2 * Copyright (c) 2014 Philippe De Muyter <phdm@macqel.be>
3 * Copyright (c) 2014 William Manley <will@williammanley.net>
4 * Copyright (c) 2011 Peter Zotov <whitequark@whitequark.org>
5 * Copyright (c) 2014-2019 The strace developers.
8 * SPDX-License-Identifier: LGPL-2.1-or-later
14 #include <linux/ioctl.h>
15 #include <linux/types.h>
16 #include <linux/videodev2.h>
18 #include DEF_MPERS_TYPE(struct_v4l2_buffer)
19 #include DEF_MPERS_TYPE(struct_v4l2_clip)
20 #ifdef VIDIOC_CREATE_BUFS
21 # include DEF_MPERS_TYPE(struct_v4l2_create_buffers)
23 #include DEF_MPERS_TYPE(struct_v4l2_ext_control)
24 #include DEF_MPERS_TYPE(struct_v4l2_ext_controls)
25 #include DEF_MPERS_TYPE(struct_v4l2_format)
26 #include DEF_MPERS_TYPE(struct_v4l2_framebuffer)
27 #include DEF_MPERS_TYPE(struct_v4l2_input)
28 #include DEF_MPERS_TYPE(struct_v4l2_standard)
30 typedef struct v4l2_buffer struct_v4l2_buffer;
31 typedef struct v4l2_clip struct_v4l2_clip;
32 #ifdef VIDIOC_CREATE_BUFS
33 typedef struct v4l2_create_buffers struct_v4l2_create_buffers;
35 typedef struct v4l2_ext_control struct_v4l2_ext_control;
36 typedef struct v4l2_ext_controls struct_v4l2_ext_controls;
37 typedef struct v4l2_format struct_v4l2_format;
38 typedef struct v4l2_framebuffer struct_v4l2_framebuffer;
39 typedef struct v4l2_input struct_v4l2_input;
40 typedef struct v4l2_standard struct_v4l2_standard;
44 #include "print_fields.h"
45 #include "print_utils.h"
48 /* v4l2_fourcc_be was added by Linux commit v3.18-rc1~101^2^2~127 */
49 #ifndef v4l2_fourcc_be
50 # define v4l2_fourcc_be(a, b, c, d) (v4l2_fourcc(a, b, c, d) | (1U << 31))
53 #define FMT_FRACT "%u/%u"
54 #define ARGS_FRACT(x) ((x).numerator), ((x).denominator)
56 #define FMT_RECT "{left=%d, top=%d, width=%u, height=%u}"
57 #define ARGS_RECT(x) (x).left, (x).top, (x).width, (x).height
59 #include "xlat/v4l2_pix_fmts.h"
60 #include "xlat/v4l2_sdr_fmts.h"
63 print_pixelformat(uint32_t fourcc, const struct xlat *xlat)
66 (unsigned char) fourcc,
67 (unsigned char) (fourcc >> 8),
68 (unsigned char) (fourcc >> 16),
69 (unsigned char) (fourcc >> 24),
73 tprints("v4l2_fourcc(");
74 /* Generic char array printing routine. */
75 for (i = 0; i < ARRAY_SIZE(a); ++i) {
76 unsigned char c = a[i];
80 if (c == '\'' || c == '\\') {
89 } else if (is_print(c)) {
99 BYTE_HEX_CHARS_PRINTF_QUOTED(c),
108 const char *pixfmt_name = xlookup(xlat, fourcc);
111 tprints_comment(pixfmt_name);
115 #include "xlat/v4l2_device_capabilities_flags.h"
118 print_v4l2_capability(struct tcb *const tcp, const kernel_ulong_t arg)
120 struct v4l2_capability caps;
125 if (umove_or_printaddr(tcp, arg, &caps))
126 return RVAL_IOCTL_DECODED;
127 PRINT_FIELD_CSTRING("{", caps, driver);
128 PRINT_FIELD_CSTRING(", ", caps, card);
129 PRINT_FIELD_CSTRING(", ", caps, bus_info);
130 tprintf(", version=%u.%u.%u, capabilities=",
131 (caps.version >> 16) & 0xFF,
132 (caps.version >> 8) & 0xFF,
133 caps.version & 0xFF);
134 printflags(v4l2_device_capabilities_flags, caps.capabilities,
136 #ifdef V4L2_CAP_DEVICE_CAPS
137 tprints(", device_caps=");
138 printflags(v4l2_device_capabilities_flags, caps.device_caps,
142 return RVAL_IOCTL_DECODED;
145 #include "xlat/v4l2_buf_types.h"
146 #include "xlat/v4l2_format_description_flags.h"
149 print_v4l2_fmtdesc(struct tcb *const tcp, const kernel_ulong_t arg)
