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separated the properties from the capabilities as we might use the properties for metadata too.

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Original commit message from CVS:
separated the properties from the capabilities as we might use the properties
for metadata too.
This commit is contained in:
Wim Taymans 2000-12-07 18:37:56 +00:00
parent 1af7640685
commit eaa6e55855
7 changed files with 470 additions and 359 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
gst/Makefile.am
View file

@ -38,6 +38,7 @@ libgst_la_SOURCES = \
gstconnection.c \
gsttype.c \
gstcaps.c \
gstprops.c \
gstplugin.c \
gstutils.c \
gsttrace.c \
@ -67,6 +68,7 @@ libgstinclude_HEADERS = \
gstconnection.h \
gsttype.h \
gstcaps.h \
gstprops.h \
gstplugin.h \
gstutils.h \
gsttrace.h \

1
gst/gst.h
View file

@ -49,6 +49,7 @@
#include <gst/gstconnection.h>
#include <gst/gsttype.h>
#include <gst/gstcaps.h>
#include <gst/gstprops.h>
#include <gst/gstplugin.h>
#include <gst/gstutils.h>
#include <gst/gsttrace.h>

331
gst/gstcaps.c
View file

@ -20,70 +20,12 @@
//#define DEBUG_ENABLED
#include <stdarg.h>
#include <gst/gstcapsprivate.h>
static gboolean gst_caps_entry_check_compatibility (GstCapsEntry *entry1, GstCapsEntry *entry2);
#include <gst/gst.h>
void
_gst_caps_initialize (void)
{
}
static GstCapsEntry *
gst_caps_create_entry (GstCapsFactory factory, gint *skipped)
{
GstCapsFactoryEntry tag;
GstCapsEntry *entry;
guint i=0;
entry = g_new0 (GstCapsEntry, 1);
tag = factory[i++];
switch (GPOINTER_TO_INT (tag)) {
case GST_CAPS_INT_ID:
entry->capstype = GST_CAPS_INT_ID_NUM;
entry->data.int_data = GPOINTER_TO_INT (factory[i++]);
break;
case GST_CAPS_INT_RANGE_ID:
entry->capstype = GST_CAPS_INT_RANGE_ID_NUM;
entry->data.int_range_data.min = GPOINTER_TO_INT (factory[i++]);
entry->data.int_range_data.max = GPOINTER_TO_INT (factory[i++]);
break;
case GST_CAPS_FOURCC_ID:
entry->capstype = GST_CAPS_FOURCC_ID_NUM;
entry->data.fourcc_data = GPOINTER_TO_INT (factory[i++]);
break;
case GST_CAPS_LIST_ID:
g_print("gstcaps: list not allowed in list\n");
break;
case GST_CAPS_BOOL_ID:
entry->capstype = GST_CAPS_BOOL_ID_NUM;
entry->data.bool_data = GPOINTER_TO_INT (factory[i++]);
break;
default:
g_print("gstcaps: unknown caps id found\n");
g_free (entry);
entry = NULL;
break;
}
*skipped = i;
return entry;
}
static gint
caps_compare_func (gconstpointer a,
gconstpointer b)
{
GstCapsEntry *entry1 = (GstCapsEntry *)a;
GstCapsEntry *entry2 = (GstCapsEntry *)b;
return (entry1->propid - entry2->propid);
}
/**
* gst_caps_register:
* @factory: the factory to register
@ -99,7 +41,6 @@ gst_caps_register (GstCapsFactory factory)
gint i = 0;
guint16 typeid;
GstCaps *caps;
gint skipped;
g_return_val_if_fail (factory != NULL, NULL);
@ -122,110 +63,11 @@ gst_caps_register (GstCapsFactory factory)
g_return_val_if_fail (caps != NULL, NULL);
caps->id = typeid;
caps->properties = NULL;
tag = factory[i++];
while (tag) {
GQuark quark;
GstCapsEntry *entry;
quark = g_quark_from_string ((gchar *)tag);
tag = factory[i];
switch (GPOINTER_TO_INT (tag)) {
case GST_CAPS_LIST_ID:
{
GstCapsEntry *list_entry;
entry = g_new0 (GstCapsEntry, 1);
entry->propid = quark;
entry->capstype = GST_CAPS_LIST_ID_NUM;
entry->data.list_data.entries = NULL;
