mips: Optimization of AAC psychoacoustic model functions
Signed-off-by: Bojan Zivkovic <bojan@mips.com> Reviewed-by: Nedeljko Babic <Nedeljko.Babic@imgtec.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Bojan Zivkovic
Michael Niedermayer
parent
e26b066cd8
commit
e54eb8db9c
@ -49,6 +49,7 @@ Files that have MIPS copyright notice in them:
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libm_mips.h
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libm_mips.h
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* libavcodec/mips/
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* libavcodec/mips/
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aaccoder_mips.c
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aaccoder_mips.c
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aacpsy_mips.h
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ac3dsp_mips.c
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ac3dsp_mips.c
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acelp_filters_mips.c
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acelp_filters_mips.c
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acelp_vectors_mips.c
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acelp_vectors_mips.c
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@ -217,6 +217,10 @@ static const float psy_fir_coeffs[] = {
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-5.52212e-17 * 2, -0.313819 * 2
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-5.52212e-17 * 2, -0.313819 * 2
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};
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};
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#if ARCH_MIPS
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# include "mips/aacpsy_mips.h"
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#endif /* ARCH_MIPS */
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/**
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/**
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* Calculate the ABR attack threshold from the above LAME psymodel table.
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* Calculate the ABR attack threshold from the above LAME psymodel table.
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*/
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*/
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@ -560,25 +564,12 @@ static float calc_reduced_thr_3gpp(AacPsyBand *band, float min_snr,
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return thr;
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return thr;
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}
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}
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/**
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#ifndef calc_thr_3gpp
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* Calculate band thresholds as suggested in 3GPP TS26.403
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static void calc_thr_3gpp(const FFPsyWindowInfo *wi, const int num_bands, AacPsyChannel *pch,
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*/
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const uint8_t *band_sizes, const float *coefs)
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static void psy_3gpp_analyze_channel(FFPsyContext *ctx, int channel,
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const float *coefs, const FFPsyWindowInfo *wi)
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{
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{
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AacPsyContext *pctx = (AacPsyContext*) ctx->model_priv_data;
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AacPsyChannel *pch = &pctx->ch[channel];
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int start = 0;
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int i, w, g;
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int i, w, g;
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float desired_bits, desired_pe, delta_pe, reduction= NAN, spread_en[128] = {0};
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int start = 0;
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float a = 0.0f, active_lines = 0.0f, norm_fac = 0.0f;
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float pe = pctx->chan_bitrate > 32000 ? 0.0f : FFMAX(50.0f, 100.0f - pctx->chan_bitrate * 100.0f / 32000.0f);
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const int num_bands = ctx->num_bands[wi->num_windows == 8];
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const uint8_t *band_sizes = ctx->bands[wi->num_windows == 8];
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AacPsyCoeffs *coeffs = pctx->psy_coef[wi->num_windows == 8];
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const float avoid_hole_thr = wi->num_windows == 8 ? PSY_3GPP_AH_THR_SHORT : PSY_3GPP_AH_THR_LONG;
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//calculate energies, initial thresholds and related values - 5.4.2 "Threshold Calculation"
