FFmpeg: libavcodec/h264chroma.c Source File

FFmpeg

libavcodec

h264chroma.c

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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 */

18

19 #include "config.h"

20 #include "libavutil/attributes.h"

21 #include "h264chroma.h"

22

23 #define BIT_DEPTH 8

24 #include "h264chroma_template.c"

25 #undef BIT_DEPTH

26

27 #define BIT_DEPTH 16

28 #include "h264chroma_template.c"

29 #undef BIT_DEPTH

30

31 #define SET_CHROMA(depth) \

32 c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_ ## depth ## _c; \

33 c->put_h264_chroma_pixels_tab[1] = put_h264_chroma_mc4_ ## depth ## _c; \

34 c->put_h264_chroma_pixels_tab[2] = put_h264_chroma_mc2_ ## depth ## _c; \

35 c->put_h264_chroma_pixels_tab[3] = put_h264_chroma_mc1_ ## depth ## _c; \

36 c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_ ## depth ## _c; \

37 c->avg_h264_chroma_pixels_tab[1] = avg_h264_chroma_mc4_ ## depth ## _c; \

38 c->avg_h264_chroma_pixels_tab[2] = avg_h264_chroma_mc2_ ## depth ## _c; \

39 c->avg_h264_chroma_pixels_tab[3] = avg_h264_chroma_mc1_ ## depth ## _c; \

40

41 av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)

42 {

43 if (bit_depth > 8 && bit_depth <= 16) {

44 SET_CHROMA(16);

45 } else {

46 SET_CHROMA(8);

47 }

48

49 #if ARCH_AARCH64

50 ff_h264chroma_init_aarch64(c, bit_depth);

51 #elif ARCH_ARM

52 ff_h264chroma_init_arm(c, bit_depth);

53 #elif ARCH_PPC

54 ff_h264chroma_init_ppc(c, bit_depth);

55 #elif ARCH_X86

56 ff_h264chroma_init_x86(c, bit_depth);

57 #elif ARCH_MIPS

58 ff_h264chroma_init_mips(c, bit_depth);

59 #elif ARCH_LOONGARCH64

60 ff_h264chroma_init_loongarch(c, bit_depth);

61 #elif ARCH_RISCV

62 ff_h264chroma_init_riscv(c, bit_depth);

63 #endif

64 }

ff_h264chroma_init_riscv

void ff_h264chroma_init_riscv(H264ChromaContext *c, int bit_depth)

Definition: h264_chroma_init_riscv.c:35

ff_h264chroma_init_arm

av_cold void ff_h264chroma_init_arm(H264ChromaContext *c, int bit_depth)

Definition: h264chroma_init_arm.c:43

ff_h264chroma_init_x86

void ff_h264chroma_init_x86(H264ChromaContext *c, int bit_depth)

Definition: h264chroma_init.c:66

static void bit_depth(AudioStatsContext *s, const uint64_t *const mask, uint8_t *depth)

Definition: af_astats.c:246

ff_h264chroma_init_mips

void ff_h264chroma_init_mips(H264ChromaContext *c, int bit_depth)

Definition: h264chroma_init_mips.c:27

#define av_cold

Definition: attributes.h:90

#define SET_CHROMA(depth)

Definition: h264chroma.c:31

ff_h264chroma_init_aarch64

av_cold void ff_h264chroma_init_aarch64(H264ChromaContext *c, int bit_depth)

Definition: h264chroma_init_aarch64.c:45

c

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

ff_h264chroma_init_loongarch

void ff_h264chroma_init_loongarch(H264ChromaContext *c, int bit_depth)

Definition: h264chroma_init_loongarch.c:27

ff_h264chroma_init_ppc

void ff_h264chroma_init_ppc(H264ChromaContext *c, int bit_depth)

Definition: h264chroma_init.c:52

ff_h264chroma_init

av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)

Definition: h264chroma.c:41

H264ChromaContext

Definition: h264chroma.h:27

h264chroma_template.c

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