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metadata: use metadata for private buffer data

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Use buffer metadata to store element private data.
This commit is contained in:
Wim Taymans 2011-02-25 16:29:38 +01:00
parent d90a388289
commit f229f4d192
7 changed files with 168 additions and 125 deletions
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54
gst/debugutils/efence.c
View file

@ -84,11 +84,32 @@ static gboolean gst_efence_activate_src_pull (GstPad * pad, gboolean active);
static GstElementClass *parent_class = NULL;
typedef struct _GstFencedData
typedef struct _GstMetaFenced
{
GstMeta meta;
void *region;
unsigned int length;
} GstFencedData;
} GstMetaFenced;
static const GstMetaInfo *
gst_meta_fenced_get_info (void)
{
static const GstMetaInfo *meta_fenced_info = NULL;
if (meta_fenced_info == NULL) {
meta_fenced_info = gst_meta_register ("GstMetaFenced", "GstMetaFenced",
sizeof (GstMetaFenced),
(GstMetaInitFunction) NULL,
(GstMetaFreeFunction) NULL,
(GstMetaCopyFunction) NULL,
(GstMetaSubFunction) NULL,
(GstMetaSerializeFunction) NULL, (GstMetaDeserializeFunction) NULL);
}
return meta_fenced_info;
}
#define GST_META_FENCED_GET(buf,create) ((GstMetaFenced *)gst_buffer_get_meta(buf,gst_meta_fenced_get_info(),create));
static void gst_fenced_buffer_dispose (GstBuffer * buf);
static GstBuffer *gst_fenced_buffer_copy (const GstBuffer * buffer);
@ -99,8 +120,6 @@ static GstFlowReturn gst_efence_buffer_alloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf);
#endif
#define GET_FENCED_DATA(buf) ((GstFencedData *) (GST_BUFFER_CAST(buf)->owner_priv))
GType
gst_gst_efence_get_type (void)
{
@ -379,19 +398,17 @@ GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
static void
gst_fenced_buffer_dispose (GstBuffer * buffer)
{
GstFencedData *data;
GstMetaFenced *meta;
data = GET_FENCED_DATA (buffer);
meta = GST_META_FENCED_GET (buffer, FALSE);
GST_DEBUG ("free buffer=%p", buffer);
/* free our data */
if (GST_BUFFER_DATA (buffer)) {
GST_DEBUG ("free region %p %d", data->region, data->length);
munmap (data->region, data->length);
GST_DEBUG ("free region %p %d", meta->region, meta->length);
munmap (meta->region, meta->length);
}
g_slice_free (GstFencedData, data);
buffer->owner_priv = NULL;
}
static GstBuffer *
@ -440,7 +457,7 @@ gst_fenced_buffer_alloc (GstBuffer * buffer, unsigned int length,
{
int alloc_size;
void *region;
GstFencedData *data;
GstMetaFenced *meta;
int page_size;
GST_DEBUG ("buffer=%p length=%d fence_top=%d", buffer, length, fence_top);
@ -448,7 +465,6 @@ gst_fenced_buffer_alloc (GstBuffer * buffer, unsigned int length,
if (length == 0)
return NULL;
#ifdef _SC_PAGESIZE
page_size = sysconf (_SC_PAGESIZE);
#else
@ -466,28 +482,28 @@ gst_fenced_buffer_alloc (GstBuffer * buffer, unsigned int length,
return NULL;
}
data = g_slice_new (GstFencedData);
buffer->owner_priv = data;
GST_MINI_OBJECT_CAST (buffer)->dispose =
(GstMiniObjectDisposeFunction) gst_fenced_buffer_dispose;
GST_MINI_OBJECT_CAST (buffer)->copy =
(GstMiniObjectCopyFunction) gst_fenced_buffer_copy;
meta = GST_META_FENCED_GET (buffer, TRUE);
#if 0
munmap (region, page_size);
munmap (region + alloc_size - page_size, page_size);
data->region = region + page_size;
data->length = alloc_size - page_size;
meta->region = region + page_size;
meta->length = alloc_size - page_size;
#else
mprotect (region, page_size, PROT_NONE);
mprotect ((char *) region + alloc_size - page_size, page_size, PROT_NONE);
data->region = region;
data->length = alloc_size;
meta->region = region;
meta->length = alloc_size;
#endif
GST_DEBUG ("new region %p %d", data->region, data->length);
GST_DEBUG ("new region %p %d", meta->region, meta->length);
if (fence_top) {
int offset;

