ghy

Alejandro Acuña

2025-03-12 26319e4c5bfbee722c15b8e7ccca9b6127bb1cb8

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
// FIRTransformer.cpp: implementation of the FIRTransformer class.
//
//////////////////////////////////////////////////////////////////////
 
#include "AudioSample.h"
#include "AudioSampleManager.h"
#include "DSP/FIRFilter.h"
#include "FIRTransformer.h"
 
using namespace std;
 
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
 
FIRTransformer::FIRTransformer()
{
    char subFacilityName[100];
    sprintf(subFacilityName, "FIRTransformer:%x", this);
    tracer.SetSubFacilityName(subFacilityName);
    SetTraceLevel();
    firFilter = NULL;
}
 
FIRTransformer::~FIRTransformer()
{
    if (firFilter)
    {
        switch(this->sampleSize)
        {
        case 8:
                delete (FIRFilter<char>*)firFilter;
                break;
        case 16:
                delete (FIRFilter<short>*)firFilter;
                break;
        case 32:
                delete (FIRFilter<long>*)firFilter;
                break;
        default:
                break;
        }
        firFilter = NULL;
    }
}
 
int
FIRTransformer::SetTraceLevel()
{
    long SystemMask = 0;
    if ((SystemMask = GetRegKeyLong(HKEY_CURRENT_USER, "Software\\Cisco Systems\\MTC\\Tracing", "AllComponents", 0x0)) == 0)
    {
        SystemMask = GetRegKeyLong(HKEY_CURRENT_USER, "Software\\Cisco Systems\\MTC\\Tracing", "FIRTransformer", 0x100000);
    }
    tracer.SetSystemMask(SystemMask);
    return 0;
}
 
int
FIRTransformer::SetCoefficients(double *coeffs, int numCoeffs, int sampleSize)
{
    int result = 0;
    if (firFilter)
    {
        switch(this->sampleSize)
        {
        case 8:
                delete (FIRFilter<char>*)firFilter;
                break;
        case 16:
                delete (FIRFilter<short>*)firFilter;
                break;
        case 32:
                delete (FIRFilter<long>*)firFilter;
                break;
        default:
                break;
        }
        firFilter = NULL;
    }
    switch(sampleSize)
    {
    case 8:
        firFilter = new FIRFilter<char>(coeffs, numCoeffs);
        break;
    case 16:
        firFilter = new FIRFilter<short>(coeffs, numCoeffs);
        break;
    case 32:
        firFilter = new FIRFilter<long>(coeffs, numCoeffs);
        break;
    default:
        result = -10;
        break;
    }
    this->sampleSize = sampleSize;
    return 0;
}
 
int
FIRTransformer::TransformAudioSamples(std::vector<std::pair<AudioSample *, AudioSource *> > &data, AudioSample **ppAudioSample)
{
    tracer.tracef(DET, "TransformAudioSamples\n");
    AudioSample *inSample = NULL;
    if (data.size() > 0)
    {
        inSample = data[0].first;
    }
    AudioSample *outSample;
    int result = 0;
    if (!inSample)
    {
        outSample = NULL;
    }
    else
    {
        tracer.tracef(DET, "TransformAudioSamples : inSample : minFrameDuration %d, dataSize %d, silenceDuration %d\n", inSample->MinFrameDuration(), inSample->DataSize(), inSample->GetSilenceDuration());
        if (inSample->DataSize() <= 0)
        {
            inSample->AddRef(this);
            (*ppAudioSample) = inSample;
        }
        else
        {
            result = AudioSampleManager::GetInstance()->GetAudioSample(&outSample, this);
            *ppAudioSample = outSample;
            WAVEFORMATEX sampleFormat;
            inSample->GetFormat(&sampleFormat);
            outSample->SetFormat(sampleFormat);
            outSample->SetDataSize(inSample->DataSize());
            tracer.tracef(DET, "TransformAudioSamples : sampleFormat.wBitsPerSample %d\n", sampleFormat.wBitsPerSample);
            int numSamples = (inSample->DataSize() * 8) / sampleFormat.wBitsPerSample;
            
            switch(sampleSize)
            {
            case 8:
                result = ((FIRFilter<char> *)firFilter)->DoFIR((void *)(inSample->Data()), (void *)(outSample->Data()), numSamples);
                break;
            case 16:
                result = ((FIRFilter<short> *)firFilter)->DoFIR((void *)(inSample->Data()), (void *)(outSample->Data()), numSamples);
                break;
            case 32:
                result = ((FIRFilter<long> *)firFilter)->DoFIR((void *)(inSample->Data()), (void *)(outSample->Data()), numSamples);
                break;
            default:
                result = -20;
                break;
            }
        }
    }
    tracer.tracef(DET, "~TransformAudioSamples : returning %d\n", result);
    return result;
}