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for (w = 0; w < wi->num_windows*16; w += 16) {
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for (w = 0; w < wi->num_windows*16; w += 16) {
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for (g = 0; g < num_bands; g++) {
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for (g = 0; g < num_bands; g++) {
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AacPsyBand *band = &pch->band[w+g];
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AacPsyBand *band = &pch->band[w+g];
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@ -597,6 +588,47 @@ static void psy_3gpp_analyze_channel(FFPsyContext *ctx, int channel,
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start += band_sizes[g];
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start += band_sizes[g];
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}
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}
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}
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}
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}
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#endif /* calc_thr_3gpp */
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#ifndef psy_hp_filter
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static void psy_hp_filter(const float *firbuf, float *hpfsmpl, const float *psy_fir_coeffs)
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{
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int i, j;
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for (i = 0; i < AAC_BLOCK_SIZE_LONG; i++) {
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float sum1, sum2;
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sum1 = firbuf[i + (PSY_LAME_FIR_LEN - 1) / 2];
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sum2 = 0.0;
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for (j = 0; j < ((PSY_LAME_FIR_LEN - 1) / 2) - 1; j += 2) {
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sum1 += psy_fir_coeffs[j] * (firbuf[i + j] + firbuf[i + PSY_LAME_FIR_LEN - j]);
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sum2 += psy_fir_coeffs[j + 1] * (firbuf[i + j + 1] + firbuf[i + PSY_LAME_FIR_LEN - j - 1]);
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}
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/* NOTE: The LAME psymodel expects it's input in the range -32768 to 32768. Tuning this for normalized floats would be difficult. */
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hpfsmpl[i] = (sum1 + sum2) * 32768.0f;
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}
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}
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#endif /* psy_hp_filter */
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/**
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* Calculate band thresholds as suggested in 3GPP TS26.403
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*/
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static void psy_3gpp_analyze_channel(FFPsyContext *ctx, int channel,
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const float *coefs, const FFPsyWindowInfo *wi)
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{
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AacPsyContext *pctx = (AacPsyContext*) ctx->model_priv_data;
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AacPsyChannel *pch = &pctx->ch[channel];
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int i, w, g;
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float desired_bits, desired_pe, delta_pe, reduction= NAN, spread_en[128] = {0};
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float a = 0.0f, active_lines = 0.0f, norm_fac = 0.0f;
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float pe = pctx->chan_bitrate > 32000 ? 0.0f : FFMAX(50.0f, 100.0f - pctx->chan_bitrate * 100.0f / 32000.0f);
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const int num_bands = ctx->num_bands[wi->num_windows == 8];
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const uint8_t *band_sizes = ctx->bands[wi->num_windows == 8];
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AacPsyCoeffs *coeffs = pctx->psy_coef[wi->num_windows == 8];
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const float avoid_hole_thr = wi->num_windows == 8 ? PSY_3GPP_AH_THR_SHORT : PSY_3GPP_AH_THR_LONG;
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//calculate energies, initial thresholds and related values - 5.4.2 "Threshold Calculation"
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calc_thr_3gpp(wi, num_bands, pch, band_sizes, coefs);
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//modify thresholds and energies - spread, threshold in quiet, pre-echo control
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//modify thresholds and energies - spread, threshold in quiet, pre-echo control
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for (w = 0; w < wi->num_windows*16; w += 16) {
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for (w = 0; w < wi->num_windows*16; w += 16) {
