| /* |
| * Copyright (c) 2010 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 <math.h> |
| #include "vpx_mem/vpx_mem.h" |
| |
| #include "onyx_int.h" |
| #include "quantize.h" |
| #include "vp8/common/quant_common.h" |
| |
| #define EXACT_QUANT |
| |
| #ifdef EXACT_FASTQUANT |
| void vp8_fast_quantize_b_c(BLOCK *b, BLOCKD *d) |
| { |
| int i, rc, eob; |
| int zbin; |
| int x, y, z, sz; |
| short *coeff_ptr = b->coeff; |
| short *zbin_ptr = b->zbin; |
| short *round_ptr = b->round; |
| short *quant_ptr = b->quant_fast; |
| unsigned char *quant_shift_ptr = b->quant_shift; |
| short *qcoeff_ptr = d->qcoeff; |
| short *dqcoeff_ptr = d->dqcoeff; |
| short *dequant_ptr = d->dequant; |
| |
| vpx_memset(qcoeff_ptr, 0, 32); |
| vpx_memset(dqcoeff_ptr, 0, 32); |
| |
| eob = -1; |
| |
| for (i = 0; i < 16; i++) |
| { |
| rc = vp8_default_zig_zag1d[i]; |
| z = coeff_ptr[rc]; |
| zbin = zbin_ptr[rc] ; |
| |
| sz = (z >> 31); // sign of z |
| x = (z ^ sz) - sz; // x = abs(z) |
| |
| if (x >= zbin) |
| { |
| x += round_ptr[rc]; |
| y = (((x * quant_ptr[rc]) >> 16) + x) |
| >> quant_shift_ptr[rc]; // quantize (x) |
| x = (y ^ sz) - sz; // get the sign back |
| qcoeff_ptr[rc] = x; // write to destination |
| dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value |
| |
| if (y) |
| { |
| eob = i; // last nonzero coeffs |
| } |
| } |
| } |
| d->eob = eob + 1; |
| } |
| |
| #else |
| |
| void vp8_fast_quantize_b_c(BLOCK *b, BLOCKD *d) |
| { |
| int i, rc, eob; |
| int x, y, z, sz; |
| short *coeff_ptr = b->coeff; |
| short *round_ptr = b->round; |
| short *quant_ptr = b->quant_fast; |
| short *qcoeff_ptr = d->qcoeff; |
| short *dqcoeff_ptr = d->dqcoeff; |
| short *dequant_ptr = d->dequant; |
| |
| eob = -1; |
| for (i = 0; i < 16; i++) |
| { |
| rc = vp8_default_zig_zag1d[i]; |
| z = coeff_ptr[rc]; |
| |
| sz = (z >> 31); // sign of z |
| x = (z ^ sz) - sz; // x = abs(z) |
| |
| y = ((x + round_ptr[rc]) * quant_ptr[rc]) >> 16; // quantize (x) |
| x = (y ^ sz) - sz; // get the sign back |
| qcoeff_ptr[rc] = x; // write to destination |
| dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value |
| |
| if (y) |
| { |
| eob = i; // last nonzero coeffs |
| } |
| } |
| d->eob = eob + 1; |
| } |
| |
| #endif |
| |
| #ifdef EXACT_QUANT |
| void vp8_regular_quantize_b(BLOCK *b, BLOCKD *d) |
| { |
| int i, rc, eob; |
| int zbin; |
| int x, y, z, sz; |
| short *zbin_boost_ptr = b->zrun_zbin_boost; |
| short *coeff_ptr = b->coeff; |
| short *zbin_ptr = b->zbin; |
| short *round_ptr = b->round; |
| short *quant_ptr = b->quant; |
| unsigned char *quant_shift_ptr = b->quant_shift; |
| short *qcoeff_ptr = d->qcoeff; |
| short *dqcoeff_ptr = d->dqcoeff; |
| short *dequant_ptr = d->dequant; |
| short zbin_oq_value = b->zbin_extra; |
| |
| vpx_memset(qcoeff_ptr, 0, 32); |