151 struct v4l2_fmtdesc f;
155 if (umove_or_printaddr(tcp, arg, &f))
156 return RVAL_IOCTL_DECODED;
157 tprintf("{index=%u, type=", f.index);
158 printxval(v4l2_buf_types, f.type, "V4L2_BUF_TYPE_???");
162 if (!syserror(tcp) && !umove(tcp, arg, &f)) {
164 printflags(v4l2_format_description_flags, f.flags,
165 "V4L2_FMT_FLAG_???");
166 PRINT_FIELD_CSTRING(", ", f, description);
167 tprints(", pixelformat=");
168 print_pixelformat(f.pixelformat, v4l2_pix_fmts);
171 return RVAL_IOCTL_DECODED;
174 #include "xlat/v4l2_fields.h"
175 #include "xlat/v4l2_colorspaces.h"
176 #include "xlat/v4l2_vbi_flags.h"
177 #include "xlat/v4l2_sliced_flags.h"
180 print_v4l2_clip(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
182 const struct_v4l2_clip *p = elem_buf;
183 tprintf(FMT_RECT, ARGS_RECT(p->c));
188 print_v4l2_format_fmt(struct tcb *const tcp, const char *prefix,
189 const struct_v4l2_format *f)
193 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
194 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
196 tprintf("fmt.pix={width=%u, height=%u, pixelformat=",
197 f->fmt.pix.width, f->fmt.pix.height);
198 print_pixelformat(f->fmt.pix.pixelformat, v4l2_pix_fmts);
200 printxval(v4l2_fields, f->fmt.pix.field, "V4L2_FIELD_???");
201 tprintf(", bytesperline=%u, sizeimage=%u, colorspace=",
202 f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
203 printxval(v4l2_colorspaces, f->fmt.pix.colorspace,
204 "V4L2_COLORSPACE_???");
207 #if HAVE_DECL_V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
208 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
209 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: {
213 tprintf("fmt.pix_mp={width=%u, height=%u, pixelformat=",
214 f->fmt.pix_mp.width, f->fmt.pix_mp.height);
215 print_pixelformat(f->fmt.pix_mp.pixelformat, v4l2_pix_fmts);
217 printxval(v4l2_fields, f->fmt.pix_mp.field, "V4L2_FIELD_???");
218 tprints(", colorspace=");
219 printxval(v4l2_colorspaces, f->fmt.pix_mp.colorspace,
220 "V4L2_COLORSPACE_???");
221 tprints(", plane_fmt=[");
222 max = f->fmt.pix_mp.num_planes;
223 if (max > VIDEO_MAX_PLANES)
224 max = VIDEO_MAX_PLANES;
225 for (i = 0; i < max; i++) {
228 tprintf("{sizeimage=%u, bytesperline=%u}",
229 f->fmt.pix_mp.plane_fmt[i].sizeimage,
230 f->fmt.pix_mp.plane_fmt[i].bytesperline);
232 tprintf("], num_planes=%u}",
233 (unsigned) f->fmt.pix_mp.num_planes);
237 /* OUTPUT_OVERLAY since Linux v2.6.22-rc1~1118^2~179 */
238 #if HAVE_DECL_V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
239 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
241 case V4L2_BUF_TYPE_VIDEO_OVERLAY: {
242 struct_v4l2_clip clip;
244 tprintf("fmt.win={left=%d, top=%d, width=%u, height=%u, field=",
245 ARGS_RECT(f->fmt.win.w));
246 printxval(v4l2_fields, f->fmt.win.field, "V4L2_FIELD_???");
247 tprintf(", chromakey=%#x, clips=", f->fmt.win.chromakey);
248 ret = print_array(tcp, ptr_to_kulong(f->fmt.win.clips),
249 f->fmt.win.clipcount, &clip, sizeof(clip),
250 tfetch_mem, print_v4l2_clip, 0);
251 tprintf(", clipcount=%u, bitmap=", f->fmt.win.clipcount);
252 printaddr(ptr_to_kulong(f->fmt.win.bitmap));
253 #ifdef HAVE_STRUCT_V4L2_WINDOW_GLOBAL_ALPHA
254 tprintf(", global_alpha=%#x", f->fmt.win.global_alpha);
259 case V4L2_BUF_TYPE_VBI_CAPTURE:
260 case V4L2_BUF_TYPE_VBI_OUTPUT:
262 tprintf("fmt.vbi={sampling_rate=%u, offset=%u, "
263 "samples_per_line=%u, sample_format=",
264 f->fmt.vbi.sampling_rate, f->fmt.vbi.offset,
265 f->fmt.vbi.samples_per_line);
266 print_pixelformat(f->fmt.vbi.sample_format, v4l2_pix_fmts);
267 tprintf(", start=[%u, %u], count=[%u, %u], ",
268 f->fmt.vbi.start[0], f->fmt.vbi.start[1],
269 f->fmt.vbi.count[0], f->fmt.vbi.count[1]);
271 printxval(v4l2_vbi_flags, f->fmt.vbi.flags, "V4L2_VBI_???");
274 /* both since Linux v2.6.14-rc2~64 */
275 #if HAVE_DECL_V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
276 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
277 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: {
281 tprints("fmt.sliced={service_set=");
282 printxval(v4l2_sliced_flags, f->fmt.sliced.service_set,
284 tprintf(", io_size=%u, service_lines=[",
285 f->fmt.sliced.io_size);
286 for (i = 0; i < ARRAY_SIZE(f->fmt.sliced.service_lines); i++) {
291 j < ARRAY_SIZE(f->fmt.sliced.service_lines[0]);
296 f->fmt.sliced.service_lines[i][j]);
304 /* since Linux v4.4-rc1~118^2~14 */
305 #if HAVE_DECL_V4L2_BUF_TYPE_SDR_OUTPUT
306 case V4L2_BUF_TYPE_SDR_OUTPUT:
308 /* since Linux v3.15-rc1~85^2~213 */
309 #if HAVE_DECL_V4L2_BUF_TYPE_SDR_CAPTURE
310 case V4L2_BUF_TYPE_SDR_CAPTURE:
312 tprints("fmt.sdr={pixelformat=");
313 print_pixelformat(f->fmt.sdr.pixelformat, v4l2_sdr_fmts);
314 # ifdef HAVE_STRUCT_V4L2_SDR_FORMAT_BUFFERSIZE
315 tprintf(", buffersize=%u",
316 f->fmt.sdr.buffersize);
326 print_v4l2_format(struct tcb *const tcp, const kernel_ulong_t arg,
329 struct_v4l2_format f;
333 if (umove_or_printaddr(tcp, arg, &f))
334 return RVAL_IOCTL_DECODED;
336 printxval(v4l2_buf_types, f.type, "V4L2_BUF_TYPE_???");
339 if (!print_v4l2_format_fmt(tcp, ", ", &f)) {
341 return RVAL_IOCTL_DECODED;
347 if (!syserror(tcp) && !umove(tcp, arg, &f))
348 print_v4l2_format_fmt(tcp, is_get ? ", " : " => ", &f);
352 return RVAL_IOCTL_DECODED;
355 #include "xlat/v4l2_memories.h"
358 print_v4l2_requestbuffers(struct tcb *const tcp, const kernel_ulong_t arg)
360 struct v4l2_requestbuffers reqbufs;
365 if (umove_or_printaddr(tcp, arg, &reqbufs))
366 return RVAL_IOCTL_DECODED;
369 printxval(v4l2_buf_types, reqbufs.type, "V4L2_BUF_TYPE_???");
370 tprints(", memory=");
371 printxval(v4l2_memories, reqbufs.memory, "V4L2_MEMORY_???");
372 tprintf(", count=%u", reqbufs.count);
377 if (!syserror(tcp)) {
380 if (!umove(tcp, arg, &reqbufs))
381 tprintf("%u", reqbufs.count);
388 return RVAL_IOCTL_DECODED;
391 #include "xlat/v4l2_buf_flags.h"
394 print_v4l2_buffer(struct tcb *const tcp, const unsigned int code,
395 const kernel_ulong_t arg)
397 struct_v4l2_buffer b;
401 if (umove_or_printaddr(tcp, arg, &b))
402 return RVAL_IOCTL_DECODED;
404 printxval(v4l2_buf_types, b.type, "V4L2_BUF_TYPE_???");
405 if (code != VIDIOC_DQBUF)
406 tprintf(", index=%u", b.index);
411 if (!syserror(tcp) && !umove(tcp, arg, &b)) {
412 if (code == VIDIOC_DQBUF)
413 tprintf(", index=%u", b.index);
414 tprints(", memory=");
415 printxval(v4l2_memories, b.memory, "V4L2_MEMORY_???");
417 if (b.memory == V4L2_MEMORY_MMAP) {
418 tprintf(", m.offset=%#x", b.m.offset);
419 } else if (b.memory == V4L2_MEMORY_USERPTR) {
420 tprints(", m.userptr=");
421 printaddr(b.m.userptr);
424 tprintf(", length=%u, bytesused=%u, flags=",
