mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-10-29 05:40:27 -04:00
05829f33e6
We now only allow per port preallocated buffers. We exchange the index into the array instead of passing the buffers around. We still use the refcount to track when a buffer can be reused. Improve API a little, allow passing the node as the first argument of the interface call. Implement alloc_buffer in v4l2 and improve the test.
852 lines
22 KiB
C
852 lines
22 KiB
C
/* Spa
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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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#include <string.h>
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#include <stdio.h>
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#include <spa/node.h>
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#include <spa/audio/format.h>
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#define MAX_PORTS 128
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typedef struct _SpaAudioMixer SpaAudioMixer;
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typedef struct {
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SpaProps props;
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} SpaAudioMixerProps;
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typedef struct {
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SpaProps prop;
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} SpaAudioMixerPortProps;
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typedef struct _MixerBuffer MixerBuffer;
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struct _MixerBuffer {
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SpaBuffer buffer;
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SpaMeta meta[1];
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SpaMetaHeader header;
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SpaData data[1];
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uint16_t samples[4096];
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};
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typedef struct {
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bool valid;
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bool have_format;
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SpaAudioRawFormat format[2];
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SpaAudioMixerPortProps props[2];
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SpaPortInfo info;
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SpaPortStatus status;
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size_t buffer_index;
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size_t buffer_offset;
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size_t buffer_queued;
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MixerBuffer mix;
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SpaBuffer **buffers;
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unsigned int n_buffers;
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SpaBuffer *buffer;
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} SpaAudioMixerPort;
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struct _SpaAudioMixer {
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SpaHandle handle;
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SpaNode node;
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SpaAudioMixerProps props[2];
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SpaEventCallback event_cb;
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void *user_data;
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int port_count;
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int port_queued;
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SpaAudioMixerPort ports[MAX_PORTS];
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};
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enum {
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PROP_ID_LAST,
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};
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static const SpaPropInfo prop_info[] =
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{
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{ PROP_ID_LAST, },
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};
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static void
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reset_audiomixer_props (SpaAudioMixerProps *props)
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{
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}
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static SpaResult
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spa_audiomixer_node_get_props (SpaNode *node,
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SpaProps **props)
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{
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SpaAudioMixer *this;
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if (node == NULL || node->handle == NULL || props == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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memcpy (&this->props[0], &this->props[1], sizeof (this->props[1]));
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*props = &this->props[0].props;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_set_props (SpaNode *node,
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const SpaProps *props)
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{
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SpaAudioMixer *this;
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SpaAudioMixerProps *p;
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SpaResult res;
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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p = &this->props[1];
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if (props == NULL) {
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reset_audiomixer_props (p);
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return SPA_RESULT_OK;
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}
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res = spa_props_copy (props, &p->props);
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return res;
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}
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static SpaResult
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spa_audiomixer_node_send_command (SpaNode *node,
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SpaCommand *command)
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{
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SpaAudioMixer *this;
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if (node == NULL || node->handle == NULL || command == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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switch (command->type) {
