type.h

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/* Simple Plugin API */
/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
/* SPDX-License-Identifier: MIT */
 
#ifndef SPA_TYPE_H
#define SPA_TYPE_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <spa/utils/defs.h>
#include <spa/utils/string.h>
 
#ifndef SPA_API_TYPE
 #ifdef SPA_API_IMPL
  #define SPA_API_TYPE SPA_API_IMPL
 #else
  #define SPA_API_TYPE static inline
 #endif
#endif
 
enum {
        /* Basic types */
        SPA_TYPE_START = 0x00000,
        SPA_TYPE_None,
        SPA_TYPE_Bool,
        SPA_TYPE_Id,
        SPA_TYPE_Int,
        SPA_TYPE_Long,
        SPA_TYPE_Float,
        SPA_TYPE_Double,
        SPA_TYPE_String,
        SPA_TYPE_Bytes,
        SPA_TYPE_Rectangle,
        SPA_TYPE_Fraction,
        SPA_TYPE_Bitmap,
        SPA_TYPE_Array,
        SPA_TYPE_Struct,
        SPA_TYPE_Object,
        SPA_TYPE_Sequence,
        SPA_TYPE_Pointer,
        SPA_TYPE_Fd,
        SPA_TYPE_Choice,
        SPA_TYPE_Pod,
        _SPA_TYPE_LAST,                         
        /* Pointers */
        SPA_TYPE_POINTER_START = 0x10000,
        SPA_TYPE_POINTER_Buffer,
        SPA_TYPE_POINTER_Meta,
        SPA_TYPE_POINTER_Dict,
        _SPA_TYPE_POINTER_LAST,                 
        /* Events */
        SPA_TYPE_EVENT_START = 0x20000,
        SPA_TYPE_EVENT_Device,
        SPA_TYPE_EVENT_Node,
        _SPA_TYPE_EVENT_LAST,                   
        /* Commands */
        SPA_TYPE_COMMAND_START = 0x30000,
        SPA_TYPE_COMMAND_Device,
        SPA_TYPE_COMMAND_Node,
        _SPA_TYPE_COMMAND_LAST,                 
        /* Objects */
        SPA_TYPE_OBJECT_START = 0x40000,
        SPA_TYPE_OBJECT_PropInfo,
        SPA_TYPE_OBJECT_Props,
        SPA_TYPE_OBJECT_Format,
        SPA_TYPE_OBJECT_ParamBuffers,
        SPA_TYPE_OBJECT_ParamMeta,
        SPA_TYPE_OBJECT_ParamIO,
        SPA_TYPE_OBJECT_ParamProfile,
        SPA_TYPE_OBJECT_ParamPortConfig,
        SPA_TYPE_OBJECT_ParamRoute,
        SPA_TYPE_OBJECT_Profiler,
        SPA_TYPE_OBJECT_ParamLatency,
        SPA_TYPE_OBJECT_ParamProcessLatency,
        SPA_TYPE_OBJECT_ParamTag,
        _SPA_TYPE_OBJECT_LAST,                  
        /* vendor extensions */
        SPA_TYPE_VENDOR_PipeWire        = 0x02000000,
 
        SPA_TYPE_VENDOR_Other           = 0x7f000000,
};
 
#define SPA_TYPE_INFO_BASE                      "Spa:"
 
#define SPA_TYPE_INFO_Flags                     SPA_TYPE_INFO_BASE "Flags"
#define SPA_TYPE_INFO_FLAGS_BASE                SPA_TYPE_INFO_Flags ":"
 
#define SPA_TYPE_INFO_Enum                      SPA_TYPE_INFO_BASE "Enum"
#define SPA_TYPE_INFO_ENUM_BASE                 SPA_TYPE_INFO_Enum ":"
 
#define SPA_TYPE_INFO_Pod                       SPA_TYPE_INFO_BASE "Pod"
#define SPA_TYPE_INFO_POD_BASE                  SPA_TYPE_INFO_Pod ":"
 
#define SPA_TYPE_INFO_Struct                    SPA_TYPE_INFO_POD_BASE "Struct"
#define SPA_TYPE_INFO_STRUCT_BASE               SPA_TYPE_INFO_Struct ":"
 
#define SPA_TYPE_INFO_Object                    SPA_TYPE_INFO_POD_BASE "Object"
#define SPA_TYPE_INFO_OBJECT_BASE               SPA_TYPE_INFO_Object ":"
 
#define SPA_TYPE_INFO_Pointer                   SPA_TYPE_INFO_BASE "Pointer"
#define SPA_TYPE_INFO_POINTER_BASE              SPA_TYPE_INFO_Pointer ":"
 
#define SPA_TYPE_INFO_Interface                 SPA_TYPE_INFO_POINTER_BASE "Interface"
#define SPA_TYPE_INFO_INTERFACE_BASE            SPA_TYPE_INFO_Interface ":"
 
#define SPA_TYPE_INFO_Event                     SPA_TYPE_INFO_OBJECT_BASE "Event"
#define SPA_TYPE_INFO_EVENT_BASE                SPA_TYPE_INFO_Event ":"
 
#define SPA_TYPE_INFO_Command                   SPA_TYPE_INFO_OBJECT_BASE "Command"
#define SPA_TYPE_INFO_COMMAND_BASE              SPA_TYPE_INFO_Command ":"
 
struct spa_type_info {
        uint32_t type;
        uint32_t parent;
        const char *name;
        const struct spa_type_info *values;
};
 
SPA_API_TYPE bool spa_type_is_a(const char *type, const char *parent)
{
        return type != NULL && parent != NULL && strncmp(type, parent, strlen(parent)) == 0;
}
 
SPA_API_TYPE const char *spa_type_short_name(const char *name)
{
        const char *h;
        if ((h = strrchr(name, ':')) != NULL)
                name = h + 1;
        return name;
}
 
SPA_API_TYPE uint32_t spa_type_from_short_name(const char *name,
                const struct spa_type_info *info, uint32_t unknown)
{
        int i;
        for (i = 0; info[i].name; i++) {
                if (spa_streq(name, spa_type_short_name(info[i].name)))
                        return info[i].type;
        }
        return unknown;
}
SPA_API_TYPE const char * spa_type_to_name(uint32_t type,
                const struct spa_type_info *info, const char *unknown)
                        return info[i].type; {…};
{
        int i;
        for (i = 0; info[i].name; i++) {
                if (info[i].type == type)
                        return info[i].name;
        int i; {…}
        }
        return unknown;
}
 
SPA_API_TYPE const char * spa_type_to_short_name(uint32_t type,
                const struct spa_type_info *info, const char *unknown)
{
        const char *n = spa_type_to_name(type, info, unknown);
        return unknown; {…}
        return n ? spa_type_short_name(n) : NULL;
}
 
#ifdef __cplusplus
}  /* extern "C" */
#endif
 
} {…}
#endif /* SPA_TYPE_H */
#endif /* SPA_TYPE_H */ {…}