mirror of
https://gitlab.freedesktop.org/pipewire/pipewire
synced 2024-10-14 11:53:16 +00:00
2133 lines
52 KiB
C
2133 lines
52 KiB
C
/* Spa MIDI node */
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/* SPDX-FileCopyrightText: Copyright © 2022 Pauli Virtanen */
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/* SPDX-License-Identifier: MIT */
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#include <unistd.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <time.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <spa/support/plugin.h>
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#include <spa/support/loop.h>
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#include <spa/support/log.h>
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#include <spa/support/system.h>
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#include <spa/utils/list.h>
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#include <spa/utils/keys.h>
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#include <spa/utils/names.h>
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#include <spa/utils/string.h>
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#include <spa/utils/result.h>
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#include <spa/utils/dll.h>
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#include <spa/utils/ringbuffer.h>
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#include <spa/monitor/device.h>
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#include <spa/control/control.h>
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#include <spa/node/node.h>
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#include <spa/node/utils.h>
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#include <spa/node/io.h>
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#include <spa/node/keys.h>
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#include <spa/param/param.h>
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#include <spa/param/latency-utils.h>
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#include <spa/param/audio/format.h>
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#include <spa/param/audio/format-utils.h>
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#include <spa/pod/filter.h>
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#include <spa/debug/mem.h>
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#include <spa/debug/log.h>
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#include "midi.h"
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#include "bluez5-interface-gen.h"
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SPA_LOG_TOPIC_DEFINE_STATIC(log_topic, "spa.bluez5.midi.node");
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#undef SPA_LOG_TOPIC_DEFAULT
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#define SPA_LOG_TOPIC_DEFAULT &log_topic
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#define DEFAULT_CLOCK_NAME "clock.system.monotonic"
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#define DLL_BW 0.05
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#define DEFAULT_LATENCY_OFFSET (0 * SPA_NSEC_PER_MSEC)
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#define MAX_BUFFERS 32
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#define MIDI_RINGBUF_SIZE (8192*4)
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enum node_role {
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NODE_SERVER,
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NODE_CLIENT,
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};
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struct props {
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char clock_name[64];
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char device_name[512];
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int64_t latency_offset;
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};
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struct midi_event_ringbuffer_entry {
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uint64_t time;
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unsigned int size;
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};
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struct midi_event_ringbuffer {
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struct spa_ringbuffer rbuf;
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uint8_t buf[MIDI_RINGBUF_SIZE];
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};
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struct buffer {
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uint32_t id;
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unsigned int outgoing:1;
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struct spa_buffer *buf;
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struct spa_meta_header *h;
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struct spa_list link;
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};
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struct time_sync {
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uint64_t prev_recv_time;
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uint64_t recv_time;
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uint16_t prev_device_timestamp;
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uint16_t device_timestamp;
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uint64_t device_time;
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struct spa_dll dll;
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};
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struct port {
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uint32_t id;
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enum spa_direction direction;
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struct spa_audio_info current_format;
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unsigned int have_format:1;
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uint64_t info_all;
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struct spa_port_info info;
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struct spa_io_buffers *io;
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struct spa_latency_info latency;
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#define IDX_EnumFormat 0
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#define IDX_Meta 1
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#define IDX_IO 2
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#define IDX_Format 3
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#define IDX_Buffers 4
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#define IDX_Latency 5
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#define N_PORT_PARAMS 6
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struct spa_param_info params[N_PORT_PARAMS];
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struct buffer buffers[MAX_BUFFERS];
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uint32_t n_buffers;
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struct spa_list free;
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struct spa_list ready;
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int fd;
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uint16_t mtu;
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struct buffer *buffer;
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struct spa_pod_builder builder;
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struct spa_pod_frame frame;
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struct time_sync sync;
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unsigned int acquired:1;
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GCancellable *acquire_call;
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struct spa_source source;
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struct impl *impl;
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};
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struct impl {
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struct spa_handle handle;
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struct spa_node node;
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struct spa_log *log;
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struct spa_loop *main_loop;
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struct spa_loop *data_loop;
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struct spa_system *data_system;
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GDBusConnection *conn;
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Bluez5GattCharacteristic1 *proxy;
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struct spa_hook_list hooks;
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struct spa_callbacks callbacks;
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uint64_t info_all;
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struct spa_node_info info;
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#define IDX_PropInfo 0
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#define IDX_Props 1
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#define IDX_NODE_IO 2
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#define N_NODE_PARAMS 3
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struct spa_param_info params[N_NODE_PARAMS];
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struct props props;
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#define PORT_IN 0
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#define PORT_OUT 1
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#define N_PORTS 2
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struct port ports[N_PORTS];
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char *chr_path;
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unsigned int started:1;
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unsigned int following:1;
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struct spa_source timer_source;
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int timerfd;
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struct spa_io_clock *clock;
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struct spa_io_position *position;
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uint32_t duration;
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uint32_t rate;
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uint64_t current_time;
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uint64_t next_time;
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struct midi_event_ringbuffer event_rbuf;
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struct spa_bt_midi_parser parser;
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struct spa_bt_midi_parser tmp_parser;
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uint8_t read_buffer[MIDI_MAX_MTU];
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struct spa_bt_midi_writer writer;
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enum node_role role;
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struct spa_bt_midi_server *server;
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};
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#define CHECK_PORT(this,d,p) ((p) == 0 && ((d) == SPA_DIRECTION_INPUT || (d) == SPA_DIRECTION_OUTPUT))
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#define GET_PORT(this,d,p) (&(this)->ports[(d) == SPA_DIRECTION_OUTPUT ? PORT_OUT : PORT_IN])
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static void midi_event_ringbuffer_init(struct midi_event_ringbuffer *mbuf)
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{
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spa_ringbuffer_init(&mbuf->rbuf);
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}
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static int midi_event_ringbuffer_push(struct midi_event_ringbuffer *mbuf,
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uint64_t time, uint8_t *event, unsigned int size)
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{
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const unsigned int bufsize = sizeof(mbuf->buf);
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int32_t avail;
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uint32_t index;
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struct midi_event_ringbuffer_entry evt = {
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.time = time,
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.size = size
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};
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avail = spa_ringbuffer_get_write_index(&mbuf->rbuf, &index);
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if (avail < 0 || avail + sizeof(evt) + size > bufsize)
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return -ENOSPC;
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spa_ringbuffer_write_data(&mbuf->rbuf, mbuf->buf, bufsize, index % bufsize,
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&evt, sizeof(evt));
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index += sizeof(evt);
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spa_ringbuffer_write_update(&mbuf->rbuf, index);
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spa_ringbuffer_write_data(&mbuf->rbuf, mbuf->buf, bufsize, index % bufsize,
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event, size);
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index += size;
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spa_ringbuffer_write_update(&mbuf->rbuf, index);
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return 0;
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}
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static int midi_event_ringbuffer_peek(struct midi_event_ringbuffer *mbuf, uint64_t *time, unsigned int *size)
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{
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const unsigned bufsize = sizeof(mbuf->buf);
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int32_t avail;
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uint32_t index;
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struct midi_event_ringbuffer_entry evt;
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avail = spa_ringbuffer_get_read_index(&mbuf->rbuf, &index);
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if (avail < (int)sizeof(evt))
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return -ENOENT;
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spa_ringbuffer_read_data(&mbuf->rbuf, mbuf->buf, bufsize, index % bufsize,
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&evt, sizeof(evt));
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*time = evt.time;
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*size = evt.size;
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return 0;
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}
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static int midi_event_ringbuffer_pop(struct midi_event_ringbuffer *mbuf, uint8_t *data, size_t max_size)
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{
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const unsigned bufsize = sizeof(mbuf->buf);
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int32_t avail;
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uint32_t index;
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struct midi_event_ringbuffer_entry evt;
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avail = spa_ringbuffer_get_read_index(&mbuf->rbuf, &index);
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if (avail < (int)sizeof(evt))
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return -ENOENT;
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spa_ringbuffer_read_data(&mbuf->rbuf, mbuf->buf, bufsize, index % bufsize,
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&evt, sizeof(evt));
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index += sizeof(evt);
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avail -= sizeof(evt);
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spa_ringbuffer_read_update(&mbuf->rbuf, index);
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if ((uint32_t)avail < evt.size) {
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/* corrupted ringbuffer: should never happen */
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spa_assert_not_reached();
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return -EINVAL;
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}
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if (evt.size <= max_size)
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spa_ringbuffer_read_data(&mbuf->rbuf, mbuf->buf, bufsize, index % bufsize,
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data, SPA_MIN(max_size, evt.size));
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index += evt.size;
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spa_ringbuffer_read_update(&mbuf->rbuf, index);
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if (evt.size > max_size)
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return -ENOSPC;
