Documentation updates for 0.4.
[paraslash.git] / afh.c
diff --git a/afh.c b/afh.c
index 84a061b..894cd78 100644 (file)
--- a/afh.c
+++ b/afh.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2008-2009 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -7,6 +7,7 @@
 /** \file afh.c Paraslash's standalone audio format handler tool. */
 
 #include <dirent.h>
+#include <sys/time.h>
 
 #include "para.h"
 #include "string.h"
@@ -20,54 +21,176 @@ static struct afh_args_info conf;
 const char *status_item_list[] = {STATUS_ITEM_ARRAY};
 
 INIT_AFH_ERRLISTS;
-INIT_STDERR_LOGGING(conf.loglevel_arg)
 
+static int loglevel;
+INIT_STDERR_LOGGING(loglevel)
+
+static void print_info(int audio_format_num, struct afh_info *afhi)
+{
+       printf("%s: %dkbit/s\n" /* bitrate */
+               "%s: %s\n" /* format */
+               "%s: %dHz\n" /* frequency */
+               "%s: %d\n" /* channels */
+               "%s: %lu\n" /* seconds total */
+               "%s: %lu: %lu\n" /* chunk time */
+               "%s: %lu\n" /* num chunks */
+               "%s: %s\n" /* techinfo */
+               "%s: %s\n" /* artist */
+               "%s: %s\n" /* title */
+               "%s: %s\n" /* year */
+               "%s: %s\n" /* album */
+               "%s: %s\n", /* comment */
+               status_item_list[SI_BITRATE], afhi->bitrate,
+               status_item_list[SI_FORMAT], audio_format_name(audio_format_num),
+               status_item_list[SI_FREQUENCY], afhi->frequency,
+               status_item_list[SI_CHANNELS], afhi->channels,
+               status_item_list[SI_SECONDS_TOTAL], afhi->seconds_total,
+               status_item_list[SI_CHUNK_TIME], (long unsigned)afhi->chunk_tv.tv_sec,
+                       (long unsigned)afhi->chunk_tv.tv_usec,
+               status_item_list[SI_NUM_CHUNKS], afhi->chunks_total,
+               status_item_list[SI_TECHINFO], afhi->techinfo? afhi->techinfo : "",
+               status_item_list[SI_ARTIST], afhi->tags.artist? afhi->tags.artist : "",
+               status_item_list[SI_TITLE], afhi->tags.title? afhi->tags.title : "",
+               status_item_list[SI_YEAR], afhi->tags.year? afhi->tags.year : "",
+               status_item_list[SI_ALBUM], afhi->tags.album? afhi->tags.album : "",
+               status_item_list[SI_COMMENT], afhi->tags.comment? afhi->tags.comment : ""
+       );
+}
+
+static void print_chunk_table(struct afh_info *afhi)
+{
+       int i;
+
+       printf("chunk_table: ");
+       for (i = 0; i <= afhi->chunks_total; i++)
+               printf("%u ", afhi->chunk_table[i]);
+       printf("\n");
+}
+
+static int cat_file(void *audio_file_data, struct afh_info *afhi)
+{
+       int ret;
+       struct timeval stream_start;
+       long unsigned i, first_chunk, last_chunk;
+       const char *buf;
+       size_t size;
+
+
+       if (conf.begin_chunk_arg < 0) {
+               if (-conf.begin_chunk_arg > afhi->chunks_total)
+                       return -ERRNO_TO_PARA_ERROR(EINVAL);
+               first_chunk = afhi->chunks_total + conf.begin_chunk_arg;
+       } else
+               first_chunk = conf.begin_chunk_arg;
+       if (conf.end_chunk_given) {
+               if (conf.end_chunk_arg < 0) {
+                       if (-conf.end_chunk_arg > afhi->chunks_total)
+                               return -ERRNO_TO_PARA_ERROR(EINVAL);
+                       last_chunk = afhi->chunks_total + conf.end_chunk_arg;
+               } else {
+                       if (conf.end_chunk_arg >= afhi->chunks_total)
+                               return -ERRNO_TO_PARA_ERROR(EINVAL);
+                       last_chunk = conf.end_chunk_arg;
+               }
+       } else
+               last_chunk = afhi->chunks_total - 1;
+       if (first_chunk >= last_chunk)
+               return -ERRNO_TO_PARA_ERROR(EINVAL);
+       if (!afhi->chunks_total)
+               return 1;
+       afh_get_header(afhi, audio_file_data, &buf, &size);
+       if (size && first_chunk && !conf.no_header_given) {
+               PARA_INFO_LOG("writing audio file header (%zu bytes)\n", size);
+               ret = write(STDOUT_FILENO, buf, size);
+               if (ret < 0)
+                       return ret;
+               if (ret != size)
+                       return -E_AFH_SHORT_WRITE;
+       }
+       PARA_NOTICE_LOG("writing chunks %lu - %lu\n", first_chunk, last_chunk);
+       gettimeofday(&stream_start, NULL);
+       for (i = first_chunk; i <= last_chunk; i++) {
+               struct timeval now, diff, next_chunk;
+               afh_get_chunk(i, afhi, audio_file_data, &buf, &size);
+               PARA_DEBUG_LOG("chunk %lu: size %zu\n", i, size);
+               if (conf.just_in_time_given) {
+                       compute_chunk_time(i - first_chunk, &afhi->chunk_tv,
+                               &stream_start, &next_chunk);
+                       gettimeofday(&now, NULL);
+                       ret = tv_diff(&next_chunk, &now, &diff);
+                       if (ret > 0) {
+                               ret = para_select(1, NULL, NULL, &diff);
+                               if (ret < 0)
+                                       return ret;
+                       }
+               }
+               if (!size)
+                       continue;
+               PARA_INFO_LOG("writing chunk %lu\n", i);
+               ret = write_all(STDOUT_FILENO, buf, &size);
+               if (ret < 0)
+                       return ret;
+       }
+       return 1;
+}
+
+/**
+ * The main function of para_afh.
+ *
+ * \param argc Usual argument count.
+ * \param argv Usual argument vector.
+ *
+ * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
+ */
 int main(int argc, char **argv)
 {
-       int i, ret;
+       int i, ret, audio_format_num, fd;
        void *audio_file_data;
        size_t audio_file_size;
        struct afh_info afhi;
 
