CHAPTER 9
782
Multimedia Features
TABLE 9.28 Monitor specifier values
VALUE
DESCRIPTION
0
1
2
3
4
5
6
The monitor containing the largest section of the document window
The monitor containing the smallest section of the document window
Primary monitor. If no monitor is considered primary, use case 0
Monitor with the greatest color depth
Monitor with the greatest area (in pixels squared)
Monitor with the greatest height (in pixels)
Monitor with the greatest width (in pixels)
For some of these values, it is possible have a “tie” at play-time; for example, two
monitors might have the same color depth. Ties are broken in an implementa-
tion-dependent manner.
9.2 Sounds
A
sound object (PDF 1.2)
is a stream containing sample values that define a sound
to be played through the computer’s speakers. The
Sound
entry in a sound anno-
tation or sound action dictionary (see Table 8.36 on page 638 and Table 8.58 on
annotation is activated.
Since a sound object is a stream, it can contain any of the standard entries com-
mon to all streams, as described in Table 3.4 on page 62. In particular, if it con-
tains an
F
(file specification) entry, the sound is defined in an external file. This
sound file must be self-describing, containing all information needed to render
the sound; no additional information need be present in the PDF file.
Note:
The AIFF, AIFF-C (Mac OS), RIFF (
. wav
), and snd (
. au
) file formats are all
self-describing.
If no
F
entry is present, the sound object itself contains the sample data and all
other information needed to define the sound. Table 9.29 shows the additional
dictionary entries specific to a sound object.