mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-09-24 03:08:21 +02:00
133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/**
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* streamfile for Winamp
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*/
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#include <stdio.h>
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#include <io.h>
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#include "in_vgmstream.h"
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/* ************************************* */
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/* IN_UNICODE */
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/* ************************************* */
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/* opens a utf16 (unicode) path */
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static FILE* wa_fopen(const in_char* wpath) {
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#ifdef UNICODE_INPUT_PLUGIN
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return _wfopen(wpath, L"rb");
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#else
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return fopen(wpath, "rb");
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#endif
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}
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/* in theory fdopen and _wfdopen are the same, except flags is a wchar */
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#if 0
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/* dupes a utf16 (unicode) file */
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static FILE* wa_fdopen(int fd) {
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#ifdef UNICODE_INPUT_PLUGIN
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return _wfdopen(fd,L"rb");
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#else
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return fdopen(fd,"rb");
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#endif
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}
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#endif
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/* ************************************* */
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/* IN_STREAMFILE */
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/* ************************************* */
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/* a STREAMFILE that operates via STDIOSTREAMFILE but handles Winamp's unicode (in_char) paths */
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typedef struct {
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STREAMFILE vt;
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STREAMFILE* stdiosf;
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} WINAMP_STREAMFILE;
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static STREAMFILE* open_winamp_streamfile_by_file(FILE* infile, const char* path);
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//static STREAMFILE* open_winamp_streamfile_by_ipath(const in_char* wpath);
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static size_t wasf_read(WINAMP_STREAMFILE* sf, uint8_t* dst, offv_t offset, size_t length) {
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return sf->stdiosf->read(sf->stdiosf, dst, offset, length);
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}
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static size_t wasf_get_size(WINAMP_STREAMFILE* sf) {
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return sf->stdiosf->get_size(sf->stdiosf);
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}
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static offv_t wasf_get_offset(WINAMP_STREAMFILE* sf) {
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return sf->stdiosf->get_offset(sf->stdiosf);
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}
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static void wasf_get_name(WINAMP_STREAMFILE* sf, char* buffer, size_t length) {
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sf->stdiosf->get_name(sf->stdiosf, buffer, length);
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}
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static STREAMFILE* wasf_open(WINAMP_STREAMFILE* sf, const char* const filename, size_t buffersize) {
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in_char wpath[WINAMP_PATH_LIMIT];
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if (!filename)
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return NULL;
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/* no need to wfdopen here, may use standard IO */
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/* STREAMFILEs carry char/UTF8 names, convert to wchar for Winamp */
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wa_char_to_ichar(wpath, WINAMP_PATH_LIMIT, filename);
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return open_winamp_streamfile_by_ipath(wpath);
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}
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static void wasf_close(WINAMP_STREAMFILE* sf) {
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/* closes infile_ref + frees in the internal STDIOSTREAMFILE (fclose for wchar is not needed) */
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sf->stdiosf->close(sf->stdiosf);
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free(sf); /* and the current struct */
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}
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static STREAMFILE* open_winamp_streamfile_by_file(FILE* file, const char* path) {
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WINAMP_STREAMFILE* this_sf = NULL;
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STREAMFILE* stdiosf = NULL;
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this_sf = calloc(1,sizeof(WINAMP_STREAMFILE));
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if (!this_sf) goto fail;
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stdiosf = open_stdio_streamfile_by_file(file, path);
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if (!stdiosf) goto fail;
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this_sf->vt.read = (void*)wasf_read;
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this_sf->vt.get_size = (void*)wasf_get_size;
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this_sf->vt.get_offset = (void*)wasf_get_offset;
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this_sf->vt.get_name = (void*)wasf_get_name;
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this_sf->vt.open = (void*)wasf_open;
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this_sf->vt.close = (void*)wasf_close;
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this_sf->stdiosf = stdiosf;
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return &this_sf->vt;
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fail:
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close_streamfile(stdiosf);
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free(this_sf);
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return NULL;
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}
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STREAMFILE* open_winamp_streamfile_by_ipath(const in_char* wpath) {
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FILE* infile = NULL;
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STREAMFILE* sf;
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char path[WINAMP_PATH_LIMIT];
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/* convert to UTF-8 if needed for internal use */
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wa_ichar_to_char(path, WINAMP_PATH_LIMIT, wpath);
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/* open a FILE from a Winamp (possibly UTF-16) path */
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infile = wa_fopen(wpath);
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if (!infile) {
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/* allow non-existing files in some cases */
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if (!vgmstream_is_virtual_filename(path))
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return NULL;
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}
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sf = open_winamp_streamfile_by_file(infile, path);
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if (!sf) {
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if (infile) fclose(infile);
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}
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return sf;
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}
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