mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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Redo the control code
Make a simple connection object that you can use to send and receive our commands.
This commit is contained in:
Wim Taymans
parent
d8903b708d
commit
d711e15f0a
6 changed files with 1007 additions and 1535 deletions
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/* Simple Plugin API
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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 __SPA_CONTROL_H__
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#define __SPA_CONTROL_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct _SpaControl SpaControl;
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typedef struct _SpaControlIter SpaControlIter;
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typedef struct _SpaControlBuilder SpaControlBuilder;
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#define SPA_CONTROL_VERSION 0
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#include <spa/defs.h>
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#include <spa/props.h>
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#include <spa/format.h>
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#include <spa/port.h>
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#include <spa/node.h>
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struct _SpaControl {
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size_t x[16];
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};
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SpaResult spa_control_init_data (SpaControl *control,
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void *data,
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size_t size,
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int *fds,
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unsigned int n_fds);
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SpaResult spa_control_clear (SpaControl *control);
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int spa_control_get_fd (SpaControl *control,
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unsigned int index,
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bool close);
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typedef enum {
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SPA_CONTROL_CMD_INVALID = 0,
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/* client to server */
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SPA_CONTROL_CMD_NODE_UPDATE = 1,
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SPA_CONTROL_CMD_PORT_UPDATE = 2,
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SPA_CONTROL_CMD_NODE_STATE_CHANGE = 3,
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SPA_CONTROL_CMD_PORT_STATUS_CHANGE = 4,
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/* server to client */
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SPA_CONTROL_CMD_ADD_PORT = 32,
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SPA_CONTROL_CMD_REMOVE_PORT = 33,
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SPA_CONTROL_CMD_SET_FORMAT = 34,
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SPA_CONTROL_CMD_SET_PROPERTY = 35,
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SPA_CONTROL_CMD_NODE_COMMAND = 36,
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/* both */
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SPA_CONTROL_CMD_ADD_MEM = 64,
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SPA_CONTROL_CMD_REMOVE_MEM = 65,
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SPA_CONTROL_CMD_USE_BUFFERS = 66,
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SPA_CONTROL_CMD_PROCESS_BUFFER = 67,
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SPA_CONTROL_CMD_NODE_EVENT = 68,
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} SpaControlCmd;
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/* SPA_CONTROL_CMD_NODE_UPDATE */
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typedef struct {
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#define SPA_CONTROL_CMD_NODE_UPDATE_MAX_INPUTS (1 << 0)
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#define SPA_CONTROL_CMD_NODE_UPDATE_MAX_OUTPUTS (1 << 1)
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#define SPA_CONTROL_CMD_NODE_UPDATE_PROPS (1 << 2)
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uint32_t change_mask;
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unsigned int max_input_ports;
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unsigned int max_output_ports;
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const SpaProps *props;
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} SpaControlCmdNodeUpdate;
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/* SPA_CONTROL_CMD_PORT_UPDATE */
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typedef struct {
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SpaDirection direction;
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uint32_t port_id;
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#define SPA_CONTROL_CMD_PORT_UPDATE_POSSIBLE_FORMATS (1 << 0)
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#define SPA_CONTROL_CMD_PORT_UPDATE_FORMAT (1 << 1)
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#define SPA_CONTROL_CMD_PORT_UPDATE_PROPS (1 << 2)
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#define SPA_CONTROL_CMD_PORT_UPDATE_INFO (1 << 3)
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uint32_t change_mask;
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unsigned int n_possible_formats;
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SpaFormat **possible_formats;
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SpaFormat *format;
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const SpaProps *props;
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const SpaPortInfo *info;
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} SpaControlCmdPortUpdate;
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/* SPA_CONTROL_CMD_PORT_STATUS_CHANGE */
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/* SPA_CONTROL_CMD_NODE_STATE_CHANGE */
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typedef struct {
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SpaNodeState state;
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} SpaControlCmdNodeStateChange;
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/* SPA_CONTROL_CMD_ADD_PORT */
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typedef struct {
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uint32_t seq;
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SpaDirection direction;
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uint32_t port_id;
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} SpaControlCmdAddPort;
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/* SPA_CONTROL_CMD_REMOVE_PORT */
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typedef struct {
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uint32_t seq;
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SpaDirection direction;
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uint32_t port_id;
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} SpaControlCmdRemovePort;
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/* SPA_CONTROL_CMD_SET_FORMAT */
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typedef struct {
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uint32_t seq;
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SpaDirection direction;
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uint32_t port_id;
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SpaPortFormatFlags flags;
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SpaFormat *format;
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} SpaControlCmdSetFormat;
