--- /dev/null
+/* 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_XVIMAGESINK_H__
+#define __GST_XVIMAGESINK_H__
+
+#include <gst/video/gstvideosink.h>
+
+#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 <X11/extensions/Xv.h>
+#include <X11/extensions/Xvlib.h>
+
+#include <string.h>
+#include <math.h>
+#include <stdlib.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_XVIMAGESINK \
+ (gst_xvimagesink_get_type())
+#define GST_XVIMAGESINK(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_XVIMAGESINK, GstXvImageSink))
+#define GST_XVIMAGESINK_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_XVIMAGESINK, GstXvImageSinkClass))
+#define GST_IS_XVIMAGESINK(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_XVIMAGESINK))
+#define GST_IS_XVIMAGESINK_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_XVIMAGESINK))
+
+typedef struct _GstXContext GstXContext;
+typedef struct _GstXWindow GstXWindow;
+typedef struct _GstXvImageFormat GstXvImageFormat;
+typedef struct _GstXvImageBuffer GstXvImageBuffer;
+typedef struct _GstXvImageBufferClass GstXvImageBufferClass;
+
+typedef struct _GstXvImageSink GstXvImageSink;
+typedef struct _GstXvImageSinkClass GstXvImageSinkClass;
+
+/*
+ * GstXContext:
+ * @disp: the X11 Display of this context
+ * @screen: the default Screen of Display @disp
+ * @screen_num: the Screen number of @screen
+ * @visual: the default Visual of Screen @screen
+ * @root: the root Window of Display @disp
+ * @white: the value of a white pixel on Screen @screen
+ * @black: the value of a black pixel on Screen @screen
+ * @depth: the color depth of Display @disp
+ * @bpp: the number of bits per pixel on Display @disp
+ * @endianness: the endianness of image bytes on Display @disp
+ * @width: the width in pixels of Display @disp
+ * @height: the height in pixels of Display @disp
+ * @widthmm: the width in millimeters of Display @disp
+ * @heightmm: the height in millimeters of Display @disp
+ * @par: the pixel aspect ratio calculated from @width, @widthmm and @height,
+ * @heightmm ratio
+ * @use_xshm: used to known wether of not XShm extension is usable or not even
+ * if the Extension is present
+ * @xv_port_id: the XVideo port ID
+ * @im_format: used to store at least a valid format for XShm calls checks
+ * @formats_list: list of supported image formats on @xv_port_id
+ * @channels_list: list of #GstColorBalanceChannels
+ * @caps: the #GstCaps that Display @disp can accept
+ *
+ * Structure used to store various informations collected/calculated for a
+ * Display.
+ */
+struct _GstXContext {
+ Display *disp;
+
+ Screen *screen;
+ gint screen_num;
+
+ Visual *visual;
+
+ Window root;
+
+ gulong white, black;
+
+ gint depth;
+ gint bpp;
+ gint endianness;
+
+ gint width, height;
+ gint widthmm, heightmm;
+ GValue *par; /* calculated pixel aspect ratio */
+
+ gboolean use_xshm;
+
+ XvPortID xv_port_id;
+ guint nb_adaptors;
+ gchar ** adaptors;
+ gint im_format;
+
+ GList *formats_list;
+ GList *channels_list;
+
+ GstCaps *caps;
+
+ /* Optimisation storage for buffer_alloc return */
+ GstCaps *last_caps;
+ gint last_format;
+ gint last_width;
+ gint last_height;
+};
+
+/*
+ * GstXWindow:
+ * @win: the Window ID of this X11 window
+ * @width: the width in pixels of Window @win
+ * @height: the height in pixels of Window @win
+ * @internal: used to remember if Window @win was created internally or passed
+ * through the #GstXOverlay interface
+ * @gc: the Graphical Context of Window @win
+ *
+ * Structure used to store informations about a Window.
+ */
+struct _GstXWindow {
+ Window win;
+ gint width, height;
+ gboolean internal;
+ GC gc;
+};
+
+/**
+ * GstXvImageFormat:
+ * @format: the image format
+ * @caps: generated #GstCaps for this image format
+ *
+ * Structure storing image format to #GstCaps association.
+ */
+struct _GstXvImageFormat {
+ gint format;
+ GstCaps *caps;
+};
+
+/**
+ * GstXImageBuffer:
+ * @xvimagesink: a reference to our #GstXvImageSink
+ * @xvimage: the XvImage of this buffer
+ * @width: the width in pixels of XvImage @xvimage
+ * @height: the height in pixels of XvImage @xvimage
+ * @im_format: the image format of XvImage @xvimage
+ * @size: the size in bytes of XvImage @xvimage
+ *
+ * Subclass of #GstBuffer containing additional information about an XvImage.
