mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-14 07:32:52 +01:00
350 lines
12 KiB
C
350 lines
12 KiB
C
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#include "../vgmstream.h"
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#include "meta.h"
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#include "../util.h"
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#include "../streamfile.h"
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#include "../coding/acm_decoder.h"
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#ifdef WIN32
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#define DIRSEP '\\'
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#else
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#define DIRSEP '/'
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#endif
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#define NAME_LENGTH 260
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int exists(char *filename, STREAMFILE *streamfile) {
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STREAMFILE * temp =
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streamfile->open(streamfile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!temp) return 0;
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close_streamfile(temp);
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return 1;
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}
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/* needs the name of a file in the directory to test, as all we can do reliably is attempt to open a file */
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int find_directory_name(char *name_base, char *dir_name, int subdir_name_size, char *subdir_name, char *name, char *file_name, STREAMFILE *streamfile) {
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/* find directory name */
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{
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char temp_dir_name[NAME_LENGTH];
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subdir_name[0]='\0';
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concatn(subdir_name_size,subdir_name,name_base);
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if (strlen(subdir_name) >= subdir_name_size-2) goto fail;
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subdir_name[strlen(subdir_name)+1]='\0';
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subdir_name[strlen(subdir_name)]=DIRSEP;
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temp_dir_name[0]='\0';
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concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
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concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
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concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
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concatn(sizeof(temp_dir_name),temp_dir_name,name);
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concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
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if (!exists(temp_dir_name,streamfile)) {
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int i;
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/* try all lowercase */
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for (i=strlen(subdir_name)-1;i>=0;i--) {
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subdir_name[i]=tolower(subdir_name[i]);
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}
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temp_dir_name[0]='\0';
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concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
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concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
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concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
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concatn(sizeof(temp_dir_name),temp_dir_name,name);
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concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
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if (!exists(temp_dir_name,streamfile)) {
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/* try first uppercase */
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subdir_name[0]=toupper(subdir_name[0]);
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temp_dir_name[0]='\0';
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concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
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concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
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concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
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concatn(sizeof(temp_dir_name),temp_dir_name,name);
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concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
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if (!exists(temp_dir_name,streamfile)) {
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/* try also 3rd uppercase */
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subdir_name[2]=toupper(subdir_name[2]);
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temp_dir_name[0]='\0';
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concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
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concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
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concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
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concatn(sizeof(temp_dir_name),temp_dir_name,name);
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concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
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if (!exists(temp_dir_name,streamfile)) {
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/* ah well, disaster has befallen your party */
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goto fail;
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}
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}
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}
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}
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}
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return 0;
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fail:
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return 1;
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}
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/* MUS playlist for InterPlay ACM */
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VGMSTREAM * init_vgmstream_mus_acm(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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ACMStream *acm_stream = NULL;
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mus_acm_codec_data *data = NULL;
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char filename[NAME_LENGTH];
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char line_buffer[NAME_LENGTH];
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char * end_ptr;
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char name_base[NAME_LENGTH];
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char (*names)[NAME_LENGTH] = NULL;
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char dir_name[NAME_LENGTH];
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char subdir_name[NAME_LENGTH];
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int i;
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int loop_flag = 0;
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int channel_count;
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int file_count;
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size_t line_bytes;
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int whole_line_read = 0;
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off_t mus_offset = 0;
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int loop_end_index = -1;
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int loop_start_index = -1;
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int32_t loop_start_samples = -1;
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int32_t loop_end_samples = -1;
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int32_t total_samples = 0;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("mus",filename_extension(filename))) goto fail;
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/* read file name base */
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line_bytes = get_streamfile_dos_line(sizeof(line_buffer),line_buffer,
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mus_offset, streamFile, &whole_line_read);
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if (!whole_line_read) goto fail;
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mus_offset += line_bytes;
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memcpy(name_base,line_buffer,sizeof(name_base));
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/* uppercase name_base */
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{
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int i;
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for (i=0;name_base[i];i++) name_base[i]=toupper(name_base[i]);
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}
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/*printf("name base: %s\n",name_base);*/
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/* read track entry count */
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line_bytes = get_streamfile_dos_line(sizeof(line_buffer),line_buffer,
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mus_offset, streamFile, &whole_line_read);
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if (!whole_line_read) goto fail;
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if (line_buffer[0] == '\0') goto fail;
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mus_offset += line_bytes;
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file_count = strtol(line_buffer,&end_ptr,10);
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/* didn't parse whole line as an integer (optional opening whitespace) */
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if (*end_ptr != '\0') goto fail;
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/*printf("entries: %d\n",file_count);*/
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names = calloc(file_count,sizeof(names[0]));
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if (!names) goto fail;
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dir_name[0]='\0';
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concatn(sizeof(dir_name),dir_name,filename);
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{
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/* find directory name for the directory contianing the MUS */
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char * last_slash;
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last_slash = strrchr(dir_name,DIRSEP);
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if (last_slash != NULL) {
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/* trim off the file name */
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last_slash[1]='\0';
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} else {
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/* no dir name? annihilate! */
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dir_name[0] = '\0';
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}