425 b.length, b.bytesused);
426 printflags(v4l2_buf_flags, b.flags, "V4L2_BUF_FLAG_???");
427 if (code == VIDIOC_DQBUF) {
428 tprints(", timestamp = ");
429 MPERS_FUNC_NAME(print_struct_timeval)(&b.timestamp);
436 return RVAL_IOCTL_DECODED;
440 print_v4l2_framebuffer(struct tcb *const tcp, const kernel_ulong_t arg)
442 struct_v4l2_framebuffer b;
445 if (!umove_or_printaddr(tcp, arg, &b)) {
446 tprintf("{capability=%#x, flags=%#x, base=",
447 b.capability, b.flags);
448 printaddr(ptr_to_kulong(b.base));
452 return RVAL_IOCTL_DECODED;
456 print_v4l2_buf_type(struct tcb *const tcp, const kernel_ulong_t arg)
461 if (!umove_or_printaddr(tcp, arg, &type)) {
463 printxval(v4l2_buf_types, type, "V4L2_BUF_TYPE_???");
466 return RVAL_IOCTL_DECODED;
469 #include "xlat/v4l2_streaming_capabilities.h"
470 #include "xlat/v4l2_capture_modes.h"
473 print_v4l2_streamparm(struct tcb *const tcp, const kernel_ulong_t arg,
476 struct v4l2_streamparm s;
480 if (umove_or_printaddr(tcp, arg, &s))
481 return RVAL_IOCTL_DECODED;
483 printxval(v4l2_buf_types, s.type, "V4L2_BUF_TYPE_???");
485 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
486 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
493 return RVAL_IOCTL_DECODED;
496 if (syserror(tcp) || umove(tcp, arg, &s) < 0) {
498 return RVAL_IOCTL_DECODED;
500 tprints(is_get ? ", " : " => ");
503 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
504 tprints("parm.capture={capability=");
505 printflags(v4l2_streaming_capabilities,
506 s.parm.capture.capability, "V4L2_CAP_???");
508 tprints(", capturemode=");
509 printflags(v4l2_capture_modes,
510 s.parm.capture.capturemode, "V4L2_MODE_???");
512 tprintf(", timeperframe=" FMT_FRACT,
513 ARGS_FRACT(s.parm.capture.timeperframe));
515 tprintf(", extendedmode=%u, readbuffers=%u}",
516 s.parm.capture.extendedmode,
517 s.parm.capture.readbuffers);
519 tprints("parm.output={capability=");
520 printflags(v4l2_streaming_capabilities,
521 s.parm.output.capability, "V4L2_CAP_???");
523 tprintf(", outputmode=%u", s.parm.output.outputmode);
525 tprintf(", timeperframe=" FMT_FRACT,
526 ARGS_FRACT(s.parm.output.timeperframe));
528 tprintf(", extendedmode=%u, writebuffers=%u}",
529 s.parm.output.extendedmode,
530 s.parm.output.writebuffers);
536 return RVAL_IOCTL_DECODED;
541 print_v4l2_standard(struct tcb *const tcp, const kernel_ulong_t arg)
543 struct_v4l2_standard s;
547 if (umove_or_printaddr(tcp, arg, &s))
548 return RVAL_IOCTL_DECODED;
549 tprintf("{index=%u", s.index);
554 if (!syserror(tcp) && !umove(tcp, arg, &s)) {
555 PRINT_FIELD_CSTRING(", ", s, name);
556 tprintf(", frameperiod=" FMT_FRACT,
557 ARGS_FRACT(s.frameperiod));
558 tprintf(", framelines=%d", s.framelines);
563 return RVAL_IOCTL_DECODED;
566 #include "xlat/v4l2_input_types.h"
569 print_v4l2_input(struct tcb *const tcp, const kernel_ulong_t arg)
575 if (umove_or_printaddr(tcp, arg, &i))
576 return RVAL_IOCTL_DECODED;
577 tprintf("{index=%u", i.index);
582 if (!syserror(tcp) && !umove(tcp, arg, &i)) {
583 PRINT_FIELD_CSTRING(", ", i, name);
585 printxval(v4l2_input_types, i.type, "V4L2_INPUT_TYPE_???");
590 return RVAL_IOCTL_DECODED;
594 * We include it here and not before print_v4l2_ext_controls as we need
595 * V4L2_CTRL_CLASS_* definitions for V4L2_CID_*_BASE ones.
