src/lib/dl/ext/flac/stream_encoder_framing.c

   1 /* libFLAC - Free Lossless Audio Codec library
   2  * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * - Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *
  11  * - Redistributions in binary form must reproduce the above copyright
  12  * notice, this list of conditions and the following disclaimer in the
  13  * documentation and/or other materials provided with the distribution.
  14  *
  15  * - Neither the name of the Xiph.org Foundation nor the names of its
  16  * contributors may be used to endorse or promote products derived from
  17  * this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
  23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #if HAVE_CONFIG_H
  33 #  include "config.h"
  34 #endif
  35
  36 #include <stdio.h>
  37 #include <string.h> /* for strlen() */
  38 #include "private/stream_encoder_framing.h"
  39 #include "private/crc.h"
  40 #include "flac/assert.h"
  41
  42 #ifdef max
  43 #undef max
  44 #endif
  45 #define max(x,y) ((x)>(y)?(x):(y))
  46
  47 static FLAC__bool add_entropy_coding_method_(FLAC__BitWriter *bw, const FLAC__EntropyCodingMethod *method);
  48 static FLAC__bool add_residual_partitioned_rice_(FLAC__BitWriter *bw, const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned rice_parameters[], const unsigned raw_bits[], const unsigned partition_order, const FLAC__bool is_extended);
  49
  50 FLAC__bool FLAC__add_metadata_block(const FLAC__StreamMetadata *metadata, FLAC__BitWriter *bw)
  51 {
  52         unsigned i, j;
  53         const unsigned vendor_string_length = (unsigned)strlen(FLAC__VENDOR_STRING);
  54
  55         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->is_last, FLAC__STREAM_METADATA_IS_LAST_LEN))
  56                 return false;
  57
  58         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->type, FLAC__STREAM_METADATA_TYPE_LEN))
  59                 return false;
  60
  61         /*
  62          * First, for VORBIS_COMMENTs, adjust the length to reflect our vendor string
  63          */
  64         i = metadata->length;
  65         if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
  66                 FLAC__ASSERT(metadata->data.vorbis_comment.vendor_string.length == 0 || 0 != metadata->data.vorbis_comment.vendor_string.entry);
  67                 i -= metadata->data.vorbis_comment.vendor_string.length;
  68                 i += vendor_string_length;
  69         }
  70         FLAC__ASSERT(i < (1u << FLAC__STREAM_METADATA_LENGTH_LEN));
  71         if(!FLAC__bitwriter_write_raw_uint32(bw, i, FLAC__STREAM_METADATA_LENGTH_LEN))
  72                 return false;
  73
  74         switch(metadata->type) {
  75                 case FLAC__METADATA_TYPE_STREAMINFO:
  76                         FLAC__ASSERT(metadata->data.stream_info.min_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN));
  77                         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.min_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN))
  78                                 return false;
  79                         FLAC__ASSERT(metadata->data.stream_info.max_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN));
  80                         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.max_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN))
  81                                 return false;
  82                         FLAC__ASSERT(metadata->data.stream_info.min_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN));
  83                         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.min_framesize, FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN))
  84                                 return false;
  85                         FLAC__ASSERT(metadata->data.stream_info.max_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN));
  86                         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.max_framesize, FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN))
  87                                 return false;
  88                         FLAC__ASSERT(FLAC__format_sample_rate_is_valid(metadata->data.stream_info.sample_rate));
  89                         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.sample_rate, FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN))
  90                                 return false;
  91                         FLAC__ASSERT(metadata->data.stream_info.channels > 0);
  92                         FLAC__ASSERT(metadata->data.stream_info.channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN));
  93                         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.channels-1, FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN))
  94                                 return false;
  95                         FLAC__ASSERT(metadata->data.stream_info.bits_per_sample > 0);
  96                         FLAC__ASSERT(metadata->data.stream_info.bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN));
  97                         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.bits_per_sample-1, FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN))
  98                                 return false;
  99                         if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.stream_info.total_samples, FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN))
 100                                 return false;
 101                         if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.stream_info.md5sum, 16))
 102                                 return false;
 103                         break;
 104                 case FLAC__METADATA_TYPE_PADDING:
 105                         if(!FLAC__bitwriter_write_zeroes(bw, metadata->length * 8))
 106                                 return false;
 107                         break;
 108                 case FLAC__METADATA_TYPE_APPLICATION:
 109                         if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8))
 110                                 return false;
 111                         if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.application.data, metadata->length - (FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)))
 112                                 return false;
 113                         break;
 114                 case FLAC__METADATA_TYPE_SEEKTABLE:
 115                         for(i = 0; i < metadata->data.seek_table.num_points; i++) {