71
sys/v4l2/gstv4l2bufferpool.c
View file

@ -59,17 +59,16 @@ GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
static void
gst_v4l2_buffer_dispose (GstBuffer * buffer)
{
GstV4l2Data *data;
GstV4l2BufferPool *pool;
gboolean resuscitated = FALSE;
gint index;
GstMetaV4l2 *meta;
data = GST_V4L2_GET_DATA (buffer);
g_assert (data != NULL);
meta = GST_META_V4L2_GET (buffer, FALSE);
g_assert (meta != NULL);
pool = data->pool;
index = data->vbuffer.index;
pool = meta->pool;
index = meta->vbuffer.index;
GST_LOG_OBJECT (pool->v4l2elem, "finalizing buffer %p %d", buffer, index);
@ -106,61 +105,59 @@ gst_v4l2_buffer_dispose (GstBuffer * buffer)
if (!resuscitated) {
GST_LOG_OBJECT (pool->v4l2elem,
"buffer %p (data %p, len %u) not recovered, unmapping",
buffer, GST_BUFFER_DATA (buffer), data->vbuffer.length);
v4l2_munmap ((void *) GST_BUFFER_DATA (buffer), data->vbuffer.length);
buffer, GST_BUFFER_DATA (buffer), meta->vbuffer.length);
v4l2_munmap ((void *) GST_BUFFER_DATA (buffer), meta->vbuffer.length);
g_object_unref (pool);
g_slice_free (GstV4l2Data, data);
buffer->owner_priv = NULL;
}
}
static GstBuffer *
gst_v4l2_buffer_new (GstV4l2BufferPool * pool, guint index, GstCaps * caps)
{
GstV4l2Data *data;
GstBuffer *ret;
guint8 *mem;
GstMetaV4l2 *meta;
ret = gst_buffer_new ();
data = g_slice_new (GstV4l2Data);
ret->owner_priv = data;
GST_MINI_OBJECT_CAST (ret)->dispose =
(GstMiniObjectDisposeFunction) gst_v4l2_buffer_dispose;
meta = GST_META_V4L2_GET (ret, TRUE);
GST_LOG_OBJECT (pool->v4l2elem, "creating buffer %u, %p in pool %p", index,
ret, pool);
data->pool = (GstV4l2BufferPool *) g_object_ref (pool);
meta->pool = (GstV4l2BufferPool *) g_object_ref (pool);
data->vbuffer.index = index;
data->vbuffer.type = pool->type;
data->vbuffer.memory = V4L2_MEMORY_MMAP;
meta->vbuffer.index = index;
meta->vbuffer.type = pool->type;
meta->vbuffer.memory = V4L2_MEMORY_MMAP;
if (v4l2_ioctl (pool->video_fd, VIDIOC_QUERYBUF, &data->vbuffer) < 0)
if (v4l2_ioctl (pool->video_fd, VIDIOC_QUERYBUF, &meta->vbuffer) < 0)
goto querybuf_failed;
GST_LOG_OBJECT (pool->v4l2elem, " index: %u", data->vbuffer.index);
GST_LOG_OBJECT (pool->v4l2elem, " type: %d", data->vbuffer.type);
GST_LOG_OBJECT (pool->v4l2elem, " bytesused: %u", data->vbuffer.bytesused);
GST_LOG_OBJECT (pool->v4l2elem, " flags: %08x", data->vbuffer.flags);
GST_LOG_OBJECT (pool->v4l2elem, " field: %d", data->vbuffer.field);
GST_LOG_OBJECT (pool->v4l2elem, " memory: %d", data->vbuffer.memory);
if (data->vbuffer.memory == V4L2_MEMORY_MMAP)
GST_LOG_OBJECT (pool->v4l2elem, " index: %u", meta->vbuffer.index);
GST_LOG_OBJECT (pool->v4l2elem, " type: %d", meta->vbuffer.type);
GST_LOG_OBJECT (pool->v4l2elem, " bytesused: %u", meta->vbuffer.bytesused);
GST_LOG_OBJECT (pool->v4l2elem, " flags: %08x", meta->vbuffer.flags);
GST_LOG_OBJECT (pool->v4l2elem, " field: %d", meta->vbuffer.field);
GST_LOG_OBJECT (pool->v4l2elem, " memory: %d", meta->vbuffer.memory);
if (meta->vbuffer.memory == V4L2_MEMORY_MMAP)
GST_LOG_OBJECT (pool->v4l2elem, " MMAP offset: %u",
data->vbuffer.m.offset);
GST_LOG_OBJECT (pool->v4l2elem, " length: %u", data->vbuffer.length);
GST_LOG_OBJECT (pool->v4l2elem, " input: %u", data->vbuffer.input);
meta->vbuffer.m.offset);
GST_LOG_OBJECT (pool->v4l2elem, " length: %u", meta->vbuffer.length);
GST_LOG_OBJECT (pool->v4l2elem, " input: %u", meta->vbuffer.input);
mem = (guint8 *) v4l2_mmap (0, data->vbuffer.length,
mem = (guint8 *) v4l2_mmap (0, meta->vbuffer.length,
PROT_READ | PROT_WRITE, MAP_SHARED, pool->video_fd,
data->vbuffer.m.offset);
meta->vbuffer.m.offset);
if (mem == MAP_FAILED)
goto mmap_failed;
GST_BUFFER_DATA (ret) = mem;
GST_BUFFER_SIZE (ret) = data->vbuffer.length;
GST_BUFFER_SIZE (ret) = meta->vbuffer.length;
GST_BUFFER_FLAG_SET (ret, GST_BUFFER_FLAG_READONLY);
@ -454,8 +451,10 @@ gst_v4l2_buffer_pool_get (GstV4l2BufferPool * pool, gboolean blocking)
}
if (buf) {
GstMetaV4l2 *meta = GST_META_V4L2_GET (buf, FALSE);
GST_V4L2_BUFFER_POOL_LOCK (pool);
GST_BUFFER_SIZE (buf) = GST_V4L2_GET_DATA (buf)->vbuffer.length;
GST_BUFFER_SIZE (buf) = meta->vbuffer.length;
GST_BUFFER_FLAG_UNSET (buf, 0xffffffff);
GST_V4L2_BUFFER_POOL_UNLOCK (pool);
}
@ -478,12 +477,14 @@ gst_v4l2_buffer_pool_get (GstV4l2BufferPool * pool, gboolean blocking)
gboolean
gst_v4l2_buffer_pool_qbuf (GstV4l2BufferPool * pool, GstBuffer * buf)
{
GstV4l2Data *data = GST_V4L2_GET_DATA (buf);
GstMetaV4l2 *meta;
meta = GST_META_V4L2_GET (buf, FALSE);
GST_LOG_OBJECT (pool->v4l2elem, "enqueue pool buffer %d",
data->vbuffer.index);
meta->vbuffer.index);
if (v4l2_ioctl (pool->video_fd, VIDIOC_QBUF, &data->vbuffer) < 0)
if (v4l2_ioctl (pool->video_fd, VIDIOC_QBUF, &meta->vbuffer) < 0)
return FALSE;
pool->num_live_buffers--;

