c3378771b3
Pulling libwebm from upstream
Changes from upstream:
249629d make Mkv(Reader|Writer)(FILE*) explicit
7f3cda4 mkvparser: fix a bunch of windows warnings
5c06178 Merge "clang-format on mkvparser.[ch]pp"
4df111e clang-format on mkvparser.[ch]pp
7b24501 clang-format re-run.
c6767b9 Change AlignTrailingComments to false in .clang-format
9097a06 Merge "muxer: Reject file if TrackType is never specified"
eddf974 Merge "clang-format on mkvmuxertypes.hpp and webmids.hpp"
def325c muxer: Reject file if TrackType is never specified
41f869c Merge "clang-format on webvttparser.(cc|h)"
fd0be37 clang-format on webvttparser.(cc|h)
207d8a1 Merge "clang-format on mkvmuxerutil.[ch]pp"
02429eb Merge "clang-format on mkvwriter.[ch]pp"
0cf7b1b Merge "clang-format on mkvreader.[ch]pp"
2e80fed Merge "clang-format on sample.cpp"
3402e12 Merge "clang-format on sample_muxer.cpp"
1a685db Merge "clang-format on sample_muxer_metadata.(cc|h)"
6634c7f Merge "clang-format on vttreader.cc"
7566004 Merge "clang-format on vttdemux.cc"
9915b84 clang-format on mkvreader.[ch]pp
7437254 clang-format on mkvmuxertypes.hpp and webmids.hpp
0d5a98c clang-format on sample_muxer.cpp
e3485c9 clang-format on vttdemux.cc
46cc823 clang-format on dumpvtt.cc
5218bd2 clang-format on vttreader.cc
1a0130d clang-format on sample_muxer_metadata.(cc|h)
867f189 clang-format on sample.cpp
4c7bec5 clang-format on mkvwriter.[ch]pp
9ead078 clang-format on mkvmuxerutil.[ch]pp
fb6b6e6 clang-format on mkvmuxer.[ch]pp
ce77592 Update .clang-format to allow short functions in one line
0a24fe4 Merge "Add support for DateUTC and DefaultDuration in MKV Muxer."
11d5b66 Merge "Add .clang-format"
a1a3b14 Add .clang-format
0fcec38 Add support for DateUTC and DefaultDuration in MKV Muxer.
Change-Id: Ia0ed161ffc3d63c2eba8ed145707ffe543617976
3076 lines
83 KiB
C++
3076 lines
83 KiB
C++
// Copyright (c) 2012 The WebM 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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#include "mkvmuxer.hpp"
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#include <climits>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <ctime>
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#include <new>
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#include "mkvmuxerutil.hpp"
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#include "mkvparser.hpp"
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#include "mkvwriter.hpp"
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#include "webmids.hpp"
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#ifdef _MSC_VER
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// Disable MSVC warnings that suggest making code non-portable.
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#pragma warning(disable : 4996)
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#endif
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namespace mkvmuxer {
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namespace {
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// Deallocate the string designated by |dst|, and then copy the |src|
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// string to |dst|. The caller owns both the |src| string and the
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// |dst| copy (hence the caller is responsible for eventually
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// deallocating the strings, either directly, or indirectly via
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// StrCpy). Returns true if the source string was successfully copied
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// to the destination.
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bool StrCpy(const char* src, char** dst_ptr) {
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if (dst_ptr == NULL)
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return false;
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char*& dst = *dst_ptr;
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delete[] dst;
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dst = NULL;
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if (src == NULL)
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return true;
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const size_t size = strlen(src) + 1;
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dst = new (std::nothrow) char[size]; // NOLINT
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if (dst == NULL)
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return false;
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strcpy(dst, src); // NOLINT
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return true;
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}
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} // namespace
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///////////////////////////////////////////////////////////////
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//
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// IMkvWriter Class
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IMkvWriter::IMkvWriter() {}
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IMkvWriter::~IMkvWriter() {}
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bool WriteEbmlHeader(IMkvWriter* writer) {
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// Level 0
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uint64 size = EbmlElementSize(kMkvEBMLVersion, 1ULL);
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size += EbmlElementSize(kMkvEBMLReadVersion, 1ULL);
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size += EbmlElementSize(kMkvEBMLMaxIDLength, 4ULL);
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size += EbmlElementSize(kMkvEBMLMaxSizeLength, 8ULL);
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size += EbmlElementSize(kMkvDocType, "webm");
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size += EbmlElementSize(kMkvDocTypeVersion, 2ULL);
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size += EbmlElementSize(kMkvDocTypeReadVersion, 2ULL);
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if (!WriteEbmlMasterElement(writer, kMkvEBML, size))
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return false;
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if (!WriteEbmlElement(writer, kMkvEBMLVersion, 1ULL))
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return false;
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if (!WriteEbmlElement(writer, kMkvEBMLReadVersion, 1ULL))
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return false;
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if (!WriteEbmlElement(writer, kMkvEBMLMaxIDLength, 4ULL))
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return false;
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if (!WriteEbmlElement(writer, kMkvEBMLMaxSizeLength, 8ULL))
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return false;
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if (!WriteEbmlElement(writer, kMkvDocType, "webm"))
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return false;
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if (!WriteEbmlElement(writer, kMkvDocTypeVersion, 2ULL))
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return false;
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if (!WriteEbmlElement(writer, kMkvDocTypeReadVersion, 2ULL))
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return false;
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return true;
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}
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bool ChunkedCopy(mkvparser::IMkvReader* source, mkvmuxer::IMkvWriter* dst,
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mkvmuxer::int64 start, int64 size) {
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// TODO(vigneshv): Check if this is a reasonable value.
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const uint32 kBufSize = 2048;
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uint8* buf = new uint8[kBufSize];
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int64 offset = start;
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while (size > 0) {
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const int64 read_len = (size > kBufSize) ? kBufSize : size;
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if (source->Read(offset, static_cast<long>(read_len), buf))
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return false;
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dst->Write(buf, static_cast<uint32>(read_len));
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offset += read_len;
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size -= read_len;
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}
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delete[] buf;
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return true;
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}
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///////////////////////////////////////////////////////////////
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//
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// Frame Class
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Frame::Frame()
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: add_id_(0),
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additional_(NULL),
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additional_length_(0),
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duration_(0),
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frame_(NULL),
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is_key_(false),
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length_(0),
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track_number_(0),
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timestamp_(0),
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discard_padding_(0) {}
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Frame::~Frame() {
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delete[] frame_;
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delete[] additional_;
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}
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bool Frame::Init(const uint8* frame, uint64 length) {
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uint8* const data =
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new (std::nothrow) uint8[static_cast<size_t>(length)]; // NOLINT
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if (!data)
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return false;
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delete[] frame_;
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frame_ = data;
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length_ = length;
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memcpy(frame_, frame, static_cast<size_t>(length_));
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return true;
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}
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bool Frame::AddAdditionalData(const uint8* additional, uint64 length,
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uint64 add_id) {
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uint8* const data =
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new (std::nothrow) uint8[static_cast<size_t>(length)]; // NOLINT
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if (!data)
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return false;
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delete[] additional_;
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additional_ = data;
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additional_length_ = length;
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add_id_ = add_id;
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memcpy(additional_, additional, static_cast<size_t>(additional_length_));
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return true;
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}
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///////////////////////////////////////////////////////////////
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//
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// CuePoint Class
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CuePoint::CuePoint()
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: time_(0),
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track_(0),
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cluster_pos_(0),
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block_number_(1),
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output_block_number_(true) {}
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CuePoint::~CuePoint() {}
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bool CuePoint::Write(IMkvWriter* writer) const {
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if (!writer || track_ < 1 || cluster_pos_ < 1)
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return false;
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uint64 size = EbmlElementSize(kMkvCueClusterPosition, cluster_pos_);
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size += EbmlElementSize(kMkvCueTrack, track_);
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if (output_block_number_ && block_number_ > 1)
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size += EbmlElementSize(kMkvCueBlockNumber, block_number_);
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const uint64 track_pos_size =
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EbmlMasterElementSize(kMkvCueTrackPositions, size) + size;
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const uint64 payload_size =
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EbmlElementSize(kMkvCueTime, time_) + track_pos_size;
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if (!WriteEbmlMasterElement(writer, kMkvCuePoint, payload_size))
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return false;
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const int64 payload_position = writer->Position();
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if (payload_position < 0)
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return false;
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if (!WriteEbmlElement(writer, kMkvCueTime, time_))
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return false;
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if (!WriteEbmlMasterElement(writer, kMkvCueTrackPositions, size))
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return false;
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if (!WriteEbmlElement(writer, kMkvCueTrack, track_))
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return false;
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if (!WriteEbmlElement(writer, kMkvCueClusterPosition, cluster_pos_))
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return false;
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if (output_block_number_ && block_number_ > 1)
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if (!WriteEbmlElement(writer, kMkvCueBlockNumber, block_number_))
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return false;
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const int64 stop_position = writer->Position();
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if (stop_position < 0)
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return false;
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if (stop_position - payload_position != static_cast<int64>(payload_size))
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return false;
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return true;
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}
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uint64 CuePoint::PayloadSize() const {
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uint64 size = EbmlElementSize(kMkvCueClusterPosition, cluster_pos_);
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size += EbmlElementSize(kMkvCueTrack, track_);
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if (output_block_number_ && block_number_ > 1)
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size += EbmlElementSize(kMkvCueBlockNumber, block_number_);
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const uint64 track_pos_size =
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EbmlMasterElementSize(kMkvCueTrackPositions, size) + size;
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const uint64 payload_size =
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EbmlElementSize(kMkvCueTime, time_) + track_pos_size;
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return payload_size;
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}
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uint64 CuePoint::Size() const {
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const uint64 payload_size = PayloadSize();
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return EbmlMasterElementSize(kMkvCuePoint, payload_size) + payload_size;
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}
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///////////////////////////////////////////////////////////////
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//
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// Cues Class
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Cues::Cues()
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: cue_entries_capacity_(0),
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cue_entries_size_(0),
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cue_entries_(NULL),
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output_block_number_(true) {}
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Cues::~Cues() {
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if (cue_entries_) {
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for (int32 i = 0; i < cue_entries_size_; ++i) {
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CuePoint* const cue = cue_entries_[i];
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delete cue;
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}
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delete[] cue_entries_;
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}
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}
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bool Cues::AddCue(CuePoint* cue) {
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if (!cue)
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return false;
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if ((cue_entries_size_ + 1) > cue_entries_capacity_) {
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// Add more CuePoints.
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const int32 new_capacity =
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(!cue_entries_capacity_) ? 2 : cue_entries_capacity_ * 2;
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if (new_capacity < 1)
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return false;
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CuePoint** const cues =
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new (std::nothrow) CuePoint* [new_capacity]; // NOLINT
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if (!cues)
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return false;
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for (int32 i = 0; i < cue_entries_size_; ++i) {
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cues[i] = cue_entries_[i];
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}
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delete[] cue_entries_;
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cue_entries_ = cues;
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cue_entries_capacity_ = new_capacity;
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}
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cue->set_output_block_number(output_block_number_);
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cue_entries_[cue_entries_size_++] = cue;
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return true;
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}
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CuePoint* Cues::GetCueByIndex(int32 index) const {
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if (cue_entries_ == NULL)
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return NULL;
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if (index >= cue_entries_size_)
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return NULL;
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return cue_entries_[index];
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}
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uint64 Cues::Size() {
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uint64 size = 0;
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for (int32 i = 0; i < cue_entries_size_; ++i)
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size += GetCueByIndex(i)->Size();
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size += EbmlMasterElementSize(kMkvCues, size);
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return size;
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}
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bool Cues::Write(IMkvWriter* writer) const {
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if (!writer)
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return false;
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uint64 size = 0;
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for (int32 i = 0; i < cue_entries_size_; ++i) {
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const CuePoint* const cue = GetCueByIndex(i);
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if (!cue)
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return false;
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size += cue->Size();
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}
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if (!WriteEbmlMasterElement(writer, kMkvCues, size))
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return false;
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const int64 payload_position = writer->Position();
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if (payload_position < 0)
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return false;
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for (int32 i = 0; i < cue_entries_size_; ++i) {
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const CuePoint* const cue = GetCueByIndex(i);
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if (!cue->Write(writer))
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return false;
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}
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const int64 stop_position = writer->Position();
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if (stop_position < 0)
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return false;
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if (stop_position - payload_position != static_cast<int64>(size))
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return false;
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return true;
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}
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///////////////////////////////////////////////////////////////
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//
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// ContentEncAESSettings Class
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ContentEncAESSettings::ContentEncAESSettings() : cipher_mode_(kCTR) {}
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uint64 ContentEncAESSettings::Size() const {
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const uint64 payload = PayloadSize();
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const uint64 size =
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EbmlMasterElementSize(kMkvContentEncAESSettings, payload) + payload;
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return size;
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}
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bool ContentEncAESSettings::Write(IMkvWriter* writer) const {
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const uint64 payload = PayloadSize();
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if (!WriteEbmlMasterElement(writer, kMkvContentEncAESSettings, payload))
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return false;
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const int64 payload_position = writer->Position();
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if (payload_position < 0)
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return false;
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if (!WriteEbmlElement(writer, kMkvAESSettingsCipherMode, cipher_mode_))
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return false;
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const int64 stop_position = writer->Position();
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if (stop_position < 0 ||
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stop_position - payload_position != static_cast<int64>(payload))
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return false;
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return true;
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}
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uint64 ContentEncAESSettings::PayloadSize() const {
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uint64 size = EbmlElementSize(kMkvAESSettingsCipherMode, cipher_mode_);
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return size;
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}
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///////////////////////////////////////////////////////////////
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//
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// ContentEncoding Class
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ContentEncoding::ContentEncoding()
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: enc_algo_(5),
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enc_key_id_(NULL),
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encoding_order_(0),
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encoding_scope_(1),
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encoding_type_(1),
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enc_key_id_length_(0) {}
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ContentEncoding::~ContentEncoding() { delete[] enc_key_id_; }
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bool ContentEncoding::SetEncryptionID(const uint8* id, uint64 length) {
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if (!id || length < 1)
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return false;
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delete[] enc_key_id_;
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enc_key_id_ =
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new (std::nothrow) uint8[static_cast<size_t>(length)]; // NOLINT
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if (!enc_key_id_)
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return false;
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memcpy(enc_key_id_, id, static_cast<size_t>(length));
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enc_key_id_length_ = length;
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return true;
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}
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uint64 ContentEncoding::Size() const {
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const uint64 encryption_size = EncryptionSize();
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const uint64 encoding_size = EncodingSize(0, encryption_size);
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const uint64 encodings_size =
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EbmlMasterElementSize(kMkvContentEncoding, encoding_size) + encoding_size;
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return encodings_size;
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}
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bool ContentEncoding::Write(IMkvWriter* writer) const {
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const uint64 encryption_size = EncryptionSize();
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const uint64 encoding_size = EncodingSize(0, encryption_size);
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const uint64 size =
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EbmlMasterElementSize(kMkvContentEncoding, encoding_size) + encoding_size;
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const int64 payload_position = writer->Position();
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if (payload_position < 0)
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return false;
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if (!WriteEbmlMasterElement(writer, kMkvContentEncoding, encoding_size))
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return false;
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if (!WriteEbmlElement(writer, kMkvContentEncodingOrder, encoding_order_))
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return false;
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if (!WriteEbmlElement(writer, kMkvContentEncodingScope, encoding_scope_))
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return false;
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if (!WriteEbmlElement(writer, kMkvContentEncodingType, encoding_type_))
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return false;
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if (!WriteEbmlMasterElement(writer, kMkvContentEncryption, encryption_size))
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return false;
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if (!WriteEbmlElement(writer, kMkvContentEncAlgo, enc_algo_))
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return false;
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if (!WriteEbmlElement(writer, kMkvContentEncKeyID, enc_key_id_,
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enc_key_id_length_))
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return false;
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if (!enc_aes_settings_.Write(writer))
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return false;
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const int64 stop_position = writer->Position();
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if (stop_position < 0 ||
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stop_position - payload_position != static_cast<int64>(size))
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return false;
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return true;
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}
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uint64 ContentEncoding::EncodingSize(uint64 compresion_size,
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uint64 encryption_size) const {
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// TODO(fgalligan): Add support for compression settings.
