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path: root/src/lib/lib7z/Ppmd8Enc.c
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Diffstat (limited to 'src/lib/lib7z/Ppmd8Enc.c')
-rw-r--r--src/lib/lib7z/Ppmd8Enc.c242
1 files changed, 121 insertions, 121 deletions
diff --git a/src/lib/lib7z/Ppmd8Enc.c b/src/lib/lib7z/Ppmd8Enc.c
index f433fe9ee0a..87a3e344495 100644
--- a/src/lib/lib7z/Ppmd8Enc.c
+++ b/src/lib/lib7z/Ppmd8Enc.c
@@ -11,41 +11,41 @@ This code is based on:
void Ppmd8_RangeEnc_FlushData(CPpmd8 *p)
{
- unsigned i;
- for (i = 0; i < 4; i++, p->Low <<= 8 )
- p->Stream.Out->Write(p->Stream.Out, (Byte)(p->Low >> 24));
+ unsigned i;
+ for (i = 0; i < 4; i++, p->Low <<= 8 )
+ p->Stream.Out->Write(p->Stream.Out, (Byte)(p->Low >> 24));
}
static void RangeEnc_Normalize(CPpmd8 *p)
{
- while ((p->Low ^ (p->Low + p->Range)) < kTop ||
- (p->Range < kBot && ((p->Range = (0 - p->Low) & (kBot - 1)), 1)))
- {
- p->Stream.Out->Write(p->Stream.Out, (Byte)(p->Low >> 24));
- p->Range <<= 8;
- p->Low <<= 8;
- }
+ while ((p->Low ^ (p->Low + p->Range)) < kTop ||
+ (p->Range < kBot && ((p->Range = (0 - p->Low) & (kBot - 1)), 1)))
+ {
+ p->Stream.Out->Write(p->Stream.Out, (Byte)(p->Low >> 24));
+ p->Range <<= 8;
+ p->Low <<= 8;
+ }
}
static void RangeEnc_Encode(CPpmd8 *p, UInt32 start, UInt32 size, UInt32 total)
{
- p->Low += start * (p->Range /= total);
- p->Range *= size;
- RangeEnc_Normalize(p);
+ p->Low += start * (p->Range /= total);
+ p->Range *= size;
+ RangeEnc_Normalize(p);
}
static void RangeEnc_EncodeBit_0(CPpmd8 *p, UInt32 size0)
{
- p->Range >>= 14;
- p->Range *= size0;
- RangeEnc_Normalize(p);
+ p->Range >>= 14;
+ p->Range *= size0;
+ RangeEnc_Normalize(p);
}
static void RangeEnc_EncodeBit_1(CPpmd8 *p, UInt32 size0)
{
- p->Low += size0 * (p->Range >>= 14);
- p->Range *= ((1 << 14) - size0);
- RangeEnc_Normalize(p);
+ p->Low += size0 * (p->Range >>= 14);
+ p->Range *= ((1 << 14) - size0);
+ RangeEnc_Normalize(p);
}
@@ -53,109 +53,109 @@ static void RangeEnc_EncodeBit_1(CPpmd8 *p, UInt32 size0)
void Ppmd8_EncodeSymbol(CPpmd8 *p, int symbol)
{
- size_t charMask[256 / sizeof(size_t)];
- if (p->MinContext->NumStats != 0)
- {
- CPpmd_State *s = Ppmd8_GetStats(p, p->MinContext);
- UInt32 sum;
- unsigned i;
- if (s->Symbol == symbol)
- {
- RangeEnc_Encode(p, 0, s->Freq, p->MinContext->SummFreq);
- p->FoundState = s;
- Ppmd8_Update1_0(p);
- return;
- }
- p->PrevSuccess = 0;
- sum = s->Freq;
- i = p->MinContext->NumStats;
- do
- {
- if ((++s)->Symbol == symbol)
- {
- RangeEnc_Encode(p, sum, s->Freq, p->MinContext->SummFreq);
- p->FoundState = s;
- Ppmd8_Update1(p);
- return;
- }
- sum += s->Freq;
- }
- while (--i);
+ size_t charMask[256 / sizeof(size_t)];
+ if (p->MinContext->NumStats != 0)
+ {
+ CPpmd_State *s = Ppmd8_GetStats(p, p->MinContext);
+ UInt32 sum;
+ unsigned i;
+ if (s->Symbol == symbol)
+ {
+ RangeEnc_Encode(p, 0, s->Freq, p->MinContext->SummFreq);
+ p->FoundState = s;
+ Ppmd8_Update1_0(p);
+ return;
+ }
+ p->PrevSuccess = 0;
+ sum = s->Freq;
+ i = p->MinContext->NumStats;
+ do
+ {
+ if ((++s)->Symbol == symbol)
+ {
+ RangeEnc_Encode(p, sum, s->Freq, p->MinContext->SummFreq);
+ p->FoundState = s;
+ Ppmd8_Update1(p);
+ return;
+ }
+ sum += s->Freq;
+ }
+ while (--i);
- PPMD_SetAllBitsIn256Bytes(charMask);
- MASK(s->Symbol) = 0;
- i = p->MinContext->NumStats;
