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Fixed bug when seeking in Wwise IMAs

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This commit is contained in:
bnnm 2017-04-13 16:55:40 +02:00
parent 61c66182a1
commit 34999ddec9
1 changed files with 3 additions and 3 deletions
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6
src/coding/ima_decoder.c
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@ -630,10 +630,10 @@ void decode_wwise_ima(VGMSTREAM * vgmstream,VGMSTREAMCHANNEL * stream, sample *
outbuf[sample_count] = (short)(hist1);
sample_count += channelspacing;
first_sample += 1;
samples_to_do -= 1;
}
// todo seek bug when landing in odd samples; i-1 doesn't seem to help
for (i=first_sample; i < samples_to_do; i++) { /* samples_to_do should be block_samples at most */
for (i=first_sample; i < first_sample + samples_to_do; i++) { /* first_sample + samples_to_do should be block_samples at most */
off_t byte_offset = stream->offset + (vgmstream->interleave_block_size / vgmstream->channels)*channel + 4 + (i-1)/2;
int nibble_shift = ((i-1)&1?4:0); //low nibble first
@ -642,7 +642,7 @@ void decode_wwise_ima(VGMSTREAM * vgmstream,VGMSTREAMCHANNEL * stream, sample *
ms_ima_expand_nibble(stream, byte_offset,nibble_shift, &hist1, &step_index);
outbuf[sample_count] = (short)(hist1);
sample_count+=channelspacing;
//todo atenuation: apparently from hcs's analysis Wwise IMA decodes nibble slightly different slightly reducing noise
//todo atenuation: apparently from hcs's analysis Wwise IMA decodes nibbles slightly different, reducing dbs
}
}