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Diffstat (limited to 'sys/ximagesrc/ximagesrc.c')
| -rw-r--r-- | sys/ximagesrc/ximagesrc.c | 829 |
1 files changed, 0 insertions, 829 deletions
diff --git a/sys/ximagesrc/ximagesrc.c b/sys/ximagesrc/ximagesrc.c deleted file mode 100644 index 2320001f..00000000 --- a/sys/ximagesrc/ximagesrc.c +++ /dev/null @@ -1,829 +0,0 @@ -/* GStreamer - * - * Copyright (C) 2006 Zaheer Merali <zaheerabbas at merali dot org> - * - * 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. - */ - -/** - * SECTION:element-ximagesrc - * @short_description: a source that captures your X Display - * - * <refsect2> - * <para> - * This element captures your X Display and creates raw RGB video. It uses - * the XDamage extension if available to only capture areas of the screen that - * have changed since the last frame. It uses the XFixes extension if - * available to also capture your mouse pointer. By default it will fixate to - * 25 frames per second. - * </para> - * <title>Example pipelines</title> - * <para> - * <programlisting> - * gst-launch -v ximagesrc ! video/x-raw-rgb,framerate=5/1 ! ffmpegcolorspace ! theoraenc ! oggmux ! filesink location=desktop.ogg - * </programlisting> - * Encodes your X display to an Ogg theora video at 5 frames per second. - * </para> - * </refsect2> - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif -#include "ximagesrc.h" - -#include <string.h> -#include <stdlib.h> - -#include <X11/Xlib.h> -#include <X11/Xutil.h> - -#include <gst/gst.h> -#include <gst/gst-i18n-plugin.h> - -GST_DEBUG_CATEGORY_STATIC (gst_debug_ximage_src); -#define GST_CAT_DEFAULT gst_debug_ximage_src - -/* elementfactory information */ -static const GstElementDetails ximagesrc_details = -GST_ELEMENT_DETAILS ("Ximage video source", - "Source/Video", - "Creates a screenshot video stream", - "Lutz Mueller <lutz@users.sourceforge.net>, " - "Jan Schmidt <thaytan@mad.scientist.com>, " - "Zaheer Merali <zaheerabbas at merali dot org>"); - -static GstStaticPadTemplate t = -GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, - GST_STATIC_CAPS ("video/x-raw-rgb, " - "framerate = (fraction) [ 0, MAX ], " - "width = (int) [ 1, MAX ], " "height = (int) [ 1, MAX ], " - "pixel-aspect-ratio = (fraction) [ 0, MAX ]")); - -enum -{ - PROP_0, - PROP_DISPLAY_NAME, - PROP_SCREEN_NUM, - PROP_SHOW_POINTER -}; - -GST_BOILERPLATE (GstXImageSrc, gst_ximage_src, GstPushSrc, GST_TYPE_PUSH_SRC); - -static void gst_ximage_src_fixate (GstPad * pad, GstCaps * caps); -static void gst_ximage_src_clear_bufpool (GstXImageSrc * ximagesrc); - -/* Called when a buffer is returned from the pipeline */ -static void -gst_ximage_src_return_buf (GstXImageSrc * ximagesrc, - GstXImageSrcBuffer * ximage) -{ - /* If our geometry changed we can't reuse that image. */ - if ((ximage->width != ximagesrc->width) || - (ximage->height != ximagesrc->height)) { - GST_DEBUG_OBJECT (ximagesrc, - "destroy image %p as its size changed %dx%d vs current %dx%d", - ximage, ximage->width, ximage->height, - ximagesrc->width, ximagesrc->height); - g_mutex_lock (ximagesrc->x_lock); - gst_ximageutil_ximage_destroy (ximagesrc->xcontext, ximage); - g_mutex_unlock (ximagesrc->x_lock); - } else { - /* In that case we can reuse the image and add it to our image pool. */ - GST_LOG_OBJECT (ximagesrc, "recycling image %p in pool", ximage); - /* need to increment the