afh.c

   1 /*
   2  * Copyright (C) 2008-2009 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 <dirent.h>
  11 #include <sys/time.h>
  12
  13 #include "para.h"
  14 #include "string.h"
  15 #include "afh.cmdline.h"
  16 #include "fd.h"
  17 #include "afh.h"
  18 #include "error.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         printf("chunk_table: ");
  66         for (i = 0; i <= afhi->chunks_total; i++)
  67                 printf("%u ", afhi->chunk_table[i]);
  68         printf("\n");
  69 }
  70
  71 static int cat_file(void *audio_file_data, struct afh_info *afhi)
  72 {
  73         int ret;
  74         struct timeval stream_start;
  75         long unsigned i, first_chunk, last_chunk;
  76         const char *buf;
  77         size_t size;
  78
  79
  80         if (conf.begin_chunk_arg < 0) {
  81                 if (-conf.begin_chunk_arg > afhi->chunks_total)
  82                         return -ERRNO_TO_PARA_ERROR(EINVAL);
  83                 first_chunk = afhi->chunks_total + conf.begin_chunk_arg;
  84         } else
  85                 first_chunk = conf.begin_chunk_arg;
  86         if (conf.end_chunk_given) {
  87                 if (conf.end_chunk_arg < 0) {
  88                         if (-conf.end_chunk_arg > afhi->chunks_total)
  89                                 return -ERRNO_TO_PARA_ERROR(EINVAL);
  90                         last_chunk = afhi->chunks_total + conf.end_chunk_arg;
  91                 } else {
  92                         if (conf.end_chunk_arg >= afhi->chunks_total)
  93                                 return -ERRNO_TO_PARA_ERROR(EINVAL);
  94                         last_chunk = conf.end_chunk_arg;
  95                 }
  96         } else
  97                 last_chunk = afhi->chunks_total - 1;
  98         if (first_chunk >= last_chunk)
  99                 return -ERRNO_TO_PARA_ERROR(EINVAL);
 100         if (!afhi->chunks_total)
 101                 return 1;
 102         afh_get_header(afhi, audio_file_data, &buf, &size);
 103         if (size && first_chunk && !conf.no_header_given) {
 104                 PARA_INFO_LOG("writing audio file header (%zu bytes)\n", size);
 105                 ret = write(STDOUT_FILENO, buf, size);
 106                 if (ret < 0)
 107                         return ret;
 108                 if (ret != size)
 109                         return -E_AFH_SHORT_WRITE;
 110         }
 111         PARA_NOTICE_LOG("writing chunks %lu - %lu\n", first_chunk, last_chunk);
 112         gettimeofday(&stream_start, NULL);
 113         for (i = first_chunk; i <= last_chunk; i++) {
 114                 struct timeval now, diff, next_chunk;
 115                 afh_get_chunk(i, afhi, audio_file_data, &buf, &size);
 116                 PARA_DEBUG_LOG("chunk %lu: size %zu\n", i, size);
 117                 if (conf.just_in_time_given) {
 118                         compute_chunk_time(i - first_chunk, &afhi->chunk_tv,
 119                                 &stream_start, &next_chunk);
 120                         gettimeofday(&now, NULL);
 121                         ret = tv_diff(&next_chunk, &now, &diff);
 122                         if (ret > 0) {
 123                                 ret = para_select(1, NULL, NULL, &diff);
 124                                 if (ret < 0)
 125                                         return ret;
 126                         }
 127                 }
 128                 if (!size)
 129                         continue;
 130                 PARA_INFO_LOG("writing chunk %lu\n", i);
 131                 ret = write_all(STDOUT_FILENO, buf, &size);
 132                 if (ret < 0)
 133                         return ret;
 134         }
 135         return 1;
 136 }
 137
 138 /**
 139  * The main function of para_afh.
 140  *
 141  * \param argc Usual argument count.
 142  * \param argv Usual argument vector.
 143  *
 144  * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
 145  */
 146 int main(int argc, char **argv)
 147 {
 148         int i, ret, audio_format_num, fd;
 149         void *audio_file_data;
 150         size_t audio_file_size;
 151         struct afh_info afhi;
 152
 153         afh_cmdline_parser(argc, argv, &conf);
 154         HANDLE_VERSION_FLAG("afh", conf);
 155         loglevel = get_loglevel_by_name(conf.loglevel_arg);
 156         ret = -E_AFH_SYNTAX;
 157         if (conf.inputs_num == 0)
 158                 goto out;
 159         if (conf.stream_given && conf.inputs_num != 1)
 160                 goto out;
 161         afh_init();
 162         for (i = 0; i < conf.inputs_num; i++) {
 163                 int ret2;
 164                 ret = mmap_full_file(conf.inputs[i], O_RDONLY, &audio_file_data,
 165                         &audio_file_size, &fd);
 166                 if (ret < 0)
 167                         goto out;
 168                 ret = compute_afhi(conf.inputs[i], audio_file_data, audio_file_size,
 169                         fd, &afhi);
 170                 if (ret < 0)
 171                         goto out;
 172                 audio_format_num = ret;
 173                 if (conf.stream_given)
 174                         ret = cat_file(audio_file_data, &afhi);
 175                 else {
 176                         printf("File %d: %s\n", i + 1, conf.inputs[i]);
 177                         print_info(audio_format_num, &afhi);
 178                         if (conf.chunk_table_given)
 179                                 print_chunk_table(&afhi);
 180                         free(afhi.techinfo);
 181                         free(afhi.tags.artist);
 182                         free(afhi.tags.title);
 183                         free(afhi.tags.year);
 184                         free(afhi.tags.album);
 185                         free(afhi.tags.comment);
 186                         free(afhi.chunk_table);
 187                         printf("\n");
 188                 }
 189                 ret2 = para_munmap(audio_file_data, audio_file_size);
 190                 if (ret2 < 0 && ret >= 0)
 191                         ret = ret2;
 192                 if (ret < 0)
 193                         break;
 194         }
 195 out:
 196         if (ret < 0)
 197                 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
 198         return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
 199 }