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Issue 2694113002: Delete media/base/yuv_convert and dependents. Prefer libyuv. (Closed)
Patch Set: Fix media_unittests. Created 3 years, 10 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <stddef.h>
6 #include <stdint.h>
7
8 #include "build/build_config.h"
9 #include "media/base/simd/convert_yuv_to_rgb.h"
10
11 namespace media {
12
13 #define packuswb(x) ((x) < 0 ? 0 : ((x) > 255 ? 255 : (x)))
14 #define paddsw(x, y) (((x) + (y)) < -32768 ? -32768 : \
15 (((x) + (y)) > 32767 ? 32767 : ((x) + (y))))
16
17 // On Android, pixel layout is RGBA (see skia/include/core/SkColorPriv.h);
18 // however, other Chrome platforms use BGRA (see skia/config/SkUserConfig.h).
19 // Ideally, android should not use the functions here due to performance issue
20 // (http://crbug.com/249980).
21 #if defined(OS_ANDROID)
22 #define SK_R32_SHIFT 0
23 #define SK_G32_SHIFT 8
24 #define SK_B32_SHIFT 16
25 #define SK_A32_SHIFT 24
26 #define R_INDEX 0
27 #define G_INDEX 1
28 #define B_INDEX 2
29 #define A_INDEX 3
30 #else
31 #define SK_B32_SHIFT 0
32 #define SK_G32_SHIFT 8
33 #define SK_R32_SHIFT 16
34 #define SK_A32_SHIFT 24
35 #define B_INDEX 0
36 #define G_INDEX 1
37 #define R_INDEX 2
38 #define A_INDEX 3
39 #endif
40
41 static inline void ConvertYUVToRGB32_C(uint8_t y,
42 uint8_t u,
43 uint8_t v,
44 uint8_t* rgb_buf,
45 const int16_t* convert_table) {
46 int b = convert_table[4 * (256 + u) + B_INDEX];
47 int g = convert_table[4 * (256 + u) + G_INDEX];
48 int r = convert_table[4 * (256 + u) + R_INDEX];
49 int a = convert_table[4 * (256 + u) + A_INDEX];
50
51 b = paddsw(b, convert_table[4 * (512 + v) + B_INDEX]);
52 g = paddsw(g, convert_table[4 * (512 + v) + G_INDEX]);
53 r = paddsw(r, convert_table[4 * (512 + v) + R_INDEX]);
54 a = paddsw(a, convert_table[4 * (512 + v) + A_INDEX]);
55
56 b = paddsw(b, convert_table[4 * y + B_INDEX]);
57 g = paddsw(g, convert_table[4 * y + G_INDEX]);
58 r = paddsw(r, convert_table[4 * y + R_INDEX]);
59 a = paddsw(a, convert_table[4 * y + A_INDEX]);
60
61 b >>= 6;
62 g >>= 6;
63 r >>= 6;
64 a >>= 6;
65
66 *reinterpret_cast<uint32_t*>(rgb_buf) =
67 (packuswb(b) << SK_B32_SHIFT) | (packuswb(g) << SK_G32_SHIFT) |
68 (packuswb(r) << SK_R32_SHIFT) | (packuswb(a) << SK_A32_SHIFT);
69 }
70
71 static inline void ConvertYUVAToARGB_C(uint8_t y,
72 uint8_t u,
73 uint8_t v,
74 uint8_t a,
75 uint8_t* rgb_buf,
76 const int16_t* convert_table) {
77 int b = convert_table[4 * (256 + u) + 0];
78 int g = convert_table[4 * (256 + u) + 1];
79 int r = convert_table[4 * (256 + u) + 2];
80
81 b = paddsw(b, convert_table[4 * (512 + v) + 0]);
82 g = paddsw(g, convert_table[4 * (512 + v) + 1]);
83 r = paddsw(r, convert_table[4 * (512 + v) + 2]);
84
