FFmpeg
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#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/buffer.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/frame.h"
#include "libavutil/hwcontext.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/rational.h"
#include "libavutil/samplefmt.h"
#include "audio.h"
#include "avfilter.h"
#include "avfilter_internal.h"
#include "filters.h"
#include "formats.h"
#include "framequeue.h"
#include "framepool.h"
#include "video.h"
Go to the source code of this file.
Macros | |
#define | OFFSET(x) offsetof(AVFilterContext, x) |
#define | FLAGS AV_OPT_FLAG_FILTERING_PARAM |
#define | TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM |
Enumerations | |
enum | { VAR_T, VAR_N, VAR_W, VAR_H, VAR_VARS_NB } |
Functions | |
static void | tlog_ref (void *ctx, AVFrame *ref, int end) |
static void | command_queue_pop (AVFilterContext *filter) |
static int | append_pad (unsigned *count, AVFilterPad **pads, AVFilterLink ***links, AVFilterPad *newpad) |
Append a new pad. More... | |
int | ff_append_inpad (AVFilterContext *f, AVFilterPad *p) |
Append a new input/output pad to the filter's list of such pads. More... | |
int | ff_append_inpad_free_name (AVFilterContext *f, AVFilterPad *p) |
int | ff_append_outpad (AVFilterContext *f, AVFilterPad *p) |
int | ff_append_outpad_free_name (AVFilterContext *f, AVFilterPad *p) |
int | avfilter_link (AVFilterContext *src, unsigned srcpad, AVFilterContext *dst, unsigned dstpad) |
Link two filters together. More... | |
static void | link_free (AVFilterLink **link) |
static void | update_link_current_pts (FilterLinkInternal *li, int64_t pts) |
void | ff_filter_set_ready (AVFilterContext *filter, unsigned priority) |
Mark a filter ready and schedule it for activation. More... | |
static void | filter_unblock (AVFilterContext *filter) |
Clear frame_blocked_in on all outputs. More... | |
void | ff_avfilter_link_set_in_status (AVFilterLink *link, int status, int64_t pts) |
Set the status field of a link from the source filter. More... | |
static void | link_set_out_status (AVFilterLink *link, int status, int64_t pts) |
Set the status field of a link from the destination filter. More... | |
int | avfilter_insert_filter (AVFilterLink *link, AVFilterContext *filt, unsigned filt_srcpad_idx, unsigned filt_dstpad_idx) |
Insert a filter in the middle of an existing link. More... | |
int | ff_filter_config_links (AVFilterContext *filter) |
Negotiate the media format, dimensions, etc of all inputs to a filter. More... | |
int | ff_request_frame (AVFilterLink *link) |
Request an input frame from the filter at the other end of the link. More... | |
static int64_t | guess_status_pts (AVFilterContext *ctx, int status, AVRational link_time_base) |
static int | request_frame_to_filter (AVFilterLink *link) |
static int | set_enable_expr (FFFilterContext *ctxi, const char *expr) |
int | avfilter_process_command (AVFilterContext *filter, const char *cmd, const char *arg, char *res, int res_len, int flags) |
Make the filter instance process a command. More... | |
unsigned | avfilter_filter_pad_count (const AVFilter *filter, int is_output) |
Get the number of elements in an AVFilter's inputs or outputs array. More... | |
static const char * | default_filter_name (void *filter_ctx) |
static void * | filter_child_next (void *obj, void *prev) |
static const AVClass * | filter_child_class_iterate (void **iter) |
static int | default_execute (AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs) |
AVFilterContext * | ff_filter_alloc (const AVFilter *filter, const char *inst_name) |
Allocate a new filter context and return it. More... | |
static void | free_link (AVFilterLink *link) |
void | avfilter_free (AVFilterContext *filter) |
Free a filter context. More... | |
int | ff_filter_get_nb_threads (AVFilterContext *ctx) |
Get number of threads for current filter instance. More... | |
int | ff_filter_opt_parse (void *logctx, const AVClass *priv_class, AVDictionary **options, const char *args) |
Parse filter options into a dictionary. More... | |
int | ff_filter_process_command (AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags) |