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if (compresion_size != 0)
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return 0;
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uint64 encoding_size = 0;
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if (encryption_size > 0) {
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encoding_size +=
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EbmlMasterElementSize(kMkvContentEncryption, encryption_size) +
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encryption_size;
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}
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encoding_size += EbmlElementSize(kMkvContentEncodingType, encoding_type_);
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encoding_size += EbmlElementSize(kMkvContentEncodingScope, encoding_scope_);
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encoding_size += EbmlElementSize(kMkvContentEncodingOrder, encoding_order_);
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return encoding_size;
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}
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uint64 ContentEncoding::EncryptionSize() const {
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const uint64 aes_size = enc_aes_settings_.Size();
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uint64 encryption_size =
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EbmlElementSize(kMkvContentEncKeyID, enc_key_id_, enc_key_id_length_);
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encryption_size += EbmlElementSize(kMkvContentEncAlgo, enc_algo_);
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return encryption_size + aes_size;
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}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// Track Class
|
|
|
|
Track::Track(unsigned int* seed)
|
|
: codec_id_(NULL),
|
|
codec_private_(NULL),
|
|
language_(NULL),
|
|
max_block_additional_id_(0),
|
|
name_(NULL),
|
|
number_(0),
|
|
type_(0),
|
|
uid_(MakeUID(seed)),
|
|
codec_delay_(0),
|
|
seek_pre_roll_(0),
|
|
default_duration_(0),
|
|
codec_private_length_(0),
|
|
content_encoding_entries_(NULL),
|
|
content_encoding_entries_size_(0) {}
|
|
|
|
Track::~Track() {
|
|
delete[] codec_id_;
|
|
delete[] codec_private_;
|
|
delete[] language_;
|
|
delete[] name_;
|
|
|
|
if (content_encoding_entries_) {
|
|
for (uint32 i = 0; i < content_encoding_entries_size_; ++i) {
|
|
ContentEncoding* const encoding = content_encoding_entries_[i];
|
|
delete encoding;
|
|
}
|
|
delete[] content_encoding_entries_;
|
|
}
|
|
}
|
|
|
|
bool Track::AddContentEncoding() {
|
|
const uint32 count = content_encoding_entries_size_ + 1;
|
|
|
|
ContentEncoding** const content_encoding_entries =
|
|
new (std::nothrow) ContentEncoding* [count]; // NOLINT
|
|
if (!content_encoding_entries)
|
|
return false;
|
|
|
|
ContentEncoding* const content_encoding =
|
|
new (std::nothrow) ContentEncoding(); // NOLINT
|
|
if (!content_encoding) {
|
|
delete[] content_encoding_entries;
|
|
return false;
|
|
}
|
|
|
|
for (uint32 i = 0; i < content_encoding_entries_size_; ++i) {
|
|
content_encoding_entries[i] = content_encoding_entries_[i];
|
|
}
|
|
|
|
delete[] content_encoding_entries_;
|
|
|
|
content_encoding_entries_ = content_encoding_entries;
|
|
content_encoding_entries_[content_encoding_entries_size_] = content_encoding;
|
|
content_encoding_entries_size_ = count;
|
|
return true;
|
|
}
|
|
|
|
ContentEncoding* Track::GetContentEncodingByIndex(uint32 index) const {
|
|
if (content_encoding_entries_ == NULL)
|
|
return NULL;
|
|
|
|
if (index >= content_encoding_entries_size_)
|
|
return NULL;
|
|
|
|
return content_encoding_entries_[index];
|
|
}
|
|
|
|
uint64 Track::PayloadSize() const {
|
|
uint64 size = EbmlElementSize(kMkvTrackNumber, number_);
|
|
size += EbmlElementSize(kMkvTrackUID, uid_);
|
|
size += EbmlElementSize(kMkvTrackType, type_);
|
|
if (codec_id_)
|
|
size += EbmlElementSize(kMkvCodecID, codec_id_);
|
|
if (codec_private_)
|
|
size += EbmlElementSize(kMkvCodecPrivate, codec_private_,
|
|
codec_private_length_);
|
|
if (language_)
|
|
size += EbmlElementSize(kMkvLanguage, language_);
|
|
if (name_)
|
|
size += EbmlElementSize(kMkvName, name_);
|
|
if (max_block_additional_id_)
|
|
size += EbmlElementSize(kMkvMaxBlockAdditionID, max_block_additional_id_);
|
|
if (codec_delay_)
|
|
size += EbmlElementSize(kMkvCodecDelay, codec_delay_);
|
|
if (seek_pre_roll_)
|
|
size += EbmlElementSize(kMkvSeekPreRoll, seek_pre_roll_);
|
|
if (default_duration_)
|
|
size += EbmlElementSize(kMkvDefaultDuration, default_duration_);
|
|
|
|
if (content_encoding_entries_size_ > 0) {
|
|
uint64 content_encodings_size = 0;
|
|
for (uint32 i = 0; i < content_encoding_entries_size_; ++i) {
|
|
ContentEncoding* const encoding = content_encoding_entries_[i];
|
|
content_encodings_size += encoding->Size();
|
|
}
|
|
|
|
size +=
|
|
EbmlMasterElementSize(kMkvContentEncodings, content_encodings_size) +
|
|
content_encodings_size;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
uint64 Track::Size() const {
|
|
uint64 size = PayloadSize();
|
|
size += EbmlMasterElementSize(kMkvTrackEntry, size);
|
|
return size;
|
|
}
|
|
|
|
bool Track::Write(IMkvWriter* writer) const {
|
|
if (!writer)
|
|
return false;
|
|
|
|
// |size| may be bigger than what is written out in this function because
|
|
// derived classes may write out more data in the Track element.
|
|
const uint64 payload_size = PayloadSize();
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvTrackEntry, payload_size))
|
|
return false;
|
|
|
|
// |type_| has to be specified before the Track can be written.
|
|
if (!type_)
|
|
return false;
|
|
|
|
uint64 size = EbmlElementSize(kMkvTrackNumber, number_);
|
|
size += EbmlElementSize(kMkvTrackUID, uid_);
|
|
size += EbmlElementSize(kMkvTrackType, type_);
|
|
if (codec_id_)
|
|
size += EbmlElementSize(kMkvCodecID, codec_id_);
|
|
if (codec_private_)
|
|
size += EbmlElementSize(kMkvCodecPrivate, codec_private_,
|
|
codec_private_length_);
|
|
if (language_)
|
|
size += EbmlElementSize(kMkvLanguage, language_);
|
|
if (name_)
|
|
size += EbmlElementSize(kMkvName, name_);
|
|
if (max_block_additional_id_)
|
|
size += EbmlElementSize(kMkvMaxBlockAdditionID, max_block_additional_id_);
|
|
if (codec_delay_)
|
|
size += EbmlElementSize(kMkvCodecDelay, codec_delay_);
|
|
if (seek_pre_roll_)
|
|
size += EbmlElementSize(kMkvSeekPreRoll, seek_pre_roll_);
|
|
if (default_duration_)
|
|
size += EbmlElementSize(kMkvDefaultDuration, default_duration_);
|
|
|
|
const int64 payload_position = writer->Position();
|
|
if (payload_position < 0)
|
|
return false;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvTrackNumber, number_))
|
|
return false;
|
|
if (!WriteEbmlElement(writer, kMkvTrackUID, uid_))
|
|
return false;
|
|
if (!WriteEbmlElement(writer, kMkvTrackType, type_))
|
|
return false;
|
|
if (max_block_additional_id_) {
|
|
if (!WriteEbmlElement(writer, kMkvMaxBlockAdditionID,
|
|
max_block_additional_id_)) {
|
|
return false;
|
|
}
|
|
}
|
|
if (codec_delay_) {
|
|
if (!WriteEbmlElement(writer, kMkvCodecDelay, codec_delay_))
|
|
return false;
|
|
}
|
|
if (seek_pre_roll_) {
|
|
if (!WriteEbmlElement(writer, kMkvSeekPreRoll, seek_pre_roll_))
|
|
return false;
|
|
}
|
|
if (default_duration_) {
|
|
if (!WriteEbmlElement(writer, kMkvDefaultDuration, default_duration_))
|
|
return false;
|
|
}
|
|
if (codec_id_) {
|
|
if (!WriteEbmlElement(writer, kMkvCodecID, codec_id_))
|
|
return false;
|
|
}
|
|
if (codec_private_) {
|
|
if (!WriteEbmlElement(writer, kMkvCodecPrivate, codec_private_,
|
|
codec_private_length_))
|
|
return false;
|
|
}
|
|
if (language_) {
|
|
if (!WriteEbmlElement(writer, kMkvLanguage, language_))
|
|
return false;
|
|
}
|
|
if (name_) {
|
|
if (!WriteEbmlElement(writer, kMkvName, name_))
|
|
return false;
|
|
}
|
|
|
|
int64 stop_position = writer->Position();
|
|
if (stop_position < 0 ||
|
|
stop_position - payload_position != static_cast<int64>(size))
|
|
return false;
|
|
|
|
if (content_encoding_entries_size_ > 0) {
|
|
uint64 content_encodings_size = 0;
|
|
for (uint32 i = 0; i < content_encoding_entries_size_; ++i) {
|
|
ContentEncoding* const encoding = content_encoding_entries_[i];
|
|
content_encodings_size += encoding->Size();
|
|
}
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvContentEncodings,
|
|
content_encodings_size))
|
|
return false;
|
|
|
|
for (uint32 i = 0; i < content_encoding_entries_size_; ++i) {
|
|
ContentEncoding* const encoding = content_encoding_entries_[i];
|
|
if (!encoding->Write(writer))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
stop_position = writer->Position();
|
|
if (stop_position < 0)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool Track::SetCodecPrivate(const uint8* codec_private, uint64 length) {
|
|
if (!codec_private || length < 1)
|
|
return false;
|
|
|
|
delete[] codec_private_;
|
|
|
|
codec_private_ =
|
|
new (std::nothrow) uint8[static_cast<size_t>(length)]; // NOLINT
|
|
if (!codec_private_)
|
|
return false;
|
|
|
|
memcpy(codec_private_, codec_private, static_cast<size_t>(length));
|
|
codec_private_length_ = length;
|
|
|
|
return true;
|
|
}
|
|
|
|
void Track::set_codec_id(const char* codec_id) {
|
|
if (codec_id) {
|
|
delete[] codec_id_;
|
|
|
|
const size_t length = strlen(codec_id) + 1;
|
|
codec_id_ = new (std::nothrow) char[length]; // NOLINT
|
|
if (codec_id_) {
|
|
#ifdef _MSC_VER
|
|
strcpy_s(codec_id_, length, codec_id);
|
|
#else
|
|
strcpy(codec_id_, codec_id);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO(fgalligan): Vet the language parameter.