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return 0;
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}
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static void reset_props(struct props *props)
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{
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props->latency_offset = DEFAULT_LATENCY_OFFSET;
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strncpy(props->clock_name, DEFAULT_CLOCK_NAME, sizeof(props->clock_name));
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props->device_name[0] = '\0';
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}
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static bool is_following(struct impl *this)
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{
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return this->position && this->clock && this->position->clock.id != this->clock->id;
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}
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static int set_timeout(struct impl *this, uint64_t time)
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{
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struct itimerspec ts;
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ts.it_value.tv_sec = time / SPA_NSEC_PER_SEC;
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ts.it_value.tv_nsec = time % SPA_NSEC_PER_SEC;
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ts.it_interval.tv_sec = 0;
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ts.it_interval.tv_nsec = 0;
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return spa_system_timerfd_settime(this->data_system,
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this->timerfd, SPA_FD_TIMER_ABSTIME, &ts, NULL);
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}
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static int set_timers(struct impl *this)
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{
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struct timespec now;
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spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &now);
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this->next_time = SPA_TIMESPEC_TO_NSEC(&now);
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return set_timeout(this, this->following ? 0 : this->next_time);
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}
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static void recycle_buffer(struct impl *this, struct port *port, uint32_t buffer_id)
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{
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struct buffer *b = &port->buffers[buffer_id];
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if (b->outgoing) {
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spa_log_trace(this->log, "%p: recycle buffer %u", this, buffer_id);
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spa_list_append(&port->free, &b->link);
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b->outgoing = false;
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}
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}
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static int clear_buffers(struct impl *this, struct port *port)
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{
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if (port->n_buffers > 0) {
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spa_list_init(&port->free);
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spa_list_init(&port->ready);
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port->n_buffers = 0;
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}
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return 0;
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}
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static void reset_buffers(struct port *port)
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{
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uint32_t i;
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spa_list_init(&port->free);
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spa_list_init(&port->ready);
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for (i = 0; i < port->n_buffers; i++) {
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struct buffer *b = &port->buffers[i];
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if (port->direction == SPA_DIRECTION_OUTPUT) {
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spa_list_append(&port->free, &b->link);
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b->outgoing = false;
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} else {
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b->outgoing = true;
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}
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}
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}
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static struct buffer *peek_buffer(struct impl *this, struct port *port)
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{
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if (spa_list_is_empty(&port->free))
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return NULL;
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return spa_list_first(&port->free, struct buffer, link);
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}
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static int prepare_buffer(struct impl *this, struct port *port)
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{
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if (port->buffer != NULL)
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return 0;
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if ((port->buffer = peek_buffer(this, port)) == NULL)
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return -EPIPE;
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spa_pod_builder_init(&port->builder,
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port->buffer->buf->datas[0].data,
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port->buffer->buf->datas[0].maxsize);
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spa_pod_builder_push_sequence(&port->builder, &port->frame, 0);
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return 0;
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}
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static int finish_buffer(struct impl *this, struct port *port)
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{
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if (port->buffer == NULL)
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return 0;
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spa_pod_builder_pop(&port->builder, &port->frame);
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port->buffer->buf->datas[0].chunk->offset = 0;
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port->buffer->buf->datas[0].chunk->size = port->builder.state.offset;
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/* move buffer to ready queue */
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spa_list_remove(&port->buffer->link);
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spa_list_append(&port->ready, &port->buffer->link);
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port->buffer = NULL;
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return 0;
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}
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/* Replace value -> value + n*period, to minimize |value - target| */
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static int64_t unwrap_to_closest(int64_t value, int64_t target, int64_t period)
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{
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if (value > target)
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value -= SPA_ROUND_DOWN(value - target + period/2, period);
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if (value < target)
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value += SPA_ROUND_DOWN(target - value + period/2, period);
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return value;
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}
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static int64_t time_diff(uint64_t a, uint64_t b)
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{
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if (a >= b)
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return a - b;
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else
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return -(int64_t)(b - a);
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}
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static void midi_event_get_last_timestamp(void *user_data, uint16_t timestamp, uint8_t *data, size_t size)
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{
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int *last_timestamp = user_data;
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*last_timestamp = timestamp;
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}
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static uint64_t midi_convert_time(struct time_sync *sync, uint16_t timestamp)
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{
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int offset;
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/*
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* sync->device_timestamp is a device timestamp that corresponds to system
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* clock time sync->device_time.
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*
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* It is the timestamp of the last MIDI event in the current packet, so we can
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* assume here no event here has timestamp after it.
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*/
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if (timestamp > sync->device_timestamp)
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offset = sync->device_timestamp + MIDI_CLOCK_PERIOD_MSEC - timestamp;
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else
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offset = sync->device_timestamp - timestamp;
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return sync->device_time - offset * SPA_NSEC_PER_MSEC;
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}
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static void midi_event_recv(void *user_data, uint16_t timestamp, uint8_t *data, size_t size)
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{
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struct impl *this = user_data;
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struct port *port = &this->ports[PORT_OUT];
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struct time_sync *sync = &port->sync;
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uint64_t time;
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int res;
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spa_assert(size > 0);
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time = midi_convert_time(sync, timestamp);
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spa_log_trace(this->log, "%p: event:0x%x size:%d timestamp:%d time:%"PRIu64"",
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this, (int)data[0], (int)size, (int)timestamp, (uint64_t)time);
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res = midi_event_ringbuffer_push(&this->event_rbuf, time, data, size);
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if (res < 0) {
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midi_event_ringbuffer_init(&this->event_rbuf);
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spa_log_warn(this->log, "%p: MIDI receive buffer overflow: %s",
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this, spa_strerror(res));
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}
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}
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static int unacquire_port(struct port *port)
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{
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struct impl *this = port->impl;
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if (!port->acquired)
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return 0;
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spa_log_debug(this->log, "%p: unacquire port:%d", this, port->direction);
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shutdown(port->fd, SHUT_RDWR);
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close(port->fd);
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port->fd = -1;
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port->acquired = false;
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if (this->server)
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spa_bt_midi_server_released(this->server,
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(port->direction == SPA_DIRECTION_OUTPUT));
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return 0;
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}
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static int do_unacquire_port(struct spa_loop *loop, bool async, uint32_t seq,
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const void *data, size_t size, void *user_data)
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{
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struct port *port = user_data;
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/* in main thread */
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unacquire_port(port);
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return 0;
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}
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static void on_ready_read(struct spa_source *source)
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{
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struct port *port = source->data;
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struct impl *this = port->impl;
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struct timespec now;
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int res, size, last_timestamp;
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if (SPA_FLAG_IS_SET(source->rmask, SPA_IO_ERR) ||
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SPA_FLAG_IS_SET(source->rmask, SPA_IO_HUP)) {
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spa_log_debug(this->log, "%p: port:%d ERR/HUP", this, port->direction);
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goto stop;
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}
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spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &now);
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/* read data from socket */
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again:
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size = recv(port->fd, this->read_buffer, sizeof(this->read_buffer), MSG_DONTWAIT | MSG_NOSIGNAL);
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if (size == 0) {
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return;
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} else if (size < 0) {
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if (errno == EINTR)
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goto again;
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if (errno == EAGAIN || errno == EWOULDBLOCK)
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return;
|
|
goto stop;
|
|
}
|
|
|
|
spa_log_trace(this->log, "%p: port:%d recv data size:%d", this, port->direction, size);
|
|
spa_debug_log_mem(this->log, SPA_LOG_LEVEL_TRACE, 4, this->read_buffer, size);
|
|
|
|
if (port->direction != SPA_DIRECTION_OUTPUT) {
|
|
/* Just monitor errors for the input port */
|
|
spa_log_debug(this->log, "%p: port:%d is not RX port; ignoring data",
|
|
this, port->direction);
|
|
return;
|
|
}
|
|
|
|
/* prepare for producing events */
|
|
if (port->io == NULL || port->n_buffers == 0 || !this->started)
|
|
return;
|
|
|
|
/*
|
|
* Remote clock synchronization:
|
|
*
|
|
* Assume: Last timestamp in packet on average corresponds to packet send time.
|
|
* There is some unknown latency in between, but on average it is constant.
|
|
*
|
|
* The `device_time` computed below is the estimated wall-clock time
|
|
* corresponding to the timestamp `device_timestamp` of the last event
|
|
* in the packet. This timestamp is late by the average transmission latency,
|
|
* which is unknown.
|
|
*
|
|
* Packet reception jitter and any clock drift is smoothed over with DLL.
|
|
* The estimated timestamps are stable and preserve event intervals.
|
|
*
|
|
* To allow latency_offset to work better, we don't write the events
|
|
* to the output buffer here, but instead put them to a ringbuffer.
|
|
* This is because if the offset shifts events to later buffers,
|
|
* this is simpler to handle with the rbuf.
