Index: source/libvpx/vp8/encoder/x86/quantize_sse4.c |
=================================================================== |
--- source/libvpx/vp8/encoder/x86/quantize_sse4.c (revision 0) |
+++ source/libvpx/vp8/encoder/x86/quantize_sse4.c (revision 0) |
@@ -0,0 +1,128 @@ |
+/* |
+ * Copyright (c) 2012 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 <smmintrin.h> /* SSE4.1 */ |
+ |
+#include "./vp8_rtcd.h" |
+#include "vp8/encoder/block.h" |
+#include "vp8/common/entropy.h" /* vp8_default_inv_zig_zag */ |
+ |
+#define SELECT_EOB(i, z, x, y, q) \ |
+ do { \ |
+ short boost = *zbin_boost_ptr; \ |
+ short x_z = _mm_extract_epi16(x, z); \ |
+ short y_z = _mm_extract_epi16(y, z); \ |
+ int cmp = (x_z < boost) | (y_z == 0); \ |
+ zbin_boost_ptr++; \ |
+ if (cmp) \ |
+ break; \ |
+ q = _mm_insert_epi16(q, y_z, z); \ |
+ eob = i; \ |
+ zbin_boost_ptr = b->zrun_zbin_boost; \ |
+ } while (0) |
+ |
+void vp8_regular_quantize_b_sse4_1(BLOCK *b, BLOCKD *d) { |
+ char eob = 0; |
+ short *zbin_boost_ptr = b->zrun_zbin_boost; |
+ |
+ __m128i sz0, x0, sz1, x1, y0, y1, x_minus_zbin0, x_minus_zbin1, |
+ dqcoeff0, dqcoeff1; |
+ __m128i quant_shift0 = _mm_load_si128((__m128i *)(b->quant_shift)); |
+ __m128i quant_shift1 = _mm_load_si128((__m128i *)(b->quant_shift + 8)); |
+ __m128i z0 = _mm_load_si128((__m128i *)(b->coeff)); |
+ __m128i z1 = _mm_load_si128((__m128i *)(b->coeff+8)); |
+ __m128i zbin_extra = _mm_cvtsi32_si128(b->zbin_extra); |
+ __m128i zbin0 = _mm_load_si128((__m128i *)(b->zbin)); |
+ __m128i zbin1 = _mm_load_si128((__m128i *)(b->zbin + 8)); |
+ __m128i round0 = _mm_load_si128((__m128i *)(b->round)); |
+ __m128i round1 = _mm_load_si128((__m128i *)(b->round + 8)); |
+ __m128i quant0 = _mm_load_si128((__m128i *)(b->quant)); |
+ __m128i quant1 = _mm_load_si128((__m128i *)(b->quant + 8)); |
+ __m128i dequant0 = _mm_load_si128((__m128i *)(d->dequant)); |
+ __m128i dequant1 = _mm_load_si128((__m128i *)(d->dequant + 8)); |
+ __m128i qcoeff0 = _mm_setzero_si128(); |
+ __m128i qcoeff1 = _mm_setzero_si128(); |
+ |
+ /* Duplicate to all lanes. */ |
+ zbin_extra = _mm_shufflelo_epi16(zbin_extra, 0); |
+ zbin_extra = _mm_unpacklo_epi16(zbin_extra, zbin_extra); |
+ |
+ /* Sign of z: z >> 15 */ |
+ sz0 = _mm_srai_epi16(z0, 15); |
+ sz1 = _mm_srai_epi16(z1, 15); |
+ |
+ /* x = abs(z): (z ^ sz) - sz */ |
+ x0 = _mm_xor_si128(z0, sz0); |
+ x1 = _mm_xor_si128(z1, sz1); |
+ x0 = _mm_sub_epi16(x0, sz0); |
+ x1 = _mm_sub_epi16(x1, sz1); |
