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) 2002-2005 Michael Smith <msmith@xiph.org> |
| 4 | ** Copyright (C) 2007 John ffitch |
| 5 | ** |
| 6 | ** This program is free software ; you can redistribute it and/or modify |
| 7 | ** it under the terms of the GNU Lesser General Public License as published by |
| 8 | ** the Free Software Foundation ; either version 2.1 of the License, or |
| 9 | ** (at your option) any later version. |
| 10 | ** |
| 11 | ** This program is distributed in the hope that it will be useful, |
| 12 | ** but WITHOUT ANY WARRANTY ; without even the implied warranty of |
| 13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | ** GNU Lesser General Public License for more details. |
| 15 | ** |
| 16 | ** You should have received a copy of the GNU Lesser General Public License |
| 17 | ** along with this program ; if not, write to the Free Software |
| 18 | ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | ** Much of this code is based on the examples in libvorbis from the |
| 23 | ** XIPHOPHORUS Company http://www.xiph.org/ which has a BSD-style Licence |
| 24 | ** Copyright (c) 2002, Xiph.org Foundation |
| 25 | ** |
| 26 | ** Redistribution and use in source and binary forms, with or without |
| 27 | ** modification, are permitted provided that the following conditions |
| 28 | ** are met: |
| 29 | ** |
| 30 | ** - Redistributions of source code must retain the above copyright |
| 31 | ** notice, this list of conditions and the following disclaimer. |
| 32 | ** |
| 33 | ** - Redistributions in binary form must reproduce the above copyright |
| 34 | ** notice, this list of conditions and the following disclaimer in the |
| 35 | ** documentation and/or other materials provided with the distribution. |
| 36 | ** |
| 37 | ** - Neither the name of the Xiph.org Foundation nor the names of its |
| 38 | ** contributors may be used to endorse or promote products derived from |
| 39 | ** this software without specific prior written permission. |
| 40 | ** |
| 41 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 42 | ** ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 43 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 44 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION |
| 45 | ** OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 46 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 47 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS OF USE, |
| 48 | ** DATA, OR PROFITS ; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 49 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 50 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 51 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 52 | */ |
| 53 | |
| 54 | #include "sfconfig.h" |
| 55 | |
| 56 | #include <stdio.h> |
| 57 | #include <fcntl.h> |
| 58 | #include <string.h> |
| 59 | #include <ctype.h> |
| 60 | #include <time.h> |
| 61 | #include <math.h> |
| 62 | |
| 63 | #if HAVE_UNISTD_H |
| 64 | #include <unistd.h> |
| 65 | #endif |
| 66 | |
| 67 | #include "sndfile.h" |
| 68 | #include "sfendian.h" |
| 69 | #include "common.h" |
| 70 | |
| 71 | #if HAVE_EXTERNAL_LIBS |
| 72 | |
| 73 | #include <ogg/ogg.h> |
| 74 | #include <vorbis/codec.h> |
| 75 | #include <vorbis/vorbisenc.h> |
| 76 | |
| 77 | #include "ogg.h" |
| 78 | |
| 79 | typedef int convert_func (int, void *, int, int, float **) ; |
| 80 | |
| 81 | static int vorbis_read_header (SF_PRIVATE *psf, int log_data) ; |
| 82 | static int vorbis_write_header (SF_PRIVATE *psf, int calc_length) ; |
| 83 | static int vorbis_close (SF_PRIVATE *psf) ; |
| 84 | static int vorbis_command (SF_PRIVATE *psf, int command, void *data, int datasize) ; |
| 85 | static sf_count_t vorbis_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) ; |
| 86 | static sf_count_t vorbis_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; |
| 87 | static sf_count_t vorbis_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; |
| 88 | static sf_count_t vorbis_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; |
| 89 | static sf_count_t vorbis_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; |
| 90 | static sf_count_t vorbis_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; |
| 91 | static sf_count_t vorbis_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; |
| 92 | static sf_count_t vorbis_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; |
| 93 | static sf_count_t vorbis_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; |
| 94 | static sf_count_t vorbis_read_sample (SF_PRIVATE *psf, void *ptr, sf_count_t lens, convert_func *transfn) ; |
| 95 | static sf_count_t vorbis_length (SF_PRIVATE *psf) ; |
| 96 | |
| 97 | typedef struct |
| 98 | { int id ; |
| 99 | const char *name ; |
| 100 | } STR_PAIRS ; |
| 101 | |
| 102 | static STR_PAIRS vorbis_metatypes [] = |
| 103 | { { SF_STR_TITLE, "Title" }, |
| 104 | { SF_STR_COPYRIGHT, "Copyright" }, |
| 105 | { SF_STR_SOFTWARE, "Software" }, |
| 106 | { SF_STR_ARTIST, "Artist" }, |
| 107 | { SF_STR_COMMENT, "Comment" }, |
| 108 | { SF_STR_DATE, "Date" }, |
| 109 | { SF_STR_ALBUM, "Album" }, |
| 110 | { SF_STR_LICENSE, "License" }, |
| 111 | } ; |
| 112 | |
| 113 | typedef struct |
| 114 | { /* Count current location */ |
| 115 | sf_count_t loc ; |
| 116 | /* Struct that stores all the static vorbis bitstream settings */ |
| 117 | vorbis_info vinfo ; |
| 118 | /* Struct that stores all the bitstream user comments */ |
| 119 | vorbis_comment vcomment ; |
