diff options
Diffstat (limited to '')
| -rw-r--r-- | spa/plugins/bluez5/media-sink.c | 1868 |
1 files changed, 1868 insertions, 0 deletions
diff --git a/spa/plugins/bluez5/media-sink.c b/spa/plugins/bluez5/media-sink.c new file mode 100644 index 0000000..29eec1f --- /dev/null +++ b/spa/plugins/bluez5/media-sink.c @@ -0,0 +1,1868 @@ +/* Spa Media Sink + * + * Copyright © 2018 Wim Taymans + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include <unistd.h> +#include <stddef.h> +#include <stdio.h> +#include <arpa/inet.h> +#include <sys/ioctl.h> + +#include <spa/support/plugin.h> +#include <spa/support/loop.h> +#include <spa/support/log.h> +#include <spa/support/system.h> +#include <spa/utils/list.h> +#include <spa/utils/keys.h> +#include <spa/utils/names.h> +#include <spa/utils/result.h> +#include <spa/utils/string.h> +#include <spa/monitor/device.h> + +#include <spa/node/node.h> +#include <spa/node/utils.h> +#include <spa/node/io.h> +#include <spa/node/keys.h> +#include <spa/param/param.h> +#include <spa/param/latency-utils.h> +#include <spa/param/audio/format.h> +#include <spa/param/audio/format-utils.h> +#include <spa/pod/filter.h> +#include <spa/debug/mem.h> +#include <spa/debug/log.h> + +#include <sbc/sbc.h> + +#include "defs.h" +#include "rtp.h" +#include "media-codecs.h" + +static struct spa_log_topic log_topic = SPA_LOG_TOPIC(0, "spa.bluez5.sink.media"); +#undef SPA_LOG_TOPIC_DEFAULT +#define SPA_LOG_TOPIC_DEFAULT &log_topic + +#define DEFAULT_CLOCK_NAME "clock.system.monotonic" + +struct props { + int64_t latency_offset; + char clock_name[64]; +}; + +#define FILL_FRAMES 4 +#define MIN_BUFFERS 2 +#define MAX_BUFFERS 32 +#define BUFFER_SIZE (8192*8) + +struct buffer { + uint32_t id; +#define BUFFER_FLAG_OUT (1<<0) + uint32_t flags; + struct spa_buffer *buf; + struct spa_meta_header *h; + struct spa_list link; +}; + +struct port { + struct spa_audio_info current_format; + uint32_t frame_size; + unsigned int have_format:1; + + uint64_t info_all; + struct spa_port_info info; + struct spa_io_buffers *io; + struct spa_latency_info latency; +#define IDX_EnumFormat 0 +#define IDX_Meta 1 +#define IDX_IO 2 +#define IDX_Format 3 +#define IDX_Buffers 4 +#define IDX_Latency 5 +#define N_PORT_PARAMS 6 + struct spa_param_info params[N_PORT_PARAMS]; + + struct buffer buffers[MAX_BUFFERS]; + uint32_t n_buffers; + + struct spa_list free; + struct spa_list ready; + + size_t ready_offset; +}; + +struct impl { + struct spa_handle handle; + struct spa_node node; + + struct spa_log *log; + struct spa_loop *data_loop; + struct spa_system *data_system; + + struct spa_hook_list hooks; + struct spa_callbacks callbacks; + + uint32_t quantum_limit; + + uint64_t info_all; + struct spa_node_info info; +#define IDX_PropInfo 0 +#define IDX_Props 1 +#define N_NODE_PARAMS 2 + struct spa_param_info params[N_NODE_PARAMS]; + struct props props; + + struct spa_bt_transport *transport; + struct spa_hook transport_listener; + + struct port port; + + unsigned int started:1; + unsigned int following:1; + unsigned int is_output:1; + unsigned int flush_pending:1; + + unsigned int is_duplex:1; + + struct spa_source source; + int timerfd; + struct spa_source flush_source; + struct spa_source flush_timer_source; + int flush_timerfd; + + struct spa_io_clock *clock; + struct spa_io_position *position; + + uint64_t current_time; + uint64_t next_time; + uint64_t last_error; + uint64_t process_time; + + uint64_t prev_flush_time; + uint64_t next_flush_time; + + const struct media_codec *codec; + bool codec_props_changed; + void *codec_props; + void *codec_data; + struct spa_audio_info codec_format; + + int need_flush; + bool fragment; + uint32_t block_size; + uint8_t buffer[BUFFER_SIZE]; + uint32_t buffer_used; + uint32_t header_size; + uint32_t block_count; + uint16_t seqnum; + uint32_t timestamp; + uint64_t sample_count; + uint8_t tmp_buffer[BUFFER_SIZE]; + uint32_t tmp_buffer_used; + uint32_t fd_buffer_size; +}; + +#define CHECK_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) == 0) + +static void reset_props(struct impl *this, struct props *props) +{ + props->latency_offset = 0; + strncpy(props->clock_name, DEFAULT_CLOCK_NAME, sizeof(props->clock_name)); +} + +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, index_offset = 0; + bool enum_codec = false; + + 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: + { + 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; + default: + enum_codec = true; + index_offset = 1; + } + 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)); + break; + default: + enum_codec = true; + index_offset = 1; + } + break; + } + default: + return -ENOENT; + } + + if (enum_codec) { + int res; + if (this->codec->enum_props == NULL || this->codec_props == NULL || + this->transport == NULL) + return 0; + else if ((res = this->codec->enum_props(this->codec_props, + this->transport->device->settings, + id, result.index - index_offset, &b, ¶m)) != 1) + return res; + } + + 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 set_timeout(struct impl *this, uint64_t time) +{ + struct itimerspec ts; + ts.it_value.tv_sec = time / SPA_NSEC_PER_SEC; + ts.it_value.tv_nsec = time % SPA_NSEC_PER_SEC; + ts.it_interval.tv_sec = 0; + ts.it_interval.tv_nsec = 0; + return spa_system_timerfd_settime(this->data_system, + this->timerfd, SPA_FD_TIMER_ABSTIME, &ts, NULL); +} + +static int set_timers(struct impl *this) +{ + struct timespec now; + + spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &now); + this->next_time = SPA_TIMESPEC_TO_NSEC(&now); + + return set_timeout(this, this->following ? 0 : this->next_time); +} + +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 inline bool is_following(struct impl *this) +{ + return this->position && this->clock && this->position->clock.id != this->clock->id; +} + +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 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->port; + int64_t delay; + + if (this->transport == NULL) + return; + + delay = spa_bt_transport_get_delay_nsec(this->transport); + delay += SPA_CLAMP(this->props.latency_offset, -delay, INT64_MAX / 2); + port->latency.min_ns = port->latency.max_ns = delay; + + 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(this, &new_props); + } else { + spa_pod_parse_object(param, + SPA_TYPE_OBJECT_Props, NULL, + SPA_PROP_latencyOffsetNsec, SPA_POD_OPT_Long(&new_props.latency_offset)); + } + + 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: + { + int res, codec_res = 0; + res = apply_props(this, param); + if (this->codec_props && this->codec->set_props) { + codec_res = this->codec->set_props(this->codec_props, param); + if (codec_res > 0) + this->codec_props_changed = true; + } + if (res > 0 || codec_res > 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 reset_buffer(struct impl *this) +{ + if (this->codec_props_changed && this->codec_props + && this->codec->update_props) { + this->codec->update_props(this->codec_data, this->codec_props); + this->codec_props_changed = false; + } + this->need_flush = 0; + this->block_count = 0; + this->fragment = false; + this->buffer_used = this->codec->start_encode(this->codec_data, + this->buffer, sizeof(this->buffer), + this->seqnum++, this->timestamp); + this->header_size = this->buffer_used; + this->timestamp = this->sample_count; + return 0; +} + +static int get_transport_unused_size(struct impl *this) +{ + int res, value; + res = ioctl(this->flush_source.fd, TIOCOUTQ, &value); + if (res < 0) { + spa_log_error(this->log, "%p: ioctl fail: %m", this); + return -errno; + } + spa_log_trace(this->log, "%p: fd unused buffer size:%d/%d", this, value, this->fd_buffer_size); + return value; +} + +static int send_buffer(struct impl *this) +{ + int written, unsent; + + unsent = get_transport_unused_size(this); + if (unsent >= 0) { + unsent = this->fd_buffer_size - unsent; + this->codec->abr_process(this->codec_data, unsent); + } + + written = send(this->flush_source.fd, this->buffer, + this->buffer_used, MSG_DONTWAIT | MSG_NOSIGNAL); + + if (SPA_UNLIKELY(spa_log_level_topic_enabled(this->log, SPA_LOG_TOPIC_DEFAULT, SPA_LOG_LEVEL_TRACE))) { + struct timespec ts; + uint64_t now; + uint64_t dt; + + spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &ts); + now = SPA_TIMESPEC_TO_NSEC(&ts); + dt = now - this->prev_flush_time; + this->prev_flush_time = now; + + spa_log_trace(this->log, + "%p: send blocks:%d block:%u seq:%u ts:%u size:%u " + "wrote:%d dt:%"PRIu64, + this, this->block_count, this->block_size, this->seqnum, + this->timestamp, this->buffer_used, written, dt); + } + + if (written < 0) { + spa_log_debug(this->log, "%p: %m", this); + return -errno; + } + + return written; +} + +static int encode_buffer(struct impl *this, const void *data, uint32_t size) +{ + int processed; + size_t out_encoded; + struct port *port = &this->port; + const void *from_data = data; + int from_size = size; + + spa_log_trace(this->log, "%p: encode %d used %d, %d %d %d", + this, size, this->buffer_used, port->frame_size, this->block_size, + this->block_count); + + if (this->need_flush) + return 0; + + if (this->buffer_used >= sizeof(this->buffer)) + return -ENOSPC; + + if (size < this->block_size - this->tmp_buffer_used) { + memcpy(this->tmp_buffer + this->tmp_buffer_used, data, size); + this->tmp_buffer_used += size; + return size; + } else