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| 1 /* | 1 /* |
| 2 * libjingle | 2 * libjingle |
| 3 * Copyright 2014 Google Inc. | 3 * Copyright 2014 Google Inc. |
| 4 * | 4 * |
| 5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
| 6 * modification, are permitted provided that the following conditions are met: | 6 * modification, are permitted provided that the following conditions are met: |
| 7 * | 7 * |
| 8 * 1. Redistributions of source code must retain the above copyright notice, | 8 * 1. Redistributions of source code must retain the above copyright notice, |
| 9 * this list of conditions and the following disclaimer. | 9 * this list of conditions and the following disclaimer. |
| 10 * 2. Redistributions in binary form must reproduce the above copyright notice, | 10 * 2. Redistributions in binary form must reproduce the above copyright notice, |
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| 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 */ | 26 */ |
| 27 | 27 |
| 28 #include <stdio.h> | 28 #include <stdio.h> |
| 29 | 29 |
| 30 #include "talk/media/base/streamparams.h" | 30 #include "talk/media/base/streamparams.h" |
| 31 #include "talk/media/webrtc/simulcast.h" | 31 #include "talk/media/webrtc/simulcast.h" |
| 32 #include "webrtc/base/arraysize.h" |
| 32 #include "webrtc/base/common.h" | 33 #include "webrtc/base/common.h" |
| 33 #include "webrtc/base/logging.h" | 34 #include "webrtc/base/logging.h" |
| 34 #include "webrtc/system_wrappers/include/field_trial.h" | 35 #include "webrtc/system_wrappers/include/field_trial.h" |
| 36 |
| 35 namespace cricket { | 37 namespace cricket { |
| 36 | 38 |
| 37 struct SimulcastFormat { | 39 struct SimulcastFormat { |
| 38 int width; | 40 int width; |
| 39 int height; | 41 int height; |
| 40 // The maximum number of simulcast layers can be used for | 42 // The maximum number of simulcast layers can be used for |
| 41 // resolutions at |widthxheigh|. | 43 // resolutions at |widthxheigh|. |
| 42 size_t max_layers; | 44 size_t max_layers; |
| 43 // The maximum bitrate for encoding stream at |widthxheight|, when we are | 45 // The maximum bitrate for encoding stream at |widthxheight|, when we are |
| 44 // not sending the next higher spatial stream. | 46 // not sending the next higher spatial stream. |
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| 86 if (*width < *height) { | 88 if (*width < *height) { |
| 87 int temp = *width; | 89 int temp = *width; |
| 88 *width = *height; | 90 *width = *height; |
| 89 *height = temp; | 91 *height = temp; |
| 90 } | 92 } |
| 91 } | 93 } |
| 92 | 94 |
| 93 int FindSimulcastFormatIndex(int width, int height) { | 95 int FindSimulcastFormatIndex(int width, int height) { |
| 94 MaybeExchangeWidthHeight(&width, &height); | 96 MaybeExchangeWidthHeight(&width, &height); |
| 95 | 97 |
| 96 for (int i = 0; i < ARRAY_SIZE(kSimulcastFormats); ++i) { | 98 for (int i = 0; i < arraysize(kSimulcastFormats); ++i) { |
| 97 if (width >= kSimulcastFormats[i].width && | 99 if (width >= kSimulcastFormats[i].width && |
| 98 height >= kSimulcastFormats[i].height) { | 100 height >= kSimulcastFormats[i].height) { |
| 99 return i; | 101 return i; |
| 100 } | 102 } |
| 101 } | 103 } |
| 102 return -1; | 104 return -1; |
| 103 } | 105 } |
| 104 | 106 |
| 105 int FindSimulcastFormatIndex(int width, int height, size_t max_layers) { | 107 int FindSimulcastFormatIndex(int width, int height, size_t max_layers) { |
| 106 MaybeExchangeWidthHeight(&width, &height); | 108 MaybeExchangeWidthHeight(&width, &height); |
| 107 | 109 |
| 108 for (int i = 0; i < ARRAY_SIZE(kSimulcastFormats); ++i) { | 110 for (int i = 0; i < arraysize(kSimulcastFormats); ++i) { |
| 109 if (width >= kSimulcastFormats[i].width && | 111 if (width >= kSimulcastFormats[i].width && |
| 110 height >= kSimulcastFormats[i].height && | 112 height >= kSimulcastFormats[i].height && |
| 111 max_layers == kSimulcastFormats[i].max_layers) { | 113 max_layers == kSimulcastFormats[i].max_layers) { |
| 112 return i; | 114 return i; |
| 113 } | 115 } |
| 114 } | 116 } |
| 115 return -1; | 117 return -1; |
| 116 } | 118 } |
| 117 | 119 |
| 118 // Simulcast stream width and height must both be dividable by | 120 // Simulcast stream width and height must both be dividable by |
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| 282 return false; | 284 return false; |
| 283 } | 285 } |
| 284 | 286 |
| 285 config->tl0_bitrate_kbps = tl0_bitrate; | 287 config->tl0_bitrate_kbps = tl0_bitrate; |
| 286 config->tl1_bitrate_kbps = tl1_bitrate; | 288 config->tl1_bitrate_kbps = tl1_bitrate; |
| 287 | 289 |
| 288 return true; | 290 return true; |
| 289 } | 291 } |
| 290 | 292 |
| 291 } // namespace cricket | 293 } // namespace cricket |
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