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Variables:
Each item of a Daisy-CD is read into the array struct daisy.
Each element of this array has the following variables:
playorder The playing-order.
x, y The screen-position of the element.
screen The screen-number of the element.
begin The start-time of the element in the audio-file.
duration The duration (in seconds) of this element.
smil_file The name of the smil_file on the cd.
anchor The start-point of the element in the smil_file.
label The label of the element.
level The level of the element.
page_number` The element starts on this page.
daisy_mp The mount-point of the Daisy-CD.
filename A temporary name for an Audio-CD.
first_lsn The start of a track on an Audio-CD.
last_lsn The end of a track on an Audio-CD.
The struct My_attribute contains the attributes of tags in the smil_files.
The struct Misc contains global variables.
Functions:
First read preferences from $PWD/.daisy-player.xml. read_xml().
Set current locale.
Read command-line options.
Set two ncurses windows titlewin and screenwin.
The function create_daisy_struct() determines the number of elements
needed in the array daisy.
If argument is an daisy-file or there is a Daisy-CD, read information
into the struct daisy.
If it is Daisy 2.02 read data with function fill_daisy_struct_2().
If it is Daisy 3 read data with function read_daisy_3().
If it is an Audio-CD handle it with the function get_number_of_tracks().
The function browse() will handle keyh-board commands.
ENTER starts playing. Each element of the array daisy contains the name of
the smil_file and the anchor which points to the start of this
item in the audio-file. The audio-file is played with the sox library.
The sox library is too slow for finding the startpoint in the audio-file. So
the mad library is used for cutting out the clip and it is written
to a temporary WAV-file. Playing itself is done by sox.
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