diff options
Diffstat (limited to '')
| -rw-r--r-- | spa/plugins/alsa/alsa-seq-bridge.c | 1006 |
1 files changed, 1006 insertions, 0 deletions
diff --git a/spa/plugins/alsa/alsa-seq-bridge.c b/spa/plugins/alsa/alsa-seq-bridge.c new file mode 100644 index 0000000..ee50163 --- /dev/null +++ b/spa/plugins/alsa/alsa-seq-bridge.c @@ -0,0 +1,1006 @@ +/* Spa ALSA Source + * + * 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 <stddef.h> +#include <ctype.h> + +#include <alsa/asoundlib.h> + +#include <spa/node/node.h> +#include <spa/node/utils.h> +#include <spa/node/keys.h> +#include <spa/utils/keys.h> +#include <spa/utils/names.h> +#include <spa/utils/string.h> +#include <spa/utils/list.h> +#include <spa/monitor/device.h> +#include <spa/param/audio/format.h> +#include <spa/param/latency-utils.h> +#include <spa/pod/filter.h> + +#include "alsa-seq.h" + +#define DEFAULT_DEVICE "default" +#define DEFAULT_CLOCK_NAME "clock.system.monotonic" + +static void reset_props(struct props *props) +{ + strncpy(props->device, DEFAULT_DEVICE, sizeof(props->device)); + strncpy(props->clock_name, DEFAULT_CLOCK_NAME, sizeof(props->clock_name)); + props->disable_longname = 0; +} + +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 seq_state *this = object; + struct spa_pod *param; + uint8_t buffer[1024]; + struct spa_pod_builder b = { 0 }; + struct props *p; + 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); + + p = &this->props; + + 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_device), + SPA_PROP_INFO_description, SPA_POD_String("The ALSA device"), + SPA_PROP_INFO_type, SPA_POD_Stringn(p->device, sizeof(p->device))); + break; + default: + return 0; + } + break; + + case SPA_PARAM_Props: + switch (result.index) { + case 0: + param = spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_Props, id, + SPA_PROP_device, SPA_POD_Stringn(p->device, sizeof(p->device))); + 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_Clock), + SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_clock))); + break; + case 1: + param = spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_ParamIO, id, + SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Position), + SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_position))); + 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 impl_node_set_io(void *object, uint32_t id, void *data, size_t size) +{ + struct seq_state *this = object; + + 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; + } + spa_alsa_seq_reassign_follower(this); + return 0; +} + +static int impl_node_set_param(void *object, uint32_t id, uint32_t flags, + const struct spa_pod *param) +{ + struct seq_state *this = object; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + switch (id) { + case SPA_PARAM_Props: + { + struct props *p = &this->props; + + if (param == NULL) { + reset_props(p); + return 0; + } + spa_pod_parse_object(param, + SPA_TYPE_OBJECT_Props, NULL, + SPA_PROP_device, SPA_POD_OPT_Stringn(p->device, sizeof(p->device))); + break; + } + default: + return -ENOENT; + } + + return 0; +} + +static int impl_node_send_command(void *object, const struct spa_command *command) +{ + struct seq_state *this = object; + int res; + + 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 = spa_alsa_seq_start(this)) < 0) + return res; + break; + case SPA_NODE_COMMAND_Pause: + case SPA_NODE_COMMAND_Suspend: + if ((res = spa_alsa_seq_pause(this)) < 0) + return res; + break; + default: + return -ENOTSUP; + } + return 0; +} + +static const struct spa_dict_item node_info_items[] = { + { SPA_KEY_DEVICE_API, "alsa" }, + { SPA_KEY_MEDIA_CLASS, "Midi/Bridge" }, + { SPA_KEY_NODE_DRIVER, "true" }, +}; + +static void emit_node_info(struct seq_state *this, bool full) +{ + 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 inline void clean_name(char *name) +{ + char *c; + for (c = name; *c; ++c) { + if (!isalnum(*c) && strchr(" /_:()[]", *c) == NULL) + *c = '-'; + } +} + +static void emit_port_info(struct seq_state *this, struct seq_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) { + struct spa_dict_item items[5]; + uint32_t n_items = 0; + int id; + snd_seq_port_info_t *info; + snd_seq_client_info_t *client_info; + char card[8]; + char name[256]; + char path[128]; + char