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https://gitlab.freedesktop.org/pipewire/pipewire
synced 2024-10-06 16:09:43 +00:00
pulse-server: Implement module-pipe-sink
This commit is contained in:
parent
c50c8d2be9
commit
d8f98df6ed
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@ -139,6 +139,7 @@ pipewire_module_protocol_pulse = shared_library('pipewire-module-protocol-pulse'
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'module-protocol-pulse/modules/module-remap-sink.c',
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'module-protocol-pulse/modules/module-remap-source.c',
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'module-protocol-pulse/modules/module-simple-protocol-tcp.c',
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'module-protocol-pulse/modules/module-pipe-sink.c',
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],
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c_args : pipewire_module_c_args,
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include_directories : [configinc, spa_inc],
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@ -212,6 +212,7 @@ static const struct module_info module_list[] = {
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{ "module-ladspa-source", create_module_ladspa_source, },
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{ "module-loopback", create_module_loopback, },
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{ "module-null-sink", create_module_null_sink, },
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{ "module-pipe-sink", create_module_pipe_sink, },
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{ "module-native-protocol-tcp", create_module_native_protocol_tcp, },
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{ "module-remap-sink", create_module_remap_sink, },
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{ "module-remap-source", create_module_remap_source, },
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342
src/modules/module-protocol-pulse/modules/module-pipe-sink.c
Normal file
342
src/modules/module-protocol-pulse/modules/module-pipe-sink.c
Normal file
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@ -0,0 +1,342 @@
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/* PipeWire
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*
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* Copyright © 2021 Wim Taymans <wim.taymans@gmail.com>
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* Copyright © 2021 Sanchayan Maity <sanchayan@asymptotic.io>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <pipewire/pipewire.h>
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#include <pipewire/private.h>
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#include <spa/param/audio/format-utils.h>
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#include <spa/utils/hook.h>
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#include "../defs.h"
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#include "../module.h"
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#include "registry.h"
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#define DEFAULT_FILE_NAME "/tmp/music.output"
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#define DEFAULT_SINK_NAME "fifo_output"
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struct module_pipesink_data {
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struct module *module;
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struct pw_core *core;
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struct pw_stream *capture;
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struct spa_hook core_listener;
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struct spa_hook capture_listener;
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struct pw_properties *capture_props;
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struct spa_audio_info_raw info;
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char *filename;
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int fd;
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bool do_unlink_fifo;
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};
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static void capture_process(void *data)
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{
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struct module_pipesink_data *impl = data;
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struct pw_buffer *in;
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struct spa_data *d;
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uint32_t i, size, offset;
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int written;
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if ((in = pw_stream_dequeue_buffer(impl->capture)) == NULL) {
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pw_log_warn("Out of capture buffers: %m");
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return;
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}
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for (i = 0; i < in->buffer->n_datas; i++) {
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d = &in->buffer->datas[i];
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size = d->chunk->size;
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offset = d->chunk->offset;
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while (size > 0) {
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written = write(impl->fd, SPA_MEMBER(d->data, offset, void), size);
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if (written < 0) {
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if (errno == EINTR) {
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/* retry if interrupted */
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continue;
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} else if (errno == EAGAIN || errno == EWOULDBLOCK) {
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/* Don't continue writing */
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break;
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} else {
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pw_log_warn("Failed to write to pipe sink");
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}
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}
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offset += written;
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size -= written;
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}
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}
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pw_stream_queue_buffer(impl->capture, in);
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}
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static void on_core_error(void *data, uint32_t id, int seq, int res, const char *message)
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{
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struct module_pipesink_data *d = data;
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pw_log_error("error id:%u seq:%d res:%d (%s): %s",
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id, seq, res, spa_strerror(res), message);
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if (id == PW_ID_CORE && res == -EPIPE)
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module_schedule_unload(d->module);
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}
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static const struct pw_core_events core_events = {
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PW_VERSION_CORE_EVENTS,
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.error = on_core_error,
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};
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static void on_stream_state_changed(void *data, enum pw_stream_state old,
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enum pw_stream_state state, const char *error)
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{
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struct module_pipesink_data *d = data;
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switch (state) {
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case PW_STREAM_STATE_UNCONNECTED:
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pw_log_info("stream disconnected, unloading");
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module_schedule_unload(d->module);
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break;
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case PW_STREAM_STATE_ERROR:
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pw_log_error("stream error: %s", error);
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break;
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default:
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break;
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}
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}
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static const struct pw_stream_events in_stream_events = {
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PW_VERSION_STREAM_EVENTS,
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.state_changed = on_stream_state_changed,
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.process = capture_process
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};
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static int module_pipesink_load(struct client *client, struct module *module)
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{
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struct module_pipesink_data *data = module->user_data;
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int res;
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uint32_t n_params;
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const struct spa_pod *params[1];
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uint8_t buffer[1024];
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struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
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data->core = pw_context_connect(module->impl->context,
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pw_properties_copy(client->props),
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0);
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if (data->core == NULL)
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return -errno;
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pw_core_add_listener(data->core,
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&data->core_listener,
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&core_events, data);
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data->capture = pw_stream_new(data->core,
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"pipesink capture", data->capture_props);
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data->capture_props = NULL;
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if (data->capture == NULL)
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return -errno;
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pw_stream_add_listener(data->capture,
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&data->capture_listener,
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&in_stream_events, data);
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n_params = 0;
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params[n_params++] = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat,
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&data->info);
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if ((res = pw_stream_connect(data->capture,
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PW_DIRECTION_INPUT,
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PW_ID_ANY,
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PW_STREAM_FLAG_AUTOCONNECT |
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PW_STREAM_FLAG_MAP_BUFFERS |
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PW_STREAM_FLAG_RT_PROCESS,
