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pipewire/spa/plugins/remote/proxy.c
Wim Taymans 24108e01c1 mem: remove memory stuff 
Remove the memory stuff from the spa API, we can do thing more simple
and efficiently if we always allocate buffers outside of the plugins and
only implement an alloc function on the node when it can do something
clever.
Move serialize code to the props/format/buffer code
Make it possible to copy a format and properties.
2016-09-29 18:18:59 +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/node.h>
#include <spa/queue.h>
#include <spa/queue.h>
#include "../lib/memfd-wrappers.h"
#define MAX_INPUTS 64
#define MAX_OUTPUTS 64
#define MAX_PORTS (MAX_INPUTS + MAX_OUTPUTS)
#define MAX_BUFFERS 16
#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 _ProxyBuffer ProxyBuffer;
struct _ProxyBuffer {
SpaBuffer *outbuf;
SpaBuffer buffer;
SpaData datas[4];
off_t offset;
size_t size;
};
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;
ProxyBuffer buffers[MAX_BUFFERS];
uint32_t buffer_mem_id;
int buffer_mem_fd;
size_t buffer_mem_size;
void *buffer_mem_ptr;
uint32_t buffer_id;
SpaQueue ready;
} SpaProxyPort;
struct _SpaProxy {
SpaHandle handle;
SpaNode node;
SpaProxyProps props[2];
SpaNodeEventCallback 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];
uint32_t seq;
};
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 SpaResult
update_poll (SpaProxy *this, int socketfd)
{
SpaNodeEvent event;
SpaProxyProps *p;
SpaResult res = SPA_RESULT_OK;
p = &this->props[1];
if (p->socketfd != -1) {
event.type = SPA_NODE_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_NODE_EVENT_TYPE_ADD_POLL;
event.data = &this->poll;
event.size = sizeof (this->poll);
this->event_cb (&this->node, &event, this->user_data);
}
return res;
}
static void
send_async_complete (SpaProxy *this, uint32_t seq, SpaResult res)
{
SpaNodeEvent event;
SpaNodeEventAsyncComplete ac;
event.type = SPA_NODE_EVENT_TYPE_ASYNC_COMPLETE;
event.data = &ac;
event.size = sizeof (ac);
ac.seq = seq;
ac.res = res;
this->event_cb (&this->node, &event, this->user_data);
}
static SpaResult
clear_buffers (SpaProxy *this, SpaProxyPort *port)
{
if (port->n_buffers) {
fprintf (stderr, "proxy %p: clear buffers\n", this);
port->n_buffers = 0;
SPA_QUEUE_INIT (&port->ready);
}
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_values (props, &np->props);
/* compare changes */
if (op->socketfd != np->socketfd)
res = update_poll (this, np->socketfd);
/* commit changes */
memcpy (op, np, sizeof (*np));
return res;
}
static SpaResult
spa_proxy_node_send_command (SpaNode *node,
SpaNodeCommand *command)
{
SpaProxy *this;
SpaResult res = SPA_RESULT_OK;
if (node == NULL || node->handle == NULL || command == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
this = (SpaProxy *) node->handle;
switch (command->type) {
case SPA_NODE_COMMAND_INVALID:
return SPA_RESULT_INVALID_COMMAND;
case SPA_NODE_COMMAND_START:
case SPA_NODE_COMMAND_PAUSE:
case SPA_NODE_COMMAND_FLUSH:
case SPA_NODE_COMMAND_DRAIN:
case SPA_NODE_COMMAND_MARKER:
{
SpaControlBuilder builder;
SpaControl control;
uint8_t buf[128];
SpaControlCmdNodeCommand cnc;
/* send start */
spa_control_builder_init_into (&builder, buf, sizeof (buf), NULL, 0);
cnc.seq = this->seq++;
cnc.command = command;
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_NODE_COMMAND, &cnc);
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);
res = SPA_RESULT_RETURN_ASYNC (cnc.seq);
break;
}
case SPA_NODE_COMMAND_CLOCK_UPDATE:
{
SpaControlBuilder builder;
SpaControl control;
uint8_t buf[128];
SpaControlCmdNodeCommand cnc;
/* send start */
spa_control_builder_init_into (&builder, buf, sizeof (buf), NULL, 0);
cnc.command = command;
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_NODE_COMMAND, &cnc);
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;
}
}
return res;
}
static SpaResult
spa_proxy_node_set_event_callback (SpaNode *node,
SpaNodeEventCallback 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)
{
SpaProxyPort *port;
