afh: Unify name of init functions.

[paraslash.git] / ogg_afh.c

diff --git a/ogg_afh.c b/ogg_afh.c
index 8376b652d15eb690e91e86163045af334ef7cf07..cb0611e01440a2a1e23e4c586a602c16cb7bbc16 100644 (file)
--- a/ogg_afh.c
+++ b/ogg_afh.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004-2012 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2004 Andre Noll <maan@tuebingen.mpg.de>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -20,6 +20,20 @@ struct private_vorbis_data {
        vorbis_comment vc;
 };
 
+/*
+ * Vorbis uses three header packets, all of which are required: the
+ * identification header, the comments header, and the setup header.
+ *
+ * The identification header identifies the bitstream as Vorbis. It contains
+ * the Vorbis version and simple audio characteristics of the stream such as
+ * sample rate and number of channels.
+ *
+ * The comment header includes user text comments (tags) and a vendor string
+ * for the application/library that produced the bitstream.
+ *
+ * The setup header includes extensive CODEC setup information as well as the
+ * complete VQ and Huffman codebooks needed for decoding.
+ */
 static int vorbis_packet_callback(ogg_packet *packet, int packet_num,
                __a_unused int serial, struct afh_info *afhi, void *private_data)
 {
@@ -81,7 +95,7 @@ static void add_ogg_page(ogg_page *og, struct vorbis_get_header_data *vghd)
        memcpy(p + og->header_len, og->body, og->body_len);
        vghd->buf = buf;
        vghd->len = new_len;
-       PARA_DEBUG_LOG("header/body/old/new: %lu/%lu/%zu/%zu\n",
+       PARA_DEBUG_LOG("header/body/old/new: %li/%li/%zu/%zu\n",
                og->header_len, og->body_len, old_len, new_len);
 }
 
@@ -157,16 +171,51 @@ fail:
        PARA_ERROR_LOG("%s\n", para_strerror(-ret));
 }
 
-static const char* ogg_suffixes[] = {"ogg", NULL};
+static int vorbis_make_meta_packet(struct taginfo *tags, ogg_packet *result)
+{
+       vorbis_comment vc;
+       int ret;
+
+       vorbis_comment_init(&vc);
+       vorbis_comment_add_tag(&vc, "artist", tags->artist);
+       vorbis_comment_add_tag(&vc, "title", tags->title);
+       vorbis_comment_add_tag(&vc, "album", tags->album);
+       vorbis_comment_add_tag(&vc, "year", tags->year);
+       vorbis_comment_add_tag(&vc, "comment", tags->comment);
+       ret = vorbis_commentheader_out(&vc, result);
+       vorbis_comment_clear(&vc);
+       if (ret != 0)
+               return -E_VORBIS_COMMENTHEADER;
+       return 1;
+}
+
+static int vorbis_rewrite_tags(const char *map, size_t mapsize,
+               struct taginfo *tags, int output_fd,
+               __a_unused const char *filename)
+{
+       int ret;
+       ogg_packet packet;
+
+       ret = vorbis_make_meta_packet(tags, &packet);
+       if (ret < 0)
+               return ret;
+       ret = ogg_rewrite_tags(map, mapsize, output_fd, (char *)packet.packet,
+               packet.bytes);
+       free(packet.packet);
+       return ret;
+}
+
+static const char * const ogg_suffixes[] = {"ogg", NULL};
 
 /**
  * The init function of the ogg vorbis audio format handler.
  *
  * \param afh Pointer to the struct to initialize.
  */
-void ogg_init(struct audio_format_handler *afh)
+void ogg_afh_init(struct audio_format_handler *afh)
 {
        afh->get_file_info = ogg_vorbis_get_file_info;
        afh->get_header = vorbis_get_header;
        afh->suffixes = ogg_suffixes;
+       afh->rewrite_tags = vorbis_rewrite_tags;
 }