| 120 | /* Ventral working state for the packet->PCM decoder */ |
| 121 | vorbis_dsp_state vdsp ; |
| 122 | /* Local working space for packet->PCM decode */ |
| 123 | vorbis_block vblock ; |
| 124 | |
| 125 | /* Encoding quality in range [0.0, 1.0]. */ |
| 126 | double quality ; |
| 127 | } VORBIS_PRIVATE ; |
| 128 | |
| 129 | static int |
| 130 | vorbis_read_header (SF_PRIVATE *psf, int log_data) |
| 131 | { |
| 132 | OGG_PRIVATE *odata = (OGG_PRIVATE *) psf->container_data ; |
| 133 | VORBIS_PRIVATE *vdata = (VORBIS_PRIVATE *) psf->codec_data ; |
| 134 | char *buffer ; |
| 135 | int bytes ; |
| 136 | int i, nn ; |
| 137 | |
| 138 | odata->eos = 0 ; |
| 139 | |
| 140 | /* Weird stuff happens if these aren't called. */ |
| 141 | ogg_stream_reset (&odata->ostream) ; |
| 142 | ogg_sync_reset (&odata->osync) ; |
| 143 | |
| 144 | /* |
| 145 | ** Grab some data at the head of the stream. We want the first page |
| 146 | ** (which is guaranteed to be small and only contain the Vorbis |
| 147 | ** stream initial header) We need the first page to get the stream |
| 148 | ** serialno. |
| 149 | */ |
| 150 | |
| 151 | /* Expose the buffer */ |
| 152 | buffer = ogg_sync_buffer (&odata->osync, 4096L) ; |
| 153 | |
| 154 | /* Grab the part of the header that has already been read. */ |
| 155 | memcpy (buffer, psf->header, psf->headindex) ; |
| 156 | bytes = psf->headindex ; |
| 157 | |
| 158 | /* Submit a 4k block to libvorbis' Ogg layer */ |
| 159 | bytes += psf_fread (buffer + psf->headindex, 1, 4096 - psf->headindex, psf) ; |
| 160 | ogg_sync_wrote (&odata->osync, bytes) ; |
| 161 | |
| 162 | /* Get the first page. */ |
| 163 | if ((nn = ogg_sync_pageout (&odata->osync, &odata->opage)) != 1) |
| 164 | { |
| 165 | /* Have we simply run out of data? If so, we're done. */ |
| 166 | if (bytes < 4096) |
| 167 | return 0 ; |
| 168 | |
| 169 | /* Error case. Must not be Vorbis data */ |
| 170 | psf_log_printf (psf, "Input does not appear to be an Ogg bitstream.\n") ; |
| 171 | return SFE_MALFORMED_FILE ; |
| 172 | } ; |
| 173 | |
| 174 | /* |
| 175 | ** Get the serial number and set up the rest of decode. |
| 176 | ** Serialno first ; use it to set up a logical stream. |
| 177 | */ |
| 178 | ogg_stream_clear (&odata->ostream) ; |
| 179 | ogg_stream_init (&odata->ostream, ogg_page_serialno (&odata->opage)) ; |
| 180 | |
| 181 | if (ogg_stream_pagein (&odata->ostream, &odata->opage) < 0) |
| 182 | { /* Error ; stream version mismatch perhaps. */ |
| 183 | psf_log_printf (psf, "Error reading first page of Ogg bitstream data\n") ; |
| 184 | return SFE_MALFORMED_FILE ; |
| 185 | } ; |
| 186 | |
| 187 | if (ogg_stream_packetout (&odata->ostream, &odata->opacket) != 1) |
| 188 | { /* No page? must not be vorbis. */ |
| 189 | psf_log_printf (psf, "Error reading initial header packet.\n") ; |
| 190 | return SFE_MALFORMED_FILE ; |
| 191 | } ; |
| 192 | |
| 193 | /* |
| 194 | ** This function (vorbis_read_header) gets called multiple times, so the OGG |
| 195 | ** and vorbis structs have to be cleared every time we pass through to |
| 196 | ** prevent memory leaks. |
| 197 | */ |
| 198 | vorbis_block_clear (&vdata->vblock) ; |
| 199 | vorbis_dsp_clear (&vdata->vdsp) ; |
| 200 | vorbis_comment_clear (&vdata->vcomment) ; |
| 201 | vorbis_info_clear (&vdata->vinfo) ; |
| 202 | |
| 203 | /* |
| 204 | ** Extract the initial header from the first page and verify that the |
| 205 | ** Ogg bitstream is in fact Vorbis data. |
| 206 | ** |
| 207 | ** I handle the initial header first instead of just having the code |
| 208 | ** read all three Vorbis headers at once because reading the initial |
| 209 | ** header is an easy way to identify a Vorbis bitstream and it's |
| 210 | ** useful to see that functionality seperated out. |
| 211 | */ |
| 212 | vorbis_info_init (&vdata->vinfo) ; |
| 213 | vorbis_comment_init (&vdata->vcomment) ; |
| 214 | |
| 215 | if (vorbis_synthesis_headerin (&vdata->vinfo, &vdata->vcomment, &odata->opacket) < 0) |
| 216 | { /* Error case ; not a vorbis header. */ |
| 217 | psf_log_printf (psf, "Found Vorbis in stream header, but vorbis_synthesis_headerin failed.\n") ; |
| 218 | return SFE_MALFORMED_FILE ; |
| 219 | } ; |
| 220 | |
| 221 | /* |
| 222 | ** Common Ogg metadata fields? |
| 223 | ** TITLE, VERSION, ALBUM, TRACKNUMBER, ARTIST, PERFORMER, COPYRIGHT, LICENSE, |
| 224 | ** ORGANIZATION, DESCRIPTION, GENRE, DATE, LOCATION, CONTACT, ISRC, |
| 225 | */ |
| 226 | |
| 227 | if (log_data) |
| 228 | { int k ; |
| 229 | |
| 230 | for (k = 0 ; k < ARRAY_LEN (vorbis_metatypes) ; k++) |
| 231 | { char *dd ; |
| 232 | |
| 233 | dd = vorbis_comment_query (&vdata->vcomment, vorbis_metatypes [k].name, 0) ; |
| 234 | if (dd == NULL) |
| 235 | continue ; |
| 236 | psf_store_string (psf, vorbis_metatypes [k].id, dd) ; |
| 237 | } ; |
| 238 | } ; |
| 239 | |
| 240 | /* |
| 241 | ** At this point, we're sure we're Vorbis. We've set up the logical (Ogg) |
| 242 | ** bitstream decoder. Get the comment and codebook headers and set up the |
| 243 | ** Vorbis decoder. |
| 244 | ** |
| 245 | ** The next two packets in order are the comment and codebook headers. |
| 246 | ** They're likely large and may span multiple pages. Thus we reead |
| 247 | ** and submit data until we get our two pacakets, watching that no |
| 248 | ** pages are missing. If a page is missing, error out ; losing a |
| 249 | ** header page is the only place where missing data is fatal. |
| 250 | */ |
| 251 | |
