Alexandre Lision | 7c6f4a6 | 2013-09-05 13:27:01 -0400 | [diff] [blame] | 1 | /* |
| 2 | ** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com> |
| 3 | ** Copyright (C) 2007 John ffitch |
| 4 | ** |
| 5 | ** This program is free software ; you can redistribute it and/or modify |
| 6 | ** it under the terms of the GNU Lesser General Public License as published by |
| 7 | ** the Free Software Foundation ; either version 2.1 of the License, or |
| 8 | ** (at your option) any later version. |
| 9 | ** |
| 10 | ** This program is distributed in the hope that it will be useful, |
| 11 | ** but WITHOUT ANY WARRANTY ; without even the implied warranty of |
| 12 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | ** GNU Lesser General Public License for more details. |
| 14 | ** |
| 15 | ** You should have received a copy of the GNU Lesser General Public License |
| 16 | ** along with this program ; if not, write to the Free Software |
| 17 | ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | */ |
| 19 | |
| 20 | #include "sfconfig.h" |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | #include <fcntl.h> |
| 24 | #include <string.h> |
| 25 | #include <ctype.h> |
| 26 | #include <time.h> |
| 27 | #include <math.h> |
| 28 | |
| 29 | #if HAVE_UNISTD_H |
| 30 | #include <unistd.h> |
| 31 | #endif |
| 32 | |
| 33 | #include "sndfile.h" |
| 34 | #include "sfendian.h" |
| 35 | #include "common.h" |
| 36 | |
| 37 | #if HAVE_EXTERNAL_LIBS |
| 38 | |
| 39 | #include <ogg/ogg.h> |
| 40 | |
| 41 | #include "ogg.h" |
| 42 | |
| 43 | static int ogg_close (SF_PRIVATE *psf) ; |
| 44 | static int ogg_stream_classify (SF_PRIVATE *psf, OGG_PRIVATE * odata) ; |
| 45 | static int ogg_page_classify (SF_PRIVATE * psf, const ogg_page * og) ; |
| 46 | |
| 47 | int |
| 48 | ogg_open (SF_PRIVATE *psf) |
| 49 | { OGG_PRIVATE* odata = calloc (1, sizeof (OGG_PRIVATE)) ; |
| 50 | sf_count_t pos = psf_ftell (psf) ; |
| 51 | int error = 0 ; |
| 52 | |
| 53 | psf->container_data = odata ; |
| 54 | psf->container_close = ogg_close ; |
| 55 | |
| 56 | if (psf->file.mode == SFM_RDWR) |
| 57 | return SFE_BAD_MODE_RW ; |
| 58 | |
| 59 | if (psf->file.mode == SFM_READ) |
| 60 | if ((error = ogg_stream_classify (psf, odata)) != 0) |
| 61 | return error ; |
| 62 | |
| 63 | /* Reset everything to an initial state. */ |
| 64 | ogg_sync_clear (&odata->osync) ; |
| 65 | ogg_stream_clear (&odata->ostream) ; |
| 66 | psf_fseek (psf, pos, SEEK_SET) ; |
| 67 | |
| 68 | switch (psf->sf.format) |
| 69 | { case SF_FORMAT_OGG | SF_FORMAT_VORBIS : |
| 70 | return ogg_vorbis_open (psf) ; |
| 71 | |
| 72 | case SF_FORMAT_OGGFLAC : |
| 73 | free (psf->container_data) ; |
| 74 | psf->container_data = NULL ; |
| 75 | psf->container_close = NULL ; |
| 76 | return flac_open (psf) ; |
| 77 | |
| 78 | #if ENABLE_EXPERIMENTAL_CODE |
| 79 | case SF_FORMAT_OGG | SF_FORMAT_SPEEX : |
| 80 | return ogg_speex_open (psf) ; |
| 81 | |
| 82 | case SF_FORMAT_OGG | SF_FORMAT_PCM_16 : |
| 83 | case SF_FORMAT_OGG | SF_FORMAT_PCM_24 : |
