cleanup
parent
0992da86d0
commit
84b402b246
|
|
@ -1,59 +0,0 @@
|
|||
! Copyright (C) 2009 Daniel Ehrenberg
|
||||
! See http://factorcode.org/license.txt for BSD license.
|
||||
USING: kernel system destructors accessors byte-arrays math math.functions locals io.files io.encodings.binary combinators sequences namespaces ;
|
||||
QUALIFIED: bitstreams
|
||||
QUALIFIED: io
|
||||
USING: prettyprint ;
|
||||
|
||||
IN: flac.bitstream
|
||||
|
||||
CONSTANT: default-bitreader-capacity 65536
|
||||
SYMBOL: flac-input-stream
|
||||
|
||||
TUPLE: flac-stream-reader stream bitstream ;
|
||||
|
||||
GENERIC: read-uint ( n flac-stream-reader -- n )
|
||||
GENERIC: align-to-byte ( flac-stream-reader -- )
|
||||
|
||||
: <flac-stream-reader> ( path -- flac-stream-reader )
|
||||
binary <file-reader> B{ } bitstreams:<msb0-bit-reader> flac-stream-reader boa ;
|
||||
|
||||
M: flac-stream-reader dispose stream>> dispose ;
|
||||
|
||||
: flac-align-to-byte ( -- )
|
||||
8 flac-input-stream get bitstream>> bitstreams:align ;
|
||||
|
||||
: flac-read-uint ( n -- n )
|
||||
[ dup flac-input-stream get bitstream>> bitstreams:enough-bits? not ]
|
||||
[
|
||||
flac-input-stream get
|
||||
[ stream>> default-bitreader-capacity swap io:stream-read ] [ bitstream>> ] bi
|
||||
dup bytes>> swap [ prepend ] dip swap >>bytes drop
|
||||
] while flac-input-stream get bitstream>> bitstreams:read ;
|
||||
|
||||
: flac-seek ( n -- )
|
||||
[ 8 * flac-input-stream get bitstream>> bitstreams:seek ]
|
||||
[ io:seek-relative flac-input-stream get stream>> io:stream-seek ] bi ;
|
||||
|
||||
:: flac-read-sint ( n -- n )
|
||||
n flac-read-uint :> val
|
||||
val val n 1 - neg shift n shift - ;
|
||||
|
||||
: flac-read-utf8-uint ( -- n )
|
||||
8 flac-read-uint
|
||||
[ dup 0b11000000 >= ] [ 8 flac-read-uint drop 2^ 0xff bitand ] while ;
|
||||
|
||||
: flac-read-rice-sint ( param -- n )
|
||||
0 [ 1 flac-read-uint 0 = ] [ 1 + ] while
|
||||
[ swap shift ] [ flac-read-uint ] bi bitor
|
||||
[ -1 shift ] [ 1 bitand neg ] bi ^ ;
|
||||
|
||||
|
||||
: with-flac-stream-reader* ( flac-bitstream quot -- )
|
||||
flac-input-stream swap with-variable ; inline
|
||||
|
||||
: with-flac-stream-reader ( flac-bitstream quot -- )
|
||||
[ with-flac-stream-reader* ] curry with-disposal ; inline
|
||||
|
||||
: with-flac-file-reader ( filename quot -- )
|
||||
[ <flac-stream-reader> ] dip with-flac-stream-reader ; inline
|
||||
|
|
@ -1,37 +1,25 @@
|
|||
! Copyright (C) 2020 .
|
||||
! See http://factorcode.org/license.txt for BSD license.
