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vgmstream/src/coding/vorbis_custom_utils_wwise.c

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#include "vorbis_custom_decoder.h"
#ifdef VGM_USE_VORBIS
#include <vorbis/codec.h>
#define WWISE_VORBIS_USE_PRECOMPILED_WVC 1 /* if enabled vgmstream weights ~150kb more but doesn't need external .wvc packets */
#if WWISE_VORBIS_USE_PRECOMPILED_WVC
#include "vorbis_custom_data_wwise.h"
#endif
/* **************************************************************************** */
/* DEFS */
/* **************************************************************************** */
static size_t build_header_identification(uint8_t * buf, size_t bufsize, int channels, int sample_rate, int blocksize_short, int blocksize_long);
static size_t build_header_comment(uint8_t * buf, size_t bufsize);
static size_t get_packet_header(STREAMFILE *streamFile, off_t offset, wwise_header_t header_type, int * granulepos, size_t * packet_size, int big_endian);
static size_t rebuild_packet(uint8_t * obuf, size_t obufsize, STREAMFILE *streamFile, off_t offset, vorbis_custom_codec_data * data, int big_endian);
static size_t rebuild_setup(uint8_t * obuf, size_t obufsize, STREAMFILE *streamFile, off_t offset, vorbis_custom_codec_data * data, int big_endian, int channels);
static int ww2ogg_generate_vorbis_packet(vgm_bitstream * ow, vgm_bitstream * iw, STREAMFILE *streamFile, off_t offset, vorbis_custom_codec_data * data, int big_endian);
static int ww2ogg_generate_vorbis_setup(vgm_bitstream * ow, vgm_bitstream * iw, vorbis_custom_codec_data * data, int channels, size_t packet_size, STREAMFILE *streamFile);
static int ww2ogg_codebook_library_copy(vgm_bitstream * ow, vgm_bitstream * iw);
static int ww2ogg_codebook_library_rebuild(vgm_bitstream * ow, vgm_bitstream * iw, size_t cb_size, STREAMFILE *streamFile);
static int ww2ogg_codebook_library_rebuild_by_id(vgm_bitstream * ow, uint32_t codebook_id, wwise_setup_t setup_type, STREAMFILE *streamFile);
static int ww2ogg_tremor_ilog(unsigned int v);
static unsigned int ww2ogg_tremor_book_maptype1_quantvals(unsigned int entries, unsigned int dimensions);
static int load_wvc(uint8_t * ibuf, size_t ibufsize, uint32_t codebook_id, wwise_setup_t setup_type, STREAMFILE *streamFile);
static int load_wvc_file(uint8_t * buf, size_t bufsize, uint32_t codebook_id, STREAMFILE *streamFile);
static int load_wvc_array(uint8_t * buf, size_t bufsize, uint32_t codebook_id, wwise_setup_t setup_type);
/* **************************************************************************** */
/* EXTERNAL API */
/* **************************************************************************** */
/**
* Wwise stores a reduced setup, and packets have mini headers with the size, and data packets
* may reduced as well. The format evolved over time so there are many variations.
* The Wwise implementation uses Tremor (fixed-point Vorbis) but shouldn't matter.
*
* Format reverse-engineered by hcs in ww2ogg (https://github.com/hcs64/ww2ogg).
*/
int vorbis_custom_setup_init_wwise(STREAMFILE *streamFile, off_t start_offset, vorbis_custom_codec_data *data) {
size_t header_size, packet_size;
vorbis_custom_config cfg = data->config;
if (cfg.setup_type == WWV_HEADER_TRIAD) {
/* read 3 Wwise packets with triad (id/comment/setup), each with a Wwise header */
off_t offset = start_offset;
/* normal identificacion packet */
header_size = get_packet_header(streamFile, offset, cfg.header_type, (int*)&data->op.granulepos, &packet_size, cfg.big_endian);
if (!header_size || packet_size > data->buffer_size) goto fail;
data->op.bytes = read_streamfile(data->buffer,offset+header_size,packet_size, streamFile);
if (vorbis_synthesis_headerin(&data->vi, &data->vc, &data->op) != 0) goto fail; /* parse identification header */
offset += header_size + packet_size;
/* normal comment packet */
header_size = get_packet_header(streamFile, offset, cfg.header_type, (int*)&data->op.granulepos, &packet_size, cfg.big_endian);
if (!header_size || packet_size > data->buffer_size) goto fail;
data->op.bytes = read_streamfile(data->buffer,offset+header_size,packet_size, streamFile);
if (vorbis_synthesis_headerin(&data->vi, &data->vc, &data->op) !=0 ) goto fail; /* parse comment header */
offset += header_size + packet_size;
/* normal setup packet */
header_size = get_packet_header(streamFile, offset, cfg.header_type, (int*)&data->op.granulepos, &packet_size, cfg.big_endian);
if (!header_size || packet_size > data->buffer_size) goto fail;
data->op.bytes = read_streamfile(data->buffer,offset+header_size,packet_size, streamFile);
if (vorbis_synthesis_headerin(&data->vi, &data->vc, &data->op) != 0) goto fail; /* parse setup header */
offset += header_size + packet_size;
}
else {
/* rebuild headers */
/* new identificacion packet */
data->op.bytes = build_header_identification(data->buffer, data->buffer_size, cfg.channels, cfg.sample_rate, cfg.blocksize_0_exp, cfg.blocksize_1_exp);
if (!data->op.bytes) goto fail;
if (vorbis_synthesis_headerin(&data->vi, &data->vc, &data->op) != 0) goto fail; /* parse identification header */
/* new comment packet */
data->op.bytes = build_header_comment(data->buffer, data->buffer_size);
if (!data->op.bytes) goto fail;
