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metadata: implement extra buffer data with metadata

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Use buffer metadata to attach arbitrary extra data to buffers.
This commit is contained in:
Wim Taymans 2011-02-25 15:49:33 +01:00
parent 5e6339b055
commit 55c9ca592f
5 changed files with 185 additions and 132 deletions
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50
sys/v4l/v4lsrc_calls.c
View file

@ -616,23 +616,24 @@ gst_v4lsrc_get_fps_list (GstV4lSrc * v4lsrc)
}
}
#define GET_V4LSRC_DATA(buf) ((GstV4lSrcData *) (GST_BUFFER_CAST(buf)->owner_priv))
typedef struct _GstV4lSrcData
typedef struct _GstMetaV4lSrc
{
GstMeta meta;
GstV4lSrc *v4lsrc;
gint num;
} GstV4lSrcData;
} GstMetaV4lSrc;
#define GST_META_V4LSRC_GET(buf,create) ((GstMetaV4lSrc *)gst_buffer_get_meta(buf,gst_meta_v4lsrc_get_info(),create));
static void
gst_v4lsrc_buffer_dispose (GstBuffer * buffer)
meta_v4lsrc_free (GstMetaV4lSrc * meta, GstBuffer * buffer)
{
GstV4lSrcData *data = GET_V4LSRC_DATA (buffer);
GstV4lSrc *v4lsrc;
gint num;
v4lsrc = data->v4lsrc;
num = data->num;
v4lsrc = meta->v4lsrc;
num = meta->num;
GST_LOG_OBJECT (v4lsrc, "freeing buffer %p for frame %d", buffer, num);
@ -642,17 +643,32 @@ gst_v4lsrc_buffer_dispose (GstBuffer * buffer)
gst_v4lsrc_requeue_frame (v4lsrc, num);
}
/* free data */
gst_object_unref (v4lsrc);
g_slice_free (GstV4lSrcData, data);
buffer->owner_priv = NULL;
}
static const GstMetaInfo *
gst_meta_v4lsrc_get_info (void)
{
static const GstMetaInfo *meta_v4lsrc_info = NULL;
if (meta_v4lsrc_info == NULL) {
meta_v4lsrc_info = gst_meta_register ("GstMetaV4lSrc", "GstMetaV4lSrc",
sizeof (GstMetaV4lSrc),
(GstMetaInitFunction) NULL,
(GstMetaFreeFunction) meta_v4lsrc_free,
(GstMetaCopyFunction) NULL,
(GstMetaSubFunction) NULL,
(GstMetaSerializeFunction) NULL, (GstMetaDeserializeFunction) NULL);
}
return meta_v4lsrc_info;
}
/* Create a V4lSrc buffer from our mmap'd data area */
GstBuffer *
gst_v4lsrc_buffer_new (GstV4lSrc * v4lsrc, gint num)
{
GstV4lSrcData *data;
GstMetaV4lSrc *meta;
GstClockTime duration, timestamp, latency;
GstBuffer *buf;
GstClock *clock;
@ -664,13 +680,11 @@ gst_v4lsrc_buffer_new (GstV4lSrc * v4lsrc, gint num)
return NULL;
buf = gst_buffer_new ();
data = g_slice_new (GstV4lSrcData);
buf->owner_priv = data;
GST_MINI_OBJECT_CAST (buf)->dispose =
(GstMiniObjectDisposeFunction) gst_v4lsrc_buffer_dispose;
data->num = num;
data->v4lsrc = gst_object_ref (v4lsrc);
/* attach private metadata with the frame num and v4lsrc element */
meta = GST_META_V4LSRC_GET (buf, TRUE);
meta->num = num;
meta->v4lsrc = gst_object_ref (v4lsrc);
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_READONLY);
GST_BUFFER_DATA (buf) = gst_v4lsrc_get_buffer (v4lsrc, num);

184
sys/ximage/ximagesink.c
View file

@ -165,20 +165,35 @@ static GstVideoSinkClass *parent_class = NULL;
/* ============================================================= */
/* ximage buffers */
#define GET_XDATA(buf) ((GstXImageData *) (GST_BUFFER_CAST(buf)->owner_priv))
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 ("GstMetaXImage", "GstMetaXImage",