| 252 | i = 0 ; /* Count of number of packets read */ |
| 253 | while (i < 2) |
| 254 | { int result = ogg_sync_pageout (&odata->osync, &odata->opage) ; |
| 255 | if (result == 0) |
| 256 | { /* Need more data */ |
| 257 | buffer = ogg_sync_buffer (&odata->osync, 4096) ; |
| 258 | bytes = psf_fread (buffer, 1, 4096, psf) ; |
| 259 | |
| 260 | if (bytes == 0 && i < 2) |
| 261 | { psf_log_printf (psf, "End of file before finding all Vorbis headers!\n") ; |
| 262 | return SFE_MALFORMED_FILE ; |
| 263 | } ; |
| 264 | nn = ogg_sync_wrote (&odata->osync, bytes) ; |
| 265 | } |
| 266 | else if (result == 1) |
| 267 | { /* |
| 268 | ** Don't complain about missing or corrupt data yet. We'll |
| 269 | ** catch it at the packet output phase. |
| 270 | ** |
| 271 | ** We can ignore any errors here as they'll also become apparent |
| 272 | ** at packetout. |
| 273 | */ |
| 274 | nn = ogg_stream_pagein (&odata->ostream, &odata->opage) ; |
| 275 | while (i < 2) |
| 276 | { result = ogg_stream_packetout (&odata->ostream, &odata->opacket) ; |
| 277 | if (result == 0) |
| 278 | break ; |
| 279 | if (result < 0) |
| 280 | { /* Uh oh ; data at some point was corrupted or missing! |
| 281 | ** We can't tolerate that in a header. Die. */ |
| 282 | psf_log_printf (psf, "Corrupt secondary header. Exiting.\n") ; |
| 283 | return SFE_MALFORMED_FILE ; |
| 284 | } ; |
| 285 | |
| 286 | vorbis_synthesis_headerin (&vdata->vinfo, &vdata->vcomment, &odata->opacket) ; |
| 287 | i++ ; |
| 288 | } ; |
| 289 | } ; |
| 290 | } ; |
| 291 | |
| 292 | if (log_data) |
| 293 | { int printed_metadata_msg = 0 ; |
| 294 | int k ; |
| 295 | |
| 296 | psf_log_printf (psf, "Bitstream is %d channel, %D Hz\n", vdata->vinfo.channels, vdata->vinfo.rate) ; |
| 297 | psf_log_printf (psf, "Encoded by : %s\n", vdata->vcomment.vendor) ; |
| 298 | |
| 299 | /* Throw the comments plus a few lines about the bitstream we're decoding. */ |
| 300 | for (k = 0 ; k < ARRAY_LEN (vorbis_metatypes) ; k++) |
| 301 | { char *dd ; |
| 302 | |
| 303 | dd = vorbis_comment_query (&vdata->vcomment, vorbis_metatypes [k].name, 0) ; |
| 304 | if (dd == NULL) |
| 305 | continue ; |
| 306 | |
| 307 | if (printed_metadata_msg == 0) |
| 308 | { psf_log_printf (psf, "Metadata :\n") ; |
| 309 | printed_metadata_msg = 1 ; |
| 310 | } ; |
| 311 | |
| 312 | psf_store_string (psf, vorbis_metatypes [k].id, dd) ; |
| 313 | psf_log_printf (psf, " %-10s : %s\n", vorbis_metatypes [k].name, dd) ; |
| 314 | } ; |
| 315 | |
| 316 | psf_log_printf (psf, "End\n") ; |
| 317 | } ; |
| 318 | |
| 319 | psf->sf.samplerate = vdata->vinfo.rate ; |
| 320 | psf->sf.channels = vdata->vinfo.channels ; |
| 321 | psf->sf.format = SF_FORMAT_OGG | SF_FORMAT_VORBIS ; |
| 322 | |
| 323 | /* OK, got and parsed all three headers. Initialize the Vorbis |
| 324 | ** packet->PCM decoder. |
| 325 | ** Central decode state. */ |
| 326 | vorbis_synthesis_init (&vdata->vdsp, &vdata->vinfo) ; |
| 327 | |
| 328 | /* Local state for most of the decode so multiple block decodes can |
| 329 | ** proceed in parallel. We could init multiple vorbis_block structures |
| 330 | ** for vd here. */ |
| 331 | vorbis_block_init (&vdata->vdsp, &vdata->vblock) ; |
| 332 | |
| 333 | vdata->loc = 0 ; |
| 334 | |
| 335 | return 0 ; |
| 336 | } /* vorbis_read_header */ |
| 337 | |
| 338 | static int |
| 339 | vorbis_write_header (SF_PRIVATE *psf, int UNUSED (calc_length)) |
| 340 | { |
| 341 | OGG_PRIVATE *odata = (OGG_PRIVATE *) psf->container_data ; |
| 342 | VORBIS_PRIVATE *vdata = (VORBIS_PRIVATE *) psf->codec_data ; |
| 343 | int k, ret ; |
| 344 | |
| 345 | vorbis_info_init (&vdata->vinfo) ; |
| 346 | |
| 347 | /* The style of encoding should be selectable here, VBR quality mode. */ |
| 348 | ret = vorbis_encode_init_vbr (&vdata->vinfo, psf->sf.channels, psf->sf.samplerate, vdata->quality) ; |
| 349 | |
| 350 | #if 0 |
| 351 | ret = vorbis_encode_init (&vdata->vinfo, psf->sf.channels, psf->sf.samplerate, -1, 128000, -1) ; /* average bitrate mode */ |
| 352 | ret = ( vorbis_encode_setup_managed (&vdata->vinfo, psf->sf.channels, |
| 353 | psf->sf.samplerate, -1, 128000, -1) || |
| 354 | vorbis_encode_ctl (&vdata->vinfo, OV_ECTL_RATEMANAGE_AVG, NULL) || |
| 355 | vorbis_encode_setup_init (&vdata->vinfo)) ; |
| 356 | #endif |
| 357 | if (ret) |
| 358 | return SFE_BAD_OPEN_FORMAT ; |
| 359 | |
| 360 | vdata->loc = 0 ; |
| 361 | |
| 362 | /* add a comment */ |
| 363 | vorbis_comment_init (&vdata->vcomment) ; |
| 364 | |
| 365 | vorbis_comment_add_tag (&vdata->vcomment, "ENCODER", "libsndfile") ; |
| 366 | for (k = 0 ; k < SF_MAX_STRINGS ; k++) |
| 367 | { const char * name ; |
| 368 | |
| 369 | if (psf->strings [k].type == 0) |
| 370 | break ; |
| 371 | |
| 372 | switch (psf->strings [k].type) |
| 373 | { case SF_STR_TITLE : name = "TITLE" ; break ; |
| 374 | case SF_STR_COPYRIGHT : name = "COPYRIGHT" ; break ; |
| 375 | case SF_STR_SOFTWARE : name = "SOFTWARE" ; break ; |
| 376 | case SF_STR_ARTIST : name = "ARTIST" ; break ; |
| 377 | case SF_STR_COMMENT : name = "COMMENT" ; break ; |
| 378 | case SF_STR_DATE : name = "DATE" ; break ; |
| 379 | case SF_STR_ALBUM : name = "ALBUM" ; break ; |
| 380 | case SF_STR_LICENSE : name = "LICENSE" ; break ; |
| 381 | default : continue ; |
| 382 | } ; |
| 383 | |
| 384 | vorbis_comment_add_tag (&vdata->vcomment, name, psf->strings [k].str) ; |
| 385 | } ; |
| 386 | |
| 387 | /* set up the analysis state and auxiliary encoding storage */ |
| 388 | vorbis_analysis_init (&vdata->vdsp, &vdata->vinfo) ; |
