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sys/winks/gstksvideodevice.c (gst_ks_video_device_class_init, gst_ks_video_device_set_state):

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Original commit message from CVS:
* sys/winks/gstksvideodevice.c (gst_ks_video_device_class_init,
gst_ks_video_device_set_state):
Don't set the pin state to KSSTATE_RUN from the streaming thread.
Skip KSSTATE_ACQUIRE when changing pin state downwards.
Be nice and specify G_PARAM_STATIC_STRINGS.
Remove unused finalize method.
* sys/winks/gstksvideosrc.c (DEFAULT_ENABLE_QUIRKS, PROP_ENABLE_QUIRKS,
enable_quirks, gst_ks_video_src_class_init, gst_ks_video_src_init,
gst_ks_video_src_finalize, gst_ks_video_src_get_property,
gst_ks_video_src_set_property, gst_ks_video_src_reset,
gst_ks_video_src_apply_driver_quirks, gst_ks_video_src_change_state,
gst_ks_video_src_set_caps):
First driver quirk: work around Logitech's hostile driver software to
improve stability and performance. See comments for details.
Provide a property to disable driver quirks (enabled by default).
Be nice and specify G_PARAM_STATIC_STRINGS.
Remove unused dispose method.
Tweak include order.
This commit is contained in:
Ole André Vadla Ravnås 2008-08-27 21:33:07 +00:00
parent 001628d341
commit 50a20db7ed
3 changed files with 99 additions and 47 deletions
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22
ChangeLog
View file

@ -1,3 +1,25 @@
2008-08-27 Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.com>
* sys/winks/gstksvideodevice.c (gst_ks_video_device_class_init,
gst_ks_video_device_set_state):
Don't set the pin state to KSSTATE_RUN from the streaming thread.
Skip KSSTATE_ACQUIRE when changing pin state downwards.
Be nice and specify G_PARAM_STATIC_STRINGS.
Remove unused finalize method.
* sys/winks/gstksvideosrc.c (DEFAULT_ENABLE_QUIRKS, PROP_ENABLE_QUIRKS,
enable_quirks, gst_ks_video_src_class_init, gst_ks_video_src_init,
gst_ks_video_src_finalize, gst_ks_video_src_get_property,
gst_ks_video_src_set_property, gst_ks_video_src_reset,
gst_ks_video_src_apply_driver_quirks, gst_ks_video_src_change_state,
gst_ks_video_src_set_caps):
First driver quirk: work around Logitech's hostile driver software to
improve stability and performance. See comments for details.
Provide a property to disable driver quirks (enabled by default).
Be nice and specify G_PARAM_STATIC_STRINGS.
Remove unused dispose method.
Tweak include order.
2008-08-27 Wim Taymans <wim.taymans@collabora.co.uk>
* gst/selector/gstinputselector.c: (gst_input_selector_init),

34
sys/winks/gstksvideodevice.c
View file

@ -88,7 +88,6 @@ typedef struct
GstKsVideoDevicePrivate))
static void gst_ks_video_device_dispose (GObject * object);
static void gst_ks_video_device_finalize (GObject * object);
static void gst_ks_video_device_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_ks_video_device_set_property (GObject * object, guint prop_id,
@ -111,19 +110,18 @@ gst_ks_video_device_class_init (GstKsVideoDeviceClass * klass)
g_type_class_add_private (klass, sizeof (GstKsVideoDevicePrivate));
gobject_class->dispose = gst_ks_video_device_dispose;
gobject_class->finalize = gst_ks_video_device_finalize;
gobject_class->get_property = gst_ks_video_device_get_property;
gobject_class->set_property = gst_ks_video_device_set_property;
g_object_class_install_property (gobject_class, PROP_CLOCK,
g_param_spec_object ("clock", "Clock to use",
"Clock to use", GST_TYPE_KS_CLOCK,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE_PATH,
g_param_spec_string ("device-path", "Device Path",
"The device path", DEFAULT_DEVICE_PATH,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
}
static void
@ -153,14 +151,6 @@ gst_ks_video_device_dispose (GObject * object)
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_ks_video_device_finalize (GObject * object)
{
GstKsVideoDevice *self = GST_KS_VIDEO_DEVICE (object);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_ks_video_device_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
@ -775,6 +765,10 @@ gst_ks_video_device_set_state (GstKsVideoDevice * self, KSSTATE state)
while (priv->state != state) {
KSSTATE next_state = priv->state + addend;
/* Skip the ACQUIRE step on the way down like DirectShow does */
if (addend < 0 && next_state == KSSTATE_ACQUIRE)
next_state = KSSTATE_STOP;
GST_DEBUG ("Changing pin state from %s to %s",
ks_state_to_string (priv->state), ks_state_to_string (next_state));
@ -891,15 +885,6 @@ gst_ks_video_device_read_frame (GstKsVideoDevice * self, guint8 * buf,
g_assert (priv->cur_media_type != NULL);
/* Set the state if needed */
if (G_UNLIKELY (priv->state != KSSTATE_RUN)) {
if (priv->clock != NULL)
gst_ks_clock_start (priv->clock);
if (!gst_ks_video_device_set_state (self, KSSTATE_RUN))
goto error_set_state;
}
/* First time we're called, submit the requests. */
if (G_UNLIKELY (!priv->requests_submitted)) {
priv->requests_submitted = TRUE;
@ -1001,13 +986,6 @@ gst_ks_video_device_read_frame (GstKsVideoDevice * self, guint8 * buf,
return GST_FLOW_OK;
/* ERRORS */
error_set_state:
{
gst_ks_video_device_parse_win32_error ("gst_ks_video_device_set_state",
GetLastError (), error_code, error_str);
return GST_FLOW_ERROR;
}
error_request_failed:
{
return GST_FLOW_ERROR;

