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pipewire/spa/plugins/remote/proxy.c
Wim Taymans 7aa79a2a0d Add audiotestsrc 
Work on idle poll
Move node state to the node interface so that we can actually get it in
the sync case.
Add enabled field to the poll event
Work on audiotestsrc
2016-09-05 16:23:40 +02:00

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/* Spa
* 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.
*/
#include <string.h>
#include <stddef.h>
#include <stdio.h>
#include <poll.h>
#include <sys/socket.h>
#include <errno.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include <spa/control.h>
#include <spa/debug.h>
#include <spa/memory.h>
#include <spa/node.h>
#define MAX_INPUTS 64
#define MAX_OUTPUTS 64
#define MAX_PORTS (MAX_INPUTS + MAX_OUTPUTS)
#define CHECK_FREE_PORT_ID(this,id) ((id) < MAX_PORTS && !(this)->ports[id].valid)
#define CHECK_PORT_ID(this,id) ((id) < MAX_PORTS && (this)->ports[id].valid)
#define CHECK_PORT_ID_IN(this,id) (CHECK_PORT_ID(this,id) && (id < this->max_inputs))
#define CHECK_PORT_ID_OUT(this,id) (CHECK_PORT_ID(this,id) && (id >= this->max_inputs))
typedef struct _SpaProxy SpaProxy;
typedef struct {
SpaProps props;
int socketfd;
} SpaProxyProps;
typedef struct {
bool valid;
SpaPortInfo info;
SpaFormat *format;
unsigned int n_formats;
SpaFormat **formats;
SpaPortStatus status;
unsigned int n_buffers;
SpaBuffer **buffers;
uint32_t buffer_id;
} SpaProxyPort;
struct _SpaProxy {
SpaHandle handle;
SpaNode node;
SpaProxyProps props[2];
SpaEventCallback event_cb;
void *user_data;
SpaPollFd fds[1];
SpaPollItem poll;
unsigned int max_inputs;
unsigned int n_inputs;
unsigned int max_outputs;
unsigned int n_outputs;
SpaProxyPort ports[MAX_PORTS];
};
enum {
PROP_ID_SOCKET,
PROP_ID_LAST,
};
static const SpaPropInfo prop_info[PROP_ID_LAST] =
{
{ PROP_ID_SOCKET, offsetof (SpaProxyProps, socketfd),
"socket", "The Socket factor",
SPA_PROP_FLAG_READWRITE,
SPA_PROP_TYPE_INT, sizeof (int),
SPA_PROP_RANGE_TYPE_NONE, 0, NULL,
NULL },
};
static void
reset_proxy_props (SpaProxyProps *props)
{
props->socketfd = -1;
}
static void
update_poll (SpaProxy *this, int socketfd)
{
SpaEvent event;
SpaProxyProps *p;
p = &this->props[1];
if (p->socketfd != -1) {
event.type = SPA_EVENT_TYPE_REMOVE_POLL;
event.data = &this->poll;
event.size = sizeof (this->poll);
this->event_cb (&this->node, &event, this->user_data);
}
p->socketfd = socketfd;
if (p->socketfd != -1) {
this->fds[0].fd = p->socketfd;
event.type = SPA_EVENT_TYPE_ADD_POLL;
event.data = &this->poll;
event.size = sizeof (this->poll);
this->event_cb (&this->node, &event, this->user_data);
}
}
static SpaResult
update_state (SpaProxy *this, SpaNodeState state)
{
if (this->node.state != state) {
SpaEvent event;
SpaEventStateChange sc;
this->node.state = state;
event.type = SPA_EVENT_TYPE_STATE_CHANGE;
event.data = &sc;
event.size = sizeof (sc);
sc.state = state;
this->event_cb (&this->node, &event, this->user_data);
}
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_get_props (SpaNode *node,
SpaProps **props)
{
SpaProxy *this;
if (node == NULL || node->handle == NULL || props == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
memcpy (&this->props[0], &this->props[1], sizeof (this->props[1]));
*props = &this->props[0].props;
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_set_props (SpaNode *node,
const SpaProps *props)
{
SpaProxy *this;
SpaProxyProps *op, *np;
SpaResult res;
if (node == NULL || node->handle == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
op = &this->props[1];
