FFmpeg: libavcodec/qpeldsp.h Source File

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qpeldsp.h

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1 /*

2 * quarterpel DSP functions

3 *

4 * This file is part of FFmpeg.

5 *

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

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

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

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

10 *

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

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

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

14 * Lesser General Public License for more details.

15 *

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

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

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

19 */

21 /**

22 * @file

23 * quarterpel DSP functions

24 */

26 #ifndef AVCODEC_QPELDSP_H

27 #define AVCODEC_QPELDSP_H

29 #include <stddef.h>

30 #include <stdint.h>

32 void ff_put_pixels8x8_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);

33 void ff_avg_pixels8x8_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);

34 void ff_put_pixels16x16_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);

35 void ff_avg_pixels16x16_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);

37 void ff_put_pixels8_l2_8(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,

38 int dst_stride, int src_stride1, int src_stride2,

39 int h);

41 #define DEF_OLD_QPEL(name) \

42 void ff_put_ ## name(uint8_t *dst /* align width (8 or 16) */, \

43 const uint8_t *src /* align 1 */, \

44 ptrdiff_t stride); \

45 void ff_put_no_rnd_ ## name(uint8_t *dst /* align width (8 or 16) */, \

46 const uint8_t *src /* align 1 */, \

47 ptrdiff_t stride); \

48 void ff_avg_ ## name(uint8_t *dst /* align width (8 or 16) */, \

49 const uint8_t *src /* align 1 */, \

50 ptrdiff_t stride);

52 DEF_OLD_QPEL(qpel16_mc11_old_c)

53 DEF_OLD_QPEL(qpel16_mc31_old_c)

54 DEF_OLD_QPEL(qpel16_mc12_old_c)

55 DEF_OLD_QPEL(qpel16_mc32_old_c)

56 DEF_OLD_QPEL(qpel16_mc13_old_c)

57 DEF_OLD_QPEL(qpel16_mc33_old_c)

58 DEF_OLD_QPEL(qpel8_mc11_old_c)

59 DEF_OLD_QPEL(qpel8_mc31_old_c)

60 DEF_OLD_QPEL(qpel8_mc12_old_c)

61 DEF_OLD_QPEL(qpel8_mc32_old_c)

62 DEF_OLD_QPEL(qpel8_mc13_old_c)

63 DEF_OLD_QPEL(qpel8_mc33_old_c)

65 typedef void (*qpel_mc_func)(uint8_t *dst /* align width (8 or 16) */,

66 const uint8_t *src /* align 1 */,

67 ptrdiff_t stride);

69 /**

70 * quarterpel DSP context

71 */

72 typedef struct QpelDSPContext {

73 qpel_mc_func put_qpel_pixels_tab[2][16];

74 qpel_mc_func avg_qpel_pixels_tab[2][16];

75 qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];

76 } QpelDSPContext;

78 void ff_qpeldsp_init(QpelDSPContext *c);

80 void ff_qpeldsp_init_x86(QpelDSPContext *c);

81 void ff_qpeldsp_init_mips(QpelDSPContext *c);

83 #endif /* AVCODEC_QPELDSP_H */

ff_qpeldsp_init

void ff_qpeldsp_init(QpelDSPContext *c)

Definition: qpeldsp.c:784

src1

const pixel * src1

Definition: h264pred_template.c:421

ff_put_pixels8x8_c

void ff_put_pixels8x8_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)

Definition: qpeldsp.c:704

ff_qpeldsp_init_x86

void ff_qpeldsp_init_x86(QpelDSPContext *c)

Definition: qpeldsp_init.c:529

ff_avg_pixels8x8_c

void ff_avg_pixels8x8_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)

Definition: qpeldsp.c:709

ff_put_pixels16x16_c

void ff_put_pixels16x16_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)

Definition: qpeldsp.c:714

ff_qpeldsp_init_mips

void ff_qpeldsp_init_mips(QpelDSPContext *c)

Definition: qpeldsp_init_mips.c:24

Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c

Definition: undefined.txt:32

qpel_mc_func

void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)

Definition: qpeldsp.h:65

dst

uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst

Definition: dsp.h:83

DEF_OLD_QPEL

#define DEF_OLD_QPEL(name)

Definition: qpeldsp.h:41

src2

const pixel * src2