90
sys/winks/gstksvideosrc.c
View file

@ -34,12 +34,12 @@
* </refsect2>
*/
#include "gstksvideosrc.h"
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "gstksvideosrc.h"
#include "gstksclock.h"
#include "gstksvideodevice.h"
#include "kshelpers.h"
@ -52,6 +52,7 @@
#define DEFAULT_DEVICE_INDEX -1
#define DEFAULT_ENSLAVE_KSCLOCK FALSE
#define DEFAULT_DO_STATS FALSE
#define DEFAULT_ENABLE_QUIRKS TRUE
enum
{
@ -62,6 +63,7 @@ enum
PROP_ENSLAVE_KSCLOCK,
PROP_DO_STATS,
PROP_FPS,
PROP_ENABLE_QUIRKS,
};
GST_DEBUG_CATEGORY (gst_ks_debug);
@ -75,6 +77,7 @@ typedef struct
gint device_index;
gboolean enslave_ksclock;
gboolean do_stats;
gboolean enable_quirks;
/* State */
GstKsClock *ksclock;
@ -93,7 +96,6 @@ typedef struct
(G_TYPE_INSTANCE_GET_PRIVATE ((o), GST_TYPE_KS_VIDEO_SRC, \
GstKsVideoSrcPrivate))
static void gst_ks_video_src_dispose (GObject * object);
static void gst_ks_video_src_finalize (GObject * object);
static void gst_ks_video_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
@ -150,7 +152,6 @@ gst_ks_video_src_class_init (GstKsVideoSrcClass * klass)
g_type_class_add_private (klass, sizeof (GstKsVideoSrcPrivate));
gobject_class->dispose = gst_ks_video_src_dispose;
gobject_class->finalize = gst_ks_video_src_finalize;
gobject_class->get_property = gst_ks_video_src_get_property;
gobject_class->set_property = gst_ks_video_src_set_property;
@ -171,26 +172,32 @@ gst_ks_video_src_class_init (GstKsVideoSrcClass * klass)
g_object_class_install_property (gobject_class, PROP_DEVICE_PATH,
g_param_spec_string ("device-path", "Device Path",
"The device path", DEFAULT_DEVICE_PATH, G_PARAM_READWRITE));
"The device path", DEFAULT_DEVICE_PATH,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
g_param_spec_string ("device-name", "Device Name",
"The human-readable device name", DEFAULT_DEVICE_NAME,
G_PARAM_READWRITE));
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE_INDEX,
g_param_spec_int ("device-index", "Device Index",
"The zero-based device index", -1, G_MAXINT, DEFAULT_DEVICE_INDEX,
G_PARAM_READWRITE));
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ENSLAVE_KSCLOCK,
g_param_spec_boolean ("enslave-ksclock", "Enslave the clock used by KS",
"Enslave the clocked used by Kernel Streaming",
DEFAULT_ENSLAVE_KSCLOCK, G_PARAM_READWRITE));
DEFAULT_ENSLAVE_KSCLOCK, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DO_STATS,
g_param_spec_boolean ("do-stats", "Enable statistics",
"Enable logging of statistics", DEFAULT_DO_STATS, G_PARAM_READWRITE));
"Enable logging of statistics", DEFAULT_DO_STATS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FPS,
g_param_spec_int ("fps", "Frames per second",
"Last measured framerate, if statistics are enabled",
-1, G_MAXINT, -1, G_PARAM_READABLE));
-1, G_MAXINT, -1, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ENABLE_QUIRKS,
g_param_spec_boolean ("enable-quirks", "Enable quirks",
"Enable driver-specific quirks", DEFAULT_ENABLE_QUIRKS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
GST_DEBUG_CATEGORY_INIT (gst_ks_debug, "ksvideosrc",
0, "Kernel streaming video source");
@ -212,20 +219,17 @@ gst_ks_video_src_init (GstKsVideoSrc * self, GstKsVideoSrcClass * gclass)
priv->device_index = DEFAULT_DEVICE_INDEX;
priv->enslave_ksclock = DEFAULT_ENSLAVE_KSCLOCK;