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AacPsyBand *bands = &pch->band[w];
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AacPsyBand *bands = &pch->band[w];
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@ -802,20 +834,10 @@ static FFPsyWindowInfo psy_lame_window(FFPsyContext *ctx, const float *audio,
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float energy_subshort[(AAC_NUM_BLOCKS_SHORT + 1) * PSY_LAME_NUM_SUBBLOCKS];
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float energy_subshort[(AAC_NUM_BLOCKS_SHORT + 1) * PSY_LAME_NUM_SUBBLOCKS];
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float energy_short[AAC_NUM_BLOCKS_SHORT + 1] = { 0 };
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float energy_short[AAC_NUM_BLOCKS_SHORT + 1] = { 0 };
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const float *firbuf = la + (AAC_BLOCK_SIZE_SHORT/4 - PSY_LAME_FIR_LEN);
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const float *firbuf = la + (AAC_BLOCK_SIZE_SHORT/4 - PSY_LAME_FIR_LEN);
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int j, att_sum = 0;
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int att_sum = 0;
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/* LAME comment: apply high pass filter of fs/4 */
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/* LAME comment: apply high pass filter of fs/4 */
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for (i = 0; i < AAC_BLOCK_SIZE_LONG; i++) {
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psy_hp_filter(firbuf, hpfsmpl, psy_fir_coeffs);
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float sum1, sum2;
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sum1 = firbuf[i + (PSY_LAME_FIR_LEN - 1) / 2];
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sum2 = 0.0;
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for (j = 0; j < ((PSY_LAME_FIR_LEN - 1) / 2) - 1; j += 2) {
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sum1 += psy_fir_coeffs[j] * (firbuf[i + j] + firbuf[i + PSY_LAME_FIR_LEN - j]);
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sum2 += psy_fir_coeffs[j + 1] * (firbuf[i + j + 1] + firbuf[i + PSY_LAME_FIR_LEN - j - 1]);
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}
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/* NOTE: The LAME psymodel expects it's input in the range -32768 to 32768. Tuning this for normalized floats would be difficult. */
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hpfsmpl[i] = (sum1 + sum2) * 32768.0f;
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}
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/* Calculate the energies of each sub-shortblock */
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/* Calculate the energies of each sub-shortblock */
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for (i = 0; i < PSY_LAME_NUM_SUBBLOCKS; i++) {
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for (i = 0; i < PSY_LAME_NUM_SUBBLOCKS; i++) {
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230
libavcodec/mips/aacpsy_mips.h
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230
libavcodec/mips/aacpsy_mips.h
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@ -0,0 +1,230 @@
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/*
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* Copyright (c) 2012
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* MIPS Technologies, Inc., California.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Author: Bojan Zivkovic (bojan@mips.com)
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*
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* AAC encoder psychoacoustic model routines optimized
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* for MIPS floating-point architecture
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Reference: libavcodec/aacpsy.c
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*/
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#ifndef AVCODEC_MIPS_AACPSY_MIPS_H
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#define AVCODEC_MIPS_AACPSY_MIPS_H
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#if HAVE_INLINE_ASM && HAVE_MIPSFPU && ( PSY_LAME_FIR_LEN == 21 )
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static void calc_thr_3gpp_mips(const FFPsyWindowInfo *wi, const int num_bands,
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AacPsyChannel *pch, const uint8_t *band_sizes,
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const float *coefs)
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{
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int i, w, g;
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int start = 0;
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for (w = 0; w < wi->num_windows*16; w += 16) {
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for (g = 0; g < num_bands; g++) {
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AacPsyBand *band = &pch->band[w+g];
