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|
/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
Copyright (C) 2009 Red Hat, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef ONE_BYTE
#undef ONE_BYTE
#define FNAME(name) quic_one_##name
#define PIXEL one_byte_t
#endif
#ifdef THREE_BYTE
#undef THREE_BYTE
#define FNAME(name) quic_three_##name
#define PIXEL three_bytes_t
#endif
#ifdef FOUR_BYTE
#undef FOUR_BYTE
#define FNAME(name) quic_four_##name
#define PIXEL four_bytes_t
#endif
#define golomb_coding golomb_coding_8bpc
#define golomb_decoding golomb_decoding_8bpc
#define update_model update_model_8bpc
#define find_bucket find_bucket_8bpc
#define family family_8bpc
#define BPC 8
#define BPC_MASK 0xffU
#define _PIXEL_A ((unsigned int)curr[-1].a)
#define _PIXEL_B ((unsigned int)prev[0].a)
#define _PIXEL_C ((unsigned int)prev[-1].a)
#ifdef RLE_PRED_1
#define RLE_PRED_1_IMP \
if (cur_row[i - 1].a == prev_row[i].a) { \
if (run_index != i && prev_row[i - 1].a == prev_row[i].a && \
i + 1 < end && prev_row[i].a == prev_row[i + 1].a) { \
goto do_run; \
} \
}
#else
#define RLE_PRED_1_IMP
#endif
#ifdef RLE_PRED_2
#define RLE_PRED_2_IMP \
if (prev_row[i - 1].a == prev_row[i].a) { \
if (run_index != i && i > 2 && cur_row[i - 1].a == cur_row[i - 2].a) { \
goto do_run; \
} \
}
#else
#define RLE_PRED_2_IMP
#endif
#ifdef RLE_PRED_3
#define RLE_PRED_3_IMP \
if (i > 1 && cur_row[i - 1].a == cur_row[i - 2].a && i != run_index) { \
goto do_run; \
}
#else
#define RLE_PRED_3_IMP
#endif
/* a */
static INLINE BYTE FNAME(decorelate_0)(const PIXEL * const curr, const unsigned int bpc_mask)
{
return family.xlatU2L[(unsigned)((int)curr[0].a - (int)_PIXEL_A) & bpc_mask];
}
static INLINE void FNAME(corelate_0)(PIXEL *curr, const BYTE corelate,
const unsigned int bpc_mask)
{
curr->a = (family.xlatL2U[corelate] + _PIXEL_A) & bpc_mask;
}
#ifdef PRED_1
/* (a+b)/2 */
static INLINE BYTE FNAME(decorelate)(const PIXEL *const prev, const PIXEL * const curr,
const unsigned int bpc_mask)
{
return family.xlatU2L[(unsigned)((int)curr->a - (int)((_PIXEL_A + _PIXEL_B) >> 1)) & bpc_mask];
}
static INLINE void FNAME(corelate)(const PIXEL *prev, PIXEL *curr, const BYTE corelate,
const unsigned int bpc_mask)
{
curr->a = (family.xlatL2U[corelate] + (int)((_PIXEL_A + _PIXEL_B) >> 1)) & bpc_mask;
}
#endif
#ifdef PRED_2
/* .75a+.75b-.5c */
static INLINE BYTE FNAME(decorelate)(const PIXEL *const prev, const PIXEL * const curr,
const unsigned int bpc_mask)
{
int p = ((int)(3 * (_PIXEL_A + _PIXEL_B)) - (int)(_PIXEL_C << 1)) >> 2;
if (p < 0) {
p = 0;
} else if ((unsigned)p > bpc_mask) {
p = bpc_mask;
}
{
return family.xlatU2L[(unsigned)((int)curr->a - p) & bpc_mask];
}
}
static INLINE void FNAME(corelate)(const PIXEL *prev, PIXEL *curr, const BYTE corelate,
const unsigned int bpc_mask)
{
const int p = ((int)(3 * (_PIXEL_A + _PIXEL_B)) - (int)(_PIXEL_C << 1)) >> 2;
const unsigned int s = family.xlatL2U[corelate];
if (!(p & ~bpc_mask)) {
curr->a = (s + (unsigned)p) & bpc_mask;
} else if (p < 0) {
curr->a = s;
} else {
curr->a = (s + bpc_mask) & bpc_mask;
}
}
#endif
static void FNAME(compress_row0_seg)(Encoder *encoder, Channel *channel, int i,
