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FFmpeg
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FFmpeg
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Multithreading support functions. More...
Go to the source code of this file.
Functions | |
| void | ff_thread_flush (AVCodecContext *avctx) |
| Wait for decoding threads to finish and reset internal state. | |
| int | ff_thread_decode_frame (AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt) |
| Submit a new frame to a decoding thread. | |
| void | ff_thread_finish_setup (AVCodecContext *avctx) |
| If the codec defines update_thread_context(), call this when they are ready for the next thread to start decoding the next frame. | |
| void | ff_thread_report_progress (AVFrame *f, int progress, int field) |
| Notify later decoding threads when part of their reference picture is ready. | |
| void | ff_thread_await_progress (AVFrame *f, int progress, int field) |
| Wait for earlier decoding threads to finish reference pictures. | |
| int | ff_thread_get_buffer (AVCodecContext *avctx, AVFrame *f) |
| Wrapper around get_buffer() for frame-multithreaded codecs. | |
| void | ff_thread_release_buffer (AVCodecContext *avctx, AVFrame *f) |
| Wrapper around release_buffer() frame-for multithreaded codecs. | |
| int | ff_thread_init (AVCodecContext *s) |
| void | ff_thread_free (AVCodecContext *s) |
Multithreading support functions.
Definition in file thread.h.
| void ff_thread_flush | ( | AVCodecContext * | avctx | ) |
Wait for decoding threads to finish and reset internal state.
Called by avcodec_flush_buffers().
| avctx | The context. |
Definition at line 900 of file pthread.c.
Referenced by avcodec_flush_buffers().
| int ff_thread_decode_frame | ( | AVCodecContext * | avctx, |
| AVFrame * | picture, | ||
| int * | got_picture_ptr, | ||
| AVPacket * | avpkt | ||
| ) |
Submit a new frame to a decoding thread.
Returns the next available frame in picture. *got_picture_ptr will be 0 if none is available. The return value on success is the size of the consumed packet for compatibility with avcodec_decode_video2(). This means the decoder has to consume the full packet.
Parameters are the same as avcodec_decode_video2().
Definition at line 606 of file pthread.c.
Referenced by avcodec_decode_video2().
| void ff_thread_finish_setup | ( | AVCodecContext * | avctx | ) |
If the codec defines update_thread_context(), call this when they are ready for the next thread to start decoding the next frame.
After calling it, do not change any variables read by the update_thread_context() method, or call ff_thread_get_buffer().
| avctx | The context. |
Definition at line 715 of file pthread.c.
Referenced by decode_postinit(), ff_h263_decode_frame(), ff_rv34_decode_frame(), ff_thread_get_buffer(), frame_worker_thread(), mimic_decode_frame(), mpeg_field_start(), and vp8_decode_frame().
Notify later decoding threads when part of their reference picture is ready.
Call this when some part of the picture is finished decoding. Later calls with lower values of progress have no effect.
| f | The picture being decoded. |
| progress | Value, in arbitrary units, of how much of the picture has decoded. |
| field | The field being decoded, for field-picture codecs. 0 for top field or frame pictures, 1 for bottom field. |
Definition at line 679 of file pthread.c.
Referenced by decode(), decode_finish_row(), decode_nal_units(), decode_slice_header(), ff_MPV_frame_end(), ff_MPV_frame_start(), ff_MPV_report_decode_progress(), ff_rv34_decode_frame(), field_end(), finish_frame(), mimic_decode_frame(), rv34_decode_slice(), vp3_draw_horiz_band(), vp8_decode_frame(), and vp8_decode_mb_row_sliced().
Wait for earlier decoding threads to finish reference pictures.
Call this before accessing some part of a picture, with a given value for progress, and it will return after the responsible decoding thread calls ff_thread_report_progress() with the same or higher value for progress.
| f | The picture being referenced. |
| progress | Value, in arbitrary units, to wait for. |
| field | The field being referenced, for field-picture codecs. 0 for top field or frame pictures, 1 for bottom field. |
Definition at line 697 of file pthread.c.
Referenced by await_reference_mb_row(), await_reference_row(), await_references(), decode(), ff_er_frame_end(), guess_mv(), is_intra_more_likely(), mpeg4_decode_mb(), MPV_decode_mb_internal(), rv34_decode_mv(), rv34_mc(), vp8_decode_frame(), vp8_mc_chroma(), and vp8_mc_luma().
| int ff_thread_get_buffer | ( | AVCodecContext * | avctx, |
| AVFrame * | f | ||
| ) |
Wrapper around get_buffer() for frame-multithreaded codecs.
Call this function instead of ff_get_buffer(f). Cannot be called after the codec has called ff_thread_finish_setup().
| avctx | The current context. |
| f | The frame to write into. |
Definition at line 955 of file pthread.c.
Referenced by alloc_frame_buffer(), decode_frame(), dnxhd_decode_frame(), lag_decode_frame(), libopenjpeg_decode_frame(), mimic_decode_frame(), and vp8_alloc_frame().
| void ff_thread_release_buffer | ( | AVCodecContext * | avctx, |
| AVFrame * | f | ||
| ) |
Wrapper around release_buffer() frame-for multithreaded codecs.
Call this function instead of avctx->release_buffer(f). The AVFrame will be copied and the actual release_buffer() call will be performed later. The contents of data pointed to by the AVFrame should not be changed until ff_thread_get_buffer() is called on it.
| avctx | The current context. |
| f | The picture being released. |
Definition at line 1017 of file pthread.c.
Referenced by decode_end(), decode_frame(), dnxhd_decode_close(), dnxhd_decode_frame(), free_frame_buffer(), lag_decode_end(), lag_decode_frame(), libopenjpeg_decode_close(), libopenjpeg_decode_frame(), mimic_decode_end(), mimic_decode_frame(), update_frames(), vp3_decode_flush(), vp8_alloc_frame(), and vp8_release_frame().
| int ff_thread_init | ( | AVCodecContext * | s | ) |
Definition at line 1075 of file pthread.c.
Referenced by avcodec_open2().
| void ff_thread_free | ( | AVCodecContext * | s | ) |
Definition at line 1098 of file pthread.c.
Referenced by avcodec_close(), and thread_init().
1.8.2
