Libav
internal.h
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1 /*
2  * This file is part of Libav.
3  *
4  * Libav is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
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8  *
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12  * Lesser General Public License for more details.
13  *
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15  * License along with Libav; if not, write to the Free Software
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17  */
18 
19 #ifndef AVFILTER_INTERNAL_H
20 #define AVFILTER_INTERNAL_H
21 
27 #include "libavutil/internal.h"
28 #include "avfilter.h"
29 #include "thread.h"
30 #include "version.h"
31 
32 #if !FF_API_AVFILTERPAD_PUBLIC
33 
36 struct AVFilterPad {
42  const char *name;
43 
47  enum AVMediaType type;
48 
55  AVFrame *(*get_video_buffer)(AVFilterLink *link, int w, int h);
56 
63  AVFrame *(*get_audio_buffer)(AVFilterLink *link, int nb_samples);
64 
75  int (*filter_frame)(AVFilterLink *link, AVFrame *frame);
76 
86  int (*poll_frame)(AVFilterLink *link);
87 
95  int (*request_frame)(AVFilterLink *link);
96 
111  int (*config_props)(AVFilterLink *link);
112 
119  int needs_fifo;
120 
127  int needs_writable;
128 };
129 #endif
130 
132  void *thread;
134 };
135 
138 };
139 
140 #if FF_API_AVFILTERBUFFER
141 
142 void ff_avfilter_default_free_buffer(AVFilterBuffer *buf);
143 #endif
144 
146 int ff_fmt_is_in(int fmt, const int *fmts);
147 
148 #define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func)
149 
150 void ff_dlog_link(void *ctx, AVFilterLink *link, int end);
151 
165 void ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
166  AVFilterPad **pads, AVFilterLink ***links,
167  AVFilterPad *newpad);
168 
170 static inline void ff_insert_inpad(AVFilterContext *f, unsigned index,
171  AVFilterPad *p)
172 {
173  ff_insert_pad(index, &f->nb_inputs, offsetof(AVFilterLink, dstpad),
174  &f->input_pads, &f->inputs, p);
175 #if FF_API_FOO_COUNT
177  f->input_count = f->nb_inputs;
179 #endif
180 }
181 
183 static inline void ff_insert_outpad(AVFilterContext *f, unsigned index,
184  AVFilterPad *p)
185 {
186  ff_insert_pad(index, &f->nb_outputs, offsetof(AVFilterLink, srcpad),
187  &f->output_pads, &f->outputs, p);
188 #if FF_API_FOO_COUNT
190  f->output_count = f->nb_outputs;
192 #endif
193 }
194 
202 int ff_poll_frame(AVFilterLink *link);
203 
210 int ff_request_frame(AVFilterLink *link);
211 
223 int ff_filter_frame(AVFilterLink *link, AVFrame *frame);
224 
233 AVFilterContext *ff_filter_alloc(const AVFilter *filter, const char *inst_name);
234 
239 
240 #endif /* AVFILTER_INTERNAL_H */
This structure describes decoded (raw) audio or video data.
Definition: frame.h:135
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:728
Libavfilter version macros.
int ff_fmt_is_in(int fmt, const int *fmts)
Tell is a format is contained in the provided list terminated by -1.
Definition: formats.c:154
int( avfilter_execute_func)(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
A function executing multiple jobs, possibly in parallel.
Definition: avfilter.h:937
static int poll_frame(AVFilterLink *link)
Definition: buffersrc.c:436
const char * name
void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
Definition: avfilter.c:220
unsigned nb_outputs
number of output pads
Definition: avfilter.h:582
void ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off, AVFilterPad **pads, AVFilterLink ***links, AVFilterPad *newpad)
Insert a new pad.
Definition: avfilter.c:54
static int config_props(AVFilterLink *link)
Definition: af_asyncts.c:90
common internal API header
static void filter(MpegAudioContext *s, int ch, const short *samples, int incr)
Definition: mpegaudioenc.c:307
unsigned nb_inputs
number of input pads
Definition: avfilter.h:575
static void ff_insert_outpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new output pad for the filter.
Definition: internal.h:183
Main libavfilter public API header.
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:578
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:570
void ff_filter_graph_remove_filter(AVFilterGraph *graph, AVFilterContext *filter)
Remove a filter from a graph;.
Definition: avfiltergraph.c:89
Filter definition.
Definition: avfilter.h:421
int index
Definition: gxfenc.c:72
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:571
AVMediaType
Definition: avutil.h:185
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
Definition: af_amix.c:459
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:76
static int request_frame(AVFilterLink *outlink)
Definition: af_amix.c:392
void ff_avfilter_default_free_buffer(AVFilterBuffer *buf)
default handler for freeing audio/video buffer when there are no references left
Definition: buffer.c:30
avfilter_execute_func * execute
Definition: internal.h:137
struct AVFilterPad AVFilterPad
Definition: avfilter.h:67
avfilter_execute_func * thread_execute
Definition: internal.h:133
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:77
AVFilterPad * output_pads
array of output pads
Definition: avfilter.h:577
static void ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new input pad for the filter.
Definition: internal.h:170
An instance of a filter.
Definition: avfilter.h:563
int ff_poll_frame(AVFilterLink *link)
Poll a frame from the filter chain.
Definition: avfilter.c:255
AVFilterContext * ff_filter_alloc(const AVFilter *filter, const char *inst_name)
Allocate a new filter context and return it.
Definition: avfilter.c:390
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
Definition: avfilter.c:244