|
||||
USING: math io.encodings.binary kernel io io.files locals endian bit-arrays math.intervals combinators combinators.extras math.order math.bits sequences namespaces accessors byte-arrays math.bitwise arrays generalizations ;
|
||||
USING: kernel math math.order combinators combinators.extras generalizations math.bitwise accessors sequences ;
|
||||
USING: flac.format flac.stream ;
|
||||
USING: prettyprint ;
|
||||
USING: flac.bitstream flac.metadata flac.format ;
|
||||
|
||||
IN: flac.decoder
|
||||
|
||||
SYMBOL: current-flac-output
|
||||
|
||||
: decode-block-size ( n -- n )
|
||||
dup
|
||||
{
|
||||
{ [ 0b0000 = ] [ drop reserved-block-size ] }
|
||||
{ [ 0b0001 = ] [ drop 192 ] }
|
||||
{ [ 0b0010 0b0101 between? ] [ 2 - 2^ 567 * ] }
|
||||
{ [ 0b0110 = ] [ drop 8 flac-read-uint 1 + ] }
|
||||
{ [ 0b0111 = ] [ drop 16 flac-read-uint 1 + ] }
|
||||
{ [ 0b0110 = ] [ drop 8 flac-read 1 + ] }
|
||||
{ [ 0b0111 = ] [ drop 16 flac-read 1 + ] }
|
||||
{ [ 0b1000 0b1111 between? ] [ 8 - 2^ 256 * ] }
|
||||
} cond-case ;
|
||||
|
||||
: decode-bits-per-sample ( n -- n )
|
||||
{
|
||||
{ 0b000 [ "TODO" ] }
|
||||
{ 0b001 [ 8 ] }
|
||||
{ 0b010 [ 12 ] }
|
||||
{ 0b011 [ reserved-sample-size ] }
|
||||
{ 0b100 [ 16 ] }
|
||||
{ 0b101 [ 20 ] }
|
||||
{ 0b110 [ 24 ] }
|
||||
{ 0b111 [ reserved-sample-size ] }
|
||||
} case ;
|
||||
|
||||
: decode-sample-rate ( n -- n )
|
||||
{
|
||||
{ 0b0000 [ "TODO" ] }
|
||||
{ 0b0000 [ "TODO: GET FROM STREAMINFO" ] }
|
||||
{ 0b0001 [ 88200 ] }
|
||||
{ 0b0010 [ 17640 ] }
|
||||
{ 0b0011 [ 19200 ] }
|
||||
|
|
@ -43,108 +31,95 @@ IN: flac.decoder
|
|||
{ 0b1001 [ 44100 ] }
|
||||
{ 0b1010 [ 48000 ] }
|
||||
{ 0b1011 [ 96000 ] }
|
||||
{ 0b1100 [ 8 flac-read-uint 1000 * ] } ! sample rate in kHz
|
||||
{ 0b1101 [ 16 flac-read-uint ] } ! sample rate in Hz
|
||||
{ 0b1110 [ 16 flac-read-uint 10 * ] } ! sample rate in tens of Hz
|
||||
{ 0b1100 [ 8 flac-read 1000 * ] } ! sample rate in kHz
|
||||
{ 0b1101 [ 16 flac-read ] } ! sample rate in Hz
|
||||
{ 0b1110 [ 16 flac-read 10 * ] } ! sample rate in tens of Hz
|
||||
{ 0b1111 [ invalid-sample-rate ] }
|
||||
} case ;
|
||||
|
||||
: decode-channels ( n -- channels channel-assignment )
|
||||
dup
|
||||
: decode-channel-assignment ( n -- channel-assignment )
|
||||
{
|
||||
{ [ dup 0b0000 0b0111 between? ] [ 1 + ] }
|
||||
{ [ 0b1000 0b1010 between? ] [ 2 ] }
|
||||
[ invalid-channel-assignment ]
|
||||
} cond swap
|
||||
<flac-channel-assignment> ;
|
||||
{ [ 0b0000 0b0111 between? ] [ 0 ] }
|
||||
{ [ 0b1000 = ] [ 1 ] }
|
||||
{ [ 0b1001 = ] [ 2 ] }
|
||||
{ [ 0b1010 = ] [ 3 ] }
|
||||
[ reserved-channel-assignment ]
|
||||
} cond-case <flac-channel-assignment> ;
|
||||
|
||||
: read-flac-subframe-verbatim ( frame-header subframe-header -- verbatim-subframe )
|
||||
[ [ blocksize>> ] [ bits-per-sample>> ] bi ] dip wasted-bits>> - <repetition>
|
||||
[ flac-read-uint ] map
|
||||
flac-subframe-constant boa ;
|
||||
|
||||
: read-flac-subframe-constant ( frame-header subframe-header -- constant-subframe )
|
||||
[ [ blocksize>> ] [ bits-per-sample>> ] bi ] dip wasted-bits>> - flac-read-uint <repetition> [ ] map ;
|
||||
|
||||
! :: read-residual-partitioned-rice ( frame-header subframe-header -- rice residual )
|
||||
! 4 flac-read-uint :> partition-order
|
||||
! partition-order .
|
||||
! frame-header blocksize>> -1 partition-order * shift :> samples
|
||||
! samples .
|
||||
! 1 partition-order shift 4 <array> [
|
||||
! dup .
|
||||
! flac-read-uint :> param
|
||||
! param 0b1111 =
|
||||
! [ 5 flac-read-uint :> numbits samples numbits <array> [ flac-read-uint ] map drop "dicks" . param ]
|
||||
! [ samples param <array> [ flac-read-uint ] map first . "balls" . param dup . ] if
|
||||
! ] map :> parameters
|
||||
! parameters .
