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https://github.com/vgmstream/vgmstream.git
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fecf28f0cf
Handle new VFSFile throwing an error correctly, which requires checking the m_impl status of VFSFile. Conveniently, there's a bool operator on the class exactly for that purpose.
110 lines
2.9 KiB
C++
110 lines
2.9 KiB
C++
#include <glib.h>
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#include <cstdlib>
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#include <libaudcore/plugin.h>
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#include "../src/vgmstream.h"
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#include "plugin.h"
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#include "vfs.h"
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typedef struct _VFSSTREAMFILE {
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STREAMFILE sf;
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VFSFile *vfsFile;
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off_t offset;
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char name[260];
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char realname[260];
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} VFSSTREAMFILE;
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static STREAMFILE *open_vfs_by_VFSFILE(VFSFile *file, const char *path);
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static size_t read_vfs(VFSSTREAMFILE *streamfile, uint8_t *dest, off_t offset,
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size_t length) {
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size_t sz;
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// if the offsets don't match, then we need to perform a seek
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if (streamfile->offset != offset) {
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streamfile->vfsFile->fseek(offset, VFS_SEEK_SET);
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streamfile->offset = offset;
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}
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sz = streamfile->vfsFile->fread(dest, 1, length);
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// increment our current offset
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streamfile->offset += sz;
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return sz;
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}
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static void close_vfs(VFSSTREAMFILE *streamfile) {
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debugMessage("close_vfs");
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free(streamfile->vfsFile);
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free(streamfile);
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}
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static size_t get_size_vfs(VFSSTREAMFILE *streamfile) {
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return streamfile->vfsFile->fsize();
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}
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static size_t get_offset_vfs(VFSSTREAMFILE *streamfile) {
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return streamfile->offset;
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}
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static void get_name_vfs(VFSSTREAMFILE *streamfile, char *buffer,
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size_t length) {
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strncpy(buffer, streamfile->name, length);
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buffer[length - 1] = '\0';
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}
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static void get_realname_vfs(VFSSTREAMFILE *streamfile, char *buffer,
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size_t length) {
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strncpy(buffer, streamfile->realname, length);
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buffer[length - 1] = '\0';
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}
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static STREAMFILE *open_vfs_impl(VFSSTREAMFILE *streamfile,
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const char *const filename,
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size_t buffersize) {
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if (!filename)
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return NULL;
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return open_vfs(filename);
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}
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STREAMFILE *open_vfs_by_VFSFILE(VFSFile *file, const char *path) {
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VFSSTREAMFILE *streamfile = (VFSSTREAMFILE *)malloc(sizeof(VFSSTREAMFILE));
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if (!streamfile)
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return NULL;
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// success, set our pointers
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memset(streamfile, 0, sizeof(VFSSTREAMFILE));
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streamfile->sf.read = read_vfs;
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streamfile->sf.get_size = get_size_vfs;
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streamfile->sf.get_offset = get_offset_vfs;
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streamfile->sf.get_name = get_name_vfs;
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streamfile->sf.get_realname = get_realname_vfs;
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streamfile->sf.open = open_vfs_impl;
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streamfile->sf.close = close_vfs;
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streamfile->vfsFile = file;
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streamfile->offset = 0;
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strncpy(streamfile->name, path, sizeof(streamfile->name));
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streamfile->name[sizeof(streamfile->name) - 1] = '\0';
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{
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gchar *realname = g_filename_from_uri(path, NULL, NULL);
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strncpy(streamfile->realname, realname, sizeof(streamfile->realname));
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streamfile->realname[sizeof(streamfile->realname) - 1] = '\0';
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g_free(realname);
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}
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return &streamfile->sf;
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}
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STREAMFILE *open_vfs(const char *path) {
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VFSFile *vfsFile = new VFSFile(path, "rb");
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if (!vfsFile || !*vfsFile) {
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delete vfsFile;
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return NULL;
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}
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return open_vfs_by_VFSFILE(vfsFile, path);
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}
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