mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-10-31 22:25:38 -04:00
5b0b9c43d0
Only send a buffer when we have received a NEED_DATA message. Add a signal to pulla buffer from the sink. Restructure the sink to use a queue like the source and only push a buffer when we can. Improve SpaData. Offset and size should be between 0 and maxsize, make sure we clamp correctly when needed. node_process_output completes the processing of the output after receiving HAVE_OUTPUT for async elements. It instructs the node that it now can produce more output.
752 lines
19 KiB
C
752 lines
19 KiB
C
/* 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 <spa/log.h>
|
|
#include <spa/id-map.h>
|
|
#include <spa/node.h>
|
|
#include <spa/audio/format.h>
|
|
#include <lib/props.h>
|
|
|
|
typedef struct _SpaVolume SpaVolume;
|
|
|
|
typedef struct {
|
|
SpaProps props;
|
|
double volume;
|
|
bool mute;
|
|
} SpaVolumeProps;
|
|
|
|
typedef struct {
|
|
bool have_format;
|
|
SpaPortInfo info;
|
|
SpaBuffer **buffers;
|
|
unsigned int n_buffers;
|
|
SpaBuffer *buffer;
|
|
void *io;
|
|
} SpaVolumePort;
|
|
|
|
typedef struct {
|
|
uint32_t node;
|
|
} URI;
|
|
|
|
struct _SpaVolume {
|
|
SpaHandle handle;
|
|
SpaNode node;
|
|
|
|
URI uri;
|
|
SpaIDMap *map;
|
|
SpaLog *log;
|
|
|
|
SpaVolumeProps props[2];
|
|
|
|
SpaNodeEventCallback event_cb;
|
|
void *user_data;
|
|
|
|
bool have_format;
|
|
SpaFormatAudio query_format;
|
|
SpaFormatAudio current_format;
|
|
|
|
SpaVolumePort in_ports[1];
|
|
SpaVolumePort out_ports[1];
|
|
};
|
|
|
|
#define CHECK_IN_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) == 0)
|
|
#define CHECK_OUT_PORT(this,d,p) ((d) == SPA_DIRECTION_OUTPUT && (p) == 0)
|
|
#define CHECK_PORT(this,d,p) ((p) == 0)
|
|
|
|
static const double default_volume = 1.0;
|
|
static const double min_volume = 0.0;
|
|
static const double max_volume = 10.0;
|
|
static const bool default_mute = false;
|
|
|
|
static const SpaPropRangeInfo volume_range[] = {
|
|
{ "min", { sizeof (double), &min_volume } },
|
|
{ "max", { sizeof (double), &max_volume } },
|
|
};
|
|
|
|
enum {
|
|
PROP_ID_VOLUME,
|
|
PROP_ID_MUTE,
|
|
PROP_ID_LAST,
|
|
};
|
|
|
|
static const SpaPropInfo prop_info[] =
|
|
{
|
|
{ PROP_ID_VOLUME, offsetof (SpaVolumeProps, volume),
|
|
"volume",
|
|
SPA_PROP_FLAG_READWRITE,
|
|
SPA_PROP_TYPE_DOUBLE, sizeof (double),
|
|
SPA_PROP_RANGE_TYPE_MIN_MAX, 2, volume_range,
|
|
NULL },
|
|
{ PROP_ID_MUTE, offsetof (SpaVolumeProps, mute),
|
|
"mute",
|
|
SPA_PROP_FLAG_READWRITE,
|
|
SPA_PROP_TYPE_BOOL, sizeof (bool),
|
|
SPA_PROP_RANGE_TYPE_NONE, 0, NULL,
|
|
NULL },
|
|
};
|
|
|
|
static void
|
|
reset_volume_props (SpaVolumeProps *props)
|
|
{
|
|
props->volume = default_volume;
|
|
props->mute = default_mute;
|
|
}
|
|
|
|
static void
|
|
update_state (SpaVolume *this, SpaNodeState state)
|
|
{
|
|
this->node.state = state;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_get_props (SpaNode *node,
|
|
SpaProps **props)
|
|
{
|
|
SpaVolume *this;
|
|
|
|
if (node == NULL || props == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
memcpy (&this->props[0], &this->props[1], sizeof (this->props[1]));
|
|
*props = &this->props[0].props;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_set_props (SpaNode *node,
|
|
const SpaProps *props)
|
|
{
|
|
