mirror of
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Add new caps code
Original commit message from CVS: Add new caps code
This commit is contained in:
David Schleef
parent
ad008198e0
commit
2fa95b4fac
2 changed files with 687 additions and 0 deletions
587
gst/gstcaps2.c
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587
gst/gstcaps2.c
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/* GStreamer
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* Copyright (C) <2003> David A. Schleef <ds@schleef.org>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <gst/gst.h>
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static void _gst_caps2_transform_to_string (const GValue *src_value,
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GValue *dest_value);
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static void _gst_caps2_value_init (GValue *value);
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static void _gst_caps2_value_free (GValue *value);
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static void _gst_caps2_value_copy (const GValue *src, GValue *dest);
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static gpointer _gst_caps2_value_peek_pointer (const GValue *value);
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static void _gst_caps2_from_string_inplace (GstCaps2 *caps,
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const gchar *string);
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GType _gst_caps2_type;
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void _gst_caps2_initialize (void)
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{
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static const GTypeValueTable type_value_table = {
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_gst_caps2_value_init,
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_gst_caps2_value_free,
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_gst_caps2_value_copy,
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_gst_caps2_value_peek_pointer,
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NULL,
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NULL,
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NULL,
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NULL,
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};
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static const GTypeInfo caps2_info = {
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0,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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0,
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0,
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NULL,
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&type_value_table,
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};
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_gst_caps2_type = g_type_register_static (G_TYPE_BOXED, "GstCaps2",
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&caps2_info, 0);
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g_value_register_transform_func (_gst_caps2_type, G_TYPE_STRING,
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_gst_caps2_transform_to_string);
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}
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GType gst_caps2_get_type (void)
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{
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return _gst_caps2_type;
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}
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/* creation/deletion */
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GstCaps2 *gst_caps2_new_empty (void)
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{
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GstCaps2 *caps = g_new0(GstCaps2, 1);
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caps->type = _gst_caps2_type;
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caps->structs = g_ptr_array_new();
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return caps;
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}
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GstCaps2 *gst_caps2_new_any (void)
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{
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GstCaps2 *caps = g_new0(GstCaps2, 1);
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caps->type = _gst_caps2_type;
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caps->structs = g_ptr_array_new();
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caps->flags = GST_CAPS2_FLAGS_ANY;
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return caps;
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}
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GstCaps2 *gst_caps2_new_simple (const char *media_type, const char *fieldname,
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...)
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{
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GstCaps2 *caps;
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GstStructure *structure;
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va_list var_args;
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caps = g_new0(GstCaps2, 1);
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caps->type = _gst_caps2_type;
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caps->structs = g_ptr_array_new();
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va_start (var_args, fieldname);
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structure = gst_structure_new_valist (media_type, fieldname, var_args);
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va_end (var_args);
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g_ptr_array_add (caps->structs, structure);
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return caps;
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}
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GstCaps2 *gst_caps2_new_full (const GstStructure *struct1, ...)
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{
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GstCaps2 *caps;
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va_list var_args;
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va_start (var_args, struct1);
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caps = gst_caps2_new_full_valist (struct1, var_args);
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va_end (var_args);
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return caps;
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}
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GstCaps2 *gst_caps2_new_full_valist (const GstStructure *structure,
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va_list var_args)
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{
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GstCaps2 *caps;
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caps = g_new0(GstCaps2, 1);
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caps->type = _gst_caps2_type;
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caps->structs = g_ptr_array_new();
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while(structure){
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g_ptr_array_add (caps->structs, (gpointer) structure);
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structure = va_arg (var_args, void *);
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}
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return caps;
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}
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GstCaps2 *gst_caps2_copy (const GstCaps2 *caps)
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{
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GstCaps2 *newcaps;
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GstStructure *structure;