9
sys/v4l2/gstv4l2bufferpool.h
View file

@ -46,7 +46,7 @@ GType gst_v4l2_buffer_pool_get_type (void);
typedef struct _GstV4l2BufferPool GstV4l2BufferPool;
typedef struct _GstV4l2Data GstV4l2Data;
typedef struct _GstMetaV4l2 GstMetaV4l2;
struct _GstV4l2BufferPool
@ -66,9 +66,9 @@ struct _GstV4l2BufferPool
GstBuffer **buffers;
};
#define GST_V4L2_GET_DATA(buf) ((GstV4l2Data *) (GST_BUFFER_CAST (buf)->owner_priv))
struct _GstMetaV4l2 {
GstMeta meta;
struct _GstV4l2Data {
struct v4l2_buffer vbuffer;
/* FIXME: have GstV4l2Src* instead, as this has GstV4l2BufferPool* */
@ -78,6 +78,9 @@ struct _GstV4l2Data {
GstV4l2BufferPool *pool;
};
const GstMetaInfo * gst_meta_v4l2_get_info (void);
#define GST_META_V4L2_GET(buf,create) ((GstMetaV4l2 *)gst_buffer_get_meta(buf,gst_meta_v4l2_get_info(),create))
void gst_v4l2_buffer_pool_destroy (GstV4l2BufferPool * pool);
GstV4l2BufferPool *gst_v4l2_buffer_pool_new (GstElement *v4l2elem, gint fd, gint num_buffers, GstCaps * caps, gboolean requeuebuf, enum v4l2_buf_type type);

