X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=afh_common.c;h=8c0eed2731837da4e8d3847d1d3d6caeddfe5102;hp=47104500e23417850ef2d164e1c98a68eac74632;hb=a284d2903ef9a14f944eae3c14088a42701ca2cf;hpb=6c5220a23d66668e88929b2ba0f66758ab90a7be

diff --git a/afh_common.c b/afh_common.c
index 47104500..8c0eed27 100644
--- a/afh_common.c
+++ b/afh_common.c
@@ -1,5 +1,5 @@
 /*
- * 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.
  */
@@ -91,7 +91,6 @@ void afh_init(void)
 	}
 }
 
-
 /**
  * Guess the audio format judging from filename.
  *
@@ -122,11 +121,29 @@ int guess_audio_format(const char *name)
 	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)",
@@ -196,7 +213,18 @@ const char *audio_format_name(int i)
 	return i >= 0?  afl[i].name : "(none)";
 }
 
-
+/**
+ * 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)
 {
@@ -205,6 +233,15 @@ void afh_get_chunk(long unsigned chunk_num, struct afh_info *afhi,
 	*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.
  *
@@ -219,9 +256,10 @@ void afh_get_chunk(long unsigned chunk_num, struct afh_info *afhi,
  */
 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;