mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
373 lines
19 KiB
C
373 lines
19 KiB
C
/*
|
|
* Copyright (c) 2012
|
|
* MIPS Technologies, Inc., California.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* Author: Branimir Vasic (bvasic@mips.com)
|
|
*
|
|
* Various AC-3 DSP Utils optimized for MIPS
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Reference: libavcodec/ac3dsp.c
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "libavcodec/ac3dsp.h"
|
|
#include "libavcodec/ac3.h"
|
|
|
|
|
|
#if HAVE_INLINE_ASM
|
|
#if HAVE_MIPSDSPR1
|
|
static void ac3_bit_alloc_calc_bap_mips(int16_t *mask, int16_t *psd,
|
|
int start, int end,
|
|
int snr_offset, int floor,
|
|
const uint8_t *bap_tab, uint8_t *bap)
|
|
{
|
|
int band, band_end, cond;
|
|
int m, address1, address2;
|
|
int16_t *psd1, *psd_end;
|
|
uint8_t *bap1;
|
|
|
|
if (snr_offset == -960) {
|
|
memset(bap, 0, AC3_MAX_COEFS);
|
|
return;
|
|
}
|
|
|
|
psd1 = &psd[start];
|
|
bap1 = &bap[start];
|
|
band = ff_ac3_bin_to_band_tab[start];
|
|
|
|
do {
|
|
m = (FFMAX(mask[band] - snr_offset - floor, 0) & 0x1FE0) + floor;
|
|
band_end = ff_ac3_band_start_tab[++band];
|
|
band_end = FFMIN(band_end, end);
|
|
psd_end = psd + band_end - 1;
|
|
|
|
__asm__ volatile (
|
|
"slt %[cond], %[psd1], %[psd_end] \n\t"
|
|
"beqz %[cond], 1f \n\t"
|
|
"2: \n\t"
|
|
"lh %[address1], 0(%[psd1]) \n\t"
|
|
"lh %[address2], 2(%[psd1]) \n\t"
|
|
"addiu %[psd1], %[psd1], 4 \n\t"
|
|
"subu %[address1], %[address1], %[m] \n\t"
|
|
"sra %[address1], %[address1], 5 \n\t"
|
|
"addiu %[address1], %[address1], -32 \n\t"
|
|
"shll_s.w %[address1], %[address1], 26 \n\t"
|
|
"subu %[address2], %[address2], %[m] \n\t"
|
|
"sra %[address2], %[address2], 5 \n\t"
|
|
"sra %[address1], %[address1], 26 \n\t"
|
|
"addiu %[address1], %[address1], 32 \n\t"
|
|
"lbux %[address1], %[address1](%[bap_tab]) \n\t"
|
|
"addiu %[address2], %[address2], -32 \n\t"
|
|
"shll_s.w %[address2], %[address2], 26 \n\t"
|
|
"sb %[address1], 0(%[bap1]) \n\t"
|
|
"slt %[cond], %[psd1], %[psd_end] \n\t"
|
|
"sra %[address2], %[address2], 26 \n\t"
|
|
"addiu %[address2], %[address2], 32 \n\t"
|
|
"lbux %[address2], %[address2](%[bap_tab]) \n\t"
|
|
"sb %[address2], 1(%[bap1]) \n\t"
|
|
"addiu %[bap1], %[bap1], 2 \n\t"
