adpcm_ima_qt_compress_sample  560 libavcodec/adpcmenc.c                     t1 = adpcm_ima_qt_compress_sample(status, samples_p[ch][i    ]);
adpcm_ima_qt_compress_sample  561 libavcodec/adpcmenc.c                     t2 = adpcm_ima_qt_compress_sample(status, samples_p[ch][i + 1]);