Lines Matching defs:band
74 static inline void s_zero(int cur_diff, struct G722Band *band)
80 band->zero_mem[k] = ((band->zero_mem[k] * 255) >> 8) + \
81 d*((band->diff_mem[k]^cur_diff) < 0 ? -128 : 128); \
82 band->diff_mem[k] = tmp; \
83 s_zero += (tmp * band->zero_mem[k]) >> 15; \
86 ACCUM(5, band->diff_mem[4], 1);
87 ACCUM(4, band->diff_mem[3], 1);
88 ACCUM(3, band->diff_mem[2], 1);
89 ACCUM(2, band->diff_mem[1], 1);
90 ACCUM(1, band->diff_mem[0], 1);
93 ACCUM(5, band->diff_mem[4], 0);
94 ACCUM(4, band->diff_mem[3], 0);
95 ACCUM(3, band->diff_mem[2], 0);
96 ACCUM(2, band->diff_mem[1], 0);
97 ACCUM(1, band->diff_mem[0], 0);
101 band->s_zero = s_zero;
110 static void do_adaptive_prediction(struct G722Band *band, const int cur_diff)
114 const int cur_part_reconst = band->s_zero + cur_diff < 0;
116 sg[0] = sign_lookup[cur_part_reconst != band->part_reconst_mem[0]];
117 sg[1] = sign_lookup[cur_part_reconst == band->part_reconst_mem[1]];
118 band->part_reconst_mem[1] = band->part_reconst_mem[0];
119 band->part_reconst_mem[0] = cur_part_reconst;
121 band->pole_mem[1] = av_clip((sg[0] * av_clip(band->pole_mem[0], -8191, 8191) >> 5) +
122 (sg[1] * 128) + (band->pole_mem[1] * 127 >> 7), -12288, 12288);
124 limit = 15360 - band->pole_mem[1];
125 band->pole_mem[0] = av_clip(-192 * sg[0] + (band->pole_mem[0] * 255 >> 8), -limit, limit);
127 s_zero(cur_diff, band);
129 cur_qtzd_reconst = av_clip_int16((band->s_predictor + cur_diff) * 2);
130 band->s_predictor = av_clip_int16(band->s_zero +
131 (band->pole_mem[0] * cur_qtzd_reconst >> 15) +
132 (band->pole_mem[1] * band->prev_qtzd_reconst >> 15));
133 band->prev_qtzd_reconst = cur_qtzd_reconst;
143 void ff_g722_update_low_predictor(struct G722Band *band, const int ilow)
145 do_adaptive_prediction(band,
146 band->scale_factor * ff_g722_low_inv_quant4[ilow] >> 10);
149 band->log_factor = av_clip((band->log_factor * 127 >> 7) +
151 band->scale_factor = linear_scale_factor(band->log_factor - (8 << 11));
154 void ff_g722_update_high_predictor(struct G722Band *band, const int dhigh,
157 do_adaptive_prediction(band, dhigh);
160 band->log_factor = av_clip((band->log_factor * 127 >> 7) +
162 band->scale_factor = linear_scale_factor(band->log_factor - (10 << 11));