if (vorbis_synthesis_headerin(&data->vi, &data->vc, &data->op) !=0 ) goto fail; /* parse comment header */
/* rebuild setup packet */
data->op.bytes = rebuild_setup(data->buffer, data->buffer_size, streamFile, start_offset, data, cfg.big_endian, cfg.channels);
if (!data->op.bytes) goto fail;
if (vorbis_synthesis_headerin(&data->vi, &data->vc, &data->op) != 0) goto fail; /* parse setup header */
}
return 1;
fail:
return 0;
}
int vorbis_custom_parse_packet_wwise(VGMSTREAMCHANNEL *stream, vorbis_custom_codec_data *data) {
size_t header_size, packet_size = 0;
/* reconstruct a Wwise packet, if needed; final bytes may be bigger than packet_size so we get the header offsets here */
header_size = get_packet_header(stream->streamfile, stream->offset, data->config.header_type, (int*)&data->op.granulepos, &packet_size, data->config.big_endian);
if (!header_size || packet_size > data->buffer_size) {
VGM_LOG("Wwise Vorbis: wrong packet (0x%x) @ %lx\n", packet_size, stream->offset);
goto fail;
}
data->op.bytes = rebuild_packet(data->buffer, data->buffer_size, stream->streamfile,stream->offset, data, data->config.big_endian);
stream->offset += header_size + packet_size;
if (!data->op.bytes || data->op.bytes >= 0xFFFF) {
VGM_LOG("Wwise Vorbis: wrong bytes (0x%lx) @ %lx\n", data->op.bytes, stream->offset-header_size-packet_size);
goto fail;
}
return 1;
fail:
return 0;
}
/* **************************************************************************** */
/* INTERNAL HELPERS */
/* **************************************************************************** */
/* loads info from a wwise packet header */
static size_t get_packet_header(STREAMFILE *streamFile, off_t offset, wwise_header_t header_type, int * granulepos, size_t * packet_size, int big_endian) {
int32_t (*read_32bit)(off_t,STREAMFILE*) = big_endian ? read_32bitBE : read_32bitLE;
int16_t (*read_16bit)(off_t,STREAMFILE*) = big_endian ? read_16bitBE : read_16bitLE;
/* packet size doesn't include header size */
switch(header_type) {
case WWV_TYPE_8: /* size 4+4 */
*packet_size = (uint32_t)read_32bit(offset, streamFile);
*granulepos = read_32bit(offset+4, streamFile);
return 8;
case WWV_TYPE_6: /* size 4+2 */
*packet_size = (uint16_t)read_16bit(offset, streamFile);
*granulepos = read_32bit(offset+2, streamFile);
return 6;
case WWV_TYPE_2: /* size 2 */
*packet_size = (uint16_t)read_16bit(offset, streamFile);
*granulepos = 0; /* granule is an arbitrary unit so we could use offset instead; libvorbis has no actually need it actually */
return 2;
break;
default: /* ? */
return 0;
}
}
/* Transforms a Wwise data packet into a real Vorbis one (depending on config) */
static size_t rebuild_packet(uint8_t * obuf, size_t obufsize, STREAMFILE *streamFile, off_t offset, vorbis_custom_codec_data * data, int big_endian) {
vgm_bitstream ow, iw;
int rc, granulepos;
size_t header_size, packet_size;
size_t ibufsize = 0x8000; /* arbitrary max size of a setup packet */
uint8_t ibuf[0x8000]; /* Wwise setup packet buffer */
if (obufsize < ibufsize) goto fail; /* arbitrary expected min */
header_size = get_packet_header(streamFile, offset, data->config.header_type, &granulepos, &packet_size, big_endian);
if (!header_size || packet_size > obufsize) goto fail;
/* load Wwise data into internal buffer */
if (read_streamfile(ibuf,offset+header_size,packet_size, streamFile)!=packet_size)
goto fail;
/* prepare helper structs */
ow.buf = obuf;
ow.bufsize = obufsize;
ow.b_off = 0;
ow.mode = BITSTREAM_VORBIS;
iw.buf = ibuf;
iw.bufsize = ibufsize;
iw.b_off = 0;
iw.mode = BITSTREAM_VORBIS;
rc = ww2ogg_generate_vorbis_packet(&ow,&iw, streamFile,offset, data, big_endian);
if (!rc) goto fail;
if (ow.b_off % 8 != 0) {
VGM_LOG("Wwise Vorbis: didn't write exactly audio packet: 0x%lx + %li bits\n", ow.b_off / 8, ow.b_off % 8);
goto fail;
}
return ow.b_off / 8;
fail:
return 0;
}
/* Transforms a Wwise setup packet into a real Vorbis one (depending on config). */
static size_t rebuild_setup(uint8_t * obuf, size_t obufsize, STREAMFILE *streamFile, off_t offset, vorbis_custom_codec_data * data, int big_endian, int channels) {
vgm_bitstream ow, iw;
int rc, granulepos;
size_t header_size, packet_size;
size_t ibufsize = 0x8000; /* arbitrary max size of a setup packet */
uint8_t ibuf[0x8000]; /* Wwise setup packet buffer */
if (obufsize < ibufsize) goto fail; /* arbitrary expected min */
/* read Wwise packet header */
header_size = get_packet_header(streamFile, offset, data->config.header_type, &granulepos, &packet_size, big_endian);
if (!header_size || packet_size > ibufsize) goto fail;
/* load Wwise setup into internal buffer */
if (read_streamfile(ibuf,offset+header_size,packet_size, streamFile)!=packet_size)
goto fail;
/* prepare helper structs */
ow.buf = obuf;
ow.bufsize = obufsize;
ow.b_off = 0;
ow.mode = BITSTREAM_VORBIS;
iw.buf = ibuf;
iw.bufsize = ibufsize;
iw.b_off = 0;
iw.mode = BITSTREAM_VORBIS;
rc = ww2ogg_generate_vorbis_setup(&ow,&iw, data, channels, packet_size, streamFile);
if (!rc) goto fail;
if (ow.b_off % 8 != 0) {
VGM_LOG("Wwise Vorbis: didn't write exactly setup packet: 0x%lx + %li bits\n", ow.b_off / 8, ow.b_off % 8);
goto fail;
}
return ow.b_off / 8;
fail:
return 0;
}
static size_t build_header_identification(uint8_t * buf, size_t bufsize, int channels, int sample_rate, int blocksize_0_exp, int blocksize_1_exp) {