refcount again to recycle */ - gst_buffer_ref (GST_BUFFER (ximage)); - g_mutex_lock (ximagesrc->pool_lock); - ximagesrc->buffer_pool = g_slist_prepend (ximagesrc->buffer_pool, ximage); - g_mutex_unlock (ximagesrc->pool_lock); - } -} - -static gboolean -gst_ximage_src_open_display (GstXImageSrc * s, const gchar * name) -{ - g_return_val_if_fail (GST_IS_XIMAGE_SRC (s), FALSE); - - if (s->xcontext != NULL) - return TRUE; - - g_mutex_lock (s->x_lock); - s->xcontext = ximageutil_xcontext_get (GST_ELEMENT (s), name); - s->width = s->xcontext->width; - s->height = s->xcontext->height; - - /* Always capture root window, for now */ - s->xwindow = s->xcontext->root; - -#ifdef HAVE_XFIXES - /* check if xfixes supported */ - { - int error_base; - - if (XFixesQueryExtension (s->xcontext->disp, &s->fixes_event_base, - &error_base)) { - s->have_xfixes = TRUE; - GST_DEBUG_OBJECT (s, "X Server supports XFixes"); - } else { - - GST_DEBUG_OBJECT (s, "X Server does not support XFixes"); - } - } - -#ifdef HAVE_XDAMAGE - /* check if xdamage is supported */ - { - int error_base; - long evmask = NoEventMask; - - if (XDamageQueryExtension (s->xcontext->disp, &s->damage_event_base, - &error_base)) { - s->damage = - XDamageCreate (s->xcontext->disp, s->xwindow, - XDamageReportRawRectangles); - if (s->damage != None) { - s->damage_region = XFixesCreateRegion (s->xcontext->disp, NULL, 0); - if (s->damage_region != None) { - XGCValues values; - - GST_DEBUG_OBJECT (s, "Using XDamage extension"); - values.subwindow_mode = IncludeInferiors; - s->damage_copy_gc = XCreateGC (s->xcontext->disp, - s->xwindow, GCSubwindowMode, &values); - XSelectInput (s->xcontext->disp, s->xwindow, evmask); - - s->have_xdamage = TRUE; - } else { - XDamageDestroy (s->xcontext->disp, s->damage); - s->damage = None; - } - } else - GST_DEBUG_OBJECT (s, "Could not attach to XDamage"); - } else { - GST_DEBUG_OBJECT (s, "X Server does not have XDamage extension"); - } - } -#endif -#endif - - g_mutex_unlock (s->x_lock); - - if (s->xcontext == NULL) - return FALSE; - - return TRUE; -} - -static gboolean -gst_ximage_src_start (GstBaseSrc * basesrc) -{ - GstXImageSrc *s = GST_XIMAGE_SRC (basesrc); - - s->last_frame_no = -1; - - return gst_ximage_src_open_display (s, NULL); -} - -static gboolean -gst_ximage_src_stop (GstBaseSrc * basesrc) -{ - GstXImageSrc *src = GST_XIMAGE_SRC (basesrc); - - gst_ximage_src_clear_bufpool (src); - - if (src->xcontext) { - g_mutex_lock (src->x_lock); - ximageutil_xcontext_clear (src->xcontext); - src->xcontext = NULL; - g_mutex_unlock (src->x_lock); - } - - return TRUE; -} - -static gboolean -gst_ximage_src_unlock (GstBaseSrc * basesrc) -{ - GstXImageSrc *src = GST_XIMAGE_SRC (basesrc); - - /* Awaken the create() func if it's waiting on the clock */ - GST_OBJECT_LOCK (src); - if (src->clock_id) { - GST_DEBUG_OBJECT (src, "Waking up waiting clock"); - gst_clock_id_unschedule (src->clock_id); - } - GST_OBJECT_UNLOCK (src); - - return TRUE; -} - -static gboolean -gst_ximage_src_recalc (GstXImageSrc * src) -{ - if (!src->xcontext) - return FALSE; - - /* Maybe later we can check the display hasn't changed size */ - /* We could use XQueryPointer to get only the current window. */ - return TRUE; -} - -#ifdef HAVE_XFIXES -static void -composite_pixel (GstXContext * xcontext, guchar * dest, guchar * src) -{ - guint8 r = src[2]; - guint8 g = src[1]; - guint8 b = src[0]; - guint8 