const PIXEL * const cur_row,
const int end,
const unsigned int waitmask,
const unsigned int bpc,
const unsigned int bpc_mask)
{
BYTE * const decorelate_drow = channel->correlate_row;
int stopidx;
ASSERT(encoder->usr, end - i > 0);
if (i == 0) {
unsigned int codeword, codewordlen;
decorelate_drow[0] = family.xlatU2L[cur_row->a];
golomb_coding(decorelate_drow[0], find_bucket(channel, decorelate_drow[-1])->bestcode,
&codeword, &codewordlen);
encode(encoder, codeword, codewordlen);
if (channel->state.waitcnt) {
channel->state.waitcnt--;
} else {
channel->state.waitcnt = (tabrand(&channel->state.tabrand_seed) & waitmask);
update_model(&channel->state, find_bucket(channel, decorelate_drow[-1]),
decorelate_drow[i], bpc);
}
stopidx = ++i + channel->state.waitcnt;
} else {
stopidx = i + channel->state.waitcnt;
}
while (stopidx < end) {
for (; i <= stopidx; i++) {
unsigned int codeword, codewordlen;
decorelate_drow[i] = FNAME(decorelate_0)(&cur_row[i], bpc_mask);
golomb_coding(decorelate_drow[i],
find_bucket(channel, decorelate_drow[i - 1])->bestcode, &codeword,
&codewordlen);
encode(encoder, codeword, codewordlen);
}
update_model(&channel->state, find_bucket(channel, decorelate_drow[stopidx - 1]),
decorelate_drow[stopidx], bpc);
stopidx = i + (tabrand(&channel->state.tabrand_seed) & waitmask);
}
for (; i < end; i++) {
unsigned int codeword, codewordlen;
decorelate_drow[i] = FNAME(decorelate_0)(&cur_row[i], bpc_mask);
golomb_coding(decorelate_drow[i], find_bucket(channel, decorelate_drow[i - 1])->bestcode,
&codeword, &codewordlen);
encode(encoder, codeword, codewordlen);
}
channel->state.waitcnt = stopidx - end;
}
static void FNAME(compress_row0)(Encoder *encoder, Channel *channel, const PIXEL *cur_row,
unsigned int width)
{
const unsigned int bpc = BPC;
const unsigned int bpc_mask = BPC_MASK;
int pos = 0;
while ((wmimax > (int)channel->state.wmidx) && (channel->state.wmileft <= width)) {
if (channel->state.wmileft) {
FNAME(compress_row0_seg)(encoder, channel, pos, cur_row, pos + channel->state.wmileft,
bppmask[channel->state.wmidx], bpc, bpc_mask);
width -= channel->state.wmileft;
pos += channel->state.wmileft;
}
channel->state.wmidx++;
set_wm_trigger(&channel->state);
channel->state.wmileft = wminext;
}
if (width) {
FNAME(compress_row0_seg)(encoder, channel, pos, cur_row, pos + width,
bppmask[channel->state.wmidx], bpc, bpc_mask);
if (wmimax > (int)channel->state.wmidx) {
channel->state.wmileft -= width;
}
}
ASSERT(encoder->usr, (int)channel->state.wmidx <= wmimax);
ASSERT(encoder->usr, channel->state.wmidx <= 32);
ASSERT(encoder->usr, wminext > 0);
}
static void FNAME(compress_row_seg)(Encoder *encoder, Channel *channel, int i,
const PIXEL * const prev_row,
const PIXEL * const cur_row,
const int end,
const unsigned int waitmask,
const unsigned int bpc,
const unsigned int bpc_mask)
{
BYTE * const decorelate_drow = channel->correlate_row;
int stopidx;
#ifdef RLE
int run_index = 0;
int run_size;
#endif
ASSERT(encoder->usr, end - i > 0);
if (!i) {
unsigned int codeword, codewordlen;
decorelate_drow[0] = family.xlatU2L[(unsigned)((int)cur_row->a -
