_AFmoduleinst _af_ms_adpcm_init_decompress (_Track *track, AFvirtualfile *fh,
bool seekok, bool headerless, AFframecount *chunkframes)
{
_AFmoduleinst ret = _AFnewmodinst(&ms_adpcm_decompress);
ms_adpcm_data *d;
AUpvlist pv;
long l;
void *v;
assert(af_ftell(fh) == track->fpos_first_frame);
d = (ms_adpcm_data *) _af_malloc(sizeof (ms_adpcm_data));
d->track = track;
d->fh = fh;
d->track->frames2ignore = 0;
d->track->fpos_next_frame = d->track->fpos_first_frame;
pv = d->track->f.compressionParams;
if (_af_pv_getlong(pv, _AF_MS_ADPCM_NUM_COEFFICIENTS, &l))
d->numCoefficients = l;
else
_af_error(AF_BAD_CODEC_CONFIG, "number of coefficients not set");
if (_af_pv_getptr(pv, _AF_MS_ADPCM_COEFFICIENTS, &v))
memcpy(d->coefficients, v, sizeof (int16_t) * 256 * 2);
else
_af_error(AF_BAD_CODEC_CONFIG, "coefficient array not set");
if (_af_pv_getlong(pv, _AF_FRAMES_PER_BLOCK, &l))
d->framesPerBlock = l;
else
_af_error(AF_BAD_CODEC_CONFIG, "samples per block not set");
if (_af_pv_getlong(pv, _AF_BLOCK_SIZE, &l))
d->blockAlign = l;
else
_af_error(AF_BAD_CODEC_CONFIG, "block size not set");
*chunkframes = d->framesPerBlock;
ret.modspec = d;
return ret;
}
_AFmoduleinst _af_ima_adpcm_init_decompress (_Track *track, AFvirtualfile *fh,
bool seekok, bool headerless, AFframecount *chunkframes)
{
_AFmoduleinst ret = _AFnewmodinst(&ima_adpcm_decompress);
ima_adpcm_data *d;
AUpvlist pv;
int i;
long l;
void *v;
assert(af_ftell(fh) == track->fpos_first_frame);
d = (ima_adpcm_data *) _af_malloc(sizeof (ima_adpcm_data));
d->track = track;
d->fh = fh;
d->track->frames2ignore = 0;
d->track->fpos_next_frame = d->track->fpos_first_frame;
pv = d->track->f.compressionParams;
if (_af_pv_getlong(pv, _AF_SAMPLES_PER_BLOCK, &l))
d->samplesPerBlock = l;
else
_af_error(AF_BAD_CODEC_CONFIG, "samples per block not set");
if (_af_pv_getlong(pv, _AF_BLOCK_SIZE, &l))
d->blockAlign = l;
else
_af_error(AF_BAD_CODEC_CONFIG, "block size not set");
*chunkframes = d->samplesPerBlock / d->track->f.channelCount;
ret.modspec = d;
return ret;
}