i++; // skip list tag
tag = factory[i];
while (tag) {
list_entry = gst_caps_create_entry (&factory[i], &skipped);
list_entry->propid = quark;
i += skipped;
tag = factory[i];
entry->data.list_data.entries = g_list_prepend (entry->data.list_data.entries, list_entry);
}
entry->data.list_data.entries = g_list_reverse (entry->data.list_data.entries);
i++; //skip NULL (list end)
break;
}
default:
{
entry = gst_caps_create_entry (&factory[i], &skipped);
entry->propid = quark;
i += skipped;
break;
}
}
caps->properties = g_slist_insert_sorted (caps->properties, entry, caps_compare_func);
tag = factory[i++];
}
caps->properties = gst_props_register (&factory[i]);
return caps;
}
static void
gst_caps_dump_entry_func (GstCapsEntry *entry)
{
switch (entry->capstype) {
case GST_CAPS_INT_ID_NUM:
g_print("gstcaps: int %d\n", entry->data.int_data);
break;
case GST_CAPS_INT_RANGE_ID_NUM:
g_print("gstcaps: int range %d %d\n",
entry->data.int_range_data.min,
entry->data.int_range_data.max);
break;
case GST_CAPS_FOURCC_ID_NUM:
g_print("gstcaps: fourcc 0x%08x (%4.4s)\n", entry->data.fourcc_data, (gchar *)&entry->data.fourcc_data);
break;
case GST_CAPS_BOOL_ID_NUM:
g_print("gstcaps: boolean %d\n", entry->data.bool_data);
break;
default:
g_print("gstcaps: **illegal entry**\n");
break;
}
}
static void
gst_caps_dump_list_func (gpointer entry,
gpointer list_entry)
{
gst_caps_dump_entry_func ((GstCapsEntry *)entry);
}
static void
gst_caps_dump_func (gpointer data,
gpointer user_data)
{
GstCapsEntry *entry;
entry = (GstCapsEntry *)data;
g_print("gstcaps: property type \"%s\"\n", g_quark_to_string (entry->propid));
switch (entry->capstype) {
case GST_CAPS_LIST_ID_NUM:
{
g_print("gstcaps: list type (\n");
g_list_foreach (entry->data.list_data.entries, gst_caps_dump_list_func, entry);
g_print("gstcaps: )\n");
break;
}
default:
gst_caps_dump_entry_func (entry);
break;
}
}
/**
* gst_caps_dump:
@ -240,105 +82,11 @@ gst_caps_dump (GstCaps *caps)
g_print("gstcaps: {\ngstcaps: mime type \"%d\"\n", caps->id);
g_slist_foreach (caps->properties, gst_caps_dump_func, caps);
gst_props_dump (caps->properties);
g_print("gstcaps: }\n");
}
/* entry2 is always a list, entry1 never is */
static gboolean
gst_caps_entry_check_list_compatibility (GstCapsEntry *entry1, GstCapsEntry *entry2)
{
GList *entrylist = entry2->data.list_data.entries;
gboolean found = FALSE;
while (entrylist && !found) {
GstCapsEntry *entry = (GstCapsEntry *) entrylist->data;
found |= gst_caps_entry_check_compatibility (entry1, entry);
entrylist = g_list_next (entrylist);
}
return found;
}
static gboolean
gst_caps_entry_check_compatibility (GstCapsEntry *entry1, GstCapsEntry *entry2)
{
DEBUG ("compare: %s %s\n", g_quark_to_string (entry1->propid),
g_quark_to_string (entry2->propid));
switch (entry1->capstype) {
case GST_CAPS_LIST_ID_NUM:
{
GList *entrylist = entry1->data.list_data.entries;
gboolean valid = TRUE; // innocent until proven guilty
while (entrylist && valid) {
GstCapsEntry *entry = (GstCapsEntry *) entrylist->data;
valid &= gst_caps_entry_check_compatibility (entry, entry2);
entrylist = g_list_next (entrylist);
}
return valid;
}
case GST_CAPS_INT_RANGE_ID_NUM:
switch (entry2->capstype) {
// a - b <---> a - c
case GST_CAPS_INT_RANGE_ID_NUM:
return (entry2->data.int_range_data.min <= entry1->data.int_range_data.min &&
