[FFmpeg-devel] [PATCH 2/2] avcodec: optimize mpegvideo decoder for Loongson-3 v1
Hendrik Leppkes
h.leppkes at gmail.com
Tue May 12 11:24:07 CEST 2015
On Mon, May 11, 2015 at 6:41 AM, 周晓勇 <zhouxiaoyong at loongson.cn> wrote:
> From 3d5a9d0d38c96d6b6ec51b082102f3a231b5b881 Mon Sep 17 00:00:00 2001
> From: ZhouXiaoyong <zhouxiaoyong at loongson.cn>
> Date: Mon, 11 May 2015 09:27:00 +0800
> Subject: [PATCH 2/2] avcodec: optimize mpegvideo decoder for Loongson-3 v1
>
> Signed-off-by: ZhouXiaoyong <zhouxiaoyong at loongson.cn>
> ---
> libavcodec/mips/Makefile | 4 +
> libavcodec/mips/mpegvideo_init.c | 44 +++
> libavcodec/mips/mpegvideo_loongson.c | 563 ++++++++++++++++++++++++++++++++++
> libavcodec/mips/mpegvideo_loongson.h | 40 +++
> libavcodec/mpegvideo.c | 2 +
> libavcodec/mpegvideo.h | 1 +
> 6 files changed, 654 insertions(+), 0 deletions(-)
>
> diff --git a/libavcodec/mips/Makefile b/libavcodec/mips/Makefile
> index eaedd7f..c9b3294 100644
> --- a/libavcodec/mips/Makefile
> +++ b/libavcodec/mips/Makefile
> @@ -22,3 +22,7 @@ OBJS-$(CONFIG_HEVC_DECODER) += mips/hevcdsp_init_mips.o
> OBJS-$(CONFIG_H264DSP) += mips/h264dsp_init_mips.o
> MSA-OBJS-$(CONFIG_HEVC_DECODER) += mips/hevcdsp_msa.o
> MSA-OBJS-$(CONFIG_H264DSP) += mips/h264dsp_msa.o
> +
> +#Loongson-3 SIMD Optimization
> +LOONGSON3-OBJS-$(CONFIG_MPEGVIDEO) += mips/mpegvideo_init.o
> +LOONGSON3-OBJS-$(CONFIG_MPEGVIDEO) += mips/mpegvideo_loongson.o
> diff --git a/libavcodec/mips/mpegvideo_init.c b/libavcodec/mips/mpegvideo_init.c
> new file mode 100644
> index 0000000..ba8c801
> --- /dev/null
> +++ b/libavcodec/mips/mpegvideo_init.c
> @@ -0,0 +1,44 @@
> +/*
> + * Loongson optimized mpegvideo
> + *
> + * Copyright (c) 2015 Loongson Technology Corporation Limited
> + * Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong at loongson.cn>
> + *
> + * 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
> + */
> +
> +#include <stdint.h>
> +
> +#include "config.h"
> +#include "libavutil/attributes.h"
> +#include "libavcodec/mpegvideo.h"
> +#include "mpegvideo_loongson.h"
> +
> +av_cold void ff_MPV_common_init_loongson(MpegEncContext *s)
> +{
> + s->dct_unquantize_h263_intra = ff_dct_unquantize_h263_intra_mmi;
> + s->dct_unquantize_h263_inter = ff_dct_unquantize_h263_inter_mmi;
> + s->dct_unquantize_mpeg1_intra = ff_dct_unquantize_mpeg1_intra_mmi;
> + s->dct_unquantize_mpeg1_inter = ff_dct_unquantize_mpeg1_inter_mmi;
> +
> + if (s->flags & CODEC_FLAG_BITEXACT) {
> + s->dct_unquantize_mpeg2_intra = ff_dct_unquantize_mpeg2_intra_bitexact_mmi;
> + }
> +
> + s->dct_unquantize_mpeg2_inter = ff_dct_unquantize_mpeg2_inter_mmi;
> + s->denoise_dct = ff_denoise_dct_mmi;
> +}
> diff --git a/libavcodec/mips/mpegvideo_loongson.c b/libavcodec/mips/mpegvideo_loongson.c