size_t bytes = 0x1e;
uint8_t blocksizes;
if (bytes > bufsize) return 0;
blocksizes = (blocksize_0_exp << 4) | (blocksize_1_exp);
put_8bit (buf+0x00, 0x01); /* packet_type (id) */
memcpy (buf+0x01, "vorbis", 6); /* id */
put_32bitLE(buf+0x07, 0x00); /* vorbis_version (fixed) */
put_8bit (buf+0x0b, channels); /* audio_channels */
put_32bitLE(buf+0x0c, sample_rate); /* audio_sample_rate */
put_32bitLE(buf+0x10, 0x00); /* bitrate_maximum (optional hint) */
put_32bitLE(buf+0x14, 0x00); /* bitrate_nominal (optional hint) */
put_32bitLE(buf+0x18, 0x00); /* bitrate_minimum (optional hint) */
put_8bit (buf+0x1c, blocksizes); /* blocksize_0 + blocksize_1 nibbles */
put_8bit (buf+0x1d, 0x01); /* framing_flag (fixed) */
return bytes;
}
static size_t build_header_comment(uint8_t * buf, size_t bufsize) {
size_t bytes = 0x19;
if (bytes > bufsize) return 0;
put_8bit (buf+0x00, 0x03); /* packet_type (comments) */
memcpy (buf+0x01, "vorbis", 6); /* id */
put_32bitLE(buf+0x07, 0x09); /* vendor_length */
memcpy (buf+0x0b, "vgmstream", 9); /* vendor_string */
put_32bitLE(buf+0x14, 0x00); /* user_comment_list_length */
put_8bit (buf+0x18, 0x01); /* framing_flag (fixed) */
return bytes;
}
/* **************************************************************************** */
/* INTERNAL WW2OGG STUFF */
/* **************************************************************************** */
/* The following code was mostly and manually converted from hcs's ww2ogg.
* Could be simplified but roughly tries to preserve the structure in case fixes have to be backported.
*
* Some validations are ommited (ex. read/write), as incorrect data should be rejected by libvorbis.
* To avoid GCC complaining all values are init to 0, and some that do need it are init again, for clarity.
* Reads/writes unsigned ints as most are bit values less than 32 and with no sign meaning.
*/
/* Copy packet as-is or rebuild first byte if mod_packets is used.
* (ref: https://www.xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-720004.3) */
static int ww2ogg_generate_vorbis_packet(vgm_bitstream * ow, vgm_bitstream * iw, STREAMFILE *streamFile, off_t offset, vorbis_custom_codec_data * data, int big_endian) {
int i,granule;
size_t header_size, packet_size, data_size;
header_size = get_packet_header(streamFile,offset, data->config.header_type, &granule, &packet_size, big_endian);
if (!header_size || packet_size > iw->bufsize) goto fail;
data_size = get_streamfile_size(streamFile);//todo get external data_size
if (offset + header_size + packet_size > data_size) {
VGM_LOG("Wwise Vorbis: page header truncated\n");
goto fail;
}
/* this may happen in the first packet; maybe it's for the encoder delay but doesn't seem to affect libvorbis */
//VGM_ASSERT(granule < 0, "Wwise Vorbis: negative granule %i @ 0x%lx\n", granule, offset);
if (data->config.packet_type == WWV_MODIFIED) {
/* rebuild first bits of packet type and window info (for the i-MDCT) */
uint32_t packet_type = 0, mode_number = 0, remainder = 0;
if (!data->mode_blockflag) { /* config error */
VGM_LOG("Wwise Vorbis: didn't load mode_blockflag\n");
goto fail;
}
/* audio packet type */
packet_type = 0;
w_bits(ow, 1, packet_type);
/* collect this packet mode from the first byte */
r_bits(iw, data->mode_bits,&mode_number); /* max 6b */
w_bits(ow, data->mode_bits, mode_number);
r_bits(iw, 8-data->mode_bits,&remainder);
/* adjust window info */
if (data->mode_blockflag[mode_number]) {
/* long window: peek at next frame to find flags */
off_t next_offset = offset + header_size + packet_size;
uint32_t next_blockflag = 0, prev_window_type = 0, next_window_type = 0;
next_blockflag = 0;
/* check if more data / not eof */
if (next_offset + header_size <= data_size) {
size_t next_header_size, next_packet_size;
int next_granule;
next_header_size = get_packet_header(streamFile,next_offset, data->config.header_type, &next_granule, &next_packet_size, big_endian);
if (!next_header_size) goto fail;
if (next_packet_size > 0) {
/* get next first byte to read next_mode_number */
uint32_t next_mode_number;
uint8_t nbuf[1];
vgm_bitstream nw;
nw.buf = nbuf;
nw.bufsize = 1;
nw.b_off = 0;
nw.mode = BITSTREAM_VORBIS;
if (read_streamfile(nw.buf, next_offset + next_header_size, nw.bufsize, streamFile) != nw.bufsize)
goto fail;
r_bits(&nw, data->mode_bits,&next_mode_number); /* max 6b */
next_blockflag = data->mode_blockflag[next_mode_number];
}
}
prev_window_type = data->prev_blockflag;
w_bits(ow, 1, prev_window_type);
next_window_type = next_blockflag;
w_bits(ow, 1, next_window_type);
}
data->prev_blockflag = data->mode_blockflag[mode_number]; /* save for next packet */
w_bits(ow, 8-data->mode_bits, remainder); /* this *isn't* byte aligned (ex. could be 10 bits written) */
}
else {
/* normal packets: first byte unchanged */
uint32_t c = 0;
r_bits(iw, 8, &c);
w_bits(ow, 8, c);
}
/* remainder of packet (not byte-aligned when using mod_packets) */
for (i = 1; i < packet_size; i++) {
uint32_t c = 0;
r_bits(iw, 8, &c);
w_bits(ow, 8, c);
}
/* remove trailing garbage bits */
if (ow->b_off % 8 != 0) {
uint32_t padding = 0;
int padding_bits = 8 - (ow->b_off % 8);
w_bits(ow, padding_bits, padding);
}
return 1;
fail:
return 0;
}
/* Rebuild a Wwise setup (simplified with removed stuff), recreating all six setup parts.
