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typedef short int int16_t;

typedef unsigned char uint8_t;

typedef struct {

        int16_t LARc[8];

        int16_t Nc[4];

        int16_t bc[4];

        int16_t Mc[4];

        int16_t xmaxc[4];

        int16_t xMc[4][13];

} gsm0610_frame_t;

int gsm0610_unpack_voip(gsm0610_frame_t * s, const uint8_t c[33])

{

        int i;

        for (i = 0; i < 4; i++) {

                s->Nc[i] = (*c >> 1) & 0x7F;

                s->bc[i] = (*c++ & 0x1) << 1;

                s->bc[i] |= (*c >> 7) & 0x1;

                s->Mc[i] = (*c >> 5) & 0x3;

                s->xmaxc[i] = (*c++ & 0x1F) << 1;

                s->xmaxc[i] |= (*c >> 7) & 0x1;

                s->xMc[i][0] = (*c >> 4) & 0x7;

                s->xMc[i][1] = (*c >> 1) & 0x7;

                s->xMc[i][2] = (*c++ & 0x1) << 2;

                s->xMc[i][2] |= (*c >> 6) & 0x3;

                s->xMc[i][3] = (*c >> 3) & 0x7;

                s->xMc[i][4] = *c++ & 0x7;

                s->xMc[i][10] |= (*c >> 6) & 0x3;

                s->xMc[i][11] = (*c >> 3) & 0x7;

                s->xMc[i][12] = *c++ & 0x7;

        }

}