> new file mode 100644
> index 0000000..50a97f3
> --- /dev/null
> +++ b/libavcodec/mips/mpegvideo_loongson.c
> @@ -0,0 +1,563 @@
> +/*
> + * Loongson optimized mpegvideo
> + *
> + * Copyright (c) 2015 Loongson Technology Corporation Limited
> + * Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong at loongson.cn>
> + * Zhang Shuangshuang <zhangshuangshuang at ict.ac.cn>
> + *
> + * 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
> + */
> +
> +#include "mpegvideo_loongson.h"
> +
> +void ff_dct_unquantize_h263_intra_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale)
> +{
> + int64_t level, qmul, qadd, nCoeffs;
> +
> + qmul = qscale << 1;
> + assert(s->block_last_index[n]>=0 || s->h263_aic);
> +
> + if (!s->h263_aic) {
> + if (n<4)
> + level = block[0] * s->y_dc_scale;
> + else
> + level = block[0] * s->c_dc_scale;
> + qadd = (qscale-1) | 1;
> + } else {
> + qadd = 0;
> + level = block[0];
> + }
> +
> + if(s->ac_pred)
> + nCoeffs = 63;
> + else
> + nCoeffs = s->inter_scantable.raster_end[s->block_last_index[n]];
> +
> + __asm__ volatile (
> + ".set arch=loongson3a \r\n"
> + "xor $f12, $f12, $f12 \r\n"
> + "lwc1 $f12, %1 \n\r" //qmul
> + "xor $f10, $f10, $f10 \r\n"
> + "lwc1 $f10, %2 \r\n" //qadd
> + "xor $f14, $f14, $f14 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "packsswh $f10, $f10, $f10 \r\n"
> + "packsswh $f10, $f10, $f10 \r\n"
> + "psubh $f14, $f14, $f10 \r\n"
> + "xor $f8, $f8, $f8 \r\n"
> + ".p2align 4 \r\n"
> + "1: \r\n"
> + "daddu $8, %0, %3 \r\n"
> + "gsldlc1 $f0, 7($8) \r\n"
> + "gsldrc1 $f0, 0($8) \r\n"
> + "gsldlc1 $f2, 15($8) \r\n"
> + "gsldrc1 $f2, 8($8) \r\n"
> + "mov.d $f4, $f0 \r\n"
> + "mov.d $f6, $f2 \r\n"
> + "pmullh $f0, $f0, $f12 \r\n"
> + "pmullh $f2, $f2, $f12 \r\n"
> + "pcmpgth $f4, $f4, $f8 \r\n" // block[i] < 0 ? -1 : 0
> + "pcmpgth $f6, $f6, $f8 \r\n" // block[i] < 0 ? -1 : 0
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "paddh $f0, $f0, $f14 \r\n"
> + "paddh $f2, $f2, $f14 \r\n"
> + "xor $f4, $f4, $f0 \r\n"
> + "xor $f6, $f6, $f2 \r\n"
> + "pcmpeqh $f0, $f0, $f14 \r\n" // block[i] == 0 ? -1 : 0
> + "pcmpeqh $f2, $f2, $f14 \r\n" // block[i] == 0 ? -1 : 0
> + "pandn $f0, $f0, $f4 \r\n"
> + "pandn $f2, $f2, $f6 \r\n"
> + "gssdlc1 $f0, 7($8) \r\n"
> + "gssdrc1 $f0, 0($8) \r\n"
> + "gssdlc1 $f2, 15($8) \r\n"
> + "gssdrc1 $f2, 8($8) \r\n"
> + "addi %3, %3, 16 \r\n"
> + "blez %3, 1b \r\n"
> + ::"r"(block+nCoeffs),"m"(qmul),"m"(qadd),"r"(2*(-nCoeffs))
> + :"$8","memory"
> + );
> +
> + block[0] = level;
> +}
> +
> +void ff_dct_unquantize_h263_inter_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale)
> +{
> + int64_t qmul, qadd, nCoeffs;
> +
> + qmul = qscale << 1;
> + qadd = (qscale - 1) | 1;
> + assert(s->block_last_index[n]>=0 || s->h263_aic);
