g726_8cpp-source.html

Tixys source code, include G.711, G.726, IMA-ADPCM etc.

<a name="l00944"></a><a class="code" href="group__g726__section4B.html#ga3">00944</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga3">G726::QuantizerScaleFactorAdaptation1</a>(uint AL,uint&amp; Y)
00945     {
00946     <a class="code" href="group__g726__section4.html#ga12">MIX</a>(AL,YU,YL,Y);
00947     }
<a name="l00951"></a><a class="code" href="group__g726__section4B.html#ga4">00951</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga4">G726::QuantizerScaleFactorAdaptation2</a>(uint I,uint Y)
00952     {
00953     <span class="keywordtype">int</span> WI;
00954     <a class="code" href="group__g726__section4.html#ga10">FUNCTW</a>(RATE,I,WI);
00955 
00956     <a class="code" href="group__integers.html#ga6">uint</a> YUT;
00957     <a class="code" href="group__g726__section4.html#ga8">FILTD</a>(WI,Y,YUT);
00958 
00959     <a class="code" href="group__integers.html#ga6">uint</a> YUP;
00960     <a class="code" href="group__g726__section4.html#ga11">LIMB</a>(YUT,YUP);
00961 
00962     <a class="code" href="group__integers.html#ga6">uint</a> YLP;
00963     <a class="code" href="group__g726__section4.html#ga9">FILTE</a>(YUP,YL,YLP);
00964 
00965     YU = YUP; <span class="comment">// Delay</span>
00966     YL = YLP; <span class="comment">// Delay</span>
00967     }
00968 
00969 
<a name="l00973"></a><a class="code" href="group__g726__section4B.html#ga5">00973</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga5">G726::AdaptationSpeedControl1</a>(uint&amp; AL)
00974     {
00975     <a class="code" href="group__g726__section4.html#ga17">LIMA</a>(AP,AL);
00976     }
<a name="l00980"></a><a class="code" href="group__g726__section4B.html#ga6">00980</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga6">G726::AdaptationSpeedControl2</a>(uint I,uint Y,uint TDP,uint TR)
00981     {
00982     <a class="code" href="group__integers.html#ga6">uint</a> FI;
00983     <a class="code" href="group__g726__section4.html#ga16">FUNCTF</a>(RATE,I,FI);
00984 
00985     <a class="code" href="group__g726__section4.html#ga13">FILTA</a>(FI,DMS,DMS); <span class="comment">// Result 'DMSP' straight to delay storage 'DMS'</span>
00986     <a class="code" href="group__g726__section4.html#ga14">FILTB</a>(FI,DML,DML); <span class="comment">// Result 'DMSP' straight to delay storage 'DMS'</span>
00987 
00988     <a class="code" href="group__integers.html#ga6">uint</a> AX;
00989     <a class="code" href="group__g726__section4.html#ga18">SUBTC</a>(DMS,DML,TDP,Y,AX); <span class="comment">// DMSP and DMLP are read from delay storage 'DMS' and 'DML'</span>
00990 
00991     <a class="code" href="group__integers.html#ga6">uint</a> APP;
00992     <a class="code" href="group__g726__section4.html#ga15">FILTC</a>(AX,AP,APP);
00993 
00994     <a class="code" href="group__g726__section4.html#ga19">TRIGA</a>(TR,APP,AP); <span class="comment">// Result 'APR' straight to delay storage 'AP'</span>
00995     }
00996 
00997 
<a name="l01001"></a><a class="code" href="group__g726__section4B.html#ga7">01001</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga7">G726::AdaptativePredictorAndReconstructedSignalCalculator1</a>(<span class="keywordtype">int</span>&amp; SE,<span class="keywordtype">int</span>&amp; SEZ)
01002     {
01003     <span class="keywordtype">int</span> WBn[6];
01004     <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i&lt;6; i++)
01005         <a class="code" href="group__g726__section4.html#ga26">FMULT</a>(Bn[i],DQn[i],WBn[i]);
01006     <span class="keywordtype">int</span> WAn[2];
01007     <a class="code" href="group__g726__section4.html#ga26">FMULT</a>(A1,SR1,WAn[0]);
01008     <a class="code" href="group__g726__section4.html#ga26">FMULT</a>(A2,SR2,WAn[1]);
01009     <a class="code" href="group__g726__section4.html#ga20">ACCUM</a>(WAn,WBn,SE,SEZ);
01010     }
<a name="l01014"></a><a class="code" href="group__g726__section4B.html#ga8">01014</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga8">G726::AdaptativePredictorAndReconstructedSignalCalculator2</a>(uint DQ,uint TR,<span class="keywordtype">int</span> SE,<span class="keywordtype">int</span> SEZ,<span class="keywordtype">int</span>&amp; SR,<span class="keywordtype">int</span>&amp; A2P)
01015     {
01016     <span class="keywordtype">int</span> PK0;
