1 /* Simple Plugin API 2 * 3 * Copyright © 2018 Wim Taymans 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22 * DEALINGS IN THE SOFTWARE. 23 */ 24 25 #ifndef SPA_COMMAND_H 26 #define SPA_COMMAND_H 27 28 #ifdef __cplusplus 29 extern "C" { 30 #endif 31 32 #include <spa/utils/defs.h> 33 #include <spa/pod/pod.h> 34 35 struct spa_command_body { 36 struct spa_pod_object_body body; 37 }; 38 39 struct spa_command { 40 struct spa_pod pod; 41 struct spa_command_body body; 42 }; 43 44 #define SPA_COMMAND_TYPE(cmd) ((cmd)->body.body.type) 45 #define SPA_COMMAND_ID(cmd,type) (SPA_COMMAND_TYPE(cmd) == type ? \ 46 (cmd)->body.body.id : SPA_ID_INVALID) 47 48 #define SPA_COMMAND_INIT_FULL(t,size,type,id,...) (t) \ 49 { { size, SPA_TYPE_Object }, \ 50 { { type, id }, ##__VA_ARGS__ } } \ 51 52 #define SPA_COMMAND_INIT(type,id) \ 53 SPA_COMMAND_INIT_FULL(struct spa_command, \ 54 sizeof(struct spa_command_body), type, id) 55 56 57 #ifdef __cplusplus 58 } /* extern "C" */ 59 #endif 60 61 #endif /* SPA_COMMAND_H */ 62