From 61a611e33c5bc6960173683fa4ddfa80ed10d313 Mon Sep 17 00:00:00 2001
From: Ahmet Inan <inan@aicodix.de>
Date: Tue, 24 Mar 2020 08:32:19 +0100
Subject: [PATCH] get stride from channel count per default

---
 pcm.hh | 4 ++--
 wav.hh | 8 ++++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/pcm.hh b/pcm.hh
index 24f2f4f..e5c492f 100644
--- a/pcm.hh
+++ b/pcm.hh
@@ -11,7 +11,7 @@ namespace DSP {
 template <typename TYPE>
 struct WritePCM
 {
-	virtual void write(TYPE *, int, int = 1) = 0;
+	virtual void write(TYPE *, int, int = -1) = 0;
 	virtual bool good() = 0;
 	virtual void silence(int) = 0;
 	virtual int rate() = 0;
@@ -22,7 +22,7 @@ struct WritePCM
 template <typename TYPE>
 struct ReadPCM
 {
-	virtual void read(TYPE *, int, int = 1) = 0;
+	virtual void read(TYPE *, int, int = -1) = 0;
 	virtual bool good() = 0;
 	virtual void skip(int) = 0;
 	virtual int rate() = 0;
diff --git a/wav.hh b/wav.hh
index 28bd82f..60bd6ee 100644
--- a/wav.hh
+++ b/wav.hh
@@ -99,8 +99,10 @@ public:
 				return;
 		}
 	}
-	void read(TYPE *buf, int num, int stride = 1)
+	void read(TYPE *buf, int num, int stride = -1)
 	{
+		if (stride < 0)
+			stride = channels_;
 		for (int n = 0; n < num; ++n) {
 			for (int c = 0; c < channels_; ++c) {
 				buf[stride * n + c] = TYPE(readLE(bytes) - offset) / TYPE(factor);
@@ -204,8 +206,10 @@ public:
 		os.seekp(40);
 		writeLE(size, 4); // Subchunk2Size
 	}
-	void write(TYPE *buf, int num, int stride = 1)
+	void write(TYPE *buf, int num, int stride = -1)
 	{
+		if (stride < 0)
+			stride = channels_;
 		for (int n = 0; n < num; ++n) {
 			for (int c = 0; c < channels_; ++c) {
 				TYPE v = TYPE(offset) + TYPE(factor) * buf[stride * n + c];