01017     <a class="code" href="group__integers.html#ga6">uint</a> SIGPK;
01018     <a class="code" href="group__g726__section4.html#ga22">ADDC</a>(DQ,SEZ,PK0,SIGPK);
01019 
01020     <a class="code" href="group__g726__section4.html#ga21">ADDB</a>(DQ,SE,SR);
01021     SR2 = SR1; <span class="comment">// Delay</span>
01022     <a class="code" href="group__g726__section4.html#ga25">FLOATB</a>(SR,SR1);  <span class="comment">// Result 'SR0' straight to delay storage 'SR1'</span>
01023 
01024     <a class="code" href="group__integers.html#ga6">uint</a> DQ0;
01025     <a class="code" href="group__g726__section4.html#ga24">FLOATA</a>(DQ,DQ0);
01026 
01027     <span class="keywordtype">int</span> i;
01028     <span class="keywordflow">for</span>(i=0; i&lt;6; i++)
01029         {
01030         <span class="keywordtype">int</span> Un;
01031         <a class="code" href="group__g726__section4.html#ga33">XOR</a>(DQn[i],DQ,Un);
01032         <span class="keywordtype">int</span> BnP;
01033         <a class="code" href="group__g726__section4.html#ga32">UPB</a>(RATE,Un,Bn[i],DQ,BnP);
01034         <a class="code" href="group__g726__section4.html#ga29">TRIGB</a>(TR,BnP,Bn[i]); <span class="comment">// Result 'BnR' straight to delay storage 'Bn'</span>
01035         }
01036 
01037     <span class="keywordtype">int</span> A2T;
01038     <a class="code" href="group__g726__section4.html#ga31">UPA2</a>(PK0,PK1,PK2,A1,A2,SIGPK,A2T);
01039     <a class="code" href="group__g726__section4.html#ga27">LIMC</a>(A2T,A2P);
01040     <a class="code" href="group__g726__section4.html#ga29">TRIGB</a>(TR,A2P,A2); <span class="comment">// Result 'A2R' straight to delay storage 'A2'</span>
01041 
01042     <span class="keywordtype">int</span> A1T;
01043     <a class="code" href="group__g726__section4.html#ga30">UPA1</a>(PK0,PK1,A1,SIGPK,A1T);
01044     <span class="keywordtype">int</span> A1P;
01045     <a class="code" href="group__g726__section4.html#ga28">LIMD</a>(A1T,A2P,A1P);
01046     <a class="code" href="group__g726__section4.html#ga29">TRIGB</a>(TR,A1P,A1); <span class="comment">// Result 'A1R' straight to delay storage 'A1'</span>
01047 
01048     PK2 = PK1; <span class="comment">// Delay</span>
01049     PK1 = PK0; <span class="comment">// Delay</span>
01050 
01051     <span class="keywordflow">for</span>(i=5; i&gt;0; i--)
01052         DQn[i] = DQn[i-1]; <span class="comment">// Delay</span>
01053     DQn[0] = DQ0; <span class="comment">// Delay</span>
01054     }
01055 
01056 
<a name="l01060"></a><a class="code" href="group__g726__section4B.html#ga9">01060</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga9">G726::ToneAndTransitionDetector1</a>(uint DQ,uint&amp; TR)
01061     {
01062     <a class="code" href="group__g726__section4.html#ga35">TRANS</a>(TD,YL,DQ,TR);
01063     }
<a name="l01067"></a><a class="code" href="group__g726__section4B.html#ga10">01067</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga10">G726::ToneAndTransitionDetector2</a>(<span class="keywordtype">int</span> A2P,uint TR,uint&amp; TDP)
01068     {
01069     <a class="code" href="group__g726__section4.html#ga34">TONE</a>(A2P,TDP);
01070     <a class="code" href="group__g726__section4.html#ga29">TRIGB</a>(TR,TDP,(<span class="keywordtype">int</span>&amp;)TD);  <span class="comment">// Result 'TDR' straight to delay storage 'TD'</span>
01071     }
01072 
01073 
<a name="l01077"></a><a class="code" href="group__g726__section4B.html#ga11">01077</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga11">G726::OutputPCMFormatConversionAndSynchronousCodingAdjustment</a>(<span class="keywordtype">int</span> SR,<span class="keywordtype">int</span> SE,uint Y,uint I,uint&amp; SD)
01078     {
01079     <a class="code" href="group__integers.html#ga6">uint</a> SP;
01080     <a class="code" href="group__g726__section4.html#ga36">COMPRESS</a>(SR,LAW,SP);
01081     <span class="keywordtype">int</span> SLX;
01082     <a class="code" href="group__g726__section4.html#ga0">EXPAND</a>(SP,LAW,SLX);
01083     <span class="keywordtype">int</span> DX;
01084     <a class="code" href="group__g726__section4.html#ga1">SUBTA</a>(SLX,SE,DX);
01085     <a class="code" href="group__integers.html#ga6">uint</a> DLX;
01086     <span class="keywordtype">int</span> DSX;
01087     <a class="code" href="group__g726__section4.html#ga2">LOG</a>(DX,DLX,DSX);
