mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-04 18:05:06 +01:00
[Core/SCD] improved .cue file parsing
This commit is contained in:
EkeEke
parent
6635ab7ebf
commit
15d96065ba
159
core/cd_hw/cdd.c
159
core/cd_hw/cdd.c
@ -250,7 +250,7 @@ int cdd_load(char *filename, char *header)
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char fname[256];
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char line[128];
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char *ptr = 0;
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char *lptr;
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char *lptr = 0;
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FILE *fd;
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/* first unmount any loaded disc */
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@ -260,11 +260,7 @@ int cdd_load(char *filename, char *header)
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fd = fopen(filename, "rb");
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/* save a copy of base filename */
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if (strlen(filename) < 256)
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{
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strncpy(fname, filename, strlen(filename));
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fname[strlen(filename)] = 0;
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}
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strncpy(fname, filename, 256);
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/* autodetect .cue file */
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if (!memcmp(".cue", &filename[strlen(filename) - 4], 4) || !memcmp(".CUE", &filename[strlen(filename) - 4], 4))
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@ -272,7 +268,6 @@ int cdd_load(char *filename, char *header)
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if (fd)
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{
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/* find first FILE command */
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lptr = strstr(line, "FILE");
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while (!lptr)
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{
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if (fgets(line, 128, fd) == NULL)
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@ -297,7 +292,7 @@ int cdd_load(char *filename, char *header)
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if (ptr - fname) ptr++;
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/* append filename characters after filepath */
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while ((*lptr != '\"') && memcmp(lptr, " BINARY", 7))
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while ((*lptr != '\"') && memcmp(lptr, " BINARY", 7) && (ptr < (fname + 255)))
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{
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*ptr++ = *lptr++;
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}
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@ -352,6 +347,7 @@ int cdd_load(char *filename, char *header)
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/* close binary file */
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fclose(cdd.toc.tracks[0].fd);
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cdd.toc.tracks[0].fd = 0;
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/* not a CD image file */
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return 0;
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@ -369,11 +365,11 @@ int cdd_load(char *filename, char *header)
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/* read CD image header + security code */
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fread(header + 0x10, 0x200, 1, cdd.toc.tracks[0].fd);
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/* DATA track length (default) */
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/* DATA track start time (based on DATA file length) */
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fseek(cdd.toc.tracks[0].fd, 0, SEEK_END);
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cdd.toc.tracks[0].end = ftell(cdd.toc.tracks[0].fd) / cdd.sectorSize;
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/* DATA track start (logical block 0) */
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/* DATA track start time (logical block 0) */
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fseek(cdd.toc.tracks[0].fd, 0, SEEK_SET);
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cdd.toc.tracks[0].start = 0;
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@ -406,13 +402,6 @@ int cdd_load(char *filename, char *header)
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/* decode FILE commands */
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if (!(memcmp(lptr, "FILE", 4)))
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{
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/* check supported file types */
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if (!strstr(lptr," BINARY") && !strstr(lptr," WAV"))
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{
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/* unsupported file type */
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break;
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}
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/* skip "FILE" attribute */
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lptr += 4;
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@ -425,13 +414,13 @@ int cdd_load(char *filename, char *header)
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if (ptr - fname) ptr++;
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/* append filename characters after filepath */
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while ((*lptr != '\"') && memcmp(lptr, " BINARY", 7) && memcmp(lptr, " WAV", 4))
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while ((*lptr != '\"') && (lptr <= (line + 128)) && (ptr < (fname + 255)))
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{
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*ptr++ = *lptr++;
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}
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*ptr = 0;
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/* open file & initialize AUDIO track file descriptor */
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/* open file & initialize track file descriptor */
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cdd.toc.tracks[cdd.toc.last].fd = fopen(fname, "rb");
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if (!cdd.toc.tracks[cdd.toc.last].fd)
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{
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@ -441,6 +430,47 @@ int cdd_load(char *filename, char *header)
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/* reset current file PREGAP length */
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pregap = 0;
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/* reset current file read offset */
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cdd.toc.tracks[cdd.toc.last].offset = 0;
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/* check supported file types */
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if (!strstr(lptr,"BINARY"))
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{
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/* read file header */
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unsigned char head[32];
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 8, SEEK_SET);
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fread(head, 32, 1, cdd.toc.tracks[cdd.toc.last].fd);
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_SET);
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/* autodetect WAVE file header (16-bit stereo @44.1kHz only) */
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if (!memcmp(head, waveHeader, 32))
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{
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/* adjust current track file read offset with WAVE header length */
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cdd.toc.tracks[cdd.toc.last].offset -= 44;
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}
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#ifdef USE_LIBTREMOR