Generic processing of user supplied commands that are set in the same way as the filter options. More... | |
int | avfilter_init_dict (AVFilterContext *ctx, AVDictionary **options) |
Initialize a filter with the supplied dictionary of options. More... | |
int | avfilter_init_str (AVFilterContext *filter, const char *args) |
Initialize a filter with the supplied parameters. More... | |
const char * | avfilter_pad_get_name (const AVFilterPad *pads, int pad_idx) |
Get the name of an AVFilterPad. More... | |
enum AVMediaType | avfilter_pad_get_type (const AVFilterPad *pads, int pad_idx) |
Get the type of an AVFilterPad. More... | |
static int | default_filter_frame (AVFilterLink *link, AVFrame *frame) |
static int | evaluate_timeline_at_frame (AVFilterLink *link, const AVFrame *frame) |
Evaluate the timeline expression of the link for the time and properties of the frame. More... | |
static int | filter_frame_framed (AVFilterLink *link, AVFrame *frame) |
int | ff_filter_frame (AVFilterLink *link, AVFrame *frame) |
Send a frame of data to the next filter. More... | |
static int | samples_ready (FilterLinkInternal *link, unsigned min) |
static int | take_samples (FilterLinkInternal *li, unsigned min, unsigned max, AVFrame **rframe) |
static int | filter_frame_to_filter (AVFilterLink *link) |
static int | forward_status_change (AVFilterContext *filter, FilterLinkInternal *li_in) |
static int | filter_activate_default (AVFilterContext *filter) |
int | ff_filter_activate (AVFilterContext *filter) |
int | ff_inlink_acknowledge_status (AVFilterLink *link, int *rstatus, int64_t *rpts) |
Test and acknowledge the change of status on the link. More... | |
size_t | ff_inlink_queued_frames (AVFilterLink *link) |
Get the number of frames available on the link. More... | |
int | ff_inlink_check_available_frame (AVFilterLink *link) |
Test if a frame is available on the link. More... | |
int | ff_inlink_queued_samples (AVFilterLink *link) |
int | ff_inlink_check_available_samples (AVFilterLink *link, unsigned min) |
Test if enough samples are available on the link. More... | |
static void | consume_update (FilterLinkInternal *li, const AVFrame *frame) |
int | ff_inlink_consume_frame (AVFilterLink *link, AVFrame **rframe) |
Take a frame from the link's FIFO and update the link's stats. More... | |
int | ff_inlink_consume_samples (AVFilterLink *link, unsigned min, unsigned max, AVFrame **rframe) |
Take samples from the link's FIFO and update the link's stats. More... | |
AVFrame * | ff_inlink_peek_frame (AVFilterLink *link, size_t idx) |
Access a frame in the link fifo without consuming it. More... | |
int | ff_inlink_make_frame_writable (AVFilterLink *link, AVFrame **rframe) |
Make sure a frame is writable. More... | |
int | ff_inlink_process_commands (AVFilterLink *link, const AVFrame *frame) |
Process the commands queued in the link up to the time of the frame. More... | |
void | ff_inlink_request_frame (AVFilterLink *link) |
Mark that a frame is wanted on the link. More... | |
void | ff_inlink_set_status (AVFilterLink *link, int status) |
Set the status on an input link. More... | |
int | ff_outlink_get_status (AVFilterLink *link) |
Get the status on an output link. More... | |
int | ff_inoutlink_check_flow (AVFilterLink *inlink, AVFilterLink *outlink) |
Check for flow control between input and output. More... | |
const AVClass * | avfilter_get_class (void) |
int | ff_filter_init_hw_frames (AVFilterContext *avctx, AVFilterLink *link, int default_pool_size) |
Perform any additional setup required for hardware frames. More... | |
int | ff_outlink_frame_wanted (AVFilterLink *link) |
Test if a frame is wanted on an output link. More... | |
int | ff_filter_execute (AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs) |
Variables | |
static const char *const | var_names [] |
static const AVOption | avfilter_options [] |
static const AVClass | avfilter_class |
#define OFFSET | ( | x | ) | offsetof(AVFilterContext, x) |
Definition at line 659 of file avfilter.c.
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM |
Definition at line 660 of file avfilter.c.