| vpx_memset(dqcoeff_ptr, 0, 32); |
| |
| eob = -1; |
| |
| for (i = 0; i < 16; i++) |
| { |
| rc = vp8_default_zig_zag1d[i]; |
| z = coeff_ptr[rc]; |
| |
| zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value; |
| |
| zbin_boost_ptr ++; |
| sz = (z >> 31); // sign of z |
| x = (z ^ sz) - sz; // x = abs(z) |
| |
| if (x >= zbin) |
| { |
| x += round_ptr[rc]; |
| y = (((x * quant_ptr[rc]) >> 16) + x) |
| >> quant_shift_ptr[rc]; // quantize (x) |
| x = (y ^ sz) - sz; // get the sign back |
| qcoeff_ptr[rc] = x; // write to destination |
| dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value |
| |
| if (y) |
| { |
| eob = i; // last nonzero coeffs |
| zbin_boost_ptr = b->zrun_zbin_boost; // reset zero runlength |
| } |
| } |
| } |
| |
| d->eob = eob + 1; |
| } |
| |
| /* Perform regular quantization, with unbiased rounding and no zero bin. */ |
| void vp8_strict_quantize_b(BLOCK *b, BLOCKD *d) |
| { |
| int i; |
| int rc; |
| int eob; |
| int x; |
| int y; |
| int z; |
| int sz; |
| short *coeff_ptr; |
| short *quant_ptr; |
| unsigned char *quant_shift_ptr; |
| short *qcoeff_ptr; |
| short *dqcoeff_ptr; |
| short *dequant_ptr; |
| |
| coeff_ptr = b->coeff; |
| quant_ptr = b->quant; |
| quant_shift_ptr = b->quant_shift; |
| qcoeff_ptr = d->qcoeff; |
| dqcoeff_ptr = d->dqcoeff; |
| dequant_ptr = d->dequant; |
| eob = - 1; |
| vpx_memset(qcoeff_ptr, 0, 32); |
| vpx_memset(dqcoeff_ptr, 0, 32); |
| for (i = 0; i < 16; i++) |
| { |
| int dq; |
| int round; |
| |
| /*TODO: These arrays should be stored in zig-zag order.*/ |
| rc = vp8_default_zig_zag1d[i]; |
| z = coeff_ptr[rc]; |
| dq = dequant_ptr[rc]; |
| round = dq >> 1; |
| /* Sign of z. */ |
| sz = -(z < 0); |
| x = (z + sz) ^ sz; |
| x += round; |
| if (x >= dq) |
| { |
| /* Quantize x. */ |
| y = (((x * quant_ptr[rc]) >> 16) + x) >> quant_shift_ptr[rc]; |
| /* Put the sign back. */ |
| x = (y + sz) ^ sz; |
| /* Save the coefficient and its dequantized value. */ |
| qcoeff_ptr[rc] = x; |
| dqcoeff_ptr[rc] = x * dq; |
| /* Remember the last non-zero coefficient. */ |
| if (y) |
| eob = i; |
| } |
| } |
| |
| d->eob = eob + 1; |
| } |
| |
| #else |
| |
| void vp8_regular_quantize_b(BLOCK *b, BLOCKD *d) |
| { |
| int i, rc, eob; |
| int zbin; |
| int x, y, z, sz; |
| short *zbin_boost_ptr = b->zrun_zbin_boost; |
| short *coeff_ptr = b->coeff; |
| short *zbin_ptr = b->zbin; |
| short *round_ptr = b->round; |
| short *quant_ptr = b->quant; |
| short *qcoeff_ptr = d->qcoeff; |
| short *dqcoeff_ptr = d->dqcoeff; |
| short *dequant_ptr = d->dequant; |
| short zbin_oq_value = b->zbin_extra; |
| |
| vpx_memset(qcoeff_ptr, 0, 32); |
| vpx_memset(dqcoeff_ptr, 0, 32); |
| |
| eob = -1; |
| |
| for (i = 0; i < 16; i++) |
| { |
| rc = vp8_default_zig_zag1d[i]; |
| z = coeff_ptr[rc]; |
