diff options
Diffstat (limited to 'doc/multithreading.txt')
| -rw-r--r-- | doc/multithreading.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/multithreading.txt b/doc/multithreading.txt index a1068425cd..2b992fcbc5 100644 --- a/doc/multithreading.txt +++ b/doc/multithreading.txt @@ -57,6 +57,11 @@ which re-allocates them for other threads. Add CODEC_CAP_FRAME_THREADS to the codec capabilities. There will be very little speed gain at this point but it should work. +If there are inter-frame dependencies, so the codec calls +ff_thread_report/await_progress(), set AVCodecInternal.allocate_progress. The +frames must then be freed with ff_thread_release_buffer(). +Otherwise leave it at zero and decode directly into the user-supplied frames. + Call ff_thread_report_progress() after some part of the current picture has decoded. A good place to put this is where draw_horiz_band() is called - add this if it isn't called anywhere, as it's useful too and the implementation is trivial when you're |