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#include "XBTFWriter.h"
#include "EndianSwap.h"
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
#define TEMP_FILE "temp.xbt"
#define TEMP_SIZE (10*1024*1024)
#define WRITE_STR(str, size, file) fwrite(str, size, 1, file)
#define WRITE_U32(i, file) { uint32_t _n = Endian_SwapLE32(i); fwrite(&_n, 4, 1, file); }
#define WRITE_U64(i, file) { uint64_t _n = i; _n = Endian_SwapLE64(i); fwrite(&_n, 8, 1, file); }
CXBTFWriter::CXBTFWriter(CXBTF& xbtf, const std::string& outputFile) : m_xbtf(xbtf)
{
m_outputFile = outputFile;
m_file = m_tempFile = NULL;
}
bool CXBTFWriter::Create()
{
m_file = fopen(m_outputFile.c_str(), "wb");
if (m_file == NULL)
{
return false;
}
m_tempFile = fopen(TEMP_FILE, "wb");
if (m_tempFile == NULL)
{
return false;
}
return true;
}
bool CXBTFWriter::Close()
{
if (m_file == NULL || m_tempFile == NULL)
{
return false;
}
fclose(m_tempFile);
m_tempFile = fopen(TEMP_FILE, "rb");
if (m_tempFile == NULL)
{
return false;
}
unsigned char* tmp = new unsigned char[10*1024*1024];
size_t bytesRead;
while ((bytesRead = fread(tmp, 1, TEMP_SIZE, m_tempFile)) > 0)
{
fwrite(tmp, bytesRead, 1, m_file);
}
delete[] tmp;
fclose(m_file);
fclose(m_tempFile);
unlink(TEMP_FILE);
return true;
}
bool CXBTFWriter::AppendContent(unsigned char const* data, size_t length)
{
if (m_tempFile == NULL)
{
return false;
}
fwrite(data, length, 1, m_tempFile);
return true;
}
bool CXBTFWriter::UpdateHeader()
{
if (m_file == NULL)
{
return false;
}
uint64_t offset = m_xbtf.GetHeaderSize();
WRITE_STR(XBTF_MAGIC, 4, m_file);
WRITE_STR(XBTF_VERSION, 1, m_file);
std::vector<CXBTFFile>& files = m_xbtf.GetFiles();
WRITE_U32(files.size(), m_file);
for (size_t i = 0; i < files.size(); i++)
{
CXBTFFile& file = files[i];
// Convert path to lower case
char* ch = file.GetPath();
while (*ch)
{
*ch = tolower(*ch);
ch++;
}
WRITE_STR(file.GetPath(), 256, m_file);
WRITE_U32(file.GetLoop(), m_file);
std::vector<CXBTFFrame>& frames = file.GetFrames();
WRITE_U32(frames.size(), m_file);
for (size_t j = 0; j < frames.size(); j++)
{
CXBTFFrame& frame = frames[j];
frame.SetOffset(offset);
offset += frame.GetPackedSize();
WRITE_U32(frame.GetWidth(), m_file);
WRITE_U32(frame.GetHeight(), m_file);
WRITE_U32(frame.GetFormat(), m_file);
WRITE_U64(frame.GetPackedSize(), m_file);
WRITE_U64(frame.GetUnpackedSize(), m_file);
WRITE_U32(frame.GetDuration(), m_file);
WRITE_U64(frame.GetOffset(), m_file);
}
}
// Sanity check
int64_t pos = ftell(m_file);
if (pos != (int64_t)m_xbtf.GetHeaderSize())
{
printf("Expected header size (%" PRId64 ") != actual size (%" PRId64 ")\n", m_xbtf.GetHeaderSize(), pos);
return false;
}
return true;
}
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