#include <iomanip>
#include <iostream>
#include <fstream>
+#include <climits>
#ifdef DVDOMATIC_POSIX
#include <execinfo.h>
#include <cxxabi.h>
#include "dcp_content_type.h"
#include "filter.h"
#include "sound_processor.h"
+#include "config.h"
using namespace std;
using namespace boost;
+using libdcp::Size;
thread::id ui_thread;
void
dvdomatic_setup ()
{
+ avfilter_register_all ();
+
Format::setup_formats ();
DCPContentType::setup_dcp_content_types ();
Scaler::setup_scalers ();
return s.str ();
}
-/** @param fps Arbitrary frames-per-second value.
- * @return DCPFrameRate for this frames-per-second.
- */
-DCPFrameRate
-dcp_frame_rate (float fps)
+static bool
+about_equal (float a, float b)
+{
+ /* A film of F seconds at f FPS will be Ff frames;
+ Consider some delta FPS d, so if we run the same
+ film at (f + d) FPS it will last F(f + d) seconds.
+
+ Hence the difference in length over the length of the film will
+ be F(f + d) - Ff frames
+ = Ff + Fd - Ff frames
+ = Fd frames
+ = Fd/f seconds
+
+ So if we accept a difference of 1 frame, ie 1/f seconds, we can
+ say that
+
+ 1/f = Fd/f
+ ie 1 = Fd
+ ie d = 1/F
+
+ So for a 3hr film, ie F = 3 * 60 * 60 = 10800, the acceptable
+ FPS error is 1/F ~= 0.0001 ~= 10-e4
+ */
+
+ return (fabs (a - b) < 1e-4);
+}
+
+class FrameRateCandidate
+{
+public:
+ FrameRateCandidate (float source_, int dcp_)
+ : source (source_)
+ , dcp (dcp_)
+ {}
+
+ bool skip () const {
+ return !about_equal (source, dcp) && source > dcp;
+ }
+
+ bool repeat () const {
+ return !about_equal (source, dcp) && source < dcp;
+ }
+
+ float source;
+ int dcp;
+};
+
+/** @param fps Arbitrary source frames-per-second value */
+/** XXX: this could be slow-ish */
+DCPFrameRate::DCPFrameRate (float source_fps)
{
- DCPFrameRate dfr;
+ list<int> const allowed_dcp_frame_rates = Config::instance()->allowed_dcp_frame_rates ();
- dfr.run_fast = (fps != rint (fps));
- dfr.frames_per_second = rint (fps);
- dfr.skip = 1;
+ /* Work out what rates we could manage, including those achieved by using skip / repeat. */
+ list<FrameRateCandidate> candidates;
- /* XXX: somewhat arbitrary */
- if (fps == 50) {
- dfr.frames_per_second = 25;
- dfr.skip = 2;
+ /* Start with the ones without skip / repeat so they will get matched in preference to skipped/repeated ones */
+ for (list<int>::const_iterator i = allowed_dcp_frame_rates.begin(); i != allowed_dcp_frame_rates.end(); ++i) {
+ candidates.push_back (FrameRateCandidate (*i, *i));
}
- return dfr;
+ /* Then the skip/repeat ones */
+ for (list<int>::const_iterator i = allowed_dcp_frame_rates.begin(); i != allowed_dcp_frame_rates.end(); ++i) {
+ candidates.push_back (FrameRateCandidate (float (*i) / 2, *i));
+ candidates.push_back (FrameRateCandidate (float (*i) * 2, *i));
+ }
+
+ /* Pick the best one, bailing early if we hit an exact match */
+ float error = numeric_limits<float>::max ();
+ boost::optional<FrameRateCandidate> best;
+ list<FrameRateCandidate>::iterator i = candidates.begin();
+ while (i != candidates.end()) {
+
+ if (about_equal (i->source, source_fps)) {
+ best = *i;
+ break;
+ }
+
+ float const e = fabs (i->source - source_fps);
+ if (e < error) {
+ error = e;
+ best = *i;
+ }
+
+ ++i;
+ }
+
+ if (!best) {
+ throw EncodeError ("cannot find a suitable DCP frame rate for this source");
+ }
+
+ frames_per_second = best->dcp;
+ skip = best->skip ();
+ repeat = best->repeat ();
+ change_speed = !about_equal (source_fps * factor(), frames_per_second);
}
/** @param An arbitrary sampling rate.
return "";
}
-Socket::Socket ()
+Socket::Socket (int timeout)
: _deadline (_io_service)
, _socket (_io_service)
- , _buffer_data (0)
+ , _timeout (timeout)
{
_deadline.expires_at (posix_time::pos_infin);
check ();
_deadline.async_wait (boost::bind (&Socket::check, this));
}
-/** Blocking connect with timeout.
+/** Blocking connect.
* @param endpoint End-point to connect to.
- * @param timeout Time-out in seconds.