 116                                 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.seek_table.points[i].sample_number, FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN))
 117                                         return false;
 118                                 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.seek_table.points[i].stream_offset, FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN))
 119                                         return false;
 120                                 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.seek_table.points[i].frame_samples, FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN))
 121                                         return false;
 122                         }
 123                         break;
 124                 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
 125                         if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, vendor_string_length))
 126                                 return false;
 127                         if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)FLAC__VENDOR_STRING, vendor_string_length))
 128                                 return false;
 129                         if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, metadata->data.vorbis_comment.num_comments))
 130                                 return false;
 131                         for(i = 0; i < metadata->data.vorbis_comment.num_comments; i++) {
 132                                 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, metadata->data.vorbis_comment.comments[i].length))
 133                                         return false;
 134                                 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.vorbis_comment.comments[i].entry, metadata->data.vorbis_comment.comments[i].length))
 135                                         return false;
 136                         }
 137                         break;
 138                 case FLAC__METADATA_TYPE_CUESHEET:
 139                         FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0);
 140                         if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)metadata->data.cue_sheet.media_catalog_number, FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN/8))
 141                                 return false;
 142                         if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.cue_sheet.lead_in, FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN))
 143                                 return false;
 144                         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.cue_sheet.is_cd? 1 : 0, FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN))
 145                                 return false;
 146                         if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN))
 147                                 return false;
 148                         if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.cue_sheet.num_tracks, FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN))
 149                                 return false;
 150                         for(i = 0; i < metadata->data.cue_sheet.num_tracks; i++) {
 151                                 const FLAC__StreamMetadata_CueSheet_Track *track = metadata->data.cue_sheet.tracks + i;
 152
 153                                 if(!FLAC__bitwriter_write_raw_uint64(bw, track->offset, FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN))
 154                                         return false;
 155                                 if(!FLAC__bitwriter_write_raw_uint32(bw, track->number, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN))
 156                                         return false;
 157                                 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0);
 158                                 if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)track->isrc, FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN/8))
 159                                         return false;
 160                                 if(!FLAC__bitwriter_write_raw_uint32(bw, track->type, FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN))
 161                                         return false;
 162                                 if(!FLAC__bitwriter_write_raw_uint32(bw, track->pre_emphasis, FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN))
 163                                         return false;
 164                                 if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN))
 165                                         return false;
 166                                 if(!FLAC__bitwriter_write_raw_uint32(bw, track->num_indices, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN))
 167                                         return false;
 168                                 for(j = 0; j < track->num_indices; j++) {
 169                                         const FLAC__StreamMetadata_CueSheet_Index *index = track->indices + j;
 170
 171                                         if(!FLAC__bitwriter_write_raw_uint64(bw, index->offset, FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN))
 172                                                 return false;
 173                                         if(!FLAC__bitwriter_write_raw_uint32(bw, index->number, FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN))
 174                                                 return false;
 175                                         if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN))
 176                                                 return false;
 177                                 }
 178                         }
 179                         break;
 180                 case FLAC__METADATA_TYPE_PICTURE:
 181                         {
 182                                 size_t len;
 183                                 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.type, FLAC__STREAM_METADATA_PICTURE_TYPE_LEN))
 184                                         return false;
 185                                 len = strlen(metadata->data.picture.mime_type);
 186                                 if(!FLAC__bitwriter_write_raw_uint32(bw, len, FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN))
 187                                         return false;
 188                                 if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)metadata->data.picture.mime_type, len))
