/* * Copyright (c) 2003-2010 Michael Niedermayer <michaelni@gmx.at> * * 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
*/
typedefvoid (*h264_weight_func)(uint8_t *block, ptrdiff_t stride, int height, int log2_denom, int weight, int offset); typedefvoid (*h264_biweight_func)(uint8_t *dst, uint8_t *src,
ptrdiff_t stride, int height, int log2_denom, int weightd, int weights, int offset);
/** * Context for storing H.264 DSP functions
*/ typedefstruct H264DSPContext { /* weighted MC */
h264_weight_func weight_h264_pixels_tab[4];
h264_biweight_func biweight_h264_pixels_tab[4];
/* loop filter */ void (*h264_v_loop_filter_luma)(uint8_t *pix /*align 16*/, ptrdiff_t stride, int alpha, int beta, int8_t *tc0); void (*h264_h_loop_filter_luma)(uint8_t *pix /*align 4 */, ptrdiff_t stride, int alpha, int beta, int8_t *tc0); void (*h264_h_loop_filter_luma_mbaff)(uint8_t *pix /*align 16*/, ptrdiff_t stride, int alpha, int beta, int8_t *tc0); /* v/h_loop_filter_luma_intra: align 16 */ void (*h264_v_loop_filter_luma_intra)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta); void (*h264_h_loop_filter_luma_intra)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta); void (*h264_h_loop_filter_luma_mbaff_intra)(uint8_t *pix /*align 16*/,
ptrdiff_t stride, int alpha, int beta); void (*h264_v_loop_filter_chroma)(uint8_t *pix /*align 8*/, ptrdiff_t stride, int alpha, int beta, int8_t *tc0); void (*h264_h_loop_filter_chroma)(uint8_t *pix /*align 4*/, ptrdiff_t stride, int alpha, int beta, int8_t *tc0); void (*h264_h_loop_filter_chroma_mbaff)(uint8_t *pix /*align 8*/,
ptrdiff_t stride, int alpha, int beta,
int8_t *tc0); void (*h264_v_loop_filter_chroma_intra)(uint8_t *pix /*align 8*/,
ptrdiff_t stride, int alpha, int beta); void (*h264_h_loop_filter_chroma_intra)(uint8_t *pix /*align 8*/,
ptrdiff_t stride, int alpha, int beta); void (*h264_h_loop_filter_chroma_mbaff_intra)(uint8_t *pix /*align 8*/,
ptrdiff_t stride, int alpha, int beta); // h264_loop_filter_strength: simd only. the C version is inlined in h264_loopfilter.c void (*h264_loop_filter_strength)(int16_t bS[2][4][4], uint8_t nnz[40],
int8_t ref[2][40], int16_t mv[2][40][2], int bidir, int edges, int step, int mask_mv0, int mask_mv1, int field);
void (*h264_idct_add16)(uint8_t *dst /*align 16*/, const int *blockoffset,
int16_t *block /*align 16*/, int stride, const uint8_t nnzc[5 * 8]); void (*h264_idct8_add4)(uint8_t *dst /*align 16*/, const int *blockoffset,
int16_t *block /*align 16*/, int stride, const uint8_t nnzc[5 * 8]); void (*h264_idct_add8)(uint8_t **dst /*align 16*/, const int *blockoffset,
int16_t *block /*align 16*/, int stride, const uint8_t nnzc[15 * 8]); void (*h264_idct_add16intra)(uint8_t *dst /*align 16*/, const int *blockoffset,
int16_t *block /*align 16*/, int stride, const uint8_t nnzc[5 * 8]); void (*h264_luma_dc_dequant_idct)(int16_t *output,
int16_t *input /*align 16*/, int qmul); void (*h264_chroma_dc_dequant_idct)(int16_t *block, int qmul);
/* bypass-transform */ void (*h264_add_pixels8_clear)(uint8_t *dst, int16_t *block, int stride); void (*h264_add_pixels4_clear)(uint8_t *dst, int16_t *block, int stride);
/** * Search buf from the start for up to size bytes. Return the index * of a zero byte, or >= size if not found. Ideally, use lookahead * to filter out any zero bytes that are known to not be followed by * one or more further zero bytes and a one byte. Better still, filter * out any bytes that form the trailing_zero_8bits syntax element too.
*/ int (*startcode_find_candidate)(const uint8_t *buf, int size);
} H264DSPContext;
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