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ximage: add support for alignment bufferpool option

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This commit is contained in:
Wim Taymans 2011-08-01 19:04:47 +02:00
parent 66142747bd
commit 947b6b3faa
3 changed files with 86 additions and 40 deletions
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115
sys/ximage/ximagepool.c
View file

@ -35,6 +35,17 @@
GST_DEBUG_CATEGORY_EXTERN (gst_debug_ximagepool);
#define GST_CAT_DEFAULT gst_debug_ximagepool
struct _GstXImageBufferPoolPrivate
{
GstCaps *caps;
GstVideoInfo info;
GstVideoAlignment align;
guint padded_width;
guint padded_height;
gboolean add_metavideo;
gboolean need_alignment;
};
static void gst_meta_ximage_free (GstMetaXImage * meta, GstBuffer * buffer);
/* ximage metadata */
@ -67,17 +78,24 @@ gst_ximagesink_handle_xerror (Display * display, XErrorEvent * xevent)
return 0;
}
GstMetaXImage *
gst_buffer_add_meta_ximage (GstBuffer * buffer, GstXImageSink * ximagesink,
gint width, gint height)
static GstMetaXImage *
gst_buffer_add_meta_ximage (GstBuffer * buffer, GstXImageBufferPool * xpool)
{
GstXImageSink *ximagesink;
int (*handler) (Display *, XErrorEvent *);
gboolean success = FALSE;
GstXContext *xcontext;
GstMetaXImage *meta;
gint width, height;
GstXImageBufferPoolPrivate *priv;
priv = xpool->priv;
ximagesink = xpool->sink;
xcontext = ximagesink->xcontext;
width = priv->padded_width;
height = priv->padded_height;
meta =
(GstMetaXImage *) gst_buffer_add_meta (buffer, GST_META_INFO_XIMAGE,
NULL);
@ -85,12 +103,14 @@ gst_buffer_add_meta_ximage (GstBuffer * buffer, GstXImageSink * ximagesink,
meta->SHMInfo.shmaddr = ((void *) -1);
meta->SHMInfo.shmid = -1;
#endif
meta->width = width;
meta->height = height;
meta->x = priv->align.padding_left;
meta->y = priv->align.padding_top;
meta->width = GST_VIDEO_INFO_WIDTH (&priv->info);
meta->height = GST_VIDEO_INFO_HEIGHT (&priv->info);
meta->sink = gst_object_ref (ximagesink);
GST_DEBUG_OBJECT (ximagesink, "creating image %p (%dx%d)", buffer,
meta->width, meta->height);
width, height);
g_mutex_lock (ximagesink->x_lock);
@ -102,8 +122,7 @@ gst_buffer_add_meta_ximage (GstBuffer * buffer, GstXImageSink * ximagesink,
if (xcontext->use_xshm) {
meta->ximage = XShmCreateImage (xcontext->disp,
xcontext->visual,
xcontext->depth,
ZPixmap, NULL, &meta->SHMInfo, meta->width, meta->height);
xcontext->depth, ZPixmap, NULL, &meta->SHMInfo, width, height);
if (!meta->ximage || error_caught) {
g_mutex_unlock (ximagesink->x_lock);
@ -113,9 +132,8 @@ gst_buffer_add_meta_ximage (GstBuffer * buffer, GstXImageSink * ximagesink,
/* Push a warning */
GST_ELEMENT_WARNING (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
meta->width, meta->height),
("could not XShmCreateImage a %dx%d image",
meta->width, meta->height));
width, height),
("could not XShmCreateImage a %dx%d image", width, height));
/* Retry without XShm */
ximagesink->xcontext->use_xshm = FALSE;
@ -130,7 +148,7 @@ gst_buffer_add_meta_ximage (GstBuffer * buffer, GstXImageSink * ximagesink,
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",
meta->size, meta->width, meta->ximage->bytes_per_line);
meta->size, width, meta->ximage->bytes_per_line);
/* get shared memory */
meta->SHMInfo.shmid = shmget (IPC_PRIVATE, meta->size, IPC_CREAT | 0777);
@ -166,8 +184,7 @@ gst_buffer_add_meta_ximage (GstBuffer * buffer, GstXImageSink * ximagesink,
meta->ximage = XCreateImage (xcontext->disp,
xcontext->visual,
xcontext->depth,
ZPixmap, 0, NULL, meta->width, meta->height, xcontext->bpp, 0);
xcontext->depth, ZPixmap, 0, NULL, width, height, xcontext->bpp, 0);
if (!meta->ximage || error_caught)
goto create_failed;
@ -190,7 +207,7 @@ gst_buffer_add_meta_ximage (GstBuffer * buffer, GstXImageSink * ximagesink,
meta->ximage->data = g_malloc (allocsize);
GST_LOG_OBJECT (ximagesink,
"non-XShm image size is %" G_GSIZE_FORMAT " (alloced: %u), width %d, "
"stride %d", meta->size, allocsize, meta->width,
"stride %d", meta->size, allocsize, width,
meta->ximage->bytes_per_line);
XSync (xcontext->disp, FALSE);
@ -224,8 +241,8 @@ create_failed:
/* Push an error */
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
meta->width, meta->height),
("could not XShmCreateImage a %dx%d image", meta->width, meta->height));
width, height),
("could not XShmCreateImage a %dx%d image", width, height));
goto beach;
}
shmget_failed:
@ -233,7 +250,7 @@ shmget_failed:
g_mutex_unlock (ximagesink->x_lock);
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
meta->width, meta->height),
width, height),
("could not get shared memory of %" G_GSIZE_FORMAT " bytes",
meta->size));
goto beach;
@ -243,8 +260,7 @@ shmat_failed:
g_mutex_unlock (ximagesink->x_lock);
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
meta->width, meta->height),
("Failed to shmat: %s", g_strerror (errno)));
width, height), ("Failed to shmat: %s", g_strerror (errno)));
/* Clean up the shared memory segment */
shmctl (meta->SHMInfo.shmid, IPC_RMID, NULL);
goto beach;
@ -257,7 +273,7 @@ xattach_failed:
GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
meta->width, meta->height), ("Failed to XShmAttach"));
width, height), ("Failed to XShmAttach"));
goto beach;
}
}
@ -431,13 +447,6 @@ static void gst_ximage_buffer_pool_finalize (GObject * object);
#define GST_XIMAGE_BUFFER_POOL_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_XIMAGE_BUFFER_POOL, GstXImageBufferPoolPrivate))
struct _GstXImageBufferPoolPrivate
{
GstCaps *caps;
GstVideoInfo info;
gboolean add_metavideo;
};
#define gst_ximage_buffer_pool_parent_class parent_class
G_DEFINE_TYPE (GstXImageBufferPool, gst_ximage_buffer_pool,
GST_TYPE_BUFFER_POOL);
@ -445,7 +454,9 @@ G_DEFINE_TYPE (GstXImageBufferPool, gst_ximage_buffer_pool,
static const gchar **
ximage_buffer_pool_get_options (GstBufferPool * pool)
{
static const gchar *options[] = { GST_BUFFER_POOL_OPTION_META_VIDEO, NULL };
static const gchar *options[] = { GST_BUFFER_POOL_OPTION_META_VIDEO,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT, NULL
};
return options;
}
@ -483,6 +494,29 @@ ximage_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_META_VIDEO);
/* parse extra alignment info */
priv->need_alignment = gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
if (priv->need_alignment) {
gst_buffer_pool_config_get_video_alignment (config, &priv->align);
GST_LOG_OBJECT (pool, "padding %u-%ux%u-%u", priv->align.padding_top,
priv->align.padding_left, priv->align.padding_left,
priv->align.padding_bottom);
/* we need the video metadata too now */
priv->add_metavideo = TRUE;
}
/* add the padding */
priv->padded_width =
GST_VIDEO_INFO_WIDTH (&info) + priv->align.padding_left +
priv->align.padding_right;
priv->padded_height =
GST_VIDEO_INFO_HEIGHT (&info) + priv->align.padding_top +
priv->align.padding_bottom;
return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config);
/* ERRORS */
@ -518,18 +552,31 @@ ximage_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer,
info = &priv->info;
ximage = gst_buffer_new ();
meta =
gst_buffer_add_meta_ximage (ximage, xpool->sink,
GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info));
meta = gst_buffer_add_meta_ximage (ximage, xpool);
if (meta == NULL) {
gst_buffer_unref (ximage);
goto no_buffer;
}
if (priv->add_metavideo) {
GstMetaVideo *meta;
GST_DEBUG_OBJECT (pool, "adding GstMetaVideo");
/* these are just the defaults for now */
gst_buffer_add_meta_video (ximage, 0, GST_VIDEO_INFO_FORMAT (info),
GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info));
meta = gst_buffer_add_meta_video (ximage, 0, GST_VIDEO_INFO_FORMAT (info),
priv->padded_width, priv->padded_height);
if (priv->need_alignment) {
gint vpad, hpad, pstride;
vpad = priv->align.padding_left;
hpad = priv->align.padding_top;
meta->width = GST_VIDEO_INFO_WIDTH (&priv->info);
meta->height = GST_VIDEO_INFO_HEIGHT (&priv->info);
pstride = GST_VIDEO_INFO_COMP_PSTRIDE (&priv->info, 0);
meta->offset[0] += (vpad * meta->stride[0]) + (hpad * pstride);
}
}
*buffer = ximage;