|
|
void Track::set_language(const char* language) {
|
|
if (language) {
|
|
delete[] language_;
|
|
|
|
const size_t length = strlen(language) + 1;
|
|
language_ = new (std::nothrow) char[length]; // NOLINT
|
|
if (language_) {
|
|
#ifdef _MSC_VER
|
|
strcpy_s(language_, length, language);
|
|
#else
|
|
strcpy(language_, language);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
void Track::set_name(const char* name) {
|
|
if (name) {
|
|
delete[] name_;
|
|
|
|
const size_t length = strlen(name) + 1;
|
|
name_ = new (std::nothrow) char[length]; // NOLINT
|
|
if (name_) {
|
|
#ifdef _MSC_VER
|
|
strcpy_s(name_, length, name);
|
|
#else
|
|
strcpy(name_, name);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// VideoTrack Class
|
|
|
|
VideoTrack::VideoTrack(unsigned int* seed)
|
|
: Track(seed),
|
|
display_height_(0),
|
|
display_width_(0),
|
|
frame_rate_(0.0),
|
|
height_(0),
|
|
stereo_mode_(0),
|
|
alpha_mode_(0),
|
|
width_(0) {}
|
|
|
|
VideoTrack::~VideoTrack() {}
|
|
|
|
bool VideoTrack::SetStereoMode(uint64 stereo_mode) {
|
|
if (stereo_mode != kMono && stereo_mode != kSideBySideLeftIsFirst &&
|
|
stereo_mode != kTopBottomRightIsFirst &&
|
|
stereo_mode != kTopBottomLeftIsFirst &&
|
|
stereo_mode != kSideBySideRightIsFirst)
|
|
return false;
|
|
|
|
stereo_mode_ = stereo_mode;
|
|
return true;
|
|
}
|
|
|
|
bool VideoTrack::SetAlphaMode(uint64 alpha_mode) {
|
|
if (alpha_mode != kNoAlpha && alpha_mode != kAlpha)
|
|
return false;
|
|
|
|
alpha_mode_ = alpha_mode;
|
|
return true;
|
|
}
|
|
|
|
uint64 VideoTrack::PayloadSize() const {
|
|
const uint64 parent_size = Track::PayloadSize();
|
|
|
|
uint64 size = VideoPayloadSize();
|
|
size += EbmlMasterElementSize(kMkvVideo, size);
|
|
|
|
return parent_size + size;
|
|
}
|
|
|
|
bool VideoTrack::Write(IMkvWriter* writer) const {
|
|
if (!Track::Write(writer))
|
|
return false;
|
|
|
|
const uint64 size = VideoPayloadSize();
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvVideo, size))
|
|
return false;
|
|
|
|
const int64 payload_position = writer->Position();
|
|
if (payload_position < 0)
|
|
return false;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvPixelWidth, width_))
|
|
return false;
|
|
if (!WriteEbmlElement(writer, kMkvPixelHeight, height_))
|
|
return false;
|
|
if (display_width_ > 0)
|
|
if (!WriteEbmlElement(writer, kMkvDisplayWidth, display_width_))
|
|
return false;
|
|
if (display_height_ > 0)
|
|
if (!WriteEbmlElement(writer, kMkvDisplayHeight, display_height_))
|
|
return false;
|
|
if (stereo_mode_ > kMono)
|
|
if (!WriteEbmlElement(writer, kMkvStereoMode, stereo_mode_))
|
|
return false;
|
|
if (alpha_mode_ > kNoAlpha)
|
|
if (!WriteEbmlElement(writer, kMkvAlphaMode, alpha_mode_))
|
|
return false;
|
|
if (frame_rate_ > 0.0)
|
|
if (!WriteEbmlElement(writer, kMkvFrameRate,
|
|
static_cast<float>(frame_rate_)))
|
|
return false;
|
|
|
|
const int64 stop_position = writer->Position();
|
|
if (stop_position < 0 ||
|
|
stop_position - payload_position != static_cast<int64>(size))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
uint64 VideoTrack::VideoPayloadSize() const {
|
|
uint64 size = EbmlElementSize(kMkvPixelWidth, width_);
|
|
size += EbmlElementSize(kMkvPixelHeight, height_);
|
|
if (display_width_ > 0)
|
|
size += EbmlElementSize(kMkvDisplayWidth, display_width_);
|
|
if (display_height_ > 0)
|
|
size += EbmlElementSize(kMkvDisplayHeight, display_height_);
|
|
if (stereo_mode_ > kMono)
|
|
size += EbmlElementSize(kMkvStereoMode, stereo_mode_);
|
|
if (alpha_mode_ > kNoAlpha)
|
|
size += EbmlElementSize(kMkvAlphaMode, alpha_mode_);
|
|
if (frame_rate_ > 0.0)
|
|
size += EbmlElementSize(kMkvFrameRate, static_cast<float>(frame_rate_));
|
|
|
|
return size;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// AudioTrack Class
|
|
|
|
AudioTrack::AudioTrack(unsigned int* seed)
|
|
: Track(seed), bit_depth_(0), channels_(1), sample_rate_(0.0) {}
|
|
|
|
AudioTrack::~AudioTrack() {}
|
|
|
|
uint64 AudioTrack::PayloadSize() const {
|
|
const uint64 parent_size = Track::PayloadSize();
|
|
|
|
uint64 size =
|
|
EbmlElementSize(kMkvSamplingFrequency, static_cast<float>(sample_rate_));
|
|
size += EbmlElementSize(kMkvChannels, channels_);
|
|
if (bit_depth_ > 0)
|
|
size += EbmlElementSize(kMkvBitDepth, bit_depth_);
|
|
size += EbmlMasterElementSize(kMkvAudio, size);
|
|
|
|
return parent_size + size;
|
|
}
|
|
|
|
bool AudioTrack::Write(IMkvWriter* writer) const {
|
|
if (!Track::Write(writer))
|
|
return false;
|
|
|
|
// Calculate AudioSettings size.
|
|
uint64 size =
|
|
EbmlElementSize(kMkvSamplingFrequency, static_cast<float>(sample_rate_));
|
|
size += EbmlElementSize(kMkvChannels, channels_);
|
|
if (bit_depth_ > 0)
|
|
size += EbmlElementSize(kMkvBitDepth, bit_depth_);
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvAudio, size))
|
|
return false;
|
|
|
|
const int64 payload_position = writer->Position();
|
|
if (payload_position < 0)
|
|
return false;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvSamplingFrequency,
|
|
static_cast<float>(sample_rate_)))
|
|
return false;
|
|
if (!WriteEbmlElement(writer, kMkvChannels, channels_))
|
|
return false;
|
|
if (bit_depth_ > 0)
|
|
if (!WriteEbmlElement(writer, kMkvBitDepth, bit_depth_))
|
|
return false;
|
|
|
|
const int64 stop_position = writer->Position();
|
|
if (stop_position < 0 ||
|
|
stop_position - payload_position != static_cast<int64>(size))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// Tracks Class
|
|
|
|
const char Tracks::kOpusCodecId[] = "A_OPUS";
|
|
const char Tracks::kVorbisCodecId[] = "A_VORBIS";
|
|
const char Tracks::kVp8CodecId[] = "V_VP8";
|
|
const char Tracks::kVp9CodecId[] = "V_VP9";
|
|
|
|
Tracks::Tracks() : track_entries_(NULL), track_entries_size_(0) {}
|
|
|
|
Tracks::~Tracks() {
|
|
if (track_entries_) {
|
|
for (uint32 i = 0; i < track_entries_size_; ++i) {
|
|
Track* const track = track_entries_[i];
|
|
delete track;
|
|
}
|
|
delete[] track_entries_;
|
|
}
|
|
}
|
|
|
|
bool Tracks::AddTrack(Track* track, int32 number) {
|
|
if (number < 0)
|
|
return false;
|
|
|
|
// This muxer only supports track numbers in the range [1, 126], in
|
|
// order to be able (to use Matroska integer representation) to
|
|
// serialize the block header (of which the track number is a part)
|
|
// for a frame using exactly 4 bytes.
|
|
|
|
if (number > 0x7E)
|
|
return false;
|
|
|
|
uint32 track_num = number;
|
|
|
|
if (track_num > 0) {
|
|
// Check to make sure a track does not already have |track_num|.
|
|
for (uint32 i = 0; i < track_entries_size_; ++i) {
|
|
if (track_entries_[i]->number() == track_num)
|
|
return false;
|
|
}
|
|
}
|
|
|
|
const uint32 count = track_entries_size_ + 1;
|
|
|
|
Track** const track_entries = new (std::nothrow) Track* [count]; // NOLINT
|
|
if (!track_entries)
|
|
return false;
|
|
|
|
for (uint32 i = 0; i < track_entries_size_; ++i) {
|
|
track_entries[i] = track_entries_[i];
|
|
}
|
|
|
|
delete[] track_entries_;
|
|
|
|
// Find the lowest availible track number > 0.
|
|
if (track_num == 0) {
|
|
track_num = count;
|
|
|
|
// Check to make sure a track does not already have |track_num|.
|
|
bool exit = false;
|
|
do {
|
|
exit = true;
|
|
for (uint32 i = 0; i < track_entries_size_; ++i) {
|
|
if (track_entries[i]->number() == track_num) {
|
|
track_num++;
|
|
exit = false;
|
|
break;
|
|
}
|
|
}
|
|
} while (!exit);
|
|
}
|
|
track->set_number(track_num);
|
|
|
|
track_entries_ = track_entries;
|
|
track_entries_[track_entries_size_] = track;
|
|
track_entries_size_ = count;
|
|
return true;
|
|
}
|
|
|
|
const Track* Tracks::GetTrackByIndex(uint32 index) const {
|
|
if (track_entries_ == NULL)
|
|
return NULL;
|
|
|
|
if (index >= track_entries_size_)
|
|
return NULL;
|
|
|
|
return track_entries_[index];
|
|
}
|
|
|
|
Track* Tracks::GetTrackByNumber(uint64 track_number) const {
|
|
const int32 count = track_entries_size();
|
|
for (int32 i = 0; i < count; ++i) {
|
|
if (track_entries_[i]->number() == track_number)
|
|
return track_entries_[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
bool Tracks::TrackIsAudio(uint64 track_number) const {
|
|
const Track* const track = GetTrackByNumber(track_number);
|
|
|
|
if (track->type() == kAudio)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Tracks::TrackIsVideo(uint64 track_number) const {
|
|
const Track* const track = GetTrackByNumber(track_number);
|
|
|
|
if (track->type() == kVideo)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Tracks::Write(IMkvWriter* writer) const {
|
|
uint64 size = 0;
|
|
const int32 count = track_entries_size();
|
|
for (int32 i = 0; i < count; ++i) {
|
|
const Track* const track = GetTrackByIndex(i);
|
|
|
|
if (!track)
|
|
return false;
|
|
|
|
size += track->Size();
|
|
}
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvTracks, size))
|
|
return false;
|
|
|
|
const int64 payload_position = writer->Position();
|
|
if (payload_position < 0)
|
|
return false;
|
|
|
|
for (int32 i = 0; i < count; ++i) {
|
|
const Track* const track = GetTrackByIndex(i);
|
|
if (!track->Write(writer))
|
|
return false;
|
|
}
|
|
|
|
const int64 stop_position = writer->Position();
|
|
if (stop_position < 0 ||
|
|
stop_position - payload_position != static_cast<int64>(size))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// Chapter Class
|
|
|
|
bool Chapter::set_id(const char* id) { return StrCpy(id, &id_); }
|
|
|
|
void Chapter::set_time(const Segment& segment, uint64 start_ns, uint64 end_ns) {
|
|
const SegmentInfo* const info = segment.GetSegmentInfo();
|
|
const uint64 timecode_scale = info->timecode_scale();
|
|
start_timecode_ = start_ns / timecode_scale;
|
|
end_timecode_ = end_ns / timecode_scale;
|
|
}
|
|
|
|
bool Chapter::add_string(const char* title, const char* language,
|
|
const char* country) {
|
|
if (!ExpandDisplaysArray())
|
|
return false;
|
|
|
|
Display& d = displays_[displays_count_++];
|
|
d.Init();
|
|
|
|
if (!d.set_title(title))
|
|
return false;
|
|
|
|
if (!d.set_language(language))
|
|
return false;
|
|
|
|
if (!d.set_country(country))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
Chapter::Chapter() {
|
|
// This ctor only constructs the object. Proper initialization is
|
|
// done in Init() (called in Chapters::AddChapter()). The only
|
|
// reason we bother implementing this ctor is because we had to
|
|
// declare it as private (along with the dtor), in order to prevent
|
|
// clients from creating Chapter instances (a privelege we grant
|
|
// only to the Chapters class). Doing no initialization here also
|
|
// means that creating arrays of chapter objects is more efficient,
|
|
// because we only initialize each new chapter object as it becomes
|
|
// active on the array.
