3 * Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * 2006 Edgard Lima <edgard.lima@gmail.com>
6 * v4l2_calls.c - generic V4L2 calls handling
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
28 #include <sys/types.h>
31 #include <sys/ioctl.h>
36 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
38 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
40 /* Needed on older Solaris Nevada builds (72 at least) */
42 #include <sys/ioccom.h>
44 #include "v4l2_calls.h"
45 #include "gstv4l2tuner.h"
47 #include "gstv4l2xoverlay.h"
49 #include "gstv4l2colorbalance.h"
51 #include "gstv4l2src.h"
52 #include "gstv4l2sink.h"
53 #include "gstv4l2videodec.h"
55 #include "gst/gst-i18n-plugin.h"
57 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
60 V4L2_OPEN_ERROR_STAT_FAILED,
61 V4L2_OPEN_ERROR_NO_DEVICE,
62 V4L2_OPEN_ERROR_NOT_OPEN,
63 V4L2_OPEN_ERROR_NOT_CAPTURE,
64 V4L2_OPEN_ERROR_NOT_OUTPUT
66 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
68 GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
69 #define GST_CAT_DEFAULT v4l2_debug
71 /******************************************************
72 * gst_v4l2_get_capabilities():
73 * get the device's capturing capabilities
74 * return value: TRUE on success, FALSE on error
75 ******************************************************/
77 gst_v4l2_get_capabilities (GstV4l2Object * v4l2object)
81 e = v4l2object->element;
83 GST_DEBUG_OBJECT (e, "getting capabilities");
85 if (!GST_V4L2_IS_OPEN (v4l2object))
88 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_QUERYCAP, &v4l2object->vcap) < 0)
91 if (v4l2object->vcap.capabilities & V4L2_CAP_DEVICE_CAPS)
92 v4l2object->device_caps = v4l2object->vcap.device_caps;
94 v4l2object->device_caps = v4l2object->vcap.capabilities;
96 GST_LOG_OBJECT (e, "driver: '%s'", v4l2object->vcap.driver);
97 GST_LOG_OBJECT (e, "card: '%s'", v4l2object->vcap.card);
98 GST_LOG_OBJECT (e, "bus_info: '%s'", v4l2object->vcap.bus_info);
99 GST_LOG_OBJECT (e, "version: %08x", v4l2object->vcap.version);
100 GST_LOG_OBJECT (e, "capabilites: %08x", v4l2object->device_caps);
107 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
108 (_("Error getting capabilities for device '%s': "
109 "It isn't a v4l2 driver. Check if it is a v4l1 driver."),
110 v4l2object->videodev), GST_ERROR_SYSTEM);
115 /******************************************************
116 * The video4linux command line tool v4l2-ctrl
117 * normalises the names of the controls received from
120 * "Exposure (absolute)" -> "exposure_absolute"
122 * We follow their lead here. @name is modified
124 ******************************************************/
126 gst_v4l2_normalise_control_name (gchar * name)
129 for (i = 0, j = 0; name[j]; ++j) {
130 if (g_ascii_isalnum (name[j])) {
131 if (i > 0 && !g_ascii_isalnum (name[j - 1]))
133 name[i++] = g_ascii_tolower (name[j]);
139 /******************************************************
140 * gst_v4l2_empty_lists() and gst_v4l2_fill_lists():
141 * fill/empty the lists of enumerations
142 * return value: TRUE on success, FALSE on error
143 ******************************************************/
145 gst_v4l2_fill_lists (GstV4l2Object * v4l2object)
148 struct v4l2_queryctrl control = { 0, };
152 e = v4l2object->element;
154 GST_DEBUG_OBJECT (e, "getting enumerations");
155 GST_V4L2_CHECK_OPEN (v4l2object);
157 GST_DEBUG_OBJECT (e, " channels");
158 /* and now, the channels */
160 struct v4l2_input input;
161 GstV4l2TunerChannel *v4l2channel;
162 GstTunerChannel *channel;
164 memset (&input, 0, sizeof (input));
167 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_ENUMINPUT, &input) < 0) {
168 if (errno == EINVAL || errno == ENOTTY)
169 break; /* end of enumeration */
171 GST_ELEMENT_ERROR (e, RESOURCE, SETTINGS,
172 (_("Failed to query attributes of input %d in device %s"),
173 n, v4l2object->videodev),
