mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
b800327f4c
This commit does for AVInputFormat what commit59c9dc82f4did for AVOutputFormat: It adds a new type FFInputFormat, moves all the internals of AVInputFormat to it and adds a now reduced AVInputFormat as first member. This does not affect/improve extensibility of both public or private fields for demuxers (it is still a mess due to lavd). This is possible since50f34172e0(which removed the last usage of an internal field of AVInputFormat in fftools). (Hint: tools/probetest.c accesses the internals of FFInputFormat as well, but given that it is a testing tool this is not considered a problem.) Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "internal.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavformat/avformat.h"
|
|
#include "libavformat/demux.h"
|
|
|
|
int ff_alloc_input_device_context(AVFormatContext **avctx, const AVInputFormat *iformat, const char *format)
|
|
{
|
|
AVFormatContext *s;
|
|
int ret = 0;
|
|
|
|
*avctx = NULL;
|
|
if (!iformat && !format)
|
|
return AVERROR(EINVAL);
|
|
if (!(s = avformat_alloc_context()))
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (!iformat)
|
|
iformat = av_find_input_format(format);
|
|
if (!iformat || !iformat->priv_class || !AV_IS_INPUT_DEVICE(iformat->priv_class->category)) {
|
|
ret = AVERROR(EINVAL);
|
|
goto error;
|
|
}
|
|
s->iformat = iformat;
|
|
if (ffifmt(s->iformat)->priv_data_size > 0) {
|
|
s->priv_data = av_mallocz(ffifmt(s->iformat)->priv_data_size);
|
|
if (!s->priv_data) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto error;
|
|
}
|
|
if (s->iformat->priv_class) {
|
|
*(const AVClass**)s->priv_data= s->iformat->priv_class;
|
|
av_opt_set_defaults(s->priv_data);
|
|
}
|
|
} else
|
|
s->priv_data = NULL;
|
|
|
|
*avctx = s;
|
|
return 0;
|
|
error:
|
|
avformat_free_context(s);
|
|
return ret;
|
|
}
|