|
||||
! partition-order
|
||||
! flac-entropy-coding-method-partitioned-rice-contents new
|
||||
! flac-entropy-coding-method-partitioned-rice boa parameters ;
|
||||
|
||||
|
||||
:: read-residual-partitioned-rice ( frame-header subframe-header -- rice residual )
|
||||
frame-header blocksize>> :> blocksize
|
||||
4 flac-read-uint :> partition-order
|
||||
partition-order 2^ :> partitions
|
||||
blocksize mod partitions 0 = [ invalid-blocksize/rice-partitions ] unless
|
||||
partitions <iota>
|
||||
[
|
||||
|
||||
]
|
||||
2drop flac-entropy-coding-method-partitioned-rice-contents new f ;
|
||||
|
||||
: read-residual-partitioned-rice2 ( frame-header subframe-header -- rice residual )
|
||||
2drop flac-entropy-coding-method-partitioned-rice-contents new f ;
|
||||
|
||||
: read-residual-coding-method-type ( -- coding-method )
|
||||
2 flac-read-uint dup
|
||||
2 > [ reserved-residual-coding-type ] when
|
||||
<flac-entropy-coding-method-type> ;
|
||||
|
||||
: flac-read-residuals ( frame-header subframe-header -- entropy-coding-method residual )
|
||||
read-residual-coding-method-type
|
||||
dup {
|
||||
{ entropy-coding-partitioned-rice [ read-residual-partitioned-rice ] }
|
||||
{ entropy-coding-partitioned-rice2 [ read-residual-partitioned-rice2 ] }
|
||||
[ reserved-residual-coding-type ]
|
||||
: decode-bits-per-sample ( stream-info n -- n )
|
||||
{
|
||||
{ 0b000 [ 0 ] }
|
||||
{ 0b001 [ 8 ] }
|
||||
{ 0b010 [ 12 ] }
|
||||
{ 0b011 [ reserved-sample-size ] }
|
||||
{ 0b100 [ 16 ] }
|
||||
{ 0b101 [ 20 ] }
|
||||
{ 0b110 [ 24 ] }
|
||||
{ 0b111 [ reserved-sample-size ] }
|
||||
} case
|
||||
flac-entropy-coding-method boa ;
|
||||
dup 0 = [ drop bits-per-sample>> ] [ nip ] if ;
|
||||
|
||||
: read-flac-subframe-warmup-samples ( frame-header subframe-header -- seq )
|
||||
! TODO: handle wasted bits...
|
||||
[ bits-per-sample>> ] [ predictor-order>> ] bi* swap <repetition> [ flac-read-uint ] map ;
|
||||
: read/assert-frame-sync-code ( -- )
|
||||
15 flac-read 0b111111111111100 = [ sync-code-error ] unless ;
|
||||
|
||||
: read-flac-subframe-fixed ( frame-header subframe-header -- fixed-subframe )
|
||||
2dup [ read-flac-subframe-warmup-samples ] [ flac-read-residuals ] 2bi*
|
||||
flac-subframe-fixed boa ;
|
||||
: read-flac-frame-header ( stream-info -- frame-header )
|
||||
[
|
||||
read/assert-frame-sync-code
|
||||
1 flac-read <flac-frame-blocking-strategy>
|
||||
4 flac-read ! blocksize code
|
||||
4 flac-read ! sample rate code
|
||||
4 flac-read decode-channel-assignment
|
||||
] dip
|
||||
3 flac-read decode-bits-per-sample
|
||||
1 flac-read drop ! ignore magic sync for now
|
||||
flac-read-coded-number
|
||||
! decoding blocksize/samplerate potentially reads from end of header
|
||||
[ decode-block-size ] 4dip
|
||||
[ decode-sample-rate ] 3dip
|
||||
8 flac-read
|
||||
flac-frame-header boa ;
|
||||
|
||||
: read-flac-subframe-qlp-coeff-precision ( -- precision )
|
||||
4 flac-read-uint 1 + ;
|
||||
: read-flac-subframe-wasted-bits ( -- k )
|
||||
1 flac-read 1 = [ 0 [ 1 + 1 flac-read 0 = ] loop ] [ 0 ] if ;
|
||||
|
||||
: read-flac-qlp-shift ( -- quantization-level )
|
||||
5 flac-read-uint ;
|
||||
: read-flac-subframe-constant ( blocksize bps wasted-bits -- constant-subframe )
|
||||
[ flac-read-int32 ] dip shift <repetition> [ ] map flac-subframe-constant boa ;
|
||||
|
||||
