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Fix looping for XACT1/2 PCM and XMA

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This commit is contained in:
bnnm 2017-02-25 19:53:21 +01:00
parent d2a31378c2
commit f92babb383
1 changed files with 42 additions and 19 deletions
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61
src/meta/xwb.c
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@ -128,8 +128,8 @@ VGMSTREAM * init_vgmstream_xwb(STREAMFILE *streamFile) {
if (xwb.base_flags & WAVEBANK_FLAGS_COMPACT) { /* compact entry */
/* offset_in_sectors:21 and sector_alignment_in_bytes:11 */
uint32_t entry = (uint32_t)read_32bit(off+0x00, streamFile);
xwb.stream_offset = xwb.data_offset + (entry >> 11) * xwb.entry_alignment + (entry & 0x7FF);
uint32_t entry = (uint32_t)read_32bit(off+0x00, streamFile);
xwb.stream_offset = xwb.data_offset + (entry >> 11) * xwb.entry_alignment + (entry & 0x7FF);
/* find size (up to next entry or data end) */
if (xwb.streams > 1) {
@ -152,19 +152,18 @@ VGMSTREAM * init_vgmstream_xwb(STREAMFILE *streamFile) {
xwb.stream_offset = xwb.data_offset + (uint32_t)read_32bit(off+0x08, streamFile);
xwb.stream_size = (uint32_t)read_32bit(off+0x0c, streamFile);
if (xwb.xact == 1) { //LoopRegion (bytes)
xwb.loop_start = xwb.data_offset + (uint32_t)read_32bit(off+0x10, streamFile);
xwb.loop_end = xwb.loop_start + (uint32_t)read_32bit(off+0x14, streamFile);
} else if (xwb.xact == 2) {//LoopRegion (bytes)
xwb.loop_start = xwb.data_offset + (uint32_t)read_32bit(off+0x10, streamFile);
xwb.loop_end = xwb.loop_start + (uint32_t)read_32bit(off+0x14, streamFile);
//XMALoopRegion (XMA1/2) //todo
if (xwb.xact == 1) { //LoopRegion (bytes within data)
xwb.loop_start = (uint32_t)read_32bit(off+0x10, streamFile);
xwb.loop_end = (uint32_t)read_32bit(off+0x14, streamFile);//length
} else if (xwb.xact == 2) {//LoopRegion (bytes within data) or XMALoopRegion (bits within data)
xwb.loop_start = (uint32_t)read_32bit(off+0x10, streamFile);
xwb.loop_end = (uint32_t)read_32bit(off+0x14, streamFile);//length (LoopRegion) or offset (XMALoopRegion)
} else {//LoopRegion (samples)
xwb.loop_start_sample = (uint32_t)read_32bit(off+0x10, streamFile);
xwb.loop_end_sample = xwb.loop_start_sample + (uint32_t)read_32bit(off+0x14, streamFile);
}
xwb.loop_flag = (xwb.loop_end > xwb.loop_start || xwb.loop_end_sample > xwb.loop_start)
xwb.loop_flag = (xwb.loop_end > 0 || xwb.loop_end_sample > xwb.loop_start)
&& !(xwb.entry_flags & WAVEBANKENTRY_FLAGS_IGNORELOOP);
}
@ -222,23 +221,47 @@ VGMSTREAM * init_vgmstream_xwb(STREAMFILE *streamFile) {
if ((xwb.xact == 1 || xwb.xact == 2) && xwb.codec == PCM) {
xwb.num_samples = xwb.stream_size / 2 / xwb.channels;
if (xwb.loop_flag) {
xwb.loop_start_sample = xwb.loop_start / 2 / xwb.channels;
xwb.loop_end_sample = xwb.loop_end / 2 / xwb.channels;
xwb.loop_start_sample = (xwb.loop_start) / 2 / xwb.channels;
xwb.loop_end_sample = (xwb.loop_start + xwb.loop_end) / 2 / xwb.channels;
}
} else if (xwb.xact == 1 && xwb.codec == XBOX_ADPCM) {
}
else if (xwb.xact == 1 && xwb.codec == XBOX_ADPCM) {
xwb.num_samples = xwb.stream_size / 36 / xwb.channels*64;
if (xwb.loop_flag) {
xwb.loop_start_sample = xwb.loop_start / 36 / xwb.channels*64;
xwb.loop_end_sample = xwb.loop_end / 36 / xwb.channels*64;
xwb.loop_end_sample = (xwb.loop_start + xwb.loop_end) / 36 / xwb.channels*64;
}
} else if (xwb.xact == 2 && xwb.codec == MS_ADPCM) {
}
else if (xwb.xact == 2 && xwb.codec == MS_ADPCM && xwb.loop_flag) {
int block_size, samples_per_frame;
block_size = (xwb.block_align + 22) * xwb.channels; /*22=CONVERSION_OFFSET (?)*/
samples_per_frame = (block_size-(7-1) * xwb.channels) * 2 / xwb.channels;
if (xwb.loop_flag) {
xwb.loop_start_sample = xwb.loop_start / block_size / samples_per_frame;
xwb.loop_end_sample = xwb.loop_end / block_size / samples_per_frame;
}
xwb.loop_start_sample = (xwb.loop_start) / block_size / samples_per_frame;
xwb.loop_end_sample = (xwb.loop_start + xwb.loop_end) / block_size / samples_per_frame;
}
else if (xwb.xact == 2 && (xwb.codec == XMA1 || xwb.codec == XMA2) && xwb.loop_flag) {
/* need to manually find sample offsets, thanks to Microsoft dumb headers */
xma_sample_data xma_sd;
memset(&xma_sd,0,sizeof(xma_sample_data));
xma_sd.xma_version = xwb.codec == XMA1 ? 1 : 2;
xma_sd.channels = xwb.channels;
xma_sd.data_offset = xwb.stream_offset;
xma_sd.data_size = xwb.stream_size;
xma_sd.loop_flag = xwb.loop_flag;
xma_sd.loop_start_b = xwb.loop_start; /* bit offset in the stream */
xma_sd.loop_end_b = (xwb.loop_end >> 4); /*28b */
/* XACT adds +1 to the subframe, but this means 0 can't be used? */
xma_sd.loop_end_subframe = ((xwb.loop_end >> 2) & 0x3) + 1; /* 2b */
xma_sd.loop_start_subframe = ((xwb.loop_end >> 0) & 0x3) + 1; /* 2b */
xma_get_samples(&xma_sd, streamFile);
xwb.loop_start_sample = xma_sd.loop_start_sample;
xwb.loop_end_sample = xma_sd.loop_end_sample;
// todo fix properly (XWB loop_start/end seem to count padding samples while XMA1 RIFF doesn't)
xwb.loop_start_sample -= 512;
xwb.loop_end_sample -= 512;
}