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1 /* | 1 /* |
2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/modules/desktop_capture/differ_block.h" | 11 #include "webrtc/modules/desktop_capture/differ_block.h" |
12 | 12 |
13 #include <string.h> | 13 #include <string.h> |
14 | 14 |
15 #include "build/build_config.h" | 15 #include "webrtc/typedefs.h" |
16 #include "webrtc/modules/desktop_capture/differ_block_sse2.h" | 16 #include "webrtc/modules/desktop_capture/differ_block_sse2.h" |
17 #include "webrtc/system_wrappers/include/cpu_features_wrapper.h" | 17 #include "webrtc/system_wrappers/include/cpu_features_wrapper.h" |
18 | 18 |
19 namespace webrtc { | 19 namespace webrtc { |
20 | 20 |
21 bool BlockDifference_C(const uint8_t* image1, | 21 bool BlockDifference_C(const uint8_t* image1, |
22 const uint8_t* image2, | 22 const uint8_t* image2, |
23 int stride) { | 23 int stride) { |
24 int width_bytes = kBlockSize * kBytesPerPixel; | 24 int width_bytes = kBlockSize * kBytesPerPixel; |
25 | 25 |
26 for (int y = 0; y < kBlockSize; y++) { | 26 for (int y = 0; y < kBlockSize; y++) { |
27 if (memcmp(image1, image2, width_bytes) != 0) | 27 if (memcmp(image1, image2, width_bytes) != 0) |
28 return true; | 28 return true; |
29 image1 += stride; | 29 image1 += stride; |
30 image2 += stride; | 30 image2 += stride; |
31 } | 31 } |
32 return false; | 32 return false; |
33 } | 33 } |
34 | 34 |
35 bool BlockDifference(const uint8_t* image1, | 35 bool BlockDifference(const uint8_t* image1, |
36 const uint8_t* image2, | 36 const uint8_t* image2, |
37 int stride) { | 37 int stride) { |
38 static bool (*diff_proc)(const uint8_t*, const uint8_t*, int) = NULL; | 38 static bool (*diff_proc)(const uint8_t*, const uint8_t*, int) = NULL; |
39 | 39 |
40 if (!diff_proc) { | 40 if (!diff_proc) { |
41 #if defined(ARCH_CPU_ARM_FAMILY) || defined(ARCH_CPU_MIPS_FAMILY) | 41 #if defined(WEBRTC_ARCH_ARM_FAMILY) || defined(WEBRTC_ARCH_MIPS_FAMILY) |
42 // For ARM and MIPS processors, always use C version. | 42 // For ARM and MIPS processors, always use C version. |
43 // TODO(hclam): Implement a NEON version. | 43 // TODO(hclam): Implement a NEON version. |
44 diff_proc = &BlockDifference_C; | 44 diff_proc = &BlockDifference_C; |
45 #else | 45 #else |
46 bool have_sse2 = WebRtc_GetCPUInfo(kSSE2) != 0; | 46 bool have_sse2 = WebRtc_GetCPUInfo(kSSE2) != 0; |
47 // For x86 processors, check if SSE2 is supported. | 47 // For x86 processors, check if SSE2 is supported. |
48 if (have_sse2 && kBlockSize == 32) { | 48 if (have_sse2 && kBlockSize == 32) { |
49 diff_proc = &BlockDifference_SSE2_W32; | 49 diff_proc = &BlockDifference_SSE2_W32; |
50 } else if (have_sse2 && kBlockSize == 16) { | 50 } else if (have_sse2 && kBlockSize == 16) { |
51 diff_proc = &BlockDifference_SSE2_W16; | 51 diff_proc = &BlockDifference_SSE2_W16; |
52 } else { | 52 } else { |
53 diff_proc = &BlockDifference_C; | 53 diff_proc = &BlockDifference_C; |
54 } | 54 } |
55 #endif | 55 #endif |
56 } | 56 } |
57 | 57 |
58 return diff_proc(image1, image2, stride); | 58 return diff_proc(image1, image2, stride); |
59 } | 59 } |
60 | 60 |
61 } // namespace webrtc | 61 } // namespace webrtc |
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