glebfm/strace
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
68ba190f0a
strace/v4l2.c
Mike Frysinger bfe6d04d9c v4l2: use uintmax_t for times 
There is no guarantee that the backing value for the various time fields
are ints or longs which makes printfs annoying.  Lets cast them to the
uintmax_t type so we can use the j flag and not worry about truncation.

* v4l2.c (v4l2_ioctl): Use j and uintmax_t when printing tv_sec/tv_usec.
2015-02-26 20:00:03 +00:00

663 lines
17 KiB
C
Raw Blame History

/*
* Copyright (c) 2014 Philippe De Muyter <phdm@macqel.be>
* Copyright (c) 2014 William Manley <will@williammanley.net>
* Copyright (c) 2011 Peter Zotov <whitequark@whitequark.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#include <stdint.h>
#include <sys/ioctl.h>
#include <linux/types.h>
#include <linux/videodev2.h>
/* some historical constants */
#ifndef V4L2_CID_HCENTER
#define V4L2_CID_HCENTER (V4L2_CID_BASE+22)
#endif
#ifndef V4L2_CID_VCENTER
#define V4L2_CID_VCENTER (V4L2_CID_BASE+23)
#endif
#ifndef V4L2_CID_BAND_STOP_FILTER
#define V4L2_CID_BAND_STOP_FILTER (V4L2_CID_BASE+33)
#endif
#include "xlat/v4l2_device_capabilities_flags.h"
#include "xlat/v4l2_buf_types.h"
#include "xlat/v4l2_buf_flags.h"
#include "xlat/v4l2_framesize_types.h"
#include "xlat/v4l2_frameinterval_types.h"
#include "xlat/v4l2_fields.h"
#include "xlat/v4l2_colorspaces.h"
#include "xlat/v4l2_format_description_flags.h"
#include "xlat/v4l2_memories.h"
#include "xlat/v4l2_control_ids.h"
#include "xlat/v4l2_control_types.h"
#include "xlat/v4l2_control_flags.h"
#include "xlat/v4l2_control_classes.h"
#include "xlat/v4l2_streaming_capabilities.h"
#include "xlat/v4l2_capture_modes.h"
#include "xlat/v4l2_input_types.h"
#define FMT_FRACT "%u/%u"
#define ARGS_FRACT(x) ((x).numerator), ((x).denominator)
#define FMT_RECT "{left=%i, top=%i, width=%i, height=%i}"
#define ARGS_RECT(x) (x).left, (x).top, (x).width, (x).height
static void print_pixelformat(uint32_t fourcc)
{
union {
uint32_t pixelformat;
unsigned char cc[sizeof(uint32_t)];
} u = {
.pixelformat =
#if WORDS_BIGENDIAN
htole32(fourcc)
#else
fourcc
#endif
};
unsigned int i;
tprints("v4l2_fourcc(");
for (i = 0; i < sizeof(u.cc); ++i) {
unsigned int c = u.cc[i];
if (i)
tprints(", ");
if (c == ' ' ||
(c >= '0' && c <= '9') ||
(c >= 'A' && c <= 'Z') ||
(c >= 'a' && c <= 'z')) {
char sym[] = {
'\'',
u.cc[i],
'\''
};
tprints(sym);
} else {
char hex[] = {
'\'',
'\\',
'x',
"0123456789abcdef"[c >> 4],
"0123456789abcdef"[c & 0xf],
'\'',
'\0'
};
tprints(hex);
}
}
tprints(")");
}
static void print_v4l2_format_fmt(const struct v4l2_format *f)
{
tprints("fmt.");
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT: {
const struct v4l2_pix_format *pix = &f->fmt.pix;
tprintf("pix={width=%u, height=%u, pixelformat=",
pix->width, pix->height);
print_pixelformat(pix->pixelformat);
tprints(", field=");
printxval(v4l2_fields, pix->field, "V4L2_FIELD_???");
tprintf(", bytesperline=%u, sizeimage=%u, colorspace=",
pix->bytesperline, pix->sizeimage);
printxval(v4l2_colorspaces, pix->colorspace,
