Move ztv driver to it's own directory

The convention is to have the video driver (geode) in the src subdir
and any other targets (utils, apps, other drivers) in their own
directory. It makes it much simpler to right a correct makefile
and to set conditional compile.

This highlighted a few things to fix. For now, the directory includes
have not been copied as they are required. The AM_CCASFLAGS is not required
either as there is no assembler.

Other than that, the gcc command issued has no differences. Other unrequired
defines could be removed later.

Signed-off-by: Gaetan Nadon <memsize@videotron.ca>

2 files changed, 0 insertions, 1769 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 6817ea4..85c2115 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -144,11 +144,3 @@ EXTRA_DIST = \
   \
         gx_vga.c \
         lx_vga.c
-
-ztv_drv_la_LTLIBRARIES = ztv_drv.la
-ztv_drv_la_LDFLAGS = -module -avoid-version
-ztv_drv_ladir = @moduledir@/drivers
-
-ztv_drv_la_SOURCES = \
-        z4l.c
-
diff --git a/src/z4l.c b/src/z4l.c
deleted file mode 100644
index d44ff73..0000000
--- a/src/z4l.c
+++ /dev/null
@@ -1,1761 +0,0 @@
-/*
- * Copyright (c) 2006 Advanced Micro Devices, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Neither the name of the Advanced Micro Devices, Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from this
- * software without specific prior written permission.
- */
-
-/* prototype Xv interface for lxv4l2 driver */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <sys/time.h>
-#include <sys/fcntl.h>
-#include <sys/mman.h>
-#include <sys/ioctl.h>
-#include <errno.h>
-#include <unistd.h>
-#include <string.h>
-#include <ctype.h>
-#include <stdlib.h>
-
-#include "xf86.h"
-#include <X11/extensions/Xv.h>
-#include "xf86_OSproc.h"
-#include "compiler.h"
-#include "xf86xv.h"
-#include "fourcc.h"
-
-#include <linux/types.h>
-
-#define __s64 __s_64
-typedef long long __s64;
-
-#define __u64 __u_64
-typedef unsigned long long __u64;
-
-#define __user
-#include "linux/videodev2.h"
-
-typedef signed long long s64;
-typedef unsigned long long u64;
-
-int debuglvl = 0;
-
-#define NONBLK_IO
-#undef HAVE_SELECT
-
-#define DEBUG 1
-#ifdef DEBUG
-#define DBLOG(n,s...) do { \
-						if ( debuglvl >= (n) ) \
-							xf86Msg(X_INFO, "z4l: " s); \
-					  } while(0)
-#else
-#define DBLOG(n,s...) do {} while(0)
-#endif
-
-#define DEFAULT_COLORKEY 0x010203
-#define DEFAULT_KEYMODE 0
-
-#define MAX_BUFFERS 4
-#define MAX_OVLY_WIDTH  2048
-#define MAX_OVLY_HEIGHT 2048
-
-static char *z4l_dev_paths[] = {
-    "/dev/videox", NULL
-};
-
-#define ATTR_ENCODING "encoding"
-#define ATTR_ENCODING_ID -1
-#define ATTR_KEYMODE "keymode"
-#define ATTR_KEYMODE_ID -2
-#define ATTR_COLORKEY "colorkey"
-#define ATTR_COLORKEY_ID -3
-#define ATTR_MAX_ID 3
-
-#ifdef XvExtension
-
-static XF86VideoFormatRec Formats[] = {
-    {8, PseudoColor},
-    {15, TrueColor},
-    {16, TrueColor},
-    {24, TrueColor}
-};
-
-#define NUM_FORMATS (sizeof(Formats)/sizeof(Formats[0]))
-
-#define FOURCC_Y800 0x30303859
-#define XVIMAGE_Y800 \
-   { \
-        FOURCC_Y800, \
-        XvYUV, \
-        LSBFirst, \
-        {'Y','8','0','0', \
-          0x00,0x00,0x00,0x10,0x80,0x00,0x00,0xAA,0x00,0x38,0x9B,0x71}, \
-        8, \
-        XvPacked, \
-        1, \
-        0, 0, 0, 0, \
-        8, 0, 0, \
-        1, 0, 0, \
-        1, 0, 0, \
-        {'Y','8','0','0', \
-          0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}, \
-        XvTopToBottom \
-   }
-
-static XF86ImageRec pixfmts[] = {
-    XVIMAGE_UYVY, XVIMAGE_YUY2,
-    XVIMAGE_I420, XVIMAGE_YV12,
-    XVIMAGE_Y800,
-};
-
-#define NUM_PIXFMTS (sizeof(pixfmts)/sizeof(pixfmts[0]))
-
-typedef struct s_std_data
-{
-    int inp;
-    v4l2_std_id std;
-    unsigned int fmt;
-} t_std_data;
-
-typedef struct s_ovly_bfrs
-{
-    void *start;
-    unsigned long offset;
-    size_t length;
-} t_ovly_bfrs;
-
-typedef struct
-{
-    int fd;
-    int run;
-    int dir;
-    int nbfrs;
-    int bufno;
-    int bufsz;
-    int last;
-    int width, height;
-    int keymode, colorkey;
-    int src_is_set, src_x, src_y, src_w, src_h;
-    int drw_is_set, drw_x, drw_y, drw_w, drw_h;
-    unsigned int pixfmt;
-    char dev_path[32];
-    t_ovly_bfrs bfrs[MAX_BUFFERS];
-    XF86VideoAdaptorPtr adpt;
-    XF86VideoEncodingPtr enc;
-    RegionRec clips;
-    int attrIds[1];
-} Z4lPortPrivRec;
-
-static int z4l_x_offset = 0;
-static int z4l_y_offset = 0;
-static int Z4l_nAdaptors = 0;
-static XF86VideoAdaptorPtr *Z4l_pAdaptors = NULL;
-
-static int
-IoCtl(int fd, unsigned int fn, void *arg, int flag)
-{
-    int ret;
-
-    errno = 0;
-    ret = ioctl(fd, fn, arg);
-    if (ret != 0 && flag != 0)
-	DBLOG(0, "ioctl(%08x)=%d\n", fn, ret);
-    return ret;
-}
-
-static void
-z4l_ovly_unmap(Z4lPortPrivRec * pPriv)
-{
-#ifdef LINUX_2_6
-    int i, nbfrs;
-
-    nbfrs = pPriv->nbfrs;
-    for (i = 0; i < nbfrs; ++i) {
-	if (pPriv->bfrs[i].start != NULL) {
-	    munmap(pPriv->bfrs[i].start, pPriv->bfrs[i].length);
-	    pPriv->bfrs[i].start = NULL;
-	}
-    }
-#else
-    if (pPriv->bfrs[0].start != NULL) {
-	munmap((void *)pPriv->bfrs[0].start, pPriv->bufsz);
-	pPriv->bfrs[0].start = NULL;
-    }
-#endif
-    pPriv->nbfrs = -1;
-    pPriv->bufsz = -1;
-    pPriv->last = -1;
-}
-
-static void
-z4l_ovly_map(Z4lPortPrivRec * pPriv, int dir)
-{
-    long offset, bsz;
-    int i, fd;
-    struct v4l2_buffer bfr;
-    struct v4l2_requestbuffers req;
-    int type = dir >= 0 ?
