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92ea95e34a
In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC from src/webrtc to src/ (in order to preserve an healthy git history). This CL takes care of fixing header guards, #include paths, etc... NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578 Reviewed-on: https://webrtc-review.googlesource.com/1561 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19846}
68 lines
2.5 KiB
C++
68 lines
2.5 KiB
C++
/*
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* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_VIDEO_CODING_UTILITY_VP8_HEADER_PARSER_H_
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#define MODULES_VIDEO_CODING_UTILITY_VP8_HEADER_PARSER_H_
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#include <stdint.h>
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#include <stdio.h>
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namespace webrtc {
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namespace vp8 {
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enum {
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MB_FEATURE_TREE_PROBS = 3,
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NUM_MB_SEGMENTS = 4,
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NUM_REF_LF_DELTAS = 4,
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NUM_MODE_LF_DELTAS = 4,
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};
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typedef struct VP8BitReader VP8BitReader;
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struct VP8BitReader {
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// Boolean decoder.
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uint32_t value_; // Current value.
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uint32_t range_; // Current range minus 1. In [127, 254] interval.
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int bits_; // Number of valid bits left.
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// Read buffer.
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const uint8_t* buf_; // Next byte to be read.
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const uint8_t* buf_end_; // End of read buffer.
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int eof_; // True if input is exhausted.
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};
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const uint8_t kVP8Log2Range[128] = {
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7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0};
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// range = ((range - 1) << kVP8Log2Range[range]) + 1
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const uint8_t kVP8NewRange[128] = {
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127, 127, 191, 127, 159, 191, 223, 127, 143, 159, 175, 191, 207, 223, 239,
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127, 135, 143, 151, 159, 167, 175, 183, 191, 199, 207, 215, 223, 231, 239,
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247, 127, 131, 135, 139, 143, 147, 151, 155, 159, 163, 167, 171, 175, 179,
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183, 187, 191, 195, 199, 203, 207, 211, 215, 219, 223, 227, 231, 235, 239,
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243, 247, 251, 127, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149,
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151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179,
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181, 183, 185, 187, 189, 191, 193, 195, 197, 199, 201, 203, 205, 207, 209,
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211, 213, 215, 217, 219, 221, 223, 225, 227, 229, 231, 233, 235, 237, 239,
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241, 243, 245, 247, 249, 251, 253, 127};
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// Gets the QP, QP range: [0, 127].
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// Returns true on success, false otherwise.
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bool GetQp(const uint8_t* buf, size_t length, int* qp);
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} // namespace vp8
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_UTILITY_VP8_HEADER_PARSER_H_
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