if (this->tmp_buffer_used > 0) { + memcpy(this->tmp_buffer + this->tmp_buffer_used, data, this->block_size - this->tmp_buffer_used); + from_data = this->tmp_buffer; + from_size = this->block_size; + this->tmp_buffer_used = this->block_size - this->tmp_buffer_used; + } + + processed = this->codec->encode(this->codec_data, + from_data, from_size, + this->buffer + this->buffer_used, + sizeof(this->buffer) - this->buffer_used, + &out_encoded, &this->need_flush); + if (processed < 0) + return processed; + + this->sample_count += processed / port->frame_size; + this->block_count += processed / this->block_size; + this->buffer_used += out_encoded; + + spa_log_trace(this->log, "%p: processed %d %zd used %d", + this, processed, out_encoded, this->buffer_used); + + if (this->tmp_buffer_used) { + processed = this->tmp_buffer_used; + this->tmp_buffer_used = 0; + } + return processed; +} + +static int encode_fragment(struct impl *this) +{ + int res; + size_t out_encoded; + struct port *port = &this->port; + + spa_log_trace(this->log, "%p: encode fragment used %d, %d %d %d", + this, this->buffer_used, port->frame_size, this->block_size, + this->block_count); + + if (this->need_flush) + return 0; + + res = this->codec->encode(this->codec_data, + NULL, 0, + this->buffer + this->buffer_used, + sizeof(this->buffer) - this->buffer_used, + &out_encoded, &this->need_flush); + if (res < 0) + return res; + if (res != 0) + return -EINVAL; + + this->buffer_used += out_encoded; + + spa_log_trace(this->log, "%p: processed fragment %zd used %d", + this, out_encoded, this->buffer_used); + + return 0; +} + +static int flush_buffer(struct impl *this) +{ + spa_log_trace(this->log, "%p: used:%d block_size:%d", this, + this->buffer_used, this->block_size); + + if (this->need_flush) + return send_buffer(this); + + return 0; +} + +static int add_data(struct impl *this, const void *data, uint32_t size) +{ + int processed, total = 0; + + while (size > 0) { + processed = encode_buffer(this, data, size); + + if (processed <= 0) + return total > 0 ? total : processed; + + data = SPA_PTROFF(data, processed, void); + size -= processed; + total += processed; + } + return total; +} + +static void enable_flush_timer(struct impl *this, bool enabled) +{ + struct itimerspec ts; + + if (!enabled) + this->next_flush_time = 0; + + ts.it_value.tv_sec = this->next_flush_time / SPA_NSEC_PER_SEC; + ts.it_value.tv_nsec = this->next_flush_time % SPA_NSEC_PER_SEC; + ts.it_interval.tv_sec = 0; + ts.it_interval.tv_nsec = 0; + spa_system_timerfd_settime(this->data_system, + this->flush_timerfd, SPA_FD_TIMER_ABSTIME, &ts, NULL); + + this->flush_pending = enabled; +} + +static uint32_t get_queued_frames(struct impl *this) +{ + struct port *port = &this->port; + uint32_t bytes = 0; + struct buffer *b; + + spa_list_for_each(b, &port->ready, link) { + struct spa_data *d = b->buf->datas; + + bytes += d[0].chunk->size; + } + + if (bytes > port->ready_offset) + bytes -= port->ready_offset; + else + bytes = 0; + + return bytes / port->frame_size; +} + +static int flush_data(struct impl *this, uint64_t now_time) +{ + int written; + uint32_t total_frames; + struct port *port = &this->port; + int unused_buffer; + + if (!this->flush_source.loop) { + /* I/O in error state */ + return -EIO; + } + + total_frames = 0; +again: + written = 0; + if (this->fragment && !this->need_flush) { + int res; + this->fragment = false; + if ((res = encode_fragment(this)) < 0) { + /* Error */ + reset_buffer(this); + return res; + } + } + while (!spa_list_is_empty(&port->ready) && !this->need_flush) { + uint8_t *src; + uint32_t n_bytes, n_frames; + struct buffer *b; + struct spa_data *d; + uint32_t index, offs, avail, l0, l1; + + b = spa_list_first(&port->ready, struct buffer, link); + d = b->buf->datas; + + src = d[0].data; + + index = d[0].chunk->offset + port->ready_offset; + avail = d[0].chunk->size - port->ready_offset; + avail /= port->frame_size; + + offs = index % d[0].maxsize; + n_frames = avail; + n_bytes = n_frames * port->frame_size; + + l0 = SPA_MIN(n_bytes, d[0].maxsize - offs); + l1 = n_bytes - l0; + + written = add_data(this, src + offs, l0); + if (written > 0 && l1 > 0) + written += add_data(this, src, l1); + if (written <= 0) { + if (written < 0 && written != -ENOSPC) { + spa_list_remove(&b->link); + SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUT); + this->port.io->buffer_id = b->id; + spa_log_warn(this->log, "%p: error %s, reuse buffer %u", + this, spa_strerror(written), b->id); + spa_node_call_reuse_buffer(&this->callbacks, 0, b->id); + port->ready_offset = 0; + } + break; + } + + n_frames = written / port->frame_size; + + port->ready_offset += written; + + if (port->ready_offset >= d[0].chunk->size) { + spa_list_remove(&b->link); + SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUT); + spa_log_trace(this->log, "%p: reuse buffer %u", this, b->id); + this->port.io->buffer_id = b->id; + + spa_node_call_reuse_buffer(&this->callbacks, 0, b->id); + port->ready_offset = 0; + } + total_frames += n_frames; + + spa_log_trace(this->log, "%p: written %u frames", this, total_frames); + } + + if (written > 0 && this->buffer_used == this->header_size) { + enable_flush_timer(this, false); + return 0; + } + + if (this->flush_pending) { + spa_log_trace(this->log, "%p: wait for flush timer", this); + return 0; + } + + /* + * Get socket queue size before writing to it. + * This should be the same as buffer size to increase bitpool + * Bitpool shouldn't be increased when data is left over in the buffer + */ + unused_buffer = get_transport_unused_size(this); + + written = flush_buffer(this); + + if (written == -EAGAIN) { + spa_log_trace(this->log, "%p: fail flush", this); + if (now_time - this->last_error > SPA_NSEC_PER_SEC / 2) { + int res = this->codec->reduce_bitpool(this->codec_data); + + spa_log_debug(this->log, "%p: reduce bitpool: %i", this, res); + this->last_error = now_time; + } + + /* + * The socket buffer is full, and the device is not processing data + * fast enough, so should just skip this packet. There will be a sound + * glitch in any case. + */ + written = this->buffer_used; + } + + if (written < 0) { + spa_log_trace(this->log, "%p: error flushing %s", this, + spa_strerror(written)); + reset_buffer(this); + enable_flush_timer(this, false); + return written; + } + else if (written > 0) { + /* + * We cannot write all data we have at once, since this can exceed device + * buffers (esp. for the A2DP low-latency codecs) and socket buffers, so + * flush needs to be delayed. + */ + uint32_t packet_samples = this->block_count * this->block_size + / port->frame_size; + uint64_t packet_time = (uint64_t)packet_samples * SPA_NSEC_PER_SEC + / port->current_format.info.raw.rate; + + if (SPA_LIKELY(this->position)) { + uint32_t frames = get_queued_frames(this); + uint64_t duration_ns; + + /* + * Flush at the time position of the next buffered sample. + */ + duration_ns = ((uint64_t)this->position->clock.duration * SPA_NSEC_PER_SEC + / this->position->clock.rate.denom); + this->next_flush_time = this->process_time + duration_ns + - ((uint64_t)frames * SPA_NSEC_PER_SEC + / port->current_format.info.raw.rate); + + /* + * We could delay the output by one packet to avoid waiting + * for the next buffer and so make send intervals exactly regular. + * However, this is not needed for A2DP or BAP. The controller + * will do the scheduling for us, and there's also the socket buffer + * in between. + */ +#if 0 + this->next_flush_time += SPA_MIN(packet_time, + duration_ns * (port->n_buffers - 1)); +#endif + } else { + if (this->next_flush_time == 0) + this->next_flush_time = this->process_time; + this->next_flush_time += packet_time; + } + + if (this->need_flush == NEED_FLUSH_FRAGMENT) { + reset_buffer(this); + this->fragment = true; + goto again; + } + + if (now_time - this->last_error > SPA_NSEC_PER_SEC) { + if (unused_buffer == (int)this->fd_buffer_size) { + int res = this->codec->increase_bitpool(this->codec_data); + + spa_log_debug(this->log, "%p: increase bitpool: %i", this, res); + } + this->last_error = now_time; + } + + spa_log_trace(this->log, "%p: flush at:%"PRIu64" process:%"PRIu64, this, + this->next_flush_time, this->process_time); + reset_buffer(this); + enable_flush_timer(this, true); + } + else { + /* Don't want to flush yet, or failed to write anything */ + spa_log_trace(this->log, "%p: skip flush", this); + enable_flush_timer(this, false); + } + return 0; +} + +static void media_on_flush_error(struct spa_source *source) +{ + struct impl *this = source->data; + + spa_log_trace(this->log, "%p: flush event", this); + + if (source->rmask & (SPA_IO_ERR | SPA_IO_HUP)) { + spa_log_warn(this->log, "%p: error %d", this, source->rmask); + if (this->flush_source.loop) + spa_loop_remove_source(this->data_loop, &this->flush_source); + return; + } +} + +static void media_on_flush_timeout(struct spa_source *source) +{ + struct impl *this = source->data; + uint64_t exp; + int res; + + spa_log_trace(this->log, "%p: flush on timeout", this); + + if ((res = spa_system_timerfd_read(this->data_system, this->flush_timerfd, &exp)) < 0) { + if (res != -EAGAIN) + spa_log_warn(this->log, "error reading timerfd: %s", spa_strerror(res)); + return; + } + + if (this->transport == NULL) { + enable_flush_timer(this, false); + return; + } + + while (exp-- > 0) { + this->flush_pending = false; + flush_data(this, this->current_time); + } +} + +static void media_on_timeout(struct spa_source *source) +{ + struct impl *this = source->data; + struct port *port = &this->port; + uint64_t exp, duration; + uint32_t rate; + struct spa_io_buffers *io = port->io; + uint64_t prev_time, now_time; + int res; + + if (this->transport == NULL) + return; + + if (this->started) { + if ((res = spa_system_timerfd_read(this->data_system, this->timerfd, &exp)) < 0) { + if (res != -EAGAIN) + spa_log_warn(this->log, "error reading timerfd: %s", + spa_strerror(res)); + return; + } + } + + prev_time = this->current_time; + now_time = this->current_time = this->next_time; + + spa_log_debug(this->log, "%p: timer %"PRIu64" %"PRIu64"", this, + now_time, now_time - prev_time); + + if (SPA_LIKELY(this->position)) { + duration = this->position->clock.duration; + rate = this->position->clock.rate.denom; + } else { + duration = 1024; + rate = 48000; + } + + this->next_time = now_time + duration * SPA_NSEC_PER_SEC / rate; + + if (SPA_LIKELY(this->clock)) { + int64_t delay_nsec; + + this->clock->nsec = now_time; + this->clock->position += duration; + this->clock->duration = duration; + this->clock->rate_diff = 1.0f; + this->clock->next_nsec = this->next_time; + + delay_nsec = spa_bt_transport_get_delay_nsec(this->transport); + + /* Negative delay doesn't work properly, so disallow it */ + delay_nsec += SPA_CLAMP(this->props.latency_offset, -delay_nsec, INT64_MAX / 2); + + this->clock->delay = (delay_nsec * this->clock->rate.denom) / SPA_NSEC_PER_SEC; + } + + + spa_log_trace(this->log, "%p: %d", this, io->status); + io->status = SPA_STATUS_NEED_DATA; + spa_node_call_ready(&this->callbacks, SPA_STATUS_NEED_DATA); + + set_timeout(this, this->next_time); +} + +static int do_start(struct impl *this) +{ + int res, val, size; + struct port *port; + socklen_t len; + uint8_t *conf; + uint32_t flags; + + if (this->started) + return 0; + + spa_return_val_if_fail(this->transport, -EIO); + + this->following = is_following(this); + + spa_log_debug(this->log, "%p: start following:%d", this, this->following); + + if ((res = spa_bt_transport_acquire(this->transport, false)) < 0) + return res; + + port = &this->port; + + conf = this->transport->configuration; + size = this->transport->configuration_len; + + spa_log_debug(this->log, "Transport configuration:"); + spa_debug_log_mem(this->log, SPA_LOG_LEVEL_DEBUG, 2, conf, (size_t)size); + + flags = this->is_duplex ? MEDIA_CODEC_FLAG_SINK : 0; + + this->codec_data = this->codec->init(this->codec, + flags, + this->transport->configuration, + this->transport->configuration_len, + &port->current_format, + this->codec_props, + this->transport->write_mtu); + if (this->codec_data == NULL) + return -EIO; + + spa_log_info(this->log, "%p: using %s codec %s, delay:%"PRIi64" ms", this, + this->codec->bap ? "BAP" : "A2DP", this->codec->description, + (int64_t)(spa_bt_transport_get_delay_nsec(this->transport) / SPA_NSEC_PER_MSEC)); + + this->seqnum = 0; + + this->block_size = this->codec->get_block_size(this->codec_data); + if (this->block_size > sizeof(this->tmp_buffer)) { + spa_log_error(this->log, "block-size %d > %zu", + this->block_size, sizeof(this->tmp_buffer)); + return -EIO; + } + + spa_log_debug(this->log, "%p: block_size %d", this, this->block_size); + + val = this->codec->send_buf_size > 0 + /* The kernel doubles the SO_SNDBUF option value set by setsockopt(). */ + ? this->codec->send_buf_size / 2 + this->codec->send_buf_size % 2 + : FILL_FRAMES * this->transport->write_mtu; + if (setsockopt(this->transport->fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof(val)) < 0) + spa_log_warn(this->log, "%p: SO_SNDBUF %m", this); + + len = sizeof(val); + if (getsockopt(this->transport->fd, SOL_SOCKET, SO_SNDBUF, &val, &len) < 0) { + spa_log_warn(this->log, "%p: SO_SNDBUF %m", this); + } + else { + spa_log_debug(this->log, "%p: SO_SNDBUF: %d", this, val); + } + this->fd_buffer_size = val; + + val = FILL_FRAMES * this->transport->read_mtu; + if (setsockopt(this->transport->fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof(val)) < 0) + spa_log_warn(this->log, "%p: SO_RCVBUF %m", this); + + val = 6; + if (setsockopt(this->transport->fd, SOL_SOCKET, SO_PRIORITY, &val, sizeof(val)) < 0) + spa_log_warn(this->log, "SO_PRIORITY failed: %m"); + + reset_buffer(this); + + this->source.data = this; + this->source.fd = this->timerfd; + this->source.func = media_on_timeout; + this->source.mask = SPA_IO_IN; + this->source.rmask = 0; + spa_loop_add_source(this->data_loop, &this->source); + + this->flush_timer_source.data = this; + this->flush_timer_source.fd = this->flush_timerfd; + this->flush_timer_source.func = media_on_flush_timeout; + this->flush_timer_source.mask = SPA_IO_IN; + this->flush_timer_source.rmask = 0; + spa_loop_add_source(this->data_loop, &this->flush_timer_source); + + this->flush_source.data = this; + this->flush_source.fd = this->transport->fd; + this->flush_source.func = media_on_flush_error; + this->flush_source.mask = SPA_IO_ERR | SPA_IO_HUP; + this->flush_source.rmask = 0; + spa_loop_add_source(this->data_loop, &this->flush_source); + + this->flush_pending = false; + + set_timers(this); + this->started = true; + + 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; + struct itimerspec ts; + + if (this->source.loop) + spa_loop_remove_source(this->data_loop, &this->source); + ts.it_value.tv_sec = 0; + ts.it_value.tv_nsec = 0; + ts.it_interval.tv_sec = 0; + ts.it_interval.tv_nsec = 0; + spa_system_timerfd_settime(this->data_system, this->timerfd, 0, &ts, NULL); + + if (this->flush_source.loop) + spa_loop_remove_source(this->data_loop, &this->flush_source); + + if (this->flush_timer_source.loop) + spa_loop_remove_source(this->data_loop, &this->flush_timer_source); + ts.it_value.tv_sec = 0; + ts.it_value.tv_nsec = 0; + ts.it_interval.tv_sec = 0; + ts.it_interval.tv_nsec = 0; + spa_system_timerfd_settime(this->data_system, this->flush_timerfd, 0, &ts, NULL); + + return 0; +} + +static int do_stop(struct impl *this) +{ + int res = 0; + + if (!this->started) + return 0; + + spa_log_trace(this->log, "%p: stop", this); + + spa_loop_invoke(this->data_loop, do_remove_source, 0, NULL, 0, true, this); + + this->started = false; + + if (this->transport) + res = spa_bt_transport_release(this->transport); + + if (this->codec_data) + this->codec->deinit(this->codec_data); + this->codec_data = NULL; + + return res; +} + +static int impl_node_send_command(void *object, const struct spa_command *command) +{ + struct impl *this = object; + struct port *port; + int res; + + spa_return_val_if_fail(this != NULL, -EINVAL); + spa_return_val_if_fail(command != NULL, -EINVAL); + + port = &this->port; + + switch (SPA_NODE_COMMAND_ID(command)) { + case SPA_NODE_COMMAND_Start: + if (!port->have_format) + return -EIO; + if (port->n_buffers == 0) + return -EIO; + + if ((res = do_start(this)) < 0) + return res; + break; + case SPA_NODE_COMMAND_Suspend: + case SPA_NODE_COMMAND_Pause: + if ((res = do_stop(this)) < 0) + return res; + break; + default: + return -ENOTSUP; + } + return 0; +} + +static void emit_node_info(struct impl *this, bool full) +{ + struct spa_dict_item node_info_items[] = { + { SPA_KEY_DEVICE_API, "bluez5" }, + { SPA_KEY_MEDIA_CLASS, this->is_output ? "Audio/Sink" : "Stream/Input/Audio" }, + { "media.name", ((this->transport && this->transport->device->name) ? + this->transport->device->name : this->codec->bap ? "BAP" : "A2DP" ) }, + { SPA_KEY_NODE_DRIVER, this->is_output ? "true" : "false" }, + }; + 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, + SPA_DIRECTION_INPUT, 0, &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; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + spa_hook_list_isolate(&this->hooks, &save, listener, events, data); + + emit_node_info(this, true); + emit_port_info(this, &this->port, 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; + int res; + + 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 = &this->port; + + 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 (this->codec == NULL) + return -EIO; + if (this->transport == NULL) + return -EIO; + + if ((res = this->codec->enum_config(this->codec, + this->is_duplex ? MEDIA_CODEC_FLAG_SINK : 0, + this->transport->configuration, + this->transport->configuration_len, + id, result.index, &b, ¶m)) != 1) + return res; + break; + + case SPA_PARAM_Format: + if (!port->have_format) + return -EIO; + if (result.index > 0) + return 0; + + param = spa_format_audio_raw_build(&b, id, &port->current_format.info.raw); + 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( + MIN_BUFFERS, + MIN_BUFFERS, + MAX_BUFFERS), + SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(1), + SPA_PARAM_BUFFERS_size, SPA_POD_CHOICE_RANGE_Int( + this->quantum_limit * port->frame_size, + 16 * port->frame_size, + INT32_MAX), + SPA_PARAM_BUFFERS_stride, SPA_POD_Int(port->frame_size)); + 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 clear_buffers(struct impl *this, struct port *port) +{ + do_stop(this); + if (port->n_buffers > 0) { + spa_list_init(&port->ready); + port->n_buffers = 0; + } + 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) { + spa_log_debug(this->log, "clear format"); + 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_audio || + info.media_subtype != SPA_MEDIA_SUBTYPE_raw) + return -EINVAL; + + if (spa_format_audio_raw_parse(format, &info.info.raw) < 0) + return -EINVAL; + + if (info.info.raw.rate == 0 || + info.info.raw.channels == 0 || + info.info.raw.channels > SPA_AUDIO_MAX_CHANNELS) + return -EINVAL; + + port->frame_size = info.info.raw.channels; + switch (info.info.raw.format) { + case SPA_AUDIO_FORMAT_S16: + port->frame_size *= 2; + break; + case SPA_AUDIO_FORMAT_S24: + port->frame_size *= 3; + break; + case SPA_AUDIO_FORMAT_S24_32: + case SPA_AUDIO_FORMAT_S32: + case SPA_AUDIO_FORMAT_F32: + port->frame_size *= 4; + break; + default: + return -EINVAL; + } + + port->current_format = info; + port->have_format = true; + } + + port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS; + if (port->have_format) { + port->info.change_mask |= SPA_PORT_CHANGE_MASK_FLAGS; + port->info.flags = SPA_PORT_FLAG_LIVE; + port->info.change_mask |= SPA_PORT_CHANGE_MASK_RATE; + port->info.rate = SPA_FRACTION(1, port->current_format.info.raw.rate); + 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); + port->params[IDX_Latency].flags ^= SPA_PARAM_INFO_SERIAL; + } 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(node, direction, port_id), -EINVAL); + port = &this->port; + + 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 = &this->port; + + spa_log_debug(this->log, "use buffers %d", n_buffers); + + clear_buffers(this, port); + + if (n_buffers > 0 && !port->have_format) + return -EIO; + if (n_buffers > MAX_BUFFERS) + return -ENOSPC; + + for (i = 0; i < n_buffers; i++) { + struct buffer *b = &port->buffers[i]; + + b->buf = buffers[i]; + b->id = i; + SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUT); + + b->h = spa_buffer_find_meta_data(buffers[i], SPA_META_Header, sizeof(*b->h)); + + if (buffers[i]->datas[0].data == NULL) { + spa_log_error(this->log, "%p: need mapped memory", this); + return -EINVAL; + } + } + port->n_buffers = n_buffers; + + 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 = &this->port; + + 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) +{ + return -ENOTSUP; +} + +static int impl_node_process(void *object) +{ + struct impl *this = object; + struct port *port; + struct spa_io_buffers *io; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + port = &this->port; + if ((io = port->io) == NULL) + return -EIO; + + if (this->position && this->position->clock.flags & SPA_IO_CLOCK_FLAG_FREEWHEEL) { + io->status = SPA_STATUS_NEED_DATA; + return SPA_STATUS_HAVE_DATA; + } + + if (io->status == SPA_STATUS_HAVE_DATA && io->buffer_id < port->n_buffers) { + struct buffer *b = &port->buffers[io->buffer_id]; + + if (!SPA_FLAG_IS_SET(b->flags, BUFFER_FLAG_OUT)) { + spa_log_warn(this->log, "%p: buffer %u in use", this, io->buffer_id); + io->status = -EINVAL; + return -EINVAL; + } + + spa_log_trace(this->log, "%p: queue buffer %u", this, io->buffer_id); + + spa_list_append(&port->ready, &b->link); + SPA_FLAG_CLEAR(b->flags, BUFFER_FLAG_OUT); + + io->buffer_id = SPA_ID_INVALID; + io->status = SPA_STATUS_OK; + } + + if (this->following) { + if (this->position) { + this->current_time = this->position->clock.nsec; + } else { + struct timespec now; + spa_system_clock_gettime(this->data_system, CLOCK_MONOTONIC, &now); + this->current_time = SPA_TIMESPEC_TO_NSEC(&now); + } + } + + this->process_time = this->current_time; + + if (!spa_list_is_empty(&port->ready)) { + spa_log_trace(this->log, "%p: flush on process", this); + flush_data(this, this->current_time); + } + + return SPA_STATUS_HAVE_DATA; +} + +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 void transport_delay_changed(void *data) +{ + struct impl *this = data; + spa_log_debug(this->log, "transport %p delay changed", this->transport); + set_latency(this, true); +} + +static int do_transport_destroy(struct spa_loop *loop, + bool async, + uint32_t seq, + const void *data, + size_t size, + void *user_data) +{ + struct impl *this = user_data; + this->transport = NULL; + return 0; +} + +static void transport_destroy(void *data) +{ + struct impl *this = data; + spa_log_debug(this->log, "transport %p destroy", this->transport); + spa_loop_invoke(this->data_loop, do_transport_destroy, 0, NULL, 0, true, this); +} + +static void transport_state_changed(void *data, + enum spa_bt_transport_state old, + enum spa_bt_transport_state state) +{ + struct impl *this = data; + + spa_log_debug(this->log, "%p: transport %p state %d->%d", this, this->transport, old, state); + + if (state < SPA_BT_TRANSPORT_STATE_ACTIVE && old == SPA_BT_TRANSPORT_STATE_ACTIVE && + this->started) { + uint8_t buffer[1024]; + struct spa_pod_builder