sizeof (GstMetaXImage),
(GstMetaInitFunction) NULL,
(GstMetaFreeFunction) NULL,
(GstMetaCopyFunction) NULL,
(GstMetaSubFunction) NULL,
(GstMetaSerializeFunction) NULL, (GstMetaDeserializeFunction) NULL);
}
return meta_ximage_info;
}
static void
gst_ximage_buffer_dispose (GstBuffer * ximage)
{
GstXImageData *data = NULL;
GstMetaXImage *meta = NULL;
GstXImageSink *ximagesink = NULL;
gboolean recycled = FALSE;
gboolean running;
data = GET_XDATA (ximage);
g_return_if_fail (data != NULL);
meta = GST_META_XIMAGE_GET (ximage, FALSE);
g_return_if_fail (meta != NULL);
ximagesink = data->ximagesink;
ximagesink = meta->ximagesink;
if (G_UNLIKELY (ximagesink == NULL))
goto no_sink;
@ -193,12 +208,12 @@ gst_ximage_buffer_dispose (GstBuffer * ximage)
GST_DEBUG_OBJECT (ximagesink,
"destroy image %p because the sink is shutting down", ximage);
gst_ximagesink_ximage_destroy (ximagesink, ximage);
} else if ((data->width != GST_VIDEO_SINK_WIDTH (ximagesink)) ||
(data->height != GST_VIDEO_SINK_HEIGHT (ximagesink))) {
} else if ((meta->width != GST_VIDEO_SINK_WIDTH (ximagesink)) ||
(meta->height != GST_VIDEO_SINK_HEIGHT (ximagesink))) {
/* If our geometry changed we can't reuse that image. */
GST_DEBUG_OBJECT (ximagesink,
"destroy image %p as its size changed %dx%d vs current %dx%d",
ximage, data->width, data->height,
ximage, meta->width, meta->height,
GST_VIDEO_SINK_WIDTH (ximagesink), GST_VIDEO_SINK_HEIGHT (ximagesink));
gst_ximagesink_ximage_destroy (ximagesink, ximage);
} else {
@ -223,13 +238,12 @@ no_sink:
static void
gst_ximage_buffer_free (GstBuffer * ximage)
{
GstXImageData *data = GET_XDATA (ximage);
g_return_if_fail (data != NULL);
GstMetaXImage *meta = GST_META_XIMAGE_GET (ximage, FALSE);
g_return_if_fail (meta != NULL);
/* make sure it is not recycled */
data->width = -1;
data->height = -1;
meta->width = -1;
meta->height = -1;
gst_buffer_unref (ximage);
}
@ -350,33 +364,32 @@ static GstBuffer *
gst_ximagesink_ximage_new (GstXImageSink * ximagesink, GstCaps * caps)
{
GstBuffer *buffer = NULL;
GstXImageData *data = NULL;
GstMetaXImage *meta = NULL;
GstStructure *structure = NULL;
gboolean succeeded = FALSE;
int (*handler) (Display *, XErrorEvent *);
g_return_val_if_fail (GST_IS_XIMAGESINK (ximagesink), NULL);
data = g_slice_new0 (GstXImageData);
#ifdef HAVE_XSHM
data->SHMInfo.shmaddr = ((void *) -1);
data->SHMInfo.shmid = -1;
#endif
buffer = gst_buffer_new ();
GST_MINI_OBJECT_CAST (buffer)->dispose =
(GstMiniObjectDisposeFunction) gst_ximage_buffer_dispose;
buffer->owner_priv = data;
meta = GST_META_XIMAGE_GET (buffer, TRUE);
#ifdef HAVE_XSHM
meta->SHMInfo.shmaddr = ((void *) -1);
meta->SHMInfo.shmid = -1;
#endif
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "width", &data->width) ||
!gst_structure_get_int (structure, "height", &data->height)) {
if (!gst_structure_get_int (structure, "width", &meta->width) ||
!gst_structure_get_int (structure, "height", &meta->height)) {
GST_WARNING ("failed getting geometry from caps %" GST_PTR_FORMAT, caps);
}
GST_DEBUG_OBJECT (ximagesink, "creating image %p (%dx%d)", data,
data->width, data->height);
GST_DEBUG_OBJECT (ximagesink, "creating image %p (%dx%d)", buffer,