: read-flac-qlp-coeff ( subframe-header coeff-precision -- seq )
|
||||
[ predictor-order>> ] dip <repetition> [ flac-read-uint ] map ;
|
||||
: read-flac-subframe-verbatim ( blocksize bps wasted-bits -- verbatim-subframe )
|
||||
[ <repetition> ] dip swap [ flac-read-int32 swap shift ] with map flac-subframe-verbatim boa ;
|
||||
|
||||
: read-residual-coding-method-type ( -- coding-method param-bits param-escape )
|
||||
2 flac-read dup
|
||||
2 > [ reserved-residual-coding-type ] when
|
||||
<flac-entropy-coding-method-type>
|
||||
dup entropy-coding-partitioned-rice = [ 4 0xf ] [ 5 0x1f ] if ;
|
||||
|
||||
: read-flac-subframe-lpc ( frame-header subframe-header -- lpc-subframe )
|
||||
2drop 1 ;
|
||||
! : read-flac-subframe-lpc ( frame-header subframe-header -- lpc-subframe )
|
||||
! [ read-flac-subframe-warmup-samples ] 2keep
|
||||
! [
|
||||
! nip
|
||||
! read-flac-subframe-qlp-coeff-precision dup
|
||||
! read-flac-qlp-shift
|
||||
! [ swap read-flac-qlp-coeff ] dip
|
||||
! ]
|
||||
! [ flac-read-residuals ] 2tri
|
||||
! flac-subframe boa ;
|
||||
|
||||
:: flac-read-residuals ( blocksize -- sequence )
|
||||
read-residual-coding-method-type :> ( coding-type param-bits param-escape )
|
||||
1 ;
|
||||
|
||||
: read-flac-subframe-sync ( -- )
|
||||
1 flac-read-uint 1 = [ invalid-subframe-sync ] when ;
|
||||
: read-flac-subframe-warmup-samples ( bps order -- seq )
|
||||
<repetition> [ flac-read-int32 ] map ;
|
||||
|
||||
:: read-flac-subframe-fixed ( blocksize bps order -- fixed-subframe )
|
||||
bps order read-flac-subframe-warmup-samples :> warmup
|
||||
4 flac-read :> partition-order
|
||||
partition-order 2^ :> partitions
|
||||
|
||||
! 2dup [ read-flac-subframe-warmup-samples ] [ flac-read-residuals ] 2bi*
|
||||
! flac-subframe-fixed boa ;
|
||||
|
||||
: read-flac-subframe-qlp-coeff-precision ( -- precision )
|
||||
4 flac-read 1 + ;
|
||||
|
||||
: read-flac-qlp-shift ( -- quantization-level )
|
||||
5 flac-read ;
|
||||
|
||||
: read-flac-qlp-coeff ( subframe-header coeff-precision -- seq )
|
||||
[ predictor-order>> ] dip <repetition> [ flac-read ] map ;
|
||||
|
||||
! 000000 constant
|
||||
! 000001 verbatim
|
||||
|
|
@ -154,75 +129,58 @@ IN: flac.decoder
|
|||
! 01xxxx reserved
|
||||
! 1xxxxx lpc
|
||||
: read-flac-subframe-type ( -- subframe-type order )
|
||||
6 flac-read-uint dup
|
||||
6 flac-read dup
|
||||
{
|
||||
{ [ 0b0 = ] [ drop f subframe-type-constant ] }
|
||||
{ [ 0b1 = ] [ drop f subframe-type-verbatim ] }
|
||||
{ [ 0b0000 = ] [ drop f subframe-type-constant ] }
|
||||
{ [ 0b0001 = ] [ drop f subframe-type-verbatim ] }
|
||||
{ [ 0b1000 0b1100 between? ] [ 3 clear-bit subframe-type-fixed ] }
|
||||
{ [ 0b100000 0b111111 between? ] [ 5 clear-bit 1 + subframe-type-lpc ] }
|
||||
[ drop reserved-subframe-type ]
|
||||
} cond-case swap ;
|
||||
|
||||
: read-flac-subframe-wasted-bits ( -- k )
|
||||
1 flac-read-uint
|
||||
1 = [ [ flac-read-uint dup 0 = ] [ 1 + ] while ] [ 0 ] if* ;
|
||||
: read/assert-flac-subframe-sync ( -- )
|
||||
1 flac-read 1 = [ invalid-subframe-sync ] when ;
|
||||
|
||||
: read-flac-subframe-header ( -- subframe-header )
|
||||
read-flac-subframe-sync
|
||||
read/assert-flac-subframe-sync
|
||||
read-flac-subframe-type
|
||||
read-flac-subframe-wasted-bits
|
||||
flac-subframe-header boa ;
|
||||
|
||||
: read-flac-subframe ( frame-header -- subframe )
|
||||
read-flac-subframe-header dup dup
