/*
- * Copyright (C) 1997-2008 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2009 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
}
}
-
/**
* Guess the audio format judging from filename.
*
* \param name The filename.
*
- * \return This function returns -1 if it has no idea what kind of audio
- * file this might be. Otherwise the (non-negative) number of the audio format
- * is returned.
+ * \return This function returns \p -E_AUDIO_FORMAT if it has no idea what kind
+ * of audio file this might be. Otherwise the (non-negative) number of the
+ * audio format is returned.
*/
int guess_audio_format(const char *name)
{
return i;
}
}
- return -1;
+ return -E_AUDIO_FORMAT;
}
+/**
+ * Pretty-print the given meta-info.
+ *
+ * \param title The title of the audio file.
+ * \param artist The artist.
+ * \param album The name of the album.
+ * \param year Year of release.
+ * \param comment Further comments.
+ *
+ * This function is called by each audio format handler to produce the tag info
+ * status items. Usually, the audio format handlers read this info from the
+ * audio file (id3 tags, vorbis comments, ...).
+ *
+ * It is OK to pass \p NULL pointers for any argument in which case a suitable
+ * string is inserted which indicates that this information is not available.
+ *
+ * \return The status item string. It must be freed by the caller.
+ */
char *make_taginfo(char *title, char *artist, char *album, char *year,
char *comment)
{
return make_message("%s: %s, by %s\n" /* taginfo1 */
- "%s: A: %s, Y: %s, C: %s\n", /* taginfo 2*/
+ "%s: A: %s, Y: %s, C: %s\n", /* taginfo2 */
status_item_list[SI_TAGINFO1],
(title && *title)? title : "(title tag not set)",
(artist && *artist)? artist : "(artist tag not set)",
*/
const char *audio_format_name(int i)
{
- //PARA_NOTICE_LOG("array size: %u¸ requested: %d\n", ARRAY_SIZE(afl), i);
- assert(i < 0 || i < ARRAY_SIZE(afl) - 1);
- return i >= 0? afl[i].name : "(none)";
+ if (i < 0 || i >= ARRAY_SIZE(afl) - 1)
+ return "???";
+ return afl[i].name;
}
-
+/**
+ * Get one chunk of audio data.
+ *
+ * \param chunk_num The number of the chunk to get.
+ * \param afhi Describes the audio file.
+ * \param map The memory mapped audio file.
+ * \param buf Result pointer.
+ * \param len The length of the chunk in bytes.
+ *
+ * Upon return, \a buf will point so memory inside \a map. The returned buffer
+ * must therefore not be freed by the caller.
+ */
void afh_get_chunk(long unsigned chunk_num, struct afh_info *afhi,
void *map, const char **buf, size_t *len)
{
*len = afhi->chunk_table[chunk_num + 1] - pos;
}
+uint32_t afh_get_largest_chunk_size(struct afh_info *afhi)
+{
+ uint32_t n, largest = 0, *ct = afhi->chunk_table;
+
+ for (n = 1; n <= afhi->chunks_total; n++)
+ largest = PARA_MAX(largest, ct[n] - ct[n - 1]);
+ return largest;
+}
+
/**
* Get the header of an audio file.
*
*/
void afh_get_header(struct afh_info *afhi, void *map, const char **buf, size_t *len)
{
- if (!map || !afhi || ! afhi->header_len) {
+ if (!map || !afhi || !afhi->header_len) {
*buf = NULL;
*len = 0;
+ return;
}
*len = afhi->header_len;
*buf = map + afhi->header_offset;