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FFmpeg
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Typedefs | |
| using | clients = =============================================Slice threading - *The client 's draw_horiz_band() must be thread-safe according to the comment in avcodec.h. Frame threading - *Restrictions with slice threading also apply. *Custom get_buffer2() and get_format() callbacks must be thread-safe. *There is one frame of delay added for every thread beyond the first one. Clients must be able to handle this |
Functions | |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before | ff_progress_frame_await () has been called on them. reget_buffer() and buffer age optimizations no longer work. *The contents of buffers must not be written to after ff_progress_frame_report() has been called on them. This includes draw_edges(). Porting codecs to frame threading |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling | get_buffer () |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call | ff_thread_finish_setup () afterwards. If some code can 't be moved |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have | update_thread_context () run it in the next thread. Add AV_CODEC_CAP_FRAME_THREADS to the codec capabilities. There will be very little speed gain at this point but it should work. Use ff_thread_get_buffer()(or ff_progress_frame_get_buffer() in case you have inter-frame dependencies and use the ProgressFrame API) to allocate frame buffers. Call ff_progress_frame_report() 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 |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have as it s useful too and the implementation is trivial when you re doing this Note that | draw_edges () needs to be called before reporting progress. Before accessing a reference frame or its MVs |
Variables | |
| FFmpeg multithreading | methods |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec | implementations |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across | frames |
| using clients = ============================================= Slice threading - * The client's draw_horiz_band() must be thread-safe according to the comment in avcodec.h. Frame threading - * Restrictions with slice threading also apply. * Custom get_buffer2() and get_format() callbacks must be thread-safe. * There is one frame of delay added for every thread beyond the first one. Clients must be able to handle this |
Definition at line 25 of file multithreading.txt.
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel* The contents of buffers must not be read before ff_progress_frame_await | ( | ) |
Referenced by await_reference_row(), decode(), decode_frame(), decode_mb_row_no_filter(), decode_mode(), decode_slice(), find_ref_mvs(), handle_p_frame_apng(), handle_p_frame_png(), hevc_await_progress(), mc_chroma_scaled(), mc_chroma_unscaled(), mc_luma_scaled(), mc_luma_unscaled(), temporal_luma_motion_vector(), vp78_decode_frame(), vp8_mc_chroma(), vp8_mc_luma(), and vp9_decode_frame().
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel* The contents of buffers must not be read before as well as code calling get_buffer | ( | ) |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel* The contents of buffers must not be read before as well as code calling up to before the decode process starts Call ff_thread_finish_setup | ( | ) |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel* The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have update_thread_context | ( | ) |
| the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel* The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have as it s useful too and the implementation is trivial when you re doing this Note that draw_edges | ( | ) |
| FFmpeg multithreading methods |
1.8.17