|
||||
[
|
||||
subframe-type>>
|
||||
: calculate-bits-per-sample ( bps wasted-bits subframe-type channel -- bps' )
|
||||
[ - ] 2dip swap
|
||||
{
|
||||
{ subframe-type-constant [ read-flac-subframe-constant ] }
|
||||
{ subframe-type-verbatim [ read-flac-subframe-verbatim ] }
|
||||
{ subframe-type-fixed [ read-flac-subframe-fixed ] }
|
||||
{ subframe-type-lpc [ read-flac-subframe-lpc ] }
|
||||
{ channel-assignment-left [ 1 = [ 1 ] [ 0 ] if ] }
|
||||
{ channel-assignment-right [ 0 = [ 1 ] [ 0 ] if ] }
|
||||
{ channel-assignment-mid [ 1 = [ 1 ] [ 0 ] if ] }
|
||||
[ 2drop 0 ]
|
||||
} case + ;
|
||||
|
||||
:: read-flac-subframe ( frame-header channel -- subframe )
|
||||
read-flac-subframe-header :> subframe-header
|
||||
subframe-header wasted-bits>> :> wasted-bits
|
||||
subframe-header subframe-type>> :> subframe-type
|
||||
subframe-header predictor-order>> :> order
|
||||
frame-header bits-per-sample>> wasted-bits subframe-type channel calculate-bits-per-sample :> bps
|
||||
frame-header blocksize>> :> blocksize
|
||||
|
||||
subframe-type
|
||||
{
|
||||
{ subframe-type-constant [ blocksize bps wasted-bits read-flac-subframe-constant ] }
|
||||
{ subframe-type-verbatim [ blocksize bps wasted-bits read-flac-subframe-verbatim ] }
|
||||
! { subframe-type-fixed [ blocksize bps wasted-bits read-flac-subframe-fixed ] }
|
||||
! { subframe-type-lpc [ blocksize bps wasted-bits read-flac-subframe-lpc ] }
|
||||
} case
|
||||
] dip swap
|
||||
flac-subframe boa ;
|
||||
subframe-header swap flac-subframe boa ;
|
||||
|
||||
: read-flac-subframes ( frame-header -- seq )
|
||||
dup channels>> swap <repetition> [ read-flac-subframe ] map ;
|
||||
|
||||
: read-flac-sync-frame ( -- )
|
||||
14 flac-read-uint drop ! sync
|
||||
1 flac-read-uint drop ; ! TODO: handle unparsable frame
|
||||
|
||||
: read-flac-frame-header ( -- frame-header )
|
||||
read-flac-sync-frame
|
||||
1 flac-read-uint <flac-frame-blocking-strategy>
|
||||
4 flac-read-uint ! blocksize code
|
||||
4 flac-read-uint ! sample rate code
|
||||
4 flac-read-uint decode-channels
|
||||
3 flac-read-uint decode-bits-per-sample
|
||||
1 flac-read-uint drop ! ignore magic sync for now
|
||||
flac-read-utf8-uint
|
||||
! decoding blocksize/samplerate potentially reads from end of header
|
||||
[ decode-block-size ] 5 ndip
|
||||
[ decode-sample-rate ] 4dip
|
||||
8 flac-read-uint
|
||||
flac-frame-header boa ;
|
||||
: read-flac-subframes ( stream-info frame-header -- seq )
|
||||
[ channels>> ] dip swap <iota> [ read-flac-subframe ] with map ;
|
||||
|
||||
: read-flac-frame-footer ( -- frame-footer )
|
||||
16 flac-read-uint flac-frame-footer boa ;
|
||||
16 flac-read flac-frame-footer boa ;
|
||||
|
||||
: read-flac-frame ( -- frame )
|
||||
read-flac-frame-header dup
|
||||
read-flac-subframes
|
||||
: read-flac-frame ( stream-info -- frame )
|
||||
[ read-flac-frame-header ] keep swap
|
||||
[ read-flac-subframes ] keep swap
|
||||
read-flac-frame-footer
|
||||
flac-frame boa ;
|
||||
|
||||
: read-flac-file ( filename -- flac-stream )
|
||||
[
|
||||
read-flac-metadata drop
|
||||
read-flac-frame drop
|
||||
read-flac-frame drop
|
||||
read-flac-frame drop
|
||||
read-flac-frame
|
||||
|
||||
] with-flac-file-reader ;
|
||||
|
|
|
|||
|
|
@ -1,5 +1,3 @@
|
|||
! Copyright (C) 2020 .
|
||||
! See http://factorcode.org/license.txt for BSD license.