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case SPA_COMMAND_INVALID:
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return SPA_RESULT_INVALID_COMMAND;
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case SPA_COMMAND_START:
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if (this->event_cb) {
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SpaEvent event;
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event.refcount = 1;
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event.notify = NULL;
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event.type = SPA_EVENT_TYPE_STARTED;
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event.port_id = -1;
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event.data = NULL;
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event.size = 0;
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this->event_cb (node, &event, this->user_data);
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}
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break;
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case SPA_COMMAND_STOP:
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if (this->event_cb) {
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SpaEvent event;
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event.refcount = 1;
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event.notify = NULL;
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event.type = SPA_EVENT_TYPE_STOPPED;
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event.port_id = -1;
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event.data = NULL;
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event.size = 0;
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this->event_cb (node, &event, this->user_data);
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}
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break;
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case SPA_COMMAND_FLUSH:
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case SPA_COMMAND_DRAIN:
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case SPA_COMMAND_MARKER:
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_set_event_callback (SpaNode *node,
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SpaEventCallback event,
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void *user_data)
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{
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SpaAudioMixer *this;
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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this->event_cb = event;
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this->user_data = user_data;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_get_n_ports (SpaNode *node,
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unsigned int *n_input_ports,
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unsigned int *max_input_ports,
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unsigned int *n_output_ports,
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unsigned int *max_output_ports)
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{
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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if (n_input_ports)
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*n_input_ports = 0;
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if (n_output_ports)
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*n_output_ports = 1;
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if (max_input_ports)
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*max_input_ports = MAX_PORTS;
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if (max_output_ports)
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*max_output_ports = 1;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_get_port_ids (SpaNode *node,
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unsigned int n_input_ports,
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uint32_t *input_ids,
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unsigned int n_output_ports,
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uint32_t *output_ids)
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{
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SpaAudioMixer *this;
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int i, idx;
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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if (input_ids) {
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for (i = 1, idx = 0; i < MAX_PORTS && idx < n_input_ports; i++) {
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if (this->ports[i].valid)
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input_ids[idx++] = i;
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}
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}
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if (n_output_ports > 0 && output_ids)
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output_ids[0] = 0;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_add_port (SpaNode *node,
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SpaDirection direction,
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uint32_t port_id)
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{
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SpaAudioMixer *this;
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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if (direction != SPA_DIRECTION_INPUT)
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return SPA_RESULT_INVALID_DIRECTION;
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if (port_id >= MAX_PORTS)
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return SPA_RESULT_INVALID_PORT;
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if (this->ports[port_id].valid)
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return SPA_RESULT_INVALID_PORT;
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this->ports[port_id].valid = true;
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this->port_count++;
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this->ports[port_id].info.flags = SPA_PORT_INFO_FLAG_CAN_USE_BUFFER |
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SPA_PORT_INFO_FLAG_REMOVABLE |
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SPA_PORT_INFO_FLAG_OPTIONAL |
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SPA_PORT_INFO_FLAG_IN_PLACE;
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this->ports[port_id].status.flags = SPA_PORT_STATUS_FLAG_NEED_INPUT;
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this->ports[0].status.flags &= ~SPA_PORT_STATUS_FLAG_HAVE_OUTPUT;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_remove_port (SpaNode *node,
