diff options
Diffstat (limited to 'externals/g3dlite/G3D.lib/source/BinaryOutput.cpp')
| -rw-r--r-- | externals/g3dlite/G3D.lib/source/BinaryOutput.cpp | 518 |
1 files changed, 0 insertions, 518 deletions
diff --git a/externals/g3dlite/G3D.lib/source/BinaryOutput.cpp b/externals/g3dlite/G3D.lib/source/BinaryOutput.cpp deleted file mode 100644 index 8fcc30e548f..00000000000 --- a/externals/g3dlite/G3D.lib/source/BinaryOutput.cpp +++ /dev/null @@ -1,518 +0,0 @@ -/** - @file BinaryOutput.cpp - - @author Morgan McGuire, graphics3d.com - Copyright 2002-2007, Morgan McGuire, All rights reserved. - - @created 2002-02-20 - @edited 2008-01-07 - */ - -#include "G3D/platform.h" -#include "G3D/BinaryOutput.h" -#include "G3D/fileutils.h" -#include "G3D/stringutils.h" -#include "G3D/Array.h" -#include <zlib.h> - -#include <cstring> - -// Largest memory buffer that the system will use for writing to -// disk. After this (or if the system runs out of memory) -// chunks of the file will be dumped to disk. -// -// Currently 400 MB -#define MAX_BINARYOUTPUT_BUFFER_SIZE 400000000 - -namespace G3D { - -void BinaryOutput::writeBool8(const std::vector<bool>& out, int n) { - for (int i = 0; i < n; ++i) { - writeBool8(out[i]); - } -} - - -void BinaryOutput::writeBool8(const Array<bool>& out, int n) { - writeBool8(out.getCArray(), n); -} - -#define IMPLEMENT_WRITER(ucase, lcase)\ -void BinaryOutput::write##ucase(const std::vector<lcase>& out, int n) {\ - write##ucase(&out[0], n);\ -}\ -\ -\ -void BinaryOutput::write##ucase(const Array<lcase>& out, int n) {\ - write##ucase(out.getCArray(), n);\ -} - - -IMPLEMENT_WRITER(UInt8, uint8) -IMPLEMENT_WRITER(Int8, int8) -IMPLEMENT_WRITER(UInt16, uint16) -IMPLEMENT_WRITER(Int16, int16) -IMPLEMENT_WRITER(UInt32, uint32) -IMPLEMENT_WRITER(Int32, int32) -IMPLEMENT_WRITER(UInt64, uint64) -IMPLEMENT_WRITER(Int64, int64) -IMPLEMENT_WRITER(Float32, float32) -IMPLEMENT_WRITER(Float64, float64) - -#undef IMPLEMENT_WRITER - -// Data structures that are one byte per element can be -// directly copied, regardles of endian-ness. -#define IMPLEMENT_WRITER(ucase, lcase)\ -void BinaryOutput::write##ucase(const lcase* out, int n) {\ - if (sizeof(lcase) == 1) {\ - writeBytes((void*)out, n);\ - } else {\ - for (int i = 0; i < n ; ++i) {\ - write##ucase(out[i]);\ - }\ - }\ -} - -IMPLEMENT_WRITER(Bool8, bool) -IMPLEMENT_WRITER(UInt8, uint8) -IMPLEMENT_WRITER(Int8, int8) - -#undef IMPLEMENT_WRITER - - -#define IMPLEMENT_WRITER(ucase, lcase)\ -void BinaryOutput::write##ucase(const lcase* out, int n) {\ - if (m_swapBytes) {\ - for (int i = 0; i < n; ++i) {\ - write##ucase(out[i]);\ - }\ - } else {\ - writeBytes((const void*)out, sizeof(lcase) * n);\ - }\ -} - - -IMPLEMENT_WRITER(UInt16, uint16) -IMPLEMENT_WRITER(Int16, int16) -IMPLEMENT_WRITER(UInt32, uint32) -IMPLEMENT_WRITER(Int32, int32) -IMPLEMENT_WRITER(UInt64, uint64) -IMPLEMENT_WRITER(Int64, int64) -IMPLEMENT_WRITER(Float32, float32) -IMPLEMENT_WRITER(Float64, float64) - -#undef IMPLEMENT_WRITER - - -void BinaryOutput::reallocBuffer(size_t bytes, size_t oldBufferLen) { - //debugPrintf("reallocBuffer(%d, %d)\n", bytes, oldBufferLen); - - size_t