|
|
*/
|
|
last_timestamp = -1;
|
|
spa_bt_midi_parser_dup(&this->parser, &this->tmp_parser, true);
|
|
res = spa_bt_midi_parser_parse(&this->tmp_parser, this->read_buffer, size, true,
|
|
midi_event_get_last_timestamp, &last_timestamp);
|
|
if (res >= 0 && last_timestamp >= 0) {
|
|
struct time_sync *sync = &port->sync;
|
|
int64_t clock_elapsed;
|
|
int64_t device_elapsed;
|
|
int64_t err_nsec;
|
|
double corr, tcorr;
|
|
|
|
sync->prev_recv_time = sync->recv_time;
|
|
sync->recv_time = SPA_TIMESPEC_TO_NSEC(&now);
|
|
|
|
sync->prev_device_timestamp = sync->device_timestamp;
|
|
sync->device_timestamp = last_timestamp;
|
|
|
|
if (port->sync.prev_recv_time == 0) {
|
|
sync->prev_recv_time = sync->recv_time;
|
|
sync->prev_device_timestamp = sync->device_timestamp;
|
|
spa_dll_init(&sync->dll);
|
|
}
|
|
if (SPA_UNLIKELY(sync->dll.bw == 0))
|
|
spa_dll_set_bw(&sync->dll, DLL_BW, 1024, 48000);
|
|
|
|
/* move device clock forward */
|
|
clock_elapsed = sync->recv_time - sync->prev_recv_time;
|
|
|
|
device_elapsed = (int)sync->device_timestamp - (int)sync->prev_device_timestamp;
|
|
device_elapsed *= SPA_NSEC_PER_MSEC;
|
|
device_elapsed = unwrap_to_closest(device_elapsed, clock_elapsed, MIDI_CLOCK_PERIOD_NSEC);
|
|
sync->device_time += device_elapsed;
|
|
|
|
/* smooth clock sync */
|
|
err_nsec = time_diff(sync->recv_time, sync->device_time);
|
|
corr = spa_dll_update(&sync->dll,
|
|
-SPA_CLAMP(err_nsec, -20*SPA_NSEC_PER_MSEC, 20*SPA_NSEC_PER_MSEC)
|
|
* this->rate / SPA_NSEC_PER_SEC);
|
|
tcorr = SPA_MIN(device_elapsed, SPA_NSEC_PER_SEC) * (corr - 1);
|
|
sync->device_time += tcorr;
|
|
|
|
/* reset if too much off */
|
|
if (err_nsec < -50 * SPA_NSEC_PER_MSEC ||
|
|
err_nsec > 200 * SPA_NSEC_PER_MSEC ||
|
|
SPA_ABS(tcorr) > 20*SPA_NSEC_PER_MSEC ||
|
|
device_elapsed < 0) {
|
|
spa_log_debug(this->log, "%p: device clock sync off too much: resync", this);
|
|
spa_dll_init(&sync->dll);
|
|
sync->device_time = sync->recv_time;
|
|
}
|
|
|
|
spa_log_debug(this->log,
|
|
"timestamp:%d dt:%d dt2:%d err:%.1f tcorr:%.2f (ms) corr:%f",
|
|
(int)sync->device_timestamp,
|
|
(int)(clock_elapsed/SPA_NSEC_PER_MSEC),
|
|
(int)(device_elapsed/SPA_NSEC_PER_MSEC),
|
|
(double)err_nsec / SPA_NSEC_PER_MSEC,
|
|
tcorr/SPA_NSEC_PER_MSEC,
|
|
corr);
|
|
}
|
|
|
|
/* put midi event data to the buffer */
|
|
res = spa_bt_midi_parser_parse(&this->parser, this->read_buffer, size, false,
|
|
midi_event_recv, this);
|
|
if (res < 0) {
|
|
/* bad data */
|
|
spa_bt_midi_parser_init(&this->parser);
|
|
|
|
spa_log_info(this->log, "BLE MIDI data packet parsing failed: %d", res);
|
|
spa_debug_log_mem(this->log, SPA_LOG_LEVEL_DEBUG, 4, this->read_buffer, size);
|
|
}
|
|
|
|
return;
|
|
|
|
stop:
|
|
spa_log_debug(this->log, "%p: port:%d stopping port", this, port->direction);
|
|
|
|
if (port->source.loop)
|
|
spa_loop_remove_source(this->data_loop, &port->source);
|
|
|
|
/* port->acquired is updated only from the main thread */
|
|
spa_loop_invoke(this->main_loop, do_unacquire_port, 0, NULL, 0, false, port);
|
|
}
|
|
|
|
static int process_output(struct impl *this)
|
|
{
|
|
struct port *port = &this->ports[PORT_OUT];
|
|
struct buffer *buffer;
|
|
struct spa_io_buffers *io = port->io;
|
|
|
|
/* Check if we are able to process */
|
|
if (io == NULL || !port->acquired)
|
|
return SPA_STATUS_OK;
|
|
|
|
/* Return if we already have a buffer */
|
|
if (io->status == SPA_STATUS_HAVE_DATA)
|
|
return SPA_STATUS_HAVE_DATA;
|
|
|
|
/* Recycle */
|
|
if (io->buffer_id < port->n_buffers) {
|
|
recycle_buffer(this, port, io->buffer_id);
|
|
io->buffer_id = SPA_ID_INVALID;
|
|
}
|
|
|
|
/* Produce buffer */
|
|
if (prepare_buffer(this, port) >= 0) {
|
|
/*
|
|
* this->current_time is at the end time of the buffer, and offsets
|
|
* are recorded vs. the start of the buffer.
|
|
*/
|
|
const uint64_t start_time = this->current_time
|
|
- this->duration * SPA_NSEC_PER_SEC / this->rate;
|
|
const uint64_t end_time = this->current_time;
|
|
uint64_t time;
|
|
uint32_t offset;
|
|
void *buf;
|
|
unsigned int size;
|
|
int res;
|
|
|
|
while (true) {
|
|
res = midi_event_ringbuffer_peek(&this->event_rbuf, &time, &size);
|
|
if (res < 0)
|
|
break;
|
|
|
|
time -= this->props.latency_offset;
|
|
|
|
if (time > end_time) {
|
|
break;
|
|
} else if (time + SPA_NSEC_PER_MSEC < start_time) {
|
|
/* Log events in the past by more than 1 ms, but don't
|
|
* do anything about them. The user can change the latency
|
|
* offset to choose whether to tradeoff latency for more
|
|
* accurate timestamps.
|
|
*
|
|
* TODO: maybe this information should be available in
|
|
* a more visible place, some latency property?
|
|
*/
|
|
spa_log_debug(this->log, "%p: event in the past by %d ms",
|
|
this, (int)((start_time - time) / SPA_NSEC_PER_MSEC));
|
|
}
|
|
|
|
time = SPA_MAX(time, start_time) - start_time;
|
|
offset = time * this->rate / SPA_NSEC_PER_SEC;
|
|
offset = SPA_CLAMP(offset, 0u, this->duration - 1);
|
|
|
|
spa_pod_builder_control(&port->builder, offset, SPA_CONTROL_Midi);
|
|
buf = spa_pod_builder_reserve_bytes(&port->builder, size);
|
|
if (buf) {
|
|
midi_event_ringbuffer_pop(&this->event_rbuf, buf, size);
|
|
|
|
spa_log_trace(this->log, "%p: produce event:0x%x offset:%d time:%"PRIu64"",
|
|
this, (int)*(uint8_t*)buf, (int)offset,
|
|
(uint64_t)(start_time + offset * SPA_NSEC_PER_SEC / this->rate));
|
|
}
|
|
}
|
|
|
|
finish_buffer(this, port);
|
|
}
|
|
|
|
/* Return if there are no buffers ready to be processed */
|
|
if (spa_list_is_empty(&port->ready))
|
|
return SPA_STATUS_OK;
|
|
|
|
/* Get the new buffer from the ready list */
|
|
buffer = spa_list_first(&port->ready, struct buffer, link);
|
|
spa_list_remove(&buffer->link);
|
|
buffer->outgoing = true;
|
|
|
|
/* Set the new buffer in IO */
|
|
io->buffer_id = buffer->id;
|
|
io->status = SPA_STATUS_HAVE_DATA;
|
|
|
|
/* Notify we have a buffer ready to be processed */
|
|
return SPA_STATUS_HAVE_DATA;
|
|
}
|
|
|
|
static int flush_packet(struct impl *this)
|
|
{
|
|
struct port *port = &this->ports[PORT_IN];
|
|
int res;
|
|
|
|
if (this->writer.size == 0)
|
|
return 0;
|
|
|
|
res = send(port->fd, this->writer.buf, this->writer.size,
|
|
MSG_DONTWAIT | MSG_NOSIGNAL);
|
|
if (res < 0)
|
|
return -errno;
|
|
|
|
spa_log_trace(this->log, "%p: send packet size:%d", this, this->writer.size);
|
|
spa_debug_log_mem(this->log, SPA_LOG_LEVEL_TRACE, 4, this->writer.buf, this->writer.size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int write_data(struct impl *this, struct spa_data *d)
|
|
{
|
|
struct port *port = &this->ports[PORT_IN];
|
|
