afh.c

   1 /*
   2  * Copyright (C) 2008-2011 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(STDOUT_FILENO, header, size); /* FIXME */
 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 }