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Патч: 0001-Description-Linux-2.6.38-and-later-do-not-support-th.patch
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From: Bernd Zeimetz <bernd@bzed.de>
Date: Fri, 1 Apr 2011 00:44:36 +0200
Subject: Description: Linux 2.6.38 and later do not support the v4l1 API.
Migrate to using the libv4l library to abstract our access to Linux video
devices, instead.
Author: Mauro Carvalho Chehab
Bug-Ubuntu: http://bugs.launchpad.net/bugs/724997
Bug-Debian: http://bugs.debian.org/620220
Bug: http://sourceforge.net/tracker/?func=detail&aid=3128542&group_id=189236&atid=928517
---
configure.ac | 11 +-
include/config.h.in | 13 +-
zbar/Makefile.am.inc | 18 +--
zbar/video/v4l1.c | 435 -----------------------------------------------
zbar/video/v4l2.c | 70 +++++---
zbarcam/Makefile.am.inc | 2 +
6 files changed, 64 insertions(+), 485 deletions(-)
delete mode 100644 zbar/video/v4l1.c
diff --git a/configure.ac b/configure.ac
index 56d3dd0..53168c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -147,20 +147,13 @@ AC_ARG_ENABLE([video],
with_video="no"
AS_IF([test "x$enable_video" != "xno"],
[AS_IF([test "x$win32" = "xno"],
- [AC_CHECK_HEADERS([linux/videodev.h], [with_video="v4l1"],
- [AC_MSG_FAILURE([test for video support failed!
-rebuild your kernel to include video4linux support or
-configure --disable-video to skip building video support.])])
- AC_CHECK_HEADERS([linux/videodev2.h], [with_video="v4l2"],
+ [AC_CHECK_LIB([v4l2], [v4l2_open], [],
[AC_MSG_WARN([v4l2 API not detected, upgrade your kernel!])])],
[AC_CHECK_HEADERS([vfw.h], [with_video="vfw"],
[AC_MSG_FAILURE([test for VfW video support failed!
configure --disable-video to skip building vidoe support.])])])
])
AM_CONDITIONAL([HAVE_VIDEO], [test "x$enable_video" != "xno"])
-AM_CONDITIONAL([HAVE_V4L1],
- [test "x$with_video" = "xv4l1" || test "x$with_video" = "xv4l2"])
-AM_CONDITIONAL([HAVE_V4L2], [test "x$with_video" = "xv4l2"])
dnl X
AC_ARG_VAR([XSHM_LIBS], [linker flags for X shared memory extension])
@@ -442,7 +435,7 @@ echo "please verify that the detected configuration matches your expectations:"
echo "------------------------------------------------------------------------"
echo "X --with-x=$have_x"
echo "pthreads --enable-pthread=$enable_pthread"
-echo "v4l --enable-video=$enable_video"
+echo "v4l2 --enable-video=$enable_video"
AS_IF([test "x$enable_video" != "xyes"],
[echo " => zbarcam video scanner will *NOT* be built"])
echo "jpeg --with-jpeg=$with_jpeg"
diff --git a/include/config.h.in b/include/config.h.in
index 6950d05..aecc6b7 100644
--- a/include/config.h.in
+++ b/include/config.h.in
@@ -48,11 +48,8 @@
/* Define to 1 if you have the `pthread' library (-lpthread). */
#undef HAVE_LIBPTHREAD
-/* Define to 1 if you have the <linux/videodev2.h> header file. */
-#undef HAVE_LINUX_VIDEODEV2_H
-
-/* Define to 1 if you have the <linux/videodev.h> header file. */
-#undef HAVE_LINUX_VIDEODEV_H
+/* Define to 1 if you have the `v4l2' library (-lv4l2). */
+#undef HAVE_LIBV4L2
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
@@ -93,6 +90,9 @@
/* Define to 1 if you have the <sys/mman.h> header file. */
