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|
# ffmpeg -f lavfi -i sine -t 10ms test.mp3
# test alt //
$ fq -d mp3 '.headers[].frames[0].flags.unsync // 123' test.mp3
123
$ fq -d mp3 '.headers[].frames[0].size // 123' test.mp3
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
0x00| 00 00| ..|.headers[0].frames[0].size: 15
0x10|00 0f |.. |
# test each in decoded order
$ fq -d mp3 '.headers[0].header[]' test.mp3
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
0x0|49 44 33 |ID3 |.headers[0].header.magic: "ID3" (valid)
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
0x0| 04 | . |.headers[0].header.version: 4 (valid)
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
0x0| 00 | . |.headers[0].header.revision: 0
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.headers[0].header.flags{}:
0x0| 00 | . | unsynchronisation: false
0x0| 00 | . | extended_header: false
0x0| 00 | . | experimental_indicator: false
0x0| 00 | . | unused: 0
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
0x0| 00 00 00 23 | ...# |.headers[0].header.size: 35
# TODO: proper buffer_root test
$ fq -d mp3 -i . test.mp3
mp3> .frames[0].header.mpeg_version | (topath | path_to_expr), tovalue, toactual, tosym, todescription
".frames[0].header.mpeg_version"
"1"
3
"1"
"MPEG Version 1"
mp3> .frames[0].header.bitrate | (topath | path_to_expr), tovalue, toactual, tosym, todescription
".frames[0].header.bitrate"
56000
4
56000
null
mp3> . | (root, buffer_root, format_root, parent | try (topath | path_to_expr) catch .), [parents | topath | path_to_expr]
"."
"."
"."
"expected decode value but got: null (null)"
[]
mp3> .headers[0].header.magic | (root, buffer_root, format_root, parent | topath | path_to_expr), [parents | topath | path_to_expr]
"."
"."
".headers[0]"
".headers[0].header"
[
".headers[0].header",
".headers[0]",
".headers",
"."
]
mp3> .frames[0].side_info.granules[1] | (root, buffer_root, format_root, parent | topath | path_to_expr), [parents | topath | path_to_expr]
"."
"."
".frames[0]"
".frames[0].side_info.granules"
[
".frames[0].side_info.granules",
".frames[0].side_info",
".frames[0]",
".frames",
"."
]
mp3> 123 | root
error: expected decode value but got: number (123)
mp3> 123 | buffer_root
error: expected decode value but got: number (123)
mp3> 123 | format_root
error: expected decode value but got: number (123)
mp3> 123 | parent
error: expected decode value but got: number (123)
mp3> 123 | parents
error: expected decode value but got: number (123)
mp3> ^D
$ fq -d mp3 -i . test.mp3
mp3> . as $c | ("headers", 0, "abc") as $n | $n, try ($c | has($n)) catch .
"headers"
true
0
"cannot check whether object has a key: 0"
"abc"
false
mp3> .headers as $c | (0, "abc") as $n | $n, try ($c | has($n)) catch .
0
true
"abc"
"cannot check whether array has a key: abc"
mp3> .headers[0].header.magic as $c | (0, "abc") as $n | $n, try ($c | has($n)) catch .
0
"has cannot be applied to: string"
"abc"
"has cannot be applied to: string"
mp3> . as $c | ("_start", "_stop", "_len", "_name", "_root", "_buffer_root", "_format_root", "_parent", "_sym", "_description", "_path", "_bits", "_bytes", "_error", "_gap", "_format", "_abc") as $n | $n, try ($c | has($n)) catch .
"_start"
true
"_stop"
true
"_len"
true
"_name"
true
"_root"
true
"_buffer_root"
true
"_format_root"
true
"_parent"
true
"_sym"
true
"_description"
true
"_path"
true
"_bits"
true
"_bytes"
true
"_error"
true
"_gap"
true
"_format"
true
"_abc"
false
mp3> .headers as $c | ("_start", "_stop", "_len", "_name", "_root", "_buffer_root", "_format_root", "_parent", "_sym", "_description", "_path", "_bits", "_bytes", "_error", "_gap", "_format", "_abc") as $n | $n, try ($c | has($n)) catch .
