1 /* Copyright (C) 2008 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
3 /** \file afh.c Paraslash's standalone audio format handler tool. */
16 /** Array of error strings. */
19 static struct lls_parse_result *lpr;
21 #define CMD_PTR (lls_cmd(0, afh_suite))
22 #define OPT_RESULT(_name) (lls_opt_result(LSG_AFH_PARA_AFH_OPT_ ## _name, lpr))
23 #define OPT_GIVEN(_name) (lls_opt_given(OPT_RESULT(_name)))
24 #define OPT_STRING_VAL(_name) (lls_string_val(0, OPT_RESULT(_name)))
25 #define OPT_UINT32_VAL(_name) (lls_uint32_val(0, OPT_RESULT(_name)))
28 INIT_STDERR_LOGGING(loglevel)
30 static inline bool tag_needs_update(bool given, const char *tag,
33 return given && (!tag || strcmp(tag, arg) != 0);
36 static int rewrite_tags(const char *name, int input_fd, void *map,
37 size_t map_size, int audio_format_id, struct afh_info *afhi)
39 struct taginfo *tags = &afhi->tags;
40 bool modified = false;
43 int output_fd = -1, ret;
46 arg = OPT_STRING_VAL(YEAR);
47 if (tag_needs_update(OPT_GIVEN(YEAR), tags->year, arg)) {
49 tags->year = para_strdup(arg);
52 arg = OPT_STRING_VAL(TITLE);
53 if (tag_needs_update(OPT_GIVEN(TITLE), tags->title, arg)) {
55 tags->title = para_strdup(arg);
58 arg = OPT_STRING_VAL(ARTIST);
59 if (tag_needs_update(OPT_GIVEN(ARTIST), tags->artist, arg)) {
61 tags->artist = para_strdup(arg);
64 arg = OPT_STRING_VAL(ALBUM);
65 if (tag_needs_update(OPT_GIVEN(ALBUM), tags->album, arg)) {
67 tags->album = para_strdup(arg);
70 arg = OPT_STRING_VAL(COMMENT);
71 if (tag_needs_update(OPT_GIVEN(COMMENT), tags->comment, arg)) {
73 tags->comment = para_strdup(arg);
77 PARA_WARNING_LOG("no modifications necessary\n");
81 * mkstmp() creates the temporary file with permissions 0600, but we
82 * like it to have the same permissions as the original file, so we
83 * have to get this information.
85 if (fstat(input_fd, &sb) < 0) {
86 ret = -ERRNO_TO_PARA_ERROR(errno);
87 PARA_ERROR_LOG("failed to fstat fd %d (%s)\n", input_fd, name);
90 tmp_name = make_message("%s.XXXXXX", name);
91 ret = mkstemp(tmp_name);
93 ret = -ERRNO_TO_PARA_ERROR(errno);
94 PARA_ERROR_LOG("could not create temporary file\n");
98 if (fchmod(output_fd, sb.st_mode) < 0) {
99 ret = -ERRNO_TO_PARA_ERROR(errno);
100 PARA_ERROR_LOG("failed to fchmod fd %d (%s)\n", output_fd,
104 ret = afh_rewrite_tags(audio_format_id, map, map_size, tags, output_fd,
108 if (OPT_GIVEN(BACKUP)) {
109 char *backup_name = make_message("%s~", name);
110 ret = xrename(name, backup_name);
115 ret = xrename(tmp_name, name);
118 if (OPT_GIVEN(PRESERVE)) {
119 struct timespec times[2]; /* [0]: atime, [1]: mtime */
120 times[0].tv_nsec = UTIME_OMIT;
121 times[1] = sb.st_mtim;
123 * We might well have written a file of identical size. If we
124 * keep the mtime as well, we might fool backup applications
125 * like rsync which skip files whose size and mtime haven't
126 * changed. So we change the mtime slightly.
129 if (futimens(output_fd, times) < 0) {
130 ret = -ERRNO_TO_PARA_ERROR(errno);
135 if (ret < 0 && output_fd >= 0)
136 unlink(tmp_name); /* ignore errors */
143 static void print_info(int audio_format_num, struct afh_info *afhi)
147 afh_get_afhi_txt(audio_format_num, afhi, &msg);
152 static void print_chunk_table(struct afh_info *afhi, int audio_format_id,
153 const void *map, size_t mapsize)
158 for (i = 0; i < afhi->chunks_total; i++) {
160 long unsigned from, to;
163 tv_scale(i, &afhi->chunk_tv, &tv);
165 tv_scale(i + 1, &afhi->chunk_tv, &tv);
167 ret = afh_get_chunk(i, afhi, audio_format_id, map, mapsize,
170 PARA_ERROR_LOG("fatal: chunk %d: %s\n", i,
171 para_strerror(-ret));
174 if (!OPT_GIVEN(PARSER_FRIENDLY))
175 printf("%d [%lu.%03lu - %lu.%03lu] ", i, from / 1000,
176 from % 1000, to / 1000, to % 1000);
177 printf("%td - %td", buf - (const char *)map,
178 buf + len - (const char *)map);
179 if (!OPT_GIVEN(PARSER_FRIENDLY))
180 printf(" (%u)", len);
183 afh_close(ctx, audio_format_id);
186 static void handle_help_flags(void)
190 if (OPT_GIVEN(DETAILED_HELP))
191 help = lls_long_help(CMD_PTR);
192 else if (OPT_GIVEN(HELP) || lls_num_inputs(lpr) == 0)
193 help = lls_short_help(CMD_PTR);
198 printf("Supported audio formats\n %s\n", AUDIO_FORMAT_HANDLERS);
203 * The main function of para_afh.
205 * \param argc Usual argument count.
206 * \param argv Usual argument vector.
208 * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
210 int main(int argc, char **argv)
212 int i, ret = 0, audio_format_num, fd;
213 void *audio_file_data;
214 size_t audio_file_size;
215 struct afh_info afhi;
218 ret = lls(lls_parse(argc, argv, CMD_PTR, &lpr, &errctx));
221 loglevel = OPT_UINT32_VAL(LOGLEVEL);
222 version_handle_flag("afh", OPT_GIVEN(VERSION));
224 for (i = 0; i < lls_num_inputs(lpr); i++) {
226 const char *path = lls_input(i, lpr);
227 ret = mmap_full_file(path, O_RDONLY, &audio_file_data,
228 &audio_file_size, &fd);
230 PARA_ERROR_LOG("failed to mmap \"%s\"\n", path);
233 ret = compute_afhi(path, audio_file_data, audio_file_size,
236 audio_format_num = ret;
237 if (OPT_GIVEN(MODIFY)) {
238 ret = rewrite_tags(path, fd, audio_file_data,
239 audio_file_size, audio_format_num, &afhi);
241 printf("File %d: %s\n", i + 1, path);
242 print_info(audio_format_num, &afhi);
243 if (OPT_GIVEN(CHUNK_TABLE))
244 print_chunk_table(&afhi, audio_format_num,
245 audio_file_data, audio_file_size);
250 ret2 = para_munmap(audio_file_data, audio_file_size);
251 if (ret2 < 0 && ret >= 0)
258 PARA_ERROR_LOG("%s\n", errctx);
260 PARA_EMERG_LOG("%s\n", para_strerror(-ret));
261 lls_free_parse_result(lpr, CMD_PTR);
262 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;