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Write header sample in FSB-IMA (now is byte-exact vs FMOD's tools)

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bnnm 2018-02-23 23:17:13 +01:00
parent 6eba6b7022
commit 3579858ef4
1 changed files with 20 additions and 10 deletions
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30
src/coding/ima_decoder.c
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@ -474,6 +474,7 @@ void decode_xbox_ima_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channel
samples_to_do -= 1;
}
/* decode nibbles (layout: all nibbles from one channel) */
for (i=first_sample; i < first_sample + samples_to_do; i++) {
off_t byte_offset = (stream->offset + 0x24*num_frame + 0x4) + (i-1)/2;
int nibble_shift = ((i-1)&1?4:0); /* low nibble first */
@ -510,6 +511,7 @@ void decode_nds_ima(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspaci
if (step_index > 88) step_index=88;
}
/* decode nibbles (layout: all nibbles from the channel) */
for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
off_t byte_offset = stream->offset + 0x04 + i/2;
int nibble_shift = (i&1?4:0); /* low nibble first */
@ -651,7 +653,7 @@ void decode_apple_ima4(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelsp
/* XBOX-IMA with modified data layout */
void decode_fsb_ima(VGMSTREAM * vgmstream, VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do,int channel) {
int i, sample_count;
int i, sample_count = 0;
int32_t hist1 = stream->adpcm_history1_32;
int step_index = stream->adpcm_step_index;
@ -669,17 +671,24 @@ void decode_fsb_ima(VGMSTREAM * vgmstream, VGMSTREAMCHANNEL * stream, sample * o
if (step_index < 0) step_index=0;
if (step_index > 88) step_index=88;
//todo/* write header sample (even samples per block, skips last nibble) */
/* write header sample (even samples per block, skips last nibble) */
outbuf[sample_count] = (short)(hist1);
sample_count += channelspacing;
first_sample += 1;
samples_to_do -= 1;
}
/* decode nibbles (layout: 2 bytes/2*2 nibbles per channel) */
for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
off_t byte_offset = stream->offset + 0x04*vgmstream->channels + 0x02*channel + i/4*2*vgmstream->channels + (i%4)/2;
int nibble_shift = (i&1?4:0); /* low nibble first */
for (i = first_sample; i < first_sample + samples_to_do; i++) {
off_t byte_offset = stream->offset + 0x04*vgmstream->channels + 0x02*channel + (i-1)/4*2*vgmstream->channels + ((i-1)%4)/2;
int nibble_shift = ((i-1)&1?4:0); /* low nibble first */
//todo/* must skip last nibble per official decoder, probably not needed though */
std_ima_expand_nibble(stream, byte_offset,nibble_shift, &hist1, &step_index);
outbuf[sample_count] = (short)(hist1);
/* must skip last nibble per official decoder, probably not needed though */
if (i < block_samples) {
std_ima_expand_nibble(stream, byte_offset,nibble_shift, &hist1, &step_index);
outbuf[sample_count] = (short)(hist1);
sample_count += channelspacing;
}
}
/* internal interleave: increment offset on complete frame */
@ -719,9 +728,10 @@ void decode_wwise_ima(VGMSTREAM * vgmstream, VGMSTREAMCHANNEL * stream, sample *
samples_to_do -= 1;
}
for (i=first_sample; i < first_sample + samples_to_do; i++) { /* first_sample + samples_to_do should be block_samples at most */
/* decode nibbles (layout: all nibbles from one channel) */
for (i = first_sample; i < first_sample + samples_to_do; i++) {
off_t byte_offset = (stream->offset + 0x24*num_frame + 0x4) + (i-1)/2;
int nibble_shift = ((i-1)&1?4:0); //low nibble first
int nibble_shift = ((i-1)&1?4:0); /* low nibble first */
/* must skip last nibble like other XBOX-IMAs, often needed (ex. Bayonetta 2 sfx) */
if (i < block_samples) {