2008-02-10 18:02:11 +00:00
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/*
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|
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* Filter layer - format negotiation
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2010-11-28 10:22:58 +00:00
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* Copyright (c) 2007 Bobby Bingham
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2008-02-10 18:02:11 +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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2008-02-10 18:02:11 +00:00
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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
|
2008-02-10 18:02:11 +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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*
|
2011-03-18 17:35:10 +00:00
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* Libav is distributed in the hope that it will be useful,
|
2008-02-10 18:02:11 +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
|
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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2008-02-10 18:02:11 +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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2012-08-06 13:49:32 +00:00
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#include "libavutil/common.h"
|
2010-01-04 00:08:11 +00:00
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|
|
#include "libavutil/pixdesc.h"
|
2008-02-10 18:02:11 +00:00
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|
|
#include "avfilter.h"
|
2011-05-28 19:51:03 +00:00
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|
|
#include "internal.h"
|
2012-05-06 04:59:06 +00:00
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|
#include "formats.h"
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2008-02-10 18:02:11 +00:00
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|
2008-02-21 22:10:11 +00:00
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|
|
/**
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|
|
|
* Add all refs from a to ret and destroy a.
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|
|
*/
|
2012-05-06 04:59:06 +00:00
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|
|
#define MERGE_REF(ret, a, fmts, type, fail) \
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|
|
do { \
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|
|
|
type ***tmp; \
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|
|
|
int i; \
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|
|
|
\
|
|
|
|
if (!(tmp = av_realloc(ret->refs, \
|
|
|
|
sizeof(*tmp) * (ret->refcount + a->refcount)))) \
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|
goto fail; \
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|
|
ret->refs = tmp; \
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|
|
\
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|
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|
for (i = 0; i < a->refcount; i ++) { \
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|
|
ret->refs[ret->refcount] = a->refs[i]; \
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|
|
*ret->refs[ret->refcount++] = ret; \
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|
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|
} \
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\
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|
av_freep(&a->refs); \
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av_freep(&a->fmts); \
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av_freep(&a); \
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} while (0)
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2008-02-10 18:04:55 +00:00
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2012-05-06 04:59:06 +00:00
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/**
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* Add all formats common for a and b to ret, copy the refs and destroy
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* a and b.
