From 11d2e258e5f69338154f657c2a3efa1358b921a8 Mon Sep 17 00:00:00 2001
From: bruceperens <bruceperens@01035d8c-6547-0410-b346-abe4f91aad63>
Date: Wed, 23 Apr 2014 23:15:19 +0000
Subject: [PATCH] SSB output mode works.

git-svn-id: https://svn.code.sf.net/p/freetel/code@1549 01035d8c-6547-0410-b346-abe4f91aad63
---
 freedv-server/source/platform/linux/audio_in_alsa.cpp  |  2 --
 freedv-server/source/platform/linux/audio_out_alsa.cpp | 10 +++++-----
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/freedv-server/source/platform/linux/audio_in_alsa.cpp b/freedv-server/source/platform/linux/audio_in_alsa.cpp
index 76de58f6..2a805302 100644
--- a/freedv-server/source/platform/linux/audio_in_alsa.cpp
+++ b/freedv-server/source/platform/linux/audio_in_alsa.cpp
@@ -201,7 +201,6 @@ namespace FreeDV {
   void
   AudioInALSA::start()
   {
-    std::cerr << "Input start " << parameters << std::endl;
     snd_pcm_drop(handle);
     snd_pcm_prepare(handle);
     snd_pcm_start(handle);
@@ -211,7 +210,6 @@ namespace FreeDV {
   void
   AudioInALSA::stop()
   {
-    std::cerr << "Input stop " << parameters << std::endl;
     snd_pcm_drop(handle);
     snd_pcm_prepare(handle);
     snd_pcm_pause(handle, 1);
diff --git a/freedv-server/source/platform/linux/audio_out_alsa.cpp b/freedv-server/source/platform/linux/audio_out_alsa.cpp
index f061e9f4..bbeb2c49 100644
--- a/freedv-server/source/platform/linux/audio_out_alsa.cpp
+++ b/freedv-server/source/platform/linux/audio_out_alsa.cpp
@@ -111,10 +111,10 @@ namespace FreeDV {
   AudioOutALSA::write16(const std::int16_t * array, std::size_t length)
   {
     if ( !started ) {
-      // Preload the audio output queue with two frames of silence. This makes
-      // underruns less likely. This delays the output from where we would
-      // otherwise have started it. Otherwise we tend to underrun repeatedly
-      // at startup time.
+      // Preload the audio output queue with a fraction of a frame of silence.
+      // This makes underruns less likely.
+      // This delays the output from where we would otherwise have started it.
+      // Otherwise we tend to underrun repeatedly at startup time.
       //
       // Note that all inputs and outputs of the typical user do not run on
       // a shared clock. There is the potential for overruns or underruns
@@ -122,7 +122,7 @@ namespace FreeDV {
       // a shared clock, and the more expensive equipment that supports it,
       // to avoid this problem.
       //
-      int16_t	buf[AudioFrameSamples * 2];
+      int16_t	buf[AudioFrameSamples / 100];
       memset(buf, 0, sizeof(buf));
       snd_pcm_writei(handle, buf, sizeof(buf) / sizeof(*buf));
     }
-- 
2.25.1