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/* SPA_CONTROL_CMD_SET_PROPERTY */
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typedef struct {
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uint32_t seq;
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SpaDirection direction;
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uint32_t port_id;
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uint32_t id;
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size_t size;
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void *value;
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} SpaControlCmdSetProperty;
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/* SPA_CONTROL_CMD_NODE_COMMAND */
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typedef struct {
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uint32_t seq;
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SpaNodeCommand *command;
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} SpaControlCmdNodeCommand;
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/* SPA_CONTROL_CMD_ADD_MEM */
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typedef struct {
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SpaDirection direction;
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uint32_t port_id;
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uint32_t mem_id;
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SpaDataType type;
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unsigned int fd_index;
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uint32_t flags;
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off_t offset;
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size_t size;
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} SpaControlCmdAddMem;
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/* SPA_CONTROL_CMD_REMOVE_MEM */
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typedef struct {
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SpaDirection direction;
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uint32_t port_id;
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uint32_t mem_id;
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} SpaControlCmdRemoveMem;
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typedef struct {
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uint32_t mem_id;
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off_t offset;
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size_t size;
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} SpaControlMemRef;
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/* SPA_CONTROL_CMD_USE_BUFFERS */
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typedef struct {
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uint32_t seq;
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SpaDirection direction;
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uint32_t port_id;
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unsigned int n_buffers;
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SpaControlMemRef *buffers;
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} SpaControlCmdUseBuffers;
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/* SPA_CONTROL_CMD_PROCESS_BUFFER */
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typedef struct {
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SpaDirection direction;
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uint32_t port_id;
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uint32_t buffer_id;
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} SpaControlCmdProcessBuffer;
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/* SPA_CONTROL_CMD_NODE_EVENT */
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typedef struct {
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SpaNodeEvent *event;
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} SpaControlCmdNodeEvent;
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struct _SpaControlIter {
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/*< private >*/
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size_t x[16];
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};
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SpaResult spa_control_iter_init (SpaControlIter *iter,
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SpaControl *control);
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SpaResult spa_control_iter_next (SpaControlIter *iter);
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SpaResult spa_control_iter_end (SpaControlIter *iter);
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SpaControlCmd spa_control_iter_get_cmd (SpaControlIter *iter);
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void * spa_control_iter_get_data (SpaControlIter *iter,
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size_t *size);
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SpaResult spa_control_iter_set_data (SpaControlIter *iter,
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void *data,
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size_t size);
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SpaResult spa_control_iter_parse_cmd (SpaControlIter *iter,
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void *command);
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/**
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* SpaControlBuilder:
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*/
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struct _SpaControlBuilder {
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/*< private >*/
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size_t x[16];
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};
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SpaResult spa_control_builder_init_into (SpaControlBuilder *builder,
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void *data,
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size_t max_data,
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int *fds,
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unsigned int max_fds);
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#define spa_control_builder_init(b) spa_control_builder_init_into(b, NULL, 0, NULL, 0);
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SpaResult spa_control_builder_clear (SpaControlBuilder *builder);
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SpaResult spa_control_builder_end (SpaControlBuilder *builder,
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SpaControl *control);
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int spa_control_builder_add_fd (SpaControlBuilder *builder,
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int fd,
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bool close);
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SpaResult spa_control_builder_add_cmd (SpaControlBuilder *builder,
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SpaControlCmd cmd,
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void *command);
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/* IO */
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SpaResult spa_control_read (SpaControl *control,
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int fd,
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void *data,
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size_t max_data,
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int *fds,
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unsigned int max_fds);
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SpaResult spa_control_write (SpaControl *control,
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int fd);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* __SPA_CONTROL_H__ */
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