mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-11 05:15:11 +01:00
logic
This commit is contained in:
Alberto Fustinoni
parent
f4808e1b74
commit
1a41bb1eed
139
core/cd_hw/cdd.c
139
core/cd_hw/cdd.c
@ -36,6 +36,7 @@
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*
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****************************************************************************************/
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#include "shared.h"
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#include "streams/file_stream.h"
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#if defined(USE_LIBTREMOR) || defined(USE_LIBVORBIS)
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#define SUPPORTED_EXT 20
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@ -170,7 +171,7 @@ static void ogg_free(int i)
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cdd.toc.tracks[i].vf.seekable = 1;
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/* reset file reading position */
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fseek(cdd.toc.tracks[i].fd, 0, SEEK_SET);
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filestream_seek(cdd.toc.tracks[i].fd, 0, SEEK_SET);
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}
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#endif
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#endif
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@ -255,14 +256,14 @@ int cdd_context_load(uint8 *state)
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if (cdd.toc.sub)
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{
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/* 96 bytes per sector */
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fseek(cdd.toc.sub, lba * 96, SEEK_SET);
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filestream_seek(cdd.toc.sub, lba * 96, SEEK_SET);
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}
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/* seek to current track position */
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if (cdd.toc.tracks[cdd.index].type)
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{
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/* DATA track */
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fseek(cdd.toc.tracks[cdd.index].fd, lba * cdd.sectorSize, SEEK_SET);
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filestream_seek(cdd.toc.tracks[cdd.index].fd, lba * cdd.sectorSize, SEEK_SET);
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}
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#if defined(USE_LIBTREMOR) || defined(USE_LIBVORBIS)
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else if (cdd.toc.tracks[cdd.index].vf.seekable)
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@ -278,7 +279,7 @@ int cdd_context_load(uint8 *state)
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else if (cdd.toc.tracks[cdd.index].fd)
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{
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/* PCM AUDIO track */
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fseek(cdd.toc.tracks[cdd.index].fd, (lba * 2352) - cdd.toc.tracks[cdd.index].offset, SEEK_SET);
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filestream_seek(cdd.toc.tracks[cdd.index].fd, (lba * 2352) - cdd.toc.tracks[cdd.index].offset, SEEK_SET);
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}
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return bufferptr;
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@ -298,7 +299,7 @@ int cdd_load(char *filename, char *header)
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cdd_unload();
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/* open file */
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fd = fopen(filename, "rb");
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fd = filestream_open(filename, RFILE_MODE_READ, -1);
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if (!fd) return (-1);
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/* save a copy of base filename */
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@ -310,7 +311,7 @@ int cdd_load(char *filename, char *header)
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int len;
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/* read first 16 bytes */
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fread(header, 0x10, 1, fd);
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filestream_read(fd, header, 0x10);
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/* look for valid CD image identifier */
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if (!memcmp("SEGADISCSYSTEM", header, 14))
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@ -321,7 +322,7 @@ int cdd_load(char *filename, char *header)
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else
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{
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/* read next 16 bytes */
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fread(header, 0x10, 1, fd);
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filestream_read(fd, header, 0x10);
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/* look for valid CD image identifier */
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if (!memcmp("SEGADISCSYSTEM", header, 14))
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@ -335,7 +336,7 @@ int cdd_load(char *filename, char *header)
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if (cdd.sectorSize)
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{
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/* read CD image header + security code */
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fread(header + 0x10, 0x200, 1, fd);
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filestream_read(fd, header + 0x10, 0x200);
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/* initialize first track file descriptor */
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cdd.toc.tracks[0].fd = fd;
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@ -344,8 +345,8 @@ int cdd_load(char *filename, char *header)
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cdd.toc.tracks[0].type = TYPE_CDROM;
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/* DATA track end LBA (based on DATA file length) */
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fseek(fd, 0, SEEK_END);