| 389 | vorbis_block_init (&vdata->vdsp, &vdata->vblock) ; |
| 390 | |
| 391 | /* |
| 392 | ** Set up our packet->stream encoder. |
| 393 | ** Pick a random serial number ; that way we can more likely build |
| 394 | ** chained streams just by concatenation. |
| 395 | */ |
| 396 | |
| 397 | ogg_stream_init (&odata->ostream, psf_rand_int32 ()) ; |
| 398 | |
| 399 | /* Vorbis streams begin with three headers ; the initial header (with |
| 400 | most of the codec setup parameters) which is mandated by the Ogg |
| 401 | bitstream spec. The second header holds any comment fields. The |
| 402 | third header holds the bitstream codebook. We merely need to |
| 403 | make the headers, then pass them to libvorbis one at a time ; |
| 404 | libvorbis handles the additional Ogg bitstream constraints */ |
| 405 | |
| 406 | { ogg_packet header ; |
| 407 | ogg_packet header_comm ; |
| 408 | ogg_packet header_code ; |
| 409 | int result ; |
| 410 | |
| 411 | vorbis_analysis_headerout (&vdata->vdsp, &vdata->vcomment, &header, &header_comm, &header_code) ; |
| 412 | ogg_stream_packetin (&odata->ostream, &header) ; /* automatically placed in its own page */ |
| 413 | ogg_stream_packetin (&odata->ostream, &header_comm) ; |
| 414 | ogg_stream_packetin (&odata->ostream, &header_code) ; |
| 415 | |
| 416 | /* This ensures the actual |
| 417 | * audio data will start on a new page, as per spec |
| 418 | */ |
| 419 | while ((result = ogg_stream_flush (&odata->ostream, &odata->opage)) != 0) |
| 420 | { psf_fwrite (odata->opage.header, 1, odata->opage.header_len, psf) ; |
| 421 | psf_fwrite (odata->opage.body, 1, odata->opage.body_len, psf) ; |
| 422 | } ; |
| 423 | } |
| 424 | |
| 425 | return 0 ; |
| 426 | } /* vorbis_write_header */ |
| 427 | |
| 428 | static int |
| 429 | vorbis_close (SF_PRIVATE *psf) |
| 430 | { OGG_PRIVATE* odata = psf->container_data ; |
| 431 | VORBIS_PRIVATE *vdata = psf->codec_data ; |
| 432 | |
| 433 | if (odata == NULL || vdata == NULL) |
| 434 | return 0 ; |
| 435 | |
| 436 | /* Clean up this logical bitstream ; before exit we shuld see if we're |
| 437 | ** followed by another [chained]. */ |
| 438 | |
| 439 | if (psf->file.mode == SFM_WRITE) |
| 440 | { |
| 441 | if (psf->write_current <= 0) |
| 442 | vorbis_write_header (psf, 0) ; |
| 443 | |
| 444 | vorbis_analysis_wrote (&vdata->vdsp, 0) ; |
| 445 | while (vorbis_analysis_blockout (&vdata->vdsp, &vdata->vblock) == 1) |
| 446 | { |
| 447 | |
| 448 | /* analysis, assume we want to use bitrate management */ |
| 449 | vorbis_analysis (&vdata->vblock, NULL) ; |
| 450 | vorbis_bitrate_addblock (&vdata->vblock) ; |
| 451 | |
| 452 | while (vorbis_bitrate_flushpacket (&vdata->vdsp, &odata->opacket)) |
| 453 | { /* weld the packet into the bitstream */ |
| 454 | ogg_stream_packetin (&odata->ostream, &odata->opacket) ; |
| 455 | |
| 456 | /* write out pages (if any) */ |
| 457 | while (!odata->eos) |
| 458 | { int result = ogg_stream_pageout (&odata->ostream, &odata->opage) ; |
| 459 | if (result == 0) break ; |
| 460 | psf_fwrite (odata->opage.header, 1, odata->opage.header_len, psf) ; |
| 461 | psf_fwrite (odata->opage.body, 1, odata->opage.body_len, psf) ; |
| 462 | |
| 463 | /* this could be set above, but for illustrative purposes, I do |
| 464 | it here (to show that vorbis does know where the stream ends) */ |
| 465 | |
| 466 | if (ogg_page_eos (&odata->opage)) odata->eos = 1 ; |
| 467 | } |
| 468 | } |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | /* ogg_page and ogg_packet structs always point to storage in |
| 473 | libvorbis. They are never freed or manipulated directly */ |
| 474 | |
| 475 | vorbis_block_clear (&vdata->vblock) ; |
| 476 | vorbis_dsp_clear (&vdata->vdsp) ; |
| 477 | vorbis_comment_clear (&vdata->vcomment) ; |
| 478 | vorbis_info_clear (&vdata->vinfo) ; |
| 479 | |
| 480 | return 0 ; |
| 481 | } /* vorbis_close */ |
| 482 | |
| 483 | int |
| 484 | ogg_vorbis_open (SF_PRIVATE *psf) |
| 485 | { OGG_PRIVATE* odata = psf->container_data ; |
| 486 | VORBIS_PRIVATE* vdata = calloc (1, sizeof (VORBIS_PRIVATE)) ; |
| 487 | int error = 0 ; |
| 488 | |
| 489 | if (odata == NULL) |
| 490 | { psf_log_printf (psf, "%s : odata is NULL???\n", __func__) ; |
| 491 | return SFE_INTERNAL ; |
| 492 | } ; |
| 493 | |
| 494 | psf->codec_data = vdata ; |
| 495 | |
| 496 | if (psf->file.mode == SFM_RDWR) |
| 497 | return SFE_BAD_MODE_RW ; |
| 498 | |
| 499 | psf_log_printf (psf, "Vorbis library version : %s\n", vorbis_version_string ()) ; |
| 500 | |
| 501 | if (psf->file.mode == SFM_READ) |
| 502 | { /* Call this here so it only gets called once, so no memory is leaked. */ |
| 503 | ogg_sync_init (&odata->osync) ; |
| 504 | |
| 505 | if ((error = vorbis_read_header (psf, 1))) |
| 506 | return error ; |
| 507 | |
| 508 | psf->read_short = vorbis_read_s ; |
| 509 | psf->read_int = vorbis_read_i ; |
| 510 | psf->read_float = vorbis_read_f ; |
| 511 | psf->read_double = vorbis_read_d ; |
| 512 | psf->sf.frames = vorbis_length (psf) ; |
| 513 | } ; |
| 514 | |
| 515 | psf->codec_close = vorbis_close ; |
| 516 | if (psf->file.mode == SFM_WRITE) |
| 517 | { |
| 518 | /* Set the default vorbis quality here. */ |
| 519 | vdata->quality = 0.4 ; |
| 520 | |
| 521 | psf->write_header = vorbis_write_header ; |
| 522 | psf->write_short = vorbis_write_s ; |
| 523 | psf->write_int = vorbis_write_i ; |
| 524 | psf->write_float = vorbis_write_f ; |
| 525 | psf->write_double = vorbis_write_d ; |
| 526 | |
