bool MCStreamCache::Read(void *p_buffer, uint32_t p_offset, uint32_t p_length, uint32_t &r_read)
{
bool t_success = true;
uint32_t t_to_read;
t_to_read = 0;
uint32_t t_read;
t_read = 0;
if (p_offset < m_cache_length)
{
t_to_read = MCMin(m_cache_length - p_offset, p_length);
t_success = ReadFromCache(p_buffer, p_offset, t_to_read, t_read);
}
r_read = t_read;
if (t_success && t_read != t_to_read)
return true;
if (t_success)
{
t_to_read = p_length - t_read;
t_read = 0;
if (t_to_read > 0)
t_success = ReadFromStream((uint8_t*)p_buffer + r_read, t_to_read, t_read);
r_read += t_read;
}
return t_success;
}
Midi Midi::ReadFromFile(const wstring &filename)
{
#if defined WIN32
fstream file(reinterpret_cast<const wchar_t*>((filename).c_str()), ios::in|ios::binary);
#else
// TODO: This isn't Unicode!
// MACTODO: Test to see if opening a unicode filename works. I bet it doesn't.
std::string narrow(filename.begin(), filename.end());
fstream file(narrow.c_str(), ios::in | ios::binary);
#endif
if (!file.good()) throw MidiError(MidiError_BadFilename);
Midi m;
try
{
m = ReadFromStream(file);
}
catch (const MidiError &e)
{
// Close our file resource before handing the error up
file.close();
throw e;
}
return m;
}
EcsCsvStatus TcsNameMapper::ReadFromStream (std::wistream& inStrm)
{
EcsCsvStatus rtnStatus;
TcsCsvStatus csvStatus;
rtnStatus = ReadFromStream (inStrm,csvStatus);
return rtnStatus;
}
bool XMLNode::ReadFromFile(const std::string& file_name) {
std::ifstream in(file_name.c_str(), std::ios::in);
if (!in)
return false;
bool r = ReadFromStream(in);
in.close();
return r;
}
TreeList::TreeList(string filename) {
mParam = 0;
mSize = 0;
mTreeArray = 0;
ifstream is(filename.c_str());
ReadFromStream(is);
SetParameters();
}
//-----------------------------------------------------------------------------------
void AnimationMotion::ReadFromFile(const char* filename)
{
BinaryFileReader reader;
ASSERT_OR_DIE(reader.Open(filename), "File Open failed!");
{
ReadFromStream(reader);
}
reader.Close();
}
void CItemEnhancement::ReadFromStream (SLoadCtx &Ctx)
// ReadFromStream
//
// Reads an enhancement
{
ReadFromStream(Ctx.dwVersion, Ctx.pStream);
}
//
// Load
//
// Load all the data from the given stream
STDMETHODIMP CPersistStream::Load(LPSTREAM pStm)
{
HRESULT hr;
// Load the version number then the data
mPS_dwFileVersion = ReadInt(pStm, hr);
if (FAILED(hr)) {
return hr;
}
return ReadFromStream(pStm);
} // Load
Tree::Tree(string filename) {
mParam = 0;
Name = "T";
ifstream is(filename.c_str());
if (! is) {
cerr << "error : non existing file : " << filename << '\n';
exit(1);
}
ReadFromStream(is,1);
FinishCreation();
}
ALERROR CG16bitFont::CreateFromResource (HINSTANCE hInst, char *pszRes)
// CreateFromResource
//
// Loads the font from a resource
// Use DirectXFont to save a font to a file
{
ALERROR error;
HRSRC hRes;
HGLOBAL hGlobalRes;
void *pImage;
int iSize;
// Load the resource
hRes = ::FindResource(hInst, pszRes, "DXFN");
if (hRes == NULL)
return ERR_FAIL;
iSize = ::SizeofResource(hInst, hRes);
if (iSize == 0)
return ERR_FAIL;
hGlobalRes = ::LoadResource(hInst, hRes);
if (hGlobalRes == NULL)
return ERR_FAIL;
pImage = ::LockResource(hGlobalRes);
if (pImage == NULL)
return ERR_FAIL;
// Load
CMemoryReadStream Stream((char *)pImage, iSize);
if (error = Stream.Open())
return error;
if (error = ReadFromStream(&Stream))
return error;
Stream.Close();
return NOERROR;
}
nsresult nsRawReader::ReadMetadata(nsVideoInfo* aInfo)
{
NS_ASSERTION(mDecoder->OnDecodeThread(),
"Should be on decode thread.");
nsMediaStream* stream = mDecoder->GetCurrentStream();
NS_ASSERTION(stream, "Decoder has no media stream");
if (!ReadFromStream(stream, reinterpret_cast<PRUint8*>(&mMetadata),
sizeof(mMetadata)))
return NS_ERROR_FAILURE;
// Validate the header
if (!(mMetadata.headerPacketID == 0 /* Packet ID of 0 for the header*/ &&
mMetadata.codecID == RAW_ID /* "YUV" */ &&
mMetadata.majorVersion == 0 &&
mMetadata.minorVersion == 1))
return NS_ERROR_FAILURE;
PRUint32 dummy;
if (!MulOverflow32(mMetadata.frameWidth, mMetadata.frameHeight, dummy))
return NS_ERROR_FAILURE;
if (mMetadata.aspectDenominator == 0 ||
mMetadata.framerateDenominator == 0)
return NS_ERROR_FAILURE; // Invalid data
// Determine and verify frame display size.