-	V4L2_BUF_TYPE_VIDEO_CAPTURE : V4L2_BUF_TYPE_VIDEO_OVERLAY;
-    if (pPriv->run > 0) {
-	DBLOG(1, "busy\n");
-	return;
-    }
-    fd = pPriv->fd;
-    memset(&req, 0, sizeof(req));
-    req.type = type;
-    req.memory = V4L2_MEMORY_MMAP;
-    req.count = MAX_BUFFERS;
-    if (ioctl(fd, VIDIOC_REQBUFS, &req) < 0)
-	goto xit;
-    pPriv->nbfrs = req.count;
-    if (pPriv->nbfrs <= 0) {
-	DBLOG(1, "no vidmem\n");
-	return;
-    }
-    memset(&pPriv->bfrs, 0, sizeof(pPriv->bfrs));
-
-    for (i = 0; i < pPriv->nbfrs; ++i) {
-	memset(&bfr, 0, sizeof(bfr));
-	bfr.type = type;
-	bfr.index = i;
-	if (ioctl(fd, VIDIOC_QUERYBUF, &bfr) < 0)
-	    goto xit;
-	offset = bfr.m.offset;
-	pPriv->bfrs[i].offset = offset;
-	pPriv->bfrs[i].length = bfr.length;
-	bsz = offset + bfr.length;
-	if (pPriv->bufsz < bsz)
-	    pPriv->bufsz = bsz;
-    }
-
-#ifdef LINUX_2_6
-    for (i = 0; i < pPriv->nbfrs; ++i) {
-	pPriv->bfrs[i].start = mmap(NULL, bfr.length, PROT_READ | PROT_WRITE,
-	    MAP_SHARED, fd, pPriv->bfrs[i].offset);
-	if (pPriv->bfrs[i].start == MAP_FAILED)
-	    goto xit;
-    }
-#else
-    pPriv->bfrs[0].offset = 0;
-    pPriv->bfrs[0].start =
-	mmap(NULL, pPriv->bufsz, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
-
-    if (pPriv->bfrs[0].start == MAP_FAILED) {
-	pPriv->bfrs[0].start = NULL;
-	goto xit;
-    }
-
-    offset = (unsigned long)pPriv->bfrs[0].start;
-    for (i = 1; i < pPriv->nbfrs; ++i)
-	pPriv->bfrs[i].start = (void *)(offset + pPriv->bfrs[i].offset);
-#endif
-
-    for (i = 0; i < pPriv->nbfrs; ++i) {
-	DBLOG(3, "bfr %d ofs %#lx adr %p sz %lu\n", i, pPriv->bfrs[i].offset,
-	    pPriv->bfrs[i].start, (unsigned long)pPriv->bfrs[i].length);
-	memset(pPriv->bfrs[i].start, 0x80, pPriv->bfrs[i].length);
-    }
-
-    pPriv->last = 0;
-    while (pPriv->last < pPriv->nbfrs - 1) {
-	bfr.index = pPriv->last++;
-	bfr.type = type;
-	if (ioctl(fd, VIDIOC_QBUF, &bfr) < 0)
-	    goto xit;
-    }
-    return;
-
-  xit:
-    z4l_ovly_unmap(pPriv);
-}
-
-static int
-z4l_ovly_dqbuf(Z4lPortPrivRec * pPriv)
-{
-    int stat;
-    struct v4l2_buffer bfr;
-    int fd = pPriv->fd;
-
-#ifdef HAVE_SELECT
-    struct timeval tmo;
-    fd_set dqset;
-
-    FD_ZERO(&dqset);
-    FD_SET(pPriv->fd, &dqset);
-    tmo.tv_sec = 0;
-    tmo.tv_usec = 0;
-    if (select(fd + 1, &dqset, NULL, NULL, &tmo) <= 0)
-	return -1;
-#endif
-    memset(&bfr, 0, sizeof(bfr));
-    bfr.type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
-    stat = ioctl(fd, VIDIOC_DQBUF, &bfr);
-    DBLOG(3, "dqbuf %d,%d,%d,%d\n", stat, bfr.index, pPriv->last, errno);
-
-    return stat == 0 ? bfr.index : -1;
-}
-
-static int
-z4l_open_device(Z4lPortPrivRec * pPriv)
-{
-    int enable;
-
-    if (pPriv->fd < 0) {
-	pPriv->fd = open(&pPriv->dev_path[0], O_RDWR, 0);
-	DBLOG(1, "open(%s)=%d\n", &pPriv->dev_path[0], pPriv->fd);
-	enable = 1;
-#ifdef NONBLK_IO
-	if (IoCtl(pPriv->fd, FIONBIO, &enable, 1) != 0) {
-	    DBLOG(1, "open cant enable nonblocking\n");
-	    close(pPriv->fd);
-	    pPriv->fd = -1;
-	}
-#endif
-    }
-    return pPriv->fd;
-}
-
-static int
-z4l_close_device(Z4lPortPrivRec * pPriv)
-{
-    int ret = 0;
-
-    if (pPriv->fd >= 0) {
-	ret = close(pPriv->fd);
-	pPriv->fd = -1;
-	DBLOG(1, "close()=%d\n", ret);
-    }
-    if (pPriv->run > 0) {
-	z4l_ovly_unmap(pPriv);
-	pPriv->run = -1;
-    }
-
-    return ret;
-}
-
-static int
-z4l_ovly_reset(Z4lPortPrivRec * pPriv)
-{
-    int ret = 0;
-
-    if (pPriv->run > 0) {
-	z4l_close_device(pPriv);
-	ret = z4l_open_device(pPriv);
-    }
-
-    return ret;
-}
-
-static unsigned int
-z4l_fourcc_pixfmt(int fourcc)
-{
-    unsigned int pixfmt = -1;
-
-    switch (fourcc) {
-    case FOURCC_UYVY:
-	pixfmt = V4L2_PIX_FMT_UYVY;
-	break;
-    case FOURCC_YV12:
-	pixfmt = V4L2_PIX_FMT_YVU420;
-	break;
-    case FOURCC_Y800:
-    case FOURCC_I420:
-	pixfmt = V4L2_PIX_FMT_YUV420;
-	break;
-    case FOURCC_YUY2:
-	pixfmt = V4L2_PIX_FMT_YUYV;
-	break;
-    }
-
-    return pixfmt;
-}
-static void
-z4l_ovly_pixfmt(Z4lPortPrivRec * pPriv, unsigned int pixfmt)
-{
-    struct v4l2_framebuffer fbuf;
-
-    DBLOG(1, "pixfmt %4.4s %4.4s\n", (char *)&pPriv->pixfmt, (char *)&pixfmt);
-    memset(&fbuf, 0, sizeof(fbuf));
-    IoCtl(pPriv->fd, VIDIOC_G_FBUF, &fbuf, 1);
-    fbuf.fmt.pixelformat = pixfmt;
-    fbuf.base = NULL;
-    IoCtl(pPriv->fd, VIDIOC_S_FBUF, &fbuf, 1);
-    pPriv->pixfmt = pixfmt;
-}
-
-static void
-z4l_ovly_bfr(Z4lPortPrivRec * pPriv, int width, int height)
-{
-    struct v4l2_format fmt;
-
-    DBLOG(1, "sfmt ovly %dx%d\n", width, height);
-    memset(&fmt, 0, sizeof(fmt));
-    fmt.type = 0x102;
-    IoCtl(pPriv->fd, VIDIOC_G_FMT, &fmt, 1);
-    fmt.fmt.win.field = V4L2_FIELD_NONE;
-    fmt.fmt.win.w.width = pPriv->width = width;
-    fmt.fmt.win.w.height = pPriv->height = height;
-    IoCtl(pPriv->fd, VIDIOC_S_FMT, &fmt, 1);
-}
-
-static void
-z4l_ovly_rect(Z4lPortPrivRec * pPriv,
-    int src_x, int src_y, int src_w, int src_h,
-    int drw_x, int drw_y, int drw_w, int drw_h)
-{
-    int x, dx, w, y, dy, h;
-    struct v4l2_format fmt;
-
-    pPriv->src_x = src_x;
-    pPriv->src_y = src_y;
-    pPriv->src_w = src_w;
-    pPriv->src_h = src_h;
-    pPriv->drw_x = drw_x;
-    pPriv->drw_y = drw_y;
-    pPriv->drw_w = drw_w;
-    pPriv->drw_h = drw_h;
-
-    if ((drw_x -= z4l_x_offset) < 0) {
-	if ((w = pPriv->drw_w) <= 0)
-	    w = 1;
-	x = -drw_x;
-	dx = x * pPriv->src_w / w;
-	src_x = pPriv->src_x + dx;
-	src_w = pPriv->src_w - dx;
-	drw_w = pPriv->drw_w - x;
-	drw_x = 0;
-    }