 189                                         return false;
 190                                 len = strlen((const char *)metadata->data.picture.description);
 191                                 if(!FLAC__bitwriter_write_raw_uint32(bw, len, FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN))
 192                                         return false;
 193                                 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.picture.description, len))
 194                                         return false;
 195                                 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.width, FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN))
 196                                         return false;
 197                                 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.height, FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN))
 198                                         return false;
 199                                 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.depth, FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN))
 200                                         return false;
 201                                 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.colors, FLAC__STREAM_METADATA_PICTURE_COLORS_LEN))
 202                                         return false;
 203                                 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.data_length, FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN))
 204                                         return false;
 205                                 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.picture.data, metadata->data.picture.data_length))
 206                                         return false;
 207                         }
 208                         break;
 209                 default:
 210                         if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.unknown.data, metadata->length))
 211                                 return false;
 212                         break;
 213         }
 214
 215         FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw));
 216         return true;
 217 }
 218
 219 FLAC__bool FLAC__frame_add_header(const FLAC__FrameHeader *header, FLAC__BitWriter *bw)
 220 {
 221         unsigned u, blocksize_hint, sample_rate_hint;
 222         FLAC__byte crc;
 223
 224         FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw));
 225
 226         if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__FRAME_HEADER_SYNC, FLAC__FRAME_HEADER_SYNC_LEN))
 227                 return false;
 228
 229         if(!FLAC__bitwriter_write_raw_uint32(bw, 0, FLAC__FRAME_HEADER_RESERVED_LEN))
 230                 return false;
 231
 232         if(!FLAC__bitwriter_write_raw_uint32(bw, (header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER)? 0 : 1, FLAC__FRAME_HEADER_BLOCKING_STRATEGY_LEN))
 233                 return false;
 234
 235         FLAC__ASSERT(header->blocksize > 0 && header->blocksize <= FLAC__MAX_BLOCK_SIZE);
 236         /* when this assertion holds true, any legal blocksize can be expressed in the frame header */
 237         FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535u);
 238         blocksize_hint = 0;
 239         switch(header->blocksize) {
 240                 case   192: u = 1; break;
 241                 case   576: u = 2; break;
 242                 case  1152: u = 3; break;
 243                 case  2304: u = 4; break;
 244                 case  4608: u = 5; break;
 245                 case   256: u = 8; break;
 246                 case   512: u = 9; break;
 247                 case  1024: u = 10; break;
 248                 case  2048: u = 11; break;
 249                 case  4096: u = 12; break;
 250                 case  8192: u = 13; break;
 251                 case 16384: u = 14; break;
 252                 case 32768: u = 15; break;
 253                 default:
 254                         if(header->blocksize <= 0x100)
 255                                 blocksize_hint = u = 6;
 256                         else
 257                                 blocksize_hint = u = 7;
 258                         break;
 259         }
 260         if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_BLOCK_SIZE_LEN))
 261                 return false;
 262
 263         FLAC__ASSERT(FLAC__format_sample_rate_is_valid(header->sample_rate));
 264         sample_rate_hint = 0;
 265         switch(header->sample_rate) {
 266                 case  88200: u = 1; break;
 267                 case 176400: u = 2; break;
 268                 case 192000: u = 3; break;
 269                 case   8000: u = 4; break;
 270                 case  16000: u = 5; break;
 271                 case  22050: u = 6; break;
 272                 case  24000: u = 7; break;
 273                 case  32000: u = 8; break;
 274                 case  44100: u = 9; break;
 275                 case  48000: u = 10; break;
 276                 case  96000: u = 11; break;
 277                 default:
 278                         if(header->sample_rate <= 255000 && header->sample_rate % 1000 == 0)
 279                                 sample_rate_hint = u = 12;
 280                         else if(header->sample_rate % 10 == 0)
 281                                 sample_rate_hint = u = 14;
 282                         else if(header->sample_rate <= 0xffff)
 283                                 sample_rate_hint = u = 13;
 284                         else
 285                                 u = 0;
 286                         break;
 287         }
 288         if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_SAMPLE_RATE_LEN))
 289                 return false;
 290
 291         FLAC__ASSERT(header->channels > 0 && header->channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN) && header->channels <= FLAC__MAX_CHANNELS);
 292         switch(header->channel_assignment) {
 293                 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
 294                         u = header->channels - 1;
 295                         break;
 296                 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
 297                         FLAC__ASSERT(header->channels == 2);
 298                         u = 8;
 299                         break;
 300                 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