| |
| //if ( i == 0 ) |
| // zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value/2; |
| //else |
| zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value; |
| |
| zbin_boost_ptr ++; |
| sz = (z >> 31); // sign of z |
| x = (z ^ sz) - sz; // x = abs(z) |
| |
| if (x >= zbin) |
| { |
| y = ((x + round_ptr[rc]) * quant_ptr[rc]) >> 16; // quantize (x) |
| x = (y ^ sz) - sz; // get the sign back |
| qcoeff_ptr[rc] = x; // write to destination |
| dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value |
| |
| if (y) |
| { |
| eob = i; // last nonzero coeffs |
| zbin_boost_ptr = &b->zrun_zbin_boost[0]; // reset zero runlength |
| } |
| } |
| } |
| |
| d->eob = eob + 1; |
| } |
| |
| #endif |
| |
| void vp8_quantize_mby_c(MACROBLOCK *x) |
| { |
| int i; |
| int has_2nd_order = (x->e_mbd.mode_info_context->mbmi.mode != B_PRED |
| && x->e_mbd.mode_info_context->mbmi.mode != SPLITMV); |
| |
| for (i = 0; i < 16; i++) |
| x->quantize_b(&x->block[i], &x->e_mbd.block[i]); |
| |
| if(has_2nd_order) |
| x->quantize_b(&x->block[24], &x->e_mbd.block[24]); |
| } |
| |
| void vp8_quantize_mb_c(MACROBLOCK *x) |
| { |
| int i; |
| int has_2nd_order=(x->e_mbd.mode_info_context->mbmi.mode != B_PRED |
| && x->e_mbd.mode_info_context->mbmi.mode != SPLITMV); |
| |
| for (i = 0; i < 24+has_2nd_order; i++) |
| x->quantize_b(&x->block[i], &x->e_mbd.block[i]); |
| } |
| |
| |
| void vp8_quantize_mbuv_c(MACROBLOCK *x) |
| { |
| int i; |
| |
| for (i = 16; i < 24; i++) |
| x->quantize_b(&x->block[i], &x->e_mbd.block[i]); |
| } |
| |
| /* quantize_b_pair function pointer in MACROBLOCK structure is set to one of |
| * these two C functions if corresponding optimized routine is not available. |
| * NEON optimized version implements currently the fast quantization for pair |
| * of blocks. */ |
| void vp8_regular_quantize_b_pair(BLOCK *b1, BLOCK *b2, BLOCKD *d1, BLOCKD *d2) |
| { |
| vp8_regular_quantize_b(b1, d1); |
| vp8_regular_quantize_b(b2, d2); |
| } |
| |
| void vp8_fast_quantize_b_pair_c(BLOCK *b1, BLOCK *b2, BLOCKD *d1, BLOCKD *d2) |
| { |
| vp8_fast_quantize_b_c(b1, d1); |
| vp8_fast_quantize_b_c(b2, d2); |
| } |
| |
| |
| static const int qrounding_factors[129] = |
| { |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48 |
| }; |
| |
| |
| static const int qzbin_factors[129] = |
| { |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80 |
| }; |
| |
| |
| static const int qrounding_factors_y2[129] = |
| { |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48, 48, 48, 48, 48, 48, 48, 48, |
| 48 |
| }; |
| |
| |
| static const int qzbin_factors_y2[129] = |
| { |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 84, 84, 84, 84, 84, 84, 84, 84, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80, 80, 80, 80, 80, 80, 80, 80, |
| 80 |
