X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=ogg_afh.c;h=9dfb028d0a2f9e14dac54cbc5a4ca200cd2dcf6b;hp=46c7b084c0ba7b8aaf22683ba5897f94532f9db2;hb=837cd1ab890645d9fd7d0d85139fdf076d987ea4;hpb=d91b2b2a70c85562b5d30cc5fda46468532e314a diff --git a/ogg_afh.c b/ogg_afh.c index 46c7b084..9dfb028d 100644 --- a/ogg_afh.c +++ b/ogg_afh.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2004-2011 Andre Noll + * Copyright (C) 2004 Andre Noll * * 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) { @@ -105,7 +119,6 @@ static int vorbis_get_header_callback(ogg_packet *packet, int packet_num, return 0; if (packet_num == 0) { ogg_stream_init(&vghd->os, serial); - ret = -E_OGG_PACKET_IN; ret = ogg_stream_packetin(&vghd->os, packet); if (ret < 0) goto out;