diff options
Diffstat (limited to 'gst-libs')
| -rw-r--r-- | gst-libs/gst/Makefile.am | 4 | ||||
| -rw-r--r-- | gst-libs/gst/video/Makefile.am | 24 | ||||
| -rw-r--r-- | gst-libs/gst/video/gstsurfaceconverter.c | 80 | ||||
| -rw-r--r-- | gst-libs/gst/video/gstsurfaceconverter.h | 65 | ||||
| -rw-r--r-- | gst-libs/gst/video/gstsurfacemeta.c | 96 | ||||
| -rw-r--r-- | gst-libs/gst/video/gstsurfacemeta.h | 68 | ||||
| -rw-r--r-- | gst-libs/gst/video/videocontext.c | 539 | ||||
| -rw-r--r-- | gst-libs/gst/video/videocontext.h | 117 |
8 files changed, 2 insertions, 991 deletions
diff --git a/gst-libs/gst/Makefile.am b/gst-libs/gst/Makefile.am index c1b3081e6..9af1a16d7 100644 --- a/gst-libs/gst/Makefile.am +++ b/gst-libs/gst/Makefile.am @@ -2,10 +2,10 @@ if HAVE_EGL EGL_DIR = egl endif -SUBDIRS = interfaces signalprocessor video basecamerabinsrc codecparsers \ +SUBDIRS = interfaces signalprocessor basecamerabinsrc codecparsers \ insertbin $(EGL_DIR) noinst_HEADERS = gst-i18n-plugin.h gettext.h glib-compat-private.h -DIST_SUBDIRS = interfaces egl signalprocessor video basecamerabinsrc codecparsers \ +DIST_SUBDIRS = interfaces egl signalprocessor basecamerabinsrc codecparsers \ insertbin diff --git a/gst-libs/gst/video/Makefile.am b/gst-libs/gst/video/Makefile.am deleted file mode 100644 index be87cd970..000000000 --- a/gst-libs/gst/video/Makefile.am +++ /dev/null @@ -1,24 +0,0 @@ - -lib_LTLIBRARIES = libgstbasevideo-@GST_API_VERSION@.la - -CLEANFILES = $(BUILT_SOURCES) - -libgstbasevideo_@GST_API_VERSION@_la_SOURCES = \ - gstsurfacemeta.c \ - gstsurfaceconverter.c \ - videocontext.c - -libgstbasevideo_@GST_API_VERSION@includedir = $(includedir)/gstreamer-@GST_API_VERSION@/gst/video -libgstbasevideo_@GST_API_VERSION@include_HEADERS = \ - gstsurfacemeta.h \ - gstsurfaceconverter.h \ - videocontext.h - -libgstbasevideo_@GST_API_VERSION@_la_CFLAGS = \ - $(GST_PLUGINS_BAD_CFLAGS) \ - $(GST_PLUGINS_BASE_CFLAGS) \ - -DGST_USE_UNSTABLE_API \ - $(GST_CFLAGS) -libgstbasevideo_@GST_API_VERSION@_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) $(GST_LIBS) -lgstvideo-@GST_API_VERSION@ -libgstbasevideo_@GST_API_VERSION@_la_LDFLAGS = $(GST_LIB_LDFLAGS) $(GST_ALL_LDFLAGS) $(GST_LT_LDFLAGS) - diff --git a/gst-libs/gst/video/gstsurfaceconverter.c b/gst-libs/gst/video/gstsurfaceconverter.c deleted file mode 100644 index 605fbb1e8..000000000 --- a/gst-libs/gst/video/gstsurfaceconverter.c +++ /dev/null @@ -1,80 +0,0 @@ -/* GStreamer - * Copyright (C) 2011 Collabora Ltd. - * Copyright (C) 2011 Intel - * - * Author: Nicolas Dufresne <nicolas.dufresne@collabora.com> - * - * 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 - -#include "gstsurfaceconverter.h" -#include "gstsurfacemeta.h" - -/** - * SECTION:gstsurfaceconverter - * @short_description: Interface for #GstSurfaceBuffer convertion - * - * Objects implementing this interface are used as a convertion context. This - * allow element optimizing the upload by keeping required resources between - * uploads. The context must be discarded when the pipeline goes to - * #GST_STATE_NULL or renewed whenever the caps are changed. - * <note> - * The GstSurfaceConverter interface is unstable API and may change in future. - * One can define GST_USE_UNSTABLE_API to acknowledge and avoid this warning. - * </note> - * - * <refsect2> - * <title>Example uploading to GL texture</title> - * |[ - * if (G_UNLIKELY (priv->converter == NULL)) - * priv->converter = gst_surface_buffer_create_converter (surface, "opengl", &value); - * - * gst_surface_converter_uplaod (priv->converter, surface); - * ]| - * </refsect2> - */ - -G_DEFINE_INTERFACE (GstSurfaceConverter, gst_surface_converter, G_TYPE_INVALID); - -static void -gst_surface_converter_default_init (GstSurfaceConverterInterface * iface) -{ - /* default virtual functions */ - iface->upload = NULL; -} - -/** - * gst_surface_converter_upload: - * @converter: a #GstSurfaceConverter - * @buffer: the #GstBuffer to upload - * - * Convert and uploads the #GstSurfaceBuffer to the converter destination. - * - * Returns: #TRUE on success, #FALSE otherwise - */ -gboolean -gst_surface_converter_upload (GstSurfaceConverter * converter, - GstBuffer * buffer) -{ - g_return_val_if_fail (GST_IS_SURFACE_CONVERTER (converter), FALSE); - g_return_val_if_fail (GST_IS_BUFFER (buffer), FALSE); - return GST_SURFACE_CONVERTER_GET_IFACE (converter)->upload (converter, - buffer); -} diff --git a/gst-libs/gst/video/gstsurfaceconverter.h b/gst-libs/gst/video/gstsurfaceconverter.h deleted file mode 100644 index 455143884..000000000 --- a/gst-libs/gst/video/gstsurfaceconverter.h +++ /dev/null @@ -1,65 +0,0 @@ -/* GStreamer - * Copyright (C) 2011 Collabora Ltd. - * Copyright (C) 2011 Intel - * - * Author: Nicolas Dufresne <nicolas.dufresne@collabora.com> - * - * 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. - */ - -#ifndef _GST_SURFACE_CONVERTER_H_ -#define _GST_SURFACE_CONVERTER_H_ - -#ifndef GST_USE_UNSTABLE_API -#warning "GstSurfaceConverter is unstable API and may change in future." -#warning "You can define GST_USE_UNSTABLE_API to avoid this warning." -#endif - -#include <gst/gst.h> - -G_BEGIN_DECLS - -#define GST_TYPE_SURFACE_CONVERTER (gst_surface_converter_get_type ()) -#define GST_SURFACE_CONVERTER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SURFACE_CONVERTER, GstSurfaceConverter)) -#define GST_IS_SURFACE_CONVERTER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SURFACE_CONVERTER)) -#define GST_SURFACE_CONVERTER_GET_IFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_SURFACE_CONVERTER, GstSurfaceConverterInterface)) - -typedef struct _GstSurfaceConverter GstSurfaceConverter; -typedef struct _GstSurfaceConverterInterface GstSurfaceConverterInterface; - -/** - * GstSurfaceConverterInterface: - * @parent: parent interface type. - * @upload: vmethod to upload #GstSurfaceBuffer. - * - * #GstSurfaceConverterInterface interface. - */ -struct _GstSurfaceConverterInterface -{ - GTypeInterface parent; - - gboolean (*upload) (GstSurfaceConverter *converter, - GstBuffer *buffer); -}; - -GType gst_surface_converter_get_type (void); - -gboolean gst_surface_converter_upload (GstSurfaceConverter *converter, - GstBuffer *buffer); - -G_END_DECLS - -#endif diff --git a/gst-libs/gst/video/gstsurfacemeta.c b/gst-libs/gst/video/gstsurfacemeta.c deleted file mode 100644 index bf091bd06..000000000 --- a/gst-libs/gst/video/gstsurfacemeta.c +++ /dev/null @@ -1,96 +0,0 @@ -/* GStreamer - * Copyright (C) 2011 Collabora Ltd. - * Copyright (C) 2011 Intel - * - * Author: Nicolas Dufresne <nicolas.dufresne@collabora.com> - * - * 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 - -#include "gstsurfacemeta.h" - -/** - * SECTION:gstsurfacemeta - * @short_description: Accelerated surface metadata - * - * This meta data is used to abstract hardware accelerated buffers and enable - * generic convertion to standard type such as GL textures. The media type for - * those buffers is defined by #GST_VIDEO_CAPS_SURFACE. An implementation - * specific type must be set using the "type" key (e.g. type="vaapi"). - * Available convertion type are speficied using seperate boolean - * arguement (e.g. opengl=true). Having this information in the capabilities - * allow easy negotiating of such feature with other elements (e.g. a - * ClutterGstVideoSink can claim accpeting caps "video/x-surface,opengl=true"). - * <note> - * The GstSurfaceMeta interface is unstable API and may change in future. - * One can define GST_USE_UNSTABLE_API to acknowledge and avoid this warning. - * </note> - */ - -GType -gst_surface_meta_api_get_type (void) -{ - static volatile GType type; - static const gchar *tags[] = { "memory", NULL }; - - if (g_once_init_enter (&type)) { - GType _type = gst_meta_api_type_register ("GstSurfaceMetaAPI", tags); - g_once_init_leave (&type, _type); - } - return type; -} - -const GstMetaInfo * -gst_surface_meta_get_info (void) -{ - static const GstMetaInfo *meta_info = NULL; - - if (g_once_init_enter (&meta_info)) { - const GstMetaInfo *meta = - gst_meta_register (GST_SURFACE_META_API_TYPE, "GstSurfaceMeta", - sizeof (GstSurfaceMeta), - (GstMetaInitFunction) NULL, - (GstMetaFreeFunction) NULL, (GstMetaTransformFunction) NULL); - g_once_init_leave (&meta_info, meta); - } - return meta_info; -} - -/** - * gst_surface_meta_create_converter: - * @meta: a #GstSurfaceMeta - * @type: the type to convert to - * @dest: a #GValue containing the destination to upload - * - * This method is used to create a type specific converter. The converter will - * serve as context to accelerate the data convertion. This converter object - * shall be discarded when the pipeline state changes to NULL and renewed when - * caps are changed. - * - * Returns: newly allocated #GstSurfaceConverter - */ -GstSurfaceConverter * -gst_surface_meta_create_converter (GstSurfaceMeta * meta, - const gchar * type, GValue * dest) -{ - g_return_val_if_fail (meta != NULL, FALSE); - - return meta->create_converter (meta, type, dest); -} diff --git a/gst-libs/gst/video/gstsurfacemeta.h b/gst-libs/gst/video/gstsurfacemeta.h deleted file mode 100644 index b00e3644b..000000000 --- a/gst-libs/gst/video/gstsurfacemeta.h +++ /dev/null @@ -1,68 +0,0 @@ -/* GStreamer - * Copyright (C) 2011 Collabora Ltd. - * Copyright (C) 2011 Intel - * - * Author: Nicolas Dufresne <nicolas.dufresne@collabora.com> - * - * 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. - */ - -#ifndef _GST_SURFACE_META_H_ -#define _GST_SURFACE_META_H_ - -#ifndef GST_USE_UNSTABLE_API -#warning "GstSurfaceMeta is unstable API and may change in future." -#warning "You can define GST_USE_UNSTABLE_API to avoid this warning." -#endif - -#include <gst/gst.h> -#include <gst/video/gstsurfaceconverter.h> - -G_BEGIN_DECLS - -typedef struct _GstSurfaceMeta GstSurfaceMeta; - -/** - * GstSurfaceMeta: - * @create_converter: vmethod to create a converter. - * - */ -struct _GstSurfaceMeta { - GstMeta meta; - - GstSurfaceConverter * (*create_converter) (GstSurfaceMeta *meta, - const gchar *type, - GValue *dest); -}; - -GType gst_surface_meta_api_get_type (void); -#define GST_SURFACE_META_API_TYPE (gst_surface_meta_api_get_type()) - -const GstMetaInfo *gst_surface_meta_get_info (void); -#define GST_SURFACE_META_INFO (gst_surface_meta_get_info()) - -#define gst_buffer_get_surface_meta(b) \ - ((GstSurfaceMeta*)gst_buffer_get_meta((b),GST_SURFACE_META_API_TYPE)) -#define gst_buffer_add_surface_meta(b) \ - ((GstSurfaceMeta*)gst_buffer_add_meta((b),GST_SURFACE_META_INFO,NULL)) - -GstSurfaceConverter *gst_surface_meta_create_converter (GstSurfaceMeta *meta, - const gchar *type, - GValue *dest); - -G_END_DECLS - -#endif diff --git a/gst-libs/gst/video/videocontext.c b/gst-libs/gst/video/videocontext.c deleted file mode 100644 index 60a85af8c..000000000 --- a/gst-libs/gst/video/videocontext.c +++ /dev/null @@ -1,539 +0,0 @@ -/* GStreamer - * - * Copyright (C) 2011 Intel - * Copyright (C) 2011 Collabora Ltd. - * Author: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk> - * - * video-context.c: Video Context interface and helpers - * - * - * 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 - -#include "videocontext.h" - -/** - * SECTION:gstvideocontext - * @short_description: Interface to handle video library context - * - * The Video Context interface enable sharing video context (such as display - * name, X11 Display, VA-API Display, etc) between neighboor elements and the - * application. - * <note> - * The GstVideoContext interface is unstable API and may change in future. - * One can define GST_USE_UNSTABLE_API to acknowledge and avoid this warning. - * </note> - * - * <refsect2> - * <title>For Element</title> - * <para> - * This interface shall be