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1 | /* |
2 | * Copyright (C) 2013 Xiaolei Yu <dreifachstein@gmail.com> | |
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 | */ | |
20 | ||
21 | #include "config.h" | |
22 | #include "libswscale/swscale.h" | |
23 | #include "libswscale/swscale_internal.h" | |
24 | #include "libavutil/arm/cpu.h" | |
25 | ||
26 | extern void rgbx_to_nv12_neon_32(const uint8_t *src, uint8_t *y, uint8_t *chroma, | |
27 | int width, int height, | |
28 | int y_stride, int c_stride, int src_stride, | |
29 | int32_t coeff_tbl[9]); | |
30 | ||
31 | extern void rgbx_to_nv12_neon_16(const uint8_t *src, uint8_t *y, uint8_t *chroma, | |
32 | int width, int height, | |
33 | int y_stride, int c_stride, int src_stride, | |
34 | int32_t coeff_tbl[9]); | |
35 | ||
36 | static int rgbx_to_nv12_neon_32_wrapper(SwsContext *context, const uint8_t *src[], | |
37 | int srcStride[], int srcSliceY, int srcSliceH, | |
38 | uint8_t *dst[], int dstStride[]) { | |
39 | ||
40 | rgbx_to_nv12_neon_32(src[0] + srcSliceY * srcStride[0], | |
41 | dst[0] + srcSliceY * dstStride[0], | |
42 | dst[1] + (srcSliceY / 2) * dstStride[1], | |
43 | context->srcW, srcSliceH, | |
44 | dstStride[0], dstStride[1], srcStride[0], | |
45 | context->input_rgb2yuv_table); | |
46 | ||
47 | return 0; | |
48 | } | |
49 | ||
50 | static int rgbx_to_nv12_neon_16_wrapper(SwsContext *context, const uint8_t *src[], | |
51 | int srcStride[], int srcSliceY, int srcSliceH, | |
52 | uint8_t *dst[], int dstStride[]) { | |
53 | ||
54 | rgbx_to_nv12_neon_16(src[0] + srcSliceY * srcStride[0], | |
55 | dst[0] + srcSliceY * dstStride[0], | |
56 | dst[1] + (srcSliceY / 2) * dstStride[1], | |
57 | context->srcW, srcSliceH, | |
58 | dstStride[0], dstStride[1], srcStride[0], | |
59 | context->input_rgb2yuv_table); | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | static void get_unscaled_swscale_neon(SwsContext *c) { | |
65 | int accurate_rnd = c->flags & SWS_ACCURATE_RND; | |
66 | if (c->srcFormat == AV_PIX_FMT_RGBA | |
67 | && c->dstFormat == AV_PIX_FMT_NV12 | |
68 | && (c->srcW >= 16)) { | |
69 | c->swscale = accurate_rnd ? rgbx_to_nv12_neon_32_wrapper | |
70 | : rgbx_to_nv12_neon_16_wrapper; | |
71 | } | |
72 | } | |
73 | ||
74 | void ff_get_unscaled_swscale_arm(SwsContext *c) | |
75 | { | |
76 | int cpu_flags = av_get_cpu_flags(); | |
77 | if (have_neon(cpu_flags)) | |
78 | get_unscaled_swscale_neon(c); | |
79 | } |