| 84 | return ogg_pcm_open (psf) ; |
| 85 | #endif |
| 86 | |
| 87 | default : |
| 88 | break ; |
| 89 | } ; |
| 90 | |
| 91 | psf_log_printf (psf, "%s : mode should be SFM_READ or SFM_WRITE.\n", __func__) ; |
| 92 | return SFE_INTERNAL ; |
| 93 | } /* ogg_open */ |
| 94 | |
| 95 | |
| 96 | static int |
| 97 | ogg_close (SF_PRIVATE *psf) |
| 98 | { OGG_PRIVATE* odata = psf->container_data ; |
| 99 | |
| 100 | ogg_sync_clear (&odata->osync) ; |
| 101 | ogg_stream_clear (&odata->ostream) ; |
| 102 | |
| 103 | return 0 ; |
| 104 | } /* ogg_close */ |
| 105 | |
| 106 | static int |
| 107 | ogg_stream_classify (SF_PRIVATE *psf, OGG_PRIVATE* odata) |
| 108 | { char *buffer ; |
| 109 | int bytes, nn ; |
| 110 | |
| 111 | /* Call this here so it only gets called once, so no memory is leaked. */ |
| 112 | ogg_sync_init (&odata->osync) ; |
| 113 | |
| 114 | odata->eos = 0 ; |
| 115 | |
| 116 | /* Weird stuff happens if these aren't called. */ |
| 117 | ogg_stream_reset (&odata->ostream) ; |
| 118 | ogg_sync_reset (&odata->osync) ; |
| 119 | |
| 120 | /* |
| 121 | ** Grab some data at the head of the stream. We want the first page |
| 122 | ** (which is guaranteed to be small and only contain the Vorbis |
| 123 | ** stream initial header) We need the first page to get the stream |
| 124 | ** serialno. |
| 125 | */ |
| 126 | |
| 127 | /* Expose the buffer */ |
| 128 | buffer = ogg_sync_buffer (&odata->osync, 4096L) ; |
| 129 | |
| 130 | /* Grab the part of the header that has already been read. */ |
| 131 | memcpy (buffer, psf->header, psf->headindex) ; |
| 132 | bytes = psf->headindex ; |
| 133 | |
| 134 | /* Submit a 4k block to libvorbis' Ogg layer */ |
| 135 | bytes += psf_fread (buffer + psf->headindex, 1, 4096 - psf->headindex, psf) ; |
| 136 | ogg_sync_wrote (&odata->osync, bytes) ; |
| 137 | |
| 138 | /* Get the first page. */ |
| 139 | if ((nn = ogg_sync_pageout (&odata->osync, &odata->opage)) != 1) |
| 140 | { |
| 141 | /* Have we simply run out of data? If so, we're done. */ |
| 142 | if (bytes < 4096) |
| 143 | return 0 ; |
| 144 | |
| 145 | /* Error case. Must not be Vorbis data */ |
| 146 | psf_log_printf (psf, "Input does not appear to be an Ogg bitstream.\n") ; |
| 147 | return SFE_MALFORMED_FILE ; |
| 148 | } ; |
| 149 | |
| 150 | /* |
| 151 | ** Get the serial number and set up the rest of decode. |
| 152 | ** Serialno first ; use it to set up a logical stream. |
| 153 | */ |
| 154 | ogg_stream_clear (&odata->ostream) ; |
| 155 | ogg_stream_init (&odata->ostream, ogg_page_serialno (&odata->opage)) ; |
| 156 | |
| 157 | if (ogg_stream_pagein (&odata->ostream, &odata->opage) < 0) |
| 158 | { /* Error ; stream version mismatch perhaps. */ |
| 159 | psf_log_printf (psf, "Error reading first page of Ogg bitstream data\n") ; |
| 160 | return SFE_MALFORMED_FILE ; |
| 161 | } ; |
| 162 | |
| 163 | if (ogg_stream_packetout (&odata->ostream, &odata->opacket) != 1) |
| 164 | { /* No page? must not be vorbis. */ |
