| 1 | #include "lib.h" |
| 2 | |
| 3 | const char *prog = "<unset>"; |
| 4 | |
| 5 | void set_prog(const char *p) |
| 6 | { const char *q = strrchr(p, '/'); prog = q ? q + 1 : p; } |
| 7 | |
| 8 | void vmoan(const char *fmt, va_list ap) |
| 9 | { fprintf(stderr, "%s: ", prog); vfprintf(stderr, fmt, ap); } |
| 10 | |
| 11 | __attribute__((format(printf, 1, 2))) |
| 12 | void moan(const char *fmt, ...) |
| 13 | { |
| 14 | va_list ap; |
| 15 | |
| 16 | va_start(ap, fmt); vmoan(fmt, ap); va_end(ap); |
| 17 | fputc('\n', stderr); |
| 18 | } |
| 19 | |
| 20 | __attribute__((noreturn, format(printf, 1, 2))) |
| 21 | void bail(const char *fmt, ...) |
| 22 | { |
| 23 | va_list ap; |
| 24 | |
| 25 | va_start(ap, fmt); vmoan(fmt, ap); va_end(ap); |
| 26 | fputc('\n', stderr); |
| 27 | exit(2); |
| 28 | } |
| 29 | |
| 30 | __attribute__((noreturn, format(printf, 2, 3))) |
| 31 | void bail_syserr(int err, const char *fmt, ...) |
| 32 | { |
| 33 | va_list ap; |
| 34 | |
| 35 | va_start(ap, fmt); vmoan(fmt, ap); va_end(ap); |
| 36 | if (err) fprintf(stderr, ": %s", strerror(errno)); |
| 37 | fputc('\n', stderr); |
| 38 | exit(2); |
| 39 | } |
| 40 | |
| 41 | void sit(double t) |
| 42 | { |
| 43 | struct timeval tv; |
| 44 | double whole = floor(t); |
| 45 | |
| 46 | if (t) { |
| 47 | tv.tv_sec = whole; tv.tv_usec = floor((t - whole)*1.0e6) + 1; |
| 48 | if (select(0, 0, 0, 0, &tv) < 0) bail_syserr(errno, "failed to sleep"); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | void carefully_write(int fd, const void *buf, size_t sz) |
| 53 | { |
| 54 | const unsigned char *p = buf; |
| 55 | ssize_t n; |
| 56 | |
| 57 | if (fd < 0) return; |
| 58 | while (sz) { |
| 59 | n = write(fd, p, sz); |
| 60 | if (n < 0) { |
| 61 | if (errno == EINTR) continue; |
| 62 | bail_syserr(errno, "failed to write to output file"); |
| 63 | } |
| 64 | if (!n) bail("unexpected short write to output file"); |
| 65 | p += n; sz -= n; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | void open_file_on_demand(const char *file, FILE **fp_inout, const char *what) |
| 70 | { |
| 71 | FILE *fp; |
| 72 | |
| 73 | if (!*fp_inout) { |
| 74 | fp = fopen(file, "w"); |
| 75 | if (!fp) bail_syserr(errno, "failed to open %s file `%s'", what, file); |
| 76 | fprintf(fp, "## %s\n\n", what); |
| 77 | *fp_inout = fp; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | void check_write(FILE *fp, const char *what) |
| 82 | { |
| 83 | fflush(fp); |
| 84 | if (ferror(fp)) bail_syserr(errno, "error writing %s file", what); |
| 85 | } |
| 86 | |
| 87 | void carefully_fclose(FILE *fp, const char *what) |
| 88 | { |
| 89 | if (fp && (ferror(fp) || fclose(fp))) |
| 90 | bail_syserr(errno, "error writing %s file", what); |
| 91 | } |
| 92 | |
| 93 | void store_filename(char *buf, ident id) |
| 94 | { |
| 95 | switch (id_kind(id)) { |
| 96 | case RAW: |
| 97 | sprintf(buf, "#<raw device>"); |
| 98 | break; |
| 99 | case IFO: |
| 100 | if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.IFO"); |
