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V4L/DVB (11096): V4L2 Driver for the Hauppauge HD PVR usb capture device
[deliverable/linux.git] / drivers / media / video / hdpvr / hdpvr-video.c
CommitLineData
9aba42ef
JG		 1/*
2 * Hauppage HD PVR USB driver - video 4 linux 2 interface
3 *
4 * Copyright (C) 2008 Janne Grunau (j@jannau.net)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2.
9 *
10 */
11
12#include <linux/kernel.h>
13#include <linux/errno.h>
14#include <linux/init.h>
15#include <linux/slab.h>
16#include <linux/module.h>
17#include <linux/uaccess.h>
18#include <linux/usb.h>
19#include <linux/mutex.h>
20#include <linux/version.h>
21#include <linux/workqueue.h>
22
23#include <linux/videodev2.h>
24#include <media/v4l2-dev.h>
25#include <media/v4l2-common.h>
26#include <media/v4l2-ioctl.h>
27#include "hdpvr.h"
28
29#define BULK_URB_TIMEOUT 1250 /* 1.25 seconds */
30
31struct hdpvr_fh {
32 struct hdpvr_device *dev;
33};
34
35static uint list_size(struct list_head *list)
36{
37 struct list_head *tmp;
38 uint count = 0;
39
40 list_for_each(tmp, list) {
41 count++;
42 }
43
44 return count;
45}
46
47/*=========================================================================*/
48/* urb callback */
49static void hdpvr_read_bulk_callback(struct urb *urb)
50{
51 struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
52 struct hdpvr_device *dev = buf->dev;
53
54 /* marking buffer as received and wake waiting */
55 buf->status = BUFSTAT_READY;
56 wake_up_interruptible(&dev->wait_data);
57}
58
59/*=========================================================================*/
60/* bufffer bits */
61
62/* function expects dev->io_mutex to be hold by caller */
63int hdpvr_cancel_queue(struct hdpvr_device *dev)
64{
65 struct hdpvr_buffer *buf;
66
67 list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
68 usb_kill_urb(buf->urb);
69 buf->status = BUFSTAT_AVAILABLE;
70 }
71
72 list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
73
74 return 0;
75}
76
77static int hdpvr_free_queue(struct list_head *q)
78{
79 struct list_head *tmp;
80 struct list_head *p;
81 struct hdpvr_buffer *buf;
82 struct urb *urb;
83
84 for (p = q->next; p != q;) {
85 buf = list_entry(p, struct hdpvr_buffer, buff_list);
86
87 urb = buf->urb;
88 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
89 urb->transfer_buffer, urb->transfer_dma);
90 usb_free_urb(urb);
91 tmp = p->next;
92 list_del(p);
93 kfree(buf);
94 p = tmp;
95 }
96
97 return 0;
98}
99
100/* function expects dev->io_mutex to be hold by caller */
101int hdpvr_free_buffers(struct hdpvr_device *dev)
102{
103 hdpvr_cancel_queue(dev);
104
105 hdpvr_free_queue(&dev->free_buff_list);
106 hdpvr_free_queue(&dev->rec_buff_list);
107
108 return 0;
109}
110
111/* function expects dev->io_mutex to be hold by caller */
112int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
113{
114 uint i;
115 int retval = -ENOMEM;
116 u8 *mem;
117 struct hdpvr_buffer *buf;
118 struct urb *urb;
119
120 v4l2_dbg(MSG_INFO, hdpvr_debug, dev->video_dev,
121 "allocating %u buffers\n", count);
122
123 for (i = 0; i < count; i++) {
124
125 buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
126 if (!buf) {
127 err("cannot allocate buffer");
128 goto exit;
129 }
130 buf->dev = dev;
131
132 urb = usb_alloc_urb(0, GFP_KERNEL);
133 if (!urb) {
134 err("cannot allocate urb");
135 goto exit;
136 }
137 buf->urb = urb;
138
139 mem = usb_buffer_alloc(dev->udev, dev->bulk_in_size, GFP_KERNEL,
140 &urb->transfer_dma);
141 if (!mem) {
142 err("cannot allocate usb transfer buffer");
143 goto exit;
144 }
145
146 usb_fill_bulk_urb(buf->urb, dev->udev,
147 usb_rcvbulkpipe(dev->udev,
148 dev->bulk_in_endpointAddr),
149 mem, dev->bulk_in_size,
150 hdpvr_read_bulk_callback, buf);
151
152 buf->status = BUFSTAT_AVAILABLE;
153 list_add_tail(&buf->buff_list, &dev->free_buff_list);
154 }
155 return 0;
156exit:
157 hdpvr_free_buffers(dev);
158 return retval;
159}
160
161static int hdpvr_submit_buffers(struct hdpvr_device *dev)
162{
163 struct hdpvr_buffer *buf;
164 struct urb *urb;
165 int ret = 0, err_count = 0;
166
