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-rw-r--r--src/modules/module-roc-sink.c514
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diff --git a/src/modules/module-roc-sink.c b/src/modules/module-roc-sink.c
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+/* PipeWire
+ *
+ * Copyright © 2021 Wim Taymans <wim.taymans@gmail.com>
+ * Copyright © 2021 Sanchayan Maity <sanchayan@asymptotic.io>
+ *
+ * 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 <limits.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "config.h"
+
+#include <spa/utils/hook.h>
+#include <spa/utils/result.h>
+#include <spa/param/audio/format-utils.h>
+
+#include <roc/config.h>
+#include <roc/log.h>
+#include <roc/context.h>
+#include <roc/log.h>
+#include <roc/sender.h>
+
+#include <pipewire/pipewire.h>
+#include <pipewire/impl.h>
+
+#include "module-roc/common.h"
+
+/** \page page_module_roc_sink PipeWire Module: ROC sink
+ *
+ * The `roc-sink` module creates a PipeWire sink that sends samples to
+ * a preconfigured receiver address. One can then connect an audio stream
+ * of any running application to that sink or make it the default sink.
+ *
+ * ## Module Options
+ *
+ * Options specific to the behavior of this module
+ *
+ * - `sink.props = {}`: properties to be passed to the sink stream
+ * - `sink.name = <str>`: node.name of the sink
+ * - `remote.ip = <str>`: remote receiver ip
+ * - `remote.source.port = <str>`: remote receiver TCP/UDP port for source packets
+ * - `remote.repair.port = <str>`: remote receiver TCP/UDP port for receiver packets
+ * - `fec.code = <str>`: Possible values: `disable`, `rs8m`, `ldpc`
+ *
+ * ## General options
+ *
+ * Options with well-known behavior:
+ *
+ * - \ref PW_KEY_NODE_NAME
+ * - \ref PW_KEY_NODE_DESCRIPTION
+ * - \ref PW_KEY_MEDIA_NAME
+ *
+ * ## Example configuration
+ *\code{.unparsed}
+ * context.modules = [
+ * { name = libpipewire-module-roc-sink
+ * args = {
+ * local.ip = 0.0.0.0
+ * fec.code = disable
+ * remote.ip = 192.168.0.244
+ * remote.source.port = 10001
+ * remote.repair.port = 10002
+ * sink.name = "ROC Sink"
+ * sink.props = {
+ * node.name = "roc-sink"
+ * }
+ * }
+ * }
+ *]
+ *\endcode
+ *
+ */
+
+#define NAME "roc-sink"
+
+PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME);
+#define PW_LOG_TOPIC_DEFAULT mod_topic
+
+struct module_roc_sink_data {
+ struct pw_impl_module *module;
+ struct spa_hook module_listener;
+ struct pw_properties *props;
+ struct pw_context *module_context;
+
+ struct pw_core *core;
+ struct spa_hook core_listener;
+ struct spa_hook core_proxy_listener;
+
+ struct pw_stream *capture;
+ struct spa_hook capture_listener;
+ struct pw_properties *capture_props;
+
+ unsigned int do_disconnect:1;
+
+ roc_endpoint *remote_source_addr;
+ roc_endpoint *remote_repair_addr;
+ roc_context *context;
+ roc_sender *sender;
+
+ roc_fec_encoding fec_code;
+ uint32_t rate;
+ char *remote_ip;
+ int remote_source_port;
+ int remote_repair_port;
+};
+
+static void stream_destroy(void *d)
+{
+ struct module_roc_sink_data *data = d;
+ spa_hook_remove(&data->capture_listener);
+ data->capture = NULL;
+}
+
+static void capture_process(void *data)
+{
+ struct module_roc_sink_data *impl = data;
+ struct pw_buffer *in;
+ struct spa_data *d;
+ roc_frame frame;
+ uint32_t i, size, offset;
+
+ if ((in = pw_stream_dequeue_buffer(impl->capture)) == NULL) {
+ pw_log_debug("Out of capture buffers: %m");
+ return;
+ }
+
+ for (i = 0; i < in->buffer->n_datas; i++) {
+ d = &in->buffer->datas[i];
+
+ offset = SPA_MIN(d->chunk->offset, d->maxsize);
