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swscale_unscaled.c
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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#if HAVE_AS_DN_DIRECTIVE
27extern 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
32extern 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
37static int rgbx_to_nv12_neon_32_wrapper(SwsInternal *context, const uint8_t *const src[],
38 const int srcStride[], int srcSliceY, int srcSliceH,
39 uint8_t *const dst[], const 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->opts.src_w, srcSliceH,
45 dstStride[0], dstStride[1], srcStride[0],
46 context->input_rgb2yuv_table);
47
48 return 0;
49}
50
51static int rgbx_to_nv12_neon_16_wrapper(SwsInternal *context, const uint8_t *const src[],
52 const int srcStride[], int srcSliceY, int srcSliceH,
53 uint8_t *const dst[], const 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->opts.src_w, 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) \
72int 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 \
81static int ifmt##_to_##ofmt##_neon_wrapper(SwsInternal *c, const uint8_t *const src[], \
82 const int srcStride[], int srcSliceY, \
83 int srcSliceH, uint8_t *const dst[], \
84 const int dstStride[]) { \
85 const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE }; \
86 \
87 ff_##ifmt##_to_##ofmt##_neon(c->opts.src_w, srcSliceH, \
88 dst[0] + srcSliceY * dstStride[0], dstStride[0], \
89 src[0], srcStride[0], \
90 src[1], srcStride[1], \
91 src[2], srcStride[2], \
92 yuv2rgb_table, \
93 c->yuv2rgb_y_offset >> 6, \
94 c->yuv2rgb_y_coeff); \
95 \
96 return 0; \
97} \
98
99#define DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuvx) \
100DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, argb) \
101DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, rgba) \
102DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, abgr) \
103DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, bgra) \
104
105DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv420p)
106DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv422p)
107
108#define DECLARE_FF_NVX_TO_RGBX_FUNCS(ifmt, ofmt) \
109int ff_##ifmt##_to_##ofmt##_neon(int w, int h, \
110 uint8_t *dst, int linesize, \
111 const uint8_t *srcY, int linesizeY, \
112 const uint8_t *srcC, int linesizeC, \
113 const int16_t *table, \
114 int y_offset, \
115 int y_coeff); \
116 \
117static int ifmt##_to_##ofmt##_neon_wrapper(SwsInternal *c, const uint8_t *const src[], \
118 const int srcStride[], int srcSliceY, \
119 int srcSliceH, uint8_t *const dst[], \
120 const int dstStride[]) { \
121 const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE }; \
122 \
123 ff_##ifmt##_to_##ofmt##_neon(c->opts.src_w, srcSliceH, \
124 dst[0] + srcSliceY * dstStride[0], dstStride[0], \
125 src[0], srcStride[0], src[1], srcStride[1], \
126 yuv2rgb_table, \
127 c->yuv2rgb_y_offset >> 6, \
128 c->yuv2rgb_y_coeff); \
129 \
130 return 0; \
131} \
132
133#define DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nvx) \
134DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, argb) \
135DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, rgba) \
136DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, abgr) \
137DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, bgra) \
138
139DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv12)
140DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv21)
141
142/* We need a 16 pixel width alignment. This constraint can easily be removed
143 * for input reading but for the output which is 4-bytes per pixel (RGBA) the
144 * assembly might be writing as much as 4*15=60 extra bytes at the end of the
145 * line, which won't fit the 32-bytes buffer alignment. */
146#define SET_FF_NVX_TO_RGBX_FUNC(ifmt, IFMT, ofmt, OFMT, accurate_rnd) do { \
147 if (c->opts.src_format == AV_PIX_FMT_##IFMT \
148 && c->opts.dst_format == AV_PIX_FMT_##OFMT \
149 && !(c->opts.src_h & 1) \
150 && !(c->opts.src_w & 15) \
151 && !accurate_rnd) { \
152 c->convert_unscaled = ifmt##_to_##ofmt##_neon_wrapper; \
153 } \
154} while (0)
155
156#define SET_FF_NVX_TO_ALL_RGBX_FUNC(nvx, NVX, accurate_rnd) do { \
157 SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, argb, ARGB, accurate_rnd); \
158 SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, rgba, RGBA, accurate_rnd); \
159 SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, abgr, ABGR, accurate_rnd); \
160 SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, bgra, BGRA, accurate_rnd); \
161} while (0)
162
163static void get_unscaled_swscale_neon(SwsInternal *c) {
164 int accurate_rnd = c->opts.flags & SWS_ACCURATE_RND;
165 if (c->opts.src_format == AV_PIX_FMT_RGBA
166 && c->opts.dst_format == AV_PIX_FMT_NV12
167 && (c->opts.src_w >= 16)) {
168 c->convert_unscaled = accurate_rnd ? rgbx_to_nv12_neon_32_wrapper
169 : rgbx_to_nv12_neon_16_wrapper;
170 }
171
172 SET_FF_NVX_TO_ALL_RGBX_FUNC(nv12, NV12, accurate_rnd);
173 SET_FF_NVX_TO_ALL_RGBX_FUNC(nv21, NV21, accurate_rnd);
174 SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv420p, YUV420P, accurate_rnd);
175 SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv422p, YUV422P, accurate_rnd);
176}
177
178void ff_get_unscaled_swscale_arm(SwsInternal *c)
179{
180 int cpu_flags = av_get_cpu_flags();
181 if (have_neon(cpu_flags))
182 get_unscaled_swscale_neon(c);
183}
184#else
188#endif
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition dsp.h:87
get_unscaled_swscale_neon
static void get_unscaled_swscale_neon(SwsInternal *c)
Definition swscale_unscaled.c:174
DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS
#define DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuvx)
Definition swscale_unscaled.c:79
ff_get_unscaled_swscale_arm
void ff_get_unscaled_swscale_arm(SwsInternal *c)
Definition swscale_unscaled.c:185
int32_t
int32_t
Definition audioconvert.c:56
SWS_ACCURATE_RND
@ SWS_ACCURATE_RND
Force bit-exact output.
Definition swscale.h:177
have_neon
#define have_neon(flags)
Definition cpu.h:26
cpu_flags
static atomic_int cpu_flags
Definition cpu.c:56
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition cpu.c:109
AV_PIX_FMT_NV12
@ AV_PIX_FMT_NV12
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition pixfmt.h:96
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition pixfmt.h:100
SwsContext::src_w
int src_w
Deprecated frame property overrides, for the legacy API only.
Definition swscale.h:272
SwsInternal::opts
SwsContext opts
Definition swscale_internal.h:339
SwsInternal::input_rgb2yuv_table
int32_t input_rgb2yuv_table[16+40 *4]
Definition swscale_internal.h:467
swscale.h
external API header
swscale_internal.h
src
#define src
Definition vp8dsp.c:248
height
#define height
Definition dsp.h:89
width
#define width
Definition dsp.h:89
chroma
static av_always_inline void chroma(WaveformContext *s, AVFrame *in, AVFrame *out, int component, int intensity, int offset_y, int offset_x, int column, int mirror, int jobnr, int nb_jobs)
Definition vf_waveform.c:1639
c
static double c[64]
Definition vsrc_mptestsrc.c:89
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