#define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM |
Definition at line 661 of file avfilter.c.
anonymous enum |
Enumerator | |
---|---|
VAR_T | |
VAR_N | |
VAR_W | |
VAR_H | |
VAR_VARS_NB |
Definition at line 556 of file avfilter.c.
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Definition at line 47 of file avfilter.c.
Referenced by ff_filter_frame().
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Definition at line 81 of file avfilter.c.
Referenced by avfilter_free(), and ff_inlink_process_commands().
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Append a new pad.
count | Pointer to the number of pads in the list |
pads | Pointer to the pointer to the beginning of the list of pads |
links | Pointer to the pointer to the beginning of the list of links |
newpad | The new pad to add. A copy is made when adding. |
Definition at line 100 of file avfilter.c.
Referenced by ff_append_inpad(), and ff_append_outpad().
int ff_append_inpad | ( | AVFilterContext * | f, |
AVFilterPad * | p | ||
) |
Append a new input/output pad to the filter's list of such pads.
The *_free_name versions will set the AVFILTERPAD_FLAG_FREE_NAME flag ensuring that the name will be freed generically (even on insertion error).
Definition at line 127 of file avfilter.c.
Referenced by decimate_init(), ff_append_inpad_free_name(), fieldmatch_init(), and init().
int ff_append_inpad_free_name | ( | AVFilterContext * | f, |
AVFilterPad * | p | ||
) |
Definition at line 132 of file avfilter.c.
Referenced by init(), join_init(), libplacebo_init(), parse_definition(), program_opencl_init(), and stack_init().
int ff_append_outpad | ( | AVFilterContext * | f, |
AVFilterPad * | p | ||
) |
Definition at line 138 of file avfilter.c.
Referenced by ff_append_outpad_free_name(), and init().
int ff_append_outpad_free_name | ( | AVFilterContext * | f, |
AVFilterPad * | p | ||
) |
Definition at line 143 of file avfilter.c.
Referenced by init(), movie_common_init(), parse_definition(), and split_init().
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Definition at line 198 of file avfilter.c.
Referenced by free_link().
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Definition at line 226 of file avfilter.c.
Referenced by consume_update(), ff_inlink_acknowledge_status(), and link_set_out_status().
void ff_filter_set_ready | ( | AVFilterContext * | filter, |
unsigned | priority | ||
) |
Mark a filter ready and schedule it for activation.
This is automatically done when something happens to the filter (queued frame, status change, request on output). Filters implementing the activate callback can call it directly to perform one more round of processing later. It is also useful for filters reacting to external or asynchronous events.
Definition at line 239 of file avfilter.c.
Referenced by activate(), ff_avfilter_link_set_in_status(), ff_filter_frame(), ff_inlink_request_frame(), ff_request_frame(), filter_frame(), filter_frame_to_filter(), forward_status_change(), link_set_out_status(), process_frame(), request_frame(), spatial_activate(), xfade_activate(), and xfade_opencl_activate().
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Clear frame_blocked_in on all outputs.
This is necessary whenever something changes on input.
Definition at line 249 of file avfilter.c.
Referenced by ff_avfilter_link_set_in_status(), ff_filter_frame(), filter_frame_to_filter(), and link_set_out_status().
void ff_avfilter_link_set_in_status | ( | AVFilterLink * | link, |
int | status, | ||
int64_t | pts | ||
) |
Set the status field of a link from the source filter.
The pts should reflect the timestamp of the status change, in link time base and relative to the frames timeline. In particular, for AVERROR_EOF, it should reflect the end time of the last frame.
Definition at line 260 of file avfilter.c.
Referenced by av_buffersrc_close(), ff_outlink_set_status(), and request_frame_to_filter().
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Set the status field of a link from the destination filter.
The pts should probably be left unset (AV_NOPTS_VALUE).
Definition at line 279 of file avfilter.c.
Referenced by ff_inlink_set_status(), ff_request_frame(), filter_frame_to_filter(), and forward_status_change().
int ff_filter_config_links | ( | AVFilterContext * | filter | ) |
Negotiate the media format, dimensions, etc of all inputs to a filter.
filter | the filter to negotiate the properties for its inputs |
Definition at line 335 of file avfilter.c.
Referenced by ff_filter_config_links(), and graph_config_links().
int ff_request_frame | ( | AVFilterLink * | link | ) |
Request an input frame from the filter at the other end of the link.
