diff options
Diffstat (limited to 'vp8/encoder/x86/quantize_sse2_intrinsics.c')
| -rw-r--r-- | vp8/encoder/x86/quantize_sse2_intrinsics.c | 138 |
1 files changed, 132 insertions, 6 deletions
diff --git a/vp8/encoder/x86/quantize_sse2_intrinsics.c b/vp8/encoder/x86/quantize_sse2_intrinsics.c index 55d57ad62..f495bf287 100644 --- a/vp8/encoder/x86/quantize_sse2_intrinsics.c +++ b/vp8/encoder/x86/quantize_sse2_intrinsics.c @@ -9,13 +9,139 @@ */ -#include "vp8/common/blockd.h" -#include "vp8/common/entropy.h" +#include "vpx_config.h" +#include "vp8_rtcd.h" +#include "vpx_ports/x86.h" +#include "vpx_mem/vpx_mem.h" #include "vp8/encoder/block.h" - -#include <mmintrin.h> //MMX -#include <xmmintrin.h> //SSE -#include <emmintrin.h> //SSE2 +#include "vp8/common/entropy.h" /* vp8_default_inv_zig_zag */ + +#include <mmintrin.h> /* MMX */ +#include <xmmintrin.h> /* SSE */ +#include <emmintrin.h> /* SSE2 */ + +#define SELECT_EOB(i, z) \ + do { \ + short boost = *zbin_boost_ptr; \ + int cmp = (x[z] < boost) | (y[z] == 0); \ + zbin_boost_ptr++; \ + if (cmp) \ + goto select_eob_end_##i; \ + qcoeff_ptr[z] = y[z]; \ + eob = i; \ + zbin_boost_ptr = b->zrun_zbin_boost; \ + select_eob_end_##i:; \ + } while (0) + +void vp8_regular_quantize_b_sse2(BLOCK *b, BLOCKD *d) +{ + char eob = 0; + short *zbin_boost_ptr = b->zrun_zbin_boost; + short *qcoeff_ptr = d->qcoeff; + DECLARE_ALIGNED_ARRAY(16, short, x, 16); + DECLARE_ALIGNED_ARRAY(16, short, y, 16); + + __m128i sz0, x0, sz1, x1, y0, y1, x_minus_zbin0, x_minus_zbin1; + __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)); + + vpx_memset(qcoeff_ptr, 0, 32); + + /* 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); + + _mm_store_si128((__m128i *)(x), x_minus_zbin0); + _mm_store_si128((__m128i *)(x + 8), x_minus_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); + + _mm_store_si128((__m128i *)(y), y0); + _mm_store_si128((__m128i *)(y + 8), y1); + + zbin_boost_ptr = b->zrun_zbin_boost; + + /* The loop gets unrolled anyway. Avoid the vp8_default_zig_zag1d lookup. */ + SELECT_EOB(1, 0); + SELECT_EOB(2, 1); + SELECT_EOB(3, 4); + SELECT_EOB(4, 8); + SELECT_EOB(5, 5); + SELECT_EOB(6, 2); + SELECT_EOB(7, 3); + SELECT_EOB(8, 6); + SELECT_EOB(9, 9); + SELECT_EOB(10, 12); + SELECT_EOB(11, 13); + SELECT_EOB(12, 10); + SELECT_EOB(13, 7); + SELECT_EOB(14, 11); + SELECT_EOB(15, 14); + SELECT_EOB(16, 15); + + y0 = _mm_load_si128((__m128i *)(d->qcoeff)); + y1 = _mm_load_si128((__m128i *)(d->qcoeff + 8)); + + /* dqcoeff = qcoeff * dequant */ + y0 = _mm_mullo_epi16(y0, dequant0); + y1 = _mm_mullo_epi16(y1, dequant1); + + _mm_store_si128((__m128i *)(d->dqcoeff), y0); + _mm_store_si128((__m128i *)(d->dqcoeff + 8), y1); + + *d->eob = eob; +} void vp8_fast_quantize_b_sse2(BLOCK *b, BLOCKD *d) { |