1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000-2009 Josh Coalson
3 * Copyright (C) 2011-2016 Xiph.Org Foundation
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * - Neither the name of the Xiph.org Foundation nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 #include <string.h> /* for strlen() */
39 #include "private/stream_encoder_framing.h"
40 #include "private/crc.h"
41 #include "FLAC/assert.h"
42 #include "share/compat.h"
44 static FLAC__bool
add_entropy_coding_method_(FLAC__BitWriter
*bw
, const FLAC__EntropyCodingMethod
*method
);
45 static FLAC__bool
add_residual_partitioned_rice_(FLAC__BitWriter
*bw
, const FLAC__int32 residual
[], const uint32_t residual_samples
, const uint32_t predictor_order
, const uint32_t rice_parameters
[], const uint32_t raw_bits
[], const uint32_t partition_order
, const FLAC__bool is_extended
);
47 FLAC__bool
FLAC__add_metadata_block(const FLAC__StreamMetadata
*metadata
, FLAC__BitWriter
*bw
)
50 const uint32_t vendor_string_length
= (uint32_t)strlen(FLAC__VENDOR_STRING
);
52 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->is_last
, FLAC__STREAM_METADATA_IS_LAST_LEN
))
55 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->type
, FLAC__STREAM_METADATA_TYPE_LEN
))
59 * First, for VORBIS_COMMENTs, adjust the length to reflect our vendor string
62 if(metadata
->type
== FLAC__METADATA_TYPE_VORBIS_COMMENT
) {
63 FLAC__ASSERT(metadata
->data
.vorbis_comment
.vendor_string
.length
== 0 || 0 != metadata
->data
.vorbis_comment
.vendor_string
.entry
);
64 i
-= metadata
->data
.vorbis_comment
.vendor_string
.length
;
65 i
+= vendor_string_length
;
67 FLAC__ASSERT(i
< (1u << FLAC__STREAM_METADATA_LENGTH_LEN
));
68 /* double protection */
69 if(i
>= (1u << FLAC__STREAM_METADATA_LENGTH_LEN
))
71 if(!FLAC__bitwriter_write_raw_uint32(bw
, i
, FLAC__STREAM_METADATA_LENGTH_LEN
))
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
))
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
))
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
))
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
))
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
))
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
))
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
))
99 FLAC__ASSERT(metadata
->data
.stream_info
.total_samples
< (FLAC__U64L(1) << FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
));
100 if(!FLAC__bitwriter_write_raw_uint64(bw
, metadata
->data
.stream_info
.total_samples
, FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
))
102 if(!FLAC__bitwriter_write_byte_block(bw
, metadata
->data
.stream_info
.md5sum
, 16))
105 case FLAC__METADATA_TYPE_PADDING
:
106 if(!FLAC__bitwriter_write_zeroes(bw
, metadata
->length
* 8))
109 case FLAC__METADATA_TYPE_APPLICATION
:
110 if(!FLAC__bitwriter_write_byte_block(bw
, metadata
->data
.application
.id
, FLAC__STREAM_METADATA_APPLICATION_ID_LEN
/ 8))
112 if(!FLAC__bitwriter_write_byte_block(bw
, metadata
->data
.application
.data
, metadata
->length
- (FLAC__STREAM_METADATA_APPLICATION_ID_LEN
/ 8)))
115 case FLAC__METADATA_TYPE_SEEKTABLE
:
116 for(i
= 0; i
< metadata
->data
.seek_table
.num_points
; i
++) {
117 if(!FLAC__bitwriter_write_raw_uint64(bw
, metadata
->data
.seek_table
.points
[i
].sample_number
, FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN
))
119 if(!FLAC__bitwriter_write_raw_uint64(bw
, metadata
->data
.seek_table
.points
[i
].stream_offset
, FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN
))
121 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->data
.seek_table
.points
[i
].frame_samples
, FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN
))
125 case FLAC__METADATA_TYPE_VORBIS_COMMENT