This function must not be used by filters using the activate callback, use ff_link_set_frame_wanted() instead.
The input filter may pass the request on to its inputs, fulfill the request from an internal buffer or any other means specific to its function.
When the end of a stream is reached AVERROR_EOF is returned and no further frames are returned after that.
When a filter is unable to output a frame for example due to its sources being unable to do so or because it depends on external means pushing data into it then AVERROR(EAGAIN) is returned. It is important that a AVERROR(EAGAIN) return is returned all the way to the caller (generally eventually a user application) as this step may (but does not have to be) necessary to provide the input with the next frame.
If a request is successful then some progress has been made towards providing a frame on the link (through ff_filter_frame()). A filter that needs several frames to produce one is allowed to return success if one more frame has been processed but no output has been produced yet. A filter is also allowed to simply forward a success return value.
link | the input link |
Definition at line 475 of file avfilter.c.
Referenced by avfilter_graph_request_oldest(), deint_vaapi_request_frame(), ff_yadif_request_frame(), request_frame(), request_frame_ref(), and request_frame_to_filter().
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Definition at line 502 of file avfilter.c.
Referenced by request_frame_to_filter().
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Definition at line 524 of file avfilter.c.
Referenced by filter_activate_default(), and forward_status_change().
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Definition at line 567 of file avfilter.c.
Referenced by avfilter_init_dict(), and avfilter_process_command().
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Definition at line 634 of file avfilter.c.
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Definition at line 640 of file avfilter.c.
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Definition at line 648 of file avfilter.c.
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Definition at line 686 of file avfilter.c.
Referenced by ff_filter_alloc().
AVFilterContext* ff_filter_alloc | ( | const AVFilter * | filter, |
const char * | inst_name | ||
) |
Allocate a new filter context and return it.
filter | what filter to create an instance of |
inst_name | name to give to the new filter context |
Definition at line 699 of file avfilter.c.
Referenced by avfilter_graph_alloc_filter().
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Definition at line 771 of file avfilter.c.
Referenced by avfilter_free().
int ff_filter_get_nb_threads | ( | AVFilterContext * | ctx | ) |
Get number of threads for current filter instance.
This number is always same or less than graph->nb_threads.
Definition at line 840 of file avfilter.c.
Referenced by activate(), analyze_frame(), blend_frame(), blend_frames(), blur_frame(), config_input(), config_input_ref(), config_output(), config_props(), convert_frame(), do_blend(), do_convolve(), do_morpho(), draw_sierpinski(), filter(), filter_frame(), fir_frame(), gaussianiir2d(), geq_filter_frame(), init(), nlmeans_plane(), open_stream(), output_frame(), param_init(), prepare_impulse(), prepare_secondary(), process_frame(), scroll(), and xfade_frame().
int ff_filter_opt_parse | ( | void * | logctx, |
const AVClass * | priv_class, | ||
AVDictionary ** | options, | ||
const char * | args | ||
) |
Parse filter options into a dictionary.
logctx | context for logging |
priv_class | a filter's private class for shorthand options or NULL |
options | dictionary to store parsed options in |
args | options string to parse |
Definition at line 847 of file avfilter.c.
Referenced by avfilter_init_str(), and filter_parse().
int ff_filter_process_command | ( | AVFilterContext * | ctx, |
const char * | cmd, | ||
const char * | arg, | ||
char * | res, | ||
int | res_len, | ||
int | flags | ||
) |
Generic processing of user supplied commands that are set in the same way as the filter options.
NOTE: 'enable' option is handled separately, and not by this function.
Definition at line 900 of file avfilter.c.
Referenced by command(), libplacebo_process_command(), oscilloscope_process_command(), pixscope_process_command(), and process_command().
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Definition at line 992 of file avfilter.c.
Referenced by filter_frame_framed().
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Evaluate the timeline expression of the link for the time and properties of the frame.
Definition at line 1003 of file avfilter.c.
Referenced by consume_update(), and filter_frame_framed().
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Definition at line 1029 of file avfilter.c.
