648 lines
21 KiB
C++
648 lines
21 KiB
C++
#include "../include/sound.hpp"
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extern "C" {
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#include "../include/utils.h"
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}
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <cmath>
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#include <time.h>
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#include <mutex>
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#include <pulse/pulseaudio.h>
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#include <pulse/mainloop.h>
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#include <pulse/xmalloc.h>
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#include <pulse/error.h>
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#define RECONNECT_TRY_TIMEOUT_SECONDS 0.5
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#define DEVICE_NAME_MAX_SIZE 128
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#define CHECK_DEAD_GOTO(p, rerror, label) \
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do { \
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if (!(p)->context || !PA_CONTEXT_IS_GOOD(pa_context_get_state((p)->context)) || \
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!(p)->stream || !PA_STREAM_IS_GOOD(pa_stream_get_state((p)->stream))) { \
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if (((p)->context && pa_context_get_state((p)->context) == PA_CONTEXT_FAILED) || \
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((p)->stream && pa_stream_get_state((p)->stream) == PA_STREAM_FAILED)) { \
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if (rerror) \
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*(rerror) = pa_context_errno((p)->context); \
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} else \
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if (rerror) \
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*(rerror) = PA_ERR_BADSTATE; \
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goto label; \
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} \
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} while(false);
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enum class DeviceType {
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STANDARD,
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DEFAULT_OUTPUT,
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DEFAULT_INPUT
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};
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struct pa_handle {
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pa_context *context;
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pa_stream *stream;
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pa_mainloop *mainloop;
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const void *read_data;
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size_t read_index, read_length;
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uint8_t *output_data;
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size_t output_index, output_length;
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int operation_success;
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double latency_seconds;
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pa_buffer_attr attr;
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pa_sample_spec ss;
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std::mutex reconnect_mutex;
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DeviceType device_type;
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char stream_name[256];
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bool reconnect;
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double reconnect_last_tried_seconds;
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char device_name[DEVICE_NAME_MAX_SIZE];
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char default_output_device_name[DEVICE_NAME_MAX_SIZE];
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char default_input_device_name[DEVICE_NAME_MAX_SIZE];
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};
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static void pa_sound_device_free(pa_handle *p) {
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assert(p);
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if (p->stream) {
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pa_stream_unref(p->stream);
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p->stream = NULL;
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}
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if (p->context) {
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pa_context_disconnect(p->context);
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pa_context_unref(p->context);
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p->context = NULL;
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}
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if (p->mainloop) {
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pa_mainloop_free(p->mainloop);
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p->mainloop = NULL;
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}
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if (p->output_data) {
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free(p->output_data);
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p->output_data = NULL;
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}
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pa_xfree(p);
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}
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static void subscribe_update_default_devices(pa_context*, const pa_server_info *server_info, void *userdata) {
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pa_handle *handle = (pa_handle*)userdata;
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std::lock_guard<std::mutex> lock(handle->reconnect_mutex);
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if(server_info->default_sink_name) {
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// TODO: Size check
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snprintf(handle->default_output_device_name, sizeof(handle->default_output_device_name), "%s.monitor", server_info->default_sink_name);
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if(handle->device_type == DeviceType::DEFAULT_OUTPUT && strcmp(handle->device_name, handle->default_output_device_name) != 0) {
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handle->reconnect = true;
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handle->reconnect_last_tried_seconds = clock_get_monotonic_seconds();
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// TODO: Size check
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snprintf(handle->device_name, sizeof(handle->device_name), "%s", handle->default_output_device_name);
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}
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}
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if(server_info->default_source_name) {
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// TODO: Size check
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snprintf(handle->default_input_device_name, sizeof(handle->default_input_device_name), "%s", server_info->default_source_name);
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if(handle->device_type == DeviceType::DEFAULT_INPUT && strcmp(handle->device_name, handle->default_input_device_name) != 0) {
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handle->reconnect = true;
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handle->reconnect_last_tried_seconds = clock_get_monotonic_seconds();
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// TODO: Size check
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snprintf(handle->device_name, sizeof(handle->device_name), "%s", handle->default_input_device_name);
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}
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}
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}
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static void subscribe_cb(pa_context *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