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cdd.toc.tracks[0].end = ftell(fd) / cdd.sectorSize;
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filestream_seek(fd, 0, SEEK_END);
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cdd.toc.tracks[0].end = filestream_tell(fd) / cdd.sectorSize;
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/* DATA track length should be at least 2s (BIOS requirement) */
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if (cdd.toc.tracks[0].end < 150)
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@ -354,7 +355,7 @@ int cdd_load(char *filename, char *header)
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}
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/* DATA track start LBA (logical block 0) */
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fseek(fd, 0, SEEK_SET);
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filestream_seek(fd, 0, SEEK_SET);
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cdd.toc.tracks[0].start = 0;
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/* initialize TOC */
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@ -367,14 +368,14 @@ int cdd_load(char *filename, char *header)
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isCDfile = 0;
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/* close file */
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fclose(fd);
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filestream_close(fd);
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}
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/* automatically try to mount CD associated CUE file */
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len = strlen(fname);
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while ((len && (fname[len] != '.')) || (len > 251)) len--;
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strcpy(&fname[len], ".cue");
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fd = fopen(fname, "rb");
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fd = filestream_open(fname, RFILE_MODE_READ, -1);
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}
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/* parse CUE file */
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@ -431,7 +432,7 @@ int cdd_load(char *filename, char *header)
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*ptr = 0;
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/* open current track file descriptor */
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cdd.toc.tracks[cdd.toc.last].fd = fopen(fname, "rb");
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cdd.toc.tracks[cdd.toc.last].fd = filestream_open(fname, RFILE_MODE_READ, -1);
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if (!cdd.toc.tracks[cdd.toc.last].fd)
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{
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/* error opening file */
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@ -449,32 +450,32 @@ int cdd_load(char *filename, char *header)
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{
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/* read file header */
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unsigned char head[28];
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 8, SEEK_SET);
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fread(head, 28, 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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filestream_seek(cdd.toc.tracks[cdd.toc.last].fd, 8, SEEK_SET);
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filestream_read(cdd.toc.tracks[cdd.toc.last].fd, head, 28);
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filestream_seek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_SET);
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/* autodetect WAVE file header (44.1KHz 16-bit stereo format only) */
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if (!memcmp(head, waveHeader, 28))
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{
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/* look for 'data' chunk id */
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int dataOffset = 0;
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 36, SEEK_SET);
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while (fread(head, 4, 1, cdd.toc.tracks[cdd.toc.last].fd))
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filestream_seek(cdd.toc.tracks[cdd.toc.last].fd, 36, SEEK_SET);
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while (filestream_read(cdd.toc.tracks[cdd.toc.last].fd, head, 4))
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{
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if (!memcmp(head, "data", 4))
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{
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dataOffset = ftell(cdd.toc.tracks[cdd.toc.last].fd) + 4;
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_SET);
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dataOffset = filestream_tell(cdd.toc.tracks[cdd.toc.last].fd) + 4;
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filestream_seek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_SET);
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break;
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}
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fseek(cdd.toc.tracks[cdd.toc.last].fd, -2, SEEK_CUR);
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filestream_seek(cdd.toc.tracks[cdd.toc.last].fd, -2, SEEK_CUR);
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}
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/* check if 'data' chunk has not been found */
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if (!dataOffset)
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{
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/* invalid WAVE file */
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fclose(cdd.toc.tracks[cdd.toc.last].fd);
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filestream_close(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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@ -499,7 +500,7 @@ int cdd_load(char *filename, char *header)
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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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filestream_close(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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@ -515,7 +516,7 @@ int cdd_load(char *filename, char *header)