174 ("Failed to get %d in input enumeration for %s. (%d - %s)",
175 n, v4l2object->videodev, errno, strerror (errno)));
180 GST_LOG_OBJECT (e, " index: %d", input.index);
181 GST_LOG_OBJECT (e, " name: '%s'", input.name);
182 GST_LOG_OBJECT (e, " type: %08x", input.type);
183 GST_LOG_OBJECT (e, " audioset: %08x", input.audioset);
184 GST_LOG_OBJECT (e, " std: %016" G_GINT64_MODIFIER "x",
185 (guint64) input.std);
186 GST_LOG_OBJECT (e, " status: %08x", input.status);
188 v4l2channel = g_object_new (GST_TYPE_V4L2_TUNER_CHANNEL, NULL);
189 channel = GST_TUNER_CHANNEL (v4l2channel);
190 channel->label = g_strdup ((const gchar *) input.name);
191 channel->flags = GST_TUNER_CHANNEL_INPUT;
192 v4l2channel->index = n;
194 if (input.type == V4L2_INPUT_TYPE_TUNER) {
195 struct v4l2_tuner vtun;
197 v4l2channel->tuner = input.tuner;
198 channel->flags |= GST_TUNER_CHANNEL_FREQUENCY;
200 vtun.index = input.tuner;
201 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_TUNER, &vtun) < 0) {
202 GST_ELEMENT_ERROR (e, RESOURCE, SETTINGS,
203 (_("Failed to get setting of tuner %d on device '%s'."),
204 input.tuner, v4l2object->videodev), GST_ERROR_SYSTEM);
205 g_object_unref (G_OBJECT (channel));
209 channel->freq_multiplicator =
210 62.5 * ((vtun.capability & V4L2_TUNER_CAP_LOW) ? 1 : 1000);
211 channel->min_frequency = vtun.rangelow * channel->freq_multiplicator;
212 channel->max_frequency = vtun.rangehigh * channel->freq_multiplicator;
213 channel->min_signal = 0;
214 channel->max_signal = 0xffff;
216 if (input.audioset) {
217 /* we take the first. We don't care for
218 * the others for now */
219 while (!(input.audioset & (1 << v4l2channel->audio)))
220 v4l2channel->audio++;
221 channel->flags |= GST_TUNER_CHANNEL_AUDIO;
224 v4l2object->channels =
225 g_list_prepend (v4l2object->channels, (gpointer) channel);
227 v4l2object->channels = g_list_reverse (v4l2object->channels);
229 GST_DEBUG_OBJECT (e, " norms");
232 struct v4l2_standard standard = { 0, };
233 GstV4l2TunerNorm *v4l2norm;
237 /* fill in defaults */
238 standard.frameperiod.numerator = 1;
239 standard.frameperiod.denominator = 0;
242 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_ENUMSTD, &standard) < 0) {
243 if (errno == EINVAL || errno == ENOTTY)
244 break; /* end of enumeration */
246 else if (errno == ENODATA)
247 break; /* end of enumeration, as of Linux 3.7-rc1 */
250 GST_ELEMENT_ERROR (e, RESOURCE, SETTINGS,
251 (_("Failed to query norm on device '%s'."),
252 v4l2object->videodev),
253 ("Failed to get attributes for norm %d on devide '%s'. (%d - %s)",
254 n, v4l2object->videodev, errno, strerror (errno)));
259 GST_DEBUG_OBJECT (e, " '%s', fps: %d / %d",
260 standard.name, standard.frameperiod.denominator,
261 standard.frameperiod.numerator);
263 v4l2norm = g_object_new (GST_TYPE_V4L2_TUNER_NORM, NULL);
264 norm = GST_TUNER_NORM (v4l2norm);
265 norm->label = g_strdup ((const gchar *) standard.name);
266 gst_value_set_fraction (&norm->framerate,
267 standard.frameperiod.denominator, standard.frameperiod.numerator);
268 v4l2norm->index = standard.id;
270 GST_DEBUG_OBJECT (v4l2object->element, "index=%08x, label=%s",
271 (unsigned int) v4l2norm->index, norm->label);
273 v4l2object->norms = g_list_prepend (v4l2object->norms, (gpointer) norm);
275 v4l2object->norms = g_list_reverse (v4l2object->norms);
277 GST_DEBUG_OBJECT (e, " controls+menus");
279 /* and lastly, controls+menus (if appropriate) */
280 next = V4L2_CTRL_FLAG_NEXT_CTRL;
285 GstV4l2ColorBalanceChannel *v4l2channel;
286 GstColorBalanceChannel *channel;
292 /* when we reached the last official CID, continue with private CIDs */
293 if (n == V4L2_CID_LASTP1) {
294 GST_DEBUG_OBJECT (e, "checking private CIDs");
295 n = V4L2_CID_PRIVATE_BASE;
297 GST_DEBUG_OBJECT (e, "checking control %08x", n);
299 control.id = n | next;
