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Diffstat (limited to '')
-rw-r--r-- | media/libvpx/libvpx/vp9/encoder/x86/vp9_quantize_sse2.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/encoder/x86/vp9_quantize_sse2.c b/media/libvpx/libvpx/vp9/encoder/x86/vp9_quantize_sse2.c new file mode 100644 index 0000000000..c877234436 --- /dev/null +++ b/media/libvpx/libvpx/vp9/encoder/x86/vp9_quantize_sse2.c @@ -0,0 +1,125 @@ +/* + * Copyright (c) 2014 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include <assert.h> +#include <emmintrin.h> +#include <xmmintrin.h> + +#include "./vp9_rtcd.h" +#include "vpx/vpx_integer.h" +#include "vpx_dsp/vpx_dsp_common.h" +#include "vpx_dsp/x86/bitdepth_conversion_sse2.h" +#include "vpx_dsp/x86/quantize_sse2.h" + +void vp9_quantize_fp_sse2(const tran_low_t *coeff_ptr, intptr_t n_coeffs, + const int16_t *round_ptr, const int16_t *quant_ptr, + tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, + const int16_t *dequant_ptr, uint16_t *eob_ptr, + const int16_t *scan, const int16_t *iscan) { + const __m128i zero = _mm_setzero_si128(); + __m128i thr; + int nzflag; + int index = 16; + __m128i round, quant, dequant; + __m128i coeff0, coeff1, coeff0_sign, coeff1_sign; + __m128i qcoeff0, qcoeff1; + __m128i eob; + + (void)scan; + + // Setup global values. + load_fp_values(round_ptr, &round, quant_ptr, &quant, dequant_ptr, &dequant); + + // Do DC and first 15 AC. + coeff0 = load_tran_low(coeff_ptr); + coeff1 = load_tran_low(coeff_ptr + 8); + + // Poor man's abs(). + coeff0_sign = _mm_srai_epi16(coeff0, 15); + coeff1_sign = _mm_srai_epi16(coeff1, 15); + qcoeff0 = invert_sign_sse2(coeff0, coeff0_sign); + qcoeff1 = invert_sign_sse2(coeff1, coeff1_sign); + + qcoeff0 = _mm_adds_epi16(qcoeff0, round); + qcoeff0 = _mm_mulhi_epi16(qcoeff0, quant); + + round = _mm_unpackhi_epi64(round, round); + quant = _mm_unpackhi_epi64(quant, quant); + + qcoeff1 = _mm_adds_epi16(qcoeff1, round); + qcoeff1 = _mm_mulhi_epi16(qcoeff1, quant); + + // Reinsert signs. + qcoeff0 = invert_sign_sse2(qcoeff0, coeff0_sign); + qcoeff1 = invert_sign_sse2(qcoeff1, coeff1_sign); + + store_tran_low(qcoeff0, qcoeff_ptr); + store_tran_low(qcoeff1, qcoeff_ptr + 8); + + qcoeff0 = _mm_mullo_epi16(qcoeff0, dequant); + dequant = _mm_unpackhi_epi64(dequant, dequant); + qcoeff1 = _mm_mullo_epi16(qcoeff1, dequant); + + store_tran_low(qcoeff0, dqcoeff_ptr); + store_tran_low(qcoeff1, dqcoeff_ptr + 8); + + eob = scan_for_eob(&qcoeff0, &qcoeff1, iscan, 0, zero); + + thr = _mm_srai_epi16(dequant, 1); + + // AC only loop. + while (index < n_coeffs) { + coeff0 = load_tran_low(coeff_ptr + index); + coeff1 = load_tran_low(coeff_ptr + index + 8); + + // Poor man's abs(). + coeff0_sign = _mm_srai_epi16(coeff0, 15); + coeff1_sign = _mm_srai_epi16(coeff1, 15); + qcoeff0 = invert_sign_sse2(coeff0, coeff0_sign); + qcoeff1 = invert_sign_sse2(coeff1, coeff1_sign); + + nzflag = _mm_movemask_epi8(_mm_cmpgt_epi16(qcoeff0, thr)) | + _mm_movemask_epi8(_mm_cmpgt_epi16(qcoeff1, thr)); + + if (nzflag) { + __m128i eob0; + qcoeff0 = _mm_adds_epi16(qcoeff0, round); + qcoeff1 = _mm_adds_epi16(qcoeff1, round); + qcoeff0 = _mm_mulhi_epi16(qcoeff0, quant); + qcoeff1 = _mm_mulhi_epi16(qcoeff1, quant); + + // Reinsert signs. + qcoeff0 = invert_sign_sse2(qcoeff0, coeff0_sign); + qcoeff1 = invert_sign_sse2(qcoeff1, coeff1_sign); + + store_tran_low(qcoeff0, qcoeff_ptr + index); + store_tran_low(qcoeff1, qcoeff_ptr + index + 8); + + qcoeff0 = _mm_mullo_epi16(qcoeff0, dequant); + qcoeff1 = _mm_mullo_epi16(qcoeff1, dequant); + + store_tran_low(qcoeff0, dqcoeff_ptr + index); + store_tran_low(qcoeff1, dqcoeff_ptr + index + 8); + + eob0 = scan_for_eob(&qcoeff0, &qcoeff1, iscan, index, zero); + eob = _mm_max_epi16(eob, eob0); + } else { + store_zero_tran_low(qcoeff_ptr + index); + store_zero_tran_low(qcoeff_ptr + index + 8); + + store_zero_tran_low(dqcoeff_ptr + index); + store_zero_tran_low(dqcoeff_ptr + index + 8); + } + + index += 16; + } + + *eob_ptr = accumulate_eob(eob); +} |