mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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bc93903d01
Original commit message from CVS: Added the base framework for the SMPTE transitions and wipes.
125 lines
2.7 KiB
C
125 lines
2.7 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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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#include "gstmask.h"
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extern void _gst_barboxwipes_register (void);
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static GList *masks = NULL;
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void
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_gst_mask_init (void)
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{
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_gst_barboxwipes_register ();
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}
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static gint
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gst_mask_compare (GstMaskDefinition *def1,
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GstMaskDefinition *def2)
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{
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return (def1->type - def2->type);
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}
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void
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_gst_mask_register (GstMaskDefinition *definition)
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{
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masks = g_list_insert_sorted (masks, definition, (GCompareFunc) gst_mask_compare);
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}
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const GList*
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gst_mask_get_definitions (void)
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{
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return masks;
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}
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static GstMaskDefinition*
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gst_mask_find_definition (gint type)
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{
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GList *walk = masks;
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while (walk) {
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GstMaskDefinition *def = (GstMaskDefinition *) walk->data;
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if (def->type == type)
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return def;
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walk = g_list_next (walk);
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}
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return NULL;
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}
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GstMask*
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gst_mask_factory_new (gint type, gint bpp, gint width, gint height)
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{
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GstMaskDefinition *definition;
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GstMask *mask = NULL;
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definition = gst_mask_find_definition (type);
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if (definition) {
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mask = definition->new_func (definition, bpp, width, height);
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}
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return mask;
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}
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GstMask*
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_gst_mask_default_new (GstMaskDefinition *definition,
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gint bpp, gint width, gint height)
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{
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GstMask *mask;
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mask = g_new0 (GstMask, 1);
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mask->type = definition->type;
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mask->bpp = bpp;
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mask->width = width;
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mask->height = height;
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mask->update_func = definition->update_func;
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mask->destroy_func = definition->destroy_func;
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mask->data = g_malloc (width * height * (bpp+7)>>3);
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return mask;
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}
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void
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_gst_mask_default_destroy (GstMask *mask)
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{
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g_free (mask->data);
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g_free (mask);
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}
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void
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gst_mask_destroy (GstMask *mask)
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{
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if (mask->destroy_func)
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mask->destroy_func (mask);
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}
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void
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gst_mask_update (GstMask *mask,
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GstClockTime position,
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GstClockTime duration)
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{
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g_return_if_fail (mask != NULL);
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if (mask->update_func)
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mask->update_func (mask, position, duration);
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}
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