From 3cb4116243e54b0452d88c70a7acd4af17cf8d02 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Sun, 10 Nov 2013 23:05:51 +0100
Subject: ao: add ao_play_silence, use for ao_alsa and ao_oss

Also add a corresponding function to audio/format.c, which fills an
audio block with silence.
---
 audio/format.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'audio/format.h')

diff --git a/audio/format.h b/audio/format.h
index 3a80a601c5..95e792340c 100644
--- a/audio/format.h
+++ b/audio/format.h
@@ -134,6 +134,9 @@ enum af_format {
     (AF_FORMAT_IS_AC3(fmt) ||      \
      ((fmt) & AF_FORMAT_SPECIAL_MASK) == AF_FORMAT_S_IEC61937)
 
+#define AF_FORMAT_IS_SPECIAL(fmt) \
+    ((fmt & AF_FORMAT_SPECIAL_MASK) != 0)
+
 struct af_fmt_entry {
     const char *name;
     int format;
@@ -152,4 +155,6 @@ int af_fmt_seconds_to_bytes(int format, float seconds, int channels, int sampler
 
 bool af_fmt_is_valid(int format);
 
+void af_fill_silence(void *dst, size_t bytes, int format);
+
 #endif /* MPLAYER_AF_FORMAT_H */
-- 
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