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params, n_params)) < 0)
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return res;
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pw_log_info("loaded module %p id:%u name:%s", module, module->idx, module->name);
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module_emit_loaded(module, 0);
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return 0;
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}
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static int module_pipesink_unload(struct client *client, struct module *module)
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{
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struct module_pipesink_data *d = module->user_data;
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pw_log_info("unload module %p id:%u name:%s", module, module->idx, module->name);
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if (d->capture_props != NULL)
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pw_properties_free(d->capture_props);
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if (d->capture != NULL)
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pw_stream_destroy(d->capture);
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if (d->core != NULL)
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pw_core_disconnect(d->core);
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if (d->filename) {
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if (d->do_unlink_fifo)
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unlink(d->filename);
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free(d->filename);
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}
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if (d->fd >= 0)
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close(d->fd);
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return 0;
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}
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static const struct module_methods module_pipesink_methods = {
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VERSION_MODULE_METHODS,
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.load = module_pipesink_load,
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.unload = module_pipesink_unload,
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};
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static const struct spa_dict_item module_pipesink_info[] = {
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{ PW_KEY_MODULE_AUTHOR, "Sanchayan Maity <sanchayan@asymptotic.io>" },
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{ PW_KEY_MODULE_DESCRIPTION, "Pipe sink" },
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{ PW_KEY_MODULE_USAGE, "file=<name of the FIFO special file to use> "
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"sink_name=<name for the sink> "
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"format=<sample format> "
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"rate=<sample rate> "
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"channels=<number of channels> "
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"channel_map=<channel map> " },
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{ PW_KEY_MODULE_VERSION, PACKAGE_VERSION },
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};
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struct module *create_module_pipe_sink(struct impl *impl, const char *argument)
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{
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struct module *module;
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struct module_pipesink_data *d;
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struct pw_properties *props = NULL, *capture_props = NULL;
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struct spa_audio_info_raw info = { 0 };
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struct stat st;
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const char *str;
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char *filename = NULL;
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bool do_unlink_fifo;
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int res = 0;
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int fd = -1;
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props = pw_properties_new_dict(&SPA_DICT_INIT_ARRAY(module_pipesink_info));
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capture_props = pw_properties_new(NULL, NULL);
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if (!props || !capture_props) {
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res = -EINVAL;
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goto out;
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}
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if (argument)
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module_args_add_props(props, argument);
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if (module_args_to_audioinfo(impl, props, &info) < 0) {
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res = -EINVAL;
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goto out;
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}
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if ((str = pw_properties_get(props, "format")) != NULL) {
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info.format = format_paname2id(str, strlen(str));
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pw_properties_set(props, "format", NULL);
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}
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if ((str = pw_properties_get(props, "sink_name")) != NULL) {
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pw_properties_set(capture_props, PW_KEY_NODE_NAME, str);
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pw_properties_set(props, "sink_name", NULL);
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} else {
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pw_properties_set(capture_props, PW_KEY_NODE_NAME, DEFAULT_SINK_NAME);
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pw_properties_set(props, "sink_name", NULL);
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}
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if ((str = pw_properties_get(props, "file")) != NULL) {
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filename = strdup(str);
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pw_properties_set(props, "file", NULL);
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} else {
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filename = strdup(DEFAULT_FILE_NAME);
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}
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do_unlink_fifo = false;
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if (mkfifo(filename, 0666) < 0) {
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if (errno != EEXIST) {
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pw_log_error("mkfifo('%s'): %s", filename, spa_strerror(errno));
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goto out;
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}
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} else {
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do_unlink_fifo = true;
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/*
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* Our umask is 077, so the pipe won't be created with the
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* requested permissions. Let's fix the permissions with chmod().
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*/
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if (chmod(filename, 0666) < 0)
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pw_log_warn("chmod('%s'): %s", filename, spa_strerror(errno));
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}
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if ((fd = open(filename, O_RDWR | O_CLOEXEC | O_NONBLOCK, 0)) <= 0) {
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pw_log_error("open('%s'): %s", filename, spa_strerror(errno));
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goto out;
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}
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if (fstat(fd, &st) < 0) {
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pw_log_error("fstat('%s'): %s", filename, spa_strerror(errno));
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goto out;
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}
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if (!S_ISFIFO(st.st_mode)) {
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pw_log_error("'%s' is not a FIFO.", filename);
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goto out;
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}
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if ((str = pw_properties_get(props, PW_KEY_MEDIA_CLASS)) == NULL)
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pw_properties_set(props, PW_KEY_MEDIA_CLASS, "Audio/Sink");
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module = module_new(impl, &module_pipesink_methods, sizeof(*d));
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if (module == NULL) {
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res = -errno;
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goto out;
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}
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module->props = props;
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d = module->user_data;
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d->module = module;
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d->capture_props = capture_props;
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d->info = info;
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d->fd = fd;
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d->filename = filename;
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d->do_unlink_fifo = do_unlink_fifo;
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pw_log_info("Successfully loaded module-pipe-sink");
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return module;
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out:
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if (props)
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pw_properties_free(props);
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if (capture_props)
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pw_properties_free(capture_props);
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if (filename) {
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if (do_unlink_fifo)
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unlink(filename);
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free(filename);
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}
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if (fd >= 0)
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close(fd);
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errno = -res;
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return NULL;
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}
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@ -36,5 +36,6 @@ struct module *create_module_null_sink(struct impl *impl, const char *argument);
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struct module *create_module_remap_sink(struct impl *impl, const char *argument);
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struct module *create_module_remap_source(struct impl *impl, const char *argument);
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struct module *create_module_simple_protocol_tcp(struct impl *impl, const char *argument);
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struct module *create_module_pipe_sink(struct impl *impl, const char *argument);
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#endif
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