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 #if HAVE_AS_DN_DIRECTIVE
27 extern void rgbx_to_nv12_neon_32(const uint8_t *src, uint8_t *y, uint8_t *chroma,
28 int width, int height,
29 int y_stride, int c_stride, int src_stride,
30 int32_t coeff_tbl[9]);
31
32 extern void rgbx_to_nv12_neon_16(const uint8_t *src, uint8_t *y, uint8_t *chroma,
33 int width, int height,
34 int y_stride, int c_stride, int src_stride,
35 int32_t coeff_tbl[9]);
36
rgbx_to_nv12_neon_32_wrapper(SwsContext * context,const uint8_t * src[],int srcStride[],int srcSliceY,int srcSliceH,uint8_t * dst[],int dstStride[])37 static int rgbx_to_nv12_neon_32_wrapper(SwsContext *context, const uint8_t *src[],
38 int srcStride[], int srcSliceY, int srcSliceH,
39 uint8_t *dst[], int dstStride[]) {
40
41 rgbx_to_nv12_neon_32(src[0] + srcSliceY * srcStride[0],
42 dst[0] + srcSliceY * dstStride[0],
43 dst[1] + (srcSliceY / 2) * dstStride[1],
44 context->srcW, srcSliceH,
45 dstStride[0], dstStride[1], srcStride[0],
46 context->input_rgb2yuv_table);
47
48 return 0;
49 }
50
rgbx_to_nv12_neon_16_wrapper(SwsContext * context,const uint8_t * src[],int srcStride[],int srcSliceY,int srcSliceH,uint8_t * dst[],int dstStride[])51 static int rgbx_to_nv12_neon_16_wrapper(SwsContext *context, const uint8_t *src[],
52 int srcStride[], int srcSliceY, int srcSliceH,
53 uint8_t *dst[], int dstStride[]) {
54
55 rgbx_to_nv12_neon_16(src[0] + srcSliceY * srcStride[0],
56 dst[0] + srcSliceY * dstStride[0],
57 dst[1] + (srcSliceY / 2) * dstStride[1],
58 context->srcW, srcSliceH,
59 dstStride[0], dstStride[1], srcStride[0],
60 context->input_rgb2yuv_table);
61
62 return 0;
63 }
64
65 #define YUV_TO_RGB_TABLE \
66 c->yuv2rgb_v2r_coeff, \
67 c->yuv2rgb_u2g_coeff, \
68 c->yuv2rgb_v2g_coeff, \
69 c->yuv2rgb_u2b_coeff, \
70
71 #define DECLARE_FF_YUVX_TO_RGBX_FUNCS(ifmt, ofmt) \
72 int ff_##ifmt##_to_##ofmt##_neon(int w, int h, \
73 uint8_t *dst, int linesize, \
74 const uint8_t *srcY, int linesizeY, \
75 const uint8_t *srcU, int linesizeU, \
76 const uint8_t *srcV, int linesizeV, \
77 const int16_t *table, \
78 int y_offset, \
79 int y_coeff); \
80 \
81 static int ifmt##_to_##ofmt##_neon_wrapper(SwsContext *c, const uint8_t *src[], \
82 int srcStride[], int srcSliceY, int srcSliceH, \
83 uint8_t *dst[], int dstStride[]) { \
84 const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE }; \
85 \
86 ff_##ifmt##_to_##ofmt##_neon(c->srcW, srcSliceH, \
87 dst[0] + srcSliceY * dstStride[0], dstStride[0], \
88 src[0], srcStride[0], \
89 src[1], srcStride[1], \
90 src[2], srcStride[2], \
91 yuv2rgb_table, \
92 c->yuv2rgb_y_offset >> 6, \
93 c->yuv2rgb_y_coeff); \
94 \
95 return 0; \
96 } \
97
98 #define DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuvx) \
99 DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, argb) \
100 DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, rgba) \
101 DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, abgr) \
102 DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, bgra) \
103
104 DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv420p)
DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv422p)105 DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv422p)
106
107 #define DECLARE_FF_NVX_TO_RGBX_FUNCS(ifmt, ofmt) \