-
-    if ((drw_y -= z4l_y_offset) < 0) {
-	if ((h = pPriv->drw_h) <= 0)
-	    h = 1;
-	y = -drw_y;
-	dy = y * pPriv->src_h / h;
-	src_y = pPriv->src_y + dy;
-	src_h = pPriv->src_h - dy;
-	drw_h = pPriv->drw_h - y;
-	drw_y = 0;
-    }
-
-    memset(&fmt, 0, sizeof(fmt));
-    fmt.type = 0x100;
-    IoCtl(pPriv->fd, VIDIOC_G_FMT, &fmt, 1);
-    if (pPriv->src_is_set != 0) {
-	if (src_x != fmt.fmt.win.w.left || src_y != fmt.fmt.win.w.top ||
-	    src_w != fmt.fmt.win.w.width || src_h != fmt.fmt.win.w.height)
-	    pPriv->src_is_set = 0;
-    }
-    if (pPriv->src_is_set == 0) {
-	pPriv->src_is_set = 1;
-	fmt.fmt.win.w.left = src_x;
-	fmt.fmt.win.w.top = src_y;
-	fmt.fmt.win.w.width = src_w;
-	fmt.fmt.win.w.height = src_h;
-	IoCtl(pPriv->fd, VIDIOC_S_FMT, &fmt, 1);
-	DBLOG(3, "  set src %d,%d %dx%d\n", src_x, src_y, src_w, src_h);
-    }
-    memset(&fmt, 0, sizeof(fmt));
-    fmt.type = 0x101;
-    IoCtl(pPriv->fd, VIDIOC_G_FMT, &fmt, 1);
-    if (pPriv->drw_is_set != 0) {
-	if (drw_x != fmt.fmt.win.w.left || drw_y != fmt.fmt.win.w.top ||
-	    drw_w != fmt.fmt.win.w.width || drw_h != fmt.fmt.win.w.height)
-	    pPriv->drw_is_set = 0;
-    }
-    if (pPriv->drw_is_set == 0) {
-	pPriv->drw_is_set = 1;
-	fmt.fmt.win.w.left = drw_x;
-	fmt.fmt.win.w.top = drw_y;
-	fmt.fmt.win.w.width = drw_w;
-	fmt.fmt.win.w.height = drw_h;
-	IoCtl(pPriv->fd, VIDIOC_S_FMT, &fmt, 1);
-	DBLOG(3, "  set drw %d,%d %dx%d\n", drw_x, drw_y, drw_w, drw_h);
-    }
-}
-
-static void
-z4l_ovly_pitch(unsigned int pixfmt, int w, int h, int *py_pitch,
-    int *puv_pitch, int *poffset1, int *poffset2, int *psize)
-{
-    int y_pitch, uv_pitch;
-    int offset1, offset2;
-    int size, is_420;
-
-    switch (pixfmt) {
-    case V4L2_PIX_FMT_YVU420:
-    case V4L2_PIX_FMT_YUV420:
-	is_420 = 1;
-	y_pitch = ((w + 1) / 2) * 2;
-	uv_pitch = (w + 1) / 2;
-	break;
-    default:
-	is_420 = 0;
-	y_pitch = ((w + 1) / 2) * 4;
-	uv_pitch = 0;
-	break;
-    }
-
-    offset1 = y_pitch * h;
-    offset2 = uv_pitch * h;
-
-    if (is_420 != 0)
-	offset2 /= 2;
-
-    size = offset1 + 2 * offset2;
-    *py_pitch = y_pitch;
-    *puv_pitch = uv_pitch;
-    *poffset1 = offset1;
-    *poffset2 = offset2;
-    *psize = size;
-}
-
-static int
-z4l_ovly_set_colorkey(Z4lPortPrivRec * pPriv, int key)
-{
-    struct v4l2_format fmt;
-
-    memset(&fmt, 0, sizeof(fmt));
-    fmt.type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
-    if (IoCtl(pPriv->fd, VIDIOC_G_FMT, &fmt, 1) < 0)
-	return 0;
-    fmt.fmt.win.chromakey = key;
-    if (IoCtl(pPriv->fd, VIDIOC_S_FMT, &fmt, 1) < 0)
-	return 0;
-    pPriv->colorkey = key;
-
-    return 1;
-}
-
-static int
-z4l_ovly_get_colorkey(Z4lPortPrivRec * pPriv, int *key)
-{
-    struct v4l2_format fmt;
-
-    memset(&fmt, 0, sizeof(fmt));
-    fmt.type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
-    if (IoCtl(pPriv->fd, VIDIOC_G_FMT, &fmt, 1) < 0)
-	return 0;
-    *key = fmt.fmt.win.chromakey;
-
-    return 1;
-}
-
-static int
-z4l_ovly_set_keymode(Z4lPortPrivRec * pPriv, int enable)
-{
-    struct v4l2_framebuffer fbuf;
-
-    memset(&fbuf, 0, sizeof(fbuf));
-    if (IoCtl(pPriv->fd, VIDIOC_G_FBUF, &fbuf, 1) < 0)
-	return 0;
-
-    if (enable != 0)
-	fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
-    else
-	fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
-
-    fbuf.base = NULL;
-    if (IoCtl(pPriv->fd, VIDIOC_S_FBUF, &fbuf, 1) < 0)
-	return 0;
-    pPriv->keymode = enable;
-
-    return 1;
-}
-
-static int
-z4l_ovly_get_keymode(Z4lPortPrivRec * pPriv, int *enable)
-{
-    struct v4l2_framebuffer fbuf;
-
-    memset(&fbuf, 0, sizeof(fbuf));
-    if (IoCtl(pPriv->fd, VIDIOC_G_FBUF, &fbuf, 1) < 0)
-	return 0;
-    *enable = (fbuf.flags & V4L2_FBUF_FLAG_CHROMAKEY) != 0 ? 1 : 0;
-
-    return 1;
-}
-
-static int
-z4l_ovly_set_encoding(Z4lPortPrivRec * pPriv, int id)
-{
-    int l, n, inp;
-    char *cp;
-    t_std_data *sp;
-    XF86VideoEncodingPtr enc;
-    XF86VideoAdaptorPtr adpt;
-    v4l2_std_id std;
-    struct v4l2_format fmt;
-    struct v4l2_framebuffer fbuf;
-
-    adpt = pPriv->adpt;
-    DBLOG(1, "z4l_ovly_set_encoding(%d)\n", id);
-    if (id < 0 || id >= adpt->nEncodings)
-	return 0;
-    enc = &adpt->pEncodings[id];
-    cp = &enc->name[0];
-    n = sizeof(int) - 1;
-    l = strlen(cp) + 1;
-    l = (l + n) & ~n;
-    sp = (t_std_data *) (cp + l);
-    inp = sp->inp;
-
-    DBLOG(1, " nm %s fmt %4.4s inp %d std %llx\n",
-	cp, (char *)&sp->fmt, sp->inp, sp->std);
-
-    if (IoCtl(pPriv->fd, VIDIOC_S_INPUT, &inp, 1) < 0)
-	return 0;
-
-    std = sp->std;
-    if (IoCtl(pPriv->fd, VIDIOC_S_STD, &std, 1) < 0)
-	return 0;
-
-    memset(&fmt, 0, sizeof(fmt));
-    fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-    if (IoCtl(pPriv->fd, VIDIOC_G_FMT, &fmt, 1) < 0)
-	return 0;
-
-    fmt.fmt.pix.pixelformat = sp->fmt;
-    if (IoCtl(pPriv->fd, VIDIOC_S_FMT, &fmt, 1) < 0)
-	return 0;
-    memset(&fbuf, 0, sizeof(fbuf));
-
-    if (IoCtl(pPriv->fd, VIDIOC_G_FBUF, &fbuf, 1) < 0)
-	return 0;
-
-    fbuf.fmt.pixelformat = sp->fmt;
-    fbuf.base = NULL;
-    if (IoCtl(pPriv->fd, VIDIOC_S_FBUF, &fbuf, 1) < 0)
-	return 0;
-    pPriv->pixfmt = sp->fmt;
-    pPriv->enc = enc;
-    pPriv->src_is_set = pPriv->drw_is_set = 0;
-
-    return 1;
-}
-
-static int
-z4l_ovly_get_encoding(Z4lPortPrivRec * pPriv, int *id)
-{
-    XF86VideoEncodingPtr enc = pPriv->enc;
-
-    *id = enc->id;
-    return 1;
-}
-
-static void
-z4l_ovly_stop(Z4lPortPrivRec * pPriv)
-{
-    int type, enable, fd;
-