entry2->data.int_range_data.max >= entry1->data.int_range_data.max);
case GST_CAPS_LIST_ID_NUM:
return gst_caps_entry_check_list_compatibility (entry1, entry2);
default:
return FALSE;
}
break;
case GST_CAPS_FOURCC_ID_NUM:
switch (entry2->capstype) {
// b <---> a
case GST_CAPS_FOURCC_ID_NUM:
return (entry2->data.fourcc_data == entry1->data.fourcc_data);
// b <---> a,b,c
case GST_CAPS_LIST_ID_NUM:
return gst_caps_entry_check_list_compatibility (entry1, entry2);
default:
return FALSE;
}
break;
case GST_CAPS_INT_ID_NUM:
switch (entry2->capstype) {
// b <---> a - d
case GST_CAPS_INT_RANGE_ID_NUM:
return (entry2->data.int_range_data.min <= entry1->data.int_data &&
entry2->data.int_range_data.max >= entry1->data.int_data);
// b <---> a
case GST_CAPS_INT_ID_NUM:
return (entry2->data.int_data == entry1->data.int_data);
// b <---> a,b,c
case GST_CAPS_LIST_ID_NUM:
return gst_caps_entry_check_list_compatibility (entry1, entry2);
default:
return FALSE;
}
break;
case GST_CAPS_BOOL_ID_NUM:
switch (entry2->capstype) {
// t <---> t
case GST_CAPS_BOOL_ID_NUM:
return (entry2->data.bool_data == entry1->data.bool_data);
case GST_CAPS_LIST_ID_NUM:
return gst_caps_entry_check_list_compatibility (entry1, entry2);
default:
return FALSE;
}
default:
break;
}
return FALSE;
}
/**
* gst_caps_check_compatibility:
@ -352,81 +100,12 @@ gst_caps_entry_check_compatibility (GstCapsEntry *entry1, GstCapsEntry *entry2)
gboolean
gst_caps_check_compatibility (GstCaps *fromcaps, GstCaps *tocaps)
{
GSList *sourcelist;
GSList *sinklist;
gint missing = 0;
gint more = 0;
gboolean compatible = TRUE;
g_return_val_if_fail (fromcaps != NULL, FALSE);
g_return_val_if_fail (tocaps != NULL, FALSE);
if (fromcaps->id != tocaps->id)
return FALSE;
sourcelist = fromcaps->properties;
sinklist = tocaps->properties;
while (sourcelist && sinklist && compatible) {
GstCapsEntry *entry1;
GstCapsEntry *entry2;
entry1 = (GstCapsEntry *)sourcelist->data;
entry2 = (GstCapsEntry *)sinklist->data;
while (entry1->propid < entry2->propid) {
DEBUG ("source is more specific in \"%s\"\n", g_quark_to_string (entry1->propid));
more++;
sourcelist = g_slist_next (sourcelist);
if (sourcelist) entry1 = (GstCapsEntry *)sourcelist->data;
else goto end;
}
while (entry1->propid > entry2->propid) {
DEBUG ("source has missing property \"%s\"\n", g_quark_to_string (entry2->propid));
missing++;
sinklist = g_slist_next (sinklist);
if (sinklist) entry2 = (GstCapsEntry *)sinklist->data;
else goto end;
}
compatible &= gst_caps_entry_check_compatibility (entry1, entry2);
sourcelist = g_slist_next (sourcelist);
sinklist = g_slist_next (sinklist);
}
end:
if (missing)
return FALSE;
return compatible;
return gst_props_check_compatibility (fromcaps->properties, tocaps->properties);
}
/**
* gst_caps_register_va:
* @factory: the factories to register
*
* Register the given factories.
*
* Returns: A list of the registered factories
*/
GList *
gst_caps_register_va (GstCapsFactory factory, ...)
{
va_list var_args;
GstCapsFactoryEntry *current_factory;
va_start (var_args, factory);
current_factory = (GstCapsFactoryEntry *) factory;
while (current_factory) {
gst_caps_register (current_factory);
current_factory = va_arg (var_args, GstCapsFactoryEntry *);
}
va_end(var_args);
return NULL;
}