implement by group of elements that need to share - * a specific video context (like VDPAU, LibVA, OpenGL elements) or by video - * sink in order to let the application select appropriate display information - * (like the X11 display name) when those sink are auto-plugged. - * </para> - * <para> - * Along with implementing the interface, elements will need to query - * neighboor elements or send message to the application when preparing - * the context (see gst_video_context_prepare()). They also need to reply - * to the neighboors element queries, so the context can be shared without - * the application help. - * </para> - * <para> - * Elements that are guarantied to have both upstream and downstream - * neighboors element implementing the #GstVideoContext (like the gloverlay - * element in gst-plugins-opengl) is not required to also implement the - * interface. Relying on neighboors query shall be sufficient (see - * gst_video_context_run_query()). - * </para> - * <para> - * The query is an application query with a structure name set to - * "prepare-video-context" and an array of supported video context types set - * in the field named "types". This query shall be send downstream and - * upstream, iterating the pads in order to find neighboors regardless of a - * static (sink to src) or a dynamic (src to sink) activation. Element should - * used the helpers method gst_video_context_prepare() (or - * gst_video_context_run_query() if no GstVideoContext interface) to - * correctly execute the query . The result is set using the query helper - * functions, the structures fields name being "video-context-type" as - * string and "video-context" as a #GValue. - * </para> - * <para> - * If the query is not handled by any neighboor, the element should ask the - * application using the "prepare-video-context" message. The application - * may then use the interface to set the video context information. If no - * context was set, the element shall create one using default configuration. - * Elements with multiple src or sink pad shall implement proper locking to - * prevent the race of parallel queries being replied. - * </para> - * <para> - * Well known video-context are: "x11-display-name" a string representing the - * X11 display to use, "x11-display" the X11 Display structure, "va-display", - * the VADisplay structure and more. - * </para> - * </refsect2> - * - * <refsect2> - * <title>For Application</title> - * <para> - * In the case there is no neighboor element with video context to share, - * the element will first turn toward the application, by sending a - * "prepare-video-context" message. This message is sent along with a list - * of supported display types. The application can optionally reply to this - * message by calling appropriate setter through the #GstVideoContext - * interface. If the application supports more then one video context type, - * it should choose the first one to occure in the supported list. It's - * important to remember that the message is delivered from the streaming - * thread, and appropriate locking should be considered. If the application - * does not have a video context to share, the element will simply allocate - * one base on default settings. Usually, only applications using OpenGL - * base sink, or running on special X11 display need to share a video context. - * <note> - * Applications sharing X11 Display structure should always initialize the - * X11 threading support using XInitThreads() as GStreamer will need to - * manipulate the display from a separeate threads. - * </note> - * </para> - * <refsect2> - * <title>Example using ClutterVideoGstVideoSink</title> - * <para> - * This example is for user of ClutterGstVideoSink element, the - * ClutterGstPlayer object transparently handle this. - * </para> - * |[ - * #if CLUTTER_WINDOWING_X11 - * static GstBusSyncReply - * on_sync_message (GstBus * bus, GstMessage * message, gpointer user_data) - * { - * Display *display = user_data; - * GstVideoContext *context; - * const gchar **types; - * - * if (gst_video_context_message_parse_prepare (message, &types, &context)) { - * gint i; - * - * for (i = 0; types[i]; i++) { - * - * if (!strcmp(types[i], "x11-display")) { - * gst_video_context_set_context_pointer (context, "x11-display", display); - * } - * else if (!strcmp(types[i], "x11-display-name")) { - * gst_video_context_set_context_string (context, "x11-display-name", - * DisplayString (display)); - * } else { - * continue; - * } - * - * gst_message_unref (message); - * return GST_BUS_DROP; - * } - * } - * - * return GST_BUS_PASS; - * } - * #endif - * - * gint - * main (gint argc, gchar **argv) - * { - * GstBin *pipeline; - * GstBus *bus; - * - * ... - * - * bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); - * - * #if CLUTTER_WINDOWING_X11 - * gst_bus_set_sync_handler (priv->bus, on_sync_message, - * clutter_x11_get_default_display (), NULL); - * #endif - * - * gst_object_unref (GST_OBJECT (priv->bus)); - * - * ... - * } - * ]| - * </refsect2> - * </refsect2> - */ - -G_DEFINE_INTERFACE (GstVideoContext, gst_video_context_iface, G_TYPE_INVALID); - -static inline GstStructure * -gst_video_context_new_structure (const gchar ** types) -{ - return gst_structure_new ("prepare-video-context", - "types", G_TYPE_STRV, types, NULL); -} - -static gboolean -gst_video_context_pad_query (const GValue * item, GValue * value, - gpointer user_data) -{ - GstPad *pad = g_value_get_object (item); - GstQuery *query = user_data; - gboolean res; - - res = gst_pad_peer_query (pad, query); - - if (res) { - g_value_set_boolean (value, TRUE); - return FALSE; - } - - return TRUE; -} - -static void -gst_video_context_iface_default_init (GstVideoContextInterface * iface) -{ - /* default virtual functions */ - iface->set_context = NULL; -} - -/** - * gst_video_context_set_context: - * @context: an element implementing #GstVideoContext - * @type: the type of display being set - * @value: a #GValue containing the context - * - * This is a wrapper for the set_context() virtual method. It is suggested to - * use one of the helpers to avoid having to manipulate #GValue - */ -void -gst_video_context_set_context (GstVideoContext * context, const gchar * type, - const GValue * value) -{ - g_return_if_fail (GST_IS_VIDEO_CONTEXT (context)); - g_return_if_fail (GST_VIDEO_CONTEXT_GET_IFACE (context)->set_context); - - GST_VIDEO_CONTEXT_GET_IFACE (context)->set_context (context, type, value); -} - -/** - * gst_video_context_set_context_string: - * @context: an element implementing #GstVideoContext - * @type: the type of display being set - * @string: a string representing the video context - * - * This helper is commonly used for setting video context represented by a - * string like the X11 display name ("x11-display-name")/ - */ -void -gst_video_context_set_context_string (GstVideoContext * context, - const gchar * type, const gchar * string) -{ - GValue value = { 0 }; - g_value_init (&value, G_TYPE_STRING); - g_value_set_string (&value, string); - gst_video_context_set_context (context, type, &value); - g_value_unset (&value); -} - -/** - * gst_video_context_set_context_pointer: - * @context: an element implementing #GstVideoContext - * @type: the type of display being set - * @pointer: a pointer to the video context - * - * This helper is used for setting video context using a pointer, typically to - * a structure like the X11 Display ("x11-display") or the VADisplay - * ("vaapi-display"). - * <note> - * Users of X11 Display should ensure that XInitThreads() was called before - * opening the display. - * </note> - */ -void -gst_video_context_set_context_pointer (GstVideoContext * context, - const gchar * type, gpointer pointer) -{ - GValue value = { 0 }; - g_value_init (&value, G_TYPE_POINTER); - g_value_set_pointer (&value, pointer); - gst_video_context_set_context (context, type, &value); - g_value_unset (&value); -} - -/** - * gst_video_context_set_context_object: - * @context: an element implementing #GstVideoContext - * @type: the type of display being set - * @object: a #GObject resenting the display - * - * This is for video context that are #GObject, this helper allow taking - * benifit of the #GObject refcounting. It is particularly handy for element - * to have refcounting as the order in which element will stop using the - * display is not defined. - */ -void -gst_video_context_set_context_object (GstVideoContext * context, - const gchar * type, GObject * object) -{ - GValue value = { 0 }; - g_return_if_fail (G_IS_OBJECT (object)); - g_value_init (&value, G_TYPE_OBJECT); - g_value_set_object (&value, object); - gst_video_context_set_context (context, type, &value); - g_value_unset (&value); -} - -/** - * gst_video_context_prepare: - * @context: an element implementing #GstVideoContext interface - * @types: an array of supported types, prefered first - * - * This method run "prepare-video-context" custom query dowstream, and - * upstream. If * the query has a reply, it sets the context value using - * gst_video_context_set_context(). Otherwise, it sends a - * "prepare-video-context" message to the application. The element can then - * continue video context initialization. - */ -void -gst_video_context_prepare (GstVideoContext * context, const gchar ** types) -{ - GstQuery *query = gst_video_context_query_new (types); - - /* Check neighborhood, if found call GstVideoContext */ - if (gst_video_context_run_query (GST_ELEMENT (context), query)) { - const gchar *type = NULL; - const GValue *value; - gst_video_context_query_parse_value (query, &type, &value); - gst_video_context_set_context (context, type, value); - } else { - /* If no neighbor replyed, query the application */ - GstMessage *message; - GstStructure *structure; - - structure = gst_video_context_new_structure (types); - message = gst_message_new_element (GST_OBJECT (context), structure); - gst_element_post_message (GST_ELEMENT (context), message); - } - - gst_query_unref (query); -} - -/** - * gst_video_context_message_parse_prepare: - * @message: a #GstMessage - * @types: return value for supported types - * @context: return value for the element the implements #GstVideoContext - * - * This helper shall be used by application to simply handling of the - * "prepare-video-context" message. - * - * Rerturns: #FALSE is the message was not valid "prepare-video-context" - * element message, otherwise #TRUE with @types and @context set. - */ -gboolean -gst_video_context_message_parse_prepare (GstMessage * message, - const gchar *** types, GstVideoContext ** context) -{ - GstObject *src = GST_MESSAGE_SRC (message); - const GstStructure *structure; - const GValue *value; - - if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT) - return FALSE; - - if (!gst_message_has_name (message, "prepare-video-context")) - return FALSE; - - if (!GST_IS_VIDEO_CONTEXT (src)) - return FALSE; - - structure = gst_message_get_structure (message); - value = gst_structure_get_value (structure, "types"); - - if (!G_VALUE_HOLDS (value, G_TYPE_STRV)) - return FALSE; - - if (types) - *types = g_value_get_boxed (value); - - if (context) - *context = GST_VIDEO_CONTEXT (src); - - return TRUE; -} - -/** - * gst_video_context_query_new: - * @types: a string array of video context types - * - * Create a new custom #GstQuery with structure name "prepare-video-context". - */ -GstQuery * -gst_video_context_query_new (const gchar ** types) -{ - GstStructure *structure = gst_video_context_new_structure (types); - return gst_query_new_custom (GST_QUERY_CUSTOM, structure); -} - -/** - * gst_video_context_run_query: - * @element: a #GstElement - * @query: a #GstQuery - * - * This helper runs the query on