| }; |
| |
| |
| #define EXACT_QUANT |
| #ifdef EXACT_QUANT |
| static void invert_quant(int improved_quant, short *quant, |
| unsigned char *shift, short d) |
| { |
| if(improved_quant) |
| { |
| unsigned t; |
| int l; |
| t = d; |
| for(l = 0; t > 1; l++) |
| t>>=1; |
| t = 1 + (1<<(16+l))/d; |
| *quant = (short)(t - (1<<16)); |
| *shift = l; |
| } |
| else |
| { |
| *quant = (1 << 16) / d; |
| *shift = 0; |
| } |
| } |
| |
| |
| void vp8cx_init_quantizer(VP8_COMP *cpi) |
| { |
| int i; |
| int quant_val; |
| int Q; |
| |
| int zbin_boost[16] = {0, 0, 8, 10, 12, 14, 16, 20, 24, 28, 32, 36, 40, 44, 44, 44}; |
| |
| for (Q = 0; Q < QINDEX_RANGE; Q++) |
| { |
| // dc values |
| quant_val = vp8_dc_quant(Q, cpi->common.y1dc_delta_q); |
| cpi->Y1quant_fast[Q][0] = (1 << 16) / quant_val; |
| invert_quant(cpi->sf.improved_quant, cpi->Y1quant[Q] + 0, |
| cpi->Y1quant_shift[Q] + 0, quant_val); |
| cpi->Y1zbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; |
| cpi->Y1round[Q][0] = (qrounding_factors[Q] * quant_val) >> 7; |
| cpi->common.Y1dequant[Q][0] = quant_val; |
| cpi->zrun_zbin_boost_y1[Q][0] = (quant_val * zbin_boost[0]) >> 7; |
| |
| quant_val = vp8_dc2quant(Q, cpi->common.y2dc_delta_q); |
| cpi->Y2quant_fast[Q][0] = (1 << 16) / quant_val; |
| invert_quant(cpi->sf.improved_quant, cpi->Y2quant[Q] + 0, |
| cpi->Y2quant_shift[Q] + 0, quant_val); |
| cpi->Y2zbin[Q][0] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7; |
| cpi->Y2round[Q][0] = (qrounding_factors_y2[Q] * quant_val) >> 7; |
| cpi->common.Y2dequant[Q][0] = quant_val; |
| cpi->zrun_zbin_boost_y2[Q][0] = (quant_val * zbin_boost[0]) >> 7; |
| |
| quant_val = vp8_dc_uv_quant(Q, cpi->common.uvdc_delta_q); |
| cpi->UVquant_fast[Q][0] = (1 << 16) / quant_val; |
| invert_quant(cpi->sf.improved_quant, cpi->UVquant[Q] + 0, |
| cpi->UVquant_shift[Q] + 0, quant_val); |
| cpi->UVzbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;; |
| cpi->UVround[Q][0] = (qrounding_factors[Q] * quant_val) >> 7; |
| cpi->common.UVdequant[Q][0] = quant_val; |
| cpi->zrun_zbin_boost_uv[Q][0] = (quant_val * zbin_boost[0]) >> 7; |
| |
| // all the ac values = ; |
| for (i = 1; i < 16; i++) |
| { |
| int rc = vp8_default_zig_zag1d[i]; |
| |
| quant_val = vp8_ac_yquant(Q); |
| cpi->Y1quant_fast[Q][rc] = (1 << 16) / quant_val; |
| invert_quant(cpi->sf.improved_quant, cpi->Y1quant[Q] + rc, |
| cpi->Y1quant_shift[Q] + rc, quant_val); |
| cpi->Y1zbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; |
| cpi->Y1round[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7; |
| cpi->common.Y1dequant[Q][rc] = quant_val; |
| cpi->zrun_zbin_boost_y1[Q][i] = (quant_val * zbin_boost[i]) >> 7; |
| |
| quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q); |
| cpi->Y2quant_fast[Q][rc] = (1 << 16) / quant_val; |
