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gstreamer/sys/xvimage/xvimageallocator.c

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xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
/* GStreamer
* Copyright (C) <2005> Julien Moutte <julien@moutte.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_XSHM
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#endif /* HAVE_XSHM */
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#ifdef HAVE_XSHM
#include <X11/extensions/XShm.h>
#endif /* HAVE_XSHM */
#include <string.h>
#include <math.h>
/* Object header */
#include "xvimageallocator.h"
/* Debugging category */
#include <gst/gstinfo.h>
/* Helper functions */
#include <gst/video/video.h>
GST_DEBUG_CATEGORY_STATIC (gst_debug_xvimageallocator);
#define GST_CAT_DEFAULT gst_debug_xvimageallocator
struct _GstXvImageMemory
{
GstMemory parent;
gint im_format;
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
GstVideoInfo info;
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
GstVideoRectangle crop;
XvImage *xvimage;
#ifdef HAVE_XSHM
XShmSegmentInfo SHMInfo;
#endif /* HAVE_XSHM */
};
struct _GstXvImageAllocator
{
GstAllocator parent;
GstXvContext *context;
};
struct _GstXvImageAllocatorClass
{
GstAllocatorClass parent_class;
};
gboolean
gst_xvimage_memory_is_from_context (GstMemory * mem, GstXvContext * context)
{
GstXvImageAllocator *alloc;
if (!GST_IS_XVIMAGE_ALLOCATOR (mem->allocator))
return FALSE;
alloc = GST_XVIMAGE_ALLOCATOR_CAST (mem->allocator);
if (alloc->context != context)
return FALSE;
return TRUE;
}
gint
gst_xvimage_memory_get_format (GstXvImageMemory * xvmem)
{
g_return_val_if_fail (xvmem != NULL, FALSE);
return xvmem->im_format;
}
XvImage *
gst_xvimage_memory_get_xvimage (GstXvImageMemory * xvmem)
{
g_return_val_if_fail (xvmem != NULL, FALSE);
return xvmem->xvimage;
}
gboolean
gst_xvimage_memory_get_crop (GstXvImageMemory * xvmem, GstVideoRectangle * crop)
{
g_return_val_if_fail (xvmem != NULL, FALSE);
if (crop)
*crop = xvmem->crop;
return TRUE;
}
/* X11 stuff */
static gboolean error_caught = FALSE;
static int
gst_xvimage_handle_xerror (Display * display, XErrorEvent * xevent)
{
char error_msg[1024];
XGetErrorText (display, xevent->error_code, error_msg, 1024);
GST_DEBUG ("xvimage triggered an XError. error: %s", error_msg);
error_caught = TRUE;
return 0;
}
static GstMemory *
gst_xvimage_allocator_dummy_alloc (GstAllocator * allocator, gsize size,
GstAllocationParams * params)
{
return NULL;
}
static void
gst_xvimage_allocator_free (GstAllocator * allocator, GstMemory * gmem)
{
GstXvImageMemory *mem = (GstXvImageMemory *) gmem;
GstXvImageAllocator *alloc = (GstXvImageAllocator *) allocator;
GstXvContext *context;
if (gmem->parent)
goto sub_mem;
context = alloc->context;
GST_DEBUG_OBJECT (allocator, "free memory %p", mem);
g_mutex_lock (&context->lock);
#ifdef HAVE_XSHM
if (context->use_xshm) {
if (mem->SHMInfo.shmaddr != ((void *) -1)) {
GST_DEBUG_OBJECT (allocator, "XServer ShmDetaching from 0x%x id 0x%lx",
mem->SHMInfo.shmid, mem->SHMInfo.shmseg);
XShmDetach (context->disp, &mem->SHMInfo);
XSync (context->disp, FALSE);
shmdt (mem->SHMInfo.shmaddr);
mem->SHMInfo.shmaddr = (void *) -1;
}
if (mem->xvimage)
XFree (mem->xvimage);
} else
#endif /* HAVE_XSHM */
{
if (mem->xvimage) {
g_free (mem->xvimage->data);
XFree (mem->xvimage);
}
}
XSync (context->disp, FALSE);
g_mutex_unlock (&context->lock);
sub_mem:
g_slice_free (GstXvImageMemory, mem);
}
static gpointer
gst_xvimage_memory_map (GstXvImageMemory * mem, gsize maxsize,
GstMapFlags flags)
{
return mem->xvimage->data + mem->parent.offset;
}
static gboolean
gst_xvimage_memory_unmap (GstXvImageMemory * mem)
{
return TRUE;
}
static GstXvImageMemory *
gst_xvimage_memory_share (GstXvImageMemory * mem, gssize offset, gsize size)
{
GstXvImageMemory *sub;
GstMemory *parent;
/* We can only share the complete memory */
if (offset != 0)
return NULL;
if (size != -1 && size != mem->xvimage->data_size)
return NULL;
GST_DEBUG ("share memory %p", mem);
/* find the real parent */
if ((parent = mem->parent.parent) == NULL)
parent = (GstMemory *) mem;
if (size == -1)
size = mem->parent.size - offset;