SpaVolume *this;
|
|
SpaVolumeProps *p;
|
|
SpaResult res;
|
|
|
|
if (node == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
p = &this->props[1];
|
|
|
|
if (props == NULL) {
|
|
reset_volume_props (p);
|
|
return SPA_RESULT_OK;
|
|
}
|
|
res = spa_props_copy_values (props, &p->props);
|
|
|
|
return res;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_send_command (SpaNode *node,
|
|
SpaNodeCommand *command)
|
|
{
|
|
SpaVolume *this;
|
|
|
|
if (node == NULL || command == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
switch (command->type) {
|
|
case SPA_NODE_COMMAND_INVALID:
|
|
return SPA_RESULT_INVALID_COMMAND;
|
|
|
|
case SPA_NODE_COMMAND_START:
|
|
update_state (this, SPA_NODE_STATE_STREAMING);
|
|
break;
|
|
|
|
case SPA_NODE_COMMAND_PAUSE:
|
|
update_state (this, SPA_NODE_STATE_PAUSED);
|
|
break;
|
|
|
|
case SPA_NODE_COMMAND_FLUSH:
|
|
case SPA_NODE_COMMAND_DRAIN:
|
|
case SPA_NODE_COMMAND_MARKER:
|
|
case SPA_NODE_COMMAND_CLOCK_UPDATE:
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_set_event_callback (SpaNode *node,
|
|
SpaNodeEventCallback event,
|
|
void *user_data)
|
|
{
|
|
SpaVolume *this;
|
|
|
|
if (node == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
this->event_cb = event;
|
|
this->user_data = user_data;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_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)
|
|
{
|
|
if (node == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
if (n_input_ports)
|
|
*n_input_ports = 1;
|
|
if (max_input_ports)
|
|
*max_input_ports = 1;
|
|
if (n_output_ports)
|
|
*n_output_ports = 1;
|
|
if (max_output_ports)
|
|
*max_output_ports = 1;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_get_port_ids (SpaNode *node,
|
|
unsigned int n_input_ports,
|
|
uint32_t *input_ids,
|
|
unsigned int n_output_ports,
|
|
uint32_t *output_ids)
|
|
{
|
|
if (node == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
if (n_input_ports > 0 && input_ids)
|
|
input_ids[0] = 0;
|
|
if (n_output_ports > 0 && output_ids)
|
|
output_ids[0] = 0;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
|
|
static SpaResult
|
|
spa_volume_node_add_port (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id)
|
|
{
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_remove_port (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id)
|
|
{
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_enum_formats (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id,
|
|
SpaFormat **format,
|
|
const SpaFormat *filter,
|
|
void **state)
|
|
{
|
|
SpaVolume *this;
|
|
int index;
|
|
|
|
if (node == NULL || format == NULL || state == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
if (!CHECK_PORT (this, direction, port_id))
|
|
return SPA_RESULT_INVALID_PORT;
|
|
|
|
index = (*state == NULL ? 0 : *(int*)state);
|
|
|
|
switch (index) {
|
|
case 0:
|
|
spa_format_audio_init (SPA_MEDIA_TYPE_AUDIO,
|
|
SPA_MEDIA_SUBTYPE_RAW,
|
|
&this->query_format);
|
|
break;
|
|
default:
|
|
return SPA_RESULT_ENUM_END;
|
|
}
|
|
*format = &this->query_format.format;
|
|
*(int*)state = ++index;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_set_format (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id,
|
|
SpaPortFormatFlags flags,
|
|
const SpaFormat *format)
|
|
{
|
|
SpaVolume *this;
|
|
