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118 lines
4.0 KiB
118 lines
4.0 KiB
/* |
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* DSP utils |
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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/** |
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* @file |
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* DSP utils. |
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* Note, many functions in here may use MMX which trashes the FPU state, it is |
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* absolutely necessary to call emms_c() between DSP & float/double code. |
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*/ |
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#ifndef AVCODEC_DSPUTIL_H |
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#define AVCODEC_DSPUTIL_H |
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#include "avcodec.h" |
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extern uint32_t ff_square_tab[512]; |
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struct MpegEncContext; |
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/* Motion estimation: |
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* h is limited to { width / 2, width, 2 * width }, |
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* but never larger than 16 and never smaller than 2. |
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* Although currently h < 4 is not used as functions with |
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* width < 8 are neither used nor implemented. */ |
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typedef int (*me_cmp_func)(struct MpegEncContext *c, |
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uint8_t *blk1 /* align width (8 or 16) */, |
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uint8_t *blk2 /* align 1 */, int line_size, int h); |
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/** |
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* DSPContext. |
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*/ |
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typedef struct DSPContext { |
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/* pixel ops : interface with DCT */ |
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void (*get_pixels)(int16_t *block /* align 16 */, |
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const uint8_t *pixels /* align 8 */, |
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int line_size); |
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void (*diff_pixels)(int16_t *block /* align 16 */, |
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const uint8_t *s1 /* align 8 */, |
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const uint8_t *s2 /* align 8 */, |
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int stride); |
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int (*sum_abs_dctelem)(int16_t *block /* align 16 */); |
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int (*pix_sum)(uint8_t *pix, int line_size); |
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int (*pix_norm1)(uint8_t *pix, int line_size); |
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me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */ |
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me_cmp_func sse[6]; |
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me_cmp_func hadamard8_diff[6]; |
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me_cmp_func dct_sad[6]; |
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me_cmp_func quant_psnr[6]; |
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me_cmp_func bit[6]; |
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me_cmp_func rd[6]; |
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me_cmp_func vsad[6]; |
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me_cmp_func vsse[6]; |
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me_cmp_func nsse[6]; |
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me_cmp_func dct_max[6]; |
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me_cmp_func dct264_sad[6]; |
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me_cmp_func me_pre_cmp[6]; |
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me_cmp_func me_cmp[6]; |
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me_cmp_func me_sub_cmp[6]; |
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me_cmp_func mb_cmp[6]; |
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me_cmp_func ildct_cmp[6]; // only width 16 used |
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me_cmp_func frame_skip_cmp[6]; // only width 8 used |
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me_cmp_func pix_abs[2][4]; |
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/* (I)DCT */ |
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void (*fdct)(int16_t *block /* align 16 */); |
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void (*fdct248)(int16_t *block /* align 16 */); |
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int (*try_8x8basis)(int16_t rem[64], int16_t weight[64], |
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int16_t basis[64], int scale); |
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void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale); |
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#define BASIS_SHIFT 16 |
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#define RECON_SHIFT 6 |
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void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, |
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int w, int h, int sides); |
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#define EDGE_WIDTH 16 |
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#define EDGE_TOP 1 |
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#define EDGE_BOTTOM 2 |
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void (*shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src, |
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int src_wrap, int width, int height); |
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} DSPContext; |
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void ff_dsputil_static_init(void); |
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void ff_dsputil_init(DSPContext *p, AVCodecContext *avctx); |
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void ff_set_cmp(DSPContext *c, me_cmp_func *cmp, int type); |
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void ff_dsputil_init_arm(DSPContext *c, AVCodecContext *avctx, |
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unsigned high_bit_depth); |
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void ff_dsputil_init_ppc(DSPContext *c, AVCodecContext *avctx, |
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unsigned high_bit_depth); |
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void ff_dsputil_init_x86(DSPContext *c, AVCodecContext *avctx, |
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unsigned high_bit_depth); |
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#endif /* AVCODEC_DSPUTIL_H */
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