/* the shared memory is always readonly */
sub = g_slice_new (GstXvImageMemory);
gst_memory_init (GST_MEMORY_CAST (sub), GST_MINI_OBJECT_FLAGS (parent) |
GST_MINI_OBJECT_FLAG_LOCK_READONLY, mem->parent.allocator,
&mem->parent, mem->parent.maxsize, mem->parent.align,
mem->parent.offset + offset, size);
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
sub->info = mem->info;
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
sub->im_format = mem->im_format;
sub->crop = mem->crop;
sub->xvimage = mem->xvimage;
#ifdef HAVE_XSHM
sub->SHMInfo = mem->SHMInfo;
#endif
return sub;
}
static GstXvImageMemory *
gst_xvimage_memory_copy (GstMemory * gmem, gssize offset, gsize size)
{
GstXvImageMemory *mem, *copy;
mem = (GstXvImageMemory *) gmem;
/* We can only copy the complete memory */
if (offset != 0)
return NULL;
if (size != -1 && size != mem->xvimage->data_size)
return NULL;
GST_DEBUG ("copy memory %p", mem);
copy = (GstXvImageMemory *)
gst_xvimage_allocator_alloc (GST_XVIMAGE_ALLOCATOR_CAST (gmem->allocator),
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
mem->im_format, &mem->info, mem->xvimage->width,
mem->xvimage->height, &mem->crop, NULL);
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
memcpy (copy->xvimage->data + copy->parent.offset,
mem->xvimage->data + mem->parent.offset, mem->xvimage->data_size);
return copy;
}
#define gst_xvimage_allocator_parent_class parent_class
G_DEFINE_TYPE (GstXvImageAllocator, gst_xvimage_allocator, GST_TYPE_ALLOCATOR);
static void gst_xvimage_allocator_finalize (GObject * object);
#define GST_XVIMAGE_ALLOCATOR_NAME "xvimage"
static void
gst_xvimage_allocator_class_init (GstXvImageAllocatorClass * klass)
{
GObjectClass *gobject_class;
GstAllocatorClass *allocator_class;
gobject_class = (GObjectClass *) klass;
allocator_class = (GstAllocatorClass *) klass;
gobject_class->finalize = gst_xvimage_allocator_finalize;
allocator_class->alloc = gst_xvimage_allocator_dummy_alloc;
allocator_class->free = gst_xvimage_allocator_free;
GST_DEBUG_CATEGORY_INIT (gst_debug_xvimageallocator, "xvimageallocator", 0,
"xvimageallocator object");
}
static void
gst_xvimage_allocator_init (GstXvImageAllocator * allocator)
{
GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
alloc->mem_type = GST_XVIMAGE_ALLOCATOR_NAME;
alloc->mem_map = (GstMemoryMapFunction) gst_xvimage_memory_map;
alloc->mem_unmap = (GstMemoryUnmapFunction) gst_xvimage_memory_unmap;
alloc->mem_share = (GstMemoryShareFunction) gst_xvimage_memory_share;
alloc->mem_copy = (GstMemoryShareFunction) gst_xvimage_memory_copy;
/* fallback is_span */
GST_OBJECT_FLAG_SET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC);
}
static void
gst_xvimage_allocator_finalize (GObject * object)
{
GstXvImageAllocator *alloc = GST_XVIMAGE_ALLOCATOR (object);
GST_DEBUG_OBJECT (object, "finalize");
gst_xvcontext_unref (alloc->context);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
GstXvImageAllocator *
gst_xvimage_allocator_new (GstXvContext * context)
{
GstXvImageAllocator *alloc;
g_return_val_if_fail (GST_IS_XVCONTEXT (context), NULL);
alloc = g_object_new (GST_TYPE_XVIMAGE_ALLOCATOR, NULL);
alloc->context = gst_xvcontext_ref (context);
return alloc;
}
GstXvContext *
gst_xvimage_allocator_peek_context (GstXvImageAllocator * allocator)
{
g_return_val_if_fail (GST_IS_XVIMAGE_ALLOCATOR (allocator), NULL);
return allocator->context;
}
GstMemory *
gst_xvimage_allocator_alloc (GstXvImageAllocator * allocator, gint im_format,
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
const GstVideoInfo * info, gint padded_width, gint padded_height,
xvimageallocator: const correctness in gst_xvimage_allocator_alloc(). https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-18 09:59:23 +00:00
const GstVideoRectangle * crop, GError ** error)
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
{
int (*handler) (Display *, XErrorEvent *);
gboolean success = FALSE;
GstXvContext *context;