#undef HAVE_SYS_MMAN_H
+/* Define to 1 if you have the <sys/param.h> header file. */
+#undef HAVE_SYS_PARAM_H
+
/* Define to 1 if you have the <sys/shm.h> header file. */
#undef HAVE_SYS_SHM_H
@@ -160,6 +160,9 @@
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
/* Define to the version of this package. */
#undef PACKAGE_VERSION
diff --git a/zbar/Makefile.am.inc b/zbar/Makefile.am.inc
index 8d38484..1a5ce8d 100644
--- a/zbar/Makefile.am.inc
+++ b/zbar/Makefile.am.inc
@@ -53,21 +53,17 @@ else
zbar_libzbar_la_SOURCES += zbar/processor/posix.h zbar/processor/posix.c
endif
-if HAVE_V4L1
-zbar_libzbar_la_SOURCES += zbar/video/v4l1.c
-if HAVE_V4L2
-zbar_libzbar_la_SOURCES += zbar/video/v4l2.c
-endif
-endif
-if WIN32
if HAVE_VIDEO
+if WIN32
zbar_libzbar_la_SOURCES += zbar/video/vfw.c
zbar_libzbar_la_LIBADD += -lvfw32
-endif
-endif
-if !HAVE_VIDEO
+else
+zbar_libzbar_la_SOURCES += zbar/video/v4l2.c
+zbar_libzbar_la_LDFLAGS += -lv4l2
+endif #WIN32
+else
zbar_libzbar_la_SOURCES += zbar/video/null.c
-endif
+endif #HAVE_VIDEO
if HAVE_JPEG
zbar_libzbar_la_SOURCES += zbar/jpeg.c
diff --git a/zbar/video/v4l1.c b/zbar/video/v4l1.c
deleted file mode 100644
index 89b1da2..0000000
--- a/zbar/video/v4l1.c
+++ /dev/null
@@ -1,435 +0,0 @@
-/*------------------------------------------------------------------------
- * Copyright 2007-2009 (c) Jeff Brown <spadix@users.sourceforge.net>
- *
- * This file is part of the ZBar Bar Code Reader.
- *
- * The ZBar Bar Code Reader is free software; you can redistribute it
- * and/or modify it under the terms of the GNU Lesser Public License as
- * published by the Free Software Foundation; either version 2.1 of
- * the License, or (at your option) any later version.
- *
- * The ZBar Bar Code Reader is distributed in the hope that it will be
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser Public License for more details.
- *
- * You should have received a copy of the GNU Lesser Public License
- * along with the ZBar Bar Code Reader; if not, write to the Free
- * Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301 USA
- *
- * http://sourceforge.net/projects/zbar
- *------------------------------------------------------------------------*/
-
-#include <config.h>
-#ifdef HAVE_INTTYPES_H
-# include <inttypes.h>
-#endif
-#ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <assert.h>
-#ifdef HAVE_SYS_IOCTL_H
-# include <sys/ioctl.h>
-#endif
-#ifdef HAVE_SYS_MMAN_H
-# include <sys/mman.h>
-#endif
-#include <linux/videodev.h>
-
-#include "video.h"
-#include "image.h"
-
-extern int _zbar_v4l2_probe(zbar_video_t*);
-
-typedef struct v4l1_format_s {- uint32_t format;
- uint8_t bpp;
-} v4l1_format_t;
-
-/* static v4l1 "palette" mappings
- * documentation for v4l1 formats is terrible...
- */
-static const v4l1_format_t v4l1_formats[17] = {- /* format bpp */
- { 0, 0 },- { fourcc('G','R','E','Y'), 8 }, /* GREY */- { fourcc('H','I','2','4'), 8 }, /* HI240 (BT848) */-
- /* component ordering for RGB palettes is unspecified,
- * convention appears to place red in the most significant bits
- * FIXME is this true for other drivers? big endian machines?