| invert_quant(cpi->sf.improved_quant, cpi->Y2quant[Q] + rc, |
| cpi->Y2quant_shift[Q] + rc, quant_val); |
| cpi->Y2zbin[Q][rc] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7; |
| cpi->Y2round[Q][rc] = (qrounding_factors_y2[Q] * quant_val) >> 7; |
| cpi->common.Y2dequant[Q][rc] = quant_val; |
| cpi->zrun_zbin_boost_y2[Q][i] = (quant_val * zbin_boost[i]) >> 7; |
| |
| quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q); |
| cpi->UVquant_fast[Q][rc] = (1 << 16) / quant_val; |
| invert_quant(cpi->sf.improved_quant, cpi->UVquant[Q] + rc, |
| cpi->UVquant_shift[Q] + rc, quant_val); |
| cpi->UVzbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; |
| cpi->UVround[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7; |
| cpi->common.UVdequant[Q][rc] = quant_val; |
| cpi->zrun_zbin_boost_uv[Q][i] = (quant_val * zbin_boost[i]) >> 7; |
| } |
| } |
| } |
| #else |
| void vp8cx_init_quantizer(VP8_COMP *cpi) |
| { |
| int i; |
| int quant_val; |
| int Q; |
| |
| int zbin_boost[16] = {0, 0, 8, 10, 12, 14, 16, 20, 24, 28, 32, 36, 40, 44, 44, 44}; |
| |
| for (Q = 0; Q < QINDEX_RANGE; Q++) |
| { |
| // dc values |
| quant_val = vp8_dc_quant(Q, cpi->common.y1dc_delta_q); |
| cpi->Y1quant[Q][0] = (1 << 16) / quant_val; |
| cpi->Y1zbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; |
| cpi->Y1round[Q][0] = (qrounding_factors[Q] * quant_val) >> 7; |
| cpi->common.Y1dequant[Q][0] = quant_val; |
| cpi->zrun_zbin_boost_y1[Q][0] = (quant_val * zbin_boost[0]) >> 7; |
| |
| quant_val = vp8_dc2quant(Q, cpi->common.y2dc_delta_q); |
| cpi->Y2quant[Q][0] = (1 << 16) / quant_val; |
| cpi->Y2zbin[Q][0] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7; |
| cpi->Y2round[Q][0] = (qrounding_factors_y2[Q] * quant_val) >> 7; |
| cpi->common.Y2dequant[Q][0] = quant_val; |
| cpi->zrun_zbin_boost_y2[Q][0] = (quant_val * zbin_boost[0]) >> 7; |
| |
| quant_val = vp8_dc_uv_quant(Q, cpi->common.uvdc_delta_q); |
| cpi->UVquant[Q][0] = (1 << 16) / quant_val; |
| cpi->UVzbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;; |
| cpi->UVround[Q][0] = (qrounding_factors[Q] * quant_val) >> 7; |
| cpi->common.UVdequant[Q][0] = quant_val; |
| cpi->zrun_zbin_boost_uv[Q][0] = (quant_val * zbin_boost[0]) >> 7; |
| |
| // all the ac values = ; |
| for (i = 1; i < 16; i++) |
| { |
| int rc = vp8_default_zig_zag1d[i]; |
| |
| quant_val = vp8_ac_yquant(Q); |
| cpi->Y1quant[Q][rc] = (1 << 16) / quant_val; |
| cpi->Y1zbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; |
| cpi->Y1round[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7; |
| cpi->common.Y1dequant[Q][rc] = quant_val; |
| cpi->zrun_zbin_boost_y1[Q][i] = (quant_val * zbin_boost[i]) >> 7; |
| |
| quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q); |
| cpi->Y2quant[Q][rc] = (1 << 16) / quant_val; |