xvimagsink: fix failure to allocate large shared memory blocks A previous patch increased allocations by 15 bytes in order to ensure 16 byte alignment for g_malloc blocks. However, shared memory is already block aligned, and this extra 15 bytes caused allocation to fail when we were already allocating to the shared memory limit, which is a lot smaller than typical available RAM. Fix this by removing the alignment slack when allocating shared memory. https://bugzilla.gnome.org/show_bug.cgi?id=706066
2014-04-04 11:32:14 +00:00
gint align, offset;
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
GstXvImageMemory *mem;
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
gint expected_size = 0;
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
context = allocator->context;
mem = g_slice_new (GstXvImageMemory);
mem->im_format = im_format;
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
mem->info = *info;
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
#ifdef HAVE_XSHM
mem->SHMInfo.shmaddr = ((void *) -1);
mem->SHMInfo.shmid = -1;
#endif
mem->crop = *crop;
GST_DEBUG_OBJECT (allocator, "creating image %p (%dx%d) cropped %dx%d-%dx%d",
mem, padded_width, padded_height, crop->x, crop->y, crop->w, crop->h);
g_mutex_lock (&context->lock);
/* Setting an error handler to catch failure */
error_caught = FALSE;
handler = XSetErrorHandler (gst_xvimage_handle_xerror);
#ifdef HAVE_XSHM
if (context->use_xshm) {
mem->xvimage = XvShmCreateImage (context->disp,
context->xv_port_id, im_format, NULL, padded_width, padded_height,
&mem->SHMInfo);
if (!mem->xvimage || error_caught) {
g_mutex_unlock (&context->lock);
/* Reset error flag */
error_caught = FALSE;
/* Push a warning */
GST_WARNING_OBJECT (allocator,
"could not XShmCreateImage a %dx%d image", padded_width,
padded_height);
/* Retry without XShm */
context->use_xshm = FALSE;
/* Hold X mutex again to try without XShm */
g_mutex_lock (&context->lock);
goto no_xshm;
}
/* we have to use the returned data_size for our shm size */
GST_LOG_OBJECT (allocator, "XShm image size is %d",
mem->xvimage->data_size);
/* calculate the expected size. This is only for sanity checking the
* number we get from X. */
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
if (GST_VIDEO_FORMAT_INFO_IS_YUV (info->finfo)) {
switch (GST_VIDEO_FORMAT_INFO_FORMAT (info->finfo)) {
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
{
gint pitches[3];
gint offsets[3];
guint plane;
offsets[0] = 0;
pitches[0] = GST_ROUND_UP_4 (padded_width);
offsets[1] = offsets[0] + pitches[0] * GST_ROUND_UP_2 (padded_height);
pitches[1] = GST_ROUND_UP_8 (padded_width) / 2;
offsets[2] =
offsets[1] + pitches[1] * GST_ROUND_UP_2 (padded_height) / 2;
pitches[2] = GST_ROUND_UP_8 (pitches[0]) / 2;
expected_size =
offsets[2] + pitches[2] * GST_ROUND_UP_2 (padded_height) / 2;
for (plane = 0; plane < mem->xvimage->num_planes; plane++) {
GST_DEBUG_OBJECT (allocator,
"Plane %u has a expected pitch of %d bytes, " "offset of %d",
plane, pitches[plane], offsets[plane]);
}
break;
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
}
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
expected_size = padded_height * GST_ROUND_UP_4 (padded_width * 2);
break;
default:
break;
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
}
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
} else if (GST_VIDEO_FORMAT_INFO_IS_RGB (info->finfo) &&
GST_VIDEO_FORMAT_INFO_N_PLANES (info->finfo) == 1) {
expected_size = padded_height * GST_ROUND_UP_4 (padded_width *
GST_VIDEO_FORMAT_INFO_PSTRIDE (info->finfo, 0));
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
}
xvimagesink: only error out if the allocated memory is too small https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-18 13:20:11 +00:00
if (expected_size != 0 && mem->xvimage->data_size < expected_size)
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
goto unexpected_size;
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
/* Be verbose about our XvImage stride */
{
guint plane;
for (plane = 0; plane < mem->xvimage->num_planes; plane++) {
GST_DEBUG_OBJECT (allocator, "Plane %u has a pitch of %d bytes, "
"offset of %d", plane, mem->xvimage->pitches[plane],
mem->xvimage->offsets[plane]);
}
}
/* get shared memory */