167 mutex_lock(&dev->io_mutex);
168
169 while (dev->status == STATUS_STREAMING &&
170 !list_empty(&dev->free_buff_list)) {
171
172 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
173 buff_list);
174 if (buf->status != BUFSTAT_AVAILABLE) {
175 err("buffer not marked as availbale");
176 ret = -EFAULT;
177 goto err;
178 }
179
180 urb = buf->urb;
181 urb->status = 0;
182 urb->actual_length = 0;
183 ret = usb_submit_urb(urb, GFP_KERNEL);
184 if (ret) {
185 err("usb_submit_urb in %s returned %d", __func__, ret);
186 if (++err_count > 2)
187 break;
188 continue;
189 }
190 buf->status = BUFSTAT_INPROGRESS;
191 list_move_tail(&buf->buff_list, &dev->rec_buff_list);
192 }
193err:
194 v4l2_dbg(MSG_BUFFER, hdpvr_debug, dev->video_dev,
195 "buffer queue stat: %d free, %d proc\n",
196 list_size(&dev->free_buff_list),
197 list_size(&dev->rec_buff_list));
198 mutex_unlock(&dev->io_mutex);
199 return ret;
200}
201
202static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
203{
204 struct hdpvr_buffer *buf;
205
206 mutex_lock(&dev->io_mutex);
207
208 if (list_empty(&dev->rec_buff_list)) {
209 mutex_unlock(&dev->io_mutex);
210 return NULL;
211 }
212
213 buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
214 buff_list);
215 mutex_unlock(&dev->io_mutex);
216
217 return buf;
218}
219
220static void hdpvr_transmit_buffers(struct work_struct *work)
221{
222 struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
223 worker);
224
225 while (dev->status == STATUS_STREAMING) {
226
227 if (hdpvr_submit_buffers(dev)) {
228 v4l2_err(dev->video_dev, "couldn't submit buffers\n");
229 goto error;
230 }
231 if (wait_event_interruptible(dev->wait_buffer,
232 !list_empty(&dev->free_buff_list) ||
233 dev->status != STATUS_STREAMING))
234 goto error;
235 }
236
237 v4l2_dbg(MSG_INFO, hdpvr_debug, dev->video_dev,
238 "transmit worker exited\n");
239 return;
240error:
241 v4l2_dbg(MSG_INFO, hdpvr_debug, dev->video_dev,
242 "transmit buffers errored\n");
243 dev->status = STATUS_ERROR;
244}
245
246/* function expects dev->io_mutex to be hold by caller */
247static int hdpvr_start_streaming(struct hdpvr_device *dev)
248{
249 int ret;
250 struct hdpvr_video_info *vidinf;
251
252 if (dev->status == STATUS_STREAMING)
253 return 0;
254 else if (dev->status != STATUS_IDLE)
255 return -EAGAIN;
256
257 vidinf = get_video_info(dev);
258
259 if (vidinf) {
260 v4l2_dbg(MSG_BUFFER, hdpvr_debug, dev->video_dev,
261 "video signal: %dx%d@%dhz\n", vidinf->width,
262 vidinf->height, vidinf->fps);
263 kfree(vidinf);
264
265 /* start streaming 2 request */
266 ret = usb_control_msg(dev->udev,
267 usb_sndctrlpipe(dev->udev, 0),
268 0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
269 v4l2_dbg(MSG_BUFFER, hdpvr_debug, dev->video_dev,
270 "encoder start control request returned %d\n", ret);
271
272 hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
273
274 INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
275 queue_work(dev->workqueue, &dev->worker);
276
277 v4l2_dbg(MSG_BUFFER, hdpvr_debug, dev->video_dev,
278 "streaming started\n");
279 dev->status = STATUS_STREAMING;
280
281 return 0;
282 }
283 msleep(250);
284 v4l2_dbg(MSG_INFO, hdpvr_debug, dev->video_dev,
285 "no video signal at input %d\n", dev->options.video_input);
286 return -EAGAIN;
287}
288
289
290/* function expects dev->io_mutex to be hold by caller */
291static int hdpvr_stop_streaming(struct hdpvr_device *dev)
292{
293 if (dev->status == STATUS_IDLE)
294 return 0;
295 else if (dev->status != STATUS_STREAMING)
296 return -EAGAIN;
297
298 dev->status = STATUS_SHUTTING_DOWN;
299 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
300
301 wake_up_interruptible(&dev->wait_buffer);
302 msleep(50);
303
304 flush_workqueue(dev->workqueue);
305
306 /* kill the still outstanding urbs */
307 hdpvr_cancel_queue(dev);
308
309 dev->status = STATUS_IDLE;
310
311 return 0;
312}
313
314
315/*=======================================================================*/
316/*
317 * video 4 linux 2 file operations
318 */
319
320static int hdpvr_open(struct file *file)
321{
322 struct hdpvr_device *dev;
