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Tero Rintaluoma authored
Adds following targets to configure script to support RVCT compilation without operating system support (for Profiler or bare metal images). - armv5te-none-rvct - armv6-none-rvct - armv7-none-rvct To strip OS specific parts from the code "os_support"-config was added to script and CONFIG_OS_SUPPORT flag is used in the code to exclude OS specific parts such as OS specific includes and function calls for timers and threads etc. This was done to enable RVCT compilation for profiling purposes or running the image on bare metal target with Lauterbach. Removed separate AREA directives for READONLY data in armv6 and neon assembly files to fix the RVCT compilation. Otherwise "ldr <reg>, =label" syntax would have been needed to prevent linker errors. This syntax is not supported by older gnu assemblers. Change-Id: I14f4c68529e8c27397502fbc3010a54e505ddb43
11a222f5
vp9_quantize.c 11.59 KiB
/* * 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 "vp9/encoder/vp9_onyx_int.h"#include "vp9/encoder/vp9_quantize.h"#include "vp9/common/vp9_quant_common.h"#include "vp9/common/vp9_seg_common.h"#ifdef ENC_DEBUGextern int enc_debug;#endifvoid vp9_quantize_b_c(int16_t *coeff_ptr, intptr_t n_coeffs, int skip_block, int16_t *zbin_ptr, int16_t *round_ptr, int16_t *quant_ptr, int16_t *quant_shift_ptr, int16_t *qcoeff_ptr, int16_t *dqcoeff_ptr, int16_t *dequant_ptr, int zbin_oq_value, uint16_t *eob_ptr, const int16_t *scan, const int16_t *iscan) { int i, rc, eob; int zbins[2], nzbins[2], zbin; int x, y, z, sz; int zero_flag = n_coeffs; vpx_memset(qcoeff_ptr, 0, n_coeffs*sizeof(int16_t)); vpx_memset(dqcoeff_ptr, 0, n_coeffs*sizeof(int16_t)); eob = -1; // Base ZBIN zbins[0] = zbin_ptr[0] + zbin_oq_value; zbins[1] = zbin_ptr[1] + zbin_oq_value; nzbins[0] = zbins[0] * -1; nzbins[1] = zbins[1] * -1; if (!skip_block) { // Pre-scan pass for (i = n_coeffs - 1; i >= 0; i--) { rc = scan[i]; z = coeff_ptr[rc]; if (z < zbins[rc != 0] && z > nzbins[rc != 0]) { zero_flag--; } else { break; } } // Quantization pass: All coefficients with index >= zero_flag are // skippable. Note: zero_flag can be zero. for (i = 0; i < zero_flag; i++) { rc = scan[i]; z = coeff_ptr[rc]; zbin = (zbins[rc != 0]); sz = (z >> 31); // sign of z x = (z ^ sz) - sz; if (x >= zbin) {7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
x += (round_ptr[rc != 0]);
x = clamp(x, INT16_MIN, INT16_MAX);
y = (((int)(((int)(x * quant_ptr[rc != 0]) >> 16) + x)) *
quant_shift_ptr[rc != 0]) >> 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 != 0]; // dequantized value
if (y) {
eob = i; // last nonzero coeffs
}
}
}
}
*eob_ptr = eob + 1;
}
void vp9_quantize_b_32x32_c(int16_t *coeff_ptr, intptr_t n_coeffs,
int skip_block,
int16_t *zbin_ptr, int16_t *round_ptr,
int16_t *quant_ptr, int16_t *quant_shift_ptr,
int16_t *qcoeff_ptr, int16_t *dqcoeff_ptr,
int16_t *dequant_ptr, int zbin_oq_value,
uint16_t *eob_ptr, const int16_t *scan,
const int16_t *iscan) {
int i, rc, eob;
int zbins[2], nzbins[2];
int x, y, z, sz;
int idx = 0;
int idx_arr[1024];
vpx_memset(qcoeff_ptr, 0, n_coeffs*sizeof(int16_t));
vpx_memset(dqcoeff_ptr, 0, n_coeffs*sizeof(int16_t));
eob = -1;
// Base ZBIN
zbins[0] = ROUND_POWER_OF_TWO(zbin_ptr[0] + zbin_oq_value, 1);
zbins[1] = ROUND_POWER_OF_TWO(zbin_ptr[1] + zbin_oq_value, 1);
nzbins[0] = zbins[0] * -1;
nzbins[1] = zbins[1] * -1;
if (!skip_block) {
// Pre-scan pass
for (i = 0; i < n_coeffs; i++) {
rc = scan[i];
z = coeff_ptr[rc];
// If the coefficient is out of the base ZBIN range, keep it for
// quantization.
if (z >= zbins[rc != 0] || z <= nzbins[rc != 0])
idx_arr[idx++] = i;
}
// Quantization pass: only process the coefficients selected in
// pre-scan pass. Note: idx can be zero.
