/*
- Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of libdcp.
files in the program, then also delete it here.
*/
+
/** @file src/mono_picture_frame.cc
- * @brief MonoPictureFrame class.
+ * @brief MonoPictureFrame class
*/
-#include "mono_picture_frame.h"
-#include "exceptions.h"
-#include "util.h"
-#include "rgb_xyz.h"
+
#include "colour_conversion.h"
#include "compose.hpp"
-#include "j2k.h"
#include "crypto_context.h"
+#include "exceptions.h"
+#include "file.h"
+#include "filesystem.h"
+#include "j2k_transcode.h"
+#include "mono_picture_frame.h"
+#include "rgb_xyz.h"
+#include "util.h"
#include <asdcp/KM_fileio.h>
#include <asdcp/AS_DCP.h>
+
+using std::make_shared;
using std::string;
using std::shared_ptr;
using boost::optional;
using namespace dcp;
-/** Make a picture frame from a JPEG2000 file.
- * @param path Path to JPEG2000 file.
- */
+
MonoPictureFrame::MonoPictureFrame (boost::filesystem::path path)
{
- boost::uintmax_t const size = boost::filesystem::file_size (path);
+ auto const size = filesystem::file_size(path);
_buffer.reset(new ASDCP::JP2K::FrameBuffer(size));
- FILE* f = fopen_boost (path, "rb");
+ File f(path, "rb");
if (!f) {
- boost::throw_exception (FileError ("could not open JPEG2000 file", path, errno));
+ boost::throw_exception (FileError("could not open JPEG2000 file", path, errno));
}
- size_t n = fread (data(), 1, size, f);
- if (n != size) {
- boost::throw_exception (FileError ("could not read from JPEG2000 file", path, errno));
+ if (f.read(data(), 1, size) != size) {
+ boost::throw_exception (FileError("could not read from JPEG2000 file", path, errno));
}
- fclose (f);
-
_buffer->Size (size);
}
+
/** Make a picture frame from a 2D (monoscopic) asset.
* @param reader Reader for the asset's MXF file.
* @param n Frame within the asset, not taking EntryPoint into account.
* @param c Context for decryption, or 0.
+ * @param check_hmac true to check the HMAC and give an error if it is not as expected.
*/
-MonoPictureFrame::MonoPictureFrame (ASDCP::JP2K::MXFReader* reader, int n, shared_ptr<DecryptionContext> c)
+MonoPictureFrame::MonoPictureFrame (ASDCP::JP2K::MXFReader* reader, int n, shared_ptr<DecryptionContext> c, bool check_hmac)
{
/* XXX: unfortunate guesswork on this buffer size */
- _buffer.reset(new ASDCP::JP2K::FrameBuffer(4 * Kumu::Megabyte));
+ _buffer = make_shared<ASDCP::JP2K::FrameBuffer>(4 * Kumu::Megabyte);
- ASDCP::Result_t const r = reader->ReadFrame (n, *_buffer, c->context(), c->hmac());
+ auto const r = reader->ReadFrame (n, *_buffer, c->context(), check_hmac ? c->hmac() : nullptr);
- if (ASDCP_FAILURE (r)) {
- boost::throw_exception (ReadError (String::compose ("could not read video frame %1 (%2)", n, static_cast<int>(r))));
+ if (ASDCP_FAILURE(r)) {
+ boost::throw_exception (ReadError(String::compose ("could not read video frame %1 (%2)", n, static_cast<int>(r))));
}
}
+
MonoPictureFrame::MonoPictureFrame (uint8_t const * data, int size)
{
- _buffer.reset(new ASDCP::JP2K::FrameBuffer(size));
+ _buffer = make_shared<ASDCP::JP2K::FrameBuffer>(size);
_buffer->Size (size);
memcpy (_buffer->Data(), data, size);
}
-/** @return Pointer to JPEG2000 data */
uint8_t const *
MonoPictureFrame::data () const
{
return _buffer->RoData ();
}
-/** @return Pointer to JPEG2000 data */
+
uint8_t *
MonoPictureFrame::data ()
{
return _buffer->Data ();
}
-/** @return Size of JPEG2000 data in bytes */
+
int
MonoPictureFrame::size () const
{
return _buffer->Size ();
}
-/** @param reduce a factor by which to reduce the resolution
- * of the image, expressed as a power of two (pass 0 for no
- * reduction).
- */
+
shared_ptr<OpenJPEGImage>
MonoPictureFrame::xyz_image (int reduce) const
{
- return decompress_j2k (const_cast<uint8_t*> (_buffer->RoData()), _buffer->Size(), reduce);
+ return decompress_j2k (const_cast<uint8_t*>(_buffer->RoData()), _buffer->Size(), reduce);
}