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third_party_ffmpeg/libavcodec/mips/mpegvideo_msa.c
Shivraj Patil 2eb28e889d avcodec/mips: MSA (MIPS-SIMD-Arch) optimizations for mpegvideo functions 
This patch adds MSA (MIPS-SIMD-Arch) optimizations for mpegvideo functions in new file mpegvideo_msa.c

Signed-off-by: Shivraj Patil <shivraj.patil@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-07-01 17:32:47 +02:00

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/*
* Copyright (c) 2015 Manojkumar Bhosale (Manojkumar.Bhosale@imgtec.com)
*
* 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 "libavutil/mips/generic_macros_msa.h"
#include "h263dsp_mips.h"
static void h263_dct_unquantize_msa(int16_t *block, int16_t qmul,
int16_t qadd, int8_t n_coeffs,
uint8_t loop_start)
{
int16_t *block_dup = block;
int32_t level, cnt;
v8i16 block_vec, qmul_vec, qadd_vec, sub;
v8i16 add, mask, mul, zero_mask;
qmul_vec = __msa_fill_h(qmul);
qadd_vec = __msa_fill_h(qadd);
for (cnt = 0; cnt < (n_coeffs >> 3); cnt++) {
block_vec = LD_SH(block_dup + loop_start);
mask = __msa_clti_s_h(block_vec, 0);
zero_mask = __msa_ceqi_h(block_vec, 0);
mul = block_vec * qmul_vec;
sub = mul - qadd_vec;
add = mul + qadd_vec;
add = (v8i16) __msa_bmnz_v((v16u8) add, (v16u8) sub, (v16u8) mask);
block_vec = (v8i16) __msa_bmnz_v((v16u8) add, (v16u8) block_vec,
(v16u8) zero_mask);
ST_SH(block_vec, block_dup + loop_start);
block_dup += 8;
}
cnt = ((n_coeffs >> 3) * 8) + loop_start;
for (; cnt <= n_coeffs; cnt++) {
level = block[cnt];
if (level) {
if (level < 0) {
level = level * qmul - qadd;
} else {
level = level * qmul + qadd;
}
block[cnt] = level;
}
}
}
static int32_t mpeg2_dct_unquantize_inter_msa(int16_t *block,
int32_t qscale,
const int16_t *quant_matrix)
{
int32_t cnt, sum_res = -1;
v8i16 block_vec, block_neg, qscale_vec, mask;
v8i16 block_org0, block_org1, block_org2, block_org3;
v8i16 quant_m0, quant_m1, quant_m2, quant_m3;
v8i16 sum, mul, zero_mask;
v4i32 mul_vec, qscale_l, qscale_r, quant_m_r, quant_m_l;
v4i32 block_l, block_r, sad;
qscale_vec = __msa_fill_h(qscale);
for (cnt = 0; cnt < 2; cnt++) {
LD_SH4(block, 8, block_org0, block_org1, block_org2, block_org3);
LD_SH4(quant_matrix, 8, quant_m0, quant_m1, quant_m2, quant_m3);
mask = __msa_clti_s_h(block_org0, 0);
zero_mask = __msa_ceqi_h(block_org0, 0);
block_neg = -block_org0;
block_vec = (v8i16) __msa_bmnz_v((v16u8) block_org0, (v16u8) block_neg,
(v16u8) mask);
block_vec <<= 1;
block_vec += 1;
UNPCK_SH_SW(block_vec, block_r, block_l);
UNPCK_SH_SW(qscale_vec, qscale_r, qscale_l);
UNPCK_SH_SW(quant_m0, quant_m_r, quant_m_l);
mul_vec = block_l * qscale_l;
mul_vec *= quant_m_l;
block_l = mul_vec >> 4;
mul_vec = block_r * qscale_r;
mul_vec *= quant_m_r;
block_r = mul_vec >> 4;
mul = (v8i16) __msa_pckev_h((v8i16) block_l, (v8i16) block_r);
block_neg = - mul;
sum = (v8i16) __msa_bmnz_v((v16u8) mul, (v16u8) block_neg,
(v16u8) mask);
sum = (v8i16) __msa_bmnz_v((v16u8) sum, (v16u8) block_org0,
(v16u8) zero_mask);
ST_SH(sum, block);
block += 8;
quant_matrix += 8;
sad = __msa_hadd_s_w(sum, sum);
sum_res += HADD_SW_S32(sad);
mask = __msa_clti_s_h(block_org1, 0);
zero_mask = __msa_ceqi_h(block_org1, 0);
block_neg = - block_org1;
block_vec = (v8i16) __msa_bmnz_v((v16u8) block_org1, (v16u8) block_neg,
(v16u8) mask);
block_vec <<= 1;
block_vec += 1;
UNPCK_SH_SW(block_vec, block_r, block_l);
UNPCK_SH_SW(qscale_vec, qscale_r, qscale_l);