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(void)idx;
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pa_handle *handle = (pa_handle*)userdata;
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if((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SERVER) {
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pa_operation *pa = pa_context_get_server_info(c, subscribe_update_default_devices, handle);
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if(pa)
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pa_operation_unref(pa);
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}
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}
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static void store_default_devices(pa_context*, const pa_server_info *server_info, void *userdata) {
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pa_handle *handle = (pa_handle*)userdata;
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if(server_info->default_sink_name)
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snprintf(handle->default_output_device_name, sizeof(handle->default_output_device_name), "%s.monitor", server_info->default_sink_name);
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if(server_info->default_source_name)
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snprintf(handle->default_input_device_name, sizeof(handle->default_input_device_name), "%s", server_info->default_source_name);
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}
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static bool startup_get_default_devices(pa_handle *p, const char *device_name) {
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pa_operation *pa = pa_context_get_server_info(p->context, store_default_devices, p);
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while(pa) {
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pa_operation_state state = pa_operation_get_state(pa);
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if(state == PA_OPERATION_DONE) {
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pa_operation_unref(pa);
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break;
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} else if(state == PA_OPERATION_CANCELLED) {
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pa_operation_unref(pa);
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return false;
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}
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pa_mainloop_iterate(p->mainloop, 1, NULL);
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}
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if(p->default_output_device_name[0] == '\0') {
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fprintf(stderr, "gsr error: failed to find default audio output device\n");
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return false;
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}
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if(strcmp(device_name, "default_output") == 0) {
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snprintf(p->device_name, sizeof(p->device_name), "%s", p->default_output_device_name);
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p->device_type = DeviceType::DEFAULT_OUTPUT;
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} else if(strcmp(device_name, "default_input") == 0) {
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snprintf(p->device_name, sizeof(p->device_name), "%s", p->default_input_device_name);
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p->device_type = DeviceType::DEFAULT_INPUT;
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} else {
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snprintf(p->device_name, sizeof(p->device_name), "%s", device_name);
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p->device_type = DeviceType::STANDARD;
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}
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return true;
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}
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static pa_handle* pa_sound_device_new(const char *server,
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const char *name,
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const char *device_name,
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const char *stream_name,
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const pa_sample_spec *ss,
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const pa_buffer_attr *attr,
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int *rerror) {
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pa_handle *p;
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int error = PA_ERR_INTERNAL;
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pa_operation *pa = NULL;
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p = pa_xnew0(pa_handle, 1);
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p->attr = *attr;
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p->ss = *ss;
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snprintf(p->stream_name, sizeof(p->stream_name), "%s", stream_name);
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p->reconnect = true;
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p->reconnect_last_tried_seconds = clock_get_monotonic_seconds() - (RECONNECT_TRY_TIMEOUT_SECONDS * 1000.0 * 2.0);
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p->default_output_device_name[0] = '\0';
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p->default_input_device_name[0] = '\0';
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p->device_type = DeviceType::STANDARD;
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const int buffer_size = attr->fragsize;
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void *buffer = malloc(buffer_size);
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if(!buffer) {
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fprintf(stderr, "gsr error: failed to allocate buffer for audio\n");
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*rerror = -1;
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return NULL;
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}
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p->output_data = (uint8_t*)buffer;
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p->output_length = buffer_size;
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p->output_index = 0;
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pa_proplist *proplist = pa_proplist_new();
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pa_proplist_sets(proplist, PA_PROP_MEDIA_ROLE, "production");
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if(strcmp(device_name, "") == 0) {
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pa_proplist_sets(proplist, "node.autoconnect", "false");
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pa_proplist_sets(proplist, "node.dont-reconnect", "true");
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}
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if (!(p->mainloop = pa_mainloop_new()))
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goto fail;
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if (!(p->context = pa_context_new_with_proplist(pa_mainloop_get_api(p->mainloop), name, proplist)))
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goto fail;
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if (pa_context_connect(p->context, server, PA_CONTEXT_NOFLAGS, NULL) < 0) {
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error = pa_context_errno(p->context);
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goto fail;
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}
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for (;;) {
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pa_context_state_t state = pa_context_get_state(p->context);
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if (state == PA_CONTEXT_READY)
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break;
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if (!PA_CONTEXT_IS_GOOD(state)) {
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error = pa_context_errno(p->context);
