b76c72fdab6dbe445b1466de76c4f3dd58e33b92
[paraslash.git] / afh.c
1 /*
2 * Copyright (C) 2008-2012 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file afh.c Paraslash's standalone audio format handler tool. */
8
9 #include <regex.h>
10 #include <sys/time.h>
11
12 #include "para.h"
13 #include "string.h"
14 #include "afh.cmdline.h"
15 #include "fd.h"
16 #include "afh.h"
17 #include "error.h"
18 #include "version.h"
19
20 static struct afh_args_info conf;
21 /** The list of all status items */
22 const char *status_item_list[] = {STATUS_ITEM_ARRAY};
23
24 INIT_AFH_ERRLISTS;
25
26 static int loglevel;
27 INIT_STDERR_LOGGING(loglevel)
28
29 static void print_info(int audio_format_num, struct afh_info *afhi)
30 {
31 printf("%s: %dkbit/s\n" /* bitrate */
32 "%s: %s\n" /* format */
33 "%s: %dHz\n" /* frequency */
34 "%s: %d\n" /* channels */
35 "%s: %lu\n" /* seconds total */
36 "%s: %lu: %lu\n" /* chunk time */
37 "%s: %lu\n" /* num chunks */
38 "%s: %s\n" /* techinfo */
39 "%s: %s\n" /* artist */
40 "%s: %s\n" /* title */
41 "%s: %s\n" /* year */
42 "%s: %s\n" /* album */
43 "%s: %s\n", /* comment */
44 status_item_list[SI_BITRATE], afhi->bitrate,
45 status_item_list[SI_FORMAT], audio_format_name(audio_format_num),
46 status_item_list[SI_FREQUENCY], afhi->frequency,
47 status_item_list[SI_CHANNELS], afhi->channels,
48 status_item_list[SI_SECONDS_TOTAL], afhi->seconds_total,
49 status_item_list[SI_CHUNK_TIME], (long unsigned)afhi->chunk_tv.tv_sec,
50 (long unsigned)afhi->chunk_tv.tv_usec,
51 status_item_list[SI_NUM_CHUNKS], afhi->chunks_total,
52 status_item_list[SI_TECHINFO], afhi->techinfo? afhi->techinfo : "",
53 status_item_list[SI_ARTIST], afhi->tags.artist? afhi->tags.artist : "",
54 status_item_list[SI_TITLE], afhi->tags.title? afhi->tags.title : "",
55 status_item_list[SI_YEAR], afhi->tags.year? afhi->tags.year : "",
56 status_item_list[SI_ALBUM], afhi->tags.album? afhi->tags.album : "",
57 status_item_list[SI_COMMENT], afhi->tags.comment? afhi->tags.comment : ""
58 );
59 }
60
61 static void print_chunk_table(struct afh_info *afhi)
62 {
63 int i;
64
65 if (!conf.human_given) {
66 printf("chunk_table: ");
67 for (i = 0; i <= afhi->chunks_total; i++)
68 printf("%u ", afhi->chunk_table[i]);
69 printf("\n");
70 return;
71 }
72 for (i = 1; i <= afhi->chunks_total; i++) {
73 struct timeval tv;
74 long unsigned from, to;
75 tv_scale(i - 1, &afhi->chunk_tv, &tv);
76 from = tv2ms(&tv);
77 tv_scale(i, &afhi->chunk_tv, &tv);
78 to = tv2ms(&tv);
79 printf("%d [%lu.%03lu - %lu.%03lu] %u - %u (%u)\n", i - 1,
80 from / 1000, from % 1000, to / 1000, to % 1000,
81 afhi->chunk_table[i - 1], afhi->chunk_table[i],
82 afhi->chunk_table[i] - afhi->chunk_table[i - 1]);
83 }
84 }
85
86 static int cat_file(struct afh_info *afhi, int audio_format_id,
87 void *audio_file_data, size_t audio_file_size)
88 {
89 int ret;
90 struct timeval stream_start;
91 long unsigned i, first_chunk, last_chunk;
92 const char *buf;
93 char *header;
94 size_t size;
95
96 if (conf.begin_chunk_arg < 0) {
97 if (-conf.begin_chunk_arg > afhi->chunks_total)
98 return -ERRNO_TO_PARA_ERROR(EINVAL);
99 first_chunk = afhi->chunks_total + conf.begin_chunk_arg;
100 } else
101 first_chunk = conf.begin_chunk_arg;
102 if (conf.end_chunk_given) {
103 if (conf.end_chunk_arg < 0) {
104 if (-conf.end_chunk_arg > afhi->chunks_total)
105 return -ERRNO_TO_PARA_ERROR(EINVAL);
106 last_chunk = afhi->chunks_total + conf.end_chunk_arg;