|
||||
USING: alien.syntax math byte-arrays sequences kernel strings arrays assocs ;
|
||||
|
||||
IN: flac.format
|
||||
|
|
@ -20,16 +18,17 @@ CONSTANT: MAX-QLP-COEEF-PRECISION 15
|
|||
CONSTANT: MAX-FIXED-ORDER 4
|
||||
CONSTANT: MAX-RICE-PARTITION-ORDER 15
|
||||
|
||||
ERROR: not-a-flac-file ;
|
||||
ERROR: not-a-flac-stream ;
|
||||
ERROR: sync-code-error ;
|
||||
ERROR: invalid-channel-assignment ;
|
||||
ERROR: reserved-block-size ;
|
||||
ERROR: reserved-sample-size ;
|
||||
ERROR: invalid-sample-rate ;
|
||||
ERROR: reserved-subframe-type ;
|
||||
ERROR: reserved-channel-assignment ;
|
||||
ERROR: invalid-subframe-sync ;
|
||||
ERROR: reserved-residual-coding-type ;
|
||||
ERROR: invalid-blocksize/rice-partitions
|
||||
ERROR: invalid-blocksize/rice-partitions ;
|
||||
|
||||
ENUM: flac-frame-blocking-strategy
|
||||
fixed-blocksize variable-blocksize ;
|
||||
|
|
@ -39,35 +38,20 @@ ENUM: flac-frame-number-type
|
|||
frame-number-type-sample ;
|
||||
|
||||
ENUM: flac-channel-assignment
|
||||
channels-mono
|
||||
channels-left/right
|
||||
channels-left/right/center
|
||||
channels-left/right/left-surround/right-surround
|
||||
channels-left/right/center/left-surround/right-surround
|
||||
channels-left/right/center/lfe/left-surround/right-surround
|
||||
channels-left/right/center/lfe/center-surround/side-left/side-right
|
||||
channels-left/right/center/lfe/left-surround/right-surround/side-left/side-right
|
||||
channels-left
|
||||
channels-right
|
||||
channels-mid ;
|
||||
channel-assignment-independent
|
||||
channel-assignment-left
|
||||
channel-assignment-right
|
||||
channel-assignment-mid ;
|
||||
|
||||
TUPLE: flac-frame-header
|
||||
{ blocking-strategy maybe{ fixed-blocksize variable-blocksize } }
|
||||
{ blocksize integer }
|
||||
{ sample-rate integer }
|
||||
{ channels integer }
|
||||
{ channel-assignment
|
||||
maybe{ channels-mono
|
||||
channels-left/right
|
||||
channels-left/right/center
|
||||
channels-left/right/left-surround/right-surround
|
||||
channels-left/right/center/left-surround/right-surround
|
||||
channels-left/right/center/lfe/left-surround/right-surround
|
||||
channels-left/right/center/lfe/center-surround/side-left/side-right
|
||||
channels-left/right/center/lfe/left-surround/right-surround/side-left/side-right
|
||||
channels-left
|
||||
channels-right
|
||||
channels-mid } }
|
||||
maybe{ channel-assignment-independent
|
||||
channel-assignment-left
|
||||
channel-assignment-right
|
||||
channel-assignment-mid } }
|
||||
{ bits-per-sample integer }
|
||||
{ frame|sample-number integer }
|
||||
{ crc integer } ;
|
||||
|
|
@ -84,11 +68,12 @@ ENUM: flac-entropy-coding-method-type
|
|||
|
||||
TUPLE: flac-entropy-coding-method-partitioned-rice-contents
|
||||
{ parameters sequence }
|
||||
{ raw-bits sequence } ;
|
||||
{ raw-bits sequence }
|
||||
{ capacity-by-order integer } ;
|
||||
|
||||
TUPLE: flac-entropy-coding-method-partitioned-rice
|
||||
{ order integer }
|
||||
{ contents flac-entropy-coding-method-partitioned-rice-contents } ;
|
||||
{ contents sequence } ;
|
||||
|
||||
TUPLE: flac-entropy-coding-method
|
||||
{ type maybe{ entropy-coding-partitioned-rice
|
||||
|
|
@ -96,15 +81,16 @@ TUPLE: flac-entropy-coding-method
|
|||
{ data flac-entropy-coding-method-partitioned-rice } ;
|
||||
|
||||
TUPLE: flac-subframe-constant
|
||||
{ data sequence } ;
|
||||
{ value sequence } ;
|
||||
|
||||
TUPLE: flac-subframe-verbatim
|
||||
{ data sequence } ;
|
||||
{ value sequence } ;
|
||||
|
||||
TUPLE: flac-subframe-fixed
|
||||
{ warmup sequence }
|
||||
{ entropy-coding-method flac-entropy-coding-method }
|
||||
residual ;
|
||||
{ order integer }
|
||||
{ warmup sequence }
|
||||
{ residual sequence } ;
|
||||
|
||||
TUPLE: flac-subframe-lpc
|
||||
{ entropy-coding-method maybe{ entropy-coding-partitioned-rice
|
||||
|
|
@ -113,7 +99,8 @@ TUPLE: flac-subframe-lpc
|
|||
{ quantization-level integer }
|
||||
{ qlp-coeff sequence }
|
||||
{ warmup sequence }
|
||||
residual ;
|
||||
{ residual sequence }
|
||||
{ value sequence } ;
|
||||
|
||||
TUPLE: flac-subframe-header
|
||||
{ subframe-type maybe{ subframe-type-constant
|
||||
|
|
|
|||
|
|
@ -1,52 +1,50 @@
|
|||
! Copyright (C) 2020 .