 301                         FLAC__ASSERT(header->channels == 2);
 302                         u = 9;
 303                         break;
 304                 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
 305                         FLAC__ASSERT(header->channels == 2);
 306                         u = 10;
 307                         break;
 308                 default:
 309                         FLAC__ASSERT(0);
 310         }
 311         if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_CHANNEL_ASSIGNMENT_LEN))
 312                 return false;
 313
 314         FLAC__ASSERT(header->bits_per_sample > 0 && header->bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN));
 315         switch(header->bits_per_sample) {
 316                 case 8 : u = 1; break;
 317                 case 12: u = 2; break;
 318                 case 16: u = 4; break;
 319                 case 20: u = 5; break;
 320                 case 24: u = 6; break;
 321                 default: u = 0; break;
 322         }
 323         if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_BITS_PER_SAMPLE_LEN))
 324                 return false;
 325
 326         if(!FLAC__bitwriter_write_raw_uint32(bw, 0, FLAC__FRAME_HEADER_ZERO_PAD_LEN))
 327                 return false;
 328
 329         if(header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER) {
 330                 if(!FLAC__bitwriter_write_utf8_uint32(bw, header->number.frame_number))
 331                         return false;
 332         }
 333         else {
 334                 if(!FLAC__bitwriter_write_utf8_uint64(bw, header->number.sample_number))
 335                         return false;
 336         }
 337
 338         if(blocksize_hint)
 339                 if(!FLAC__bitwriter_write_raw_uint32(bw, header->blocksize-1, (blocksize_hint==6)? 8:16))
 340                         return false;
 341
 342         switch(sample_rate_hint) {
 343                 case 12:
 344                         if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate / 1000, 8))
 345                                 return false;
 346                         break;
 347                 case 13:
 348                         if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate, 16))
 349                                 return false;
 350                         break;
 351                 case 14:
 352                         if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate / 10, 16))
 353                                 return false;
 354                         break;
 355         }
 356
 357         /* write the CRC */
 358         if(!FLAC__bitwriter_get_write_crc8(bw, &crc))
 359                 return false;
 360         if(!FLAC__bitwriter_write_raw_uint32(bw, crc, FLAC__FRAME_HEADER_CRC_LEN))
 361                 return false;
 362
 363         return true;
 364 }
 365
 366 FLAC__bool FLAC__subframe_add_constant(const FLAC__Subframe_Constant *subframe, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw)
 367 {
 368         FLAC__bool ok;
 369
 370         ok =
 371                 FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_CONSTANT_BYTE_ALIGNED_MASK | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN) &&
 372                 (wasted_bits? FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1) : true) &&
 373                 FLAC__bitwriter_write_raw_int32(bw, subframe->value, subframe_bps)
 374         ;
 375
 376         return ok;
 377 }
 378
 379 FLAC__bool FLAC__subframe_add_fixed(const FLAC__Subframe_Fixed *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw)
 380 {
 381         unsigned i;
 382
 383         if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_FIXED_BYTE_ALIGNED_MASK | (subframe->order<<1) | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN))
 384                 return false;
 385         if(wasted_bits)
 386                 if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1))
 387                         return false;
 388
 389         for(i = 0; i < subframe->order; i++)
 390                 if(!FLAC__bitwriter_write_raw_int32(bw, subframe->warmup[i], subframe_bps))
 391                         return false;
 392
 393         if(!add_entropy_coding_method_(bw, &subframe->entropy_coding_method))
 394                 return false;
 395         switch(subframe->entropy_coding_method.type) {
 396                 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
 397                 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
 398                         if(!add_residual_partitioned_rice_(
 399                                 bw,
 400                                 subframe->residual,
 401                                 residual_samples,
 402                                 subframe->order,
 403                                 subframe->entropy_coding_method.data.partitioned_rice.contents->parameters,
 404                                 subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits,
 405                                 subframe->entropy_coding_method.data.partitioned_rice.order,
 406                                 /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
 407                         ))
 408                                 return false;
 409                         break;
 410                 default:
 411                         FLAC__ASSERT(0);
 412         }
 413
 414         return true;
 415 }
 416
 417 FLAC__bool FLAC__subframe_add_lpc(const FLAC__Subframe_LPC *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw)
 418 {
 419         unsigned i;
 420
 421         if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_LPC_BYTE_ALIGNED_MASK | ((subframe->order-1)<<1) | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN))
 422                 return false;
 423         if(wasted_bits)
 424                 if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1))
 425                         return false;
 426
 427         for(i = 0; i < subframe->order; i++)
 428                 if(!FLAC__bitwriter_write_raw_int32(bw, subframe->warmup[i], subframe_bps))
 429                         return false;
 430
 431         if(!FLAC__bitwriter_write_raw_uint32(bw, subframe->qlp_coeff_precision-1, FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN))
 432                 return false;
 433         if(!FLAC__bitwriter_write_raw_int32(bw, subframe->quantization_level, FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN))
 434                 return false;
