From 89b0fa5cd66765dc616ea4c9ca2035e58ca9e8d5 Mon Sep 17 00:00:00 2001
From: Jack Andersen <jackoalan@gmail.com>
Date: Fri, 13 May 2016 18:47:31 -1000
Subject: [PATCH] Add API for reporting submix sample rate and format

---
 include/boo/audiodev/IAudioSubmix.hpp | 13 +++++++++++++
 lib/audiodev/AudioSubmix.cpp          | 19 +++++++++++++++++++
 lib/audiodev/AudioSubmix.hpp          |  5 ++---
 3 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/include/boo/audiodev/IAudioSubmix.hpp b/include/boo/audiodev/IAudioSubmix.hpp
index 8956c67..67afc01 100644
--- a/include/boo/audiodev/IAudioSubmix.hpp
+++ b/include/boo/audiodev/IAudioSubmix.hpp
@@ -12,6 +12,13 @@ class IAudioVoiceCallback;
 struct ChannelMap;
 struct IAudioSubmixCallback;
 
+enum class SubmixFormat
+{
+    Int16,
+    Int32,
+    Float
+};
+
 struct IAudioSubmix
 {
     virtual ~IAudioSubmix() = default;
@@ -31,6 +38,12 @@ struct IAudioSubmix
 
     /** Sets gain factors for each channel once accumulated by the submix */
     virtual void setChannelGains(const float gains[8])=0;
+
+    /** Gets fixed sample rate of submix this way */
+    virtual double getSampleRate() const=0;
+
+    /** Gets fixed sample format of submix this way */
+    virtual SubmixFormat getSampleFormat() const=0;
 };
 
 struct IAudioSubmixCallback
diff --git a/lib/audiodev/AudioSubmix.cpp b/lib/audiodev/AudioSubmix.cpp
index 6bca5f7..0efbb26 100644
--- a/lib/audiodev/AudioSubmix.cpp
+++ b/lib/audiodev/AudioSubmix.cpp
@@ -178,4 +178,23 @@ const AudioVoiceEngineMixInfo& AudioSubmix::mixInfo() const
     return m_parent.mixInfo();
 }
 
+double AudioSubmix::getSampleRate() const
+{
+    return mixInfo().m_sampleRate;
+}
+
+SubmixFormat AudioSubmix::getSampleFormat() const
+{
+    switch (mixInfo().m_sampleFormat)
+    {
+    case SOXR_INT16_I:
+    default:
+        return SubmixFormat::Int16;
+    case SOXR_INT32_I:
+        return SubmixFormat::Int32;
+    case SOXR_FLOAT32_I:
+        return SubmixFormat::Float;
+    }
+}
+
 }
diff --git a/lib/audiodev/AudioSubmix.hpp b/lib/audiodev/AudioSubmix.hpp
index 1306bbd..6892d22 100644
--- a/lib/audiodev/AudioSubmix.hpp
+++ b/lib/audiodev/AudioSubmix.hpp
@@ -61,12 +61,11 @@ public:
                                                         bool dynamicPitch=false);
 
     std::unique_ptr<IAudioSubmix> allocateNewSubmix(IAudioSubmixCallback* cb=nullptr);
-
     void setChannelGains(const float gains[8]);
-
     void unbindSubmix();
-
     const AudioVoiceEngineMixInfo& mixInfo() const;
+    double getSampleRate() const;
+    SubmixFormat getSampleFormat() const;
 };
 
 }