|
|
}
|
|
|
|
Chapter::~Chapter() {}
|
|
|
|
void Chapter::Init(unsigned int* seed) {
|
|
id_ = NULL;
|
|
displays_ = NULL;
|
|
displays_size_ = 0;
|
|
displays_count_ = 0;
|
|
uid_ = MakeUID(seed);
|
|
}
|
|
|
|
void Chapter::ShallowCopy(Chapter* dst) const {
|
|
dst->id_ = id_;
|
|
dst->start_timecode_ = start_timecode_;
|
|
dst->end_timecode_ = end_timecode_;
|
|
dst->uid_ = uid_;
|
|
dst->displays_ = displays_;
|
|
dst->displays_size_ = displays_size_;
|
|
dst->displays_count_ = displays_count_;
|
|
}
|
|
|
|
void Chapter::Clear() {
|
|
StrCpy(NULL, &id_);
|
|
|
|
while (displays_count_ > 0) {
|
|
Display& d = displays_[--displays_count_];
|
|
d.Clear();
|
|
}
|
|
|
|
delete[] displays_;
|
|
displays_ = NULL;
|
|
|
|
displays_size_ = 0;
|
|
}
|
|
|
|
bool Chapter::ExpandDisplaysArray() {
|
|
if (displays_size_ > displays_count_)
|
|
return true; // nothing to do yet
|
|
|
|
const int size = (displays_size_ == 0) ? 1 : 2 * displays_size_;
|
|
|
|
Display* const displays = new (std::nothrow) Display[size]; // NOLINT
|
|
if (displays == NULL)
|
|
return false;
|
|
|
|
for (int idx = 0; idx < displays_count_; ++idx) {
|
|
displays[idx] = displays_[idx]; // shallow copy
|
|
}
|
|
|
|
delete[] displays_;
|
|
|
|
displays_ = displays;
|
|
displays_size_ = size;
|
|
|
|
return true;
|
|
}
|
|
|
|
uint64 Chapter::WriteAtom(IMkvWriter* writer) const {
|
|
uint64 payload_size = EbmlElementSize(kMkvChapterStringUID, id_) +
|
|
EbmlElementSize(kMkvChapterUID, uid_) +
|
|
EbmlElementSize(kMkvChapterTimeStart, start_timecode_) +
|
|
EbmlElementSize(kMkvChapterTimeEnd, end_timecode_);
|
|
|
|
for (int idx = 0; idx < displays_count_; ++idx) {
|
|
const Display& d = displays_[idx];
|
|
payload_size += d.WriteDisplay(NULL);
|
|
}
|
|
|
|
const uint64 atom_size =
|
|
EbmlMasterElementSize(kMkvChapterAtom, payload_size) + payload_size;
|
|
|
|
if (writer == NULL)
|
|
return atom_size;
|
|
|
|
const int64 start = writer->Position();
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvChapterAtom, payload_size))
|
|
return 0;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvChapterStringUID, id_))
|
|
return 0;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvChapterUID, uid_))
|
|
return 0;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvChapterTimeStart, start_timecode_))
|
|
return 0;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvChapterTimeEnd, end_timecode_))
|
|
return 0;
|
|
|
|
for (int idx = 0; idx < displays_count_; ++idx) {
|
|
const Display& d = displays_[idx];
|
|
|
|
if (!d.WriteDisplay(writer))
|
|
return 0;
|
|
}
|
|
|
|
const int64 stop = writer->Position();
|
|
|
|
if (stop >= start && uint64(stop - start) != atom_size)
|
|
return 0;
|
|
|
|
return atom_size;
|
|
}
|
|
|
|
void Chapter::Display::Init() {
|
|
title_ = NULL;
|
|
language_ = NULL;
|
|
country_ = NULL;
|
|
}
|
|
|
|
void Chapter::Display::Clear() {
|
|
StrCpy(NULL, &title_);
|
|
StrCpy(NULL, &language_);
|
|
StrCpy(NULL, &country_);
|
|
}
|
|
|
|
bool Chapter::Display::set_title(const char* title) {
|
|
return StrCpy(title, &title_);
|
|
}
|
|
|
|
bool Chapter::Display::set_language(const char* language) {
|
|
return StrCpy(language, &language_);
|
|
}
|
|
|
|
bool Chapter::Display::set_country(const char* country) {
|
|
return StrCpy(country, &country_);
|
|
}
|
|
|
|
uint64 Chapter::Display::WriteDisplay(IMkvWriter* writer) const {
|
|
uint64 payload_size = EbmlElementSize(kMkvChapString, title_);
|
|
|
|
if (language_)
|
|
payload_size += EbmlElementSize(kMkvChapLanguage, language_);
|
|
|
|
if (country_)
|
|
payload_size += EbmlElementSize(kMkvChapCountry, country_);
|
|
|
|
const uint64 display_size =
|
|
EbmlMasterElementSize(kMkvChapterDisplay, payload_size) + payload_size;
|
|
|
|
if (writer == NULL)
|
|
return display_size;
|
|
|
|
const int64 start = writer->Position();
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvChapterDisplay, payload_size))
|
|
return 0;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvChapString, title_))
|
|
return 0;
|
|
|
|
if (language_) {
|
|
if (!WriteEbmlElement(writer, kMkvChapLanguage, language_))
|
|
return 0;
|
|
}
|
|
|
|
if (country_) {
|
|
if (!WriteEbmlElement(writer, kMkvChapCountry, country_))
|
|
return 0;
|
|
}
|
|
|
|
const int64 stop = writer->Position();
|
|
|
|
if (stop >= start && uint64(stop - start) != display_size)
|
|
return 0;
|
|
|
|
return display_size;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// Chapters Class
|
|
|
|
Chapters::Chapters() : chapters_size_(0), chapters_count_(0), chapters_(NULL) {}
|
|
|
|
Chapters::~Chapters() {
|
|
while (chapters_count_ > 0) {
|
|
Chapter& chapter = chapters_[--chapters_count_];
|
|
chapter.Clear();
|
|
}
|
|
|
|
delete[] chapters_;
|
|
chapters_ = NULL;
|
|
}
|
|
|
|
int Chapters::Count() const { return chapters_count_; }
|
|
|
|
Chapter* Chapters::AddChapter(unsigned int* seed) {
|
|
if (!ExpandChaptersArray())
|
|
return NULL;
|
|
|
|
Chapter& chapter = chapters_[chapters_count_++];
|
|
chapter.Init(seed);
|
|
|
|
return &chapter;
|
|
}
|
|
|
|
bool Chapters::Write(IMkvWriter* writer) const {
|
|
if (writer == NULL)
|
|
return false;
|
|
|
|
const uint64 payload_size = WriteEdition(NULL); // return size only
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvChapters, payload_size))
|
|
return false;
|
|
|
|
const int64 start = writer->Position();
|
|
|
|
if (WriteEdition(writer) == 0) // error
|
|
return false;
|
|
|
|
const int64 stop = writer->Position();
|
|
|
|
if (stop >= start && uint64(stop - start) != payload_size)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Chapters::ExpandChaptersArray() {
|
|
if (chapters_size_ > chapters_count_)
|
|
return true; // nothing to do yet
|
|
|
|
const int size = (chapters_size_ == 0) ? 1 : 2 * chapters_size_;
|
|
|
|
Chapter* const chapters = new (std::nothrow) Chapter[size]; // NOLINT
|
|
if (chapters == NULL)
|
|
return false;
|
|
|
|
for (int idx = 0; idx < chapters_count_; ++idx) {
|
|
const Chapter& src = chapters_[idx];
|
|
Chapter* const dst = chapters + idx;
|
|
src.ShallowCopy(dst);
|
|
}
|
|
|
|
delete[] chapters_;
|
|
|
|
chapters_ = chapters;
|
|
chapters_size_ = size;
|
|
|
|
return true;
|
|
}
|
|
|
|
uint64 Chapters::WriteEdition(IMkvWriter* writer) const {
|
|
uint64 payload_size = 0;
|
|
|
|
for (int idx = 0; idx < chapters_count_; ++idx) {
|
|
const Chapter& chapter = chapters_[idx];
|
|
payload_size += chapter.WriteAtom(NULL);
|
|
}
|
|
|
|
const uint64 edition_size =
|
|
EbmlMasterElementSize(kMkvEditionEntry, payload_size) + payload_size;
|
|
|
|
if (writer == NULL) // return size only
|
|
return edition_size;
|
|
|
|
const int64 start = writer->Position();
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvEditionEntry, payload_size))
|
|
return 0; // error
|
|
|
|
for (int idx = 0; idx < chapters_count_; ++idx) {
|
|
const Chapter& chapter = chapters_[idx];
|
|
|
|
const uint64 chapter_size = chapter.WriteAtom(writer);
|
|
if (chapter_size == 0) // error
|
|
return 0;
|
|
}
|
|
|
|
const int64 stop = writer->Position();
|
|
|
|
if (stop >= start && uint64(stop - start) != edition_size)
|
|
return 0;
|
|
|
|
return edition_size;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// Cluster class
|
|
|
|
Cluster::Cluster(uint64 timecode, int64 cues_pos)
|
|
: blocks_added_(0),
|
|
finalized_(false),
|
|
header_written_(false),
|
|
payload_size_(0),
|
|
position_for_cues_(cues_pos),
|
|
size_position_(-1),
|
|
timecode_(timecode),
|
|
writer_(NULL) {}
|
|
|
|
Cluster::~Cluster() {}
|
|
|
|
bool Cluster::Init(IMkvWriter* ptr_writer) {
|
|
if (!ptr_writer) {
|
|
return false;
|
|
}
|
|
writer_ = ptr_writer;
|
|
return true;
|
|
}
|
|
|
|
bool Cluster::AddFrame(const uint8* frame, uint64 length, uint64 track_number,
|
|
uint64 abs_timecode, bool is_key) {
|
|
return DoWriteBlock(frame, length, track_number, abs_timecode, is_key ? 1 : 0,
|
|
&WriteSimpleBlock);
|
|
}
|
|
|
|
bool Cluster::AddFrameWithAdditional(const uint8* frame, uint64 length,
|
|
const uint8* additional,
|
|
uint64 additional_length, uint64 add_id,
|
|
uint64 track_number, uint64 abs_timecode,
|
|
bool is_key) {
|
|
return DoWriteBlockWithAdditional(
|
|
frame, length, additional, additional_length, add_id, track_number,
|
|
abs_timecode, is_key ? 1 : 0, &WriteBlockWithAdditional);
|
|
}
|
|
|
|
bool Cluster::AddFrameWithDiscardPadding(const uint8* frame, uint64 length,
|
|
int64 discard_padding,
|
|
uint64 track_number,
|
|
uint64 abs_timecode, bool is_key) {
|
|
return DoWriteBlockWithDiscardPadding(
|
|
frame, length, discard_padding, track_number, abs_timecode,
|
|
is_key ? 1 : 0, &WriteBlockWithDiscardPadding);
|
|
}
|
|
|
|
bool Cluster::AddMetadata(const uint8* frame, uint64 length,
|
|
uint64 track_number, uint64 abs_timecode,
|
|
uint64 duration_timecode) {
|
|
return DoWriteBlock(frame, length, track_number, abs_timecode,
|
|
duration_timecode, &WriteMetadataBlock);
|
|
}
|
|
|
|
void Cluster::AddPayloadSize(uint64 size) { payload_size_ += size; }
|
|
|
|
bool Cluster::Finalize() {
|
|
if (!writer_ || finalized_ || size_position_ == -1)
|
|
return false;
|
|
|
|
if (writer_->Seekable()) {
|
|
const int64 pos = writer_->Position();
|
|
|
|
if (writer_->Position(size_position_))
|
|
return false;
|
|
|
|
if (WriteUIntSize(writer_, payload_size(), 8))
|
|
return false;
|
|
|
|
if (writer_->Position(pos))
|
|
return false;
|
|
}
|
|
|
|
finalized_ = true;
|
|
|
|
return true;
|
|
}
|
|
|
|
uint64 Cluster::Size() const {
|
|
const uint64 element_size =
|
|
EbmlMasterElementSize(kMkvCluster, 0xFFFFFFFFFFFFFFFFULL) + payload_size_;
|
|
return element_size;
|
|
}
|
|
|
|
template <typename Type>
|
|
bool Cluster::PreWriteBlock(Type* write_function) {
|
|
if (write_function == NULL)
|
|
return false;
|
|
|
|
if (finalized_)
|
|
return false;
|
|
|
|
if (!header_written_) {
|
|
if (!WriteClusterHeader())
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void Cluster::PostWriteBlock(uint64 element_size) {
|
|
AddPayloadSize(element_size);
|
|
++blocks_added_;
|
|
}
|
|
|
|
bool Cluster::IsValidTrackNumber(uint64 track_number) const {
|
|
return (track_number > 0 && track_number <= 0x7E);
|
|
}
|
|
|
|
int64 Cluster::GetRelativeTimecode(int64 abs_timecode) const {
|
|
const int64 cluster_timecode = this->Cluster::timecode();
|
|
const int64 rel_timecode =
|
|
static_cast<int64>(abs_timecode) - cluster_timecode;
|
|
|
|
if (rel_timecode < 0 || rel_timecode > kMaxBlockTimecode)
|
|
return -1;
|
|
|
|
return rel_timecode;
|
|
}
|
|
|
|
bool Cluster::DoWriteBlock(const uint8* frame, uint64 length,
|
|
uint64 track_number, uint64 abs_timecode,
|
|
uint64 generic_arg, WriteBlock write_block) {
|
|
if (frame == NULL || length == 0)
|
|
return false;
|
|
|
|
if (!IsValidTrackNumber(track_number))
|
|
return false;
|
|
|
|
const int64 rel_timecode = GetRelativeTimecode(abs_timecode);
|
|
if (rel_timecode < 0)
|
|
return false;
|
|
|
|
if (!PreWriteBlock(write_block))
|
|
return false;
|
|
|
|
const uint64 element_size = (*write_block)(
|
|
writer_, frame, length, track_number, rel_timecode, generic_arg);
|
|
if (element_size == 0)
|
|
return false;
|
|
|
|
PostWriteBlock(element_size);
|
|
return true;
|
|
}
|
|
|
|
bool Cluster::DoWriteBlockWithAdditional(
|
|
const uint8* frame, uint64 length, const uint8* additional,
|
|
uint64 additional_length, uint64 add_id, uint64 track_number,
|
|
uint64 abs_timecode, uint64 generic_arg, WriteBlockAdditional write_block) {
|
|
if (frame == NULL || length == 0 || additional == NULL ||
|
|
additional_length == 0)
|
|
return false;
|
|
|
|
if (!IsValidTrackNumber(track_number))
|
|
return false;
|
|
|
|
const int64 rel_timecode = GetRelativeTimecode(abs_timecode);
|
|
if (rel_timecode < 0)
|
|
return false;
|
|
|
|
if (!PreWriteBlock(write_block))
|
|
return false;
|
|
|
|
const uint64 element_size =
|
|
(*write_block)(writer_, frame, length, additional, additional_length,
|
|
add_id, track_number, rel_timecode, generic_arg);
|
|
if (element_size == 0)
|
|
return false;
|
|
|
|
PostWriteBlock(element_size);
|
|
return true;
|
|
}
|
|
|
|
bool Cluster::DoWriteBlockWithDiscardPadding(
|
|
const uint8* frame, uint64 length, int64 discard_padding,
|
|
uint64 track_number, uint64 abs_timecode, uint64 generic_arg,
|
|
WriteBlockDiscardPadding write_block) {
|
|
if (frame == NULL || length == 0 || discard_padding <= 0)
|
|
return false;
|
|
|
|
if (!IsValidTrackNumber(track_number))
|
|
return false;
|
|
|
|
const int64 rel_timecode = GetRelativeTimecode(abs_timecode);
|
|
if (rel_timecode < 0)
|
|
return false;
|
|
|
|
if (!PreWriteBlock(write_block))
|
|
return false;
|
|
|
|
const uint64 element_size =
|
|
(*write_block)(writer_, frame, length, discard_padding, track_number,
|
|
rel_timecode, generic_arg);
|
|
if (element_size == 0)
|
|
return false;
|
|
|
|
PostWriteBlock(element_size);
|
|
return true;
|
|
}
|
|
|
|
bool Cluster::WriteClusterHeader() {
|
|
if (finalized_)
|
|
return false;
|
|
|
|
if (WriteID(writer_, kMkvCluster))
|
|
return false;
|
|
|
|
// Save for later.