float pixelAspectRatio = static_cast<float>(mMetadata.aspectNumerator) /
mMetadata.aspectDenominator;
nsIntSize display(mMetadata.frameWidth, mMetadata.frameHeight);
ScaleDisplayByAspectRatio(display, pixelAspectRatio);
mPicture = nsIntRect(0, 0, mMetadata.frameWidth, mMetadata.frameHeight);
nsIntSize frameSize(mMetadata.frameWidth, mMetadata.frameHeight);
if (!nsVideoInfo::ValidateVideoRegion(frameSize, mPicture, display)) {
// Video track's frame sizes will overflow. Fail.
return NS_ERROR_FAILURE;
}
mInfo.mHasVideo = true;
mInfo.mHasAudio = false;
mInfo.mDisplay = display;
mFrameRate = static_cast<float>(mMetadata.framerateNumerator) /
mMetadata.framerateDenominator;
// Make some sanity checks
if (mFrameRate > 45 ||
mFrameRate == 0 ||
pixelAspectRatio == 0 ||
mMetadata.frameWidth > 2000 ||
mMetadata.frameHeight > 2000 ||
mMetadata.chromaChannelBpp != 4 ||
mMetadata.lumaChannelBpp != 8 ||
mMetadata.colorspace != 1 /* 4:2:0 */)
return NS_ERROR_FAILURE;
mFrameSize = mMetadata.frameWidth * mMetadata.frameHeight *
(mMetadata.lumaChannelBpp + mMetadata.chromaChannelBpp) / 8.0 +
sizeof(nsRawPacketHeader);
PRInt64 length = stream->GetLength();
if (length != -1) {
mozilla::ReentrantMonitorAutoEnter autoMonitor(mDecoder->GetReentrantMonitor());
mDecoder->GetStateMachine()->SetDuration(USECS_PER_S *
(length - sizeof(nsRawVideoHeader)) /
(mFrameSize * mFrameRate));
}
*aInfo = mInfo;
return NS_OK;
}
bool nsRawReader::DecodeVideoFrame(bool &aKeyframeSkip,
PRInt64 aTimeThreshold)
{
NS_ASSERTION(mDecoder->OnDecodeThread(),
"Should be on decode thread.");
// Record number of frames decoded and parsed. Automatically update the
// stats counters using the AutoNotifyDecoded stack-based class.
PRUint32 parsed = 0, decoded = 0;
nsMediaDecoder::AutoNotifyDecoded autoNotify(mDecoder, parsed, decoded);
if (!mFrameSize)
return false; // Metadata read failed. We should refuse to play.