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uint32_t port_id)
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{
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SpaAudioMixer *this;
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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if (port_id == 0 || port_id >= MAX_PORTS || !this->ports[port_id].valid)
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return SPA_RESULT_INVALID_PORT;
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this->ports[port_id].valid = false;
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this->port_count--;
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if (this->ports[port_id].buffer) {
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spa_buffer_unref (this->ports[port_id].buffer);
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this->ports[port_id].buffer = NULL;
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this->port_queued--;
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}
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if (this->port_count == this->port_queued)
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this->ports[0].status.flags |= SPA_PORT_STATUS_FLAG_HAVE_OUTPUT;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_port_enum_formats (SpaNode *node,
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uint32_t port_id,
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SpaFormat **format,
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const SpaFormat *filter,
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void **state)
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{
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SpaAudioMixer *this;
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SpaAudioMixerPort *port;
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int index;
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if (node == NULL || node->handle == NULL || format == NULL || state == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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if (port_id > MAX_PORTS || !this->ports[port_id].valid)
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return SPA_RESULT_INVALID_PORT;
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port = &this->ports[port_id];
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index = (*state == NULL ? 0 : *(int*)state);
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switch (index) {
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case 0:
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spa_audio_raw_format_init (&port->format[0]);
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break;
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default:
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return SPA_RESULT_ENUM_END;
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}
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*format = &port->format[0].format;
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*(int*)state = ++index;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_port_set_format (SpaNode *node,
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uint32_t port_id,
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SpaPortFormatFlags flags,
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const SpaFormat *format)
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{
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SpaAudioMixer *this;
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SpaAudioMixerPort *port;
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SpaResult res;
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if (node == NULL || node->handle == NULL || format == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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if (port_id > MAX_PORTS || !this->ports[port_id].valid)
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return SPA_RESULT_INVALID_PORT;
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port = &this->ports[port_id];
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if (format == NULL) {
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port->have_format = false;
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return SPA_RESULT_OK;
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}
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if ((res = spa_audio_raw_format_parse (format, &port->format[1])) < 0)
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return res;
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port->have_format = true;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_port_get_format (SpaNode *node,
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uint32_t port_id,
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const SpaFormat **format)
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{
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SpaAudioMixer *this;
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SpaAudioMixerPort *port;
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if (node == NULL || node->handle == NULL || format == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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if (port_id >= MAX_PORTS || !this->ports[port_id].valid)
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return SPA_RESULT_INVALID_PORT;
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port = &this->ports[port_id];
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if (!port->have_format)
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return SPA_RESULT_NO_FORMAT;
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*format = &port->format[1].format;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_port_get_info (SpaNode *node,
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uint32_t port_id,
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const SpaPortInfo **info)
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{
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SpaAudioMixer *this;
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SpaAudioMixerPort *port;
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if (node == NULL || node->handle == NULL || info == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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if (port_id >= MAX_PORTS || !this->ports[port_id].valid)
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return SPA_RESULT_INVALID_PORT;
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port = &this->ports[port_id];
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*info = &port->info;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_port_get_props (SpaNode *node,
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uint32_t port_id,
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SpaProps **props)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaResult
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spa_audiomixer_node_port_set_props (SpaNode *node,
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uint32_t port_id,
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const SpaProps *props)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaResult
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spa_audiomixer_node_port_get_status (SpaNode *node,
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uint32_t port_id,
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const SpaPortStatus **status)
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{
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SpaAudioMixer *this;
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SpaAudioMixerPort *port;
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if (node == NULL || node->handle == NULL || status == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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if (port_id >= MAX_PORTS || !this->ports[port_id].valid)
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return SPA_RESULT_INVALID_PORT;
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port = &this->ports[port_id];
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if (!port->have_format)
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return SPA_RESULT_NO_FORMAT;
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*status = &port->status;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_audiomixer_node_port_use_buffers (SpaNode *node,
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uint32_t port_id,
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SpaBuffer **buffers,
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uint32_t n_buffers)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaResult
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spa_audiomixer_node_port_alloc_buffers (SpaNode *node,
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uint32_t port_id,
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SpaAllocParam **params,
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uint32_t n_params,
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SpaBuffer **buffers,
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uint32_t *n_buffers)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaResult
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spa_audiomixer_node_port_push_input (SpaNode *node,
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unsigned int n_info,
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SpaInputInfo *info)
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{
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SpaAudioMixer *this;
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unsigned int i;
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bool have_error = false;
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if (node == NULL || node->handle == NULL || n_info == 0 || info == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaAudioMixer *) node->handle;
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if (this->ports[0].status.flags & SPA_PORT_STATUS_FLAG_HAVE_OUTPUT)
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return SPA_RESULT_HAVE_ENOUGH_INPUT;
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for (i = 0; i < n_info; i++) {
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SpaBuffer *buffer;
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SpaAudioMixerPort *port;
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int idx = info[i].port_id;
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if (idx >= MAX_PORTS || !this->ports[idx].valid) {
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info[i].status = SPA_RESULT_INVALID_PORT;
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have_error = true;
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continue;
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}
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port = &this->ports[idx];
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buffer = port->buffers[info[i].id];
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if (buffer == NULL) {
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info[i].status = SPA_RESULT_INVALID_ARGUMENTS;
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have_error = true;
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continue;
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}
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if (buffer) {
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if (!port->have_format) {
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info[i].status = SPA_RESULT_NO_FORMAT;
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have_error = true;
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continue;
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}
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if (this->ports[idx].buffer != NULL) {
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info[i].status = SPA_RESULT_HAVE_ENOUGH_INPUT;
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have_error = true;
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continue;
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}
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this->ports[idx].buffer = spa_buffer_ref (buffer);
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this->ports[idx].buffer_queued = buffer->size;
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this->ports[idx].buffer_index = 0;
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this->ports[idx].buffer_offset = 0;
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this->port_queued++;
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if (this->port_queued == this->port_count)
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this->ports[0].status.flags |= SPA_PORT_STATUS_FLAG_HAVE_OUTPUT;
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}
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info[i].status = SPA_RESULT_OK;
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}
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if (have_error)
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|
return SPA_RESULT_ERROR;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
|
|
static void
|
|
pull_port (SpaAudioMixer *this, uint32_t port_id, SpaOutputInfo *info, size_t pull_size)
|
|
{
|
|
SpaEvent event;
|
|
MixerBuffer *buffer = &this->ports[port_id].mix;
|
|
|
|
event.refcount = 1;
|
|
event.notify = NULL;
|
|
event.type = SPA_EVENT_TYPE_PULL_INPUT;
|
|
event.port_id = port_id;
|
|
event.data = buffer;
|
|
|
|
buffer->buffer.refcount = 1;
|
|
buffer->buffer.notify = NULL;
|
|
buffer->buffer.size = pull_size;
|
|
buffer->buffer.n_metas = 1;
|
|
buffer->buffer.metas = buffer->meta;
|
|
buffer->buffer.n_datas = 1;
|
|