323 struct hdpvr_fh *fh;
324 int retval = -ENOMEM;
325
326 dev = (struct hdpvr_device *)video_get_drvdata(video_devdata(file));
327 if (!dev) {
328 err("open failing with with ENODEV");
329 retval = -ENODEV;
330 goto err;
331 }
332
333 fh = kzalloc(sizeof(struct hdpvr_fh), GFP_KERNEL);
334 if (!fh) {
335 err("Out of memory?");
336 goto err;
337 }
338 /* lock the device to allow correctly handling errors
339 * in resumption */
340 mutex_lock(&dev->io_mutex);
341 dev->open_count++;
342
343 fh->dev = dev;
344
345 /* save our object in the file's private structure */
346 file->private_data = fh;
347
348 retval = 0;
349err:
350 mutex_unlock(&dev->io_mutex);
351 return retval;
352}
353
354static int hdpvr_release(struct file *file)
355{
356 struct hdpvr_fh *fh = (struct hdpvr_fh *)file->private_data;
357 struct hdpvr_device *dev = fh->dev;
358
359 if (!dev)
360 return -ENODEV;
361
362 mutex_lock(&dev->io_mutex);
363 if (!(--dev->open_count) && dev->status == STATUS_STREAMING)
364 hdpvr_stop_streaming(dev);
365
366 mutex_unlock(&dev->io_mutex);
367
368 return 0;
369}
370
371/*
372 * hdpvr_v4l2_read()
373 * will allocate buffers when called for the first time
374 */
375static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
376 loff_t *pos)
377{
378 struct hdpvr_fh *fh = file->private_data;
379 struct hdpvr_device *dev = fh->dev;
380 struct hdpvr_buffer *buf = NULL;
381 struct urb *urb;
382 unsigned int ret = 0;
383 int rem, cnt;
384
385 if (*pos)
386 return -ESPIPE;
387
388 if (!dev)
389 return -ENODEV;
390
391 mutex_lock(&dev->io_mutex);
392 if (dev->status == STATUS_IDLE) {
393 if (hdpvr_start_streaming(dev)) {
394 v4l2_dbg(MSG_INFO, hdpvr_debug, dev->video_dev,
395 "start_streaming failed");
396 ret = -EIO;
397 msleep(200);
398 dev->status = STATUS_IDLE;
399 mutex_unlock(&dev->io_mutex);
400 goto err;
401 }
402
403 v4l2_dbg(MSG_BUFFER, hdpvr_debug, dev->video_dev,
404 "buffer queue stat: %d free, %d proc\n",
405 list_size(&dev->free_buff_list),
406 list_size(&dev->rec_buff_list));
407 }
408 mutex_unlock(&dev->io_mutex);
409
410 /* wait for the first buffer */
411 if (!(file->f_flags & O_NONBLOCK)) {
412 if (wait_event_interruptible(dev->wait_data,
413 hdpvr_get_next_buffer(dev)))
414 return -ERESTARTSYS;
415 }
416
417 buf = hdpvr_get_next_buffer(dev);
418
419 while (count > 0 && buf) {
420
421 if (buf->status != BUFSTAT_READY &&
422 dev->status != STATUS_DISCONNECTED) {
423 /* return nonblocking */
424 if (file->f_flags & O_NONBLOCK) {
425 if (!ret)
426 ret = -EAGAIN;
427 goto err;
428 }
429
430 if (wait_event_interruptible(dev->wait_data,
431 buf->status == BUFSTAT_READY)) {
432 ret = -ERESTARTSYS;
433 goto err;
434 }
435 }
436
437 if (buf->status != BUFSTAT_READY)
438 break;
439
440 /* set remaining bytes to copy */
441 urb = buf->urb;
442 rem = urb->actual_length - buf->pos;
443 cnt = rem > count ? count : rem;
444
445 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
446 cnt)) {
447 err("read: copy_to_user failed");
448 if (!ret)
449 ret = -EFAULT;
450 goto err;
451 }
452
453 buf->pos += cnt;
454 count -= cnt;
455 buffer += cnt;
456 ret += cnt;
457
458 /* finished, take next buffer */
459 if (buf->pos == urb->actual_length) {
460 mutex_lock(&dev->io_mutex);
461 buf->pos = 0;
462 buf->status = BUFSTAT_AVAILABLE;
463
464 list_move_tail(&buf->buff_list, &dev->free_buff_list);
465
466 v4l2_dbg(MSG_BUFFER, hdpvr_debug, dev->video_dev,
467 "buffer queue stat: %d free, %d proc\n",
468 list_size(&dev->free_buff_list),
469 list_size(&dev->rec_buff_list));
470
471 mutex_unlock(&dev->io_mutex);
472
473 wake_up_interruptible(&dev->wait_buffer);
474
475 buf = hdpvr_get_next_buffer(dev);
476 }
477 }
478err:
479 if (!ret && !buf)
480 ret = -EAGAIN;
481 return ret;
482}
483
484static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
485{
486 struct hdpvr_fh *fh = (struct hdpvr_fh *)filp->private_data;
487 struct hdpvr_device *dev = fh->dev;
488 unsigned int mask = 0;
489
490 mutex_lock(&dev->io_mutex);
491
492 if (video_is_unregistered(dev->video_dev))
493 return -EIO;
494
495 if (dev->status == STATUS_IDLE) {
