chaitanyagupta

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

chaitanyagupta

#|
JSON parser implemented with cl-lex and CL-Yacc

USAGE:
JSON-PARSER> (parse-with-lexer (json-lexer
                   "{\"foo\":\"bar\",\"baz\":\"bang\",\"bing\":100,\"bingo\":1.1,\"bazo\": [1,2,\"foo\"]}")
                  json-parser)

(:OBJ ("foo" . "bar") ("baz" . "bang") ("bing" . 100) ("bingo" . 1.1) ("bazo" 1 2 "foo"))
JSON-PARSER> (with-open-file (*standard-input* "test.json")

chaitanyagupta

export PKG_CONFIG_PATH=/usr/lib64/pkgconfig:/usr/lib/pkgconfig
export PATH=/usr/bin:$PATH
export LDFLAGS=-L/usr/lib64:/usr/lib
export LD_LIBRARY_PATH=/usr/lib64:/usr/lib
export CPPFLAGS=-I/usr/include

sudo yum-config-manager --enable epel
#sudo yum update -y
sudo yum install -y gcc gcc-c++ glib2-devel.x86_64 libxml2-devel.x86_64 libpng-devel.x86_64 \
libjpeg-turbo-devel.x86_64 gobject-introspection.x86_64 gobject-introspection-devel.x86_64

chaitanyagupta

// .h

@interface AMPNavigationBar : UINavigationBar

@property (nonatomic, assign) CGFloat extraColorLayerOpacity UI_APPEARANCE_SELECTOR;

@end

// .m

chaitanyagupta

;;; Usage (percentage (analyze-systems '(a b c d))) => 42.23

(eval-when (:compile-toplevel :load-toplevel :execute)
  (when (asdf:find-system :named-readtables nil)
    (asdf:load-system :named-readtables)))

(defun analyze-form (form)
  (typecase form
    (symbol
     (when (eql (symbol-package form) (find-package 'cl))