300 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_QUERYCTRL, &control) < 0) {
303 GST_DEBUG_OBJECT (e, "controls finished");
306 GST_DEBUG_OBJECT (e, "V4L2_CTRL_FLAG_NEXT_CTRL not supported.");
312 if (errno == EINVAL || errno == ENOTTY || errno == EIO || errno == ENOENT) {
313 if (n < V4L2_CID_PRIVATE_BASE) {
314 GST_DEBUG_OBJECT (e, "skipping control %08x", n);
315 /* continue so that we also check private controls */
316 n = V4L2_CID_PRIVATE_BASE - 1;
319 GST_DEBUG_OBJECT (e, "controls finished");
323 GST_WARNING_OBJECT (e, "Failed querying control %d on device '%s'. "
324 "(%d - %s)", n, v4l2object->videodev, errno, strerror (errno));
328 /* bogus driver might mess with id in unexpected ways (e.g. set to 0), so
329 * make sure to simply try all if V4L2_CTRL_FLAG_NEXT_CTRL not supported */
332 if (control.flags & V4L2_CTRL_FLAG_DISABLED) {
333 GST_DEBUG_OBJECT (e, "skipping disabled control");
337 if (control.type == V4L2_CTRL_TYPE_CTRL_CLASS) {
338 GST_DEBUG_OBJECT (e, "starting control class '%s'", control.name);
342 switch (control.type) {
343 case V4L2_CTRL_TYPE_INTEGER:
344 case V4L2_CTRL_TYPE_BOOLEAN:
345 case V4L2_CTRL_TYPE_MENU:
346 case V4L2_CTRL_TYPE_INTEGER_MENU:
347 case V4L2_CTRL_TYPE_BITMASK:
348 case V4L2_CTRL_TYPE_BUTTON:{
349 control.name[31] = '\0';
350 gst_v4l2_normalise_control_name ((gchar *) control.name);
351 g_datalist_id_set_data (&v4l2object->controls,
352 g_quark_from_string ((const gchar *) control.name),
353 GINT_TO_POINTER (n));
358 "Control type for '%s' not suppored for extra controls.",
364 case V4L2_CID_BRIGHTNESS:
365 case V4L2_CID_CONTRAST:
366 case V4L2_CID_SATURATION:
368 case V4L2_CID_BLACK_LEVEL:
369 case V4L2_CID_AUTO_WHITE_BALANCE:
370 case V4L2_CID_DO_WHITE_BALANCE:
371 case V4L2_CID_RED_BALANCE:
372 case V4L2_CID_BLUE_BALANCE:
374 case V4L2_CID_EXPOSURE:
375 case V4L2_CID_AUTOGAIN:
377 case V4L2_CID_SHARPNESS:
378 /* we only handle these for now (why?) */
382 case V4L2_CID_PAN_RESET:
383 case V4L2_CID_TILT_RESET:
384 /* not handled here, handled by VideoOrientation interface */
387 case V4L2_CID_AUDIO_VOLUME:
388 case V4L2_CID_AUDIO_BALANCE:
389 case V4L2_CID_AUDIO_BASS:
390 case V4L2_CID_AUDIO_TREBLE:
391 case V4L2_CID_AUDIO_MUTE:
392 case V4L2_CID_AUDIO_LOUDNESS:
393 /* FIXME: We should implement GstMixer interface instead */
394 /* but let's not be pedantic and make element more useful for now */
396 case V4L2_CID_ALPHA_COMPONENT:
397 v4l2object->has_alpha_component = TRUE;
401 "ControlID %s (%x) unhandled, FIXME", control.name, n);
408 GST_DEBUG_OBJECT (e, "Adding ControlID %s (%x)", control.name, n);
409 v4l2channel = g_object_new (GST_TYPE_V4L2_COLOR_BALANCE_CHANNEL, NULL);
410 channel = GST_COLOR_BALANCE_CHANNEL (v4l2channel);
411 channel->label = g_strdup ((const gchar *) control.name);
415 /* FIXME: it will be need just when handling private controls
416 *(currently none of base controls are of this type) */
417 if (control.type == V4L2_CTRL_TYPE_MENU) {
418 struct v4l2_querymenu menu, *mptr;
425 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_QUERYMENU, &menu) < 0) {
427 break; /* end of enumeration */
429 GST_ELEMENT_ERROR (e, RESOURCE, SETTINGS,
430 (_("Failed getting controls attributes on device '%s'."),
431 v4l2object->videodev),
432 ("Failed to get %d in menu enumeration for %s. (%d - %s)",
433 n, v4l2object->videodev, errno, strerror (errno)));
437 mptr = g_malloc (sizeof (menu));
438 memcpy (mptr, &menu, sizeof (menu));
439 menus = g_list_append (menus, mptr);
442 v4l2object->menus = g_list_append (v4l2object->menus, menus);
445 switch (control.type) {
446 case V4L2_CTRL_TYPE_INTEGER:
447 channel->min_value = control.minimum;
448 channel->max_value = control.maximum;
450 case V4L2_CTRL_TYPE_BOOLEAN:
451 channel->min_value = FALSE;
452 channel->max_value = TRUE;
455 /* FIXME we should find out how to handle V4L2_CTRL_TYPE_BUTTON.