597 #include "xlat/v4l2_control_classes.h"
598 #include "xlat/v4l2_control_id_bases.h"
599 #include "xlat/v4l2_control_ids.h"
602 print_v4l2_cid(const uint32_t cid)
604 const char *id_name = xlookup(v4l2_control_ids, cid);
607 print_xlat_ex(cid, id_name, XLAT_STYLE_DEFAULT);
611 uint64_t class_id = cid;
612 const char *class_str = xlookup_le(v4l2_control_classes, &class_id);
614 if (!class_str || (cid - class_id) >= 0x10000) {
615 print_xlat_ex(cid, "V4L2_CID_???", PXF_DEFAULT_STR);
621 if (asprintf(&tmp_str, "%s+%#" PRIx64,
622 class_str, cid - class_id) < 0)
625 print_xlat_ex(cid, tmp_str, XLAT_STYLE_DEFAULT);
630 print_v4l2_control(struct tcb *const tcp, const kernel_ulong_t arg,
633 struct v4l2_control c;
637 if (umove_or_printaddr(tcp, arg, &c))
638 return RVAL_IOCTL_DECODED;
641 print_v4l2_cid(c.id);
643 tprintf(", value=%d", c.value);
647 if (!syserror(tcp) && !umove(tcp, arg, &c)) {
648 tprints(is_get ? ", " : " => ");
649 tprintf("value=%d", c.value);
654 return RVAL_IOCTL_DECODED;
657 #include "xlat/v4l2_tuner_types.h"
658 #include "xlat/v4l2_tuner_capabilities.h"
659 #include "xlat/v4l2_tuner_rxsubchanses.h"
660 #include "xlat/v4l2_tuner_audmodes.h"
663 print_v4l2_tuner(struct tcb *const tcp, const kernel_ulong_t arg,
669 if (umove_or_printaddr(tcp, arg, &c))
670 return RVAL_IOCTL_DECODED;
671 tprintf("{index=%u", c.index);
676 if (syserror(tcp) || umove(tcp, arg, &c) < 0) {
678 return RVAL_IOCTL_DECODED;
680 tprints(is_get ? ", " : " => ");
683 PRINT_FIELD_CSTRING("", c, name);
685 printxval(v4l2_tuner_types, c.type, "V4L2_TUNER_TYPE_???");
686 tprints(", capability=");
687 printxval(v4l2_tuner_capabilities, c.capability,
688 "V4L2_TUNER_CAP_???");
689 tprintf(", rangelow=%u, rangehigh=%u, rxsubchans=",
690 c.rangelow, c.rangehigh);
691 printxval(v4l2_tuner_rxsubchanses, c.rxsubchans,
692 "V4L2_TUNER_SUB_???");
693 tprints(", audmode=");
694 printxval(v4l2_tuner_audmodes, c.audmode,
695 "V4L2_TUNER_MODE_???");
696 tprintf(", signal=%d, afc=%d", c.signal, c.afc);
702 return RVAL_IOCTL_DECODED;
706 #include "xlat/v4l2_control_types.h"
707 #include "xlat/v4l2_control_flags.h"
710 print_v4l2_queryctrl(struct tcb *const tcp, const kernel_ulong_t arg)
712 struct v4l2_queryctrl c;
716 if (umove_or_printaddr(tcp, arg, &c))
717 return RVAL_IOCTL_DECODED;
720 if (syserror(tcp) || umove(tcp, arg, &c) < 0) {
722 return RVAL_IOCTL_DECODED;
724 if (get_tcb_priv_ulong(tcp))
728 if (entering(tcp) || get_tcb_priv_ulong(tcp)) {
729 #ifdef V4L2_CTRL_FLAG_NEXT_CTRL
730 const unsigned long next = c.id & V4L2_CTRL_FLAG_NEXT_CTRL;
731 set_tcb_priv_ulong(tcp, next);
733 print_xlat(V4L2_CTRL_FLAG_NEXT_CTRL);
735 c.id &= ~V4L2_CTRL_FLAG_NEXT_CTRL;
738 printxval(v4l2_control_ids, c.id, "V4L2_CID_???");
