Commit Graph

2093 Commits

Author SHA1 Message Date
Adam Jackson
cbd3cfbad3 dix: Restore PaintWindow screen hook
Removes the last cpp conditional on ROOTLESS from dix code.

Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2015-07-08 16:41:28 -04:00
Adam Jackson
6f3332b9f4 dix: unifdef pWin->rootlessUnhittable
No reason to vary the dix ABI over this.

Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2015-07-08 16:41:28 -04:00
Adam Jackson
b51f7f8582 dix: Unexport various implementation details
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2015-07-08 16:40:57 -04:00
Dave Airlie
90db5edf11 prime: add rotation support for offloaded outputs (v2)
One of the lacking features with output offloading was
that screen rotation didn't work at all.

This patch makes 0/90/180/270 rotation work with USB output
and GPU outputs.

When it allocates the shared pixmap it allocates it rotated,
and any updates to the shared pixmap are done using a composite
path that does the rotation. The slave GPU then doesn't need
to know about the rotation and just displays the pixmap.

v2:
rewrite the sync dirty helper to use the dst pixmap, and
avoid any strange hobbits and rotations.

This breaks ABI in two places.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2015-07-08 11:13:09 -07:00
Dave Airlie
8218dadd30 cursor: drop ARGB_CURSOR
I doubt anyone builds with this turned off or has done for a long
time.

It helps my eyes bleed slightly less when reading the code, I've left
the define in place as some drivers use it.

Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-06-30 12:17:51 +10:00
Peter Hutterer
da10d0cb42 dix: hook up the unaccelerated valuator masks
If present, access the unaccelerated valuator mask values for DGA and XI2 raw
events.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-05-20 12:44:58 +10:00
Peter Hutterer
4c2f2cb4c8 dix: Add unaccelerated valuators to the ValuatorMask
Allows a mask to carry both accelerated and unaccelerated motion at the same
time.

This is required for xf86-input-libinput where the pointer acceleration
happens in libinput already, but parts of the server, specifically raw events
and DGA rely on device-specific unaccelerated data.

To ease integration add this as a second set to the ValuatorMask rather than
extending all APIs to carry a second, possibly NULL set of valuators.

Note that a valuator mask should only be used in either accel/unaccel or
standard mode at any time. Switching requires either a valuator_mask_zero()
call or unsetting all valuators one-by-one. Trying to mix the two will produce
a warning.

The server has a shortcut for changing a mask with the
valuator_mask_drop_unaccelerated() call. This saves us from having to loop
through all valuators on every event, we can just drop the bits we know we
don't want.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-05-20 12:44:58 +10:00
Peter Hutterer
3f0d3201f3 dix: fix indentation
from 9ff89a2e46

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-05-20 12:44:54 +10:00
Jason Gerecke
9ff89a2e46 dix: Do not allow device transform to be set on valuatorless devices
If a device does not have any valuators, it makes no sense to set the
device transformation. Return a BadMatch error to let the caller know
that they're trying something stupid.

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
2015-05-11 15:43:04 -07:00
Rui Matos
fa62ca68ef dix/events: Set currentTime to the given time stamp in NoticeTime
The refactoring in commit efc1035ca9
removed the actual update of currentTime.

Signed-off-by: Rui Matos <tiagomatos@gmail.com>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2015-05-11 15:40:04 -07:00
Alan Coopersmith
b9e665c8b2 Convert dix/* to new *allocarray functions
v2: remove now useless parentheses

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2015-04-21 16:57:08 -07:00
Alan Coopersmith
f3ba909753 Let calloc handle multiplication
It's going to multiply anyway, so if we have non-constant values, might
as well let it do the multiplication instead of adding another multiply,
and good versions of calloc will check for & avoid overflow in the process.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2015-04-21 16:57:07 -07:00
Peter Hutterer
f485a1af64 Drop valuator mask argument from GetKeyboardEvents
Nothing was using it and if anyone had they would've gotten a warning and
noticed that it doesn't actually work. Drop this, it has been unused for years.

Input ABI 22

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
2015-03-13 12:31:21 +10:00
Alan Coopersmith
9e002dfcd7 Get rid of const warnings in XSERVER_INPUT_EVENT dtrace probe calls
Use typedefs to work around dtrace dropping const qualifiers from probe
arguments when generating Xserver-dtrace.h.   Add new probes.h header to
avoid having to replicate these typedefs in every file with dtrace probes.