newBufferLen = (int)(m_bufferLen * 1.5) + 100; - uint8* newBuffer = NULL; - - if ((m_filename == "<memory>") || (newBufferLen < MAX_BINARYOUTPUT_BUFFER_SIZE)) { - // We're either writing to memory (in which case we *have* to try and allocate) - // or we've been asked to allocate a reasonable size buffer. - - //debugPrintf(" realloc(%d)\n", newBufferLen); - newBuffer = (uint8*)System::realloc(m_buffer, newBufferLen); - if (newBuffer != NULL) { - m_maxBufferLen = newBufferLen; - } - } - - if ((newBuffer == NULL) && (bytes > 0)) { - // Realloc failed; we're probably out of memory. Back out - // the entire call and try to dump some data to disk. - m_bufferLen = oldBufferLen; - reserveBytesWhenOutOfMemory(bytes); - } else { - m_buffer = newBuffer; - debugAssert(isValidHeapPointer(m_buffer)); - } -} - - -void BinaryOutput::reserveBytesWhenOutOfMemory(size_t bytes) { - if (m_filename == "<memory>") { - throw "Out of memory while writing to memory in BinaryOutput (no RAM left)."; - } else if ((int)bytes > (int)m_maxBufferLen) { - throw "Out of memory while writing to disk in BinaryOutput (could not create a large enough buffer)."; - } else { - - // Dump the contents to disk. In order to enable seeking backwards, - // we keep the last 10 MB in memory. - int writeBytes = m_bufferLen - 10 * 1024 * 1024; - - if (writeBytes < m_bufferLen / 3) { - // We're going to write less than 1/3 of the file; - // give up and just write the whole thing. - writeBytes = m_bufferLen; - } - debugAssert(writeBytes > 0); - - //debugPrintf("Writing %d bytes to disk\n", writeBytes); - - const char* mode = (m_alreadyWritten > 0) ? "ab" : "wb"; - FILE* file = fopen(m_filename.c_str(), mode); - debugAssert(file); - - size_t count = fwrite(m_buffer, 1, writeBytes, file); - debugAssert((int)count == writeBytes); (void)count; - - fclose(file); - file = NULL; - - // Record that we saved this data. - m_alreadyWritten += writeBytes; - m_bufferLen -= writeBytes; - m_pos -= writeBytes; - - debugAssert(m_bufferLen < m_maxBufferLen); - debugAssert(m_bufferLen >= 0); - debugAssert(m_pos >= 0); - debugAssert(m_pos <= m_bufferLen); - - // Shift the unwritten data back appropriately in the buffer. - debugAssert(isValidHeapPointer(m_buffer)); - System::memcpy(m_buffer, m_buffer + writeBytes, m_bufferLen); - debugAssert(isValidHeapPointer(m_buffer)); - - // *now* we allocate bytes (there should presumably be enough - // space in the buffer; if not, we'll come back through this - // code and dump the last 10MB to disk as well. Note that the - // bytes > maxBufferLen case above would already have triggered - // if this call couldn't succeed. - reserveBytes(bytes); - } -} - - -BinaryOutput::BinaryOutput() { - m_alreadyWritten = 0; - m_swapBytes = false; - m_pos = 0; - m_filename = "<memory>"; - m_buffer = NULL; - m_bufferLen = 0; - m_maxBufferLen = 0; - m_beginEndBits = 0; - m_bitString = 0; - m_bitPos = 0; - m_ok = true; - m_committed = false; -} - - -BinaryOutput::BinaryOutput( - const std::string& filename, - G3DEndian fileEndian) { - - m_pos = 0; - m_alreadyWritten = 0; - setEndian(fileEndian); - m_filename = filename; - m_buffer = NULL; - m_bufferLen = 0; - m_maxBufferLen = 0; - m_beginEndBits = 0; - m_bitString = 0; - m_bitPos = 0; - m_committed = false; - - m_ok = true; - /** Verify ability to write to disk */ - commit(false); - m_committed = false; -} - - -void BinaryOutput::reset() { - debugAssert(m_beginEndBits == 0); - alwaysAssertM(m_filename == "<memory>", - "Can only reset a BinaryOutput that writes to memory."); - - // Do not reallocate, just clear the size of the buffer. - m_pos = 0; - m_alreadyWritten = 0; - m_bufferLen = 0; - m_beginEndBits = 0; - m_bitString = 0; - m_bitPos = 0; - m_committed = false; -} - - -BinaryOutput::~BinaryOutput() { - debugAssert((m_buffer == NULL) || isValidHeapPointer(m_buffer)); - System::free(m_buffer); - m_buffer = NULL; - m_bufferLen = 0; - m_maxBufferLen = 0; -} - - -void BinaryOutput::setEndian(G3DEndian fileEndian) { - m_fileEndian = fileEndian; - m_swapBytes = (fileEndian != System::machineEndian()); -} - - -bool BinaryOutput::ok() const { - return m_ok; -} - - -void BinaryOutput::compress() { - if (m_alreadyWritten > 0) { - throw "Cannot compress huge files (part of this file has already been written to disk)."; - } - - // Old buffer size - int L = m_bufferLen; - uint8* convert = (uint8*)&L; - - // Zlib requires the output buffer to be this big - unsigned long newSize = iCeil(m_bufferLen * 1.01) + 12; - uint8* temp = (uint8*)System::malloc(newSize); - int result = compress2(temp, &newSize, m_buffer, m_bufferLen, 9); - - debugAssert(result == Z_OK); (void)result; - - // Write the header - if (m_swapBytes) { - m_buffer[0] = convert[3]; - m_buffer[1] = convert[2]; - m_buffer[2] = convert[1]; - m_buffer[3] = convert[0]; - } else { - m_buffer[0] = convert[0]; - m_buffer[1] = convert[1]; - m_buffer[2] = convert[2]; - m_buffer[3] = convert[3]; - } - - // Write the data - if ((int64)newSize + 4 > (int64)m_maxBufferLen) { - m_maxBufferLen = newSize + 4; - m_buffer = (uint8*)System::realloc(m_buffer, m_maxBufferLen); - } - m_bufferLen = newSize + 4; - System::memcpy(m_buffer + 4, temp, newSize); - m_pos = m_bufferLen; - - System::free(temp); -} - - -void BinaryOutput::commit(bool flush) { - debugAssertM(! m_committed, "Cannot commit twice"); - m_committed = true; - debugAssertM(m_beginEndBits == 0, "Missing endBits before commit"); - - // Make sure the directory exists. - std::string root, base, ext, path; - Array<std::string> pathArray; - parseFilename(m_filename, root, pathArray, base, ext); - - path = root + stringJoin(pathArray, '/'); - if (! fileExists(path, false)) { - createDirectory(path); - } - - const char* mode = (m_alreadyWritten > 0) ? "ab" : "wb"; - - FILE* file = fopen(m_filename.c_str(), mode); - - m_ok = (file != NULL) && m_ok; - - if (m_ok) { - debugAssertM(file, std::string("Could not open '") + m_filename + "'"); - - m_alreadyWritten += m_bufferLen; - - fwrite(m_buffer, m_bufferLen, 1, file); - if (flush) { - fflush(file); - } - fclose(file); - file = NULL; - } -} - - -void BinaryOutput::commit( - uint8* out) { - debugAssertM(! m_committed, "Cannot commit twice"); - m_committed = true; - - System::memcpy(out, m_buffer, m_bufferLen); -} - - -void BinaryOutput::writeUInt16(uint16 