- */
- { fourcc('R','G','B','P'), 16 }, /* RGB565 */- { fourcc('B','G','R','3'), 24 }, /* RGB24 */- { fourcc('B','G','R','4'), 32 }, /* RGB32 */- { fourcc('R','G','B','O'), 16 }, /* RGB555 */- { fourcc('Y','U','Y','2'), 16 }, /* YUV422 (8 bpp?!) */- { fourcc('Y','U','Y','V'), 16 }, /* YUYV */- { fourcc('U','Y','V','Y'), 16 }, /* UYVY */- { 0, 12 }, /* YUV420 (24 bpp?) FIXME?! */- { fourcc('Y','4','1','P'), 12 }, /* YUV411 */- { 0, 0 }, /* Bt848 raw */- { fourcc('4','2','2','P'), 16 }, /* YUV422P (24 bpp?) */- { fourcc('4','1','1','P'), 12 }, /* YUV411P */- { fourcc('Y','U','1','2'), 12 }, /* YUV420P */- { fourcc('Y','U','V','9'), 9 }, /* YUV410P */-};
-
-static int v4l1_nq (zbar_video_t *vdo,
- zbar_image_t *img)
-{- if(video_nq_image(vdo, img))
- return(-1);
-
- if(vdo->iomode != VIDEO_MMAP)
- return(0);
-
- struct video_mmap vmap;
- vmap.frame = img->srcidx;
- vmap.width = vdo->width;
- vmap.height = vdo->height;
- vmap.format = vdo->palette;
- if(ioctl(vdo->fd, VIDIOCMCAPTURE, &vmap) < 0)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "initiating video capture (VIDIOCMCAPTURE)"));
-
- return(0);
-}
-
-static zbar_image_t *v4l1_dq (zbar_video_t *vdo)
-{- video_iomode_t iomode = vdo->iomode;
- int fd = vdo->fd;
- zbar_image_t *img = video_dq_image(vdo);
- if(!img)
- return(NULL);
-
- if(iomode == VIDEO_MMAP) {- int frame = img->srcidx;
- if(ioctl(fd, VIDIOCSYNC, &frame) < 0)
- return(NULL);
- }
- else if(read(fd, (void*)img->data, img->datalen) != img->datalen)
- return(NULL);
-
- return(img);
-}
-
-static int v4l1_mmap_buffers (zbar_video_t *vdo)
-{-#ifdef HAVE_SYS_MMAN_H
- /* map camera image to memory */
- struct video_mbuf vbuf;
- memset(&vbuf, 0, sizeof(vbuf));
- if(ioctl(vdo->fd, VIDIOCGMBUF, &vbuf) < 0)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "querying video frame buffers (VIDIOCGMBUF)"));
- assert(vbuf.frames && vbuf.size);
-
- zprintf(1, "mapping %d buffers size=0x%x\n", vbuf.frames, vbuf.size);
- vdo->buflen = vbuf.size;
- vdo->buf = mmap(0, vbuf.size, PROT_READ | PROT_WRITE, MAP_SHARED,
- vdo->fd, 0);
- if(vdo->buf == MAP_FAILED)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "mapping video frame buffers"));
-
- int i;
- for(i = 0; i < vbuf.frames; i++) {- zbar_image_t *img = vdo->images[i];
- zprintf(2, " [%02d] @%08x\n", img->srcidx, vbuf.offsets[i]);
- img->data = vdo->buf + vbuf.offsets[i];
- img->datalen = vdo->datalen;
- int next_offset = ((i + 1 < vdo->num_images)
- ? vbuf.offsets[i + 1]
- : vbuf.size);
- if(next_offset < vbuf.offsets[i] + vdo->datalen)
- fprintf(stderr, "WARNING: insufficient v4l1 video buffer size:\n"
- "\tvbuf[%d]=%x vbuf[%d]=%x datalen=%lx\n"
- "\timage=%d x %d %.4s(%08x) palette=%d\n",
- i, vbuf.offsets[i], i + 1, next_offset,
- vdo->datalen, vdo->width, vdo->height,
- (char*)&vdo->format, vdo->format, vdo->palette);
- }
- return(0);
-#else
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_UNSUPPORTED, __func__,
- "memory mapping not supported"));
-#endif
-}
-
-static int v4l1_start (zbar_video_t *vdo)
-{- return(0);
-}
-
-static int v4l1_stop (zbar_video_t *vdo)
-{- return(0);
-}
-
-static inline int v4l1_set_format (zbar_video_t *vdo,
- uint32_t fmt)
-{- struct video_picture vpic;
- memset(&vpic, 0, sizeof(vpic));
- if(ioctl(vdo->fd, VIDIOCGPICT, &vpic) < 0)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "querying video format (VIDIOCGPICT)"));
-
- vdo->palette = 0;
- int ifmt;
- for(ifmt = 1; ifmt <= VIDEO_PALETTE_YUV410P; ifmt++)
- if(v4l1_formats[ifmt].format == fmt)
- break;
- if(!fmt || ifmt >= VIDEO_PALETTE_YUV410P)
- return(err_capture_int(vdo, SEV_ERROR, ZBAR_ERR_INVALID, __func__,
- "invalid v4l1 format: %x", fmt));
-
- vpic.palette = ifmt;
- vpic.depth = v4l1_formats[ifmt].bpp;
- if(ioctl(vdo->fd, VIDIOCSPICT, &vpic) < 0)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "setting format (VIDIOCSPICT)"));
-
- memset(&vpic, 0, sizeof(vpic));
- if(ioctl(vdo->fd, VIDIOCGPICT, &vpic) < 0)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "querying video format (VIDIOCGPICT)"));
-
- if(vpic.palette != ifmt || vpic.depth != v4l1_formats[ifmt].bpp) {- fprintf(stderr,
- "WARNING: set v4l1 palette %d which should have depth %d bpp\n"
- " but probed palette %d with depth %d bpp?"
