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pinos: add new plugin API

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Experiment with new plugin API that is designed for speed, minimal
allocations and locking, for use with real-time scheduling.
This commit is contained in:
Wim Taymans 2016-06-02 11:16:13 +02:00
parent d374f50d28
commit b44d2d86b6
7 changed files with 1776 additions and 1 deletions
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104
pinos/spi/buffer.h Normal file
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/* Simple Plugin Interface
* Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __SPI_BUFFER_H__
#define __SPI_BUFFER_H__
G_BEGIN_DECLS
#include <inttypes.h>
#include <pinos/spi/result.h>
#include <pinos/spi/params.h>
typedef struct _SpiBuffer SpiBuffer;
typedef enum {
SPI_META_TYPE_INVALID = 0,
SPI_META_TYPE_HEADER,
} SpiMetaType;
typedef struct {
uint32_t flags;
uint32_t seq;
int64_t pts;
int64_t dts_offset;
} SpiMetaHeader;
typedef struct {
SpiMetaType type;
void *data;
size_t size;
} SpiMeta;
/**
* SpiDataType:
* @SPI_DATA_TYPE_INVALID: invalid data type, is ignored
* @SPI_DATA_TYPE_MEMPTR: data and size point to memory
* @SPI_DATA_TYPE_FD: data points to SpiDataFd
* @SPI_DATA_TYPE_FD: data points to SpiDataFd
*/
typedef enum {
SPI_DATA_TYPE_INVALID = 0,
SPI_DATA_TYPE_MEMPTR,
SPI_DATA_TYPE_FD,
} SpiDataType;
typedef struct {
int fd;
int offset;
size_t size;
} SpiDataFD;
/**
* SpiData:
* @id: user id
* @type: the type of data
* @data: pointer to data
* @size: size of data
*/
typedef struct {
SpiDataType type;
void *data;
size_t size;
} SpiData;
typedef void (*SpiNotify) (void *data);
/**
* SpiBuffer:
* @refcount: reference counter
* @notify: called when the refcount reaches 0
* @size: total size of the buffer
* @n_metas: number of metadata
* @metas: array of @n_metas metadata
* @n_datas: number of data pointers
* @datas: array of @n_datas data pointers
*/
struct _SpiBuffer {
volatile int refcount;
SpiNotify notify;
size_t size;
int n_metas;
SpiMeta *metas;
int n_datas;
SpiData *datas;
};
#endif /* __SPI_BUFFER_H__ */