*/
void
-Socket::connect (asio::ip::basic_resolver_entry<asio::ip::tcp> const & endpoint, int timeout)
+Socket::connect (asio::ip::basic_resolver_entry<asio::ip::tcp> const & endpoint)
{
- _deadline.expires_from_now (posix_time::seconds (timeout));
+ _deadline.expires_from_now (posix_time::seconds (_timeout));
system::error_code ec = asio::error::would_block;
_socket.async_connect (endpoint, lambda::var(ec) = lambda::_1);
do {
}
}
-/** Blocking write with timeout.
+/** Blocking write.
* @param data Buffer to write.
* @param size Number of bytes to write.
- * @param timeout Time-out, in seconds.
*/
void
-Socket::write (uint8_t const * data, int size, int timeout)
+Socket::write (uint8_t const * data, int size)
{
- _deadline.expires_from_now (posix_time::seconds (timeout));
+ _deadline.expires_from_now (posix_time::seconds (_timeout));
system::error_code ec = asio::error::would_block;
asio::async_write (_socket, asio::buffer (data, size), lambda::var(ec) = lambda::_1);
+
do {
_io_service.run_one ();
} while (ec == asio::error::would_block);
if (ec) {
- throw NetworkError ("write timed out");
+ throw NetworkError (ec.message ());
}
}
-/** Blocking read with timeout.
+void
+Socket::write (uint32_t v)
+{
+ v = htonl (v);
+ write (reinterpret_cast<uint8_t*> (&v), 4);
+}
+
+/** Blocking read.
* @param data Buffer to read to.
* @param size Number of bytes to read.
- * @param timeout Time-out, in seconds.
*/
-int
-Socket::read (uint8_t* data, int size, int timeout)
+void
+Socket::read (uint8_t* data, int size)
{
- _deadline.expires_from_now (posix_time::seconds (timeout));
+ _deadline.expires_from_now (posix_time::seconds (_timeout));
system::error_code ec = asio::error::would_block;
- int amount_read = 0;
-
- _socket.async_read_some (
- asio::buffer (data, size),
- (lambda::var(ec) = lambda::_1, lambda::var(amount_read) = lambda::_2)
- );
+ asio::async_read (_socket, asio::buffer (data, size), lambda::var(ec) = lambda::_1);
do {
_io_service.run_one ();
} while (ec == asio::error::would_block);
if (ec) {
- amount_read = 0;
- }
-
- return amount_read;
-}
-
-/** Mark some data as being `consumed', so that it will not be returned
- * as data again.
- * @param size Amount of data to consume, in bytes.
- */
-void
-Socket::consume (int size)
-{
- assert (_buffer_data >= size);
-
- _buffer_data -= size;
- if (_buffer_data > 0) {
- /* Shift still-valid data to the start of the buffer */
- memmove (_buffer, _buffer + size, _buffer_data);
- }
-}
-
-/** Read a definite amount of data from our socket, and mark
- * it as consumed.
- * @param data Where to put the data.
- * @param size Number of bytes to read.
- */
-void
-Socket::read_definite_and_consume (uint8_t* data, int size, int timeout)
-{
- int const from_buffer = min (_buffer_data, size);
- if (from_buffer > 0) {
- /* Get data from our buffer */
- memcpy (data, _buffer, from_buffer);
- consume (from_buffer);
- /* Update our output state */
- data += from_buffer;
- size -= from_buffer;
- }
-
- /* read() the rest */
- while (size > 0) {
- int const n = read (data, size, timeout);
- if (n <= 0) {
- throw NetworkError ("could not read");
- }
-
- data += n;
- size -= n;
+ throw NetworkError (ec.message ());
}
}
-/** Read as much data as is available, up to some limit.
- * @param data Where to put the data.
- * @param size Maximum amount of data to read.
- */
-void
-Socket::read_indefinite (uint8_t* data, int size, int timeout)
+uint32_t
+Socket::read_uint32 ()
{
- assert (size < int (sizeof (_buffer)));
-
- /* Amount of extra data we need to read () */
- int to_read = size - _buffer_data;
- while (to_read > 0) {
- /* read as much of it as we can (into our buffer) */
- int const n = read (_buffer + _buffer_data, to_read, timeout);
- if (n <= 0) {
- throw NetworkError ("could not read");
- }
-
- to_read -= n;
- _buffer_data += n;
- }
-
- assert (_buffer_data >= size);
-
- /* copy data into the output buffer */
- assert (size >= _buffer_data);
- memcpy (data, _buffer, size);
+ uint32_t v;
+ read (reinterpret_cast<uint8_t *> (&v), 4);
+ return ntohl (v);
}
/** @param other A Rect.
bool
still_image_file (string f)
{
-#if BOOST_FILESYSTEM_VERSION == 3
string ext = boost::filesystem::path(f).extension().string();
-#else
- string ext = boost::filesystem::path(f).extension();
-#endif
transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
- return (ext == ".tif" || ext == ".tiff" || ext == ".jpg" || ext == ".jpeg" || ext == ".png");
+ return (ext == ".tif" || ext == ".tiff" || ext == ".jpg" || ext == ".jpeg" || ext == ".png" || ext == ".bmp");
}
/** @return A pair containing CPU model name and the number of processors */