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-rw-r--r--media/libstagefright/codecs/aacenc/src/bit_cnt.c885
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diff --git a/media/libstagefright/codecs/aacenc/src/bit_cnt.c b/media/libstagefright/codecs/aacenc/src/bit_cnt.c
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index 0000000..9fe511c
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+++ b/media/libstagefright/codecs/aacenc/src/bit_cnt.c
@@ -0,0 +1,885 @@
+/*
+ ** Copyright 2003-2010, VisualOn, Inc.
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ ** http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+/*******************************************************************************
+ File: bit_cnt.c
+
+ Content: Huffman Bitcounter & coder functions
+
+*******************************************************************************/
+
+#include "bit_cnt.h"
+#include "aac_rom.h"
+
+#define HI_LTAB(a) (a>>8)
+#define LO_LTAB(a) (a & 0xff)
+
+#define EXPAND(a) ((((Word32)(a&0xff00)) << 8)|(Word32)(a&0xff))
+
+
+/*****************************************************************************
+*
+* function name: count1_2_3_4_5_6_7_8_9_10_11
+* description: counts tables 1-11
+* returns:
+* input: quantized spectrum
+* output: bitCount for tables 1-11
+*
+*****************************************************************************/
+
+static void count1_2_3_4_5_6_7_8_9_10_11(const Word16 *values,
+ const Word16 width,
+ Word16 *bitCount)
+{
+ Word32 t0,t1,t2,t3,i;
+ Word32 bc1_2,bc3_4,bc5_6,bc7_8,bc9_10;
+ Word16 bc11,sc;
+
+ bc1_2=0;
+ bc3_4=0;
+ bc5_6=0;
+ bc7_8=0;
+ bc9_10=0;
+ bc11=0;
+ sc=0;
+
+ for(i=0;i<width;i+=4){
+
+ t0= values[i+0];
+ t1= values[i+1];
+ t2= values[i+2];
+ t3= values[i+3];
+
+ /* 1,2 */
+
+ bc1_2 = bc1_2 + EXPAND(huff_ltab1_2[t0+1][t1+1][t2+1][t3+1]);
+
+ /* 5,6 */
+ bc5_6 = bc5_6 + EXPAND(huff_ltab5_6[t0+4][t1+4]);
+ bc5_6 = bc5_6 + EXPAND(huff_ltab5_6[t2+4][t3+4]);
+
+ t0=ABS(t0);
+ t1=ABS(t1);
+ t2=ABS(t2);
+ t3=ABS(t3);
+
+
+ bc3_4 = bc3_4 + EXPAND(huff_ltab3_4[t0][t1][t2][t3]);
+
+ bc7_8 = bc7_8 + EXPAND(huff_ltab7_8[t0][t1]);
+ bc7_8 = bc7_8 + EXPAND(huff_ltab7_8[t2][t3]);
+
+ bc9_10 = bc9_10 + EXPAND(huff_ltab9_10[t0][t1]);
+ bc9_10 = bc9_10 + EXPAND(huff_ltab9_10[t2][t3]);
+
+ bc11 = bc11 + huff_ltab11[t0][t1];
+ bc11 = bc11 + huff_ltab11[t2][t3];
+
+
+ sc = sc + (t0>0) + (t1>0) + (t2>0) + (t3>0);
+ }
+
+ bitCount[1]=extract_h(bc1_2);
+ bitCount[2]=extract_l(bc1_2);
+ bitCount[3]=extract_h(bc3_4) + sc;
+ bitCount[4]=extract_l(bc3_4) + sc;
+ bitCount[5]=extract_h(bc5_6);
+ bitCount[6]=extract_l(bc5_6);
+ bitCount[7]=extract_h(bc7_8) + sc;
+ bitCount[8]=extract_l(bc7_8) + sc;
+ bitCount[9]=extract_h(bc9_10) + sc;
+ bitCount[10]=extract_l(bc9_10) + sc;
+ bitCount[11]=bc11 + sc;
+}
+
+
+/*****************************************************************************
+*
+* function name: count3_4_5_6_7_8_9_10_11
+* description: counts tables 3-11
+* returns:
+* input: quantized spectrum