| 527 | psf->sf.frames = SF_COUNT_MAX ; /* Unknown really */ |
| 528 | psf->str_flags = SF_STR_ALLOW_START ; |
| 529 | } ; |
| 530 | |
| 531 | psf->bytewidth = 1 ; |
| 532 | psf->blockwidth = psf->bytewidth * psf->sf.channels ; |
| 533 | |
| 534 | psf->seek = vorbis_seek ; |
| 535 | psf->command = vorbis_command ; |
| 536 | |
| 537 | /* FIXME, FIXME, FIXME : Hack these here for now and correct later. */ |
| 538 | psf->sf.format = SF_FORMAT_OGG | SF_FORMAT_VORBIS ; |
| 539 | psf->sf.sections = 1 ; |
| 540 | |
| 541 | psf->datalength = 1 ; |
| 542 | psf->dataoffset = 0 ; |
| 543 | /* End FIXME. */ |
| 544 | |
| 545 | return error ; |
| 546 | } /* ogg_vorbis_open */ |
| 547 | |
| 548 | static int |
| 549 | vorbis_command (SF_PRIVATE *psf, int command, void * data, int datasize) |
| 550 | { VORBIS_PRIVATE *vdata = (VORBIS_PRIVATE *) psf->codec_data ; |
| 551 | |
| 552 | switch (command) |
| 553 | { case SFC_SET_VBR_ENCODING_QUALITY : |
| 554 | if (data == NULL || datasize != sizeof (double)) |
| 555 | return SF_FALSE ; |
| 556 | |
| 557 | if (psf->have_written) |
| 558 | return SF_FALSE ; |
| 559 | |
| 560 | vdata->quality = *((double *) data) ; |
| 561 | |
| 562 | /* Clip range. */ |
| 563 | vdata->quality = SF_MAX (0.0, SF_MIN (1.0, vdata->quality)) ; |
| 564 | |
| 565 | psf_log_printf (psf, "%s : Setting SFC_SET_VBR_ENCODING_QUALITY to %f.\n", __func__, vdata->quality) ; |
| 566 | return SF_TRUE ; |
| 567 | |
| 568 | default : |
| 569 | return SF_FALSE ; |
| 570 | } ; |
| 571 | |
| 572 | return SF_FALSE ; |
| 573 | } /* vorbis_command */ |
| 574 | |
| 575 | static int |
| 576 | vorbis_rnull (int samples, void *UNUSED (vptr), int UNUSED (off) , int channels, float **UNUSED (pcm)) |
| 577 | { |
| 578 | return samples * channels ; |
| 579 | } /* vorbis_rnull */ |
| 580 | |
| 581 | static int |
| 582 | vorbis_rshort (int samples, void *vptr, int off, int channels, float **pcm) |
| 583 | { |
| 584 | short *ptr = (short*) vptr + off ; |
| 585 | int i = 0, j, n ; |
| 586 | for (j = 0 ; j < samples ; j++) |
| 587 | for (n = 0 ; n < channels ; n++) |
| 588 | ptr [i++] = lrintf (pcm [n][j] * 32767.0f) ; |
| 589 | return i ; |
| 590 | } /* vorbis_rshort */ |
| 591 | |
| 592 | static int |
| 593 | vorbis_rint (int samples, void *vptr, int off, int channels, float **pcm) |
| 594 | { |
| 595 | int *ptr = (int*) vptr + off ; |
| 596 | int i = 0, j, n ; |
| 597 | |
| 598 | for (j = 0 ; j < samples ; j++) |
| 599 | for (n = 0 ; n < channels ; n++) |
| 600 | ptr [i++] = lrintf (pcm [n][j] * 2147483647.0f) ; |
| 601 | return i ; |
| 602 | } /* vorbis_rint */ |
| 603 | |
| 604 | static int |
| 605 | vorbis_rfloat (int samples, void *vptr, int off, int channels, float **pcm) |
| 606 | { |
| 607 | float *ptr = (float*) vptr + off ; |
| 608 | int i = 0, j, n ; |
| 609 | for (j = 0 ; j < samples ; j++) |
| 610 | for (n = 0 ; n < channels ; n++) |
| 611 | ptr [i++] = pcm [n][j] ; |
| 612 | return i ; |
| 613 | } /* vorbis_rfloat */ |
| 614 | |
| 615 | static int |
| 616 | vorbis_rdouble (int samples, void *vptr, int off, int channels, float **pcm) |
| 617 | { |
| 618 | double *ptr = (double*) vptr + off ; |
| 619 | int i = 0, j, n ; |
| 620 | for (j = 0 ; j < samples ; j++) |
| 621 | for (n = 0 ; n < channels ; n++) |
| 622 | ptr [i++] = pcm [n][j] ; |
| 623 | return i ; |
| 624 | } /* vorbis_rdouble */ |
| 625 | |
| 626 | |
| 627 | static sf_count_t |
| 628 | vorbis_read_sample (SF_PRIVATE *psf, void *ptr, sf_count_t lens, convert_func *transfn) |
| 629 | { |
| 630 | VORBIS_PRIVATE *vdata = psf->codec_data ; |
| 631 | OGG_PRIVATE *odata = psf->container_data ; |
| 632 | int len, samples, i = 0 ; |
| 633 | float **pcm ; |
| 634 | |
| 635 | len = lens / psf->sf.channels ; |
| 636 | |
| 637 | while ((samples = vorbis_synthesis_pcmout (&vdata->vdsp, &pcm)) > 0) |
| 638 | { if (samples > len) samples = len ; |
| 639 | i += transfn (samples, ptr, i, psf->sf.channels, pcm) ; |
| 640 | len -= samples ; |
| 641 | /* tell libvorbis how many samples we actually consumed */ |
| 642 | vorbis_synthesis_read (&vdata->vdsp, samples) ; |
| 643 | vdata->loc += samples ; |
| 644 | if (len == 0) |
| 645 | return i ; /* Is this necessary */ |
| 646 | } |
| 647 | goto start0 ; /* Jump into the nasty nest */ |
| 648 | while (len > 0 && !odata->eos) |
| 649 | { |
| 650 | while (len > 0 && !odata->eos) |
| 651 | { int result = ogg_sync_pageout (&odata->osync, &odata->opage) ; |
| 652 | if (result == 0) break ; /* need more data */ |
| 653 | if (result < 0) |
| 654 | { /* missing or corrupt data at this page position */ |
| 655 | psf_log_printf (psf, "Corrupt or missing data in bitstream ; continuing...\n") ; |
| 656 | } |
| 657 | else |
| 658 | { /* can safely ignore errors at this point */ |
| 659 | ogg_stream_pagein (&odata->ostream, &odata->opage) ; |
| 660 | start0: |
| 661 | while (1) |
| 662 | { result = ogg_stream_packetout (&odata->ostream, &odata->opacket) ; |
| 663 | if (result == 0) |
| 664 | break ; /* need more data */ |
| 665 | if (result < 0) |
| 666 | { /* missing or corrupt data at this page position */ |
| 667 | /* no reason to complain ; already complained above */ |
| 668 | } |
| 669 | else |
| 670 | { /* we have a packet. Decode it */ |
| 671 | if (vorbis_synthesis (&vdata->vblock, &odata->opacket) == 0) /* test for success! */ |
| 672 | vorbis_synthesis_blockin (&vdata->vdsp, &vdata->vblock) ; |
| 673 | /* |
| 674 | **pcm is a multichannel float vector. In stereo, for |
| 675 | example, pcm [0] is left, and pcm [1] is right. samples is |
