAY("ERROR: peasycap is NULL\n"); - return -EFAULT; - } - JOM(8, "%i=input sought\n", input); - - if (0 > input && INPUT_MANY <= input) - return -ENOENT; - inputnow = peasycap->input; - if (input == inputnow) - return 0; -/*---------------------------------------------------------------------------*/ -/* - * IF STREAMING IS IN PROGRESS THE URBS ARE KILLED AT THIS - * STAGE AND WILL BE RESUBMITTED PRIOR TO EXIT FROM THE ROUTINE. - * IF NO STREAMING IS IN PROGRESS NO URBS WILL BE SUBMITTED BY THE - * ROUTINE. -*/ -/*---------------------------------------------------------------------------*/ - video_idlenow = peasycap->video_idle; - audio_idlenow = peasycap->audio_idle; - - peasycap->video_idle = 1; - peasycap->audio_idle = 1; - if (peasycap->video_isoc_streaming) { - resubmit = true; - easycap_video_kill_urbs(peasycap); - } else { - resubmit = false; - } -/*---------------------------------------------------------------------------*/ - if (!peasycap->pusb_device) { - SAM("ERROR: peasycap->pusb_device is NULL\n"); - return -ENODEV; - } - rc = usb_set_interface(peasycap->pusb_device, - peasycap->video_interface, - peasycap->video_altsetting_off); - if (rc) { - SAM("ERROR: usb_set_interface() rc = %i\n", rc); - return -EFAULT; - } - rc = stop_100(peasycap->pusb_device); - if (rc) { - SAM("ERROR: stop_100() rc = %i\n", rc); - return -EFAULT; - } - for (k = 0; k < FIELD_BUFFER_MANY; k++) { - for (m = 0; m < FIELD_BUFFER_SIZE/PAGE_SIZE; m++) - memset(peasycap->field_buffer[k][m].pgo, 0, PAGE_SIZE); - } - for (k = 0; k < FRAME_BUFFER_MANY; k++) { - for (m = 0; m < FRAME_BUFFER_SIZE/PAGE_SIZE; m++) - memset(peasycap->frame_buffer[k][m].pgo, 0, PAGE_SIZE); - } - peasycap->field_page = 0; - peasycap->field_read = 0; - peasycap->field_fill = 0; - - peasycap->frame_read = 0; - peasycap->frame_fill = 0; - for (k = 0; k < peasycap->input; k++) { - (peasycap->frame_fill)++; - if (peasycap->frame_buffer_many <= peasycap->frame_fill) - peasycap->frame_fill = 0; - } - peasycap->input = input; - select_input(peasycap->pusb_device, peasycap->input, 9); -/*---------------------------------------------------------------------------*/ - if (input == peasycap->inputset[input].input) { - off = peasycap->inputset[input].standard_offset; - if (off != peasycap->standard_offset) { - rc = adjust_standard(peasycap, - easycap_standard[off].v4l2_standard.id); - if (rc) { - SAM("ERROR: adjust_standard() rc = %i\n", rc); - return -EFAULT; - } - JOM(8, "%i=peasycap->standard_offset\n", - peasycap->standard_offset); - } else { - JOM(8, "%i=peasycap->standard_offset unchanged\n", - peasycap->standard_offset); - } - off = peasycap->inputset[input].format_offset; - if (off != peasycap->format_offset) { - struct v4l2_pix_format *pix = - &easycap_format[off].v4l2_format.fmt.pix; - rc = adjust_format(peasycap, - pix->width, pix->height, - pix->pixelformat, pix->field, false); - if (0 > rc) { - SAM("ERROR: adjust_format() rc = %i\n", rc); - return -EFAULT; - } - JOM(8, "%i=peasycap->format_offset\n", - peasycap->format_offset); - } else { - JOM(8, "%i=peasycap->format_offset unchanged\n", - peasycap->format_offset); - } - mood = peasycap->inputset[input].brightness; - if (mood != peasycap->brightness) { - rc = adjust_brightness(peasycap, mood); - if (rc) { - SAM("ERROR: adjust_brightness rc = %i\n", rc); - return -EFAULT; - } - JOM(8, "%i=peasycap->brightness\n", - peasycap->brightness); - } - mood = peasycap->inputset[input].contrast; - if (mood != peasycap->contrast) { - rc = adjust_contrast(peasycap, mood); - if (rc) { - SAM("ERROR: adjust_contrast rc = %i\n", rc); - return -EFAULT; - } - JOM(8, "%i=peasycap->contrast\n", peasycap->contrast); - } - mood = peasycap->inputset[input].saturation; - if (mood != peasycap->saturation) { - rc = adjust_saturation(peasycap, mood); - if (rc) { - SAM("ERROR: adjust_saturation rc = %i\n", rc); - return -EFAULT; - } - JOM(8, "%i=peasycap->saturation\n", - peasycap->saturation); - } - mood = peasycap->inputset[input].hue; - if (mood != peasycap->hue) { - rc = adjust_hue(peasycap, mood); - if (rc) { - SAM("ERROR: adjust_hue rc = %i\n", rc); - return -EFAULT; - } - JOM(8, "%i=peasycap->hue\n", peasycap->hue); - } - } else { - SAM("MISTAKE: easycap.inputset[%i] unpopulated\n", input); - return -ENOENT; - } -/*---------------------------------------------------------------------------*/ - if (!peasycap->pusb_device) { - SAM("ERROR: peasycap->pusb_device is NULL\n"); - return -ENODEV; - } - rc = usb_set_interface(peasycap->pusb_device, - peasycap->video_interface, - peasycap->video_altsetting_on); - if (rc) { - SAM("ERROR: usb_set_interface() rc = %i\n", rc); - return -EFAULT; - } - rc = start_100(peasycap->pusb_device); - if (rc) { - SAM("ERROR: start_100() rc = %i\n", rc); - return -EFAULT; - } - if (resubmit) - easycap_video_submit_urbs(peasycap); - - peasycap->video_isoc_sequence = VIDEO_ISOC_BUFFER_MANY - 1; - peasycap->video_idle = video_idlenow; - peasycap->audio_idle = audio_idlenow; - peasycap->video_junk = 0; - - return 0; -} -/*****************************************************************************/ -int easycap_video_submit_urbs(struct easycap *peasycap) -{ - struct data_urb *pdata_urb; - struct urb *purb; - struct list_head *plist_head; - int j, isbad, nospc, m, rc; - int isbuf; - - if (!peasycap) { - SAY("ERROR: peasycap is NULL\n"); - return -EFAULT; - } - - if (!peasycap->purb_video_head) { - SAY("ERROR: peasycap->urb_video_head uninitialized\n"); - return -EFAULT; - } - if (!peasycap->pusb_device) { - SAY("ERROR: peasycap->pusb_device is NULL\n"); - return -ENODEV; - } - if (!peasycap->video_isoc_streaming) { - JOM(4, "submission of all video urbs\n"); - isbad = 0; nospc = 0; m = 0; - list_for_each(plist_head, (peasycap->purb_video_head)) { - pdata_urb = list_entry(plist_head, - struct data_urb, list_head); - if (pdata_urb && pdata_urb->purb) { - purb = pdata_urb->purb; - isbuf = pdata_urb->isbuf; - purb->interval = 1; - purb->dev = peasycap->pusb_device; - purb->pipe = - usb_rcvisocpipe(peasycap->pusb_device, - peasycap->video_endpointnumber); - purb->transfer_flags = URB_ISO_ASAP; - purb->transfer_buffer = - peasycap->video_isoc_buffer[isbuf].pgo; - purb->transfer_buffer_length = - peasycap->video_isoc_buffer_size; - purb->complete = easycap_complete; - purb->context = peasycap; - purb->start_frame = 0; - purb->number_of_packets = - peasycap->video_isoc_framesperdesc; - - for (j = 0; j < peasycap->video_isoc_framesperdesc; j++) { - purb->iso_frame_desc[j]. offset = - j * peasycap->video_isoc_maxframesize; - purb->iso_frame_desc[j]. length = - peasycap->video_isoc_maxframesize; - } - - rc = usb_submit_urb(purb, GFP_KERNEL); - if (rc) { - isbad++; - SAM("ERROR: usb_submit_urb() failed " - "for urb with rc:-%s\n", - strerror(rc)); - if (rc == -ENOSPC) - nospc++; - } else { - m++; - } - } else { - isbad++; - } - } - if (nospc) { - SAM("-ENOSPC=usb_submit_urb() for %i urbs\n", nospc); - SAM("..... possibly inadequate USB bandwidth\n"); - peasycap->video_eof = 1; - } - - if (isbad) - easycap_video_kill_urbs(peasycap); - else - peasycap->video_isoc_streaming = 1; - } else { - JOM(4, "already streaming video urbs\n"); - } - return 0; -} -/*****************************************************************************/ -int easycap_audio_kill_urbs(struct easycap *peasycap) -{ - int m; - struct list_head *plist_head; - struct data_urb *pdata_urb; - - if (!peasycap->audio_isoc_streaming) - return 0; - - if (!peasycap->purb_audio_head) { - SAM("ERROR: peasycap->purb_audio_head is NULL\n"); - return -EFAULT; - } - - peasycap->audio_isoc_streaming = 0; - m = 0; - list_for_each(plist_head, peasycap->purb_audio_head) { - pdata_urb = list_entry(plist_head, struct data_urb, list_head); - if (pdata_urb && pdata_urb->purb) { - usb_kill_urb(pdata_urb->purb); - m++; - } - } - - JOM(4, "%i audio urbs killed\n", m); - - return 0; -} -int easycap_video_kill_urbs(struct easycap *peasycap) -{ - int m; - struct list_head *plist_head; - struct data_urb *pdata_urb; - - if (!peasycap->video_isoc_streaming) - return 0; - - if (!peasycap->purb_video_head) { - SAM("ERROR: peasycap->purb_video_head is NULL\n"); - return -EFAULT; - } - - peasycap->video_isoc_streaming = 0; - JOM(4, "killing video urbs\n"); - m = 0; - list_for_each(plist_head, (peasycap->purb_video_head)) { - pdata_urb = list_entry(plist_head, struct data_urb, list_head); - if (pdata_urb && pdata_urb->purb) { - usb_kill_urb(pdata_urb->purb); - m++; - } - } - JOM(4, "%i video urbs killed\n", m); - - return 0; -} -/****************************************************************************/ -/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ -/*--------------------------------------------------------------------------*/ -static int easycap_open_noinode(struct file *file) -{ - return easycap_open(NULL, file); -} - -static int videodev_release(struct video_device *pvideo_device) -{ - struct easycap *peasycap; - - peasycap = video_get_drvdata(pvideo_device); - if (!peasycap) { - SAY("ERROR: peasycap is NULL\n"); - SAY("ending unsuccessfully\n"); - return -EFAULT; - } - if (easycap_video_kill_urbs(peasycap)) { - SAM("ERROR: easycap_video_kill_urbs() failed\n"); - return -EFAULT; - } - JOM(4, "ending successfully\n"); - return 0; -} - -/*****************************************************************************/ -static unsigned int easycap_poll(struct file *file, poll_table *wait) -{ - struct easycap *peasycap; - int rc, kd; - - JOT(8, "\n"); - - if (NULL == ((poll_table *)wait)) - JOT(8, "WARNING: poll table pointer is NULL ... continuing\n"); - if (!file) { - SAY("ERROR: file pointer is NULL\n"); - return -ERESTARTSYS; - } - peasycap = file->private_data; - if (!peasycap) { - SAY("ERROR: peasycap is NULL\n"); - return -EFAULT; - } - if (!peasycap->pusb_device) { - SAY("ERROR: peasycap->pusb_device is NULL\n"); - return -EFAULT; - } -/*---------------------------------------------------------------------------*/ - kd = easycap_isdongle(peasycap); - if (0 <= kd && DONGLE_MANY > kd) { - if (mutex_lock_interruptible(&easycapdc60_dongle[kd].mutex_video)) { - SAY("ERROR: cannot down dongle[%i].mutex_video\n", kd); - return -ERESTARTSYS; - } - JOM(4, "locked dongle[%i].mutex_video\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 != easycap_isdongle(peasycap)) { - mutex_unlock(&easycapdc60_dongle[kd].mutex_video); - return -ERESTARTSYS; - } - if (!file) { - SAY("ERROR: file is NULL\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_video); - return -ERESTARTSYS; - } - peasycap = file->private_data; - if (!peasycap) { - SAY("ERROR: peasycap is