(int)prev_row->a) & bpc_mask];
golomb_coding(decorelate_drow[0],
find_bucket(channel, decorelate_drow[-1])->bestcode,
&codeword,
&codewordlen);
encode(encoder, codeword, codewordlen);
if (channel->state.waitcnt) {
channel->state.waitcnt--;
} else {
channel->state.waitcnt = (tabrand(&channel->state.tabrand_seed) & waitmask);
update_model(&channel->state, find_bucket(channel, decorelate_drow[-1]),
decorelate_drow[0], bpc);
}
stopidx = ++i + channel->state.waitcnt;
} else {
stopidx = i + channel->state.waitcnt;
}
for (;;) {
while (stopidx < end) {
for (; i <= stopidx; i++) {
unsigned int codeword, codewordlen;
#ifdef RLE
RLE_PRED_1_IMP;
RLE_PRED_2_IMP;
RLE_PRED_3_IMP;
#endif
decorelate_drow[i] = FNAME(decorelate)(&prev_row[i], &cur_row[i], bpc_mask);
golomb_coding(decorelate_drow[i],
find_bucket(channel, decorelate_drow[i - 1])->bestcode, &codeword,
&codewordlen);
encode(encoder, codeword, codewordlen);
}
update_model(&channel->state, find_bucket(channel, decorelate_drow[stopidx - 1]),
decorelate_drow[stopidx], bpc);
stopidx = i + (tabrand(&channel->state.tabrand_seed) & waitmask);
}
for (; i < end; i++) {
unsigned int codeword, codewordlen;
#ifdef RLE
RLE_PRED_1_IMP;
RLE_PRED_2_IMP;
RLE_PRED_3_IMP;
#endif
decorelate_drow[i] = FNAME(decorelate)(&prev_row[i], &cur_row[i], bpc_mask);
golomb_coding(decorelate_drow[i], find_bucket(channel,
decorelate_drow[i - 1])->bestcode,
&codeword, &codewordlen);
encode(encoder, codeword, codewordlen);
}
channel->state.waitcnt = stopidx - end;
return;
#ifdef RLE
do_run:
run_index = i;
channel->state.waitcnt = stopidx - i;
run_size = 0;
while (cur_row[i].a == cur_row[i - 1].a) {
run_size++;
if (++i == end) {
#ifdef RLE_STAT
encode_channel_run(encoder, channel, run_size);
#else
encode_run(encoder, run_size);
#endif
return;
}
}
#ifdef RLE_STAT
encode_channel_run(encoder, channel, run_size);
#else
encode_run(encoder, run_size);
#endif
stopidx = i + channel->state.waitcnt;
#endif
}
}
static void FNAME(compress_row)(Encoder *encoder, Channel *channel,
const PIXEL * const prev_row,
const PIXEL * const cur_row,
unsigned int width)
{
const unsigned int bpc = BPC;
const unsigned int bpc_mask = BPC_MASK;
unsigned int pos = 0;
while ((wmimax > (int)channel->state.wmidx) && (channel->state.wmileft <= width)) {
if (channel->state.wmileft) {
FNAME(compress_row_seg)(encoder, channel, pos, prev_row, cur_row,
pos + channel->state.wmileft, bppmask[channel->state.wmidx],
bpc, bpc_mask);
width -= channel->state.wmileft;
pos += channel->state.wmileft;
}
channel->state.wmidx++;
set_wm_trigger(&channel->state);
channel->state.wmileft = wminext;
}
if (width) {
FNAME(compress_row_seg)(encoder, channel, pos, prev_row, cur_row, pos + width,
bppmask[channel->state.wmidx], bpc, bpc_mask);
if (wmimax > (int)channel->state.wmidx) {
channel->state.wmileft -= width;
}
}
ASSERT(encoder->usr, (int)channel->state.wmidx <= wmimax);
ASSERT(encoder->usr, channel->state.wmidx <= 32);
ASSERT(encoder->usr, wminext > 0);
}
static void FNAME(uncompress_row0_seg)(Encoder *encoder, Channel *channel, int i,
BYTE * const correlate_row,
PIXEL * const cur_row,
const int end,