| 676 | the size of each channel. Convert the float values |
| 677 | (-1.<=range<=1.) to whatever PCM format and write it out */ |
| 678 | |
| 679 | while ((samples = vorbis_synthesis_pcmout (&vdata->vdsp, &pcm)) > 0) |
| 680 | { if (samples>len) samples = len ; |
| 681 | i += transfn (samples, ptr, i, psf->sf.channels, pcm) ; |
| 682 | len -= samples ; |
| 683 | /* tell libvorbis how many samples we actually consumed */ |
| 684 | vorbis_synthesis_read (&vdata->vdsp, samples) ; |
| 685 | vdata->loc += samples ; |
| 686 | if (len == 0) |
| 687 | return i ; /* Is this necessary */ |
| 688 | } ; |
| 689 | } |
| 690 | } |
| 691 | if (ogg_page_eos (&odata->opage)) odata->eos = 1 ; |
| 692 | } |
| 693 | } |
| 694 | if (!odata->eos) |
| 695 | { char *buffer ; |
| 696 | int bytes ; |
| 697 | buffer = ogg_sync_buffer (&odata->osync, 4096) ; |
| 698 | bytes = psf_fread (buffer, 1, 4096, psf) ; |
| 699 | ogg_sync_wrote (&odata->osync, bytes) ; |
| 700 | if (bytes == 0) odata->eos = 1 ; |
| 701 | } |
| 702 | } |
| 703 | return i ; |
| 704 | } /* vorbis_read_sample */ |
| 705 | |
| 706 | static sf_count_t |
| 707 | vorbis_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t lens) |
| 708 | { return vorbis_read_sample (psf, (void*) ptr, lens, vorbis_rshort) ; |
| 709 | } /* vorbis_read_s */ |
| 710 | |
| 711 | static sf_count_t |
| 712 | vorbis_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t lens) |
| 713 | { return vorbis_read_sample (psf, (void*) ptr, lens, vorbis_rint) ; |
| 714 | } /* vorbis_read_i */ |
| 715 | |
| 716 | static sf_count_t |
| 717 | vorbis_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t lens) |
| 718 | { return vorbis_read_sample (psf, (void*) ptr, lens, vorbis_rfloat) ; |
| 719 | } /* vorbis_read_f */ |
| 720 | |
| 721 | static sf_count_t |
| 722 | vorbis_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t lens) |
| 723 | { return vorbis_read_sample (psf, (void*) ptr, lens, vorbis_rdouble) ; |
| 724 | } /* vorbis_read_d */ |
| 725 | |
| 726 | /*============================================================================== |
| 727 | */ |
| 728 | |
| 729 | static void |
| 730 | vorbis_write_samples (SF_PRIVATE *psf, OGG_PRIVATE *odata, VORBIS_PRIVATE *vdata, int in_frames) |
| 731 | { |
| 732 | vorbis_analysis_wrote (&vdata->vdsp, in_frames) ; |
| 733 | |
| 734 | /* |
| 735 | ** Vorbis does some data preanalysis, then divvies up blocks for |
| 736 | ** more involved (potentially parallel) processing. Get a single |
| 737 | ** block for encoding now. |
| 738 | */ |
| 739 | while (vorbis_analysis_blockout (&vdata->vdsp, &vdata->vblock) == 1) |
| 740 | { |
| 741 | /* analysis, assume we want to use bitrate management */ |
| 742 | vorbis_analysis (&vdata->vblock, NULL) ; |
| 743 | vorbis_bitrate_addblock (&vdata->vblock) ; |
| 744 | |
| 745 | while (vorbis_bitrate_flushpacket (&vdata->vdsp, &odata->opacket)) |
| 746 | { |
| 747 | /* weld the packet into the bitstream */ |
| 748 | ogg_stream_packetin (&odata->ostream, &odata->opacket) ; |
| 749 | |
| 750 | /* write out pages (if any) */ |
| 751 | while (!odata->eos) |
| 752 | { int result = ogg_stream_pageout (&odata->ostream, &odata->opage) ; |
| 753 | if (result == 0) |
| 754 | break ; |
| 755 | psf_fwrite (odata->opage.header, 1, odata->opage.header_len, psf) ; |
| 756 | psf_fwrite (odata->opage.body, 1, odata->opage.body_len, psf) ; |
| 757 | |
| 758 | /* This could be set above, but for illustrative purposes, I do |
| 759 | ** it here (to show that vorbis does know where the stream ends) */ |
| 760 | if (ogg_page_eos (&odata->opage)) |
| 761 | odata->eos = 1 ; |
| 762 | } ; |
| 763 | } ; |
| 764 | } ; |
| 765 | |
| 766 | vdata->loc += in_frames ; |
| 767 | } /* vorbis_write_data */ |
| 768 | |
| 769 | |
| 770 | static sf_count_t |
| 771 | vorbis_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t lens) |
| 772 | { |
| 773 | int i, m, j = 0 ; |
| 774 | OGG_PRIVATE *odata = (OGG_PRIVATE *) psf->container_data ; |
| 775 | VORBIS_PRIVATE *vdata = (VORBIS_PRIVATE *) psf->codec_data ; |
| 776 | int in_frames = lens / psf->sf.channels ; |
| 777 | float **buffer = vorbis_analysis_buffer (&vdata->vdsp, in_frames) ; |
| 778 | for (i = 0 ; i < in_frames ; i++) |
| 779 | for (m = 0 ; m < psf->sf.channels ; m++) |
| 780 | buffer [m][i] = (float) (ptr [j++]) / 32767.0f ; |
| 781 | |
| 782 | vorbis_write_samples (psf, odata, vdata, in_frames) ; |
| 783 | |
| 784 | return lens ; |
| 785 | } /* vorbis_write_s */ |
| 786 | |
| 787 | static sf_count_t |
| 788 | vorbis_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t lens) |
| 789 | { int i, m, j = 0 ; |
| 790 | OGG_PRIVATE *odata = (OGG_PRIVATE *) psf->container_data ; |
| 791 | VORBIS_PRIVATE *vdata = (VORBIS_PRIVATE *) psf->codec_data ; |
| 792 | int in_frames = lens / psf->sf.channels ; |
| 793 | float **buffer = vorbis_analysis_buffer (&vdata->vdsp, in_frames) ; |
| 794 | for (i = 0 ; i < in_frames ; i++) |
| 795 | for (m = 0 ; m < psf->sf.channels ; m++) |
| 796 | buffer [m][i] = (float) (ptr [j++]) / 2147483647.0f ; |
| 797 | |
| 798 | vorbis_write_samples (psf, odata, vdata, in_frames) ; |
| 799 | |
| 800 | return lens ; |
| 801 | } /* vorbis_write_i */ |
| 802 | |
| 803 | static sf_count_t |
| 804 | vorbis_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t lens) |
| 805 | { int i, m, j = 0 ; |
| 806 | OGG_PRIVATE *odata = (OGG_PRIVATE *) psf->container_data ; |
| 807 | VORBIS_PRIVATE *vdata = (VORBIS_PRIVATE *) psf->codec_data ; |
