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Diffstat (limited to 'spa/include/spa/param/param.h')
| -rw-r--r-- | spa/include/spa/param/param.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/spa/include/spa/param/param.h b/spa/include/spa/param/param.h new file mode 100644 index 0000000..1c26ef8 --- /dev/null +++ b/spa/include/spa/param/param.h @@ -0,0 +1,107 @@ +/* Simple Plugin API + * + * Copyright © 2018 Wim Taymans + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#ifndef SPA_PARAM_H +#define SPA_PARAM_H + +#ifdef __cplusplus +extern "C" { +#endif + +/** \defgroup spa_param Parameters + * Parameter value enumerations and type information + */ + +/** + * \addtogroup spa_param + * \{ + */ + +#include <spa/utils/defs.h> + +/** different parameter types that can be queried */ +enum spa_param_type { + SPA_PARAM_Invalid, /**< invalid */ + SPA_PARAM_PropInfo, /**< property information as SPA_TYPE_OBJECT_PropInfo */ + SPA_PARAM_Props, /**< properties as SPA_TYPE_OBJECT_Props */ + SPA_PARAM_EnumFormat, /**< available formats as SPA_TYPE_OBJECT_Format */ + SPA_PARAM_Format, /**< configured format as SPA_TYPE_OBJECT_Format */ + SPA_PARAM_Buffers, /**< buffer configurations as SPA_TYPE_OBJECT_ParamBuffers*/ + SPA_PARAM_Meta, /**< allowed metadata for buffers as SPA_TYPE_OBJECT_ParamMeta*/ + SPA_PARAM_IO, /**< configurable IO areas as SPA_TYPE_OBJECT_ParamIO */ + SPA_PARAM_EnumProfile, /**< profile enumeration as SPA_TYPE_OBJECT_ParamProfile */ + SPA_PARAM_Profile, /**< profile configuration as SPA_TYPE_OBJECT_ParamProfile */ + SPA_PARAM_EnumPortConfig, /**< port configuration enumeration as SPA_TYPE_OBJECT_ParamPortConfig */ + SPA_PARAM_PortConfig, /**< port configuration as SPA_TYPE_OBJECT_ParamPortConfig */ + SPA_PARAM_EnumRoute, /**< routing enumeration as SPA_TYPE_OBJECT_ParamRoute */ + SPA_PARAM_Route, /**< routing configuration as SPA_TYPE_OBJECT_ParamRoute */ + SPA_PARAM_Control, /**< Control parameter, a SPA_TYPE_Sequence */ + SPA_PARAM_Latency, /**< latency reporting, a SPA_TYPE_OBJECT_ParamLatency */ + SPA_PARAM_ProcessLatency, /**< processing latency, a SPA_TYPE_OBJECT_ParamProcessLatency */ +}; + +/** information about a parameter */ +struct spa_param_info { + uint32_t id; /**< enum spa_param_type */ +#define SPA_PARAM_INFO_SERIAL (1<<0) /**< bit to signal update even when the + * read/write flags don't change */ +#define SPA_PARAM_INFO_READ (1<<1) +#define SPA_PARAM_INFO_WRITE (1<<2) +#define SPA_PARAM_INFO_READWRITE (SPA_PARAM_INFO_WRITE|SPA_PARAM_INFO_READ) + uint32_t flags; + uint32_t user; /**< private user field. You can use this to keep + * state. */ + int32_t seq; /**< private seq field. You can use this to keep + * state of a pending update. */ + uint32_t padding[4]; +}; + +#define SPA_PARAM_INFO(id,flags) ((struct spa_param_info){ (id), (flags) }) + +enum spa_param_bitorder { + SPA_PARAM_BITORDER_unknown, /**< unknown bitorder */ + SPA_PARAM_BITORDER_msb, /**< most significant bit */ + SPA_PARAM_BITORDER_lsb, /**< least significant bit */ +}; + +enum spa_param_availability { + SPA_PARAM_AVAILABILITY_unknown, /**< unknown availability */ + SPA_PARAM_AVAILABILITY_no, /**< not available */ + SPA_PARAM_AVAILABILITY_yes, /**< available */ +}; + +#include <spa/param/buffers.h> +#include <spa/param/profile.h> +#include <spa/param/port-config.h> +#include <spa/param/route.h> + +/** + * \} + */ + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* SPA_PARAM_H */ |