496 if (hdpvr_start_streaming(dev)) {
497 v4l2_dbg(MSG_BUFFER, hdpvr_debug, dev->video_dev,
498 "start_streaming failed");
499 dev->status = STATUS_IDLE;
500 }
501
502 v4l2_dbg(MSG_BUFFER, hdpvr_debug, dev->video_dev,
503 "buffer queue stat: %d free, %d proc\n",
504 list_size(&dev->free_buff_list),
505 list_size(&dev->rec_buff_list));
506 }
507 mutex_unlock(&dev->io_mutex);
508
509 poll_wait(filp, &dev->wait_data, wait);
510
511 mutex_lock(&dev->io_mutex);
512 if (!list_empty(&dev->rec_buff_list)) {
513
514 struct hdpvr_buffer *buf = list_entry(dev->rec_buff_list.next,
515 struct hdpvr_buffer,
516 buff_list);
517
518 if (buf->status == BUFSTAT_READY)
519 mask |= POLLIN | POLLRDNORM;
520 }
521 mutex_unlock(&dev->io_mutex);
522
523 return mask;
524}
525
526
527static long hdpvr_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
528{
529 struct hdpvr_fh *fh = (struct hdpvr_fh *)filp->private_data;
530 struct hdpvr_device *dev = fh->dev;
531 int res;
532
533 if (video_is_unregistered(dev->video_dev))
534 return -EIO;
535
536 mutex_lock(&dev->io_mutex);
537 switch (cmd) {
538 case VIDIOC_TRY_ENCODER_CMD:
539 case VIDIOC_ENCODER_CMD: {
540 struct v4l2_encoder_cmd *enc = (struct v4l2_encoder_cmd *)arg;
541 int try = cmd == VIDIOC_TRY_ENCODER_CMD;
542
543 memset(&enc->raw, 0, sizeof(enc->raw));
544 switch (enc->cmd) {
545 case V4L2_ENC_CMD_START:
546 enc->flags = 0;
547 if (try)
548 return 0;
549 res = hdpvr_start_streaming(dev);
550 break;
551 case V4L2_ENC_CMD_STOP:
552 if (try)
553 return 0;
554 res = hdpvr_stop_streaming(dev);
555 break;
556 default:
557 v4l2_dbg(MSG_INFO, hdpvr_debug, dev->video_dev,
558 "Unsupported encoder cmd %d\n", enc->cmd);
559 return -EINVAL;
560 }
561 break;
562 }
563 default:
564 res = video_ioctl2(filp, cmd, arg);
565 }
566 mutex_unlock(&dev->io_mutex);
567 return res;
568}
569
570static const struct v4l2_file_operations hdpvr_fops = {
571 .owner = THIS_MODULE,
572 .open = hdpvr_open,
573 .release = hdpvr_release,
574 .read = hdpvr_read,
575 .poll = hdpvr_poll,
576 .unlocked_ioctl = hdpvr_ioctl,
577};
578
579/*=======================================================================*/
580/*
581 * V4L2 ioctl handling
582 */
583
584static int vidioc_querycap(struct file *file, void *priv,
585 struct v4l2_capability *cap)
586{
587 struct hdpvr_device *dev = video_drvdata(file);
588
589 strcpy(cap->driver, "hdpvr");
590 strcpy(cap->card, "Haupauge HD PVR");
591 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
592 cap->version = HDPVR_VERSION;
593 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
594 V4L2_CAP_AUDIO |
595 V4L2_CAP_READWRITE;
596 return 0;
597}
598
599static int vidioc_s_std(struct file *file, void *private_data,
600 v4l2_std_id *std)
601{
602 struct hdpvr_fh *fh = file->private_data;
603 struct hdpvr_device *dev = fh->dev;
604 u8 std_type = 1;
605
606 if (*std & (V4L2_STD_NTSC | V4L2_STD_PAL_60))
607 std_type = 0;
608
609 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
610}
611
612static const char *iname[] = {
613 [HDPVR_COMPONENT] = "Component",
614 [HDPVR_SVIDEO] = "S-Video",
615 [HDPVR_COMPOSITE] = "Composite",
616};
617
618static int vidioc_enum_input(struct file *file, void *priv,
619 struct v4l2_input *i)
620{
621 struct hdpvr_fh *fh = file->private_data;
622 struct hdpvr_device *dev = fh->dev;
623 unsigned int n;
624
625 n = i->index;
626 if (n >= HDPVR_VIDEO_INPUTS)
627 return -EINVAL;
628
629 i->type = V4L2_INPUT_TYPE_CAMERA;
630
631 strncpy(i->name, iname[n], sizeof(i->name) - 1);
632 i->name[sizeof(i->name) - 1] = '\0';
633
634 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
635
636 i->std = dev->video_dev->tvnorms;
637
638 return 0;
639}
640
641static int vidioc_s_input(struct file *file, void *private_data,
642 unsigned int index)
643{
644 struct hdpvr_fh *fh = file->private_data;
645 struct hdpvr_device *dev = fh->dev;
646 int retval;
647
648 if (index >= HDPVR_VIDEO_INPUTS)
649 return -EINVAL;
650
651 if (dev->status != STATUS_IDLE)
652 return -EAGAIN;
653
654 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
655 if (!retval)
656 dev->options.video_input = index;
