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Remove dynamic types

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Do not use dynamic types anymore. The reason is that it's difficult:

- to maintain a shared type database over a network.
- the extra overhead when translating between processes and for
  maintaining the translation tables.
- race conditions in translating in RT-threads, this is a problem
  because we want to make event streams.

We now have simple enums with types and extension points for all
types. This is also nicer to use in general.
We don't need the mapper anymore or pass strings around as types.
There is a parallel type info system to get more info about ids and
enums and their hierarchy. It can also be used for debugging.
This commit is contained in:
Wim Taymans 2018-08-23 17:47:57 +02:00
parent e6977fa178
commit fca3e1d85d
162 changed files with 5200 additions and 7461 deletions
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35
spa/include/spa/buffer/meta.h
View file

@ -25,24 +25,16 @@ extern "C" {
#endif
#include <spa/utils/defs.h>
#include <spa/support/type-map.h>
/** \page page_meta Metadata
*
* Metadata contains extra information on a buffer.
*/
#define SPA_TYPE__Meta SPA_TYPE_POINTER_BASE "Meta"
#define SPA_TYPE_META_BASE SPA_TYPE__Meta ":"
#define SPA_TYPE_META__Header SPA_TYPE_META_BASE "Header"
#define SPA_TYPE_META__Region SPA_TYPE_META_BASE "Region"
#define SPA_TYPE_META_REGION_BASE SPA_TYPE_META__Region ":"
#define SPA_TYPE_META__RegionArray SPA_TYPE_META_BASE "RegionArray"
#define SPA_TYPE_META_REGION_ARRAY_BASE SPA_TYPE_META__RegionArray ":"
#define SPA_TYPE_META__VideoCrop SPA_TYPE_META_REGION_BASE "VideoCrop"
#define SPA_TYPE_META__VideoDamage SPA_TYPE_META_REGION_ARRAY_BASE "VideoDamage"
enum spa_meta_type {
SPA_META_Header,
SPA_META_VideoCrop,
SPA_META_VideoDamage,
};
/**
* A metadata element.
@ -52,7 +44,7 @@ extern "C" {
* itself.
*/
struct spa_meta {
uint32_t type; /**< metadata type */
uint32_t type; /**< metadata type, one of enum spa_meta_type */
void *data; /**< pointer to metadata */
uint32_t size; /**< size of metadata */
};
@ -91,21 +83,6 @@ struct spa_meta_region {
spa_meta_check(pos, meta); \
(pos)++)
struct spa_type_meta {
uint32_t Header;
uint32_t VideoCrop;
uint32_t VideoDamage;
};
static inline void spa_type_meta_map(struct spa_type_map *map, struct spa_type_meta *type)
{
if (type->Header == 0) {
type->Header = spa_type_map_get_id(map, SPA_TYPE_META__Header);
type->VideoCrop = spa_type_map_get_id(map, SPA_TYPE_META__VideoCrop);
type->VideoDamage = spa_type_map_get_id(map, SPA_TYPE_META__VideoDamage);
}
}
#ifdef __cplusplus
} /* extern "C" */
#endif