29
gst/gstcaps.h
View file

@ -21,47 +21,24 @@
#ifndef __GST_CAPS_H__
#define __GST_CAPS_H__
#include <gst/gst.h>
#include <glib.h>
#include <gst/gstprops.h>
typedef struct _GstCaps GstCaps;
typedef gpointer GstCapsFactoryEntry;
typedef GstCapsFactoryEntry GstCapsFactory[];
typedef GstCapsFactory *GstCapsListFactory[];
typedef enum {
GST_CAPS_END_ID_NUM = 0,
GST_CAPS_LIST_ID_NUM,
GST_CAPS_INT_ID_NUM,
GST_CAPS_INT_RANGE_ID_NUM,
GST_CAPS_FOURCC_ID_NUM,
GST_CAPS_BOOL_ID_NUM,
} GstCapsId;
#define GST_CAPS_LIST_ID GINT_TO_POINTER(GST_CAPS_LIST_ID_NUM)
#define GST_CAPS_INT_ID GINT_TO_POINTER(GST_CAPS_INT_ID_NUM)
#define GST_CAPS_INT_RANGE_ID GINT_TO_POINTER(GST_CAPS_INT_RANGE_ID_NUM)
#define GST_CAPS_FOURCC_ID GINT_TO_POINTER(GST_CAPS_FOURCC_ID_NUM)
#define GST_CAPS_BOOL_ID GINT_TO_POINTER(GST_CAPS_BOOL_ID_NUM)
#define GST_CAPS_LIST(a...) GST_CAPS_LIST_ID,##a,NULL
#define GST_CAPS_INT(a) GST_CAPS_INT_ID,(GINT_TO_POINTER(a))
#define GST_CAPS_INT_RANGE(a,b) GST_CAPS_INT_RANGE_ID,(GINT_TO_POINTER(a)),(GINT_TO_POINTER(b))
#define GST_CAPS_FOURCC(a,b,c,d) GST_CAPS_FOURCC_ID,(GINT_TO_POINTER((a)|(b)<<8|(c)<<16|(d)<<24))
#define GST_CAPS_FOURCC_INT(a) GST_CAPS_FOURCC_ID,(GINT_TO_POINTER(a))
#define GST_CAPS_BOOLEAN(a) GST_CAPS_BOOL_ID,(GINT_TO_POINTER(a))
struct _GstCaps {
guint16 id; /* type id (major type) */
GSList *properties; /* properties for this capability */
GstProps *properties; /* properties for this capability */
};
/* initialize the subsystem */
void _gst_caps_initialize (void);
GstCaps* gst_caps_register (GstCapsFactory factory);
GList* gst_caps_register_va (GstCapsFactory factory,...);
void gst_caps_dump (GstCaps *caps);

