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
133 lines
2.4 KiB
C++
133 lines
2.4 KiB
C++
// Copyright (c) 2010 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 "mkvreader.hpp"
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#include <cassert>
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namespace mkvparser {
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MkvReader::MkvReader() : m_file(NULL), reader_owns_file_(true) {}
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MkvReader::MkvReader(FILE* fp) : m_file(fp), reader_owns_file_(false) {
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GetFileSize();
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}
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MkvReader::~MkvReader() {
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if (reader_owns_file_)
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Close();
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m_file = NULL;
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}
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int MkvReader::Open(const char* fileName) {
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if (fileName == NULL)
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return -1;
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if (m_file)
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return -1;
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#ifdef _MSC_VER
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const errno_t e = fopen_s(&m_file, fileName, "rb");
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if (e)
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return -1; // error
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#else
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m_file = fopen(fileName, "rb");
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if (m_file == NULL)
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return -1;
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#endif
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return !GetFileSize();
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}
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bool MkvReader::GetFileSize() {
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if (m_file == NULL)
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return false;
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#ifdef _MSC_VER
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int status = _fseeki64(m_file, 0L, SEEK_END);
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if (status)
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return false; // error
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m_length = _ftelli64(m_file);
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#else
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fseek(m_file, 0L, SEEK_END);
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m_length = ftell(m_file);
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#endif
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assert(m_length >= 0);
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if (m_length < 0)
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return false;
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#ifdef _MSC_VER
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status = _fseeki64(m_file, 0L, SEEK_SET);
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if (status)
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return false; // error
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#else
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fseek(m_file, 0L, SEEK_SET);
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#endif
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return true;
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}
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void MkvReader::Close() {
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if (m_file != NULL) {
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fclose(m_file);
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m_file = NULL;
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}
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}
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int MkvReader::Length(long long* total, long long* available) {
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if (m_file == NULL)
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return -1;
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if (total)
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*total = m_length;
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if (available)
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*available = m_length;
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return 0;
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}
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int MkvReader::Read(long long offset, long len, unsigned char* buffer) {
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if (m_file == NULL)
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return -1;
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if (offset < 0)
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return -1;
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if (len < 0)
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return -1;
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if (len == 0)
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return 0;
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if (offset >= m_length)
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return -1;
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#ifdef _MSC_VER
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const int status = _fseeki64(m_file, offset, SEEK_SET);
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if (status)
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return -1; // error
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#else
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fseek(m_file, offset, SEEK_SET);
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#endif
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const size_t size = fread(buffer, 1, len, m_file);
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if (size < size_t(len))
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return -1; // error
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return 0; // success
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}
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} // end namespace mkvparser
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