85 b = paddsw(b, convert_table[4 * y + 0]);
86 g = paddsw(g, convert_table[4 * y + 1]);
87 r = paddsw(r, convert_table[4 * y + 2]);
88
89 b >>= 6;
90 g >>= 6;
91 r >>= 6;
92
93 b = packuswb(b) * a >> 8;
94 g = packuswb(g) * a >> 8;
95 r = packuswb(r) * a >> 8;
96
97 *reinterpret_cast<uint32_t*>(rgb_buf) =
98 (b << SK_B32_SHIFT) | (g << SK_G32_SHIFT) | (r << SK_R32_SHIFT) |
99 (a << SK_A32_SHIFT);
100 }
101
102 void ConvertYUVToRGB32Row_C(const uint8_t* y_buf,
103 const uint8_t* u_buf,
104 const uint8_t* v_buf,
105 uint8_t* rgb_buf,
106 ptrdiff_t width,
107 const int16_t* convert_table) {
108 for (int x = 0; x < width; x += 2) {
109 uint8_t u = u_buf[x >> 1];
110 uint8_t v = v_buf[x >> 1];
111 uint8_t y0 = y_buf[x];
112 ConvertYUVToRGB32_C(y0, u, v, rgb_buf, convert_table);
113 if ((x + 1) < width) {
114 uint8_t y1 = y_buf[x + 1];
115 ConvertYUVToRGB32_C(y1, u, v, rgb_buf + 4, convert_table);
116 }
117 rgb_buf += 8; // Advance 2 pixels.
118 }
119 }
120
121 void ConvertYUVAToARGBRow_C(const uint8_t* y_buf,
122 const uint8_t* u_buf,
123 const uint8_t* v_buf,
124 const uint8_t* a_buf,
125 uint8_t* rgba_buf,
126 ptrdiff_t width,
127 const int16_t* convert_table) {
128 for (int x = 0; x < width; x += 2) {
129 uint8_t u = u_buf[x >> 1];
130 uint8_t v = v_buf[x >> 1];
131 uint8_t y0 = y_buf[x];
132 uint8_t a0 = a_buf[x];
133 ConvertYUVAToARGB_C(y0, u, v, a0, rgba_buf, convert_table);
134 if ((x + 1) < width) {
135 uint8_t y1 = y_buf[x + 1];
136 uint8_t a1 = a_buf[x + 1];
137 ConvertYUVAToARGB_C(y1, u, v, a1, rgba_buf + 4, convert_table);
138 }
139 rgba_buf += 8; // Advance 2 pixels.
140 }
141 }
142
143 // 16.16 fixed point is used. A shift by 16 isolates the integer.
144 // A shift by 17 is used to further subsample the chrominence channels.
145 // & 0xffff isolates the fixed point fraction. >> 2 to get the upper 2 bits,
146 // for 1/65536 pixel accurate interpolation.
147 void ScaleYUVToRGB32Row_C(const uint8_t* y_buf,
148 const uint8_t* u_buf,
149 const uint8_t* v_buf,
150 uint8_t* rgb_buf,
151 ptrdiff_t width,
152 ptrdiff_t source_dx,
153 const int16_t* convert_table) {
154 int x = 0;
155 for (int i = 0; i < width; i += 2) {
156 int y = y_buf[x >> 16];
157 int u = u_buf[(x >> 17)];
158 int v = v_buf[(x >> 17)];
159 ConvertYUVToRGB32_C(y, u, v, rgb_buf, convert_table);
160 x += source_dx;
161 if ((i + 1) < width) {
162 y = y_buf[x >> 16];
163 ConvertYUVToRGB32_C(y, u, v, rgb_buf+4, convert_table);
164 x += source_dx;
165 }
166 rgb_buf += 8;
167 }
168 }
169
170 void LinearScaleYUVToRGB32Row_C(const uint8_t* y_buf,
171 const uint8_t* u_buf,
172 const uint8_t* v_buf,
173 uint8_t* rgb_buf,
174 ptrdiff_t width,
175 ptrdiff_t source_dx,
176 const int16_t* convert_table) {
177 // Avoid point-sampling for down-scaling by > 2:1.