| 101 | else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.IFO", id_title(id)); |
| 102 | break; |
| 103 | case BUP: |
| 104 | if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.BUP"); |
| 105 | else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.BUP", id_title(id)); |
| 106 | break; |
| 107 | case VOB: |
| 108 | if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.VOB"); |
| 109 | else |
| 110 | sprintf(buf, "/VIDEO_TS/VTS_%02u_%u.VOB", id_title(id), id_part(id)); |
| 111 | break; |
| 112 | default: |
| 113 | abort(); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | struct progress_state progress = PROGRESS_STATE_INIT; |
| 118 | static struct banner_progress_item banner_progress; |
| 119 | |
| 120 | static void render_banner_progress(struct progress_item *item, |
| 121 | struct progress_render_state *render) |
| 122 | { |
| 123 | struct banner_progress_item *bi = (struct banner_progress_item *)item; |
| 124 | |
| 125 | progress_putleft(render, " %s", bi->msg); |
| 126 | progress_shownotice(render, 4, 7); |
| 127 | } |
| 128 | |
| 129 | void show_banner(const char *msg) |
| 130 | { |
| 131 | banner_progress._base.render = render_banner_progress; |
| 132 | progress_additem(&progress, &banner_progress._base); |
| 133 | banner_progress.msg = msg; |
| 134 | progress_update(&progress); |
| 135 | } |
| 136 | |
| 137 | void hide_banner(void) |
| 138 | { |
| 139 | if (!progress_removeitem(&progress, &banner_progress._base)) |
| 140 | progress_update(&progress); |
| 141 | } |
| 142 | |
| 143 | #ifdef notdef |
| 144 | static void logfn(void *p, dvd_logger_level_t lev, |
| 145 | const char *fmt, va_list ap) |
| 146 | { |
| 147 | switch (lev) { |
| 148 | case DVD_LOGGER_LEVEL_ERROR: |
| 149 | fprintf("%s (libdvdread error): ", prog); |
| 150 | break; |
| 151 | case DVD_LOGGER_LEVEL_WARN: |
| 152 | fprintf("%s (libdvdread warning): ", prog); |
| 153 | break; |
| 154 | default: |
| 155 | return; |
| 156 | } |
| 157 | vfprintf(stderr, fmt, ap); |
| 158 | fputc('\n', stderr); |
| 159 | } |
| 160 | static const dvd_logger_cb logger = { logfn }; |
| 161 | #endif |
| 162 | |
| 163 | void open_dvd(const char *device, int *fd_out, dvd_reader_t **dvd_out) |
| 164 | { |
| 165 | int fd; |
| 166 | dvd_reader_t *dvd; |
| 167 | int bannerp = 0; |
| 168 | |
| 169 | for (;;) { |
| 170 | fd = open(device, O_RDONLY); |
| 171 | if (fd >= 0 || errno != ENOMEDIUM) break; |
| 172 | if (!bannerp) { |
| 173 | show_banner("Waiting for disc to be inserted..."); |
| 174 | bannerp = 1; |
| 175 | } |
| 176 | sit(0.2); |
| 177 | } |
| 178 | if (bannerp) hide_banner(); |
| 179 | if (fd < 0) bail_syserr(errno, "failed to open device `%s'", device); |
| 180 | if (dvd_out) { |
| 181 | #ifdef notdef |
| 182 | dvd = DVDOpen2(0, &logger, device); |
| 183 | #else |
| 184 | dvd = DVDOpen(device); |
| 185 | #endif |
| 186 | if (!dvd) bail("failed to open DVD on `%s'", device); |
| 187 | *dvd_out = dvd; |
| 188 | } |
| 189 | if (fd_out) *fd_out = fd; |
| 190 | else close(fd); |
| 191 | } |