2010-07-18 22:37:39 +00:00
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/*
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2011-03-18 17:35:10 +00:00
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* This file is part of Libav.
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2010-07-18 22:37:39 +00:00
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*
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2011-03-18 17:35:10 +00:00
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* Libav is free software; you can redistribute it and/or
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2010-07-18 22:37:39 +00:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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2011-03-18 17:35:10 +00:00
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* Libav is distributed in the hope that it will be useful,
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2010-07-18 22:37:39 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2011-03-18 17:35:10 +00:00
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* License along with Libav; if not, write to the Free Software
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2010-07-18 22:37:39 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFILTER_INTERNAL_H
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#define AVFILTER_INTERNAL_H
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/**
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* @file
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* internal API functions
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*/
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#include "avfilter.h"
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2010-11-13 00:21:28 +00:00
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2010-11-25 20:50:23 +00:00
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/** default handler for freeing audio/video buffer when there are no references left */
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void ff_avfilter_default_free_buffer(AVFilterBuffer *buf);
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2011-05-28 19:51:03 +00:00
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/** Tell is a format is contained in the provided list terminated by -1. */
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int ff_fmt_is_in(int fmt, const int *fmts);
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2012-05-07 09:21:38 +00:00
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#define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func)
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void ff_dlog_link(void *ctx, AVFilterLink *link, int end);
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2012-05-30 08:31:48 +00:00
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/**
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* Insert a new pad.
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*
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* @param idx Insertion point. Pad is inserted at the end if this point
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* is beyond the end of the list of pads.
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* @param count Pointer to the number of pads in the list
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* @param padidx_off Offset within an AVFilterLink structure to the element
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* to increment when inserting a new pad causes link
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* numbering to change
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* @param pads Pointer to the pointer to the beginning of the list of pads
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* @param links Pointer to the pointer to the beginning of the list of links
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* @param newpad The new pad to add. A copy is made when adding.
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*/
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void ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
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AVFilterPad **pads, AVFilterLink ***links,
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AVFilterPad *newpad);
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/** Insert a new input pad for the filter. */
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static inline void ff_insert_inpad(AVFilterContext *f, unsigned index,
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AVFilterPad *p)
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{
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ff_insert_pad(index, &f->input_count, offsetof(AVFilterLink, dstpad),
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&f->input_pads, &f->inputs, p);
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}
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/** Insert a new output pad for the filter. */
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static inline void ff_insert_outpad(AVFilterContext *f, unsigned index,
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AVFilterPad *p)
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{
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ff_insert_pad(index, &f->output_count, offsetof(AVFilterLink, srcpad),
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&f->output_pads, &f->outputs, p);
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}
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2012-05-30 09:20:32 +00:00
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/**
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* Poll a frame from the filter chain.
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*
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* @param link the input link
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* @return the number of immediately available frames, a negative
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* number in case of error
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*/
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int ff_poll_frame(AVFilterLink *link);
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/**
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* Request an input frame from the filter at the other end of the link.
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*
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* @param link the input link
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* @return zero on success
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*/
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int ff_request_frame(AVFilterLink *link);
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2011-05-17 14:58:04 +00:00
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#endif /* AVFILTER_INTERNAL_H */
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