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int i;
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newcaps = g_new0(GstCaps2, 1);
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newcaps->type = _gst_caps2_type;
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newcaps->flags = caps->flags;
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newcaps->structs = g_ptr_array_new();
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for(i=0;i<caps->structs->len;i++){
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structure = gst_caps2_get_nth_cap (caps, i);
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g_ptr_array_add (newcaps->structs, gst_structure_copy(structure));
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}
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return newcaps;
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}
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void gst_caps2_free (GstCaps2 *caps)
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{
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GstStructure *structure;
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int i;
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for(i=0;i<caps->structs->len;i++){
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structure = gst_caps2_get_nth_cap (caps, i);
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gst_structure_free (structure);
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}
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g_ptr_array_free(caps->structs, TRUE);
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g_free(caps);
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}
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const GstCaps2 *gst_caps2_from_static (GstStaticCaps2 *static_caps)
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{
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GstCaps2 *caps = (GstCaps2 *)static_caps;
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if (caps->type == 0) {
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caps->type = _gst_caps2_type;
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_gst_caps2_from_string_inplace (caps, static_caps->string);
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}
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return caps;
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}
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/* manipulation */
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void gst_caps2_append (GstCaps2 *caps1, GstCaps2 *caps2)
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{
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GstStructure *structure;
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int i;
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for(i=0;i<caps2->structs->len;i++){
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structure = gst_caps2_get_nth_cap (caps2, i);
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g_ptr_array_add (caps1->structs, structure);
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}
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g_ptr_array_free(caps2->structs, TRUE);
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g_free(caps2);
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}
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void gst_caps2_append_cap (GstCaps2 *caps1, GstStructure *structure)
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{
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if (structure){
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g_ptr_array_add (caps1->structs, structure);
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}
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}
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GstCaps2 *gst_caps2_split_one (GstCaps2 *caps)
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{
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/* FIXME */
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return NULL;
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}
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GstStructure *gst_caps2_get_nth_cap (const GstCaps2 *caps, int index)
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{
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return g_ptr_array_index(caps->structs, index);
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}
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GstCaps2 *gst_caps2_copy_1 (const GstCaps2 *caps)
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{
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GstCaps2 *newcaps;
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GstStructure *structure;
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newcaps = g_new0(GstCaps2, 1);
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newcaps->type = _gst_caps2_type;
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newcaps->flags = caps->flags;
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newcaps->structs = g_ptr_array_new();
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if (caps->structs->len > 0){
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structure = gst_caps2_get_nth_cap (caps, 0);
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g_ptr_array_add (newcaps->structs, gst_structure_copy(structure));
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}
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return newcaps;
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}
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/* tests */
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gboolean gst_caps2_is_any (const GstCaps2 *caps)
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{
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return (caps->flags & GST_CAPS2_FLAGS_ANY);
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}
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gboolean gst_caps2_is_empty (const GstCaps2 *caps)
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{
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if (caps->flags & GST_CAPS2_FLAGS_ANY) return FALSE;
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return (caps->structs == NULL) || (caps->structs->len == 0);
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}
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gboolean gst_caps2_is_chained (const GstCaps2 *caps)
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{
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return (caps->structs->len > 1);
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}
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gboolean gst_caps2_is_fixed (const GstCaps2 *caps)
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{
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GstStructure *structure;
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GstStructureField *field;
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GType type;
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int i;
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if (caps->structs->len > 1) return FALSE;
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structure = gst_caps2_get_nth_cap (caps, 0);
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for(i=0;i<structure->fields->len;i++) {
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field = GST_STRUCTURE_FIELD(structure, i);
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type = G_VALUE_TYPE(&field->value);
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if(type == GST_TYPE_INT_RANGE || type == GST_TYPE_DOUBLE_RANGE) {
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return FALSE;
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}
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}
