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https://github.com/FFmpeg/FFmpeg.git
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fd17218558
VP4 applies a loop filter during motion compensation, causing the block offset will often by unaligned. This produces a bus error on some platforms, namely ARMv7 NEON. This patch adds a unaligned version of the loop filter function pointer to VP3DSPContext. Reported-by: Mike Melanson <mike@multimedia.cx> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
65 lines
2.7 KiB
C
65 lines
2.7 KiB
C
/*
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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_VP3DSP_H
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#define AVCODEC_VP3DSP_H
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#include <stddef.h>
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#include <stdint.h>
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typedef struct VP3DSPContext {
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/**
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* Copy 8xH pixels from source to destination buffer using a bilinear
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* filter with no rounding (i.e. *dst = (*a + *b) >> 1).
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*
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* @param dst destination buffer, aligned by 8
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* @param a first source buffer, no alignment
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* @param b second source buffer, no alignment
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* @param stride distance between two lines in source/dest buffers
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* @param h height
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*/
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void (*put_no_rnd_pixels_l2)(uint8_t *dst,
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const uint8_t *a,
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const uint8_t *b,
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ptrdiff_t stride, int h);
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void (*idct_put)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
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void (*idct_add)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
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void (*idct_dc_add)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
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void (*v_loop_filter)(uint8_t *src, ptrdiff_t stride, int *bounding_values);
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void (*h_loop_filter)(uint8_t *src, ptrdiff_t stride, int *bounding_values);
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void (*v_loop_filter_unaligned)(uint8_t *src, ptrdiff_t stride, int *bounding_values);
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void (*h_loop_filter_unaligned)(uint8_t *src, ptrdiff_t stride, int *bounding_values);
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} VP3DSPContext;
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void ff_vp3dsp_v_loop_filter_12(uint8_t *first_pixel, ptrdiff_t stride, int *bounding_values);
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void ff_vp3dsp_h_loop_filter_12(uint8_t *first_pixel, ptrdiff_t stride, int *bounding_values);
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void ff_vp3dsp_idct10_put(uint8_t *dest, ptrdiff_t stride, int16_t *block);
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void ff_vp3dsp_idct10_add(uint8_t *dest, ptrdiff_t stride, int16_t *block);
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void ff_vp3dsp_init(VP3DSPContext *c, int flags);
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void ff_vp3dsp_init_arm(VP3DSPContext *c, int flags);
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void ff_vp3dsp_init_ppc(VP3DSPContext *c, int flags);
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void ff_vp3dsp_init_x86(VP3DSPContext *c, int flags);
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void ff_vp3dsp_init_mips(VP3DSPContext *c, int flags);
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void ff_vp3dsp_set_bounding_values(int * bound_values_array, int filter_limit);
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#endif /* AVCODEC_VP3DSP_H */
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