Microphone support

extra/tiny_virtual_mic.c

@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <pulse/simple.h>
+#include <pulse/error.h>
+
+#define BUFSIZE 4096
+
+int main(int argc, char *argv[]) {
+    if (argc != 3) {
+        fprintf(stderr, "Usage: %s <socket_path> <target_device>\n", argv[0]);
+        return 1;
+    }
+
+    // 1. Setup PulseAudio
+    static const pa_sample_spec ss = {
+        .format = PA_SAMPLE_S16LE,
+        .rate = 44100,
+        .channels = 1
+    };
+
+    pa_buffer_attr attr;
+    attr.maxlength = (uint32_t) -1;
+    attr.tlength = pa_usec_to_bytes(60000, &ss); // 目标延迟设为 60ms
+    attr.prebuf = (uint32_t) -1;
+    attr.minreq = (uint32_t) -1;
+    attr.fragsize = (uint32_t) -1;
+
+    int error;
+    pa_simple *s = pa_simple_new(NULL, "AndroidStream", PA_STREAM_PLAYBACK, argv[2], "live_audio", &ss, NULL, &attr, &error);
+    if (!s) {
+        fprintf(stderr, "pa_simple_new() failed: %s\n", pa_strerror(error));
+        return 1;
+    }
+
+    // 2. Connect to Android Socket
+    int sock_fd = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (sock_fd < 0) {
+        perror("socket");
+        return 1;
+    }
+
+    struct sockaddr_un addr;
+    memset(&addr, 0, sizeof(addr));
+    addr.sun_family = AF_UNIX;
+    strncpy(addr.sun_path, argv[1], sizeof(addr.sun_path) - 1);
+
+    printf("Connecting to %s...\n", argv[1]);
+    while (connect(sock_fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
+        printf("Waiting for server...\n");
+        sleep(1); // Retry logic since Android might start later
+    }
+    printf("Connected! Playing audio...\n");
+
+    // 3. Stream Loop
+    uint8_t buf[BUFSIZE];
+    while (1) {
+        ssize_t r = read(sock_fd, buf, sizeof(buf));
+        if (r <= 0) break;
+
+        if (pa_simple_write(s, buf, (size_t)r, &error) < 0) {
+            fprintf(stderr, "pa_simple_write() failed: %s\n", pa_strerror(error));
+            break;
+        }
+    }
+
+    // Cleanup
+    pa_simple_free(s);
+    close(sock_fd);
+    return 0;
+}