> + nCoeffs = s->inter_scantable.raster_end[s->block_last_index[n]];
> +
> + __asm__ volatile (
> + ".set arch=loongson3a \r\n"
> + "xor $f12, $f12, $f12 \r\n"
> + "lwc1 $f12, %1 \r\n" //qmul
> + "xor $f10, $f10, $f10 \r\n"
> + "lwc1 $f10, %2 \r\n" //qadd
> + "packsswh $f12, $f12, $f12 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "xor $f14, $f14, $f14 \r\n"
> + "packsswh $f10, $f10, $f10 \r\n"
> + "packsswh $f10, $f10, $f10 \r\n"
> + "psubh $f14, $f14, $f10 \r\n"
> + "xor $f8, $f8, $f8 \r\n"
> + ".p2align 4 \r\n"
> + "1: \r\n"
> + "daddu $8, %0, %3 \r\n"
> + "gsldlc1 $f0, 7($8) \r\n"
> + "gsldrc1 $f0, 0($8) \r\n"
> + "gsldlc1 $f2, 15($8) \r\n"
> + "gsldrc1 $f2, 8($8) \r\n"
> + "mov.d $f4, $f0 \r\n"
> + "mov.d $f6, $f2 \r\n"
> + "pmullh $f0, $f0, $f12 \r\n"
> + "pmullh $f2, $f2, $f12 \r\n"
> + "pcmpgth $f4, $f4, $f8 \r\n" // block[i] < 0 ? -1 : 0
> + "pcmpgth $f6, $f6, $f8 \r\n" // block[i] < 0 ? -1 : 0
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "paddh $f0, $f0, $f14 \r\n"
> + "paddh $f2, $f2, $f14 \r\n"
> + "xor $f4, $f4, $f0 \r\n"
> + "xor $f6, $f6, $f2 \r\n"
> + "pcmpeqh $f0, $f0, $f14 \r\n" // block[i] == 0 ? -1 : 0
> + "pcmpeqh $f2, $f2, $f14 \r\n" // block[i] == 0 ? -1 : 0
> + "pandn $f0, $f0, $f4 \r\n"
> + "pandn $f2, $f2, $f6 \r\n"
> + "gssdlc1 $f0, 7($8) \r\n"
> + "gssdrc1 $f0, 0($8) \r\n"
> + "gssdlc1 $f2, 15($8) \r\n"
> + "gssdrc1 $f2, 8($8) \r\n"
> + "addi %3, %3, 16 \r\n"
> + "blez %3, 1b \r\n"
> + ::"r"(block+nCoeffs),"m"(qmul),"m"(qadd),"r"(2*(-nCoeffs))
> + : "$8","memory"
> + );
> +}
> +
> +void ff_dct_unquantize_mpeg1_intra_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale)
> +{
> + int64_t nCoeffs;
> + const uint16_t *quant_matrix;
> + int block0;
> +
> + assert(s->block_last_index[n]>=0);
> + nCoeffs = s->intra_scantable.raster_end[s->block_last_index[n]] + 1;
> +
> + if (n<4)
> + block0 = block[0] * s->y_dc_scale;
> + else
> + block0 = block[0] * s->c_dc_scale;
> +
> + /* XXX: only mpeg1 */
> + quant_matrix = s->intra_matrix;
> +
> + __asm__ volatile (
> + ".set arch=loongson3a \r\n"
> + "pcmpeqh $f14, $f14, $f14 \r\n"
> + "dli $10, 15 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "xor $f12, $f12, $f12 \r\n"
> + "lwc1 $f12, %2 \r\n"
> + "psrlh $f14, $f14, $f16 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "or $8, %3, $0 \r\n"
> + ".p2align 4 \r\n"
> + "1: \r\n"
> + "gsldxc1 $f0, 0($8, %0) \r\n"
> + "gsldxc1 $f2, 8($8, %0) \r\n"
> + "mov.d $f16, $f0 \r\n"
> + "mov.d $f18, $f2 \r\n"
> + "gsldxc1 $f8, 0($8, %1) \r\n"
> + "gsldxc1 $f10, 8($8, %1) \r\n"
> + "pmullh $f8, $f8, $f12 \r\n" // q=qscale*quant_matrix[i]
> + "pmullh $f10, $f10, $f12 \r\n" // q=qscale*quant_matrix[i]
> + "xor $f4, $f4, $f4 \r\n"
> + "xor $f6, $f6, $f6 \r\n"