* (ref: https://www.xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-650004.2.4) */
static int ww2ogg_generate_vorbis_setup(vgm_bitstream * ow, vgm_bitstream * iw, vorbis_custom_codec_data * data, int channels, size_t packet_size, STREAMFILE *streamFile) {
int i,j,k;
uint32_t codebook_count = 0, floor_count = 0, residue_count = 0;
uint32_t codebook_count_less1 = 0;
uint32_t time_count_less1 = 0, dummy_time_value = 0;
/* packet header */
put_8bit(ow->buf+0x00, 0x05); /* packet_type (setup) */
memcpy (ow->buf+0x01, "vorbis", 6); /* id */
ow->b_off += (1+6) * 8; /* bit offset of output (Vorbis) setup, after fake type + id */
/* Codebooks */
r_bits(iw, 8,&codebook_count_less1);
w_bits(ow, 8, codebook_count_less1);
codebook_count = codebook_count_less1 + 1;
if (data->config.setup_type == WWV_FULL_SETUP) {
/* rebuild Wwise codebooks: untouched */
for (i = 0; i < codebook_count; i++) {
if(!ww2ogg_codebook_library_copy(ow, iw)) goto fail;
}
}
else if (data->config.setup_type == WWV_INLINE_CODEBOOKS) {
/* rebuild Wwise codebooks: inline in simplified format */
for (i = 0; i < codebook_count; i++) {
if(!ww2ogg_codebook_library_rebuild(ow, iw, 0, streamFile)) goto fail;
}
}
else {
/* rebuild Wwise codebooks: external (referenced by id) in simplified format */
for (i = 0; i < codebook_count; i++) {
int rc;
uint32_t codebook_id = 0;
r_bits(iw, 10,&codebook_id);
rc = ww2ogg_codebook_library_rebuild_by_id(ow, codebook_id, data->config.setup_type, streamFile);
if (!rc) goto fail;
}
}
/* Time domain transforms */
time_count_less1 = 0;
w_bits(ow, 6, time_count_less1);
dummy_time_value = 0;
w_bits(ow, 16, dummy_time_value);
if (data->config.setup_type == WWV_FULL_SETUP) {
/* rest of setup is untouched, copy bits */
uint32_t bitly = 0;
uint32_t total_bits_read = iw->b_off;
uint32_t setup_packet_size_bits = packet_size*8;
while (total_bits_read < setup_packet_size_bits) {
r_bits(iw, 1,&bitly);
w_bits(ow, 1, bitly);
total_bits_read = iw->b_off;
}
}
else {
/* rest of setup is altered, reconstruct */
uint32_t floor_count_less1 = 0, floor1_multiplier_less1 = 0, rangebits = 0;
uint32_t residue_count_less1 = 0;
uint32_t mapping_count_less1 = 0, mapping_count = 0;
uint32_t mode_count_less1 = 0, mode_count = 0;
/* Floors */
r_bits(iw, 6,&floor_count_less1);
w_bits(ow, 6, floor_count_less1);
floor_count = floor_count_less1 + 1;
for (i = 0; i < floor_count; i++) {
uint32_t floor_type = 0, floor1_partitions = 0;
uint32_t maximum_class = 0;
uint32_t floor1_partition_class_list[32]; /* max 5b */
uint32_t floor1_class_dimensions_list[16+1]; /* max 4b+1 */
// Always floor type 1
floor_type = 1;
w_bits(ow, 16, floor_type);
r_bits(iw, 5,&floor1_partitions);
w_bits(ow, 5, floor1_partitions);
memset(floor1_partition_class_list, 0, sizeof(uint32_t)*32);
maximum_class = 0;
for (j = 0; j < floor1_partitions; j++) {
uint32_t floor1_partition_class = 0;
r_bits(iw, 4,&floor1_partition_class);
w_bits(ow, 4, floor1_partition_class);
floor1_partition_class_list[j] = floor1_partition_class;
if (floor1_partition_class > maximum_class)
maximum_class = floor1_partition_class;
}
memset(floor1_class_dimensions_list, 0, sizeof(uint32_t)*(16+1));
for (j = 0; j <= maximum_class; j++) {
uint32_t class_dimensions_less1 = 0, class_subclasses = 0;
r_bits(iw, 3,&class_dimensions_less1);
w_bits(ow, 3, class_dimensions_less1);
floor1_class_dimensions_list[j] = class_dimensions_less1 + 1;
r_bits(iw, 2,&class_subclasses);
w_bits(ow, 2, class_subclasses);
if (0 != class_subclasses) {
uint32_t masterbook = 0;
r_bits(iw, 8,&masterbook);
w_bits(ow, 8, masterbook);
if (masterbook >= codebook_count) {
VGM_LOG("Wwise Vorbis: invalid floor1 masterbook\n");
goto fail;
}
}
for (k = 0; k < (1U<<class_subclasses); k++) {
uint32_t subclass_book_plus1 = 0;
int subclass_book = 0; /* this MUST be int */
r_bits(iw, 8,&subclass_book_plus1);