xvimagsink: fix failure to allocate large shared memory blocks A previous patch increased allocations by 15 bytes in order to ensure 16 byte alignment for g_malloc blocks. However, shared memory is already block aligned, and this extra 15 bytes caused allocation to fail when we were already allocating to the shared memory limit, which is a lot smaller than typical available RAM. Fix this by removing the alignment slack when allocating shared memory. https://bugzilla.gnome.org/show_bug.cgi?id=706066
2014-04-04 11:32:14 +00:00
align = 0;
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
mem->SHMInfo.shmid =
xvimagsink: fix failure to allocate large shared memory blocks A previous patch increased allocations by 15 bytes in order to ensure 16 byte alignment for g_malloc blocks. However, shared memory is already block aligned, and this extra 15 bytes caused allocation to fail when we were already allocating to the shared memory limit, which is a lot smaller than typical available RAM. Fix this by removing the alignment slack when allocating shared memory. https://bugzilla.gnome.org/show_bug.cgi?id=706066
2014-04-04 11:32:14 +00:00
shmget (IPC_PRIVATE, mem->xvimage->data_size, IPC_CREAT | 0777);
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
if (mem->SHMInfo.shmid == -1)
goto shmget_failed;
/* attach */
mem->SHMInfo.shmaddr = shmat (mem->SHMInfo.shmid, NULL, 0);
if (mem->SHMInfo.shmaddr == ((void *) -1))
goto shmat_failed;
/* now we can set up the image data */
mem->xvimage->data = mem->SHMInfo.shmaddr;
mem->SHMInfo.readOnly = FALSE;
if (XShmAttach (context->disp, &mem->SHMInfo) == 0)
goto xattach_failed;
XSync (context->disp, FALSE);
/* Delete the shared memory segment as soon as we everyone is attached.
* This way, it will be deleted as soon as we detach later, and not
* leaked if we crash. */
shmctl (mem->SHMInfo.shmid, IPC_RMID, NULL);
GST_DEBUG_OBJECT (allocator, "XServer ShmAttached to 0x%x, id 0x%lx",
mem->SHMInfo.shmid, mem->SHMInfo.shmseg);
} else
no_xshm:
#endif /* HAVE_XSHM */
{
mem->xvimage = XvCreateImage (context->disp,
context->xv_port_id, im_format, NULL, padded_width, padded_height);
if (!mem->xvimage || error_caught)
goto create_failed;
/* we have to use the returned data_size for our image size */
xvimagsink: fix failure to allocate large shared memory blocks A previous patch increased allocations by 15 bytes in order to ensure 16 byte alignment for g_malloc blocks. However, shared memory is already block aligned, and this extra 15 bytes caused allocation to fail when we were already allocating to the shared memory limit, which is a lot smaller than typical available RAM. Fix this by removing the alignment slack when allocating shared memory. https://bugzilla.gnome.org/show_bug.cgi?id=706066
2014-04-04 11:32:14 +00:00
align = 15; /* g_malloc aligns to 8, we need 16 */
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
mem->xvimage->data = g_malloc (mem->xvimage->data_size + align);
XSync (context->disp, FALSE);
}
if ((offset = ((guintptr) mem->xvimage->data & align)))
offset = (align + 1) - offset;
GST_DEBUG_OBJECT (allocator, "memory %p, align %d, offset %d",
mem->xvimage->data, align, offset);
/* Reset error handler */
error_caught = FALSE;
XSetErrorHandler (handler);
gst_memory_init (GST_MEMORY_CAST (mem), 0,
GST_ALLOCATOR_CAST (allocator), NULL, mem->xvimage->data_size + align,
align, offset, mem->xvimage->data_size);
g_mutex_unlock (&context->lock);
success = TRUE;
beach:
if (!success) {
g_slice_free (GstXvImageMemory, mem);
mem = NULL;
}
return GST_MEMORY_CAST (mem);
/* ERRORS */
xvimagesink: error out on buffer size sanity check failure. If sanity checks on the buffer size allocated by XvShmCreateImage() fail, call on g_set_error(), rather than just logging a warning, as this failure is fatal. Add a sanity check on buffer size when the video format is RGB. This adds to existing checks on various YUV pixel formats. https://bugzilla.gnome.org/show_bug.cgi?id=767712
2016-07-07 12:27:15 +00:00
unexpected_size:
{
g_mutex_unlock (&context->lock);
g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_WRITE,
"unexpected XShm image size (got %d, expected %d)",
mem->xvimage->data_size, expected_size);
goto beach;
}