"V4L2_COLORSPACE_???");
tprints("}");
break;
}
#if HAVE_DECL_V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: {
const struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
unsigned int i, max;
tprintf("pix_mp={width=%u, height=%u, pixelformat=",
pix_mp->width, pix_mp->height);
print_pixelformat(pix_mp->pixelformat);
tprints(", field=");
printxval(v4l2_fields, pix_mp->field, "V4L2_FIELD_???");
tprints(", colorspace=");
printxval(v4l2_colorspaces, pix_mp->colorspace,
"V4L2_COLORSPACE_???");
tprints("plane_fmt=[");
max = pix_mp->num_planes;
if (max > VIDEO_MAX_PLANES)
max = VIDEO_MAX_PLANES;
for (i = 0; i < max; i++) {
if (i > 0)
tprints(", ");
tprintf("{sizeimage=%u, bytesperline=%u}",
pix_mp->plane_fmt[i].sizeimage,
pix_mp->plane_fmt[i].bytesperline);
}
tprintf("], num_planes=%u}", (unsigned) pix_mp->num_planes);
break;
}
#endif
/* TODO: Complete this switch statement */
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
#if HAVE_DECL_V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
#endif
tprints("win={???}");
break;
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
tprints("vbi={???}");
break;
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
tprints("sliced={???}");
break;
default:
tprints("???");
break;
}
}
int
v4l2_ioctl(struct tcb *tcp, const unsigned int code, long arg)
{
if (!verbose(tcp))
return 0;
switch (code) {
case VIDIOC_QUERYCAP: /* decode on exit */ {
struct v4l2_capability caps;
if (entering(tcp) || syserror(tcp) || umove(tcp, arg, &caps) < 0)
return 0;
tprints(", {driver=");
print_quoted_string((const char *) caps.driver,
sizeof(caps.driver), QUOTE_0_TERMINATED);
tprints(", card=");
print_quoted_string((const char *) caps.card,
sizeof(caps.card), QUOTE_0_TERMINATED);
tprints(", bus_info=");
print_quoted_string((const char *) caps.bus_info,
sizeof(caps.bus_info), QUOTE_0_TERMINATED);
tprintf(", version=%u.%u.%u, capabilities=",
(caps.version >> 16) & 0xFF,
(caps.version >> 8) & 0xFF,
caps.version & 0xFF);
printflags(v4l2_device_capabilities_flags, caps.capabilities,
"V4L2_CAP_???");
#ifdef V4L2_CAP_DEVICE_CAPS
tprints(", device_caps=");
printflags(v4l2_device_capabilities_flags, caps.device_caps,
"V4L2_CAP_???");
#endif
tprints("}");
return 1;
}
#ifdef VIDIOC_ENUM_FRAMESIZES
case VIDIOC_ENUM_FRAMESIZES: /* decode on exit */ {
struct v4l2_frmsizeenum s;
if (entering(tcp) || umove(tcp, arg, &s) < 0)
return 0;
tprintf(", {index=%u, pixel_format=", s.index);
print_pixelformat(s.pixel_format);
if (!syserror(tcp)) {
tprints(", type=");
printxval(v4l2_framesize_types, s.type, "V4L2_FRMSIZE_TYPE_???");
switch (s.type) {
case V4L2_FRMSIZE_TYPE_DISCRETE:
tprintf(", discrete={width=%u, height=%u}",
s.discrete.width, s.discrete.height);
break;
case V4L2_FRMSIZE_TYPE_STEPWISE:
tprintf(", stepwise={min_width=%u, max_width=%u, "
"step_width=%u, min_height=%u, max_height=%u, "
"step_height=%u}",
s.stepwise.min_width, s.stepwise.max_width,
s.stepwise.step_width, s.stepwise.min_height,
s.stepwise.max_height, s.stepwise.step_height);