743 printxval(v4l2_control_types, c.type, "V4L2_CTRL_TYPE_???");
744 PRINT_FIELD_CSTRING(", ", c, name);
745 tprintf(", minimum=%d, maximum=%d, step=%d"
746 ", default_value=%d, flags=",
747 c.minimum, c.maximum, c.step, c.default_value);
748 printflags(v4l2_control_flags, c.flags, "V4L2_CTRL_FLAG_???");
751 return entering(tcp) ? 0 : RVAL_IOCTL_DECODED;
755 print_v4l2_cropcap(struct tcb *const tcp, const kernel_ulong_t arg)
757 struct v4l2_cropcap c;
761 if (umove_or_printaddr(tcp, arg, &c))
762 return RVAL_IOCTL_DECODED;
764 printxval(v4l2_buf_types, c.type, "V4L2_BUF_TYPE_???");
769 if (!syserror(tcp) && !umove(tcp, arg, &c)) {
770 tprintf(", bounds=" FMT_RECT
771 ", defrect=" FMT_RECT
772 ", pixelaspect=" FMT_FRACT,
774 ARGS_RECT(c.defrect),
775 ARGS_FRACT(c.pixelaspect));
780 return RVAL_IOCTL_DECODED;
784 print_v4l2_crop(struct tcb *const tcp, const kernel_ulong_t arg,
791 if (umove_or_printaddr(tcp, arg, &c))
792 return RVAL_IOCTL_DECODED;
794 printxval(v4l2_buf_types, c.type, "V4L2_BUF_TYPE_???");
797 tprintf(", c=" FMT_RECT, ARGS_RECT(c.c));
799 if (!syserror(tcp) && !umove(tcp, arg, &c))
800 tprintf(", c=" FMT_RECT, ARGS_RECT(c.c));
805 return RVAL_IOCTL_DECODED;
808 #ifdef VIDIOC_S_EXT_CTRLS
810 print_v4l2_ext_control(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
812 const struct_v4l2_ext_control *p = elem_buf;
815 printxval(v4l2_control_ids, p->id, "V4L2_CID_???");
816 # if HAVE_DECL_V4L2_CTRL_TYPE_STRING
817 tprintf(", size=%u", p->size);
819 tprints(", string=");
820 printstrn(tcp, ptr_to_kulong(p->string), p->size);
823 tprintf(", value=%d, value64=%" PRId64, p->value, (int64_t) p->value64);
830 print_v4l2_ext_controls(struct tcb *const tcp, const kernel_ulong_t arg,
833 struct_v4l2_ext_controls c;
837 if (umove_or_printaddr(tcp, arg, &c))
838 return RVAL_IOCTL_DECODED;
839 tprints("{ctrl_class=");
840 printxval(v4l2_control_classes, c.ctrl_class,
841 "V4L2_CTRL_CLASS_???");
842 tprintf(", count=%u", c.count);
845 return RVAL_IOCTL_DECODED;
851 if (umove(tcp, arg, &c) < 0) {
853 return RVAL_IOCTL_DECODED;
855 tprints(is_get ? ", " : " => ");
858 tprints("controls=");
859 struct_v4l2_ext_control ctrl;
860 bool fail = !print_array(tcp, ptr_to_kulong(c.controls), c.count,
862 tfetch_mem_ignore_syserror,
863 print_v4l2_ext_control, 0);
865 if (exiting(tcp) && syserror(tcp))
866 tprintf(", error_idx=%u", c.error_idx);
868 if (exiting(tcp) || fail) {
870 return RVAL_IOCTL_DECODED;
876 #endif /* VIDIOC_S_EXT_CTRLS */
878 #ifdef VIDIOC_ENUM_FRAMESIZES
879 # include "xlat/v4l2_framesize_types.h"
882 print_v4l2_frmsizeenum(struct tcb *const tcp, const kernel_ulong_t arg)
884 struct v4l2_frmsizeenum s;
888 if (umove_or_printaddr(tcp, arg, &s))
889 return RVAL_IOCTL_DECODED;