| 165 | psf_log_printf (psf, "Error reading initial header packet.\n") ; |
| 166 | return SFE_MALFORMED_FILE ; |
| 167 | } ; |
| 168 | |
| 169 | odata->codec = ogg_page_classify (psf, &odata->opage) ; |
| 170 | |
| 171 | switch (odata->codec) |
| 172 | { case OGG_VORBIS : |
| 173 | psf->sf.format = SF_FORMAT_OGG | SF_FORMAT_VORBIS ; |
| 174 | return 0 ; |
| 175 | |
| 176 | case OGG_FLAC : |
| 177 | case OGG_FLAC0 : |
| 178 | psf->sf.format = SF_FORMAT_OGGFLAC ; |
| 179 | return 0 ; |
| 180 | |
| 181 | case OGG_SPEEX : |
| 182 | psf->sf.format = SF_FORMAT_OGG | SF_FORMAT_SPEEX ; |
| 183 | return 0 ; |
| 184 | |
| 185 | case OGG_PCM : |
| 186 | psf_log_printf (psf, "Detected Ogg/PCM data. This is not supported yet.\n") ; |
| 187 | return SFE_UNIMPLEMENTED ; |
| 188 | |
| 189 | default : |
| 190 | break ; |
| 191 | } ; |
| 192 | |
| 193 | psf_log_printf (psf, "This Ogg bitstream contains some uknown data type.\n") ; |
| 194 | return SFE_UNIMPLEMENTED ; |
| 195 | } /* ogg_stream_classify */ |
| 196 | |
| 197 | /*============================================================================== |
| 198 | */ |
| 199 | |
| 200 | static struct |
| 201 | { const char *str, *name ; |
| 202 | int len, codec ; |
| 203 | } codec_lookup [] = |
| 204 | { { "Annodex", "Annodex", 8, OGG_ANNODEX }, |
| 205 | { "AnxData", "AnxData", 7, OGG_ANXDATA }, |
| 206 | { "\177FLAC", "Flac1", 5, OGG_FLAC }, |
| 207 | { "fLaC", "Flac0", 4, OGG_FLAC0 }, |
| 208 | { "PCM ", "PCM", 8, OGG_PCM }, |
| 209 | { "Speex", "Speex", 5, OGG_SPEEX }, |
| 210 | { "\001vorbis", "Vorbis", 7, OGG_VORBIS }, |
| 211 | } ; |
| 212 | |
| 213 | static int |
| 214 | ogg_page_classify (SF_PRIVATE * psf, const ogg_page * og) |
| 215 | { int k, len ; |
| 216 | |
| 217 | for (k = 0 ; k < ARRAY_LEN (codec_lookup) ; k++) |
| 218 | { if (codec_lookup [k].len > og->body_len) |
| 219 | continue ; |
| 220 | |
| 221 | if (memcmp (og->body, codec_lookup [k].str, codec_lookup [k].len) == 0) |
| 222 | { psf_log_printf (psf, "Ogg stream data : %s\n", codec_lookup [k].name) ; |
| 223 | psf_log_printf (psf, "Stream serialno : %010D\n", (int64_t) ogg_page_serialno (og)) ; |
| 224 | return codec_lookup [k].codec ; |
| 225 | } ; |
| 226 | } ; |
| 227 | |
| 228 | len = og->body_len < 8 ? og->body_len : 8 ; |
| 229 | |
| 230 | psf_log_printf (psf, "Ogg_stream data : '") ; |
| 231 | for (k = 0 ; k < len ; k++) |
| 232 | psf_log_printf (psf, "%c", isprint (og->body [k]) ? og->body [k] : '.') ; |
| 233 | psf_log_printf (psf, "' ") ; |
| 234 | for (k = 0 ; k < len ; k++) |
| 235 | psf_log_printf (psf, " %02x", og->body [k] & 0xff) ; |
| 236 | psf_log_printf (psf, "\n") ; |
| 237 | |
| 238 | return 0 ; |
| 239 | } /* ogg_page_classify */ |
| 240 | |
| 241 | #else /* HAVE_EXTERNAL_LIBS */ |
| 242 | |
| 243 | int |
| 244 | ogg_open (SF_PRIVATE *psf) |
| 245 | { |
| 246 | psf_log_printf (psf, "This version of libsndfile was compiled without Ogg/Vorbis support.\n") ; |
| 247 | return SFE_UNIMPLEMENTED ; |
| 248 | } /* ogg_open */ |
| 249 | |
| 250 | #endif |