struct spa_pod_sequence *pod;
|
|
struct spa_pod_control *c;
|
|
uint64_t time;
|
|
int res;
|
|
|
|
pod = spa_pod_from_data(d->data, d->maxsize, d->chunk->offset, d->chunk->size);
|
|
if (pod == NULL) {
|
|
spa_log_warn(this->log, "%p: invalid sequence in buffer max:%u offset:%u size:%u",
|
|
this, d->maxsize, d->chunk->offset, d->chunk->size);
|
|
return -EINVAL;
|
|
}
|
|
|
|
spa_bt_midi_writer_init(&this->writer, port->mtu);
|
|
time = 0;
|
|
|
|
SPA_POD_SEQUENCE_FOREACH(pod, c) {
|
|
uint8_t *event;
|
|
size_t size;
|
|
|
|
if (c->type != SPA_CONTROL_Midi)
|
|
continue;
|
|
|
|
time = SPA_MAX(time, this->current_time + c->offset * SPA_NSEC_PER_SEC / this->rate);
|
|
event = SPA_POD_BODY(&c->value);
|
|
size = SPA_POD_BODY_SIZE(&c->value);
|
|
|
|
spa_log_trace(this->log, "%p: output event:0x%x time:%"PRIu64, this,
|
|
(size > 0) ? event[0] : 0, time);
|
|
|
|
do {
|
|
res = spa_bt_midi_writer_write(&this->writer,
|
|
time, event, size);
|
|
if (res < 0) {
|
|
return res;
|
|
} else if (res) {
|
|
int res2;
|
|
if ((res2 = flush_packet(this)) < 0)
|
|
return res2;
|
|
}
|
|
} while (res);
|
|
}
|
|
|
|
if ((res = flush_packet(this)) < 0)
|
|
return res;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_input(struct impl *this)
|
|
{
|
|
struct port *port = &this->ports[PORT_IN];
|
|
struct buffer *b;
|
|
struct spa_io_buffers *io = port->io;
|
|
int res;
|
|
|
|
/* Check if we are able to process */
|
|
if (io == NULL || !port->acquired)
|
|
return SPA_STATUS_OK;
|
|
|
|
if (io->status != SPA_STATUS_HAVE_DATA || io->buffer_id >= port->n_buffers)
|
|
return SPA_STATUS_OK;
|
|
|
|
b = &port->buffers[io->buffer_id];
|
|
if (!b->outgoing) {
|
|
spa_log_warn(this->log, "%p: buffer %u not outgoing", this, io->buffer_id);
|
|
io->status = -EINVAL;
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((res = write_data(this, &b->buf->datas[0])) < 0) {
|
|
spa_log_info(this->log, "%p: writing data failed: %s",
|
|
this, spa_strerror(res));
|
|
}
|
|
|
|
port->io->buffer_id = b->id;
|
|
io->status = SPA_STATUS_NEED_DATA;
|
|
spa_node_call_reuse_buffer(&this->callbacks, 0, io->buffer_id);
|
|
|
|
return SPA_STATUS_HAVE_DATA;
|
|
}
|
|
|
|
static void update_position(struct impl *this)
|
|
{
|
|
if (SPA_LIKELY(this->position)) {
|
|
this->duration = this->position->clock.duration;
|
|
this->rate = this->position->clock.rate.denom;
|
|
} else {
|
|
this->duration = 1024;
|
|
this->rate = 48000;
|
|
}
|
|
}
|
|
|
|
static void on_timeout(struct spa_source *source)
|
|
{
|
|
struct impl *this = source->data;
|
|
uint64_t exp;
|
|
uint64_t prev_time, now_time;
|
|
int status;
|
|
|
|
if (!this->started)
|
|
return;
|
|
|
|
if (spa_system_timerfd_read(this->data_system, this->timerfd, &exp) < 0)
|
|
spa_log_warn(this->log, "%p: error reading timerfd: %s", this, strerror(errno));
|
|
|
|
prev_time = this->current_time;
|
|
now_time = this->current_time = this->next_time;
|
|
|
|
spa_log_trace(this->log, "%p: timer %"PRIu64" %"PRIu64"", this,
|
|
now_time, now_time - prev_time);
|
|
|
|
if (SPA_LIKELY(this->position)) {
|
|
this->duration = this->position->clock.target_duration;
|
|
this->rate = this->position->clock.target_rate.denom;
|
|
} else {
|
|
this->duration = 1024;
|
|
this->rate = 48000;
|
|
}
|
|
|
|
this->next_time = now_time + this->duration * SPA_NSEC_PER_SEC / this->rate;
|
|
|
|
if (SPA_LIKELY(this->clock)) {
|
|
this->clock->nsec = now_time;
|
|
this->clock->rate = this->clock->target_rate;
|
|
this->clock->position += this->clock->duration;
|
|
this->clock->duration = this->duration;
|
|
this->clock->rate_diff = 1.0f;
|
|
this->clock->next_nsec = this->next_time;
|
|
}
|
|
|
|
status = process_output(this);
|
|
spa_log_trace(this->log, "%p: status:%d", this, status);
|
|
|
|
spa_node_call_ready(&this->callbacks, status | SPA_STATUS_NEED_DATA);
|
|
|
|
set_timeout(this, this->next_time);
|
|
}
|
|
|
|
static int do_start(struct impl *this);
|
|
|
|
static int do_release(struct impl *this);
|
|
|
|
static int do_stop(struct impl *this);
|
|
|
|
static void acquire_reply(GObject *source_object, GAsyncResult *res, gpointer user_data, bool notify)
|
|
{
|
|
struct port *port;
|
|
struct impl *this;
|
|
const char *method;
|
|
GError *err = NULL;
|
|
GUnixFDList *fd_list = NULL;
|
|
GVariant *fd_handle = NULL;
|
|
int fd;
|
|
guint16 mtu;
|
|
|
|
if (notify) {
|
|
bluez5_gatt_characteristic1_call_acquire_notify_finish(
|
|
BLUEZ5_GATT_CHARACTERISTIC1(source_object), &fd_handle, &mtu, &fd_list, res, &err);
|
|
} else {
|
|
bluez5_gatt_characteristic1_call_acquire_write_finish(
|
|
BLUEZ5_GATT_CHARACTERISTIC1(source_object), &fd_handle, &mtu, &fd_list, res, &err);
|
|
}
|
|
|
|
if (g_error_matches(err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
|
|
/* Operation canceled: user_data may be invalid by now. */
|
|
g_error_free(err);
|
|
return;
|
|
}
|
|
|
|
port = user_data;
|
|
this = port->impl;
|
|
method = notify ? "AcquireNotify" : "AcquireWrite";
|
|
if (err) {
|
|
spa_log_error(this->log, "%s.%s() for %s failed: %s",
|
|
BLUEZ_GATT_CHR_INTERFACE, method,
|
|
this->chr_path, err->message);
|
|
goto fail;
|
|
}
|
|
|
|
fd = g_unix_fd_list_get(fd_list, g_variant_get_handle(fd_handle), &err);
|
|
if (fd < 0) {
|
|
spa_log_error(this->log, "%s.%s() for %s failed to get fd: %s",
|
|
BLUEZ_GATT_CHR_INTERFACE, method,
|
|
this->chr_path, err->message);
|
|
goto fail;
|
|
}
|
|
|
|
spa_log_info(this->log, "%p: BLE MIDI %s %s success mtu:%d",
|
|
this, this->chr_path, method, mtu);
|
|
port->fd = fd;
|
|
port->mtu = mtu;
|
|
port->acquired = true;
|
|
|
|
if (port->direction == SPA_DIRECTION_OUTPUT) {
|
|
spa_bt_midi_parser_init(&this->parser);
|
|
|
|
/* Start source */
|
|
port->source.data = port;
|
|
port->source.fd = port->fd;
|
|
port->source.func = on_ready_read;
|
|
port->source.mask = SPA_IO_IN | SPA_IO_HUP | SPA_IO_ERR;
|
|
port->source.rmask = 0;
|
|
spa_loop_add_source(this->data_loop, &port->source);
|
|
}
|
|
return;
|
|
|
|
fail:
|
|
g_error_free(err);
|
|
g_clear_object(&fd_list);
|
|
g_clear_object(&fd_handle);
|
|
do_stop(this);
|
|
do_release(this);
|
|
}
|
|
|
|
static void acquire_notify_reply(GObject *source_object, GAsyncResult *res, gpointer user_data)
|
|
{
|
|
acquire_reply(source_object, res, user_data, true);
|
|
}
|
|
|
|
static void acquire_write_reply(GObject *source_object, GAsyncResult *res, gpointer user_data)
|
|
{
|
|
acquire_reply(source_object, res, user_data, false);
|
|
}
|
|
|
|
static int do_acquire(struct port *port)
|
|
{
|
|
struct impl *this = port->impl;
|
|
const char *method = (port->direction == SPA_DIRECTION_OUTPUT) ?