        afh_cmdline_parser(argc, argv, &conf);
        HANDLE_VERSION_FLAG("afh", conf);
+       loglevel = get_loglevel_by_name(conf.loglevel_arg);
        ret = -E_AFH_SYNTAX;
-       if (conf.inputs_num != 1)
-               goto out;
-       afh_init();
-       ret = mmap_full_file(conf.inputs[0], O_RDONLY, &audio_file_data,
-               &audio_file_size, NULL);
-       if (ret < 0)
-               goto out;
-       ret = compute_afhi(conf.inputs[0], audio_file_data, audio_file_size, &afhi);
-       if (ret < 0)
+       if (conf.inputs_num == 0)
                goto out;
-       printf("%s: %dkbit/s\n" /* bitrate */
-               "%s: %s\n" /* format */
-               "%s: %dHz\n" /* frequency */
-               "%s: %d\n" /* channels */
-               "%s: %lu\n" /* seconds total */
-               "%s" /* tag info */
-               "%s: %lu: %lu\n" /* chunk time */
-               "%s: %lu\n", /* num chunks */
-               status_item_list[SI_BITRATE], afhi.bitrate,
-               status_item_list[SI_FORMAT], audio_format_name(ret),
-               status_item_list[SI_FREQUENCY], afhi.frequency,
-               status_item_list[SI_CHANNELS], afhi.channels,
-               status_item_list[SI_SECONDS_TOTAL], afhi.seconds_total,
-               afhi.info_string,
-               status_item_list[SI_CHUNK_TIME], (long unsigned)afhi.chunk_tv.tv_sec,
-                       (long unsigned)afhi.chunk_tv.tv_usec,
-               status_item_list[SI_NUM_CHUNKS], afhi.chunks_total
-       );
-       ret = 1;
-       if (!conf.chunk_table_given)
+       if (conf.stream_given && conf.inputs_num != 1)
                goto out;
-       printf("chunk_table: ");
-       for (i = 0; i <= afhi.chunks_total; i++)
-               printf("%u ", afhi.chunk_table[i]);
-       printf("\n");
-       ret = 1;
+       afh_init();
+       for (i = 0; i < conf.inputs_num; i++) {
+               int ret2;
+               ret = mmap_full_file(conf.inputs[i], O_RDONLY, &audio_file_data,
+                       &audio_file_size, &fd);
+               if (ret < 0)
+                       goto out;
+               ret = compute_afhi(conf.inputs[i], audio_file_data, audio_file_size,
+                       fd, &afhi);
+               if (ret < 0)
+                       goto out;
+               audio_format_num = ret;
+               if (conf.stream_given)
+                       ret = cat_file(audio_file_data, &afhi);
+               else {
+                       printf("File %d: %s\n", i + 1, conf.inputs[i]);
+                       print_info(audio_format_num, &afhi);
+                       if (conf.chunk_table_given)
+                               print_chunk_table(&afhi);
+                       free(afhi.techinfo);
+                       free(afhi.tags.artist);
+                       free(afhi.tags.title);
+                       free(afhi.tags.year);
+                       free(afhi.tags.album);
+                       free(afhi.tags.comment);
+                       free(afhi.chunk_table);
+                       printf("\n");
+               }
+               ret2 = para_munmap(audio_file_data, audio_file_size);
+               if (ret2 < 0 && ret >= 0)
+                       ret = ret2;
+               if (ret < 0)
+                       break;
+       }
 out:
        if (ret < 0)
                PARA_ERROR_LOG("%s\n", para_strerror(-ret));