mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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4b2520d173
Use separate header files Add pull-based alsasink Add audiotestsrc Implement negotiation and scheduling of audiotestsrc ! alsasink
132 lines
2.9 KiB
C
132 lines
2.9 KiB
C
/* Simple Plugin Interface
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* Copyright (C) 2016 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 __SPI_BUFFER_H__
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#define __SPI_BUFFER_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct _SpiBuffer SpiBuffer;
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#include <spi/defs.h>
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typedef enum {
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SPI_META_TYPE_INVALID = 0,
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SPI_META_TYPE_HEADER,
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} SpiMetaType;
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typedef struct {
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uint32_t flags;
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uint32_t seq;
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int64_t pts;
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int64_t dts_offset;
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} SpiMetaHeader;
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typedef struct {
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SpiMetaType type;
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void *data;
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size_t size;
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} SpiMeta;
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/**
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* SpiDataType:
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* @SPI_DATA_TYPE_INVALID: invalid data type, is ignored
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* @SPI_DATA_TYPE_MEMPTR: data and size point to memory
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* @SPI_DATA_TYPE_FD: data points to SpiDataFd
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* @SPI_DATA_TYPE_FD: data points to SpiDataFd
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*/
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typedef enum {
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SPI_DATA_TYPE_INVALID = 0,
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SPI_DATA_TYPE_MEMPTR,
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SPI_DATA_TYPE_FD,
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} SpiDataType;
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/**
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* SpiDataFd
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* fd: a file descriptor
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* offset: offset in the data referenced by @fd
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* @size: size of data referenced by fd
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*/
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typedef struct {
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int fd;
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unsigned int offset;
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size_t size;
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} SpiDataFD;
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/**
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* SpiData:
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* @id: user id
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* @type: the type of data
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* @data: pointer to data
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* @size: size of data
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*/
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typedef struct {
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SpiDataType type;
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void *data;
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size_t size;
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} SpiData;
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/**
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* SpiBuffer:
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* @refcount: reference counter
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* @notify: called when the refcount reaches 0
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* @size: total size of the buffer
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* @n_metas: number of metadata
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* @metas: array of @n_metas metadata
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* @n_datas: number of data pointers
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* @datas: array of @n_datas data pointers
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*/
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struct _SpiBuffer {
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volatile int refcount;
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SpiNotify notify;
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size_t size;
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unsigned int n_metas;
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SpiMeta *metas;
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unsigned int n_datas;
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SpiData *datas;
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};
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static inline SpiBuffer *
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spi_buffer_ref (SpiBuffer *buffer)
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{
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if (buffer != NULL)
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buffer->refcount++;
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return buffer;
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}
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static inline SpiBuffer *
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spi_buffer_unref (SpiBuffer *buffer)
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{
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if (buffer != NULL) {
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if (--buffer->refcount == 0) {
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if (buffer->notify)
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buffer->notify (buffer);
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return NULL;
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}
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}
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return buffer;
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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 /* __SPI_BUFFER_H__ */
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