初始化内容

2026-09-16 14:07:40 +08:00
parent 6934b390bf
commit 4f643c1e7c
18350 changed files with 6088489 additions and 305 deletions
@@ -0,0 +1,81 @@
+
+#include "config.h"
+
+#include "buffer_storage.h"
+
+#include <stdint.h>
+
+
+const char *NameFromFormat(FmtType type) noexcept
+{
+    switch(type)
+    {
+    case FmtUByte: return "UInt8";
+    case FmtShort: return "Int16";
+    case FmtFloat: return "Float";
+    case FmtDouble: return "Double";
+    case FmtMulaw: return "muLaw";
+    case FmtAlaw: return "aLaw";
+    case FmtIMA4: return "IMA4 ADPCM";
+    case FmtMSADPCM: return "MS ADPCM";
+    }
+    return "<internal error>";
+}
+
+const char *NameFromFormat(FmtChannels channels) noexcept
+{
+    switch(channels)
+    {
+    case FmtMono: return "Mono";
+    case FmtStereo: return "Stereo";
+    case FmtRear: return "Rear";
+    case FmtQuad: return "Quadraphonic";
+    case FmtX51: return "Surround 5.1";
+    case FmtX61: return "Surround 6.1";
+    case FmtX71: return "Surround 7.1";
+    case FmtBFormat2D: return "B-Format 2D";
+    case FmtBFormat3D: return "B-Format 3D";
+    case FmtUHJ2: return "UHJ2";
+    case FmtUHJ3: return "UHJ3";
+    case FmtUHJ4: return "UHJ4";
+    case FmtSuperStereo: return "Super Stereo";
+    }
+    return "<internal error>";
+}
+
+uint BytesFromFmt(FmtType type) noexcept
+{
+    switch(type)
+    {
+    case FmtUByte: return sizeof(uint8_t);
+    case FmtShort: return sizeof(int16_t);
+    case FmtFloat: return sizeof(float);
+    case FmtDouble: return sizeof(double);
+    case FmtMulaw: return sizeof(uint8_t);
+    case FmtAlaw: return sizeof(uint8_t);
+    case FmtIMA4: break;
+    case FmtMSADPCM: break;
+    }
+    return 0;
+}
+
+uint ChannelsFromFmt(FmtChannels chans, uint ambiorder) noexcept
+{
+    switch(chans)
+    {
+    case FmtMono: return 1;
+    case FmtStereo: return 2;
+    case FmtRear: return 2;
+    case FmtQuad: return 4;
+    case FmtX51: return 6;
+    case FmtX61: return 7;
+    case FmtX71: return 8;
+    case FmtBFormat2D: return (ambiorder*2) + 1;
+    case FmtBFormat3D: return (ambiorder+1) * (ambiorder+1);
+    case FmtUHJ2: return 2;
+    case FmtUHJ3: return 3;
+    case FmtUHJ4: return 4;
+    case FmtSuperStereo: return 2;
+    }
+    return 0;
+}