meta->width, meta->height);
g_mutex_lock (ximagesink->x_lock);
@ -386,11 +399,11 @@ gst_ximagesink_ximage_new (GstXImageSink * ximagesink, GstCaps * caps)
#ifdef HAVE_XSHM
if (ximagesink->xcontext->use_xshm) {
data->ximage = XShmCreateImage (ximagesink->xcontext->disp,
meta->ximage = XShmCreateImage (ximagesink->xcontext->disp,
ximagesink->xcontext->visual,
ximagesink->xcontext->depth,
ZPixmap, NULL, &data->SHMInfo, data->width, data->height);
if (!data->ximage || error_caught) {
ZPixmap, NULL, &meta->SHMInfo, meta->width, meta->height);
if (!meta->ximage || error_caught) {
g_mutex_unlock (ximagesink->x_lock);
/* Reset error handler */
error_caught = FALSE;
@ -398,52 +411,52 @@ gst_ximagesink_ximage_new (GstXImageSink * ximagesink, GstCaps * caps)
/* Push an error */
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
data->width, data->height),
meta->width, meta->height),
("could not XShmCreateImage a %dx%d image",
data->width, data->height));
meta->width, meta->height));
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;
meta->size = meta->ximage->bytes_per_line * meta->ximage->height;
GST_LOG_OBJECT (ximagesink,
"XShm image size is %" G_GSIZE_FORMAT ", width %d, stride %d",
data->size, data->width, data->ximage->bytes_per_line);
meta->size, meta->width, meta->ximage->bytes_per_line);
data->SHMInfo.shmid = shmget (IPC_PRIVATE, data->size, IPC_CREAT | 0777);
if (data->SHMInfo.shmid == -1) {
meta->SHMInfo.shmid = shmget (IPC_PRIVATE, meta->size, IPC_CREAT | 0777);
if (meta->SHMInfo.shmid == -1) {
g_mutex_unlock (ximagesink->x_lock);
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
data->width, data->height),
meta->width, meta->height),
("could not get shared memory of %" G_GSIZE_FORMAT " bytes",
data->size));
meta->size));
goto beach;
}
data->SHMInfo.shmaddr = shmat (data->SHMInfo.shmid, NULL, 0);
if (data->SHMInfo.shmaddr == ((void *) -1)) {
meta->SHMInfo.shmaddr = shmat (meta->SHMInfo.shmid, NULL, 0);
if (meta->SHMInfo.shmaddr == ((void *) -1)) {
g_mutex_unlock (ximagesink->x_lock);
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
data->width, data->height),
meta->width, meta->height),
("Failed to shmat: %s", g_strerror (errno)));
/* Clean up the shared memory segment */
shmctl (data->SHMInfo.shmid, IPC_RMID, NULL);
shmctl (meta->SHMInfo.shmid, IPC_RMID, NULL);
goto beach;
}
data->ximage->data = data->SHMInfo.shmaddr;
data->SHMInfo.readOnly = FALSE;
meta->ximage->data = meta->SHMInfo.shmaddr;
meta->SHMInfo.readOnly = FALSE;
if (XShmAttach (ximagesink->xcontext->disp, &data->SHMInfo) == 0) {
if (XShmAttach (ximagesink->xcontext->disp, &meta->SHMInfo) == 0) {
/* Clean up shm seg */
shmctl (data->SHMInfo.shmid, IPC_RMID, NULL);
shmctl (meta->SHMInfo.shmid, IPC_RMID, NULL);
g_mutex_unlock (ximagesink->x_lock);
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
data->width, data->height), ("Failed to XShmAttach"));
meta->width, meta->height), ("Failed to XShmAttach"));
goto beach;
}
@ -452,19 +465,19 @@ gst_ximagesink_ximage_new (GstXImageSink * ximagesink, GstCaps * caps)
/* Now that everyone has attached, we can delete the shared memory segment.