w_bits(ow, 8, subclass_book_plus1);
subclass_book = subclass_book_plus1 - 1;
if (subclass_book >= 0 && subclass_book >= codebook_count) {
VGM_LOG("Wwise Vorbis: invalid floor1 subclass book\n");
goto fail;
}
}
}
r_bits(iw, 2,&floor1_multiplier_less1);
w_bits(ow, 2, floor1_multiplier_less1);
r_bits(iw, 4,&rangebits);
w_bits(ow, 4, rangebits);
for (j = 0; j < floor1_partitions; j++) {
uint32_t current_class_number = 0;
current_class_number = floor1_partition_class_list[j];
for (k = 0; k < floor1_class_dimensions_list[current_class_number]; k++) {
uint32_t X = 0; /* max 4b (15) */
r_bits(iw, rangebits,&X);
w_bits(ow, rangebits, X);
}
}
}
/* Residues */
r_bits(iw, 6,&residue_count_less1);
w_bits(ow, 6, residue_count_less1);
residue_count = residue_count_less1 + 1;
for (i = 0; i < residue_count; i++) {
uint32_t residue_type = 0, residue_classifications = 0;
uint32_t residue_begin = 0, residue_end = 0, residue_partition_size_less1 = 0, residue_classifications_less1 = 0, residue_classbook = 0;
uint32_t residue_cascade[64+1]; /* 6b +1 */
r_bits(iw, 2,&residue_type);
w_bits(ow, 16, residue_type); /* 2b to 16b */
if (residue_type > 2) {
VGM_LOG("Wwise Vorbis: invalid residue type\n");
goto fail;
}
r_bits(iw, 24,&residue_begin);
w_bits(ow, 24, residue_begin);
r_bits(iw, 24,&residue_end);
w_bits(ow, 24, residue_end);
r_bits(iw, 24,&residue_partition_size_less1);
w_bits(ow, 24, residue_partition_size_less1);
r_bits(iw, 6,&residue_classifications_less1);
w_bits(ow, 6, residue_classifications_less1);
r_bits(iw, 8,&residue_classbook);
w_bits(ow, 8, residue_classbook);
residue_classifications = residue_classifications_less1 + 1;
if (residue_classbook >= codebook_count) {
VGM_LOG("Wwise Vorbis: invalid residue classbook\n");
goto fail;
}
memset(residue_cascade, 0, sizeof(uint32_t)*(64+1));
for (j = 0; j < residue_classifications; j++) {
uint32_t high_bits = 0, low_bits = 0, bitflag = 0;
high_bits = 0;
r_bits(iw, 3,&low_bits);
w_bits(ow, 3, low_bits);
r_bits(iw, 1,&bitflag);
w_bits(ow, 1, bitflag);
if (bitflag) {
r_bits(iw, 5,&high_bits);
w_bits(ow, 5, high_bits);
}
residue_cascade[j] = high_bits * 8 + low_bits;
}
for (j = 0; j < residue_classifications; j++) {
for (k = 0; k < 8; k++) {
if (residue_cascade[j] & (1 << k)) {
uint32_t residue_book = 0;
r_bits(iw, 8,&residue_book);
w_bits(ow, 8, residue_book);
if (residue_book >= codebook_count) {
VGM_LOG("Wwise Vorbis: invalid residue book\n");
goto fail;
}
}
}
}
}
/* Mappings */
r_bits(iw, 6,&mapping_count_less1);
w_bits(ow, 6, mapping_count_less1);
mapping_count = mapping_count_less1 + 1;
for (i = 0; i < mapping_count; i++) {
uint32_t mapping_type = 0, submaps_flag = 0, submaps = 0, square_polar_flag = 0;
uint32_t mapping_reserved = 0;
// always mapping type 0, the only one
mapping_type = 0;
w_bits(ow, 16, mapping_type);
r_bits(iw, 1,&submaps_flag);
w_bits(ow, 1, submaps_flag);
submaps = 1;
if (submaps_flag) {
uint32_t submaps_less1 = 0;
r_bits(iw, 4,&submaps_less1);
w_bits(ow, 4, submaps_less1);
submaps = submaps_less1 + 1;
}
r_bits(iw, 1,&square_polar_flag);
w_bits(ow, 1, square_polar_flag);
if (square_polar_flag) {
uint32_t coupling_steps_less1 = 0, coupling_steps = 0;
r_bits(iw, 8,&coupling_steps_less1);
w_bits(ow, 8, coupling_steps_less1);
coupling_steps = coupling_steps_less1 + 1;
for (j = 0; j < coupling_steps; j++) {
uint32_t magnitude = 0, angle = 0;
int magnitude_bits = ww2ogg_tremor_ilog(channels-1);
int angle_bits = ww2ogg_tremor_ilog(channels-1);
r_bits(iw, magnitude_bits,&magnitude);
w_bits(ow, magnitude_bits, magnitude);
r_bits(iw, angle_bits,&angle);
w_bits(ow, angle_bits, angle);
if (angle == magnitude || magnitude >= channels || angle >= channels) {
VGM_LOG("Wwise Vorbis: invalid coupling (angle=%i, mag=%i, ch=%i)\n", angle, magnitude,channels);
goto fail;
}
}
}
// a rare reserved field not removed by Ak!
