1 files changed, 0 insertions, 52 deletions
diff --git a/webrtc/common_audio/sparse_fir_filter.h b/webrtc/common_audio/sparse_fir_filter.h
deleted file mode 100644
index 2ba5cf4..0000000
--- a/webrtc/common_audio/sparse_fir_filter.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- *  Copyright (c) 2015 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.
- */
-
-#ifndef WEBRTC_COMMON_AUDIO_SPARSE_FIR_FILTER_H_
-#define WEBRTC_COMMON_AUDIO_SPARSE_FIR_FILTER_H_
-
-#include <cstring>
-#include <vector>
-
-#include "webrtc/base/constructormagic.h"
-
-namespace webrtc {
-
-// A Finite Impulse Response filter implementation which takes advantage of a
-// sparse structure with uniformly distributed non-zero coefficients.
-class SparseFIRFilter final {
- public:
-  // |num_nonzero_coeffs| is the number of non-zero coefficients,
-  // |nonzero_coeffs|. They are assumed to be uniformly distributed every
-  // |sparsity| samples and with an initial |offset|. The rest of the filter
-  // coefficients will be assumed zeros. For example, with sparsity = 3, and
-  // offset = 1 the filter coefficients will be:
-  // B = [0 coeffs[0] 0 0 coeffs[1] 0 0 coeffs[2] ... ]
-  // All initial state values will be zeros.
-  SparseFIRFilter(const float* nonzero_coeffs,
-                  size_t num_nonzero_coeffs,
-                  size_t sparsity,
-                  size_t offset);
-
-  // Filters the |in| data supplied.
-  // |out| must be previously allocated and it must be at least of |length|.
-  void Filter(const float* in, size_t length, float* out);
-
- private:
-  const size_t sparsity_;
-  const size_t offset_;
-  const std::vector<float> nonzero_coeffs_;
-  std::vector<float> state_;
-
-  RTC_DISALLOW_COPY_AND_ASSIGN(SparseFIRFilter);
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_COMMON_AUDIO_SPARSE_FIR_FILTER_H_