-    if (pPriv->run < 0)
-	return;
-
-    fd = pPriv->fd;
-    if (pPriv->dir > 0) {
-	type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	ioctl(fd, VIDIOC_STREAMOFF, &type);
-    }
-
-    if (pPriv->dir <= 0) {
-	enable = 0;
-	ioctl(fd, VIDIOC_OVERLAY, &enable);
-    }
-
-    if (pPriv->dir != 0)
-	z4l_ovly_unmap(pPriv);
-
-    pPriv->run = -1;
-    z4l_close_device(pPriv);
-}
-
-static void
-z4l_ovly_start(Z4lPortPrivRec * pPriv, int dir)
-{
-    int enable;
-
-    if (pPriv->run >= 0)
-	return;
-
-    if ((pPriv->dir = dir) != 0)
-	z4l_ovly_map(pPriv, dir);
-
-    enable = 1;
-
-    if (IoCtl(pPriv->fd, VIDIOC_OVERLAY, &enable, 1) != 0) {
-	z4l_ovly_stop(pPriv);
-	return;
-    }
-
-    pPriv->run = 1;
-}
-
-static int
-z4l_region_equal(RegionPtr ap, RegionPtr bp)
-{
-    int nboxes;
-    BoxPtr abox, bbox;
-
-    if (ap == NULL && bp == NULL)
-	return 1;
-    if (ap == NULL || bp == NULL)
-	return 0;
-
-    if ((nboxes = REGION_NUM_RECTS(ap)) != REGION_NUM_RECTS(bp) ||
-	ap->extents.x1 != bp->extents.x1 ||
-	ap->extents.x2 != bp->extents.x2
-	|| ap->extents.y1 != bp->extents.y1
-	|| ap->extents.y2 != bp->extents.y2)
-	return 0;
-
-    abox = REGION_RECTS(ap);
-    bbox = REGION_RECTS(bp);
-
-    while (--nboxes >= 0) {
-	if (abox->x1 != bbox->x1 || abox->y1 != bbox->y1 ||
-	    abox->x2 != bbox->x2 || abox->y2 != bbox->y2)
-	    return 0;
-	++abox;
-	++bbox;
-    }
-
-    return 1;
-}
-
-static void
-z4l_setup_colorkey(Z4lPortPrivRec * pPriv, ScreenPtr pScrn,
-    RegionPtr clipBoxes)
-{
-    if (pPriv->run > 0 && pPriv->dir <= 0 && pPriv->keymode != 0 &&
-	z4l_region_equal(&pPriv->clips, clipBoxes) == 0) {
-	xf86XVFillKeyHelper(pScrn, pPriv->colorkey, clipBoxes);
-	REGION_COPY(pScrn, &pPriv->clips, clipBoxes);
-    }
-}
-
-static void
-Z4lStopVideo(ScrnInfoPtr pScrni, pointer data, Bool exit)
-{
-    Z4lPortPrivRec *pPriv = (Z4lPortPrivRec *) data;
-
-    DBLOG(1, "Z4lStopVideo()\n");
-
-    if (exit != 0)
-	z4l_ovly_stop(pPriv);
-    else
-	pPriv->src_is_set = pPriv->drw_is_set = 0;
-
-    REGION_EMPTY(pScrni->pScreen, &pPriv->clips);
-}
-
-static void
-Z4lQueryBestSize(ScrnInfoPtr pScrni, Bool motion,
-    short vid_w, short vid_h, short drw_w, short drw_h,
-    unsigned int *p_w, unsigned int *p_h, pointer data)
-{
-    if (drw_w > MAX_OVLY_WIDTH)
-	drw_w = MAX_OVLY_WIDTH;
-    if (drw_h > MAX_OVLY_HEIGHT)
-	drw_h = MAX_OVLY_HEIGHT;
-
-    *p_w = drw_w;
-    *p_h = drw_h;
-    DBLOG(1, "Z4lQueryBestSize(%d, src %dx%d dst %dx%d)\n", motion, vid_w,
-	vid_h, drw_w, drw_h);
-}
-
-static int
-Z4lPutImage(ScrnInfoPtr pScrni, short src_x, short src_y, short drw_x,
-    short drw_y, short src_w, short src_h, short drw_w, short drw_h,
-    int id, unsigned char *buf, short width, short height,
-    Bool sync, RegionPtr clipBoxes, pointer data, DrawablePtr pDraw)
-{
-    int fd, size;
-    int y_pitch, uv_pitch, offset1, offset2;
-    unsigned char *src, *dst;
-    unsigned int pixfmt;
-    struct v4l2_buffer bfr;
-    Z4lPortPrivRec *pPriv = (Z4lPortPrivRec *) data;
-
-    if (pPriv->run > 0 && pPriv->dir >= 0)
-	return BadMatch;
-    if (pPriv->fd < 0) {
-	z4l_open_device(pPriv);
-	if (pPriv->fd < 0)
-	    return BadValue;
-    }
-
-    fd = pPriv->fd;
-    if (pPriv->run < 0) {
-	DBLOG(2, "PutImg id %#x src %d,%d %dx%d drw %d,%d %dx%d bfr %p "
-	    "%dx%d data %p\n", id, src_x, src_y, src_w, src_h, drw_x,
-	    drw_y, drw_w, drw_h, buf, width, height, data);
-	pPriv->pixfmt = pPriv->height = -1;
-	pPriv->src_is_set = pPriv->drw_is_set = 0;
-    }
-
-    pixfmt = z4l_fourcc_pixfmt(id);
-    if (pixfmt != pPriv->pixfmt) {
-	z4l_ovly_reset(pPriv);
-	z4l_ovly_pixfmt(pPriv, pixfmt);
-    }
-    if (pPriv->width != width || pPriv->height != height) {
-	z4l_ovly_reset(pPriv);
-	z4l_ovly_bfr(pPriv, width, height);
-    }
-
-    if (pPriv->src_is_set == 0 || pPriv->drw_is_set == 0 ||
-	pPriv->src_x != src_x || pPriv->src_y != src_y ||
-	pPriv->src_w != src_w || pPriv->src_h != src_h ||
-	pPriv->drw_x != drw_x || pPriv->drw_y != drw_y ||
-	pPriv->drw_w != drw_w || pPriv->drw_h != drw_h)
-	z4l_ovly_rect(pPriv, src_x, src_y, src_w, src_h, drw_x, drw_y, drw_w,
-	    drw_h);
-
-    if (pPriv->run < 0) {
-	z4l_ovly_start(pPriv, -1);
-	if (pPriv->run < 0)
-	    return BadValue;
-    }
-
-    if (pPriv->last < 0 && (pPriv->last = z4l_ovly_dqbuf(pPriv)) < 0)
-	return BadAlloc;
-
-    z4l_ovly_pitch(pixfmt, width, height, &y_pitch, &uv_pitch,
-	&offset1, &offset2, &size);
-    src = buf;
-    dst = (unsigned char *)pPriv->bfrs[pPriv->last].start;
-    DBLOG(3, "cpy %4.4s src %p dst %p yp %d uvp %d o1 %d o2 %d sz %d\n",
-	(char *)&id, src, dst, y_pitch, uv_pitch, offset1, offset2, size);
-
-    if (id == FOURCC_Y800) {
-	memcpy(dst, src, offset1);
-	src += offset1;
-	dst += offset1;
-	memset(dst, 0x80, 2 * offset2);
-    } else
-	memcpy(dst, src, size);
-
-    memset(&bfr, 0, sizeof(bfr));
-    bfr.type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
-    bfr.index = pPriv->last;
-    bfr.timestamp.tv_sec = 0;
-    bfr.timestamp.tv_usec = 0;
-    bfr.flags |= V4L2_BUF_FLAG_TIMECODE;
-    if (IoCtl(fd, VIDIOC_QBUF, &bfr, 1) != 0)
-	return BadAccess;
-
-    pPriv->last = z4l_ovly_dqbuf(pPriv);
-    z4l_setup_colorkey(pPriv, pScrni->pScreen, clipBoxes);
-
-    return Success;
-}
-
-static int
-Z4lQueryImageAttributes(ScrnInfoPtr pScrni, int id, unsigned short *width,
-    unsigned short *height, int *pitches, int *offsets)
-{
-    int w, h, size;
-    int y_pitch, uv_pitch, offset1, offset2;
-    unsigned int pixfmt = z4l_fourcc_pixfmt(id);