| cpi->Y2zbin[Q][rc] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7; |
| cpi->Y2round[Q][rc] = (qrounding_factors_y2[Q] * quant_val) >> 7; |
| cpi->common.Y2dequant[Q][rc] = quant_val; |
| cpi->zrun_zbin_boost_y2[Q][i] = (quant_val * zbin_boost[i]) >> 7; |
| |
| quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q); |
| cpi->UVquant[Q][rc] = (1 << 16) / quant_val; |
| cpi->UVzbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; |
| cpi->UVround[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7; |
| cpi->common.UVdequant[Q][rc] = quant_val; |
| cpi->zrun_zbin_boost_uv[Q][i] = (quant_val * zbin_boost[i]) >> 7; |
| } |
| } |
| } |
| #endif |
| |
| |
| void vp8cx_mb_init_quantizer(VP8_COMP *cpi, MACROBLOCK *x) |
| { |
| int i; |
| int QIndex; |
| MACROBLOCKD *xd = &x->e_mbd; |
| int zbin_extra; |
| |
| // Select the baseline MB Q index. |
| if (xd->segmentation_enabled) |
| { |
| // Abs Value |
| if (xd->mb_segement_abs_delta == SEGMENT_ABSDATA) |
| |
| QIndex = xd->segment_feature_data[MB_LVL_ALT_Q][xd->mode_info_context->mbmi.segment_id]; |
| // Delta Value |
| else |
| { |
| QIndex = cpi->common.base_qindex + xd->segment_feature_data[MB_LVL_ALT_Q][xd->mode_info_context->mbmi.segment_id]; |
| QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0; // Clamp to valid range |
| } |
| } |
| else |
| QIndex = cpi->common.base_qindex; |
| |
| // Y |
| zbin_extra = ( cpi->common.Y1dequant[QIndex][1] * |
| ( cpi->zbin_over_quant + |
| cpi->zbin_mode_boost + |
| x->act_zbin_adj ) ) >> 7; |
| |
| for (i = 0; i < 16; i++) |
| { |
| x->block[i].quant = cpi->Y1quant[QIndex]; |
| x->block[i].quant_fast = cpi->Y1quant_fast[QIndex]; |
| x->block[i].quant_shift = cpi->Y1quant_shift[QIndex]; |
| x->block[i].zbin = cpi->Y1zbin[QIndex]; |
| x->block[i].round = cpi->Y1round[QIndex]; |
| x->e_mbd.block[i].dequant = cpi->common.Y1dequant[QIndex]; |
| x->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_y1[QIndex]; |
| x->block[i].zbin_extra = (short)zbin_extra; |
| } |
| |
| // UV |
| zbin_extra = ( cpi->common.UVdequant[QIndex][1] * |
| ( cpi->zbin_over_quant + |
| cpi->zbin_mode_boost + |
| x->act_zbin_adj ) ) >> 7; |
| |
| for (i = 16; i < 24; i++) |
| { |
| x->block[i].quant = cpi->UVquant[QIndex]; |
| x->block[i].quant_fast = cpi->UVquant_fast[QIndex]; |
| x->block[i].quant_shift = cpi->UVquant_shift[QIndex]; |
| x->block[i].zbin = cpi->UVzbin[QIndex]; |
| x->block[i].round = cpi->UVround[QIndex]; |
| x->e_mbd.block[i].dequant = cpi->common.UVdequant[QIndex]; |
| x->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_uv[QIndex]; |
| x->block[i].zbin_extra = (short)zbin_extra; |
| } |
| |
| // Y2 |
| zbin_extra = ( cpi->common.Y2dequant[QIndex][1] * |
| ( (cpi->zbin_over_quant / 2) + |
| cpi->zbin_mode_boost + |
| x->act_zbin_adj ) ) >> 7; |
