diff options
author | Bojan Zivkovic <bojan@mips.com> | 2012-11-06 14:06:21 +0100 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2012-11-19 22:24:44 +0100 |
commit | a74ae4691a45c49cfc071ba7280fdcac30feb933 (patch) | |
tree | 4203e3120a11f92a62727ce5f178c5480d7f2504 /libavcodec/mips/ac3dsp_mips.c | |
parent | c02ae4827191d6da702c7baceccfa63929721a0b (diff) | |
download | ffmpeg-a74ae4691a45c49cfc071ba7280fdcac30feb933.tar.gz |
mips: Optimization of AC3 FP encoder and EAC3 FP decoder
Signed-off-by: Bojan Zivkovic <bojan@mips.com>
Reveiwed-by: Vitor Sessak <vitor1001@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/mips/ac3dsp_mips.c')
-rw-r--r-- | libavcodec/mips/ac3dsp_mips.c | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/libavcodec/mips/ac3dsp_mips.c b/libavcodec/mips/ac3dsp_mips.c new file mode 100644 index 0000000000..e50364552c --- /dev/null +++ b/libavcodec/mips/ac3dsp_mips.c @@ -0,0 +1,372 @@ +/* + * 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 + +} |