Move BufferStorage and Voice to core

1 files changed, 75 insertions, 0 deletions

diff --git a/core/buffer_storage.h b/core/buffer_storage.h
new file mode 100644
index 00000000..59280354
--- /dev/null
+++ b/core/buffer_storage.h
@@ -0,0 +1,75 @@
+#ifndef CORE_BUFFER_STORAGE_H
+#define CORE_BUFFER_STORAGE_H
+
+#include <atomic>
+
+#include "albyte.h"
+
+
+using uint = unsigned int;
+
+/* Storable formats */
+enum FmtType : unsigned char {
+    FmtUByte,
+    FmtShort,
+    FmtFloat,
+    FmtDouble,
+    FmtMulaw,
+    FmtAlaw,
+};
+enum FmtChannels : unsigned char {
+    FmtMono,
+    FmtStereo,
+    FmtRear,
+    FmtQuad,
+    FmtX51, /* (WFX order) */
+    FmtX61, /* (WFX order) */
+    FmtX71, /* (WFX order) */
+    FmtBFormat2D,
+    FmtBFormat3D,
+    FmtUHJ2, /* 2-channel UHJ, aka "BHJ", stereo-compatible */
+    FmtUHJ3, /* 3-channel UHJ, aka "THJ" */
+    FmtUHJ4, /* 4-channel UHJ, aka "PHJ" */
+};
+
+enum class AmbiLayout : unsigned char {
+    FuMa,
+    ACN,
+};
+enum class AmbiScaling : unsigned char {
+    FuMa,
+    SN3D,
+    N3D,
+};
+
+uint BytesFromFmt(FmtType type) noexcept;
+uint ChannelsFromFmt(FmtChannels chans, uint ambiorder) noexcept;
+inline uint FrameSizeFromFmt(FmtChannels chans, FmtType type, uint ambiorder) noexcept
+{ return ChannelsFromFmt(chans, ambiorder) * BytesFromFmt(type); }
+
+
+using CallbackType = int(*)(void*, void*, int);
+
+struct BufferStorage {
+    CallbackType mCallback{nullptr};
+    void *mUserData{nullptr};
+
+    uint mSampleRate{0u};
+    FmtChannels mChannels{FmtMono};
+    FmtType mType{FmtShort};
+    uint mSampleLen{0u};
+
+    AmbiLayout mAmbiLayout{AmbiLayout::FuMa};
+    AmbiScaling mAmbiScaling{AmbiScaling::FuMa};
+    uint mAmbiOrder{0u};
+
+    inline uint bytesFromFmt() const noexcept { return BytesFromFmt(mType); }
+    inline uint channelsFromFmt() const noexcept
+    { return ChannelsFromFmt(mChannels, mAmbiOrder); }
+    inline uint frameSizeFromFmt() const noexcept { return channelsFromFmt() * bytesFromFmt(); }
+
+    inline bool isBFormat() const noexcept
+    { return mChannels == FmtBFormat2D || mChannels == FmtBFormat3D; }
+};
+
+#endif /* CORE_BUFFER_STORAGE_H */