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/* close any opened file */
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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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filestream_close(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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@ -538,7 +539,7 @@ int cdd_load(char *filename, char *header)
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cdd.sectorSize = 2352;
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/* skip 16-byte header */
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fseek(cdd.toc.tracks[0].fd, 0x10, SEEK_SET);
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filestream_seek(cdd.toc.tracks[0].fd, 0x10, SEEK_SET);
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}
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if (cdd.sectorSize)
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@ -547,8 +548,8 @@ int cdd_load(char *filename, char *header)
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cdd.toc.tracks[0].type = TYPE_CDROM;
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/* read CD image header + security code */
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fread(header, 0x210, 1, cdd.toc.tracks[0].fd);
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fseek(cdd.toc.tracks[0].fd, 0, SEEK_SET);
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filestream_read(cdd.toc.tracks[0].fd, header, 0x210);
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filestream_seek(cdd.toc.tracks[0].fd, 0, SEEK_SET);
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}
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}
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else
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@ -638,18 +639,18 @@ int cdd_load(char *filename, char *header)
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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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filestream_seek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_END);
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if (cdd.toc.tracks[cdd.toc.last].type)
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{
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/* DATA track length */
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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) + cdd.sectorSize - 1) / cdd.sectorSize);
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cdd.toc.tracks[cdd.toc.last].end = cdd.toc.tracks[cdd.toc.last].start + ((filestream_tell(cdd.toc.tracks[cdd.toc.last].fd) + cdd.sectorSize - 1) / cdd.sectorSize);
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}
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else
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{
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/* AUDIO track length */
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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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cdd.toc.tracks[cdd.toc.last].end = cdd.toc.tracks[cdd.toc.last].start + ((filestream_tell(cdd.toc.tracks[cdd.toc.last].fd) + 2351) / 2352);
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}
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fseek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_SET);
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filestream_seek(cdd.toc.tracks[cdd.toc.last].fd, 0, SEEK_SET);
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}
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/* adjust track start time (based on current file start time + index absolute time) */
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@ -687,11 +688,11 @@ int cdd_load(char *filename, char *header)
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#endif
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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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filestream_close(cdd.toc.tracks[cdd.toc.last].fd);
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}
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/* close CUE file */
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fclose(fd);
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filestream_close(fd);
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}
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else
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{
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@ -705,7 +706,7 @@ int cdd_load(char *filename, char *header)
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{
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/* auto-detect wrong initial track index */
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sprintf(ptr, extensions[i], cdd.toc.last);
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fd = fopen(fname, "rb");
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fd = filestream_open(fname, RFILE_MODE_READ, -1);
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if (fd)
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{
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offset = 0;
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@ -713,7 +714,7 @@ int cdd_load(char *filename, char *header)
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}
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sprintf(ptr, extensions[i], cdd.toc.last + 1);
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fd = fopen(fname, "rb");
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fd = filestream_open(fname, RFILE_MODE_READ, -1);
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if (fd) break;
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}
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@ -722,31 +723,31 @@ int cdd_load(char *filename, char *header)
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{
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/* read file HEADER */
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unsigned char head[28];
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fseek(fd, 8, SEEK_SET);
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fread(head, 28, 1, fd);
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fseek(fd, 0, SEEK_SET);
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filestream_seek(fd, 8, SEEK_SET);
