inline std::string BufferedFileReader::readString()
{
if (m_bEOF) throw EndOfStreamException("");
std::string::size_type len;
m_file.read(reinterpret_cast<char*>(&len), sizeof(std::string::size_type));
if (! m_file.good())
{
m_bEOF = true;
throw EndOfStreamException("");
}
std::string::value_type* buf = new std::string::value_type[len];
m_file.read(reinterpret_cast<char*>(buf), len * sizeof(std::string::value_type));
if (! m_file.good())
{
delete[] buf;
m_bEOF = true;
throw EndOfStreamException("");
}
std::string ret(buf, len);
delete[] buf;
return ret;
}
inline void BufferedFileReader::readBytes(uint32_t u32Len, byte** pData)
{
if (m_bEOF) throw EndOfStreamException("");
*pData = new byte[u32Len];
m_file.read(reinterpret_cast<char*>(*pData), u32Len);
if (! m_file.good())
{
delete[] *pData;
m_bEOF = true;
throw EndOfStreamException("");
}
}
inline bool BufferedFileReader::readBoolean()
{
if (m_bEOF) throw EndOfStreamException("");
bool ret;
m_file.read(reinterpret_cast<char*>(&ret), sizeof(bool));
if (! m_file.good())
{
m_bEOF = true;
throw EndOfStreamException("");
}
return ret;
}
inline float BufferedFileReader::readFloat()
{
if (m_bEOF) throw EndOfStreamException("");
float ret;
m_file.read(reinterpret_cast<char*>(&ret), sizeof(float));
if (! m_file.good())
{
m_bEOF = true;
throw EndOfStreamException("");
}
return ret;
}
inline uint64_t BufferedFileReader::readUInt64()
{
if (m_bEOF) throw EndOfStreamException("");
uint64_t ret;
m_file.read(reinterpret_cast<char*>(&ret), sizeof(uint64_t));
if (! m_file.good())
{
m_bEOF = true;
throw EndOfStreamException("");
}
return ret;
}
void IWORKMemoryStream::read(const RVNGInputStreamPtr_t &input, const unsigned length)
{
if (0 == length)
return;
if (!bool(input))
throw EndOfStreamException();
unsigned long readBytes = 0;
const unsigned char *const data = input->read(length, readBytes);
if (length != readBytes)
throw EndOfStreamException();
m_length = (long) length;
assign(data, length);
}
inline double BufferedFileReader::readDouble()
{
if (m_bEOF) throw EndOfStreamException("");
if (! m_file.good ())
{
m_bEOF = true;
throw EndOfStreamException ("");
}
double ret;
m_file.read(reinterpret_cast<char*>(&ret), sizeof(double));
if (! m_file.good())
{
m_bEOF = true;
throw EndOfStreamException("");
}
return ret;
}
void syncPts() throw(EndOfStreamException)
{
if (!hasPacket())
throw EndOfStreamException();
sampleBufferSize = 0;
if (packet.pts != AV_NOPTS_VALUE)
sampleBufferStart = uint64_t(floor(ptsToTime(packet.pts) * pCodecCtx->sample_rate));
if (sampleBufferStart > streamSize)
streamSize = sampleBufferStart;
}
uint8_t readU8(const RVNGInputStreamPtr &input, bool /* bigEndian */)
{
checkStream(input);
unsigned long numBytesRead;
uint8_t const *p = input->read(sizeof(uint8_t), numBytesRead);
if (p && numBytesRead == sizeof(uint8_t))
return *(uint8_t const *)(p);
throw EndOfStreamException();
}
const unsigned char *readNBytes(const RVNGInputStreamPtr &input, const unsigned long numBytes)
{
checkStream(input);
unsigned long readBytes = 0;
const unsigned char *const s = input->read(numBytes, readBytes);
if (numBytes != readBytes)
throw EndOfStreamException();
return s;
}
uint64_t readU64(const RVNGInputStreamPtr &input, bool bigEndian)
{
checkStream(input);
unsigned long numBytesRead;
uint8_t const *p = input->read(sizeof(uint64_t), numBytesRead);
if (p && numBytesRead == sizeof(uint64_t))
{
if (bigEndian)
return (uint64_t)p[7]|((uint64_t)p[6]<<8)|((uint64_t)p[5]<<16)|((uint64_t)p[4]<<24)|((uint64_t)p[3]<<32)|((uint64_t)p[2]<<40)|((uint64_t)p[1]<<48)|((uint64_t)p[0]<<56);
return (uint64_t)p[0]|((uint64_t)p[1]<<8)|((uint64_t)p[2]<<16)|((uint64_t)p[3]<<24)|((uint64_t)p[4]<<32)|((uint64_t)p[5]<<40)|((uint64_t)p[6]<<48)|((uint64_t)p[7]<<56);
}
throw EndOfStreamException();
}
uint16_t readU16(const RVNGInputStreamPtr &input, bool bigEndian)
{
checkStream(input);
unsigned long numBytesRead;
uint8_t const *p = input->read(sizeof(uint16_t), numBytesRead);
if (p && numBytesRead == sizeof(uint16_t))
{
if (bigEndian)
return static_cast<uint16_t>((uint16_t)p[1]|((uint16_t)p[0]<<8));
return static_cast<uint16_t>((uint16_t)p[0]|((uint16_t)p[1]<<8));
}
throw EndOfStreamException();
}
void readPacket() throw(EndOfStreamException)
{
// Read the next packet, skipping all packets that aren't for this stream
#if (LIBAVCODEC_VERSION_MAJOR >= 53)
packet.size = packetBufferSize;
packet.data = packetBuffer;
#endif
do {
// Free old packet
if (packet.data != NULL)
av_free_packet( &packet );
// Read new packet
if(av_read_frame(pFormatCtx, &packet) < 0)
throw EndOfStreamException();
} while(packet.stream_index != streamIndex);
packetBufferSize = packet.size;
packetBuffer = packet.data;
if (packet.pts != AV_NOPTS_VALUE)
sampleBufferStart = uint64_t(floor(ptsToTime(packet.pts) * pCodecCtx->sample_rate));
}