* This way, it will be deleted as soon as we detach later, and not
* leaked if we crash. */
shmctl (data->SHMInfo.shmid, IPC_RMID, NULL);
shmctl (meta->SHMInfo.shmid, IPC_RMID, NULL);
} else
#endif /* HAVE_XSHM */
{
guint allocsize;
data->ximage = XCreateImage (ximagesink->xcontext->disp,
meta->ximage = XCreateImage (ximagesink->xcontext->disp,
ximagesink->xcontext->visual,
ximagesink->xcontext->depth,
ZPixmap, 0, NULL,
data->width, data->height, ximagesink->xcontext->bpp, 0);
if (!data->ximage || error_caught) {
meta->width, meta->height, ximagesink->xcontext->bpp, 0);
if (!meta->ximage || error_caught) {
g_mutex_unlock (ximagesink->x_lock);
/* Reset error handler */
error_caught = FALSE;
@ -472,31 +485,31 @@ gst_ximagesink_ximage_new (GstXImageSink * ximagesink, GstCaps * caps)
/* Push an error */
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
data->width, data->height),
("could not XCreateImage a %dx%d image", data->width, data->height));
meta->width, meta->height),
("could not XCreateImage a %dx%d image", meta->width, meta->height));
goto beach;
}
/* upstream will assume that rowstrides are multiples of 4, but this
* doesn't always seem to be the case with XCreateImage() */
if ((data->ximage->bytes_per_line % 4) != 0) {
if ((meta->ximage->bytes_per_line % 4) != 0) {
GST_WARNING_OBJECT (ximagesink, "returned stride not a multiple of 4 as "
"usually assumed");
}
/* we have to use the returned bytes_per_line for our image size */
data->size = data->ximage->bytes_per_line * data->ximage->height;
meta->size = meta->ximage->bytes_per_line * meta->ximage->height;
/* alloc a bit more for unexpected strides to avoid crashes upstream.
* FIXME: if we get an unrounded stride, the image will be displayed
* distorted, since all upstream elements assume a rounded stride */
allocsize =
GST_ROUND_UP_4 (data->ximage->bytes_per_line) * data->ximage->height;
data->ximage->data = g_malloc (allocsize);
GST_ROUND_UP_4 (meta->ximage->bytes_per_line) * meta->ximage->height;
meta->ximage->data = g_malloc (allocsize);
GST_LOG_OBJECT (ximagesink,
"non-XShm image size is %" G_GSIZE_FORMAT " (alloced: %u), width %d, "
"stride %d", data->size, allocsize, data->width,
data->ximage->bytes_per_line);
"stride %d", meta->size, allocsize, meta->width,
meta->ximage->bytes_per_line);
XSync (ximagesink->xcontext->disp, FALSE);
}
@ -508,10 +521,10 @@ gst_ximagesink_ximage_new (GstXImageSink * ximagesink, GstCaps * caps)
succeeded = TRUE;
/* Keep a ref to our sink */
data->ximagesink = gst_object_ref (ximagesink);
meta->ximagesink = gst_object_ref (ximagesink);
GST_BUFFER_DATA (buffer) = (guchar *) data->ximage->data;
GST_BUFFER_SIZE (buffer) = data->size;
GST_BUFFER_DATA (buffer) = (guchar *) meta->ximage->data;
GST_BUFFER_SIZE (buffer) = meta->size;
g_mutex_unlock (ximagesink->x_lock);
@ -528,13 +541,13 @@ beach:
static void
gst_ximagesink_ximage_destroy (GstXImageSink * ximagesink, GstBuffer * ximage)
{
GstXImageData *data;
GstMetaXImage *meta;
g_return_if_fail (ximage != NULL);
g_return_if_fail (GST_IS_XIMAGESINK (ximagesink));
data = GET_XDATA (ximage);
g_return_if_fail (data != NULL);
meta = GST_META_XIMAGE_GET (ximage, FALSE);
g_return_if_fail (meta != NULL);
/* Hold the object lock to ensure the XContext doesn't disappear */
GST_OBJECT_LOCK (ximagesink);
@ -548,8 +561,8 @@ gst_ximagesink_ximage_destroy (GstXImageSink * ximagesink, GstBuffer * ximage)
if (!ximagesink->xcontext) {
GST_DEBUG_OBJECT (ximagesink, "Destroying XImage after XContext");
#ifdef HAVE_XSHM
if (data->SHMInfo.shmaddr != ((void *) -1)) {
shmdt (data->SHMInfo.shmaddr);
if (meta->SHMInfo.shmaddr != ((void *) -1)) {
shmdt (meta->SHMInfo.shmaddr);
}
#endif
goto beach;
@ -559,19 +572,19 @@ gst_ximagesink_ximage_destroy (GstXImageSink * ximagesink, GstBuffer * ximage)
#ifdef HAVE_XSHM
if (ximagesink->xcontext->use_xshm) {
if (data->SHMInfo.shmaddr != ((void *) -1)) {
XShmDetach (ximagesink->xcontext->disp, &data->SHMInfo);