|
|
"AcquireNotify" : "AcquireWrite";
|
|
GVariant *options;
|
|
GVariantBuilder builder;
|
|
|
|
if (port->acquired)
|
|
return 0;
|
|
if (port->acquire_call)
|
|
return 0;
|
|
|
|
spa_log_info(this->log,
|
|
"%p: port %d: client %s for BLE MIDI device characteristic %s",
|
|
this, port->direction, method, this->chr_path);
|
|
|
|
port->acquire_call = g_cancellable_new();
|
|
|
|
g_variant_builder_init(&builder, G_VARIANT_TYPE("a{sv}"));
|
|
options = g_variant_builder_end(&builder);
|
|
|
|
if (port->direction == SPA_DIRECTION_OUTPUT) {
|
|
bluez5_gatt_characteristic1_call_acquire_notify(
|
|
BLUEZ5_GATT_CHARACTERISTIC1(this->proxy),
|
|
options,
|
|
NULL,
|
|
port->acquire_call,
|
|
acquire_notify_reply,
|
|
port);
|
|
} else {
|
|
bluez5_gatt_characteristic1_call_acquire_write(
|
|
BLUEZ5_GATT_CHARACTERISTIC1(this->proxy),
|
|
options,
|
|
NULL,
|
|
port->acquire_call,
|
|
acquire_write_reply,
|
|
port);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int server_do_acquire(struct port *port, int fd, uint16_t mtu)
|
|
{
|
|
struct impl *this = port->impl;
|
|
const char *method = (port->direction == SPA_DIRECTION_OUTPUT) ?
|
|
"AcquireWrite" : "AcquireNotify";
|
|
|
|
spa_log_info(this->log,
|
|
"%p: port %d: server %s for BLE MIDI device characteristic %s",
|
|
this, port->direction, method, this->server->chr_path);
|
|
|
|
if (port->acquired) {
|
|
spa_log_info(this->log,
|
|
"%p: port %d: %s failed: already acquired",
|
|
this, port->direction, method);
|
|
return -EBUSY;
|
|
}
|
|
|
|
port->fd = fd;
|
|
port->mtu = mtu;
|
|
|
|
if (port->direction == SPA_DIRECTION_OUTPUT)
|
|
spa_bt_midi_parser_init(&this->parser);
|
|
|
|
/* Start source */
|
|
port->source.data = port;
|
|
port->source.fd = port->fd;
|
|
port->source.func = on_ready_read;
|
|
port->source.mask = SPA_IO_HUP | SPA_IO_ERR;
|
|
if (port->direction == SPA_DIRECTION_OUTPUT)
|
|
port->source.mask |= SPA_IO_IN;
|
|
port->source.rmask = 0;
|
|
spa_loop_add_source(this->data_loop, &port->source);
|
|
|
|
port->acquired = true;
|
|
return 0;
|
|
}
|
|
|
|
static int server_acquire_write(void *user_data, int fd, uint16_t mtu)
|
|
{
|
|
struct impl *this = user_data;
|
|
return server_do_acquire(&this->ports[PORT_OUT], fd, mtu);
|
|
}
|
|
|
|
static int server_acquire_notify(void *user_data, int fd, uint16_t mtu)
|
|
{
|
|
struct impl *this = user_data;
|
|
return server_do_acquire(&this->ports[PORT_IN], fd, mtu);
|
|
}
|
|
|
|
static int server_release(void *user_data)
|
|
{
|
|
struct impl *this = user_data;
|
|
do_release(this);
|
|
return 0;
|
|
}
|
|
|
|
static const char *server_description(void *user_data)
|
|
{
|
|
struct impl *this = user_data;
|
|
return this->props.device_name;
|
|
}
|
|
|
|
static int do_remove_port_source(struct spa_loop *loop,
|
|
bool async, uint32_t seq, const void *data, size_t size, void *user_data)
|
|
{
|
|
struct impl *this = user_data;
|
|
int i;
|
|
|
|
for (i = 0; i < N_PORTS; ++i) {
|
|
struct port *port = &this->ports[i];
|
|
|
|
if (port->source.loop)
|
|
spa_loop_remove_source(this->data_loop, &port->source);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int do_remove_source(struct spa_loop *loop,
|
|
bool async,
|
|
uint32_t seq,
|
|
const void *data,
|
|
size_t size,
|
|
void *user_data)
|
|
{
|
|
struct impl *this = user_data;
|
|
|
|
if (this->timer_source.loop)
|
|
spa_loop_remove_source(this->data_loop, &this->timer_source);
|
|
set_timeout(this, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int do_stop(struct impl *this)
|
|
{
|
|
int res = 0;
|
|
|
|
spa_log_debug(this->log, "%p: stop", this);
|
|
|
|
spa_loop_invoke(this->data_loop, do_remove_source, 0, NULL, 0, true, this);
|
|
|
|
this->started = false;
|
|
|
|
return res;
|
|
}
|
|
|
|
static int do_release(struct impl *this)
|
|
{
|
|
int res = 0;
|
|
size_t i;
|
|
|
|
spa_log_debug(this->log, "%p: release", this);
|
|
|
|
spa_loop_invoke(this->data_loop, do_remove_port_source, 0, NULL, 0, true, this);
|
|
|
|
for (i = 0; i < N_PORTS; ++i) {
|
|
struct port *port = &this->ports[i];
|
|
|
|
g_cancellable_cancel(port->acquire_call);
|
|
g_clear_object(&port->acquire_call);
|
|
|
|
unacquire_port(port);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static int do_start(struct impl *this)
|
|
{
|
|
int res;
|
|
size_t i;
|
|
|
|
if (this->started)
|
|
return 0;
|
|
|
|
this->following = is_following(this);
|
|
|
|
update_position(this);
|
|
|
|
spa_log_debug(this->log, "%p: start following:%d",
|
|
this, this->following);
|
|
|
|
for (i = 0; i < N_PORTS; ++i) {
|
|
struct port *port = &this->ports[i];
|
|
|
|
switch (this->role) {
|
|
case NODE_CLIENT:
|
|
/* Acquire Bluetooth I/O */
|
|
if ((res = do_acquire(port)) < 0) {
|
|
do_stop(this);
|
|
do_release(this);
|
|
return res;
|
|
}
|
|
break;
|
|
case NODE_SERVER:
|
|
/*
|
|
* In MIDI server role, the device/BlueZ invokes
|
|
* the acquire asynchronously as available/needed.
|
|
*/
|
|
break;
|
|
default:
|
|
spa_assert_not_reached();
|
|
}
|
|
|
|
reset_buffers(port);
|
|
}
|
|
|
|
midi_event_ringbuffer_init(&this->event_rbuf);
|
|
|
|
this->started = true;
|
|
|
|
/* Start timer */
|
|
this->timer_source.data = this;
|
|
this->timer_source.fd = this->timerfd;
|
|
this->timer_source.func = on_timeout;
|
|
this->timer_source.mask = SPA_IO_IN;
|
|
this->timer_source.rmask = 0;
|
|
spa_loop_add_source(this->data_loop, &this->timer_source);
|
|
|
|
set_timers(this);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int do_reassign_follower(struct spa_loop *loop,
|
|
bool async,
|
|
uint32_t seq,
|
|
const void *data,
|
|
size_t size,
|
|
void *user_data)
|
|
{
|
|
struct impl *this = user_data;
|
|
set_timers(this);
|
|
return 0;
|
|
}
|
|
|
|
static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size)
|
|
{
|
|
struct impl *this = object;
|
|
bool following;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
switch (id) {
|
|
case SPA_IO_Clock:
|
|
this->clock = data;
|
|
if (this->clock != NULL) {
|
|
spa_scnprintf(this->clock->name,
|
|
sizeof(this->clock->name),
|
|
"%s", this->props.clock_name);
|
|
}
|
|
break;
|
|
case SPA_IO_Position:
|
|
this->position = data;
|
|
break;
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
following = is_following(this);
|
|
if (this->started && following != this->following) {
|
|
spa_log_debug(this->log, "%p: reassign follower %d->%d", this, this->following, following);
|
|
this->following = following;
|
|
spa_loop_invoke(this->data_loop, do_reassign_follower, 0, NULL, 0, true, this);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void emit_node_info(struct impl *this, bool full);
|
|
|
|
static int impl_node_enum_params(void *object, int seq,
|
|
uint32_t id, uint32_t start, uint32_t num,
|
|
const struct spa_pod *filter)
|
|
{
|
|
struct impl *this = object;
|
|
struct spa_pod *param;
|
|
struct spa_pod_builder b = { 0 };
|
|
uint8_t buffer[1024];
|
|
struct spa_result_node_params result;
|
|
uint32_t count = 0;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
spa_return_val_if_fail(num != 0, -EINVAL);
|
|
|
|
result.id = id;
|
|
result.next = start;
|
|
next:
|
|
result.index = result.next++;
|
|
|
|
spa_pod_builder_init(&b, buffer, sizeof(buffer));
|
|
|
|
switch (id) {
|
|
case SPA_PARAM_PropInfo:
|
|
{
|
|
struct props *p = &this->props;
|
|
|
|
switch (result.index) {
|
|
case 0:
|
|
param = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_PropInfo, id,
|
|
SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_latencyOffsetNsec),
|
|
SPA_PROP_INFO_description, SPA_POD_String("Latency offset (ns)"),
|
|
SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Long(0LL, INT64_MIN, INT64_MAX));