2
sys/v4l2/v4l2src_calls.c
View file

@ -81,7 +81,7 @@ queue_failed:
(_("Could not enqueue buffers in device '%s'."),
v4l2src->v4l2object->videodev),
("enqueing buffer %d/%d failed: %s",
GST_V4L2_GET_DATA (buf)->vbuffer.index, v4l2src->num_buffers,
GST_META_V4L2_GET (buf, FALSE)->vbuffer.index, v4l2src->num_buffers,
g_strerror (errno)));
return FALSE;
}

33
sys/ximage/gstximagesrc.c
View file

@ -82,16 +82,15 @@ static void gst_ximage_src_clear_bufpool (GstXImageSrc * ximagesrc);
static void
gst_ximage_src_return_buf (GstXImageSrc * ximagesrc, GstBuffer * ximage)
{
GstXImageData *data = GST_XIMAGE_GET_DATA (ximage);
GstMetaXImage *meta = GST_META_XIMAGE_GET (ximage, FALSE);
/* If our geometry changed we can't reuse that image. */
if ((data->width != ximagesrc->width) || (data->height != ximagesrc->height)) {
if ((meta->width != ximagesrc->width) || (meta->height != ximagesrc->height)) {
GST_DEBUG_OBJECT (ximagesrc,
"destroy image %p as its size changed %dx%d vs current %dx%d",
ximage, data->width, data->height, ximagesrc->width, ximagesrc->height);
ximage, meta->width, meta->height, ximagesrc->width, ximagesrc->height);
g_mutex_lock (ximagesrc->x_lock);
gst_ximageutil_ximage_destroy (ximagesrc->xcontext, ximage);
g_slice_free (GstXImageData, data);
g_mutex_unlock (ximagesrc->x_lock);
} else {
/* In that case we can reuse the image and add it to our image pool. */
@ -362,16 +361,16 @@ static GstBuffer *
gst_ximage_src_ximage_get (GstXImageSrc * ximagesrc)
{
GstBuffer *ximage = NULL;
GstXImageData *data;
GstMetaXImage *meta;
g_mutex_lock (ximagesrc->pool_lock);
while (ximagesrc->buffer_pool != NULL) {
ximage = ximagesrc->buffer_pool->data;
data = GST_XIMAGE_GET_DATA (ximage);
meta = GST_META_XIMAGE_GET (ximage, FALSE);
if ((data->width != ximagesrc->width) ||
(data->height != ximagesrc->height)) {
if ((meta->width != ximagesrc->width) ||
(meta->height != ximagesrc->height)) {
gst_ximage_buffer_free (ximage);
}
@ -424,7 +423,7 @@ gst_ximage_src_ximage_get (GstXImageSrc * ximagesrc)
g_return_val_if_fail (GST_IS_XIMAGE_SRC (ximagesrc), NULL);
data = GST_XIMAGE_GET_DATA (ximage);
meta = GST_META_XIMAGE_GET (ximage, FALSE);
#ifdef HAVE_XDAMAGE
if (ximagesrc->have_xdamage && ximagesrc->use_damage &&
@ -498,7 +497,7 @@ gst_ximage_src_ximage_get (GstXImageSrc * ximagesrc)
startx, starty, width, height);
XGetSubImage (ximagesrc->xcontext->disp, ximagesrc->xwindow,
startx, starty, width, height, AllPlanes, ZPixmap,
data->ximage, startx - ximagesrc->startx,
meta->ximage, startx - ximagesrc->startx,
starty - ximagesrc->starty);
}
} else {
@ -510,7 +509,7 @@ gst_ximage_src_ximage_get (GstXImageSrc * ximagesrc)
XGetSubImage (ximagesrc->xcontext->disp, ximagesrc->xwindow,
rects[i].x, rects[i].y,
rects[i].width, rects[i].height,
AllPlanes, ZPixmap, data->ximage, rects[i].x, rects[i].y);
AllPlanes, ZPixmap, meta->ximage, rects[i].x, rects[i].y);
}
}
free (rects);
@ -572,14 +571,14 @@ gst_ximage_src_ximage_get (GstXImageSrc * ximagesrc)
GST_DEBUG_OBJECT (ximagesrc, "Removing cursor from %d,%d", x, y);
XGetSubImage (ximagesrc->xcontext->disp, ximagesrc->xwindow,
startx, starty, iwidth, iheight, AllPlanes, ZPixmap,
data->ximage, startx - ximagesrc->startx,
meta->ximage, startx - ximagesrc->startx,
starty - ximagesrc->starty);
}
} else {
GST_DEBUG_OBJECT (ximagesrc, "Removing cursor from %d,%d", x, y);
XGetSubImage (ximagesrc->xcontext->disp, ximagesrc->xwindow,
x, y, width, height, AllPlanes, ZPixmap, data->ximage, x, y);
x, y, width, height, AllPlanes, ZPixmap, meta->ximage, x, y);
}
}
#endif
@ -592,7 +591,7 @@ gst_ximage_src_ximage_get (GstXImageSrc * ximagesrc)
if (ximagesrc->xcontext->use_xshm) {
GST_DEBUG_OBJECT (ximagesrc, "Retrieving screen using XShm");
XShmGetImage (ximagesrc->xcontext->disp, ximagesrc->xwindow,
data->ximage, ximagesrc->startx, ximagesrc->starty, AllPlanes);
meta->ximage, ximagesrc->startx, ximagesrc->starty, AllPlanes);
} else
#endif /* HAVE_XSHM */
@ -601,9 +600,9 @@ gst_ximage_src_ximage_get (GstXImageSrc * ximagesrc)
if (ximagesrc->remote) {
XGetSubImage (ximagesrc->xcontext->disp, ximagesrc->xwindow,
ximagesrc->startx, ximagesrc->starty, ximagesrc->width,
ximagesrc->height, AllPlanes, ZPixmap, data->ximage, 0, 0);
ximagesrc->height, AllPlanes, ZPixmap, meta->ximage, 0, 0);
} else {
data->ximage =
meta->ximage =
XGetImage (ximagesrc->xcontext->disp, ximagesrc->xwindow,
ximagesrc->startx, ximagesrc->starty, ximagesrc->width,
ximagesrc->height, AllPlanes, ZPixmap);
@ -683,7 +682,7 @@ gst_ximage_src_ximage_get (GstXImageSrc * ximagesrc)
(guint8 *) & (ximagesrc->cursor_image->pixels[((j -
cy) * ximagesrc->cursor_image->width + (i - cx))]);
dest =
(guint8 *) & (data->ximage->data[((j -
(guint8 *) & (meta->ximage->data[((j -
ximagesrc->starty) * ximagesrc->width + (i -
ximagesrc->startx)) * (ximagesrc->xcontext->bpp /
8)]);

