Configurable buffer size, only for standalone

shairport just yet.

hairtunes.c

@@ -52,12 +52,9 @@ int debug = 0;
 
 #include "alac.h"
 
-// default buffer size
-#define BUFFER_FRAMES  320
 // and how full it needs to be to begin (must be <BUFFER_FRAMES)
 #define START_FILL    282
 
-
 #define MAX_PACKET      2048
 
 typedef unsigned short seq_t;
@@ -71,6 +68,8 @@ int fmtp[32];
 int sampling_rate;
 int frame_size;
 
+int buffer_start_fill = START_FILL;
+
 char *libao_driver = NULL;
 char *libao_devicename = NULL;
 char *libao_deviceid = NULL; // ao_options expects "char*"
@@ -386,7 +385,7 @@ void buffer_put_packet(seq_t seqno, char *data, int len) {
         abuf->ready = 1;
     }
 
-    if (ab_buffering && buf_fill >= START_FILL) {
+    if (ab_buffering && buf_fill >= buffer_start_fill) {
         ab_buffering = 0;
         pthread_cond_signal(&ab_buffer_ready);
     }

hairtunes.h

@@ -2,4 +2,8 @@
 #define _HAIRTUNES_H_
 int hairtunes_init(char *pAeskey, char *pAesiv, char *pFmtpstr, int pCtrlPort, int pTimingPort,
          int pDataPort, char *pRtpHost, char*pPipeName, char *pLibaoDriver, char *pLibaoDeviceName, char *pLibaoDeviceId);
+
+// default buffer size
+#define BUFFER_FRAMES  320
+
 #endif 

shairport.c

@@ -39,6 +39,7 @@
 // TEMP
 
 int kCurrentLogLevel = LOG_INFO;
+extern int buffer_start_fill;
 
 #ifdef _WIN32
 #define DEVNULL "nul"
@@ -94,6 +95,15 @@ int main(int argc, char **argv)
     {
       tPort = atoi(arg+14);
     }
+    else if(!strcmp(arg, "-b")) 
+    {
+      buffer_start_fill = atoi(*++argv);
+      argc--;
+    }
+    else if(!strncmp(arg, "--buffer=", 9))
+    {
+      buffer_start_fill = atoi(arg + 9);
+    }
     else if(!strcmp(arg, "-k"))
     {
       tUseKnownHWID = TRUE;
@@ -126,6 +136,7 @@ int main(int argc, char **argv)
       slog(LOG_INFO, "  -a, --apname=AirPort    Sets Airport name\n");
       slog(LOG_INFO, "  -p, --password=secret   Sets Password (not working)\n");
       slog(LOG_INFO, "  -o, --server_port=5000  Sets Port for Avahi/dns-sd\n");
+      slog(LOG_INFO, "  -b, --buffer=282        Sets Number of frames to buffer before beginning playback\n");
       slog(LOG_INFO, "  -d                      Daemon mode\n");
       slog(LOG_INFO, "  -q, --quiet             Supresses all output.\n");
       slog(LOG_INFO, "  -v,-v2,-v3,-vv          Various debugging levels\n");
@@ -134,6 +145,11 @@ int main(int argc, char **argv)
     }    
   }
 
+  if ( buffer_start_fill < 30 || buffer_start_fill > BUFFER_FRAMES ) { 
+     fprintf(stderr, "buffer value must be > 30 and < %d\n", BUFFER_FRAMES);
+     return(0);
+  }
+
   if(tDaemonize)
   {
     int tPid = fork();