|
|
break;
|
|
case 1:
|
|
param = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_PropInfo, id,
|
|
SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_deviceName),
|
|
SPA_PROP_INFO_description, SPA_POD_String("Device name"),
|
|
SPA_PROP_INFO_type, SPA_POD_String(p->device_name));
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
break;
|
|
}
|
|
case SPA_PARAM_Props:
|
|
{
|
|
struct props *p = &this->props;
|
|
|
|
switch (result.index) {
|
|
case 0:
|
|
param = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_Props, id,
|
|
SPA_PROP_latencyOffsetNsec, SPA_POD_Long(p->latency_offset),
|
|
SPA_PROP_deviceName, SPA_POD_String(p->device_name));
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (spa_pod_filter(&b, &result.param, param, filter) < 0)
|
|
goto next;
|
|
|
|
spa_node_emit_result(&this->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result);
|
|
|
|
if (++count != num)
|
|
goto next;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void emit_port_info(struct impl *this, struct port *port, bool full);
|
|
|
|
static void set_latency(struct impl *this, bool emit_latency)
|
|
{
|
|
struct port *port = &this->ports[PORT_OUT];
|
|
|
|
port->latency.min_ns = port->latency.max_ns = this->props.latency_offset;
|
|
|
|
if (emit_latency) {
|
|
port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
|
|
port->params[IDX_Latency].flags ^= SPA_PARAM_INFO_SERIAL;
|
|
emit_port_info(this, port, false);
|
|
}
|
|
}
|
|
|
|
static int apply_props(struct impl *this, const struct spa_pod *param)
|
|
{
|
|
struct props new_props = this->props;
|
|
int changed = 0;
|
|
|
|
if (param == NULL) {
|
|
reset_props(&new_props);
|
|
} else {
|
|
spa_pod_parse_object(param,
|
|
SPA_TYPE_OBJECT_Props, NULL,
|
|
SPA_PROP_latencyOffsetNsec, SPA_POD_OPT_Long(&new_props.latency_offset),
|
|
SPA_PROP_deviceName, SPA_POD_OPT_Stringn(new_props.device_name,
|
|
sizeof(new_props.device_name)));
|
|
}
|
|
|
|
changed = (memcmp(&new_props, &this->props, sizeof(struct props)) != 0);
|
|
this->props = new_props;
|
|
|
|
if (changed)
|
|
set_latency(this, true);
|
|
|
|
return changed;
|
|
}
|
|
|
|
static int impl_node_set_param(void *object, uint32_t id, uint32_t flags,
|
|
const struct spa_pod *param)
|
|
{
|
|
struct impl *this = object;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
switch (id) {
|
|
case SPA_PARAM_Props:
|
|
{
|
|
if (apply_props(this, param) > 0) {
|
|
this->info.change_mask |= SPA_NODE_CHANGE_MASK_PARAMS;
|
|
this->params[IDX_Props].flags ^= SPA_PARAM_INFO_SERIAL;
|
|
emit_node_info(this, false);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int impl_node_send_command(void *object, const struct spa_command *command)
|
|
{
|
|
struct impl *this = object;
|
|
int res, res2;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
spa_return_val_if_fail(command != NULL, -EINVAL);
|
|
|
|
switch (SPA_NODE_COMMAND_ID(command)) {
|
|
case SPA_NODE_COMMAND_Start:
|
|
if ((res = do_start(this)) < 0)
|
|
return res;
|
|
break;
|
|
case SPA_NODE_COMMAND_Pause:
|
|
if ((res = do_stop(this)) < 0)
|
|
return res;
|
|
break;
|
|
case SPA_NODE_COMMAND_Suspend:
|
|
res = do_stop(this);
|
|
if (this->role == NODE_CLIENT)
|
|
res2 = do_release(this);
|
|
else
|
|
res2 = 0;
|
|
if (res < 0)
|
|
return res;
|
|
if (res2 < 0)
|
|
return res2;
|
|
break;
|
|
default:
|
|
return -ENOTSUP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void emit_node_info(struct impl *this, bool full)
|
|
{
|
|
const struct spa_dict_item node_info_items[] = {
|
|
{ SPA_KEY_DEVICE_API, "bluez5" },
|
|
{ SPA_KEY_MEDIA_CLASS, "Midi/Bridge" },
|
|
};
|
|
uint64_t old = full ? this->info.change_mask : 0;
|
|
|
|
if (full)
|
|
this->info.change_mask = this->info_all;
|
|
if (this->info.change_mask) {
|
|
this->info.props = &SPA_DICT_INIT_ARRAY(node_info_items);
|
|
spa_node_emit_info(&this->hooks, &this->info);
|
|
this->info.change_mask = old;
|
|
}
|
|
}
|
|
|
|
static void emit_port_info(struct impl *this, struct port *port, bool full)
|
|
{
|
|
uint64_t old = full ? port->info.change_mask : 0;
|
|
if (full)
|
|
port->info.change_mask = port->info_all;
|
|
if (port->info.change_mask) {
|
|
spa_node_emit_port_info(&this->hooks, port->direction, port->id, &port->info);
|
|
port->info.change_mask = old;
|
|
}
|
|
}
|
|
|
|
static int
|
|
impl_node_add_listener(void *object,
|
|
struct spa_hook *listener,
|
|
const struct spa_node_events *events,
|
|
void *data)
|
|
{
|
|
struct impl *this = object;
|
|
struct spa_hook_list save;
|
|
size_t i;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
spa_hook_list_isolate(&this->hooks, &save, listener, events, data);
|
|
|
|
emit_node_info(this, true);
|
|
|
|
for (i = 0; i < N_PORTS; ++i)
|
|
emit_port_info(this, &this->ports[i], true);
|
|
|
|
spa_hook_list_join(&this->hooks, &save);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
impl_node_set_callbacks(void *object,
|
|
const struct spa_node_callbacks *callbacks,
|
|
void *data)
|
|
{
|
|
struct impl *this = object;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
this->callbacks = SPA_CALLBACKS_INIT(callbacks, data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int impl_node_sync(void *object, int seq)
|
|
{
|
|
struct impl *this = object;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
spa_node_emit_result(&this->hooks, seq, 0, 0, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int impl_node_add_port(void *object, enum spa_direction direction, uint32_t port_id,
|
|
const struct spa_dict *props)
|
|
{
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
static int impl_node_remove_port(void *object, enum spa_direction direction, uint32_t port_id)
|
|
{
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
static int
|
|
impl_node_port_enum_params(void *object, int seq,
|
|
enum spa_direction direction, uint32_t port_id,
|
|
uint32_t id, uint32_t start, uint32_t num,
|
|
const struct spa_pod *filter)
|
|
{
|
|
|
|
struct impl *this = object;
|
|
struct port *port;
|
|
struct spa_pod *param;
|
|
struct spa_pod_builder b = { 0 };
|
|
uint8_t buffer[1024];
|
|
struct spa_result_node_params result;
|
|
uint32_t count = 0;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
spa_return_val_if_fail(num != 0, -EINVAL);
|
|
|
|
spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
|
|
|
|
port = GET_PORT(this, direction, port_id);
|
|
|
|
result.id = id;
|
|
result.next = start;
|
|
next:
|
|
result.index = result.next++;
|
|
|
|
spa_pod_builder_init(&b, buffer, sizeof(buffer));
|
|
|
|
switch (id) {
|
|
case SPA_PARAM_EnumFormat:
|
|
if (result.index > 0)
|
|
return 0;
|
|
|
|
param = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
|
|
SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_application),
|
|
SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_control));
|
|
break;
|
|
|
|
case SPA_PARAM_Format:
|
|
if (!port->have_format)
|
|
return -EIO;
|
|
if (result.index > 0)
|
|
return 0;
|
|
|
|
param = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_Format, SPA_PARAM_Format,
|
|
SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_application),
|
|
SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_control));
|
|
break;
|
|
|
|
case SPA_PARAM_Buffers:
|
|
if (!port->have_format)
|
|
return -EIO;
|
|
if (result.index > 0)
|
|
return 0;
|
|
|
|
param = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_ParamBuffers, id,
|
|
SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(2, 1, MAX_BUFFERS),
|
|
SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(1),
|
|
SPA_PARAM_BUFFERS_size, SPA_POD_CHOICE_RANGE_Int(
|
|
4096, 4096, INT32_MAX),