|
|
size_position_ = writer_->Position();
|
|
|
|
// Write "unknown" (EBML coded -1) as cluster size value. We need to write 8
|
|
// bytes because we do not know how big our cluster will be.
|
|
if (SerializeInt(writer_, kEbmlUnknownValue, 8))
|
|
return false;
|
|
|
|
if (!WriteEbmlElement(writer_, kMkvTimecode, timecode()))
|
|
return false;
|
|
AddPayloadSize(EbmlElementSize(kMkvTimecode, timecode()));
|
|
header_written_ = true;
|
|
|
|
return true;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// SeekHead Class
|
|
|
|
SeekHead::SeekHead() : start_pos_(0ULL) {
|
|
for (int32 i = 0; i < kSeekEntryCount; ++i) {
|
|
seek_entry_id_[i] = 0;
|
|
seek_entry_pos_[i] = 0;
|
|
}
|
|
}
|
|
|
|
SeekHead::~SeekHead() {}
|
|
|
|
bool SeekHead::Finalize(IMkvWriter* writer) const {
|
|
if (writer->Seekable()) {
|
|
if (start_pos_ == -1)
|
|
return false;
|
|
|
|
uint64 payload_size = 0;
|
|
uint64 entry_size[kSeekEntryCount];
|
|
|
|
for (int32 i = 0; i < kSeekEntryCount; ++i) {
|
|
if (seek_entry_id_[i] != 0) {
|
|
entry_size[i] =
|
|
EbmlElementSize(kMkvSeekID, static_cast<uint64>(seek_entry_id_[i]));
|
|
entry_size[i] += EbmlElementSize(kMkvSeekPosition, seek_entry_pos_[i]);
|
|
|
|
payload_size +=
|
|
EbmlMasterElementSize(kMkvSeek, entry_size[i]) + entry_size[i];
|
|
}
|
|
}
|
|
|
|
// No SeekHead elements
|
|
if (payload_size == 0)
|
|
return true;
|
|
|
|
const int64 pos = writer->Position();
|
|
if (writer->Position(start_pos_))
|
|
return false;
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvSeekHead, payload_size))
|
|
return false;
|
|
|
|
for (int32 i = 0; i < kSeekEntryCount; ++i) {
|
|
if (seek_entry_id_[i] != 0) {
|
|
if (!WriteEbmlMasterElement(writer, kMkvSeek, entry_size[i]))
|
|
return false;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvSeekID,
|
|
static_cast<uint64>(seek_entry_id_[i])))
|
|
return false;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvSeekPosition, seek_entry_pos_[i]))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
const uint64 total_entry_size = kSeekEntryCount * MaxEntrySize();
|
|
const uint64 total_size =
|
|
EbmlMasterElementSize(kMkvSeekHead, total_entry_size) +
|
|
total_entry_size;
|
|
const int64 size_left = total_size - (writer->Position() - start_pos_);
|
|
|
|
const uint64 bytes_written = WriteVoidElement(writer, size_left);
|
|
if (!bytes_written)
|
|
return false;
|
|
|
|
if (writer->Position(pos))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool SeekHead::Write(IMkvWriter* writer) {
|
|
const uint64 entry_size = kSeekEntryCount * MaxEntrySize();
|
|
const uint64 size = EbmlMasterElementSize(kMkvSeekHead, entry_size);
|
|
|
|
start_pos_ = writer->Position();
|
|
|
|
const uint64 bytes_written = WriteVoidElement(writer, size + entry_size);
|
|
if (!bytes_written)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool SeekHead::AddSeekEntry(uint32 id, uint64 pos) {
|
|
for (int32 i = 0; i < kSeekEntryCount; ++i) {
|
|
if (seek_entry_id_[i] == 0) {
|
|
seek_entry_id_[i] = id;
|
|
seek_entry_pos_[i] = pos;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
uint32 SeekHead::GetId(int index) const {
|
|
if (index < 0 || index >= kSeekEntryCount)
|
|
return UINT_MAX;
|
|
return seek_entry_id_[index];
|
|
}
|
|
|
|
uint64 SeekHead::GetPosition(int index) const {
|
|
if (index < 0 || index >= kSeekEntryCount)
|
|
return ULLONG_MAX;
|
|
return seek_entry_pos_[index];
|
|
}
|
|
|
|
bool SeekHead::SetSeekEntry(int index, uint32 id, uint64 position) {
|
|
if (index < 0 || index >= kSeekEntryCount)
|
|
return false;
|
|
seek_entry_id_[index] = id;
|
|
seek_entry_pos_[index] = position;
|
|
return true;
|
|
}
|
|
|
|
uint64 SeekHead::MaxEntrySize() const {
|
|
const uint64 max_entry_payload_size =
|
|
EbmlElementSize(kMkvSeekID, 0xffffffffULL) +
|
|
EbmlElementSize(kMkvSeekPosition, 0xffffffffffffffffULL);
|
|
const uint64 max_entry_size =
|
|
EbmlMasterElementSize(kMkvSeek, max_entry_payload_size) +
|
|
max_entry_payload_size;
|
|
|
|
return max_entry_size;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// SegmentInfo Class
|
|
|
|
SegmentInfo::SegmentInfo()
|
|
: duration_(-1.0),
|
|
muxing_app_(NULL),
|
|
timecode_scale_(1000000ULL),
|
|
writing_app_(NULL),
|
|
date_utc_(LLONG_MIN),
|
|
duration_pos_(-1) {}
|
|
|
|
SegmentInfo::~SegmentInfo() {
|
|
delete[] muxing_app_;
|
|
delete[] writing_app_;
|
|
}
|
|
|
|
bool SegmentInfo::Init() {
|
|
int32 major;
|
|
int32 minor;
|
|
int32 build;
|
|
int32 revision;
|
|
GetVersion(&major, &minor, &build, &revision);
|
|
char temp[256];
|
|
#ifdef _MSC_VER
|
|
sprintf_s(temp, sizeof(temp) / sizeof(temp[0]), "libwebm-%d.%d.%d.%d", major,
|
|
minor, build, revision);
|
|
#else
|
|
snprintf(temp, sizeof(temp) / sizeof(temp[0]), "libwebm-%d.%d.%d.%d", major,
|
|
minor, build, revision);
|
|
#endif
|
|
|
|
const size_t app_len = strlen(temp) + 1;
|
|
|
|
delete[] muxing_app_;
|
|
|
|
muxing_app_ = new (std::nothrow) char[app_len]; // NOLINT
|
|
if (!muxing_app_)
|
|
return false;
|
|
|
|
#ifdef _MSC_VER
|
|
strcpy_s(muxing_app_, app_len, temp);
|
|
#else
|
|
strcpy(muxing_app_, temp);
|
|
#endif
|
|
|
|
set_writing_app(temp);
|
|
if (!writing_app_)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool SegmentInfo::Finalize(IMkvWriter* writer) const {
|
|
if (!writer)
|
|
return false;
|
|
|
|
if (duration_ > 0.0) {
|
|
if (writer->Seekable()) {
|
|
if (duration_pos_ == -1)
|
|
return false;
|
|
|
|
const int64 pos = writer->Position();
|
|
|
|
if (writer->Position(duration_pos_))
|
|
return false;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvDuration,
|
|
static_cast<float>(duration_)))
|
|
return false;
|
|
|
|
if (writer->Position(pos))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool SegmentInfo::Write(IMkvWriter* writer) {
|
|
if (!writer || !muxing_app_ || !writing_app_)
|
|
return false;
|
|
|
|
uint64 size = EbmlElementSize(kMkvTimecodeScale, timecode_scale_);
|
|
if (duration_ > 0.0)
|
|
size += EbmlElementSize(kMkvDuration, static_cast<float>(duration_));
|
|
if (date_utc_ != LLONG_MIN)
|
|
size += EbmlDateElementSize(kMkvDateUTC, date_utc_);
|
|
size += EbmlElementSize(kMkvMuxingApp, muxing_app_);
|
|
size += EbmlElementSize(kMkvWritingApp, writing_app_);
|
|
|
|
if (!WriteEbmlMasterElement(writer, kMkvInfo, size))
|
|
return false;
|
|
|
|
const int64 payload_position = writer->Position();
|
|
if (payload_position < 0)
|
|
return false;
|
|
|
|
if (!WriteEbmlElement(writer, kMkvTimecodeScale, timecode_scale_))
|
|
return false;
|
|
|
|
if (duration_ > 0.0) {
|
|
// Save for later
|
|
duration_pos_ = writer->Position();
|
|
|
|
if (!WriteEbmlElement(writer, kMkvDuration, static_cast<float>(duration_)))
|
|
return false;
|
|
}
|
|
|
|
if (date_utc_ != LLONG_MIN)
|
|
WriteEbmlDateElement(writer, kMkvDateUTC, date_utc_);
|
|
|
|
if (!WriteEbmlElement(writer, kMkvMuxingApp, muxing_app_))
|
|
return false;
|
|
if (!WriteEbmlElement(writer, kMkvWritingApp, writing_app_))
|
|
return false;
|
|
|
|
const int64 stop_position = writer->Position();
|
|
if (stop_position < 0 ||
|
|
stop_position - payload_position != static_cast<int64>(size))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
void SegmentInfo::set_muxing_app(const char* app) {
|
|
if (app) {
|
|
const size_t length = strlen(app) + 1;
|
|
char* temp_str = new (std::nothrow) char[length]; // NOLINT
|
|
if (!temp_str)
|
|
return;
|
|
|
|
#ifdef _MSC_VER
|
|
strcpy_s(temp_str, length, app);
|
|
#else
|
|
strcpy(temp_str, app);
|
|
#endif
|
|
|
|
delete[] muxing_app_;
|
|
muxing_app_ = temp_str;
|
|
}
|
|
}
|
|
|
|
void SegmentInfo::set_writing_app(const char* app) {
|
|
if (app) {
|
|
const size_t length = strlen(app) + 1;
|
|
char* temp_str = new (std::nothrow) char[length]; // NOLINT
|
|
if (!temp_str)
|
|
return;
|
|
|
|
#ifdef _MSC_VER
|
|
strcpy_s(temp_str, length, app);
|
|
#else
|
|
strcpy(temp_str, app);
|
|
#endif
|
|
|
|
delete[] writing_app_;
|
|
writing_app_ = temp_str;
|
|
}
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
//
|
|
// Segment Class
|
|
|
|
Segment::Segment()
|
|
: chunk_count_(0),
|
|
chunk_name_(NULL),
|
|
chunk_writer_cluster_(NULL),
|
|
chunk_writer_cues_(NULL),
|
|
chunk_writer_header_(NULL),
|
|
chunking_(false),
|
|
chunking_base_name_(NULL),
|
|
cluster_list_(NULL),
|
|
cluster_list_capacity_(0),
|
|
cluster_list_size_(0),
|
|
cues_position_(kAfterClusters),
|
|
cues_track_(0),
|
|
force_new_cluster_(false),
|
|
frames_(NULL),
|
|
frames_capacity_(0),
|
|
frames_size_(0),
|
|
has_video_(false),
|
|
header_written_(false),
|
|
last_block_duration_(0),
|
|
last_timestamp_(0),
|
|
max_cluster_duration_(kDefaultMaxClusterDuration),
|
|
max_cluster_size_(0),
|
|
mode_(kFile),
|
|
new_cuepoint_(false),
|
|
output_cues_(true),
|
|
payload_pos_(0),
|
|
size_position_(0),
|
|
writer_cluster_(NULL),
|
|
writer_cues_(NULL),
|
|
writer_header_(NULL) {
|
|
const time_t curr_time = time(NULL);
|
|
seed_ = static_cast<unsigned int>(curr_time);
|
|
#ifdef _WIN32
|
|
srand(seed_);
|
|
#endif
|
|
}
|
|
|
|
Segment::~Segment() {
|
|
if (cluster_list_) {
|
|
for (int32 i = 0; i < cluster_list_size_; ++i) {
|
|
Cluster* const cluster = cluster_list_[i];
|
|
delete cluster;
|
|
}
|
|
delete[] cluster_list_;
|
|
}
|
|
|
|
if (frames_) {
|
|
for (int32 i = 0; i < frames_size_; ++i) {
|
|
Frame* const frame = frames_[i];
|
|
delete frame;
|
|
}
|
|
delete[] frames_;
|
|
}
|
|
|
|
delete[] chunk_name_;
|
|
delete[] chunking_base_name_;
|
|
|
|
if (chunk_writer_cluster_) {
|
|
chunk_writer_cluster_->Close();
|
|
delete chunk_writer_cluster_;
|
|
}
|
|
if (chunk_writer_cues_) {
|
|
chunk_writer_cues_->Close();
|
|
delete chunk_writer_cues_;
|
|
}
|
|
if (chunk_writer_header_) {
|
|
chunk_writer_header_->Close();
|
|
delete chunk_writer_header_;
|
|
}
|
|
}
|
|
|
|
void Segment::MoveCuesBeforeClustersHelper(uint64 diff, int32 index,
|
|
uint64* cues_size) {
|
|
const uint64 old_cues_size = *cues_size;
|
|
CuePoint* const cue_point = cues_.GetCueByIndex(index);
|
|
if (cue_point == NULL)
|
|
return;
|
|
const uint64 old_cue_point_size = cue_point->Size();
|
|
const uint64 cluster_pos = cue_point->cluster_pos() + diff;
|
|
cue_point->set_cluster_pos(cluster_pos); // update the new cluster position
|
|
// New size of the cue is computed as follows
|
|
// Let a = current size of Cues Element
|
|
// Let b = Difference in Cue Point's size after this pass
|
|
// Let c = Difference in length of Cues Element's size
|
|
// (This is computed as CodedSize(a + b) - CodedSize(a)
|
|
// Let d = a + b + c. Now d is the new size of the Cues element which is
|
|
// passed on to the next recursive call.