alias[128]; + + snd_seq_port_info_alloca(&info); + snd_seq_get_any_port_info(this->sys.hndl, + port->addr.client, port->addr.port, info); + + snd_seq_client_info_alloca(&client_info); + snd_seq_get_any_client_info(this->sys.hndl, + port->addr.client, client_info); + + int card_id; + + // Failed to obtain card number (software device) or disabled + if (this->props.disable_longname || (card_id = snd_seq_client_info_get_card(client_info)) < 0) { + snprintf(name, sizeof(name), "%s:(%s_%d) %s", + snd_seq_client_info_get_name(client_info), + port->direction == SPA_DIRECTION_OUTPUT ? "capture" : "playback", + port->addr.port, + snd_seq_port_info_get_name(info)); + } else { + char *longname; + if (snd_card_get_longname(card_id, &longname) == 0) { + snprintf(name, sizeof(name), "%s:(%s_%d) %s", + longname, + port->direction == SPA_DIRECTION_OUTPUT ? "capture" : "playback", + port->addr.port, + snd_seq_port_info_get_name(info)); + free(longname); + } else { + // At least add card number to be distinct + snprintf(name, sizeof(name), "%s %d:(%s_%d) %s", + snd_seq_client_info_get_name(client_info), + card_id, + port->direction == SPA_DIRECTION_OUTPUT ? "capture" : "playback", + port->addr.port, + snd_seq_port_info_get_name(info)); + } + } + clean_name(name); + + snprintf(path, sizeof(path), "alsa:seq:%s:client_%d:%s_%d", + this->props.device, + port->addr.client, + port->direction == SPA_DIRECTION_OUTPUT ? "capture" : "playback", + port->addr.port); + clean_name(path); + + snprintf(alias, sizeof(alias), "%s:%s", + snd_seq_client_info_get_name(client_info), + snd_seq_port_info_get_name(info)); + clean_name(alias); + + items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_FORMAT_DSP, "8 bit raw midi"); + items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_OBJECT_PATH, path); + items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_PORT_NAME, name); + items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_PORT_ALIAS, alias); + if ((id = snd_seq_client_info_get_card(client_info)) != -1) { + snprintf(card, sizeof(card), "%d", id); + items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_CARD, card); + } + port->info.props = &SPA_DICT_INIT(items, n_items); + + spa_node_emit_port_info(&this->hooks, + port->direction, port->id, &port->info); + port->info.change_mask = old; + } +} + +static void emit_stream_info(struct seq_state *this, struct seq_stream *stream, bool full) +{ + uint32_t i; + + for (i = 0; i < MAX_PORTS; i++) { + struct seq_port *port = &stream->ports[i]; + if (port->valid) + emit_port_info(this, port, full); + } +} + +static int +impl_node_add_listener(void *object, + struct spa_hook *listener, + const struct spa_node_events *events, + void *data) +{ + struct seq_state *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_stream_info(this, &this->streams[SPA_DIRECTION_INPUT], true); + emit_stream_info(this, &this->streams[SPA_DIRECTION_OUTPUT], 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 seq_state *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 seq_state *this = object; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + spa_node_emit_result(&this->hooks, seq, 0, 0, NULL); + + return 0; +} + +static struct seq_port *find_port(struct seq_state *state, + struct seq_stream *stream, const snd_seq_addr_t *addr) +{ + uint32_t i; + for (i = 0; i < stream->last_port; i++) { + struct seq_port *port = &stream->ports[i]; + if (port->valid && + port->addr.client == addr->client && + port->addr.port == addr->port) + return port; + } + return NULL; +} + +static struct seq_port *alloc_port(struct seq_state *state, struct seq_stream *stream) +{ + uint32_t i; + for (i = 0; i < MAX_PORTS; i++) { + struct seq_port *port = &stream->ports[i]; + if (!port->valid) { + port->id = i; + port->direction = stream->direction; + port->valid = true; + if (stream->last_port < i + 1) + stream->last_port = i + 1; + return port; + } + } + return NULL; +} + +static void free_port(struct seq_state *state, struct seq_stream *stream, struct seq_port *port) +{ + port->valid = false; + + if (port->id + 1 == stream->last_port) { + int i; + for (i = stream->last_port - 1; i >= 0; i--) + if (stream->ports[i].valid) + break; + stream->last_port = i + 1; + } + + spa_node_emit_port_info(&state->hooks, + port->direction, port->id, NULL); + spa_zero(*port); +} + +static void init_port(struct seq_state *state, struct seq_port *port, const snd_seq_addr_t *addr, + unsigned int type) +{ + enum spa_direction reverse = SPA_DIRECTION_REVERSE(port->direction); + + port->addr = *addr; + 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.flags = SPA_PORT_FLAG_LIVE; + if (type & (SND_SEQ_PORT_TYPE_HARDWARE|SND_SEQ_PORT_TYPE_PORT|SND_SEQ_PORT_TYPE_SPECIFIC)) + port->info.flags |= SPA_PORT_FLAG_PHYSICAL | SPA_PORT_FLAG_TERMINAL; + port->params[PORT_EnumFormat] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ); + port->params[PORT_Meta] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ); + port->params[PORT_IO] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ); + port->params[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE); + port->params[PORT_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0); + port->params[PORT_Latency] = SPA_PARAM_INFO(SPA_PARAM_Latency, SPA_PARAM_INFO_READWRITE); + port->info.params = port->params; + port->info.n_params = N_PORT_PARAMS; + + spa_list_init(&port->free); + spa_list_init(&port->ready); + + port->latency[port->direction] = SPA_LATENCY_INFO( + port->direction, + .min_quantum = 1.0f, + .max_quantum = 1.0f); + port->latency[reverse] = SPA_LATENCY_INFO(reverse); + + spa_alsa_seq_activate_port(state, port, true); + + emit_port_info(state, port, true); +} + +static void update_stream_port(struct seq_state *state, struct seq_stream *stream, + const snd_seq_addr_t *addr, unsigned int caps, const snd_seq_port_info_t *info) +{ + struct seq_port *port = find_port(state, stream, addr); + + if (info == NULL) { + spa_log_debug(state->log, "free port %d.%d", addr->client, addr->port); + if (port) + free_port(state, stream, port); + } else { + if (port == NULL && (caps & stream->caps) == stream->caps) { + spa_log_debug(state->log, "new port %d.%d", addr->client, addr->port); + port = alloc_port(state, stream); + if (port == NULL) + return; + init_port(state, port, addr, snd_seq_port_info_get_type(info)); + } else if (port != NULL) { + if ((caps & stream->caps) != stream->caps) { + spa_log_debug(state->log, "free port %d.%d", addr->client, addr->port); + free_port(state, stream, port); + } + else { + spa_log_debug(state->log, "update port %d.%d", addr->client, addr->port); + port->info.change_mask = SPA_PORT_CHANGE_MASK_PROPS; + emit_port_info(state, port, false); + } + } + } +} + +static int on_port_info(void *data, const snd_seq_addr_t *addr, const snd_seq_port_info_t *info) +{ + struct seq_state *state = data; + + if (info == NULL) { + update_stream_port(state, &state->streams[SPA_DIRECTION_INPUT], addr, 0, info); + update_stream_port(state, &state->streams[SPA_DIRECTION_OUTPUT], addr, 0, info); + } else { + unsigned int caps = snd_seq_port_info_get_capability(info); + + if (caps & SND_SEQ_PORT_CAP_NO_EXPORT) + return 0; + + update_stream_port(state, &state->streams[SPA_DIRECTION_INPUT], addr, caps, info); + update_stream_port(state, &state->streams[SPA_DIRECTION_OUTPUT], addr, caps, info); + } + 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 seq_state *this = object; + struct seq_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: case 1: + param = spa_latency_build(&b, id, &port->latency[result.index]); + 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 seq_state *this, struct seq_port *port) +{ + if (port->n_buffers > 0) { + spa_list_init(&port->free); + spa_list_init(&port->ready); + port->n_buffers = 0; + } + return 0; +} + +static int port_set_format(void *object, struct seq_port *port, + uint32_t flags, const struct spa_pod *format) +{ + struct seq_state *this = object; + 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[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE); + port->params[PORT_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, SPA_PARAM_INFO_READ); + } else { + port->params[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE); + port->params[PORT_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 seq_state *this = object; + struct seq_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: + { + struct spa_latency_info info; + if ((res = spa_latency_parse(param, &info)) < 0) + return res; + if (direction == info.direction) + return -EINVAL; + + port->latency[info.direction] = info; + port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS; + port->params[PORT_Latency].flags ^= SPA_PARAM_INFO_SERIAL; + emit_port_info(this, port, false); + 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 seq_state *this = object; + struct seq_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: port %d.