From c04dcc2e7d834218ef2d4194331e383402495ae1 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 20:07:22 +0200 Subject: Adding upstream version 2:20.4+dfsg. Signed-off-by: Daniel Baumann --- xbmc/utils/BitstreamStats.cpp | 70 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 xbmc/utils/BitstreamStats.cpp (limited to 'xbmc/utils/BitstreamStats.cpp') diff --git a/xbmc/utils/BitstreamStats.cpp b/xbmc/utils/BitstreamStats.cpp new file mode 100644 index 0000000..a35a757 --- /dev/null +++ b/xbmc/utils/BitstreamStats.cpp @@ -0,0 +1,70 @@ +/* + * Copyright (C) 2005-2018 Team Kodi + * This file is part of Kodi - https://kodi.tv + * + * SPDX-License-Identifier: GPL-2.0-or-later + * See LICENSES/README.md for more information. + */ + +#include "BitstreamStats.h" + +#include "utils/TimeUtils.h" + +int64_t BitstreamStats::m_tmFreq; + +BitstreamStats::BitstreamStats(unsigned int nEstimatedBitrate) +{ + m_dBitrate = 0.0; + m_dMaxBitrate = 0.0; + m_dMinBitrate = -1.0; + + m_nBitCount = 0; + m_nEstimatedBitrate = nEstimatedBitrate; + m_tmStart = 0LL; + + if (m_tmFreq == 0LL) + m_tmFreq = CurrentHostFrequency(); +} + +void BitstreamStats::AddSampleBytes(unsigned int nBytes) +{ + AddSampleBits(nBytes*8); +} + +void BitstreamStats::AddSampleBits(unsigned int nBits) +{ + m_nBitCount += nBits; + if (m_nBitCount >= m_nEstimatedBitrate) + CalculateBitrate(); +} + +void BitstreamStats::Start() +{ + m_nBitCount = 0; + m_tmStart = CurrentHostCounter(); +} + +void BitstreamStats::CalculateBitrate() +{ + int64_t tmNow; + tmNow = CurrentHostCounter(); + + double elapsed = (double)(tmNow - m_tmStart) / (double)m_tmFreq; + // only update once every 2 seconds + if (elapsed >= 2) + { + m_dBitrate = (double)m_nBitCount / elapsed; + + if (m_dBitrate > m_dMaxBitrate) + m_dMaxBitrate = m_dBitrate; + + if (m_dBitrate < m_dMinBitrate || m_dMinBitrate == -1) + m_dMinBitrate = m_dBitrate; + + Start(); + } +} + + + + -- cgit v1.2.3