From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- .../audio_coding/codecs/ilbc/cb_construct.c | 80 ++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 third_party/libwebrtc/modules/audio_coding/codecs/ilbc/cb_construct.c (limited to 'third_party/libwebrtc/modules/audio_coding/codecs/ilbc/cb_construct.c') diff --git a/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/cb_construct.c b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/cb_construct.c new file mode 100644 index 0000000000..1e9a7040c7 --- /dev/null +++ b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/cb_construct.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2011 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. + */ + +/****************************************************************** + + iLBC Speech Coder ANSI-C Source Code + + WebRtcIlbcfix_CbConstruct.c + +******************************************************************/ + +#include "modules/audio_coding/codecs/ilbc/cb_construct.h" + +#include "modules/audio_coding/codecs/ilbc/defines.h" +#include "modules/audio_coding/codecs/ilbc/gain_dequant.h" +#include "modules/audio_coding/codecs/ilbc/get_cd_vec.h" +#include "rtc_base/sanitizer.h" + +// An arithmetic operation that is allowed to overflow. (It's still undefined +// behavior, so not a good idea; this just makes UBSan ignore the violation, so +// that our old code can continue to do what it's always been doing.) +static inline int32_t RTC_NO_SANITIZE("signed-integer-overflow") + OverflowingAddS32S32ToS32(int32_t a, int32_t b) { + return a + b; +} + +/*----------------------------------------------------------------* + * Construct decoded vector from codebook and gains. + *---------------------------------------------------------------*/ + +bool WebRtcIlbcfix_CbConstruct( + int16_t* decvector, /* (o) Decoded vector */ + const int16_t* index, /* (i) Codebook indices */ + const int16_t* gain_index, /* (i) Gain quantization indices */ + int16_t* mem, /* (i) Buffer for codevector construction */ + size_t lMem, /* (i) Length of buffer */ + size_t veclen) { /* (i) Length of vector */ + size_t j; + int16_t gain[CB_NSTAGES]; + /* Stack based */ + int16_t cbvec0[SUBL]; + int16_t cbvec1[SUBL]; + int16_t cbvec2[SUBL]; + int32_t a32; + int16_t *gainPtr; + + /* gain de-quantization */ + + gain[0] = WebRtcIlbcfix_GainDequant(gain_index[0], 16384, 0); + gain[1] = WebRtcIlbcfix_GainDequant(gain_index[1], gain[0], 1); + gain[2] = WebRtcIlbcfix_GainDequant(gain_index[2], gain[1], 2); + + /* codebook vector construction and construction of total vector */ + + /* Stack based */ + if (!WebRtcIlbcfix_GetCbVec(cbvec0, mem, (size_t)index[0], lMem, veclen)) + return false; // Failure. + if (!WebRtcIlbcfix_GetCbVec(cbvec1, mem, (size_t)index[1], lMem, veclen)) + return false; // Failure. + if (!WebRtcIlbcfix_GetCbVec(cbvec2, mem, (size_t)index[2], lMem, veclen)) + return false; // Failure. + + gainPtr = &gain[0]; + for (j=0;j> 14); + } + + return true; // Success. +} -- cgit v1.2.3