- do { MASK((--s)->Symbol) = 0; } while (--i);
- RangeEnc_Encode(p, sum, p->MinContext->SummFreq - sum, p->MinContext->SummFreq);
- }
- else
- {
- UInt16 *prob = Ppmd8_GetBinSumm(p);
- CPpmd_State *s = Ppmd8Context_OneState(p->MinContext);
- if (s->Symbol == symbol)
- {
- RangeEnc_EncodeBit_0(p, *prob);
- *prob = (UInt16)PPMD_UPDATE_PROB_0(*prob);
- p->FoundState = s;
- Ppmd8_UpdateBin(p);
- return;
- }
- else
- {
- RangeEnc_EncodeBit_1(p, *prob);
- *prob = (UInt16)PPMD_UPDATE_PROB_1(*prob);
- p->InitEsc = PPMD8_kExpEscape[*prob >> 10];
- PPMD_SetAllBitsIn256Bytes(charMask);
- MASK(s->Symbol) = 0;
- p->PrevSuccess = 0;
- }
- }
- for (;;)
- {
- UInt32 escFreq;
- CPpmd_See *see;
- CPpmd_State *s;
- UInt32 sum;
- unsigned i, numMasked = p->MinContext->NumStats;
- do
- {
- p->OrderFall++;
- if (!p->MinContext->Suffix)
- return; /* EndMarker (symbol = -1) */
- p->MinContext = Ppmd8_GetContext(p, p->MinContext->Suffix);
- }
- while (p->MinContext->NumStats == numMasked);
+ PPMD_SetAllBitsIn256Bytes(charMask);
+ MASK(s->Symbol) = 0;
+ i = p->MinContext->NumStats;
+ do { MASK((--s)->Symbol) = 0; } while (--i);
+ RangeEnc_Encode(p, sum, p->MinContext->SummFreq - sum, p->MinContext->SummFreq);
+ }
+ else
+ {
+ UInt16 *prob = Ppmd8_GetBinSumm(p);
+ CPpmd_State *s = Ppmd8Context_OneState(p->MinContext);
+ if (s->Symbol == symbol)
+ {
+ RangeEnc_EncodeBit_0(p, *prob);
+ *prob = (UInt16)PPMD_UPDATE_PROB_0(*prob);
+ p->FoundState = s;
+ Ppmd8_UpdateBin(p);
+ return;
+ }
+ else
+ {
+ RangeEnc_EncodeBit_1(p, *prob);
+ *prob = (UInt16)PPMD_UPDATE_PROB_1(*prob);
+ p->InitEsc = PPMD8_kExpEscape[*prob >> 10];
+ PPMD_SetAllBitsIn256Bytes(charMask);
+ MASK(s->Symbol) = 0;
+ p->PrevSuccess = 0;
+ }
+ }
+ for (;;)
+ {
+ UInt32 escFreq;
+ CPpmd_See *see;
+ CPpmd_State *s;
+ UInt32 sum;
+ unsigned i, numMasked = p->MinContext->NumStats;
+ do
+ {
+ p->OrderFall++;
+ if (!p->MinContext->Suffix)
+ return; /* EndMarker (symbol = -1) */
+ p->MinContext = Ppmd8_GetContext(p, p->MinContext->Suffix);
+ }
+ while (p->MinContext->NumStats == numMasked);
- see = Ppmd8_MakeEscFreq(p, numMasked, &escFreq);
- s = Ppmd8_GetStats(p, p->MinContext);
- sum = 0;
- i = p->MinContext->NumStats + 1;
- do
- {
- int cur = s->Symbol;
- if (cur == symbol)
- {
- UInt32 low = sum;
- CPpmd_State *s1 = s;
- do
- {
- sum += (s->Freq & (int)(MASK(s->Symbol)));
- s++;
- }
- while (--i);
- RangeEnc_Encode(p, low, s1->Freq, sum + escFreq);
- Ppmd_See_Update(see);
- p->FoundState = s1;
- Ppmd8_Update2(p);
- return;
- }
- sum += (s->Freq & (int)(MASK(cur)));
- MASK(cur) = 0;
- s++;
- }
- while (--i);
+ see = Ppmd8_MakeEscFreq(p, numMasked, &escFreq);
+ s = Ppmd8_GetStats(p, p->MinContext);
+ sum = 0;
+ i = p->MinContext->NumStats + 1;
+ do
+ {
+ int cur = s->Symbol;
+ if (cur == symbol)
+ {
+ UInt32 low = sum;
+ CPpmd_State *s1 = s;
+ do
+ {
+ sum += (s->Freq & (int)(MASK(s->Symbol)));
+ s++;
+ }
+ while (--i);
+ RangeEnc_Encode(p, low, s1->Freq, sum + escFreq);
+ Ppmd_See_Update(see);
+ p->FoundState = s1;
+ Ppmd8_Update2(p);
+ return;
+ }
+ sum += (s->Freq & (int)(MASK(cur)));
+ MASK(cur) = 0;
+ s++;
+ }
+ while (--i);
- RangeEnc_Encode(p, sum, escFreq, sum + escFreq);
- see->Summ = (UInt16)(see->Summ + sum + escFreq);
- }
+ RangeEnc_Encode(p, sum, escFreq, sum + escFreq);
+ see->Summ = (UInt16)(see->Summ + sum + escFreq);
+ }
}