r_bits(iw, 2,&mapping_reserved);
w_bits(ow, 2, mapping_reserved);
if (0 != mapping_reserved) {
VGM_LOG("Wwise Vorbis: mapping reserved field nonzero\n");
goto fail;
}
if (submaps > 1) {
for (j = 0; j < channels; j++) {
uint32_t mapping_mux = 0;
r_bits(iw, 4,&mapping_mux);
w_bits(ow, 4, mapping_mux);
if (mapping_mux >= submaps) {
VGM_LOG("Wwise Vorbis: mapping_mux >= submaps\n");
goto fail;
}
}
}
for (j = 0; j < submaps; j++) {
uint32_t time_config = 0, floor_number = 0, residue_number = 0;
// Another! Unused time domain transform configuration placeholder!
r_bits(iw, 8,&time_config);
w_bits(ow, 8, time_config);
r_bits(iw, 8,&floor_number);
w_bits(ow, 8, floor_number);
if (floor_number >= floor_count) {
VGM_LOG("Wwise Vorbis: invalid floor mapping\n");
goto fail;
}
r_bits(iw, 8,&residue_number);
w_bits(ow, 8, residue_number);
if (residue_number >= residue_count) {
VGM_LOG("Wwise Vorbis: invalid residue mapping\n");
goto fail;
}
}
}
/* Modes */
r_bits(iw, 6,&mode_count_less1);
w_bits(ow, 6, mode_count_less1);
mode_count = mode_count_less1 + 1;
memset(data->mode_blockflag, 0, sizeof(uint8_t)*(64+1)); /* up to max mode_count */
data->mode_bits = ww2ogg_tremor_ilog(mode_count-1); /* for mod_packets */
for (i = 0; i < mode_count; i++) {
uint32_t block_flag = 0, windowtype = 0, transformtype = 0, mapping = 0;
r_bits(iw, 1,&block_flag);
w_bits(ow, 1, block_flag);
data->mode_blockflag[i] = (block_flag != 0); /* for mod_packets */
windowtype = 0;
transformtype = 0;
w_bits(ow, 16, windowtype);
w_bits(ow, 16, transformtype);
r_bits(iw, 8,&mapping);
w_bits(ow, 8, mapping);
if (mapping >= mapping_count) {
VGM_LOG("Wwise Vorbis: invalid mode mapping\n");
goto fail;
}
}
}
/* end flag */
{
uint32_t framing = 0;
framing = 1;
w_bits(ow, 1, framing);
}
/* remove trailing garbage bits */
if (ow->b_off % 8 != 0) {
uint32_t padding = 0;
int padding_bits = 8 - (ow->b_off % 8);
w_bits(ow, padding_bits, padding);
}
return 1;
fail:
return 0;
}
/* copies Vorbis codebooks (untouched, but size uncertain) */
static int ww2ogg_codebook_library_copy(vgm_bitstream * ow, vgm_bitstream * iw) {
int i;
uint32_t id = 0, dimensions = 0, entries = 0;
uint32_t ordered = 0, lookup_type = 0;
r_bits(iw, 24,&id);
w_bits(ow, 24, id);
r_bits(iw, 16,&dimensions);
w_bits(ow, 16, dimensions);
r_bits(iw, 24,&entries);
w_bits(ow, 24, entries);
if (0x564342 != id) { /* "VCB" */
VGM_LOG("Wwise Vorbis: invalid codebook identifier\n");
goto fail;
}
/* codeword lengths */
r_bits(iw, 1,&ordered);
w_bits(ow, 1, ordered);
if (ordered) {
uint32_t initial_length = 0, current_entry = 0;
r_bits(iw, 5,&initial_length);
w_bits(ow, 5, initial_length);
current_entry = 0;
while (current_entry < entries) {
uint32_t number = 0;
int number_bits = ww2ogg_tremor_ilog(entries-current_entry);
r_bits(iw, number_bits,&number);
w_bits(ow, number_bits, number);
current_entry += number;
}
if (current_entry > entries) {
VGM_LOG("Wwise Vorbis: current_entry out of range\n");
goto fail;
}
}
else {
uint32_t sparse = 0;
r_bits(iw, 1,&sparse);
w_bits(ow, 1, sparse);
for (i = 0; i < entries; i++) {
uint32_t present_bool = 0;
present_bool = 1;
if (sparse) {
uint32_t present = 0;
r_bits(iw, 1,&present);
w_bits(ow, 1, present);
present_bool = (0 != present);
}
if (present_bool) {
uint32_t codeword_length = 0;
r_bits(iw, 5,&codeword_length);
w_bits(ow, 5, codeword_length);
}
}
}
/* lookup table */
r_bits(iw, 4,&lookup_type);
w_bits(ow, 4, lookup_type);
if (0 == lookup_type) {
//VGM_LOG("Wwise Vorbis: no lookup table\n");
}
else if (1 == lookup_type) {
//VGM_LOG("Wwise Vorbis: lookup type 1\n");
uint32_t quantvals = 0, min = 0, max = 0;
uint32_t value_length = 0, sequence_flag = 0;
r_bits(iw, 32,&min);
w_bits(ow, 32, min);
r_bits(iw, 32,&max);
w_bits(ow, 32, max);
r_bits(iw, 4,&value_length);
w_bits(ow, 4, value_length);
r_bits(iw, 1,&sequence_flag);
w_bits(ow, 1, sequence_flag);
quantvals = ww2ogg_tremor_book_maptype1_quantvals(entries, dimensions);
for (i = 0; i < quantvals; i++) {
uint32_t val = 0, val_bits = 0;
val_bits = value_length+1;
r_bits(iw, val_bits,&val);
w_bits(ow, val_bits, val);
}
}
else if (2 == lookup_type) {