657
658 return retval;
659}
660
661static int vidioc_g_input(struct file *file, void *private_data,
662 unsigned int *index)
663{
664 struct hdpvr_fh *fh = file->private_data;
665 struct hdpvr_device *dev = fh->dev;
666
667 *index = dev->options.video_input;
668 return 0;
669}
670
671
672static const char *audio_iname[] = {
673 [HDPVR_RCA_FRONT] = "RCA front",
674 [HDPVR_RCA_BACK] = "RCA back",
675 [HDPVR_SPDIF] = "SPDIF",
676};
677
678static int vidioc_enumaudio(struct file *file, void *priv,
679 struct v4l2_audio *audio)
680{
681 unsigned int n;
682
683 n = audio->index;
684 if (n >= HDPVR_AUDIO_INPUTS)
685 return -EINVAL;
686
687 audio->capability = V4L2_AUDCAP_STEREO;
688
689 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
690 audio->name[sizeof(audio->name) - 1] = '\0';
691
692 return 0;
693}
694
695static int vidioc_s_audio(struct file *file, void *private_data,
696 struct v4l2_audio *audio)
697{
698 struct hdpvr_fh *fh = file->private_data;
699 struct hdpvr_device *dev = fh->dev;
700 int retval;
701
702 if (audio->index >= HDPVR_AUDIO_INPUTS)
703 return -EINVAL;
704
705 if (dev->status != STATUS_IDLE)
706 return -EAGAIN;
707
708 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
709 if (!retval)
710 dev->options.audio_input = audio->index;
711
712 return retval;
713}
714
715static int vidioc_g_audio(struct file *file, void *private_data,
716 struct v4l2_audio *audio)
717{
718 struct hdpvr_fh *fh = file->private_data;
719 struct hdpvr_device *dev = fh->dev;
720
721 audio->index = dev->options.audio_input;
722 audio->capability = V4L2_AUDCAP_STEREO;
723 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
724 audio->name[sizeof(audio->name) - 1] = '\0';
725 return 0;
726}
727
728static const s32 supported_v4l2_ctrls[] = {
729 V4L2_CID_BRIGHTNESS,
730 V4L2_CID_CONTRAST,
731 V4L2_CID_SATURATION,
732 V4L2_CID_HUE,
733 V4L2_CID_SHARPNESS,
734 V4L2_CID_MPEG_AUDIO_ENCODING,
735 V4L2_CID_MPEG_VIDEO_ENCODING,
736 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
737 V4L2_CID_MPEG_VIDEO_BITRATE,
738 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
739};
740
741static int fill_queryctrl(struct hdpvr_options *opt, struct v4l2_queryctrl *qc,
742 int ac3)
743{
744 int err;
745
746 switch (qc->id) {
747 case V4L2_CID_BRIGHTNESS:
748 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x86);
749 case V4L2_CID_CONTRAST:
750 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
751 case V4L2_CID_SATURATION:
752 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
753 case V4L2_CID_HUE:
754 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
755 case V4L2_CID_SHARPNESS:
756 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
757 case V4L2_CID_MPEG_AUDIO_ENCODING:
758 return v4l2_ctrl_query_fill(
759 qc, V4L2_MPEG_AUDIO_ENCODING_AAC,
760 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3
761 : V4L2_MPEG_AUDIO_ENCODING_AAC,
762 1, V4L2_MPEG_AUDIO_ENCODING_AAC);
763 case V4L2_CID_MPEG_VIDEO_ENCODING:
764 return v4l2_ctrl_query_fill(
765 qc, V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC,
766 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 1,
767 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
768
769/* case V4L2_CID_MPEG_VIDEO_? maybe keyframe interval: */
770/* return v4l2_ctrl_query_fill(qc, 0, 128, 128, 0); */
771 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
772 return v4l2_ctrl_query_fill(
773 qc, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
774 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
775 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
776
777 case V4L2_CID_MPEG_VIDEO_BITRATE:
778 return v4l2_ctrl_query_fill(qc, 1000000, 13500000, 100000,
779 6500000);
780 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
781 err = v4l2_ctrl_query_fill(qc, 1100000, 20200000, 100000,
782 9000000);
783 if (!err && opt->bitrate_mode == HDPVR_CONSTANT)
784 qc->flags |= V4L2_CTRL_FLAG_INACTIVE;
785 return err;
786 default:
787 return -EINVAL;
788 }
789}
790
791static int vidioc_queryctrl(struct file *file, void *private_data,
792 struct v4l2_queryctrl *qc)