break;
}
}
tprints("}");
return 1;
}
#endif /* VIDIOC_ENUM_FRAMESIZES */
case VIDIOC_G_FMT:
case VIDIOC_S_FMT:
case VIDIOC_TRY_FMT: {
struct v4l2_format f;
if (umove(tcp, arg, &f) < 0)
return 0;
if (entering(tcp)) {
tprints(", {type=");
printxval(v4l2_buf_types, f.type, "V4L2_BUF_TYPE_???");
}
if ((entering(tcp) && code != VIDIOC_G_FMT)
|| (exiting(tcp) && !syserror(tcp))) {
tprints(exiting(tcp) && code != VIDIOC_G_FMT ? " => " : ", ");
print_v4l2_format_fmt(&f);
}
if (exiting(tcp))
tprints("}");
return 1;
}
case VIDIOC_ENUM_FMT: {
struct v4l2_fmtdesc f;
if (entering(tcp) || umove(tcp, arg, &f) < 0)
return 0;
tprintf(", {index=%u", f.index);
if (!syserror(tcp)) {
tprints(", type=");
printxval(v4l2_buf_types, f.type, "V4L2_BUF_TYPE_???");
tprints(", flags=");
printflags(v4l2_format_description_flags, f.flags,
"V4L2_FMT_FLAG_???");
tprints(", description=");
print_quoted_string((const char *) f.description,
sizeof(f.description),
QUOTE_0_TERMINATED);
tprints(", pixelformat=");
print_pixelformat(f.pixelformat);
}
tprints("}");
return 1;
}
case VIDIOC_G_PARM:
case VIDIOC_S_PARM: {
struct v4l2_streamparm s;
if (entering(tcp) && code == VIDIOC_G_PARM)
return 1;
if (exiting(tcp) && syserror(tcp))
return code == VIDIOC_S_PARM;
if (umove(tcp, arg, &s) < 0)
return 0;
if (entering(tcp)) {
tprints(", {type=");
printxval(v4l2_buf_types, s.type, "V4L2_BUF_TYPE_???");
}
tprints(exiting(tcp) && code == VIDIOC_S_PARM ? " => {" : ", {");
if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
struct v4l2_captureparm *cap = &s.parm.capture;
tprints("capability=");
printflags(v4l2_streaming_capabilities,
cap->capability, "V4L2_CAP_???");
tprints(", capturemode=");
printflags(v4l2_capture_modes,
cap->capturemode, "V4L2_MODE_???");
tprintf(", timeperframe=" FMT_FRACT,
ARGS_FRACT(cap->timeperframe));
tprintf(", extendedmode=%u, readbuffers=%u",
cap->extendedmode,
cap->readbuffers);
} else
tprints("...");
tprints("}");
if (exiting(tcp))
tprints("}");
return 1;
}
case VIDIOC_QUERYCTRL: {
struct v4l2_queryctrl c;
if (umove(tcp, arg, &c) < 0)
return 0;
/* 'id' field must be printed :
* on enter
* on exit if !syserror(tcp) && V4L2_CTRL_FLAG_NEXT_CTRL was set
*/
if (entering(tcp)
|| (exiting(tcp) && tcp->auxstr && !syserror(tcp))) {
tprints(exiting(tcp) ? " => " : ", {id=");
#ifdef V4L2_CTRL_FLAG_NEXT_CTRL
tcp->auxstr = (c.id & V4L2_CTRL_FLAG_NEXT_CTRL) ? "" : NULL;
if (tcp->auxstr) {
tprints("V4L2_CTRL_FLAG_NEXT_CTRL|");
c.id &= ~V4L2_CTRL_FLAG_NEXT_CTRL;
}
#endif
printxval(v4l2_control_ids, c.id, "V4L2_CID_???");
}
if (exiting(tcp)) {
if (!syserror(tcp)) {
tprints(", type=");
printxval(v4l2_control_types, c.type,
"V4L2_CTRL_TYPE_???");
tprints(", name=");
print_quoted_string((const char *) c.name,
sizeof(c.name),
QUOTE_0_TERMINATED);
tprintf(", minimum=%i, maximum=%i, step=%i, "
"default_value=%i, flags=",
c.minimum, c.maximum,
c.step, c.default_value);
printflags(v4l2_control_flags, c.flags,
"V4L2_CTRL_FLAG_???");
}
tprints("}");
}
return 1;
}
case VIDIOC_G_CTRL:
case VIDIOC_S_CTRL: {
struct v4l2_control c;
