• wm4's avatar
    mmaldec: limit internal buffering · 74beead9
    wm4 authored
    This uses a new MMAL feature, which limits the number of extra frames
    that can be buffered within the decoder. VIDEO_MAX_NUM_CALLBACKS can
    be defined as positive or negative number. Positive numbers are
    absolute, and can lead to deadlocks if the user underestimates the
    number of required buffers. Negative numbers specify the number of extra
    buffers, e.g. -1 means no extra buffer, (-1-N) means N extra buffers.
    
    Set a gratuitous default of -11 (N=10). This is much lower than the
    firmware default, which appears to be 96.
    
    This is backwards compatible, but needs a symbol only present in newer
    firmware headers. (It's an enum item, so it requires a check in
    configure.)
    Signed-off-by: 's avatarAnton Khirnov <anton@khirnov.net>
    74beead9
configure 161 KB