vgmstream/src/meta/mus_acm.c
bnnm dbbbfcc9f5 Make get_streamfile_dos_line read CR/LF too and rename accordingly
CR used in some Falcom looping files as separator
2017-11-23 22:53:43 +01:00

361 lines
12 KiB
C

#include "../vgmstream.h"
#include "meta.h"
#include "../util.h"
#include "../streamfile.h"
#include "../coding/acm_decoder.h"
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#ifdef WIN32
#define DIRSEP '\\'
#else
#define DIRSEP '/'
#endif
#define NAME_LENGTH PATH_LIMIT
static int exists(char *filename, STREAMFILE *streamfile) {
STREAMFILE * temp =
streamfile->open(streamfile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!temp) return 0;
close_streamfile(temp);
return 1;
}
/* needs the name of a file in the directory to test, as all we can do reliably is attempt to open a file */
static int find_directory_name(char *name_base, char *dir_name, int subdir_name_size, char *subdir_name, char *name, char *file_name, STREAMFILE *streamfile) {
/* find directory name */
{
char temp_dir_name[NAME_LENGTH];
subdir_name[0]='\0';
concatn(subdir_name_size,subdir_name,name_base);
if (strlen(subdir_name) >= subdir_name_size-2) goto fail;
subdir_name[strlen(subdir_name)+1]='\0';
subdir_name[strlen(subdir_name)]=DIRSEP;
temp_dir_name[0]='\0';
concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
concatn(sizeof(temp_dir_name),temp_dir_name,name);
concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
if (!exists(temp_dir_name,streamfile)) {
int i;
/* try all lowercase */
for (i=strlen(subdir_name)-1;i>=0;i--) {
subdir_name[i]=tolower(subdir_name[i]);
}
temp_dir_name[0]='\0';
concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
concatn(sizeof(temp_dir_name),temp_dir_name,name);
concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
if (!exists(temp_dir_name,streamfile)) {
/* try first uppercase */
subdir_name[0]=toupper(subdir_name[0]);
temp_dir_name[0]='\0';
concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
concatn(sizeof(temp_dir_name),temp_dir_name,name);
concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
if (!exists(temp_dir_name,streamfile)) {
/* try also 3rd uppercase */
subdir_name[2]=toupper(subdir_name[2]);
temp_dir_name[0]='\0';
concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
concatn(sizeof(temp_dir_name),temp_dir_name,name);
concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
if (!exists(temp_dir_name,streamfile)) {
/* ah well, disaster has befallen your party */
goto fail;
}
}
}
}
}
return 0;
fail:
return 1;
}
/* MUS playlist for InterPlay ACM */
VGMSTREAM * init_vgmstream_mus_acm(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
ACMStream *acm_stream = NULL;
mus_acm_codec_data *data = NULL;
char filename[NAME_LENGTH];
char line_buffer[NAME_LENGTH];
char * end_ptr;
char name_base[NAME_LENGTH];
char (*names)[NAME_LENGTH] = NULL;
char dir_name[NAME_LENGTH];
char subdir_name[NAME_LENGTH];
int i;
int loop_flag = 0;
int channel_count;
int file_count;
size_t line_bytes;
int whole_line_read = 0;
off_t mus_offset = 0;
int loop_end_index = -1;
int loop_start_index = -1;
int32_t loop_start_samples = -1;
int32_t loop_end_samples = -1;
int32_t total_samples = 0;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("mus",filename_extension(filename))) goto fail;
/* read file name base */
line_bytes = get_streamfile_text_line(sizeof(line_buffer),line_buffer,
mus_offset, streamFile, &whole_line_read);
if (!whole_line_read) goto fail;
mus_offset += line_bytes;
memcpy(name_base,line_buffer,sizeof(name_base));
/* uppercase name_base */
{
int i;
for (i=0;name_base[i];i++) name_base[i]=toupper(name_base[i]);
}
/*printf("name base: %s\n",name_base);*/
/* read track entry count */
line_bytes = get_streamfile_text_line(sizeof(line_buffer),line_buffer,
mus_offset, streamFile, &whole_line_read);
if (!whole_line_read) goto fail;
if (line_buffer[0] == '\0') goto fail;
mus_offset += line_bytes;
file_count = strtol(line_buffer,&end_ptr,10);
/* didn't parse whole line as an integer (optional opening whitespace) */
if (*end_ptr != '\0') goto fail;
/*printf("entries: %d\n",file_count);*/
names = calloc(file_count,sizeof(names[0]));
if (!names) goto fail;
dir_name[0]='\0';
concatn(sizeof(dir_name),dir_name,filename);
{
/* find directory name for the directory contianing the MUS */
char * last_slash;
last_slash = strrchr(dir_name,DIRSEP);
if (last_slash != NULL) {
/* trim off the file name */
last_slash[1]='\0';
} else {
/* no dir name? annihilate! */
dir_name[0] = '\0';
}
}
/* can't do this until we have a file name */
subdir_name[0]='\0';
/* parse each entry */
{
char name[NAME_LENGTH];
char loop_name_base_temp[NAME_LENGTH];
char loop_name_temp[NAME_LENGTH];