+ size = SPA_MIN(d->maxsize - offset, d->chunk->size);
+
+ while (size > 0) {
+ spa_zero(frame);
+
+ frame.samples = SPA_MEMBER(d->data, offset, void);
+ frame.samples_size = size;
+
+ if (roc_sender_write(impl->sender, &frame) != 0) {
+ pw_log_warn("Failed to write to roc sink");
+ break;
+ }
+
+ offset += frame.samples_size;
+ size -= frame.samples_size;
+ }
+ }
+ pw_stream_queue_buffer(impl->capture, in);
+}
+
+static void on_core_error(void *d, uint32_t id, int seq, int res, const char *message)
+{
+ struct module_roc_sink_data *data = d;
+
+ pw_log_error("error id:%u seq:%d res:%d (%s): %s",
+ id, seq, res, spa_strerror(res), message);
+
+ if (id == PW_ID_CORE && res == -EPIPE)
+ pw_impl_module_schedule_destroy(data->module);
+}
+
+static const struct pw_core_events core_events = {
+ PW_VERSION_CORE_EVENTS,
+ .error = on_core_error,
+};
+
+static void on_stream_state_changed(void *d, enum pw_stream_state old,
+ enum pw_stream_state state, const char *error)
+{
+ struct module_roc_sink_data *data = d;
+
+ switch (state) {
+ case PW_STREAM_STATE_UNCONNECTED:
+ pw_log_info("stream disconnected, unloading");
+ pw_impl_module_schedule_destroy(data->module);
+ break;
+ case PW_STREAM_STATE_ERROR:
+ pw_log_error("stream error: %s", error);
+ break;
+ default:
+ break;
+ }
+}
+
+static const struct pw_stream_events in_stream_events = {
+ PW_VERSION_STREAM_EVENTS,
+ .destroy = stream_destroy,
+ .state_changed = on_stream_state_changed,
+ .process = capture_process
+};
+
+static void core_destroy(void *d)
+{
+ struct module_roc_sink_data *data = d;
+ spa_hook_remove(&data->core_listener);
+ data->core = NULL;
+ pw_impl_module_schedule_destroy(data->module);
+}
+
+static const struct pw_proxy_events core_proxy_events = {
+ .destroy = core_destroy,
+};
+
+static void impl_destroy(struct module_roc_sink_data *data)
+{
+ if (data->capture)
+ pw_stream_destroy(data->capture);
+ if (data->core && data->do_disconnect)
+ pw_core_disconnect(data->core);
+
+ pw_properties_free(data->capture_props);
+ pw_properties_free(data->props);
+
+ if (data->sender)
+ roc_sender_close(data->sender);
+ if (data->context)
+ roc_context_close(data->context);
+
+ if (data->remote_source_addr)
+ (void) roc_endpoint_deallocate(data->remote_source_addr);
+ if (data->remote_repair_addr)
+ (void) roc_endpoint_deallocate(data->remote_repair_addr);
+
+ free(data->remote_ip);
+ free(data);
+}
+
+static void module_destroy(void *d)
+{
+ struct module_roc_sink_data *data = d;
+ spa_hook_remove(&data->module_listener);
+ impl_destroy(data);
+}
+
+static const struct pw_impl_module_events module_events = {
+ PW_VERSION_IMPL_MODULE_EVENTS,
+ .destroy = module_destroy,
+};
+
+static int roc_sink_setup(struct module_roc_sink_data *data)
+{
+ roc_context_config context_config;
+ roc_sender_config sender_config;
+ struct spa_audio_info_raw info = { 0 };
+ const struct spa_pod *params[1];
+ struct spa_pod_builder b;
+ uint32_t n_params;
+ uint8_t buffer[1024];
+ int res;
+ roc_protocol audio_proto, repair_proto;
+
+ memset(&context_config, 0, sizeof(context_config));
+
+ res = roc_context_open(&context_config, &data->context);
+ if (res) {
+ pw_log_error("failed to create roc context: %d", res);
+ return -EINVAL;
+ }
+
+ memset(&sender_config, 0, sizeof(sender_config));
+
+ sender_config.frame_sample_rate = data->rate;
+ sender_config.frame_channels = ROC_CHANNEL_SET_STEREO;
+ sender_config.frame_encoding = ROC_FRAME_ENCODING_PCM_FLOAT;
+ sender_config.fec_encoding = data->fec_code;
+
+ info.rate = data->rate;
+