107 } else {
108 if (conf.end_chunk_arg >= afhi->chunks_total)
109 return -ERRNO_TO_PARA_ERROR(EINVAL);
110 last_chunk = conf.end_chunk_arg;
111 }
112 } else
113 last_chunk = afhi->chunks_total - 1;
114 if (first_chunk >= last_chunk)
115 return -ERRNO_TO_PARA_ERROR(EINVAL);
116 if (!afhi->chunks_total)
117 return 1;
118 /* eliminate the possibility of short writes */
119 ret = mark_fd_blocking(STDOUT_FILENO);
120 if (ret < 0)
121 return ret;
122 if (first_chunk > 0 && !conf.no_header_given) {
123 afh_get_header(afhi, audio_format_id, audio_file_data, audio_file_size,
124 &header, &size);
125 if (size > 0) {
126 PARA_INFO_LOG("writing header (%zu bytes)\n", size);
127 ret = write_all(STDOUT_FILENO, header, size);
128 afh_free_header(header, audio_format_id);
129 if (ret < 0)
130 return ret;
131 if (ret != size)
132 return -E_AFH_SHORT_WRITE;
133 }
134 }
135 PARA_NOTICE_LOG("writing chunks %lu - %lu\n", first_chunk, last_chunk);
136 gettimeofday(&stream_start, NULL);
137 for (i = first_chunk; i <= last_chunk; i++) {
138 struct timeval now, diff, next_chunk;
139 afh_get_chunk(i, afhi, audio_file_data, &buf, &size);
140 PARA_DEBUG_LOG("chunk %lu: size %zu\n", i, size);
141 if (conf.just_in_time_given) {
142 compute_chunk_time(i - first_chunk, &afhi->chunk_tv,
143 &stream_start, &next_chunk);
144 gettimeofday(&now, NULL);
145 ret = tv_diff(&next_chunk, &now, &diff);
146 if (ret > 0) {
147 ret = para_select(1, NULL, NULL, &diff);
148 if (ret < 0)
149 return ret;
150 }
151 }
152 if (!size)
153 continue;
154 PARA_INFO_LOG("writing chunk %lu\n", i);
155 ret = write_all(STDOUT_FILENO, buf, size);
156 if (ret < 0)
157 return ret;
158 }
159 return 1;
160 }
161
162 /**
163 * The main function of para_afh.
164 *
165 * \param argc Usual argument count.
166 * \param argv Usual argument vector.
167 *
168 * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
169 */
170 int main(int argc, char **argv)
171 {
172 int i, ret, audio_format_num, fd;
173 void *audio_file_data;
174 size_t audio_file_size;
175 struct afh_info afhi;
176
177 afh_cmdline_parser(argc, argv, &conf);
178 HANDLE_VERSION_FLAG("afh", conf);
179 loglevel = get_loglevel_by_name(conf.loglevel_arg);
180 ret = -E_AFH_SYNTAX;
181 if (conf.inputs_num == 0)
182 goto out;
183 if (conf.stream_given && conf.inputs_num != 1)
184 goto out;
185 afh_init();
186 for (i = 0; i < conf.inputs_num; i++) {
187 int ret2;
188 ret = mmap_full_file(conf.inputs[i], O_RDONLY, &audio_file_data,
189 &audio_file_size, &fd);
190 if (ret < 0)
191 goto out;
192 ret = compute_afhi(conf.inputs[i], audio_file_data, audio_file_size,
193 fd, &afhi);
194 if (ret < 0)
195 goto out;
196
197 audio_format_num = ret;
198 if (conf.stream_given)
199 ret = cat_file(&afhi, audio_format_num,
200 audio_file_data, audio_file_size);
201 else {
202 printf("File %d: %s\n", i + 1, conf.inputs[i]);
203 print_info(audio_format_num, &afhi);
204 if (conf.chunk_table_given)
205 print_chunk_table(&afhi);
206 printf("\n");
207 }
208 free(afhi.techinfo);
209 free(afhi.tags.artist);
210 free(afhi.tags.title);
211 free(afhi.tags.year);
212 free(afhi.tags.album);
213 free(afhi.tags.comment);
214 free(afhi.chunk_table);
215 ret2 = para_munmap(audio_file_data, audio_file_size);
216 if (ret2 < 0 && ret >= 0)
217 ret = ret2;
218 if (ret < 0)
219 break;
220 }
221 out:
222 if (ret < 0)
223 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
224 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
225 }