/*
- Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
*/
+
/** @file src/dcp_video_frame.cc
* @brief A single frame of video destined for a DCP.
*
* of images that require encoding.
*/
-#include "dcp_video.h"
+
+#include "compose.hpp"
#include "config.h"
-#include "exceptions.h"
-#include "encode_server_description.h"
+#include "cross.h"
+#include "dcp_video.h"
+#include "dcpomatic_log.h"
#include "dcpomatic_socket.h"
+#include "encode_server_description.h"
+#include "exceptions.h"
#include "image.h"
#include "log.h"
-#include "dcpomatic_log.h"
-#include "cross.h"
#include "player_video.h"
-#include "compose.hpp"
-#include "warnings.h"
+#include "rng.h"
#include <libcxml/cxml.h>
#include <dcp/raw_convert.h>
#include <dcp/openjpeg_image.h>
#include <dcp/rgb_xyz.h>
-#include <dcp/j2k.h>
-DCPOMATIC_DISABLE_WARNINGS
+#include <dcp/j2k_transcode.h>
+#include <dcp/warnings.h>
+LIBDCP_DISABLE_WARNINGS
#include <libxml++/libxml++.h>
-DCPOMATIC_ENABLE_WARNINGS
+LIBDCP_ENABLE_WARNINGS
#include <boost/asio.hpp>
#include <boost/thread.hpp>
#include <stdint.h>
#include "i18n.h"
+
using std::cout;
using std::make_shared;
using std::shared_ptr;
using std::string;
-using dcp::Size;
using dcp::ArrayData;
using dcp::raw_convert;
#if BOOST_VERSION >= 106100
using namespace boost::placeholders;
#endif
-#define DCI_COEFFICENT (48.0 / 52.37)
/** Construct a DCP video frame.
* @param frame Input frame.
{
shared_ptr<dcp::OpenJPEGImage> xyz;
- auto image = frame->image (bind(&PlayerVideo::keep_xyz_or_rgb, _1), VideoRange::FULL, true, false);
+ auto image = frame->image (bind(&PlayerVideo::keep_xyz_or_rgb, _1), VideoRange::FULL, false);
if (frame->colour_conversion()) {
xyz = dcp::rgb_to_xyz (
image->data()[0],
* @return Encoded data.
*/
ArrayData
-DCPVideo::encode_locally ()
+DCPVideo::encode_locally () const
{
auto const comment = Config::instance()->dcp_j2k_comment();
- auto enc = dcp::compress_j2k (
- convert_to_xyz (_frame, boost::bind(&Log::dcp_log, dcpomatic_log.get(), _1, _2)),
- _j2k_bandwidth,
- _frames_per_second,
- _frame->eyes() == Eyes::LEFT || _frame->eyes() == Eyes::RIGHT,
- _resolution == Resolution::FOUR_K,
- comment.empty() ? "libdcp" : comment
+ ArrayData enc = {};
+ /* This was empirically derived by a user: see #1902 */
+ int const minimum_size = 16384;
+ LOG_DEBUG_ENCODE("Using minimum frame size %1", minimum_size);
+
+ auto xyz = convert_to_xyz (_frame, boost::bind(&Log::dcp_log, dcpomatic_log.get(), _1, _2));
+ int noise_amount = 2;
+ int pixel_skip = 16;
+ while (true) {
+ enc = dcp::compress_j2k (
+ xyz,
+ _j2k_bandwidth,
+ _frames_per_second,
+ _frame->eyes() == Eyes::LEFT || _frame->eyes() == Eyes::RIGHT,
+ _resolution == Resolution::FOUR_K,
+ comment.empty() ? "libdcp" : comment
);
+ if (enc.size() >= minimum_size) {
+ LOG_DEBUG_ENCODE(N_("Frame %1 encoded size was OK (%2)"), _index, enc.size());
+ break;
+ }
+
+ LOG_GENERAL (N_("Frame %1 encoded size was small (%2); adding noise at level %3 with pixel skip %4"), _index, enc.size(), noise_amount, pixel_skip);
+
+ /* The JPEG2000 is too low-bitrate for some decoders <cough>DSS200</cough> so add some noise
+ * and try again. This is slow but hopefully won't happen too often. We have to do
+ * convert_to_xyz() again because compress_j2k() corrupts its xyz parameter.
+ */
+
+ xyz = convert_to_xyz (_frame, boost::bind(&Log::dcp_log, dcpomatic_log.get(), _1, _2));
+ auto size = xyz->size ();
+ auto pixels = size.width * size.height;
+ dcpomatic::RNG rng(42);
+ for (auto c = 0; c < 3; ++c) {
+ auto p = xyz->data(c);
+ auto e = xyz->data(c) + pixels;
+ while (p < e) {
+ *p = std::min(4095, std::max(0, *p + (rng.get() % noise_amount)));
+ p += pixel_skip;
+ }
+ }
+
+ if (pixel_skip > 1) {
+ --pixel_skip;
+ } else {
+ ++noise_amount;
+ }
+ /* Something's gone badly wrong if this much noise doesn't help */
+ DCPOMATIC_ASSERT (noise_amount < 16);
+ }
+
switch (_frame->eyes()) {
case Eyes::BOTH:
LOG_DEBUG_ENCODE (N_("Finished locally-encoded frame %1 for mono"), _index);
* @return Encoded data.
*/
ArrayData
-DCPVideo::encode_remotely (EncodeServerDescription serv, int timeout)
+DCPVideo::encode_remotely (EncodeServerDescription serv, int timeout) const
{
boost::asio::io_service io_service;
boost::asio::ip::tcp::resolver resolver (io_service);
boost::asio::ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve (query);
auto socket = make_shared<Socket>(timeout);
+ socket->set_send_buffer_size (512 * 1024);
socket->connect (*endpoint_iterator);
/* Send XML metadata */
auto xml = doc.write_to_string ("UTF-8");
- socket->write (xml.length() + 1);
- socket->write ((uint8_t *) xml.c_str(), xml.length() + 1);
+ socket->write(xml.bytes() + 1);
+ socket->write ((uint8_t *) xml.c_str(), xml.bytes() + 1);
/* Send binary data */
LOG_TIMING("start-remote-send thread=%1", thread_id ());
projects / dcpomatic.git / blobdiff