-
-    w = *width;
-    h = *height;
-    if (w > MAX_OVLY_WIDTH)
-	w = MAX_OVLY_WIDTH;
-    if (h > MAX_OVLY_HEIGHT)
-	h = MAX_OVLY_HEIGHT;
-
-    z4l_ovly_pitch(pixfmt, w, h, &y_pitch, &uv_pitch,
-	&offset1, &offset2, &size);
-
-    if (offsets != NULL)
-	offsets[0] = 0;
-    if (pitches != NULL)
-	pitches[0] = y_pitch;
-
-    switch (pixfmt) {
-    case V4L2_PIX_FMT_YVU420:
-    case V4L2_PIX_FMT_YUV420:
-	if (offsets != NULL) {
-	    offsets[1] = offset1;
-	    offsets[2] = offset1 + offset2;
-	}
-	if (pitches != NULL)
-	    pitches[1] = pitches[2] = uv_pitch;
-	h = (h + 1) & ~1;
-	break;
-    }
-
-    w = (w + 1) & ~1;
-    *width = w;
-    *height = h;
-    DBLOG(1, "Z4lQueryImageAttributes(%4.4s) = %d, %dx%d %d/%d %d/%d\n",
-	(char *)&id, size, w, h, y_pitch, uv_pitch, offset1, offset2);
-
-    return size;
-}
-
-static int
-Z4lPutVideo(ScrnInfoPtr pScrni, short src_x, short src_y, short drw_x,
-    short drw_y, short src_w, short src_h, short drw_w, short drw_h,
-    RegionPtr clipBoxes, pointer data, DrawablePtr pDraw)
-{
-    int id;
-    Z4lPortPrivRec *pPriv = (Z4lPortPrivRec *) data;
-
-    DBLOG(2, "PutVid src %d,%d %dx%d drw %d,%d %dx%d data %p\n",
-	src_x, src_y, src_w, src_h, drw_x, drw_y, drw_w, drw_h, data);
-
-    if (z4l_open_device(pPriv) >= 0) {
-	if (pPriv->run < 0) {
-	    DBLOG(2, "PutVid start\n");
-	    z4l_ovly_get_encoding(pPriv, &id);
-	    z4l_ovly_set_encoding(pPriv, id);
-	}
-	DBLOG(2, "PutVid priv %d,%d %dx%d drw %d,%d %dx%d\n",
-	    pPriv->src_x, pPriv->src_y, pPriv->src_w, pPriv->src_h,
-	    pPriv->drw_x, pPriv->drw_y, pPriv->drw_w, pPriv->drw_h);
-	if (pPriv->src_is_set == 0 || pPriv->drw_is_set == 0 ||
-	    pPriv->src_w != src_w || pPriv->src_h != src_h ||
-	    pPriv->drw_x != drw_x || pPriv->drw_y != drw_y ||
-	    pPriv->drw_w != drw_w || pPriv->drw_h != drw_h)
-	    z4l_ovly_rect(pPriv, src_x, src_y, src_w, src_h, drw_x, drw_y,
-		drw_w, drw_h);
-	if (pPriv->run < 0)
-	    z4l_ovly_start(pPriv, 0);
-
-	z4l_setup_colorkey(pPriv, pScrni->pScreen, clipBoxes);
-    }
-
-    return Success;
-}
-
-static XF86VideoEncodingPtr
-Z4lNewEncoding(XF86VideoEncodingPtr * encs, int *nencs)
-{
-    XF86VideoEncodingPtr enc;
-    XF86VideoEncodingPtr tencs =
-	(XF86VideoEncodingPtr) realloc(*encs, sizeof(*tencs) * (*nencs + 1));
-
-    if (tencs == NULL)
-	return NULL;
-
-    *encs = tencs;
-    enc = &tencs[*nencs];
-    ++*nencs;
-    memset(enc, 0, sizeof(*enc));
-
-    return enc;
-}
-
-static void
-Z4lEncodingName(char *ename, int l, char *inp_name, char *std_name, char *fmt)
-{
-    int i, ch;
-
-    while ((ch = *inp_name++) != 0) {
-	if (isalnum(ch) == 0)
-	    continue;
-	if (--l <= 0)
-	    goto xit;
-	*ename++ = ch;
-    }
-
-    if (--l <= 0)
-	goto xit;
-
-    *ename++ = '-';
-
-    while ((ch = *std_name++) != 0) {
-	if (isalnum(ch) == 0)
-	    continue;
-	if (--l <= 0)
-	    goto xit;
-	*ename++ = ch;
-    }
-
-    if (--l <= 0)
-	goto xit;
-
-    *ename++ = '-';
-    i = 4;
-
-    while (--i >= 0 && (ch = *fmt++) != 0) {
-	if (isalnum(ch) == 0)
-	    continue;
-	if (--l <= 0)
-	    goto xit;
-	*ename++ = ch;
-    }
-
-  xit:
-    *ename = 0;
-}
-
-static int
-Z4lAddEncoding(XF86VideoEncodingPtr enc, char *name, int id, int width,
-    int height, int numer, int denom, int inp, v4l2_std_id std,
-    unsigned int fmt)
-{
-    int l, n;
-    t_std_data *sp;
-    char *cp;
-    n = sizeof(int) - 1;
-    l = strlen(&name[0]) + 1;
-    l = (l + n) & ~n;
-    n = l + sizeof(*sp);
-    cp = (char *)malloc(n);
-
-    if (cp == NULL)
-	return 0;
-
-    sp = (t_std_data *) (cp + l);
-    enc->id = id;
-    strcpy(cp, &name[0]);
-    enc->name = cp;
-    enc->width = width;
-    enc->height = height;
-    enc->rate.numerator = numer;
-    enc->rate.denominator = denom;
-    sp->inp = inp;
-    sp->std = std;
-    sp->fmt = fmt;
-    DBLOG(1, "enc %s\n", &name[0]);
-
-    return 1;
-}
-
-static XF86ImagePtr
-Z4lNewImage(XF86ImagePtr * imgs, int *nimgs)
-{
-    XF86ImagePtr img;
-    XF86ImagePtr timgs =
-	(XF86ImagePtr) realloc(*imgs, sizeof(*timgs) * (*nimgs + 1));
-
-    if (timgs == NULL)
-	return NULL;
-
-    *imgs = timgs;
-    img = &timgs[*nimgs];
-    ++*nimgs;
-    memset(img, 0, sizeof(*img));
-
-    return img;
-}
-
-static int
-Z4lAddImage(XF86ImagePtr img, XF86ImagePtr ip)
-{
-    *img = *ip;
-    DBLOG(1, "img %4.4s\n", (char *)&img->id);
-    return 1;
-}
-
-static XF86AttributePtr
-Z4lNewAttribute(XF86AttributePtr * attrs, int *nattrs)
-{
-    XF86AttributePtr attr;
-    XF86AttributePtr tattrs =
-	(XF86AttributePtr) realloc(*attrs, sizeof(*tattrs) * (*nattrs + 1));
-
-    if (tattrs == NULL)
-	return NULL;
-
-    *attrs = tattrs;
-    attr = &tattrs[*nattrs];
-    ++*nattrs;
-    memset(attr, 0, sizeof(*attr));
-
-    return attr;
-}
-
-static void
-Z4lAttributeName(char *bp, int l, char *cp)
-{
-    int ch;
-    char *atomNm = bp;
-
-    if (l > 0) {
-	*bp++ = 'X';
-	--l;
-    }
-    if (l > 0) {
-	*bp++ = 'V';
-	--l;
-    }
-    if (l > 0) {
-	*bp++ = '_';
-	--l;
-    }
-
-    while (l > 0 && (ch = *cp++) != 0) {
-	if (isalnum(ch) == 0)
-	    continue;
-	*bp++ = toupper(ch);
-    }
-
-    *bp = 0;
-    MakeAtom(&atomNm[0], strlen(&atomNm[0]), TRUE);
-}
-
-static int
-Z4lAddAttribute(XF86AttributePtr attr, char *name,
-    int min, int max, int flags)
-{
-    char *cp = (char *)malloc(strlen((char *)&name[0]) + 1);
-
-    if (cp == NULL)
-	return 0;
-
-    attr->name = cp;
-    strcpy(&attr->name[0], name);
-    attr->min_value = min;