|
|
const uint64 cue_point_size_diff = cue_point->Size() - old_cue_point_size;
|
|
const uint64 cue_size_diff =
|
|
GetCodedUIntSize(*cues_size + cue_point_size_diff) -
|
|
GetCodedUIntSize(*cues_size);
|
|
*cues_size += cue_point_size_diff + cue_size_diff;
|
|
diff = *cues_size - old_cues_size;
|
|
if (diff > 0) {
|
|
for (int32 i = 0; i < cues_.cue_entries_size(); ++i) {
|
|
MoveCuesBeforeClustersHelper(diff, i, cues_size);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Segment::MoveCuesBeforeClusters() {
|
|
const uint64 current_cue_size = cues_.Size();
|
|
uint64 cue_size = current_cue_size;
|
|
for (int32 i = 0; i < cues_.cue_entries_size(); i++)
|
|
MoveCuesBeforeClustersHelper(current_cue_size, i, &cue_size);
|
|
|
|
// Adjust the Seek Entry to reflect the change in position
|
|
// of Cluster and Cues
|
|
int32 cluster_index = 0;
|
|
int32 cues_index = 0;
|
|
for (int32 i = 0; i < SeekHead::kSeekEntryCount; ++i) {
|
|
if (seek_head_.GetId(i) == kMkvCluster)
|
|
cluster_index = i;
|
|
if (seek_head_.GetId(i) == kMkvCues)
|
|
cues_index = i;
|
|
}
|
|
seek_head_.SetSeekEntry(cues_index, kMkvCues,
|
|
seek_head_.GetPosition(cluster_index));
|
|
seek_head_.SetSeekEntry(cluster_index, kMkvCluster,
|
|
cues_.Size() + seek_head_.GetPosition(cues_index));
|
|
}
|
|
|
|
bool Segment::Init(IMkvWriter* ptr_writer) {
|
|
if (!ptr_writer) {
|
|
return false;
|
|
}
|
|
writer_cluster_ = ptr_writer;
|
|
writer_cues_ = ptr_writer;
|
|
writer_header_ = ptr_writer;
|
|
return segment_info_.Init();
|
|
}
|
|
|
|
bool Segment::CopyAndMoveCuesBeforeClusters(mkvparser::IMkvReader* reader,
|
|
IMkvWriter* writer) {
|
|
if (!writer->Seekable() || chunking_)
|
|
return false;
|
|
const int64 cluster_offset =
|
|
cluster_list_[0]->size_position() - GetUIntSize(kMkvCluster);
|
|
|
|
// Copy the headers.
|
|
if (!ChunkedCopy(reader, writer, 0, cluster_offset))
|
|
return false;
|
|
|
|
// Recompute cue positions and seek entries.
|
|
MoveCuesBeforeClusters();
|
|
|
|
// Write cues and seek entries.
|
|
// TODO(vigneshv): As of now, it's safe to call seek_head_.Finalize() for the
|
|
// second time with a different writer object. But the name Finalize() doesn't
|
|
// indicate something we want to call more than once. So consider renaming it
|
|
// to write() or some such.
|
|
if (!cues_.Write(writer) || !seek_head_.Finalize(writer))
|
|
return false;
|
|
|
|
// Copy the Clusters.
|
|
if (!ChunkedCopy(reader, writer, cluster_offset,
|
|
cluster_end_offset_ - cluster_offset))
|
|
return false;
|
|
|
|
// Update the Segment size in case the Cues size has changed.
|
|
const int64 pos = writer->Position();
|
|
const int64 segment_size = writer->Position() - payload_pos_;
|
|
if (writer->Position(size_position_) ||
|
|
WriteUIntSize(writer, segment_size, 8) || writer->Position(pos))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool Segment::Finalize() {
|
|
if (WriteFramesAll() < 0)
|
|
return false;
|
|
|
|
if (mode_ == kFile) {
|
|
if (cluster_list_size_ > 0) {
|
|
// Update last cluster's size
|
|
Cluster* const old_cluster = cluster_list_[cluster_list_size_ - 1];
|
|
|
|
if (!old_cluster || !old_cluster->Finalize())
|
|
return false;
|
|
}
|
|
|
|
if (chunking_ && chunk_writer_cluster_) {
|
|
chunk_writer_cluster_->Close();
|
|
chunk_count_++;
|
|
}
|
|
|
|
const double duration =
|
|
(static_cast<double>(last_timestamp_) + last_block_duration_) /
|
|
segment_info_.timecode_scale();
|
|
segment_info_.set_duration(duration);
|
|
if (!segment_info_.Finalize(writer_header_))
|
|
return false;
|
|
|
|
if (output_cues_)
|
|
if (!seek_head_.AddSeekEntry(kMkvCues, MaxOffset()))
|
|
return false;
|
|
|
|
if (chunking_) {
|
|
if (!chunk_writer_cues_)
|
|
return false;
|
|
|
|
char* name = NULL;
|
|
if (!UpdateChunkName("cues", &name))
|
|
return false;
|
|
|
|
const bool cues_open = chunk_writer_cues_->Open(name);
|
|
delete[] name;
|
|
if (!cues_open)
|
|
return false;
|
|
}
|
|
|
|
cluster_end_offset_ = writer_cluster_->Position();
|
|
|
|
// Write the seek headers and cues
|
|
if (output_cues_)
|
|
if (!cues_.Write(writer_cues_))
|
|
return false;
|
|
|
|
if (!seek_head_.Finalize(writer_header_))
|
|
return false;
|
|
|
|
if (writer_header_->Seekable()) {
|
|
if (size_position_ == -1)
|
|
return false;
|
|
|
|
const int64 pos = writer_header_->Position();
|
|
const int64 segment_size = MaxOffset();
|
|
|
|
if (segment_size < 1)
|
|
return false;
|
|
|
|
if (writer_header_->Position(size_position_))
|
|
return false;
|
|
|
|
if (WriteUIntSize(writer_header_, segment_size, 8))
|
|
return false;
|
|
|
|
if (writer_header_->Position(pos))
|
|
return false;
|
|
}
|
|
|
|
if (chunking_) {
|
|
// Do not close any writers until the segment size has been written,
|
|
// otherwise the size may be off.
|
|
if (!chunk_writer_cues_ || !chunk_writer_header_)
|
|
return false;
|
|
|
|
chunk_writer_cues_->Close();
|
|
chunk_writer_header_->Close();
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
Track* Segment::AddTrack(int32 number) {
|
|
Track* const track = new (std::nothrow) Track(&seed_); // NOLINT
|
|
|
|
if (!track)
|
|
return NULL;
|
|
|
|
if (!tracks_.AddTrack(track, number)) {
|
|
delete track;
|
|
return NULL;
|
|
}
|
|
|
|
return track;
|
|
}
|
|
|
|
Chapter* Segment::AddChapter() { return chapters_.AddChapter(&seed_); }
|
|
|
|
uint64 Segment::AddVideoTrack(int32 width, int32 height, int32 number) {
|
|
VideoTrack* const track = new (std::nothrow) VideoTrack(&seed_); // NOLINT
|
|
if (!track)
|
|
return 0;
|
|
|
|
track->set_type(Tracks::kVideo);
|
|
track->set_codec_id(Tracks::kVp8CodecId);
|
|
track->set_width(width);
|
|
track->set_height(height);
|
|
|
|
tracks_.AddTrack(track, number);
|
|
has_video_ = true;
|
|
|
|
return track->number();
|
|
}
|
|
|
|
bool Segment::AddCuePoint(uint64 timestamp, uint64 track) {
|
|
if (cluster_list_size_ < 1)
|
|
return false;
|
|
|
|
const Cluster* const cluster = cluster_list_[cluster_list_size_ - 1];
|
|
if (!cluster)
|
|
return false;
|
|
|
|
CuePoint* const cue = new (std::nothrow) CuePoint(); // NOLINT
|
|
if (!cue)
|
|
return false;
|
|
|
|
cue->set_time(timestamp / segment_info_.timecode_scale());
|
|
cue->set_block_number(cluster->blocks_added());
|
|
cue->set_cluster_pos(cluster->position_for_cues());
|
|
cue->set_track(track);
|
|
if (!cues_.AddCue(cue))
|
|
return false;
|
|
|
|
new_cuepoint_ = false;
|
|
return true;
|
|
}
|
|
|
|
uint64 Segment::AddAudioTrack(int32 sample_rate, int32 channels, int32 number) {
|
|
AudioTrack* const track = new (std::nothrow) AudioTrack(&seed_); // NOLINT
|
|
if (!track)
|
|
return 0;
|
|
|
|
track->set_type(Tracks::kAudio);
|
|
track->set_codec_id(Tracks::kVorbisCodecId);
|
|
track->set_sample_rate(sample_rate);
|
|
track->set_channels(channels);
|
|
|
|
tracks_.AddTrack(track, number);
|
|
|
|
return track->number();
|
|
}
|
|
|
|
bool Segment::AddFrame(const uint8* frame, uint64 length, uint64 track_number,
|
|
uint64 timestamp, bool is_key) {
|
|
if (!frame)
|
|
return false;
|
|
|
|
if (!CheckHeaderInfo())
|
|
return false;
|
|
|
|
// Check for non-monotonically increasing timestamps.
|
|
if (timestamp < last_timestamp_)
|
|
return false;
|
|
|
|
// If the segment has a video track hold onto audio frames to make sure the
|
|
// audio that is associated with the start time of a video key-frame is
|
|
// muxed into the same cluster.
|
|
if (has_video_ && tracks_.TrackIsAudio(track_number) && !force_new_cluster_) {
|
|
Frame* const new_frame = new (std::nothrow) Frame();
|
|
if (new_frame == NULL || !new_frame->Init(frame, length))
|
|
return false;
|
|
new_frame->set_track_number(track_number);
|
|
new_frame->set_timestamp(timestamp);
|
|
new_frame->set_is_key(is_key);
|
|
|
|
if (!QueueFrame(new_frame))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
if (!DoNewClusterProcessing(track_number, timestamp, is_key))
|
|
return false;
|
|
|
|
if (cluster_list_size_ < 1)
|
|
return false;
|
|
|
|
Cluster* const cluster = cluster_list_[cluster_list_size_ - 1];
|
|
if (!cluster)
|
|
return false;
|
|
|
|
const uint64 timecode_scale = segment_info_.timecode_scale();
|
|
const uint64 abs_timecode = timestamp / timecode_scale;
|
|
|
|
if (!cluster->AddFrame(frame, length, track_number, abs_timecode, is_key))
|
|
return false;
|
|
|
|
if (new_cuepoint_ && cues_track_ == track_number) {
|
|
if (!AddCuePoint(timestamp, cues_track_))
|
|
return false;
|
|
}
|
|
|
|
if (timestamp > last_timestamp_)
|
|
last_timestamp_ = timestamp;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Segment::AddFrameWithAdditional(const uint8* frame, uint64 length,
|
|
const uint8* additional,
|
|
uint64 additional_length, uint64 add_id,
|
|
uint64 track_number, uint64 timestamp,
|
|
bool is_key) {
|
|
if (frame == NULL || additional == NULL)
|
|
return false;
|
|
|
|
if (!CheckHeaderInfo())
|
|
return false;
|
|
|
|
// Check for non-monotonically increasing timestamps.