114
sys/ximage/ximageutil.c
View file

@ -23,6 +23,22 @@
#include "ximageutil.h"
const GstMetaInfo *
gst_meta_ximage_get_info (void)
{
static const GstMetaInfo *meta_ximage_info = NULL;
if (meta_ximage_info == NULL) {
meta_ximage_info =
gst_meta_register ("GstMetaXImageSrc", "GstMetaXImageSrc",
sizeof (GstMetaXImage), (GstMetaInitFunction) NULL,
(GstMetaFreeFunction) NULL, (GstMetaCopyFunction) NULL,
(GstMetaSubFunction) NULL, (GstMetaSerializeFunction) NULL,
(GstMetaDeserializeFunction) NULL);
}
return meta_ximage_info;
}
#ifdef HAVE_XSHM
static gboolean error_caught = FALSE;
@ -300,18 +316,20 @@ static void
gst_ximagesrc_buffer_dispose (GstBuffer * ximage)
{
GstElement *parent;
GstXImageData *data = GST_XIMAGE_GET_DATA (ximage);
GstMetaXImage *meta;
g_return_if_fail (ximage != NULL);
parent = data->parent;
meta = GST_META_XIMAGE_GET (ximage, FALSE);
parent = meta->parent;
if (parent == NULL) {
g_warning ("XImageSrcBuffer->ximagesrc == NULL");
goto beach;
}
if (data->return_func)
data->return_func (parent, ximage);
if (meta->return_func)
meta->return_func (parent, ximage);
beach:
return;
@ -320,10 +338,13 @@ beach:
void
gst_ximage_buffer_free (GstBuffer * ximage)
{
GstXImageData *data = GST_XIMAGE_GET_DATA (ximage);
GstMetaXImage *meta;
meta = GST_META_XIMAGE_GET (ximage, FALSE);
/* make sure it is not recycled */
data->width = -1;
data->height = -1;
meta->width = -1;
meta->height = -1;
gst_buffer_unref (ximage);
}
@ -333,75 +354,74 @@ gst_ximageutil_ximage_new (GstXContext * xcontext,
GstElement * parent, int width, int height, BufferReturnFunc return_func)
{
GstBuffer *ximage = NULL;
GstXImageData *data;
GstMetaXImage *meta;
gboolean succeeded = FALSE;
ximage = gst_buffer_new ();
data = g_slice_new (GstXImageData);
ximage->owner_priv = data;
GST_MINI_OBJECT_CAST (ximage)->dispose =
(GstMiniObjectDisposeFunction) gst_ximagesrc_buffer_dispose;
data->width = width;
data->height = height;
meta = GST_META_XIMAGE_GET (ximage, TRUE);
meta->width = width;
meta->height = height;
#ifdef HAVE_XSHM
data->SHMInfo.shmaddr = ((void *) -1);
data->SHMInfo.shmid = -1;
meta->SHMInfo.shmaddr = ((void *) -1);
meta->SHMInfo.shmid = -1;
if (xcontext->use_xshm) {
data->ximage = XShmCreateImage (xcontext->disp,
meta->ximage = XShmCreateImage (xcontext->disp,
xcontext->visual, xcontext->depth,
ZPixmap, NULL, &data->SHMInfo, data->width, data->height);
if (!data->ximage) {
ZPixmap, NULL, &meta->SHMInfo, meta->width, meta->height);
if (!meta->ximage) {
goto beach;
}
/* we have to use the returned bytes_per_line for our shm size */
data->size = data->ximage->bytes_per_line * data->ximage->height;
data->SHMInfo.shmid = shmget (IPC_PRIVATE, data->size, IPC_CREAT | 0777);
if (data->SHMInfo.shmid == -1)
meta->size = meta->ximage->bytes_per_line * meta->ximage->height;
meta->SHMInfo.shmid = shmget (IPC_PRIVATE, meta->size, IPC_CREAT | 0777);
if (meta->SHMInfo.shmid == -1)
goto beach;
data->SHMInfo.shmaddr = shmat (data->SHMInfo.shmid, 0, 0);
