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/*
Copyright (C) 2012-2013 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "AS_DCP.h"
#include "KM_fileio.h"
#include "picture_asset_writer.h"
#include "exceptions.h"
#include "picture_asset.h"
using std::istream;
using std::ostream;
using std::string;
using boost::shared_ptr;
using namespace libdcp;
FrameInfo::FrameInfo (istream& s)
{
s >> offset >> size >> hash;
}
void
FrameInfo::write (ostream& s)
{
s << offset << " " << size << " " << hash;
}
PictureAssetWriter::PictureAssetWriter (bool overwrite, MXFMetadata const & metadata)
: _frames_written (0)
, _started (false)
, _finalized (false)
, _overwrite (overwrite)
, _metadata (metadata)
{
}
struct MonoPictureAssetWriter::ASDCPState
{
ASDCPState()
: frame_buffer (4 * Kumu::Megabyte)
{}
ASDCP::JP2K::CodestreamParser j2k_parser;
ASDCP::JP2K::FrameBuffer frame_buffer;
ASDCP::JP2K::MXFWriter mxf_writer;
ASDCP::WriterInfo writer_info;
ASDCP::JP2K::PictureDescriptor picture_descriptor;
};
struct StereoPictureAssetWriter::ASDCPState
{
ASDCPState()
: frame_buffer (4 * Kumu::Megabyte)
{}
ASDCP::JP2K::CodestreamParser j2k_parser;
ASDCP::JP2K::FrameBuffer frame_buffer;
ASDCP::JP2K::MXFSWriter mxf_writer;
ASDCP::WriterInfo writer_info;
ASDCP::JP2K::PictureDescriptor picture_descriptor;
};
/** @param a Asset to write to. `a' must not be deleted while
* this writer class still exists, or bad things will happen.
*/
MonoPictureAssetWriter::MonoPictureAssetWriter (MonoPictureAsset* asset, bool overwrite, MXFMetadata const & metadata)
: PictureAssetWriter (overwrite, metadata)
, _state (new MonoPictureAssetWriter::ASDCPState)
, _asset (asset)
{
}
StereoPictureAssetWriter::StereoPictureAssetWriter (StereoPictureAsset* asset, bool overwrite, MXFMetadata const & metadata)
: PictureAssetWriter (overwrite, metadata)
, _state (new StereoPictureAssetWriter::ASDCPState)
, _asset (asset)
{
}
template <class P, class Q>
void libdcp::start (PictureAssetWriter* writer, shared_ptr<P> state, Q* asset, uint8_t* data, int size)
{
if (ASDCP_FAILURE (state->j2k_parser.OpenReadFrame (data, size, state->frame_buffer))) {
boost::throw_exception (MiscError ("could not parse J2K frame"));
}
state->j2k_parser.FillPictureDescriptor (state->picture_descriptor);
state->picture_descriptor.EditRate = ASDCP::Rational (asset->edit_rate(), 1);
asset->fill_writer_info (&state->writer_info, asset->uuid(), writer->_metadata);
if (ASDCP_FAILURE (state->mxf_writer.OpenWrite (
asset->path().string().c_str(),
state->writer_info,
state->picture_descriptor,
16384,
writer->_overwrite)
)) {
boost::throw_exception (MXFFileError ("could not open MXF file for writing", asset->path().string()));
}
writer->_started = true;
}
void
MonoPictureAssetWriter::start (uint8_t* data, int size)
{
libdcp::start (this, _state, _asset, data, size);
}
void
StereoPictureAssetWriter::start (uint8_t* data, int size)
{
libdcp::start (this, _state, _asset, data, size);
}
FrameInfo
MonoPictureAssetWriter::write (uint8_t* data, int size)
{
assert (!_finalized);
if (!_started) {
start (data, size);
}
if (ASDCP_FAILURE (_state->j2k_parser.OpenReadFrame (data, size, _state->frame_buffer))) {
boost::throw_exception (MiscError ("could not parse J2K frame"));
}
uint64_t const before_offset = _state->mxf_writer.Tell ();
string hash;
if (ASDCP_FAILURE (_state->mxf_writer.WriteFrame (_state->frame_buffer, 0, 0, &hash))) {
boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
}
++_frames_written;
return FrameInfo (before_offset, _state->mxf_writer.Tell() - before_offset, hash);
}
FrameInfo
StereoPictureAssetWriter::write (uint8_t* data, int size, Eye eye)
{
assert (!_finalized);
if (!_started) {
start (data, size);
}
if (ASDCP_FAILURE (_state->j2k_parser.OpenReadFrame (data, size, _state->frame_buffer))) {
boost::throw_exception (MiscError ("could not parse J2K frame"));
}
uint64_t const before_offset = _state->mxf_writer.Tell ();
string hash;
if (ASDCP_FAILURE (_state->mxf_writer.WriteFrame (
_state->frame_buffer,
(eye == EYE_LEFT) ? ASDCP::JP2K::SP_LEFT : ASDCP::JP2K::SP_RIGHT,
0, 0, &hash)
)) {
boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
}
++_frames_written;
return FrameInfo (before_offset, _state->mxf_writer.Tell() - before_offset, hash);
}
void
MonoPictureAssetWriter::fake_write (int size)
{
assert (_started);
assert (!_finalized);
if (ASDCP_FAILURE (_state->mxf_writer.FakeWriteFrame (size))) {
boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
}
++_frames_written;
}
void
StereoPictureAssetWriter::fake_write (int size)
{
assert (_started);
assert (!_finalized);
if (ASDCP_FAILURE (_state->mxf_writer.FakeWriteFrame (size))) {
boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
}
++_frames_written;
}
void
MonoPictureAssetWriter::finalize ()
{
assert (!_finalized);
if (ASDCP_FAILURE (_state->mxf_writer.Finalize())) {
boost::throw_exception (MXFFileError ("error in finalizing video MXF", _asset->path().string()));
}
_finalized = true;
_asset->set_intrinsic_duration (_frames_written);
_asset->set_duration (_frames_written);
}
void
StereoPictureAssetWriter::finalize ()
{
assert (!_finalized);
if (ASDCP_FAILURE (_state->mxf_writer.Finalize())) {
boost::throw_exception (MXFFileError ("error in finalizing video MXF", _asset->path().string()));
}
_finalized = true;
_asset->set_intrinsic_duration (_frames_written);
_asset->set_duration (_frames_written);
}
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