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filestream_read(fd, head, 28);
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filestream_seek(fd, 0, SEEK_SET);
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/* check if this is a valid WAVE file (44.1KHz 16-bit stereo format only) */
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if (!memcmp(head, waveHeader, 28))
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{
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/* look for 'data' chunk id */
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int dataOffset = 0;
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fseek(fd, 36, SEEK_SET);
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while (fread(head, 4, 1, fd))
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filestream_seek(fd, 36, SEEK_SET);
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while (filestream_read(fd, head, 4))
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{
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if (!memcmp(head, "data", 4))
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{
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dataOffset = ftell(fd) + 4;
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dataOffset = filestream_tell(fd) + 4;
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break;
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}
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fseek(fd, -2, SEEK_CUR);
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filestream_seek(fd, -2, SEEK_CUR);
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}
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/* check if 'data' chunk has not been found */
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if (!dataOffset)
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{
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/* invalid WAVE file */
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fclose(fd);
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filestream_close(fd);
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break;
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}
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@ -760,16 +761,16 @@ int cdd_load(char *filename, char *header)
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cdd.toc.tracks[cdd.toc.last].start += 150;
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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) - dataOffset + 2351) / 2352);
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filestream_seek(fd, 0, SEEK_END);
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cdd.toc.tracks[cdd.toc.last].end = cdd.toc.tracks[cdd.toc.last].start + ((filestream_tell(fd) - dataOffset + 2351) / 2352);
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/* initialize file read offset for current track */
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cdd.toc.tracks[cdd.toc.last].offset = cdd.toc.tracks[cdd.toc.last].start * 2352;
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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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filestream_seek(fd, 100 * 2352, SEEK_SET);
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filestream_read(fd, head, 4);
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filestream_seek(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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@ -852,7 +853,7 @@ int cdd_load(char *filename, char *header)
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else
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{
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/* unsupported audio file format */
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fclose(fd);
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filestream_close(fd);
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break;
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}
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@ -861,7 +862,7 @@ int cdd_load(char *filename, char *header)
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/* try to open next audio track file */
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sprintf(ptr, extensions[i], cdd.toc.last + offset);
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fd = fopen(fname, "rb");
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fd = filestream_open(fname, RFILE_MODE_READ, -1);
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}
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}
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@ -976,7 +977,7 @@ int cdd_load(char *filename, char *header)
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/* Automatically try to open associated subcode data file */
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strncpy(&fname[strlen(fname) - 4], ".sub", 4);
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cdd.toc.sub = fopen(fname, "rb");
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cdd.toc.sub = filestream_open(fname, RFILE_MODE_READ, -1);
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/* return 1 if loaded file is CD image file */
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return (isCDfile);
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@ -1014,13 +1015,13 @@ void cdd_unload(void)
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else
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{
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/* close file */
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fclose(cdd.toc.tracks[i].fd);
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filestream_close(cdd.toc.tracks[i].fd);
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}
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}
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}
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/* close any opened subcode file */
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if (cdd.toc.sub) fclose(cdd.toc.sub);
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if (cdd.toc.sub) filestream_close(cdd.toc.sub);
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/* CD unloaded */
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cdd.loaded = 0;
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@ -1042,16 +1043,16 @@ void cdd_read_data(uint8 *dst)
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if (cdd.sectorSize == 2048)
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{