if (entering(tcp) || umove(tcp, arg, &c) < 0)
return 0;
tprints(", {id=");
printxval(v4l2_control_ids, c.id, "V4L2_CID_???");
if (!syserror(tcp) || code != VIDIOC_G_CTRL)
tprintf(", value=%i", c.value);
tprints("}");
return 1;
}
#ifdef VIDIOC_S_EXT_CTRLS
case VIDIOC_S_EXT_CTRLS:
case VIDIOC_TRY_EXT_CTRLS:
case VIDIOC_G_EXT_CTRLS: {
struct v4l2_ext_controls c;
unsigned int n;
bool must_print_values;
if (entering(tcp) && code == VIDIOC_G_EXT_CTRLS)
return 0;
if (exiting(tcp) && syserror(tcp) && code != VIDIOC_G_EXT_CTRLS)
return 0;
must_print_values = ((entering(tcp) && code != VIDIOC_G_EXT_CTRLS)
|| (exiting(tcp) && !syserror(tcp)));
if (umove(tcp, arg, &c) < 0)
return 0;
tprints(code != VIDIOC_G_EXT_CTRLS && exiting(tcp) ? " => " : ", ");
tprints("{ctrl_class=");
printxval(v4l2_control_classes, c.ctrl_class,
"V4L2_CTRL_CLASS_???");
tprintf(", count=%u", c.count);
if (exiting(tcp) && syserror(tcp))
tprintf(", error_idx=%u", c.error_idx);
tprints(", controls=[");
for (n = 0; n < c.count; ++n) {
struct v4l2_ext_control ctrl;
if (n > 0)
tprints(", ");
if (umove(tcp, (long) (c.controls + n), &ctrl) < 0)
break;
if (abbrev(tcp) && n == 2) {
tprints("...");
break;
}
tprints("{id=");
printxval(v4l2_control_ids, ctrl.id, "V4L2_CID_???");
# if HAVE_DECL_V4L2_CTRL_TYPE_STRING
tprintf(", size=%u", ctrl.size);
if (ctrl.size > 0) {
if (must_print_values) {
tprints(", string=");
printstr(tcp, (long) ctrl.string, ctrl.size);
}
} else
# endif
{
if (must_print_values) {
tprintf(", value=%i, value64=%lld", ctrl.value,
(long long) ctrl.value64);
}
}
tprints("}");
}
tprints("]}");
return 1;
}
#endif /* VIDIOC_S_EXT_CTRLS */
case VIDIOC_ENUMSTD: {
struct v4l2_standard s;
if (umove(tcp, arg, &s) < 0)
return 0;
if (entering(tcp))
tprintf(", {index=%i", s.index);
else {
if (!syserror(tcp)) {
tprints(", name=");
print_quoted_string((const char *) s.name,
sizeof(s.name),
QUOTE_0_TERMINATED);
tprintf(", frameperiod=" FMT_FRACT, ARGS_FRACT(s.frameperiod));
tprintf(", framelines=%i", s.framelines);
}
tprints("}");
}
return 1;
}
case VIDIOC_G_STD:
case VIDIOC_S_STD: {
v4l2_std_id s;
if (code == VIDIOC_G_STD && exiting(tcp) && syserror(tcp))
return 0;
if (umove(tcp, arg, &s) < 0)
return 0;
if ((code == VIDIOC_S_STD) == entering(tcp))
tprintf(", std=%#llx", (unsigned long long) s);
return 1;
}
case VIDIOC_ENUMINPUT: {
struct v4l2_input i;
if (entering(tcp) || umove(tcp, arg, &i) < 0)
return 0;
tprintf(", {index=%i", i.index);
if (!syserror(tcp)) {
tprints(", name=");
print_quoted_string((const char *) i.name,
sizeof(i.name), QUOTE_0_TERMINATED);
tprints(", type=");
printxval(v4l2_input_types, i.type,
"V4L2_INPUT_TYPE_???");
}
tprints("}");
return 1;
}
case VIDIOC_G_INPUT:
case VIDIOC_S_INPUT: {
int index;
if (entering(tcp) || syserror(tcp) || umove(tcp, arg, &index) < 0)
return 0;
tprintf(", index=%i", index);
return 1;
}
#ifdef VIDIOC_ENUM_FRAMEINTERVALS
case VIDIOC_ENUM_FRAMEINTERVALS: {
struct v4l2_frmivalenum f;
if (entering(tcp) || umove(tcp, arg, &f) < 0)
return 0;
tprintf(", {index=%i, pixel_format=", f.index);