385
gst/gstprops.c Normal file
View file

@ -0,0 +1,385 @@
/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
//#define DEBUG_ENABLED
#include <stdarg.h>
#include <gst/gst.h>
#include <gst/gstpropsprivate.h>
static gboolean gst_props_entry_check_compatibility (GstPropsEntry *entry1, GstPropsEntry *entry2);
void
_gst_props_initialize (void)
{
}
static GstPropsEntry *
gst_props_create_entry (GstPropsFactory factory, gint *skipped)
{
GstPropsFactoryEntry tag;
GstPropsEntry *entry;
guint i=0;
entry = g_new0 (GstPropsEntry, 1);
tag = factory[i++];
switch (GPOINTER_TO_INT (tag)) {
case GST_PROPS_INT_ID:
entry->propstype = GST_PROPS_INT_ID_NUM;
entry->data.int_data = GPOINTER_TO_INT (factory[i++]);
break;
case GST_PROPS_INT_RANGE_ID:
entry->propstype = GST_PROPS_INT_RANGE_ID_NUM;
entry->data.int_range_data.min = GPOINTER_TO_INT (factory[i++]);
entry->data.int_range_data.max = GPOINTER_TO_INT (factory[i++]);
break;
case GST_PROPS_FOURCC_ID:
entry->propstype = GST_PROPS_FOURCC_ID_NUM;
entry->data.fourcc_data = GPOINTER_TO_INT (factory[i++]);
break;
case GST_PROPS_LIST_ID:
g_print("gstprops: list not allowed in list\n");
break;
case GST_PROPS_BOOL_ID:
entry->propstype = GST_PROPS_BOOL_ID_NUM;
entry->data.bool_data = GPOINTER_TO_INT (factory[i++]);
break;
default:
g_print("gstprops: unknown props id found\n");
g_free (entry);
entry = NULL;
break;
}
*skipped = i;
return entry;
}
static gint
props_compare_func (gconstpointer a,
gconstpointer b)
{
GstPropsEntry *entry1 = (GstPropsEntry *)a;
GstPropsEntry *entry2 = (GstPropsEntry *)b;
return (entry1->propid - entry2->propid);
}
/**
* gst_props_register:
* @factory: the factory to register
*
* Register the factory.
*
* Returns: The registered capability
*/
GstProps *
gst_props_register (GstPropsFactory factory)
{
GstPropsFactoryEntry tag;
gint i = 0;
GstProps *props;
gint skipped;
g_return_val_if_fail (factory != NULL, NULL);
props = g_new0 (GstProps, 1);
g_return_val_if_fail (props != NULL, NULL);
props->properties = NULL;
tag = factory[i++];
while (tag) {
GQuark quark;
GstPropsEntry *entry;
quark = g_quark_from_string ((gchar *)tag);
tag = factory[i];
switch (GPOINTER_TO_INT (tag)) {
case GST_PROPS_LIST_ID:
{
GstPropsEntry *list_entry;
entry = g_new0 (GstPropsEntry, 1);
entry->propid = quark;
entry->propstype = GST_PROPS_LIST_ID_NUM;
entry->data.list_data.entries = NULL;
i++; // skip list tag
tag = factory[i];
while (tag) {
list_entry = gst_props_create_entry (&factory[i], &skipped);
list_entry->propid = quark;
i += skipped;
tag = factory[i];
entry->data.list_data.entries = g_list_prepend (entry->data.list_data.entries, list_entry);
}
entry->data.list_data.entries = g_list_reverse (entry->data.list_data.entries);
i++; //skip NULL (list end)
break;
}
default:
{
entry = gst_props_create_entry (&factory[i], &skipped);
entry->propid = quark;
i += skipped;
break;
}
}
props->properties = g_slist_insert_sorted (props->properties, entry, props_compare_func);
tag = factory[i++];
}
return props;
}
static void
gst_props_dump_entry_func (GstPropsEntry *entry)
{
switch (entry->propstype) {
case GST_PROPS_INT_ID_NUM:
g_print("gstprops: int %d\n", entry->data.int_data);
break;
case GST_PROPS_INT_RANGE_ID_NUM:
g_print("gstprops: int range %d %d\n",
entry->data.int_range_data.min,
entry->data.int_range_data.max);
break;
case GST_PROPS_FOURCC_ID_NUM:
g_print("gstprops: fourcc 0x%08x (%4.4s)\n", entry->data.fourcc_data, (gchar *)&entry->data.fourcc_data);
break;
case GST_PROPS_BOOL_ID_NUM:
g_print("gstprops: boolean %d\n", entry->data.bool_data);
break;
default:
g_print("gstprops: **illegal entry**\n");
break;
}
}
static void
gst_props_dump_list_func (gpointer entry,
gpointer list_entry)
{
gst_props_dump_entry_func ((GstPropsEntry *)entry);
}
static void
gst_props_dump_func (gpointer data,
gpointer user_data)
{
GstPropsEntry *entry;
entry = (GstPropsEntry *)data;
g_print("gstprops: property type \"%s\"\n", g_quark_to_string (entry->propid));
switch (entry->propstype) {
case GST_PROPS_LIST_ID_NUM:
{
g_print("gstprops: list type (\n");
g_list_foreach (entry->data.list_data.entries, gst_props_dump_list_func, entry);
g_print("gstprops: )\n");
break;
}
default:
gst_props_dump_entry_func (entry);
break;
}
}