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return TRUE;
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}
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static gboolean _gst_cap_is_always_compatible (const GstStructure *struct1,
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const GstStructure *struct2)
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{
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int i;
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const GstStructureField *field1;
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const GstStructureField *field2;
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if(struct1->name != struct2->name){
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return FALSE;
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}
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for(i=0;i<struct2->fields->len;i++){
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GValue dest = { 0 };
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/* the reversed order is important */
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field2 = GST_STRUCTURE_FIELD (struct2, i);
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field1 = gst_structure_id_get_field (struct1, field2->name);
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if (field1 == NULL) return FALSE;
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if (gst_value_compare (&field1->value, &field2->value) ==
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GST_VALUE_EQUAL) {
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break;
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}
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if (gst_value_intersect (&dest, &field1->value, &field2->value)){
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g_value_unset (&dest);
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break;
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}
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return FALSE;
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}
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return TRUE;
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}
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static gboolean _gst_caps_cap_is_always_compatible (const GstStructure
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*struct1, const GstCaps2 *caps2)
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{
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int i;
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for(i=0;i<caps2->structs->len;i++){
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GstStructure *struct2 = gst_caps2_get_nth_cap (caps2, i);
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if (_gst_cap_is_always_compatible (struct1, struct2)) {
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return TRUE;
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}
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}
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return FALSE;
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}
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gboolean gst_caps2_is_always_compatible (const GstCaps2 *caps1,
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const GstCaps2 *caps2)
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{
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int i;
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for(i=0;i<caps1->structs->len;i++) {
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GstStructure *struct1 = gst_caps2_get_nth_cap (caps1, i);
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if (_gst_caps_cap_is_always_compatible(struct1, caps2) == FALSE){
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return FALSE;
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}
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}
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return FALSE;
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}
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static GstStructure *gst_caps2_structure_intersect (const GstStructure *struct1,
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const GstStructure *struct2)
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{
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int i;
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GstStructure *dest;
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const GstStructureField *field1;
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const GstStructureField *field2;
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int ret;
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if (struct1->name != struct2->name) return NULL;
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dest = gst_structure_id_empty_new (struct1->name);
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for(i=0;i<struct1->fields->len;i++){
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GValue dest_field = { 0 };
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field1 = GST_STRUCTURE_FIELD (struct1, i);
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field2 = gst_structure_id_get_field (struct2, field1->name);
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if (field2 == NULL) {
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gst_structure_set_field_copy (dest, field1);
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} else {
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if (gst_value_intersect (&dest_field, &field1->value, &field2->value)) {
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gst_structure_set_value (dest, g_quark_to_string(field1->name),
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&dest_field);
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} else {
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ret = gst_value_compare(&field1->value, &field2->value);
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if (ret == GST_VALUE_EQUAL){
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gst_structure_set_value (dest, g_quark_to_string(field1->name),
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&field1->value);
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} else {
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gst_structure_free (dest);
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return NULL;
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}
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}
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}
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}
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for(i=0;i<struct1->fields->len;i++){
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field2 = GST_STRUCTURE_FIELD (struct2, i);
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field1 = gst_structure_id_get_field (struct1, field2->name);
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if (field1 == NULL) {
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gst_structure_set_field_copy (dest, field2);
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}
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}
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return dest;
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}
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#if 0
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static GstStructure *gst_caps2_structure_union (const GstStructure *struct1,
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const GstStructure *struct2)
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{
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int i;
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GstStructure *dest;
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const GstStructureField *field1;