NULL\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_video); - return -ERESTARTSYS; - } - if (!peasycap->pusb_device) { - SAM("ERROR: peasycap->pusb_device is NULL\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_video); - 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; -/*---------------------------------------------------------------------------*/ - rc = easycap_video_dqbuf(peasycap, 0); - peasycap->polled = 1; - mutex_unlock(&easycapdc60_dongle[kd].mutex_video); - if (rc) - return POLLERR; - - return POLLIN | POLLRDNORM; -} -/*****************************************************************************/ -/*---------------------------------------------------------------------------*/ -/* - * IF mode IS NONZERO THIS ROUTINE RETURNS -EAGAIN RATHER THAN BLOCKING. - */ -/*---------------------------------------------------------------------------*/ -int easycap_video_dqbuf(struct easycap *peasycap, int mode) -{ - int input, ifield, miss, rc; - - - if (!peasycap) { - SAY("ERROR: peasycap is NULL\n"); - return -EFAULT; - } - if (!peasycap->pusb_device) { - SAY("ERROR: peasycap->pusb_device is NULL\n"); - return -EFAULT; - } - ifield = 0; - JOM(8, "%i=ifield\n", ifield); -/*---------------------------------------------------------------------------*/ -/* - * CHECK FOR LOST INPUT SIGNAL. - * - * FOR THE FOUR-CVBS EasyCAP, THIS DOES NOT WORK AS EXPECTED. - * IF INPUT 0 IS PRESENT AND SYNC ACQUIRED, UNPLUGGING INPUT 4 DOES NOT - * RESULT IN SETTING BIT 0x40 ON REGISTER 0x1F, PRESUMABLY BECAUSE THERE - * IS FLYWHEELING ON INPUT 0. THE UPSHOT IS: - * - * INPUT 0 PLUGGED, INPUT 4 PLUGGED => SCREEN 0 OK, SCREEN 4 OK - * INPUT 0 PLUGGED, INPUT 4 UNPLUGGED => SCREEN 0 OK, SCREEN 4 BLACK - * INPUT 0 UNPLUGGED, INPUT 4 PLUGGED => SCREEN 0 BARS, SCREEN 4 OK - * INPUT 0 UNPLUGGED, INPUT 4 UNPLUGGED => SCREEN 0 BARS, SCREEN 4 BARS -*/ -/*---------------------------------------------------------------------------*/ - input = peasycap->input; - if (0 <= input && INPUT_MANY > input) { - rc = read_saa(peasycap->pusb_device, 0x1F); - if (0 <= rc) { - if (rc & 0x40) - peasycap->lost[input] += 1; - else - peasycap->lost[input] -= 2; - - if (0 > peasycap->lost[input]) - peasycap->lost[input] = 0; - else if ((2 * VIDEO_LOST_TOLERATE) < peasycap->lost[input]) - peasycap->lost[input] = (2 * VIDEO_LOST_TOLERATE); - } - } -/*---------------------------------------------------------------------------*/ -/* - * WAIT FOR FIELD ifield (0 => TOP, 1 => BOTTOM) - */ -/*---------------------------------------------------------------------------*/ - miss = 0; - while ((peasycap->field_read == peasycap->field_fill) || - (0 != (0xFF00 & peasycap->field_buffer - [peasycap->field_read][0].kount)) || - (ifield != (0x00FF & peasycap->field_buffer - [peasycap->field_read][0].kount))) { - if (mode) - return -EAGAIN; - - JOM(8, "first wait on wq_video, %i=field_read %i=field_fill\n", - peasycap->field_read, peasycap->field_fill); - - if (0 != (wait_event_interruptible(peasycap->wq_video, - (peasycap->video_idle || peasycap->video_eof || - ((peasycap->field_read != peasycap->field_fill) && - (0 == (0xFF00 & peasycap->field_buffer[peasycap->field_read][0].kount)) && - (ifield == (0x00FF & peasycap->field_buffer[peasycap->field_read][0].kount))))))) { - SAM("aborted by signal\n"); - return -EIO; - } - if (peasycap->video_idle) { - JOM(8, "%i=peasycap->video_idle returning -EAGAIN\n", - peasycap->video_idle); - return -EAGAIN; - } - if (peasycap->video_eof) { - JOM(8, "%i=peasycap->video_eof\n", peasycap->video_eof); - #if defined(PERSEVERE) - if (1 == peasycap->status) { - JOM(8, "persevering ...