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goto fail;
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}
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pa_mainloop_iterate(p->mainloop, 1, NULL);
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}
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if(!startup_get_default_devices(p, device_name))
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goto fail;
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pa_context_set_subscribe_callback(p->context, subscribe_cb, p);
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pa = pa_context_subscribe(p->context, PA_SUBSCRIPTION_MASK_SERVER, NULL, NULL);
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if(pa)
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pa_operation_unref(pa);
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pa_proplist_free(proplist);
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return p;
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fail:
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if (rerror)
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*rerror = error;
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pa_sound_device_free(p);
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pa_proplist_free(proplist);
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return NULL;
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}
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static bool pa_sound_device_should_reconnect(pa_handle *p, double now, char *device_name, size_t device_name_size) {
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std::lock_guard<std::mutex> lock(p->reconnect_mutex);
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if(!p->reconnect && (!p->stream || !PA_STREAM_IS_GOOD(pa_stream_get_state(p->stream)))) {
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p->reconnect = true;
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p->reconnect_last_tried_seconds = now;
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}
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if(p->reconnect && now - p->reconnect_last_tried_seconds >= RECONNECT_TRY_TIMEOUT_SECONDS) {
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p->reconnect_last_tried_seconds = now;
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// TODO: Size check
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snprintf(device_name, device_name_size, "%s", p->device_name);
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return true;
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}
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return false;
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}
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static bool pa_sound_device_handle_reconnect(pa_handle *p, char *device_name, size_t device_name_size, double now) {
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int r;
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if(!pa_sound_device_should_reconnect(p, now, device_name, device_name_size))
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return true;
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if(p->stream) {
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pa_stream_disconnect(p->stream);
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pa_stream_unref(p->stream);
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p->stream = NULL;
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}
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if(!(p->stream = pa_stream_new(p->context, p->stream_name, &p->ss, NULL))) {
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//pa_context_errno(p->context);
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return false;
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}
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r = pa_stream_connect_record(p->stream, device_name, &p->attr,
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(pa_stream_flags_t)(PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_ADJUST_LATENCY|PA_STREAM_AUTO_TIMING_UPDATE));
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if(r < 0) {
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//pa_context_errno(p->context);
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return false;
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}
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pa_mainloop_iterate(p->mainloop, 0, NULL);
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std::lock_guard<std::mutex> lock(p->reconnect_mutex);
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p->reconnect = false;
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return true;
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}
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static int pa_sound_device_read(pa_handle *p, double timeout_seconds) {
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assert(p);
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const double start_time = clock_get_monotonic_seconds();
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char device_name[DEVICE_NAME_MAX_SIZE];
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bool success = false;
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int r = 0;
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int *rerror = &r;
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pa_usec_t latency = 0;
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int negative = 0;
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pa_mainloop_iterate(p->mainloop, 0, NULL);
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if(!pa_sound_device_handle_reconnect(p, device_name, sizeof(device_name), start_time) || !p->stream)
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goto fail;
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if(pa_stream_get_state(p->stream) != PA_STREAM_READY)
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goto fail;
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CHECK_DEAD_GOTO(p, rerror, fail);
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while (p->output_index < p->output_length) {
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if(clock_get_monotonic_seconds() - start_time >= timeout_seconds)
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return -1;
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if(!p->read_data) {
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pa_mainloop_prepare(p->mainloop, 1 * 1000); // 1 ms
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pa_mainloop_poll(p->mainloop);
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pa_mainloop_dispatch(p->mainloop);
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if(pa_stream_peek(p->stream, &p->read_data, &p->read_length) < 0)
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goto fail;
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if(!p->read_data && p->read_length == 0)
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continue;
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if(!p->read_data && p->read_length > 0) {
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// There is a hole in the stream :( drop it. Maybe we should generate silence instead? TODO
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if(pa_stream_drop(p->stream) != 0)
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goto fail;
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continue;
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}
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if(p->read_length <= 0) {
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p->read_data = NULL;
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if(pa_stream_drop(p->stream) != 0)
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goto fail;
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CHECK_DEAD_GOTO(p, rerror, fail);
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continue;
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}
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pa_operation_unref(pa_stream_update_timing_info(p->stream, NULL, NULL));
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// TODO: Deal with one pa_stream_peek not being enough. In that case we need to add multiple of these together(?)