793{
794 struct hdpvr_fh *fh = file->private_data;
795 struct hdpvr_device *dev = fh->dev;
796 int i, next;
797 u32 id = qc->id;
798
799 memset(qc, 0, sizeof(*qc));
800
801 next = !!(id & V4L2_CTRL_FLAG_NEXT_CTRL);
802 qc->id = id & ~V4L2_CTRL_FLAG_NEXT_CTRL;
803
804 for (i = 0; i < ARRAY_SIZE(supported_v4l2_ctrls); i++) {
805 if (next) {
806 if (qc->id < supported_v4l2_ctrls[i])
807 qc->id = supported_v4l2_ctrls[i];
808 else
809 continue;
810 }
811
812 if (qc->id == supported_v4l2_ctrls[i])
813 return fill_queryctrl(&dev->options, qc,
814 dev->flags & HDPVR_FLAG_AC3_CAP);
815
816 if (qc->id < supported_v4l2_ctrls[i])
817 break;
818 }
819
820 return -EINVAL;
821}
822
823static int vidioc_g_ctrl(struct file *file, void *private_data,
824 struct v4l2_control *ctrl)
825{
826 struct hdpvr_fh *fh = file->private_data;
827 struct hdpvr_device *dev = fh->dev;
828
829 switch (ctrl->id) {
830 case V4L2_CID_BRIGHTNESS:
831 ctrl->value = dev->options.brightness;
832 break;
833 case V4L2_CID_CONTRAST:
834 ctrl->value = dev->options.contrast;
835 break;
836 case V4L2_CID_SATURATION:
837 ctrl->value = dev->options.saturation;
838 break;
839 case V4L2_CID_HUE:
840 ctrl->value = dev->options.hue;
841 break;
842 case V4L2_CID_SHARPNESS:
843 ctrl->value = dev->options.sharpness;
844 break;
845 default:
846 return -EINVAL;
847 }
848 return 0;
849}
850
851static int vidioc_s_ctrl(struct file *file, void *private_data,
852 struct v4l2_control *ctrl)
853{
854 struct hdpvr_fh *fh = file->private_data;
855 struct hdpvr_device *dev = fh->dev;
856 int retval;
857
858 switch (ctrl->id) {
859 case V4L2_CID_BRIGHTNESS:
860 retval = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->value);
861 if (!retval)
862 dev->options.brightness = ctrl->value;
863 break;
864 case V4L2_CID_CONTRAST:
865 retval = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->value);
866 if (!retval)
867 dev->options.contrast = ctrl->value;
868 break;
869 case V4L2_CID_SATURATION:
870 retval = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->value);
871 if (!retval)
872 dev->options.saturation = ctrl->value;
873 break;
874 case V4L2_CID_HUE:
875 retval = hdpvr_config_call(dev, CTRL_HUE, ctrl->value);
876 if (!retval)
877 dev->options.hue = ctrl->value;
878 break;
879 case V4L2_CID_SHARPNESS:
880 retval = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->value);
881 if (!retval)
882 dev->options.sharpness = ctrl->value;
883 break;
884 default:
885 return -EINVAL;
886 }
887
888 return retval;
889}
890
891
892static int hdpvr_get_ctrl(struct hdpvr_options *opt,
893 struct v4l2_ext_control *ctrl)
894{
895 switch (ctrl->id) {
896 case V4L2_CID_MPEG_AUDIO_ENCODING:
897 ctrl->value = opt->audio_codec;
898 break;
899 case V4L2_CID_MPEG_VIDEO_ENCODING:
900 ctrl->value = V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC;
901 break;
902/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
903/* ctrl->value = (opt->gop_mode & 0x2) ? 0 : 128; */
904/* break; */
905 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
906 ctrl->value = opt->bitrate_mode == HDPVR_CONSTANT
907 ? V4L2_MPEG_VIDEO_BITRATE_MODE_CBR
908 : V4L2_MPEG_VIDEO_BITRATE_MODE_VBR;
909 break;
910 case V4L2_CID_MPEG_VIDEO_BITRATE:
911 ctrl->value = opt->bitrate * 100000;
912 break;
913 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
914 ctrl->value = opt->peak_bitrate * 100000;
915 break;
916 case V4L2_CID_MPEG_STREAM_TYPE:
917 ctrl->value = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
918 break;
919 default:
920 return -EINVAL;
921 }
922 return 0;
923}
924
925static int vidioc_g_ext_ctrls(struct file *file, void *priv,
926 struct v4l2_ext_controls *ctrls)
927{
928 struct hdpvr_fh *fh = file->private_data;
929 struct hdpvr_device *dev = fh->dev;
930 int i, err = 0;
931
932 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
933 for (i = 0; i < ctrls->count; i++) {
934 struct v4l2_ext_control *ctrl = ctrls->controls + i;
935
936 err = hdpvr_get_ctrl(&dev->options, ctrl);
937 if (err) {
938 ctrls->error_idx = i;
939 break;
940 }
941 }
942 return err;
943
944 }
945
946 return -EINVAL;