> + "pcmpgth $f4, $f4, $f0 \r\n" // block[i] < 0 ? -1 : 0
> + "pcmpgth $f6, $f6, $f2 \r\n" // block[i] < 0 ? -1 : 0
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "psubh $f0, $f0, $f4 \r\n" // abs(block[i])
> + "psubh $f2, $f2, $f6 \r\n" // abs(block[i])
> + "pmullh $f0, $f0, $f8 \r\n" // abs(block[i])*q
> + "pmullh $f2, $f2, $f10 \r\n" // abs(block[i])*q
> + "xor $f8, $f8, $f8 \r\n"
> + "xor $f10, $f10, $f10 \r\n" // FIXME slow
> + "pcmpeqh $f8, $f8, $f16 \r\n" // block[i] == 0 ? -1 : 0
> + "pcmpeqh $f10, $f10, $f18 \r\n" // block[i] == 0 ? -1 : 0
> + "dli $10, 3 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "psrah $f0, $f0, $f16 \r\n"
> + "psrah $f2, $f2, $f16 \r\n"
> + "psubh $f0, $f0, $f14 \r\n"
> + "psubh $f2, $f2, $f14 \r\n"
> + "or $f0, $f0, $f14 \r\n"
> + "or $f2, $f2, $f14 \r\n"
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "psubh $f0, $f0, $f4 \r\n"
> + "psubh $f2, $f2, $f6 \r\n"
> + "pandn $f8, $f8, $f0 \r\n"
> + "pandn $f10, $f10, $f2 \r\n"
> + "gssdxc1 $f8, 0($8, %0) \r\n"
> + "gssdxc1 $f10, 8($8, %0) \r\n"
> + "addi $8, $8, 16 \r\n"
> + "bltz $8, 1b \r\n"
> + ::"r"(block+nCoeffs),"r"(quant_matrix+nCoeffs),"m"(qscale),
> + "g"(-2*nCoeffs)
> + : "$8","$10","memory"
> + );
> +
> + block[0] = block0;
> +}
> +
> +void ff_dct_unquantize_mpeg1_inter_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale)
> +{
> + int64_t nCoeffs;
> + const uint16_t *quant_matrix;
> +
> + assert(s->block_last_index[n] >= 0);
> + nCoeffs = s->intra_scantable.raster_end[s->block_last_index[n]] + 1;
> + quant_matrix = s->inter_matrix;
> +
> + __asm__ volatile (
> + ".set arch=loongson3a \r\n"
> + "pcmpeqh $f14, $f14, $f14 \r\n"
> + "dli $10, 15 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "xor $f12, $f12, $f12 \r\n"
> + "lwc1 $f12, %2 \r\n"
> + "psrlh $f14, $f14, $f16 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "or $8, %3, $0 \r\n"
> + ".p2align 4 \r\n"
> + "1: \r\n"
> + "gsldxc1 $f0, 0($8, %0) \r\n"
> + "gsldxc1 $f2, 8($8, %0) \r\n"
> + "mov.d $f16, $f0 \r\n"
> + "mov.d $f18, $f2 \r\n"
> + "gsldxc1 $f8, 0($8, %1) \r\n"
> + "gsldxc1 $f10, 8($8, %1) \r\n"
> + "pmullh $f8, $f8, $f12 \r\n" // q=qscale*quant_matrix[i]
> + "pmullh $f10, $f10, $f12 \r\n" // q=qscale*quant_matrix[i]
> + "xor $f4, $f4, $f4 \r\n"
> + "xor $f6, $f6, $f6 \r\n"
> + "pcmpgth $f4, $f4, $f0 \r\n" // block[i] < 0 ? -1 : 0
> + "pcmpgth $f6, $f6, $f2 \r\n" // block[i] < 0 ? -1 : 0
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "psubh $f0, $f0, $f4 \r\n" // abs(block[i])
> + "psubh $f2, $f2, $f6 \r\n" // abs(block[i])
> + "paddh $f0, $f0, $f0 \r\n" // abs(block[i])*2
> + "paddh $f2, $f2, $f2 \r\n" // abs(block[i])*2
> + "paddh $f0, $f0, $f14 \r\n" // abs(block[i])*2 + 1
> + "paddh $f2, $f2, $f14 \r\n" // abs(block[i])*2 + 1