if (data->SHMInfo.shmaddr == ((void *) -1))
meta->SHMInfo.shmaddr = shmat (meta->SHMInfo.shmid, 0, 0);
if (meta->SHMInfo.shmaddr == ((void *) -1))
goto beach;
/* Delete the SHM segment. It will actually go away automatically
* when we detach now */
shmctl (data->SHMInfo.shmid, IPC_RMID, 0);
shmctl (meta->SHMInfo.shmid, IPC_RMID, 0);
data->ximage->data = data->SHMInfo.shmaddr;
data->SHMInfo.readOnly = FALSE;
meta->ximage->data = meta->SHMInfo.shmaddr;
meta->SHMInfo.readOnly = FALSE;
if (XShmAttach (xcontext->disp, &data->SHMInfo) == 0)
if (XShmAttach (xcontext->disp, &meta->SHMInfo) == 0)
goto beach;
XSync (xcontext->disp, FALSE);
} else
#endif /* HAVE_XSHM */
{
data->ximage = XCreateImage (xcontext->disp,
meta->ximage = XCreateImage (xcontext->disp,
xcontext->visual,
xcontext->depth,
ZPixmap, 0, NULL, data->width, data->height, xcontext->bpp, 0);
if (!data->ximage)
ZPixmap, 0, NULL, meta->width, meta->height, xcontext->bpp, 0);
if (!meta->ximage)
goto beach;
/* we have to use the returned bytes_per_line for our image size */
data->size = data->ximage->bytes_per_line * data->ximage->height;
data->ximage->data = g_malloc (data->size);
meta->size = meta->ximage->bytes_per_line * meta->ximage->height;
meta->ximage->data = g_malloc (meta->size);
XSync (xcontext->disp, FALSE);
}
succeeded = TRUE;
GST_BUFFER_DATA (ximage) = (guchar *) data->ximage->data;
GST_BUFFER_SIZE (ximage) = data->size;
GST_BUFFER_DATA (ximage) = (guchar *) meta->ximage->data;
GST_BUFFER_SIZE (ximage) = meta->size;
/* Keep a ref to our src */
data->parent = gst_object_ref (parent);
data->return_func = return_func;
meta->parent = gst_object_ref (parent);
meta->return_func = return_func;
beach:
if (!succeeded) {
gst_ximage_buffer_free (ximage);
@ -415,9 +435,9 @@ beach:
void
gst_ximageutil_ximage_destroy (GstXContext * xcontext, GstBuffer * ximage)
{
GstXImageData *data;
GstMetaXImage *meta;
data = GST_XIMAGE_GET_DATA (ximage);
meta = GST_META_XIMAGE_GET (ximage, FALSE);
/* We might have some buffers destroyed after changing state to NULL */
if (!xcontext)
@ -427,28 +447,28 @@ gst_ximageutil_ximage_destroy (GstXContext * xcontext, GstBuffer * ximage)
#ifdef HAVE_XSHM
if (xcontext->use_xshm) {
if (data->SHMInfo.shmaddr != ((void *) -1)) {
XShmDetach (xcontext->disp, &data->SHMInfo);
if (meta->SHMInfo.shmaddr != ((void *) -1)) {
XShmDetach (xcontext->disp, &meta->SHMInfo);
XSync (xcontext->disp, 0);
shmdt (data->SHMInfo.shmaddr);
shmdt (meta->SHMInfo.shmaddr);
}
if (data->ximage)
XDestroyImage (data->ximage);
if (meta->ximage)
XDestroyImage (meta->ximage);
} else
#endif /* HAVE_XSHM */
{
if (data->ximage) {
XDestroyImage (data->ximage);
if (meta->ximage) {
XDestroyImage (meta->ximage);
}
}
XSync (xcontext->disp, FALSE);
beach:
if (data->parent) {
if (meta->parent) {
/* Release the ref to our parent */
gst_object_unref (data->parent);
data->parent = NULL;
gst_object_unref (meta->parent);
meta->parent = NULL;
}
return;