for (i = 0; i < idx; i++) {
rc = scan[idx_arr[i]];
z = coeff_ptr[rc];
sz = (z >> 31); // sign of z
x = (z ^ sz) - sz; // x = abs(z)
x += ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1);
x = clamp(x, INT16_MIN, INT16_MAX);
y = ((((x * quant_ptr[rc != 0]) >> 16) + x) *
quant_shift_ptr[rc != 0]) >> 15; // quantize (x)
x = (y ^ sz) - sz; // get the sign back
qcoeff_ptr[rc] = x; // write to destination
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dqcoeff_ptr[rc] = x * dequant_ptr[rc != 0] / 2; // dequantized value
if (y)
eob = idx_arr[i]; // last nonzero coeffs
}
}
*eob_ptr = eob + 1;
}
struct plane_block_idx {
int plane;
int block;
};
// TODO(jkoleszar): returning a struct so it can be used in a const context,
// expect to refactor this further later.
static INLINE struct plane_block_idx plane_block_idx(int y_blocks,
int b_idx) {
const int v_offset = y_blocks * 5 / 4;
struct plane_block_idx res;
if (b_idx < y_blocks) {
res.plane = 0;
res.block = b_idx;
} else if (b_idx < v_offset) {
res.plane = 1;
res.block = b_idx - y_blocks;
} else {
assert(b_idx < y_blocks * 3 / 2);
res.plane = 2;
res.block = b_idx - v_offset;
}
return res;
}
void vp9_regular_quantize_b_4x4(MACROBLOCK *mb, int b_idx, TX_TYPE tx_type,
int y_blocks) {
MACROBLOCKD *const xd = &mb->e_mbd;
const struct plane_block_idx pb_idx = plane_block_idx(y_blocks, b_idx);
const int16_t *scan = get_scan_4x4(tx_type);
const int16_t *iscan = get_iscan_4x4(tx_type);
vp9_quantize_b(BLOCK_OFFSET(mb->plane[pb_idx.plane].coeff, pb_idx.block),
16, mb->skip_block,
mb->plane[pb_idx.plane].zbin,
mb->plane[pb_idx.plane].round,
mb->plane[pb_idx.plane].quant,
mb->plane[pb_idx.plane].quant_shift,
BLOCK_OFFSET(xd->plane[pb_idx.plane].qcoeff, pb_idx.block),
BLOCK_OFFSET(xd->plane[pb_idx.plane].dqcoeff, pb_idx.block),
xd->plane[pb_idx.plane].dequant,
mb->plane[pb_idx.plane].zbin_extra,
&xd->plane[pb_idx.plane].eobs[pb_idx.block],
scan, iscan);
}
static void invert_quant(int16_t *quant, int16_t *shift, int d) {
unsigned t;
int l;
t = d;
for (l = 0; t > 1; l++)
t >>= 1;
t = 1 + (1 << (16 + l)) / d;
*quant = (int16_t)(t - (1 << 16));
*shift = 1 << (16 - l);
}
void vp9_init_quantizer(VP9_COMP *cpi) {
int i, q;
VP9_COMMON *const cm = &cpi->common;
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for (q = 0; q < QINDEX_RANGE; q++) {
const int qzbin_factor = q == 0 ? 64 : (vp9_dc_quant(q, 0) < 148 ? 84 : 80);
const int qrounding_factor = q == 0 ? 64 : 48;
// y
for (i = 0; i < 2; ++i) {
const int quant = i == 0 ? vp9_dc_quant(q, cm->y_dc_delta_q)
: vp9_ac_quant(q, 0);
invert_quant(&cpi->y_quant[q][i], &cpi->y_quant_shift[q][i], quant);
cpi->y_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant, 7);
cpi->y_round[q][i] = (qrounding_factor * quant) >> 7;
cm->y_dequant[q][i] = quant;
}
// uv
for (i = 0; i < 2; ++i) {
const int quant = i == 0 ? vp9_dc_quant(q, cm->uv_dc_delta_q)
: vp9_ac_quant(q, cm->uv_ac_delta_q);
invert_quant(&cpi->uv_quant[q][i], &cpi->uv_quant_shift[q][i], quant);
cpi->uv_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant, 7);
cpi->uv_round[q][i] = (qrounding_factor * quant) >> 7;
cm->uv_dequant[q][i] = quant;
}
#if CONFIG_ALPHA
// alpha
for (i = 0; i < 2; ++i) {
const int quant = i == 0 ? vp9_dc_quant(q, cm->a_dc_delta_q)
: vp9_ac_quant(q, cm->a_ac_delta_q);
invert_quant(&cpi->a_quant[q][i], &cpi->a_quant_shift[q][i], quant);
cpi->a_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant, 7);
cpi->a_round[q][i] = (qrounding_factor * quant) >> 7;
