Lines Matching refs:idelta
293 bias = c->idelta / 2; in adpcm_ms_compress_sample()
295 bias = -c->idelta / 2; in adpcm_ms_compress_sample()
297 nibble = (nibble + bias) / c->idelta; in adpcm_ms_compress_sample()
300 predictor += ((nibble & 0x08) ? (nibble - 0x10) : nibble) * c->idelta; in adpcm_ms_compress_sample()
305 c->idelta = (ff_adpcm_AdaptationTable[nibble] * c->idelta) >> 8; in adpcm_ms_compress_sample()
306 if (c->idelta < 16) in adpcm_ms_compress_sample()
307 c->idelta = 16; in adpcm_ms_compress_sample()
364 nodes[0]->step = c->idelta; in adpcm_compress_trellis()
538 c->idelta = nodes[0]->step; in adpcm_compress_trellis()
772 if (c->status[i].idelta < 16) in adpcm_encode_frame()
773 c->status[i].idelta = 16; in adpcm_encode_frame()
774 bytestream_put_le16(&dst, c->status[i].idelta); in adpcm_encode_frame()