mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-16 07:00:00 -05:00
34450ed7ed
Replace the AsyncDone event with an explicit done callback in the node to signal completion of an async operation. Pass read and write fd together with the transport
114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
/* Simple Plugin API
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* Copyright (C) 2017 Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __SPA_META_H__
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#define __SPA_META_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <spa/defs.h>
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#include <spa/ringbuffer.h>
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#include <spa/type-map.h>
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/** \page page_meta Metadata
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*
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* Metadata contains extra information on a buffer.
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*/
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#define SPA_TYPE__Meta SPA_TYPE_POINTER_BASE "Meta"
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#define SPA_TYPE_META_BASE SPA_TYPE__Meta ":"
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#define SPA_TYPE_META__Header SPA_TYPE_META_BASE "Header"
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#define SPA_TYPE_META__Pointer SPA_TYPE_META_BASE "Pointer"
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#define SPA_TYPE_META__VideoCrop SPA_TYPE_META_BASE "VideoCrop"
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#define SPA_TYPE_META__Ringbuffer SPA_TYPE_META_BASE "Ringbuffer"
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#define SPA_TYPE_META__Shared SPA_TYPE_META_BASE "Shared"
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struct spa_type_meta {
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uint32_t Header;
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uint32_t Pointer;
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uint32_t VideoCrop;
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uint32_t Ringbuffer;
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uint32_t Shared;
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};
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static inline void spa_type_meta_map(struct spa_type_map *map, struct spa_type_meta *type)
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{
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if (type->Header == 0) {
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type->Header = spa_type_map_get_id(map, SPA_TYPE_META__Header);
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type->Pointer = spa_type_map_get_id(map, SPA_TYPE_META__Pointer);
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type->VideoCrop = spa_type_map_get_id(map, SPA_TYPE_META__VideoCrop);
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type->Ringbuffer = spa_type_map_get_id(map, SPA_TYPE_META__Ringbuffer);
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type->Shared = spa_type_map_get_id(map, SPA_TYPE_META__Shared);
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}
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}
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/** Describes essential buffer header metadata */
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struct spa_meta_header {
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#define SPA_META_HEADER_FLAG_DISCONT (1 << 0) /**< data is not continous with previous buffer */
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#define SPA_META_HEADER_FLAG_CORRUPTED (1 << 1) /**< data might be corrupted */
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#define SPA_META_HEADER_FLAG_MARKER (1 << 2) /**< media specific marker */
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#define SPA_META_HEADER_FLAG_HEADER (1 << 3) /**< data contains a codec specific header */
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#define SPA_META_HEADER_FLAG_GAP (1 << 4) /**< data contains media neutral data */
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#define SPA_META_HEADER_FLAG_DELTA_UNIT (1 << 5) /**< cannot be decoded independently */
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uint32_t flags; /**< flags */
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uint32_t seq; /**< sequence number, increments with a
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* media specific frequency */
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int64_t pts; /**< presentation timestamp */
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int64_t dts_offset; /**< decoding timestamp and a difference with pts */
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};
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/** Pointer metadata */
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struct spa_meta_pointer {
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uint32_t type; /**< the pointer type */
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void *ptr; /**< the pointer */
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};
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/** Video cropping metadata */
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struct spa_meta_video_crop {
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int32_t x, y; /**< x and y offsets */
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int32_t width, height; /**< width and height */
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};
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/** Ringbuffer metadata */
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struct spa_meta_ringbuffer {
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struct spa_ringbuffer ringbuffer; /**< the ringbuffer */
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};
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/** Describes the shared memory of a buffer is stored */
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struct spa_meta_shared {
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int32_t flags; /**< flags */
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int fd; /**< file descriptor of memory */
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int32_t offset; /**< offset in memory */
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uint32_t size; /**< size of memory */
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};
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/** A metadata element */
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struct spa_meta {
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uint32_t type; /**< metadata type */
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void *data; /**< pointer to metadata */
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uint32_t size; /**< size of metadata */
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};
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* __SPA_META_H__ */
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