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/* Mode 1 COOKED data (ISO) */
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fseek(cdd.toc.tracks[0].fd, cdd.lba * 2048, SEEK_SET);
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filestream_seek(cdd.toc.tracks[0].fd, cdd.lba * 2048, SEEK_SET);
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}
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else
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{
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/* Mode 1 RAW data (skip 16-byte header) */
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fseek(cdd.toc.tracks[0].fd, cdd.lba * 2352 + 16, SEEK_SET);
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filestream_seek(cdd.toc.tracks[0].fd, cdd.lba * 2352 + 16, SEEK_SET);
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}
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/* read sector data (Mode 1 = 2048 bytes) */
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fread(dst, 2048, 1, cdd.toc.tracks[0].fd);
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filestream_read(cdd.toc.tracks[0].fd, dst, 2048);
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}
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}
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@ -1139,7 +1140,7 @@ void cdd_read_audio(unsigned int samples)
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#else
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uint8 *ptr = cdc.ram;
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#endif
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fread(cdc.ram, 1, samples * 4, cdd.toc.tracks[cdd.index].fd);
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filestream_read(cdd.toc.tracks[cdd.index].fd, cdc.ram, samples * 4);
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/* process 16-bit (little-endian) stereo samples */
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for (i=0; i<samples; i++)
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@ -1217,7 +1218,7 @@ static void cdd_read_subcode(void)
|
||||
index = (scd.regs[0x68>>1].byte.l + 0x100) >> 1;
|
||||
|
||||
/* read interleaved subcode data from .sub file (12 x 8-bit of P subchannel first, then Q subchannel, etc) */
|
||||
fread(subc, 1, 96, cdd.toc.sub);
|
||||
filestream_read(cdd.toc.sub, subc, 96);
|
||||
|
||||
/* convert back to raw subcode format (96 bytes with 8 x P-W subchannel bits per byte) */
|
||||
for (i=0; i<96; i+=2)
|
||||
@ -1353,7 +1354,7 @@ void cdd_update(void)
|
||||
#endif
|
||||
if (cdd.toc.tracks[cdd.index].fd)
|
||||
{
|
||||
fseek(cdd.toc.tracks[cdd.index].fd, (cdd.toc.tracks[cdd.index].start * 2352) - cdd.toc.tracks[cdd.index].offset, SEEK_SET);
|
||||
filestream_seek(cdd.toc.tracks[cdd.index].fd, (cdd.toc.tracks[cdd.index].start * 2352) - cdd.toc.tracks[cdd.index].offset, SEEK_SET);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1431,14 +1432,14 @@ void cdd_update(void)
|
||||
/* seek to current subcode position */
|
||||
if (cdd.toc.sub)
|
||||
{
|
||||
fseek(cdd.toc.sub, cdd.lba * 96, SEEK_SET);
|
||||
filestream_seek(cdd.toc.sub, cdd.lba * 96, SEEK_SET);
|
||||
}
|
||||
|
||||
/* seek to current track position */
|
||||
if (cdd.toc.tracks[cdd.index].type)
|
||||
{
|
||||
/* DATA track */
|
||||
fseek(cdd.toc.tracks[0].fd, cdd.lba * cdd.sectorSize, SEEK_SET);
|
||||
filestream_seek(cdd.toc.tracks[0].fd, cdd.lba * cdd.sectorSize, SEEK_SET);
|
||||
}
|
||||
#if defined(USE_LIBTREMOR) || defined(USE_LIBVORBIS)
|
||||
else if (cdd.toc.tracks[cdd.index].vf.seekable)
|
||||
@ -1458,7 +1459,7 @@ void cdd_update(void)
|
||||
else if (cdd.toc.tracks[cdd.index].fd)
|
||||
{
|
||||
/* PCM AUDIO track */
|
||||
fseek(cdd.toc.tracks[cdd.index].fd, (cdd.lba * 2352) - cdd.toc.tracks[cdd.index].offset, SEEK_SET);
|
||||
filestream_seek(cdd.toc.tracks[cdd.index].fd, (cdd.lba * 2352) - cdd.toc.tracks[cdd.index].offset, SEEK_SET);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1659,14 +1660,14 @@ void cdd_process(void)
|
||||
/* seek to current subcode position */
|
||||
if (cdd.toc.sub)
|
||||
{
|
||||
fseek(cdd.toc.sub, lba * 96, SEEK_SET);
|
||||
filestream_seek(cdd.toc.sub, lba * 96, SEEK_SET);
|
||||
}
|
||||
|
||||
/* seek to current track position */
|
||||
if (cdd.toc.tracks[index].type)
|
||||
{
|
||||
/* DATA track */
|
||||
fseek(cdd.toc.tracks[0].fd, lba * cdd.sectorSize, SEEK_SET);
|
||||
filestream_seek(cdd.toc.tracks[0].fd, lba * cdd.sectorSize, SEEK_SET);
|
||||
}
|
||||
#if defined(USE_LIBTREMOR) || defined(USE_LIBVORBIS)
|
||||
else if (cdd.toc.tracks[index].vf.seekable)
|
||||
@ -1678,7 +1679,7 @@ void cdd_process(void)
|
||||
else if (cdd.toc.tracks[index].fd)
|
||||
{
|
||||
/* PCM AUDIO track */
|
||||
fseek(cdd.toc.tracks[index].fd, (lba * 2352) - cdd.toc.tracks[index].offset, SEEK_SET);
|
||||
filestream_seek(cdd.toc.tracks[index].fd, (lba * 2352) - cdd.toc.tracks[index].offset, SEEK_SET);
|
||||
}
|
||||
|
||||
/* no audio track playing (yet) */
|
||||
@ -1758,7 +1759,7 @@ void cdd_process(void)
|
||||
if (cdd.toc.tracks[index].type)
|
||||
{
|
||||
/* DATA track */
|
||||
fseek(cdd.toc.tracks[0].fd, lba * cdd.sectorSize, SEEK_SET);
|
||||
filestream_seek(cdd.toc.tracks[0].fd, lba * cdd.sectorSize, SEEK_SET);
|
||||
}
|
||||
#if defined(USE_LIBTREMOR) || defined(USE_LIBVORBIS)
|
||||
else if (cdd.toc.tracks[index].vf.seekable)
|
||||
@ -1770,13 +1771,13 @@ void cdd_process(void)
|
||||
else if (cdd.toc.tracks[index].fd)
|
||||
{
|
||||
/* PCM AUDIO track */
|
||||
fseek(cdd.toc.tracks[index].fd, (lba * 2352) - cdd.toc.tracks[index].offset, SEEK_SET);
|
||||
filestream_seek(cdd.toc.tracks[index].fd, (lba * 2352) - cdd.toc.tracks[index].offset, SEEK_SET);
|
||||
}
|
||||
|
||||
/* seek to current subcode position */
|
||||
if (cdd.toc.sub)
|
||||
{
|
||||
fseek(cdd.toc.sub, lba * 96, SEEK_SET);
|
||||
filestream_seek(cdd.toc.sub, lba * 96, SEEK_SET);
|
||||
}
|
||||
|
||||
/* no audio track playing */
|
||||
|
||||
@ -61,10 +61,12 @@
|
||||
|
||||
#define CD_MAX_TRACKS 100
|
||||
|
||||
typedef struct RFILE RFILE;
|
||||
|
||||
/* CD track */
|
||||
typedef struct
|
||||
{
|
||||
FILE *fd;
|
||||
RFILE *fd;
|
||||
#if defined(USE_LIBTREMOR) || defined(USE_LIBVORBIS)
|
||||
OggVorbis_File vf;
|
||||
#endif
|
||||
@ -80,7 +82,7 @@ typedef struct
|
||||
int end;
|
||||
int last;
|
||||
track_t tracks[CD_MAX_TRACKS];
|
||||
FILE *sub;
|
||||
RFILE *sub;
|
||||
} toc_t;
|
||||
|
||||
/* CDD hardware */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user