> + "pmullh $f0, $f0, $f8 \r\n" // (abs(block[i])*2 + 1)*q
> + "pmullh $f2, $f2, $f10 \r\n" // (abs(block[i])*2 + 1)*q
> + "xor $f8, $f8, $f8 \r\n"
> + "xor $f10, $f10, $f10 \r\n" // FIXME slow
> + "pcmpeqh $f8, $f8, $f16 \r\n" // block[i] == 0 ? -1 : 0
> + "pcmpeqh $f10, $f10, $f18 \r\n" // block[i] == 0 ? -1 : 0
> + "dli $10, 4 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "psrah $f0, $f0, $f16 \r\n"
> + "psrah $f2, $f2, $f16 \r\n"
> + "psubh $f0, $f0, $f14 \r\n"
> + "psubh $f2, $f2, $f14 \r\n"
> + "or $f0, $f0, $f14 \r\n"
> + "or $f2, $f2, $f14 \r\n"
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "psubh $f0, $f0, $f4 \r\n"
> + "psubh $f2, $f2, $f6 \r\n"
> + "pandn $f8, $f8, $f0 \r\n"
> + "pandn $f10, $f10, $f2 \r\n"
> + "gssdxc1 $f8, 0($8, %0) \r\n"
> + "gssdxc1 $f10, 8($8, %0) \r\n"
> + "addi $8, $8, 16 \r\n"
> + "bltz $8, 1b \r\n"
> + ::"r"(block+nCoeffs),"r"(quant_matrix+nCoeffs),"m"(qscale),
> + "g"(-2*nCoeffs)
> + :"$8","$10","memory"
> + );
> +}
> +
> +void ff_dct_unquantize_mpeg2_intra_bitexact_mmi(MpegEncContext *s,
> + int16_t *block, int n, int qscale)
> +{
> + int64_t nCoeffs;
> + const uint16_t *quant_matrix;
> + int block0;
> +
> + assert(s->block_last_index[n] >= 0);
> +
> + if (s->alternate_scan)
> + nCoeffs = 63; //FIXME
> + else
> + nCoeffs = s->intra_scantable.raster_end[s->block_last_index[n]];
> +
> + if (n<4)
> + block0 = block[0] * s->y_dc_scale;
> + else
> + block0 = block[0] * s->c_dc_scale;
> +
> + quant_matrix = s->intra_matrix;
> +
> + __asm__ volatile (
> + ".set arch=loongson3a \r\n"
> + "pcmpeqh $f14, $f14, $f14 \r\n"
> + "dli $10, 15 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "xor $f12, $f12, $f12 \r\n"
> + "lwc1 $f12, %2 \r\n"
> + "psrlh $f14, $f14, $f16 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "or $8, %3, $0 \r\n"
> + "1: \r\n"
> + "addu $2, $8, %0 \r\n"
> + "gsldlc1 $f0, 7($2) \r\n"
> + "gsldrc1 $f0, 0($2) \r\n"
> + "gsldlc1 $f2, 15($2) \r\n"
> + "gsldrc1 $f2, 8($2) \r\n"
> + "mov.d $f16, $f0 \r\n"
> + "mov.d $f18, $f2 \r\n"
> + "addu $2, $8, %1 \r\n"
> + "gsldlc1 $f8, 7($2) \r\n"
> + "gsldrc1 $f8, 0($2) \r\n"
> + "gsldlc1 $f10, 15($2) \r\n"
> + "gsldrc1 $f10, 8($2) \r\n"
> + "pmullh $f8, $f8, $f12 \r\n" // q=qscale*quant_matrix[i]
> + "pmullh $f10, $f10, $f12 \r\n" // q=qscale*quant_matrix[i]
> + "xor $f4, $f4, $f4 \r\n"
> + "xor $f6, $f6, $f6 \r\n"
> + "pcmpgth $f4, $f4, $f0 \r\n" // block[i] < 0 ? -1 : 0
> + "pcmpgth $f6, $f6, $f2 \r\n" // block[i] < 0 ? -1 : 0
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "psubh $f0, $f0, $f4 \r\n" // abs(block[i])
> + "psubh $f2, $f2, $f6 \r\n" // abs(block[i])
> + "pmullh $f0, $f0, $f8 \r\n" // abs(block[i])*q
> + "pmullh $f2, $f2, $f10 \r\n" // abs(block[i])*q
> + "xor $f8, $f8, $f8 \r\n"