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|
*/
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|
#define MERGE_FORMATS(ret, a, b, fmts, nb, type, fail) \
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do { \
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int i, j, k = 0, count = FFMIN(a->nb, b->nb); \
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|
\
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if (!(ret = av_mallocz(sizeof(*ret)))) \
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goto fail; \
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\
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if (count) { \
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if (!(ret->fmts = av_malloc(sizeof(*ret->fmts) * count))) \
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goto fail; \
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for (i = 0; i < a->nb; i++) \
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for (j = 0; j < b->nb; j++) \
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if (a->fmts[i] == b->fmts[j]) \
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ret->fmts[k++] = a->fmts[i]; \
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\
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ret->nb = k; \
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|
} \
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/* check that there was at least one common format */ \
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if (!ret->nb) \
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goto fail; \
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\
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MERGE_REF(ret, a, fmts, type, fail); \
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MERGE_REF(ret, b, fmts, type, fail); \
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|
} while (0)
|
2008-02-10 18:04:52 +00:00
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|
2012-05-30 08:12:55 +00:00
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AVFilterFormats *ff_merge_formats(AVFilterFormats *a, AVFilterFormats *b)
|
2008-02-10 18:02:11 +00:00
|
|
|
{
|
2012-05-06 04:59:06 +00:00
|
|
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AVFilterFormats *ret = NULL;
|
2008-02-10 18:02:11 +00:00
|
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|
|
2011-06-08 16:24:25 +00:00
|
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if (a == b)
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|
return a;
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|
|
2012-05-06 04:59:06 +00:00
|
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MERGE_FORMATS(ret, a, b, formats, format_count, AVFilterFormats, fail);
|
2008-02-10 18:02:11 +00:00
|
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|
2012-05-06 04:59:06 +00:00
|
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|
return ret;
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fail:
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|
|
|
if (ret) {
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|
|
|
av_freep(&ret->refs);
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|
av_freep(&ret->formats);
|
2011-10-29 23:17:27 +00:00
|
|
|
}
|
2012-05-06 04:59:06 +00:00
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|
av_freep(&ret);
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|
return NULL;
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|
|
|
}
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|
|
|
|
|
AVFilterFormats *ff_merge_samplerates(AVFilterFormats *a,
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|
AVFilterFormats *b)
|
|
|
|
{
|
|
|
|
AVFilterFormats *ret = NULL;
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|
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|
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if (a == b) return a;
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|
|
|
|
|
if (a->format_count && b->format_count) {
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|
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MERGE_FORMATS(ret, a, b, formats, format_count, AVFilterFormats, fail);