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else if (!ov_open(cdd.toc.tracks[cdd.toc.last].fd,&cdd.toc.tracks[cdd.toc.last].vf,0,0))
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{
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/* retrieve stream infos */
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vorbis_info *info = ov_info(&cdd.toc.tracks[cdd.toc.last].vf,-1);
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if (!info || (info->rate != 44100) || (info->channels != 2))
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{
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/* unsupported VORBIS file format (stereo @44.1kHz only) */
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ov_clear(&cdd.toc.tracks[cdd.toc.last].vf);
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cdd.toc.tracks[cdd.toc.last].fd = 0;
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break;
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}
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}
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#endif
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else
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{
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/* unsupported audio file */
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fclose(cdd.toc.tracks[cdd.toc.last].fd);
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cdd.toc.tracks[cdd.toc.last].fd = 0;
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break;
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}
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}
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}
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/* decode TRACK commands */
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@ -453,6 +483,7 @@ int cdd_load(char *filename, char *header)
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if (cdd.toc.tracks[cdd.toc.last].fd)
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{
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fclose(cdd.toc.tracks[cdd.toc.last].fd);
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cdd.toc.tracks[cdd.toc.last].fd = 0;
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}
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/* missing tracks */
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@ -462,7 +493,7 @@ int cdd_load(char *filename, char *header)
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/* check if a single file is used for all tracks */
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if (!cdd.toc.tracks[cdd.toc.last].fd)
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{
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/* clear previous track end index */
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/* clear previous track end time */
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cdd.toc.tracks[cdd.toc.last - 1].end = 0;
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}
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}
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@ -481,59 +512,71 @@ int cdd_load(char *filename, char *header)
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/* check if a single file is used for all tracks */
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if (!cdd.toc.tracks[cdd.toc.last].fd)
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{
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/* set previous track end index */
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/* set previous track end time */
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cdd.toc.tracks[cdd.toc.last - 1].end = bb + ss*75 + mm*60*75 + pregap;
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}
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}
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else if ((sscanf(lptr, "INDEX 01 %02d:%02d:%02d", &mm, &ss, &bb) == 3) ||
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(sscanf(lptr, "INDEX 1 %02d:%02d:%02d", &mm, &ss, &bb) == 3))
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{
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char id[4];
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/* set file read offset for current track with current file PREGAP length */
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cdd.toc.tracks[cdd.toc.last].offset = pregap * 2352;
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/* adjust file read offset for current track with current file PREGAP length */
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cdd.toc.tracks[cdd.toc.last].offset += pregap * 2352;
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/* check if a single file is used for all tracks */
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if (!cdd.toc.tracks[cdd.toc.last].fd)
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{
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/* previous track end index already set (through INDEX00 command) ? */
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if (cdd.toc.tracks[cdd.toc.last - 1].end == 0)
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{
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/* if not, set previous track end index */
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cdd.toc.tracks[cdd.toc.last - 1].end = bb + ss*75 + mm*60*75;
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}
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/* current track start index */
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cdd.toc.tracks[cdd.toc.last].start = bb + ss*75 + mm*60*75 + pregap;
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/* use common file descriptor */
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cdd.toc.tracks[cdd.toc.last].fd = cdd.toc.tracks[0].fd;
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/* current track start time (based on current absolute time) */
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cdd.toc.tracks[cdd.toc.last].start = bb + ss*75 + mm*60*75 + pregap;
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/* check if previous track end time has not been already set (through INDEX00 command) */
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if (cdd.toc.tracks[cdd.toc.last - 1].end == 0)
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{
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/* set previous track end time (based on current absolute timee) */
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cdd.toc.tracks[cdd.toc.last - 1].end = bb + ss*75 + mm*60*75;
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}
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}
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else
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{
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/* adjust file read offset with previous track end index */
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/* current track start time (based on previous track end time) */
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cdd.toc.tracks[cdd.toc.last].start = cdd.toc.end + bb + ss*75 + mm*60*75 + pregap;
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/* adjust file read offset with previous track end time */
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cdd.toc.tracks[cdd.toc.last].offset += cdd.toc.end * 2352;
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/* current track start index */
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cdd.toc.tracks[cdd.toc.last].start = (cdd.toc.tracks[cdd.toc.last].offset / 2352) + bb + ss*75 + mm*60*75;
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#ifdef USE_LIBTREMOR
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if (cdd.toc.tracks[cdd.toc.last].vf.datasource)
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{
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/* convert read offset to PCM sample offset */
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cdd.toc.tracks[cdd.toc.last].offset = cdd.toc.tracks[cdd.toc.last].offset / 4;
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/* current track end index */
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_END);
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cdd.toc.tracks[cdd.toc.last].end = cdd.toc.tracks[cdd.toc.last].start + ((ftell(cdd.toc.tracks[cdd.toc.last].fd) + 2351) / 2352);
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/* current track end time */
