+/*****************************************************************************
+ * ESDLoop: ESDThread's inner loop
+ *****************************************************************************
+ * This is a separate function because it makes use of alloca() which makes
+ * use of the caller's stack frame, which means we need to return after each
+ * iteration.
+ *****************************************************************************/
+static void ESDLoop( aout_instance_t * p_aout )
+{
+ struct aout_sys_t * p_sys = p_aout->output.p_sys;
+ aout_buffer_t * p_buffer;
+ int i_tmp, i_size;
+ byte_t * p_bytes = NULL;
+
+ /* Get the presentation date of the next write() operation. It
+ * is equal to the current date + buffered samples + esd latency */
+ p_buffer = aout_OutputNextBuffer( p_aout, mdate() + p_sys->latency,
+ VLC_FALSE );
+
+ if ( p_buffer != NULL )
+ {
+ p_bytes = p_buffer->p_buffer;
+ i_size = p_buffer->i_nb_bytes;
+ }
+ else
+ {
+ i_size = ESD_BUF_SIZE * 2
+ / p_aout->output.output.i_frame_length
+ * p_aout->output.output.i_bytes_per_frame;
+ p_bytes = alloca( i_size );
+ memset( p_bytes, 0, i_size );
+ }
+
+ i_tmp = write( p_sys->i_fd, p_bytes, i_size );
+
+ if( i_tmp < 0 )
+ {
+ msg_Err( p_aout, "write failed (%s)", strerror(errno) );
+ }
+
+ if ( p_buffer != NULL )
+ {
+ aout_BufferFree( p_buffer );
+ }
+}
+