5b1cfe9bd1bd367939b9df2ddce2e4069c6df70d
[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 INIT_AFH_ERRLISTS;
22
23 static int loglevel;
24 INIT_STDERR_LOGGING(loglevel)
25
26 static void print_info(int audio_format_num, struct afh_info *afhi)
27 {
28 printf("%s: %dkbit/s\n" /* bitrate */
29 "%s: %s\n" /* format */
30 "%s: %dHz\n" /* frequency */
31 "%s: %d\n" /* channels */
32 "%s: %lu\n" /* seconds total */
33 "%s: %lu: %lu\n" /* chunk time */
34 "%s: %lu\n" /* num chunks */
35 "%s: %s\n" /* techinfo */
36 "%s: %s\n" /* artist */
37 "%s: %s\n" /* title */
38 "%s: %s\n" /* year */
39 "%s: %s\n" /* album */
40 "%s: %s\n", /* comment */
41 status_item_list[SI_BITRATE], afhi->bitrate,
42 status_item_list[SI_FORMAT], audio_format_name(audio_format_num),
43 status_item_list[SI_FREQUENCY], afhi->frequency,
44 status_item_list[SI_CHANNELS], afhi->channels,
45 status_item_list[SI_SECONDS_TOTAL], afhi->seconds_total,
46 status_item_list[SI_CHUNK_TIME], (long unsigned)afhi->chunk_tv.tv_sec,
47 (long unsigned)afhi->chunk_tv.tv_usec,
48 status_item_list[SI_NUM_CHUNKS], afhi->chunks_total,
49 status_item_list[SI_TECHINFO], afhi->techinfo? afhi->techinfo : "",
50 status_item_list[SI_ARTIST], afhi->tags.artist? afhi->tags.artist : "",
51 status_item_list[SI_TITLE], afhi->tags.title? afhi->tags.title : "",
52 status_item_list[SI_YEAR], afhi->tags.year? afhi->tags.year : "",
53 status_item_list[SI_ALBUM], afhi->tags.album? afhi->tags.album : "",
54 status_item_list[SI_COMMENT], afhi->tags.comment? afhi->tags.comment : ""
55 );
56 }
57
58 static void print_chunk_table(struct afh_info *afhi)
59 {
60 int i;
61
62 if (!conf.human_given) {
63 printf("chunk_table: ");
64 for (i = 0; i <= afhi->chunks_total; i++)
65 printf("%u ", afhi->chunk_table[i]);
66 printf("\n");
67 return;
68 }
69 for (i = 1; i <= afhi->chunks_total; i++) {
70 struct timeval tv;
71 long unsigned from, to;
72 tv_scale(i - 1, &afhi->chunk_tv, &tv);
73 from = tv2ms(&tv);
74 tv_scale(i, &afhi->chunk_tv, &tv);
75 to = tv2ms(&tv);
76 printf("%d [%lu.%03lu - %lu.%03lu] %u - %u (%u)\n", i - 1,
77 from / 1000, from % 1000, to / 1000, to % 1000,
78 afhi->chunk_table[i - 1], afhi->chunk_table[i],
79 afhi->chunk_table[i] - afhi->chunk_table[i - 1]);
80 }
81 }
82
83 static int cat_file(struct afh_info *afhi, int audio_format_id,
84 void *audio_file_data, size_t audio_file_size)
85 {
86 int ret;
87 struct timeval stream_start;
88 long unsigned i, first_chunk, last_chunk;
89 const char *buf;
90 char *header;
91 size_t size;
92
93 if (conf.begin_chunk_arg < 0) {
94 if (-conf.begin_chunk_arg > afhi->chunks_total)
95 return -ERRNO_TO_PARA_ERROR(EINVAL);
96 first_chunk = afhi->chunks_total + conf.begin_chunk_arg;
97 } else
98 first_chunk = conf.begin_chunk_arg;
99 if (conf.end_chunk_given) {
100 if (conf.end_chunk_arg < 0) {
101 if (-conf.end_chunk_arg > afhi->chunks_total)
102 return -ERRNO_TO_PARA_ERROR(EINVAL);
103 last_chunk = afhi->chunks_total + conf.end_chunk_arg;
104 } else {
105 if (conf.end_chunk_arg >= afhi->chunks_total)
106 return -ERRNO_TO_PARA_ERROR(EINVAL);
107 last_chunk = conf.end_chunk_arg;
108 }
109 } else
110 last_chunk = afhi->chunks_total - 1;