+* output: bitCount for tables 3-11
+*
+*****************************************************************************/
+
+static void count3_4_5_6_7_8_9_10_11(const Word16 *values,
+ const Word16 width,
+ Word16 *bitCount)
+{
+ Word32 t0,t1,t2,t3, i;
+ Word32 bc3_4,bc5_6,bc7_8,bc9_10;
+ Word16 bc11,sc;
+
+ bc3_4=0;
+ bc5_6=0;
+ bc7_8=0;
+ bc9_10=0;
+ bc11=0;
+ sc=0;
+
+ for(i=0;i<width;i+=4){
+
+ t0= values[i+0];
+ t1= values[i+1];
+ t2= values[i+2];
+ t3= values[i+3];
+
+ /*
+ 5,6
+ */
+ bc5_6 = bc5_6 + EXPAND(huff_ltab5_6[t0+4][t1+4]);
+ bc5_6 = bc5_6 + EXPAND(huff_ltab5_6[t2+4][t3+4]);
+
+ t0=ABS(t0);
+ t1=ABS(t1);
+ t2=ABS(t2);
+ t3=ABS(t3);
+
+
+ bc3_4 = bc3_4 + EXPAND(huff_ltab3_4[t0][t1][t2][t3]);
+
+ bc7_8 = bc7_8 + EXPAND(huff_ltab7_8[t0][t1]);
+ bc7_8 = bc7_8 + EXPAND(huff_ltab7_8[t2][t3]);
+
+ bc9_10 = bc9_10 + EXPAND(huff_ltab9_10[t0][t1]);
+ bc9_10 = bc9_10 + EXPAND(huff_ltab9_10[t2][t3]);
+
+ bc11 = bc11 + huff_ltab11[t0][t1];
+ bc11 = bc11 + huff_ltab11[t2][t3];
+
+
+ sc = sc + (t0>0) + (t1>0) + (t2>0) + (t3>0);
+ }
+
+ bitCount[1]=INVALID_BITCOUNT;
+ bitCount[2]=INVALID_BITCOUNT;
+ bitCount[3]=extract_h(bc3_4) + sc;
+ bitCount[4]=extract_l(bc3_4) + sc;
+ bitCount[5]=extract_h(bc5_6);
+ bitCount[6]=extract_l(bc5_6);
+ bitCount[7]=extract_h(bc7_8) + sc;
+ bitCount[8]=extract_l(bc7_8) + sc;
+ bitCount[9]=extract_h(bc9_10) + sc;
+ bitCount[10]=extract_l(bc9_10) + sc;
+ bitCount[11]=bc11 + sc;
+
+}
+
+
+
+/*****************************************************************************
+*
+* function name: count5_6_7_8_9_10_11
+* description: counts tables 5-11
+* returns:
+* input: quantized spectrum
+* output: bitCount for tables 5-11
+*
+*****************************************************************************/
+static void count5_6_7_8_9_10_11(const Word16 *values,
+ const Word16 width,
+ Word16 *bitCount)
+{
+
+ Word32 t0,t1,i;
+ Word32 bc5_6,bc7_8,bc9_10;
+ Word16 bc11,sc;
+
+ bc5_6=0;
+ bc7_8=0;
+ bc9_10=0;
+ bc11=0;
+ sc=0;
+
+ for(i=0;i<width;i+=2){
+
+ t0 = values[i+0];
+ t1 = values[i+1];
+
+ bc5_6 = bc5_6 + EXPAND(huff_ltab5_6[t0+4][t1+4]);
+
+ t0=ABS(t0);
+ t1=ABS(t1);
+
+ bc7_8 = bc7_8 + EXPAND(huff_ltab7_8[t0][t1]);
+ bc9_10 = bc9_10 + EXPAND(huff_ltab9_10[t0][t1]);
+ bc11 = bc11 + huff_ltab11[t0][t1];
+
+
+ sc = sc + (t0>0) + (t1>0);
+ }
+ bitCount[1]=INVALID_BITCOUNT;
+ bitCount[2]=INVALID_BITCOUNT;
+ bitCount[3]=INVALID_BITCOUNT;
+ bitCount[4]=INVALID_BITCOUNT;
+ bitCount[5]=extract_h(bc5_6);
+ bitCount[6]=extract_l(bc5_6);
+ bitCount[7]=extract_h(bc7_8) + sc;
+ bitCount[8]=extract_l(bc7_8) + sc;
+ bitCount[9]=extract_h(bc9_10) + sc;
+ bitCount[10]=extract_l(bc9_10) + sc;
+ bitCount[11]=bc11 + sc;
+
+}
+
+
+/*****************************************************************************
+*
+* function name: count7_8_9_10_11
+* description: counts tables 7-11
+* returns:
+* input: quantized spectrum
+* output: bitCount for tables 7-11
+*
+*****************************************************************************/