|
|
if (timestamp < last_timestamp_)
|
|
return false;
|
|
|
|
// If the segment has a video track hold onto audio frames to make sure the
|
|
// audio that is associated with the start time of a video key-frame is
|
|
// muxed into the same cluster.
|
|
if (has_video_ && tracks_.TrackIsAudio(track_number) && !force_new_cluster_) {
|
|
Frame* const new_frame = new (std::nothrow) Frame();
|
|
if (new_frame == NULL || !new_frame->Init(frame, length))
|
|
return false;
|
|
new_frame->set_track_number(track_number);
|
|
new_frame->set_timestamp(timestamp);
|
|
new_frame->set_is_key(is_key);
|
|
|
|
if (!QueueFrame(new_frame))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
if (!DoNewClusterProcessing(track_number, timestamp, is_key))
|
|
return false;
|
|
|
|
if (cluster_list_size_ < 1)
|
|
return false;
|
|
|
|
Cluster* const cluster = cluster_list_[cluster_list_size_ - 1];
|
|
if (cluster == NULL)
|
|
return false;
|
|
|
|
const uint64 timecode_scale = segment_info_.timecode_scale();
|
|
const uint64 abs_timecode = timestamp / timecode_scale;
|
|
|
|
if (!cluster->AddFrameWithAdditional(frame, length, additional,
|
|
additional_length, add_id, track_number,
|
|
abs_timecode, is_key))
|
|
return false;
|
|
|
|
if (new_cuepoint_ && cues_track_ == track_number) {
|
|
if (!AddCuePoint(timestamp, cues_track_))
|
|
return false;
|
|
}
|
|
|
|
if (timestamp > last_timestamp_)
|
|
last_timestamp_ = timestamp;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Segment::AddFrameWithDiscardPadding(const uint8* frame, uint64 length,
|
|
int64 discard_padding,
|
|
uint64 track_number, uint64 timestamp,
|
|
bool is_key) {
|
|
if (frame == NULL || discard_padding <= 0)
|
|
return false;
|
|
|
|
if (!CheckHeaderInfo())
|
|
return false;
|
|
|
|
// Check for non-monotonically increasing timestamps.
|
|
if (timestamp < last_timestamp_)
|
|
return false;
|
|
|
|
// If the segment has a video track hold onto audio frames to make sure the
|
|
// audio that is associated with the start time of a video key-frame is
|
|
// muxed into the same cluster.
|
|
if (has_video_ && tracks_.TrackIsAudio(track_number) && !force_new_cluster_) {
|
|
Frame* const new_frame = new (std::nothrow) Frame();
|
|
if (new_frame == NULL || !new_frame->Init(frame, length))
|
|
return false;
|
|
new_frame->set_track_number(track_number);
|
|
new_frame->set_timestamp(timestamp);
|
|
new_frame->set_is_key(is_key);
|
|
new_frame->set_discard_padding(discard_padding);
|
|
|
|
if (!QueueFrame(new_frame))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
if (!DoNewClusterProcessing(track_number, timestamp, is_key))
|
|
return false;
|
|
|
|
if (cluster_list_size_ < 1)
|
|
return false;
|
|
|
|
Cluster* const cluster = cluster_list_[cluster_list_size_ - 1];
|
|
if (!cluster)
|
|
return false;
|
|
|
|
const uint64 timecode_scale = segment_info_.timecode_scale();
|
|
const uint64 abs_timecode = timestamp / timecode_scale;
|
|
|
|
if (!cluster->AddFrameWithDiscardPadding(
|
|
frame, length, discard_padding, track_number, abs_timecode, is_key)) {
|
|
return false;
|
|
}
|
|
|
|
if (new_cuepoint_ && cues_track_ == track_number) {
|
|
if (!AddCuePoint(timestamp, cues_track_))
|
|
return false;
|
|
}
|
|
|
|
if (timestamp > last_timestamp_)
|
|
last_timestamp_ = timestamp;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Segment::AddMetadata(const uint8* frame, uint64 length,
|
|
uint64 track_number, uint64 timestamp_ns,
|
|
uint64 duration_ns) {
|
|
if (!frame)
|
|
return false;
|
|
|
|
if (!CheckHeaderInfo())
|
|
return false;
|
|
|
|
// Check for non-monotonically increasing timestamps.
|
|
if (timestamp_ns < last_timestamp_)
|
|
return false;
|
|
|
|
if (!DoNewClusterProcessing(track_number, timestamp_ns, true))
|
|
return false;
|
|
|
|
if (cluster_list_size_ < 1)
|
|
return false;
|
|
|
|
Cluster* const cluster = cluster_list_[cluster_list_size_ - 1];
|
|
|
|
if (!cluster)
|
|
return false;
|
|
|
|
const uint64 timecode_scale = segment_info_.timecode_scale();
|
|
const uint64 abs_timecode = timestamp_ns / timecode_scale;
|
|
const uint64 duration_timecode = duration_ns / timecode_scale;
|
|
|
|
if (!cluster->AddMetadata(frame, length, track_number, abs_timecode,
|
|
duration_timecode))
|
|
return false;
|
|
|
|
if (timestamp_ns > last_timestamp_)
|
|
last_timestamp_ = timestamp_ns;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Segment::AddGenericFrame(const Frame* frame) {
|
|
last_block_duration_ = frame->duration();
|
|
if (!tracks_.TrackIsAudio(frame->track_number()) &&
|
|
!tracks_.TrackIsVideo(frame->track_number()) && frame->duration() > 0) {
|
|
return AddMetadata(frame->frame(), frame->length(), frame->track_number(),
|
|
frame->timestamp(), frame->duration());
|
|
} else if (frame->additional() && frame->additional_length() > 0) {
|
|
return AddFrameWithAdditional(
|
|
frame->frame(), frame->length(), frame->additional(),
|
|
frame->additional_length(), frame->add_id(), frame->track_number(),
|
|
frame->timestamp(), frame->is_key());
|
|
} else if (frame->discard_padding() > 0) {
|
|
return AddFrameWithDiscardPadding(
|
|
frame->frame(), frame->length(), frame->discard_padding(),
|
|
frame->track_number(), frame->timestamp(), frame->is_key());
|
|
} else {
|
|
return AddFrame(frame->frame(), frame->length(), frame->track_number(),
|
|
frame->timestamp(), frame->is_key());
|
|
}
|
|
}
|
|
|
|
void Segment::OutputCues(bool output_cues) { output_cues_ = output_cues; }
|
|
|
|
bool Segment::SetChunking(bool chunking, const char* filename) {
|
|
if (chunk_count_ > 0)
|
|
return false;
|
|
|
|
if (chunking) {
|
|
if (!filename)
|
|
return false;
|
|
|
|
// Check if we are being set to what is already set.
|
|
if (chunking_ && !strcmp(filename, chunking_base_name_))
|
|
return true;
|
|
|
|
const size_t name_length = strlen(filename) + 1;
|
|
char* const temp = new (std::nothrow) char[name_length]; // NOLINT
|
|
if (!temp)
|
|
return false;
|
|
|
|
#ifdef _MSC_VER
|
|
strcpy_s(temp, name_length, filename);
|
|
#else
|
|
strcpy(temp, filename);
|
|
#endif
|
|
|
|
delete[] chunking_base_name_;
|
|
chunking_base_name_ = temp;
|
|
|
|
if (!UpdateChunkName("chk", &chunk_name_))
|
|
return false;
|
|
|
|
if (!chunk_writer_cluster_) {
|
|
chunk_writer_cluster_ = new (std::nothrow) MkvWriter(); // NOLINT
|
|
if (!chunk_writer_cluster_)
|
|
return false;
|
|
}
|
|
|
|
if (!chunk_writer_cues_) {
|
|
chunk_writer_cues_ = new (std::nothrow) MkvWriter(); // NOLINT
|
|
if (!chunk_writer_cues_)
|
|
return false;
|
|
}
|
|
|
|
if (!chunk_writer_header_) {
|
|
chunk_writer_header_ = new (std::nothrow) MkvWriter(); // NOLINT
|
|
if (!chunk_writer_header_)
|
|
return false;
|
|
}
|
|
|
|
if (!chunk_writer_cluster_->Open(chunk_name_))
|
|
return false;
|
|
|
|
const size_t header_length = strlen(filename) + strlen(".hdr") + 1;
|
|
char* const header = new (std::nothrow) char[header_length]; // NOLINT
|
|
if (!header)
|
|
return false;
|
|
|
|
#ifdef _MSC_VER
|
|
strcpy_s(header, header_length - strlen(".hdr"), chunking_base_name_);
|
|
strcat_s(header, header_length, ".hdr");
|
|
#else
|
|
strcpy(header, chunking_base_name_);
|
|
strcat(header, ".hdr");
|
|
#endif
|
|
if (!chunk_writer_header_->Open(header)) {
|
|
delete[] header;
|
|
return false;
|
|
}
|
|
|
|
writer_cluster_ = chunk_writer_cluster_;
|
|
writer_cues_ = chunk_writer_cues_;
|
|
writer_header_ = chunk_writer_header_;
|
|
|
|
delete[] header;
|
|
}
|
|
|
|
chunking_ = chunking;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Segment::CuesTrack(uint64 track_number) {
|
|
const Track* const track = GetTrackByNumber(track_number);
|
|
if (!track)
|
|
return false;
|
|
|
|
cues_track_ = track_number;
|
|
return true;
|
|
}
|
|
|
|
void Segment::ForceNewClusterOnNextFrame() { force_new_cluster_ = true; }
|
|
|
|
Track* Segment::GetTrackByNumber(uint64 track_number) const {
|
|
return tracks_.GetTrackByNumber(track_number);
|
|
}
|
|
|
|
bool Segment::WriteSegmentHeader() {
|
|
// TODO(fgalligan): Support more than one segment.
|
|
if (!WriteEbmlHeader(writer_header_))
|
|
return false;
|
|
|
|
// Write "unknown" (-1) as segment size value. If mode is kFile, Segment
|
|
// will write over duration when the file is finalized.
|
|
if (WriteID(writer_header_, kMkvSegment))
|
|
return false;
|
|
|
|
// Save for later.
|
|
size_position_ = writer_header_->Position();
|
|
|
|
// Write "unknown" (EBML coded -1) as segment size value. We need to write 8
|
|
// bytes because if we are going to overwrite the segment size later we do
|
|
// not know how big our segment will be.
|
|
if (SerializeInt(writer_header_, kEbmlUnknownValue, 8))
|
|
return false;
|
|
|
|
payload_pos_ = writer_header_->Position();
|
|
|
|
if (mode_ == kFile && writer_header_->Seekable()) {
|
|
// Set the duration > 0.0 so SegmentInfo will write out the duration. When
|
|
// the muxer is done writing we will set the correct duration and have
|
|
// SegmentInfo upadte it.
|
|
segment_info_.set_duration(1.0);
|
|
|
|
if (!seek_head_.Write(writer_header_))
|
|
return false;
|
|
}
|
|
|
|
if (!seek_head_.AddSeekEntry(kMkvInfo, MaxOffset()))
|
|
return false;
|
|
if (!segment_info_.Write(writer_header_))
|
|
return false;
|
|
|
|
if (!seek_head_.AddSeekEntry(kMkvTracks, MaxOffset()))
|
|
return false;
|
|
if (!tracks_.Write(writer_header_))
|
|
return false;
|
|
|
|
if (chapters_.Count() > 0) {
|
|
if (!seek_head_.AddSeekEntry(kMkvChapters, MaxOffset()))
|
|
return false;
|
|
if (!chapters_.Write(writer_header_))
|
|
return false;
|
|
}
|
|
|
|
if (chunking_ && (mode_ == kLive || !writer_header_->Seekable())) {
|
|
if (!chunk_writer_header_)
|
|
return false;
|
|
|
|
chunk_writer_header_->Close();
|
|
}
|
|
|
|
header_written_ = true;
|
|
|
|
return true;
|
|
}
|
|
|
|
// Here we are testing whether to create a new cluster, given a frame
|
|
// having time frame_timestamp_ns.
|
|
//
|
|
int Segment::TestFrame(uint64 track_number, uint64 frame_timestamp_ns,
|
|
bool is_key) const {
|
|
if (force_new_cluster_)
|
|
return 1;
|
|
|
|
// If no clusters have been created yet, then create a new cluster
|
|
// and write this frame immediately, in the new cluster. This path
|
|
// should only be followed once, the first time we attempt to write
|
|
// a frame.
|
|
|
|
if (cluster_list_size_ <= 0)
|
|
return 1;
|
|
|
|
// There exists at least one cluster. We must compare the frame to
|
|
// the last cluster, in order to determine whether the frame is
|
|
// written to the existing cluster, or that a new cluster should be
|
|
// created.
|
|
|
|
const uint64 timecode_scale = segment_info_.timecode_scale();
|
|
const uint64 frame_timecode = frame_timestamp_ns / timecode_scale;
|
|
|
|
const Cluster* const last_cluster = cluster_list_[cluster_list_size_ - 1];
|
|
const uint64 last_cluster_timecode = last_cluster->timecode();
|
|
|
|
// For completeness we test for the case when the frame's timecode
|
|
// is less than the cluster's timecode. Although in principle that
|
|
// is allowed, this muxer doesn't actually write clusters like that,
|
|
// so this indicates a bug somewhere in our algorithm.
|
|
|
|
if (frame_timecode < last_cluster_timecode) // should never happen
|
|
return -1;
|
|
|
|
// If the frame has a timestamp significantly larger than the last
|
|
// cluster (in Matroska, cluster-relative timestamps are serialized
|
|
// using a 16-bit signed integer), then we cannot write this frame
|
|
// to that cluster, and so we must create a new cluster.
|
|
|
|
const int64 delta_timecode = frame_timecode - last_cluster_timecode;
|
|
|
|
if (delta_timecode > kMaxBlockTimecode)
|
|
return 2;
|
|
|
|
// We decide to create a new cluster when we have a video keyframe.
|
|
// This will flush queued (audio) frames, and write the keyframe
|
|
// immediately, in the newly-created cluster.
|
|
|
|
if (is_key && tracks_.TrackIsVideo(track_number))
|
|
return 1;
|
|
|
|
// Create a new cluster if we have accumulated too many frames
|
|
// already, where "too many" is defined as "the total time of frames
|
|
// in the cluster exceeds a threshold".
|
|
|
|
const uint64 delta_ns = delta_timecode * timecode_scale;
|
|
|
|
if (max_cluster_duration_ > 0 && delta_ns >= max_cluster_duration_)
|
|
return 1;
|
|
|
|
// This is similar to the case above, with the difference that a new
|
|
// cluster is created when the size of the current cluster exceeds a
|
|
// threshold.
|
|
|
|
const uint64 cluster_size = last_cluster->payload_size();
|
|
|
|
if (max_cluster_size_ > 0 && cluster_size >= max_cluster_size_)
|
|
return 1;
|
|
|
|
// There's no need to create a new cluster, so emit this frame now.
