60 lines
2.2 KiB
Diff
60 lines
2.2 KiB
Diff
From f673675843144785658a010bab455972d83af004 Mon Sep 17 00:00:00 2001
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From: peak3d <pfau@peak3d.de>
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Date: Thu, 22 Jul 2021 11:09:37 +0200
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Subject: [PATCH] Implemented
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GetSampleIndexForTimeStamp/GetNearestSyncSampleIndex
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Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
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---
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Source/C++/Core/Ap4FragmentSampleTable.cpp | 25 ++++++++++++++++++----
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1 file changed, 21 insertions(+), 4 deletions(-)
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diff --git a/Source/C++/Core/Ap4FragmentSampleTable.cpp b/Source/C++/Core/Ap4FragmentSampleTable.cpp
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index cea5c7d..1c62f24 100644
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--- a/Source/C++/Core/Ap4FragmentSampleTable.cpp
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+++ b/Source/C++/Core/Ap4FragmentSampleTable.cpp
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@@ -297,10 +297,19 @@ AP4_FragmentSampleTable::GetSampleChunkPosition(AP4_Ordinal sample_index,
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| AP4_FragmentSampleTable::GetSampleIndexForTimeStamp
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+---------------------------------------------------------------------*/
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AP4_Result
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-AP4_FragmentSampleTable::GetSampleIndexForTimeStamp(AP4_UI64 /*ts*/,
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+AP4_FragmentSampleTable::GetSampleIndexForTimeStamp(AP4_UI64 ts,
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AP4_Ordinal& sample_index)
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{
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- sample_index = 0; // TODO
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+ if (!m_Samples.ItemCount())
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+ return AP4_ERROR_NOT_ENOUGH_DATA;
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+
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+ sample_index = 0;
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+ while (sample_index < m_Samples.ItemCount() && m_Samples[sample_index].GetCts() + m_Samples[sample_index].GetDuration() < ts)
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+ ++sample_index;
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+
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+ if (sample_index == m_Samples.ItemCount())
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+ return AP4_ERROR_NOT_ENOUGH_DATA;
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+
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return AP4_SUCCESS;
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}
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@@ -308,8 +317,16 @@ AP4_FragmentSampleTable::GetSampleIndexForTimeStamp(AP4_UI64 /*ts*/,
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| AP4_FragmentSampleTable::GetNearestSyncSampleIndex
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+---------------------------------------------------------------------*/
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AP4_Ordinal
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-AP4_FragmentSampleTable::GetNearestSyncSampleIndex(AP4_Ordinal /*sample_index*/, bool /*before*/)
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+AP4_FragmentSampleTable::GetNearestSyncSampleIndex(AP4_Ordinal sample_index, bool before)
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{
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- return 0; // TODO
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+ if (sample_index >= m_Samples.ItemCount())
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+ return sample_index;
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+
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+ AP4_Ordinal end(before ? 0 : m_Samples.ItemCount());
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+
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+ while (sample_index != end && !m_Samples[sample_index].IsSync())
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+ sample_index = sample_index + (before ? -1 : 1);
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+
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+ return sample_index;
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}
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--
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2.30.2
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