int process_metadata (WavpackContext *wpc, WavpackMetadata *wpmd)
{
WavpackStream *wps = &wpc->stream;
switch (wpmd->id) {
case ID_DUMMY:
return TRUE;
case ID_DECORR_TERMS:
return read_decorr_terms (wps, wpmd);
case ID_DECORR_WEIGHTS:
return read_decorr_weights (wps, wpmd);
case ID_DECORR_SAMPLES:
return read_decorr_samples (wps, wpmd);
case ID_ENTROPY_VARS:
return read_entropy_vars (wps, wpmd);
case ID_HYBRID_PROFILE:
return read_hybrid_profile (wps, wpmd);
case ID_FLOAT_INFO:
return read_float_info (wps, wpmd);
case ID_INT32_INFO:
return read_int32_info (wps, wpmd);
case ID_CHANNEL_INFO:
return read_channel_info (wpc, wpmd);
case ID_SAMPLE_RATE:
return read_sample_rate (wpc, wpmd);
case ID_CONFIG_BLOCK:
return read_config_info (wpc, wpmd);
case ID_WV_BITSTREAM:
return init_wv_bitstream (wpc, wpmd);
case ID_SHAPING_WEIGHTS:
case ID_WVC_BITSTREAM:
case ID_WVX_BITSTREAM:
return TRUE;
default:
return (wpmd->id & ID_OPTIONAL_DATA) ? TRUE : FALSE;
}
}
void write_entropy_vars (WavpackStream *wps, WavpackMetadata *wpmd)
{
uchar *byteptr;
int temp;
byteptr = (uchar *) wpmd->temp_data;
wpmd->data = wpmd->temp_data;
wpmd->id = ID_ENTROPY_VARS;
*byteptr++ = temp = mylog2 (wps->w.median [0] [0]);
*byteptr++ = temp >> 8;
*byteptr++ = temp = mylog2 (wps->w.median [1] [0]);
*byteptr++ = temp >> 8;
*byteptr++ = temp = mylog2 (wps->w.median [2] [0]);
*byteptr++ = temp >> 8;
wpmd->byte_length = byteptr - (uchar *) wpmd->data;
read_entropy_vars (wps, wpmd);
}
int process_metadata (WavpackContext *wpc, WavpackMetadata *wpmd)
{
WavpackStream *wps = wpc->streams [wpc->current_stream];
switch (wpmd->id) {
case ID_DUMMY:
return TRUE;
case ID_DECORR_TERMS:
return read_decorr_terms (wps, wpmd);
case ID_DECORR_WEIGHTS:
return read_decorr_weights (wps, wpmd);
case ID_DECORR_SAMPLES:
return read_decorr_samples (wps, wpmd);
case ID_ENTROPY_VARS:
return read_entropy_vars (wps, wpmd);
case ID_HYBRID_PROFILE:
return read_hybrid_profile (wps, wpmd);
case ID_SHAPING_WEIGHTS:
return read_shaping_info (wps, wpmd);
case ID_FLOAT_INFO:
return read_float_info (wps, wpmd);
case ID_INT32_INFO:
return read_int32_info (wps, wpmd);
case ID_CHANNEL_INFO:
return read_channel_info (wpc, wpmd);
case ID_CONFIG_BLOCK:
return read_config_info (wpc, wpmd);
case ID_WV_BITSTREAM:
return init_wv_bitstream (wps, wpmd);
case ID_WVC_BITSTREAM:
return init_wvc_bitstream (wps, wpmd);
case ID_WVX_BITSTREAM:
return init_wvx_bitstream (wps, wpmd);
case ID_RIFF_HEADER: case ID_RIFF_TRAILER:
return read_wrapper_data (wpc, wpmd);
case ID_MD5_CHECKSUM:
if (wpmd->byte_length == 16) {
memcpy (wpc->config.md5_checksum, wpmd->data, 16);
wpc->config.flags |= CONFIG_MD5_CHECKSUM;
wpc->config.md5_read = 1;
}
return TRUE;
default:
return (wpmd->id & ID_OPTIONAL_DATA) ? TRUE : FALSE;
}
}