np = &this->props[0];
if (props == NULL) {
reset_proxy_props (np);
props = &np->props;
}
/* copy new properties */
res = spa_props_copy (props, &np->props);
/* compare changes */
if (op->socketfd != np->socketfd)
update_poll (this, np->socketfd);
/* commit changes */
memcpy (op, np, sizeof (*np));
return res;
}
static SpaResult
spa_proxy_node_send_command (SpaNode *node,
SpaCommand *command)
{
SpaProxy *this;
SpaResult res;
if (node == NULL || node->handle == NULL || command == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
switch (command->type) {
case SPA_COMMAND_INVALID:
return SPA_RESULT_INVALID_COMMAND;
case SPA_COMMAND_START:
{
SpaControlBuilder builder;
SpaControl control;
uint8_t buf[128];
/* send start */
spa_control_builder_init_into (&builder, buf, sizeof (buf), NULL, 0);
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_START, NULL);
spa_control_builder_end (&builder, &control);
if ((res = spa_control_write (&control, this->fds[0].fd)) < 0)
fprintf (stderr, "proxy %p: error writing control %d\n", this, res);
spa_control_clear (&control);
break;
}
case SPA_COMMAND_PAUSE:
{
SpaControlBuilder builder;
SpaControl control;
uint8_t buf[128];
/* send start */
spa_control_builder_init_into (&builder, buf, sizeof (buf), NULL, 0);
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_PAUSE, NULL);
spa_control_builder_end (&builder, &control);
if ((res = spa_control_write (&control, this->fds[0].fd)) < 0)
fprintf (stderr, "proxy %p: error writing control %d\n", this, res);
spa_control_clear (&control);
break;
}
case SPA_COMMAND_FLUSH:
case SPA_COMMAND_DRAIN:
case SPA_COMMAND_MARKER:
return SPA_RESULT_NOT_IMPLEMENTED;
}
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_set_event_callback (SpaNode *node,
SpaEventCallback event,
void *user_data)
{
SpaProxy *this;
if (node == NULL || node->handle == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
this->event_cb = event;
this->user_data = user_data;
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_get_n_ports (SpaNode *node,
unsigned int *n_input_ports,
unsigned int *max_input_ports,
unsigned int *n_output_ports,
unsigned int *max_output_ports)
{
SpaProxy *this;
if (node == NULL || node->handle == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (n_input_ports)
*n_input_ports = this->n_inputs;
if (n_output_ports)
*n_output_ports = this->n_outputs;
if (max_input_ports)
*max_input_ports = this->max_inputs;
if (max_output_ports)
*max_output_ports = this->max_outputs;
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_get_port_ids (SpaNode *node,
unsigned int n_input_ports,
uint32_t *input_ids,
unsigned int n_output_ports,
uint32_t *output_ids)
{
SpaProxy *this;
int c, i;
if (node == NULL || node->handle == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (input_ids) {
for (c = 0, i = 0; i < MAX_INPUTS && c < n_input_ports; i++) {
if (this->ports[i].valid)
input_ids[c++] = i;
}
}
if (output_ids) {
for (c = 0, i = 0; i < MAX_OUTPUTS && c < n_output_ports; i++) {
if (this->ports[MAX_INPUTS + i].valid)
output_ids[c++] = MAX_INPUTS + i;
}
}
return SPA_RESULT_OK;
}
static void
do_update_port (SpaProxy *this,
SpaControlCmdPortUpdate *pu)
{
SpaEvent event;
SpaProxyPort *port;
SpaEventPortAdded pa;
unsigned int i;
port = &this->ports[pu->port_id];
if (pu->change_mask & SPA_CONTROL_CMD_PORT_UPDATE_POSSIBLE_FORMATS) {
port->n_formats = pu->n_possible_formats;
port->formats = pu->possible_formats;
for (i = 0; i < port->n_formats; i++)
spa_debug_format (port->formats[i]);
}
if (pu->change_mask & SPA_CONTROL_CMD_PORT_UPDATE_PROPS) {
