[Espeak-general] espeak_EVENT text_position wrapping for long documents

[Reece D. <ms...@go...>]

Hi,

I have implemented progress completed for my orator TTS project when
speaking/recording a file and have noticed the following in eSpeak:
after a certain amount of text, the value of text_position reported by
eSpeak appears to be reset to 0 despite passing the complete (mmapped)
text to the speak function.

For example, Mary Shelly's Frankenstein
(http://www.gutenberg.org/files/84/84.txt) resets every 14.5% or so.
This appears to be 65535, from printing out the value of text_position
along with the % complete value (indeed, 441064/65535 = 0.14858, where
441064 is the length of Frankenstein).

Therefore, it looks as if text_position is stored as a 16-bit value.
However, this does not seem to be the case, as
http://espeak.sourceforge.net/speak_lib.h shows text_position to be an
int, and:
    printf("sizeof(int) = %d\n", sizeof(int));
gives:
    sizeof(int) = 4
where 4*8 = 32, not 16.

Is eSpeak internally using 16-bit numbers? Is it chunking the data
into 64K blocks? A bug?

- Reece