|
||||
! See http://factorcode.org/license.txt for BSD license.
|
||||
USING: endian sequences kernel classes.struct io.binary io.files io.encodings io.encodings.string io.encodings.utf8 io.encodings.binary alien.c-types alien.endian math locals accessors prettyprint combinators math.parser strings arrays io.streams.byte-array sequences.generalizations assocs splitting byte-arrays alien.syntax alien.enums io.encodings.ascii pack ;
|
||||
USING: flac.bitstream flac.format ;
|
||||
|
||||
QUALIFIED: bitstreams
|
||||
USING: kernel math math.parser endian sequences pack io.streams.byte-array io.encodings.utf8 io.encodings.string io.encodings.binary io.encodings.ascii splitting assocs arrays byte-arrays accessors combinators ;
|
||||
QUALIFIED: io
|
||||
|
||||
USING: flac.stream flac.format ;
|
||||
|
||||
IN: flac.metadata
|
||||
|
||||
<PRIVATE
|
||||
|
||||
ERROR: cuesheet-index-reserved-must-be-zero ;
|
||||
|
||||
: read-metadata-block-header ( -- header )
|
||||
1 flac-read-uint 1 =
|
||||
7 flac-read-uint <metadata-type>
|
||||
24 flac-read-uint
|
||||
1 flac-read 1 =
|
||||
7 flac-read <metadata-type>
|
||||
24 flac-read
|
||||
metadata-block-header boa ;
|
||||
|
||||
: read-metadata-block-stream-info ( -- stream-info )
|
||||
16 flac-read-uint
|
||||
16 flac-read-uint
|
||||
24 flac-read-uint
|
||||
24 flac-read-uint
|
||||
20 flac-read-uint
|
||||
3 flac-read-uint 1 +
|
||||
5 flac-read-uint 1 +
|
||||
36 flac-read-uint
|
||||
128 flac-read-uint 16 >be bytes>hex-string
|
||||
16 flac-read
|
||||
16 flac-read
|
||||
24 flac-read
|
||||
24 flac-read
|
||||
20 flac-read
|
||||
3 flac-read 1 +
|
||||
5 flac-read 1 +
|
||||
36 flac-read
|
||||
128 flac-read 16 >be bytes>hex-string
|
||||
stream-info boa ;
|
||||
|
||||
: read-metadata-block-seek-table ( length -- seek-table )
|
||||
18 / <iota> [
|
||||
drop
|
||||
64 flac-read-uint
|
||||
64 flac-read-uint
|
||||
16 flac-read-uint
|
||||
64 flac-read
|
||||
64 flac-read
|
||||
16 flac-read
|
||||
seek-point boa
|
||||
] map
|
||||
seek-table boa ;
|
||||
|
||||
|
||||
: read-metadata-block-vorbis-comment ( length -- vorbis-comment )
|
||||
! vorbis comments are in little endian...