01088     <span class="keywordtype">int</span> DLNX;
01089     <a class="code" href="group__g726__section4.html#ga4">SUBTB</a>(DLX,Y,DLNX);
01090     <a class="code" href="group__g726__section4.html#ga37">SYNC</a>(RATE,I,SP,DLNX,DSX,LAW,SD);
01091     }
01092 
01093 
<a name="l01097"></a><a class="code" href="group__g726__section4B.html#ga12">01097</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga12">G726::DifferenceSignalComputation</a>(<span class="keywordtype">int</span> SL,<span class="keywordtype">int</span> SE,<span class="keywordtype">int</span>&amp; D)
01098     {
01099     <a class="code" href="group__g726__section4.html#ga1">SUBTA</a>(SL,SE,D);
01100     }
01101 
01102 
<a name="l01106"></a><a class="code" href="group__g726__section4B.html#ga13">01106</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__g726__section4B.html#ga13">G726::OutputLimiting</a>(<span class="keywordtype">int</span> SR,<span class="keywordtype">int</span>&amp; SO)
01107     {
01108     <a class="code" href="group__g726__section4.html#ga38">LIMO</a>(SR,SO);
01109     }
01110 
01111  <span class="comment">// End of group</span>
01113 
01114 
<a name="l01123"></a><a class="code" href="classG726.html#d14">01123</a> <a class="code" href="group__integers.html#ga6">uint</a> <a class="code" href="classG726.html#d14">G726::EncodeDecode</a>(uint input,<span class="keywordtype">bool</span> encode)
01124     {
01125     <a class="code" href="group__integers.html#ga6">uint</a> AL;
01126     <a class="code" href="group__g726__section4B.html#ga5">AdaptationSpeedControl1</a>(AL);
01127     <a class="code" href="group__integers.html#ga6">uint</a> Y;
01128     <a class="code" href="group__g726__section4B.html#ga3">QuantizerScaleFactorAdaptation1</a>(AL,Y);
01129     <span class="keywordtype">int</span> SE;
01130     <span class="keywordtype">int</span> SEZ;
01131     <a class="code" href="group__g726__section4B.html#ga7">AdaptativePredictorAndReconstructedSignalCalculator1</a>(SE,SEZ);
01132 
01133     <a class="code" href="group__integers.html#ga6">uint</a> I;
01134     <span class="keywordflow">if</span>(encode)
01135         {
01136         <span class="keywordtype">int</span> D;
01137         <span class="keywordflow">if</span>(LAW==<a class="code" href="classG726.html#w7w2">G726::PCM16</a>)
01138             {
01139             <span class="keywordtype">int</span> SL = (<a class="code" href="group__integers.html#ga4">int16</a>)input;
01140             SL &gt;&gt;= 2; <span class="comment">// Convert input from 16bit to 14bit</span>
01141             <a class="code" href="group__g726__section4B.html#ga12">DifferenceSignalComputation</a>(SL,SE,D);
01142             }
01143         <span class="keywordflow">else</span>
01144             <a class="code" href="group__g726__section4B.html#ga0">InputPCMFormatConversionAndDifferenceSignalComputation</a>(input,SE,D);
01145         <a class="code" href="group__g726__section4B.html#ga1">AdaptiveQuantizer</a>(D,Y,I);
01146         }
01147     <span class="keywordflow">else</span>
01148         I = input;
01149 
01150     <a class="code" href="group__integers.html#ga6">uint</a> DQ;
01151     <a class="code" href="group__g726__section4B.html#ga2">InverseAdaptiveQuantizer</a>(I,Y,DQ);
01152     <a class="code" href="group__integers.html#ga6">uint</a> TR;
01153     <a class="code" href="group__g726__section4B.html#ga9">ToneAndTransitionDetector1</a>(DQ,TR);
01154     <span class="keywordtype">int</span> SR;
01155     <span class="keywordtype">int</span> A2P;
01156     <a class="code" href="group__g726__section4B.html#ga8">AdaptativePredictorAndReconstructedSignalCalculator2</a>(DQ,TR,SE,SEZ,SR,A2P);
01157     <a class="code" href="group__integers.html#ga6">uint</a> TDP;
01158     <a class="code" href="group__g726__section4B.html#ga10">ToneAndTransitionDetector2</a>(A2P,TR,TDP);
01159     <a class="code" href="group__g726__section4B.html#ga6">AdaptationSpeedControl2</a>(I,Y,TDP,TR);
01160     <a class="code" href="group__g726__section4B.html#ga4">QuantizerScaleFactorAdaptation2</a>(I,Y);
01161 
01162     <span class="keywordflow">if</span>(encode)
01163         <span class="keywordflow">return</span> I;
01164 
01165     <span class="keywordflow">if</span>(LAW==<a class="code" href="classG726.html#w7w2">G726::PCM16</a>)
01166         {
011