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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}
81 lines
3.1 KiB
C
81 lines
3.1 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_CbMemEnergy.c
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******************************************************************/
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#include "modules/audio_coding/codecs/ilbc/cb_mem_energy.h"
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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/constants.h"
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#include "modules/audio_coding/codecs/ilbc/defines.h"
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/*----------------------------------------------------------------*
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* Function WebRtcIlbcfix_CbMemEnergy computes the energy of all
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* the vectors in the codebook memory that will be used in the
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* following search for the best match.
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*----------------------------------------------------------------*/
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void WebRtcIlbcfix_CbMemEnergy(
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size_t range,
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int16_t *CB, /* (i) The CB memory (1:st section) */
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int16_t *filteredCB, /* (i) The filtered CB memory (2:nd section) */
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size_t lMem, /* (i) Length of the CB memory */
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size_t lTarget, /* (i) Length of the target vector */
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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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int16_t *ppi, *ppo, *pp;
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int32_t energy, tmp32;
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/* Compute the energy and store it in a vector. Also the
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* corresponding shift values are stored. The energy values
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* are reused in all three stages. */
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/* Calculate the energy in the first block of 'lTarget' sampels. */
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ppi = CB+lMem-lTarget-1;
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ppo = CB+lMem-1;
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pp=CB+lMem-lTarget;
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energy = WebRtcSpl_DotProductWithScale( pp, pp, lTarget, scale);
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/* Normalize the energy and store the number of shifts */
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energyShifts[0] = (int16_t)WebRtcSpl_NormW32(energy);
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tmp32 = energy << energyShifts[0];
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energyW16[0] = (int16_t)(tmp32 >> 16);
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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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WebRtcIlbcfix_CbMemEnergyCalc(energy, range, ppi, ppo, energyW16, energyShifts, scale, 0);
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/* Next, precompute the energy values for the filtered cb section */
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energy=0;
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pp=filteredCB+lMem-lTarget;
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energy = WebRtcSpl_DotProductWithScale( pp, pp, lTarget, scale);
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/* Normalize the energy and store the number of shifts */
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energyShifts[base_size] = (int16_t)WebRtcSpl_NormW32(energy);
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tmp32 = energy << energyShifts[base_size];
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energyW16[base_size] = (int16_t)(tmp32 >> 16);
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ppi = filteredCB + lMem - 1 - lTarget;
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ppo = filteredCB + lMem - 1;
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WebRtcIlbcfix_CbMemEnergyCalc(energy, range, ppi, ppo, energyW16, energyShifts, scale, base_size);
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}
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