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if(pa_stream_get_latency(p->stream, &latency, &negative) >= 0) {
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p->latency_seconds = negative ? -(double)latency : latency;
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if(p->latency_seconds < 0.0)
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p->latency_seconds = 0.0;
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p->latency_seconds *= 0.0000001;
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}
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}
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const size_t space_free_in_output_buffer = p->output_length - p->output_index;
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if(space_free_in_output_buffer < p->read_length) {
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memcpy(p->output_data + p->output_index, (const uint8_t*)p->read_data + p->read_index, space_free_in_output_buffer);
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p->output_index = 0;
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p->read_index += space_free_in_output_buffer;
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p->read_length -= space_free_in_output_buffer;
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break;
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} else {
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memcpy(p->output_data + p->output_index, (const uint8_t*)p->read_data + p->read_index, p->read_length);
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p->output_index += p->read_length;
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p->read_data = NULL;
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p->read_length = 0;
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p->read_index = 0;
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if(pa_stream_drop(p->stream) != 0)
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goto fail;
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if(p->output_index == p->output_length) {
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p->output_index = 0;
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break;
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}
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}
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}
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success = true;
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fail:
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return success ? 0 : -1;
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}
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static pa_sample_format_t audio_format_to_pulse_audio_format(AudioFormat audio_format) {
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switch(audio_format) {
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case S16: return PA_SAMPLE_S16LE;
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case S32: return PA_SAMPLE_S32LE;
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case F32: return PA_SAMPLE_FLOAT32LE;
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}
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assert(false);
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return PA_SAMPLE_S16LE;
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}
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static int audio_format_to_get_bytes_per_sample(AudioFormat audio_format) {
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switch(audio_format) {
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case S16: return 2;
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case S32: return 4;
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case F32: return 4;
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}
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assert(false);
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return 2;
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}
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int sound_device_get_by_name(SoundDevice *device, const char *node_name, const char *device_name, const char *description, unsigned int num_channels, unsigned int period_frame_size, AudioFormat audio_format) {
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pa_sample_spec ss;
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ss.format = audio_format_to_pulse_audio_format(audio_format);