SpaVolumePort *port;
|
|
SpaResult res;
|
|
|
|
if (node == NULL || format == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
if (!CHECK_PORT (this, direction, port_id))
|
|
return SPA_RESULT_INVALID_PORT;
|
|
|
|
port = direction == SPA_DIRECTION_INPUT ? &this->in_ports[port_id] : &this->out_ports[port_id];
|
|
|
|
if (format == NULL) {
|
|
port->have_format = false;
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
if ((res = spa_format_audio_parse (format, &this->current_format)) < 0)
|
|
return res;
|
|
|
|
port->have_format = true;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_get_format (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id,
|
|
const SpaFormat **format)
|
|
{
|
|
SpaVolume *this;
|
|
SpaVolumePort *port;
|
|
|
|
if (node == NULL || format == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
if (!CHECK_PORT (this, direction, port_id))
|
|
return SPA_RESULT_INVALID_PORT;
|
|
|
|
port = direction == SPA_DIRECTION_INPUT ? &this->in_ports[port_id] : &this->out_ports[port_id];
|
|
|
|
if (!port->have_format)
|
|
return SPA_RESULT_NO_FORMAT;
|
|
|
|
*format = &this->current_format.format;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_get_info (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id,
|
|
const SpaPortInfo **info)
|
|
{
|
|
SpaVolume *this;
|
|
SpaVolumePort *port;
|
|
|
|
if (node == NULL || info == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
if (!CHECK_PORT (this, direction, port_id))
|
|
return SPA_RESULT_INVALID_PORT;
|
|
|
|
port = direction == SPA_DIRECTION_INPUT ? &this->in_ports[port_id] : &this->out_ports[port_id];
|
|
*info = &port->info;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_get_props (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id,
|
|
SpaProps **props)
|
|
{
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_set_props (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id,
|
|
const SpaProps *props)
|
|
{
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_use_buffers (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id,
|
|
SpaBuffer **buffers,
|
|
uint32_t n_buffers)
|
|
{
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_alloc_buffers (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id,
|
|
SpaAllocParam **params,
|
|
uint32_t n_params,
|
|
SpaBuffer **buffers,
|
|
uint32_t *n_buffers)
|
|
{
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_set_input (SpaNode *node,
|
|
uint32_t port_id,
|
|
SpaPortInput *input)
|
|
{
|
|
SpaVolume *this;
|
|
|
|
if (node == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
if (!CHECK_PORT (this, SPA_DIRECTION_INPUT, port_id))
|
|
return SPA_RESULT_INVALID_PORT;
|
|
|
|
this->in_ports[port_id].io = input;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_set_output (SpaNode *node,
|
|
uint32_t port_id,
|
|
SpaPortOutput *output)
|
|
{
|
|
SpaVolume *this;
|
|
|
|
if (node == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
if (!CHECK_PORT (this, SPA_DIRECTION_OUTPUT, port_id))
|
|
return SPA_RESULT_INVALID_PORT;
|
|
|
|
this->in_ports[port_id].io = output;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_reuse_buffer (SpaNode *node,
|
|
uint32_t port_id,
|
|
uint32_t buffer_id)
|
|
{
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_port_send_command (SpaNode *node,
|
|
SpaDirection direction,
