return write(sounddev, buff, len);
}
+#include "../common/plat.h"
+
+/* not really non-blocking, just detects if blocking occurs
+ * and starts skipping writes in case it does. */
+int sndout_oss_write_nb(const void *buff, int len)
+{
+ static int lag_counter, skip_counter;
+ unsigned int t;
+ int ret;
+
+ if (lag_counter > 2) {
+ // skip writes if audio starts blocking
+ lag_counter = 0;
+ skip_counter = FRAG_COUNT;
+ }
+
+ if (skip_counter > 0) {
+ skip_counter--;
+ return len;
+ }
+
+ t = plat_get_ticks_ms();
+ ret = sndout_oss_write(buff, len);
+ t = plat_get_ticks_ms() - t;
+ if (t > 1) {
+ // this shouldn't really happen, most likely audio is out of sync
+ lag_counter++;
+ if (lag_counter > 2)
+ printf("audio lag %u\n", t);
+ }
+ else
+ lag_counter = 0;
+
+ return ret;
+}
+
int sndout_oss_can_write(int bytes)
{
audio_buf_info bi;