- " ...continuing anyway\n",
- ifmt, v4l1_formats[ifmt].bpp, vpic.palette, vpic.depth);
- err_capture_int(vdo, SEV_WARNING, ZBAR_ERR_INVALID, __func__,
- "driver format (%x) inconsistency", fmt);
- }
- vdo->format = fmt;
- vdo->palette = ifmt;
- vdo->datalen = (vdo->width * vdo->height * v4l1_formats[ifmt].bpp + 7) >> 3;
-
- zprintf(1, "set new format: %.4s(%08x) depth=%d palette=%d size=0x%lx\n",
- (char*)&vdo->format, vdo->format, vpic.depth, vdo->palette,
- vdo->datalen);
- return(0);
-}
-
-static int v4l1_init (zbar_video_t *vdo,
- uint32_t fmt)
-{- if(v4l1_set_format(vdo, fmt))
- return(-1);
- if(vdo->iomode == VIDEO_MMAP && v4l1_mmap_buffers(vdo))
- return(-1);
- return(0);
-}
-
-static int v4l1_cleanup (zbar_video_t *vdo)
-{-#ifdef HAVE_SYS_MMAN_H
- /* FIXME should avoid holding onto mmap'd buffers so long? */
- if(vdo->iomode == VIDEO_MMAP && vdo->buf) {- if(munmap(vdo->buf, vdo->buflen))
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "unmapping video frame buffers"));
- vdo->buf = NULL;
- /* FIXME reset image */
- }
-#endif
-
- /* close open device */
- if(vdo->fd >= 0) {- close(vdo->fd);
- vdo->fd = -1;
- }
- return(0);
-}
-
-static int v4l1_probe_iomode (zbar_video_t *vdo)
-{- vdo->iomode = VIDEO_READWRITE;
-#ifdef HAVE_SYS_MMAN_H
- struct video_mbuf vbuf;
- memset(&vbuf, 0, sizeof(vbuf));
- if(ioctl(vdo->fd, VIDIOCGMBUF, &vbuf) < 0) {- if(errno != EINVAL)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "querying video frame buffers (VIDIOCGMBUF)"));
- /* not supported */
- return(0);
- }
- if(!vbuf.frames || !vbuf.size)
- return(0);
- vdo->iomode = VIDEO_MMAP;
- if(vdo->num_images > vbuf.frames)
- vdo->num_images = vbuf.frames;
-#endif
- zprintf(1, "using %d images in %s mode\n", vdo->num_images,
- (vdo->iomode == VIDEO_READWRITE) ? "READ" : "MMAP");
- return(0);
-}
-
-static inline int v4l1_probe_formats (zbar_video_t *vdo)
-{- struct video_picture vpic;
- memset(&vpic, 0, sizeof(vpic));
- if(ioctl(vdo->fd, VIDIOCGPICT, &vpic) < 0)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "querying format (VIDIOCGPICT)"));
-
- vdo->format = 0;
- if(vpic.palette <= VIDEO_PALETTE_YUV410P)
- vdo->format = v4l1_formats[vpic.palette].format;
-
- zprintf(1, "current format: %.4s(%08x) depth=%d palette=%d\n",
- (char*)&vdo->format, vdo->format, vpic.depth, vpic.palette);
-
- vdo->formats = calloc(16, sizeof(uint32_t));
- if(!vdo->formats)
- return(err_capture(vdo, SEV_FATAL, ZBAR_ERR_NOMEM, __func__,
- "allocating format list"));
-
- int num_formats = 0;
- zprintf(2, "probing supported formats:\n");
- int i;
- for(i = 1; i <= VIDEO_PALETTE_YUV410P; i++) {- if(!v4l1_formats[i].format)
- continue;
- vpic.depth = v4l1_formats[i].bpp;
- vpic.palette = i;
- if(ioctl(vdo->fd, VIDIOCSPICT, &vpic) < 0) {- zprintf(2, " [%02d] %.4s...no (set fails)\n",
- i, (char*)&v4l1_formats[i].format);
- continue;
- }
- if(ioctl(vdo->fd, VIDIOCGPICT, &vpic) < 0 ||
- vpic.palette != i) {- zprintf(2, " [%02d] %.4s...no (set ignored)\n",
- i, (char*)&v4l1_formats[i].format);
- continue;
- }
- zprintf(2, " [%02d] %.4s...yes\n",
- i, (char*)&v4l1_formats[i].format);