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float form_factor = 0.0f;
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float Temp;
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band->energy = 0.0f;
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for (i = 0; i < band_sizes[g]; i+=4) {
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float a, b, c, d;
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float ax, bx, cx, dx;
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float *cf = (float *)&coefs[start+i];
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__asm__ volatile (
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"lwc1 %[a], 0(%[cf]) \n\t"
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"lwc1 %[b], 4(%[cf]) \n\t"
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"lwc1 %[c], 8(%[cf]) \n\t"
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"lwc1 %[d], 12(%[cf]) \n\t"
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"abs.s %[a], %[a] \n\t"
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"abs.s %[b], %[b] \n\t"
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"abs.s %[c], %[c] \n\t"
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"abs.s %[d], %[d] \n\t"
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"sqrt.s %[ax], %[a] \n\t"
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"sqrt.s %[bx], %[b] \n\t"
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"sqrt.s %[cx], %[c] \n\t"
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"sqrt.s %[dx], %[d] \n\t"
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"madd.s %[e], %[e], %[a], %[a] \n\t"
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"madd.s %[e], %[e], %[b], %[b] \n\t"
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"madd.s %[e], %[e], %[c], %[c] \n\t"
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"madd.s %[e], %[e], %[d], %[d] \n\t"
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"add.s %[f], %[f], %[ax] \n\t"
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"add.s %[f], %[f], %[bx] \n\t"
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"add.s %[f], %[f], %[cx] \n\t"
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"add.s %[f], %[f], %[dx] \n\t"
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: [a]"=&f"(a), [b]"=&f"(b),
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[c]"=&f"(c), [d]"=&f"(d),
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[e]"+f"(band->energy), [f]"+f"(form_factor),
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[ax]"=&f"(ax), [bx]"=&f"(bx),
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[cx]"=&f"(cx), [dx]"=&f"(dx)
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: [cf]"r"(cf)
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: "memory"
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);
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}
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Temp = sqrtf((float)band_sizes[g] / band->energy);
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band->thr = band->energy * 0.001258925f;
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band->nz_lines = form_factor * sqrtf(Temp);
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start += band_sizes[g];
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}
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}
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}
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static void psy_hp_filter_mips(const float *firbuf, float *hpfsmpl, const float * psy_fir_coeffs)
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{
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float sum1, sum2, sum3, sum4;
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float *fb = (float*)firbuf;
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float *fb_end = fb + AAC_BLOCK_SIZE_LONG;
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float *hp = hpfsmpl;
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float coeff0 = psy_fir_coeffs[1];
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float coeff1 = psy_fir_coeffs[3];
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float coeff2 = psy_fir_coeffs[5];
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float coeff3 = psy_fir_coeffs[7];
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float coeff4 = psy_fir_coeffs[9];
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__asm__ volatile (
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".set push \n\t"
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".set noreorder \n\t"
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"li.s $f12, 32768 \n\t"
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"1: \n\t"
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"lwc1 $f0, 40(%[fb]) \n\t"
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"lwc1 $f1, 4(%[fb]) \n\t"
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"lwc1 $f2, 80(%[fb]) \n\t"
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"lwc1 $f3, 44(%[fb]) \n\t"
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"lwc1 $f4, 8(%[fb]) \n\t"
