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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // This webpage shows layout of YV12 and other YUV formats | 5 // This webpage shows layout of YV12 and other YUV formats |
| 6 // http://www.fourcc.org/yuv.php | 6 // http://www.fourcc.org/yuv.php |
| 7 // The actual conversion is best described here | 7 // The actual conversion is best described here |
| 8 // http://en.wikipedia.org/wiki/YUV | 8 // http://en.wikipedia.org/wiki/YUV |
| 9 // An article on optimizing YUV conversion using tables instead of multiplies | 9 // An article on optimizing YUV conversion using tables instead of multiplies |
| 10 // http://lestourtereaux.free.fr/papers/data/yuvrgb.pdf | 10 // http://lestourtereaux.free.fr/papers/data/yuvrgb.pdf |
| 11 // | 11 // |
| 12 // YV12 is a full plane of Y and a half height, half width chroma planes | 12 // YV12 is a full plane of Y and a half height, half width chroma planes |
| 13 // YV16 is a full plane of Y and a full height, half width chroma planes | 13 // YV16 is a full plane of Y and a full height, half width chroma planes |
| 14 // | 14 // |
| 15 // ARGB pixel format is output, which on little endian is stored as BGRA. | 15 // ARGB pixel format is output, which on little endian is stored as BGRA. |
| 16 // The alpha is set to 255, allowing the application to use RGBA or RGB32. | 16 // The alpha is set to 255, allowing the application to use RGBA or RGB32. |
| 17 | 17 |
| 18 #include "media/base/yuv_convert.h" | 18 #include "media/base/yuv_convert.h" |
| 19 | 19 |
| 20 #include "base/logging.h" | 20 #include "base/logging.h" |
| 21 #include "build/build_config.h" | 21 #include "build/build_config.h" |
| 22 #include "media/base/cpu_features.h" | 22 #include "media/base/cpu_features.h" |
| 23 #include "media/base/simd/convert_rgb_to_yuv.h" | 23 #include "media/base/simd/convert_rgb_to_yuv.h" |
| 24 #include "media/base/simd/convert_yuv_to_rgb.h" | 24 #include "media/base/simd/convert_yuv_to_rgb.h" |
| 25 #include "media/base/simd/filter_yuv.h" | 25 #include "media/base/simd/filter_yuv.h" |
| 26 #include "media/base/yuv_convert_internal.h" | |
| 27 #include "media/base/yuv_row.h" | |
| 28 | 26 |
| 29 #if defined(ARCH_CPU_X86_FAMILY) | 27 #if defined(ARCH_CPU_X86_FAMILY) |
| 30 #if defined(_MSC_VER) | 28 #if defined(_MSC_VER) |
| 31 #include <intrin.h> | 29 #include <intrin.h> |
| 32 #else | 30 #else |
| 33 #include <emmintrin.h> | 31 #include <emmintrin.h> |
| 34 #include <mmintrin.h> | 32 #include <mmintrin.h> |
| 35 #endif | 33 #endif |
| 36 #endif | 34 #endif |
| 37 | 35 |
| (...skipping 298 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 336 rgbstride, ystride, uvstride); | 334 rgbstride, ystride, uvstride); |
| 337 #endif | 335 #endif |
| 338 } | 336 } |
| 339 | 337 |
| 340 void ConvertYUY2ToYUV(const uint8* src, | 338 void ConvertYUY2ToYUV(const uint8* src, |
| 341 uint8* yplane, | 339 uint8* yplane, |
| 342 uint8* uplane, | 340 uint8* uplane, |
| 343 uint8* vplane, | 341 uint8* vplane, |
| 344 int width, | 342 int width, |
| 345 int height) { | 343 int height) { |
| 346 ConvertYUY2ToYUV_C(src, yplane, uplane, vplane, width, height); | 344 for (int i = 0; i < height / 2; ++i) { |
| 345 for (int j = 0; j < (width / 2); ++j) { |
| 346 yplane[0] = src[0]; |
| 347 *uplane = src[1]; |
| 348 yplane[1] = src[2]; |
| 349 *vplane = src[3]; |
| 350 src += 4; |
| 351 yplane += 2; |
| 352 uplane++; |
| 353 vplane++; |
| 354 } |
| 355 for (int j = 0; j < (width / 2); ++j) { |
| 356 yplane[0] = src[0]; |
| 357 yplane[1] = src[2]; |
| 358 src += 4; |
| 359 yplane += 2; |
| 360 } |
| 361 } |
| 347 } | 362 } |
| 348 | 363 |
| 349 void ConvertYUVToRGB32(const uint8* yplane, | 364 void ConvertYUVToRGB32(const uint8* yplane, |
| 350 const uint8* uplane, | 365 const uint8* uplane, |
| 351 const uint8* vplane, | 366 const uint8* vplane, |
| 352 uint8* rgbframe, | 367 uint8* rgbframe, |
| 353 int width, | 368 int width, |
| 354 int height, | 369 int height, |
| 355 int ystride, | 370 int ystride, |
| 356 int uvstride, | 371 int uvstride, |
| (...skipping 12 matching lines...) Expand all Loading... |
| 369 else | 384 else |
| 370 convert_proc = &ConvertYUVToRGB32_C; | 385 convert_proc = &ConvertYUVToRGB32_C; |
| 371 } | 386 } |
| 372 | 387 |
| 373 convert_proc(yplane, uplane, vplane, rgbframe, | 388 convert_proc(yplane, uplane, vplane, rgbframe, |
| 374 width, height, ystride, uvstride, rgbstride, yuv_type); | 389 width, height, ystride, uvstride, rgbstride, yuv_type); |
| 375 #endif | 390 #endif |
| 376 } | 391 } |
| 377 | 392 |
| 378 } // namespace media | 393 } // namespace media |
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