VGM_LOG("Wwise Vorbis: didn't expect lookup type 2\n");
goto fail;
}
else {
VGM_LOG("Wwise Vorbis: invalid lookup type\n");
goto fail;
}
return 1;
fail:
return 0;
}
/* rebuilds a Wwise codebook into a Vorbis codebook */
static int ww2ogg_codebook_library_rebuild(vgm_bitstream * ow, vgm_bitstream * iw, size_t cb_size, STREAMFILE *streamFile) {
int i;
uint32_t id = 0, dimensions = 0, entries = 0;
uint32_t ordered = 0, lookup_type = 0;
id = 0x564342; /* "VCB" */
w_bits(ow, 24, id);
r_bits(iw, 4,&dimensions);
w_bits(ow, 16, dimensions); /* 4 to 16 */
r_bits(iw, 14,&entries);
w_bits(ow, 24, entries); /* 14 to 24*/
/* codeword lengths */
r_bits(iw, 1,&ordered);
w_bits(ow, 1, ordered);
if (ordered) {
uint32_t initial_length = 0, current_entry = 0;
r_bits(iw, 5,&initial_length);
w_bits(ow, 5, initial_length);
current_entry = 0;
while (current_entry < entries) {
uint32_t number = 0;
int number_bits = ww2ogg_tremor_ilog(entries-current_entry);
r_bits(iw, number_bits,&number);
w_bits(ow, number_bits, number);
current_entry += number;
}
if (current_entry > entries) {
VGM_LOG("Wwise Vorbis: current_entry out of range\n");
goto fail;
}
}
else {
uint32_t codeword_length_length = 0, sparse = 0;
r_bits(iw, 3,&codeword_length_length);
r_bits(iw, 1,&sparse);
w_bits(ow, 1, sparse);
if (0 == codeword_length_length || 5 < codeword_length_length) {
VGM_LOG("Wwise Vorbis: nonsense codeword length\n");
goto fail;
}
for (i = 0; i < entries; i++) {
uint32_t present_bool = 0;
present_bool = 1;
if (sparse) {
uint32_t present = 0;
r_bits(iw, 1,&present);
w_bits(ow, 1, present);
present_bool = (0 != present);
}
if (present_bool) {
uint32_t codeword_length = 0;
r_bits(iw, codeword_length_length,&codeword_length);
w_bits(ow, 5, codeword_length); /* max 7 (3b) to 5 */
}
}
}
/* lookup table */
r_bits(iw, 1,&lookup_type);
w_bits(ow, 4, lookup_type); /* 1 to 4 */
if (0 == lookup_type) {
//VGM_LOG("Wwise Vorbis: no lookup table\n");
}
else if (1 == lookup_type) {
//VGM_LOG("Wwise Vorbis: lookup type 1\n");
uint32_t quantvals = 0, min = 0, max = 0;
uint32_t value_length = 0, sequence_flag = 0;
r_bits(iw, 32,&min);
w_bits(ow, 32, min);
r_bits(iw, 32,&max);
w_bits(ow, 32, max);
r_bits(iw, 4,&value_length);
w_bits(ow, 4, value_length);
r_bits(iw, 1,&sequence_flag);
w_bits(ow, 1, sequence_flag);
quantvals = ww2ogg_tremor_book_maptype1_quantvals(entries, dimensions);
for (i = 0; i < quantvals; i++) {
uint32_t val = 0, val_bits = 0;
val_bits = value_length+1;
r_bits(iw, val_bits,&val);
w_bits(ow, val_bits, val);
}
}
else if (2 == lookup_type) {
VGM_LOG("Wwise Vorbis: didn't expect lookup type 2\n");
goto fail;
}
else {
VGM_LOG("Wwise Vorbis: invalid lookup type\n");
goto fail;
}
/* check that we used exactly all bytes */
/* note: if all bits are used in the last byte there will be one extra 0 byte */
if ( 0 != cb_size && iw->b_off/8+1 != cb_size ) {
VGM_LOG("Wwise Vorbis: codebook size mistach (expected 0x%x, wrote 0x%lx)\n", cb_size, iw->b_off/8+1);
goto fail;
}
return 1;
fail:
return 0;
}
/* rebuilds an external Wwise codebook referenced by id to a Vorbis codebook */
static int ww2ogg_codebook_library_rebuild_by_id(vgm_bitstream * ow, uint32_t codebook_id, wwise_setup_t setup_type, STREAMFILE *streamFile) {
size_t ibufsize = 0x8000; /* arbitrary max size of a codebook */
uint8_t ibuf[0x8000]; /* Wwise codebook buffer */
size_t cb_size;
vgm_bitstream iw;
cb_size = load_wvc(ibuf,ibufsize, codebook_id, setup_type, streamFile);
if (cb_size == 0) goto fail;
iw.buf = ibuf;
iw.bufsize = ibufsize;
iw.b_off = 0;
iw.mode = BITSTREAM_VORBIS;
return ww2ogg_codebook_library_rebuild(ow, &iw, cb_size, streamFile);
fail:
return 0;
}
/* fixed-point ilog from Xiph's Tremor */
static int ww2ogg_tremor_ilog(unsigned int v) {
int ret=0;
while(v){
ret++;
v>>=1;
}
return(ret);
}
/* quantvals-something from Xiph's Tremor */
static unsigned int ww2ogg_tremor_book_maptype1_quantvals(unsigned int entries, unsigned int dimensions) {
/* get us a starting hint, we'll polish it below */
int bits=ww2ogg_tremor_ilog(entries);
int vals=entries>>((bits-1)*(dimensions-1)/dimensions);
while(1){
unsigned long acc=1;