unsigned int i;
size_t size;
port = &this->ports[pu->port_id];
if (pu->change_mask & SPA_CONTROL_CMD_PORT_UPDATE_POSSIBLE_FORMATS) {
for (i = 0; i < port->n_formats; i++)
free (port->formats[i]);
port->n_formats = pu->n_possible_formats;
port->formats = realloc (port->formats, port->n_formats * sizeof (SpaFormat *));
for (i = 0; i < port->n_formats; i++) {
size = spa_format_get_size (pu->possible_formats[i]);
port->formats[i] = spa_format_copy_into (malloc (size), pu->possible_formats[i]);
spa_debug_format (port->formats[i]);
}
}
if (pu->change_mask & SPA_CONTROL_CMD_PORT_UPDATE_FORMAT) {
if (port->format)
free (port->format);
size = spa_format_get_size (pu->format);
port->format = spa_format_copy_into (malloc (size), pu->format);
}
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++;
}
}
static void
do_uninit_port (SpaProxy *this,
uint32_t port_id)
{
SpaProxyPort *port;
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)
free (port->format);
port->format = NULL;
}
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_FORMAT |
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.format = 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;
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;
spa_control_builder_init_into (&builder, buf, sizeof (buf), NULL, 0);
sf.seq = this->seq++;
sf.flags = flags;
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);
return SPA_RESULT_RETURN_ASYNC (sf.seq);
}
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
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, j;
SpaControl control;
SpaControlBuilder builder;
uint8_t buf[4096];
int fds[32];
SpaResult res;
SpaControlCmdAddMem am;
SpaControlCmdUseBuffers ub;
size_t size, n_mem;
SpaControlMemRef *memref;
void *p;
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;
clear_buffers (this, port);
spa_control_builder_init_into (&builder, buf, sizeof (buf), fds, SPA_N_ELEMENTS (fds));
/* find size to store buffers */
size = 0;
n_mem = 0;
for (i = 0; i < n_buffers; i++) {
ProxyBuffer *b = &port->buffers[i];
b->outbuf = buffers[i];
memcpy (&b->buffer, buffers[i], sizeof (SpaBuffer));
b->buffer.datas = b->datas;
b->size = spa_buffer_get_size (buffers[i]);
b->offset = size;
size += b->size;
for (j = 0; j < buffers[i]->n_datas; j++) {
SpaData *d = &buffers[i]->datas[j];
memcpy (&b->buffer.datas[j], d, sizeof (SpaData));
am.port_id = port_id;
am.mem_id = n_mem;
am.fd_index = spa_control_builder_add_fd (&builder, SPA_PTR_TO_INT (d->data), false);
am.flags = 0;
am.offset = d->offset;
am.size = d->size;
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_ADD_MEM, &am);
b->buffer.datas[j].data = SPA_UINT32_TO_PTR (n_mem);
n_mem++;
}
}
/* make mem for the buffers */
port->buffer_mem_id = n_mem;
port->buffer_mem_size = size;
port->buffer_mem_fd = memfd_create ("spa-memfd", MFD_CLOEXEC | MFD_ALLOW_SEALING);
if (ftruncate (port->buffer_mem_fd, size) < 0) {
fprintf (stderr, "Failed to truncate temporary file: %s\n", strerror (errno));
close (port->buffer_mem_fd);
}
{
unsigned int seals = F_SEAL_GROW | F_SEAL_SHRINK | F_SEAL_SEAL;
if (fcntl (port->buffer_mem_fd, F_ADD_SEALS, seals) == -1) {
fprintf (stderr, "Failed to add seals: %s\n", strerror (errno));
close (port->buffer_mem_fd);
}
}
p = port->buffer_mem_ptr = mmap (NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, port->buffer_mem_fd, 0);
for (i = 0; i < n_buffers; i++)
p += spa_buffer_serialize (p, &port->buffers[i].buffer);
am.port_id = port_id;
am.mem_id = port->buffer_mem_id;
am.fd_index = spa_control_builder_add_fd (&builder, port->buffer_mem_fd, false);
am.flags = 0;
am.offset = 0;
am.size = size;
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_ADD_MEM, &am);
memref = alloca (n_mem * sizeof (SpaControlMemRef));
for (i = 0; i < n_buffers; i++) {
memref[i].mem_id = port->buffer_mem_id;
memref[i].offset = port->buffers[i].offset;
memref[i].size = port->buffers[i].size;
}
port->n_buffers = n_buffers;
ub.seq = this->seq++;
ub.port_id = port_id;
ub.n_buffers = port->n_buffers;
ub.buffers = memref;