:
126 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw
, vendor_string_length
))
128 if(!FLAC__bitwriter_write_byte_block(bw
, (const FLAC__byte
*)FLAC__VENDOR_STRING
, vendor_string_length
))
130 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw
, metadata
->data
.vorbis_comment
.num_comments
))
132 for(i
= 0; i
< metadata
->data
.vorbis_comment
.num_comments
; i
++) {
133 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw
, metadata
->data
.vorbis_comment
.comments
[i
].length
))
135 if(!FLAC__bitwriter_write_byte_block(bw
, metadata
->data
.vorbis_comment
.comments
[i
].entry
, metadata
->data
.vorbis_comment
.comments
[i
].length
))
139 case FLAC__METADATA_TYPE_CUESHEET
:
140 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN
% 8 == 0);
141 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))
143 if(!FLAC__bitwriter_write_raw_uint64(bw
, metadata
->data
.cue_sheet
.lead_in
, FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN
))
145 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->data
.cue_sheet
.is_cd
? 1 : 0, FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN
))
147 if(!FLAC__bitwriter_write_zeroes(bw
, FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN
))
149 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->data
.cue_sheet
.num_tracks
, FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN
))
151 for(i
= 0; i
< metadata
->data
.cue_sheet
.num_tracks
; i
++) {
152 const FLAC__StreamMetadata_CueSheet_Track
*track
= metadata
->data
.cue_sheet
.tracks
+ i
;
154 if(!FLAC__bitwriter_write_raw_uint64(bw
, track
->offset
, FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN
))
156 if(!FLAC__bitwriter_write_raw_uint32(bw
, track
->number
, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN
))
158 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN
% 8 == 0);
159 if(!FLAC__bitwriter_write_byte_block(bw
, (const FLAC__byte
*)track
->isrc
, FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN
/8))
161 if(!FLAC__bitwriter_write_raw_uint32(bw
, track
->type
, FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN
))
163 if(!FLAC__bitwriter_write_raw_uint32(bw
, track
->pre_emphasis
, FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN
))
165 if(!FLAC__bitwriter_write_zeroes(bw
, FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN
))
167 if(!FLAC__bitwriter_write_raw_uint32(bw
, track
->num_indices
, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN
))
169 for(j
= 0; j
< track
->num_indices
; j
++) {
170 const FLAC__StreamMetadata_CueSheet_Index
*indx
= track
->indices
+ j
;
172 if(!FLAC__bitwriter_write_raw_uint64(bw
, indx
->offset
, FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN
))
174 if(!FLAC__bitwriter_write_raw_uint32(bw
, indx
->number
, FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN
))
176 if(!FLAC__bitwriter_write_zeroes(bw
, FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN
))
181 case FLAC__METADATA_TYPE_PICTURE
:
184 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->data
.picture
.type
, FLAC__STREAM_METADATA_PICTURE_TYPE_LEN
))
186 len
= strlen(metadata
->data
.picture
.mime_type
);
187 if(!FLAC__bitwriter_write_raw_uint32(bw
, len
, FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN
))
189 if(!FLAC__bitwriter_write_byte_block(bw
, (const FLAC__byte
*)metadata
->data
.picture
.mime_type
, len
))
191 len
= strlen((const char *)metadata
->data
.picture
.description
);
192 if(!FLAC__bitwriter_write_raw_uint32(bw
, len
, FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN
))
194 if(!FLAC__bitwriter_write_byte_block(bw
, metadata
->data
.picture
.description
, len
))
196 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->data