- vdo->formats[num_formats++] = v4l1_formats[i].format;
- }
- vdo->formats = realloc(vdo->formats, (num_formats + 1) * sizeof(uint32_t));
- assert(vdo->formats);
-
- return(v4l1_set_format(vdo, vdo->format));
-}
-
-static inline int v4l1_init_window (zbar_video_t *vdo)
-{- struct video_window vwin;
- memset(&vwin, 0, sizeof(vwin));
- if(ioctl(vdo->fd, VIDIOCGWIN, &vwin) < 0)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "querying video window settings (VIDIOCGWIN)"));
-
- zprintf(1, "current window: %d x %d @(%d, %d)%s\n",
- vwin.width, vwin.height, vwin.x, vwin.y,
- (vwin.flags & 1) ? " INTERLACE" : "");
-
- if(vwin.width == vdo->width && vwin.height == vdo->height)
- /* max window already set */
- return(0);
-
- struct video_window maxwin;
- memcpy(&maxwin, &vwin, sizeof(maxwin));
- maxwin.width = vdo->width;
- maxwin.height = vdo->height;
-
- zprintf(1, "setting max win: %d x %d @(%d, %d)%s\n",
- maxwin.width, maxwin.height, maxwin.x, maxwin.y,
- (maxwin.flags & 1) ? " INTERLACE" : "");
- if(ioctl(vdo->fd, VIDIOCSWIN, &maxwin) < 0) {- zprintf(1, "set FAILED...trying to recover original window\n");
- /* ignore errors (driver broken anyway) */
- ioctl(vdo->fd, VIDIOCSWIN, &vwin);
- }
-
- /* re-query resulting parameters */
- memset(&vwin, 0, sizeof(vwin));
- if(ioctl(vdo->fd, VIDIOCGWIN, &vwin) < 0)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "querying video window settings (VIDIOCGWIN)"));
-
- zprintf(1, " final window: %d x %d @(%d, %d)%s\n",
- vwin.width, vwin.height, vwin.x, vwin.y,
- (vwin.flags & 1) ? " INTERLACE" : "");
- vdo->width = vwin.width;
- vdo->height = vwin.height;
- return(0);
-}
-
-static int _zbar_v4l1_probe (zbar_video_t *vdo)
-{- /* check capabilities */
- struct video_capability vcap;
- memset(&vcap, 0, sizeof(vcap));
- if(ioctl(vdo->fd, VIDIOCGCAP, &vcap) < 0)
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_UNSUPPORTED, __func__,
- "video4linux version 1 not supported (VIDIOCGCAP)"));
-
- zprintf(1, "%s (%sCAPTURE) (%d x %d) - (%d x %d)\n",
- vcap.name, (vcap.type & VID_TYPE_CAPTURE) ? "" : "*NO* ",
- vcap.minwidth, vcap.minheight, vcap.maxwidth, vcap.maxheight);
-
- if(!(vcap.type & VID_TYPE_CAPTURE))
- return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_UNSUPPORTED, __func__,
- "v4l1 device does not support CAPTURE"));
-
- if(!vdo->width || !vdo->height) {- vdo->width = vcap.maxwidth;
- vdo->height = vcap.maxheight;
- }
-
- if(v4l1_init_window(vdo) ||
- v4l1_probe_formats(vdo) ||
- v4l1_probe_iomode(vdo))
- return(-1);
-
- vdo->intf = VIDEO_V4L1;
- vdo->init = v4l1_init;
- vdo->cleanup = v4l1_cleanup;
- vdo->start = v4l1_start;
- vdo->stop = v4l1_stop;
- vdo->nq = v4l1_nq;
- vdo->dq = v4l1_dq;
- return(0);
-}
-
-int _zbar_video_open (zbar_video_t *vdo,
- const char *dev)
-{- vdo->fd = open(dev, O_RDWR);
- if(vdo->fd < 0)
- return(err_capture_str(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
- "opening video device '%s'", dev));
- zprintf(1, "opened camera device %s (fd=%d)\n", dev, vdo->fd);
-
- int rc = -1;
-#ifdef HAVE_LINUX_VIDEODEV2_H
- if(vdo->intf != VIDEO_V4L1)
- rc = _zbar_v4l2_probe(vdo);
- if(rc)
-#else