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
create_failed:
{
g_mutex_unlock (&context->lock);
/* Reset error handler */
error_caught = FALSE;
XSetErrorHandler (handler);
/* Push an error */
g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_WRITE,
"could not XvShmCreateImage a %dx%d image", padded_width,
padded_height);
goto beach;
}
#ifdef HAVE_XSHM
shmget_failed:
{
g_mutex_unlock (&context->lock);
g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_WRITE,
"could not get shared memory of %d bytes", mem->xvimage->data_size);
goto beach;
}
shmat_failed:
{
g_mutex_unlock (&context->lock);
g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_WRITE,
"Failed to shmat: %s", g_strerror (errno));
/* Clean up the shared memory segment */
shmctl (mem->SHMInfo.shmid, IPC_RMID, NULL);
goto beach;
}
xattach_failed:
{
/* Clean up the shared memory segment */
shmctl (mem->SHMInfo.shmid, IPC_RMID, NULL);
g_mutex_unlock (&context->lock);
g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_WRITE,
"Failed to XShmAttach");
goto beach;
}
#endif
}
/* We are called with the x_lock taken */
static void
gst_xwindow_draw_borders (GstXWindow * window, GstVideoRectangle * rect)
{
gint t1, t2;
GstXvContext *context;
g_return_if_fail (window != NULL);
g_return_if_fail (rect != NULL);
context = window->context;
XSetForeground (context->disp, window->gc, context->black);
/* Left border */
if (rect->x > window->render_rect.x) {
XFillRectangle (context->disp, window->win, window->gc,
window->render_rect.x, window->render_rect.y,
rect->x - window->render_rect.x, window->render_rect.h);
}
/* Right border */
t1 = rect->x + rect->w;
t2 = window->render_rect.x + window->render_rect.w;
if (t1 < t2) {
XFillRectangle (context->disp, window->win, window->gc,
t1, window->render_rect.y, t2 - t1, window->render_rect.h);
}
/* Top border */
if (rect->y > window->render_rect.y) {
XFillRectangle (context->disp, window->win, window->gc,
window->render_rect.x, window->render_rect.y,
window->render_rect.w, rect->y - window->render_rect.y);
}
/* Bottom border */
t1 = rect->y + rect->h;
t2 = window->render_rect.y + window->render_rect.h;
if (t1 < t2) {
XFillRectangle (context->disp, window->win, window->gc,
window->render_rect.x, t1, window->render_rect.w, t2 - t1);
}
}
void
gst_xvimage_memory_render (GstXvImageMemory * mem, GstVideoRectangle * src_crop,
GstXWindow * window, GstVideoRectangle * dst_crop, gboolean draw_border)
{
GstXvContext *context;
XvImage *xvimage;
context = window->context;
g_mutex_lock (&context->lock);
xvimage = gst_xvimage_memory_get_xvimage (mem);
if (draw_border) {
gst_xwindow_draw_borders (window, dst_crop);
}
#ifdef HAVE_XSHM
if (context->use_xshm) {
xvimage: fix crash when outputting debug log Can't print a GstMemory via GST_PTR_FORMAT, it will crash inside GObject checking if it's a GObject, and we can't check generically whether it's a derived GstMemory type, as boxed types don't allowe derivation.
2014-08-10 16:27:14 +00:00
GST_LOG ("XvShmPutImage with image %dx%d and window %dx%d, from xvimage %p",
src_crop->w, src_crop->h, window->render_rect.w, window->render_rect.h,
mem);
xvimagesink: use xvcontext for allocation Make a new refcounted xvcontext object that handles the X connection. Use the xvcontext to allocate images and windows. Move some code around so that all X calls are made from the xvcontext object. Make a GstXvImageAllocator object that allocates images from the xvcontext. We can implement a copy function now for these memory objects now. Make the bufferpool use the xvimageallocator object for its images.
2013-03-13 10:13:58 +00:00
XvShmPutImage (context->disp,
context->xv_port_id,
window->win,
window->gc, xvimage,
src_crop->x, src_crop->y, src_crop->w, src_crop->h,
dst_crop->x, dst_crop->y, dst_crop->w, dst_crop->h, FALSE);
} else
#endif /* HAVE_XSHM */
{
XvPutImage (context->disp,
context->xv_port_id,
window->win,
window->gc, xvimage,
src_crop->x, src_crop->y, src_crop->w, src_crop->h,
dst_crop->x, dst_crop->y, dst_crop->w, dst_crop->h);
}
XSync (context->disp, FALSE);
g_mutex_unlock (&context->lock);
}
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