Referenced by filter_frame_to_filter().
int ff_filter_frame | ( | AVFilterLink * | link, |
AVFrame * | frame | ||
) |
Send a frame of data to the next filter.
link | the output link over which the data is being sent |
frame | a reference to the buffer of data being sent. The receiving filter will free this reference when it no longer needs it or pass it on to the next filter. |
Definition at line 1061 of file avfilter.c.
Referenced by activate(), addroi_filter_frame(), apply_filter(), audio_frame(), av_buffersrc_add_frame_flags(), avgblur_opencl_filter_frame(), avgblur_vulkan_filter_frame(), blend_frame(), blend_frame_for_dualinput(), blockdetect_filter_frame(), blur_frame(), blurdetect_filter_frame(), channelmap_filter_frame(), chromaber_vulkan_filter_frame(), compand_delay(), compand_drain(), compand_nodelay(), convolution_opencl_filter_frame(), create_frame(), cuda_bilateral_filter_frame(), cudachromakey_filter_frame(), cudacolorspace_filter_frame(), cudascale_filter_frame(), cudaupload_filter_frame(), ddagrab_request_frame(), decode_packet(), default_filter_frame(), deint_vaapi_filter_frame(), dnn_classify_activate(), dnn_classify_flush_frame(), dnn_detect_activate(), dnn_detect_flush_frame(), do_alphamerge(), do_blend(), do_convolve(), do_corr(), do_identity(), do_morpho(), do_psnr(), do_scale(), do_ssim(), do_ssim360(), do_vmaf(), do_xpsnr(), draw_spatial(), drawbox_vaapi_filter_frame(), end_last_frame(), extract_plane(), ff_qsvvpp_init(), ff_yadif_filter_frame(), filter(), filter_callback(), filter_frame(), filter_frame_ref(), fir_frame(), flip_bayer(), flush_frame(), forward_frame(), gblur_vulkan_filter_frame(), generate_output(), geq_filter_frame(), get_frame(), headphone_frame(), hwdownload_filter_frame(), hwmap_filter_frame(), hwupload_filter_frame(), iccdetect_filter_frame(), iccgen_filter_frame(), load_apply_palette(), misc_vaapi_filter_frame(), neighbor_opencl_filter_frame(), nlmeans_opencl_filter_frame(), nppscale_filter_frame(), nppscale_filter_frame_ref(), nppsharpen_filter_frame(), npptranspose_filter_frame(), oscilloscope_filter_frame(), output_frame(), output_single_frame(), overlay_cuda_blend(), overlay_opencl_blend(), overlay_vaapi_blend(), overlay_vulkan_blend(), pad_vaapi_filter_frame(), pixscope_filter_frame(), plot_freqs(), plot_spectrum_column(), pp_filter_frame(), procamp_vaapi_filter_frame(), process_frame(), program_opencl_run(), push_frame(), push_samples(), remap_opencl_process_frame(), request_frame(), return_frame(), scale_vaapi_filter_frame(), scale_vt_filter_frame(), scale_vulkan_filter_frame(), send_silence(), shuffleplanes_filter_frame(), sierpinski_request_frame(), source_request_frame(), testsrc_vulkan_activate(), tonemap_opencl_filter_frame(), tonemap_vaapi_filter_frame(), transpose_opencl_filter_frame(), transpose_vaapi_filter_frame(), transpose_vt_filter_frame(), try_push_frame(), unsharp_opencl_filter_frame(), varblur_frame(), video_frame(), write_frame(), xfade_activate(), xfade_frame(), and xfade_opencl_activate().
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Definition at line 1115 of file avfilter.c.
Referenced by filter_activate_default(), and take_samples().
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Definition at line 1122 of file avfilter.c.
Referenced by ff_inlink_consume_samples().
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Definition at line 1183 of file avfilter.c.
Referenced by filter_activate_default().
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Definition at line 1216 of file avfilter.c.
Referenced by filter_activate_default().
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Definition at line 1251 of file avfilter.c.
Referenced by ff_filter_activate().
int ff_filter_activate | ( | AVFilterContext * | filter | ) |
Definition at line 1421 of file avfilter.c.
Referenced by ff_filter_graph_run_once().
int ff_inlink_acknowledge_status | ( | AVFilterLink * | link, |
int * | rstatus, | ||
int64_t * | rpts | ||
) |
Test and acknowledge the change of status on the link.
