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eb048c91be
Remove all the roadblocks we've put up to keep implicit modifiers out. Our importing code already handles them as a signal that says 'No modifiers, please!'. Now we just hope for the best and pass things along. This is necessary since some drivers won't produce any explicit modifiers.
135 lines
4.0 KiB
C
135 lines
4.0 KiB
C
/* gdkdmabufformats.c
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*
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* Copyright 2023 Red Hat, Inc.
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include "gdkdmabufformatsbuilderprivate.h"
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#include "gdkdmabufformatsprivate.h"
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#define GDK_ARRAY_NAME gdk_dmabuf_formats_builder
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#define GDK_ARRAY_TYPE_NAME GdkDmabufFormatsBuilder
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#define GDK_ARRAY_ELEMENT_TYPE GdkDmabufFormat
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#define GDK_ARRAY_BY_VALUE 1
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#define GDK_ARRAY_PREALLOC 1024
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#define GDK_ARRAY_NO_MEMSET 1
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#include "gdk/gdkarrayimpl.c"
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/* NB: We keep duplicates in the list for ease of use. Only when creating the final
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* GdkDmabufFormats do we actually remove duplicates.
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*/
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GdkDmabufFormatsBuilder *
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gdk_dmabuf_formats_builder_new (void)
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{
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GdkDmabufFormatsBuilder *result = g_new (GdkDmabufFormatsBuilder, 1);
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gdk_dmabuf_formats_builder_init (result);
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return result;
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}
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static int
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gdk_dmabuf_format_compare (gconstpointer data_a,
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gconstpointer data_b)
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{
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const GdkDmabufFormat *a = data_a;
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const GdkDmabufFormat *b = data_b;
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if (a->fourcc == b->fourcc)
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return (a->modifier - b->modifier) >> 8 * (sizeof (gint64) - sizeof (gint));
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else
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return a->fourcc - b->fourcc;
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}
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static gboolean
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gdk_dmabuf_format_equal (gconstpointer data_a,
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gconstpointer data_b)
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{
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const GdkDmabufFormat *a = data_a;
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const GdkDmabufFormat *b = data_b;
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return a->fourcc == b->fourcc &&
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a->modifier == b->modifier;
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}
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static void
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gdk_dmabuf_formats_builder_sort (GdkDmabufFormatsBuilder *self)
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{
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qsort (gdk_dmabuf_formats_builder_get_data (self),
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gdk_dmabuf_formats_builder_get_size (self),
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sizeof (GdkDmabufFormat),
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gdk_dmabuf_format_compare);
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}
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/* list must be sorted */
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static void
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gdk_dmabuf_formats_builder_remove_duplicates (GdkDmabufFormatsBuilder *self)
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{
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gsize i, j;
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for (i = 1, j = 0; i < gdk_dmabuf_formats_builder_get_size (self); i++)
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{
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if (gdk_dmabuf_format_equal (gdk_dmabuf_formats_builder_get (self, i),
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gdk_dmabuf_formats_builder_get (self, j)))
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continue;
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j++;
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if (i != j)
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*gdk_dmabuf_formats_builder_index (self, j) = *gdk_dmabuf_formats_builder_index (self, i);
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}
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}
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GdkDmabufFormats *
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gdk_dmabuf_formats_builder_free_to_formats (GdkDmabufFormatsBuilder *self)
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{
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GdkDmabufFormats *formats;
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gdk_dmabuf_formats_builder_sort (self);
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gdk_dmabuf_formats_builder_remove_duplicates (self);
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formats = gdk_dmabuf_formats_new (gdk_dmabuf_formats_builder_get_data (self),
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gdk_dmabuf_formats_builder_get_size (self));
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gdk_dmabuf_formats_builder_clear (self);
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g_free (self);
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return formats;
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}
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void
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gdk_dmabuf_formats_builder_add_format (GdkDmabufFormatsBuilder *self,
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guint32 fourcc,
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guint64 modifier)
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{
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gdk_dmabuf_formats_builder_append (self, &(GdkDmabufFormat) { fourcc, modifier });
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}
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void
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gdk_dmabuf_formats_builder_add_formats (GdkDmabufFormatsBuilder *self,
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GdkDmabufFormats *formats)
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{
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gdk_dmabuf_formats_builder_splice (self,
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gdk_dmabuf_formats_builder_get_size (self),
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0,
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FALSE,
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gdk_dmabuf_formats_peek_formats (formats),
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gdk_dmabuf_formats_get_n_formats (formats));
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}
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