Gets rid of these warnings from gcc 4.8:
 getevents.c:1096:9:
  warning: passing argument 6 of '__dtrace_Xserver___input__event' discards
  'const' qualifier from pointer target type [enabled by default]
 getevents.c:1096:9:
  warning: passing argument 7 of '__dtrace_Xserver___input__event' disards
  'const' qualifier from pointer target type [enabled by default]
 getevents.c:1651:9:
  warning: passing argument 6 of '__dtrace_Xserver___input__event' disards
  'const' qualifier from pointer target type [enabled by default]
 getevents.c:1651:9:
  warning: passing argument 7 of '__dtrace_Xserver___input__event' disards
  'const' qualifier from pointer target type [enabled by default]
 getevents.c:1791:9:
  warning: passing argument 6 of '__dtrace_Xserver___input__event' disards
  'const' qualifier from pointer target type [enabled by default]
 getevents.c:1791:9:
  warning: passing argument 7 of '__dtrace_Xserver___input__event' disards
  'const' qualifier from pointer target type [enabled by default]
 getevents.c:1921:9:
  warning: passing argument 6 of '__dtrace_Xserver___input__event' disards
  'const' qualifier from pointer target type [enabled by default]
 getevents.c:1921:9:
  warning: passing argument 7 of '__dtrace_Xserver___input__event' disards
  'const' qualifier from pointer target type [enabled by default]

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-02-10 18:14:44 -08:00
Peter Hutterer
ee21be1324 dix: offset touch root coordinates by ScreenRec origins (#86655)
For two ScreenRecs abs pointer positioning was working fine, but touch events
stuck to the lower/right edge on any screen but the one with a 0/0 origin.
Cause is a missing offset by the screen coordinates, causing the root
coordinates in the event to desktop-wide, not screen-wide.

Offset properly, just like we do for pointer events.

X.Org Bug 86655 <http://bugs.freedesktop.org/show_bug.cgi?id=86655>

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-01-05 09:53:47 +10:00
Keith Packard
dc777c346d dix: Allow zero-height PutImage requests
The length checking code validates PutImage height and byte width by
making sure that byte-width >= INT32_MAX / height. If height is zero,
this generates a divide by zero exception. Allow zero height requests
explicitly, bypassing the INT32_MAX check.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2015-01-03 21:57:28 -08:00
Alan Coopersmith
97015a07b9 dix: integer overflow in RegionSizeof() [CVE-2014-8092 3/4]
RegionSizeof contains several integer overflows if a large length
value is passed in.  Once we fix it to return 0 on overflow, we
also have to fix the callers to handle this error condition

v2: Fixed limit calculation in RegionSizeof as pointed out by jcristau.

Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Julien Cristau <jcristau@debian.org>
2014-12-08 18:09:47 -08:00
Alan Coopersmith
eeae42d60b dix: integer overflow in ProcPutImage() [CVE-2014-8092 1/4]
ProcPutImage() calculates a length field from a width, left pad and depth
specified by the client (if the specified format is XYPixmap).

The calculations for the total amount of memory the server needs for the
pixmap can overflow a 32-bit number, causing out-of-bounds memory writes
on 32-bit systems (since the length is stored in a long int variable).

Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2014-12-08 18:09:46 -08:00
John Hunter
6a117af7e7 fix an annotation mistake
Signed-off-by: John Hunter <zhaojunwang@pku.edu.cn>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2014-11-12 10:26:02 +10:00
Peter Hutterer
732fd7e571 Drop trailing whitespaces
sed -i "s/[ ]\+$//g" **/*.(c|h)

happy reviewing...
git diff -w is an empty diff.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2014-11-12 10:25:00 +10:00
Peter Hutterer
96143d6dc3 dix: silence compiler warning comparing CARD32 to -1
window.c:3246:36: warning: comparison of constant -1 with expression of type
'CARD32' (aka 'unsigned int') is always true
[-Wtautological-constant-out-of-range-compare]
    if (optional->backingBitPlanes != ~0L)
            ~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Michel Dänzer <michel@daenzer.net>
2014-11-12 10:25:00 +10:00
Peter Hutterer
04ca169979 dix: silence compiler warning
inpututils.c:243:26: warning: comparison of constant 256 with expression of
type 'KeyCode' (aka 'unsigned char') is always false
[-Wtautological-constant-out-of-range-compare]
        if (modkeymap[i] >= MAP_LENGTH)
                    ~~~~~~~~~~~~ ^  ~~~~~~~~~~

MAP_LENGTH depends on MAX_BUTTONS which is somewhat arbitrarily chosen. We
don't expect this to ever change, but just in case leave the condition there
so the code is correct if we drop the number down.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2014-11-12 10:25:00 +10:00
Keith Packard
65dd1ba7b3 dix: Untwist transformAbsolute logic, eliminate uninitialized value warnings
tranformAbsolute has a pretty simple job, that of running the X/Y
values from a device through the transformation matrix. The tricky bit
comes when the current device state doesn't include one of the
values. In that case, the last delivered value is back-converted to
device space and used instead.