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ss.rate = 48000;
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ss.channels = num_channels;
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pa_buffer_attr buffer_attr;
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buffer_attr.fragsize = period_frame_size * audio_format_to_get_bytes_per_sample(audio_format) * num_channels; // 2/4 bytes/sample, @num_channels channels
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buffer_attr.tlength = -1;
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buffer_attr.prebuf = -1;
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buffer_attr.minreq = -1;
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buffer_attr.maxlength = buffer_attr.fragsize;
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int error = 0;
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pa_handle *handle = pa_sound_device_new(nullptr, node_name, device_name, description, &ss, &buffer_attr, &error);
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if(!handle) {
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fprintf(stderr, "gsr error: pa_sound_device_new() failed: %s. Audio input device %s might not be valid\n", pa_strerror(error), device_name);
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return -1;
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}
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device->handle = handle;
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device->frames = period_frame_size;
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return 0;
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}
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void sound_device_close(SoundDevice *device) {
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if(device->handle)
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pa_sound_device_free((pa_handle*)device->handle);
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device->handle = NULL;
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}
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int sound_device_read_next_chunk(SoundDevice *device, void **buffer, double timeout_sec, double *latency_seconds) {
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pa_handle *pa = (pa_handle*)device->handle;
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if(pa_sound_device_read(pa, timeout_sec) < 0) {
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//fprintf(stderr, "pa_simple_read() failed: %s\n", pa_strerror(error));
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*latency_seconds = 0.0;
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return -1;
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}
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*buffer = pa->output_data;
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*latency_seconds = pa->latency_seconds;
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return device->frames;
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}
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static void pa_state_cb(pa_context *c, void *userdata) {
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pa_context_state state = pa_context_get_state(c);
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int *pa_ready = (int*)userdata;
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switch(state) {
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case PA_CONTEXT_UNCONNECTED:
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case PA_CONTEXT_CONNECTING:
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case PA_CONTEXT_AUTHORIZING:
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case PA_CONTEXT_SETTING_NAME:
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default:
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break;
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case PA_CONTEXT_FAILED:
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case PA_CONTEXT_TERMINATED:
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*pa_ready = 2;
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|
break;
|
|
case PA_CONTEXT_READY:
|
|
*pa_ready = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void pa_sourcelist_cb(pa_context*, const pa_source_info *source_info, int eol, void *userdata) {
|
|
if(eol > 0)
|
|
return;
|
|
|
|
AudioDevices *audio_devices = (AudioDevices*)userdata;
|