+ */
+struct _GstXvImageBuffer {
+ GstBuffer buffer;
+
+ /* Reference to the xvimagesink we belong to */
+ GstXvImageSink *xvimagesink;
+
+ XvImage *xvimage;
+
+#ifdef HAVE_XSHM
+ XShmSegmentInfo SHMInfo;
+#endif /* HAVE_XSHM */
+
+ gint width, height, im_format;
+ size_t size;
+};
+
+/**
+ * GstXvImageSink:
+ * @display_name: the name of the Display we want to render to
+ * @xcontext: our instance's #GstXContext
+ * @xwindow: the #GstXWindow we are rendering to
+ * @xvimage: internal #GstXvImage used to store incoming buffers and render when
+ * not using the buffer_alloc optimization mechanism
+ * @cur_image: a reference to the last #GstXvImage that was put to @xwindow. It
+ * is used when Expose events are received to redraw the latest video frame
+ * @event_thread: a thread listening for events on @xwindow and handling them
+ * @running: used to inform @event_thread if it should run/shutdown
+ * @fps_n: the framerate fraction numerator
+ * @fps_d: the framerate fraction denominator
+ * @x_lock: used to protect X calls as we are not using the XLib in threaded
+ * mode
+ * @flow_lock: used to protect data flow routines from external calls such as
+ * events from @event_thread or methods from the #GstXOverlay interface
+ * @par: used to override calculated pixel aspect ratio from @xcontext
+ * @pool_lock: used to protect the buffer pool
+ * @image_pool: a list of #GstXvImageBuffer that could be reused at next buffer
+ * allocation call
+ * @synchronous: used to store if XSynchronous should be used or not (for
+ * debugging purpose only)
+ * @keep_aspect: used to remember if reverse negotiation scaling should respect
+ * aspect ratio
+ * @handle_events: used to know if we should handle select XEvents or not
+ * @brightness: used to store the user settings for color balance brightness
+ * @contrast: used to store the user settings for color balance contrast
+ * @hue: used to store the user settings for color balance hue
+ * @saturation: used to store the user settings for color balance saturation
+ * @cb_changed: used to store if the color balance settings where changed
+ * @video_width: the width of incoming video frames in pixels
+ * @video_height: the height of incoming video frames in pixels
+ *
+ * The #GstXvImageSink data structure.
+ */
+struct _GstXvImageSink {
+ /* Our element stuff */
+ GstVideoSink videosink;
+
+ char *display_name;
+ guint adaptor_no;
+
+ GstXContext *xcontext;
+ GstXWindow *xwindow;
+ GstXvImageBuffer *xvimage;
+ GstXvImageBuffer *cur_image;
+
+ GThread *event_thread;
+ gboolean running;
+
+ gint fps_n;
+ gint fps_d;
+
+ GMutex *x_lock;
+ GMutex *flow_lock;
+
+ /* object-set pixel aspect ratio */
+ GValue *par;
+
+ GMutex *pool_lock;
+ gboolean pool_invalid;
+ GSList *image_pool;
+
+ gboolean synchronous;
+ gboolean double_buffer;
+ gboolean keep_aspect;
+ gboolean redraw_border;
+ gboolean handle_events;
+ gboolean handle_expose;
+
+ gint brightness;
+ gint contrast;
+ gint hue;
+ gint saturation;
+ gboolean cb_changed;
+
+ /* size of incoming video, used as the size for XvImage */
+ guint video_width, video_height;
+
+ /* display sizes, used for clipping the image */
+ gint disp_x, disp_y;
+ gint disp_width, disp_height;
+
+ /* port attributes */
+ gboolean autopaint_colorkey;
+ gint colorkey;
+
+ gboolean draw_borders;
+
+ /* port features */
+ gboolean have_autopaint_colorkey;
+ gboolean have_colorkey;
+ gboolean have_double_buffer;
+
+ /* stream metadata */
+ gchar *media_title;
+
+ /* target video rectagle */
+ GstVideoRectangle render_rect;
+ gboolean have_render_rect;
+};
+
+struct _GstXvImageSinkClass {
+ GstVideoSinkClass parent_class;
+};
+
+GType gst_xvimagesink_get_type(void);
+
+G_END_DECLS
+
+#endif /* __GST_XVIMAGESINK_H__ */
projects / mafwsubrenderer / blobdiff