| |
| x->block[24].quant_fast = cpi->Y2quant_fast[QIndex]; |
| x->block[24].quant = cpi->Y2quant[QIndex]; |
| x->block[24].quant_shift = cpi->Y2quant_shift[QIndex]; |
| x->block[24].zbin = cpi->Y2zbin[QIndex]; |
| x->block[24].round = cpi->Y2round[QIndex]; |
| x->e_mbd.block[24].dequant = cpi->common.Y2dequant[QIndex]; |
| x->block[24].zrun_zbin_boost = cpi->zrun_zbin_boost_y2[QIndex]; |
| x->block[24].zbin_extra = (short)zbin_extra; |
| |
| /* save this macroblock QIndex for vp8_update_zbin_extra() */ |
| x->q_index = QIndex; |
| } |
| |
| |
| void vp8_update_zbin_extra(VP8_COMP *cpi, MACROBLOCK *x) |
| { |
| int i; |
| int QIndex = x->q_index; |
| int zbin_extra; |
| |
| // Y |
| zbin_extra = ( cpi->common.Y1dequant[QIndex][1] * |
| ( cpi->zbin_over_quant + |
| cpi->zbin_mode_boost + |
| x->act_zbin_adj ) ) >> 7; |
| for (i = 0; i < 16; i++) |
| { |
| x->block[i].zbin_extra = (short)zbin_extra; |
| } |
| |
| // UV |
| zbin_extra = ( cpi->common.UVdequant[QIndex][1] * |
| ( cpi->zbin_over_quant + |
| cpi->zbin_mode_boost + |
| x->act_zbin_adj ) ) >> 7; |
| |
| for (i = 16; i < 24; i++) |
| { |
| x->block[i].zbin_extra = (short)zbin_extra; |
| } |
| |
| // Y2 |
| zbin_extra = ( cpi->common.Y2dequant[QIndex][1] * |
| ( (cpi->zbin_over_quant / 2) + |
| cpi->zbin_mode_boost + |
| x->act_zbin_adj ) ) >> 7; |
| |
| x->block[24].zbin_extra = (short)zbin_extra; |
| } |
| |
| |
| void vp8cx_frame_init_quantizer(VP8_COMP *cpi) |
| { |
| // Clear Zbin mode boost for default case |
| cpi->zbin_mode_boost = 0; |
| |
| // MB level quantizer setup |
| vp8cx_mb_init_quantizer(cpi, &cpi->mb); |
| } |
| |
| |
| void vp8_set_quantizer(struct VP8_COMP *cpi, int Q) |
| { |
| VP8_COMMON *cm = &cpi->common; |
| MACROBLOCKD *mbd = &cpi->mb.e_mbd; |
| int update = 0; |
| int new_delta_q; |
| cm->base_qindex = Q; |
| |
| /* if any of the delta_q values are changing update flag has to be set */ |
| /* currently only y2dc_delta_q may change */ |
| |
| cm->y1dc_delta_q = 0; |
| cm->y2ac_delta_q = 0; |
| cm->uvdc_delta_q = 0; |
| cm->uvac_delta_q = 0; |
| |
| if (Q < 4) |
| { |
| new_delta_q = 4-Q; |
| } |
| else |
| new_delta_q = 0; |
| |
| update |= cm->y2dc_delta_q != new_delta_q; |
| cm->y2dc_delta_q = new_delta_q; |
| |
| |
| // Set Segment specific quatizers |
| mbd->segment_feature_data[MB_LVL_ALT_Q][0] = cpi->segment_feature_data[MB_LVL_ALT_Q][0]; |
| mbd->segment_feature_data[MB_LVL_ALT_Q][1] = cpi->segment_feature_data[MB_LVL_ALT_Q][1]; |
| mbd->segment_feature_data[MB_LVL_ALT_Q][2] = cpi->segment_feature_data[MB_LVL_ALT_Q][2]; |
| mbd->segment_feature_data[MB_LVL_ALT_Q][3] = cpi->segment_feature_data[MB_LVL_ALT_Q][3]; |
| |
| /* quantizer has to be reinitialized for any delta_q changes */ |
| if(update) |
| vp8cx_init_quantizer(cpi); |
| |
| } |
| |