cm->a_dequant[q][i] = quant;
}
#endif
for (i = 2; i < 8; i++) {
cpi->y_quant[q][i] = cpi->y_quant[q][1];
cpi->y_quant_shift[q][i] = cpi->y_quant_shift[q][1];
cpi->y_zbin[q][i] = cpi->y_zbin[q][1];
cpi->y_round[q][i] = cpi->y_round[q][1];
cm->y_dequant[q][i] = cm->y_dequant[q][1];
cpi->uv_quant[q][i] = cpi->uv_quant[q][1];
cpi->uv_quant_shift[q][i] = cpi->uv_quant_shift[q][1];
cpi->uv_zbin[q][i] = cpi->uv_zbin[q][1];
cpi->uv_round[q][i] = cpi->uv_round[q][1];
cm->uv_dequant[q][i] = cm->uv_dequant[q][1];
#if CONFIG_ALPHA
cpi->a_quant[q][i] = cpi->a_quant[q][1];
cpi->a_quant_shift[q][i] = cpi->a_quant_shift[q][1];
cpi->a_zbin[q][i] = cpi->a_zbin[q][1];
cpi->a_round[q][i] = cpi->a_round[q][1];
cm->a_dequant[q][i] = cm->a_dequant[q][1];
#endif
}
}
}
void vp9_mb_init_quantizer(VP9_COMP *cpi, MACROBLOCK *x) {
int i;
MACROBLOCKD *xd = &x->e_mbd;
int zbin_extra;
int segment_id = xd->this_mi->mbmi.segment_id;
const int qindex = vp9_get_qindex(&cpi->common.seg, segment_id,
cpi->common.base_qindex);
// Y
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zbin_extra = (cpi->common.y_dequant[qindex][1] *
(cpi->zbin_mode_boost + x->act_zbin_adj)) >> 7;
x->plane[0].quant = cpi->y_quant[qindex];
x->plane[0].quant_shift = cpi->y_quant_shift[qindex];
x->plane[0].zbin = cpi->y_zbin[qindex];
x->plane[0].round = cpi->y_round[qindex];
x->plane[0].zbin_extra = (int16_t)zbin_extra;
x->e_mbd.plane[0].dequant = cpi->common.y_dequant[qindex];
// UV
zbin_extra = (cpi->common.uv_dequant[qindex][1] *
(cpi->zbin_mode_boost + x->act_zbin_adj)) >> 7;
for (i = 1; i < 3; i++) {
x->plane[i].quant = cpi->uv_quant[qindex];
x->plane[i].quant_shift = cpi->uv_quant_shift[qindex];
x->plane[i].zbin = cpi->uv_zbin[qindex];
x->plane[i].round = cpi->uv_round[qindex];
x->plane[i].zbin_extra = (int16_t)zbin_extra;
x->e_mbd.plane[i].dequant = cpi->common.uv_dequant[qindex];
}
#if CONFIG_ALPHA
x->plane[3].quant = cpi->a_quant[qindex];
x->plane[3].quant_shift = cpi->a_quant_shift[qindex];
x->plane[3].zbin = cpi->a_zbin[qindex];
x->plane[3].round = cpi->a_round[qindex];
x->plane[3].zbin_extra = (int16_t)zbin_extra;
x->e_mbd.plane[3].dequant = cpi->common.a_dequant[qindex];
#endif
x->skip_block = vp9_segfeature_active(&cpi->common.seg, segment_id,
SEG_LVL_SKIP);
/* save this macroblock QIndex for vp9_update_zbin_extra() */
x->e_mbd.q_index = qindex;
}
void vp9_update_zbin_extra(VP9_COMP *cpi, MACROBLOCK *x) {
const int qindex = x->e_mbd.q_index;
const int y_zbin_extra = (cpi->common.y_dequant[qindex][1] *
(cpi->zbin_mode_boost + x->act_zbin_adj)) >> 7;
const int uv_zbin_extra = (cpi->common.uv_dequant[qindex][1] *
(cpi->zbin_mode_boost + x->act_zbin_adj)) >> 7;
x->plane[0].zbin_extra = (int16_t)y_zbin_extra;
x->plane[1].zbin_extra = (int16_t)uv_zbin_extra;
x->plane[2].zbin_extra = (int16_t)uv_zbin_extra;
}
void vp9_frame_init_quantizer(VP9_COMP *cpi) {
// Clear Zbin mode boost for default case
cpi->zbin_mode_boost = 0;
// MB level quantizer setup
vp9_mb_init_quantizer(cpi, &cpi->mb);
}
void vp9_set_quantizer(struct VP9_COMP *cpi, int q) {
VP9_COMMON *cm = &cpi->common;
cm->base_qindex = q;
// if any of the delta_q values are changing update flag will
// have to be set.
cm->y_dc_delta_q = 0;
cm->uv_dc_delta_q = 0;
cm->uv_ac_delta_q = 0;
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// quantizer has to be reinitialized if any delta_q changes.
// As there are not any here for now this is inactive code.
// if(update)
// vp9_init_quantizer(cpi);
}