+
+static void count7_8_9_10_11(const Word16 *values,
+ const Word16 width,
+ Word16 *bitCount)
+{
+ Word32 t0,t1, i;
+ Word32 bc7_8,bc9_10;
+ Word16 bc11,sc;
+
+ bc7_8=0;
+ bc9_10=0;
+ bc11=0;
+ sc=0;
+
+ for(i=0;i<width;i+=2){
+
+ t0=ABS(values[i+0]);
+ t1=ABS(values[i+1]);
+
+ bc7_8 = bc7_8 + EXPAND(huff_ltab7_8[t0][t1]);
+ bc9_10 = bc9_10 + EXPAND(huff_ltab9_10[t0][t1]);
+ bc11 = bc11 + huff_ltab11[t0][t1];
+
+
+ sc = sc + (t0>0) + (t1>0);
+ }
+ bitCount[1]=INVALID_BITCOUNT;
+ bitCount[2]=INVALID_BITCOUNT;
+ bitCount[3]=INVALID_BITCOUNT;
+ bitCount[4]=INVALID_BITCOUNT;
+ bitCount[5]=INVALID_BITCOUNT;
+ bitCount[6]=INVALID_BITCOUNT;
+ bitCount[7]=extract_h(bc7_8) + sc;
+ bitCount[8]=extract_l(bc7_8) + sc;
+ bitCount[9]=extract_h(bc9_10) + sc;
+ bitCount[10]=extract_l(bc9_10) + sc;
+ bitCount[11]=bc11 + sc;
+
+}
+
+/*****************************************************************************
+*
+* function name: count9_10_11
+* description: counts tables 9-11
+* returns:
+* input: quantized spectrum
+* output: bitCount for tables 9-11
+*
+*****************************************************************************/
+static void count9_10_11(const Word16 *values,
+ const Word16 width,
+ Word16 *bitCount)
+{
+
+ Word32 t0,t1,i;
+ Word32 bc9_10;
+ Word16 bc11,sc;
+
+ bc9_10=0;
+ bc11=0;
+ sc=0;
+
+ for(i=0;i<width;i+=2){
+
+ t0=ABS(values[i+0]);
+ t1=ABS(values[i+1]);
+
+
+ bc9_10 += EXPAND(huff_ltab9_10[t0][t1]);
+ bc11 = bc11 + huff_ltab11[t0][t1];
+
+
+ sc = sc + (t0>0) + (t1>0);
+ }
+ bitCount[1]=INVALID_BITCOUNT;
+ bitCount[2]=INVALID_BITCOUNT;
+ bitCount[3]=INVALID_BITCOUNT;
+ bitCount[4]=INVALID_BITCOUNT;
+ bitCount[5]=INVALID_BITCOUNT;
+ bitCount[6]=INVALID_BITCOUNT;
+ bitCount[7]=INVALID_BITCOUNT;
+ bitCount[8]=INVALID_BITCOUNT;
+ bitCount[9]=extract_h(bc9_10) + sc;
+ bitCount[10]=extract_l(bc9_10) + sc;
+ bitCount[11]=bc11 + sc;
+
+}
+
+/*****************************************************************************
+*
+* function name: count11
+* description: counts table 11
+* returns:
+* input: quantized spectrum
+* output: bitCount for table 11
+*
+*****************************************************************************/
+ static void count11(const Word16 *values,
+ const Word16 width,
+ Word16 *bitCount)
+{
+ Word32 t0,t1,i;
+ Word16 bc11,sc;
+
+ bc11=0;
+ sc=0;
+ for(i=0;i<width;i+=2){
+ t0=ABS(values[i+0]);
+ t1=ABS(values[i+1]);
+ bc11 = bc11 + huff_ltab11[t0][t1];
+
+
+ sc = sc + (t0>0) + (t1>0);
+ }
+
+ bitCount[1]=INVALID_BITCOUNT;
+ bitCount[2]=INVALID_BITCOUNT;
+ bitCount[3]=INVALID_BITCOUNT;
+ bitCount[4]=INVALID_BITCOUNT;
+ bitCount[5]=INVALID_BITCOUNT;
+ bitCount[6]=INVALID_BITCOUNT;
+ bitCount[7]=INVALID_BITCOUNT;
+ bitCount[8]=INVALID_BITCOUNT;
+ bitCount[9]=INVALID_BITCOUNT;
+ bitCount[10]=INVALID_BITCOUNT;
+ bitCount[11]=bc11 + sc;
+}
+
+/*****************************************************************************
+*
+* function name: countEsc
+* description: counts table 11 (with Esc)