The logic was twisted though, confusing GCC's uninitialized value
detection logic and emitting warnings.

This has been fixed by changing the code to:

 1) Detect whether the ValuatorMask includes X/Y values
 2) If either are missing, back-convert the current values into ox/oy
 3) When X/Y are present, set ox/oy to the current value
 4) Transform
 5) Store X/Y values if changed or if they were set before.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2014-10-28 20:56:37 -07:00
Adam Jackson
73e2383b73 dix: Always store GC client clip as a region (v2)
Again, this changes FixesCreateRegionFromGC to throw BadMatch when fed a
GC with no client clip.

v2: Fix Xnest and some variable names (Keith)

Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-27 15:46:05 -04:00
Keith Packard
d634ecdf82 Merge remote-tracking branch 'ajax/dead-code' 2014-10-09 15:08:31 +02:00
Adam Jackson
5ecd7866f7 misc: Fold together some redundant conditionals
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-09 11:19:06 +02:00
Adam Jackson
939ca767c7 dix: Remove an obfuscatory macro
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-09 11:14:53 +02:00
Adam Jackson
d138d9ccc6 dix: Remove some pointless casting of NULL
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-09 11:14:53 +02:00
Adam Jackson
277330075b dix: Remove an empty if
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-09 11:14:53 +02:00
Adam Jackson
81d76a835b dix: Lower backStorage to a bit instead of a pointer
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-09 11:14:53 +02:00
Adam Jackson
322ba42c23 dix: Remove DIXsaveUnder bit from the Window
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-09 11:14:53 +02:00
Adam Jackson
1e56b2dfc6 mi: Move pScreen->SendGraphicsExpose up to dix
No DDX is overriding this and it's fairly absurd to expose it as a
screen operation anyway.

Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-09 11:14:53 +02:00
Adam Jackson
0d30d44a8c dix: Drop the third argument from WindowExposuresProcPtr
A careful read shows that it was always NULL.  It hasn't always been; as
the DDX spec indicates, it was the "occluded region that has backing
store", but since that backing store code is long gone, we can nuke it.

mi{,Overlay}WindowExposures get slightly simpler here, and will get even
simpler in just a moment.

Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-09 11:14:44 +02:00
Adam Jackson
c695a1430b input: Remove unused SetKeySymsMap
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-10-08 10:10:39 +02:00
Daniel Martin
12c19bbff4 dix: Remove XpExtension leftovers from protocol.txt
There's no XPrint extension (anymore).

Signed-off-by: Daniel Martin <consume.noise@gmail.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2014-10-02 10:16:24 -07:00
Keith Packard
69d8572ae4 Build required portions of registry.c automatically [v2]
Instead of making the inclusion of the registry code a global
conditional, split the registry into two pieces; the bits required by
the X-Resource extension (the resource names) and the bits required by
the XCSECURITY extension (the protocol names). Build each set of code
if the related extension is being built.

v2: Check for both XCSECURITY and XSELINUX.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
2014-09-18 15:29:29 -07:00
Keith Packard
a11fc2493e dix: Close protocol.txt after we're done loading extension names
Don't leave this file open during the whole server execution process;
close it once all of the extensions are initialized.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
2014-09-18 15:29:27 -07:00
Dave Airlie
da4bad620a pixmap: fix reverse optimus support with multiple heads
For doing reverese optimus to multiple outputs on a secondary GPU
the GPU can store the blits into a large screen pixmap, unfortunately
this means we need a destination offset into the dirty code, so
add a new API that just adds this interface.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Keith Packard <keithp@keithp.com>
2014-09-11 18:14:44 -07:00
Peter Hutterer
1e30fc1b99 xkb: ignore floating slave devices when updating from master (#81885)
Introduced in 45fb3a934d. When a device is
enabled, the master's locked state is pushed to the slave. If the device is
floating, no master exists and we triggered a NULL-pointer dereference
in XkbPushLockedStateToSlaves.

X.Org Bug 81885 <http://bugs.freedesktop.org/show_bug.cgi?id=81885>

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2014-08-12 15:53:51 -07:00
Egbert Eich
e6c8c7e46c BellProc: Send bell event on core protocol bell when requested
XKB allows to override the BellProc() ringing the 'keyboard bell':
instead an event is sent to an X client which can perform an
appropriate action.
In most cases this effectively prevents the core protocol bell
from ringing: if no BellProc() is set for the device, no attempt
is made to ring a bell.
This patch ensures that an XKB bell event is sent also when
the core protocol bell is rung end thus an appropriate action
can be taken by a client.

