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 const char* speex_suffixes[] = {"spx", "speex", NULL};
123 static int spx_packet_callback(ogg_packet *packet, int packet_num,
124 __a_unused int serial, struct afh_info *afhi,
127 struct private_spx_data *psd = private_data;
130 if (packet_num == 0) {
131 ret = spx_process_header(packet->packet, packet->bytes,
135 afhi->channels = psd->shi.channels;
136 afhi->frequency = psd->shi.sample_rate;
137 afhi->bitrate = psd->shi.bitrate / 1000;
138 afhi->techinfo = make_message("%s, v%d", psd->shi.mode->modeName,
139 psd->shi.mode->bitstream_version);
142 if (packet_num == 1) {
143 ret = spx_get_comments(packet->packet, packet->bytes,
147 return 0; /* header complete */
153 static int spx_get_file_info(char *map, size_t numbytes, __a_unused int fd,
154 struct afh_info *afhi)
156 struct private_spx_data psd;
157 struct ogg_afh_callback_info spx_callback_info = {
158 .packet_callback = spx_packet_callback,
159 .private_data = &psd,
162 memset(&psd, 0, sizeof(psd));
163 return ogg_get_file_info(map, numbytes, afhi, &spx_callback_info);
166 static size_t spx_make_meta_packet(struct taginfo *tags, char **result)
170 size_t comment_len = strlen(tags->comment),
171 artist_len = strlen(tags->artist),
172 title_len = strlen(tags->title),
173 album_len = strlen(tags->album),
174 year_len = strlen(tags->year);
175 uint32_t comment_sz = comment_len,
176 artist_sz = artist_len + strlen("artist="),
177 title_sz = title_len + strlen("title="),
178 album_sz = album_len + strlen("album="),
179 year_sz = year_len + strlen("year=");
182 sz = 4 /* comment length (always present) */
184 + 4; /* number of tags */
202 PARA_DEBUG_LOG("meta packet size: %zu bytes\n", sz);
203 /* terminating zero byte for the last sprintf() */
204 buf = p = para_malloc(sz + 1);
205 write_u32(p, comment_sz);
207 strcpy(p, tags->comment);
209 write_u32(p, num_tags);
212 write_u32(p, artist_sz);
214 sprintf(p, "artist=%s", tags->artist);
218 write_u32(p, title_sz);
220 sprintf(p, "title=%s", tags->title);
224 write_u32(p, album_sz);
226 sprintf(p, "album=%s", tags->album);
230 write_u32(p, year_sz);
232 sprintf(p, "year=%s", tags->year);
235 assert(p == buf + sz);
240 static int spx_rewrite_tags(const char *map, size_t mapsize,
241 struct taginfo *tags, int output_fd,
242 __a_unused const char *filename)
248 meta_sz = spx_make_meta_packet(tags, &meta_packet);
249 ret = ogg_rewrite_tags(map, mapsize, output_fd, meta_packet, meta_sz);
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;