char loop_name_base[NAME_LENGTH];
char loop_name[NAME_LENGTH];
for (i=0;i<file_count;i++)
{
int fields_matched;
line_bytes =
get_streamfile_text_line(sizeof(line_buffer),line_buffer,
mus_offset, streamFile, &whole_line_read);
if (!whole_line_read) goto fail;
mus_offset += line_bytes;
fields_matched = sscanf(line_buffer,"%s %s %s",name,
loop_name_base_temp,loop_name_temp);
if (fields_matched < 1) goto fail;
if (fields_matched == 3 && loop_name_base_temp[0] != '@' && loop_name_temp[0] != '@')
{
int j;
memcpy(loop_name,loop_name_temp,sizeof(loop_name));
memcpy(loop_name_base,loop_name_base_temp,sizeof(loop_name_base));
for (j=0;loop_name[j];j++) loop_name[j]=toupper(loop_name[j]);
for (j=0;loop_name_base[j];j++) loop_name_base[j]=toupper(loop_name_base[j]);
/* loop back entry */
loop_end_index = i;
}
else if (fields_matched >= 2 && loop_name_base_temp[0] != '@')
{
int j;
memcpy(loop_name,loop_name_base_temp,sizeof(loop_name));
memcpy(loop_name_base,name_base,sizeof(loop_name_base));
for (j=0;loop_name[j];j++) loop_name[j]=toupper(loop_name[j]);
for (j=0;loop_name_base[j];j++) loop_name_base[j]=toupper(loop_name_base[j]);
/* loop back entry */
loop_end_index = i;
}
else
{
/* normal entry, ignoring the @TAG for now */
}
{
/* uppercase */
int j;
for (j=0;j<strlen(name);j++) name[j]=toupper(name[j]);
}
/* try looking in the common directory */
names[i][0] = '\0';
concatn(sizeof(names[0]),names[i],dir_name);
concatn(sizeof(names[0]),names[i],name);
concatn(sizeof(names[0]),names[i],".ACM");
if (!exists(names[i],streamFile)) {
/* We can't test for the directory until we have a file name
* to look for, so we do it here with the first file that seems to
* be in a subdirectory */
if (subdir_name[0]=='\0') {
if (find_directory_name(name_base, dir_name, sizeof(subdir_name), subdir_name, name, filename, streamFile))
goto fail;
}
names[i][0] = '\0';
concatn(sizeof(names[0]),names[i],dir_name);
concatn(sizeof(names[0]),names[i],subdir_name);
concatn(sizeof(names[0]),names[i],name_base);
concatn(sizeof(names[0]),names[i],name);
concatn(sizeof(names[0]),names[i],".ACM");
if (!exists(names[i],streamFile)) goto fail;
}
/*printf("%2d %s\n",i,names[i]);*/
}
if (loop_end_index != -1) {
/* find the file to loop back to */
char target_name[NAME_LENGTH];
target_name[0]='\0';
concatn(sizeof(target_name),target_name,dir_name);
concatn(sizeof(target_name),target_name,subdir_name);
concatn(sizeof(target_name),target_name,loop_name_base);
concatn(sizeof(target_name),target_name,loop_name);
concatn(sizeof(target_name),target_name,".ACM");
/*printf("looking for loop %s\n",target_name);*/
for (i=0;i<file_count;i++) {
if (!strcmp(target_name,names[i]))
{
loop_start_index = i;
break;
}
}
if (loop_start_index != -1) {
/*printf("loop from %d to %d\n",loop_end_index,loop_start_index);*/
/*if (loop_start_index < file_count-1) loop_start_index++;*/
loop_end_index++;
loop_flag = 1;
}
}
}
/* set up the struct to track the files */
data = calloc(1,sizeof(mus_acm_codec_data));
if (!data) goto fail;
data->files = calloc(file_count,sizeof(ACMStream *));
if (!data->files) {
free(data); data = NULL;
goto fail;
}
/* open each file... */
for (i=0;i<file_count;i++) {
/* gonna do this a little backwards, open and parse the file
before creating the vgmstream */
if (acm_open_decoder(&acm_stream,streamFile,names[i]) != ACM_OK) {
goto fail;
}
data->files[i]=acm_stream;
if (i==loop_start_index) loop_start_samples = total_samples;
if (i==loop_end_index) loop_end_samples = total_samples;
total_samples += acm_stream->total_values / acm_stream->info.channels;
if (i>0) {
if (acm_stream->info.channels != data->files[0]->info.channels ||
acm_stream->info.rate != data->files[0]->info.rate) goto fail;
}
}
if (i==loop_end_index) loop_end_samples = total_samples;
channel_count = data->files[0]->info.channels;
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
vgmstream->channels = channel_count;
vgmstream->sample_rate = data->files[0]->info.rate;
vgmstream->coding_type = coding_ACM;
vgmstream->num_samples = total_samples;
vgmstream->loop_start_sample = loop_start_samples;
vgmstream->loop_end_sample = loop_end_samples;
vgmstream->layout_type = layout_mus_acm;
vgmstream->meta_type = meta_MUS_ACM;
data->file_count = file_count;
data->current_file = 0;
data->loop_start_file = loop_start_index;
data->loop_end_file = loop_end_index;
/*data->end_file = -1;*/
vgmstream->codec_data = data;
free(names);
return vgmstream;
/* clean up anything we may have opened */
fail:
if (data) {
int i;
for (i=0;i<data->file_count;i++) {
if (data->files[i]) {
acm_close(data->files[i]);
data->files[i] = NULL;
}
}
}
if (names) free(names);
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}