Prepare for sound. Fix game name being gsr-ui on wayland in some cases when saving video when the ui is open

src/AudioPlayer.cpp

@@ -0,0 +1,87 @@
+#include "../include/AudioPlayer.hpp"
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <pulse/simple.h>
+#include <pulse/error.h>
+
+#define BUFSIZE 4096
+
+namespace gsr {
+    AudioPlayer::~AudioPlayer() {
+        if(thread.joinable()) {
+            stop_playing_audio = true;
+            thread.join();
+        }
+
+        if(audio_file_fd > 0)
+            close(audio_file_fd);
+    }
+
+    bool AudioPlayer::play(const char *filepath) {
+        if(thread.joinable()) {
+            stop_playing_audio = true;
+            thread.join();
+        }
+
+        stop_playing_audio = false;
+        audio_file_fd = open(filepath, O_RDONLY);
+        if(audio_file_fd == -1)
+            return false;
+
+        thread = std::thread([this]() {
+            const pa_sample_spec ss = {
+                .format = PA_SAMPLE_S16LE,
+                .rate = 48000,
+                .channels = 2
+            };
+
+            pa_simple *s = NULL;
+            int error;
+
+            /* Create a new playback stream */
+            if(!(s = pa_simple_new(NULL, "gsr-ui-audio-playback", PA_STREAM_PLAYBACK, NULL, "playback", &ss, NULL, NULL, &error))) {
+                fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
+                goto finish;
+            }
+
+            uint8_t buf[BUFSIZE];
+            for(;;) {
+                ssize_t r;
+
+                if(stop_playing_audio)
+                    goto finish;
+
+                if((r = read(audio_file_fd, buf, sizeof(buf))) <= 0) {
+                    if(r == 0) /* EOF */
+                        break;
+
+                    fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
+                    goto finish;
+                }
+
+                if(pa_simple_write(s, buf, (size_t) r, &error) < 0) {
+                    fprintf(stderr, __FILE__": pa_simple_write() failed: %s\n", pa_strerror(error));
+                    goto finish;
+                }
+            }
+
+            if(pa_simple_drain(s, &error) < 0) {
+                fprintf(stderr, __FILE__": pa_simple_drain() failed: %s\n", pa_strerror(error));
+                goto finish;
+            }
+
+            finish:
+            if(s)
+                pa_simple_free(s);
+
+            close(audio_file_fd);
+            audio_file_fd = -1;
+        });
+
+        return true;
+    }
+}