-    attr->max_value = max;
-    attr->flags = flags;
-    DBLOG(1, "attr %s\n", attr->name);
-
-    return 1;
-}
-
-static XF86VideoAdaptorPtr
-Z4lNewAdaptor(XF86VideoAdaptorPtr ** adpts, int *nadpts, int nattrs)
-{
-    int n;
-    Z4lPortPrivRec *pPriv;
-    XF86VideoAdaptorPtr adpt, *tadpts;
-
-    tadpts = (XF86VideoAdaptorPtr *) realloc(*adpts,
-	sizeof(*tadpts) * (*nadpts + 1));
-
-    if (tadpts == NULL)
-	return NULL;
-
-    *adpts = tadpts;
-    n = sizeof(*adpt) + sizeof(*pPriv) + 1 * sizeof(*adpt->pPortPrivates);
-    n += (nattrs - 1) * sizeof(pPriv->attrIds[0]);
-    adpt = (XF86VideoAdaptorPtr) malloc(n);
-
-    if (adpt == NULL)
-	return NULL;
-
-    memset(adpt, 0, n);
-    tadpts[*nadpts] = adpt;
-    ++*nadpts;
-    adpt->pPortPrivates = (DevUnion *) & adpt[1];
-    pPriv = (Z4lPortPrivRec *) & adpt->pPortPrivates[1];
-    adpt->pPortPrivates[0].ptr = (pointer) pPriv;
-    pPriv->adpt = adpt;
-    adpt->nPorts = 1;
-
-    return adpt;
-}
-
-static int
-Z4lSetPortAttribute(ScrnInfoPtr pScrni, Atom attribute, INT32 value,
-    pointer data)
-{
-    Z4lPortPrivRec *pPriv = (Z4lPortPrivRec *) data;
-    XF86VideoAdaptorPtr adpt;
-    XF86AttributePtr attr;
-    struct v4l2_control ctrl;
-    int i, nattrs, attrId, val;
-    const char *name = NameForAtom(attribute);
-    int old_fd = pPriv->fd;
-
-    DBLOG(1, "Z4lSetPortAttribute(%#lx,%d) '%s'\n", (unsigned long)attribute,
-	(int)value, name != NULL ? name : "_null_");
-
-    if (name == NULL)
-	return BadImplementation;
-    if (old_fd < 0 && z4l_open_device(pPriv) < 0)
-	return BadAccess;
-
-    adpt = pPriv->adpt;
-    attr = adpt->pAttributes;
-    nattrs = adpt->nAttributes;
-
-    for (i = 0; i < nattrs; ++i, ++attr)
-	if (strcmp(attr->name, name) == 0)
-	    break;
-
-    if (i >= nattrs)
-	return BadMatch;
-
-    attrId = pPriv->attrIds[i];
-    val = value;
-
-    switch (attrId) {
-    case ATTR_ENCODING_ID:
-	z4l_ovly_set_encoding(pPriv, val);
-	break;
-    case ATTR_KEYMODE_ID:
-	z4l_ovly_set_keymode(pPriv, val);
-	REGION_EMPTY(pScrni->pScreen, &pPriv->clips);
-	z4l_setup_colorkey(pPriv, pScrni->pScreen, &pPriv->clips);
-	break;
-    case ATTR_COLORKEY_ID:
-	z4l_ovly_set_colorkey(pPriv, val);
-	break;
-    default:
-	memset(&ctrl, 0, sizeof(ctrl));
-	ctrl.id = attrId + V4L2_CID_BASE;
-	ctrl.value = val;
-	if (IoCtl(pPriv->fd, VIDIOC_S_CTRL, &ctrl, 1) != 0)
-	    return BadMatch;
-	break;
-    }
-
-    if (old_fd < 0)
-	z4l_close_device(pPriv);
-
-    return Success;
-}
-
-static int
-Z4lGetPortAttribute(ScrnInfoPtr pScrni, Atom attribute, INT32 * value,
-    pointer data)
-{
-    Z4lPortPrivRec *pPriv = (Z4lPortPrivRec *) data;
-    XF86VideoAdaptorPtr adpt;
-    XF86AttributePtr attr;
-    struct v4l2_control ctrl;
-    int i, nattrs, attrId, val;
-    const char *name = NameForAtom(attribute);
-    int old_fd = pPriv->fd;
-
-    DBLOG(1, "Z4lGetPortAttribute(%#lx) '%s'\n",
-	(unsigned long)attribute, name != NULL ? name : "_null_");
-
-    if (name == NULL)
-	return BadImplementation;
-    if (old_fd < 0 && z4l_open_device(pPriv) < 0)
-	return BadAccess;
-
-    adpt = pPriv->adpt;
-    attr = adpt->pAttributes;
-    nattrs = adpt->nAttributes;
-
-    for (i = 0; i < nattrs; ++i, ++attr)
-	if (strcmp(attr->name, name) == 0)
-	    break;
-
-    if (i >= nattrs)
-	return BadMatch;
-
-    attrId = pPriv->attrIds[i];
-    val = 0;
-
-    switch (attrId) {
-    case ATTR_ENCODING_ID:
-	z4l_ovly_get_encoding(pPriv, &val);
-	*value = val;
-	break;
-    case ATTR_KEYMODE_ID:
-	z4l_ovly_get_keymode(pPriv, &val);
-	*value = val;
-	break;
-    case ATTR_COLORKEY_ID:
-	z4l_ovly_get_colorkey(pPriv, &val);
-	break;
-    default:
-	memset(&ctrl, 0, sizeof(ctrl));
-	ctrl.id = attrId + V4L2_CID_BASE;
-	if (IoCtl(pPriv->fd, VIDIOC_G_CTRL, &ctrl, 1) != 0)
-	    return BadMatch;
-	val = ctrl.value;
-	break;
-    }
-
-    if (old_fd < 0)
-	z4l_close_device(pPriv);
-
-    *value = val;
-
-    return Success;
-}
-
-static void (*oldAdjustFrame) (int scrnIndex, int x, int y, int flags) = NULL;
-
-static void
-Z4lAdjustFrame(int scrnIndex, int x, int y, int flags)
-{
-    int i;
-    XF86VideoAdaptorPtr adpt;
-    Z4lPortPrivRec *pPriv;
-
-    DBLOG(3, "Z4lAdjustFrame(%d,%d,%d)\n", x, y, flags);
-    z4l_x_offset = x;
-    z4l_y_offset = y;
-    oldAdjustFrame(scrnIndex, x, y, flags);
-
-    /* xv adjust does not handle putvideo case */
-    for (i = 0; i < Z4l_nAdaptors; ++i) {
-	adpt = Z4l_pAdaptors[i];
-	pPriv = (Z4lPortPrivRec *) adpt->pPortPrivates[0].ptr;
-	if (pPriv->run > 0) {
-	    pPriv->drw_is_set = 0;
-	    z4l_ovly_rect(pPriv,
-		pPriv->src_x, pPriv->src_y, pPriv->src_w, pPriv->src_h,
-		pPriv->drw_x, pPriv->drw_y, pPriv->drw_w, pPriv->drw_h);
-	}
-    }
-}
-
-static int
-Z4lInit(ScrnInfoPtr pScrni, XF86VideoAdaptorPtr ** adaptors)
-{
-    int i, id, fd, dev, enable, has_video, has_colorkey;
-    int ctl, cinp, inp, std, fmt, has_image;
-    int nadpts, nattrs, nencs, cenc, nimgs;
-    int numer, denom, width, height;
-    unsigned int pixfmt, cpixfmt, opixfmt;
-    XF86VideoAdaptorPtr *adpts, adpt;
-    XF86AttributePtr attrs, attr;
-    XF86VideoEncodingPtr encs, enc;
-    XF86ImagePtr ip, img, imgs;
-    Z4lPortPrivRec *pPriv;
-    char *dp, *msg;
-    char enc_name[256], attr_name[256];
-    int attrIds[V4L2_CID_LASTP1 - V4L2_CID_BASE + ATTR_MAX_ID];
-    struct v4l2_capability capability;
-    v4l2_std_id cstd_id, std_id;
-    struct v4l2_standard standard;
-    struct v4l2_format format, cfmt;
-    struct v4l2_input input;