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_RETURN_ASYNC (ub.seq);
}
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)
{
SpaProxy *this;
SpaControlBuilder builder;
SpaControl control;
uint8_t buf[128];
SpaResult res;
SpaControlCmdNodeEvent cne;
SpaNodeEvent ne;
SpaNodeEventReuseBuffer rb;
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;
/* send start */
spa_control_builder_init_into (&builder, buf, sizeof (buf), NULL, 0);
cne.event = &ne;
ne.type = SPA_NODE_EVENT_TYPE_REUSE_BUFFER;
ne.data = &rb;
ne.size = sizeof (rb);
rb.port_id = port_id;
rb.buffer_id = buffer_id;
spa_control_builder_add_cmd (&builder, SPA_CONTROL_CMD_NODE_EVENT, &cne);
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 res;
}
static SpaResult
spa_proxy_node_port_push_input (SpaNode *node,
unsigned int n_info,
SpaPortInputInfo *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,
SpaPortOutputInfo *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)) {
fprintf (stderr, "invalid port %u\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;
}
info[i].buffer_id = port->buffer_id;
info[i].status = SPA_RESULT_OK;
port->buffer_id = SPA_ID_INVALID;
}
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,
SpaNodeEvent *event)
{
if (node == NULL || node->handle == NULL || event == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
switch (event->type) {
default:
fprintf (stderr, "unhandled event %d\n", event->type);
break;
}
return SPA_RESULT_NOT_IMPLEMENTED;
}
static SpaResult
handle_node_event (SpaProxy *this,
SpaNodeEvent *event)
{
switch (event->type) {
case SPA_NODE_EVENT_TYPE_INVALID:
break;
case SPA_NODE_EVENT_TYPE_ASYNC_COMPLETE:
case SPA_NODE_EVENT_TYPE_HAVE_OUTPUT:
case SPA_NODE_EVENT_TYPE_NEED_INPUT:
case SPA_NODE_EVENT_TYPE_REUSE_BUFFER:
case SPA_NODE_EVENT_TYPE_ADD_POLL:
case SPA_NODE_EVENT_TYPE_UPDATE_POLL:
case SPA_NODE_EVENT_TYPE_REMOVE_POLL:
case SPA_NODE_EVENT_TYPE_DRAINED:
case SPA_NODE_EVENT_TYPE_MARKER:
case SPA_NODE_EVENT_TYPE_ERROR:
case SPA_NODE_EVENT_TYPE_BUFFERING:
case SPA_NODE_EVENT_TYPE_REQUEST_REFRESH:
case SPA_NODE_EVENT_TYPE_REQUEST_CLOCK_UPDATE:
this->event_cb (&this->node, event, this->user_data);
break;
}
return SPA_RESULT_OK;
}
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_INVALID:
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_NODE_COMMAND:
fprintf (stderr, "proxy %p: got unexpected control %d\n", this, cmd);
break;
case SPA_CONTROL_CMD_NODE_UPDATE:
{
SpaControlCmdNodeUpdate nu;
if (spa_control_iter_parse_cmd (&it, &nu) < 0)
break;
if (nu.change_mask & SPA_CONTROL_CMD_NODE_UPDATE_MAX_INPUTS)
this->max_inputs = nu.max_input_ports;
if (nu.change_mask & SPA_CONTROL_CMD_NODE_UPDATE_MAX_OUTPUTS)
this->max_outputs = nu.max_output_ports;
fprintf (stderr, "proxy %p: got node update %d, max_in %u, max_out %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_PORT_STATUS_CHANGE:
{
fprintf (stderr, "proxy %p: command not implemented %d\n", this, cmd);
break;
}
case SPA_CONTROL_CMD_NODE_STATE_CHANGE:
{
SpaControlCmdNodeStateChange sc;
SpaNodeState old = this->node.state;
if (spa_control_iter_parse_cmd (&it, &sc) < 0)
break;
fprintf (stderr, "proxy %p: got node state change %d -> %d\n", this, old, sc.state);
this->node.state = sc.state;
if (old == SPA_NODE_STATE_INIT)
send_async_complete (this, 0, SPA_RESULT_OK);
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];
if (port->buffer_id != SPA_ID_INVALID)
fprintf (stderr, "proxy %p: unprocessed buffer: %d\n", this, port->buffer_id);
port->buffer_id = cmd.buffer_id;
break;
}
case SPA_CONTROL_CMD_NODE_EVENT:
{
SpaControlCmdNodeEvent cne;
if (spa_control_iter_parse_cmd (&it, &cne) < 0)
break;
handle_node_event (this, cne.event);
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),
NULL,
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,
const SpaDict *info)
{
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_RETURN_ASYNC (this->seq++);
}
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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