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ffmpeg/libavcodec/mips/ac3dsp_mips.c
Vicente Olivert Riera ad16eff64b mips: add support for R6 
Understanding the mips32r6 and mips64r6 ISAs in the configure script is
not enough. In order to have full support for MIPS R6 in FFmpeg we need
to be able to build it, and for that we need to make sure we don't use
incompatible assembler code which makes the build fail. Ifdefing the
offending code is sufficient to fix the problem.

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-03-09 20:05:04 +01:00

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/*
* 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.
*
* Authors: Branimir Vasic (bvasic@mips.com)
* Nedeljko Babic (nbabic@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"
#include "libavutil/mips/asmdefs.h"
#if HAVE_INLINE_ASM
#if HAVE_MIPSDSP
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"
PTR_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"
PTR_ADDIU " %[bap1], %[bap1], 2 \n\t"
"bnez %[cond], 2b \n\t"
PTR_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"
PTR_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"
PTR_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)
{
void *temp0, *temp2, *temp4, *temp5, *temp6, *temp7;
int temp1, temp3;
__asm__ volatile (
"andi %[temp3], %[len], 3 \n\t"
PTR_ADDU "%[temp2], %[bap], %[len] \n\t"
PTR_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"
PTR_ADDU "%[temp0], %[mant_cnt], %[temp0] \n\t"
"sll %[temp5], %[temp5], 1 \n\t"
PTR_ADDU "%[temp5], %[mant_cnt], %[temp5] \n\t"
"lhu %[temp1], 0(%[temp0]) \n\t"
"sll %[temp6], %[temp6], 1 \n\t"
PTR_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"
PTR_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"
PTR_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"
PTR_ADDIU "%[temp2],%[temp2], -1 \n\t"
"sll %[temp0], %[temp0], 1 \n\t"
PTR_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
#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
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, float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int i, j, i1, i2, i3;
float v0, v1, v2, v3;
float v4, v5, v6, v7;
float samples0, samples1, samples2, samples3, matrix_j, matrix_j2;
float *samples_p, *samples_sw, *matrix_p, **samples_x, **samples_end;
__asm__ volatile(
".set push \n\t"
".set noreorder \n\t"
"li %[i1], 2 \n\t"
"sll %[len], 2 \n\t"
"move %[i], $zero \n\t"
"sll %[j], %[in_ch], " PTRLOG " \n\t"
"bne %[out_ch], %[i1], 3f \n\t" // if (out_ch == 2)
" li %[i2], 1 \n\t"
"2: \n\t" // start of the for loop (for (i = 0; i < len; i+=4))
"move %[matrix_p], %[matrix] \n\t"
"move %[samples_x], %[samples] \n\t"
"mtc1 $zero, %[v0] \n\t"
"mtc1 $zero, %[v1] \n\t"
"mtc1 $zero, %[v2] \n\t"
"mtc1 $zero, %[v3] \n\t"
"mtc1 $zero, %[v4] \n\t"
"mtc1 $zero, %[v5] \n\t"
"mtc1 $zero, %[v6] \n\t"
"mtc1 $zero, %[v7] \n\t"
"addiu %[i1], %[i], 4 \n\t"
"addiu %[i2], %[i], 8 \n\t"
PTR_L " %[samples_p], 0(%[samples_x]) \n\t"
"addiu %[i3], %[i], 12 \n\t"
PTR_ADDU "%[samples_end],%[samples_x], %[j] \n\t"
"move %[samples_sw], %[samples_p] \n\t"
"1: \n\t" // start of the inner for loop (for (j = 0; j < in_ch; j++))
"lwc1 %[matrix_j], 0(%[matrix_p]) \n\t"
"lwc1 %[matrix_j2], 4(%[matrix_p]) \n\t"