if (meta->SHMInfo.shmaddr != ((void *) -1)) {
XShmDetach (ximagesink->xcontext->disp, &meta->SHMInfo);
XSync (ximagesink->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);
}
}
@ -582,13 +595,11 @@ gst_ximagesink_ximage_destroy (GstXImageSink * ximagesink, GstBuffer * ximage)
beach:
GST_OBJECT_UNLOCK (ximagesink);
if (data->ximagesink) {
if (meta->ximagesink) {
/* Release the ref to our sink */
data->ximagesink = NULL;
meta->ximagesink = NULL;
gst_object_unref (ximagesink);
}
g_slice_free (GstXImageData, data);
ximage->owner_priv = NULL;
return;
}
@ -633,7 +644,7 @@ gst_ximagesink_xwindow_draw_borders (GstXImageSink * ximagesink,
static gboolean
gst_ximagesink_ximage_put (GstXImageSink * ximagesink, GstBuffer * ximage)
{
GstXImageData *data;
GstMetaXImage *meta;
GstVideoRectangle src, dst, result;
gboolean draw_border = FALSE;
@ -675,9 +686,9 @@ gst_ximagesink_ximage_put (GstXImageSink * ximagesink, GstBuffer * ximage)
}
}
data = GET_XDATA (ximage);
src.w = data->width;
src.h = data->height;
meta = GST_META_XIMAGE_GET (ximage, FALSE);
src.w = meta->width;
src.h = meta->height;
dst.w = ximagesink->xwindow->width;
dst.h = ximagesink->xwindow->height;
@ -697,7 +708,7 @@ gst_ximagesink_ximage_put (GstXImageSink * ximagesink, GstBuffer * ximage)
ximage, 0, 0, result.x, result.y, result.w, result.h,
ximagesink->xwindow->width, ximagesink->xwindow->height);
XShmPutImage (ximagesink->xcontext->disp, ximagesink->xwindow->win,
ximagesink->xwindow->gc, data->ximage, 0, 0, result.x, result.y,
ximagesink->xwindow->gc, meta->ximage, 0, 0, result.x, result.y,
result.w, result.h, FALSE);
} else
#endif /* HAVE_XSHM */
@ -707,7 +718,7 @@ gst_ximagesink_ximage_put (GstXImageSink * ximagesink, GstBuffer * ximage)
ximage, 0, 0, result.x, result.y, result.w, result.h,
ximagesink->xwindow->width, ximagesink->xwindow->height);
XPutImage (ximagesink->xcontext->disp, ximagesink->xwindow->win,
ximagesink->xwindow->gc, data->ximage, 0, 0, result.x, result.y,
ximagesink->xwindow->gc, meta->ximage, 0, 0, result.x, result.y,
result.w, result.h);
}
@ -1504,10 +1515,10 @@ gst_ximagesink_setcaps (GstBaseSink * bsink, GstCaps * caps)
/* If our ximage has changed we destroy it, next chain iteration will create
a new one */
if ((ximagesink->ximage)) {
GstXImageData *data = GET_XDATA (ximagesink->ximage);
GstMetaXImage *meta = GST_META_XIMAGE_GET (ximagesink->ximage, FALSE);
if (((GST_VIDEO_SINK_WIDTH (ximagesink) != data->width) ||
(GST_VIDEO_SINK_HEIGHT (ximagesink) != data->height))) {
if (((GST_VIDEO_SINK_WIDTH (ximagesink) != meta->width) ||
(GST_VIDEO_SINK_HEIGHT (ximagesink) != meta->height))) {
GST_DEBUG_OBJECT (ximagesink, "our image is not usable anymore, unref %p",
ximagesink->ximage);
gst_buffer_unref (ximagesink->ximage);
@ -1655,10 +1666,11 @@ gst_ximagesink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
goto no_ximage;
if (GST_BUFFER_SIZE (ximagesink->ximage) < GST_BUFFER_SIZE (buf)) {
GstMetaXImage *meta = GST_META_XIMAGE_GET (ximagesink->ximage, FALSE);
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
GET_XDATA (ximagesink->ximage)->width,
GET_XDATA (ximagesink->ximage)->height),
meta->width, meta->height),
("XServer allocated buffer size did not match input buffer"));
gst_ximagesink_ximage_destroy (ximagesink, ximagesink->ximage);

12
sys/ximage/ximagesink.h
View file

@ -52,7 +52,7 @@ G_BEGIN_DECLS
typedef struct _GstXContext GstXContext;
typedef struct _GstXWindow GstXWindow;
typedef struct _GstXImageData GstXImageData;
typedef struct _GstMetaXImage GstMetaXImage;
typedef struct _GstXImageSink GstXImageSink;
typedef struct _GstXImageSinkClass GstXImageSinkClass;
@ -130,7 +130,7 @@ struct _GstXWindow
/**
* GstXImageData:
* GstMetaXImage:
* @ximagesink: a reference to our #GstXImageSink
* @ximage: the XImage of this buffer
* @width: the width in pixels of XImage @ximage
@ -139,8 +139,10 @@ struct _GstXWindow
*
* Structure with additional information about an XImage.
