diff options
Diffstat (limited to 'third_party/aom/av1/encoder/x86/av1_quantize_sse2.c')
| -rw-r--r-- | third_party/aom/av1/encoder/x86/av1_quantize_sse2.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/x86/av1_quantize_sse2.c b/third_party/aom/av1/encoder/x86/av1_quantize_sse2.c new file mode 100644 index 0000000000..b07e7717f3 --- /dev/null +++ b/third_party/aom/av1/encoder/x86/av1_quantize_sse2.c @@ -0,0 +1,189 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include <emmintrin.h> +#include <xmmintrin.h> + +#include "config/av1_rtcd.h" + +#include "aom/aom_integer.h" + +static INLINE void read_coeff(const tran_low_t *coeff, intptr_t offset, + __m128i *c0, __m128i *c1) { + const tran_low_t *addr = coeff + offset; + if (sizeof(tran_low_t) == 4) { + const __m128i x0 = _mm_load_si128((const __m128i *)addr); + const __m128i x1 = _mm_load_si128((const __m128i *)addr + 1); + const __m128i x2 = _mm_load_si128((const __m128i *)addr + 2); + const __m128i x3 = _mm_load_si128((const __m128i *)addr + 3); + *c0 = _mm_packs_epi32(x0, x1); + *c1 = _mm_packs_epi32(x2, x3); + } else { + *c0 = _mm_load_si128((const __m128i *)addr); + *c1 = _mm_load_si128((const __m128i *)addr + 1); + } +} + +static INLINE void write_qcoeff(const __m128i *qc0, const __m128i *qc1, + tran_low_t *qcoeff, intptr_t offset) { + tran_low_t *addr = qcoeff + offset; + if (sizeof(tran_low_t) == 4) { + const __m128i zero = _mm_setzero_si128(); + __m128i sign_bits = _mm_cmplt_epi16(*qc0, zero); + __m128i y0 = _mm_unpacklo_epi16(*qc0, sign_bits); + __m128i y1 = _mm_unpackhi_epi16(*qc0, sign_bits); + _mm_store_si128((__m128i *)addr, y0); + _mm_store_si128((__m128i *)addr + 1, y1); + + sign_bits = _mm_cmplt_epi16(*qc1, zero); + y0 = _mm_unpacklo_epi16(*qc1, sign_bits); + y1 = _mm_unpackhi_epi16(*qc1, sign_bits); + _mm_store_si128((__m128i *)addr + 2, y0); + _mm_store_si128((__m128i *)addr + 3, y1); + } else { + _mm_store_si128((__m128i *)addr, *qc0); + _mm_store_si128((__m128i *)addr + 1, *qc1); + } +} + +static INLINE void write_zero(tran_low_t *qcoeff, intptr_t offset) { + const __m128i zero = _mm_setzero_si128(); + tran_low_t *addr = qcoeff + offset; + if (sizeof(tran_low_t) == 4) { + _mm_store_si128((__m128i *)addr, zero); + _mm_store_si128((__m128i *)addr + 1, zero); + _mm_store_si128((__m128i *)addr + 2, zero); + _mm_store_si128((__m128i *)addr + 3, zero); + } else { + _mm_store_si128((__m128i *)addr, zero); + _mm_store_si128((__m128i *)addr + 1, zero); + } +} + +static INLINE void quantize(const int16_t *iscan_ptr, + const tran_low_t *coeff_ptr, intptr_t n_coeffs, + tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, + const __m128i *round0, const __m128i *round1, + const __m128i *quant0, const __m128i *quant1, + const __m128i *dequant0, const __m128i *dequant1, + const __m128i *thr0, const __m128i *thr1, + __m128i *eob) { + __m128i coeff0, coeff1; + // Do DC and first 15 AC + read_coeff(coeff_ptr, n_coeffs, &coeff0, &coeff1); + + // Poor man's sign extract + const __m128i coeff0_sign = _mm_srai_epi16(coeff0, 15); + const __m128i coeff1_sign = _mm_srai_epi16(coeff1, 15); + __m128i qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign); + __m128i qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign); + qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); + qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); + const __m128i mask0 = _mm_or_si128(_mm_cmpgt_epi16(qcoeff0, *thr0), + _mm_cmpeq_epi16(qcoeff0, *thr0)); + const __m128i mask1 = _mm_or_si128(_mm_cmpgt_epi16(qcoeff1, *thr1), + _mm_cmpeq_epi16(qcoeff1, *thr1)); + const int16_t nzflag = _mm_movemask_epi8(mask0) | _mm_movemask_epi8(mask1); + + if (nzflag) { + qcoeff0 = _mm_adds_epi16(qcoeff0, *round0); + qcoeff1 = _mm_adds_epi16(qcoeff1, *round1); + const __m128i qtmp0 = _mm_mulhi_epi16(qcoeff0, *quant0); + const __m128i qtmp1 = _mm_mulhi_epi16(qcoeff1, *quant1); + + // Reinsert signs + qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign); + qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign); + qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); + qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); + + write_qcoeff(&qcoeff0, &qcoeff1, qcoeff_ptr, n_coeffs); + + coeff0 = _mm_mullo_epi16(qcoeff0, *dequant0); + coeff1 = _mm_mullo_epi16(qcoeff1, *dequant1); + + write_qcoeff(&coeff0, &coeff1, dqcoeff_ptr, n_coeffs); + + const __m128i zero = _mm_setzero_si128(); + // Scan for eob + const __m128i zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero); + const __m128i zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero); + const __m128i nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero); + const __m128i nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero); + const __m128i iscan0 = + _mm_load_si128((const __m128i *)(iscan_ptr + n_coeffs)); + const __m128i iscan1 = + _mm_load_si128((const __m128i *)(iscan_ptr + n_coeffs) + 1); + // Add one to convert from indices to counts + const __m128i iscan0_nz = _mm_sub_epi16(iscan0, nzero_coeff0); + const __m128i iscan1_nz = _mm_sub_epi16(iscan1, nzero_coeff1); + const __m128i eob0 = _mm_and_si128(iscan0_nz, nzero_coeff0); + const __m128i eob1 = _mm_and_si128(iscan1_nz, nzero_coeff1); + const __m128i eob2 = _mm_max_epi16(eob0, eob1); + *eob = _mm_max_epi16(*eob, eob2); + } else { + write_zero(qcoeff_ptr, n_coeffs); + write_zero(dqcoeff_ptr, n_coeffs); + } +} + +void av1_quantize_fp_sse2(const tran_low_t *coeff_ptr, intptr_t n_coeffs, + const int16_t *zbin_ptr, const int16_t *round_ptr, + const int16_t *quant_ptr, + const int16_t *quant_shift_ptr, + tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, + const int16_t *dequant_ptr, uint16_t *eob_ptr, + const int16_t *scan_ptr, const int16_t *iscan_ptr) { + (void)scan_ptr; + (void)zbin_ptr; + (void)quant_shift_ptr; + + coeff_ptr += n_coeffs; + iscan_ptr += n_coeffs; + qcoeff_ptr += n_coeffs; + dqcoeff_ptr += n_coeffs; + n_coeffs = -n_coeffs; + + const __m128i round0 = _mm_load_si128((const __m128i *)round_ptr); + const __m128i round1 = _mm_unpackhi_epi64(round0, round0); + const __m128i quant0 = _mm_load_si128((const __m128i *)quant_ptr); + const __m128i quant1 = _mm_unpackhi_epi64(quant0, quant0); + const __m128i dequant0 = _mm_load_si128((const __m128i *)dequant_ptr); + const __m128i dequant1 = _mm_unpackhi_epi64(dequant0, dequant0); + const __m128i thr0 = _mm_srai_epi16(dequant0, 1); + const __m128i thr1 = _mm_srai_epi16(dequant1, 1); + __m128i eob = _mm_setzero_si128(); + + quantize(iscan_ptr, coeff_ptr, n_coeffs, qcoeff_ptr, dqcoeff_ptr, &round0, + &round1, &quant0, &quant1, &dequant0, &dequant1, &thr0, &thr1, &eob); + + n_coeffs += 8 * 2; + + // AC only loop + while (n_coeffs < 0) { + quantize(iscan_ptr, coeff_ptr, n_coeffs, qcoeff_ptr, dqcoeff_ptr, &round1, + &round1, &quant1, &quant1, &dequant1, &dequant1, &thr1, &thr1, + &eob); + n_coeffs += 8 * 2; + } + + // Accumulate EOB + { + __m128i eob_shuffled; + eob_shuffled = _mm_shuffle_epi32(eob, 0xe); + eob = _mm_max_epi16(eob, eob_shuffled); + eob_shuffled = _mm_shufflelo_epi16(eob, 0xe); + eob = _mm_max_epi16(eob, eob_shuffled); + eob_shuffled = _mm_shufflelo_epi16(eob, 0x1); + eob = _mm_max_epi16(eob, eob_shuffled); + *eob_ptr = _mm_extract_epi16(eob, 1); + } +} |