}
if (pu->change_mask & SPA_CONTROL_CMD_PORT_UPDATE_INFO) {
port->info = *pu->info;
}
if (!port->valid) {
fprintf (stderr, "proxy %p: adding port %d\n", this, pu->port_id);
port->format = NULL;
port->valid = true;
if (pu->port_id < MAX_INPUTS)
this->n_inputs++;
else
this->n_outputs++;
event.type = SPA_EVENT_TYPE_PORT_ADDED;
event.size = sizeof (pa);
event.data = &pa;
pa.port_id = pu->port_id;
this->event_cb (&this->node, &event, this->user_data);
}
}
static void
do_uninit_port (SpaProxy *this,
uint32_t port_id)
{
SpaEvent event;
SpaProxyPort *port;
SpaEventPortRemoved pr;
fprintf (stderr, "proxy %p: removing port %d\n", this, port_id);
port = &this->ports[port_id];
if (port_id < MAX_INPUTS)
this->n_inputs--;
else
this->n_outputs--;
port->valid = false;
if (port->format)
spa_format_unref (port->format);
port->format = NULL;
event.type = SPA_EVENT_TYPE_PORT_REMOVED;
event.size = sizeof (pr);
event.data = &pr;
pr.port_id = port_id;
this->event_cb (&this->node, &event, this->user_data);
}
static SpaResult
spa_proxy_node_add_port (SpaNode *node,
uint32_t port_id)
{
SpaProxy *this;
SpaControlCmdPortUpdate pu;
if (node == NULL || node->handle == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (!CHECK_FREE_PORT_ID (this, port_id))
return SPA_RESULT_INVALID_PORT;
pu.change_mask = SPA_CONTROL_CMD_PORT_UPDATE_POSSIBLE_FORMATS |
SPA_CONTROL_CMD_PORT_UPDATE_PROPS |
SPA_CONTROL_CMD_PORT_UPDATE_INFO;
pu.port_id = port_id;
pu.n_possible_formats = 0;
pu.possible_formats = NULL;
pu.props = NULL;
pu.info = NULL;
do_update_port (this, &pu);
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_remove_port (SpaNode *node,
uint32_t port_id)
{
SpaProxy *this;
if (node == NULL || node->handle == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (!CHECK_PORT_ID (this, port_id))
return SPA_RESULT_INVALID_PORT;
do_uninit_port (this, port_id);
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_port_enum_formats (SpaNode *node,
uint32_t port_id,
SpaFormat **format,
const SpaFormat *filter,
void **state)
{
SpaProxy *this;
SpaProxyPort *port;
int index;
if (node == NULL || node->handle == NULL || format == NULL || state == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (!CHECK_PORT_ID (this, port_id))
return SPA_RESULT_INVALID_PORT;
port = &this->ports[port_id];
index = (*state == NULL ? 0 : *(int*)state);
if (index >= port->n_formats)
return SPA_RESULT_ENUM_END;
*format = port->formats[index];
*(int*)state = ++index;
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_port_set_format (SpaNode *node,
uint32_t port_id,
SpaPortFormatFlags flags,
const SpaFormat *format)
{
SpaProxy *this;
SpaProxyPort *port;
SpaControl control;
SpaControlBuilder builder;
SpaControlCmdSetFormat sf;
uint8_t buf[128];
SpaResult res;
if (node == NULL || node->handle == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (!CHECK_PORT_ID (this, port_id))
return SPA_RESULT_INVALID_PORT;
port = &this->ports[port_id];
spa_control_builder_init_into (&builder, buf, sizeof (buf), NULL, 0);
sf.port_id = port_id;
sf.format = (SpaFormat *) format;
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_SET_FORMAT, &sf);
spa_control_builder_end (&builder, &control);
if ((res = spa_control_write (&control, this->fds[0].fd)) < 0)
fprintf (stderr, "proxy %p: error writing control\n", this);
spa_control_clear (&control);
if (port->format)
spa_format_unref (port->format);
if (format)
spa_format_ref ((SpaFormat *) format);
port->format = (SpaFormat *)format;
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_port_get_format (SpaNode *node,