"lwxc1 %[samples0], %[i](%[samples_p]) \n\t"
"lwxc1 %[samples1], %[i1](%[samples_p]) \n\t"
"lwxc1 %[samples2], %[i2](%[samples_p]) \n\t"
"lwxc1 %[samples3], %[i3](%[samples_p]) \n\t"
PTR_ADDIU "%[matrix_p], 8 \n\t"
PTR_ADDIU "%[samples_x]," PTRSIZE " \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"
"bne %[samples_x], %[samples_end], 1b \n\t"
PTR_L " %[samples_p], 0(%[samples_x]) \n\t"
PTR_L " %[samples_p], " PTRSIZE "(%[samples]) \n\t"
"swxc1 %[v0], %[i](%[samples_sw]) \n\t"
"swxc1 %[v1], %[i1](%[samples_sw]) \n\t"
"swxc1 %[v2], %[i2](%[samples_sw]) \n\t"
"swxc1 %[v3], %[i3](%[samples_sw]) \n\t"
"swxc1 %[v4], %[i](%[samples_p]) \n\t"
"addiu %[i], 16 \n\t"
"swxc1 %[v5], %[i1](%[samples_p]) \n\t"
"swxc1 %[v6], %[i2](%[samples_p]) \n\t"
"bne %[i], %[len], 2b \n\t"
" swxc1 %[v7], %[i3](%[samples_p]) \n\t"
"3: \n\t"
"bne %[out_ch], %[i2], 6f \n\t" // if (out_ch == 1)
" nop \n\t"
"5: \n\t" // start of the outer for loop (for (i = 0; i < len; i+=4))
"move %[matrix_p], %[matrix] \n\t"
"move %[samples_x], %[samples] \n\t"
"mtc1 $zero, %[v0] \n\t"
"mtc1 $zero, %[v1] \n\t"
"mtc1 $zero, %[v2] \n\t"
"mtc1 $zero, %[v3] \n\t"
"addiu %[i1], %[i], 4 \n\t"
"addiu %[i2], %[i], 8 \n\t"
PTR_L " %[samples_p], 0(%[samples_x]) \n\t"
"addiu %[i3], %[i], 12 \n\t"
PTR_ADDU "%[samples_end],%[samples_x], %[j] \n\t"
"move %[samples_sw], %[samples_p] \n\t"
"4: \n\t" // start of the inner for loop (for (j = 0; j < in_ch; j++))
"lwc1 %[matrix_j], 0(%[matrix_p]) \n\t"
"lwxc1 %[samples0], %[i](%[samples_p]) \n\t"
"lwxc1 %[samples1], %[i1](%[samples_p]) \n\t"
"lwxc1 %[samples2], %[i2](%[samples_p]) \n\t"
"lwxc1 %[samples3], %[i3](%[samples_p]) \n\t"
PTR_ADDIU "%[matrix_p], 8 \n\t"
PTR_ADDIU "%[samples_x]," PTRSIZE " \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"
"bne %[samples_x], %[samples_end], 4b \n\t"
PTR_L " %[samples_p], 0(%[samples_x]) \n\t"
"swxc1 %[v0], %[i](%[samples_sw]) \n\t"
"addiu %[i], 16 \n\t"
"swxc1 %[v1], %[i1](%[samples_sw]) \n\t"
"swxc1 %[v2], %[i2](%[samples_sw]) \n\t"
"bne %[i], %[len], 5b \n\t"
" swxc1 %[v3], %[i3](%[samples_sw]) \n\t"
"6: \n\t"
".set pop"
:[samples_p]"=&r"(samples_p), [matrix_j]"=&f"(matrix_j), [matrix_j2]"=&f"(matrix_j2),
[samples0]"=&f"(samples0), [samples1]"=&f"(samples1),
[samples2]"=&f"(samples2), [samples3]"=&f"(samples3),
[v0]"=&f"(v0), [v1]"=&f"(v1), [v2]"=&f"(v2), [v3]"=&f"(v3),
[v4]"=&f"(v4), [v5]"=&f"(v5), [v6]"=&f"(v6), [v7]"=&f"(v7),
[samples_x]"=&r"(samples_x), [matrix_p]"=&r"(matrix_p),
[samples_end]"=&r"(samples_end), [samples_sw]"=&r"(samples_sw),
[i1]"=&r"(i1), [i2]"=&r"(i2), [i3]"=&r"(i3), [i]"=&r"(i),
[j]"=&r"(j), [len]"+r"(len)
:[samples]"r"(samples), [matrix]"r"(matrix),
[in_ch]"r"(in_ch), [out_ch]"r"(out_ch)
:"memory"
);
}
#endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */
#endif /* HAVE_MIPSFPU */
#endif /* HAVE_INLINE_ASM */
void ff_ac3dsp_init_mips(AC3DSPContext *c, int bit_exact) {
#if HAVE_INLINE_ASM
#if HAVE_MIPSDSP
c->bit_alloc_calc_bap = ac3_bit_alloc_calc_bap_mips;
c->update_bap_counts = ac3_update_bap_counts_mips;
#endif
#if HAVE_MIPSFPU
#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
c->float_to_fixed24 = float_to_fixed24_mips;
c->downmix = ac3_downmix_mips;
#endif
#endif
#endif
}
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