Status means EOF or an error condition; a change from the normal (0) status to a non-zero status can be queued in a filter's input link, it becomes relevant after the frames queued in the link's FIFO are processed. This function tests if frames are still queued and if a queued status change has not yet been processed. In that case it performs basic treatment (updating the link's timestamp) and returns a positive value to let the filter do its own treatments (flushing...).
Filters implementing the activate callback should call this function when they think it might succeed (usually after checking unsuccessfully for a queued frame). Filters implementing the filter_frame and request_frame callbacks do not need to call that since the same treatment happens in ff_filter_frame().
[out] | rstatus | new or current status |
[out] | rpts | current timestamp of the link in link time base |
Definition at line 1437 of file avfilter.c.
Referenced by activate(), consume_from_fifos(), dnn_classify_activate(), dnn_detect_activate(), forward_frame(), generate_output(), get_frame_internal(), handle_input(), request_frame(), xfade_activate(), and xfade_opencl_activate().
size_t ff_inlink_queued_frames | ( | AVFilterLink * | link | ) |
Get the number of frames available on the link.
Definition at line 1453 of file avfilter.c.
Referenced by activate(), create_frame(), filter_frame(), filter_have_queued(), and xfade_opencl_activate().
int ff_inlink_check_available_frame | ( | AVFilterLink * | link | ) |
Test if a frame is available on the link.
Definition at line 1459 of file avfilter.c.
Referenced by activate(), ff_inlink_consume_frame(), ff_inoutlink_check_flow(), and xfade_activate().
int ff_inlink_queued_samples | ( | AVFilterLink * | link | ) |
Definition at line 1465 of file avfilter.c.
Referenced by activate(), check_ir(), convert_coeffs(), filter_frame(), plot_spectrum_column(), and try_push_frame().
int ff_inlink_check_available_samples | ( | AVFilterLink * | link, |
unsigned | min | ||
) |
Test if enough samples are available on the link.
Definition at line 1471 of file avfilter.c.
Referenced by activate(), check_ir(), and ff_inlink_consume_samples().
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Definition at line 1479 of file avfilter.c.
Referenced by ff_inlink_consume_frame(), and ff_inlink_consume_samples().
int ff_inlink_consume_frame | ( | AVFilterLink * | link, |
AVFrame ** | rframe | ||
) |
Take a frame from the link's FIFO and update the link's stats.
If ff_inlink_check_available_frame() was previously called, the preferred way of expressing it is "av_assert1(ret);" immediately after ff_inlink_consume_frame(). Negative error codes must still be checked.
Definition at line 1490 of file avfilter.c.
Referenced by activate(), consume_from_fifos(), dnn_classify_activate(), dnn_detect_activate(), filter_frame(), filter_frame_to_filter(), forward_frame(), get_frame_internal(), handle_input(), read_frame(), spatial_activate(), xfade_activate(), and xfade_opencl_activate().
int ff_inlink_consume_samples | ( | AVFilterLink * | link, |
unsigned | min, | ||
unsigned | max, | ||
AVFrame ** | rframe | ||
) |
Take samples from the link's FIFO and update the link's stats.
If ff_inlink_check_available_samples() was previously called, the preferred way of expressing it is "av_assert1(ret);" immediately after ff_inlink_consume_samples(). Negative error codes must still be checked.
Definition at line 1510 of file avfilter.c.
Referenced by activate(), convert_coeffs(), ff_inlink_consume_frame(), filter_frame_to_filter(), get_frame_internal(), and try_push_frame().
AVFrame* ff_inlink_peek_frame | ( | AVFilterLink * | link, |
size_t | idx | ||
) |
Access a frame in the link fifo without consuming it.
The first frame is numbered 0; the designated frame must exist.
Definition at line 1531 of file avfilter.c.
Referenced by activate(), xfade_activate(), and xfade_opencl_activate().
int ff_inlink_make_frame_writable | ( | AVFilterLink * | link, |
AVFrame ** | rframe | ||
) |
Make sure a frame is writable.
This is similar to av_frame_make_writable() except it uses the link's buffer allocation callback, and therefore allows direct rendering.
Definition at line 1537 of file avfilter.c.