| 808 | int in_frames = lens / psf->sf.channels ; |
| 809 | float **buffer = vorbis_analysis_buffer (&vdata->vdsp, in_frames) ; |
| 810 | for (i = 0 ; i < in_frames ; i++) |
| 811 | for (m = 0 ; m < psf->sf.channels ; m++) |
| 812 | buffer [m][i] = ptr [j++] ; |
| 813 | |
| 814 | vorbis_write_samples (psf, odata, vdata, in_frames) ; |
| 815 | |
| 816 | return lens ; |
| 817 | } /* vorbis_write_f */ |
| 818 | |
| 819 | static sf_count_t |
| 820 | vorbis_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t lens) |
| 821 | { int i, m, j = 0 ; |
| 822 | OGG_PRIVATE *odata = (OGG_PRIVATE *) psf->container_data ; |
| 823 | VORBIS_PRIVATE *vdata = (VORBIS_PRIVATE *) psf->codec_data ; |
| 824 | int in_frames = lens / psf->sf.channels ; |
| 825 | float **buffer = vorbis_analysis_buffer (&vdata->vdsp, in_frames) ; |
| 826 | for (i = 0 ; i < in_frames ; i++) |
| 827 | for (m = 0 ; m < psf->sf.channels ; m++) |
| 828 | buffer [m][i] = (float) ptr [j++] ; |
| 829 | |
| 830 | vorbis_write_samples (psf, odata, vdata, in_frames) ; |
| 831 | |
| 832 | return lens ; |
| 833 | } /* vorbis_write_d */ |
| 834 | |
| 835 | static sf_count_t |
| 836 | vorbis_seek (SF_PRIVATE *psf, int UNUSED (mode), sf_count_t offset) |
| 837 | { |
| 838 | OGG_PRIVATE *odata = (OGG_PRIVATE *) psf->container_data ; |
| 839 | VORBIS_PRIVATE *vdata = (VORBIS_PRIVATE *) psf->codec_data ; |
| 840 | |
| 841 | if (odata == NULL || vdata == NULL) |
| 842 | return 0 ; |
| 843 | |
| 844 | if (offset < 0) |
| 845 | { psf->error = SFE_BAD_SEEK ; |
| 846 | return ((sf_count_t) -1) ; |
| 847 | } ; |
| 848 | |
| 849 | if (psf->file.mode == SFM_READ) |
| 850 | { sf_count_t target = offset - vdata->loc ; |
| 851 | |
| 852 | if (target < 0) |
| 853 | { /* 12 to allow for OggS bit */ |
| 854 | psf_fseek (psf, 12, SEEK_SET) ; |
| 855 | vorbis_read_header (psf, 0) ; /* Reset state */ |
| 856 | target = offset ; |
| 857 | } ; |
| 858 | |
| 859 | while (target > 0) |
| 860 | { sf_count_t m = target > 4096 ? 4096 : target ; |
| 861 | |
| 862 | /* |
| 863 | ** Need to multiply by channels here because the seek is done in |
| 864 | ** terms of frames and the read function is done in terms of |
| 865 | ** samples. |
| 866 | */ |
| 867 | vorbis_read_sample (psf, (void *) NULL, m * psf->sf.channels, vorbis_rnull) ; |
| 868 | |
| 869 | target -= m ; |
| 870 | } ; |
| 871 | |
| 872 | return vdata->loc ; |
| 873 | } ; |
| 874 | |
| 875 | return 0 ; |
| 876 | } /* vorbis_seek */ |
| 877 | |
| 878 | /*============================================================================== |
| 879 | ** Most of the following code was snipped from Mike Smith's ogginfo utility |
| 880 | ** which is part of vorbis-tools. |
| 881 | ** Vorbis tools is released under the GPL but Mike has kindly allowed the |
| 882 | ** following to be relicensed as LGPL for libsndfile. |
| 883 | */ |
| 884 | |
| 885 | typedef struct |
| 886 | { |
| 887 | int isillegal ; |
| 888 | int shownillegal ; |
| 889 | int isnew ; |
| 890 | int end ; |
| 891 | |
| 892 | uint32_t serial ; /* must be 32 bit unsigned */ |
| 893 | ogg_stream_state ostream ; |
| 894 | |
| 895 | vorbis_info vinfo ; |
| 896 | vorbis_comment vcomment ; |
| 897 | sf_count_t lastgranulepos ; |
| 898 | int doneheaders ; |
| 899 | } stream_processor ; |
| 900 | |
| 901 | typedef struct |
| 902 | { |
| 903 | stream_processor *streams ; |
| 904 | int allocated ; |
| 905 | int used ; |
| 906 | int in_headers ; |
| 907 | } stream_set ; |
| 908 | |
| 909 | static stream_set * |
| 910 | create_stream_set (void) |
| 911 | { stream_set *set = calloc (1, sizeof (stream_set)) ; |
| 912 | |
| 913 | set->streams = calloc (5, sizeof (stream_processor)) ; |
| 914 | set->allocated = 5 ; |
| 915 | set->used = 0 ; |
| 916 | |
| 917 | return set ; |
| 918 | } /* create_stream_set */ |
| 919 | |
| 920 | static void |
| 921 | vorbis_end (stream_processor *stream, sf_count_t * len) |
| 922 | { *len += stream->lastgranulepos ; |
| 923 | vorbis_comment_clear (&stream->vcomment) ; |
| 924 | vorbis_info_clear (&stream->vinfo) ; |
| 925 | } /* vorbis_end */ |
| 926 | |
| 927 | static void |
| 928 | free_stream_set (stream_set *set, sf_count_t * len) |
| 929 | { int i ; |
| 930 | |
| 931 | for (i = 0 ; i < set->used ; i++) |
| 932 | { if (!set->streams [i].end) |
| 933 | vorbis_end (&set->streams [i], len) ; |
| 934 | ogg_stream_clear (&set->streams [i].ostream) ; |
| 935 | } ; |
| 936 | |
| 937 | free (set->streams) ; |
| 938 | free (set) ; |
| 939 | } /* free_stream_set */ |
| 940 | |
| 941 | static int |
| 942 | streams_open (stream_set *set) |
| 943 | { int i, res = 0 ; |
| 944 | |
| 945 | for (i = 0 ; i < set->used ; i++) |
| 946 | if (!set->streams [i].end) |
| 947 | res ++ ; |
| 948 | return res ; |
| 949 | } /* streams_open */ |
| 950 | |
| 951 | static stream_processor * |
| 952 | find_stream_processor (stream_set *set, ogg_page *page) |
| 953 | { uint32_t serial = ogg_page_serialno (page) ; |
| 954 | int i, invalid = 0 ; |
| 955 | |
| 956 | stream_processor *stream ; |
| 957 | |
| 958 | for (i = 0 ; i < set->used ; i++) |
| 959 | { |
| 960 | if (serial == set->streams [i].serial) |
| 961 | { /* We have a match! */ |
| 962 | stream = & (set->streams [i]) ; |
| 963 | |
| 964 | set->in_headers = 0 ; |
| 965 | /* if we have detected EOS, then this can't occur here. */ |
| 966 | if (stream->end) |
| 967 | { stream->isillegal = 1 ; |
| 968 | return stream ; |
| 969 | } |
| 970 | |
| 971 | stream->isnew = 0 ; |