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"madd.s %[sum1], $f0, $f1, %[coeff0] \n\t"
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"lwc1 $f5, 84(%[fb]) \n\t"
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"lwc1 $f6, 48(%[fb]) \n\t"
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"madd.s %[sum2], $f3, $f4, %[coeff0] \n\t"
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"lwc1 $f7, 12(%[fb]) \n\t"
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"madd.s %[sum1], %[sum1], $f2, %[coeff0] \n\t"
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"lwc1 $f8, 88(%[fb]) \n\t"
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"lwc1 $f9, 52(%[fb]) \n\t"
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"madd.s %[sum2], %[sum2], $f5, %[coeff0] \n\t"
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"madd.s %[sum3], $f6, $f7, %[coeff0] \n\t"
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"lwc1 $f10, 16(%[fb]) \n\t"
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"lwc1 $f11, 92(%[fb]) \n\t"
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"madd.s %[sum1], %[sum1], $f7, %[coeff1] \n\t"
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"lwc1 $f1, 72(%[fb]) \n\t"
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"madd.s %[sum3], %[sum3], $f8, %[coeff0] \n\t"
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"madd.s %[sum4], $f9, $f10, %[coeff0] \n\t"
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"madd.s %[sum2], %[sum2], $f10, %[coeff1] \n\t"
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"madd.s %[sum1], %[sum1], $f1, %[coeff1] \n\t"
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"lwc1 $f4, 76(%[fb]) \n\t"
|
||||||
|
"lwc1 $f8, 20(%[fb]) \n\t"
|
||||||
|
"madd.s %[sum4], %[sum4], $f11, %[coeff0] \n\t"
|
||||||
|
"lwc1 $f11, 24(%[fb]) \n\t"
|
||||||
|
"madd.s %[sum2], %[sum2], $f4, %[coeff1] \n\t"
|
||||||
|
"madd.s %[sum1], %[sum1], $f8, %[coeff2] \n\t"
|
||||||
|
"madd.s %[sum3], %[sum3], $f8, %[coeff1] \n\t"
|
||||||
|
"madd.s %[sum4], %[sum4], $f11, %[coeff1] \n\t"
|
||||||
|
"lwc1 $f7, 64(%[fb]) \n\t"
|
||||||
|
"madd.s %[sum2], %[sum2], $f11, %[coeff2] \n\t"
|
||||||
|
"lwc1 $f10, 68(%[fb]) \n\t"
|
||||||
|
"madd.s %[sum3], %[sum3], $f2, %[coeff1] \n\t"
|
||||||
|
"madd.s %[sum4], %[sum4], $f5, %[coeff1] \n\t"
|
||||||
|
"madd.s %[sum1], %[sum1], $f7, %[coeff2] \n\t"
|
||||||
|
"madd.s %[sum2], %[sum2], $f10, %[coeff2] \n\t"
|
||||||
|
"lwc1 $f2, 28(%[fb]) \n\t"
|
||||||
|
"lwc1 $f5, 32(%[fb]) \n\t"
|
||||||
|
"lwc1 $f8, 56(%[fb]) \n\t"
|
||||||
|
"lwc1 $f11, 60(%[fb]) \n\t"
|
||||||
|
"madd.s %[sum3], %[sum3], $f2, %[coeff2] \n\t"
|
||||||
|
"madd.s %[sum4], %[sum4], $f5, %[coeff2] \n\t"
|
||||||
|
"madd.s %[sum1], %[sum1], $f2, %[coeff3] \n\t"
|
||||||
|
"madd.s %[sum2], %[sum2], $f5, %[coeff3] \n\t"
|
||||||
|
"madd.s %[sum3], %[sum3], $f1, %[coeff2] \n\t"
|
||||||
|
"madd.s %[sum4], %[sum4], $f4, %[coeff2] \n\t"
|
||||||
|
"madd.s %[sum1], %[sum1], $f8, %[coeff3] \n\t"
|
||||||
|
"madd.s %[sum2], %[sum2], $f11, %[coeff3] \n\t"
|
||||||
|
"lwc1 $f1, 36(%[fb]) \n\t"
|
||||||
|
"addiu %[fb], %[fb], 16 \n\t"
|
||||||
|
"madd.s %[sum4], %[sum4], $f0, %[coeff3] \n\t"
|
||||||
|
"madd.s %[sum3], %[sum3], $f1, %[coeff3] \n\t"
|
||||||
|
"madd.s %[sum1], %[sum1], $f1, %[coeff4] \n\t"
|
||||||
|
"madd.s %[sum2], %[sum2], $f0, %[coeff4] \n\t"
|
||||||
|
"madd.s %[sum4], %[sum4], $f10, %[coeff3] \n\t"
|
||||||
|
"madd.s %[sum3], %[sum3], $f7, %[coeff3] \n\t"
|
||||||
|
"madd.s %[sum1], %[sum1], $f6, %[coeff4] \n\t"
|
||||||
|
"madd.s %[sum2], %[sum2], $f9, %[coeff4] \n\t"
|
||||||
|
"madd.s %[sum4], %[sum4], $f6, %[coeff4] \n\t"
|
||||||
|
"madd.s %[sum3], %[sum3], $f3, %[coeff4] \n\t"
|
||||||
|
"mul.s %[sum1], %[sum1], $f12 \n\t"
|
||||||
|
"mul.s %[sum2], %[sum2], $f12 \n\t"
|
||||||
|
"madd.s %[sum4], %[sum4], $f11, %[coeff4] \n\t"
|
||||||
|
"madd.s %[sum3], %[sum3], $f8, %[coeff4] \n\t"
|
||||||
|
"swc1 %[sum1], 0(%[hp]) \n\t"
|
||||||
|
"swc1 %[sum2], 4(%[hp]) \n\t"
|
||||||
|
"mul.s %[sum4], %[sum4], $f12 \n\t"
|
||||||
|
"mul.s %[sum3], %[sum3], $f12 \n\t"
|
||||||
|
"swc1 %[sum4], 12(%[hp]) \n\t"
|
||||||
|
"swc1 %[sum3], 8(%[hp]) \n\t"
|
||||||
|
"bne %[fb], %[fb_end], 1b \n\t"
|
||||||
|
" addiu %[hp], %[hp], 16 \n\t"
|
||||||
|
|
||||||
|
".set pop \n\t"
|
||||||
|
|
||||||
|
: [sum1]"=&f"(sum1), [sum2]"=&f"(sum2),
|
||||||
|
[sum3]"=&f"(sum3), [sum4]"=&f"(sum4),
|
||||||
|
[fb]"+r"(fb), [hp]"+r"(hp)
|
||||||
|
: [coeff0]"f"(coeff0), [coeff1]"f"(coeff1),
|
||||||
|
[coeff2]"f"(coeff2), [coeff3]"f"(coeff3),
|
||||||
|
[coeff4]"f"(coeff4), [fb_end]"r"(fb_end)
|
||||||
|
: "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6",
|
||||||
|
"$f7", "$f8", "$f9", "$f10", "$f11", "$f12",
|
||||||
|
"memory"
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
#define calc_thr_3gpp calc_thr_3gpp_mips
|
||||||
|
#define psy_hp_filter psy_hp_filter_mips
|
||||||
|
|
||||||
|
#endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
|
||||||
|
#endif /* AVCODEC_MIPS_AACPSY_MIPS_H */
|
||||||
Loading…
x
Reference in New Issue
Block a user