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool Segment::MakeNewCluster(uint64 frame_timestamp_ns) {
|
|
const int32 new_size = cluster_list_size_ + 1;
|
|
|
|
if (new_size > cluster_list_capacity_) {
|
|
// Add more clusters.
|
|
const int32 new_capacity =
|
|
(cluster_list_capacity_ <= 0) ? 1 : cluster_list_capacity_ * 2;
|
|
Cluster** const clusters =
|
|
new (std::nothrow) Cluster* [new_capacity]; // NOLINT
|
|
if (!clusters)
|
|
return false;
|
|
|
|
for (int32 i = 0; i < cluster_list_size_; ++i) {
|
|
clusters[i] = cluster_list_[i];
|
|
}
|
|
|
|
delete[] cluster_list_;
|
|
|
|
cluster_list_ = clusters;
|
|
cluster_list_capacity_ = new_capacity;
|
|
}
|
|
|
|
if (!WriteFramesLessThan(frame_timestamp_ns))
|
|
return false;
|
|
|
|
if (mode_ == kFile) {
|
|
if (cluster_list_size_ > 0) {
|
|
// Update old cluster's size
|
|
Cluster* const old_cluster = cluster_list_[cluster_list_size_ - 1];
|
|
|
|
if (!old_cluster || !old_cluster->Finalize())
|
|
return false;
|
|
}
|
|
|
|
if (output_cues_)
|
|
new_cuepoint_ = true;
|
|
}
|
|
|
|
if (chunking_ && cluster_list_size_ > 0) {
|
|
chunk_writer_cluster_->Close();
|
|
chunk_count_++;
|
|
|
|
if (!UpdateChunkName("chk", &chunk_name_))
|
|
return false;
|
|
if (!chunk_writer_cluster_->Open(chunk_name_))
|
|
return false;
|
|
}
|
|
|
|
const uint64 timecode_scale = segment_info_.timecode_scale();
|
|
const uint64 frame_timecode = frame_timestamp_ns / timecode_scale;
|
|
|
|
uint64 cluster_timecode = frame_timecode;
|
|
|
|
if (frames_size_ > 0) {
|
|
const Frame* const f = frames_[0]; // earliest queued frame
|
|
const uint64 ns = f->timestamp();
|
|
const uint64 tc = ns / timecode_scale;
|
|
|
|
if (tc < cluster_timecode)
|
|
cluster_timecode = tc;
|
|
}
|
|
|
|
Cluster*& cluster = cluster_list_[cluster_list_size_];
|
|
const int64 offset = MaxOffset();
|
|
cluster = new (std::nothrow) Cluster(cluster_timecode, offset); // NOLINT
|
|
if (!cluster)
|
|
return false;
|
|
|
|
if (!cluster->Init(writer_cluster_))
|
|
return false;
|
|
|
|
cluster_list_size_ = new_size;
|
|
return true;
|
|
}
|
|
|
|
bool Segment::DoNewClusterProcessing(uint64 track_number,
|
|
uint64 frame_timestamp_ns, bool is_key) {
|
|
for (;;) {
|
|
// Based on the characteristics of the current frame and current
|
|
// cluster, decide whether to create a new cluster.
|
|
const int result = TestFrame(track_number, frame_timestamp_ns, is_key);
|
|
if (result < 0) // error
|
|
return false;
|
|
|
|
// Always set force_new_cluster_ to false after TestFrame.
|
|
force_new_cluster_ = false;
|
|
|
|
// A non-zero result means create a new cluster.
|
|
if (result > 0 && !MakeNewCluster(frame_timestamp_ns))
|
|
return false;
|
|
|
|
// Write queued (audio) frames.
|
|
const int frame_count = WriteFramesAll();
|
|
if (frame_count < 0) // error
|
|
return false;
|
|
|
|
// Write the current frame to the current cluster (if TestFrame
|
|
// returns 0) or to a newly created cluster (TestFrame returns 1).
|
|
if (result <= 1)
|
|
return true;
|
|
|
|
// TestFrame returned 2, which means there was a large time
|
|
// difference between the cluster and the frame itself. Do the
|
|
// test again, comparing the frame to the new cluster.
|
|
}
|
|
}
|
|
|
|
bool Segment::CheckHeaderInfo() {
|
|
if (!header_written_) {
|
|
if (!WriteSegmentHeader())
|
|
return false;
|
|
|
|
if (!seek_head_.AddSeekEntry(kMkvCluster, MaxOffset()))
|
|
return false;
|
|
|
|
if (output_cues_ && cues_track_ == 0) {
|
|
// Check for a video track
|
|
for (uint32 i = 0; i < tracks_.track_entries_size(); ++i) {
|
|
const Track* const track = tracks_.GetTrackByIndex(i);
|
|
if (!track)
|
|
return false;
|
|
|
|
if (tracks_.TrackIsVideo(track->number())) {
|
|
cues_track_ = track->number();
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Set first track found
|
|
if (cues_track_ == 0) {
|
|
const Track* const track = tracks_.GetTrackByIndex(0);
|
|
if (!track)
|
|
return false;
|
|
|
|
cues_track_ = track->number();
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool Segment::UpdateChunkName(const char* ext, char** name) const {
|
|
if (!name || !ext)
|
|
return false;
|
|
|
|
char ext_chk[64];
|
|
#ifdef _MSC_VER
|
|
sprintf_s(ext_chk, sizeof(ext_chk), "_%06d.%s", chunk_count_, ext);
|
|
#else
|
|
snprintf(ext_chk, sizeof(ext_chk), "_%06d.%s", chunk_count_, ext);
|
|
#endif
|
|
|
|
const size_t length = strlen(chunking_base_name_) + strlen(ext_chk) + 1;
|
|
char* const str = new (std::nothrow) char[length]; // NOLINT
|
|
if (!str)
|
|
return false;
|
|
|
|
#ifdef _MSC_VER
|
|
strcpy_s(str, length - strlen(ext_chk), chunking_base_name_);
|
|
strcat_s(str, length, ext_chk);
|
|
#else
|
|
strcpy(str, chunking_base_name_);
|
|
strcat(str, ext_chk);
|
|
#endif
|
|
|
|
delete[] * name;
|
|
*name = str;
|
|
|
|
return true;
|
|
}
|
|
|
|
int64 Segment::MaxOffset() {
|
|
if (!writer_header_)
|
|
return -1;
|
|
|
|
int64 offset = writer_header_->Position() - payload_pos_;
|
|
|
|
if (chunking_) {
|
|
for (int32 i = 0; i < cluster_list_size_; ++i) {
|
|
Cluster* const cluster = cluster_list_[i];
|
|
offset += cluster->Size();
|
|
}
|
|
|
|
if (writer_cues_)
|
|
offset += writer_cues_->Position();
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
bool Segment::QueueFrame(Frame* frame) {
|
|
const int32 new_size = frames_size_ + 1;
|
|
|
|
if (new_size > frames_capacity_) {
|
|
// Add more frames.
|
|
const int32 new_capacity = (!frames_capacity_) ? 2 : frames_capacity_ * 2;
|
|
|
|
if (new_capacity < 1)
|
|
return false;
|
|
|
|
Frame** const frames = new (std::nothrow) Frame* [new_capacity]; // NOLINT
|
|
if (!frames)
|
|
return false;
|
|
|
|
for (int32 i = 0; i < frames_size_; ++i) {
|
|
frames[i] = frames_[i];
|
|
}
|
|
|
|
delete[] frames_;
|
|
frames_ = frames;
|
|
frames_capacity_ = new_capacity;
|
|
}
|
|
|
|
frames_[frames_size_++] = frame;
|
|
|
|
return true;
|
|
}
|
|
|
|
int Segment::WriteFramesAll() {
|
|
if (frames_ == NULL)
|
|
return 0;
|
|
|
|
if (cluster_list_size_ < 1)
|
|
return -1;
|
|
|
|
Cluster* const cluster = cluster_list_[cluster_list_size_ - 1];
|
|
|
|
if (!cluster)
|
|
return -1;
|
|
|
|
const uint64 timecode_scale = segment_info_.timecode_scale();
|
|
|
|
for (int32 i = 0; i < frames_size_; ++i) {
|
|
Frame*& frame = frames_[i];
|
|
const uint64 frame_timestamp = frame->timestamp(); // ns
|
|
const uint64 frame_timecode = frame_timestamp / timecode_scale;
|
|
|
|
if (frame->discard_padding() > 0) {
|
|
if (!cluster->AddFrameWithDiscardPadding(
|
|
frame->frame(), frame->length(), frame->discard_padding(),
|
|
frame->track_number(), frame_timecode, frame->is_key())) {
|
|
return -1;
|
|
}
|
|
} else {
|
|
if (!cluster->AddFrame(frame->frame(), frame->length(),
|
|
frame->track_number(), frame_timecode,
|
|
frame->is_key())) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (new_cuepoint_ && cues_track_ == frame->track_number()) {
|
|
if (!AddCuePoint(frame_timestamp, cues_track_))
|
|
return -1;
|
|
}
|
|
|
|
if (frame_timestamp > last_timestamp_)
|
|
last_timestamp_ = frame_timestamp;
|
|
|
|
delete frame;
|
|
frame = NULL;
|
|
}
|
|
|
|
const int result = frames_size_;
|
|
frames_size_ = 0;
|
|
|
|
return result;
|
|
}
|
|
|
|
bool Segment::WriteFramesLessThan(uint64 timestamp) {
|
|
// Check |cluster_list_size_| to see if this is the first cluster. If it is
|
|
// the first cluster the audio frames that are less than the first video
|
|
// timesatmp will be written in a later step.
|
|
if (frames_size_ > 0 && cluster_list_size_ > 0) {
|
|
if (!frames_)
|
|
return false;
|
|
|
|
Cluster* const cluster = cluster_list_[cluster_list_size_ - 1];
|
|
if (!cluster)
|
|
return false;
|
|
|
|
const uint64 timecode_scale = segment_info_.timecode_scale();
|
|
int32 shift_left = 0;
|
|
|
|
// TODO(fgalligan): Change this to use the durations of frames instead of
|
|
// the next frame's start time if the duration is accurate.
|
|
for (int32 i = 1; i < frames_size_; ++i) {
|
|
const Frame* const frame_curr = frames_[i];
|
|
|
|
if (frame_curr->timestamp() > timestamp)
|
|
break;
|
|
|
|
const Frame* const frame_prev = frames_[i - 1];
|
|
const uint64 frame_timestamp = frame_prev->timestamp();
|
|
const uint64 frame_timecode = frame_timestamp / timecode_scale;
|
|
const int64 discard_padding = frame_prev->discard_padding();
|
|
|
|
if (discard_padding > 0) {
|
|
if (!cluster->AddFrameWithDiscardPadding(
|
|
frame_prev->frame(), frame_prev->length(), discard_padding,
|
|
frame_prev->track_number(), frame_timecode,
|
|
frame_prev->is_key())) {
|
|
return false;
|
|
}
|
|
} else {
|
|
if (!cluster->AddFrame(frame_prev->frame(), frame_prev->length(),
|
|
frame_prev->track_number(), frame_timecode,
|
|
frame_prev->is_key())) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (new_cuepoint_ && cues_track_ == frame_prev->track_number()) {
|
|
if (!AddCuePoint(frame_timestamp, cues_track_))
|
|
return false;
|
|
}
|
|
|
|
++shift_left;
|
|
if (frame_timestamp > last_timestamp_)
|
|
last_timestamp_ = frame_timestamp;
|
|
|
|
delete frame_prev;
|
|
}
|
|
|
|
if (shift_left > 0) {
|
|
if (shift_left >= frames_size_)
|
|
return false;
|
|
|
|
const int32 new_frames_size = frames_size_ - shift_left;
|
|
for (int32 i = 0; i < new_frames_size; ++i) {
|
|
frames_[i] = frames_[i + shift_left];
|
|
}
|
|
|
|
frames_size_ = new_frames_size;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
} // namespace mkvmuxer
|