108 int ff_##ifmt##_to_##ofmt##_neon(int w, int h, \
109 uint8_t *dst, int linesize, \
110 const uint8_t *srcY, int linesizeY, \
111 const uint8_t *srcC, int linesizeC, \
112 const int16_t *table, \
113 int y_offset, \
114 int y_coeff); \
115 \
116 static int ifmt##_to_##ofmt##_neon_wrapper(SwsContext *c, const uint8_t *src[], \
117 int srcStride[], int srcSliceY, int srcSliceH, \
118 uint8_t *dst[], int dstStride[]) { \
119 const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE }; \
120 \
121 ff_##ifmt##_to_##ofmt##_neon(c->srcW, srcSliceH, \
122 dst[0] + srcSliceY * dstStride[0], dstStride[0], \
123 src[0], srcStride[0], src[1], srcStride[1], \
124 yuv2rgb_table, \
125 c->yuv2rgb_y_offset >> 6, \
126 c->yuv2rgb_y_coeff); \
127 \
128 return 0; \
129 } \
130
131 #define DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nvx) \
132 DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, argb) \
133 DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, rgba) \
134 DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, abgr) \
135 DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, bgra) \
136
137 DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv12)
138 DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv21)
139
140 /* We need a 16 pixel width alignment. This constraint can easily be removed
141 * for input reading but for the output which is 4-bytes per pixel (RGBA) the
142 * assembly might be writing as much as 4*15=60 extra bytes at the end of the
143 * line, which won't fit the 32-bytes buffer alignment. */
144 #define SET_FF_NVX_TO_RGBX_FUNC(ifmt, IFMT, ofmt, OFMT, accurate_rnd) do { \
145 if (c->srcFormat == AV_PIX_FMT_##IFMT \
146 && c->dstFormat == AV_PIX_FMT_##OFMT \
147 && !(c->srcH & 1) \
148 && !(c->srcW & 15) \
149 && !accurate_rnd) { \
150 c->swscale = ifmt##_to_##ofmt##_neon_wrapper; \
151 } \
152 } while (0)
153
154 #define SET_FF_NVX_TO_ALL_RGBX_FUNC(nvx, NVX, accurate_rnd) do { \
155 SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, argb, ARGB, accurate_rnd); \
156 SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, rgba, RGBA, accurate_rnd); \
157 SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, abgr, ABGR, accurate_rnd); \
158 SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, bgra, BGRA, accurate_rnd); \
159 } while (0)
160
161 static void get_unscaled_swscale_neon(SwsContext *c) {
162 int accurate_rnd = c->flags & SWS_ACCURATE_RND;
163 if (c->srcFormat == AV_PIX_FMT_RGBA
164 && c->dstFormat == AV_PIX_FMT_NV12
165 && (c->srcW >= 16)) {
166 c->swscale = accurate_rnd ? rgbx_to_nv12_neon_32_wrapper
167 : rgbx_to_nv12_neon_16_wrapper;
168 }
169
170 SET_FF_NVX_TO_ALL_RGBX_FUNC(nv12, NV12, accurate_rnd);
171 SET_FF_NVX_TO_ALL_RGBX_FUNC(nv21, NV21, accurate_rnd);
172 SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv420p, YUV420P, accurate_rnd);
173 SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv422p, YUV422P, accurate_rnd);
174 }
175
ff_get_unscaled_swscale_arm(SwsContext * c)176 void ff_get_unscaled_swscale_arm(SwsContext *c)
177 {
178 int cpu_flags = av_get_cpu_flags();
179 if (have_neon(cpu_flags))
180 get_unscaled_swscale_neon(c);
181 }
182 #else
ff_get_unscaled_swscale_arm(SwsContext * c)183 void ff_get_unscaled_swscale_arm(SwsContext *c)
184 {
185 }
186 #endif
187