947}
948
949
950static int hdpvr_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
951{
952 int ret = -EINVAL;
953
954 switch (ctrl->id) {
955 case V4L2_CID_MPEG_AUDIO_ENCODING:
956 if (ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AAC ||
957 (ac3 && ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AC3))
958 ret = 0;
959 break;
960 case V4L2_CID_MPEG_VIDEO_ENCODING:
961 if (ctrl->value == V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC)
962 ret = 0;
963 break;
964/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
965/* if (ctrl->value == 0 || ctrl->value == 128) */
966/* ret = 0; */
967/* break; */
968 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
969 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR ||
970 ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR)
971 ret = 0;
972 break;
973 case V4L2_CID_MPEG_VIDEO_BITRATE:
974 {
975 uint bitrate = ctrl->value / 100000;
976 if (bitrate >= 10 && bitrate <= 135)
977 ret = 0;
978 break;
979 }
980 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
981 {
982 uint peak_bitrate = ctrl->value / 100000;
983 if (peak_bitrate >= 10 && peak_bitrate <= 202)
984 ret = 0;
985 break;
986 }
987 case V4L2_CID_MPEG_STREAM_TYPE:
988 if (ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_TS)
989 ret = 0;
990 break;
991 default:
992 return -EINVAL;
993 }
994 return 0;
995}
996
997static int vidioc_try_ext_ctrls(struct file *file, void *priv,
998 struct v4l2_ext_controls *ctrls)
999{
1000 struct hdpvr_fh *fh = file->private_data;
1001 struct hdpvr_device *dev = fh->dev;
1002 int i, err = 0;
1003
1004 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
1005 for (i = 0; i < ctrls->count; i++) {
1006 struct v4l2_ext_control *ctrl = ctrls->controls + i;
1007
1008 err = hdpvr_try_ctrl(ctrl,
1009 dev->flags & HDPVR_FLAG_AC3_CAP);
1010 if (err) {
1011 ctrls->error_idx = i;
1012 break;
1013 }
1014 }
1015 return err;
1016 }
1017
1018 return -EINVAL;
1019}
1020
1021
1022static int hdpvr_set_ctrl(struct hdpvr_device *dev,
1023 struct v4l2_ext_control *ctrl)
1024{
1025 struct hdpvr_options *opt = &dev->options;
1026 int ret = 0;
1027
1028 switch (ctrl->id) {
1029 case V4L2_CID_MPEG_AUDIO_ENCODING:
1030 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
1031 opt->audio_codec = ctrl->value;
1032 ret = hdpvr_set_audio(dev, opt->audio_input,
1033 opt->audio_codec);
1034 }
1035 break;
1036 case V4L2_CID_MPEG_VIDEO_ENCODING:
1037 break;
1038/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
1039/* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
1040/* opt->gop_mode |= 0x2; */
1041/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
1042/* opt->gop_mode); */
1043/* } */
1044/* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
1045/* opt->gop_mode &= ~0x2; */
1046/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
1047/* opt->gop_mode); */
1048/* } */
1049/* break; */
1050 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
1051 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR &&
1052 opt->bitrate_mode != HDPVR_CONSTANT) {
1053 opt->bitrate_mode = HDPVR_CONSTANT;
1054 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
1055 opt->bitrate_mode);
1056 }
1057 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
1058 opt->bitrate_mode == HDPVR_CONSTANT) {
1059 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
1060 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
1061 opt->bitrate_mode);
1062 }
1063 break;
1064 case V4L2_CID_MPEG_VIDEO_BITRATE: {
1065 uint bitrate = ctrl->value / 100000;
1066
1067 opt->bitrate = bitrate;
1068 if (bitrate >= opt->peak_bitrate)
1069 opt->peak_bitrate = bitrate+1;
1070
1071 hdpvr_set_bitrate(dev);
1072 break;
1073 }
1074 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: {
1075 uint peak_bitrate = ctrl->value / 100000;
1076
1077 if (opt->bitrate_mode == HDPVR_CONSTANT)
1078 break;
1079
1080 if (opt->bitrate < peak_bitrate) {
1081 opt->peak_bitrate = peak_bitrate;
1082 hdpvr_set_bitrate(dev);
1083 } else
1084 ret = -EINVAL;
1085 break;
1086 }
1087 case V4L2_CID_MPEG_STREAM_TYPE:
1088 break;