uint32_t port_id,
const SpaFormat **format)
{
SpaProxy *this;
SpaProxyPort *port;
if (node == NULL || node->handle == NULL || format == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (!CHECK_PORT_ID (this, port_id))
return SPA_RESULT_INVALID_PORT;
port = &this->ports[port_id];
if (!port->format)
return SPA_RESULT_NO_FORMAT;
*format = port->format;
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_port_get_info (SpaNode *node,
uint32_t port_id,
const SpaPortInfo **info)
{
SpaProxy *this;
SpaProxyPort *port;
if (node == NULL || node->handle == NULL || info == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (!CHECK_PORT_ID (this, port_id))
return SPA_RESULT_INVALID_PORT;
port = &this->ports[port_id];
*info = &port->info;
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_port_get_props (SpaNode *node,
uint32_t port_id,
SpaProps **props)
{
return SPA_RESULT_NOT_IMPLEMENTED;
}
static SpaResult
spa_proxy_node_port_set_props (SpaNode *node,
uint32_t port_id,
const SpaProps *props)
{
return SPA_RESULT_NOT_IMPLEMENTED;
}
static SpaResult
spa_proxy_node_port_get_status (SpaNode *node,
uint32_t port_id,
const SpaPortStatus **status)
{
SpaProxy *this;
SpaProxyPort *port;
if (node == NULL || node->handle == NULL || status == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (!CHECK_PORT_ID (this, port_id))
return SPA_RESULT_INVALID_PORT;
port = &this->ports[port_id];
if (!port->format)
return SPA_RESULT_NO_FORMAT;
*status = &port->status;
return SPA_RESULT_OK;
}
static SpaResult
add_buffer_mem (SpaProxy *this, SpaControlBuilder *builder, uint32_t port_id, SpaBuffer *buffer)
{
SpaControlCmdAddMem am;
int i;
SpaBuffer *b;
SpaMemory *bmem;
if (buffer->mem.mem.id == SPA_ID_INVALID) {
fprintf (stderr, "proxy %p: alloc buffer space %zd\n", this, buffer->mem.size);
bmem = spa_memory_alloc_with_fd (SPA_MEMORY_POOL_SHARED, buffer, buffer->mem.size);
b = spa_memory_ensure_ptr (bmem);
b->mem.mem = bmem->mem;
b->mem.offset = 0;
} else {
bmem = spa_memory_find (&buffer->mem.mem);
b = buffer;
}
am.port_id = port_id;
am.mem = bmem->mem;
am.mem_type = 0;
am.fd_index = spa_control_builder_add_fd (builder, bmem->fd, false);
am.flags = bmem->flags;
am.size = bmem->size;
spa_control_builder_add_cmd (builder, SPA_CONTROL_CMD_ADD_MEM, &am);
for (i = 0; i < b->n_datas; i++) {
SpaData *d = &SPA_BUFFER_DATAS (b)[i];
SpaMemory *mem;
if (!(mem = spa_memory_find (&d->mem.mem))) {
fprintf (stderr, "proxy %p: error invalid memory\n", this);
continue;
}
if (mem->fd == -1) {
fprintf (stderr, "proxy %p: error memory without fd\n", this);
continue;
}
am.port_id = port_id;
am.mem = mem->mem;
am.mem_type = 0;
am.fd_index = spa_control_builder_add_fd (builder, mem->fd, false);
am.flags = mem->flags;
am.size = mem->size;
spa_control_builder_add_cmd (builder, SPA_CONTROL_CMD_ADD_MEM, &am);
}
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_port_use_buffers (SpaNode *node,
uint32_t port_id,
SpaBuffer **buffers,
uint32_t n_buffers)
{
SpaProxy *this;
SpaProxyPort *port;
unsigned int i;
SpaControl control;
SpaControlBuilder builder;
uint8_t buf[4096];
int fds[32];
SpaResult res;
SpaControlCmdUseBuffers ub;
if (node == NULL || node->handle == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
fprintf (stderr, "proxy %p: use buffers %p %u\n", this, buffers, n_buffers);
if (!CHECK_PORT_ID (this, port_id))
return SPA_RESULT_INVALID_PORT;
port = &this->ports[port_id];
if (!port->format)
return SPA_RESULT_NO_FORMAT;
spa_control_builder_init_into (&builder, buf, sizeof (buf), fds, sizeof (fds));