> + "xor $f10, $f10, $f10 \r\n"
> + "pcmpeqh $f8, $f8, $f16 \r\n" // block[i] == 0 ? -1 : 0
> + "pcmpeqh $f10 ,$f10, $f18 \r\n" // block[i] == 0 ? -1 : 0
> + "dli $10, 3 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "psrah $f0, $f0, $f16 \r\n"
> + "psrah $f2, $f2, $f16 \r\n"
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "psubh $f0, $f0, $f4 \r\n"
> + "psubh $f2, $f2, $f6 \r\n"
> + "pandn $f8, $f8, $f0 \r\n"
> + "pandn $f10, $f10, $f2 \r\n"
> + "addu $2, $8, %0 \r\n"
> + "gssdlc1 $f8, 7($2) \r\n"
> + "gssdrc1 $f8, 0($2) \r\n"
> + "gssdlc1 $f10, 15($2) \r\n"
> + "gssdrc1 $f10, 8($2) \r\n"
> + "addi $8, $8, 16 \r\n"
> + "blez $8, 1b \r\n"
> + ::"r"(block+nCoeffs),"r"(quant_matrix+nCoeffs),"m"(qscale),
> + "g"(-2*nCoeffs)
> + : "$2","$8","$10","memory"
> + );
> +
> + block[0] = block0;
> + /* Note, we do not do mismatch control for intra as errors cannot
> + * accumulate
> + */
> +}
> +
> +void ff_dct_unquantize_mpeg2_inter_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale)
> +{
> + int64_t nCoeffs;
> + const uint16_t *quant_matrix;
> +
> + assert(s->block_last_index[n] >= 0);
> +
> + if (s->alternate_scan)
> + nCoeffs = 63; //FIXME
> + else
> + nCoeffs = s->intra_scantable.raster_end[s->block_last_index[n]];
> +
> + quant_matrix = s->inter_matrix;
> +
> + __asm__ volatile (
> + ".set arch=loongson3a \r\n"
> + "pcmpeqh $f14, $f14, $f14 \r\n"
> + "dli $10, 48 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "xor $f12, $f12, $f12 \r\n"
> + "lwc1 $f12, %2 \r\n"
> + "psrlw $f14, $f14, $f16 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "packsswh $f12, $f12, $f12 \r\n"
> + "or $8, %3, $0 \r\n"
> + "1: \r\n"
> + "addu $2, $8, %0 \r\n"
> + "gsldlc1 $f0, 7($2) \r\n"
> + "gsldrc1 $f0, 0($2) \r\n"
> + "gsldlc1 $f2, 15($2) \r\n"
> + "gsldrc1 $f2, 8($2) \r\n"
> + "mov.d $f16, $f0 \r\n"
> + "mov.d $f18, $f2 \r\n"
> + "addu $2, $8, %1 \r\n"
> + "gsldlc1 $f8, 7($2) \r\n"
> + "gsldrc1 $f8, 0($2) \r\n"
> + "gsldlc1 $f10, 15($2) \r\n"
> + "gsldrc1 $f10, 8($2) \r\n"
> + "pmullh $f8, $f8, $f12 \r\n" // q=qscale*quant_matrix[i]
> + "pmullh $f10, $f10, $f12 \r\n" // q=qscale*quant_matrix[i]
> + "xor $f4, $f4, $f4 \r\n"
> + "xor $f6, $f6, $f6 \r\n"
> + "pcmpgth $f4, $f4, $f0 \r\n" // block[i] < 0 ? -1 : 0
> + "pcmpgth $f6, $f6, $f2 \r\n" // block[i] < 0 ? -1 : 0
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "psubh $f0, $f0, $f4 \r\n" // abs(block[i])
> + "psubh $f2, $f2, $f6 \r\n" // abs(block[i])
> + "pmullh $f0, $f0, $f8 \r\n" // abs(block[i])*q
> + "pmullh $f2, $f2, $f10 \r\n" // abs(block[i])*q
> + "xor $f8, $f8, $f8 \r\n"
> + "xor $f10, $f10, $f10 \r\n"
> + "pcmpeqh $f8, $f8, $f16 \r\n" // block[i] == 0 ? -1 : 0
> + "pcmpeqh $f10 ,$f10, $f18 \r\n" // block[i] == 0 ? -1 : 0
