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-rw-r--r--chromium/third_party/webrtc/modules/audio_coding/neteq/dsp_helpfunctions.c120
1 files changed, 0 insertions, 120 deletions
diff --git a/chromium/third_party/webrtc/modules/audio_coding/neteq/dsp_helpfunctions.c b/chromium/third_party/webrtc/modules/audio_coding/neteq/dsp_helpfunctions.c
deleted file mode 100644
index ef721d55997..00000000000
--- a/chromium/third_party/webrtc/modules/audio_coding/neteq/dsp_helpfunctions.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * This file contains some help functions that did not fit elsewhere.
- */
-
-#include "dsp_helpfunctions.h"
-
-
-int16_t WebRtcNetEQ_CalcFsMult(uint16_t fsHz)
-{
- switch (fsHz)
- {
- case 8000:
- {
- return 1;
- }
- case 16000:
- {
- return 2;
- }
- case 32000:
- {
- return 4;
- }
- case 48000:
- {
- return 6;
- }
- default:
- {
- return 1;
- }
- }
-}
-
-
-int WebRtcNetEQ_DownSampleTo4kHz(const int16_t *in, int inLen, uint16_t inFsHz,
- int16_t *out, int outLen, int compensateDelay)
-{
- int16_t *B; /* filter coefficients */
- int16_t Blen; /* number of coefficients */
- int16_t filterDelay; /* phase delay in samples */
- int16_t factor; /* conversion rate (inFsHz/8000) */
- int ok;
-
- /* Set constants depending on frequency used */
- /* NOTE: The phase delay values are wrong compared to the true phase delay
- of the filters. However, the error is preserved (through the +1 term)
- for consistency. */
- switch (inFsHz)
- {
- case 8000:
- {
- Blen = 3;
- factor = 2;
- B = (int16_t*) WebRtcNetEQ_kDownsample8kHzTbl;
- filterDelay = 1 + 1;
- break;
- }
-#ifdef NETEQ_WIDEBAND
- case 16000:
- {
- Blen = 5;
- factor = 4;
- B = (int16_t*) WebRtcNetEQ_kDownsample16kHzTbl;
- filterDelay = 2 + 1;
- break;
- }
-#endif
-#ifdef NETEQ_32KHZ_WIDEBAND
- case 32000:
- {
- Blen = 7;
- factor = 8;
- B = (int16_t*) WebRtcNetEQ_kDownsample32kHzTbl;
- filterDelay = 3 + 1;
- break;
- }
-#endif
-#ifdef NETEQ_48KHZ_WIDEBAND
- case 48000:
- {
- Blen = 7;
- factor = 12;
- B = (int16_t*) WebRtcNetEQ_kDownsample48kHzTbl;
- filterDelay = 3 + 1;
- break;
- }
-#endif
- default:
- {
- /* unsupported or wrong sample rate */
- return -1;
- }
- }
-
- if (!compensateDelay)
- {
- /* disregard delay compensation */
- filterDelay = 0;
- }
-
- ok = WebRtcSpl_DownsampleFast((int16_t*) &in[Blen - 1],
- (int16_t) (inLen - (Blen - 1)), /* number of input samples */
- out, (int16_t) outLen, /* number of output samples to produce */
- B, Blen, factor, filterDelay); /* filter parameters */
-
- return ok; /* return value is -1 if input signal is too short */
-
-}
-