if (buffers == NULL || n_buffers == 0) {
port->buffers = NULL;
port->n_buffers = 0;
} else {
port->buffers = buffers;
port->n_buffers = n_buffers;
}
for (i = 0; i < port->n_buffers; i++)
add_buffer_mem (this, &builder, port_id, port->buffers[i]);
ub.port_id = port_id;
ub.n_buffers = port->n_buffers;
ub.buffers = port->buffers;
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_USE_BUFFERS, &ub);
spa_control_builder_end (&builder, &control);
if ((res = spa_control_write (&control, this->fds[0].fd)) < 0)
fprintf (stderr, "proxy %p: error writing control\n", this);
spa_control_clear (&control);
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_port_alloc_buffers (SpaNode *node,
uint32_t port_id,
SpaAllocParam **params,
uint32_t n_params,
SpaBuffer **buffers,
uint32_t *n_buffers)
{
SpaProxy *this;
SpaProxyPort *port;
if (node == NULL || node->handle == NULL || buffers == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
if (!CHECK_PORT_ID (this, port_id))
return SPA_RESULT_INVALID_PORT;
port = &this->ports[port_id];
if (!port->format)
return SPA_RESULT_NO_FORMAT;
return SPA_RESULT_NOT_IMPLEMENTED;
}
static SpaResult
spa_proxy_node_port_reuse_buffer (SpaNode *node,
uint32_t port_id,
uint32_t buffer_id)
{
return SPA_RESULT_NOT_IMPLEMENTED;
}
static SpaResult
spa_proxy_node_port_push_input (SpaNode *node,
unsigned int n_info,
SpaInputInfo *info)
{
SpaProxy *this;
SpaProxyPort *port;
unsigned int i;
bool have_error = false;
bool have_enough = false;
SpaControl control;
SpaControlBuilder builder;
SpaControlCmdProcessBuffer pb;
uint8_t buf[64];
SpaResult res;
if (node == NULL || node->handle == NULL || n_info == 0 || info == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
spa_control_builder_init_into (&builder, buf, sizeof(buf), NULL, 0);
for (i = 0; i < n_info; i++) {
if (!CHECK_PORT_ID_IN (this, info[i].port_id)) {
printf ("invalid port %d\n", info[i].port_id);
info[i].status = SPA_RESULT_INVALID_PORT;
have_error = true;
continue;
}
port = &this->ports[info[i].port_id];
if (!port->format) {
info[i].status = SPA_RESULT_NO_FORMAT;
have_error = true;
continue;
}
if (info[i].buffer_id >= port->n_buffers) {
if (port->n_buffers == 0)
info[i].status = SPA_RESULT_NO_BUFFERS;
else
info[i].status = SPA_RESULT_INVALID_BUFFER_ID;
have_error = true;
continue;
}
pb.port_id = info[i].port_id;
pb.buffer_id = info[i].buffer_id;
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_PROCESS_BUFFER, &pb);
info[i].status = SPA_RESULT_OK;
}
spa_control_builder_end (&builder, &control);
if (have_error)
return SPA_RESULT_ERROR;
if (have_enough)
return SPA_RESULT_HAVE_ENOUGH_INPUT;
if ((res = spa_control_write (&control, this->fds[0].fd)) < 0)
fprintf (stderr, "proxy %p: error writing control\n", this);
spa_control_clear (&control);
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_port_pull_output (SpaNode *node,
unsigned int n_info,
SpaOutputInfo *info)
{
SpaProxy *this;
SpaProxyPort *port;
unsigned int i;
bool have_error = false;
bool need_more = false;
if (node == NULL || node->handle == NULL || n_info == 0 || info == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
for (i = 0; i < n_info; i++) {
if (!CHECK_PORT_ID_OUT (this, info[i].port_id)) {
info[i].status = SPA_RESULT_INVALID_PORT;
have_error = true;
continue;
}
port = &this->ports[info[i].port_id];
if (!port->format) {
info[i].status = SPA_RESULT_NO_FORMAT;
have_error = true;
continue;
}
info[i].buffer_id = port->buffer_id;
info[i].status = SPA_RESULT_OK;
}
if (have_error)
return SPA_RESULT_ERROR;
if (need_more)
return SPA_RESULT_NEED_MORE_INPUT;