priv->do_stats = DEFAULT_DO_STATS;
}
static void
gst_ks_video_src_dispose (GObject * object)
{
GstKsVideoSrc *self = GST_KS_VIDEO_SRC (object);
G_OBJECT_CLASS (parent_class)->dispose (object);
priv->enable_quirks = DEFAULT_ENABLE_QUIRKS;
}
static void
gst_ks_video_src_finalize (GObject * object)
{
GstKsVideoSrc *self = GST_KS_VIDEO_SRC (object);
GstKsVideoSrcPrivate *priv = GST_KS_VIDEO_SRC_GET_PRIVATE (self);
g_free (priv->device_name);
g_free (priv->device_path);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
@ -260,6 +264,9 @@ gst_ks_video_src_get_property (GObject * object, guint prop_id,
g_value_set_int (value, priv->fps);
GST_OBJECT_UNLOCK (object);
break;
case PROP_ENABLE_QUIRKS:
g_value_set_boolean (value, priv->enable_quirks);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -298,6 +305,9 @@ gst_ks_video_src_set_property (GObject * object, guint prop_id,
priv->do_stats = g_value_get_boolean (value);
GST_OBJECT_UNLOCK (object);
break;
case PROP_ENABLE_QUIRKS:
priv->enable_quirks = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -319,6 +329,46 @@ gst_ks_video_src_reset (GstKsVideoSrc * self)
priv->prev_ts = GST_CLOCK_TIME_NONE;
}
static void
gst_ks_video_src_apply_driver_quirks (GstKsVideoSrc * self)
{
GstKsVideoSrcPrivate *priv = GST_KS_VIDEO_SRC_GET_PRIVATE (self);
HMODULE mod;
/*
* Logitech's driver software injects the following DLL into all processes
* spawned. This DLL does lots of nasty tricks, sitting in between the
* application and the low-level ntdll API (NtCreateFile, NtClose,
* NtDeviceIoControlFile, NtDuplicateObject, etc.), making all sorts
* of assumptions on which application threads do what.
*
* We could later work around this by having a worker-thread open the
* device, take care of doing set_caps() when asked to, closing the device
* when shutting down, and so forth.
*
* The only regression that this quirk causes is that the video effects
* feature doesn't work.
*/
mod = GetModuleHandle ("LVPrcInj.dll");
if (mod != NULL) {
GST_DEBUG_OBJECT (self, "hostile Logitech DLL detected, neutralizing it");
/*
* We know that no-one's actually keeping this handle around to decrement
* its reference count, so we'll take care of that job. The DLL's DllMain
* implementation takes care of rolling back changes when it gets unloaded,
* so this seems to be the cleanest and most future-proof way that we can
* get rid of it...
*/
FreeLibrary (mod);
/* Paranoia: verify that it's no longer there */
mod = GetModuleHandle ("LVPrcInj.dll");
if (mod != NULL)
GST_WARNING_OBJECT (self, "failed to neutralize hostile Logitech DLL");
}
}
static gboolean
gst_ks_video_src_open_device (GstKsVideoSrc * self)
{
@ -448,6 +498,8 @@ gst_ks_video_src_change_state (GstElement * element, GstStateChange transition)
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (priv->enable_quirks)
gst_ks_video_src_apply_driver_quirks (self);
if (!gst_ks_video_src_open_device (self))
goto open_failed;
break;
@ -508,7 +560,7 @@ gst_ks_video_src_set_caps (GstBaseSrc * basesrc, GstCaps * caps)
if (!gst_ks_video_device_set_caps (priv->device, caps))
return FALSE;
if (!gst_ks_video_device_set_state (priv->device, KSSTATE_PAUSE))
if (!gst_ks_video_device_set_state (priv->device, KSSTATE_RUN))
return FALSE;
return TRUE;