3
sys/ximage/ximagepool.h
View file

@ -51,8 +51,6 @@ const GstMetaInfo * gst_meta_ximage_get_info (void);
#define GST_META_INFO_XIMAGE (gst_meta_ximage_get_info())
#define gst_buffer_get_meta_ximage(b) ((GstMetaXImage*)gst_buffer_get_meta((b),GST_META_INFO_XIMAGE))
GstMetaXImage * gst_buffer_add_meta_ximage (GstBuffer *buffer, GstXImageSink * ximagesink,
gint width, gint height);
/**
* GstMetaXImage:
@ -77,6 +75,7 @@ struct _GstMetaXImage
XShmSegmentInfo SHMInfo;
#endif /* HAVE_XSHM */
gint x, y;
gint width, height;
size_t size;
};

8
sys/ximage/ximagesink.c
View file

@ -268,13 +268,13 @@ gst_ximagesink_ximage_put (GstXImageSink * ximagesink, GstBuffer * ximage)
crop = gst_buffer_get_meta_video_crop (ximage);
if (crop) {
src.x = crop->x;
src.y = crop->y;
src.x = crop->x + meta->x;
src.y = crop->y + meta->y;
src.w = crop->width;
src.h = crop->height;
} else {
src.x = 0;
src.y = 0;
src.x = meta->x;
src.y = meta->y;
src.w = meta->width;
src.h = meta->height;
}