return SPA_RESULT_OK;
}
static SpaResult
spa_proxy_node_port_push_event (SpaNode *node,
uint32_t port_id,
SpaEvent *event)
{
SpaProxy *this;
SpaResult res;
if (node == NULL || node->handle == NULL || event == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
switch (event->type) {
case SPA_EVENT_TYPE_REUSE_BUFFER:
{
SpaEventReuseBuffer *rb = event->data;
SpaControlCmdReuseBuffer crb;
SpaControlBuilder builder;
SpaControl control;
uint8_t buf[128];
/* send start */
spa_control_builder_init_into (&builder, buf, sizeof (buf), NULL, 0);
crb.port_id = rb->port_id;
crb.buffer_id = rb->buffer_id;
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_REUSE_BUFFER, &crb);
spa_control_builder_end (&builder, &control);
if ((res = spa_control_write (&control, this->fds[0].fd)) < 0)
fprintf (stderr, "proxy %p: error writing control %d\n", this, res);
spa_control_clear (&control);
return SPA_RESULT_OK;
}
default:
break;
}
return SPA_RESULT_NOT_IMPLEMENTED;
}
static SpaResult
parse_control (SpaProxy *this,
SpaControl *ctrl)
{
SpaControlIter it;
spa_control_iter_init (&it, ctrl);
while (spa_control_iter_next (&it) == SPA_RESULT_OK) {
SpaControlCmd cmd = spa_control_iter_get_cmd (&it);
switch (cmd) {
case SPA_CONTROL_CMD_ADD_PORT:
case SPA_CONTROL_CMD_REMOVE_PORT:
case SPA_CONTROL_CMD_SET_FORMAT:
case SPA_CONTROL_CMD_SET_PROPERTY:
case SPA_CONTROL_CMD_START:
case SPA_CONTROL_CMD_PAUSE:
fprintf (stderr, "proxy %p: got unexpected control %d\n", this, cmd);
break;
case SPA_CONTROL_CMD_PORT_REMOVED:
fprintf (stderr, "proxy %p: command not implemented %d\n", this, cmd);
break;
case SPA_CONTROL_CMD_NODE_UPDATE:
{
SpaControlCmdNodeUpdate nu;
if (spa_control_iter_parse_cmd (&it, &nu) < 0)
break;
this->max_inputs = nu.max_input_ports;
this->max_outputs = nu.max_output_ports;
fprintf (stderr, "proxy %p: got node update %d, %u, %u\n", this, cmd,
this->max_inputs, this->max_outputs);
break;
}
case SPA_CONTROL_CMD_PORT_UPDATE:
{
SpaControlCmdPortUpdate pu;
bool remove;
fprintf (stderr, "proxy %p: got port update %d\n", this, cmd);
if (spa_control_iter_parse_cmd (&it, &pu) < 0)
break;
if (pu.port_id >= MAX_PORTS)
break;
remove = (pu.change_mask == 0);
if (remove) {
do_uninit_port (this, pu.port_id);
} else {
do_update_port (this, &pu);
}
break;
}
case SPA_CONTROL_CMD_STATE_CHANGE:
{
SpaControlCmdStateChange sc;
if (spa_control_iter_parse_cmd (&it, &sc) < 0)
break;
fprintf (stderr, "proxy %p: got state-change to %d\n", this, sc.state);
update_state (this, sc.state);
break;
}
case SPA_CONTROL_CMD_PORT_STATUS_CHANGE:
{
fprintf (stderr, "proxy %p: command not implemented %d\n", this, cmd);
break;
}
case SPA_CONTROL_CMD_NEED_INPUT:
{
break;
}
case SPA_CONTROL_CMD_HAVE_OUTPUT:
{
SpaEvent event;
SpaEventHaveOutput hu;
SpaControlCmdHaveOutput cmd;
if (spa_control_iter_parse_cmd (&it, &cmd) < 0)
break;
event.type = SPA_EVENT_TYPE_HAVE_OUTPUT;
event.data = &hu;
event.size = sizeof (hu);
hu.port_id = cmd.port_id;
this->event_cb (&this->node, &event, this->user_data);
break;
}
case SPA_CONTROL_CMD_ADD_MEM:
break;
case SPA_CONTROL_CMD_REMOVE_MEM:
break;
case SPA_CONTROL_CMD_USE_BUFFERS:
break;
case SPA_CONTROL_CMD_PROCESS_BUFFER:
{
SpaControlCmdProcessBuffer cmd;
SpaProxyPort *port;
if (spa_control_iter_parse_cmd (&it, &cmd) < 0)
break;
port = &this->ports[cmd.port_id];
port->buffer_id = cmd.buffer_id;
break;
}
case SPA_CONTROL_CMD_REUSE_BUFFER:
{
SpaEvent event;
SpaEventReuseBuffer rb;
SpaControlCmdReuseBuffer crb;
if (spa_control_iter_parse_cmd (&it, &crb) < 0)
break;
event.type = SPA_EVENT_TYPE_REUSE_BUFFER;
event.data = &rb;