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|
|
} else if (a->format_count) {
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MERGE_REF(a, b, formats, AVFilterFormats, fail);
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ret = a;
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} else {
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MERGE_REF(b, a, formats, AVFilterFormats, fail);
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|
ret = b;
|
2008-02-10 18:02:11 +00:00
|
|
|
}
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|
2012-05-06 04:59:06 +00:00
|
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|
return ret;
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|
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|
fail:
|
|
|
|
if (ret) {
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|
av_freep(&ret->refs);
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av_freep(&ret->formats);
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|
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|
}
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|
av_freep(&ret);
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|
return NULL;
|
|
|
|
}
|
2008-02-10 18:04:52 +00:00
|
|
|
|
2012-05-06 04:59:06 +00:00
|
|
|
AVFilterChannelLayouts *ff_merge_channel_layouts(AVFilterChannelLayouts *a,
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|
AVFilterChannelLayouts *b)
|
|
|
|
{
|
|
|
|
AVFilterChannelLayouts *ret = NULL;
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|
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|
|
|
|
if (a == b) return a;
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|
|
|
|
|
|
if (a->nb_channel_layouts && b->nb_channel_layouts) {
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|
|
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MERGE_FORMATS(ret, a, b, channel_layouts, nb_channel_layouts,
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|
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|
AVFilterChannelLayouts, fail);
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|
|
|
} else if (a->nb_channel_layouts) {
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|
MERGE_REF(a, b, channel_layouts, AVFilterChannelLayouts, fail);
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|
ret = a;
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|
|
|
} else {
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|
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MERGE_REF(b, a, channel_layouts, AVFilterChannelLayouts, fail);
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|
ret = b;
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|
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}
|
2008-02-10 18:02:11 +00:00
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return ret;
|
2012-05-06 04:59:06 +00:00
|
|
|
fail:
|
|
|
|
if (ret) {
|
|
|
|
av_freep(&ret->refs);
|
|
|
|
av_freep(&ret->channel_layouts);
|
|
|
|
}
|
|
|
|
av_freep(&ret);
|
|
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|
return NULL;
|
2008-02-10 18:02:11 +00:00
|
|
|
}
|
|
|
|
|
2011-05-28 19:51:03 +00:00
|
|
|
int ff_fmt_is_in(int fmt, const int *fmts)
|
|
|
|
{
|
|
|
|
const int *p;
|
|
|
|
|
2012-10-06 10:10:34 +00:00
|
|
|
for (p = fmts; *p != AV_PIX_FMT_NONE; p++) {
|
2011-05-28 19:51:03 +00:00
|
|
|
if (fmt == *p)
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|
return 1;
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|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-05-30 08:12:55 +00:00
|
|
|
AVFilterFormats *ff_make_format_list(const int *fmts)
|
2009-10-18 23:06:52 +00:00
|
|
|
{
|
|
|
|
AVFilterFormats *formats;
|
|
|
|
int count;
|
|
|
|
|
2010-07-22 11:12:47 +00:00
|
|
|
for (count = 0; fmts[count] != -1; count++)
|
2009-10-18 23:06:52 +00:00
|
|
|
;
|
|
|
|
|
2012-05-04 07:49:28 +00:00
|
|
|
formats = av_mallocz(sizeof(*formats));
|
2011-10-29 23:17:27 +00:00
|
|
|
if (count)
|
2011-11-05 14:01:39 +00:00
|
|
|
formats->formats = av_malloc(sizeof(*formats->formats) * count);
|
2009-10-18 23:06:52 +00:00
|
|
|