Signed-off-by: Egbert Eich <eich@freedesktop.org>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
2014-08-04 22:02:26 -07:00
Adam Jackson
71ef49062e dix: Make some LBX-era code more obvious
isItTimeToYield in the conditional effectively didn't do anything here.
Take it out, and remove the comment since LBX proxies aren't a thing for
us anymore.

Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2014-07-29 09:48:17 -04:00
Peter Hutterer
9a19bf06b5 Revert "dix: fix up coordinate scaling when external monitors are present"
This reverts commit d90b5f8301.

Reverting for two reasons:
* the scaling does not work on devices that don't advertise resolution, and
  the default resolution used (100 units/mm) is higher than most devices,
  resulting in a significant slowdown of the touchpads.
* the scaling is still affected by resolution changing. The patch worked
  before acceleration but since it maps into resolution-dependent dx/dy
  coordinates the acceleration may distort the movement after the fact. So the
  same input data generates different movements depending on the resolution.
  This can't easily be fixed for all affected devices as synaptics has its own
  velocity calculation method whereas wacom doesn't. So anything in the server
  won't work for both at the same time.

Revert this for now, until a more integrated solution can be implemented.
2014-07-14 15:05:58 +10:00
Peter Hutterer
d90b5f8301 dix: fix up coordinate scaling when external monitors are present
The goal of all this is to get an x/y motion reflecting the motion
on the device, i.e. a circle on the device is a circle on the screen.

This is currently done by scaling the y coordinate depending on the screen
ratio vs device ratio. Depending on that ratio the movement on the y axis may
be accelerated (ratio < 1) or slowed (ratio > 1). This leads to the weird
effect that changing the screen ratio by plugging a new monitor changes the
speed of the touchpad.

Use a different algorithm: calculate the physical movement on the device, map
that to the same-ish distance on the screen, then convert that back into a
device-specific vector. This way we get the same mapping regardless of the
current screen dimensions.

Since the pointer accel code doesn't take device resolution into account, make
sure we apply our crazy mapping before we accelerate. This way we accelerate
resolution-independent.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2014-06-23 11:04:55 +10:00
Brendan King
b92d86a982 dix: fix pixmap leak on server reset
The server is leaking a pixmap (created by CreateDefaultStipple()) on
reset. The leak is caused by some X Server graphics contexts not being
freed on reset by the machine independent cursor code in the server,
which in turn is caused by the cursor cleanup code
(miSpriteDeviceCursorCleanup()) not being called.

Ensures the DeviceCursorCleanup() function is called when the associated
input device is closed on server reset.

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2014-06-04 21:32:30 -07:00
Brendan King
a99c061aaf dix: reference the cursor just once in InitializeSprite()
The new current cursor was being referenced twice, resulting in a
memory leak when the current server generation ended.

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2014-06-04 21:32:14 -07:00
Peter Hutterer
e06fbe4dc8 dix: remove a now-superfluous comment
Obsolete since 93945b0a74

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2014-04-29 10:06:25 +10:00
Michal Srb
6a848122de input: Remove invalid bug checks.
Commit 2f1aedcaed added several bug checks. Some
of them are not correct.

Checks in Init(Ptr|String|Bell|Led|Integer)FeedbackClassDeviceStruct verify
that no feedback struct was set yet, but that is not required. If any feedback
structs are already present, the function will chain them behind the new one.

Signed-off-by: Michal Srb <msrb@suse.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2014-04-29 10:06:25 +10:00
Eric Anholt
abf1202706 glx: Move the GLX variable caching what GL context is current to dix.
GLX is trying to track whether the context it wants is current, to
avoid the glFlush() (and the rest of the overhead) that occurs on all
MakeCurrent calls.  However, its cache can be incorrect now that
glamor exists.  This is a step toward getting glamor to coordinate
with GLX.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
2014-04-23 10:32:02 -07:00
Jasper St. Pierre
ea15f8b4c9 dixfonts: Turn a missing directory ErrorF into a DebugF
On systems without these directories, we don't need to be complaining
loudly.

Reviewed-by: Kristian Hoegsberg <krh@bitplanet.net>

Signed-off-by: Keith Packard <keithp@keithp.com>
2014-04-21 15:01:02 -07:00
Keith Packard
73698d41e4 Make XYToWindow a screen function
This allows DDXen to override the window picking to account for
native windows not seen by the X server.  The bulk of the picking logic
is exposed as a new helper function, miSpriteTrace().  This function
completes the sprite trace filled out by the caller, and can be set up
to start the search from a given toplevel window.

v2: Leave existing XYToWindow API in place for API compatibility

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
2014-04-01 10:30:42 -07:00