FFmpeg: libavcodec/me_cmp.h Source File

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libavcodec

me_cmp.h

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1 /*

2 * This file is part of FFmpeg.

3 *

4 * FFmpeg is free software; you can redistribute it and/or

5 * modify it under the terms of the GNU Lesser General Public

6 * License as published by the Free Software Foundation; either

7 * version 2.1 of the License, or (at your option) any later version.

8 *

9 * FFmpeg is distributed in the hope that it will be useful,

10 * but WITHOUT ANY WARRANTY; without even the implied warranty of

11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

12 * Lesser General Public License for more details.

13 *

14 * You should have received a copy of the GNU Lesser General Public

15 * License along with FFmpeg; if not, write to the Free Software

16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

17 */

19 #ifndef AVCODEC_ME_CMP_H

20 #define AVCODEC_ME_CMP_H

22 #include <stdint.h>

24 #include "avcodec.h"

26 extern uint32_t ff_square_tab[512];

29 /* minimum alignment rules ;)

30 * If you notice errors in the align stuff, need more alignment for some ASM code

31 * for some CPU or need to use a function with less aligned data then send a mail

32 * to the ffmpeg-devel mailing list, ...

33 *

34 * !warning These alignments might not match reality, (missing attribute((align))

35 * stuff somewhere possible).

36 * I (Michael) did not check them, these are just the alignments which I think

37 * could be reached easily ...

38 *

39 * !future video codecs might need functions with less strict alignment

40 */

42 struct MpegEncContext;

43 /* Motion estimation:

44 * h is limited to { width / 2, width, 2 * width },

45 * but never larger than 16 and never smaller than 2.

46 * Although currently h < 4 is not used as functions with

47 * width < 8 are neither used nor implemented. */

48 typedef int (*me_cmp_func)(struct MpegEncContext *c,

49 uint8_t *blk1 /* align width (8 or 16) */,

50 uint8_t *blk2 /* align 1 */, ptrdiff_t stride,

51 int h);

53 typedef struct MECmpContext {

54 int (*sum_abs_dctelem)(int16_t *block /* align 16 */);

56 me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */

57 me_cmp_func sse[6];

58 me_cmp_func hadamard8_diff[6];

59 me_cmp_func dct_sad[6];

60 me_cmp_func quant_psnr[6];

61 me_cmp_func bit[6];

62 me_cmp_func rd[6];

63 me_cmp_func vsad[6];

64 me_cmp_func vsse[6];

65 me_cmp_func nsse[6];

66 me_cmp_func w53[6];

67 me_cmp_func w97[6];

68 me_cmp_func dct_max[6];

69 me_cmp_func dct264_sad[6];

71 me_cmp_func me_pre_cmp[6];

72 me_cmp_func me_cmp[6];

73 me_cmp_func me_sub_cmp[6];

74 me_cmp_func mb_cmp[6];

75 me_cmp_func ildct_cmp[6]; // only width 16 used

76 me_cmp_func frame_skip_cmp[6]; // only width 8 used

78 me_cmp_func pix_abs[2][4];

79 } MECmpContext;

81 void ff_me_cmp_init_static(void);

83 int ff_check_alignment(void);

85 void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx);

86 void ff_me_cmp_init_alpha(MECmpContext *c, AVCodecContext *avctx);

87 void ff_me_cmp_init_arm(MECmpContext *c, AVCodecContext *avctx);

88 void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx);

89 void ff_me_cmp_init_x86(MECmpContext *c, AVCodecContext *avctx);

91 void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type);

93 void ff_dsputil_init_dwt(MECmpContext *c);

95 #endif /* AVCODEC_ME_CMP_H */

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