formats->format_count = count;
|
2010-07-22 11:12:47 +00:00
|
|
|
memcpy(formats->formats, fmts, sizeof(*formats->formats) * count);
|
2009-10-18 23:06:52 +00:00
|
|
|
|
|
|
|
return formats;
|
|
|
|
}
|
|
|
|
|
2012-05-06 04:59:06 +00:00
|
|
|
#define ADD_FORMAT(f, fmt, type, list, nb) \
|
|
|
|
do { \
|
|
|
|
type *fmts; \
|
|
|
|
\
|
|
|
|
if (!(*f) && !(*f = av_mallocz(sizeof(**f)))) \
|
|
|
|
return AVERROR(ENOMEM); \
|
|
|
|
\
|
|
|
|
fmts = av_realloc((*f)->list, \
|
|
|
|
sizeof(*(*f)->list) * ((*f)->nb + 1));\
|
|
|
|
if (!fmts) \
|
|
|
|
return AVERROR(ENOMEM); \
|
|
|
|
\
|
|
|
|
(*f)->list = fmts; \
|
|
|
|
(*f)->list[(*f)->nb++] = fmt; \
|
|
|
|
return 0; \
|
|
|
|
} while (0)
|
|
|
|
|
2012-05-30 08:12:55 +00:00
|
|
|
int ff_add_format(AVFilterFormats **avff, int fmt)
|
2010-01-03 22:26:59 +00:00
|
|
|
{
|
2012-05-06 04:59:06 +00:00
|
|
|
ADD_FORMAT(avff, fmt, int, formats, format_count);
|
|
|
|
}
|
2010-01-03 22:26:59 +00:00
|
|
|
|
2012-05-06 04:59:06 +00:00
|
|
|
int ff_add_channel_layout(AVFilterChannelLayouts **l, uint64_t channel_layout)
|
|
|
|
{
|
|
|
|
ADD_FORMAT(l, channel_layout, uint64_t, channel_layouts, nb_channel_layouts);
|
2010-01-03 22:26:59 +00:00
|
|
|
}
|
|
|
|
|
2012-05-30 08:12:55 +00:00
|
|
|
AVFilterFormats *ff_all_formats(enum AVMediaType type)
|
2008-02-10 18:02:11 +00:00
|
|
|
{
|
2010-01-06 16:19:13 +00:00
|
|
|
AVFilterFormats *ret = NULL;
|
2010-07-22 11:12:47 +00:00
|
|
|
int fmt;
|
2012-10-06 10:10:34 +00:00
|
|
|
int num_formats = type == AVMEDIA_TYPE_VIDEO ? AV_PIX_FMT_NB :
|
2010-11-12 11:04:40 +00:00
|
|
|
type == AVMEDIA_TYPE_AUDIO ? AV_SAMPLE_FMT_NB : 0;
|
2008-02-10 18:04:49 +00:00
|
|
|
|
2012-10-06 11:29:37 +00:00
|
|
|
for (fmt = 0; fmt < num_formats; fmt++) {
|
|
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
|
2010-07-22 11:12:47 +00:00
|
|
|
if ((type != AVMEDIA_TYPE_VIDEO) ||
|
2013-05-12 13:41:49 +00:00
|
|
|
(type == AVMEDIA_TYPE_VIDEO && !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)))
|
2012-05-30 08:12:55 +00:00
|
|
|
ff_add_format(&ret, fmt);
|
2012-10-06 11:29:37 +00:00
|
|
|
}
|
2008-02-10 18:04:49 +00:00
|
|
|
|
|
|
|
return ret;
|
2008-02-10 18:02:11 +00:00
|
|
|
}
|
|
|
|
|
2012-05-30 11:59:30 +00:00
|
|
|
AVFilterFormats *ff_planar_sample_fmts(void)
|
|
|
|
{
|
|
|
|
AVFilterFormats *ret = NULL;
|
|
|
|
int fmt;
|
|
|
|
|
|
|
|
for (fmt = 0; fmt < AV_SAMPLE_FMT_NB; fmt++)
|
|
|
|
if (av_sample_fmt_is_planar(fmt))
|
|
|
|
ff_add_format(&ret, fmt);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-05-06 04:59:06 +00:00
|
|
|
AVFilterFormats *ff_all_samplerates(void)
|
2008-02-10 18:02:11 +00:00
|
|
|
{
|
2012-05-06 04:59:06 +00:00
|
|
|
AVFilterFormats *ret = av_mallocz(sizeof(*ret));
|
|
|
|
return ret;
|
2008-02-10 18:02:11 +00:00
|
|
|
}
|
|
|
|
|
2012-05-06 04:59:06 +00:00
|
|
|
AVFilterChannelLayouts *ff_all_channel_layouts(void)
|
2008-02-10 18:03:18 +00:00
|
|
|
{
|
2012-05-06 04:59:06 +00:00
|
|
|
AVFilterChannelLayouts *ret = av_mallocz(sizeof(*ret));
|
|
|
|
return ret;
|
2008-02-10 18:03:18 +00:00
|
|
|
}
|
|
|
|
|
2012-05-06 04:59:06 +00:00
|
|
|
#define FORMATS_REF(f, ref) \
|
|
|
|
do { \
|
|
|
|
*ref = f; \
|
|
|
|
f->refs = av_realloc(f->refs, sizeof(*f->refs) * ++f->refcount); \
|
|
|
|
f->refs[f->refcount-1] = ref; \
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
void ff_channel_layouts_ref(AVFilterChannelLayouts *f, AVFilterChannelLayouts **ref)
|
2008-02-10 18:02:11 +00:00
|
|
|
{
|
2012-05-06 04:59:06 +00:00
|
|
|
FORMATS_REF(f, ref);
|
|
|
|
}
|
2010-01-08 08:19:18 +00:00
|
|
|
|
2012-05-30 08:12:55 +00:00
|
|
|
void ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
|
2012-05-06 04:59:06 +00:00
|
|
|
{
|
|
|
|
FORMATS_REF(f, ref);
|
|
|
|
}
|
2010-01-07 22:59:22 +00:00
|
|
|
|
2012-05-06 04:59:06 +00:00
|
|
|
#define FIND_REF_INDEX(ref, idx) \
|
|
|
|
do { \
|
|
|
|
int i; \
|
|
|
|
for (i = 0; i < (*ref)->refcount; i ++) \
|
|
|
|
if((*ref)->refs[i] == ref) { \
|
|
|
|
idx = i; \
|
|
|
|
break; \
|
|
|
|
} \
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
#define FORMATS_UNREF(ref, list) \
|
|
|
|
do { \
|
|
|
|
int idx = -1; \
|
|
|
|
\
|
|
|
|
if (!*ref) \
