diff options
Diffstat (limited to 'third_party/libwebrtc/common_audio/signal_processing/spl_inl.c')
-rw-r--r-- | third_party/libwebrtc/common_audio/signal_processing/spl_inl.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/third_party/libwebrtc/common_audio/signal_processing/spl_inl.c b/third_party/libwebrtc/common_audio/signal_processing/spl_inl.c new file mode 100644 index 0000000000..d09e308ed3 --- /dev/null +++ b/third_party/libwebrtc/common_audio/signal_processing/spl_inl.c @@ -0,0 +1,24 @@ +/* + * Copyright (c) 2016 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 "common_audio/signal_processing/include/spl_inl.h" + +// Table used by WebRtcSpl_CountLeadingZeros32_NotBuiltin. For each uint32_t n +// that's a sequence of 0 bits followed by a sequence of 1 bits, the entry at +// index (n * 0x8c0b2891) >> 26 in this table gives the number of zero bits in +// n. +const int8_t kWebRtcSpl_CountLeadingZeros32_Table[64] = { + 32, 8, 17, -1, -1, 14, -1, -1, -1, 20, -1, -1, -1, 28, -1, 18, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 26, 25, 24, + 4, 11, 23, 31, 3, 7, 10, 16, 22, 30, -1, -1, 2, 6, 13, 9, + -1, 15, -1, 21, -1, 29, 19, -1, -1, -1, -1, -1, 1, 27, 5, 12, +}; |