.picture
.width
, FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN
))
198 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->data
.picture
.height
, FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN
))
200 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->data
.picture
.depth
, FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN
))
202 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->data
.picture
.colors
, FLAC__STREAM_METADATA_PICTURE_COLORS_LEN
))
204 if(!FLAC__bitwriter_write_raw_uint32(bw
, metadata
->data
.picture
.data_length
, FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN
))
206 if(!FLAC__bitwriter_write_byte_block(bw
, metadata
->data
.picture
.data
, metadata
->data
.picture
.data_length
))
211 if(!FLAC__bitwriter_write_byte_block(bw
, metadata
->data
.unknown
.data
, metadata
->length
))
216 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw
));
220 FLAC__bool
FLAC__frame_add_header(const FLAC__FrameHeader
*header
, FLAC__BitWriter
*bw
)
222 uint32_t u
, blocksize_hint
, sample_rate_hint
;
225 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw
));
227 if(!FLAC__bitwriter_write_raw_uint32(bw
, FLAC__FRAME_HEADER_SYNC
, FLAC__FRAME_HEADER_SYNC_LEN
))
230 if(!FLAC__bitwriter_write_raw_uint32(bw
, 0, FLAC__FRAME_HEADER_RESERVED_LEN
))
233 if(!FLAC__bitwriter_write_raw_uint32(bw
, (header
->number_type
== FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER
)? 0 : 1, FLAC__FRAME_HEADER_BLOCKING_STRATEGY_LEN
))
236 FLAC__ASSERT(header
->blocksize
> 0 && header
->blocksize
<= FLAC__MAX_BLOCK_SIZE
);
237 /* when this assertion holds true, any legal blocksize can be expressed in the frame header */
238 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE
<= 65535u);
240 switch(header
->blocksize
) {
241 case 192: u
= 1; break;
242 case 576: u
= 2; break;
243 case 1152: u
= 3; break;
244 case 2304: u
= 4; break;
245 case 4608: u
= 5; break;
246 case 256: u
= 8; break;
247 case 512: u
= 9; break;
248 case 1024: u
= 10; break;
249 case 2048: u
= 11; break;
250 case 4096: u
= 12; break;
251 case 8192: u
= 13; break;
252 case 16384: u
= 14; break;
253 case 32768: u
= 15; break;
255 if(header
->blocksize
<= 0x100)
256 blocksize_hint
= u
= 6;
258 blocksize_hint
= u
= 7;
261 if(!FLAC__bitwriter_write_raw_uint32(bw
, u
, FLAC__FRAME_HEADER_BLOCK_SIZE_LEN
))
264 FLAC__ASSERT(FLAC__format_sample_rate_is_valid(header
->sample_rate
));
265 sample_rate_hint
= 0;
266 switch(header
->sample_rate
) {
267 case 88200: u
= 1; break;
268 case 176400: u
= 2; break;
269 case 192000: u
= 3; break;
270 case 8000: u
= 4; break;
271 case 16000: u
= 5; break;
272 case 22050: u
= 6; break;
273 case 24000: u
= 7; break;
274 case 32000: u
= 8; break;
275 case 44100: u
= 9; break;
276 case 48000: u
= 10; break;
277 case 96000: u
= 11; break;
279 if(header
->sample_rate
<= 255000 && header
->sample_rate
% 1000 == 0)
280 sample_rate_hint
= u
= 12;
281 else if(header
->sample_rate
% 10 == 0)
282 sample_rate_hint
= u
= 14;
283 else if(header
->sample_rate
<= 0xffff)
284 sample_rate_hint
= u
= 13;
289 if(!FLAC__bitwriter_write_raw_uint32(bw
, u
, FLAC__FRAME_HEADER_SAMPLE_RATE_LEN
))
292 FLAC__ASSERT(header
->channels
> 0 && header
->channels
<= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN
) && header
->channels
<= FLAC__MAX_CHANNELS
);
293 switch(header
->channel_assignment
) {
294 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT
:
295 u
= header
->channels
- 1;
297 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE
:
298 FLAC__ASSERT(header
->channels
== 2);
301 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE
:
302 FLAC__ASSERT(header
->channels
== 2);
