#include "j2k_image_proxy.h"
#include "dcpomatic_socket.h"
#include "image.h"
+#include "dcpomatic_assert.h"
#include <dcp/raw_convert.h>
#include <dcp/openjpeg_image.h>
#include <dcp/mono_picture_frame.h>
using std::string;
using std::cout;
+using std::max;
+using std::pair;
+using std::make_pair;
using boost::shared_ptr;
using boost::optional;
using boost::dynamic_pointer_cast;
, _size (size)
, _pixel_format (pixel_format)
{
-
+ /* ::image assumes 16bpp */
+ DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
}
-J2KImageProxy::J2KImageProxy (shared_ptr<const dcp::MonoPictureFrame> frame, dcp::Size size, AVPixelFormat pixel_format)
+J2KImageProxy::J2KImageProxy (
+ shared_ptr<const dcp::MonoPictureFrame> frame,
+ dcp::Size size,
+ AVPixelFormat pixel_format,
+ optional<int> forced_reduction
+ )
: _data (frame->j2k_size ())
, _size (size)
, _pixel_format (pixel_format)
+ , _forced_reduction (forced_reduction)
{
+ /* ::image assumes 16bpp */
+ DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
memcpy (_data.data().get(), frame->j2k_data(), _data.size ());
}
-J2KImageProxy::J2KImageProxy (shared_ptr<const dcp::StereoPictureFrame> frame, dcp::Size size, dcp::Eye eye, AVPixelFormat pixel_format)
+J2KImageProxy::J2KImageProxy (
+ shared_ptr<const dcp::StereoPictureFrame> frame,
+ dcp::Size size,
+ dcp::Eye eye,
+ AVPixelFormat pixel_format,
+ optional<int> forced_reduction
+ )
: _size (size)
, _eye (eye)
, _pixel_format (pixel_format)
+ , _forced_reduction (forced_reduction)
{
+ /* ::image assumes 16bpp */
+ DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
switch (eye) {
case dcp::EYE_LEFT:
_data = Data (frame->left_j2k_size ());
socket->read (_data.data().get (), _data.size ());
}
-void
-J2KImageProxy::ensure_j2k () const
+int
+J2KImageProxy::prepare (optional<dcp::Size> target_size) const
{
- if (!_j2k) {
- _j2k = dcp::decompress_j2k (const_cast<uint8_t*> (_data.data().get()), _data.size (), 0);
+ boost::mutex::scoped_lock lm (_mutex);
+
+ if (_image && target_size == _target_size) {
+ DCPOMATIC_ASSERT (_reduce);
+ return *_reduce;
}
-}
-shared_ptr<Image>
-J2KImageProxy::image (optional<dcp::NoteHandler>) const
-{
- ensure_j2k ();
-
- if (_j2k->precision(0) < 12) {
- int const shift = 12 - _j2k->precision (0);
- for (int c = 0; c < 3; ++c) {
- int* p = _j2k->data (c);
- for (int y = 0; y < _j2k->size().height; ++y) {
- for (int x = 0; x < _j2k->size().width; ++x) {
- *p++ <<= shift;
- }
- }
+ int reduce = 0;
+
+ if (_forced_reduction) {
+ reduce = *_forced_reduction;
+ } else {
+ while (target_size && (_size.width / pow(2, reduce)) > target_size->width && (_size.height / pow(2, reduce)) > target_size->height) {
+ ++reduce;
}
+
+ --reduce;
+ reduce = max (0, reduce);
}
- shared_ptr<Image> image (new Image (_pixel_format, _size, true));
+ shared_ptr<dcp::OpenJPEGImage> decompressed = dcp::decompress_j2k (const_cast<uint8_t*> (_data.data().get()), _data.size (), reduce);
+ _image.reset (new Image (_pixel_format, decompressed->size(), true));
+
+ int const shift = 16 - decompressed->precision (0);
/* Copy data in whatever format (sRGB or XYZ) into our Image; I'm assuming
the data is 12-bit either way.
*/
+ int const width = decompressed->size().width;
+
int p = 0;
- for (int y = 0; y < _j2k->size().height; ++y) {
- uint16_t* q = (uint16_t *) (image->data()[0] + y * image->stride()[0]);
- for (int x = 0; x < _j2k->size().width; ++x) {
- for (int c = 0; c < 3; ++c) {
- *q++ = _j2k->data(c)[p] << 4;
- }
+ int* decomp_0 = decompressed->data (0);
+ int* decomp_1 = decompressed->data (1);
+ int* decomp_2 = decompressed->data (2);
+ for (int y = 0; y < decompressed->size().height; ++y) {
+ uint16_t* q = (uint16_t *) (_image->data()[0] + y * _image->stride()[0]);
+ for (int x = 0; x < width; ++x) {
+ *q++ = decomp_0[p] << shift;
+ *q++ = decomp_1[p] << shift;
+ *q++ = decomp_2[p] << shift;
++p;
}
}
- return image;
+ _target_size = target_size;
+ _reduce = reduce;
+
+ return reduce;
+}
+
+pair<shared_ptr<Image>, int>
+J2KImageProxy::image (optional<dcp::Size> target_size) const
+{
+ int const r = prepare (target_size);
+ /* I think this is safe without a lock on mutex. _image is guaranteed to be
+ set up when prepare() has happened.
+ */
+ return make_pair (_image, r);
}
void
node->add_child("Width")->add_child_text (raw_convert<string> (_size.width));
node->add_child("Height")->add_child_text (raw_convert<string> (_size.height));
if (_eye) {
- node->add_child("Eye")->add_child_text (raw_convert<string> (_eye.get ()));
+ node->add_child("Eye")->add_child_text (raw_convert<string> (static_cast<int> (_eye.get ())));
}
node->add_child("Size")->add_child_text (raw_convert<string> (_data.size ()));
}
, _size (size)
, _pixel_format (pixel_format)
{
+ /* ::image assumes 16bpp */
+ DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
+}
+size_t
+J2KImageProxy::memory_used () const
+{
+ size_t m = _data.size();
+ if (_image) {
+ /* 3 components, 16-bits per pixel */
+ m += 3 * 2 * _image->size().width * _image->size().height;
+ }
+ return m;
}
projects / dcpomatic.git / blobdiff