*/
struct _GstXImageData
struct _GstMetaXImage
{
GstMeta meta;
/* Reference to the ximagesink we belong to */
GstXImageSink *ximagesink;
@ -154,6 +156,10 @@ struct _GstXImageData
size_t size;
};
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));
/**
* GstXImageSink:
* @display_name: the name of the Display we want to render to

60
sys/xvimage/xvimagesink.c
View file

@ -198,16 +198,31 @@ static GstVideoSinkClass *parent_class = NULL;
/* ============================================================= */
/* xvimage buffers */
#define GET_XVDATA(buf) ((GstXvImageData *) (GST_BUFFER_CAST(buf)->owner_priv))
const GstMetaInfo *
gst_meta_xvimage_get_info (void)
{
static const GstMetaInfo *meta_xvimage_info = NULL;
if (meta_xvimage_info == NULL) {
meta_xvimage_info = gst_meta_register ("GstMetaXvImage", "GstMetaXvImage",
sizeof (GstMetaXvImage),
(GstMetaInitFunction) NULL,
(GstMetaFreeFunction) NULL,
(GstMetaCopyFunction) NULL,
(GstMetaSubFunction) NULL,
(GstMetaSerializeFunction) NULL, (GstMetaDeserializeFunction) NULL);
}
return meta_xvimage_info;
}
static void
gst_xvimage_buffer_dispose (GstBuffer * xvimage)
{
GstXvImageData *data = NULL;
GstMetaXvImage *data = NULL;
GstXvImageSink *xvimagesink;
gboolean running;
data = GET_XVDATA (xvimage);
data = GST_META_XVIMAGE_GET (xvimage, FALSE);
g_return_if_fail (data != NULL);
xvimagesink = data->xvimagesink;
@ -253,7 +268,7 @@ no_sink:
static void
gst_xvimage_buffer_free (GstBuffer * xvimage)
{
GstXvImageData *data = GET_XVDATA (xvimage);
GstMetaXvImage *data = GST_META_XVIMAGE_GET (xvimage, FALSE);
g_return_if_fail (data != NULL);
@ -387,7 +402,7 @@ static GstBuffer *
gst_xvimagesink_xvimage_new (GstXvImageSink * xvimagesink, GstCaps * caps)
{
GstBuffer *buffer = NULL;
GstXvImageData *data = NULL;
GstMetaXvImage *data = NULL;
GstStructure *structure = NULL;
gboolean succeeded = FALSE;
int (*handler) (Display *, XErrorEvent *);
@ -397,17 +412,16 @@ gst_xvimagesink_xvimage_new (GstXvImageSink * xvimagesink, GstCaps * caps)
if (caps == NULL)
return NULL;
data = g_slice_new0 (GstXvImageData);
#ifdef HAVE_XSHM
data->SHMInfo.shmaddr = ((void *) -1);
data->SHMInfo.shmid = -1;
#endif
buffer = gst_buffer_new ();
GST_DEBUG_OBJECT (xvimagesink, "Creating new XvImageBuffer");
GST_MINI_OBJECT_CAST (buffer)->dispose =
(GstMiniObjectDisposeFunction) gst_xvimage_buffer_dispose;
buffer->owner_priv = data;
data = GST_META_XVIMAGE_GET (buffer, TRUE);
#ifdef HAVE_XSHM
data->SHMInfo.shmaddr = ((void *) -1);
data->SHMInfo.shmid = -1;
#endif
structure = gst_caps_get_structure (caps, 0);
@ -611,14 +625,14 @@ static void
gst_xvimagesink_xvimage_destroy (GstXvImageSink * xvimagesink,
GstBuffer * xvimage)
{
GstXvImageData *data = NULL;
GstMetaXvImage *data = NULL;
GST_DEBUG_OBJECT (xvimage, "Destroying buffer");
g_return_if_fail (xvimage != NULL);
g_return_if_fail (GST_IS_XVIMAGESINK (xvimagesink));
data = GET_XVDATA (xvimage);
data = GST_META_XVIMAGE_GET (xvimage, FALSE);
g_return_if_fail (data != NULL);
GST_OBJECT_LOCK (xvimagesink);
@ -675,9 +689,6 @@ beach:
data->xvimagesink = NULL;
gst_object_unref (xvimagesink);
g_slice_free (GstXvImageData, data);
xvimage->owner_priv = NULL;
return;
}
@ -730,7 +741,7 @@ gst_xvimagesink_xwindow_draw_borders (GstXvImageSink * xvimagesink,
static gboolean
gst_xvimagesink_xvimage_put (GstXvImageSink * xvimagesink, GstBuffer * xvimage)
{
GstXvImageData *data;
GstMetaXvImage *data;
GstVideoRectangle result;
gboolean draw_border = FALSE;
@ -795,7 +806,8 @@ gst_xvimagesink_xvimage_put (GstXvImageSink * xvimagesink, GstBuffer * xvimage)
xvimagesink->redraw_border = FALSE;
}
data = GET_XVDATA (xvimage);
data = GST_META_XVIMAGE_GET (xvimage, FALSE);
g_assert (data != NULL);
/* We scale to the window's geometry */
#ifdef HAVE_XSHM
@ -2174,7 +2186,7 @@ gst_xvimagesink_setcaps (GstBaseSink * bsink, GstCaps * caps)
/* We renew our xvimage only if size or format changed;
* the xvimage is the same size as the video pixel size */
if ((xvimagesink->xvimage)) {
GstXvImageData *data = GET_XVDATA (xvimagesink->xvimage);
GstMetaXvImage *data = GST_META_XVIMAGE_GET (xvimagesink->xvimage, FALSE);
if (((im_format != data->im_format) ||
(video_width != data->width) || (video_height != data->height))) {
@ -2350,10 +2362,12 @@ gst_xvimagesink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
goto no_image;
if (GST_BUFFER_SIZE (xvimagesink->xvimage) < GST_BUFFER_SIZE (buf)) {
GstMetaXvImage *meta =
GST_META_XVIMAGE_GET (xvimagesink->xvimage, FALSE);
GST_ELEMENT_ERROR (xvimagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
GET_XVDATA (xvimagesink->xvimage)->width,
GET_XVDATA (xvimagesink->xvimage)->height),
meta->width, meta->height),
("XServer allocated buffer size did not match input buffer"));
gst_xvimagesink_xvimage_destroy (xvimagesink, xvimagesink->xvimage);
@ -2475,7 +2489,7 @@ gst_xvimagesink_buffer_alloc (GstBaseSink * bsink, guint64 offset, guint size,
{
GstFlowReturn ret = GST_FLOW_OK;
GstXvImageSink *xvimagesink;
GstXvImageData *xvimage = NULL;
GstMetaXvImage *xvimage = NULL;
GstCaps *intersection = NULL;
GstStructure *structure = NULL;
gint width, height, image_format;

11
sys/xvimage/xvimagesink.h
View file

@ -58,7 +58,7 @@ G_BEGIN_DECLS
typedef struct _GstXContext GstXContext;
typedef struct _GstXWindow GstXWindow;
typedef struct _GstXvImageFormat GstXvImageFormat;
typedef struct _GstXvImageData GstXvImageData;
typedef struct _GstMetaXvImage GstMetaXvImage;
typedef struct _GstXvImageSink GstXvImageSink;
typedef struct _GstXvImageSinkClass GstXvImageSinkClass;
@ -172,7 +172,9 @@ struct _GstXvImageFormat {
*
* Structure with additional information about an XvImage.
*/
struct _GstXvImageData {
struct _GstMetaXvImage {
GstMeta meta;
/* Reference to the xvimagesink we belong to */
GstXvImageSink *xvimagesink;
@ -186,6 +188,11 @@ struct _GstXvImageData {
size_t size;
};
const GstMetaInfo * gst_meta_xvimage_get_info (void);
#define GST_META_XVIMAGE_GET(buf,create) ((GstMetaXvImage *)gst_buffer_get_meta(buf,gst_meta_xvimage_get_info(),create));
/**
* GstXvImageSink:
* @display_name: the name of the Display we want to render to