+ /* Fixed to be the same as ROC sender config above */
+ info.channels = 2;
+ info.format = SPA_AUDIO_FORMAT_F32;
+ info.position[0] = SPA_AUDIO_CHANNEL_FL;
+ info.position[1] = SPA_AUDIO_CHANNEL_FR;
+
+ pw_properties_setf(data->capture_props, PW_KEY_NODE_RATE, "1/%d", info.rate);
+
+ res = roc_sender_open(data->context, &sender_config, &data->sender);
+ if (res) {
+ pw_log_error("failed to create roc sender: %d", res);
+ return -EINVAL;
+ }
+
+ switch (data->fec_code) {
+ case ROC_FEC_ENCODING_DEFAULT:
+ case ROC_FEC_ENCODING_RS8M:
+ audio_proto = ROC_PROTO_RTP_RS8M_SOURCE;
+ repair_proto = ROC_PROTO_RS8M_REPAIR;
+ break;
+ case ROC_FEC_ENCODING_LDPC_STAIRCASE:
+ audio_proto = ROC_PROTO_RTP_LDPC_SOURCE;
+ repair_proto = ROC_PROTO_LDPC_REPAIR;
+ break;
+ default:
+ audio_proto = ROC_PROTO_RTP;
+ repair_proto = 0;
+ break;
+ }
+
+ res = pw_roc_create_endpoint(&data->remote_source_addr, audio_proto, data->remote_ip, data->remote_source_port);
+ if (res < 0) {
+ pw_log_warn("failed to create source endpoint: %s", spa_strerror(res));
+ return res;
+ }
+
+ if (roc_sender_connect(data->sender, ROC_SLOT_DEFAULT, ROC_INTERFACE_AUDIO_SOURCE,
+ data->remote_source_addr) != 0) {
+ pw_log_error("can't connect roc sender to remote source address");
+ return -EINVAL;
+ }
+
+ if (repair_proto != 0) {
+ res = pw_roc_create_endpoint(&data->remote_repair_addr, repair_proto, data->remote_ip, data->remote_repair_port);
+ if (res < 0) {
+ pw_log_error("failed to create repair endpoint: %s", spa_strerror(res));
+ return res;
+ }
+
+ if (roc_sender_connect(data->sender, ROC_SLOT_DEFAULT, ROC_INTERFACE_AUDIO_REPAIR,
+ data->remote_repair_addr) != 0) {
+ pw_log_error("can't connect roc sender to remote repair address");
+ return -EINVAL;
+ }
+ }
+
+ data->capture = pw_stream_new(data->core,
+ "roc-sink capture", data->capture_props);
+ data->capture_props = NULL;
+ if (data->capture == NULL)
+ return -errno;
+
+ pw_stream_add_listener(data->capture,
+ &data->capture_listener,
+ &in_stream_events, data);
+
+ n_params = 0;
+ spa_pod_builder_init(&b, buffer, sizeof(buffer));
+ params[n_params++] = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat,
+ &info);
+
+ if ((res = pw_stream_connect(data->capture,
+ PW_DIRECTION_INPUT,
+ PW_ID_ANY,
+ PW_STREAM_FLAG_MAP_BUFFERS |
+ PW_STREAM_FLAG_RT_PROCESS,
+ params, n_params)) < 0)
+ return res;
+
+ return 0;
+}
+
+static const struct spa_dict_item module_roc_sink_info[] = {
+ { PW_KEY_MODULE_AUTHOR, "Sanchayan Maity <sanchayan@asymptotic.io>" },
+ { PW_KEY_MODULE_DESCRIPTION, "roc sink" },
+ { PW_KEY_MODULE_USAGE, "sink.name=<name for the sink> "
+ "local.ip=<local sender ip> "
+ "fec.code=<empty>|disable|rs8m|ldpc "
+ "remote.ip=<remote receiver ip> "
+ "remote.source.port=<remote receiver port for source packets> "
+ "remote.repair.port=<remote receiver port for repair packets> "
+ "sink.props= { key=val ... } " },
+ { PW_KEY_MODULE_VERSION, PACKAGE_VERSION },
+};
+
+SPA_EXPORT
+int pipewire__module_init(struct pw_impl_module *module, const char *args)
+{
+ struct pw_context *context = pw_impl_module_get_context(module);
+ struct module_roc_sink_data *data;
+ struct pw_properties *props = NULL, *capture_props = NULL;
+ const char *str;
+ int res = 0;
+
+ PW_LOG_TOPIC_INIT(mod_topic);
+
+ data = calloc(1, sizeof(struct module_roc_sink_data));
+ if (data == NULL)
+ return -errno;
+
+ if (args == NULL)
+ args = "";
+
+ props = pw_properties_new_string(args);
+ if (props == NULL) {
+ res = -errno;
+ pw_log_error( "can't create properties: %m");
+ goto out;
+ }
+ data->props = props;
+
