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47e7f3f367
Original commit message from CVS: * sys/xvimage/xvimagesink.c: (gst_xvimagesink_xcontext_clear), (gst_xvimagesink_buffer_alloc): * sys/xvimage/xvimagesink.h: When performing buffer allocations, remember the caps and image format we return so that if the same caps are asked for next time we can return them immediately without doing any caps intersections.
269 lines
7.9 KiB
C
269 lines
7.9 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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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, GstXvImageSink))
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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(obj) \
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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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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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};
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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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* @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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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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GSList *image_pool;
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gboolean synchronous;
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gboolean keep_aspect;
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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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guint video_width, video_height; /* size of incoming video;
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* used as the size for XvImage */
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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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