1089 default:
1090 return -EINVAL;
1091 }
1092 return ret;
1093}
1094
1095static int vidioc_s_ext_ctrls(struct file *file, void *priv,
1096 struct v4l2_ext_controls *ctrls)
1097{
1098 struct hdpvr_fh *fh = file->private_data;
1099 struct hdpvr_device *dev = fh->dev;
1100 int i, err = 0;
1101
1102 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
1103 for (i = 0; i < ctrls->count; i++) {
1104 struct v4l2_ext_control *ctrl = ctrls->controls + i;
1105
1106 err = hdpvr_try_ctrl(ctrl,
1107 dev->flags & HDPVR_FLAG_AC3_CAP);
1108 if (err) {
1109 ctrls->error_idx = i;
1110 break;
1111 }
1112 err = hdpvr_set_ctrl(dev, ctrl);
1113 if (err) {
1114 ctrls->error_idx = i;
1115 break;
1116 }
1117 }
1118 return err;
1119
1120 }
1121
1122 return -EINVAL;
1123}
1124
1125static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
1126 struct v4l2_fmtdesc *f)
1127{
1128
1129 if (f->index != 0 || f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1130 return -EINVAL;
1131
1132 f->flags = V4L2_FMT_FLAG_COMPRESSED;
1133 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
1134 f->pixelformat = V4L2_PIX_FMT_MPEG;
1135
1136 return 0;
1137}
1138
1139static int vidioc_g_fmt_vid_cap(struct file *file, void *private_data,
1140 struct v4l2_format *f)
1141{
1142 struct hdpvr_fh *fh = file->private_data;
1143 struct hdpvr_device *dev = fh->dev;
1144 struct hdpvr_video_info *vid_info;
1145
1146 if (!dev)
1147 return -ENODEV;
1148
1149 vid_info = get_video_info(dev);
1150 if (!vid_info)
1151 return -EFAULT;
1152
1153 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1154 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
1155 f->fmt.pix.width = vid_info->width;
1156 f->fmt.pix.height = vid_info->height;
1157 f->fmt.pix.sizeimage = dev->bulk_in_size;
1158 f->fmt.pix.colorspace = 0;
1159 f->fmt.pix.bytesperline = 0;
1160 f->fmt.pix.field = V4L2_FIELD_ANY;
1161
1162 kfree(vid_info);
1163 return 0;
1164}
1165
1166
1167static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1168 .vidioc_querycap = vidioc_querycap,
1169 .vidioc_s_std = vidioc_s_std,
1170 .vidioc_enum_input = vidioc_enum_input,
1171 .vidioc_g_input = vidioc_g_input,
1172 .vidioc_s_input = vidioc_s_input,
1173 .vidioc_enumaudio = vidioc_enumaudio,
1174 .vidioc_g_audio = vidioc_g_audio,
1175 .vidioc_s_audio = vidioc_s_audio,
1176 .vidioc_queryctrl = vidioc_queryctrl,
1177 .vidioc_g_ctrl = vidioc_g_ctrl,
1178 .vidioc_s_ctrl = vidioc_s_ctrl,
1179 .vidioc_g_ext_ctrls = vidioc_g_ext_ctrls,
1180 .vidioc_s_ext_ctrls = vidioc_s_ext_ctrls,
1181 .vidioc_try_ext_ctrls = vidioc_try_ext_ctrls,
1182 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1183 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1184};
1185
1186static void hdpvr_device_release(struct video_device *vdev)
1187{
1188 struct hdpvr_device *dev = video_get_drvdata(vdev);
1189
1190 hdpvr_delete(dev);
1191}
1192
1193static const struct video_device hdpvr_video_template = {
1194/* .type = VFL_TYPE_GRABBER, */
1195/* .type2 = VID_TYPE_CAPTURE | VID_TYPE_MPEG_ENCODER, */
1196 .fops = &hdpvr_fops,
1197 .release = hdpvr_device_release,
1198 .ioctl_ops = &hdpvr_ioctl_ops,
1199 .tvnorms =
1200 V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_B |
1201 V4L2_STD_PAL_G | V4L2_STD_PAL_H | V4L2_STD_PAL_I |
1202 V4L2_STD_PAL_D | V4L2_STD_PAL_M | V4L2_STD_PAL_N |
1203 V4L2_STD_PAL_60,
1204};
1205
1206int hdpvr_register_videodev(struct hdpvr_device *dev, int devnum)
1207{
1208 /* setup and register video device */
1209 dev->video_dev = video_device_alloc();
1210 if (!dev->video_dev) {
1211 err("video_device_alloc() failed");
1212 goto error;
1213 }
1214
1215 *(dev->video_dev) = hdpvr_video_template;
1216 strcpy(dev->video_dev->name, "Hauppauge HD PVR");
1217 dev->video_dev->parent = &dev->udev->dev;
1218 video_set_drvdata(dev->video_dev, dev);
1219
1220 if (video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum)) {
1221 err("V4L2 device registration failed");
1222 goto error;
1223 }
1224
1225 return 0;
1226error:
1227 return -ENOMEM;
1228}
Linux kernel - Deliverables
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