-    struct v4l2_fmtdesc fmtdesc;
-    struct v4l2_queryctrl queryctrl;
-    struct v4l2_framebuffer fbuf;
-
-    DBLOG(1, "Init\n");
-    if (oldAdjustFrame == NULL) {
-	oldAdjustFrame = pScrni->AdjustFrame;
-	pScrni->AdjustFrame = Z4lAdjustFrame;
-    }
-
-    fd = -1;
-    enc = NULL;
-    encs = NULL;
-    nencs = 0;
-    img = NULL;
-    imgs = NULL;
-    nimgs = 0;
-    attr = NULL;
-    attrs = NULL;
-    nattrs = 0;
-    adpt = NULL;
-    adpts = NULL;
-    nadpts = 0;
-    has_video = has_image = has_colorkey = 0;
-
-    for (dev = 0; z4l_dev_paths[dev] != NULL; ++dev) {
-	fd = open(z4l_dev_paths[dev], O_RDWR, 0);
-	if (fd < 0)
-	    continue;
-	DBLOG(1, "%s open ok\n", z4l_dev_paths[dev]);
-	msg = NULL;
-	enable = 1;
-	if (IoCtl(fd, VIDIOC_QUERYCAP, &capability, 1) < 0)
-	    msg = "bad querycap";
-	else if ((capability.capabilities & V4L2_CAP_VIDEO_OVERLAY) == 0)
-	    msg = "no overlay";
-	else if ((capability.capabilities & V4L2_CAP_STREAMING) == 0)
-	    msg = "no streaming";
-#ifdef NONBLK_IO
-	else if (IoCtl(fd, FIONBIO, &enable, 1) != 0)
-	    msg = "cant enable non-blocking io";
-#endif
-	if (msg == NULL) {
-	    memset(&format, 0, sizeof(format));
-	    format.type = 0x100;
-	    if (IoCtl(fd, VIDIOC_G_FMT, &format, 1) != 0)
-		msg = "no src/dst ovly fmt";
-	}
-	if (msg != NULL) {
-	    DBLOG(0, "%s %s\n", z4l_dev_paths[dev], msg);
-	    close(fd);
-	    continue;
-	}
-
-	memset(&cfmt, 0, sizeof(cfmt));
-	cfmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	if (IoCtl(fd, VIDIOC_G_FMT, &cfmt, 1) < 0)
-	    goto fail;
-	if (IoCtl(fd, VIDIOC_G_STD, &cstd_id, 1) < 0)
-	    goto fail;
-	if (IoCtl(fd, VIDIOC_G_INPUT, &cinp, 1) < 0)
-	    goto fail;
-	cpixfmt = cfmt.fmt.pix.pixelformat;
-	cenc = 0;
-	for (inp = 0;; ++inp) {
-	    memset(&input, 0, sizeof(input));
-	    input.index = inp;
-	    if (IoCtl(fd, VIDIOC_ENUMINPUT, &input, 0) < 0)
-		break;
-	    id = inp;
-	    if (IoCtl(fd, VIDIOC_S_INPUT, &id, 1) < 0)
-		goto fail;
-	    for (std = 0;; ++std) {
-		memset(&standard, 0, sizeof(standard));
-		standard.index = std;
-		if (IoCtl(fd, VIDIOC_ENUMSTD, &standard, 0) < 0)
-		    break;
-		std_id = standard.id;
-		denom = standard.frameperiod.denominator;
-		numer = standard.frameperiod.numerator;
-		if (IoCtl(fd, VIDIOC_S_STD, &std_id, 1) < 0)
-		    continue;
-		memset(&format, 0, sizeof(format));
-		format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-		if (IoCtl(fd, VIDIOC_G_FMT, &format, 1) < 0)
-		    continue;
-		width = format.fmt.pix.width;
-		height = format.fmt.pix.height;
-		for (fmt = 0;; ++fmt) {
-		    memset(&fmtdesc, 0, sizeof(fmtdesc));
-		    fmtdesc.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-		    fmtdesc.index = fmt;
-		    if (IoCtl(fd, VIDIOC_ENUM_FMT, &fmtdesc, 0) < 0)
-			break;
-		    pixfmt = fmtdesc.pixelformat;
-		    ip = &pixfmts[0];
-		    for (i = sizeof(pixfmts) / sizeof(pixfmts[0]); --i >= 0;
-			++ip)
-			if (z4l_fourcc_pixfmt(ip->id) == pixfmt)
-			    break;
-
-		    if (i >= 0) {
-			id = nencs;
-			has_video = 1;
-			if ((enc = Z4lNewEncoding(&encs, &nencs)) == NULL)
-			    goto fail;
-			Z4lEncodingName(&enc_name[0], sizeof(enc_name),
-			    (char *)&input.name[0],
-			    (char *)&standard.name[0], (char *)&pixfmt);
-			if (Z4lAddEncoding(enc, &enc_name[0], id, width,
-				height, denom, numer, inp, std_id,
-				pixfmt) == 0)
-			    goto fail;
-			if (std_id == cstd_id && inp == cinp
-			    && pixfmt == cpixfmt)
-			    cenc = id;
-		    }
-		}
-	    }
-	}
-
-	if (IoCtl(fd, VIDIOC_S_INPUT, &cinp, 1) < 0)
-	    goto fail;
-	if (IoCtl(fd, VIDIOC_S_STD, &cstd_id, 1) < 0)
-	    goto fail;
-	if (IoCtl(fd, VIDIOC_S_FMT, &cfmt, 1) < 0)
-	    goto fail;
-
-	if (encs == NULL) {
-	    DBLOG(0, "no encodings\n");
-	    goto fail;
-	}
-
-	for (fmt = 0;; ++fmt) {
-	    memset(&fmtdesc, 0, sizeof(fmtdesc));
-	    fmtdesc.type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
-	    fmtdesc.index = fmt;
-	    if (IoCtl(fd, VIDIOC_ENUM_FMT, &fmtdesc, 0) < 0)
-		break;
-	    pixfmt = fmtdesc.pixelformat;
-	    ip = &pixfmts[0];
-	    for (i = sizeof(pixfmts) / sizeof(pixfmts[0]); --i >= 0; ++ip)
-		if (z4l_fourcc_pixfmt(ip->id) == pixfmt)
-		    break;
-
-	    if (i >= 0) {
-		has_image = 1;
-		if ((img = Z4lNewImage(&imgs, &nimgs)) == NULL)
-		    goto fail;
-		if (Z4lAddImage(img, ip) == 0)
-		    goto fail;
-	    }
-	}
-
-	if (nimgs > 0) {
-	    id = nencs;
-	    if ((enc = Z4lNewEncoding(&encs, &nencs)) == NULL)
-		goto fail;
-	    if (Z4lAddEncoding(enc, "XV_IMAGE", id, MAX_OVLY_WIDTH,
-		    MAX_OVLY_HEIGHT, 0, 0, 0, 0, pixfmt) == 0)
-		goto fail;
-	}
-
-	ctl = 0;
-	for (ctl = 0; ctl < (V4L2_CID_LASTP1 - V4L2_CID_BASE); ++ctl) {
-	    memset(&queryctrl, 0, sizeof(queryctrl));
-	    queryctrl.id = V4L2_CID_BASE + ctl;
-	    if (IoCtl(fd, VIDIOC_QUERYCTRL, &queryctrl, 0) < 0)
-		continue;
-	    if (queryctrl.type != V4L2_CTRL_TYPE_INTEGER &&
-		queryctrl.type != V4L2_CTRL_TYPE_BOOLEAN)
-		continue;
-	    attrIds[nattrs] = ctl;
-	    if ((attr = Z4lNewAttribute(&attrs, &nattrs)) == NULL)
-		goto fail;
-	    Z4lAttributeName(&attr_name[0], sizeof(attr_name),
-		(char *)&queryctrl.name[0]);
-	    if (Z4lAddAttribute(attr, &attr_name[0],
-		    queryctrl.minimum, queryctrl.maximum,
-		    XvSettable | XvGettable) == 0)
-		goto fail;
-	}
-	attrIds[nattrs] = ATTR_ENCODING_ID;
-	if ((attr = Z4lNewAttribute(&attrs, &nattrs)) == NULL)
-	    goto fail;
-	Z4lAttributeName(&attr_name[0], sizeof(attr_name), ATTR_ENCODING);