a = src[3]; - guint8 dr, dg, db; - guint32 color; - gint r_shift, r_max, r_shift_out; - gint g_shift, g_max, g_shift_out; - gint b_shift, b_max, b_shift_out; - - switch (xcontext->bpp) { - case 8: - color = *dest; - break; - case 16: - color = GUINT16_FROM_LE (*(guint32 *) (dest)); - break; - case 32: - color = GUINT32_FROM_LE (*(guint32 *) (dest)); - break; - default: - /* Should not reach here */ - g_assert_not_reached (); - } - - /* possible optimisation: - * move the code that finds shift and max in the _link function */ - for (r_shift = 0; !(xcontext->visual->red_mask & (1 << r_shift)); r_shift++); - for (g_shift = 0; !(xcontext->visual->green_mask & (1 << g_shift)); - g_shift++); - for (b_shift = 0; !(xcontext->visual->blue_mask & (1 << b_shift)); b_shift++); - - for (r_shift_out = 0; !(xcontext->visual->red_mask & (1 << r_shift_out)); - r_shift_out++); - for (g_shift_out = 0; !(xcontext->visual->green_mask & (1 << g_shift_out)); - g_shift_out++); - for (b_shift_out = 0; !(xcontext->visual->blue_mask & (1 << b_shift_out)); - b_shift_out++); - - - r_max = (xcontext->visual->red_mask >> r_shift); - b_max = (xcontext->visual->blue_mask >> b_shift); - g_max = (xcontext->visual->green_mask >> g_shift); - -#define RGBXXX_R(x) (((x)>>r_shift) & (r_max)) -#define RGBXXX_G(x) (((x)>>g_shift) & (g_max)) -#define RGBXXX_B(x) (((x)>>b_shift) & (b_max)) - - dr = (RGBXXX_R (color) * 255) / r_max; - dg = (RGBXXX_G (color) * 255) / g_max; - db = (RGBXXX_B (color) * 255) / b_max; - - dr = (r * a + (0xff - a) * dr) / 0xff; - dg = (g * a + (0xff - a) * dg) / 0xff; - db = (b * a + (0xff - a) * db) / 0xff; - - color = (((dr * r_max) / 255) << r_shift_out) + - (((dg * g_max) / 255) << g_shift_out) + - (((db * b_max) / 255) << b_shift_out); - - switch (xcontext->bpp) { - case 8: - *dest = color; - break; - case 16: - *(guint16 *) (dest) = color; - break; - case 32: - *(guint32 *) (dest) = color; - break; - default: - g_warning ("bpp %d not supported\n", xcontext->bpp); - } -} -#endif - -/* Retrieve an XImageSrcBuffer, preferably from our - * pool of existing images and populate it from the window */ -static GstXImageSrcBuffer * -gst_ximage_src_ximage_get (GstXImageSrc * ximagesrc) -{ - GstXImageSrcBuffer *ximage = NULL; - GstCaps *caps = NULL; - - g_mutex_lock (ximagesrc->pool_lock); - while (ximagesrc->buffer_pool != NULL) { - ximage = ximagesrc->buffer_pool->data; - - if ((ximage->width != ximagesrc->width) || - (ximage->height != ximagesrc->height)) { - gst_ximage_buffer_free (ximage); - } - - ximagesrc->buffer_pool = g_slist_delete_link (ximagesrc->buffer_pool, - ximagesrc->buffer_pool); - } - g_mutex_unlock (ximagesrc->pool_lock); - - if (ximage == NULL) { - GstXContext *xcontext; - - GST_DEBUG_OBJECT (ximagesrc, "creating image (%dx%d)", - ximagesrc->width, ximagesrc->height); - - g_mutex_lock (ximagesrc->x_lock); - ximage = gst_ximageutil_ximage_new (ximagesrc->xcontext, - GST_ELEMENT (ximagesrc), ximagesrc->width, ximagesrc->height, - (BufferReturnFunc) (gst_ximage_src_return_buf)); - if (ximage == NULL) { - GST_ELEMENT_ERROR (ximagesrc, RESOURCE, WRITE, (NULL), - ("could not create a %dx%d ximage", ximage->width, ximage->height)); - g_mutex_unlock (ximagesrc->x_lock); - return NULL; - } - - xcontext = ximagesrc->xcontext; - - caps = gst_caps_new_simple ("video/x-raw-rgb", - "bpp", G_TYPE_INT, xcontext->bpp, - "depth", G_TYPE_INT, xcontext->depth, - "endianness", G_TYPE_INT, xcontext->endianness, - "red_mask", G_TYPE_INT, xcontext->r_mask_output, - "green_mask", G_TYPE_INT, xcontext->g_mask_output, - "blue_mask", G_TYPE_INT, xcontext->b_mask_output, - "width", G_TYPE_INT, xcontext->width, - "height", G_TYPE_INT, xcontext->height, - "framerate", GST_TYPE_FRACTION, ximagesrc->fps_n, ximagesrc->fps_d, - "pixel-aspect-ratio", GST_TYPE_FRACTION, - gst_value_get_fraction_numerator (xcontext->par), - gst_value_get_fraction_denominator (xcontext->par), NULL); - - gst_buffer_set_caps (GST_BUFFER (ximage), caps); - g_mutex_unlock (ximagesrc->x_lock); - } - - g_return_val_if_fail (GST_IS_XIMAGE_SRC (ximagesrc), NULL); - -#ifdef HAVE_XDAMAGE - if (ximagesrc->have_xdamage) { - XEvent ev; - - GST_DEBUG_OBJECT (ximagesrc, "Retrieving screen using XDamage"); - - do { - XNextEvent (ximagesrc->xcontext->disp, &ev); - if (ev.type == ximagesrc->damage_event_base + XDamageNotify) { - XDamageNotifyEvent *dev = (XDamageNotifyEvent *) & ev; - -#ifdef HAVE_XSHM - if (ximagesrc->xcontext->use_xshm && - dev->area.width == ximagesrc->width && - dev->area.height == ximagesrc->height) { - GST_DEBUG_OBJECT (ximagesrc, "Entire screen was damaged"); - XShmGetImage (ximagesrc->xcontext->disp, ximagesrc->xwindow, - ximage->ximage, 0, 0, AllPlanes); - /* No need to collect more events */ - while (XPending (ximagesrc->xcontext->disp)) { - XNextEvent (ximagesrc->xcontext->disp, &ev); - } - break; - } else -#endif - { - GST_LOG_OBJECT (ximagesrc, - "Retrieving damaged sub-region @ %d,%d size %dx%d", - dev->area.x, dev->area.y, dev->area.width, dev->area.height); - - XGetSubImage (ximagesrc->xcontext->disp, ximagesrc->xwindow, - dev->area.x, dev->area.y, - dev->area.width, dev->area.height, - AllPlanes, ZPixmap, ximage->ximage, dev->area.x, dev->area.y); - } - } - } while (XPending (ximagesrc->xcontext->disp)); - XDamageSubtract (ximagesrc->xcontext->disp, ximagesrc->damage, None, None); -#ifdef HAVE_XFIXES - /* re-get area where last mouse pointer was */ - if (ximagesrc->cursor_image) { - gint x, y, width, height; - - x = ximagesrc->cursor_image->x - ximagesrc->cursor_image->xhot; - y = ximagesrc->cursor_image->y - ximagesrc->cursor_image->yhot; - width = ximagesrc->cursor_image->width; - height = ximagesrc->cursor_image->height; - - /* bounds checking */ - if (x < 0) - x = 0; - if (y < 0) - y = 0; - if (x + width > ximagesrc->width) - width = ximagesrc->width - x; - if (y + height > ximagesrc->height) - height = ximagesrc->height - y; - g_assert (x >= 0); - g_assert (y >= 0); - - GST_DEBUG_OBJECT (ximagesrc, "Removing cursor from %d,%d", x, y); - XGetSubImage (ximagesrc->xcontext->disp, ximagesrc->xwindow, - x, y, width, height, AllPlanes, ZPixmap, ximage->ximage, x, y); - } -#endif - - - } else { -#endif - -#ifdef HAVE_XSHM - if (ximagesrc->xcontext->use_xshm) { - GST_DEBUG_OBJECT (ximagesrc, "Retrieving screen using XShm"); - XShmGetImage (ximagesrc->xcontext->disp, ximagesrc->xwindow, - ximage->ximage, 0, 0, AllPlanes); - - } else -#endif /* HAVE_XSHM */ - { - GST_DEBUG_OBJECT (ximagesrc, "Retrieving screen using XGetImage"); - ximage->ximage = XGetImage (ximagesrc->xcontext->disp, ximagesrc->xwindow, - 0, 0, ximagesrc->width, ximagesrc->height, AllPlanes, ZPixmap); - } -#ifdef HAVE_XDAMAGE - } -#endif - -#ifdef HAVE_XFIXES - if (ximagesrc->show_pointer && ximagesrc->have_xfixes) { - - GST_DEBUG_OBJECT (ximagesrc, "Using XFixes to draw cursor"); - /* get cursor */ - ximagesrc->cursor_image = XFixesGetCursorImage (ximagesrc->xcontext->disp); - if (ximagesrc->cursor_image != NULL) { - int cx, cy, i, j, count; - - cx = ximagesrc->cursor_image->x - ximagesrc->cursor_image->xhot; - cy = ximagesrc->cursor_image->y - ximagesrc->cursor_image->yhot; - count = ximagesrc->cursor_image->width * ximagesrc->cursor_image->height; - for (i = 0; i < count; i++) - ximagesrc->cursor_image->pixels[i] = - GUINT_TO_LE (ximagesrc->cursor_image->pixels[i]); - - /* copy those pixels across */ - for (j = cy; - j < cy + ximagesrc->cursor_image->height && j < ximagesrc->height; - j++) { - for (i = cx; - i < cx + ximagesrc->cursor_image->width && i < ximagesrc->width; - i++) { - guint8 *src, *dest; - - src = - (guint8 *) & (ximagesrc->cursor_image->pixels[((j - - cy) * ximagesrc->cursor_image->width + (i - cx))]); - dest = - (guint8 *) & (ximage->ximage->data[(j * ximagesrc->width + - i) * (ximagesrc->xcontext->bpp / 8)]); - - composite_pixel (ximagesrc->xcontext, (guint8 *) dest, - (guint8 *) src); - } - } - } - } -#endif - - return ximage; -} - -static GstFlowReturn -gst_ximage_src_create (GstPushSrc * bs, GstBuffer ** buf) -{ - GstXImageSrc *s = GST_XIMAGE_SRC (bs); - GstXImageSrcBuffer *image; - GstClockTime base_time; - GstClockTime next_capture_ts; - GstClockTime dur; - gint64 next_frame_no; - - if (!gst_ximage_src_recalc (s)) { - GST_ELEMENT_ERROR (s, RESOURCE, FAILED, - (_("Changing resolution at runtime is not yet supported.")), (NULL)); - return GST_FLOW_ERROR; - } - - if (s->fps_n <= 0 || s->fps_d <= 0) - return GST_FLOW_NOT_NEGOTIATED; /* FPS must be > 0 */ - - /* Now, we might need to wait for the next multiple of the fps - * before capturing */ - - GST_OBJECT_LOCK (s); - base_time = GST_ELEMENT_CAST (s)->base_time; - next_capture_ts = gst_clock_get_time (GST_ELEMENT_CLOCK (s)); - next_capture_ts -= base_time; - - /* Figure out which 'frame number' position we're at, based on the cur time - * and frame rate */ - next_frame_no = gst_util_uint64_scale (next_capture_ts, - s->fps_n, GST_SECOND * s->fps_d); - if (next_frame_no == s->last_frame_no) { - GstClockID id; - GstClockReturn ret; - - /* Need to wait for the next frame */ - next_frame_no += 1; - - /* Figure out what the next frame time is */ - next_capture_ts = gst_util_uint64_scale (next_frame_no, - s->fps_d * GST_SECOND, s->fps_n); - - id = gst_clock_new_single_shot_id (GST_ELEMENT_CLOCK (s), - next_capture_ts + base_time); - s->clock_id = id; - - /* release the object lock while waiting */ - GST_OBJECT_UNLOCK (s); - - GST_DEBUG_OBJECT (s, "Waiting for next frame time %" G_GUINT64_FORMAT, - next_capture_ts); - ret = gst_clock_id_wait (id, NULL); - GST_OBJECT_LOCK (s); - - gst_clock_id_unref (id); - s->clock_id = NULL; - if (ret == GST_CLOCK_UNSCHEDULED) { - /* Got woken up by the unlock function */ - GST_OBJECT_UNLOCK (s); - return GST_FLOW_WRONG_STATE; - } - /* Duration is a complete 1/fps frame duration */ - dur = gst_util_uint64_scale_int (GST_SECOND, s->fps_d, s->fps_n); - } else { - GstClockTime next_frame_ts; - - GST_DEBUG_OBJECT (s, "No need to wait for next frame time %" - G_GUINT64_FORMAT " next frame = %" G_GINT64_FORMAT " prev = %" - G_GINT64_FORMAT, next_capture_ts, next_frame_no, s->last_frame_no); - next_frame_ts = gst_util_uint64_scale (next_frame_no + 1, - s->fps_d * GST_SECOND, s->fps_n); - /* Frame duration is from now until the next expected capture time */ - dur = next_frame_ts - next_capture_ts; - } - s->last_frame_no = next_frame_no; - GST_OBJECT_UNLOCK (s); - - image = gst_ximage_src_ximage_get (s); - if (!image) - return GST_FLOW_ERROR; - - *buf = GST_BUFFER (image); - GST_BUFFER_TIMESTAMP (*buf) = next_capture_ts; - GST_BUFFER_DURATION (*buf) = dur; - - return GST_FLOW_OK; -} - -static void -gst_ximage_src_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec) -{ - GstXImageSrc *src = GST_XIMAGE_SRC (object); - - switch (prop_id) { - case PROP_DISPLAY_NAME: - - g_free (src->display_name); - src->display_name = g_strdup (g_value_get_string (value)); - break; - case PROP_SCREEN_NUM: - src->screen_num = g_value_get_uint (value); - break; - case PROP_SHOW_POINTER: - src->show_pointer = g_value_get_boolean (value); - break; - default: - break; - } -} - -static void -gst_ximage_src_get_property (GObject * object, guint prop_id, GValue * value, - GParamSpec * pspec) -{ - GstXImageSrc *src = GST_XIMAGE_SRC (object); - - switch (prop_id) { - case PROP_DISPLAY_NAME: - if (src->xcontext) - g_value_set_string (value, DisplayString (src->xcontext->disp)); - else - g_value_set_string (value, src->display_name); - - break; - case PROP_SCREEN_NUM: - g_value_set_uint (value, src->screen_num); - break; - case PROP_SHOW_POINTER: - g_value_set_boolean (value, src->show_pointer); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -gst_ximage_src_clear_bufpool (GstXImageSrc * ximagesrc) -{ - g_mutex_lock (ximagesrc->pool_lock); - while (ximagesrc->buffer_pool != NULL) { - GstXImageSrcBuffer *ximage = ximagesrc->buffer_pool->data; - - gst_ximage_buffer_free (ximage); - - ximagesrc->buffer_pool = g_slist_delete_link (ximagesrc->buffer_pool, - ximagesrc->buffer_pool); - } - g_mutex_unlock (ximagesrc->pool_lock); -} - -static void -gst_ximage_src_base_init (gpointer g_class) -{ - GstElementClass *ec = GST_ELEMENT_CLASS (g_class); - - gst_element_class_set_details (ec, &ximagesrc_details); - gst_element_class_add_pad_template (ec, gst_static_pad_template_get (&t)); -} - -static void -gst_ximage_src_dispose (GObject * object) -{ - /* Drop references in the buffer_pool */ - gst_ximage_src_clear_bufpool (GST_XIMAGE_SRC (object)); -} - -static void -gst_ximage_src_finalize (GObject * object) -{ - GstXImageSrc *src = GST_XIMAGE_SRC (object); - - if (src->xcontext) - ximageutil_xcontext_clear (src->xcontext); - - g_mutex_free (src->pool_lock); - g_mutex_free (src->x_lock); - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -static GstCaps * -gst_ximage_src_get_caps (GstBaseSrc * bs) -{ - GstXImageSrc *s = GST_XIMAGE_SRC (bs); - GstXContext *xcontext; - - if ((!s->xcontext) && (!gst_ximage_src_open_display (s, NULL))) - return gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SRC (s)-> - srcpad)); - - if (!gst_ximage_src_recalc (s)) - return gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SRC (s)-> - srcpad)); - - xcontext = s->xcontext; - - return gst_caps_new_simple ("video/x-raw-rgb", - "bpp", G_TYPE_INT, xcontext->bpp, - "depth", G_TYPE_INT, xcontext->depth, - "endianness", G_TYPE_INT, xcontext->endianness, - "red_mask", G_TYPE_INT, xcontext->r_mask_output, - "green_mask", G_TYPE_INT, xcontext->g_mask_output, - "blue_mask", G_TYPE_INT, xcontext->b_mask_output, - "width", G_TYPE_INT, xcontext->width, - "height", G_TYPE_INT, xcontext->height, - "framerate", GST_TYPE_FRACTION_RANGE, 