890 tprintf("{index=%u, pixel_format=", s.index);
891 print_pixelformat(s.pixel_format, v4l2_pix_fmts);
895 if (!syserror(tcp) && !umove(tcp, arg, &s)) {
897 printxval(v4l2_framesize_types, s.type, "V4L2_FRMSIZE_TYPE_???");
899 case V4L2_FRMSIZE_TYPE_DISCRETE:
900 tprintf(", discrete={width=%u, height=%u}",
901 s.discrete.width, s.discrete.height);
903 case V4L2_FRMSIZE_TYPE_STEPWISE:
904 tprintf(", stepwise={min_width=%u, max_width=%u, "
905 "step_width=%u, min_height=%u, max_height=%u, "
907 s.stepwise.min_width, s.stepwise.max_width,
908 s.stepwise.step_width, s.stepwise.min_height,
909 s.stepwise.max_height, s.stepwise.step_height);
914 return RVAL_IOCTL_DECODED;
916 #endif /* VIDIOC_ENUM_FRAMESIZES */
918 #ifdef VIDIOC_ENUM_FRAMEINTERVALS
919 # include "xlat/v4l2_frameinterval_types.h"
922 print_v4l2_frmivalenum(struct tcb *const tcp, const kernel_ulong_t arg)
924 struct v4l2_frmivalenum f;
928 if (umove_or_printaddr(tcp, arg, &f))
929 return RVAL_IOCTL_DECODED;
930 tprintf("{index=%u, pixel_format=", f.index);
931 print_pixelformat(f.pixel_format, v4l2_pix_fmts);
932 tprintf(", width=%u, height=%u", f.width, f.height);
936 if (!syserror(tcp) && !umove(tcp, arg, &f)) {
938 printxval(v4l2_frameinterval_types, f.type,
939 "V4L2_FRMIVAL_TYPE_???");
941 case V4L2_FRMIVAL_TYPE_DISCRETE:
942 tprintf(", discrete=" FMT_FRACT,
943 ARGS_FRACT(f.discrete));
945 case V4L2_FRMIVAL_TYPE_STEPWISE:
946 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
947 tprintf(", stepwise={min=" FMT_FRACT ", max="
948 FMT_FRACT ", step=" FMT_FRACT "}",
949 ARGS_FRACT(f.stepwise.min),
950 ARGS_FRACT(f.stepwise.max),
951 ARGS_FRACT(f.stepwise.step));
958 return RVAL_IOCTL_DECODED;
960 #endif /* VIDIOC_ENUM_FRAMEINTERVALS */
962 #ifdef VIDIOC_CREATE_BUFS
964 print_v4l2_create_buffers(struct tcb *const tcp, const kernel_ulong_t arg)
966 static const char fmt[] = "{index=%u, count=%u}";
967 static char outstr[sizeof(fmt) + sizeof(int) * 6];
969 struct_v4l2_create_buffers b;
973 if (umove_or_printaddr(tcp, arg, &b))
974 return RVAL_IOCTL_DECODED;
975 tprintf("{count=%u, memory=", b.count);
976 printxval(v4l2_memories, b.memory, "V4L2_MEMORY_???");
977 tprints(", format={type=");
978 printxval(v4l2_buf_types, b.format.type,
979 "V4L2_BUF_TYPE_???");
980 print_v4l2_format_fmt(tcp, ", ",
981 (struct_v4l2_format *) &b.format);
986 if (syserror(tcp) || umove(tcp, arg, &b))
987 return RVAL_IOCTL_DECODED;
989 xsprintf(outstr, fmt, b.index, b.count);
990 tcp->auxstr = outstr;
992 return RVAL_IOCTL_DECODED | RVAL_STR;
994 #endif /* VIDIOC_CREATE_BUFS */
996 MPERS_PRINTER_DECL(int, v4l2_ioctl, struct tcb *const tcp,
997 const unsigned int code, const kernel_ulong_t arg)
1000 return RVAL_DECODED;