Referenced by activate(), apply_palette(), ff_framesync_dualinput_get_writable(), filter_frame(), filter_frame_framed(), overlay_cuda_blend(), and plot_spectrum_column().
int ff_inlink_process_commands | ( | AVFilterLink * | link, |
const AVFrame * | frame | ||
) |
Process the commands queued in the link up to the time of the frame.
Commands will trigger the process_command() callback.
Definition at line 1577 of file avfilter.c.
Referenced by consume_update(), and filter_frame_framed().
void ff_inlink_request_frame | ( | AVFilterLink * | link | ) |
Mark that a frame is wanted on the link.
Unlike ff_filter_frame(), it must not be called when the link has a non-zero status, and thus does not acknowledge it. Also it cannot fail.
Definition at line 1593 of file avfilter.c.
Referenced by activate(), check_ir(), consume_from_fifos(), filter_frame(), forward_frame(), get_frame_internal(), if(), libplacebo_activate(), request_samples(), spatial_activate(), xfade_activate(), and xfade_opencl_activate().
void ff_inlink_set_status | ( | AVFilterLink * | link, |
int | status | ||
) |
Set the status on an input link.
Also discard all frames in the link's FIFO.
Definition at line 1602 of file avfilter.c.
Referenced by activate(), filter_activate_default(), if(), and xfade_activate().
int ff_outlink_get_status | ( | AVFilterLink * | link | ) |
Get the status on an output link.
Definition at line 1618 of file avfilter.c.
Referenced by activate(), create_frame(), draw_items(), filter_frame(), filter_have_eof(), and xfade_opencl_activate().
int ff_inoutlink_check_flow | ( | AVFilterLink * | inlink, |
AVFilterLink * | outlink | ||
) |
Check for flow control between input and output.
This is necessary for filters that may produce several output frames for a single input event, otherwise they may produce them all at once, causing excessive memory consumption.
Definition at line 1624 of file avfilter.c.
Referenced by activate().
int ff_filter_init_hw_frames | ( | AVFilterContext * | avctx, |
AVFilterLink * | link, | ||
int | default_pool_size | ||
) |
Perform any additional setup required for hardware frames.
link->hw_frames_ctx must be set before calling this function. Inside link->hw_frames_ctx, the fields format, sw_format, width and height must be set. If dynamically allocated pools are not supported, then initial_pool_size must also be set, to the minimum hardware frame pool size necessary for the filter to work (taking into account any frames which need to stored for use in operations as appropriate). If default_pool_size is nonzero, then it will be used as the pool size if no other modification takes place (this can be used to preserve compatibility).
Definition at line 1638 of file avfilter.c.
Referenced by config_output(), ff_vaapi_vpp_config_output(), scale_vt_config_output(), and transpose_vt_recreate_hw_ctx().
int ff_outlink_frame_wanted | ( | AVFilterLink * | link | ) |
Test if a frame is wanted on an output link.
Definition at line 1660 of file avfilter.c.
Referenced by ff_inoutlink_check_flow().
int ff_filter_execute | ( | AVFilterContext * | ctx, |
avfilter_action_func * | func, | ||
void * | arg, | ||
int * | ret, | ||
int | nb_jobs | ||
) |
Definition at line 1666 of file avfilter.c.
Referenced by activate(), analyze_frame(), apply_unsharp(), blend_frame(), blend_frames(), blur_frame(), chromatic_adaptation(), compute_vif2(), config_output(), convert_frame(), do_blend(), do_convolve(), do_corr(), do_identity(), do_morpho(), do_psnr(), do_ssim(), draw_sierpinski(), filter(), filter_frame(), filter_grey_edge(), fir_frame(), gaussianiir2d(), geq_filter_frame(), get_deriv(), get_frame(), headphone_frame(), nlmeans_plane(), output_frame(), plot_spectrum_column(), prepare_impulse(), prepare_secondary(), process_frame(), scroll(), spatial_activate(), and xfade_frame().
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static |
Definition at line 545 of file avfilter.c.
Referenced by set_enable_expr().
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static |
Definition at line 662 of file avfilter.c.
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static |
Definition at line 675 of file avfilter.c.
Referenced by avfilter_get_class(), and ff_filter_alloc().