print_pixelformat(f.pixel_format);
tprintf(", width=%u, height=%u", f.width, f.height);
if (!syserror(tcp)) {
tprints(", type=");
printxval(v4l2_frameinterval_types, f.type,
"V4L2_FRMIVAL_TYPE_???");
switch (f.type) {
case V4L2_FRMIVAL_TYPE_DISCRETE:
tprintf(", discrete=" FMT_FRACT,
ARGS_FRACT(f.discrete));
break;
case V4L2_FRMIVAL_TYPE_STEPWISE:
case V4L2_FRMSIZE_TYPE_CONTINUOUS:
tprintf(", stepwise={min=" FMT_FRACT ", max="
FMT_FRACT ", step=" FMT_FRACT "}",
ARGS_FRACT(f.stepwise.min),
ARGS_FRACT(f.stepwise.max),
ARGS_FRACT(f.stepwise.step));
break;
}
}
tprints("}");
return 1;
}
#endif /* VIDIOC_ENUM_FRAMEINTERVALS */
case VIDIOC_CROPCAP: {
struct v4l2_cropcap c;
if (entering(tcp) || umove(tcp, arg, &c) < 0)
return 0;
tprints(", type=");
printxval(v4l2_buf_types, c.type, "V4L2_BUF_TYPE_???");
if (syserror(tcp))
return 1;
tprintf(", bounds=" FMT_RECT ", defrect=" FMT_RECT ", "
"pixelaspect=" FMT_FRACT, ARGS_RECT(c.bounds),
ARGS_RECT(c.defrect), ARGS_FRACT(c.pixelaspect));
return 1;
}
case VIDIOC_G_FBUF:
case VIDIOC_S_FBUF: {
struct v4l2_framebuffer b;
if (syserror(tcp) && code == VIDIOC_G_FBUF)
return 0;
if (entering(tcp) || umove(tcp, arg, &b) < 0)
return 0;
tprintf(", {capability=%x, flags=%x, base=%p}",
b.capability, b.flags, b.base);
return 1;
}
case VIDIOC_REQBUFS: {
struct v4l2_requestbuffers reqbufs;
if (umove(tcp, arg, &reqbufs) < 0)
return 0;
if (entering(tcp)) {
tprintf(", {count=%u, type=", reqbufs.count);
printxval(v4l2_buf_types, reqbufs.type, "V4L2_BUF_TYPE_???");
tprints(", memory=");
printxval(v4l2_memories, reqbufs.memory, "V4L2_MEMORY_???");
tprints("}");
return 1;
} else if (syserror(tcp))
return 1;
else {
static char outstr[sizeof("{count=}") + sizeof(int) * 3];
sprintf(outstr, "{count=%u}", reqbufs.count);
tcp->auxstr = outstr;
return 1 + RVAL_STR;
}
}
case VIDIOC_QUERYBUF:
case VIDIOC_QBUF:
case VIDIOC_DQBUF: {
struct v4l2_buffer b;
if (umove(tcp, arg, &b) < 0)
return 0;
if (entering(tcp)) {
tprints(", {type=");
printxval(v4l2_buf_types, b.type, "V4L2_BUF_TYPE_???");
if (code != VIDIOC_DQBUF)
tprintf(", index=%u", b.index);
} else {
if (!syserror(tcp)) {
if (code == VIDIOC_DQBUF)
tprintf(", index=%u", b.index);
tprints(", memory=");
printxval(v4l2_memories, b.memory, "V4L2_MEMORY_???");
if (b.memory == V4L2_MEMORY_MMAP) {
tprintf(", m.offset=%#x", b.m.offset);
} else if (b.memory == V4L2_MEMORY_USERPTR) {
tprintf(", m.userptr=%#lx", b.m.userptr);
}
tprintf(", length=%u, bytesused=%u, flags=",
b.length, b.bytesused);
printflags(v4l2_buf_flags, b.flags, "V4L2_BUF_FLAG_???");
if (code == VIDIOC_DQBUF)
tprintf(", timestamp = {%ju.%06ju}",
(uintmax_t)b.timestamp.tv_sec,
(uintmax_t)b.timestamp.tv_usec);
tprints(", ...");
}
tprints("}");
}
return 1;
}
case VIDIOC_STREAMON:
case VIDIOC_STREAMOFF: {
int type;
if (umove(tcp, arg, &type) < 0)
return 0;
if (entering(tcp)) {
tprints(", ");
printxval(v4l2_buf_types, type, "V4L2_BUF_TYPE_???");
}
return 1;
}
default: /* decode on exit */
return 0;
}
}
Reference in New Issue View Git Blame Copy Permalink