mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
89 lines
3.0 KiB
89 lines
3.0 KiB
/* |
|
* This file is part of Libav. |
|
* |
|
* Libav is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* Libav is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with Libav; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#ifndef AVFILTER_INTERNAL_H |
|
#define AVFILTER_INTERNAL_H |
|
|
|
/** |
|
* @file |
|
* internal API functions |
|
*/ |
|
|
|
#include "avfilter.h" |
|
|
|
/** default handler for freeing audio/video buffer when there are no references left */ |
|
void ff_avfilter_default_free_buffer(AVFilterBuffer *buf); |
|
|
|
/** Tell is a format is contained in the provided list terminated by -1. */ |
|
int ff_fmt_is_in(int fmt, const int *fmts); |
|
|
|
#define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func) |
|
|
|
void ff_dlog_link(void *ctx, AVFilterLink *link, int end); |
|
|
|
/** |
|
* Insert a new pad. |
|
* |
|
* @param idx Insertion point. Pad is inserted at the end if this point |
|
* is beyond the end of the list of pads. |
|
* @param count Pointer to the number of pads in the list |
|
* @param padidx_off Offset within an AVFilterLink structure to the element |
|
* to increment when inserting a new pad causes link |
|
* numbering to change |
|
* @param pads Pointer to the pointer to the beginning of the list of pads |
|
* @param links Pointer to the pointer to the beginning of the list of links |
|
* @param newpad The new pad to add. A copy is made when adding. |
|
*/ |
|
void ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off, |
|
AVFilterPad **pads, AVFilterLink ***links, |
|
AVFilterPad *newpad); |
|
|
|
/** Insert a new input pad for the filter. */ |
|
static inline void ff_insert_inpad(AVFilterContext *f, unsigned index, |
|
AVFilterPad *p) |
|
{ |
|
ff_insert_pad(index, &f->input_count, offsetof(AVFilterLink, dstpad), |
|
&f->input_pads, &f->inputs, p); |
|
} |
|
|
|
/** Insert a new output pad for the filter. */ |
|
static inline void ff_insert_outpad(AVFilterContext *f, unsigned index, |
|
AVFilterPad *p) |
|
{ |
|
ff_insert_pad(index, &f->output_count, offsetof(AVFilterLink, srcpad), |
|
&f->output_pads, &f->outputs, p); |
|
} |
|
|
|
/** |
|
* Poll a frame from the filter chain. |
|
* |
|
* @param link the input link |
|
* @return the number of immediately available frames, a negative |
|
* number in case of error |
|
*/ |
|
int ff_poll_frame(AVFilterLink *link); |
|
|
|
/** |
|
* Request an input frame from the filter at the other end of the link. |
|
* |
|
* @param link the input link |
|
* @return zero on success |
|
*/ |
|
int ff_request_frame(AVFilterLink *link); |
|
|
|
#endif /* AVFILTER_INTERNAL_H */
|
|
|