-	if (Z4lAddAttribute(attr, &attr_name[0], 0, nencs - 1,
-		XvSettable | XvGettable) == 0)
-	    goto fail;
-	memset(&fbuf, 0, sizeof(fbuf));
-	if (IoCtl(fd, VIDIOC_G_FBUF, &fbuf, 1) < 0)
-	    goto fail;
-	opixfmt = fbuf.fmt.pixelformat;
-
-	if ((fbuf.capability & V4L2_FBUF_CAP_CHROMAKEY) != 0) {
-	    attrIds[nattrs] = ATTR_KEYMODE_ID;
-	    if ((attr = Z4lNewAttribute(&attrs, &nattrs)) == NULL)
-		goto fail;
-	    Z4lAttributeName(&attr_name[0], sizeof(attr_name), ATTR_KEYMODE);
-	    if (Z4lAddAttribute(attr, &attr_name[0], 0, 1,
-		    XvSettable | XvGettable) == 0)
-		goto fail;
-	    attrIds[nattrs] = ATTR_COLORKEY_ID;
-	    if ((attr = Z4lNewAttribute(&attrs, &nattrs)) == NULL)
-		goto fail;
-	    Z4lAttributeName(&attr_name[0], sizeof(attr_name), ATTR_COLORKEY);
-	    if (Z4lAddAttribute(attr, &attr_name[0], 0, 0xffffff,
-		    XvSettable | XvGettable) == 0)
-		goto fail;
-	    has_colorkey = 1;
-	}
-
-	dp = malloc(strlen((char *)&capability.card[0]) + 1);
-	if (dp == NULL)
-	    goto fail;
-	strcpy(dp, (char *)&capability.card[0]);
-	if ((adpt = Z4lNewAdaptor(&adpts, &nadpts, nattrs)) == NULL)
-	    goto fail;
-	adpt->type = XvWindowMask | XvInputMask;
-	if (has_video != 0)
-	    adpt->type |= XvVideoMask;
-	if (has_image != 0)
-	    adpt->type |= XvImageMask;
-	adpt->flags = VIDEO_OVERLAID_IMAGES | VIDEO_CLIP_TO_VIEWPORT;
-	adpt->name = dp;
-	adpt->type = XvInputMask | XvWindowMask | XvVideoMask | XvImageMask;
-	adpt->pEncodings = encs;
-	adpt->nEncodings = nencs;
-	adpt->pFormats = &Formats[0];
-	adpt->nFormats = sizeof(Formats) / sizeof(Formats[0]);
-	adpt->pAttributes = attrs;
-	adpt->nAttributes = nattrs;
-	attrs = NULL;
-	nattrs = 0;
-	adpt->pImages = imgs;
-	adpt->nImages = nimgs;
-	imgs = NULL;
-	nimgs = 0;
-	adpt->PutVideo = Z4lPutVideo;
-	adpt->StopVideo = Z4lStopVideo;
-	adpt->SetPortAttribute = Z4lSetPortAttribute;
-	adpt->GetPortAttribute = Z4lGetPortAttribute;
-	adpt->QueryBestSize = Z4lQueryBestSize;
-	adpt->PutImage = Z4lPutImage;
-	adpt->QueryImageAttributes = Z4lQueryImageAttributes;
-	pPriv = (Z4lPortPrivRec *) adpt->pPortPrivates[0].ptr;
-	pPriv->fd = fd;
-	pPriv->run = -1;
-	pPriv->dir = 0;
-	pPriv->nbfrs = -1;
-	pPriv->bufsz = -1;
-	pPriv->last = -1;
-	pPriv->pixfmt = opixfmt;
-#if defined(REGION_NULL)
-	REGION_NULL(pScrni->pScreen, &pPriv->clips);
-#else
-	REGION_INIT(pScrni->pScreen, &pPriv->clips, NullBox, 0);
-#endif
-	strncpy(&pPriv->dev_path[0], z4l_dev_paths[dev],
-	    sizeof(pPriv->dev_path));
-	pPriv->enc = &encs[cenc];
-	for (i = 0; i < adpt->nAttributes; ++i)
-	    pPriv->attrIds[i] = attrIds[i];
-	DBLOG(1, "adpt %s\n", dp);
-	if (has_colorkey != 0) {
-	    z4l_ovly_set_colorkey(pPriv, DEFAULT_COLORKEY);
-	    z4l_ovly_set_keymode(pPriv, DEFAULT_KEYMODE);
-	}
-	close(fd);
-	pPriv->fd = -1;
-	adpt = NULL;
-	cenc = 0;
-	encs = NULL;
-	nencs = 0;
-    }
-
-    DBLOG(0, "init done, %d device(s) found\n", nadpts);
-    Z4l_nAdaptors = nadpts;
-    Z4l_pAdaptors = adpts;
-    *adaptors = adpts;
-
-    return nadpts;
-
-  fail:
-    if (attrs != NULL) {
-	for (i = 0; i < nattrs; ++i)
-	    if (attrs[i].name != NULL)
-		free(attrs[i].name);
-	free(attrs);
-    }
-
-    if (encs != NULL) {
-	for (i = 0; i < nencs; ++i) {
-	    if (encs[i].name != NULL)
-		free(encs[i].name);
-	}
-	free(encs);
-    }
-
-    if (imgs != NULL)
-	free(imgs);
-
-    if (adpts != NULL) {
-	for (i = 0; i < nadpts; ++i) {
-	    if ((adpt = adpts[i]) != NULL) {
-		if (adpt->name != NULL)
-		    free(adpt->name);
-		if ((attrs = adpt->pAttributes) != NULL) {
-		    for (i = 0; i < adpt->nAttributes; ++i)
-			if (attrs[i].name != NULL)
-			    free(attrs[i].name);
-		    free(attrs);
-		}
-		if ((encs = adpt->pEncodings) != NULL) {
-		    for (i = 0; i < adpt->nEncodings; ++i, ++enc)
-			if (encs[i].name != NULL)
-			    free(encs[i].name);
-		    free(encs);
-		}
-		if ((imgs = adpt->pImages) != NULL)
-		    free(imgs);
-		free(adpt);
-	    }
-	}
-	free(adpts);
-    }
-
-    if (fd >= 0)
-	close(fd);
-
-    return 0;
-}
-
-static Bool
-Z4lProbe(DriverPtr drv, int flags)
-{
-    DBLOG(1, "Probe\n");
-    if (flags & PROBE_DETECT)
-	return TRUE;
-
-    xf86XVRegisterGenericAdaptorDriver(Z4lInit);
-    drv->refCount++;
-
-    return TRUE;
-}
-
-static const OptionInfoRec *
-Z4lAvailableOptions(int chipid, int busid)
-{
-    return NULL;
-}
-
-static void
-Z4lIdentify(int flags)
-{
-    xf86Msg(X_INFO, "z4l driver for Video4Linux\n");
-}
-
-_X_EXPORT DriverRec Z4l = {
-    40001,
-    "z4l",
-    Z4lIdentify,
-    Z4lProbe,
-    Z4lAvailableOptions,
-    NULL,
-    0
-};
-
-#ifdef XFree86LOADER
-
-static MODULESETUPPROTO(z4lSetup);
-
-static XF86ModuleVersionInfo z4lVersionRec = {
-    "ztv",
-    MODULEVENDORSTRING, MODINFOSTRING1, MODINFOSTRING2,
-    XORG_VERSION_CURRENT, 0, 0, 1,
-    ABI_CLASS_VIDEODRV, ABI_VIDEODRV_VERSION, MOD_CLASS_NONE,
-    {0, 0, 0, 0}
-};
-
-_X_EXPORT XF86ModuleData ztvModuleData = { &z4lVersionRec, z4lSetup, NULL };
-
-static pointer
-z4lSetup(pointer module, pointer opts, int *errmaj, int *errmin)
-{
-    const char *osname;
-    static Bool setupDone = FALSE;
-
-    if (setupDone != FALSE) {
-	if (errmaj != NULL)
-	    *errmaj = LDR_ONCEONLY;
-	return NULL;
-    }
-
-    setupDone = TRUE;
-    LoaderGetOS(&osname, NULL, NULL, NULL);
-
-    if (osname == NULL || strcmp(osname, "linux") != 0) {
-	if (errmaj)
-	    *errmaj = LDR_BADOS;
-	if (errmin)
-	    *errmin = 0;
-
-	return NULL;
-    }
-
-    xf86AddDriver(&Z4l, module, 0);
-
-    return (pointer) 1;
-}
-
-#endif
-#endif /* !XvExtension */