|
|
SPA_PARAM_BUFFERS_stride, SPA_POD_Int(1));
|
|
break;
|
|
|
|
case SPA_PARAM_Meta:
|
|
switch (result.index) {
|
|
case 0:
|
|
param = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_ParamMeta, id,
|
|
SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Header),
|
|
SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_header)));
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
break;
|
|
|
|
case SPA_PARAM_IO:
|
|
switch (result.index) {
|
|
case 0:
|
|
param = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_ParamIO, id,
|
|
SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Buffers),
|
|
SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_buffers)));
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
break;
|
|
|
|
case SPA_PARAM_Latency:
|
|
switch (result.index) {
|
|
case 0:
|
|
param = spa_latency_build(&b, id, &port->latency);
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (spa_pod_filter(&b, &result.param, param, filter) < 0)
|
|
goto next;
|
|
|
|
spa_node_emit_result(&this->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result);
|
|
|
|
if (++count != num)
|
|
goto next;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int port_set_format(struct impl *this, struct port *port,
|
|
uint32_t flags,
|
|
const struct spa_pod *format)
|
|
{
|
|
int err;
|
|
|
|
if (format == NULL) {
|
|
if (!port->have_format)
|
|
return 0;
|
|
|
|
clear_buffers(this, port);
|
|
port->have_format = false;
|
|
} else {
|
|
struct spa_audio_info info = { 0 };
|
|
|
|
if ((err = spa_format_parse(format, &info.media_type, &info.media_subtype)) < 0)
|
|
return err;
|
|
|
|
if (info.media_type != SPA_MEDIA_TYPE_application ||
|
|
info.media_subtype != SPA_MEDIA_SUBTYPE_control)
|
|
return -EINVAL;
|
|
|
|
port->current_format = info;
|
|
port->have_format = true;
|
|
}
|
|
|
|
port->info.change_mask |= SPA_PORT_CHANGE_MASK_RATE;
|
|
port->info.rate = SPA_FRACTION(1, 1);
|
|
port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
|
|
if (port->have_format) {
|
|
port->params[IDX_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE);
|
|
port->params[IDX_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, SPA_PARAM_INFO_READ);
|
|
} else {
|
|
port->params[IDX_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
|
|
port->params[IDX_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
|
|
}
|
|
emit_port_info(this, port, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
impl_node_port_set_param(void *object,
|
|
enum spa_direction direction, uint32_t port_id,
|
|
uint32_t id, uint32_t flags,
|
|
const struct spa_pod *param)
|
|
{
|
|
struct impl *this = object;
|
|
struct port *port;
|
|
int res;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
|
|
|
|
port = GET_PORT(this, direction, port_id);
|
|
|
|
switch (id) {
|
|
case SPA_PARAM_Format:
|
|
res = port_set_format(this, port, flags, param);
|
|
break;
|
|
case SPA_PARAM_Latency:
|
|
res = 0;
|
|
break;
|
|
default:
|
|
res = -ENOENT;
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static int
|
|
impl_node_port_use_buffers(void *object,
|
|
enum spa_direction direction, uint32_t port_id,
|
|
uint32_t flags,
|
|
struct spa_buffer **buffers, uint32_t n_buffers)
|
|
{
|
|
struct impl *this = object;
|
|
struct port *port;
|
|
uint32_t i;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
|
|
|
|
port = GET_PORT(this, direction, port_id);
|
|
|
|
spa_log_debug(this->log, "%p: use buffers %d", this, n_buffers);
|
|
|
|
if (!port->have_format)
|
|
return -EIO;
|
|
|
|
clear_buffers(this, port);
|
|
|
|
for (i = 0; i < n_buffers; i++) {
|
|
struct buffer *b = &port->buffers[i];
|
|
struct spa_data *d = buffers[i]->datas;
|
|
|
|
b->buf = buffers[i];
|
|
b->id = i;
|
|
|
|
b->h = spa_buffer_find_meta_data(buffers[i], SPA_META_Header, sizeof(*b->h));
|
|
|
|
if (d[0].data == NULL) {
|
|
spa_log_error(this->log, "%p: need mapped memory", this);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
port->n_buffers = n_buffers;
|
|
|
|
reset_buffers(port);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
impl_node_port_set_io(void *object,
|
|
enum spa_direction direction,
|
|
uint32_t port_id,
|
|
uint32_t id,
|
|
void *data, size_t size)
|
|
{
|
|
struct impl *this = object;
|
|
struct port *port;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
|
|
|
|
port = GET_PORT(this, direction, port_id);
|
|
|
|
switch (id) {
|
|
case SPA_IO_Buffers:
|
|
port->io = data;
|
|
break;
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int impl_node_port_reuse_buffer(void *object, uint32_t port_id, uint32_t buffer_id)
|
|
{
|
|
struct impl *this = object;
|
|
struct port *port;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
spa_return_val_if_fail(CHECK_PORT(this, SPA_DIRECTION_OUTPUT, port_id), -EINVAL);
|
|
|
|
port = GET_PORT(this, SPA_DIRECTION_OUTPUT, port_id);
|
|
|
|
if (port->n_buffers == 0)
|
|
return -EIO;
|
|
|
|
if (buffer_id >= port->n_buffers)
|
|
return -EINVAL;
|
|
|
|
recycle_buffer(this, port, buffer_id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int impl_node_process(void *object)
|
|
{
|
|
struct impl *this = object;
|
|
int status = SPA_STATUS_OK;
|
|
|
|
spa_return_val_if_fail(this != NULL, -EINVAL);
|
|
|
|
if (!this->started)
|
|
return SPA_STATUS_OK;
|
|
|
|
if (this->following) {
|
|
if (this->position) {
|
|
this->current_time = this->position->clock.nsec;
|
|
} else {
|
|
struct timespec now = { 0 };
|
|
spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &now);
|
|
this->current_time = SPA_TIMESPEC_TO_NSEC(&now);
|
|
}
|
|
}
|
|
|
|
update_position(this);
|
|
|
|
if (this->following)
|
|
status |= process_output(this);
|
|
|
|
status |= process_input(this);
|
|
|
|
return status;
|
|
}
|
|
|
|
static const struct spa_node_methods impl_node = {
|
|
SPA_VERSION_NODE_METHODS,
|
|
.add_listener = impl_node_add_listener,
|
|
.set_callbacks = impl_node_set_callbacks,
|
|
.sync = impl_node_sync,
|
|
.enum_params = impl_node_enum_params,
|
|
.set_param = impl_node_set_param,
|
|
.set_io = impl_node_set_io,
|
|
.send_command = impl_node_send_command,
|
|
.add_port = impl_node_add_port,
|
|
.remove_port = impl_node_remove_port,
|
|
.port_enum_params = impl_node_port_enum_params,
|
|
.port_set_param = impl_node_port_set_param,
|
|
.port_use_buffers = impl_node_port_use_buffers,
|
|
.port_set_io = impl_node_port_set_io,
|
|
.port_reuse_buffer = impl_node_port_reuse_buffer,
|
|
.process = impl_node_process,
|
|
};
|
|
|
|
static const struct spa_bt_midi_server_cb impl_server = {
|
|
.acquire_write = server_acquire_write,
|
|
.acquire_notify = server_acquire_notify,
|
|
.release = server_release,
|
|
.get_description = server_description,
|
|
};
|
|
|
|
static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface)
|
|
{
|
|
struct impl *this;
|
|
|
|
spa_return_val_if_fail(handle != NULL, -EINVAL);
|
|
spa_return_val_if_fail(interface != NULL, -EINVAL);
|
|
|
|
this = (struct impl *) handle;
|
|
|
|
if (spa_streq(type, SPA_TYPE_INTERFACE_Node))
|
|
*interface = &this->node;
|
|
else
|
|
return -ENOENT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int impl_clear(struct spa_handle *handle)
|
|
{
|
|
struct impl *this = (struct impl *) handle;
|
|
|
|
do_stop(this);
|
|
do_release(this);
|
|
|
|
free(this->chr_path);
|
|
if (this->timerfd > 0)
|
|
spa_system_close(this->data_system, this->timerfd);
|
|
if (this->server)
|
|
spa_bt_midi_server_destroy(this->server);
|
|
g_clear_object(&this->proxy);
|
|
g_clear_object(&this->conn);
|
|
|
|
spa_zero(*this);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static size_t
|
|