456 BUTTON controls like V4L2_CID_DO_WHITE_BALANCE can just be set (1) or
457 unset (0), but can't be queried */
459 "Control with non supported type %s (%x), type=%d",
460 control.name, n, control.type);
461 channel->min_value = channel->max_value = 0;
466 g_list_prepend (v4l2object->colors, (gpointer) channel);
468 v4l2object->colors = g_list_reverse (v4l2object->colors);
470 GST_DEBUG_OBJECT (e, "done");
476 gst_v4l2_empty_lists (GstV4l2Object * v4l2object)
478 GST_DEBUG_OBJECT (v4l2object->element, "deleting enumerations");
480 g_list_foreach (v4l2object->channels, (GFunc) g_object_unref, NULL);
481 g_list_free (v4l2object->channels);
482 v4l2object->channels = NULL;
484 g_list_foreach (v4l2object->norms, (GFunc) g_object_unref, NULL);
485 g_list_free (v4l2object->norms);
486 v4l2object->norms = NULL;
488 g_list_foreach (v4l2object->colors, (GFunc) g_object_unref, NULL);
489 g_list_free (v4l2object->colors);
490 v4l2object->colors = NULL;
492 g_datalist_clear (&v4l2object->controls);
496 gst_v4l2_adjust_buf_type (GstV4l2Object * v4l2object)
498 /* when calling gst_v4l2_object_new the user decides the initial type
499 * so adjust it if multi-planar is supported
500 * the driver should make it exclusive. So the driver should
501 * not support both MPLANE and non-PLANE.
502 * Because even when using MPLANE it still possibles to use it
503 * in a contiguous manner. In this case the first v4l2 plane
504 * contains all the gst planes.
506 switch (v4l2object->type) {
507 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
508 if (v4l2object->device_caps &
509 (V4L2_CAP_VIDEO_OUTPUT_MPLANE | V4L2_CAP_VIDEO_M2M_MPLANE)) {
510 GST_DEBUG ("adjust type to multi-planar output");
511 v4l2object->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
514 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
515 if (v4l2object->device_caps &
516 (V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_M2M_MPLANE)) {
517 GST_DEBUG ("adjust type to multi-planar capture");
518 v4l2object->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
526 /******************************************************
528 * open the video device (v4l2object->videodev)
529 * return value: TRUE on success, FALSE on error
530 ******************************************************/
532 gst_v4l2_open (GstV4l2Object * v4l2object)
536 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
537 int error_type = V4L2_OPEN_ERROR_STAT_FAILED;
538 int device_index = 0;
541 memset(&glob_buf, 0x0, sizeof(glob_t));
544 GST_ERROR("v4l2object is NULL");
547 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
549 GST_DEBUG_OBJECT (v4l2object->element, "Trying to open device %s",
550 v4l2object->videodev);
552 GST_V4L2_CHECK_NOT_OPEN (v4l2object);
553 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
555 /* be sure we have a device */
556 if (!v4l2object->videodev)
557 v4l2object->videodev = g_strdup ("/dev/video");
559 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
560 if (!v4l2object->videodev) {
561 GST_ERROR_OBJECT(v4l2object->element, "videodev is NULL");
566 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
567 /* check if it is a device */
568 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
569 if (stat (v4l2object->videodev, &st) == -1) {
570 error_type = V4L2_OPEN_ERROR_STAT_FAILED;
571 goto pre_error_check;
573 #else /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
574 if (stat (v4l2object->videodev, &st) == -1)
576 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
578 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
579 if (!S_ISCHR (st.st_mode)) {
580 error_type = V4L2_OPEN_ERROR_NO_DEVICE;
581 goto pre_error_check;
583 #else /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
584 if (!S_ISCHR (st.st_mode))
586 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
588 /* open the device */
589 v4l2object->video_fd =
590 open (v4l2object->videodev, O_RDWR /* | O_NONBLOCK */ );
592 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
593 if (!GST_V4L2_IS_OPEN (v4l2object)) {
594 error_type = V4L2_OPEN_ERROR_NOT_OPEN;
595 goto pre_error_check;
597 #else /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
598 if (!GST_V4L2_IS_OPEN (v4l2object))
600 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
602 libv4l2_fd = v4l2_fd_open (v4l2object->video_fd,
603 V4L2_ENABLE_ENUM_FMT_EMULATION);
604 /* Note the v4l2_xxx functions are designed so that if they get passed an
605 unknown fd, the will behave exactly as their regular xxx counterparts, so
606 if v4l2_fd_open fails, we continue as normal (missing the libv4l2 custom