event.size = sizeof (rb);
rb.port_id = crb.port_id;
rb.buffer_id = crb.buffer_id;
this->event_cb (&this->node, &event, this->user_data);
break;
}
default:
fprintf (stderr, "proxy %p: command unhandled %d\n", this, cmd);
break;
}
}
spa_control_iter_end (&it);
return SPA_RESULT_OK;
}
static int
proxy_on_fd_events (SpaPollNotifyData *data)
{
SpaProxy *this = data->user_data;
SpaResult res;
if (data->fds[0].revents & POLLIN) {
SpaControl control;
uint8_t buf[1024];
int fds[16];
if ((res = spa_control_read (&control, data->fds[0].fd, buf, 1024, fds, 16)) < 0) {
fprintf (stderr, "proxy %p: failed to read control: %d\n", this, res);
return 0;
}
parse_control (this, &control);
spa_control_clear (&control);
}
return 0;
}
static const SpaNode proxy_node = {
NULL,
sizeof (SpaNode),
SPA_NODE_STATE_INIT,
spa_proxy_node_get_props,
spa_proxy_node_set_props,
spa_proxy_node_send_command,
spa_proxy_node_set_event_callback,
spa_proxy_node_get_n_ports,
spa_proxy_node_get_port_ids,
spa_proxy_node_add_port,
spa_proxy_node_remove_port,
spa_proxy_node_port_enum_formats,
spa_proxy_node_port_set_format,
spa_proxy_node_port_get_format,
spa_proxy_node_port_get_info,
spa_proxy_node_port_get_props,
spa_proxy_node_port_set_props,
spa_proxy_node_port_use_buffers,
spa_proxy_node_port_alloc_buffers,
spa_proxy_node_port_reuse_buffer,
spa_proxy_node_port_get_status,
spa_proxy_node_port_push_input,
spa_proxy_node_port_pull_output,
spa_proxy_node_port_push_event,
};
static SpaResult
spa_proxy_get_interface (SpaHandle *handle,
uint32_t interface_id,
void **interface)
{
SpaProxy *this = (SpaProxy *) handle;
if (handle == NULL || interface == 0)
return SPA_RESULT_INVALID_ARGUMENTS;
switch (interface_id) {
case SPA_INTERFACE_ID_NODE:
*interface = &this->node;
break;
default:
return SPA_RESULT_UNKNOWN_INTERFACE;
}
return SPA_RESULT_OK;
}
static SpaResult
proxy_clear (SpaHandle *handle)
{
return SPA_RESULT_OK;
}
static SpaResult
proxy_init (const SpaHandleFactory *factory,
SpaHandle *handle)
{
SpaProxy *this;
if (factory == NULL || handle == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
handle->get_interface = spa_proxy_get_interface;
handle->clear = proxy_clear;
this = (SpaProxy *) handle;
this->node = proxy_node;
this->node.handle = handle;
this->props[1].props.n_prop_info = PROP_ID_LAST;
this->props[1].props.prop_info = prop_info;
reset_proxy_props (&this->props[1]);
memcpy (&this->props[0], &this->props[1], sizeof (this->props[1]));
this->fds[0].fd = -1;
this->fds[0].events = POLLIN | POLLPRI | POLLERR;
this->fds[0].revents = 0;
this->poll.id = 0;
this->poll.enabled = true;
this->poll.fds = this->fds;
this->poll.n_fds = 1;
this->poll.idle_cb = NULL;
this->poll.before_cb = NULL;
this->poll.after_cb = proxy_on_fd_events;
this->poll.user_data = this;
return SPA_RESULT_OK;
}
static const SpaInterfaceInfo proxy_interfaces[] =
{
{ SPA_INTERFACE_ID_NODE,
SPA_INTERFACE_ID_NODE_NAME,
SPA_INTERFACE_ID_NODE_DESCRIPTION,
},
};
static SpaResult
proxy_enum_interface_info (const SpaHandleFactory *factory,
const SpaInterfaceInfo **info,
void **state)
{
int index;
if (factory == NULL || info == NULL || state == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
index = (*state == NULL ? 0 : *(int*)state);
switch (index) {
case 0:
*info = &proxy_interfaces[index];
break;
default:
return SPA_RESULT_ENUM_END;
}
*(int*)state = ++index;
return SPA_RESULT_OK;
}
const SpaHandleFactory spa_proxy_factory =
{ "proxy",
NULL,
sizeof (SpaProxy),
proxy_init,
proxy_enum_interface_info,
};
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