const unsigned int waitmask,
const unsigned int bpc,
const unsigned int bpc_mask)
{
int stopidx;
ASSERT(encoder->usr, end - i > 0);
if (i == 0) {
unsigned int codewordlen;
correlate_row[0] = (BYTE)golomb_decoding(find_bucket(channel,
correlate_row[-1])->bestcode,
encoder->io_word, &codewordlen);
cur_row[0].a = (BYTE)family.xlatL2U[correlate_row[0]];
decode_eatbits(encoder, codewordlen);
if (channel->state.waitcnt) {
--channel->state.waitcnt;
} else {
channel->state.waitcnt = (tabrand(&channel->state.tabrand_seed) & waitmask);
update_model(&channel->state, find_bucket(channel, correlate_row[-1]),
correlate_row[0], bpc);
}
stopidx = ++i + channel->state.waitcnt;
} else {
stopidx = i + channel->state.waitcnt;
}
while (stopidx < end) {
struct s_bucket * pbucket = NULL;
for (; i <= stopidx; i++) {
unsigned int codewordlen;
pbucket = find_bucket(channel, correlate_row[i - 1]);
correlate_row[i] = (BYTE)golomb_decoding(pbucket->bestcode, encoder->io_word,
&codewordlen);
FNAME(corelate_0)(&cur_row[i], correlate_row[i], bpc_mask);
decode_eatbits(encoder, codewordlen);
}
update_model(&channel->state, pbucket, correlate_row[stopidx], bpc);
stopidx = i + (tabrand(&channel->state.tabrand_seed) & waitmask);
}
for (; i < end; i++) {
unsigned int codewordlen;
correlate_row[i] = (BYTE)golomb_decoding(find_bucket(channel,
correlate_row[i - 1])->bestcode,
encoder->io_word, &codewordlen);
FNAME(corelate_0)(&cur_row[i], correlate_row[i], bpc_mask);
decode_eatbits(encoder, codewordlen);
}
channel->state.waitcnt = stopidx - end;
}
static void FNAME(uncompress_row0)(Encoder *encoder, Channel *channel,
PIXEL * const cur_row,
unsigned int width)
{
const unsigned int bpc = BPC;
const unsigned int bpc_mask = BPC_MASK;
BYTE * const correlate_row = channel->correlate_row;
unsigned int pos = 0;
while ((wmimax > (int)channel->state.wmidx) && (channel->state.wmileft <= width)) {
if (channel->state.wmileft) {
FNAME(uncompress_row0_seg)(encoder, channel, pos, correlate_row, cur_row,
pos + channel->state.wmileft, bppmask[channel->state.wmidx],
bpc, bpc_mask);
pos += channel->state.wmileft;
width -= channel->state.wmileft;
}
channel->state.wmidx++;
set_wm_trigger(&channel->state);
channel->state.wmileft = wminext;
}
if (width) {
FNAME(uncompress_row0_seg)(encoder, channel, pos, correlate_row, cur_row, pos + width,
bppmask[channel->state.wmidx], bpc, bpc_mask);
if (wmimax > (int)channel->state.wmidx) {
channel->state.wmileft -= width;
}
}
ASSERT(encoder->usr, (int)channel->state.wmidx <= wmimax);
ASSERT(encoder->usr, channel->state.wmidx <= 32);
ASSERT(encoder->usr, wminext > 0);
}
static void FNAME(uncompress_row_seg)(Encoder *encoder, Channel *channel,
BYTE *correlate_row,
const PIXEL * const prev_row,
PIXEL * const cur_row,
int i,
const int end,
const unsigned int bpc,
const unsigned int bpc_mask)
{
const unsigned int waitmask = bppmask[channel->state.wmidx];
int stopidx;
#ifdef RLE
int run_index = 0;
int run_end;
#endif
ASSERT(encoder->usr, end - i > 0);
if (i == 0) {
unsigned int codewordlen;
correlate_row[0] = (BYTE)golomb_decoding(find_bucket(channel, correlate_row[-1])->bestcode,
encoder->io_word, &codewordlen);