1003 case VIDIOC_QUERYCAP: /* R */
1004 return print_v4l2_capability(tcp, arg);
1006 case VIDIOC_ENUM_FMT: /* RW */
1007 return print_v4l2_fmtdesc(tcp, arg);
1009 case VIDIOC_G_FMT: /* RW */
1010 case VIDIOC_S_FMT: /* RW */
1011 case VIDIOC_TRY_FMT: /* RW */
1012 return print_v4l2_format(tcp, arg, code == VIDIOC_G_FMT);
1014 case VIDIOC_REQBUFS: /* RW */
1015 return print_v4l2_requestbuffers(tcp, arg);
1017 case VIDIOC_QUERYBUF: /* RW */
1018 case VIDIOC_QBUF: /* RW */
1019 case VIDIOC_DQBUF: /* RW */
1020 return print_v4l2_buffer(tcp, code, arg);
1022 case VIDIOC_G_FBUF: /* R */
1025 ATTRIBUTE_FALLTHROUGH;
1026 case VIDIOC_S_FBUF: /* W */
1027 return print_v4l2_framebuffer(tcp, arg);
1029 case VIDIOC_STREAMON: /* W */
1030 case VIDIOC_STREAMOFF: /* W */
1031 return print_v4l2_buf_type(tcp, arg);
1033 case VIDIOC_G_PARM: /* RW */
1034 case VIDIOC_S_PARM: /* RW */
1035 return print_v4l2_streamparm(tcp, arg, code == VIDIOC_G_PARM);
1037 case VIDIOC_G_STD: /* R */
1040 ATTRIBUTE_FALLTHROUGH;
1041 case VIDIOC_S_STD: /* W */
1043 printnum_int64(tcp, arg, "%#" PRIx64);
1046 case VIDIOC_ENUMSTD: /* RW */
1047 return print_v4l2_standard(tcp, arg);
1049 case VIDIOC_ENUMINPUT: /* RW */
1050 return print_v4l2_input(tcp, arg);
1052 case VIDIOC_G_CTRL: /* RW */
1053 case VIDIOC_S_CTRL: /* RW */
1054 return print_v4l2_control(tcp, arg, code == VIDIOC_G_CTRL);
1056 case VIDIOC_G_TUNER: /* RW */
1057 case VIDIOC_S_TUNER: /* RW */
1058 return print_v4l2_tuner(tcp, arg, code == VIDIOC_G_TUNER);
1060 case VIDIOC_QUERYCTRL: /* RW */
1061 return print_v4l2_queryctrl(tcp, arg);
1063 case VIDIOC_G_INPUT: /* R */
1066 ATTRIBUTE_FALLTHROUGH;
1067 case VIDIOC_S_INPUT: /* RW */
1069 printnum_int(tcp, arg, "%u");
1072 case VIDIOC_CROPCAP: /* RW */
1073 return print_v4l2_cropcap(tcp, arg);
1075 case VIDIOC_G_CROP: /* RW */
1076 case VIDIOC_S_CROP: /* W */
1077 return print_v4l2_crop(tcp, arg, code == VIDIOC_G_CROP);
1079 #ifdef VIDIOC_S_EXT_CTRLS
1080 case VIDIOC_S_EXT_CTRLS: /* RW */
1081 case VIDIOC_TRY_EXT_CTRLS: /* RW */
1082 case VIDIOC_G_EXT_CTRLS: /* RW */
1083 return print_v4l2_ext_controls(tcp, arg,
1084 code == VIDIOC_G_EXT_CTRLS);
1085 #endif /* VIDIOC_S_EXT_CTRLS */
1087 #ifdef VIDIOC_ENUM_FRAMESIZES
1088 case VIDIOC_ENUM_FRAMESIZES: /* RW */
1089 return print_v4l2_frmsizeenum(tcp, arg);
1090 #endif /* VIDIOC_ENUM_FRAMESIZES */
1092 #ifdef VIDIOC_ENUM_FRAMEINTERVALS
1093 case VIDIOC_ENUM_FRAMEINTERVALS: /* RW */
1094 return print_v4l2_frmivalenum(tcp, arg);
1095 #endif /* VIDIOC_ENUM_FRAMEINTERVALS */
1097 #ifdef VIDIOC_CREATE_BUFS
1098 case VIDIOC_CREATE_BUFS: /* RW */
1099 return print_v4l2_create_buffers(tcp, arg);
1100 #endif /* VIDIOC_CREATE_BUFS */
1103 return RVAL_DECODED;
1106 return RVAL_IOCTL_DECODED;