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3111783aa1
Prior to this commit, most .c files in modules/audio_coding/codecs/ilbc don't include their corresponding headers, nor do they order #includes as per the Google Style Guide [1]. The former is especially harmful, since in C it can silently allow the function signature to diverge from its prototype, thus causing disaster at runtime. This CL fixes both issues. In effect, this allows the common_audio and modules/audio_coding:ilbc targets to be compiled with Clang's -Wmissing-prototypes, though this CL does not add that change. [1]: https://google.github.io/styleguide/cppguide.html#Names_and_Order_of_Includes Bug: webrtc:12314 Change-Id: I8299968ed3cc86ff35d9de045072b846298043af Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/198362 Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org> Commit-Queue: Timothy Gu <timothygu@chromium.org> Cr-Commit-Position: refs/heads/master@{#32896}
67 lines
2 KiB
C
67 lines
2 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/******************************************************************
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iLBC Speech Coder ANSI-C Source Code
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WebRtcIlbcfix_CbMemEnergyCalc.c
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******************************************************************/
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#include "modules/audio_coding/codecs/ilbc/cb_mem_energy_calc.h"
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#include "modules/audio_coding/codecs/ilbc/defines.h"
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/* Compute the energy of the rest of the cb memory
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* by step wise adding and subtracting the next
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* sample and the last sample respectively */
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void WebRtcIlbcfix_CbMemEnergyCalc(
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int32_t energy, /* (i) input start energy */
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size_t range, /* (i) number of iterations */
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int16_t *ppi, /* (i) input pointer 1 */
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int16_t *ppo, /* (i) input pointer 2 */
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int16_t *energyW16, /* (o) Energy in the CB vectors */
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int16_t *energyShifts, /* (o) Shift value of the energy */
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int scale, /* (i) The scaling of all energy values */
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size_t base_size /* (i) Index to where energy values should be stored */
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)
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{
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size_t j;
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int16_t shft;
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int32_t tmp;
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int16_t *eSh_ptr;
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int16_t *eW16_ptr;
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eSh_ptr = &energyShifts[1+base_size];
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eW16_ptr = &energyW16[1+base_size];
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for (j = 0; j + 1 < range; j++) {
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/* Calculate next energy by a +/-
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operation on the edge samples */
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tmp = (*ppi) * (*ppi) - (*ppo) * (*ppo);
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energy += tmp >> scale;
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energy = WEBRTC_SPL_MAX(energy, 0);
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ppi--;
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ppo--;
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/* Normalize the energy into a int16_t and store
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the number of shifts */
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shft = (int16_t)WebRtcSpl_NormW32(energy);
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*eSh_ptr++ = shft;
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tmp = energy << shft;
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*eW16_ptr++ = (int16_t)(tmp >> 16);
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}
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}
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