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Diffstat (limited to 'libvpx/vp8/encoder/quantize.c')
| -rw-r--r-- | libvpx/vp8/encoder/quantize.c | 811 |
1 files changed, 811 insertions, 0 deletions
diff --git a/libvpx/vp8/encoder/quantize.c b/libvpx/vp8/encoder/quantize.c new file mode 100644 index 0000000..88fea11 --- /dev/null +++ b/libvpx/vp8/encoder/quantize.c @@ -0,0 +1,811 @@ +/* + * 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 = (char)(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 = (char)(eob + 1); +} + +#endif + +#ifdef EXACT_QUANT +void vp8_regular_quantize_b_c(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 = (char)(eob + 1); +} + +/* Perform regular quantization, with unbiased rounding and no zero bin. */ +void vp8_strict_quantize_b_c(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 = (char)(eob + 1); +} + +#else + +void vp8_regular_quantize_b_c(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]; + + 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 zrl */ + } + } + } + + *d->eob = (char)(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 = ; */ + quant_val = vp8_ac_yquant(Q); + cpi->Y1quant_fast[Q][1] = (1 << 16) / quant_val; + invert_quant(cpi->sf.improved_quant, cpi->Y1quant[Q] + 1, + cpi->Y1quant_shift[Q] + 1, quant_val); + cpi->Y1zbin[Q][1] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; + cpi->Y1round[Q][1] = (qrounding_factors[Q] * quant_val) >> 7; + cpi->common.Y1dequant[Q][1] = quant_val; + cpi->zrun_zbin_boost_y1[Q][1] = (quant_val * zbin_boost[1]) >> 7; + + quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q); + cpi->Y2quant_fast[Q][1] = (1 << 16) / quant_val; + invert_quant(cpi->sf.improved_quant, cpi->Y2quant[Q] + 1, + cpi->Y2quant_shift[Q] + 1, quant_val); + cpi->Y2zbin[Q][1] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7; + cpi->Y2round[Q][1] = (qrounding_factors_y2[Q] * quant_val) >> 7; + cpi->common.Y2dequant[Q][1] = quant_val; + cpi->zrun_zbin_boost_y2[Q][1] = (quant_val * zbin_boost[1]) >> 7; + + quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q); + cpi->UVquant_fast[Q][1] = (1 << 16) / quant_val; + invert_quant(cpi->sf.improved_quant, cpi->UVquant[Q] + 1, + cpi->UVquant_shift[Q] + 1, quant_val); + cpi->UVzbin[Q][1] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; + cpi->UVround[Q][1] = (qrounding_factors[Q] * quant_val) >> 7; + cpi->common.UVdequant[Q][1] = quant_val; + cpi->zrun_zbin_boost_uv[Q][1] = (quant_val * zbin_boost[1]) >> 7; + + for (i = 2; i < 16; i++) + { + cpi->Y1quant_fast[Q][i] = cpi->Y1quant_fast[Q][1]; + cpi->Y1quant[Q][i] = cpi->Y1quant[Q][1]; + cpi->Y1quant_shift[Q][i] = cpi->Y1quant_shift[Q][1]; + cpi->Y1zbin[Q][i] = cpi->Y1zbin[Q][1]; + cpi->Y1round[Q][i] = cpi->Y1round[Q][1]; + cpi->zrun_zbin_boost_y1[Q][i] = (cpi->common.Y1dequant[Q][1] * + zbin_boost[i]) >> 7; + + cpi->Y2quant_fast[Q][i] = cpi->Y2quant_fast[Q][1]; + cpi->Y2quant[Q][i] = cpi->Y2quant[Q][1]; + cpi->Y2quant_shift[Q][i] = cpi->Y2quant_shift[Q][1]; + cpi->Y2zbin[Q][i] = cpi->Y2zbin[Q][1]; + cpi->Y2round[Q][i] = cpi->Y2round[Q][1]; + cpi->zrun_zbin_boost_y2[Q][i] = (cpi->common.Y2dequant[Q][1] * + zbin_boost[i]) >> 7; + + cpi->UVquant_fast[Q][i] = cpi->UVquant_fast[Q][1]; + cpi->UVquant[Q][i] = cpi->UVquant[Q][1]; + cpi->UVquant_shift[Q][i] = cpi->UVquant_shift[Q][1]; + cpi->UVzbin[Q][i] = cpi->UVzbin[Q][1]; + cpi->UVround[Q][i] = cpi->UVround[Q][1]; + cpi->zrun_zbin_boost_uv[Q][i] = (cpi->common.UVdequant[Q][1] * + 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 + +#define ZBIN_EXTRA_Y \ + (( cpi->common.Y1dequant[QIndex][1] * \ + ( cpi->zbin_over_quant + \ + cpi->zbin_mode_boost + \ + x->act_zbin_adj ) ) >> 7) + +#define ZBIN_EXTRA_UV \ + (( cpi->common.UVdequant[QIndex][1] * \ + ( cpi->zbin_over_quant + \ + cpi->zbin_mode_boost + \ + x->act_zbin_adj ) ) >> 7) + +#define ZBIN_EXTRA_Y2 \ + (( cpi->common.Y2dequant[QIndex][1] * \ + ( (cpi->zbin_over_quant / 2) + \ + cpi->zbin_mode_boost + \ + x->act_zbin_adj ) ) >> 7) + +void vp8cx_mb_init_quantizer(VP8_COMP *cpi, MACROBLOCK *x, int ok_to_skip) +{ + 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]; + /* Clamp to valid range */ + QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0; + } + } + else + QIndex = cpi->common.base_qindex; + + /* This initialization should be called at least once. Use ok_to_skip to + * decide if it is ok to skip. + * Before encoding a frame, this function is always called with ok_to_skip + * =0, which means no skiping of calculations. The "last" values are + * initialized at that time. + */ + if (!ok_to_skip || QIndex != x->q_index) + { + + xd->dequant_y1_dc[0] = 1; + xd->dequant_y1[0] = cpi->common.Y1dequant[QIndex][0]; + xd->dequant_y2[0] = cpi->common.Y2dequant[QIndex][0]; + xd->dequant_uv[0] = cpi->common.UVdequant[QIndex][0]; + + for (i = 1; i < 16; i++) + { + xd->dequant_y1_dc[i] = + xd->dequant_y1[i] = cpi->common.Y1dequant[QIndex][1]; + xd->dequant_y2[i] = cpi->common.Y2dequant[QIndex][1]; + xd->dequant_uv[i] = cpi->common.UVdequant[QIndex][1]; + } +#if 1 + /*TODO: Remove dequant from BLOCKD. This is a temporary solution until + * the quantizer code uses a passed in pointer to the dequant constants. + * This will also require modifications to the x86 and neon assembly. + * */ + for (i = 0; i < 16; i++) + x->e_mbd.block[i].dequant = xd->dequant_y1; + for (i = 16; i < 24; i++) + x->e_mbd.block[i].dequant = xd->dequant_uv; + x->e_mbd.block[24].dequant = xd->dequant_y2; +#endif + + /* Y */ + zbin_extra = ZBIN_EXTRA_Y; + + 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->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_y1[QIndex]; + x->block[i].zbin_extra = (short)zbin_extra; + } + + /* UV */ + zbin_extra = ZBIN_EXTRA_UV; + + 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->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_uv[QIndex]; + x->block[i].zbin_extra = (short)zbin_extra; + } + + /* Y2 */ + zbin_extra = ZBIN_EXTRA_Y2; + + 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->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; + + cpi->last_zbin_over_quant = cpi->zbin_over_quant; + cpi->last_zbin_mode_boost = cpi->zbin_mode_boost; + x->last_act_zbin_adj = x->act_zbin_adj; + + + + } + else if(cpi->last_zbin_over_quant != cpi->zbin_over_quant + || cpi->last_zbin_mode_boost != cpi->zbin_mode_boost + || x->last_act_zbin_adj != x->act_zbin_adj) + { + /* Y */ + zbin_extra = ZBIN_EXTRA_Y; + + for (i = 0; i < 16; i++) + x->block[i].zbin_extra = (short)zbin_extra; + + /* UV */ + zbin_extra = ZBIN_EXTRA_UV; + + for (i = 16; i < 24; i++) + x->block[i].zbin_extra = (short)zbin_extra; + + /* Y2 */ + zbin_extra = ZBIN_EXTRA_Y2; + x->block[24].zbin_extra = (short)zbin_extra; + + cpi->last_zbin_over_quant = cpi->zbin_over_quant; + cpi->last_zbin_mode_boost = cpi->zbin_mode_boost; + x->last_act_zbin_adj = x->act_zbin_adj; + } +} + +void vp8_update_zbin_extra(VP8_COMP *cpi, MACROBLOCK *x) +{ + int i; + int QIndex = x->q_index; + int zbin_extra; + + /* Y */ + zbin_extra = ZBIN_EXTRA_Y; + + for (i = 0; i < 16; i++) + x->block[i].zbin_extra = (short)zbin_extra; + + /* UV */ + zbin_extra = ZBIN_EXTRA_UV; + + for (i = 16; i < 24; i++) + x->block[i].zbin_extra = (short)zbin_extra; + + /* Y2 */ + zbin_extra = ZBIN_EXTRA_Y2; + x->block[24].zbin_extra = (short)zbin_extra; +} +#undef ZBIN_EXTRA_Y +#undef ZBIN_EXTRA_UV +#undef ZBIN_EXTRA_Y2 + +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, 0); +} + + +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); + +} |