buffer->buffer.datas = buffer->data;
|
|
|
|
buffer->header.flags = 0;
|
|
buffer->header.seq = 0;
|
|
buffer->header.pts = 0;
|
|
buffer->header.dts_offset = 0;
|
|
|
|
buffer->meta[0].type = SPA_META_TYPE_HEADER;
|
|
buffer->meta[0].data = &buffer->header;
|
|
buffer->meta[0].size = sizeof (buffer->header);
|
|
|
|
buffer->data[0].type = SPA_DATA_TYPE_MEMPTR;
|
|
buffer->data[0].ptr = buffer->samples;
|
|
buffer->data[0].ptr_type = "sysmem";
|
|
buffer->data[0].size = pull_size;
|
|
|
|
this->event_cb (&this->node, &event, this->user_data);
|
|
}
|
|
|
|
static void
|
|
add_port_data (SpaAudioMixer *this, SpaBuffer *out, SpaAudioMixerPort *port)
|
|
{
|
|
int i, oi = 0;
|
|
uint8_t *op, *ip;
|
|
size_t os, is, chunk;
|
|
|
|
op = ip = NULL;
|
|
|
|
while (true) {
|
|
if (op == NULL) {
|
|
op = out->datas[oi].ptr;
|
|
os = out->datas[oi].size;
|
|
}
|
|
if (ip == NULL) {
|
|
ip = port->buffer->datas[port->buffer_index].ptr;
|
|
is = port->buffer->datas[port->buffer_index].size;
|
|
ip += port->buffer_offset;
|
|
is -= port->buffer_offset;
|
|
}
|
|
|
|
chunk = os < is ? os : is;
|
|
|
|
for (i = 0; i < chunk; i++)
|
|
op[i] += ip[i];
|
|
|
|
if ((is -= chunk) == 0) {
|
|
if (++port->buffer_index == port->buffer->n_datas) {
|
|
spa_buffer_unref (port->buffer);
|
|
port->buffer = NULL;
|
|
port->status.flags = SPA_PORT_STATUS_FLAG_NEED_INPUT;
|
|
this->ports[0].status.flags &= ~SPA_PORT_STATUS_FLAG_HAVE_OUTPUT;
|
|
break;
|
|
}
|
|
port->buffer_offset = 0;
|
|
ip = NULL;
|
|
} else {
|
|
port->buffer_offset += chunk;
|
|
}
|
|
port->buffer_queued -= chunk;
|
|
|
|
if ((os -= chunk) == 0) {
|
|
if (++oi == out->n_datas)
|
|
break;
|
|
op = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static SpaResult
|
|
mix_data (SpaAudioMixer *this, SpaOutputInfo *info)
|
|
{
|
|
int i, min_size, min_port, pull_size;
|
|
SpaBuffer *buf;
|
|
|
|
if (info->port_id != 0)
|
|
return SPA_RESULT_INVALID_PORT;
|
|
|
|
pull_size = info->size;
|
|
|
|
min_size = 0;
|
|
min_port = 0;
|
|
for (i = 1; i < MAX_PORTS; i++) {
|
|
if (!this->ports[i].valid)
|
|
continue;
|
|
|
|
if (this->ports[i].buffer == NULL) {
|
|
if (pull_size && info->flags & SPA_OUTPUT_FLAG_PULL) {
|
|
pull_port (this, i, info, pull_size);
|
|
}
|
|
if (this->ports[i].buffer == NULL)
|
|
return SPA_RESULT_NEED_MORE_INPUT;
|
|
}
|
|
|
|
if (min_size == 0 || this->ports[i].buffer_queued < min_size) {
|
|
min_size = this->ports[i].buffer_queued;
|
|
min_port = i;
|
|
}
|
|
}
|
|
if (min_port == 0)
|
|
return SPA_RESULT_NEED_MORE_INPUT;
|
|
|
|
buf = this->ports[min_port].buffer;
|
|
info->id = buf->id;
|
|
this->ports[min_port].buffer = NULL;
|
|
this->ports[min_port].status.flags = SPA_PORT_STATUS_FLAG_NEED_INPUT;
|
|
this->ports[0].status.flags &= ~SPA_PORT_STATUS_FLAG_HAVE_OUTPUT;
|
|
|
|
for (i = 1; i < MAX_PORTS; i++) {
|
|
if (!this->ports[i].valid || this->ports[i].buffer == NULL)
|
|
continue;
|
|
|
|
add_port_data (this, buf, &this->ports[i]);
|
|
}
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_audiomixer_node_port_pull_output (SpaNode *node,
|
|
unsigned int n_info,
|
|
SpaOutputInfo *info)
|
|
{
|
|
SpaAudioMixer *this;
|
|
SpaAudioMixerPort *port;
|
|
int i;
|
|
bool have_error = false;
|
|
|
|
if (node == NULL || node->handle == NULL || n_info == 0 || info == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = (SpaAudioMixer *) node->handle;
|
|
|
|
if (info->port_id != 0)
|
|
return SPA_RESULT_INVALID_PORT;
|
|
|
|
port = &this->ports[info->port_id];
|
|
|
|
if (!port->have_format)
|
|
return SPA_RESULT_NO_FORMAT;
|
|
|
|
// if (!(this->ports[0].status.flags & SPA_PORT_STATUS_FLAG_HAVE_OUTPUT))
|
|
// return SPA_RESULT_NEED_MORE_INPUT;
|
|
|
|
for (i = 0; i < n_info; i++) {
|
|
if ((info[i].status = mix_data (this, &info[i])) < 0) {
|
|
printf ("error mixing: %d\n", info[i].status);
|
|
have_error = true;
|
|
continue;
|
|
}
|
|
}
|
|
if (have_error)
|
|
return SPA_RESULT_ERROR;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_audiomixer_node_port_push_event (SpaNode *node,
|
|
uint32_t port_id,
|
|
SpaEvent *event)
|
|
{
|
|
return SPA_RESULT_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static const SpaNode audiomixer_node = {
|
|
NULL,
|
|
sizeof (SpaNode),
|
|
spa_audiomixer_node_get_props,
|
|
spa_audiomixer_node_set_props,
|
|
spa_audiomixer_node_send_command,
|
|
spa_audiomixer_node_set_event_callback,
|
|
spa_audiomixer_node_get_n_ports,
|
|
spa_audiomixer_node_get_port_ids,
|
|
spa_audiomixer_node_add_port,
|
|
spa_audiomixer_node_remove_port,
|
|
spa_audiomixer_node_port_enum_formats,
|
|
spa_audiomixer_node_port_set_format,
|
|
spa_audiomixer_node_port_get_format,
|
|
spa_audiomixer_node_port_get_info,
|
|
spa_audiomixer_node_port_get_props,
|
|
spa_audiomixer_node_port_set_props,
|
|
spa_audiomixer_node_port_use_buffers,
|
|
spa_audiomixer_node_port_alloc_buffers,
|
|
spa_audiomixer_node_port_get_status,
|
|
spa_audiomixer_node_port_push_input,
|
|
spa_audiomixer_node_port_pull_output,
|
|
spa_audiomixer_node_port_push_event,
|
|
};
|
|
|
|
static SpaResult
|
|
spa_audiomixer_get_interface (SpaHandle *handle,
|
|
uint32_t interface_id,
|
|
void **interface)
|
|
{
|
|
SpaAudioMixer *this;
|
|
|
|
if (handle == NULL || interface == 0)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = (SpaAudioMixer *) handle;
|
|
|
|
switch (interface_id) {
|
|
case SPA_INTERFACE_ID_NODE:
|
|
*interface = &this->node;
|
|
break;
|
|
default:
|
|
return SPA_RESULT_UNKNOWN_INTERFACE;
|
|
}
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_audiomixer_init (const SpaHandleFactory *factory,
|
|
SpaHandle *handle)
|
|
{
|
|
SpaAudioMixer *this;
|
|
|
|
if (factory == NULL || handle == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
handle->get_interface = spa_audiomixer_get_interface;
|
|
|
|
this = (SpaAudioMixer *) handle;
|
|
this->node = audiomixer_node;
|
|
this->node.handle = handle;
|
|
this->props[1].props.n_prop_info = PROP_ID_LAST;
|
|
this->props[1].props.prop_info = prop_info;
|
|
this->props[1].props.set_prop = spa_props_generic_set_prop;
|
|
this->props[1].props.get_prop = spa_props_generic_get_prop;
|
|
reset_audiomixer_props (&this->props[1]);
|
|
|
|
this->ports[0].valid = true;
|
|
this->ports[0].info.flags = SPA_PORT_INFO_FLAG_CAN_GIVE_BUFFER |
|
|
SPA_PORT_INFO_FLAG_CAN_USE_BUFFER |
|
|
SPA_PORT_INFO_FLAG_NO_REF;
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static const SpaInterfaceInfo audiomixer_interfaces[] =
|
|
{
|
|
{ SPA_INTERFACE_ID_NODE,
|
|
SPA_INTERFACE_ID_NODE_NAME,
|
|
SPA_INTERFACE_ID_NODE_DESCRIPTION,
|
|
},
|
|
};
|
|
|
|
static SpaResult
|
|
audiomixer_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 = &audiomixer_interfaces[index];
|
|
break;
|
|
default:
|
|
return SPA_RESULT_ENUM_END;
|
|
}
|
|
*(int*)state = ++index;
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
const SpaHandleFactory spa_audiomixer_factory =
|
|
{ "audiomixer",
|
|
NULL,
|
|
sizeof (SpaAudioMixer),
|
|
spa_audiomixer_init,
|
|
audiomixer_enum_interface_info,
|
|
};
|