|
|
"bnez %[cond], 2b \n\t"
|
|
"addiu %[psd_end], %[psd_end], 2 \n\t"
|
|
"slt %[cond], %[psd1], %[psd_end] \n\t"
|
|
"beqz %[cond], 3f \n\t"
|
|
"1: \n\t"
|
|
"lh %[address1], 0(%[psd1]) \n\t"
|
|
"addiu %[psd1], %[psd1], 2 \n\t"
|
|
"subu %[address1], %[address1], %[m] \n\t"
|
|
"sra %[address1], %[address1], 5 \n\t"
|
|
"addiu %[address1], %[address1], -32 \n\t"
|
|
"shll_s.w %[address1], %[address1], 26 \n\t"
|
|
"sra %[address1], %[address1], 26 \n\t"
|
|
"addiu %[address1], %[address1], 32 \n\t"
|
|
"lbux %[address1], %[address1](%[bap_tab]) \n\t"
|
|
"sb %[address1], 0(%[bap1]) \n\t"
|
|
"addiu %[bap1], %[bap1], 1 \n\t"
|
|
"3: \n\t"
|
|
|
|
: [address1]"=&r"(address1), [address2]"=&r"(address2),
|
|
[cond]"=&r"(cond), [bap1]"+r"(bap1),
|
|
[psd1]"+r"(psd1), [psd_end]"+r"(psd_end)
|
|
: [m]"r"(m), [bap_tab]"r"(bap_tab)
|
|
: "memory"
|
|
);
|
|
} while (end > band_end);
|
|
}
|
|
|
|
static void ac3_update_bap_counts_mips(uint16_t mant_cnt[16], uint8_t *bap,
|
|
int len)
|
|
{
|
|
int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
|
|
|
|
__asm__ volatile (
|
|
"andi %[temp3], %[len], 3 \n\t"
|
|
"addu %[temp2], %[bap], %[len] \n\t"
|
|
"addu %[temp4], %[bap], %[temp3] \n\t"
|
|
"beq %[temp2], %[temp4], 4f \n\t"
|
|
"1: \n\t"
|
|
"lbu %[temp0], -1(%[temp2]) \n\t"
|
|
"lbu %[temp5], -2(%[temp2]) \n\t"
|
|
"lbu %[temp6], -3(%[temp2]) \n\t"
|
|
"sll %[temp0], %[temp0], 1 \n\t"
|
|
"addu %[temp0], %[mant_cnt], %[temp0] \n\t"
|
|
"sll %[temp5], %[temp5], 1 \n\t"
|
|
"addu %[temp5], %[mant_cnt], %[temp5] \n\t"
|
|
"lhu %[temp1], 0(%[temp0]) \n\t"
|
|
"sll %[temp6], %[temp6], 1 \n\t"
|
|
"addu %[temp6], %[mant_cnt], %[temp6] \n\t"
|
|
"addiu %[temp1], %[temp1], 1 \n\t"
|
|
"sh %[temp1], 0(%[temp0]) \n\t"
|
|
"lhu %[temp1], 0(%[temp5]) \n\t"
|
|
"lbu %[temp7], -4(%[temp2]) \n\t"
|
|
"addiu %[temp2], %[temp2], -4 \n\t"
|
|
"addiu %[temp1], %[temp1], 1 \n\t"
|
|
"sh %[temp1], 0(%[temp5]) \n\t"
|
|
"lhu %[temp1], 0(%[temp6]) \n\t"
|
|
"sll %[temp7], %[temp7], 1 \n\t"
|
|
"addu %[temp7], %[mant_cnt], %[temp7] \n\t"
|
|
"addiu %[temp1], %[temp1],1 \n\t"
|
|
"sh %[temp1], 0(%[temp6]) \n\t"
|
|
"lhu %[temp1], 0(%[temp7]) \n\t"
|
|
"addiu %[temp1], %[temp1], 1 \n\t"
|
|
"sh %[temp1], 0(%[temp7]) \n\t"
|
|
