2 * Copyright (C) 2010 Andre Noll <maan@tuebingen.mpg.de>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /* This file is based on speexdec.c, by Jean-Marc Valin, see below. */
9 /* Copyright (C) 2002-2006 Jean-Marc Valin
12 Redistribution and use in source and binary forms, with or without
13 modification, are permitted provided that the following conditions
16 - Redistributions of source code must retain the above copyright
17 notice, this list of conditions and the following disclaimer.
19 - Redistributions in binary form must reproduce the above copyright
20 notice, this list of conditions and the following disclaimer in the
21 documentation and/or other materials provided with the distribution.
23 - Neither the name of the Xiph.org Foundation nor the names of its
24 contributors may be used to endorse or promote products derived from
25 this software without specific prior written permission.
27 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
30 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
31 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
32 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
33 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
34 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
35 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
36 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 /** \file spx_afh.c Audio format handler for ogg/speex files. */
43 #include <speex/speex.h>
44 #include <speex/speex_header.h>
45 #include <speex/speex_stereo.h>
50 #include "portable_io.h"
53 #include "ogg_afh_common.h"
55 struct private_spx_data {
56 struct spx_header_info shi;
59 static bool copy_if_tag_type(const char *tag, int taglen, const char *type,
62 char *q = key_value_copy(tag, taglen, type);
70 static int spx_get_comments(unsigned char *comments, int length,
73 char *c = (char *)comments;
74 uint32_t len, nb_fields;
79 return -E_SPX_COMMENT;
84 return -E_SPX_COMMENT;
85 tags->comment = safe_strdup(c, len);
89 return -E_SPX_COMMENT;
90 nb_fields = read_u32(c);
91 PARA_DEBUG_LOG("%d comment(s)\n", nb_fields);
93 for (i = 0; i < nb_fields; i++, c += len) {
97 return -E_SPX_COMMENT;
101 return -E_SPX_COMMENT;
102 if (copy_if_tag_type(c, len, "author", &tags->artist))
104 if (copy_if_tag_type(c, len, "artist", &tags->artist))
106 if (copy_if_tag_type(c, len, "title", &tags->title))
108 if (copy_if_tag_type(c, len, "album", &tags->album))
110 if (copy_if_tag_type(c, len, "year", &tags->year))
112 if (copy_if_tag_type(c, len, "comment", &tags->comment))
114 tag = safe_strdup(c, len);
115 PARA_NOTICE_LOG("unrecognized comment: %s\n", tag);
121 static int spx_packet_callback(ogg_packet *packet, int packet_num,
122 __a_unused int serial, struct afh_info *afhi,
125 struct private_spx_data *psd = private_data;
128 if (packet_num == 0) {
129 ret = spx_process_header(packet->packet, packet->bytes,
133 afhi->channels = psd->shi.channels;
134 afhi->frequency = psd->shi.sample_rate;
135 afhi->bitrate = psd->shi.bitrate / 1000;
136 afhi->techinfo = make_message("%s, v%d", psd->shi.mode->modeName,
137 psd->shi.mode->bitstream_version);
140 if (packet_num == 1) {
141 ret = spx_get_comments(packet->packet, packet->bytes,
145 return 0; /* header complete */
151 static int spx_get_file_info(char *map, size_t numbytes, __a_unused int fd,
152 struct afh_info *afhi)
154 struct private_spx_data psd;
155 struct ogg_afh_callback_info spx_callback_info = {
156 .packet_callback = spx_packet_callback,
157 .private_data = &psd,
160 memset(&psd, 0, sizeof(psd));
161 return ogg_get_file_info(map, numbytes, afhi, &spx_callback_info);
164 static size_t spx_make_meta_packet(struct taginfo *tags, char **result)
168 size_t comment_len = strlen(tags->comment),
169 artist_len = strlen(tags->artist),
170 title_len = strlen(tags->title),
171 album_len = strlen(tags->album),
172 year_len = strlen(tags->year);
173 uint32_t comment_sz = comment_len,
174 artist_sz = artist_len + strlen("artist="),
175 title_sz = title_len + strlen("title="),
176 album_sz = album_len + strlen("album="),
177 year_sz = year_len + strlen("year=");
180 sz = 4 /* comment length (always present) */
182 + 4; /* number of tags */
200 PARA_DEBUG_LOG("meta packet size: %zu bytes\n", sz);
201 /* terminating zero byte for the last sprintf() */
202 buf = p = para_malloc(sz + 1);
203 write_u32(p, comment_sz);
205 strcpy(p, tags->comment);
207 write_u32(p, num_tags);
210 write_u32(p, artist_sz);
212 sprintf(p, "artist=%s", tags->artist);
216 write_u32(p, title_sz);
218 sprintf(p, "title=%s", tags->title);
222 write_u32(p, album_sz);
224 sprintf(p, "album=%s", tags->album);
228 write_u32(p, year_sz);
230 sprintf(p, "year=%s", tags->year);
233 assert(p == buf + sz);
238 static int spx_rewrite_tags(const char *map, size_t mapsize,
239 struct taginfo *tags, int output_fd,
240 __a_unused const char *filename)
246 meta_sz = spx_make_meta_packet(tags, &meta_packet);
247 ret = ogg_rewrite_tags(map, mapsize, output_fd, meta_packet, meta_sz);
252 static const char * const speex_suffixes[] = {"spx", "speex", NULL};
255 * The init function of the ogg/speex audio format handler.
257 * \param afh Pointer to the struct to initialize.
259 void spx_afh_init(struct audio_format_handler *afh)
261 afh->get_file_info = spx_get_file_info,
262 afh->suffixes = speex_suffixes;
263 afh->rewrite_tags = spx_rewrite_tags;