607 cam format to normal formats conversion). Chances are big we will still
608 fail then though, as normally v4l2_fd_open only fails if the device is not
610 if (libv4l2_fd != -1)
611 v4l2object->video_fd = libv4l2_fd;
613 /* get capabilities, error will be posted */
614 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
615 if (!gst_v4l2_get_capabilities (v4l2object)) {
616 error_type = V4L2_OPEN_ERROR;
617 goto pre_error_check;
619 #else /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
620 if (!gst_v4l2_get_capabilities (v4l2object))
622 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
624 /* do we need to be a capture device? */
625 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
626 GST_INFO_OBJECT(v4l2object->element, "device_caps 0x%x", v4l2object->device_caps);
627 if (GST_IS_V4L2SRC (v4l2object->element) &&
628 (!(v4l2object->device_caps & (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_CAPTURE_MPLANE)) ||
629 (v4l2object->device_caps & (V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_VIDEO_OUTPUT_MPLANE)))) {
630 error_type = V4L2_OPEN_ERROR_NOT_CAPTURE;
631 goto pre_error_check;
633 #else /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
634 if (GST_IS_V4L2SRC (v4l2object->element) &&
635 !(v4l2object->device_caps & (V4L2_CAP_VIDEO_CAPTURE |
636 V4L2_CAP_VIDEO_CAPTURE_MPLANE)))
638 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
640 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
641 if (GST_IS_V4L2SINK (v4l2object->element) &&
642 !(v4l2object->device_caps & (V4L2_CAP_VIDEO_OUTPUT |
643 V4L2_CAP_VIDEO_OUTPUT_MPLANE))) {
644 error_type = V4L2_OPEN_ERROR_NOT_OUTPUT;
645 goto pre_error_check;
647 #else /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
648 if (GST_IS_V4L2SINK (v4l2object->element) &&
649 !(v4l2object->device_caps & (V4L2_CAP_VIDEO_OUTPUT |
650 V4L2_CAP_VIDEO_OUTPUT_MPLANE)))
652 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
654 if (GST_IS_V4L2_VIDEO_DEC (v4l2object->element) &&
655 /* Today's M2M device only expose M2M */
656 !((v4l2object->device_caps & (V4L2_CAP_VIDEO_M2M |
657 V4L2_CAP_VIDEO_M2M_MPLANE)) ||
658 /* But legacy driver may expose both CAPTURE and OUTPUT */
659 ((v4l2object->device_caps &
660 (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_CAPTURE_MPLANE)) &&
661 (v4l2object->device_caps &
662 (V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_VIDEO_OUTPUT_MPLANE)))))
665 gst_v4l2_adjust_buf_type (v4l2object);
667 /* create enumerations, posts errors. */
668 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
669 if (!gst_v4l2_fill_lists (v4l2object)) {
670 error_type = V4L2_OPEN_ERROR;
671 goto pre_error_check;
673 #else /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
674 if (!gst_v4l2_fill_lists (v4l2object))
676 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
678 GST_INFO_OBJECT (v4l2object->element,
679 "Opened device '%s' (%s) successfully",
680 v4l2object->vcap.card, v4l2object->videodev);
682 if (v4l2object->extra_controls)
683 gst_v4l2_set_controls (v4l2object, v4l2object->extra_controls);
685 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
687 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
689 /* UVC devices are never interlaced, and doing VIDIOC_TRY_FMT on them
690 * causes expensive and slow USB IO, so don't probe them for interlaced
692 if (!strcmp ((char *) v4l2object->vcap.driver, "uvcusb")) {
693 v4l2object->never_interlaced = TRUE;
698 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
701 if (GST_IS_V4L2SRC(v4l2object->element) && glob_buf.gl_pathc == 0) {
702 if (glob("/dev/video*", 0, 0, &glob_buf) != 0) {
703 GST_WARNING_OBJECT(v4l2object->element, "glob failed");
707 if (glob_buf.gl_pathc > 0 && device_index < glob_buf.gl_pathc) {
708 if (v4l2object->videodev) {
709 g_free(v4l2object->videodev);
710 v4l2object->videodev = NULL;
712 v4l2object->videodev = g_strdup(glob_buf.gl_pathv[device_index]);
713 if (v4l2object->videodev) {
715 GST_INFO_OBJECT(v4l2object->element, "check device [%s]",
716 v4l2object->videodev);
718 if (GST_V4L2_IS_OPEN (v4l2object)) {
720 v4l2_close (v4l2object->video_fd);
721 v4l2object->video_fd = -1;
724 gst_v4l2_empty_lists (v4l2object);
728 GST_WARNING_OBJECT(v4l2object->element, "g_strdup failed [%s]",
729 glob_buf.gl_pathv[device_index]);
733 GST_WARNING_OBJECT(v4l2object->element, "error type : %d", error_type);
735 switch (error_type) {
736 case V4L2_OPEN_ERROR_STAT_FAILED:
738 case V4L2_OPEN_ERROR_NO_DEVICE:
740 case V4L2_OPEN_ERROR_NOT_OPEN:
742 case V4L2_OPEN_ERROR_NOT_CAPTURE:
744 case V4L2_OPEN_ERROR_NOT_OUTPUT:
750 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
755 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, NOT_FOUND,
756 (_("Cannot identify device '%s'."), v4l2object->videodev),
762 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, NOT_FOUND,
763 (_("This isn't a device '%s'."), v4l2object->videodev),
769 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, OPEN_READ_WRITE,
770 (_("Could not open device '%s' for reading and writing."),
771 v4l2object->videodev), GST_ERROR_SYSTEM);
776 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, NOT_FOUND,
777 (_("Device '%s' is not a capture device."),
778 v4l2object->videodev),
779 ("Capabilities: 0x%x", v4l2object->device_caps));
784 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, NOT_FOUND,
785 (_("Device '%s' is not a output device."),
786 v4l2object->videodev),
787 ("Capabilities: 0x%x", v4l2object->device_caps));
792 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, NOT_FOUND,
793 (_("Device '%s' is not a M2M device."),
794 v4l2object->videodev),
795 ("Capabilities: 0x%x", v4l2object->device_caps));
800 if (GST_V4L2_IS_OPEN (v4l2object)) {
802 v4l2_close (v4l2object->video_fd);
803 v4l2object->video_fd = -1;
806 gst_v4l2_empty_lists (v4l2object);
808 #ifdef TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE
810 #endif /* TIZEN_FEATURE_V4L2SRC_SCAN_DEVICE_NODE */
817 gst_v4l2_dup (GstV4l2Object * v4l2object, GstV4l2Object * other)
819 GST_DEBUG_OBJECT (v4l2object->element, "Trying to dup device %s",
822 GST_V4L2_CHECK_OPEN (other);
823 GST_V4L2_CHECK_NOT_OPEN (v4l2object);
824 GST_V4L2_CHECK_NOT_ACTIVE (other);
825 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
827 v4l2object->vcap = other->vcap;
828 v4l2object->device_caps = other->device_caps;
829 gst_v4l2_adjust_buf_type (v4l2object);
831 v4l2object->video_fd = v4l2_dup (other->video_fd);
832 if (!GST_V4L2_IS_OPEN (v4l2object))
835 g_free (v4l2object->videodev);
836 v4l2object->videodev = g_strdup (other->videodev);
838 GST_INFO_OBJECT (v4l2object->element,
839 "Cloned device '%s' (%s) successfully",
840 v4l2object->vcap.card, v4l2object->videodev);
842 v4l2object->never_interlaced = other->never_interlaced;
848 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, OPEN_READ_WRITE,
849 (_("Could not dup device '%s' for reading and writing."),
850 v4l2object->videodev), GST_ERROR_SYSTEM);
857 /******************************************************
859 * close the video device (v4l2object->video_fd)
860 * return value: TRUE on success, FALSE on error
861 ******************************************************/
863 gst_v4l2_close (GstV4l2Object * v4l2object)
865 GST_DEBUG_OBJECT (v4l2object->element, "Trying to close %s",
866 v4l2object->videodev);
868 GST_V4L2_CHECK_OPEN (v4l2object);
869 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
872 v4l2_close (v4l2object->video_fd);
873 v4l2object->video_fd = -1;
876 gst_v4l2_empty_lists (v4l2object);
882 /******************************************************
883 * gst_v4l2_get_norm()
884 * Get the norm of the current device
885 * return value: TRUE on success, FALSE on error
886 ******************************************************/
888 gst_v4l2_get_norm (GstV4l2Object * v4l2object, v4l2_std_id * norm)
890 GST_DEBUG_OBJECT (v4l2object->element, "getting norm");
892 if (!GST_V4L2_IS_OPEN (v4l2object))
895 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_STD, norm) < 0)
903 GST_DEBUG ("Failed to get the current norm for device %s",
904 v4l2object->videodev);
910 /******************************************************
911 * gst_v4l2_set_norm()
912 * Set the norm of the current device
913 * return value: TRUE on success, FALSE on error
914 ******************************************************/
916 gst_v4l2_set_norm (GstV4l2Object * v4l2object, v4l2_std_id norm)
918 GST_DEBUG_OBJECT (v4l2object->element, "trying to set norm to "
919 "%" G_GINT64_MODIFIER "x", (guint64) norm);
921 if (!GST_V4L2_IS_OPEN (v4l2object))
924 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_S_STD, &norm) < 0)
932 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
933 (_("Failed to set norm for device '%s'."),
934 v4l2object->videodev), GST_ERROR_SYSTEM);
939 /******************************************************
940 * gst_v4l2_get_frequency():
941 * get the current frequency
942 * return value: TRUE on success, FALSE on error
943 ******************************************************/
945 gst_v4l2_get_frequency (GstV4l2Object * v4l2object,
946 gint tunernum, gulong * frequency)
948 struct v4l2_frequency freq = { 0, };
