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81b7470ab8
Use the pool_lock in the buffer_alloc function to detect shutdown. Avoids crashes when the sink is shutdown.
296 lines
8.5 KiB
C
296 lines
8.5 KiB
C
/* GStreamer
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* Copyright (C) <2005> Julien Moutte <julien@moutte.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_XVIMAGESINK_H__
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#define __GST_XVIMAGESINK_H__
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#include <gst/video/gstvideosink.h>
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#ifdef HAVE_XSHM
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#endif /* HAVE_XSHM */
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#ifdef HAVE_XSHM
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#include <X11/extensions/XShm.h>
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#endif /* HAVE_XSHM */
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#include <X11/extensions/Xv.h>
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#include <X11/extensions/Xvlib.h>
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#include <string.h>
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#include <math.h>
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#include <stdlib.h>
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G_BEGIN_DECLS
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#define GST_TYPE_XVIMAGESINK \
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(gst_xvimagesink_get_type())
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#define GST_XVIMAGESINK(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_XVIMAGESINK, GstXvImageSink))
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#define GST_XVIMAGESINK_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_XVIMAGESINK, GstXvImageSinkClass))
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#define GST_IS_XVIMAGESINK(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_XVIMAGESINK))
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#define GST_IS_XVIMAGESINK_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_XVIMAGESINK))
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typedef struct _GstXContext GstXContext;
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typedef struct _GstXWindow GstXWindow;
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typedef struct _GstXvImageFormat GstXvImageFormat;
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typedef struct _GstXvImageBuffer GstXvImageBuffer;
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typedef struct _GstXvImageBufferClass GstXvImageBufferClass;
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typedef struct _GstXvImageSink GstXvImageSink;
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typedef struct _GstXvImageSinkClass GstXvImageSinkClass;
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/*
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* GstXContext:
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* @disp: the X11 Display of this context
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* @screen: the default Screen of Display @disp
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* @screen_num: the Screen number of @screen
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* @visual: the default Visual of Screen @screen
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* @root: the root Window of Display @disp
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* @white: the value of a white pixel on Screen @screen
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* @black: the value of a black pixel on Screen @screen
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* @depth: the color depth of Display @disp
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* @bpp: the number of bits per pixel on Display @disp
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* @endianness: the endianness of image bytes on Display @disp
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* @width: the width in pixels of Display @disp
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* @height: the height in pixels of Display @disp
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* @widthmm: the width in millimeters of Display @disp
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* @heightmm: the height in millimeters of Display @disp
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* @par: the pixel aspect ratio calculated from @width, @widthmm and @height,
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* @heightmm ratio
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* @use_xshm: used to known wether of not XShm extension is usable or not even
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* if the Extension is present
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* @xv_port_id: the XVideo port ID
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* @im_format: used to store at least a valid format for XShm calls checks
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* @formats_list: list of supported image formats on @xv_port_id
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* @channels_list: list of #GstColorBalanceChannels
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* @caps: the #GstCaps that Display @disp can accept
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*
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* Structure used to store various informations collected/calculated for a
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* Display.
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*/
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struct _GstXContext {
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Display *disp;
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Screen *screen;
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gint screen_num;
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Visual *visual;
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Window root;
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gulong white, black;
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gint depth;
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gint bpp;
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gint endianness;
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gint width, height;
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gint widthmm, heightmm;
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GValue *par; /* calculated pixel aspect ratio */
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gboolean use_xshm;
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XvPortID xv_port_id;
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guint nb_adaptors;
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gchar ** adaptors;
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gint im_format;
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GList *formats_list;
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GList *channels_list;
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GstCaps *caps;
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/* Optimisation storage for buffer_alloc return */
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GstCaps *last_caps;
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gint last_format;
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gint last_width;
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gint last_height;
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};
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/*
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* GstXWindow:
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* @win: the Window ID of this X11 window
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* @width: the width in pixels of Window @win
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* @height: the height in pixels of Window @win
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* @internal: used to remember if Window @win was created internally or passed
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* through the #GstXOverlay interface
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* @gc: the Graphical Context of Window @win
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*
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* Structure used to store informations about a Window.
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*/
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struct _GstXWindow {
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Window win;
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gint width, height;
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gboolean internal;
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GC gc;
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};
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/**
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* GstXvImageFormat:
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* @format: the image format
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* @caps: generated #GstCaps for this image format
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*
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* Structure storing image format to #GstCaps association.