- zprintf(1, "WARNING: not compiled with v4l2 support, trying v4l1\n");
-#endif
- rc = _zbar_v4l1_probe(vdo);
-
- if(rc && vdo->fd >= 0) {- close(vdo->fd);
- vdo->fd = -1;
- }
- return(rc);
-}
diff --git a/zbar/video/v4l2.c b/zbar/video/v4l2.c
index ec59bd8..065091e 100644
--- a/zbar/video/v4l2.c
+++ b/zbar/video/v4l2.c
@@ -38,6 +38,8 @@
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
+#include <fcntl.h>
+#include <libv4l2.h>
#include <linux/videodev2.h>
#include "video.h"
@@ -67,7 +69,7 @@ static int v4l2_nq (zbar_video_t *vdo,
vbuf.length = img->datalen;
vbuf.index = img->srcidx; /* FIXME workaround broken drivers */
}
- if(ioctl(vdo->fd, VIDIOC_QBUF, &vbuf) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_QBUF, &vbuf) < 0)
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"queuing video buffer (VIDIOC_QBUF)"));
return(0);
@@ -91,7 +93,7 @@ static zbar_image_t *v4l2_dq (zbar_video_t *vdo)
else
vbuf.memory = V4L2_MEMORY_USERPTR;
- if(ioctl(fd, VIDIOC_DQBUF, &vbuf) < 0)
+ if(v4l2_ioctl(fd, VIDIOC_DQBUF, &vbuf) < 0)
return(NULL);
if(iomode == VIDEO_MMAP) {@@ -132,7 +134,7 @@ static int v4l2_start (zbar_video_t *vdo)
return(0);
enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- if(ioctl(vdo->fd, VIDIOC_STREAMON, &type) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_STREAMON, &type) < 0)
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"starting video stream (VIDIOC_STREAMON)"));
return(0);
@@ -144,7 +146,7 @@ static int v4l2_stop (zbar_video_t *vdo)
return(0);
enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- if(ioctl(vdo->fd, VIDIOC_STREAMOFF, &type) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_STREAMOFF, &type) < 0)
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"stopping video stream (VIDIOC_STREAMOFF)"));
return(0);
@@ -164,7 +166,7 @@ static int v4l2_cleanup (zbar_video_t *vdo)
for(i = 0; i < vdo->num_images; i++) {zbar_image_t *img = vdo->images[i];
if(img->data &&
- munmap((void*)img->data, img->datalen))
+ v4l2_munmap((void*)img->data, img->datalen))
err_capture(vdo, SEV_WARNING, ZBAR_ERR_SYSTEM, __func__,
"unmapping video frame buffers");
img->data = NULL;
@@ -177,27 +179,27 @@ static int v4l2_cleanup (zbar_video_t *vdo)
/* requesting 0 buffers
* should implicitly disable streaming
*/
- if(ioctl(vdo->fd, VIDIOC_REQBUFS, &rb) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_REQBUFS, &rb) < 0)
err_capture(vdo, SEV_WARNING, ZBAR_ERR_SYSTEM, __func__,
"releasing video frame buffers (VIDIOC_REQBUFS)");
- /* close open device */
+ /* v4l2_close v4l2_open device */
if(vdo->fd >= 0) {- close(vdo->fd);
+ v4l2_close(vdo->fd);
vdo->fd = -1;
}
return(0);
}
-static int v4l2_mmap_buffers (zbar_video_t *vdo)
+static int v4l2_v4l2_mmap_buffers (zbar_video_t *vdo)
{struct v4l2_requestbuffers rb;
memset(&rb, 0, sizeof(rb));
rb.count = vdo->num_images;
rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
rb.memory = V4L2_MEMORY_MMAP;
- if(ioctl(vdo->fd, VIDIOC_REQBUFS, &rb) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_REQBUFS, &rb) < 0)
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"requesting video frame buffers (VIDIOC_REQBUFS)"));
