/* * 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_ME_CMP_H #define AVCODEC_ME_CMP_H #include <stdint.h> #include "avcodec.h" extern const uint32_t ff_square_tab[512]; /* minimum alignment rules ;) * If you notice errors in the align stuff, need more alignment for some ASM code * for some CPU or need to use a function with less aligned data then send a mail * to the ffmpeg-devel mailing list, ... * * !warning These alignments might not match reality, (missing attribute((align)) * stuff somewhere possible). * I (Michael) did not check them, these are just the alignments which I think * could be reached easily ... * * !future video codecs might need functions with less strict alignment */ struct MpegEncContext; /* Motion estimation: * h is limited to { width / 2, width, 2 * width }, * but never larger than 16 and never smaller than 2. * Although currently h < 4 is not used as functions with * width < 8 are neither used nor implemented. */ typedef int (*me_cmp_func)(struct MpegEncContext *c, uint8_t *blk1 /* align width (8 or 16) */, uint8_t *blk2 /* align 1 */, ptrdiff_t stride, int h); typedef struct MECmpContext { int (*sum_abs_dctelem)(int16_t *block /* align 16 */); me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */ me_cmp_func sse[6]; me_cmp_func hadamard8_diff[6]; me_cmp_func dct_sad[6]; me_cmp_func quant_psnr[6]; me_cmp_func bit[6]; me_cmp_func rd[6]; me_cmp_func vsad[6]; me_cmp_func vsse[6]; me_cmp_func nsse[6]; me_cmp_func w53[6]; me_cmp_func w97[6]; me_cmp_func dct_max[6]; me_cmp_func dct264_sad[6]; me_cmp_func me_pre_cmp[6]; me_cmp_func me_cmp[6]; me_cmp_func me_sub_cmp[6]; me_cmp_func mb_cmp[6]; me_cmp_func ildct_cmp[6]; // only width 16 used me_cmp_func frame_skip_cmp[6]; // only width 8 used me_cmp_func pix_abs[2][4]; me_cmp_func median_sad[6]; } MECmpContext; int ff_check_alignment(void); void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx); void ff_me_cmp_init_alpha(MECmpContext *c, AVCodecContext *avctx); void ff_me_cmp_init_arm(MECmpContext *c, AVCodecContext *avctx); void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx); void ff_me_cmp_init_x86(MECmpContext *c, AVCodecContext *avctx); void ff_me_cmp_init_mips(MECmpContext *c, AVCodecContext *avctx); void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type); void ff_dsputil_init_dwt(MECmpContext *c); #endif /* AVCODEC_ME_CMP_H */