"bne %[temp2], %[temp4], 1b \n\t"
|
|
"4: \n\t"
|
|
"beqz %[temp3], 2f \n\t"
|
|
"3: \n\t"
|
|
"addiu %[temp3], %[temp3], -1 \n\t"
|
|
"lbu %[temp0], -1(%[temp2]) \n\t"
|
|
"addiu %[temp2], %[temp2], -1 \n\t"
|
|
"sll %[temp0], %[temp0], 1 \n\t"
|
|
"addu %[temp0], %[mant_cnt], %[temp0] \n\t"
|
|
"lhu %[temp1], 0(%[temp0]) \n\t"
|
|
"addiu %[temp1], %[temp1], 1 \n\t"
|
|
"sh %[temp1], 0(%[temp0]) \n\t"
|
|
"bgtz %[temp3], 3b \n\t"
|
|
"2: \n\t"
|
|
|
|
: [temp0] "=&r" (temp0), [temp1] "=&r" (temp1),
|
|
[temp2] "=&r" (temp2), [temp3] "=&r" (temp3),
|
|
[temp4] "=&r" (temp4), [temp5] "=&r" (temp5),
|
|
[temp6] "=&r" (temp6), [temp7] "=&r" (temp7)
|
|
: [len] "r" (len), [bap] "r" (bap),
|
|
[mant_cnt] "r" (mant_cnt)
|
|
: "memory"
|
|
);
|
|
}
|
|
#endif
|
|
|
|
#if HAVE_MIPSFPU
|
|
static void float_to_fixed24_mips(int32_t *dst, const float *src, unsigned int len)
|
|
{
|
|
const float scale = 1 << 24;
|
|
float src0, src1, src2, src3, src4, src5, src6, src7;
|
|
int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
|
|
|
|
do {
|
|
__asm__ volatile (
|
|
"lwc1 %[src0], 0(%[src]) \n\t"
|
|
"lwc1 %[src1], 4(%[src]) \n\t"
|
|
"lwc1 %[src2], 8(%[src]) \n\t"
|
|
"lwc1 %[src3], 12(%[src]) \n\t"
|
|
"lwc1 %[src4], 16(%[src]) \n\t"
|
|
"lwc1 %[src5], 20(%[src]) \n\t"
|
|
"lwc1 %[src6], 24(%[src]) \n\t"
|
|
"lwc1 %[src7], 28(%[src]) \n\t"
|
|
"mul.s %[src0], %[src0], %[scale] \n\t"
|
|
"mul.s %[src1], %[src1], %[scale] \n\t"
|
|
"mul.s %[src2], %[src2], %[scale] \n\t"
|
|
"mul.s %[src3], %[src3], %[scale] \n\t"
|
|
"mul.s %[src4], %[src4], %[scale] \n\t"
|
|
"mul.s %[src5], %[src5], %[scale] \n\t"
|
|
"mul.s %[src6], %[src6], %[scale] \n\t"
|
|
"mul.s %[src7], %[src7], %[scale] \n\t"
|
|
"cvt.w.s %[src0], %[src0] \n\t"
|
|
"cvt.w.s %[src1], %[src1] \n\t"
|
|
"cvt.w.s %[src2], %[src2] \n\t"
|
|
"cvt.w.s %[src3], %[src3] \n\t"
|
|
"cvt.w.s %[src4], %[src4] \n\t"
|
|
"cvt.w.s %[src5], %[src5] \n\t"
|
|
"cvt.w.s %[src6], %[src6] \n\t"
|
|
"cvt.w.s %[src7], %[src7] \n\t"
|
|
"mfc1 %[temp0], %[src0] \n\t"
|
|
"mfc1 %[temp1], %[src1] \n\t"
|
|
"mfc1 %[temp2], %[src2] \n\t"
|
|
"mfc1 %[temp3], %[src3] \n\t"
|
|
"mfc1 %[temp4], %[src4] \n\t"
|
|
"mfc1 %[temp5], %[src5] \n\t"
|
|
"mfc1 %[temp6], %[src6] \n\t"
|
|
"mfc1 %[temp7], %[src7] \n\t"
|
