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For all encoders and all decoders except MPEG-4 the unquantize functions to use don't change at all and therefore needn't be kept in the context. So discard them after setting them; for MPEG-4, the functions get assigned on a per-frame basis. Decoders not using any unquantize functions (H.261, MPEG-1/2) as well as decoders that only call ff_mpv_reconstruct_mb() through error resilience (RV30/40, the VC-1 family) don't have the remaining pointers set at all. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
63 lines
2.7 KiB
C
63 lines
2.7 KiB
C
/*
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* Unquantize functions for mpegvideo
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* Copyright (c) 2000,2001 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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*
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* 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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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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* FFmpeg is distributed in the hope that it will be useful,
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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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* License along with FFmpeg; if not, write to the Free Software
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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 AVCODEC_MPEGVIDEO_UNQUANTIZE_H
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#define AVCODEC_MPEGVIDEO_UNQUANTIZE_H
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#include <stdint.h>
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#include "config.h"
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typedef struct MpegEncContext MpegEncContext;
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typedef struct MPVUnquantDSPContext {
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void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
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int16_t *block/*align 16*/, int n, int qscale);
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void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
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int16_t *block/*align 16*/, int n, int qscale);
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void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
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int16_t *block/*align 16*/, int n, int qscale);
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void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
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int16_t *block/*align 16*/, int n, int qscale);
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void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
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int16_t *block/*align 16*/, int n, int qscale);
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void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
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int16_t *block/*align 16*/, int n, int qscale);
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} MPVUnquantDSPContext;
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#if !ARCH_MIPS
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#define ff_mpv_unquantize_init(s, bitexact, q_scale_type) ff_mpv_unquantize_init(s, bitexact)
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#endif
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void ff_mpv_unquantize_init(MPVUnquantDSPContext *s,
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int bitexact, int q_scale_type);
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void ff_mpv_unquantize_init_arm (MPVUnquantDSPContext *s, int bitexact);
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void ff_mpv_unquantize_init_neon(MPVUnquantDSPContext *s, int bitexact);
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void ff_mpv_unquantize_init_ppc (MPVUnquantDSPContext *s, int bitexact);
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void ff_mpv_unquantize_init_x86 (MPVUnquantDSPContext *s, int bitexact);
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void ff_mpv_unquantize_init_mips(MPVUnquantDSPContext *s, int bitexact,
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int q_scale_type);
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#endif /* AVCODEC_MPEGVIDEO_UNQUANTIZE_H */
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