10
sys/ximage/ximageutil.h
View file

@ -43,7 +43,7 @@ G_BEGIN_DECLS
typedef struct _GstXContext GstXContext;
typedef struct _GstXWindow GstXWindow;
typedef struct _GstXImage GstXImage;
typedef struct _GstXImageData GstXImageData;
typedef struct _GstMetaXImage GstMetaXImage;
/* Global X Context stuff */
/**
@ -134,7 +134,7 @@ typedef void (*BufferReturnFunc) (GstElement *parent, GstBuffer *buf);
#define GST_XIMAGE_GET_DATA(buf) ((GstXImageData *) (GST_BUFFER_CAST(buf)->owner_priv))
/**
* GstXImageData:
* GstMetaXImage:
* @parent: a reference to the element we belong to
* @ximage: the XImage of this buffer
* @width: the width in pixels of XImage @ximage
@ -143,7 +143,9 @@ typedef void (*BufferReturnFunc) (GstElement *parent, GstBuffer *buf);
*
* Extra data attached to buffers containing additional information about an XImage.
*/
struct _GstXImageData {
struct _GstMetaXImage {
GstMeta meta;
/* Reference to the ximagesrc we belong to */
GstElement *parent;
@ -159,6 +161,8 @@ struct _GstXImageData {
BufferReturnFunc return_func;
};
const GstMetaInfo * gst_meta_ximage_get_info (void);
#define GST_META_XIMAGE_GET(buf,create) ((GstMetaXImage *)gst_buffer_get_meta(buf,gst_meta_ximage_get_info(),create));
GstBuffer *gst_ximageutil_ximage_new (GstXContext *xcontext,
GstElement *parent, int width, int height, BufferReturnFunc return_func);