> + "dli $10, 4 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "psrah $f0, $f0, $f16 \r\n"
> + "psrah $f2, $f2, $f16 \r\n"
> + "xor $f0, $f0, $f4 \r\n"
> + "xor $f2, $f2, $f6 \r\n"
> + "psubh $f0, $f0, $f4 \r\n"
> + "psubh $f2, $f2, $f6 \r\n"
> + "pandn $f8, $f8, $f0 \r\n"
> + "pandn $f10, $f10, $f2 \r\n"
> + "addu $2, $8, %0 \r\n"
> + "gssdlc1 $f8, 7($2) \r\n"
> + "gssdrc1 $f8, 0($2) \r\n"
> + "gssdlc1 $f10, 15($2) \r\n"
> + "gssdrc1 $f10, 8($2) \r\n"
> + "addi $8, $8, 16 \r\n"
> + "blez $8, 1b \r\n"
> + "nop \r\n"
> + "addu $2, %3, %0 \r\n"
> + "gslwlc1 $f0, 3($2) \r\n"
> + "gslwrc1 $f0, 0($2) \r\n"
> + "mov.d $f14, $f12 \r\n"
> + "dli $10, 32 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "psrlw $f14, $f14, $f16 \r\n"
> + "xor $f14, $f14, $f12 \r\n"
> + "mov.d $f12, $f14 \r\n"
> + "dli $10, 16 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "psrlw $f14, $f14, $f16 \r\n"
> + "xor $f14, $f14, $f12 \r\n"
> + "dli $10, 31 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "psllh $f14, $f14, $f16 \r\n"
> + "dli $10, 15 \r\n"
> + "dmtc1 $10, $f16 \r\n"
> + "psrlw $f14, $f14, $f16 \r\n"
> + "xor $f0, $f0, $f14 \r\n"
> + "gsswlc1 $f0, 3($2) \r\n"
> + "gsswrc1 $f0, 0($2) \r\n"
> + ::"r"(block+nCoeffs),"r"(quant_matrix+nCoeffs),"m"(qscale),
> + "g"(-2*nCoeffs)
> + : "$2","$8","$10","memory"
> + );
> + /* Note, we do not do mismatch control for intra as errors cannot
> + * accumulate
> + */
> +}
> +
> +void ff_denoise_dct_mmi(MpegEncContext *s, int16_t *block)
> +{
> + const int intra = s->mb_intra;
> + int *sum = s->dct_error_sum[intra];
> + uint16_t *offset = s->dct_offset[intra];
> +
> + s->dct_count[intra]++;
> +
> + __asm__ volatile (
> + ".set arch=loongson3a \r\n"
> + "xor $f14, $f14, $f14 \r\n"
> + "1: \r\n"
> + "ldc1 $f4, 0(%0) \r\n"
> + "xor $f0, $f0, $f0 \r\n"
> + "ldc1 $f6, 8(%0) \r\n"
> + "xor $f2, $f2, $f2 \r\n"
> + "pcmpgth $f0, $f0, $f4 \r\n"
> + "pcmpgth $f2, $f2, $f6 \r\n"
> + "xor $f4, $f4, $f0 \r\n"
> + "xor $f6, $f6, $f2 \r\n"
> + "psubh $f4, $f4, $f0 \r\n"
> + "psubh $f6, $f6, $f2 \r\n"
> + "ldc1 $f12, 0(%2) \r\n"
> + "mov.d $f8, $f4 \r\n"
> + "psubush $f4, $f4, $f12 \r\n"
> + "ldc1 $f12, 8(%2) \r\n"
> + "mov.d $f10, $f6 \r\n"
> + "psubush $f6, $f6, $f12 \r\n"
> + "xor $f4, $f4, $f0 \r\n"
> + "xor $f6, $f6, $f2 \r\n"
> + "psubh $f4, $f4, $f0 \r\n"
> + "psubh $f6, $f6, $f2 \r\n"
> + "sdc1 $f4, 0(%0) \r\n"
> + "sdc1 $f6, 8(%0) \r\n"
> + "mov.d $f4, $f8 \r\n"
> + "mov.d $f6, $f10 \r\n"
> + "punpcklhw $f8, $f8, $f14 \r\n"
> + "punpckhhw $f4, $f4, $f14 \r\n"
> + "punpcklhw $f10, $f10, $f14 \r\n"
> + "punpckhhw $f6, $f6, $f14 \r\n"
> + "ldc1 $f0, 0(%1) \r\n"
> + "paddw $f8, $f8, $f0 \r\n"
> + "ldc1 $f0, 8(%1) \r\n"
> + "paddw $f4, $f4, $f0 \r\n"
> + "ldc1 $f0, 16(%1) \r\n"
> + "paddw $f10, $f10, $f0 \r\n"