178 int source_x = 0;
179 if (source_dx >= 0x20000)
180 source_x += 0x8000;
181 LinearScaleYUVToRGB32RowWithRange_C(y_buf, u_buf, v_buf, rgb_buf, width,
182 source_x, source_dx, convert_table);
183 }
184
185 void LinearScaleYUVToRGB32RowWithRange_C(const uint8_t* y_buf,
186 const uint8_t* u_buf,
187 const uint8_t* v_buf,
188 uint8_t* rgb_buf,
189 int dest_width,
190 int x,
191 int source_dx,
192 const int16_t* convert_table) {
193 for (int i = 0; i < dest_width; i += 2) {
194 int y0 = y_buf[x >> 16];
195 int y1 = y_buf[(x >> 16) + 1];
196 int u0 = u_buf[(x >> 17)];
197 int u1 = u_buf[(x >> 17) + 1];
198 int v0 = v_buf[(x >> 17)];
199 int v1 = v_buf[(x >> 17) + 1];
200 int y_frac = (x & 65535);
201 int uv_frac = ((x >> 1) & 65535);
202 int y = (y_frac * y1 + (y_frac ^ 65535) * y0) >> 16;
203 int u = (uv_frac * u1 + (uv_frac ^ 65535) * u0) >> 16;
204 int v = (uv_frac * v1 + (uv_frac ^ 65535) * v0) >> 16;
205 ConvertYUVToRGB32_C(y, u, v, rgb_buf, convert_table);
206 x += source_dx;
207 if ((i + 1) < dest_width) {
208 y0 = y_buf[x >> 16];
209 y1 = y_buf[(x >> 16) + 1];
210 y_frac = (x & 65535);
211 y = (y_frac * y1 + (y_frac ^ 65535) * y0) >> 16;
212 ConvertYUVToRGB32_C(y, u, v, rgb_buf+4, convert_table);
213 x += source_dx;
214 }
215 rgb_buf += 8;
216 }
217 }
218
219 void ConvertYUVToRGB32_C(const uint8_t* yplane,
220 const uint8_t* uplane,
221 const uint8_t* vplane,
222 uint8_t* rgbframe,
223 int width,
224 int height,
225 int ystride,
226 int uvstride,
227 int rgbstride,
228 YUVType yuv_type) {
229 unsigned int y_shift = GetVerticalShift(yuv_type);
230 const int16_t* lookup_table = GetLookupTable(yuv_type);
231 for (int y = 0; y < height; ++y) {
232 uint8_t* rgb_row = rgbframe + y * rgbstride;
233 const uint8_t* y_ptr = yplane + y * ystride;
234 const uint8_t* u_ptr = uplane + (y >> y_shift) * uvstride;
235 const uint8_t* v_ptr = vplane + (y >> y_shift) * uvstride;
236
237 ConvertYUVToRGB32Row_C(y_ptr,
238 u_ptr,
239 v_ptr,
240 rgb_row,
241 width,
242 lookup_table);
243 }
244 }
245
246 void ConvertYUVAToARGB_C(const uint8_t* yplane,
247 const uint8_t* uplane,
248 const uint8_t* vplane,
249 const uint8_t* aplane,
250 uint8_t* rgbaframe,
251 int width,
252 int height,
253 int ystride,
254 int uvstride,
255 int astride,
256 int rgbastride,
257 YUVType yuv_type) {
258 unsigned int y_shift = GetVerticalShift(yuv_type);
259 const int16_t* lookup_table = GetLookupTable(yuv_type);
260 for (int y = 0; y < height; y++) {
261 uint8_t* rgba_row = rgbaframe + y * rgbastride;
262 const uint8_t* y_ptr = yplane + y * ystride;
263 const uint8_t* u_ptr = uplane + (y >> y_shift) * uvstride;
264 const uint8_t* v_ptr = vplane + (y >> y_shift) * uvstride;
265 const uint8_t* a_ptr = aplane + y * astride;
266
267 ConvertYUVAToARGBRow_C(y_ptr,
268 u_ptr,
269 v_ptr,
270 a_ptr,
271 rgba_row,
272 width,
273 lookup_table);
274 }
275 }
276
277 } // namespace media
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