|
|
|
|
return; \
|
|
|
|
\
|
|
|
|
FIND_REF_INDEX(ref, idx); \
|
|
|
|
\
|
|
|
|
if (idx >= 0) \
|
|
|
|
memmove((*ref)->refs + idx, (*ref)->refs + idx + 1, \
|
|
|
|
sizeof(*(*ref)->refs) * ((*ref)->refcount - idx - 1)); \
|
|
|
|
\
|
|
|
|
if(!--(*ref)->refcount) { \
|
|
|
|
av_free((*ref)->list); \
|
|
|
|
av_free((*ref)->refs); \
|
|
|
|
av_free(*ref); \
|
|
|
|
} \
|
|
|
|
*ref = NULL; \
|
|
|
|
} while (0)
|
2008-02-10 18:03:18 +00:00
|
|
|
|
2012-05-30 08:12:55 +00:00
|
|
|
void ff_formats_unref(AVFilterFormats **ref)
|
2012-05-06 04:59:06 +00:00
|
|
|
{
|
|
|
|
FORMATS_UNREF(ref, formats);
|
|
|
|
}
|
2008-02-10 18:03:18 +00:00
|
|
|
|
2012-05-06 04:59:06 +00:00
|
|
|
void ff_channel_layouts_unref(AVFilterChannelLayouts **ref)
|
|
|
|
{
|
|
|
|
FORMATS_UNREF(ref, channel_layouts);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define FORMATS_CHANGEREF(oldref, newref) \
|
|
|
|
do { \
|
|
|
|
int idx = -1; \
|
|
|
|
\
|
|
|
|
FIND_REF_INDEX(oldref, idx); \
|
|
|
|
\
|
|
|
|
if (idx >= 0) { \
|
|
|
|
(*oldref)->refs[idx] = newref; \
|
|
|
|
*newref = *oldref; \
|
|
|
|
*oldref = NULL; \
|
|
|
|
} \
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
void ff_channel_layouts_changeref(AVFilterChannelLayouts **oldref,
|
|
|
|
AVFilterChannelLayouts **newref)
|
|
|
|
{
|
|
|
|
FORMATS_CHANGEREF(oldref, newref);
|
2008-02-10 18:02:11 +00:00
|
|
|
}
|
|
|
|
|
2012-05-30 08:12:55 +00:00
|
|
|
void ff_formats_changeref(AVFilterFormats **oldref, AVFilterFormats **newref)
|
2008-02-10 18:04:32 +00:00
|
|
|
{
|
2012-05-06 04:59:06 +00:00
|
|
|
FORMATS_CHANGEREF(oldref, newref);
|
2008-02-10 18:04:32 +00:00
|
|
|
}
|
2012-05-10 05:41:16 +00:00
|
|
|
|
|
|
|
#define SET_COMMON_FORMATS(ctx, fmts, in_fmts, out_fmts, ref, list) \
|
|
|
|
{ \
|
|
|
|
int count = 0, i; \
|
|
|
|
\
|
2012-06-12 19:25:10 +00:00
|
|
|
for (i = 0; i < ctx->nb_inputs; i++) { \
|
2012-05-10 05:41:16 +00:00
|
|
|
if (ctx->inputs[i]) { \
|
|
|
|
ref(fmts, &ctx->inputs[i]->out_fmts); \
|
|
|
|
count++; \
|
|
|
|
} \
|
|
|
|
} \
|
2012-06-12 19:25:10 +00:00
|
|
|
for (i = 0; i < ctx->nb_outputs; i++) { \
|
2012-05-10 05:41:16 +00:00
|
|
|
if (ctx->outputs[i]) { \
|
|
|
|
ref(fmts, &ctx->outputs[i]->in_fmts); \
|
|
|
|
count++; \
|
|
|
|
} \
|
|
|
|
} \
|
|
|
|
\
|
|
|
|
if (!count) { \
|
|
|
|
av_freep(&fmts->list); \
|
|
|
|
av_freep(&fmts->refs); \
|
|
|
|
av_freep(&fmts); \
|
|
|
|
} \
|
|
|
|
}
|
|
|
|
|
|
|
|
void ff_set_common_channel_layouts(AVFilterContext *ctx,
|
|
|
|
AVFilterChannelLayouts *layouts)
|
|
|
|
{
|
|
|
|
SET_COMMON_FORMATS(ctx, layouts, in_channel_layouts, out_channel_layouts,
|
|
|
|
ff_channel_layouts_ref, channel_layouts);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ff_set_common_samplerates(AVFilterContext *ctx,
|
|
|
|
AVFilterFormats *samplerates)
|
|
|
|
{
|
|
|
|
SET_COMMON_FORMATS(ctx, samplerates, in_samplerates, out_samplerates,
|
2012-05-30 08:12:55 +00:00
|
|
|
ff_formats_ref, formats);
|
2012-05-10 05:41:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* A helper for query_formats() which sets all links to the same list of
|
|
|
|
* formats. If there are no links hooked to this filter, the list of formats is
|
|
|
|
* freed.
|
|
|
|
*/
|
2012-05-30 08:12:55 +00:00
|
|
|
void ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
|
2012-05-10 05:41:16 +00:00
|
|
|
{
|
|
|
|
SET_COMMON_FORMATS(ctx, formats, in_formats, out_formats,
|
2012-05-30 08:12:55 +00:00
|
|
|
ff_formats_ref, formats);
|
2012-05-10 05:41:16 +00:00
|
|
|
}
|
|
|
|
|
2012-05-19 08:37:56 +00:00
|
|
|
int ff_default_query_formats(AVFilterContext *ctx)
|
2012-05-10 05:41:16 +00:00
|
|
|
{
|
|
|
|
enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type :
|
|
|
|
ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type :
|
|
|
|
AVMEDIA_TYPE_VIDEO;
|
|
|
|
|
2012-05-30 08:12:55 +00:00
|
|
|
ff_set_common_formats(ctx, ff_all_formats(type));
|
2012-05-10 05:41:16 +00:00
|
|
|
if (type == AVMEDIA_TYPE_AUDIO) {
|
|
|
|
ff_set_common_channel_layouts(ctx, ff_all_channel_layouts());
|
|
|
|
ff_set_common_samplerates(ctx, ff_all_samplerates());
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|