972f28335a
This is part of effort to enable HEVC for WebRTC. Parser added here to support parsing of QP/picture size for bitstream, for dynamic adaptation and stream metadata abstraction. Bug: webrtc:13485 Change-Id: I2fbdf210e72e77989ca87ce285da174df5bedd5c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/298421 Reviewed-by: Sergey Silkin <ssilkin@webrtc.org> Reviewed-by: Philip Eliasson <philipel@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Sergey Silkin <ssilkin@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40572}
25 lines
1.0 KiB
C++
25 lines
1.0 KiB
C++
/*
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* Copyright (c) 2023 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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#include "common_video/h265/h265_inline.h"
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#include <stdint.h>
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// Table used by WebRtcVideo_CountLeadingZeros32_NotBuiltin. For each uint32_t n
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// that's a sequence of 0 bits followed by a sequence of 1 bits, the entry at
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// index (n * 0x8c0b2891) >> 26 in this table gives the number of zero bits in
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// n.
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const int8_t kWebRtcVideo_CountLeadingZeros32_Table[64] = {
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32, 8, 17, -1, -1, 14, -1, -1, -1, 20, -1, -1, -1, 28, -1, 18,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 26, 25, 24,
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4, 11, 23, 31, 3, 7, 10, 16, 22, 30, -1, -1, 2, 6, 13, 9,
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-1, 15, -1, 21, -1, 29, 19, -1, -1, -1, -1, -1, 1, 27, 5, 12,
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};
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