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}
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/* can't do this until we have a file name */
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subdir_name[0]='\0';
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/* parse each entry */
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{
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char name[NAME_LENGTH];
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char loop_name_base_temp[NAME_LENGTH];
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char loop_name_temp[NAME_LENGTH];
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char loop_name_base[NAME_LENGTH];
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char loop_name[NAME_LENGTH];
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for (i=0;i<file_count;i++)
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{
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int fields_matched;
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line_bytes =
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get_streamfile_dos_line(sizeof(line_buffer),line_buffer,
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mus_offset, streamFile, &whole_line_read);
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if (!whole_line_read) goto fail;
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mus_offset += line_bytes;
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fields_matched = sscanf(line_buffer,"%s %s %s",name,
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loop_name_base_temp,loop_name_temp);
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if (fields_matched < 1) goto fail;
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if (fields_matched == 3 && loop_name_base[0] != '@')
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{
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int j;
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memcpy(loop_name,loop_name_temp,sizeof(loop_name));
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memcpy(loop_name_base,loop_name_base_temp,sizeof(loop_name_base));
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for (j=0;loop_name[j];j++) loop_name[j]=toupper(loop_name[j]);
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for (j=0;loop_name_base[j];j++) loop_name_base[j]=toupper(loop_name_base[j]);
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/* loop back entry */
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loop_end_index = i;
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}
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else
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{
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/* normal entry, ignoring the @TAG for now */
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}
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{
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/* uppercase */
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int j;
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for (j=0;j<strlen(name);j++) name[j]=toupper(name[j]);
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}
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/* try looking in the common directory */
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names[i][0] = '\0';
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concatn(sizeof(names[0]),names[i],dir_name);
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concatn(sizeof(names[0]),names[i],name);
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concatn(sizeof(names[0]),names[i],".ACM");
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if (!exists(names[i],streamFile)) {
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/* We can't test for the directory until we have a file name
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* to look for, so we do it here with the first file that seems to
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* be in a subdirectory */
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if (subdir_name[0]=='\0') {
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if (find_directory_name(name_base, dir_name, sizeof(subdir_name), subdir_name, name, filename, streamFile))
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goto fail;
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}
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names[i][0] = '\0';
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concatn(sizeof(names[0]),names[i],dir_name);
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concatn(sizeof(names[0]),names[i],subdir_name);
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concatn(sizeof(names[0]),names[i],name_base);
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concatn(sizeof(names[0]),names[i],name);
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concatn(sizeof(names[0]),names[i],".ACM");
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if (!exists(names[i],streamFile)) goto fail;
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}
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/*printf("%2d %s\n",i,names[i]);*/
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}
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if (loop_end_index != -1) {
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/* find the file to loop back to */
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char target_name[NAME_LENGTH];
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target_name[0]='\0';
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concatn(sizeof(target_name),target_name,dir_name);
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concatn(sizeof(target_name),target_name,subdir_name);
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concatn(sizeof(target_name),target_name,loop_name_base);
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concatn(sizeof(target_name),target_name,loop_name);
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concatn(sizeof(target_name),target_name,".ACM");
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for (i=0;i<file_count;i++) {
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if (!strcmp(target_name,names[i]))
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{
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loop_start_index = i;
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break;
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}
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}
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if (loop_start_index != -1) {
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/*printf("loop from %d to %d\n",loop_end_index,loop_start_index);*/
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/*if (loop_start_index < file_count-1) loop_start_index++;*/
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/*loop_end_index++;*/
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loop_flag = 1;
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}
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}
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}
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/* set up the struct to track the files */
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data = calloc(1,sizeof(mus_acm_codec_data));
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if (!data) goto fail;
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data->files = calloc(file_count,sizeof(ACMStream *));
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if (!data->files) {
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free(data); data = NULL;
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goto fail;
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}
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/* open each file... */
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for (i=0;i<file_count;i++) {
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/* gonna do this a little backwards, open and parse the file
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before creating the vgmstream */
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if (acm_open_decoder(&acm_stream,streamFile,names[i]) != ACM_OK) {
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goto fail;
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}
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data->files[i]=acm_stream;
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if (i==loop_start_index) loop_start_samples = total_samples;
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if (i==loop_end_index) loop_end_samples = total_samples;
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total_samples += acm_stream->total_values / acm_stream->info.channels;
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if (i>0) {
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if (acm_stream->info.channels != data->files[0]->info.channels ||
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acm_stream->info.rate != data->files[0]->info.rate) goto fail;
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}
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}
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if (i==loop_end_index) loop_end_samples = total_samples;
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channel_count = data->files[0]->info.channels;
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vgmstream = allocate_vgmstream(channel_count,loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = data->files[0]->info.rate;
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vgmstream->coding_type = coding_ACM;
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vgmstream->num_samples = total_samples;
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vgmstream->loop_start_sample = loop_start_samples;
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vgmstream->loop_end_sample = loop_end_samples;
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vgmstream->layout_type = layout_mus_acm;
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vgmstream->meta_type = meta_MUS_ACM;
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data->file_count = file_count;
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data->current_file = 0;
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data->loop_start_file = loop_start_index;
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data->loop_end_file = loop_end_index;
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/*data->end_file = -1;*/
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vgmstream->codec_data = data;
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free(names);
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return vgmstream;
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/* clean up anything we may have opened */
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fail:
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if (data) {
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int i;
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for (i=0;i<data->file_count;i++) {
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if (data->files[i]) {
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acm_close(data->files[i]);
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data->files[i] = NULL;
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}
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}
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}
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if (names) free(names);
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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