111 if (first_chunk >= last_chunk)
112 return -ERRNO_TO_PARA_ERROR(EINVAL);
113 if (!afhi->chunks_total)
114 return 1;
115 /* eliminate the possibility of short writes */
116 ret = mark_fd_blocking(STDOUT_FILENO);
117 if (ret < 0)
118 return ret;
119 if (first_chunk > 0 && !conf.no_header_given) {
120 afh_get_header(afhi, audio_format_id, audio_file_data, audio_file_size,
121 &header, &size);
122 if (size > 0) {
123 PARA_INFO_LOG("writing header (%zu bytes)\n", size);
124 ret = write_all(STDOUT_FILENO, header, size);
125 afh_free_header(header, audio_format_id);
126 if (ret < 0)
127 return ret;
128 if (ret != size)
129 return -E_AFH_SHORT_WRITE;
130 }
131 }
132 PARA_NOTICE_LOG("writing chunks %lu - %lu\n", first_chunk, last_chunk);
133 gettimeofday(&stream_start, NULL);
134 for (i = first_chunk; i <= last_chunk; i++) {
135 struct timeval now, diff, next_chunk;
136 afh_get_chunk(i, afhi, audio_file_data, &buf, &size);
137 PARA_DEBUG_LOG("chunk %lu: size %zu\n", i, size);
138 if (conf.just_in_time_given) {
139 compute_chunk_time(i - first_chunk, &afhi->chunk_tv,
140 &stream_start, &next_chunk);
141 gettimeofday(&now, NULL);
142 ret = tv_diff(&next_chunk, &now, &diff);
143 if (ret > 0) {
144 ret = para_select(1, NULL, NULL, &diff);
145 if (ret < 0)
146 return ret;
147 }
148 }
149 if (!size)
150 continue;
151 PARA_INFO_LOG("writing chunk %lu\n", i);
152 ret = write_all(STDOUT_FILENO, buf, size);
153 if (ret < 0)
154 return ret;
155 }
156 return 1;
157 }
158
159 /**
160 * The main function of para_afh.
161 *
162 * \param argc Usual argument count.
163 * \param argv Usual argument vector.
164 *
165 * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
166 */
167 int main(int argc, char **argv)
168 {
169 int i, ret, audio_format_num, fd;
170 void *audio_file_data;
171 size_t audio_file_size;
172 struct afh_info afhi;
173
174 afh_cmdline_parser(argc, argv, &conf);
175 HANDLE_VERSION_FLAG("afh", conf);
176 loglevel = get_loglevel_by_name(conf.loglevel_arg);
177 ret = -E_AFH_SYNTAX;
178 if (conf.inputs_num == 0)
179 goto out;
180 if (conf.stream_given && conf.inputs_num != 1)
181 goto out;
182 afh_init();
183 for (i = 0; i < conf.inputs_num; i++) {
184 int ret2;
185 ret = mmap_full_file(conf.inputs[i], O_RDONLY, &audio_file_data,
186 &audio_file_size, &fd);
187 if (ret < 0) {
188 PARA_ERROR_LOG("failed to mmap \"%s\"\n", conf.inputs[i]);
189 goto out;
190 }
191 ret = compute_afhi(conf.inputs[i], audio_file_data, audio_file_size,
192 fd, &afhi);
193 if (ret < 0)
194 goto out;
195
196 audio_format_num = ret;
197 if (conf.stream_given)
198 ret = cat_file(&afhi, audio_format_num,
199 audio_file_data, audio_file_size);
200 else {
201 printf("File %d: %s\n", i + 1, conf.inputs[i]);
202 print_info(audio_format_num, &afhi);
203 if (conf.chunk_table_given)
204 print_chunk_table(&afhi);
205 printf("\n");
206 }
207 clear_afhi(&afhi);
208 ret2 = para_munmap(audio_file_data, audio_file_size);
209 if (ret2 < 0 && ret >= 0)
210 ret = ret2;
211 if (ret < 0)
212 break;
213 }
214 out:
215 if (ret < 0)
216 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
217 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
218 }