/**
* gst_props_dump:
* @props: the capability to dump
*
* Dumps the contents of the capabilty one the console
*/
void
gst_props_dump (GstProps *props)
{
g_return_if_fail (props != NULL);
g_print("gstprops: {\n");
g_slist_foreach (props->properties, gst_props_dump_func, props);
g_print("gstprops: }\n");
}
/* entry2 is always a list, entry1 never is */
static gboolean
gst_props_entry_check_list_compatibility (GstPropsEntry *entry1, GstPropsEntry *entry2)
{
GList *entrylist = entry2->data.list_data.entries;
gboolean found = FALSE;
while (entrylist && !found) {
GstPropsEntry *entry = (GstPropsEntry *) entrylist->data;
found |= gst_props_entry_check_compatibility (entry1, entry);
entrylist = g_list_next (entrylist);
}
return found;
}
static gboolean
gst_props_entry_check_compatibility (GstPropsEntry *entry1, GstPropsEntry *entry2)
{
DEBUG ("compare: %s %s\n", g_quark_to_string (entry1->propid),
g_quark_to_string (entry2->propid));
switch (entry1->propstype) {
case GST_PROPS_LIST_ID_NUM:
{
GList *entrylist = entry1->data.list_data.entries;
gboolean valid = TRUE; // innocent until proven guilty
while (entrylist && valid) {
GstPropsEntry *entry = (GstPropsEntry *) entrylist->data;
valid &= gst_props_entry_check_compatibility (entry, entry2);
entrylist = g_list_next (entrylist);
}
return valid;
}
case GST_PROPS_INT_RANGE_ID_NUM:
switch (entry2->propstype) {
// a - b <---> a - c
case GST_PROPS_INT_RANGE_ID_NUM:
return (entry2->data.int_range_data.min <= entry1->data.int_range_data.min &&
entry2->data.int_range_data.max >= entry1->data.int_range_data.max);
case GST_PROPS_LIST_ID_NUM:
return gst_props_entry_check_list_compatibility (entry1, entry2);
default:
return FALSE;
}
break;
case GST_PROPS_FOURCC_ID_NUM:
switch (entry2->propstype) {
// b <---> a
case GST_PROPS_FOURCC_ID_NUM:
return (entry2->data.fourcc_data == entry1->data.fourcc_data);
// b <---> a,b,c
case GST_PROPS_LIST_ID_NUM:
return gst_props_entry_check_list_compatibility (entry1, entry2);
default:
return FALSE;
}
break;
case GST_PROPS_INT_ID_NUM:
switch (entry2->propstype) {
// b <---> a - d
case GST_PROPS_INT_RANGE_ID_NUM:
return (entry2->data.int_range_data.min <= entry1->data.int_data &&
entry2->data.int_range_data.max >= entry1->data.int_data);
// b <---> a
case GST_PROPS_INT_ID_NUM:
return (entry2->data.int_data == entry1->data.int_data);
// b <---> a,b,c
case GST_PROPS_LIST_ID_NUM:
return gst_props_entry_check_list_compatibility (entry1, entry2);
default:
return FALSE;
}
break;
case GST_PROPS_BOOL_ID_NUM:
switch (entry2->propstype) {
// t <---> t
case GST_PROPS_BOOL_ID_NUM:
return (entry2->data.bool_data == entry1->data.bool_data);
case GST_PROPS_LIST_ID_NUM:
return gst_props_entry_check_list_compatibility (entry1, entry2);
default:
return FALSE;
}
default:
break;
}
return FALSE;
}
/**
* gst_props_check_compatibility:
* @fromprops: a capabilty
* @toprops: a capabilty
*
* Checks whether two capabilities are compatible
*
* Returns: true if compatible, false otherwise
*/
gboolean
gst_props_check_compatibility (GstProps *fromprops, GstProps *toprops)
{
GSList *sourcelist;
GSList *sinklist;
gint missing = 0;
gint more = 0;
gboolean compatible = TRUE;
g_return_val_if_fail (fromprops != NULL, FALSE);
g_return_val_if_fail (toprops != NULL, FALSE);
sourcelist = fromprops->properties;
sinklist = toprops->properties;
while (sourcelist && sinklist && compatible) {
GstPropsEntry *entry1;
GstPropsEntry *entry2;
entry1 = (GstPropsEntry *)sourcelist->data;
entry2 = (GstPropsEntry *)sinklist->data;
while (entry1->propid < entry2->propid) {
DEBUG ("source is more specific in \"%s\"\n", g_quark_to_string (entry1->propid));
more++;
sourcelist = g_slist_next (sourcelist);
if (sourcelist) entry1 = (GstPropsEntry *)sourcelist->data;
else goto end;
}
while (entry1->propid > entry2->propid) {
DEBUG ("source has missing property \"%s\"\n", g_quark_to_string (entry2->propid));
missing++;
sinklist = g_slist_next (sinklist);
if (sinklist) entry2 = (GstPropsEntry *)sinklist->data;
else goto end;
}
compatible &= gst_props_entry_check_compatibility (entry1, entry2);
sourcelist = g_slist_next (sourcelist);
sinklist = g_slist_next (sinklist);
}
end:
if (missing)
return FALSE;
return compatible;
}