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*/
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struct _GstXvImageFormat {
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gint format;
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GstCaps *caps;
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};
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/**
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* GstXImageBuffer:
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* @xvimagesink: a reference to our #GstXvImageSink
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* @xvimage: the XvImage of this buffer
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* @width: the width in pixels of XvImage @xvimage
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* @height: the height in pixels of XvImage @xvimage
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* @im_format: the image format of XvImage @xvimage
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* @size: the size in bytes of XvImage @xvimage
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*
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* Subclass of #GstBuffer containing additional information about an XvImage.
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*/
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struct _GstXvImageBuffer {
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GstBuffer buffer;
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/* Reference to the xvimagesink we belong to */
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GstXvImageSink *xvimagesink;
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XvImage *xvimage;
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#ifdef HAVE_XSHM
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XShmSegmentInfo SHMInfo;
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#endif /* HAVE_XSHM */
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gint width, height, im_format;
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size_t size;
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};
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/**
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* GstXvImageSink:
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* @display_name: the name of the Display we want to render to
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* @xcontext: our instance's #GstXContext
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* @xwindow: the #GstXWindow we are rendering to
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* @xvimage: internal #GstXvImage used to store incoming buffers and render when
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* not using the buffer_alloc optimization mechanism
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* @cur_image: a reference to the last #GstXvImage that was put to @xwindow. It
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* is used when Expose events are received to redraw the latest video frame
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* @event_thread: a thread listening for events on @xwindow and handling them
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* @running: used to inform @event_thread if it should run/shutdown
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* @fps_n: the framerate fraction numerator
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* @fps_d: the framerate fraction denominator
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* @x_lock: used to protect X calls as we are not using the XLib in threaded
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* mode
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* @flow_lock: used to protect data flow routines from external calls such as
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* events from @event_thread or methods from the #GstXOverlay interface
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* @par: used to override calculated pixel aspect ratio from @xcontext
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* @pool_lock: used to protect the buffer pool
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* @image_pool: a list of #GstXvImageBuffer that could be reused at next buffer
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* allocation call
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* @synchronous: used to store if XSynchronous should be used or not (for
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* debugging purpose only)
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* @keep_aspect: used to remember if reverse negotiation scaling should respect
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* aspect ratio
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* @handle_events: used to know if we should handle select XEvents or not
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* @brightness: used to store the user settings for color balance brightness
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* @contrast: used to store the user settings for color balance contrast
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* @hue: used to store the user settings for color balance hue
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* @saturation: used to store the user settings for color balance saturation
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* @cb_changed: used to store if the color balance settings where changed
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* @video_width: the width of incoming video frames in pixels
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* @video_height: the height of incoming video frames in pixels
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*
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* The #GstXvImageSink data structure.
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*/
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struct _GstXvImageSink {
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/* Our element stuff */
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GstVideoSink videosink;
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char *display_name;
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guint adaptor_no;
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GstXContext *xcontext;
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GstXWindow *xwindow;
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GstXvImageBuffer *xvimage;
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GstXvImageBuffer *cur_image;
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GThread *event_thread;
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gboolean running;
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gint fps_n;
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gint fps_d;
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GMutex *x_lock;
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GMutex *flow_lock;
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/* object-set pixel aspect ratio */
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GValue *par;
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GMutex *pool_lock;
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gboolean pool_invalid;
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GSList *image_pool;
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gboolean synchronous;
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gboolean double_buffer;
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gboolean keep_aspect;
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gboolean redraw_border;
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gboolean handle_events;
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gboolean handle_expose;
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gint brightness;
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gint contrast;
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gint hue;
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gint saturation;
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gboolean cb_changed;
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/* size of incoming video, used as the size for XvImage */
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guint video_width, video_height;
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/* display sizes, used for clipping the image */
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gint disp_x, disp_y;
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gint disp_width, disp_height;
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/* port attributes */
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gboolean autopaint_colorkey;
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gint colorkey;
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gboolean draw_borders;
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/* port features */
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gboolean have_autopaint_colorkey;
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gboolean have_colorkey;
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gboolean have_double_buffer;
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};
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struct _GstXvImageSinkClass {
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GstVideoSinkClass parent_class;
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};
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GType gst_xvimagesink_get_type(void);
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G_END_DECLS
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#endif /* __GST_XVIMAGESINK_H__ */
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