+ capture_props = pw_properties_new(NULL, NULL);
+ if (capture_props == NULL) {
+ res = -errno;
+ pw_log_error( "can't create properties: %m");
+ goto out;
+ }
+ data->capture_props = capture_props;
+
+ data->module = module;
+ data->module_context = context;
+
+ if ((str = pw_properties_get(props, "sink.name")) != NULL) {
+ pw_properties_set(capture_props, PW_KEY_NODE_NAME, str);
+ pw_properties_set(props, "sink.name", NULL);
+ }
+
+ if ((str = pw_properties_get(props, "sink.props")) != NULL)
+ pw_properties_update_string(capture_props, str, strlen(str));
+
+ if (pw_properties_get(capture_props, PW_KEY_NODE_NAME) == NULL)
+ pw_properties_set(capture_props, PW_KEY_NODE_NAME, "roc-sink");
+ if (pw_properties_get(capture_props, PW_KEY_NODE_DESCRIPTION) == NULL)
+ pw_properties_set(capture_props, PW_KEY_NODE_DESCRIPTION, "ROC Sink");
+ if (pw_properties_get(capture_props, PW_KEY_NODE_VIRTUAL) == NULL)
+ pw_properties_set(capture_props, PW_KEY_NODE_VIRTUAL, "true");
+ if (pw_properties_get(capture_props, PW_KEY_NODE_NETWORK) == NULL)
+ pw_properties_set(capture_props, PW_KEY_NODE_NETWORK, "true");
+ if ((str = pw_properties_get(capture_props, PW_KEY_MEDIA_CLASS)) == NULL)
+ pw_properties_set(capture_props, PW_KEY_MEDIA_CLASS, "Audio/Sink");
+
+ data->rate = pw_properties_get_uint32(capture_props, PW_KEY_AUDIO_RATE, data->rate);
+ if (data->rate == 0)
+ data->rate = PW_ROC_DEFAULT_RATE;
+
+ if ((str = pw_properties_get(props, "remote.ip")) != NULL) {
+ data->remote_ip = strdup(str);
+ pw_properties_set(props, "remote.ip", NULL);
+ } else {
+ pw_log_error("Remote IP not specified");
+ res = -EINVAL;
+ goto out;
+ }
+
+ if ((str = pw_properties_get(props, "remote.source.port")) != NULL) {
+ data->remote_source_port = pw_properties_parse_int(str);
+ pw_properties_set(props, "remote.source.port", NULL);
+ } else {
+ data->remote_source_port = PW_ROC_DEFAULT_SOURCE_PORT;
+ }
+
+ if ((str = pw_properties_get(props, "remote.repair.port")) != NULL) {
+ data->remote_repair_port = pw_properties_parse_int(str);
+ pw_properties_set(props, "remote.repair.port", NULL);
+ } else {
+ data->remote_repair_port = PW_ROC_DEFAULT_REPAIR_PORT;
+ }
+ if ((str = pw_properties_get(props, "fec.code")) != NULL) {
+ if (pw_roc_parse_fec_encoding(&data->fec_code, str)) {
+ pw_log_error("Invalid fec code %s, using default", str);
+ data->fec_code = ROC_FEC_ENCODING_DEFAULT;
+ }
+ pw_log_info("using fec.code %s %d", str, data->fec_code);
+ pw_properties_set(props, "fec.code", NULL);
+ } else {
+ data->fec_code = ROC_FEC_ENCODING_DEFAULT;
+ }
+
+
+ data->core = pw_context_get_object(data->module_context, PW_TYPE_INTERFACE_Core);
+ if (data->core == NULL) {
+ str = pw_properties_get(props, PW_KEY_REMOTE_NAME);
+ data->core = pw_context_connect(data->module_context,
+ pw_properties_new(
+ PW_KEY_REMOTE_NAME, str,
+ NULL),
+ 0);
+ data->do_disconnect = true;
+ }
+ if (data->core == NULL) {
+ res = -errno;
+ pw_log_error("can't connect: %m");
+ goto out;
+ }
+
+ pw_proxy_add_listener((struct pw_proxy*)data->core,
+ &data->core_proxy_listener,
+ &core_proxy_events, data);
+ pw_core_add_listener(data->core,
+ &data->core_listener,
+ &core_events, data);
+
+ if ((res = roc_sink_setup(data)) < 0)
+ goto out;
+
+ pw_impl_module_add_listener(module, &data->module_listener, &module_events, data);
+
+ pw_impl_module_update_properties(module, &SPA_DICT_INIT_ARRAY(module_roc_sink_info));
+
+ pw_log_info("Successfully loaded module-roc-sink");
+
+ return 0;
+
+out:
+ impl_destroy(data);
+ return res;
+}
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