305 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE
:
306 FLAC__ASSERT(header
->channels
== 2);
312 if(!FLAC__bitwriter_write_raw_uint32(bw
, u
, FLAC__FRAME_HEADER_CHANNEL_ASSIGNMENT_LEN
))
315 FLAC__ASSERT(header
->bits_per_sample
> 0 && header
->bits_per_sample
<= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
));
316 switch(header
->bits_per_sample
) {
317 case 8 : u
= 1; break;
318 case 12: u
= 2; break;
319 case 16: u
= 4; break;
320 case 20: u
= 5; break;
321 case 24: u
= 6; break;
322 default: u
= 0; break;
324 if(!FLAC__bitwriter_write_raw_uint32(bw
, u
, FLAC__FRAME_HEADER_BITS_PER_SAMPLE_LEN
))
327 if(!FLAC__bitwriter_write_raw_uint32(bw
, 0, FLAC__FRAME_HEADER_ZERO_PAD_LEN
))
330 if(header
->number_type
== FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER
) {
331 if(!FLAC__bitwriter_write_utf8_uint32(bw
, header
->number
.frame_number
))
335 if(!FLAC__bitwriter_write_utf8_uint64(bw
, header
->number
.sample_number
))
340 if(!FLAC__bitwriter_write_raw_uint32(bw
, header
->blocksize
-1, (blocksize_hint
==6)? 8:16))
343 switch(sample_rate_hint
) {
345 if(!FLAC__bitwriter_write_raw_uint32(bw
, header
->sample_rate
/ 1000, 8))
349 if(!FLAC__bitwriter_write_raw_uint32(bw
, header
->sample_rate
, 16))
353 if(!FLAC__bitwriter_write_raw_uint32(bw
, header
->sample_rate
/ 10, 16))
359 if(!FLAC__bitwriter_get_write_crc8(bw
, &crc
))
361 if(!FLAC__bitwriter_write_raw_uint32(bw
, crc
, FLAC__FRAME_HEADER_CRC_LEN
))
367 FLAC__bool
FLAC__subframe_add_constant(const FLAC__Subframe_Constant
*subframe
, uint32_t subframe_bps
, uint32_t wasted_bits
, FLAC__BitWriter
*bw
)
372 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
) &&
373 (wasted_bits
? FLAC__bitwriter_write_unary_unsigned(bw
, wasted_bits
-1) : true) &&
374 FLAC__bitwriter_write_raw_int32(bw
, subframe
->value
, subframe_bps
)
380 FLAC__bool
FLAC__subframe_add_fixed(const FLAC__Subframe_Fixed
*subframe
, uint32_t residual_samples
, uint32_t subframe_bps
, uint32_t wasted_bits
, FLAC__BitWriter
*bw
)
384 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
))
387 if(!FLAC__bitwriter_write_unary_unsigned(bw
, wasted_bits
-1))
390 for(i
= 0; i
< subframe
->order
; i
++)
391 if(!FLAC__bitwriter_write_raw_int32(bw
, subframe
->warmup
[i
], subframe_bps
))
394 if(!add_entropy_coding_method_(bw
, &subframe
->entropy_coding_method
))
396 switch(subframe
->entropy_coding_method
.type
) {
397 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE
:
398 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
:
399 if(!add_residual_partitioned_rice_(
404 subframe
->entropy_coding_method
.data
.partitioned_rice
.contents
->parameters
,
405 subframe
->entropy_coding_method
.data
.partitioned_rice
.contents
->raw_bits
,
406 subframe
->entropy_coding_method
.data
.partitioned_rice
.order
,
407 /*is_extended=*/subframe
->entropy_coding_method
.type
== FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
418 FLAC__bool
FLAC__subframe_add_lpc(const FLAC__Subframe_LPC
*subframe
, uint32_t residual_samples
, uint32_t subframe_bps
, uint32_t wasted_bits
, FLAC__BitWriter
*bw
)
422 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
))
425 if(!FLAC__bitwriter_write_unary_unsigned(bw
, wasted_bits
-1))
428 for(i
= 0; i
< subframe
->order
; i
++)
429 if(!FLAC__bitwriter_write_raw_int32(bw
, subframe
->warmup
[i
], subframe_bps
))
432 if(!FLAC__bitwriter_write_raw_uint32(bw
, subframe
->qlp_coeff_precision
-1, FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN
))
434 if(!FLAC__bitwriter_write_raw_int32(bw
, subframe
->quantization_level
, FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN
))
436 for(i
= 0; i
< subframe
->order
; i
++)
437 if(!FLAC__bitwriter_write_raw_int32(bw
, subframe