950 GstTunerChannel *channel;
952 GST_DEBUG_OBJECT (v4l2object->element, "getting current tuner frequency");
954 if (!GST_V4L2_IS_OPEN (v4l2object))
957 channel = gst_tuner_get_channel (GST_TUNER (v4l2object->element));
959 freq.tuner = tunernum;
960 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_FREQUENCY, &freq) < 0)
963 *frequency = freq.frequency * channel->freq_multiplicator;
970 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
971 (_("Failed to get current tuner frequency for device '%s'."),
972 v4l2object->videodev), GST_ERROR_SYSTEM);
978 /******************************************************
979 * gst_v4l2_set_frequency():
981 * return value: TRUE on success, FALSE on error
982 ******************************************************/
984 gst_v4l2_set_frequency (GstV4l2Object * v4l2object,
985 gint tunernum, gulong frequency)
987 struct v4l2_frequency freq = { 0, };
989 GstTunerChannel *channel;
991 GST_DEBUG_OBJECT (v4l2object->element,
992 "setting current tuner frequency to %lu", frequency);
994 if (!GST_V4L2_IS_OPEN (v4l2object))
997 channel = gst_tuner_get_channel (GST_TUNER (v4l2object->element));
999 freq.tuner = tunernum;
1000 /* fill in type - ignore error */
1001 (void) v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_FREQUENCY, &freq);
1002 freq.frequency = frequency / channel->freq_multiplicator;
1004 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_S_FREQUENCY, &freq) < 0)
1012 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
1013 (_("Failed to set current tuner frequency for device '%s' to %lu Hz."),
1014 v4l2object->videodev, frequency), GST_ERROR_SYSTEM);
1019 /******************************************************
1020 * gst_v4l2_signal_strength():
1021 * get the strength of the signal on the current input
1022 * return value: TRUE on success, FALSE on error
1023 ******************************************************/
1025 gst_v4l2_signal_strength (GstV4l2Object * v4l2object,
1026 gint tunernum, gulong * signal_strength)
1028 struct v4l2_tuner tuner = { 0, };
1030 GST_DEBUG_OBJECT (v4l2object->element, "trying to get signal strength");
1032 if (!GST_V4L2_IS_OPEN (v4l2object))
1035 tuner.index = tunernum;
1036 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_TUNER, &tuner) < 0)
1039 *signal_strength = tuner.signal;
1046 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
1047 (_("Failed to get signal strength for device '%s'."),
1048 v4l2object->videodev), GST_ERROR_SYSTEM);
1053 /******************************************************
1054 * gst_v4l2_get_attribute():
1055 * try to get the value of one specific attribute
1056 * return value: TRUE on success, FALSE on error
1057 ******************************************************/
1059 gst_v4l2_get_attribute (GstV4l2Object * v4l2object,
1060 int attribute_num, int *value)
1062 struct v4l2_control control = { 0, };
1064 GST_DEBUG_OBJECT (v4l2object->element, "getting value of attribute %d",
1067 if (!GST_V4L2_IS_OPEN (v4l2object))
1070 control.id = attribute_num;
1072 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_CTRL, &control) < 0)
1075 *value = control.value;
1082 GST_WARNING_OBJECT (v4l2object,
1083 _("Failed to get value for control %d on device '%s'."),
1084 attribute_num, v4l2object->videodev);
1090 /******************************************************
1091 * gst_v4l2_set_attribute():
1092 * try to set the value of one specific attribute
1093 * return value: TRUE on success, FALSE on error
1094 ******************************************************/
1096 gst_v4l2_set_attribute (GstV4l2Object * v4l2object,
1097 int attribute_num, const int value)
1099 struct v4l2_control control = { 0, };
1101 GST_DEBUG_OBJECT (v4l2object->element, "setting value of attribute %d to %d",
1102 attribute_num, value);
1104 if (!GST_V4L2_IS_OPEN (v4l2object))
1107 control.id = attribute_num;
1108 control.value = value;
1109 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_S_CTRL, &control) < 0)
1117 GST_WARNING_OBJECT (v4l2object,
1118 _("Failed to set value %d for control %d on device '%s'."),
1119 value, attribute_num, v4l2object->videodev);
1125 set_control (GQuark field_id, const GValue * value, gpointer user_data)
1127 GstV4l2Object *v4l2object = user_data;
1128 GQuark normalised_field_id;
1131 /* 32 bytes is the maximum size for a control name according to v4l2 */
1134 /* Backwards compatibility: in the past GStreamer would normalise strings in
1135 a subtly different way to v4l2-ctl. e.g. the kernel's "Focus (absolute)"
1136 would become "focus__absolute_" whereas now it becomes "focus_absolute".