|
|
uint32_t port_id,
|
|
SpaNodeCommand *command)
|
|
{
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_process_input (SpaNode *node)
|
|
{
|
|
SpaVolume *this;
|
|
SpaPortInput *input;
|
|
SpaPortOutput *output;
|
|
SpaVolumePort *port;
|
|
|
|
if (node == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
port = &this->in_ports[0];
|
|
|
|
if ((input = port->io) == NULL)
|
|
return SPA_RESULT_ERROR;
|
|
if ((output = this->out_ports[0].io) == NULL)
|
|
return SPA_RESULT_ERROR;
|
|
|
|
if (input->buffer_id >= port->n_buffers) {
|
|
input->status = SPA_RESULT_INVALID_BUFFER_ID;
|
|
return SPA_RESULT_ERROR;
|
|
}
|
|
if (!port->have_format) {
|
|
input->status = SPA_RESULT_NO_FORMAT;
|
|
return SPA_RESULT_ERROR;
|
|
}
|
|
port->buffer = port->buffers[input->buffer_id];
|
|
|
|
input->status = SPA_RESULT_HAVE_ENOUGH_INPUT;
|
|
input->flags &= ~SPA_PORT_STATUS_FLAG_NEED_INPUT;
|
|
output->flags |= SPA_PORT_STATUS_FLAG_HAVE_OUTPUT;
|
|
|
|
return SPA_RESULT_HAVE_ENOUGH_INPUT;
|
|
}
|
|
|
|
static SpaBuffer *
|
|
find_free_buffer (SpaVolume *this, SpaVolumePort *port)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
release_buffer (SpaVolume *this, SpaBuffer *buffer)
|
|
{
|
|
SpaNodeEventReuseBuffer rb;
|
|
|
|
rb.event.type = SPA_NODE_EVENT_TYPE_REUSE_BUFFER;
|
|
rb.event.size = sizeof (rb);
|
|
rb.port_id = 0;
|
|
rb.buffer_id = buffer->id;
|
|
this->event_cb (&this->node, &rb.event, this->user_data);
|
|
}
|
|
|
|
static SpaResult
|
|
spa_volume_node_process_output (SpaNode *node)
|
|
{
|
|
SpaVolume *this;
|
|
SpaVolumePort *port;
|
|
unsigned int si, di, i, n_samples, n_bytes, soff, doff ;
|
|
SpaBuffer *sbuf, *dbuf;
|
|
SpaData *sd, *dd;
|
|
uint16_t *src, *dst;
|
|
double volume;
|
|
SpaPortInput *input;
|
|
SpaPortInput *output;
|
|
|
|
if (node == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = SPA_CONTAINER_OF (node, SpaVolume, node);
|
|
|
|
port = &this->out_ports[0];
|
|
|
|
if ((output = port->io) == NULL)
|
|
return SPA_RESULT_ERROR;
|
|
if ((input = this->in_ports[0].io) == NULL)
|
|
return SPA_RESULT_ERROR;
|
|
|
|
if (!port->have_format)
|
|
return SPA_RESULT_NO_FORMAT;
|
|
|
|
if (this->in_ports[0].buffer == NULL)
|
|
return SPA_RESULT_NEED_MORE_INPUT;
|
|
|
|
volume = this->props[1].volume;
|
|
|
|
sbuf = this->in_ports[0].buffer;
|
|
dbuf = find_free_buffer (this, port);
|
|
|
|
si = di = 0;
|
|
soff = doff = 0;
|
|
|
|
while (true) {
|
|
if (si == sbuf->n_datas || di == dbuf->n_datas)
|
|
break;
|
|
|
|
sd = &sbuf->datas[si];
|
|
dd = &dbuf->datas[di];
|
|
|
|
src = (uint16_t*) ((uint8_t*)sd->data + sd->chunk->offset + soff);
|
|
dst = (uint16_t*) ((uint8_t*)dd->data + dd->chunk->offset + doff);
|
|
|
|
n_bytes = SPA_MIN (sd->chunk->size - soff, dd->chunk->size - doff);
|
|
n_samples = n_bytes / sizeof (uint16_t);
|
|
|
|
for (i = 0; i < n_samples; i++)
|
|
*src++ = *dst++ * volume;
|
|
|
|
soff += n_bytes;
|
|
doff += n_bytes;
|
|
|
|
if (soff >= sd->chunk->size) {
|
|
si++;
|
|
soff = 0;
|
|
}
|
|
if (doff >= dd->chunk->size) {
|
|
di++;
|
|
doff = 0;
|
|
}
|
|
}
|
|
if (sbuf != dbuf)
|
|
release_buffer (this, sbuf);
|
|
|
|
this->in_ports[0].buffer = NULL;
|
|
output->buffer_id = dbuf->id;
|
|
output->status = SPA_RESULT_OK;
|
|
|
|
input->flags |= SPA_PORT_STATUS_FLAG_NEED_INPUT;
|
|