UNPCK_SH_SW(quant_m1, quant_m_r, quant_m_l);
mul_vec = block_l * qscale_l;
mul_vec *= quant_m_l;
block_l = mul_vec >> 4;
mul_vec = block_r * qscale_r;
mul_vec *= quant_m_r;
block_r = mul_vec >> 4;
mul = __msa_pckev_h((v8i16) block_l, (v8i16) block_r);
block_neg = - mul;
sum = (v8i16) __msa_bmnz_v((v16u8) mul, (v16u8) block_neg,
(v16u8) mask);
sum = (v8i16) __msa_bmnz_v((v16u8) sum, (v16u8) block_org1,
(v16u8) zero_mask);
ST_SH(sum, block);
block += 8;
quant_matrix += 8;
sad = __msa_hadd_s_w(sum, sum);
sum_res += HADD_SW_S32(sad);
mask = __msa_clti_s_h(block_org2, 0);
zero_mask = __msa_ceqi_h(block_org2, 0);
block_neg = - block_org2;
block_vec = (v8i16) __msa_bmnz_v((v16u8) block_org2, (v16u8) block_neg,
(v16u8) mask);
block_vec <<= 1;
block_vec += 1;
UNPCK_SH_SW(block_vec, block_r, block_l);
UNPCK_SH_SW(qscale_vec, qscale_r, qscale_l);
UNPCK_SH_SW(quant_m2, quant_m_r, quant_m_l);
mul_vec = block_l * qscale_l;
mul_vec *= quant_m_l;
block_l = mul_vec >> 4;
mul_vec = block_r * qscale_r;
mul_vec *= quant_m_r;
block_r = mul_vec >> 4;
mul = __msa_pckev_h((v8i16) block_l, (v8i16) block_r);
block_neg = - mul;
sum = (v8i16) __msa_bmnz_v((v16u8) mul, (v16u8) block_neg,
(v16u8) mask);
sum = (v8i16) __msa_bmnz_v((v16u8) sum, (v16u8) block_org2,
(v16u8) zero_mask);
ST_SH(sum, block);
block += 8;
quant_matrix += 8;
sad = __msa_hadd_s_w(sum, sum);
sum_res += HADD_SW_S32(sad);
mask = __msa_clti_s_h(block_org3, 0);
zero_mask = __msa_ceqi_h(block_org3, 0);
block_neg = - block_org3;
block_vec = (v8i16) __msa_bmnz_v((v16u8) block_org3, (v16u8) block_neg,
(v16u8) mask);
block_vec <<= 1;
block_vec += 1;
UNPCK_SH_SW(block_vec, block_r, block_l);
UNPCK_SH_SW(qscale_vec, qscale_r, qscale_l);
UNPCK_SH_SW(quant_m3, quant_m_r, quant_m_l);
mul_vec = block_l * qscale_l;
mul_vec *= quant_m_l;
block_l = mul_vec >> 4;
mul_vec = block_r * qscale_r;
mul_vec *= quant_m_r;
block_r = mul_vec >> 4;
mul = __msa_pckev_h((v8i16) block_l, (v8i16) block_r);
block_neg = - mul;
sum = (v8i16) __msa_bmnz_v((v16u8) mul, (v16u8) block_neg,
(v16u8) mask);
sum = (v8i16) __msa_bmnz_v((v16u8) sum, (v16u8) block_org3,
(v16u8) zero_mask);
ST_SH(sum, block);
block += 8;
quant_matrix += 8;
sad = __msa_hadd_s_w(sum, sum);
sum_res += HADD_SW_S32(sad);
}
return sum_res;
}
void ff_dct_unquantize_h263_intra_msa(MpegEncContext *s,
int16_t *block, int32_t index,
int32_t qscale)
{
int32_t qmul, qadd;
int32_t nCoeffs;
av_assert2(s->block_last_index[index] >= 0 || s->h263_aic);
qmul = qscale << 1;
if (!s->h263_aic) {
block[0] *= index < 4 ? s->y_dc_scale : s->c_dc_scale;
qadd = (qscale - 1) | 1;
} else {
qadd = 0;
}
if (s->ac_pred)
nCoeffs = 63;
else
nCoeffs = s->inter_scantable.raster_end[s->block_last_index[index]];
h263_dct_unquantize_msa(block, qmul, qadd, nCoeffs, 1);
}
void ff_dct_unquantize_h263_inter_msa(MpegEncContext *s,
int16_t *block, int32_t index,
int32_t qscale)
{
int32_t qmul, qadd;
int32_t nCoeffs;
av_assert2(s->block_last_index[index] >= 0);
qadd = (qscale - 1) | 1;
qmul = qscale << 1;
nCoeffs = s->inter_scantable.raster_end[s->block_last_index[index]];
h263_dct_unquantize_msa(block, qmul, qadd, nCoeffs, 0);
}
void ff_dct_unquantize_mpeg2_inter_msa(MpegEncContext *s,
int16_t *block, int32_t index,
int32_t qscale)
{
const uint16_t *quant_matrix;
int32_t sum = -1;
quant_matrix = s->inter_matrix;
sum = mpeg2_dct_unquantize_inter_msa(block, qscale, quant_matrix);
block[63] ^= sum & 1;
}
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