1137 Please remove the following in GStreamer 1.5 for 1.6 */
1138 strncpy (name, g_quark_to_string (field_id), sizeof (name));
1140 gst_v4l2_normalise_control_name (name);
1141 normalised_field_id = g_quark_from_string (name);
1142 if (normalised_field_id != field_id)
1143 g_warning ("In GStreamer 1.4 the way V4L2 control names were normalised "
1144 "changed. Instead of setting \"%s\" please use \"%s\". The former is "
1145 "deprecated and will be removed in a future version of GStreamer",
1146 g_quark_to_string (field_id), name);
1147 field_id = normalised_field_id;
1149 d = g_datalist_id_get_data (&v4l2object->controls, field_id);
1151 GST_WARNING_OBJECT (v4l2object,
1152 "Control '%s' does not exist or has an unsupported type.",
1153 g_quark_to_string (field_id));
1156 if (!G_VALUE_HOLDS (value, G_TYPE_INT)) {
1157 GST_WARNING_OBJECT (v4l2object,
1158 "'int' value expected for control '%s'.", g_quark_to_string (field_id));
1161 gst_v4l2_set_attribute (v4l2object, GPOINTER_TO_INT (d),
1162 g_value_get_int (value));
1167 gst_v4l2_set_controls (GstV4l2Object * v4l2object, GstStructure * controls)
1169 return gst_structure_foreach (controls, set_control, v4l2object);
1173 gst_v4l2_get_input (GstV4l2Object * v4l2object, gint * input)
1177 GST_DEBUG_OBJECT (v4l2object->element, "trying to get input");
1179 if (!GST_V4L2_IS_OPEN (v4l2object))
1182 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_INPUT, &n) < 0)
1187 GST_DEBUG_OBJECT (v4l2object->element, "input: %d", n);
1193 if (v4l2object->device_caps & V4L2_CAP_TUNER) {
1194 /* only give a warning message if driver actually claims to have tuner
1197 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
1198 (_("Failed to get current input on device '%s'. May be it is a radio device"), v4l2object->videodev), GST_ERROR_SYSTEM);
1204 gst_v4l2_set_input (GstV4l2Object * v4l2object, gint input)
1206 GST_DEBUG_OBJECT (v4l2object->element, "trying to set input to %d", input);
1208 if (!GST_V4L2_IS_OPEN (v4l2object))
1211 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_S_INPUT, &input) < 0)
1218 if (v4l2object->device_caps & V4L2_CAP_TUNER) {
1219 /* only give a warning message if driver actually claims to have tuner
1222 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
1223 (_("Failed to set input %d on device %s."),
1224 input, v4l2object->videodev), GST_ERROR_SYSTEM);
1230 gst_v4l2_get_output (GstV4l2Object * v4l2object, gint * output)
1234 GST_DEBUG_OBJECT (v4l2object->element, "trying to get output");
1236 if (!GST_V4L2_IS_OPEN (v4l2object))
1239 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_OUTPUT, &n) < 0)
1244 GST_DEBUG_OBJECT (v4l2object->element, "output: %d", n);
1250 if (v4l2object->device_caps & V4L2_CAP_TUNER) {
1251 /* only give a warning message if driver actually claims to have tuner
1254 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
1255 (_("Failed to get current output on device '%s'. May be it is a radio device"), v4l2object->videodev), GST_ERROR_SYSTEM);
1261 gst_v4l2_set_output (GstV4l2Object * v4l2object, gint output)
1263 GST_DEBUG_OBJECT (v4l2object->element, "trying to set output to %d", output);
1265 if (!GST_V4L2_IS_OPEN (v4l2object))
1268 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_S_OUTPUT, &output) < 0)
1275 if (v4l2object->device_caps & V4L2_CAP_TUNER) {
1276 /* only give a warning message if driver actually claims to have tuner
1279 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
1280 (_("Failed to set output %d on device %s."),
1281 output, v4l2object->videodev), GST_ERROR_SYSTEM);