32 lines
805 B
C
32 lines
805 B
C
typedef short int int16_t;
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typedef unsigned char uint8_t;
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typedef struct {
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int16_t LARc[8];
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int16_t Nc[4];
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int16_t bc[4];
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int16_t Mc[4];
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int16_t xmaxc[4];
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int16_t xMc[4][13];
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} gsm0610_frame_t;
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int gsm0610_unpack_voip(gsm0610_frame_t * s, const uint8_t c[33])
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{
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int i;
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for (i = 0; i < 4; i++) {
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s->Nc[i] = (*c >> 1) & 0x7F;
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s->bc[i] = (*c++ & 0x1) << 1;
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s->bc[i] |= (*c >> 7) & 0x1;
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s->Mc[i] = (*c >> 5) & 0x3;
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s->xmaxc[i] = (*c++ & 0x1F) << 1;
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s->xmaxc[i] |= (*c >> 7) & 0x1;
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s->xMc[i][0] = (*c >> 4) & 0x7;
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s->xMc[i][1] = (*c >> 1) & 0x7;
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s->xMc[i][2] = (*c++ & 0x1) << 2;
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s->xMc[i][2] |= (*c >> 6) & 0x3;
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s->xMc[i][3] = (*c >> 3) & 0x7;
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s->xMc[i][4] = *c++ & 0x7;
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s->xMc[i][10] |= (*c >> 6) & 0x3;
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s->xMc[i][11] = (*c >> 3) & 0x7;
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s->xMc[i][12] = *c++ & 0x7;
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}
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}
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