zprintf(1, "mapping %u buffers (of %d requested)\n",
@@ -216,7 +218,7 @@ static int v4l2_mmap_buffers (zbar_video_t *vdo)
int i;
for(i = 0; i < vdo->num_images; i++) {vbuf.index = i;
- if(ioctl(vdo->fd, VIDIOC_QUERYBUF, &vbuf) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_QUERYBUF, &vbuf) < 0)
/* FIXME cleanup */
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"querying video buffer (VIDIOC_QUERYBUF)"));
@@ -229,7 +231,7 @@ static int v4l2_mmap_buffers (zbar_video_t *vdo)
zbar_image_t *img = vdo->images[i];
img->datalen = vbuf.length;
- img->data = mmap(NULL, vbuf.length, PROT_READ | PROT_WRITE, MAP_SHARED,
+ img->data = v4l2_mmap(NULL, vbuf.length, PROT_READ | PROT_WRITE, MAP_SHARED,
vdo->fd, vbuf.m.offset);
if(img->data == MAP_FAILED)
/* FIXME cleanup */
@@ -253,7 +255,7 @@ static int v4l2_set_format (zbar_video_t *vdo,
vpix->pixelformat = fmt;
vpix->field = V4L2_FIELD_NONE;
int rc = 0;
- if((rc = ioctl(vdo->fd, VIDIOC_S_FMT, &vfmt)) < 0) {+ if((rc = v4l2_ioctl(vdo->fd, VIDIOC_S_FMT, &vfmt)) < 0) {/* several broken drivers return an error if we request
* no interlacing (NB v4l2 spec violation)
* ...try again with an interlaced request
@@ -264,7 +266,7 @@ static int v4l2_set_format (zbar_video_t *vdo,
/* FIXME this might be _ANY once we can de-interlace */
vpix->field = V4L2_FIELD_INTERLACED;
- if(ioctl(vdo->fd, VIDIOC_S_FMT, &vfmt) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_S_FMT, &vfmt) < 0)
return(err_capture_int(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"setting format %x (VIDIOC_S_FMT)", fmt));
@@ -276,7 +278,7 @@ static int v4l2_set_format (zbar_video_t *vdo,
struct v4l2_pix_format *newpix = &newfmt.fmt.pix;
memset(&newfmt, 0, sizeof(newfmt));
newfmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- if(ioctl(vdo->fd, VIDIOC_G_FMT, &newfmt) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_G_FMT, &newfmt) < 0)
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"querying format (VIDIOC_G_FMT)"));
@@ -307,7 +309,7 @@ static int v4l2_init (zbar_video_t *vdo,
if(v4l2_set_format(vdo, fmt))
return(-1);
if(vdo->iomode == VIDEO_MMAP)
- return(v4l2_mmap_buffers(vdo));
+ return(v4l2_v4l2_mmap_buffers(vdo));
return(0);
}
@@ -322,7 +324,7 @@ static int v4l2_probe_iomode (zbar_video_t *vdo)
else
rb.memory = V4L2_MEMORY_USERPTR;
- if(ioctl(vdo->fd, VIDIOC_REQBUFS, &rb) < 0) {+ if(v4l2_ioctl(vdo->fd, VIDIOC_REQBUFS, &rb) < 0) {if(vdo->iomode)
return(err_capture_int(vdo, SEV_ERROR, ZBAR_ERR_INVALID, __func__,
"unsupported iomode requested (%d)",
@@ -350,7 +352,7 @@ static inline int v4l2_probe_formats (zbar_video_t *vdo)
memset(&desc, 0, sizeof(desc));
desc.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
for(desc.index = 0; desc.index < V4L2_FORMATS_MAX; desc.index++) {- if(ioctl(vdo->fd, VIDIOC_ENUM_FMT, &desc) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_ENUM_FMT, &desc) < 0)
break;
zprintf(2, " [%d] %.4s : %s%s\n",
desc.index, (char*)&desc.pixelformat, desc.description,
@@ -368,7 +370,7 @@ static inline int v4l2_probe_formats (zbar_video_t *vdo)
struct v4l2_pix_format *pix = &fmt.fmt.pix;
memset(&fmt, 0, sizeof(fmt));