"_start"
"cannot check whether array has a key: _start"
"_stop"
"cannot check whether array has a key: _stop"
"_len"
"cannot check whether array has a key: _len"
"_name"
"cannot check whether array has a key: _name"
"_root"
"cannot check whether array has a key: _root"
"_buffer_root"
"cannot check whether array has a key: _buffer_root"
"_format_root"
"cannot check whether array has a key: _format_root"
"_parent"
"cannot check whether array has a key: _parent"
"_sym"
"cannot check whether array has a key: _sym"
"_description"
"cannot check whether array has a key: _description"
"_path"
"cannot check whether array has a key: _path"
"_bits"
"cannot check whether array has a key: _bits"
"_bytes"
"cannot check whether array has a key: _bytes"
"_error"
"cannot check whether array has a key: _error"
"_gap"
"cannot check whether array has a key: _gap"
"_format"
"cannot check whether array has a key: _format"
"_abc"
"cannot check whether array has a key: _abc"
mp3> .headers[0].header.magic as $c | ("_start", "_stop", "_len", "_name", "_root", "_buffer_root", "_format_root", "_parent", "_sym", "_description", "_path", "_bits", "_bytes", "_error", "_gap", "_format", "_abc") as $n | $n, try ($c | has($n)) catch .
"_start"
"has cannot be applied to: string"
"_stop"
"has cannot be applied to: string"
"_len"
"has cannot be applied to: string"
"_name"
"has cannot be applied to: string"
"_root"
"has cannot be applied to: string"
"_buffer_root"
"has cannot be applied to: string"
"_format_root"
"has cannot be applied to: string"
"_parent"
"has cannot be applied to: string"
"_sym"
"has cannot be applied to: string"
"_description"
"has cannot be applied to: string"
"_path"
"has cannot be applied to: string"
"_bits"
"has cannot be applied to: string"
"_bytes"
"has cannot be applied to: string"
"_error"
"has cannot be applied to: string"
"_gap"
"has cannot be applied to: string"
"_format"
"has cannot be applied to: string"
"_abc"
"has cannot be applied to: string"
mp3> ^D
$ fq -d mp3 -i . test.mp3
mp3> ._start
0
mp3> ._stop
5152
mp3> ._len
5152
mp3> ._name
""
mp3> ._root
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: test.mp3 (mp3)
0x000|49 44 33 04 00 00 00 00 00 23 54 53 53 45 00 00|ID3......#TSSE..| headers[0:1]:
* |until 0x2c.7 (45) | |
0x020| ff fb 40| ..@| frames[0:3]:
0x030|c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00|................|
* |until 0x283.7 (end) (599) | |
| | | footers[0:0]:
mp3> ._buffer_root
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: test.mp3 (mp3)
0x000|49 44 33 04 00 00 00 00 00 23 54 53 53 45 00 00|ID3......#TSSE..| headers[0:1]:
* |until 0x2c.7 (45) | |
0x020| ff fb 40| ..@| frames[0:3]:
0x030|c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00|................|
* |until 0x283.7 (end) (599) | |
| | | footers[0:0]:
mp3> ._format_root
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: test.mp3 (mp3)
0x000|49 44 33 04 00 00 00 00 00 23 54 53 53 45 00 00|ID3......#TSSE..| headers[0:1]:
* |until 0x2c.7 (45) | |
0x020| ff fb 40| ..@| frames[0:3]:
0x030|c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00|................|
* |until 0x283.7 (end) (599) | |
| | | footers[0:0]:
mp3> ._parent
null
mp3> ._sym
null
mp3> todescription
"test.mp3"
mp3> topath
[]
mp3> ._bits
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
0x000|49 44 33 04 00 00 00 00 00 23 54 53 53 45 00 00|ID3......#TSSE..|.: raw bits 0x0-0x284 (644)
* |until 0x283.7 (end) (644) | |
mp3> ._bytes
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
0x000|49 44 33 04 00 00 00 00 00 23 54 53 53 45 00 00|ID3......#TSSE..|.: raw bits 0x0-0x284 (644)
* |until 0x283.7 (end) (644) | |
mp3> ._error
null
mp3> ._gap
false
mp3> ._format
"mp3"
mp3> ._abc
null
mp3> fgrep("toc") | arrays[10]._index
10
mp3> .headers._index
null
mp3> ._index
null
mp3> .headers[0].header.version as $r | {a:12} | tojson({indent: $r}) | println
{
"a": 12
}
mp3> ^D
|