+ |
+ /* zbin[] + zbin_extra */ |
+ zbin0 = _mm_add_epi16(zbin0, zbin_extra); |
+ zbin1 = _mm_add_epi16(zbin1, zbin_extra); |
+ |
+ /* In C x is compared to zbin where zbin = zbin[] + boost + extra. Rebalance |
+ * the equation because boost is the only value which can change: |
+ * x - (zbin[] + extra) >= boost */ |
+ x_minus_zbin0 = _mm_sub_epi16(x0, zbin0); |
+ x_minus_zbin1 = _mm_sub_epi16(x1, zbin1); |
+ |
+ /* All the remaining calculations are valid whether they are done now with |
+ * simd or later inside the loop one at a time. */ |
+ x0 = _mm_add_epi16(x0, round0); |
+ x1 = _mm_add_epi16(x1, round1); |
+ |
+ y0 = _mm_mulhi_epi16(x0, quant0); |
+ y1 = _mm_mulhi_epi16(x1, quant1); |
+ |
+ y0 = _mm_add_epi16(y0, x0); |
+ y1 = _mm_add_epi16(y1, x1); |
+ |
+ /* Instead of shifting each value independently we convert the scaling |
+ * factor with 1 << (16 - shift) so we can use multiply/return high half. */ |
+ y0 = _mm_mulhi_epi16(y0, quant_shift0); |
+ y1 = _mm_mulhi_epi16(y1, quant_shift1); |
+ |
+ /* Return the sign: (y ^ sz) - sz */ |
+ y0 = _mm_xor_si128(y0, sz0); |
+ y1 = _mm_xor_si128(y1, sz1); |
+ y0 = _mm_sub_epi16(y0, sz0); |
+ y1 = _mm_sub_epi16(y1, sz1); |
+ |
+ /* The loop gets unrolled anyway. Avoid the vp8_default_zig_zag1d lookup. */ |
+ SELECT_EOB(1, 0, x_minus_zbin0, y0, qcoeff0); |
+ SELECT_EOB(2, 1, x_minus_zbin0, y0, qcoeff0); |
+ SELECT_EOB(3, 4, x_minus_zbin0, y0, qcoeff0); |
+ SELECT_EOB(4, 0, x_minus_zbin1, y1, qcoeff1); |
+ SELECT_EOB(5, 5, x_minus_zbin0, y0, qcoeff0); |
+ SELECT_EOB(6, 2, x_minus_zbin0, y0, qcoeff0); |
+ SELECT_EOB(7, 3, x_minus_zbin0, y0, qcoeff0); |
+ SELECT_EOB(8, 6, x_minus_zbin0, y0, qcoeff0); |
+ SELECT_EOB(9, 1, x_minus_zbin1, y1, qcoeff1); |
+ SELECT_EOB(10, 4, x_minus_zbin1, y1, qcoeff1); |
+ SELECT_EOB(11, 5, x_minus_zbin1, y1, qcoeff1); |
+ SELECT_EOB(12, 2, x_minus_zbin1, y1, qcoeff1); |
+ SELECT_EOB(13, 7, x_minus_zbin0, y0, qcoeff0); |
+ SELECT_EOB(14, 3, x_minus_zbin1, y1, qcoeff1); |
+ SELECT_EOB(15, 6, x_minus_zbin1, y1, qcoeff1); |
+ SELECT_EOB(16, 7, x_minus_zbin1, y1, qcoeff1); |
+ |
+ _mm_store_si128((__m128i *)(d->qcoeff), qcoeff0); |
+ _mm_store_si128((__m128i *)(d->qcoeff + 8), qcoeff1); |
+ |
+ dqcoeff0 = _mm_mullo_epi16(qcoeff0, dequant0); |
+ dqcoeff1 = _mm_mullo_epi16(qcoeff1, dequant1); |
+ |
+ _mm_store_si128((__m128i *)(d->dqcoeff), dqcoeff0); |
+ _mm_store_si128((__m128i *)(d->dqcoeff + 8), dqcoeff1); |
+ |
+ *d->eob = eob; |
+} |