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- if(ioctl(vdo->fd, VIDIOC_G_FMT, &fmt) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_G_FMT, &fmt) < 0)
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"querying current video format (VIDIO_G_FMT)"));
@@ -390,15 +392,15 @@ static inline int v4l2_probe_formats (zbar_video_t *vdo)
maxpix->height = vdo->height;
zprintf(1, "setting requested size: %d x %d\n", vdo->width, vdo->height);
- if(ioctl(vdo->fd, VIDIOC_S_FMT, &maxfmt) < 0) {+ if(v4l2_ioctl(vdo->fd, VIDIOC_S_FMT, &maxfmt) < 0) {zprintf(1, "set FAILED...trying to recover original format\n");
/* ignore errors (driver broken anyway) */
- ioctl(vdo->fd, VIDIOC_S_FMT, &fmt);
+ v4l2_ioctl(vdo->fd, VIDIOC_S_FMT, &fmt);
}
memset(&fmt, 0, sizeof(fmt));
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- if(ioctl(vdo->fd, VIDIOC_G_FMT, &fmt) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_G_FMT, &fmt) < 0)
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"querying current video format (VIDIOC_G_FMT)"));
@@ -420,7 +422,7 @@ static inline int v4l2_reset_crop (zbar_video_t *vdo)
struct v4l2_cropcap ccap;
memset(&ccap, 0, sizeof(ccap));
ccap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- if(ioctl(vdo->fd, VIDIOC_CROPCAP, &ccap) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_CROPCAP, &ccap) < 0)
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"querying crop support (VIDIOC_CROPCAP)"));
@@ -442,7 +444,7 @@ static inline int v4l2_reset_crop (zbar_video_t *vdo)
memset(&crop, 0, sizeof(crop));
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
crop.c = ccap.defrect;
- if(ioctl(vdo->fd, VIDIOC_S_CROP, &crop) < 0 && errno != EINVAL)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_S_CROP, &crop) < 0 && errno != EINVAL)
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
"setting default crop window (VIDIOC_S_CROP)"));
return(0);
@@ -453,7 +455,7 @@ int _zbar_v4l2_probe (zbar_video_t *vdo)
/* check capabilities */
struct v4l2_capability vcap;
memset(&vcap, 0, sizeof(vcap));
- if(ioctl(vdo->fd, VIDIOC_QUERYCAP, &vcap) < 0)
+ if(v4l2_ioctl(vdo->fd, VIDIOC_QUERYCAP, &vcap) < 0)
return(err_capture(vdo, SEV_WARNING, ZBAR_ERR_UNSUPPORTED, __func__,
"video4linux version 2 not supported (VIDIOC_QUERYCAP)"));
@@ -507,3 +509,21 @@ int _zbar_v4l2_probe (zbar_video_t *vdo)
vdo->dq = v4l2_dq;
return(0);
}
+
+int _zbar_video_open (zbar_video_t *vdo,
+ const char *dev)
+{+ vdo->fd = v4l2_open(dev, O_RDWR);
+ if(vdo->fd < 0)
+ return(err_capture_str(vdo, SEV_ERROR, ZBAR_ERR_SYSTEM, __func__,
+ "opening video device '%s'", dev));
+ zprintf(1, "opened camera device %s (fd=%d)\n", dev, vdo->fd);
+
+ int rc = _zbar_v4l2_probe(vdo);
+
+ if(rc && vdo->fd >= 0) {+ v4l2_close(vdo->fd);
+ vdo->fd = -1;
+ }
+ return(rc);
+}
diff --git a/zbarcam/Makefile.am.inc b/zbarcam/Makefile.am.inc
index ea869bc..78ce9b7 100644
--- a/zbarcam/Makefile.am.inc
+++ b/zbarcam/Makefile.am.inc
@@ -7,4 +7,6 @@ CLEANFILES += zbarcam/.libs/zbarcam
if WIN32
zbarcam_zbarcam_SOURCES += zbarcam/zbarcam.rc
zbarcam_zbarcam_LDADD += zbarcam/zbarcam-rc.o
+else
+zbarcam_zbarcam_LDADD += -lv4l2
endif
--