| 972 | stream->end = ogg_page_eos (page) ; |
| 973 | stream->serial = serial ; |
| 974 | return stream ; |
| 975 | } ; |
| 976 | } ; |
| 977 | |
| 978 | /* If there are streams open, and we've reached the end of the |
| 979 | ** headers, then we can't be starting a new stream. |
| 980 | ** XXX: might this sometimes catch ok streams if EOS flag is missing, |
| 981 | ** but the stream is otherwise ok? |
| 982 | */ |
| 983 | if (streams_open (set) && !set->in_headers) |
| 984 | invalid = 1 ; |
| 985 | |
| 986 | set->in_headers = 1 ; |
| 987 | |
| 988 | if (set->allocated < set->used) |
| 989 | stream = &set->streams [set->used] ; |
| 990 | else |
| 991 | { set->allocated += 5 ; |
| 992 | set->streams = realloc (set->streams, sizeof (stream_processor) * set->allocated) ; |
| 993 | stream = &set->streams [set->used] ; |
| 994 | } ; |
| 995 | |
| 996 | set->used++ ; |
| 997 | |
| 998 | stream->isnew = 1 ; |
| 999 | stream->isillegal = invalid ; |
| 1000 | |
| 1001 | { |
| 1002 | int res ; |
| 1003 | ogg_packet packet ; |
| 1004 | |
| 1005 | /* We end up processing the header page twice, but that's ok. */ |
| 1006 | ogg_stream_init (&stream->ostream, serial) ; |
| 1007 | ogg_stream_pagein (&stream->ostream, page) ; |
| 1008 | res = ogg_stream_packetout (&stream->ostream, &packet) ; |
| 1009 | if (res <= 0) |
| 1010 | return NULL ; |
| 1011 | else if (packet.bytes >= 7 && memcmp (packet.packet, "\x01vorbis", 7) == 0) |
| 1012 | { |
| 1013 | stream->lastgranulepos = 0 ; |
| 1014 | vorbis_comment_init (&stream->vcomment) ; |
| 1015 | vorbis_info_init (&stream->vinfo) ; |
| 1016 | } ; |
| 1017 | |
| 1018 | res = ogg_stream_packetout (&stream->ostream, &packet) ; |
| 1019 | |
| 1020 | /* re-init, ready for processing */ |
| 1021 | ogg_stream_clear (&stream->ostream) ; |
| 1022 | ogg_stream_init (&stream->ostream, serial) ; |
| 1023 | } |
| 1024 | |
| 1025 | stream->end = ogg_page_eos (page) ; |
| 1026 | stream->serial = serial ; |
| 1027 | |
| 1028 | return stream ; |
| 1029 | } /* find_stream_processor */ |
| 1030 | |
| 1031 | static int |
| 1032 | vorbis_length_get_next_page (SF_PRIVATE *psf, ogg_sync_state * osync, ogg_page *page) |
| 1033 | { static const int CHUNK_SIZE = 4500 ; |
| 1034 | |
| 1035 | while (ogg_sync_pageout (osync, page) <= 0) |
| 1036 | { char * buffer = ogg_sync_buffer (osync, CHUNK_SIZE) ; |
| 1037 | int bytes = psf_fread (buffer, 1, 4096, psf) ; |
| 1038 | |
| 1039 | if (bytes <= 0) |
| 1040 | { ogg_sync_wrote (osync, 0) ; |
| 1041 | return 0 ; |
| 1042 | } ; |
| 1043 | |
| 1044 | ogg_sync_wrote (osync, bytes) ; |
| 1045 | } ; |
| 1046 | |
| 1047 | return 1 ; |
| 1048 | } /* vorbis_length_get_next_page */ |
| 1049 | |
| 1050 | static sf_count_t |
| 1051 | vorbis_length_aux (SF_PRIVATE * psf) |
| 1052 | { |
| 1053 | ogg_sync_state osync ; |
| 1054 | ogg_page page ; |
| 1055 | sf_count_t len = 0 ; |
| 1056 | stream_set *processors ; |
| 1057 | |
| 1058 | processors = create_stream_set () ; |
| 1059 | if (processors == NULL) |
| 1060 | return 0 ; // out of memory? |
| 1061 | |
| 1062 | ogg_sync_init (&osync) ; |
| 1063 | |
| 1064 | while (vorbis_length_get_next_page (psf, &osync, &page)) |
| 1065 | { |
| 1066 | stream_processor *p = find_stream_processor (processors, &page) ; |
| 1067 | |
| 1068 | if (!p) |
| 1069 | { len = 0 ; |
| 1070 | break ; |
| 1071 | } ; |
| 1072 | |
| 1073 | if (p->isillegal && !p->shownillegal) |
| 1074 | { |
| 1075 | p->shownillegal = 1 ; |
| 1076 | /* If it's a new stream, we want to continue processing this page |
| 1077 | ** anyway to suppress additional spurious errors |
| 1078 | */ |
| 1079 | if (!p->isnew) continue ; |
| 1080 | } ; |
| 1081 | |
| 1082 | if (!p->isillegal) |
| 1083 | { ogg_packet packet ; |
| 1084 | int header = 0 ; |
| 1085 | |
| 1086 | ogg_stream_pagein (&p->ostream, &page) ; |
| 1087 | if (p->doneheaders < 3) |
| 1088 | header = 1 ; |
| 1089 | |
| 1090 | while (ogg_stream_packetout (&p->ostream, &packet) > 0) |
| 1091 | { |
| 1092 | if (p->doneheaders < 3) |
| 1093 | { if (vorbis_synthesis_headerin (&p->vinfo, &p->vcomment, &packet) < 0) |
| 1094 | continue ; |
| 1095 | p->doneheaders ++ ; |
| 1096 | } ; |
| 1097 | } ; |
| 1098 | if (!header) |
| 1099 | { sf_count_t gp = ogg_page_granulepos (&page) ; |
| 1100 | if (gp > 0) p->lastgranulepos = gp ; |
| 1101 | } ; |
| 1102 | if (p->end) |
| 1103 | { vorbis_end (p, &len) ; |
| 1104 | p->isillegal = 1 ; |
| 1105 | } ; |
| 1106 | } ; |
| 1107 | } ; |
| 1108 | |
| 1109 | ogg_sync_clear (&osync) ; |
| 1110 | free_stream_set (processors, &len) ; |
| 1111 | |
| 1112 | return len ; |
| 1113 | } /* vorbis_length_aux */ |
| 1114 | |
| 1115 | static sf_count_t |
| 1116 | vorbis_length (SF_PRIVATE *psf) |
| 1117 | { sf_count_t length ; |
| 1118 | int error ; |
| 1119 | |
| 1120 | if (psf->sf.seekable == 0) |
| 1121 | return SF_COUNT_MAX ; |
| 1122 | |
| 1123 | psf_fseek (psf, 0, SEEK_SET) ; |
| 1124 | length = vorbis_length_aux (psf) ; |
| 1125 | |
| 1126 | psf_fseek (psf, 12, SEEK_SET) ; |
| 1127 | if ((error = vorbis_read_header (psf, 0)) != 0) |
| 1128 | psf->error = error ; |
| 1129 | |
| 1130 | return length ; |
| 1131 | } /* vorbis_length */ |
| 1132 | |
| 1133 | #else /* HAVE_EXTERNAL_LIBS */ |
| 1134 | |
| 1135 | int |
| 1136 | ogg_vorbis_open (SF_PRIVATE *psf) |
| 1137 | { |
| 1138 | psf_log_printf (psf, "This version of libsndfile was compiled without Ogg/Vorbis support.\n") ; |
| 1139 | return SFE_UNIMPLEMENTED ; |
| 1140 | } /* ogg_vorbis_open */ |
| 1141 | |
| 1142 | #endif |