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const GstStructureField *field2;
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int ret;
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/* FIXME this doesn't actually work */
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if (struct1->name != struct2->name) return NULL;
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dest = gst_structure_id_empty_new (struct1->name);
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for(i=0;i<struct1->fields->len;i++){
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GValue dest_value = { 0 };
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field1 = GST_STRUCTURE_FIELD (struct1, i);
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field2 = gst_structure_id_get_field (struct2, field1->name);
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if (field2 == NULL) {
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continue;
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} else {
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if (gst_value_union (&dest_value, &field1->value, &field2->value)) {
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gst_structure_set_value (dest, g_quark_to_string(field1->name),
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&dest_value);
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} else {
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ret = gst_value_compare (&field1->value, &field2->value);
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}
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}
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}
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return dest;
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}
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#endif
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/* operations */
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GstCaps2 *gst_caps2_intersect (const GstCaps2 *caps1, const GstCaps2 *caps2)
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{
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int i,j;
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GstStructure *struct1;
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GstStructure *struct2;
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GstCaps2 *dest;
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dest = gst_caps2_new_empty();
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for(i=0;i<caps1->structs->len;i++){
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struct1 = gst_caps2_get_nth_cap (caps1, i);
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for(j=0;j<caps1->structs->len;j++){
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struct2 = gst_caps2_get_nth_cap (caps2, j);
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gst_caps2_append_cap(dest, gst_caps2_structure_intersect (
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struct1, struct2));
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}
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}
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/* FIXME: need a simplify function */
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return dest;
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}
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GstCaps2 *gst_caps2_union (const GstCaps2 *caps1, const GstCaps2 *caps2)
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{
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GstCaps2 *dest1;
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GstCaps2 *dest2;
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dest1 = gst_caps2_copy (caps1);
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dest2 = gst_caps2_copy (caps2);
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gst_caps2_append (dest1, dest2);
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/* FIXME: need a simplify function */
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return dest1;
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}
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GstCaps2 *gst_caps2_normalize (const GstCaps2 *caps)
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{
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|
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return NULL;
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}
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#ifndef GST_DISABLE_LOADSAVE
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xmlNodePtr gst_caps2_save_thyself (const GstCaps2 *caps, xmlNodePtr parent)
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{
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return 0;
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}
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GstCaps2 *gst_caps2_load_thyself (xmlNodePtr parent)
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{
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return NULL;
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}
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#endif
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/* utility */
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void gst_caps2_replace (GstCaps2 **caps, const GstCaps2 *newcaps)
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{
|
||||
|
||||
}
|
||||
|
||||
gchar *gst_caps2_to_string (const GstCaps2 *caps)
|
||||
{
|
||||
int i;
|
||||
GstStructure *structure;
|
||||
GString *s;
|
||||
|
||||
/* FIXME does this leak? */
|
||||
|
||||
if(gst_caps2_is_any(caps)){
|
||||
return g_strdup("ANY");
|
||||
}
|
||||
if(gst_caps2_is_empty(caps)){
|
||||
return g_strdup("EMPTY");
|
||||
}
|
||||
s = g_string_new("");
|
||||
structure = gst_caps2_get_nth_cap (caps, 0);
|
||||
g_string_append(s, gst_structure_to_string(structure));
|
||||
|
||||
for(i=1;i<caps->structs->len;i++){
|
||||
structure = gst_caps2_get_nth_cap (caps, i);
|
||||
|
||||
g_string_append(s, "; ");
|
||||
g_string_append(s, gst_structure_to_string(structure));
|
||||
}
|
||||
|
||||
return g_string_free(s, FALSE);
|
||||
}
|
||||
|
||||
static void _gst_caps2_from_string_inplace (GstCaps2 *caps,
|
||||
const gchar *string)
|
||||
{
|
||||
GstStructure *structure;
|
||||
|
||||
if (strcmp("ANY", string)==0) {
|
||||
caps->flags = GST_CAPS2_FLAGS_ANY;
|
||||
return;
|
||||
}
|
||||
if (strcmp("NONE", string)==0) {
|
||||
return;
|
||||
}
|
||||
|
||||
structure = gst_structure_from_string(string);
|
||||
gst_caps2_append_cap (caps, structure);
|
||||
}
|
||||
|
||||
GstCaps2 *gst_caps2_from_string (const gchar *string)
|
||||
{
|
||||
GstCaps2 *caps;
|
||||
|
||||
caps = gst_caps2_new_empty();
|
||||
_gst_caps2_from_string_inplace (caps, string);
|
||||
|
||||
return caps;
|
||||
}
|
||||
|
||||
static void _gst_caps2_transform_to_string (const GValue *src_value,
|
||||
GValue *dest_value)
|
||||
{
|
||||
g_return_if_fail (src_value != NULL);
|
||||
g_return_if_fail (dest_value != NULL);
|
||||
|
||||
dest_value->data[0].v_pointer =
|
||||
gst_caps2_to_string (src_value->data[0].v_pointer);
|
||||
}
|
||||
|
||||
static void _gst_caps2_value_init (GValue *value)
|
||||
{
|
||||
value->data[0].v_pointer = gst_caps2_new_empty();
|
||||
}
|
||||
|
||||
static void _gst_caps2_value_free (GValue *value)
|
||||
{
|
||||
gst_caps2_free (value->data[0].v_pointer);
|
||||
}
|
||||
|
||||
static void _gst_caps2_value_copy (const GValue *src, GValue *dest)
|
||||
{
|
||||
dest->data[0].v_pointer = gst_caps2_copy (src->data[0].v_pointer);
|
||||
}
|
||||
|
||||
static gpointer _gst_caps2_value_peek_pointer (const GValue *value)
|
||||
{
|
||||
return value->data[0].v_pointer;
|
||||
}
|
||||
|
||||
100
gst/gstcaps2.h
Normal file
100
gst/gstcaps2.h
Normal file
|
|
@ -0,0 +1,100 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) <2003> David A. Schleef <ds@schleef.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.