cur_row[0].a = (family.xlatL2U[correlate_row[0]] + prev_row[0].a) & bpc_mask;
decode_eatbits(encoder, codewordlen);
if (channel->state.waitcnt) {
--channel->state.waitcnt;
} else {
channel->state.waitcnt = (tabrand(&channel->state.tabrand_seed) & waitmask);
update_model(&channel->state, find_bucket(channel, correlate_row[-1]),
correlate_row[0], bpc);
}
stopidx = ++i + channel->state.waitcnt;
} else {
stopidx = i + channel->state.waitcnt;
}
for (;;) {
while (stopidx < end) {
struct s_bucket * pbucket = NULL;
for (; i <= stopidx; i++) {
unsigned int codewordlen;
#ifdef RLE
RLE_PRED_1_IMP;
RLE_PRED_2_IMP;
RLE_PRED_3_IMP;
#endif
pbucket = find_bucket(channel, correlate_row[i - 1]);
correlate_row[i] = (BYTE)golomb_decoding(pbucket->bestcode, encoder->io_word,
&codewordlen);
FNAME(corelate)(&prev_row[i], &cur_row[i], correlate_row[i], bpc_mask);
decode_eatbits(encoder, codewordlen);
}
update_model(&channel->state, pbucket, correlate_row[stopidx], bpc);
stopidx = i + (tabrand(&channel->state.tabrand_seed) & waitmask);
}
for (; i < end; i++) {
unsigned int codewordlen;
#ifdef RLE
RLE_PRED_1_IMP;
RLE_PRED_2_IMP;
RLE_PRED_3_IMP;
#endif
correlate_row[i] = (BYTE)golomb_decoding(find_bucket(channel,
correlate_row[i - 1])->bestcode,
encoder->io_word, &codewordlen);
FNAME(corelate)(&prev_row[i], &cur_row[i], correlate_row[i], bpc_mask);
decode_eatbits(encoder, codewordlen);
}
channel->state.waitcnt = stopidx - end;
return;
#ifdef RLE
do_run:
channel->state.waitcnt = stopidx - i;
run_index = i;
#ifdef RLE_STAT
run_end = i + decode_channel_run(encoder, channel);
#else
run_end = i + decode_run(encoder);
#endif
for (; i < run_end; i++) {
cur_row[i].a = cur_row[i - 1].a;
}
if (i == end) {
return;
}
stopidx = i + channel->state.waitcnt;
#endif
}
}
static void FNAME(uncompress_row)(Encoder *encoder, Channel *channel,
const PIXEL * const prev_row,
PIXEL * const cur_row,
unsigned int width)
{
const unsigned int bpc = BPC;
const unsigned int bpc_mask = BPC_MASK;
BYTE * const correlate_row = channel->correlate_row;
unsigned int pos = 0;
while ((wmimax > (int)channel->state.wmidx) && (channel->state.wmileft <= width)) {
if (channel->state.wmileft) {
FNAME(uncompress_row_seg)(encoder, channel, correlate_row, prev_row, cur_row, pos,
pos + channel->state.wmileft, bpc, bpc_mask);
pos += channel->state.wmileft;
width -= channel->state.wmileft;
}
channel->state.wmidx++;
set_wm_trigger(&channel->state);
channel->state.wmileft = wminext;
}
if (width) {
FNAME(uncompress_row_seg)(encoder, channel, correlate_row, prev_row, cur_row, pos,
pos + width, bpc, bpc_mask);
if (wmimax > (int)channel->state.wmidx) {
channel->state.wmileft -= width;
}
}
ASSERT(encoder->usr, (int)channel->state.wmidx <= wmimax);
ASSERT(encoder->usr, channel->state.wmidx <= 32);
ASSERT(encoder->usr, wminext > 0);
}
#undef PIXEL
#undef FNAME
#undef _PIXEL_A
#undef _PIXEL_B
#undef _PIXEL_C
#undef RLE_PRED_1_IMP
#undef RLE_PRED_2_IMP
#undef RLE_PRED_3_IMP
#undef golomb_coding
#undef golomb_deoding
#undef update_model
#undef find_bucket
#undef family
#undef BPC
#undef BPC_MASK
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