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 <dirent.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
  19 static struct afh_args_info conf;
  20 /** The list of all status items */
  21 const char *status_item_list[] = {STATUS_ITEM_ARRAY};
  22
  23 INIT_AFH_ERRLISTS;
  24
  25 static int loglevel;
  26 INIT_STDERR_LOGGING(loglevel)
  27
  28 static void print_info(int audio_format_num, struct afh_info *afhi)
  29 {
  30         printf("%s: %dkbit/s\n" /* bitrate */
  31                 "%s: %s\n" /* format */
  32                 "%s: %dHz\n" /* frequency */
  33                 "%s: %d\n" /* channels */
  34                 "%s: %lu\n" /* seconds total */
  35                 "%s" /* tag info */
  36                 "%s: %lu: %lu\n" /* chunk time */
  37                 "%s: %lu\n", /* num chunks */
  38                 status_item_list[SI_BITRATE], afhi->bitrate,
  39                 status_item_list[SI_FORMAT], audio_format_name(audio_format_num),
  40                 status_item_list[SI_FREQUENCY], afhi->frequency,
  41                 status_item_list[SI_CHANNELS], afhi->channels,
  42                 status_item_list[SI_SECONDS_TOTAL], afhi->seconds_total,
  43                 afhi->info_string,
  44                 status_item_list[SI_CHUNK_TIME], (long unsigned)afhi->chunk_tv.tv_sec,
  45                         (long unsigned)afhi->chunk_tv.tv_usec,
  46                 status_item_list[SI_NUM_CHUNKS], afhi->chunks_total
  47         );
  48 }
  49
  50 static void print_chunk_table(struct afh_info *afhi)
  51 {
  52         int i;
  53
  54         printf("chunk_table: ");
  55         for (i = 0; i <= afhi->chunks_total; i++)
  56                 printf("%u ", afhi->chunk_table[i]);
  57         printf("\n");
  58 }
  59
  60 static int cat_file(void *audio_file_data, struct afh_info *afhi)
  61 {
  62         int ret;
  63         struct timeval stream_start;
  64         long unsigned i, first_chunk, last_chunk;
  65         const char *buf;
  66         size_t size;
  67
  68
  69         if (conf.begin_chunk_arg < 0) {
  70                 if (-conf.begin_chunk_arg > afhi->chunks_total)
  71                         return -ERRNO_TO_PARA_ERROR(EINVAL);
  72                 first_chunk = afhi->chunks_total + conf.begin_chunk_arg;
  73         } else
  74                 first_chunk = conf.begin_chunk_arg;
  75         if (conf.end_chunk_given) {
  76                 if (conf.end_chunk_arg < 0) {
  77                         if (-conf.end_chunk_arg > afhi->chunks_total)
  78                                 return -ERRNO_TO_PARA_ERROR(EINVAL);
  79                         last_chunk = afhi->chunks_total + conf.end_chunk_arg;
  80                 } else {
  81                         if (conf.end_chunk_arg >= afhi->chunks_total)
  82                                 return -ERRNO_TO_PARA_ERROR(EINVAL);
  83                         last_chunk = conf.end_chunk_arg;
  84                 }
  85         } else
  86                 last_chunk = afhi->chunks_total - 1;
  87         if (first_chunk >= last_chunk)
  88                 return -ERRNO_TO_PARA_ERROR(EINVAL);
  89         if (!afhi->chunks_total)
  90                 return 1;
  91         afh_get_header(afhi, audio_file_data, &buf, &size);
  92         if (size && first_chunk && !conf.no_header_given) {
  93                 PARA_INFO_LOG("writing audio file header (%zu bytes)\n", size);
  94                 ret = write(STDOUT_FILENO, buf, size);
  95                 if (ret < 0)
  96                         return ret;
  97                 if (ret != size)
  98                         return -E_AFH_SHORT_WRITE;
  99         }
 100         PARA_NOTICE_LOG("writing chunks %lu - %lu\n", first_chunk, last_chunk);
 101         gettimeofday(&stream_start, NULL);
 102         for (i = first_chunk; i <= last_chunk; i++) {
 103                 struct timeval now, diff, next_chunk;
 104                 afh_get_chunk(i, afhi, audio_file_data, &buf, &size);
 105                 PARA_DEBUG_LOG("chunk %lu: size %zu\n", i, size);
 106                 if (conf.just_in_time_given) {
 107                         compute_chunk_time(i - first_chunk, &afhi->chunk_tv,
 108                                 &stream_start, &next_chunk);
 109                         gettimeofday(&now, NULL);
 110                         ret = tv_diff(&next_chunk, &now, &diff);
 111                         if (ret > 0) {
 112                                 ret = para_select(1, NULL, NULL, &diff);
 113                                 if (ret < 0)
 114                                         return ret;
 115                         }
 116                 }
 117                 if (!size)
 118                         continue;
 119                 PARA_INFO_LOG("writing chunk %lu\n", i);
 120                 ret = write_all(STDOUT_FILENO, buf, &size);
 121                 if (ret < 0)
 122                         return ret;
 123         }
 124         return 1;
 125 }
 126
 127 /**
 128  * The main function of para_afh.
 129  *
 130  * \param argc Usual argument count.
 131  * \param argv Usual argument vector.
 132  *
 133  * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
 134  */
 135 int main(int argc, char **argv)
 136 {
 137         int i, ret, audio_format_num, fd;
 138         void *audio_file_data;
 139         size_t audio_file_size;
 140         struct afh_info afhi;
 141
 142         afh_cmdline_parser(argc, argv, &conf);
 143         HANDLE_VERSION_FLAG("afh", conf);
 144         loglevel = get_loglevel_by_name(conf.loglevel_arg);
 145         ret = -E_AFH_SYNTAX;
 146         if (conf.inputs_num == 0)
 147                 goto out;
 148         if (conf.stream_given && conf.inputs_num != 1)
 149                 goto out;
 150         afh_init();
 151         for (i = 0; i < conf.inputs_num; i++) {
 152                 int ret2;
 153                 ret = mmap_full_file(conf.inputs[i], O_RDONLY, &audio_file_data,
 154                         &audio_file_size, &fd);
 155                 if (ret < 0)
 156                         goto out;
 157                 ret = compute_afhi(conf.inputs[i], audio_file_data, audio_file_size,
 158                         fd, &afhi);
 159                 if (ret < 0)
 160                         goto out;
 161                 audio_format_num = ret;
 162                 if (conf.stream_given)
 163                         ret = cat_file(audio_file_data, &afhi);
 164                 else {
 165                         printf("File %d: %s\n", i + 1, conf.inputs[i]);
 166                         print_info(audio_format_num, &afhi);
 167                         if (conf.chunk_table_given)
 168                                 print_chunk_table(&afhi);
 169                         printf("\n");
 170                 }
 171                 ret2 = para_munmap(audio_file_data, audio_file_size);
 172                 if (ret2 < 0 && ret >= 0)
 173                         ret = ret2;
 174                 if (ret < 0)
 175                         break;
 176         }
 177 out:
 178         if (ret < 0)
 179                 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
 180         return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
 181 }