%d buffers:%d format:%d", this, + direction, port_id, n_buffers, port->have_format); + + 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]; + struct spa_data *d = buffers[i]->datas; + + b->buf = buffers[i]; + b->id = i; + b->flags = BUFFER_FLAG_OUT; + + b->h = spa_buffer_find_meta_data(b->buf, SPA_META_Header, sizeof(*b->h)); + + if (d[0].data == NULL) { + spa_log_error(this->log, "%p: need mapped memory", this); + return -EINVAL; + } + if (direction == SPA_DIRECTION_OUTPUT) + spa_alsa_seq_recycle_buffer(this, port, i); + } + 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 seq_state *this = object; + struct seq_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); + + spa_log_debug(this->log, "%p: io %d.%d %d %p %zd", this, + direction, port_id, id, data, size); + + 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 seq_state *this = object; + struct seq_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; + + spa_alsa_seq_recycle_buffer(this, port, buffer_id); + + return 0; +} + +static int impl_node_process(void *object) +{ + struct seq_state *this = object; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + return spa_alsa_seq_process(this); +} + +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 int impl_get_interface(struct spa_handle *handle, const char *type, void **interface) +{ + struct seq_state *this; + + spa_return_val_if_fail(handle != NULL, -EINVAL); + spa_return_val_if_fail(interface != NULL, -EINVAL); + + this = (struct seq_state *) 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 seq_state *this; + + spa_return_val_if_fail(handle != NULL, -EINVAL); + + this = (struct seq_state *) handle; + + spa_alsa_seq_close(this); + return 0; +} + +static size_t +impl_get_size(const struct spa_handle_factory *factory, + const struct spa_dict *params) +{ + return sizeof(struct seq_state); +} + +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 seq_state *this; + uint32_t i; + int res; + + 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 seq_state *) handle; + + this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log); + alsa_log_topic_init(this->log); + + this->data_system = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_DataSystem); + this->data_loop = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_DataLoop); + this->main_loop = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Loop); + + 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_PROPS | + SPA_NODE_CHANGE_MASK_PARAMS; + this->info.max_input_ports = MAX_PORTS; + this->info.max_output_ports = MAX_PORTS; + this->info.flags = SPA_NODE_FLAG_RT; + this->params[NODE_PropInfo] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ); + this->params[NODE_Props] = SPA_PARAM_INFO(SPA_PARAM_Props, SPA_PARAM_INFO_READWRITE); + this->params[NODE_IO] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ); + this->info.params = this->params; + this->info.n_params = N_NODE_PARAMS; + reset_props(&this->props); + + for (i = 0; info && i < info->n_items; i++) { + const char *k = info->items[i].key; + const char *s = info->items[i].value; + if (spa_streq(k, SPA_KEY_API_ALSA_PATH)) { + spa_scnprintf(this->props.device, + sizeof(this->props.device), "%s", s); + } else if (spa_streq(k, "clock.name")) { + spa_scnprintf(this->props.clock_name, + sizeof(this->props.clock_name), "%s", s); + } else if (spa_streq(k, SPA_KEY_API_ALSA_DISABLE_LONGNAME)) { + this->props.disable_longname = spa_atob(s); + } + } + + this->port_info = on_port_info; + this->port_info_data = this; + + if ((res = spa_alsa_seq_open(this)) < 0) + return res; + + 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); + + if (*index >= SPA_N_ELEMENTS(impl_interfaces)) + return 0; + + *info = &impl_interfaces[(*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, "Bridge midi ports with the alsa sequencer API" }, + { SPA_KEY_FACTORY_USAGE, "["SPA_KEY_API_ALSA_PATH"=<device>]" }, +}; + +static const struct spa_dict info = SPA_DICT_INIT_ARRAY(info_items); + +const struct spa_handle_factory spa_alsa_seq_bridge_factory = { + SPA_VERSION_HANDLE_FACTORY, + SPA_NAME_API_ALSA_SEQ_BRIDGE, + &info, + impl_get_size, + impl_init, + impl_enum_interface_info, +}; |