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Pay attention to the return value of the manipulate function.

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While this looks like an optimization, it prevents a crash from occurring
when used with certain audiohook callbacks (diagnosed with SVN trunk,
backported to 1.4 to keep the source consistent across versions).


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@224855 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2009-10-20 22:07:11 +00:00
parent 7de8f53607
commit 0db2d51ac1
1 changed files with 12 additions and 4 deletions
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14
main/audiohook.c
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@@ -657,11 +657,17 @@ static struct ast_frame *audio_audiohook_write_list(struct ast_channel *chan, st
continue; continue;
} }
/* Feed in frame to manipulation */ /* Feed in frame to manipulation */
audiohook->manipulate_callback(audiohook, chan, middle_frame, direction); if (audiohook->manipulate_callback(audiohook, chan, middle_frame, direction)) {
/* Manipulation failed */
ast_frfree(middle_frame);
middle_frame = NULL;
}
ast_audiohook_unlock(audiohook); ast_audiohook_unlock(audiohook);
} }
AST_LIST_TRAVERSE_SAFE_END AST_LIST_TRAVERSE_SAFE_END
end_frame = middle_frame; if (middle_frame) {
end_frame = middle_frame;
}
} }
/* Now we figure out what to do with our end frame (whether to transcode or not) */ /* Now we figure out what to do with our end frame (whether to transcode or not) */
@@ -689,7 +695,9 @@ static struct ast_frame *audio_audiohook_write_list(struct ast_channel *chan, st
} }
} else { } else {
/* No frame was modified, we can just drop our middle frame and pass the frame we got in out */ /* No frame was modified, we can just drop our middle frame and pass the frame we got in out */
ast_frfree(middle_frame); if (middle_frame) {
ast_frfree(middle_frame);
}
} }
return end_frame; return end_frame;