->qlp_coeff
[i
], subframe
->qlp_coeff_precision
))
440 if(!add_entropy_coding_method_(bw
, &subframe
->entropy_coding_method
))
442 switch(subframe
->entropy_coding_method
.type
) {
443 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE
:
444 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
:
445 if(!add_residual_partitioned_rice_(
450 subframe
->entropy_coding_method
.data
.partitioned_rice
.contents
->parameters
,
451 subframe
->entropy_coding_method
.data
.partitioned_rice
.contents
->raw_bits
,
452 subframe
->entropy_coding_method
.data
.partitioned_rice
.order
,
453 /*is_extended=*/subframe
->entropy_coding_method
.type
== FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
464 FLAC__bool
FLAC__subframe_add_verbatim(const FLAC__Subframe_Verbatim
*subframe
, uint32_t samples
, uint32_t subframe_bps
, uint32_t wasted_bits
, FLAC__BitWriter
*bw
)
467 const FLAC__int32
*signal
= subframe
->data
;
469 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
))
472 if(!FLAC__bitwriter_write_unary_unsigned(bw
, wasted_bits
-1))
475 for(i
= 0; i
< samples
; i
++)
476 if(!FLAC__bitwriter_write_raw_int32(bw
, signal
[i
], subframe_bps
))
482 FLAC__bool
add_entropy_coding_method_(FLAC__BitWriter
*bw
, const FLAC__EntropyCodingMethod
*method
)
484 if(!FLAC__bitwriter_write_raw_uint32(bw
, method
->type
, FLAC__ENTROPY_CODING_METHOD_TYPE_LEN
))
486 switch(method
->type
) {
487 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE
:
488 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
:
489 if(!FLAC__bitwriter_write_raw_uint32(bw
, method
->data
.partitioned_rice
.order
, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN
))
498 FLAC__bool
add_residual_partitioned_rice_(FLAC__BitWriter
*bw
, const FLAC__int32 residual
[], const uint32_t residual_samples
, const uint32_t predictor_order
, const uint32_t rice_parameters
[], const uint32_t raw_bits
[], const uint32_t partition_order
, const FLAC__bool is_extended
)
500 const uint32_t plen
= is_extended
? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN
: FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN
;
501 const uint32_t pesc
= is_extended
? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER
: FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER
;
503 if(partition_order
== 0) {
506 if(raw_bits
[0] == 0) {
507 if(!FLAC__bitwriter_write_raw_uint32(bw
, rice_parameters
[0], plen
))
509 if(!FLAC__bitwriter_write_rice_signed_block(bw
, residual
, residual_samples
, rice_parameters
[0]))
513 FLAC__ASSERT(rice_parameters
[0] == 0);
514 if(!FLAC__bitwriter_write_raw_uint32(bw
, pesc
, plen
))
516 if(!FLAC__bitwriter_write_raw_uint32(bw
, raw_bits
[0], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN
))
518 for(i
= 0; i
< residual_samples
; i
++) {
519 if(!FLAC__bitwriter_write_raw_int32(bw
, residual
[i
], raw_bits
[0]))
526 uint32_t i
, j
, k
= 0, k_last
= 0;
527 uint32_t partition_samples
;
528 const uint32_t default_partition_samples
= (residual_samples
+predictor_order
) >> partition_order
;
529 for(i
= 0; i
< (1u<<partition_order
); i
++) {
530 partition_samples
= default_partition_samples
;
532 partition_samples
-= predictor_order
;
533 k
+= partition_samples
;
534 if(raw_bits
[i
] == 0) {
535 if(!FLAC__bitwriter_write_raw_uint32(bw
, rice_parameters
[i
], plen
))
537 if(!FLAC__bitwriter_write_rice_signed_block(bw
, residual
+k_last
, k
-k_last
, rice_parameters
[i
]))
541 if(!FLAC__bitwriter_write_raw_uint32(bw
, pesc
, plen
))
543 if(!FLAC__bitwriter_write_raw_uint32(bw
, raw_bits
[i
], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN
))
545 for(j
= k_last
; j
< k
; j
++) {
546 if(!FLAC__bitwriter_write_raw_int32(bw
, residual
[j
], raw_bits
[i
]))