67
gst/gstprops.h Normal file
View file

@ -0,0 +1,67 @@
/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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_PROPS_H__
#define __GST_PROPS_H__
#include <glib.h>
typedef struct _GstProps GstProps;
typedef gpointer GstPropsFactoryEntry;
typedef GstPropsFactoryEntry GstPropsFactory[];
typedef GstPropsFactory *GstPropsListFactory[];
typedef enum {
GST_PROPS_END_ID_NUM = 0,
GST_PROPS_LIST_ID_NUM,
GST_PROPS_INT_ID_NUM,
GST_PROPS_INT_RANGE_ID_NUM,
GST_PROPS_FOURCC_ID_NUM,
GST_PROPS_BOOL_ID_NUM,
} GstPropsId;
#define GST_PROPS_LIST_ID GINT_TO_POINTER(GST_PROPS_LIST_ID_NUM)
#define GST_PROPS_INT_ID GINT_TO_POINTER(GST_PROPS_INT_ID_NUM)
#define GST_PROPS_INT_RANGE_ID GINT_TO_POINTER(GST_PROPS_INT_RANGE_ID_NUM)
#define GST_PROPS_FOURCC_ID GINT_TO_POINTER(GST_PROPS_FOURCC_ID_NUM)
#define GST_PROPS_BOOL_ID GINT_TO_POINTER(GST_PROPS_BOOL_ID_NUM)
#define GST_PROPS_LIST(a...) GST_PROPS_LIST_ID,##a,NULL
#define GST_PROPS_INT(a) GST_PROPS_INT_ID,(GINT_TO_POINTER(a))
#define GST_PROPS_INT_RANGE(a,b) GST_PROPS_INT_RANGE_ID,(GINT_TO_POINTER(a)),(GINT_TO_POINTER(b))
#define GST_PROPS_FOURCC(a,b,c,d) GST_PROPS_FOURCC_ID,(GINT_TO_POINTER((a)|(b)<<8|(c)<<16|(d)<<24))
#define GST_PROPS_FOURCC_INT(a) GST_PROPS_FOURCC_ID,(GINT_TO_POINTER(a))
#define GST_PROPS_BOOLEAN(a) GST_PROPS_BOOL_ID,(GINT_TO_POINTER(a))
struct _GstProps {
GSList *properties; /* properties for this capability */
};
/* initialize the subsystem */
void _gst_props_initialize (void);
GstProps* gst_props_register (GstPropsFactory factory);
void gst_props_dump (GstProps *props);
gboolean gst_props_check_compatibility (GstProps *props1, GstProps *props2);
#endif /* __GST_PROPS_H__ */

14
gst/gstcapsprivate.h → gst/gstpropsprivate.h
View file

@ -18,16 +18,16 @@
*/
#ifndef __GST_CAPS_PRIV_H__
#define __GST_CAPS_PRIV_H__
#ifndef __GST_PROPS_PRIV_H__
#define __GST_PROPS_PRIV_H__
#include <gst/gstcaps.h>
#include <gst/gstprops.h>
typedef struct _GstCapsEntry GstCapsEntry;
typedef struct _GstPropsEntry GstPropsEntry;
struct _GstCapsEntry {
struct _GstPropsEntry {
GQuark propid;
GstCapsId capstype;
GstPropsId propstype;
union {
/* flat values */
@ -46,4 +46,4 @@ struct _GstCapsEntry {
} data;
};
#endif /* __GST_CAPS_PRIV_H__ */
#endif /* __GST_PROPS_PRIV_H__ */