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cdd.toc.tracks[cdd.toc.last].end = cdd.toc.tracks[cdd.toc.last].start + ov_pcm_total(&cdd.toc.tracks[cdd.toc.last].vf,-1)/588;
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if (cdd.toc.tracks[cdd.toc.last].end <= cdd.toc.tracks[cdd.toc.last].start)
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{
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/* invalid length */
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ov_clear(&cdd.toc.tracks[cdd.toc.last].vf);
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cdd.toc.tracks[cdd.toc.last].fd = 0;
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cdd.toc.tracks[cdd.toc.last].end = 0;
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cdd.toc.tracks[cdd.toc.last].start = 0;
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cdd.toc.tracks[cdd.toc.last].offset = 0;
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break;
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}
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}
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else
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#endif
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{
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/* current track end time */
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_END);
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cdd.toc.tracks[cdd.toc.last].end = cdd.toc.tracks[cdd.toc.last].start + ((ftell(cdd.toc.tracks[cdd.toc.last].fd) + 2351) / 2352);
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_SET);
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}
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/* update TOC end */
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cdd.toc.end = cdd.toc.tracks[cdd.toc.last].end;
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}
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/* autodetect WAVE header (note: sometime found in BIN files as well) */
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fseek(cdd.toc.tracks[cdd.toc.last].fd, (cdd.toc.tracks[cdd.toc.last].start * 2352) - cdd.toc.tracks[cdd.toc.last].offset, SEEK_SET);
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fread(id, 4, 1, cdd.toc.tracks[cdd.toc.last].fd);
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if (!memcmp(id,"RIFF",4))
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{
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/* adjust current track file read offset with WAVE header length */
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cdd.toc.tracks[cdd.toc.last].offset -= 44;
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}
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_SET);
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/* increment track number */
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cdd.toc.last++;
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@ -598,13 +641,13 @@ int cdd_load(char *filename, char *header)
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/* initialize current track file descriptor */
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cdd.toc.tracks[cdd.toc.last].fd = fd;
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/* initialize current track start index with previous track end index */
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/* initialize current track start time (based on previous track end time) */
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cdd.toc.tracks[cdd.toc.last].start = cdd.toc.end;
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/* add default 2s PAUSE between tracks */
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cdd.toc.tracks[cdd.toc.last].start += 150;
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/* current track end index */
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/* current track end time */
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fseek(fd, 0, SEEK_END);
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cdd.toc.tracks[cdd.toc.last].end = cdd.toc.tracks[cdd.toc.last].start + ((ftell(fd) + 2351) / 2352);
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@ -614,13 +657,13 @@ int cdd_load(char *filename, char *header)
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/* auto-detect PAUSE within audio files */
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fseek(fd, 100 * 2352, SEEK_SET);
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fread(head, 4, 1, fd);
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fseek(fd, 0, SEEK_SET);
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if (*(int32 *)head == 0)
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{
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/* assume 2s PAUSE is included at the beginning of the file */
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cdd.toc.tracks[cdd.toc.last].offset -= 150 * 2352;
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cdd.toc.tracks[cdd.toc.last].end -= 150;
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}
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fseek(fd, 0, SEEK_SET);
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/* update TOC end */
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cdd.toc.end = cdd.toc.tracks[cdd.toc.last].end;
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@ -646,17 +689,17 @@ int cdd_load(char *filename, char *header)
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/* initialize current track file descriptor */
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cdd.toc.tracks[cdd.toc.last].fd = fd;
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/* initialize current track start index with previous track end index */
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/* initialize current track start time (based on previous track end time) */
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cdd.toc.tracks[cdd.toc.last].start = cdd.toc.end;
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/* add default 2s PAUSE between tracks */
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cdd.toc.tracks[cdd.toc.last].start += 150;
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/* current track end index */
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/* current track end time */
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cdd.toc.tracks[cdd.toc.last].end = cdd.toc.tracks[cdd.toc.last].start + ov_pcm_total(&cdd.toc.tracks[cdd.toc.last].vf,-1)/588;
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if (cdd.toc.tracks[cdd.toc.last].end <= cdd.toc.tracks[cdd.toc.last].start)
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{
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/* invalid length */
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/* invalid file length */
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ov_clear(&cdd.toc.tracks[cdd.toc.last].vf);
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cdd.toc.tracks[cdd.toc.last].fd = 0;
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cdd.toc.tracks[cdd.toc.last].end = 0;
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@ -667,13 +710,13 @@ int cdd_load(char *filename, char *header)
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/* auto-detect PAUSE within audio files */
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ov_pcm_seek(&cdd.toc.tracks[cdd.toc.last].vf, 100 * 588);
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ov_read(&cdd.toc.tracks[cdd.toc.last].vf, (char *)head, 32, 0);
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ov_pcm_seek(&cdd.toc.tracks[cdd.toc.last].vf, 0);
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if (*(int32 *)head == 0)
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{
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/* assume 2s PAUSE is included at the beginning of the file */
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cdd.toc.tracks[cdd.toc.last].offset -= 150 * 588;
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cdd.toc.tracks[cdd.toc.last].end -= 150;
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}
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ov_pcm_seek(&cdd.toc.tracks[cdd.toc.last].vf, 0);
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/* update TOC end */
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cdd.toc.end = cdd.toc.tracks[cdd.toc.last].end;
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