+* returns:
+* input: quantized spectrum
+* output: bitCount for tables 11 (with Esc)
+*
+*****************************************************************************/
+
+static void countEsc(const Word16 *values,
+ const Word16 width,
+ Word16 *bitCount)
+{
+ Word32 t0,t1,t00,t01,i;
+ Word16 bc11,ec,sc;
+
+ bc11=0;
+ sc=0;
+ ec=0;
+ for(i=0;i<width;i+=2){
+ t0=ABS(values[i+0]);
+ t1=ABS(values[i+1]);
+
+
+ sc = sc + (t0>0) + (t1>0);
+
+ t00 = min(t0,16);
+ t01 = min(t1,16);
+ bc11 = bc11 + huff_ltab11[t00][t01];
+
+
+ if(t0 >= 16){
+ ec = ec + 5;
+ while(sub(t0=(t0 >> 1), 16) >= 0) {
+ ec = ec + 2;
+ }
+ }
+
+
+ if(t1 >= 16){
+ ec = ec + 5;
+ while(sub(t1=(t1 >> 1), 16) >= 0) {
+ ec = ec + 2;
+ }
+ }
+ }
+ bitCount[1]=INVALID_BITCOUNT;
+ bitCount[2]=INVALID_BITCOUNT;
+ bitCount[3]=INVALID_BITCOUNT;
+ bitCount[4]=INVALID_BITCOUNT;
+ bitCount[5]=INVALID_BITCOUNT;
+ bitCount[6]=INVALID_BITCOUNT;
+ bitCount[7]=INVALID_BITCOUNT;
+ bitCount[8]=INVALID_BITCOUNT;
+ bitCount[9]=INVALID_BITCOUNT;
+ bitCount[10]=INVALID_BITCOUNT;
+ bitCount[11]=bc11 + sc + ec;
+}
+
+
+typedef void (*COUNT_FUNCTION)(const Word16 *values,
+ const Word16 width,
+ Word16 *bitCount);
+
+static COUNT_FUNCTION countFuncTable[CODE_BOOK_ESC_LAV+1] =
+ {
+
+ count1_2_3_4_5_6_7_8_9_10_11, /* 0 */
+ count1_2_3_4_5_6_7_8_9_10_11, /* 1 */
+ count3_4_5_6_7_8_9_10_11, /* 2 */
+ count5_6_7_8_9_10_11, /* 3 */
+ count5_6_7_8_9_10_11, /* 4 */
+ count7_8_9_10_11, /* 5 */
+ count7_8_9_10_11, /* 6 */
+ count7_8_9_10_11, /* 7 */
+ count9_10_11, /* 8 */
+ count9_10_11, /* 9 */
+ count9_10_11, /* 10 */
+ count9_10_11, /* 11 */
+ count9_10_11, /* 12 */
+ count11, /* 13 */
+ count11, /* 14 */
+ count11, /* 15 */
+ countEsc /* 16 */
+ };
+
+/*****************************************************************************
+*
+* function name: bitCount
+* description: count bits
+*
+*****************************************************************************/
+Word16 bitCount(const Word16 *values,
+ const Word16 width,
+ Word16 maxVal,
+ Word16 *bitCount)
+{
+ /*
+ check if we can use codebook 0
+ */
+
+ if(maxVal == 0)
+ bitCount[0] = 0;
+ else
+ bitCount[0] = INVALID_BITCOUNT;
+
+ maxVal = min(maxVal, CODE_BOOK_ESC_LAV);
+ countFuncTable[maxVal](values,width,bitCount);
+
+ return(0);
+}
+
+/*****************************************************************************
+*
+* function name: codeValues
+* description: write huffum bits
+*
+*****************************************************************************/
+Word16 codeValues(Word16 *values, Word16 width, Word16 codeBook, HANDLE_BIT_BUF hBitstream)
+{
+
+ Word32 i, t0, t1, t2, t3, t00, t01;
+ UWord16 codeWord, codeLength;
+ Word16 sign, signLength;
+
+
+ switch (codeBook) {
+ case CODE_BOOK_ZERO_NO:
+ break;
+
+ case CODE_BOOK_1_NO:
+ for(i=0; i<width; i+=4) {
+ t0 = values[i+0];
+ t1 = values[i+1];
+ t2 = values[i+2];
+ t3 = values[i+3];
+ codeWord = huff_ctab1[t0+1][t1+1][t2+1][t3+1];
