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avcodec/amfdec,rkmppdec: Use correct extradata with BSFs

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Otherwise the extradata used would be ISOBMFF if the input is
even though we use the *_mp4toannexb BSFs to convert it to
annex B to feed it to the actual decoder.

(The mediacodec decoders also use said BSFs, yet they process
the extradata in a way that works even when using the ISOBMFF
extradata; in fact, using the converted extradata would break
their check for whether to warn for missing extradata for
the ISOBMFF without-in-band-header profiles.

Furthermore, there are several users of the *_mp4toannexb BSFs
that don't ever touch extradata. They have not been touched.)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-06-11 15:53:18 +02:00
parent 9102a90a95
commit ecd7c9244d
3 changed files with 54 additions and 5 deletions
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42
libavcodec/decode_bsf.h Normal file
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/*
* 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
*/
#ifndef AVCODEC_DECODE_BSF_H
#define AVCODEC_DECODE_BSF_H
#include <stdint.h>
#include "avcodec.h"
#include "bsf.h"
#include "internal.h"
/**
* Helper function for decoders that may use a BSF that changes extradata.
* This function will get the extradata from the BSF.
*/
static inline void ff_decode_get_extradata(const AVCodecContext *avctx,
const uint8_t **extradata,
int *extradata_size)
{
// Given that we unconditionally insert a null BSF when no BSF is
// explicitly requested, we can just use the BSF's par_out here.
*extradata = avctx->internal->bsf->par_out->extradata;
*extradata_size = avctx->internal->bsf->par_out->extradata_size;
}
#endif /* AVCODEC_DECODE_BSF_H */