|
"sw %[temp0], 0(%[dst]) \n\t"
|
|
"sw %[temp1], 4(%[dst]) \n\t"
|
|
"sw %[temp2], 8(%[dst]) \n\t"
|
|
"sw %[temp3], 12(%[dst]) \n\t"
|
|
"sw %[temp4], 16(%[dst]) \n\t"
|
|
"sw %[temp5], 20(%[dst]) \n\t"
|
|
"sw %[temp6], 24(%[dst]) \n\t"
|
|
"sw %[temp7], 28(%[dst]) \n\t"
|
|
|
|
: [dst] "+r" (dst), [src] "+r" (src),
|
|
[src0] "=&f" (src0), [src1] "=&f" (src1),
|
|
[src2] "=&f" (src2), [src3] "=&f" (src3),
|
|
[src4] "=&f" (src4), [src5] "=&f" (src5),
|
|
[src6] "=&f" (src6), [src7] "=&f" (src7),
|
|
[temp0] "=r" (temp0), [temp1] "=r" (temp1),
|
|
[temp2] "=r" (temp2), [temp3] "=r" (temp3),
|
|
[temp4] "=r" (temp4), [temp5] "=r" (temp5),
|
|
[temp6] "=r" (temp6), [temp7] "=r" (temp7)
|
|
: [scale] "f" (scale)
|
|
: "memory"
|
|
);
|
|
src = src + 8;
|
|
dst = dst + 8;
|
|
len -= 8;
|
|
} while (len > 0);
|
|
}
|
|
|
|
static void ac3_downmix_mips(float (*samples)[256], float (*matrix)[2], int out_ch, int in_ch, int len)
|
|
{
|
|
int i, j;
|
|
float v0, v1, v2, v3;
|
|
float v4, v5, v6, v7;
|
|
float samples0, samples1, samples2, samples3, matrix_j, matrix_j2;
|
|
float *samples_p,*matrix_p;
|
|
if (out_ch == 2) {
|
|
for (i = 0; i < len; i += 4) {
|
|
v0 = v1 = v2 = v3 = 0.0f;
|
|
v4 = v5 = v6 = v7 = 0.0f;
|
|
samples_p = &samples[0][i];
|
|
matrix_p = &matrix[0][0];
|
|
__asm__ volatile (
|
|
"move %[j], $zero \n\t"
|
|
"1: \n\t"
|
|
"lwc1 %[matrix_j], 0(%[matrix_p]) \n\t"
|
|
"lwc1 %[matrix_j2], 4(%[matrix_p]) \n\t"
|
|
"lwc1 %[samples0], 0(%[samples_p]) \n\t"
|
|
"lwc1 %[samples1], 4(%[samples_p]) \n\t"
|
|
"lwc1 %[samples2], 8(%[samples_p]) \n\t"
|
|
"lwc1 %[samples3], 12(%[samples_p]) \n\t"
|
|
"addiu %[matrix_p], 8 \n\t"
|
|
"madd.s %[v0], %[v0], %[samples0], %[matrix_j] \n\t"
|
|
"madd.s %[v1], %[v1], %[samples1], %[matrix_j] \n\t"
|
|
"madd.s %[v2], %[v2], %[samples2], %[matrix_j] \n\t"
|
|
"madd.s %[v3], %[v3], %[samples3], %[matrix_j] \n\t"
|
|
"madd.s %[v4], %[v4], %[samples0], %[matrix_j2]\n\t"
|
|
"madd.s %[v5], %[v5], %[samples1], %[matrix_j2]\n\t"
|
|
"madd.s %[v6], %[v6], %[samples2], %[matrix_j2]\n\t"
|
|
"madd.s %[v7], %[v7], %[samples3], %[matrix_j2]\n\t"
|
|
"addiu %[j], 1 \n\t"
|
|
"addiu %[samples_p], 1024 \n\t"
|
|
"bne %[j], %[in_ch], 1b \n\t"
|
|
:[samples0]"=&f"(samples0), [samples1]"=&f"(samples1),
