From ef806d5bd80a9cbd6094c8e816a9b6d71a4084ab Mon Sep 17 00:00:00 2001
From: TurtleP <jpostelnek@outlook.com>
Date: Wed, 14 Sep 2022 13:35:11 -0400
Subject: [PATCH] add various ndspChnGet* methods (#506)

---
 libctru/include/3ds/ndsp/channel.h | 29 +++++++++++++++++++++++++++++
 libctru/source/ndsp/ndsp-channel.c | 20 ++++++++++++++++++++
 2 files changed, 49 insertions(+)

diff --git a/libctru/include/3ds/ndsp/channel.h b/libctru/include/3ds/ndsp/channel.h
index d3c81b4..e5b0f13 100644
--- a/libctru/include/3ds/ndsp/channel.h
+++ b/libctru/include/3ds/ndsp/channel.h
@@ -107,6 +107,14 @@ void ndspChnSetPaused(int id, bool paused);
  */
 void ndspChnSetFormat(int id, u16 format);
 
+/**
+ * 
+ * @brief Gets the format of a channel.
+ * @param id ID of the channel (0..23).
+ * @return The format of the channel.
+ */
+u16 ndspChnGetFormat(int id);
+
 /**
  * @brief Sets the interpolation type of a channel.
  * @param id ID of the channel (0..23).
@@ -114,6 +122,13 @@ void ndspChnSetFormat(int id, u16 format);
  */
 void ndspChnSetInterp(int id, ndspInterpType type);
 
+/**
+ * @brief Gets the interpolation type of a channel.
+ * @param id ID of the channel (0..23).
+ * @return The interpolation type of the channel.
+ */
+ndspInterpType ndspChnGetInterp(int id);
+
 /**
  * @brief Sets the sample rate of a channel.
  * @param id ID of the channel (0..23).
@@ -121,6 +136,13 @@ void ndspChnSetInterp(int id, ndspInterpType type);
  */
 void ndspChnSetRate(int id, float rate);
 
+/**
+ * @brief Gets the sample rate of a channel.
+ * @param id ID of the channel (0..23).
+ * @return The sample rate of the channel.
+ */
+float ndspChnGetRate(int id);
+
 /**
  * @brief Sets the mix parameters (volumes) of a channel.
  * @param id ID of the channel (0..23).
@@ -134,6 +156,13 @@ void ndspChnSetRate(int id, float rate);
  */
 void ndspChnSetMix(int id, float mix[12]);
 
+/**
+ * @brief Gets the mix parameters (volumes) of a channel.
+ * @param id ID of the channel (0..23)
+ * @param mix Mix parameters to write out to. See \ref ndspChnSetMix.
+ */
+void ndspChnGetMix(int id, float* mix[12]);
+
 /**
  * @brief Sets the DSPADPCM coefficients of a channel.
  * @param id ID of the channel (0..23).
diff --git a/libctru/source/ndsp/ndsp-channel.c b/libctru/source/ndsp/ndsp-channel.c
index 3253dee..1a8456b 100644
--- a/libctru/source/ndsp/ndsp-channel.c
+++ b/libctru/source/ndsp/ndsp-channel.c
@@ -123,6 +123,12 @@ void ndspChnSetInterp(int id, ndspInterpType type)
 	LightLock_Unlock(&chn->lock);
 }
 
+ndspInterpType ndspChnGetInterp(int id)
+{
+    ndspChnSt* chn = &ndspChn[id];
+    return chn->interpType;
+}
+
 void ndspChnSetRate(int id, float rate)
 {
 	ndspChnSt* chn = &ndspChn[id];
@@ -132,6 +138,12 @@ void ndspChnSetRate(int id, float rate)
 	LightLock_Unlock(&chn->lock);
 }
 
+float ndspChnGetRate(int id)
+{
+    ndspChnSt* chn = &ndspChn[id];
+	return chn->rate;
+}
+
 void ndspChnSetMix(int id, float mix[12])
 {
 	ndspChnSt* chn = &ndspChn[id];
@@ -141,6 +153,14 @@ void ndspChnSetMix(int id, float mix[12])
 	LightLock_Unlock(&chn->lock);
 }
 
+void ndspChnGetMix(int id, float out_mix[12])
+{
+    ndspChnSt* chn = &ndspChn[id];
+    LightLock_Lock(&chn->lock);
+    memcpy(out_mix, chn->mix, sizeof(ndspChn[id].mix));
+    LightLock_Unlock(&chn->lock);
+}
+
 void ndspChnSetAdpcmCoefs(int id, u16 coefs[16])
 {
 	ndspChnSt* chn = &ndspChn[id];