|
audio_devices->audio_inputs.push_back({ source_info->name, source_info->description });
|
|
}
|
|
|
|
static void pa_server_info_cb(pa_context*, const pa_server_info *server_info, void *userdata) {
|
|
AudioDevices *audio_devices = (AudioDevices*)userdata;
|
|
if(server_info->default_sink_name)
|
|
audio_devices->default_output = std::string(server_info->default_sink_name) + ".monitor";
|
|
if(server_info->default_source_name)
|
|
audio_devices->default_input = server_info->default_source_name;
|
|
}
|
|
|
|
static void server_info_callback(pa_context*, const pa_server_info *server_info, void *userdata) {
|
|
bool *is_server_pipewire = (bool*)userdata;
|
|
if(server_info->server_name && strstr(server_info->server_name, "PipeWire"))
|
|
*is_server_pipewire = true;
|
|
}
|
|
|
|
static void get_pulseaudio_default_inputs(AudioDevices &audio_devices) {
|
|
int state = 0;
|
|
int pa_ready = 0;
|
|
pa_operation *pa_op = NULL;
|
|
|
|
pa_mainloop *main_loop = pa_mainloop_new();
|
|
if(!main_loop)
|
|
return;
|
|
|
|
pa_context *ctx = pa_context_new(pa_mainloop_get_api(main_loop), "gpu-screen-recorder");
|
|
if(pa_context_connect(ctx, NULL, PA_CONTEXT_NOFLAGS, NULL) < 0)
|
|
goto done;
|
|
|
|
pa_context_set_state_callback(ctx, pa_state_cb, &pa_ready);
|
|
|
|
for(;;) {
|
|
// Not ready
|
|
if(pa_ready == 0) {
|
|
pa_mainloop_iterate(main_loop, 1, NULL);
|
|
continue;
|
|
}
|
|
|
|
switch(state) {
|
|
case 0: {
|
|
pa_op = pa_context_get_server_info(ctx, pa_server_info_cb, &audio_devices);
|
|
++state;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Couldn't get connection to the server
|
|
if(pa_ready == 2 || (state == 1 && pa_op && pa_operation_get_state(pa_op) == PA_OPERATION_DONE))
|
|
break;
|
|
|
|
pa_mainloop_iterate(main_loop, 1, NULL);
|
|
}
|
|
|
|
done:
|
|
if(pa_op)
|
|
pa_operation_unref(pa_op);
|
|
pa_context_disconnect(ctx);
|
|
pa_context_unref(ctx);
|
|
pa_mainloop_free(main_loop);
|
|
}
|
|
|
|
AudioDevices get_pulseaudio_inputs() {
|
|
AudioDevices audio_devices;
|
|
int state = 0;
|
|
int pa_ready = 0;
|
|
pa_operation *pa_op = NULL;
|
|
|
|
// TODO: Do this in the same connection below instead of two separate connections
|
|
get_pulseaudio_default_inputs(audio_devices);
|
|
|
|
pa_mainloop *main_loop = pa_mainloop_new();
|
|
if(!main_loop)
|
|
return audio_devices;
|
|
|
|
pa_context *ctx = pa_context_new(pa_mainloop_get_api(main_loop), "gpu-screen-recorder");
|
|
if(pa_context_connect(ctx, NULL, PA_CONTEXT_NOFLAGS, NULL) < 0)
|
|
goto done;
|
|
|
|
pa_context_set_state_callback(ctx, pa_state_cb, &pa_ready);
|
|
|
|
for(;;) {
|
|
// Not ready
|
|
if(pa_ready == 0) {
|
|
pa_mainloop_iterate(main_loop, 1, NULL);
|
|
continue;
|
|
}
|
|
|
|
switch(state) {
|
|
case 0: {
|
|
pa_op = pa_context_get_source_info_list(ctx, pa_sourcelist_cb, &audio_devices);
|
|
++state;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Couldn't get connection to the server
|
|
if(pa_ready == 2 || (state == 1 && pa_op && pa_operation_get_state(pa_op) == PA_OPERATION_DONE))
|
|
break;
|
|
|
|
pa_mainloop_iterate(main_loop, 1, NULL);
|
|
}
|
|
|
|
done:
|
|
if(pa_op)
|
|
pa_operation_unref(pa_op);
|
|
pa_context_disconnect(ctx);
|
|
pa_context_unref(ctx);
|
|
pa_mainloop_free(main_loop);
|
|
return audio_devices;
|
|
}
|
|
|
|
bool pulseaudio_server_is_pipewire() {
|
|
int state = 0;
|
|
int pa_ready = 0;
|
|
pa_operation *pa_op = NULL;
|
|
bool is_server_pipewire = false;
|
|
|
|
pa_mainloop *main_loop = pa_mainloop_new();
|
|
if(!main_loop)
|
|
return is_server_pipewire;
|
|
|
|
pa_context *ctx = pa_context_new(pa_mainloop_get_api(main_loop), "gpu-screen-recorder");
|
|
if(pa_context_connect(ctx, NULL, PA_CONTEXT_NOFLAGS, NULL) < 0)
|
|
goto done;
|
|
|
|
pa_context_set_state_callback(ctx, pa_state_cb, &pa_ready);
|
|
|
|
for(;;) {
|
|
// Not ready
|
|
if(pa_ready == 0) {
|
|
pa_mainloop_iterate(main_loop, 1, NULL);
|
|
continue;
|
|
}
|
|
|
|
switch(state) {
|
|
case 0: {
|
|
pa_op = pa_context_get_server_info(ctx, server_info_callback, &is_server_pipewire);
|
|
++state;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Couldn't get connection to the server
|
|
if(pa_ready == 2 || (state == 1 && pa_op && pa_operation_get_state(pa_op) == PA_OPERATION_DONE))
|
|
break;
|
|
|
|
pa_mainloop_iterate(main_loop, 1, NULL);
|
|
}
|
|
|
|
done:
|
|
if(pa_op)
|
|
pa_operation_unref(pa_op);
|
|
pa_context_disconnect(ctx);
|
|
pa_context_unref(ctx);
|
|
pa_mainloop_free(main_loop);
|
|
return is_server_pipewire;
|
|
}
|