impl_get_size(const struct spa_handle_factory *factory,
|
|
const struct spa_dict *params)
|
|
{
|
|
return sizeof(struct impl);
|
|
}
|
|
|
|
static int
|
|
impl_init(const struct spa_handle_factory *factory,
|
|
struct spa_handle *handle,
|
|
const struct spa_dict *info,
|
|
const struct spa_support *support,
|
|
uint32_t n_support)
|
|
{
|
|
struct impl *this;
|
|
const char *device_name = "";
|
|
int res = 0;
|
|
GError *err = NULL;
|
|
size_t i;
|
|
|
|
spa_return_val_if_fail(factory != NULL, -EINVAL);
|
|
spa_return_val_if_fail(handle != NULL, -EINVAL);
|
|
|
|
handle->get_interface = impl_get_interface;
|
|
handle->clear = impl_clear;
|
|
|
|
this = (struct impl *) handle;
|
|
|
|
this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log);
|
|
this->main_loop = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Loop);
|
|
this->data_loop = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_DataLoop);
|
|
this->data_system = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_DataSystem);
|
|
|
|
if (this->log == NULL)
|
|
return -EINVAL;
|
|
|
|
spa_log_topic_init(this->log, &log_topic);
|
|
|
|
if (!(info && spa_atob(spa_dict_lookup(info, SPA_KEY_API_GLIB_MAINLOOP)))) {
|
|
spa_log_error(this->log, "Glib mainloop is not usable: %s not set",
|
|
SPA_KEY_API_GLIB_MAINLOOP);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (this->data_loop == NULL) {
|
|
spa_log_error(this->log, "a data loop is needed");
|
|
return -EINVAL;
|
|
}
|
|
if (this->data_system == NULL) {
|
|
spa_log_error(this->log, "a data system is needed");
|
|
return -EINVAL;
|
|
}
|
|
|
|
this->role = NODE_CLIENT;
|
|
|
|
if (info) {
|
|
const char *str;
|
|
|
|
if ((str = spa_dict_lookup(info, SPA_KEY_API_BLUEZ5_PATH)) != NULL)
|
|
this->chr_path = strdup(str);
|
|
|
|
if ((str = spa_dict_lookup(info, SPA_KEY_API_BLUEZ5_ROLE)) != NULL) {
|
|
if (spa_streq(str, "server"))
|
|
this->role = NODE_SERVER;
|
|
}
|
|
|
|
if ((str = spa_dict_lookup(info, "node.nick")) != NULL)
|
|
device_name = str;
|
|
else if ((str = spa_dict_lookup(info, "node.description")) != NULL)
|
|
device_name = str;
|
|
}
|
|
|
|
if (this->role == NODE_CLIENT && this->chr_path == NULL) {
|
|
spa_log_error(this->log, "missing MIDI service characteristic path");
|
|
res = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
this->conn = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, &err);
|
|
if (this->conn == NULL) {
|
|
spa_log_error(this->log, "failed to get dbus connection: %s",
|
|
err->message);
|
|
g_error_free(err);
|
|
res = -EIO;
|
|
goto fail;
|
|
}
|
|
|
|
this->node.iface = SPA_INTERFACE_INIT(
|
|
SPA_TYPE_INTERFACE_Node,
|
|
SPA_VERSION_NODE,
|
|
&impl_node, this);
|
|
spa_hook_list_init(&this->hooks);
|
|
|
|
reset_props(&this->props);
|
|
|
|
spa_scnprintf(this->props.device_name, sizeof(this->props.device_name),
|
|
"%s", device_name);
|
|
|
|
/* set the node info */
|
|
this->info_all = SPA_NODE_CHANGE_MASK_FLAGS |
|
|
SPA_NODE_CHANGE_MASK_PROPS |
|
|
SPA_NODE_CHANGE_MASK_PARAMS;
|
|
this->info = SPA_NODE_INFO_INIT();
|
|
this->info.max_input_ports = 1;
|
|
this->info.max_output_ports = 1;
|
|
this->info.flags = SPA_NODE_FLAG_RT;
|
|
this->params[IDX_PropInfo] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ);
|
|
this->params[IDX_Props] = SPA_PARAM_INFO(SPA_PARAM_Props, SPA_PARAM_INFO_READWRITE);
|
|
this->params[IDX_NODE_IO] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
|
|
this->info.params = this->params;
|
|
this->info.n_params = N_NODE_PARAMS;
|
|
|
|
/* set the port info */
|
|
for (i = 0; i < N_PORTS; ++i) {
|
|
struct port *port = &this->ports[i];
|
|
static const struct spa_dict_item in_port_items[] = {
|
|
SPA_DICT_ITEM_INIT(SPA_KEY_FORMAT_DSP, "8 bit raw midi"),
|
|
SPA_DICT_ITEM_INIT(SPA_KEY_PORT_NAME, "in"),
|
|
SPA_DICT_ITEM_INIT(SPA_KEY_PORT_ALIAS, "in"),
|
|
};
|
|
static const struct spa_dict_item out_port_items[] = {
|
|
SPA_DICT_ITEM_INIT(SPA_KEY_FORMAT_DSP, "8 bit raw midi"),
|
|
SPA_DICT_ITEM_INIT(SPA_KEY_PORT_NAME, "out"),
|
|
SPA_DICT_ITEM_INIT(SPA_KEY_PORT_ALIAS, "out"),
|
|
};
|
|
static const struct spa_dict in_port_props = SPA_DICT_INIT_ARRAY(in_port_items);
|
|
static const struct spa_dict out_port_props = SPA_DICT_INIT_ARRAY(out_port_items);
|
|
|
|
spa_zero(*port);
|
|
|
|
port->impl = this;
|
|
|
|
port->id = 0;
|
|
port->direction = (i == PORT_OUT) ? SPA_DIRECTION_OUTPUT :
|
|
SPA_DIRECTION_INPUT;
|
|
|
|
port->info_all = SPA_PORT_CHANGE_MASK_FLAGS |
|
|
SPA_PORT_CHANGE_MASK_PROPS |
|
|
SPA_PORT_CHANGE_MASK_PARAMS;
|
|
port->info = SPA_PORT_INFO_INIT();
|
|
port->info.change_mask = SPA_PORT_CHANGE_MASK_FLAGS;
|
|
port->info.flags = SPA_PORT_FLAG_LIVE |
|
|
SPA_PORT_FLAG_PHYSICAL |
|
|
SPA_PORT_FLAG_TERMINAL;
|
|
port->params[IDX_EnumFormat] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
|
|
port->params[IDX_Meta] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ);
|
|
port->params[IDX_IO] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
|
|
port->params[IDX_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
|
|
port->params[IDX_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
|
|
port->params[IDX_Latency] = SPA_PARAM_INFO(SPA_PARAM_Latency, SPA_PARAM_INFO_READWRITE);
|
|
port->info.params = port->params;
|
|
port->info.n_params = N_PORT_PARAMS;
|
|
port->info.props = (i == PORT_OUT) ? &out_port_props : &in_port_props;
|
|
|
|
port->latency = SPA_LATENCY_INFO(port->direction);
|
|
port->latency.min_quantum = 1.0f;
|
|
port->latency.max_quantum = 1.0f;
|
|
|
|
/* Init the buffer lists */
|
|
spa_list_init(&port->ready);
|
|
spa_list_init(&port->free);
|
|
}
|
|
|
|
this->duration = 1024;
|
|
this->rate = 48000;
|
|
|
|
set_latency(this, false);
|
|
|
|
if (this->role == NODE_SERVER) {
|
|
this->server = spa_bt_midi_server_new(&impl_server, this->conn, this->log, this);
|
|
if (this->server == NULL)
|
|
goto fail;
|
|
} else {
|
|
this->proxy = bluez5_gatt_characteristic1_proxy_new_sync(this->conn,
|
|
G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
|
|
BLUEZ_SERVICE,
|
|
this->chr_path,
|
|
NULL,
|
|
&err);
|
|
if (this->proxy == NULL) {
|
|
spa_log_error(this->log,
|
|
"Failed to create BLE MIDI GATT proxy %s: %s",
|
|
this->chr_path, err->message);
|
|
g_error_free(err);
|
|
res = -EIO;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
this->timerfd = spa_system_timerfd_create(this->data_system,
|
|
CLOCK_MONOTONIC, SPA_FD_CLOEXEC | SPA_FD_NONBLOCK);
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
res = (res < 0) ? res : ((errno > 0) ? -errno : -EIO);
|
|
impl_clear(handle);
|
|
return res;
|
|
}
|
|
|
|
static const struct spa_interface_info impl_interfaces[] = {
|
|
{SPA_TYPE_INTERFACE_Node,},
|
|
};
|
|
|
|
static int
|
|
impl_enum_interface_info(const struct spa_handle_factory *factory,
|
|
const struct spa_interface_info **info, uint32_t *index)
|
|
{
|
|
spa_return_val_if_fail(factory != NULL, -EINVAL);
|
|
spa_return_val_if_fail(info != NULL, -EINVAL);
|
|
spa_return_val_if_fail(index != NULL, -EINVAL);
|
|
|
|
switch (*index) {
|
|
case 0:
|
|
*info = &impl_interfaces[*index];
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
(*index)++;
|
|
return 1;
|
|
}
|
|
|
|
static const struct spa_dict_item info_items[] = {
|
|
{ SPA_KEY_FACTORY_AUTHOR, "Pauli Virtanen <pav@iki.fi>" },
|
|
{ SPA_KEY_FACTORY_DESCRIPTION, "Bluez5 MIDI connection" },
|
|
};
|
|
|
|
static const struct spa_dict info = SPA_DICT_INIT_ARRAY(info_items);
|
|
|
|
const struct spa_handle_factory spa_bluez5_midi_node_factory = {
|
|
SPA_VERSION_HANDLE_FACTORY,
|
|
SPA_NAME_API_BLUEZ5_MIDI_NODE,
|
|
&info,
|
|
impl_get_size,
|
|
impl_init,
|
|
impl_enum_interface_info,
|
|
};
|