|
||||
drop
|
||||
32 flac-read-uint 4 >le be> dup 8 * flac-read-uint swap >n-byte-array utf8 decode
|
||||
32 flac-read-uint 4 >le be> <iota>
|
||||
32 flac-read 4 >le be> dup 8 * flac-read swap >n-byte-array utf8 decode
|
||||
32 flac-read 4 >le be> <iota>
|
||||
[
|
||||
drop
|
||||
32 flac-read-uint 4 >le be> dup 8 * flac-read-uint swap >n-byte-array utf8 decode
|
||||
32 flac-read 4 >le be> dup 8 * flac-read swap >n-byte-array utf8 decode
|
||||
"=" split
|
||||
] map
|
||||
>alist vorbis-comment boa ;
|
||||
|
|
@ -70,13 +68,13 @@ ERROR: cuesheet-index-reserved-must-be-zero ;
|
|||
length>> <byte-array> ;
|
||||
|
||||
: read-metadata-block-padding ( length -- padding )
|
||||
dup 8 * flac-read-uint drop flac-padding boa ;
|
||||
dup 8 * flac-read drop flac-padding boa ;
|
||||
|
||||
: read-metadata-block-application ( length -- application )
|
||||
8 * flac-read-uint drop application new ;
|
||||
8 * flac-read drop application new ;
|
||||
|
||||
: read-metadata-block-cuesheet ( length -- cuesheet )
|
||||
dup [ 8 * flac-read-uint ] dip >be
|
||||
dup [ 8 * flac-read ] dip >be
|
||||
binary
|
||||
[
|
||||
128 io:read ascii decode
|
||||
|
|
@ -101,14 +99,14 @@ ERROR: cuesheet-index-reserved-must-be-zero ;
|
|||
|
||||
: read-metadata-block-picture ( length -- picture )
|
||||
drop
|
||||
32 flac-read-uint <picture-type>
|
||||
32 flac-read-uint dup 8 * flac-read-uint swap >n-byte-array utf8 decode
|
||||
32 flac-read-uint dup 8 * flac-read-uint swap >n-byte-array utf8 decode
|
||||
32 flac-read-uint
|
||||
32 flac-read-uint
|
||||
32 flac-read-uint
|
||||
32 flac-read-uint
|
||||
32 flac-read-uint dup 8 * flac-read-uint swap >n-byte-array
|
||||
32 flac-read <picture-type>
|
||||
32 flac-read dup 8 * flac-read swap >n-byte-array utf8 decode
|
||||
32 flac-read dup 8 * flac-read swap >n-byte-array utf8 decode
|
||||
32 flac-read
|
||||
32 flac-read
|
||||
32 flac-read
|
||||
32 flac-read
|
||||
32 flac-read dup 8 * flac-read swap >n-byte-array
|
||||
picture boa ;
|
||||
|
||||
: append-picture ( metadata picture -- metadata )
|
||||
|
|
@ -127,8 +125,7 @@ ERROR: cuesheet-index-reserved-must-be-zero ;
|
|||
} case
|
||||
] with-big-endian ;
|
||||
|
||||
: read/assert-flac-magic ( -- )
|
||||
32 flac-read-uint FLAC-MAGIC = [ not-a-flac-file ] unless ;
|
||||
PRIVATE>
|
||||
|
||||
: read-flac-metadata ( -- metadata )
|
||||
read/assert-flac-magic
|
||||
|
|
@ -142,27 +139,27 @@ ERROR: cuesheet-index-reserved-must-be-zero ;
|
|||
: <flac-stream-info> ( filename -- stream-info )
|
||||
[
|
||||
read/assert-flac-magic
|
||||
32 flac-read-uint drop
|
||||
32 flac-read drop
|
||||
read-metadata-block-stream-info
|
||||
] with-flac-file-reader ;
|
||||
|
||||
: <flac-tags> ( filename -- tags )
|
||||
[
|
||||
read/assert-flac-magic
|
||||
[ read-metadata-block-header [ length>> ] [ type>> metadata-vorbis-comment = ] [ last?>> ] tri or ]
|
||||
[ flac-seek ] until [ read-metadata-block-vorbis-comment ] with-big-endian
|
||||
] with-flac-file-reader ;
|
||||
|
||||
: <flac-pictures> ( filename -- pictures )
|
||||
[
|
||||
read/assert-flac-magic
|
||||
[ read-metadata-block-header dup last?>> not ]
|
||||
[
|
||||
[ length>> ] [ type>> metadata-picture = ] bi
|
||||
[ read-metadata-block-picture ]
|
||||
[ flac-seek f ] if
|
||||
] produce nip sift
|
||||
] with-flac-file-reader ;
|
||||
! : <flac-tags> ( filename -- tags )
|
||||
! [
|
||||
! read/assert-flac-magic
|
||||
! [ read-metadata-block-header [ length>> ] [ type>> metadata-vorbis-comment = ] [ last?>> ] tri or ]
|
||||
! [ flac-seek ] until [ read-metadata-block-vorbis-comment ] with-big-endian
|
||||
! ] with-flac-file-reader ;
|
||||
!
|
||||
! : <flac-pictures> ( filename -- pictures )
|
||||
! [
|
||||
! read/assert-flac-magic
|
||||
! [ read-metadata-block-header dup last?>> not ]
|
||||
! [
|
||||
! [ length>> ] [ type>> metadata-picture = ] bi
|
||||
! [ read-metadata-block-picture ]
|
||||
! [ flac-seek f ] if
|
||||
! ] produce nip sift
|
||||
! ] with-flac-file-reader ;
|
||||
|
||||
|
||||
: <flac-metadata> ( filename -- metadata )
|
||||
|
|
|
|||
Loading…
Reference in New Issue