> + "ldc1 $f0, 24(%1) \r\n"
> + "paddw $f6, $f6, $f0 \r\n"
> + "sdc1 $f8, 0(%1) \r\n"
> + "sdc1 $f4, 8(%1) \r\n"
> + "sdc1 $f10, 16(%1) \r\n"
> + "sdc1 $f6, 24(%1) \r\n"
> + "addi %0, %0, 16 \r\n"
> + "addi %1, %1, 32 \r\n"
> + "addi %2, %2, 16 \r\n"
> + "sub $8, %3, %0 \r\n"
> + "bgtz $8, 1b \r\n"
> + : "+r"(block),"+r"(sum),"+r"(offset)
> + : "r"(block+64)
> + : "$8","memory"
> + );
> +}
> diff --git a/libavcodec/mips/mpegvideo_loongson.h b/libavcodec/mips/mpegvideo_loongson.h
> new file mode 100644
> index 0000000..ca95c7b
> --- /dev/null
> +++ b/libavcodec/mips/mpegvideo_loongson.h
> @@ -0,0 +1,40 @@
> +/*
> + * Loongson optimized mpegvidio
> + *
> + * Copyright (c) 2015 Loongson Technology Corporation Limited
> + * Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong at loongson.cn>
> + *
> + * 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
> + */
> +
> +#include "libavcodec/mpegvideo.h"
> +
> +//extern uint16_t inv_zigzag_direct16[64];
> +
> +void ff_dct_unquantize_h263_intra_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale);
> +void ff_dct_unquantize_h263_inter_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale);
> +void ff_dct_unquantize_mpeg1_intra_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale);
> +void ff_dct_unquantize_mpeg1_inter_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale);
> +void ff_dct_unquantize_mpeg2_intra_bitexact_mmi(MpegEncContext *s,
> + int16_t *block, int n, int qscale);
> +void ff_dct_unquantize_mpeg2_inter_mmi(MpegEncContext *s, int16_t *block,
> + int n, int qscale);
> +void ff_denoise_dct_mmi(MpegEncContext *s, int16_t *block);
> diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
> index 11d6729..d2c1750 100644
> --- a/libavcodec/mpegvideo.c
> +++ b/libavcodec/mpegvideo.c
> @@ -420,6 +420,8 @@ static av_cold int dct_init(MpegEncContext *s)
> ff_mpv_common_init_ppc(s);
> if (ARCH_X86)
> ff_mpv_common_init_x86(s);
> + if (HAVE_LOONGSON3)
> + ff_MPV_common_init_loongson(s);
Please follow the same style as the other functions -
ff_mpv_common_init_loongson, all lower-case
>
> return 0;
> }
> diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
> index 0be2024..2f0b2b2 100644
> --- a/libavcodec/mpegvideo.h
> +++ b/libavcodec/mpegvideo.h
> @@ -750,6 +750,7 @@ void ff_mpv_common_init_axp(MpegEncContext *s);
> void ff_mpv_common_init_neon(MpegEncContext *s);
> void ff_mpv_common_init_ppc(MpegEncContext *s);
> void ff_mpv_common_init_x86(MpegEncContext *s);
> +void ff_MPV_common_init_loongson(MpegEncContext *s);
>
> int ff_mpv_common_frame_size_change(MpegEncContext *s);
> void ff_mpv_common_end(MpegEncContext *s);
> --
> 1.7.1
>
> _______________________________________________
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