u) { - reserveBytes(2); - - uint8* convert = (uint8*)&u; - - if (m_swapBytes) { - m_buffer[m_pos] = convert[1]; - m_buffer[m_pos + 1] = convert[0]; - } else { - *(uint16*)(m_buffer + m_pos) = u; - } - - m_pos += 2; -} - - -void BinaryOutput::writeUInt32(uint32 u) { - reserveBytes(4); - - uint8* convert = (uint8*)&u; - - debugAssert(m_beginEndBits == 0); - - if (m_swapBytes) { - m_buffer[m_pos] = convert[3]; - m_buffer[m_pos + 1] = convert[2]; - m_buffer[m_pos + 2] = convert[1]; - m_buffer[m_pos + 3] = convert[0]; - } else { - *(uint32*)(m_buffer + m_pos) = u; - } - - m_pos += 4; -} - - -void BinaryOutput::writeUInt64(uint64 u) { - reserveBytes(8); - - uint8* convert = (uint8*)&u; - - if (m_swapBytes) { - m_buffer[m_pos] = convert[7]; - m_buffer[m_pos + 1] = convert[6]; - m_buffer[m_pos + 2] = convert[5]; - m_buffer[m_pos + 3] = convert[4]; - m_buffer[m_pos + 4] = convert[3]; - m_buffer[m_pos + 5] = convert[2]; - m_buffer[m_pos + 6] = convert[1]; - m_buffer[m_pos + 7] = convert[0]; - } else { - *(uint64*)(m_buffer + m_pos) = u; - } - - m_pos += 8; -} - - -void BinaryOutput::writeString(const char* s) { - // +1 is because strlen doesn't count the null - int len = strlen(s) + 1; - - debugAssert(m_beginEndBits == 0); - reserveBytes(len); - System::memcpy(m_buffer + m_pos, s, len); - m_pos += len; -} - - -void BinaryOutput::writeStringEven(const char* s) { - // +1 is because strlen doesn't count the null - int len = strlen(s) + 1; - - reserveBytes(len); - System::memcpy(m_buffer + m_pos, s, len); - m_pos += len; - - // Pad with another NULL - if ((len % 2) == 1) { - writeUInt8(0); - } -} - - -void BinaryOutput::writeString32(const char* s) { - writeUInt32(strlen(s) + 1); - writeString(s); -} - - -void BinaryOutput::writeVector4(const Vector4& v) { - writeFloat32(v.x); - writeFloat32(v.y); - writeFloat32(v.z); - writeFloat32(v.w); -} - - -void BinaryOutput::writeVector3(const Vector3& v) { - writeFloat32(v.x); - writeFloat32(v.y); - writeFloat32(v.z); -} - - -void BinaryOutput::writeVector2(const Vector2& v) { - writeFloat32(v.x); - writeFloat32(v.y); -} - - -void BinaryOutput::writeColor4(const Color4& v) { - writeFloat32(v.r); - writeFloat32(v.g); - writeFloat32(v.b); - writeFloat32(v.a); -} - - -void BinaryOutput::writeColor3(const Color3& v) { - writeFloat32(v.r); - writeFloat32(v.g); - writeFloat32(v.b); -} - - -void BinaryOutput::beginBits() { - debugAssertM(m_beginEndBits == 0, "Already in beginBits...endBits"); - m_bitString = 0x00; - m_bitPos = 0; - m_beginEndBits = 1; -} - - -void BinaryOutput::writeBits(uint32 value, int numBits) { - - while (numBits > 0) { - // Extract the current bit of value and - // insert it into the current byte - m_bitString |= (value & 1) << m_bitPos; - ++m_bitPos; - value = value >> 1; - --numBits; - - if (m_bitPos > 7) { - // We've reached the end of this byte - writeUInt8(m_bitString); - m_bitString = 0x00; - m_bitPos = 0; - } - } -} - - -void BinaryOutput::endBits() { - debugAssertM(m_beginEndBits == 1, "Not in beginBits...endBits"); - if (m_bitPos > 0) { - writeUInt8(m_bitString); - } - m_bitString = 0; - m_bitPos = 0; - m_beginEndBits = 0; -} - -} |