1 files changed, 59 insertions, 0 deletions
diff --git a/chromium/third_party/openmax_dl/dl/sp/src/mips/omxSP_FFTFwd_RToCCS_F32_Sfs.c b/chromium/third_party/openmax_dl/dl/sp/src/mips/omxSP_FFTFwd_RToCCS_F32_Sfs.c
new file mode 100644
index 00000000000..c01b97084ea
--- /dev/null
+++ b/chromium/third_party/openmax_dl/dl/sp/src/mips/omxSP_FFTFwd_RToCCS_F32_Sfs.c
@@ -0,0 +1,59 @@
+/*
+ *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ *
+ */
+
+#include <stdint.h>
+
+#include "dl/api/omxtypes.h"
+#include "dl/sp/api/omxSP.h"
+#include "dl/sp/api/mipsSP.h"
+
+extern OMXResult mips_FFTFwd_RToCCS_F32_complex(
+    const OMX_F32* pSrc,
+    OMX_F32* pDst,
+    const MIPSFFTSpec_R_FC32* pFFTSpec);
+
+extern OMXResult mips_FFTFwd_RToCCS_F32_real(
+    const OMX_F32* pSrc,
+    OMX_F32* pDst,
+    const MIPSFFTSpec_R_FC32* pFFTSpec);
+
+OMXResult omxSP_FFTFwd_RToCCS_F32_Sfs(const OMX_F32* pSrc,
+                                      OMX_F32* pDst,
+                                      const OMXFFTSpec_R_F32* pFFTSpec) {
+  const MIPSFFTSpec_R_FC32* pFFTStruct = (const MIPSFFTSpec_R_FC32*)pFFTSpec;
+
+  /* Buffers must be 32 bytes aligned. */
+  if (!pSrc || !pDst || ((uintptr_t)pSrc & 31) || ((uintptr_t)pDst & 31) ||
+      !pFFTSpec)
+    return OMX_Sts_BadArgErr;
+
+  /* Check if the structure is initialized correctly. */
+  if (!pFFTStruct->pBitRev || !pFFTStruct->pBitRevInv || !pFFTStruct->pOffset ||
+      !pFFTStruct->pTwiddle || !pFFTStruct->pBuf || (pFFTStruct->order < 1) ||
+      (pFFTStruct->order > TWIDDLE_TABLE_ORDER))
+    return OMX_Sts_BadArgErr;
+
+  /* For order larger than 4, compute Real FFT as Complex FFT of (order - 1). */
+  if (pFFTStruct->order > 4)
+    return mips_FFTFwd_RToCCS_F32_complex(pSrc, pDst, pFFTStruct);
+
+  /* Special case for order == 1. */
+  if (pFFTStruct->order == 1) {
+    pDst[0] = (pSrc[0] + pSrc[1]);
+    pDst[1] = 0.0f;
+    pDst[2] = (pSrc[0] - pSrc[1]);
+    pDst[3] = 0.0f;
+    return OMX_Sts_NoErr;
+  }
+
+  /* Other short FFTs. */
+  return mips_FFTFwd_RToCCS_F32_real(pSrc, pDst, pFFTStruct);
+}