PRInt64 currentFrameTime = USECS_PER_S * mCurrentFrame / mFrameRate;
PRUint32 length = mFrameSize - sizeof(nsRawPacketHeader);
nsAutoArrayPtr<PRUint8> buffer(new PRUint8[length]);
nsMediaStream* stream = mDecoder->GetCurrentStream();
NS_ASSERTION(stream, "Decoder has no media stream");
// We're always decoding one frame when called
while(true) {
nsRawPacketHeader header;
// Read in a packet header and validate
if (!(ReadFromStream(stream, reinterpret_cast<PRUint8*>(&header),
sizeof(header))) ||
!(header.packetID == 0xFF && header.codecID == RAW_ID /* "YUV" */)) {
return false;
}
if (!ReadFromStream(stream, buffer, length)) {
return false;
}
parsed++;
if (currentFrameTime >= aTimeThreshold)
break;
mCurrentFrame++;
currentFrameTime += static_cast<double>(USECS_PER_S) / mFrameRate;
}
VideoData::YCbCrBuffer b;
b.mPlanes[0].mData = buffer;
b.mPlanes[0].mStride = mMetadata.frameWidth * mMetadata.lumaChannelBpp / 8.0;
b.mPlanes[0].mHeight = mMetadata.frameHeight;
b.mPlanes[0].mWidth = mMetadata.frameWidth;
PRUint32 cbcrStride = mMetadata.frameWidth * mMetadata.chromaChannelBpp / 8.0;
b.mPlanes[1].mData = buffer + mMetadata.frameHeight * b.mPlanes[0].mStride;
b.mPlanes[1].mStride = cbcrStride;
b.mPlanes[1].mHeight = mMetadata.frameHeight / 2;
b.mPlanes[1].mWidth = mMetadata.frameWidth / 2;
b.mPlanes[2].mData = b.mPlanes[1].mData + mMetadata.frameHeight * cbcrStride / 2;
b.mPlanes[2].mStride = cbcrStride;
b.mPlanes[2].mHeight = mMetadata.frameHeight / 2;
b.mPlanes[2].mWidth = mMetadata.frameWidth / 2;
VideoData *v = VideoData::Create(mInfo,
mDecoder->GetImageContainer(),
-1,
currentFrameTime,
currentFrameTime + (USECS_PER_S / mFrameRate),
b,
1, // In raw video every frame is a keyframe
-1,
mPicture);
if (!v)
return false;
mVideoQueue.Push(v);
mCurrentFrame++;
decoded++;
currentFrameTime += USECS_PER_S / mFrameRate;
return true;
}
nsresult nsRawReader::ReadMetadata(nsVideoInfo* aInfo)
{
NS_ASSERTION(mDecoder->OnStateMachineThread(),
"Should be on state machine thread.");
mozilla::MonitorAutoEnter autoEnter(mMonitor);
nsMediaStream* stream = mDecoder->GetCurrentStream();
NS_ASSERTION(stream, "Decoder has no media stream");
if (!ReadFromStream(stream, reinterpret_cast<PRUint8*>(&mMetadata),
sizeof(mMetadata)))
return NS_ERROR_FAILURE;
// Validate the header
if (!(mMetadata.headerPacketID == 0 /* Packet ID of 0 for the header*/ &&
mMetadata.codecID == RAW_ID /* "YUV" */ &&
mMetadata.majorVersion == 0 &&
mMetadata.minorVersion == 1))
return NS_ERROR_FAILURE;
PRUint32 dummy;
if (!MulOverflow32(mMetadata.frameWidth, mMetadata.frameHeight, dummy))
return NS_ERROR_FAILURE;
mInfo.mHasVideo = PR_TRUE;
mInfo.mPicture.x = 0;
mInfo.mPicture.y = 0;
mInfo.mPicture.width = mMetadata.frameWidth;
mInfo.mPicture.height = mMetadata.frameHeight;
mInfo.mFrame.width = mMetadata.frameWidth;
mInfo.mFrame.height = mMetadata.frameHeight;
if (mMetadata.aspectDenominator == 0 ||
mMetadata.framerateDenominator == 0)
return NS_ERROR_FAILURE; // Invalid data
mInfo.mPixelAspectRatio = static_cast<float>(mMetadata.aspectNumerator) /
mMetadata.aspectDenominator;
mInfo.mHasAudio = PR_FALSE;
mFrameRate = static_cast<float>(mMetadata.framerateNumerator) /
mMetadata.framerateDenominator;
// Make some sanity checks
if (mFrameRate > 45 ||
mFrameRate == 0 ||
mInfo.mPixelAspectRatio == 0 ||
mMetadata.frameWidth > 2000 ||
mMetadata.frameHeight > 2000 ||
mMetadata.chromaChannelBpp != 4 ||
mMetadata.lumaChannelBpp != 8 ||
mMetadata.colorspace != 1 /* 4:2:0 */)
return NS_ERROR_FAILURE;
mFrameSize = mMetadata.frameWidth * mMetadata.frameHeight *
(mMetadata.lumaChannelBpp + mMetadata.chromaChannelBpp) / 8.0 +
sizeof(nsRawPacketHeader);
PRInt64 length = stream->GetLength();
if (length != -1) {
mozilla::MonitorAutoExit autoExitMonitor(mMonitor);
mozilla::MonitorAutoEnter autoMonitor(mDecoder->GetMonitor());
mDecoder->GetStateMachine()->SetDuration(USECS_PER_S *
(length - sizeof(nsRawVideoHeader)) /
(mFrameSize * mFrameRate));
}
*aInfo = mInfo;
return NS_OK;
}
VError VValue::ReadRawFromStream( VStream* ioStream, sLONG inParam) //used by db4d server to read data without interpretation (for example : pictures)
{
return ReadFromStream(ioStream, inParam);
}
Midi Midi::ReadFromStream(istream &stream)
{
Midi m;
// header_id is always "MThd" by definition
const static string MidiFileHeader = "MThd";
const static string RiffFileHeader = "RIFF";
// I could use (MidiFileHeader.length() + 1), but then this has to be
// dynamically allocated. More hassle than it's worth. MIDI is well
// defined and will always have a 4-byte header. We use 5 so we get
// free null termination.