output->flags &= ~SPA_PORT_STATUS_FLAG_HAVE_OUTPUT;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static const SpaNode volume_node = {
|
|
sizeof (SpaNode),
|
|
NULL,
|
|
SPA_NODE_STATE_INIT,
|
|
spa_volume_node_get_props,
|
|
spa_volume_node_set_props,
|
|
spa_volume_node_send_command,
|
|
spa_volume_node_set_event_callback,
|
|
spa_volume_node_get_n_ports,
|
|
spa_volume_node_get_port_ids,
|
|
spa_volume_node_add_port,
|
|
spa_volume_node_remove_port,
|
|
spa_volume_node_port_enum_formats,
|
|
spa_volume_node_port_set_format,
|
|
spa_volume_node_port_get_format,
|
|
spa_volume_node_port_get_info,
|
|
spa_volume_node_port_get_props,
|
|
spa_volume_node_port_set_props,
|
|
spa_volume_node_port_use_buffers,
|
|
spa_volume_node_port_alloc_buffers,
|
|
spa_volume_node_port_set_input,
|
|
spa_volume_node_port_set_output,
|
|
spa_volume_node_port_reuse_buffer,
|
|
spa_volume_node_port_send_command,
|
|
spa_volume_node_process_input,
|
|
spa_volume_node_process_output,
|
|
};
|
|
|
|
static SpaResult
|
|
spa_volume_get_interface (SpaHandle *handle,
|
|
uint32_t interface_id,
|
|
void **interface)
|
|
{
|
|
SpaVolume *this;
|
|
|
|
if (handle == NULL || interface == 0)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = (SpaVolume *) handle;
|
|
|
|
if (interface_id == this->uri.node)
|
|
*interface = &this->node;
|
|
else
|
|
return SPA_RESULT_UNKNOWN_INTERFACE;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
volume_clear (SpaHandle *handle)
|
|
{
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
volume_init (const SpaHandleFactory *factory,
|
|
SpaHandle *handle,
|
|
const SpaDict *info,
|
|
const SpaSupport *support,
|
|
unsigned int n_support)
|
|
{
|
|
SpaVolume *this;
|
|
unsigned int i;
|
|
|
|
if (factory == NULL || handle == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
handle->get_interface = spa_volume_get_interface;
|
|
handle->clear = volume_clear;
|
|
|
|
this = (SpaVolume *) handle;
|
|
|
|
for (i = 0; i < n_support; i++) {
|
|
if (strcmp (support[i].uri, SPA_ID_MAP_URI) == 0)
|
|
this->map = support[i].data;
|
|
else if (strcmp (support[i].uri, SPA_LOG_URI) == 0)
|
|
this->log = support[i].data;
|
|
}
|
|
if (this->map == NULL) {
|
|
spa_log_error (this->log, "an id-map is needed");
|
|
return SPA_RESULT_ERROR;
|
|
}
|
|
this->uri.node = spa_id_map_get_id (this->map, SPA_NODE_URI);
|
|
|
|
this->node = volume_node;
|
|
this->props[1].props.n_prop_info = PROP_ID_LAST;
|
|
this->props[1].props.prop_info = prop_info;
|
|
reset_volume_props (&this->props[1]);
|
|
|
|
this->in_ports[0].info.flags = SPA_PORT_INFO_FLAG_CAN_USE_BUFFERS |
|
|
SPA_PORT_INFO_FLAG_IN_PLACE;
|
|
this->out_ports[0].info.flags = SPA_PORT_INFO_FLAG_CAN_ALLOC_BUFFERS |
|
|
SPA_PORT_INFO_FLAG_CAN_USE_BUFFERS |
|
|
SPA_PORT_INFO_FLAG_NO_REF;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static const SpaInterfaceInfo volume_interfaces[] =
|
|
{
|
|
{ SPA_NODE_URI, },
|
|
};
|
|
|
|
static SpaResult
|
|
volume_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 = &volume_interfaces[index];
|
|
break;
|
|
default:
|
|
return SPA_RESULT_ENUM_END;
|
|
}
|
|
*(int*)state = ++index;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
const SpaHandleFactory spa_volume_factory =
|
|
{ "volume",
|
|
NULL,
|
|
sizeof (SpaVolume),
|
|
volume_init,
|
|
volume_enum_interface_info,
|
|
};
|