+ codeLength = HI_LTAB(huff_ltab1_2[t0+1][t1+1][t2+1][t3+1]);
+ WriteBits(hBitstream, codeWord, codeLength);
+ }
+ break;
+
+ case CODE_BOOK_2_NO:
+ for(i=0; i<width; i+=4) {
+ t0 = values[i+0];
+ t1 = values[i+1];
+ t2 = values[i+2];
+ t3 = values[i+3];
+ codeWord = huff_ctab2[t0+1][t1+1][t2+1][t3+1];
+ codeLength = LO_LTAB(huff_ltab1_2[t0+1][t1+1][t2+1][t3+1]);
+ WriteBits(hBitstream,codeWord,codeLength);
+ }
+ break;
+
+ case CODE_BOOK_3_NO:
+ for(i=0; i<width; i+=4) {
+ sign=0;
+ signLength=0;
+ t0 = values[i+0];
+
+ if(t0 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t0 < 0){
+ sign|=1;
+ t0=-t0;
+ }
+ }
+ t1 = values[i+1];
+
+ if(t1 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t1 < 0){
+ sign|=1;
+ t1=-t1;
+ }
+ }
+ t2 = values[i+2];
+
+ if(t2 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t2 < 0){
+ sign|=1;
+ t2=-t2;
+ }
+ }
+ t3 = values[i+3];
+ if(t3 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t3 < 0){
+ sign|=1;
+ t3=-t3;
+ }
+ }
+
+ codeWord = huff_ctab3[t0][t1][t2][t3];
+ codeLength = HI_LTAB(huff_ltab3_4[t0][t1][t2][t3]);
+ WriteBits(hBitstream,codeWord,codeLength);
+ WriteBits(hBitstream,sign,signLength);
+ }
+ break;
+
+ case CODE_BOOK_4_NO:
+ for(i=0; i<width; i+=4) {
+ sign=0;
+ signLength=0;
+ t0 = values[i+0];
+
+ if(t0 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+ if(t0 < 0){
+ sign|=1;
+ t0=-t0;
+ }
+ }
+ t1 = values[i+1];
+
+ if(t1 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t1 < 0){
+ sign|=1;
+ t1=-t1;
+ }
+ }
+ t2 = values[i+2];
+
+ if(t2 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t2 < 0){
+ sign|=1;
+ t2=-t2;
+ }
+ }
+ t3 = values[i+3];
+
+ if(t3 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t3 < 0){
+ sign|=1;
+ t3=-t3;
+ }
+ }
+ codeWord = huff_ctab4[t0][t1][t2][t3];
+ codeLength = LO_LTAB(huff_ltab3_4[t0][t1][t2][t3]);
+ WriteBits(hBitstream,codeWord,codeLength);
+ WriteBits(hBitstream,sign,signLength);
+ }
+ break;
+
+ case CODE_BOOK_5_NO:
+ for(i=0; i<width; i+=2) {
+ t0 = values[i+0];
+ t1 = values[i+1];
+ codeWord = huff_ctab5[t0+4][t1+4];
+ codeLength = HI_LTAB(huff_ltab5_6[t0+4][t1+4]);
+ WriteBits(hBitstream,codeWord,codeLength);
+ }
+ break;
+
+ case CODE_BOOK_6_NO:
+ for(i=0; i<width; i+=2) {
+ t0 = values[i+0];
+ t1 = values[i+1];
+ codeWord = huff_ctab6[t0+4][t1+4];
+ codeLength = LO_LTAB(huff_ltab5_6[t0+4][t1+4]);
+ WriteBits(hBitstream,codeWord,codeLength);
+ }
+ break;
+
+ case CODE_BOOK_7_NO:
+ for(i=0; i<width; i+=2){
+ sign=0;
+ signLength=0;
+ t0 = values[i+0];
+
+ if(t0 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t0 < 0){
+ sign|=1;
+ t0=-t0;
+ }
+ }
+
+ t1 = values[i+1];
+
+ if(t1 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t1 < 0){
+ sign|=1;
+ t1=-t1;
+ }
+ }
+ codeWord = huff_ctab7[t0][t1];
+ codeLength = HI_LTAB(huff_ltab7_8[t0][t1]);
+ WriteBits(hBitstream,codeWord,codeLength);
+ WriteBits(hBitstream,sign,signLength);
+ }
+ break;
+
+ case CODE_BOOK_8_NO:
+ for(i=0; i<width; i+=2) {
+ sign=0;
+ signLength=0;
+ t0 = values[i+0];