1, G_MAXINT, G_MAXINT, 1, - "pixel-aspect-ratio", GST_TYPE_FRACTION_RANGE, 1, G_MAXINT, G_MAXINT, 1, - NULL); -} - -static gboolean -gst_ximage_src_set_caps (GstBaseSrc * bs, GstCaps * caps) -{ - GstXImageSrc *s = GST_XIMAGE_SRC (bs); - GstStructure *structure; - const GValue *new_fps; - - /* If not yet opened, disallow setcaps until later */ - if (!s->xcontext) - return FALSE; - - /* The only thing that can change is the framerate downstream wants */ - structure = gst_caps_get_structure (caps, 0); - new_fps = gst_structure_get_value (structure, "framerate"); - if (!new_fps) - return FALSE; - - /* Store this FPS for use when generating buffers */ - s->fps_n = gst_value_get_fraction_numerator (new_fps); - s->fps_d = gst_value_get_fraction_denominator (new_fps); - - GST_DEBUG_OBJECT (s, "peer wants %d/%d fps", s->fps_n, s->fps_d); - - return TRUE; -} - -static void -gst_ximage_src_fixate (GstPad * pad, GstCaps * caps) -{ - gint i; - GstStructure *structure; - - for (i = 0; i < gst_caps_get_size (caps); ++i) { - structure = gst_caps_get_structure (caps, i); - - gst_structure_fixate_field_nearest_fraction (structure, "framerate", 25, 1); - } -} - -static void -gst_ximage_src_class_init (GstXImageSrcClass * klass) -{ - GObjectClass *gc = G_OBJECT_CLASS (klass); - GstBaseSrcClass *bc = GST_BASE_SRC_CLASS (klass); - GstPushSrcClass *push_class = GST_PUSH_SRC_CLASS (klass); - - gc->set_property = gst_ximage_src_set_property; - gc->get_property = gst_ximage_src_get_property; - gc->dispose = gst_ximage_src_dispose; - gc->finalize = gst_ximage_src_finalize; - - g_object_class_install_property (gc, PROP_DISPLAY_NAME, - g_param_spec_string ("display_name", "Display", "X Display Name", NULL, - G_PARAM_READWRITE)); - g_object_class_install_property (gc, PROP_SCREEN_NUM, - g_param_spec_uint ("screen_num", "Screen number", "X Screen Number", - 0, G_MAXINT, 0, G_PARAM_READWRITE)); - g_object_class_install_property (gc, PROP_SHOW_POINTER, - g_param_spec_boolean ("show_pointer", "Show Mouse Pointer", - "Show mouse pointer (if XFixes extension enabled)", TRUE, - G_PARAM_READWRITE)); - - parent_class = g_type_class_peek_parent (klass); - - push_class->create = gst_ximage_src_create; - bc->get_caps = gst_ximage_src_get_caps; - bc->set_caps = gst_ximage_src_set_caps; - bc->start = gst_ximage_src_start; - bc->stop = gst_ximage_src_stop; - bc->unlock = gst_ximage_src_unlock; -} - -static void -gst_ximage_src_init (GstXImageSrc * ximagesrc, GstXImageSrcClass * klass) -{ - gst_base_src_set_live (GST_BASE_SRC (ximagesrc), TRUE); - gst_pad_set_fixatecaps_function (GST_BASE_SRC_PAD (ximagesrc), - gst_ximage_src_fixate); - - ximagesrc->pool_lock = g_mutex_new (); - ximagesrc->x_lock = g_mutex_new (); - ximagesrc->show_pointer = TRUE; -} - -static gboolean -plugin_init (GstPlugin * plugin) -{ - gboolean ret; - - GST_DEBUG_CATEGORY_INIT (gst_debug_ximage_src, "ximagesrc", 0, - "ximagesrc element debug"); - - ret = gst_element_register (plugin, "ximagesrc", GST_RANK_NONE, - GST_TYPE_XIMAGE_SRC); - - return ret; -} - -GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, - GST_VERSION_MINOR, - "ximagesrc", - "X11 video input plugin using standard Xlib calls", - plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN); 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