From 28ad79c97ab273d5077847cc81ca969c63474219 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Sun, 1 Dec 2013 19:29:55 +0100
Subject: pcm/Traits: add typedef long_type
---
src/pcm/Traits.hxx | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/src/pcm/Traits.hxx b/src/pcm/Traits.hxx
index b102b41ab..58a61c9c5 100644
--- a/src/pcm/Traits.hxx
+++ b/src/pcm/Traits.hxx
@@ -50,6 +50,13 @@ struct SampleTraits<SampleFormat::S8> {
*/
typedef const value_type *const_pointer_type;
+ /**
+ * A "long" type that is large and accurate enough for
+ * arithmetic without risking an (integer) overflow or
+ * (floating point) precision loss.
+ */
+ typedef int long_type;
+
/**
* The size of one sample in bytes.
*/
@@ -68,6 +75,8 @@ struct SampleTraits<SampleFormat::S16> {
typedef value_type *pointer_type;
typedef const value_type *const_pointer_type;
+ typedef int long_type;
+
static constexpr size_t SAMPLE_SIZE = sizeof(value_type);
static constexpr unsigned BITS = sizeof(value_type) * 8;
};
@@ -78,6 +87,8 @@ struct SampleTraits<SampleFormat::S32> {
typedef value_type *pointer_type;
typedef const value_type *const_pointer_type;
+ typedef int64_t long_type;
+
static constexpr size_t SAMPLE_SIZE = sizeof(value_type);
static constexpr unsigned BITS = sizeof(value_type) * 8;
};
@@ -88,6 +99,8 @@ struct SampleTraits<SampleFormat::S24_P32> {
typedef value_type *pointer_type;
typedef const value_type *const_pointer_type;
+ typedef int long_type;
+
static constexpr size_t SAMPLE_SIZE = sizeof(value_type);
static constexpr unsigned BITS = 24;
};
--
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