 435         for(i = 0; i < subframe->order; i++)
 436                 if(!FLAC__bitwriter_write_raw_int32(bw, subframe->qlp_coeff[i], subframe->qlp_coeff_precision))
 437                         return false;
 438
 439         if(!add_entropy_coding_method_(bw, &subframe->entropy_coding_method))
 440                 return false;
 441         switch(subframe->entropy_coding_method.type) {
 442                 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
 443                 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
 444                         if(!add_residual_partitioned_rice_(
 445                                 bw,
 446                                 subframe->residual,
 447                                 residual_samples,
 448                                 subframe->order,
 449                                 subframe->entropy_coding_method.data.partitioned_rice.contents->parameters,
 450                                 subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits,
 451                                 subframe->entropy_coding_method.data.partitioned_rice.order,
 452                                 /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
 453                         ))
 454                                 return false;
 455                         break;
 456                 default:
 457                         FLAC__ASSERT(0);
 458         }
 459
 460         return true;
 461 }
 462
 463 FLAC__bool FLAC__subframe_add_verbatim(const FLAC__Subframe_Verbatim *subframe, unsigned samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw)
 464 {
 465         unsigned i;
 466         const FLAC__int32 *signal = subframe->data;
 467
 468         if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_VERBATIM_BYTE_ALIGNED_MASK | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN))
 469                 return false;
 470         if(wasted_bits)
 471                 if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1))
 472                         return false;
 473
 474         for(i = 0; i < samples; i++)
 475                 if(!FLAC__bitwriter_write_raw_int32(bw, signal[i], subframe_bps))
 476                         return false;
 477
 478         return true;
 479 }
 480
 481 FLAC__bool add_entropy_coding_method_(FLAC__BitWriter *bw, const FLAC__EntropyCodingMethod *method)
 482 {
 483         if(!FLAC__bitwriter_write_raw_uint32(bw, method->type, FLAC__ENTROPY_CODING_METHOD_TYPE_LEN))
 484                 return false;
 485         switch(method->type) {
 486                 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
 487                 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
 488                         if(!FLAC__bitwriter_write_raw_uint32(bw, method->data.partitioned_rice.order, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
 489                                 return false;
 490                         break;
 491                 default:
 492                         FLAC__ASSERT(0);
 493         }
 494         return true;
 495 }
 496
 497 FLAC__bool add_residual_partitioned_rice_(FLAC__BitWriter *bw, const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned rice_parameters[], const unsigned raw_bits[], const unsigned partition_order, const FLAC__bool is_extended)
 498 {
 499         const unsigned plen = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
 500         const unsigned pesc = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
 501
 502         if(partition_order == 0) {
 503                 unsigned i;
 504
 505                 if(raw_bits[0] == 0) {
 506                         if(!FLAC__bitwriter_write_raw_uint32(bw, rice_parameters[0], plen))
 507                                 return false;
 508                         if(!FLAC__bitwriter_write_rice_signed_block(bw, residual, residual_samples, rice_parameters[0]))
 509                                 return false;
 510                 }
 511                 else {
 512                         FLAC__ASSERT(rice_parameters[0] == 0);
 513                         if(!FLAC__bitwriter_write_raw_uint32(bw, pesc, plen))
 514                                 return false;
 515                         if(!FLAC__bitwriter_write_raw_uint32(bw, raw_bits[0], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
 516                                 return false;
 517                         for(i = 0; i < residual_samples; i++) {
 518                                 if(!FLAC__bitwriter_write_raw_int32(bw, residual[i], raw_bits[0]))
 519                                         return false;
 520                         }
 521                 }
 522                 return true;
 523         }
 524         else {
 525                 unsigned i, j, k = 0, k_last = 0;
 526                 unsigned partition_samples;
 527                 const unsigned default_partition_samples = (residual_samples+predictor_order) >> partition_order;
 528                 for(i = 0; i < (1u<<partition_order); i++) {
 529                         partition_samples = default_partition_samples;
 530                         if(i == 0)
 531                                 partition_samples -= predictor_order;
 532                         k += partition_samples;
 533                         if(raw_bits[i] == 0) {
 534                                 if(!FLAC__bitwriter_write_raw_uint32(bw, rice_parameters[i], plen))
 535                                         return false;
 536                                 if(!FLAC__bitwriter_write_rice_signed_block(bw, residual+k_last, k-k_last, rice_parameters[i]))
 537                                         return false;
 538                         }
 539                         else {
 540                                 if(!FLAC__bitwriter_write_raw_uint32(bw, pesc, plen))
 541                                         return false;
 542                                 if(!FLAC__bitwriter_write_raw_uint32(bw, raw_bits[i], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
 543                                         return false;
 544                                 for(j = k_last; j < k; j++) {
 545                                         if(!FLAC__bitwriter_write_raw_int32(bw, residual[j], raw_bits[i]))
 546                                                 return false;
 547                                 }
 548                         }
 549                         k_last = k;
 550                 }
 551                 return true;
 552         }
 553 }