|
||||
*/
|
||||
|
||||
#ifndef __GST_CAPS2_H__
|
||||
#define __GST_CAPS2_H__
|
||||
|
||||
#include <gst/gstconfig.h>
|
||||
#include <gst/gststructure.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_CAPS2_FLAGS_ANY (1<<0)
|
||||
|
||||
extern GType _gst_caps2_type;
|
||||
|
||||
typedef struct _GstCaps2 GstCaps2;
|
||||
typedef struct _GstStaticCaps2 GstStaticCaps2;
|
||||
|
||||
struct _GstCaps2 {
|
||||
GType type;
|
||||
|
||||
guint16 flags;
|
||||
GPtrArray *structs;
|
||||
};
|
||||
|
||||
struct _GstStaticCaps2 {
|
||||
GstCaps2 caps;
|
||||
const char *string;
|
||||
};
|
||||
|
||||
#define GST_CAPS2_ANY gst_caps2_new_any()
|
||||
#define GST_CAPS2_NONE gst_caps2_new_empty()
|
||||
|
||||
#define GST_TYPE_CAPS2 gst_caps2_get_type()
|
||||
|
||||
void _gst_caps2_initialize (void);
|
||||
GType gst_caps2_get_type (void);
|
||||
|
||||
/* creation/deletion */
|
||||
GstCaps2 *gst_caps2_new_empty (void);
|
||||
GstCaps2 *gst_caps2_new_any (void);
|
||||
GstCaps2 *gst_caps2_new_simple (const char *media_type, const char *fieldname, ...);
|
||||
GstCaps2 *gst_caps2_new_full (const GstStructure *struct1, ...);
|
||||
GstCaps2 *gst_caps2_new_full_valist (const GstStructure *structure, va_list var_args);
|
||||
GstCaps2 *gst_caps2_copy (const GstCaps2 *caps);
|
||||
void gst_caps2_free (GstCaps2 *caps);
|
||||
const GstCaps2 *gst_caps2_from_static (GstStaticCaps2 *caps);
|
||||
|
||||
/* manipulation */
|
||||
void gst_caps2_append (GstCaps2 *caps1, GstCaps2 *caps2);
|
||||
void gst_caps2_append_cap (GstCaps2 *caps1, GstStructure *structure);
|
||||
GstCaps2 *gst_caps2_split_one (GstCaps2 *caps);
|
||||
GstStructure *gst_caps2_get_nth_cap (const GstCaps2 *caps, int index);
|
||||
GstCaps2 *gst_caps2_copy_1 (const GstCaps2 *caps);
|
||||
|
||||
/* tests */
|
||||
gboolean gst_caps2_is_any (const GstCaps2 *caps);
|
||||
gboolean gst_caps2_is_empty (const GstCaps2 *caps);
|
||||
gboolean gst_caps2_is_chained (const GstCaps2 *caps);
|
||||
gboolean gst_caps2_is_fixed (const GstCaps2 *caps);
|
||||
gboolean gst_caps2_is_always_compatible (const GstCaps2 *caps1,
|
||||
const GstCaps2 *caps2);
|
||||
|
||||
/* operations */
|
||||
GstCaps2 *gst_caps2_intersect (const GstCaps2 *caps1, const GstCaps2 *caps2);
|
||||
GstCaps2 *gst_caps2_union (const GstCaps2 *caps1, const GstCaps2 *caps2);
|
||||
GstCaps2 *gst_caps2_normalize (const GstCaps2 *caps);
|
||||
|
||||
#ifndef GST_DISABLE_LOADSAVE
|
||||
xmlNodePtr gst_caps2_save_thyself (const GstCaps2 *caps, xmlNodePtr parent);
|
||||
GstCaps2 *gst_caps2_load_thyself (xmlNodePtr parent);
|
||||
#endif
|
||||
|
||||
/* utility */
|
||||
void gst_caps2_replace (GstCaps2 **caps, const GstCaps2 *newcaps);
|
||||
gchar *gst_caps2_to_string (const GstCaps2 *caps);
|
||||
GstCaps2 *gst_caps2_from_string (const gchar *string);
|
||||
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
Loading…
Reference in a new issue