char header_id[5] = { 0, 0, 0, 0, 0 };
unsigned long header_length;
unsigned short format;
unsigned short track_count;
unsigned short time_division;
stream.read(header_id, static_cast<streamsize>(MidiFileHeader.length()));
string header(header_id);
if (header != MidiFileHeader)
{
if (header != RiffFileHeader) throw MidiError(MidiError_UnknownHeaderType);
else
{
// We know how to support RIFF files
unsigned long throw_away;
stream.read(reinterpret_cast<char*>(&throw_away), sizeof(unsigned long)); // RIFF length
stream.read(reinterpret_cast<char*>(&throw_away), sizeof(unsigned long)); // "RMID"
stream.read(reinterpret_cast<char*>(&throw_away), sizeof(unsigned long)); // "data"
stream.read(reinterpret_cast<char*>(&throw_away), sizeof(unsigned long)); // data size
// Call this recursively, without the RIFF header this time
return ReadFromStream(stream);
}
}
stream.read(reinterpret_cast<char*>(&header_length), sizeof(unsigned long));
stream.read(reinterpret_cast<char*>(&format), sizeof(unsigned short));
stream.read(reinterpret_cast<char*>(&track_count), sizeof(unsigned short));
stream.read(reinterpret_cast<char*>(&time_division), sizeof(unsigned short));
if (stream.fail()) throw MidiError(MidiError_NoHeader);
// Chunk Size is always 6 by definition
const static unsigned int MidiFileHeaderChunkLength = 6;
header_length = BigToSystem32(header_length);
if (header_length != MidiFileHeaderChunkLength)
{
throw MidiError(MidiError_BadHeaderSize);
}
enum MidiFormat { MidiFormat0 = 0, MidiFormat1, MidiFormat2 };
format = BigToSystem16(format);
if (format == MidiFormat2)
{
// MIDI 0: All information in 1 track
// MIDI 1: Multiple tracks intended to be played simultaneously
// MIDI 2: Multiple tracks intended to be played separately
//
// We do not support MIDI 2 at this time
throw MidiError(MidiError_Type2MidiNotSupported);
}
track_count = BigToSystem16(track_count);
if (format == 0 && track_count != 1)
{
// MIDI 0 has only 1 track by definition
throw MidiError(MidiError_BadType0Midi);
}
// Time division can be encoded two ways based on a bit-flag:
// - pulses per quarter note (15-bits)
// - SMTPE frames per second (7-bits for SMPTE frame count and 8-bits for clock ticks per frame)
time_division = BigToSystem16(time_division);
bool in_smpte = ((time_division & 0x8000) != 0);
if (in_smpte)
{
throw MidiError(MidiError_SMTPETimingNotImplemented);
}
// We ignore the possibility of SMPTE timing, so we can
// use the time division value directly as PPQN.
unsigned short pulses_per_quarter_note = time_division;
// Read in our tracks
for (int i = 0; i < track_count; ++i)
{
m.m_tracks.push_back(MidiTrack::ReadFromStream(stream));
}
m.BuildTempoTrack();
// Tell our tracks their IDs
for (int i = 0; i < track_count; ++i)
{
m.m_tracks[i].SetTrackId(i);
}
// Translate each track's list of notes and list
// of events into microseconds.
for (MidiTrackList::iterator i = m.m_tracks.begin(); i != m.m_tracks.end(); ++i)
{
i->Reset();
m.TranslateNotes(i->Notes(), pulses_per_quarter_note);
MidiEventMicrosecondList event_usecs;
for (MidiEventPulsesList::const_iterator j = i->EventPulses().begin(); j != i->EventPulses().end(); ++j)
{
event_usecs.push_back(m.GetEventPulseInMicroseconds(*j, pulses_per_quarter_note));
}
i->SetEventUsecs(event_usecs);
}
m.m_initialized = true;
// Just grab the end of the last note to find out how long the song is
m.m_microsecond_base_song_length = m.m_translated_notes.rbegin()->end;
// Eat everything up until *just* before the first note event
m.m_microsecond_dead_start_air = m.GetEventPulseInMicroseconds(m.FindFirstNotePulse(), pulses_per_quarter_note) - 1;
return m;
}