each downstream, then upstream pads in an - * element. This is called by gst_video_context_prepare(). This method is only - * used directly within elements that are required to have two neighboors - * elements with appropriate video context. This would be the case of - * specialized filters that only manipulate non-raw buffers (e.g. - * gldeinterlace). Those elements do not have to implement #GstVideoContext - * interface. - */ -gboolean -gst_video_context_run_query (GstElement * element, GstQuery * query) -{ - GstIterator *it; - GstIteratorFoldFunction func = gst_video_context_pad_query; - GValue res = { 0 }; - - g_value_init (&res, G_TYPE_BOOLEAN); - g_value_set_boolean (&res, FALSE); - - /* Ask downstream neighbor (mainly static pipeline case) */ - it = gst_element_iterate_src_pads (element); - - while (gst_iterator_fold (it, func, &res, query) == GST_ITERATOR_RESYNC) - gst_iterator_resync (it); - - gst_iterator_free (it); - - /* If none, ask upstream neighbor (auto-plugged case) */ - if (!g_value_get_boolean (&res)) { - it = gst_element_iterate_sink_pads (element); - - while (gst_iterator_fold (it, func, &res, query) == GST_ITERATOR_RESYNC) - gst_iterator_resync (it); - - gst_iterator_free (it); - } - - return g_value_get_boolean (&res); -} - -/** - * gst_video_context_query_get_supported_types: - * @query: a #GstQuery - * - * Returns: An array of supported video context types - */ -const gchar ** -gst_video_context_query_get_supported_types (GstQuery * query) -{ - const GstStructure *structure = gst_query_get_structure (query); - const GValue *value = gst_structure_get_value (structure, "types"); - - if (G_VALUE_HOLDS (value, G_TYPE_STRV)) - return g_value_get_boxed (value); - - return NULL; -} - -/** - * gst_video_context_query_parse_value: - * @query: a #GstQuery - * @type: return video context type - * @value: return video context #GValue - * - * Helper to extract the video context type and value from a #GstQuery. - */ -void -gst_video_context_query_parse_value (GstQuery * query, const gchar ** type, - const GValue ** value) -{ - const GstStructure *structure = gst_query_get_structure (query); - - if (type) - *type = gst_structure_get_string (structure, "video-context-type"); - - if (value) - *value = gst_structure_get_value (structure, "video-context"); -} - -/** - * gst_video_context_query_set_value: - * @query: a #GstQuery - * @type: the video context type - * @value: a #GValue set with video context - * - * Helper to set the video context as a #GValue inside the #GstQuery. - */ -void -gst_video_context_query_set_value (GstQuery * query, const gchar * type, - GValue * value) -{ - GstStructure *structure = gst_query_writable_structure (query); - gst_structure_set (structure, "video-context-type", G_TYPE_STRING, type, - "video-context", G_TYPE_VALUE, value, NULL); -} - -/** - * gst_video_context_query_set_string: - * @query: a #GstQuery - * @type: the video context type - * @value: a string representing the video context - * - * Helper to set the video context as a string inside the #GstQuery. - */ -void -gst_video_context_query_set_string (GstQuery * query, const gchar * type, - const gchar * value) -{ - GstStructure *structure = gst_query_writable_structure (query); - gst_structure_set (structure, "video-context-type", G_TYPE_STRING, type, - "video-context", G_TYPE_STRING, value, NULL); -} - -/** - * gst_video_context_query_set_pointer: - * @query: a #GstQuery - * @type: the video context type - * @value: a #gpointer representing the video context - * - * Helper to set the video context as a #gpointer inside the #GstQuery. - */ -void -gst_video_context_query_set_pointer (GstQuery * query, const gchar * type, - gpointer value) -{ - GstStructure *structure = gst_query_writable_structure (query); - gst_structure_set (structure, "video-context-type", G_TYPE_STRING, type, - "video-context", G_TYPE_POINTER, value, NULL); -} - -/** - * gst_video_context_query_set_object: - * @query: a #GstQuery - * @type: the video context type - * @value: a #GObject representing the video context - * - * Helper to set the video context as a #GObject inside the #GstQuery. - */ -void -gst_video_context_query_set_object (GstQuery * query, const gchar * type, - GObject * value) -{ - GstStructure *structure = gst_query_writable_structure (query); - gst_structure_set (structure, "video-context-type", G_TYPE_STRING, type, - "video-context", G_TYPE_OBJECT, value, NULL); -} diff --git a/gst-libs/gst/video/videocontext.h b/gst-libs/gst/video/videocontext.h deleted file mode 100644 index c094cedd3..000000000 --- a/gst-libs/gst/video/videocontext.h +++ /dev/null @@ -1,117 +0,0 @@ -/* GStreamer - * - * Copyright (C) 2011 Intel - * Copyright (C) 2011 Collabora Ltd. - * Author: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk> - * - * video-context.h: Video Context interface and helpers - * - * - * 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. - */ - -#ifndef __GST_VIDEO_CONTEXT_H__ -#define __GST_VIDEO_CONTEXT_H__ - -#ifndef GST_USE_UNSTABLE_API -#warning "The GstVideoContext interface is unstable API and may change in future." -#warning "You can define GST_USE_UNSTABLE_API to avoid this warning." -#endif - -#include <gst/gst.h> - -G_BEGIN_DECLS - -#define GST_TYPE_VIDEO_CONTEXT (gst_video_context_iface_get_type ()) -#define GST_VIDEO_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VIDEO_CONTEXT, GstVideoContext)) -#define GST_IS_VIDEO_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VIDEO_CONTEXT)) -#define GST_VIDEO_CONTEXT_GET_IFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_VIDEO_CONTEXT, GstVideoContextInterface)) - -/** - * GstVideoContext: - * - * Opaque #GstVideoContext data structure. - */ -typedef struct _GstVideoContext GstVideoContext; -typedef struct _GstVideoContextInterface GstVideoContextInterface; - -/** - * GstVideoContextInterface: - * @parent: parent interface type. - * @set_context: vmethod to set video context. - * - * #GstVideoContextInterface interface. - */ -struct _GstVideoContextInterface -{ - GTypeInterface parent; - - /* virtual functions */ - void (*set_context) (GstVideoContext * context, - const gchar * type, - const GValue * value); - -}; - -GType gst_video_context_iface_get_type (void); - -/* virtual class method and associated helpers */ -void gst_video_context_set_context (GstVideoContext * context, - const gchar * type, - const GValue * value); -void gst_video_context_set_context_string (GstVideoContext * context, - const gchar * type, - const gchar * value); -void gst_video_context_set_context_pointer (GstVideoContext * context, - const gchar * type, - gpointer value); -void gst_video_context_set_context_object (GstVideoContext * context, - const gchar * type, - GObject * value); - - -/* message helpers */ -void gst_video_context_prepare (GstVideoContext *context, - const gchar ** types); - -gboolean gst_video_context_message_parse_prepare (GstMessage * message, - const gchar *** types, - GstVideoContext ** ctx); - -/* query helpers */ -GstQuery * gst_video_context_query_new (const gchar ** types); -gboolean gst_video_context_run_query (GstElement *element, - GstQuery *query); -const gchar ** gst_video_context_query_get_supported_types (GstQuery * query); -void gst_video_context_query_parse_value (GstQuery * query, - const gchar ** type, - const GValue ** value); -void gst_video_context_query_set_value (GstQuery * query, - const gchar * type, - GValue * value); -void gst_video_context_query_set_string (GstQuery * query, - const gchar * type, - const gchar * value); -void gst_video_context_query_set_pointer (GstQuery * query, - const gchar * type, - gpointer value); -void gst_video_context_query_set_object (GstQuery * query, - const gchar * type, - GObject * value); - -G_END_DECLS - -#endif /* __GST_VIDEO_CONTEXT_H__ */ |