unsigned long acc1=1;
unsigned int i;
for(i=0;i<dimensions;i++){
acc*=vals;
acc1*=vals+1;
}
if(acc<=entries && acc1>entries){
return(vals);
}else{
if(acc>entries){
vals--;
}else{
vals++;
}
}
}
}
/* **************************************************************************** */
/* INTERNAL UTILS */
/* **************************************************************************** */
/* loads an external Wwise Vorbis Codebooks file (wvc) referenced by ID and returns size */
static int load_wvc(uint8_t * ibuf, size_t ibufsize, uint32_t codebook_id, wwise_setup_t setup_type, STREAMFILE *streamFile) {
size_t bytes;
/* try to locate from the precompiled list */
bytes = load_wvc_array(ibuf, ibufsize, codebook_id, setup_type);
if (bytes)
return bytes;
/* try to load from external file (ignoring type, just use file if found) */
bytes = load_wvc_file(ibuf, ibufsize, codebook_id, streamFile);
if (bytes)
return bytes;
/* not found */
VGM_LOG("Wwise Vorbis: codebook_id %04x not found\n", codebook_id);
return 0;
}
static int load_wvc_file(uint8_t * buf, size_t bufsize, uint32_t codebook_id, STREAMFILE *streamFile) {
STREAMFILE * streamFileWvc = NULL;
size_t wvc_size = 0;
{
char setupname[PATH_LIMIT];
char pathname[PATH_LIMIT];
char *path;
/* read "(dir/).wvc" */
streamFile->get_name(streamFile,pathname,sizeof(pathname));
path = strrchr(pathname,DIR_SEPARATOR);
if (path)
*(path+1) = '\0';
else
pathname[0] = '\0';
snprintf(setupname,PATH_LIMIT,"%s.wvc", pathname);
streamFileWvc = streamFile->open(streamFile,setupname,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!streamFileWvc) goto fail;
wvc_size = streamFileWvc->get_size(streamFileWvc);
}
/* find codebook and copy to buffer */
{
off_t table_start, codebook_offset;
size_t codebook_size;
int codebook_count;
/* at the end of the WVC is an offset table, and we need to find codebook id (number) offset */
table_start = read_32bitLE(wvc_size - 4, streamFileWvc); /* last offset */
codebook_count = ((wvc_size - table_start) / 4) - 1;
if (table_start > wvc_size || codebook_id >= codebook_count) goto fail;
codebook_offset = read_32bitLE(table_start + codebook_id*4, streamFileWvc);
codebook_size = read_32bitLE(table_start + codebook_id*4 + 4, streamFileWvc) - codebook_offset;
if (codebook_size > bufsize) goto fail;
if (read_streamfile(buf, codebook_offset, codebook_size, streamFileWvc) != codebook_size)
goto fail;
streamFileWvc->close(streamFileWvc);
return codebook_size;
}
fail:
if (streamFileWvc) streamFileWvc->close(streamFileWvc);
return 0;
}
static int load_wvc_array(uint8_t * buf, size_t bufsize, uint32_t codebook_id, wwise_setup_t setup_type) {
#if WWISE_VORBIS_USE_PRECOMPILED_WVC
/* get pointer to array */
{
int i, list_length;
const wvc_info * wvc_list;
switch (setup_type) {
case WWV_EXTERNAL_CODEBOOKS:
wvc_list = wvc_list_standard;
list_length = sizeof(wvc_list_standard) / sizeof(wvc_info);
break;
case WWV_AOTUV603_CODEBOOKS:
wvc_list = wvc_list_aotuv603;
list_length = sizeof(wvc_list_standard) / sizeof(wvc_info);
break;
default:
goto fail;
}
for (i=0; i < list_length; i++) {
if (wvc_list[i].id == codebook_id) {
if (wvc_list[i].size > bufsize) goto fail;
/* found: copy data as-is */
memcpy(buf,wvc_list[i].codebook, wvc_list[i].size);
return wvc_list[i].size;
}
}
}
// this can be used if the lists contained a 1:1 dump of the codebook files
#if 0
if (wvc == NULL) goto fail;
/* find codebook and copy to buffer */
{
off_t table_start, codebook_offset;
size_t codebook_size;
int codebook_count;
/* at the end of the WVC is an offset table, and we need to find codebook id (number) offset */
table_start = get_32bitLE(wvc + wvc_size - 4); /* last offset */
codebook_count = ((wvc_size - table_start) / 4) - 1;
if (codebook_id >= codebook_count) goto fail;
codebook_offset = get_32bitLE(wvc + table_start + codebook_id*4);
codebook_size = get_32bitLE(wvc + table_start + codebook_id*4 + 4) - codebook_offset;
if (codebook_size > bufsize) goto fail;
memcpy(buf, wvc+codebook_offset, codebook_size);
return codebook_size;
}
#endif
fail:
#endif
return 0;
}
#endif
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