[Opus] Update to v1.2.1

third_party/opus/src/celt/fixed_c6x.h

Index: third_party/opus/src/celt/fixed_c6x.h
diff --git a/third_party/opus/src/celt/celt_lpc.h b/third_party/opus/src/celt/fixed_c6x.h
similarity index 57%
copy from third_party/opus/src/celt/celt_lpc.h
copy to third_party/opus/src/celt/fixed_c6x.h
index 323459eb1a83156664784742ddca78e1c44e6dc0..bb6ad927803f9fabc155e10bd7da845fce2e8ce8 100644
--- a/third_party/opus/src/celt/celt_lpc.h
+++ b/third_party/opus/src/celt/fixed_c6x.h
@@ -1,5 +1,8 @@
-/* Copyright (c) 2009-2010 Xiph.Org Foundation
-   Written by Jean-Marc Valin */
+/* Copyright (C) 2008 CSIRO */
+/**
+   @file fixed_c6x.h
+   @brief Fixed-point operations for the TI C6x DSP family
+*/
 /*
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
@@ -25,43 +28,43 @@
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#ifndef PLC_H
-#define PLC_H
+#ifndef FIXED_C6X_H
+#define FIXED_C6X_H
+
+#undef MULT16_16SU
+#define MULT16_16SU(a,b) _mpysu(a,b)
+
+#undef MULT_16_16
+#define MULT_16_16(a,b) _mpy(a,b)
+
+#define celt_ilog2(x) (30 - _norm(x))
+#define OVERRIDE_CELT_ILOG2
+
+#undef MULT16_32_Q15
+#define MULT16_32_Q15(a,b) (_mpylill(a, b) >> 15)
 
-#include "arch.h"
-#include "cpu_support.h"
+#if 0
+#include "dsplib.h"
 
-#if defined(OPUS_X86_MAY_HAVE_SSE4_1)
-#include "x86/celt_lpc_sse.h"
-#endif
+#undef MAX16
+#define MAX16(a,b) _max(a,b)
 
-#define LPC_ORDER 24
+#undef MIN16
+#define MIN16(a,b) _min(a,b)
 
-void _celt_lpc(opus_val16 *_lpc, const opus_val32 *ac, int p);
+#undef MAX32
+#define MAX32(a,b) _lmax(a,b)
 
-void celt_fir_c(
-         const opus_val16 *x,
-         const opus_val16 *num,
-         opus_val16 *y,
-         int N,
-         int ord,
-         opus_val16 *mem,
-         int arch);
+#undef MIN32
+#define MIN32(a,b) _lmin(a,b)
 
-#if !defined(OVERRIDE_CELT_FIR)
-#define celt_fir(x, num, y, N, ord, mem, arch) \
-    (celt_fir_c(x, num, y, N, ord, mem, arch))
-#endif
+#undef VSHR32
+#define VSHR32(a, shift) _lshl(a,-(shift))
 
-void celt_iir(const opus_val32 *x,
-         const opus_val16 *den,
-         opus_val32 *y,
-         int N,
-         int ord,
-         opus_val16 *mem,
-         int arch);
+#undef MULT16_16_Q15
+#define MULT16_16_Q15(a,b) (_smpy(a,b))
 
-int _celt_autocorr(const opus_val16 *x, opus_val32 *ac,
-         const opus_val16 *window, int overlap, int lag, int n, int arch);
+#define celt_maxabs16(x, len) MAX32(EXTEND32(maxval((DATA *)x, len)),-EXTEND32(minval((DATA *)x, len)))
+#define OVERRIDE_CELT_MAXABS16
 
-#endif /* PLC_H */
+#endif /* FIXED_C6X_H */