|
|
[samples2]"=&f"(samples2), [samples3]"=&f"(samples3),
|
|
[samples_p]"+r"(samples_p), [matrix_j]"=&f"(matrix_j),
|
|
[matrix_p]"+r"(matrix_p), [v0]"+f"(v0), [v1]"+f"(v1),
|
|
[v2]"+f"(v2), [v3]"+f"(v3), [v4]"+f"(v4), [v5]"+f"(v5),
|
|
[v6]"+f"(v6), [v7]"+f"(v7),[j]"=&r"(j), [matrix_j2]"=&f"(matrix_j2)
|
|
:[in_ch]"r"(in_ch)
|
|
:"memory"
|
|
);
|
|
samples[0][i ] = v0;
|
|
samples[0][i+1] = v1;
|
|
samples[0][i+2] = v2;
|
|
samples[0][i+3] = v3;
|
|
samples[1][i ] = v4;
|
|
samples[1][i+1] = v5;
|
|
samples[1][i+2] = v6;
|
|
samples[1][i+3] = v7;
|
|
}
|
|
} else if (out_ch == 1) {
|
|
for (i = 0; i < len; i += 4) {
|
|
v0 = v1 = v2 = v3 = 0.0f;
|
|
samples_p = &samples[0][i];
|
|
matrix_p = &matrix[0][0];
|
|
__asm__ volatile (
|
|
"move %[j], $zero \n\t"
|
|
"1: \n\t"
|
|
"lwc1 %[matrix_j], 0(%[matrix_p]) \n\t"
|
|
"lwc1 %[samples0], 0(%[samples_p]) \n\t"
|
|
"lwc1 %[samples1], 4(%[samples_p]) \n\t"
|
|
"lwc1 %[samples2], 8(%[samples_p]) \n\t"
|
|
"lwc1 %[samples3], 12(%[samples_p]) \n\t"
|
|
"addiu %[matrix_p], 8 \n\t"
|
|
"madd.s %[v0], %[v0], %[samples0], %[matrix_j] \n\t"
|
|
"madd.s %[v1], %[v1], %[samples1], %[matrix_j] \n\t"
|
|
"madd.s %[v2], %[v2], %[samples2], %[matrix_j] \n\t"
|
|
"madd.s %[v3], %[v3], %[samples3], %[matrix_j] \n\t"
|
|
"addiu %[j], 1 \n\t"
|
|
"addiu %[samples_p], 1024 \n\t"
|
|
"bne %[j], %[in_ch], 1b \n\t"
|
|
:[samples0]"=&f"(samples0), [samples1]"=&f"(samples1),
|
|
[samples2]"=&f"(samples2), [samples3]"=&f"(samples3),
|
|
[samples_p]"+r"(samples_p), [matrix_j]"=&f"(matrix_j),
|
|
[matrix_p]"+r"(matrix_p), [v0]"+f"(v0), [v1]"+f"(v1),
|
|
[v2]"+f"(v2), [v3]"+f"(v3), [j]"=&r"(j)
|
|
:[in_ch]"r"(in_ch)
|
|
:"memory"
|
|
);
|
|
samples[0][i ] = v0;
|
|
samples[0][i+1] = v1;
|
|
samples[0][i+2] = v2;
|
|
samples[0][i+3] = v3;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#endif /* HAVE_INLINE_ASM */
|
|
|
|
void ff_ac3dsp_init_mips(AC3DSPContext *c, int bit_exact) {
|
|
#if HAVE_INLINE_ASM
|
|
#if HAVE_MIPSDSPR1
|
|
c->bit_alloc_calc_bap = ac3_bit_alloc_calc_bap_mips;
|
|
c->update_bap_counts = ac3_update_bap_counts_mips;
|
|
#endif
|
|
#if HAVE_MIPSFPU
|
|
c->float_to_fixed24 = float_to_fixed24_mips;
|
|
// c->downmix = ac3_downmix_mips;
|
|
#endif
|
|
#endif
|
|
|
|
}
|