FFmpeg: libavcodec/x86/blockdsp_init.c Source File

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blockdsp_init.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 */

19 #include <stdint.h>

21 #include "config.h"

22 #include "libavutil/attributes.h"

23 #include "libavutil/internal.h"

24 #include "libavutil/cpu.h"

25 #include "libavutil/x86/cpu.h"

26 #include "libavcodec/blockdsp.h"

27 #include "libavcodec/version.h"

29 void ff_clear_block_mmx(int16_t *block);

30 void ff_clear_block_sse(int16_t *block);

31 void ff_clear_blocks_mmx(int16_t *blocks);

32 void ff_clear_blocks_sse(int16_t *blocks);

34 #if FF_API_XVMC

35 av_cold void ff_blockdsp_init_x86(BlockDSPContext *c, unsigned high_bit_depth,

36 AVCodecContext *avctx)

37 #else

38 av_cold void ff_blockdsp_init_x86(BlockDSPContext *c, unsigned high_bit_depth)

39 #endif /* FF_API_XVMC */

40 {

41 #if HAVE_YASM

42 int cpu_flags = av_get_cpu_flags();

44 if (!high_bit_depth) {

45 if (EXTERNAL_MMX(cpu_flags)) {

46 c->clear_block = ff_clear_block_mmx;

47 c->clear_blocks = ff_clear_blocks_mmx;

48 }

50 /* XvMCCreateBlocks() may not allocate 16-byte aligned blocks */

51 if (CONFIG_XVMC && avctx->hwaccel && avctx->hwaccel->decode_mb)

52 return;

54 if (EXTERNAL_SSE(cpu_flags)) {

55 c->clear_block = ff_clear_block_sse;

56 c->clear_blocks = ff_clear_blocks_sse;

57 }

58 }

59 #endif /* HAVE_YASM */

60 }

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