+
+ if(t0 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t0 < 0){
+ sign|=1;
+ t0=-t0;
+ }
+ }
+
+ t1 = values[i+1];
+
+ if(t1 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t1 < 0){
+ sign|=1;
+ t1=-t1;
+ }
+ }
+ codeWord = huff_ctab8[t0][t1];
+ codeLength = LO_LTAB(huff_ltab7_8[t0][t1]);
+ WriteBits(hBitstream,codeWord,codeLength);
+ WriteBits(hBitstream,sign,signLength);
+ }
+ break;
+
+ case CODE_BOOK_9_NO:
+ for(i=0; i<width; i+=2) {
+ sign=0;
+ signLength=0;
+ t0 = values[i+0];
+
+ if(t0 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t0 < 0){
+ sign|=1;
+ t0=-t0;
+ }
+ }
+
+ t1 = values[i+1];
+
+ if(t1 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t1 < 0){
+ sign|=1;
+ t1=-t1;
+ }
+ }
+ codeWord = huff_ctab9[t0][t1];
+ codeLength = HI_LTAB(huff_ltab9_10[t0][t1]);
+ WriteBits(hBitstream,codeWord,codeLength);
+ WriteBits(hBitstream,sign,signLength);
+ }
+ break;
+
+ case CODE_BOOK_10_NO:
+ for(i=0; i<width; i+=2) {
+ sign=0;
+ signLength=0;
+ t0 = values[i+0];
+
+ if(t0 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t0 < 0){
+ sign|=1;
+ t0=-t0;
+ }
+ }
+
+ t1 = values[i+1];
+
+ if(t1 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t1 < 0){
+ sign|=1;
+ t1=-t1;
+ }
+ }
+ codeWord = huff_ctab10[t0][t1];
+ codeLength = LO_LTAB(huff_ltab9_10[t0][t1]);
+ WriteBits(hBitstream,codeWord,codeLength);
+ WriteBits(hBitstream,sign,signLength);
+ }
+ break;
+
+ case CODE_BOOK_ESC_NO:
+ for(i=0; i<width; i+=2) {
+ sign=0;
+ signLength=0;
+ t0 = values[i+0];
+
+ if(t0 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t0 < 0){
+ sign|=1;
+ t0=-t0;
+ }
+ }
+
+ t1 = values[i+1];
+
+ if(t1 != 0){
+ signLength = signLength + 1;
+ sign = sign << 1;
+
+ if(t1 < 0){
+ sign|=1;
+ t1=-t1;
+ }
+ }
+ t00 = min(t0,16);
+ t01 = min(t1,16);
+
+ codeWord = huff_ctab11[t00][t01];
+ codeLength = huff_ltab11[t00][t01];
+ WriteBits(hBitstream,codeWord,codeLength);
+ WriteBits(hBitstream,sign,signLength);
+
+ if(t0 >= 16){
+ Word16 n, p;
+ n=0;
+ p=t0;
+ while(sub(p=(p >> 1), 16) >= 0){
+
+ WriteBits(hBitstream,1,1);
+ n = n + 1;
+ }
+ WriteBits(hBitstream,0,1);
+ n = n + 4;
+ WriteBits(hBitstream,(t0 - (1 << n)),n);
+ }
+
+ if(t1 >= 16){
+ Word16 n, p;
+ n=0;
+ p=t1;
+ while(sub(p=(p >> 1), 16) >= 0){
+
+ WriteBits(hBitstream,1,1);
+ n = n + 1;
+ }
+ WriteBits(hBitstream,0,1);
+ n = n + 4;
+ WriteBits(hBitstream,(t1 - (1 << n)),n);
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+ return(0);
+}
+
+Word16 bitCountScalefactorDelta(Word16 delta)
+{
+ return(huff_ltabscf[delta+CODE_BOOK_SCF_LAV]);
+}
+
+Word16 codeScalefactorDelta(Word16 delta, HANDLE_BIT_BUF hBitstream)
+{
+ Word32 codeWord;
+ Word16 codeLength;
+
+
+ if(delta > CODE_BOOK_SCF_LAV || delta < -CODE_BOOK_SCF_LAV)
+ return(1);
+
+ codeWord = huff_ctabscf[delta + CODE_BOOK_SCF_LAV];
+ codeLength = huff_ltabscf[delta + CODE_BOOK_SCF_LAV];
+ WriteBits(hBitstream,codeWord,codeLength);
+ return(0);
+}
generated by cgit v1.1 at 2024-06-08 04:52:17 +0000