b = { 0 }; + + spa_log_debug(this->log, "%p: transport %p becomes inactive: stop and indicate error", + this, this->transport); + + /* + * If establishing connection fails due to remote end not activating + * the transport, we won't get a write error, but instead see a transport + * state change. + * + * Stop and emit a node error, to let upper levels handle it. + */ + + do_stop(this); + + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + spa_node_emit_event(&this->hooks, + spa_pod_builder_add_object(&b, + SPA_TYPE_EVENT_Node, SPA_NODE_EVENT_Error)); + } +} + +static const struct spa_bt_transport_events transport_events = { + SPA_VERSION_BT_TRANSPORT_EVENTS, + .delay_changed = transport_delay_changed, + .state_changed = transport_state_changed, + .destroy = transport_destroy, +}; + +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); + if (this->codec_props && this->codec->clear_props) + this->codec->clear_props(this->codec_props); + if (this->transport) + spa_hook_remove(&this->transport_listener); + spa_system_close(this->data_system, this->timerfd); + spa_system_close(this->data_system, this->flush_timerfd); + 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; + struct port *port; + const char *str; + + 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->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); + + spa_log_topic_init(this->log, &log_topic); + + 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->node.iface = SPA_INTERFACE_INIT( + SPA_TYPE_INTERFACE_Node, + SPA_VERSION_NODE, + &impl_node, this); + spa_hook_list_init(&this->hooks); + + this->info_all = SPA_NODE_CHANGE_MASK_FLAGS | + SPA_NODE_CHANGE_MASK_PARAMS | + SPA_NODE_CHANGE_MASK_PROPS; + this->info = SPA_NODE_INFO_INIT(); + this->info.max_input_ports = 1; + this->info.max_output_ports = 0; + 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->info.params = this->params; + this->info.n_params = N_NODE_PARAMS; + + port = &this->port; + port->info_all = SPA_PORT_CHANGE_MASK_FLAGS | + SPA_PORT_CHANGE_MASK_PARAMS; + port->info = SPA_PORT_INFO_INIT(); + port->info.flags = 0; + 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->latency = SPA_LATENCY_INFO(SPA_DIRECTION_INPUT); + port->latency.min_quantum = 1.0f; + port->latency.max_quantum = 1.0f; + + spa_list_init(&port->ready); + + this->quantum_limit = 8192; + + if (info && (str = spa_dict_lookup(info, "clock.quantum-limit"))) + spa_atou32(str, &this->quantum_limit, 0); + + if (info && (str = spa_dict_lookup(info, "api.bluez5.a2dp-duplex")) != NULL) + this->is_duplex = spa_atob(str); + + if (info && (str = spa_dict_lookup(info, SPA_KEY_API_BLUEZ5_TRANSPORT))) + sscanf(str, "pointer:%p", &this->transport); + + if (this->transport == NULL) { + spa_log_error(this->log, "a transport is needed"); + return -EINVAL; + } + if (this->transport->media_codec == NULL) { + spa_log_error(this->log, "a transport codec is needed"); + return -EINVAL; + } + + this->codec = this->transport->media_codec; + + if (this->is_duplex) { + if (!this->codec->duplex_codec) { + spa_log_error(this->log, "transport codec doesn't support duplex"); + return -EINVAL; + } + this->codec = this->codec->duplex_codec; + } + + if (this->codec->init_props != NULL) + this->codec_props = this->codec->init_props(this->codec, + this->is_duplex ? MEDIA_CODEC_FLAG_SINK : 0, + this->transport->device->settings); + + if (this->codec->bap) + this->is_output = this->transport->bap_initiator; + else + this->is_output = true; + + reset_props(this, &this->props); + + set_latency(this, false); + + spa_bt_transport_add_listener(this->transport, + &this->transport_listener, &transport_events, this); + + this->timerfd = spa_system_timerfd_create(this->data_system, + CLOCK_MONOTONIC, SPA_FD_CLOEXEC | SPA_FD_NONBLOCK); + + this->flush_timerfd = spa_system_timerfd_create(this->data_system, + CLOCK_MONOTONIC, SPA_FD_CLOEXEC | SPA_FD_NONBLOCK); + + return 0; +} + +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, "Wim Taymans <wim.taymans@gmail.com>" }, + { SPA_KEY_FACTORY_DESCRIPTION, "Play audio with the media" }, + { SPA_KEY_FACTORY_USAGE, SPA_KEY_API_BLUEZ5_TRANSPORT"=<transport>" }, +}; + +static const struct spa_dict info = SPA_DICT_INIT_ARRAY(info_items); + +const struct spa_handle_factory spa_media_sink_factory = { + SPA_VERSION_HANDLE_FACTORY, + SPA_NAME_API_BLUEZ5_MEDIA_SINK, + &info, + impl_get_size, + impl_init, + impl_enum_interface_info, +}; + +/* Retained for backward compatibility: */ +const struct spa_handle_factory spa_a2dp_sink_factory = { + SPA_VERSION_HANDLE_FACTORY, + SPA_NAME_API_BLUEZ5_A2DP_SINK, + &info, + impl_get_size, + impl_init, + impl_enum_interface_info, +}; |