#include "bufferqueue.h"Go to the source code of this file.
Definition at line 300 of file framesync.h.
| Enumerator | |
|---|---|
| EOF_ACTION_REPEAT | |
| EOF_ACTION_ENDALL | |
| EOF_ACTION_PASS | |
| EOF_ACTION_ROUND | |
| EOF_ACTION_PASS | |
| EOF_ACTION_NB | |
Definition at line 26 of file framesync.h.
This API is intended as a helper for filters that have several video input and need to combine them somehow.
If the inputs have different or variable frame rate, getting the input frames to match requires a rather complex logic and a few user-tunable options.
In this API, when a set of synchronized input frames is ready to be procesed is called a frame event. Frame event can be generated in response to input frames on any or all inputs and the handling of situations where some stream extend beyond the beginning or the end of others can be configured.
The basic working of this API is the following: set the on_event callback, then call ff_framesync_activate() from the filter's activate callback. Stream extrapolation mode
Describe how the frames of a stream are extrapolated before the first one and after EOF to keep sync with possibly longer other streams.
| Enumerator | |
|---|---|
| EXT_STOP |
Completely stop all streams with this one. |
| EXT_NULL |
Ignore this stream and continue processing the other ones. |
| EXT_INFINITY |
Extend the frame to infinity. |
Definition at line 60 of file framesync.h.
Get the class for the framesync object.
Definition at line 64 of file framesync.c.
Pre-initialize a frame sync structure.
It sets the class pointer and inits the options to their default values. The entire structure is expected to be already set to 0. This step is optional, but necessary to use the options.
Definition at line 69 of file framesync.c.
Referenced by ff_framesync_init().
Initialize a frame sync structure.
The entire structure is expected to be already set to 0 or preinited.
Definition at line 77 of file framesync.c.
Referenced by config_output(), ff_framesync_init_dualinput(), init_framesync(), lut2_config_output(), and program_opencl_config_output().
Configure a frame sync structure.
Must be called after all options are set but before all use.
Definition at line 117 of file framesync.c.
Referenced by config_output(), init_framesync(), lut2_config_output(), overlay_opencl_config_output(), and program_opencl_config_output().
Free all memory currently allocated.
Definition at line 293 of file framesync.c.
Referenced by overlay_opencl_uninit(), overlay_qsv_uninit(), program_opencl_uninit(), and uninit().
Get the current frame in an input.
Definition at line 256 of file framesync.c.
Referenced by ff_framesync_dualinput_get(), overlay_opencl_blend(), process_frame(), and program_opencl_filter().
Examine the frames in the filter's input and try to produce output.
This function can be the complete implementation of the activate method of a filter using framesync.
Definition at line 344 of file framesync.c.
Referenced by activate(), overlay_opencl_activate(), and program_opencl_activate().
Initialize a frame sync structure for dualinput.
Compared to generic framesync, dualinput assumes the first input is the main one and the filtering is performed on it. The first input will be the only one with sync set and generic timeline support will just pass it unchanged when disabled.
Equivalent to ff_framesync_init(fs, parent, 2) then setting the time base, sync and ext modes on the inputs.
Definition at line 361 of file framesync.c.
Referenced by config_output(), and overlay_opencl_config_output().
Definition at line 379 of file framesync.c.
Referenced by blend_frame_for_dualinput(), do_convolve(), do_psnr(), do_ssim(), do_vmaf(), and ff_framesync_dualinput_get_writable().
Same as ff_framesync_dualinput_get(), but make sure that f0 is writable.
Definition at line 399 of file framesync.c.
Referenced by do_blend(), and load_apply_palette().