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Clean AST meta

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This commit is contained in:
bnnm 2018-08-26 13:48:14 +02:00
parent bc62a689c0
commit 5aad45ab87
2 changed files with 51 additions and 70 deletions
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23
src/layout/blocked_ast.c
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@ -1,18 +1,21 @@
#include "layout.h"
#include "../vgmstream.h"
/* set up for the block at the given offset */
/* simple headered blocks */
void block_update_ast(off_t block_offset, VGMSTREAM * vgmstream) {
STREAMFILE* streamFile = vgmstream->ch[0].streamfile;
int i;
vgmstream->current_block_offset = block_offset;
vgmstream->current_block_size = read_32bitBE(
vgmstream->current_block_offset+4,
vgmstream->ch[0].streamfile);
vgmstream->next_block_offset = vgmstream->current_block_offset +
vgmstream->current_block_size*vgmstream->channels + 0x20;
size_t block_data, header_size;
for (i=0;i<vgmstream->channels;i++) {
vgmstream->ch[i].offset = vgmstream->current_block_offset +
0x20 + vgmstream->current_block_size*i;
/* 0x00: "BLCK", rest: null */
block_data = read_32bitBE(block_offset+0x04,streamFile);
header_size = 0x20;
vgmstream->current_block_offset = block_offset;
vgmstream->current_block_size = block_data;
vgmstream->next_block_offset = block_offset + block_data*vgmstream->channels + header_size;
for (i = 0; i < vgmstream->channels; i++) {
vgmstream->ch[i].offset = block_offset + header_size + block_data*i;
}
}

98
src/meta/ast.c
View File

@ -2,82 +2,60 @@
#include "../layout/layout.h"
#include "../util.h"
/* .AST - from Nintendo games [Super Mario Galaxy (Wii), Pac-Man Vs (GC)] */
VGMSTREAM * init_vgmstream_ast(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
coding_t coding_type;
int codec_number;
int channel_count;
int loop_flag;
off_t start_offset;
int loop_flag, channel_count, codec;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("ast",filename_extension(filename))) goto fail;
/* check header */
if ((uint32_t)read_32bitBE(0,streamFile)!=0x5354524D || /* "STRM" */
read_16bitBE(0xa,streamFile)!=0x10 ||
/* check that file = header (0x40) + data */
read_32bitBE(4,streamFile)+0x40!=get_streamfile_size(streamFile))
/* checks */
if (!check_extensions(streamFile, "ast"))
goto fail;
/* check for a first block */
if (read_32bitBE(0x40,streamFile)!=0x424C434B) /* "BLCK" */
if (read_32bitBE(0x00,streamFile) != 0x5354524D) /* "STRM" */
goto fail;
if (read_16bitBE(0x0a,streamFile) != 0x10) /* ? */
goto fail;
/* check type details */
codec_number = read_16bitBE(8,streamFile);
loop_flag = read_16bitBE(0xe,streamFile);
channel_count = read_16bitBE(0xc,streamFile);
/*max_block = read_32bitBE(0x20,streamFile);*/
if (read_32bitBE(0x04,streamFile)+0x40 != get_streamfile_size(streamFile))
goto fail;
codec = read_16bitBE(0x08,streamFile);
channel_count = read_16bitBE(0x0c,streamFile);
loop_flag = read_16bitBE(0x0e,streamFile);
//max_block = read_32bitBE(0x20,streamFile);
switch (codec_number) {
case 0:
coding_type = coding_NGC_AFC;
start_offset = 0x40;
if (read_32bitBE(start_offset,streamFile) != 0x424C434B) /* "BLCK" */
goto fail;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_AST;
vgmstream->sample_rate = read_32bitBE(0x10,streamFile);
vgmstream->num_samples = read_32bitBE(0x14,streamFile);
vgmstream->loop_start_sample = read_32bitBE(0x18,streamFile);
vgmstream->loop_end_sample = read_32bitBE(0x1c,streamFile);
vgmstream->layout_type = layout_blocked_ast;
switch (codec) {
case 0x00: /* , Pikmin 2 (GC) */
vgmstream->coding_type = coding_NGC_AFC;
break;
case 1:
coding_type = coding_PCM16BE;
case 0x01: /* Mario Kart: Double Dash!! (GC) */
vgmstream->coding_type = coding_PCM16BE;
break;
default:
goto fail;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->num_samples = read_32bitBE(0x14,streamFile);
vgmstream->sample_rate = read_32bitBE(0x10,streamFile);
/* channels and loop flag are set by allocate_vgmstream */
vgmstream->loop_start_sample = read_32bitBE(0x18,streamFile);
vgmstream->loop_end_sample = read_32bitBE(0x1c,streamFile);
vgmstream->coding_type = coding_type;
vgmstream->layout_type = layout_blocked_ast;
vgmstream->meta_type = meta_AST;
/* open the file for reading by each channel */
{
int i;
for (i=0;i<channel_count;i++) {
vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!vgmstream->ch[i].streamfile) goto fail;
}
}
/* start me up */
block_update_ast(0x40,vgmstream);
if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
goto fail;
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
close_vgmstream(vgmstream);
return NULL;
}