\n"); - peasycap->video_eof = 0; - peasycap->audio_eof = 0; - if (0 != reset(peasycap)) { - JOM(8, " ... failed returning -EIO\n"); - peasycap->video_eof = 1; - peasycap->audio_eof = 1; - easycap_video_kill_urbs(peasycap); - return -EIO; - } - peasycap->status = 0; - JOM(8, " ... OK returning -EAGAIN\n"); - return -EAGAIN; - } - #endif /*PERSEVERE*/ - peasycap->video_eof = 1; - peasycap->audio_eof = 1; - easycap_video_kill_urbs(peasycap); - JOM(8, "returning -EIO\n"); - return -EIO; - } - miss++; - } - JOM(8, "first awakening on wq_video after %i waits\n", miss); - - rc = field2frame(peasycap); - if (rc) - SAM("ERROR: field2frame() rc = %i\n", rc); -/*---------------------------------------------------------------------------*/ -/* - * WAIT FOR THE OTHER FIELD - */ -/*---------------------------------------------------------------------------*/ - if (ifield) - ifield = 0; - else - ifield = 1; - miss = 0; - while ((peasycap->field_read == peasycap->field_fill) || - (0 != (0xFF00 & peasycap->field_buffer[peasycap->field_read][0].kount)) || - (ifield != (0x00FF & peasycap->field_buffer[peasycap->field_read][0].kount))) { - if (mode) - return -EAGAIN; - - JOM(8, "second wait on wq_video %i=field_read %i=field_fill\n", - peasycap->field_read, peasycap->field_fill); - if (0 != (wait_event_interruptible(peasycap->wq_video, - (peasycap->video_idle || peasycap->video_eof || - ((peasycap->field_read != peasycap->field_fill) && - (0 == (0xFF00 & peasycap->field_buffer[peasycap->field_read][0].kount)) && - (ifield == (0x00FF & peasycap->field_buffer[peasycap->field_read][0].kount))))))) { - SAM("aborted by signal\n"); - return -EIO; - } - if (peasycap->video_idle) { - JOM(8, "%i=peasycap->video_idle returning -EAGAIN\n", - peasycap->video_idle); - return -EAGAIN; - } - if (peasycap->video_eof) { - JOM(8, "%i=peasycap->video_eof\n", peasycap->video_eof); -#if defined(PERSEVERE) - if (1 == peasycap->status) { - JOM(8, "persevering ...\n"); - peasycap->video_eof = 0; - peasycap->audio_eof = 0; - if (0 != reset(peasycap)) { - JOM(8, " ... failed returning -EIO\n"); - peasycap->video_eof = 1; - peasycap->audio_eof = 1; - easycap_video_kill_urbs(peasycap); - return -EIO; - } - peasycap->status = 0; - JOM(8, " ... OK ... returning -EAGAIN\n"); - return -EAGAIN; - } -#endif /*PERSEVERE*/ - peasycap->video_eof = 1; - peasycap->audio_eof = 1; - easycap_video_kill_urbs(peasycap); - JOM(8, "returning -EIO\n"); - return -EIO; - } - miss++; - } - JOM(8, "second awakening on wq_video after %i waits\n", miss); - - rc = field2frame(peasycap); - if (rc) - SAM("ERROR: field2frame() rc = %i\n", rc); -/*---------------------------------------------------------------------------*/ -/* - * WASTE THIS FRAME -*/ -/*---------------------------------------------------------------------------*/ - if (peasycap->skip) { - peasycap->skipped++; - if (peasycap->skip != peasycap->skipped) - return peasycap->skip - peasycap->skipped; - else - peasycap->skipped = 0; - } -/*---------------------------------------------------------------------------*/ - peasycap->frame_read = peasycap->frame_fill; - peasycap->queued[peasycap->frame_read] = 0; - peasycap->done[peasycap->frame_read] = V4L2_BUF_FLAG_DONE; - - peasycap->frame_fill++; - if (peasycap->frame_buffer_many <= peasycap->frame_fill) - peasycap->frame_fill = 0; - - if (0x01 & easycap_standard[peasycap->standard_offset].mask) - peasycap->frame_buffer[peasycap->frame_read][0].kount = - V4L2_FIELD_TOP; - else - peasycap->frame_buffer[peasycap->frame_read][0].kount = - V4L2_FIELD_BOTTOM; - - - JOM(8, "setting: %i=peasycap->frame_read\n", peasycap->frame_read); - JOM(8, "bumped to: %i=peasycap->frame_fill\n", peasycap->frame_fill); - - return 0; -} -/*****************************************************************************/ -/*---------------------------------------------------------------------------*/ -/* - * BY DEFINITION, odd IS true FOR THE FIELD OCCUPYING LINES 1,3,5,...,479 - * odd IS false FOR THE FIELD OCCUPYING LINES 0,2,4,...,478 - * - * WHEN BOOLEAN PARAMETER decimatepixel IS true, ONLY THE FIELD FOR WHICH - * odd==false IS TRANSFERRED TO THE FRAME BUFFER. - * - */ -/*---------------------------------------------------------------------------*/ -static int field2frame(struct easycap *peasycap) -{ - - void *pex, *pad; - int kex, kad, mex, mad, rex, rad, rad2; - int c2, c3, w2, w3, cz, wz; - int rc, bytesperpixel, multiplier; - int much, more, over, rump, caches, input; - u8 mask, margin; - bool odd, isuy, decimatepixel, badinput; - - if (!peasycap) { - SAY("ERROR: peasycap is NULL\n"); - return -EFAULT; - } - - badinput = false; - input = 0x07 & peasycap->field_buffer[peasycap->field_read][0].input; - - JOM(8, "===== parity %i, input 0x%02X, field buffer %i --> " - "frame buffer %i\n", - peasycap->field_buffer[peasycap->field_read][0].kount, - peasycap->field_buffer[peasycap->field_read][0].input, - peasycap->field_read, peasycap->frame_fill); - JOM(8, "===== %i=bytesperpixel\n", peasycap->bytesperpixel); - -/*---------------------------------------------------------------------------*/ -/* - * REJECT OR CLEAN BAD FIELDS - */ -/*---------------------------------------------------------------------------*/ - if (peasycap->field_read == peasycap->field_fill) { - SAM("ERROR: on entry, still filling field buffer %i\n", - peasycap->field_read); - return 0; - } -#ifdef EASYCAP_TESTCARD - easycap_testcard(peasycap, peasycap->field_read); -#else - if (0 <= input && INPUT_MANY > input) { - if (easycap_bars && VIDEO_LOST_TOLERATE <= peasycap->lost[input]) - easycap_testcard(peasycap, peasycap->field_read); - } -#endif /*EASYCAP_TESTCARD*/ -/*---------------------------------------------------------------------------*/ - - bytesperpixel = peasycap->bytesperpixel; - decimatepixel = peasycap->decimatepixel; - - if ((2 != bytesperpixel) && - (3 != bytesperpixel) && - (4 != bytesperpixel)) { - SAM("MISTAKE: %i=bytesperpixel\n", bytesperpixel); - return -EFAULT; - } - if (decimatepixel) - multiplier = 2; - else - multiplier = 1; - - w2 = 2 * multiplier * (peasycap->width); - w3 = bytesperpixel * multiplier * (peasycap->width); - wz = multiplier * (peasycap->height) * - multiplier * (peasycap->width); - - kex = peasycap->field_read; mex = 0; - kad = peasycap->frame_fill; mad = 0; - - pex = peasycap->field_buffer[kex][0].pgo; rex = PAGE_SIZE; - pad = peasycap->frame_buffer[kad][0].pgo; rad = PAGE_SIZE; - odd = !!(peasycap->field_buffer[kex][0].kount); - - if (odd && (!decimatepixel)) { - JOM(8, "initial skipping %4i bytes p.%4i\n", - w3/multiplier, mad); - pad += (w3 / multiplier); rad -= (w3 / multiplier); - } - isuy = true; - mask = 0; rump = 0; caches = 0; - - cz = 0; - while (cz < wz) { - /* - * PROCESS ONE LINE OF FRAME AT FULL RESOLUTION: - * READ w2 BYTES FROM FIELD BUFFER, - * WRITE w3 BYTES TO FRAME BUFFER - */ - if (!decimatepixel) { - over = w2; - do { - much = over; more = 0; - margin = 0; mask = 0x00; - if (rex < much) - much = rex; - rump = 0; - - if (much % 2) {< |