#include "KM_fileio.h"
#include "picture_frame.h"
#include "exceptions.h"
-#include "rgba_frame.h"
+#include "argb_frame.h"
#include "lut.h"
+#include "util.h"
+#include "gamma_lut.h"
-using namespace std;
-using namespace boost;
+#define DCI_GAMMA 2.6
+
+using std::string;
+using boost::shared_ptr;
using namespace libdcp;
-PictureFrame::PictureFrame (string mxf_path, int n)
+/** Make a picture frame from a 2D (monoscopic) asset.
+ * @param mxf_path Path to the asset's MXF file.
+ * @param n Frame within the asset, not taking EntryPoint into account.
+ */
+MonoPictureFrame::MonoPictureFrame (string mxf_path, int n, ASDCP::AESDecContext* c)
{
ASDCP::JP2K::MXFReader reader;
if (ASDCP_FAILURE (reader.OpenRead (mxf_path.c_str()))) {
- throw FileError ("could not open MXF file for reading", mxf_path);
+ boost::throw_exception (FileError ("could not open MXF file for reading", mxf_path));
}
/* XXX: unfortunate guesswork on this buffer size */
_buffer = new ASDCP::JP2K::FrameBuffer (4 * Kumu::Megabyte);
- if (ASDCP_FAILURE (reader.ReadFrame (n, *_buffer))) {
- throw DCPReadError ("could not read video frame");
+ if (ASDCP_FAILURE (reader.ReadFrame (n, *_buffer, c))) {
+ boost::throw_exception (DCPReadError ("could not read video frame"));
}
}
-PictureFrame::~PictureFrame ()
+MonoPictureFrame::~MonoPictureFrame ()
{
delete _buffer;
}
uint8_t const *
-PictureFrame::data () const
+MonoPictureFrame::j2k_data () const
{
- return _buffer->RoData();
+ return _buffer->RoData ();
}
int
-PictureFrame::size () const
+MonoPictureFrame::j2k_size () const
{
return _buffer->Size ();
}
-shared_ptr<RGBAFrame>
-PictureFrame::rgba_frame () const
+/** @param reduce a factor by which to reduce the resolution
+ * of the image, expressed as a power of two (pass 0 for no
+ * reduction).
+ *
+ * @return An ARGB representation of this frame. This is ARGB in the
+ * Cairo sense, so that each pixel takes up 4 bytes; the first byte
+ * is blue, second green, third red and fourth alpha (always 255).
+ *
+ */
+shared_ptr<ARGBFrame>
+MonoPictureFrame::argb_frame (int reduce, float srgb_gamma) const
{
- /* JPEG2000 -> decompressed XYZ */
-
- opj_dinfo_t* decoder = opj_create_decompress (CODEC_J2K);
- opj_dparameters_t parameters;
- opj_set_default_decoder_parameters (¶meters);
- opj_setup_decoder (decoder, ¶meters);
- opj_cio_t* cio = opj_cio_open ((opj_common_ptr) decoder, const_cast<unsigned char *> (data()), size());
- opj_image_t* xyz_frame = opj_decode (decoder, cio);
- if (!xyz_frame) {
- opj_destroy_decompress (decoder);
- opj_cio_close (cio);
- throw DCPReadError ("could not decode JPEG2000 codestream");
- }
-
+ opj_image_t* xyz_frame = decompress_j2k (const_cast<uint8_t*> (_buffer->RoData()), _buffer->Size(), reduce);
assert (xyz_frame->numcomps == 3);
-
- /* XYZ -> RGB */
-
- struct {
- double x, y, z;
- } s;
-
- struct {
- double r, g, b;
- } d;
-
- int* xyz_x = xyz_frame->comps[0].data;
- int* xyz_y = xyz_frame->comps[1].data;
- int* xyz_z = xyz_frame->comps[2].data;
+ shared_ptr<ARGBFrame> f = xyz_to_rgb (xyz_frame, GammaLUT::cache.get (12, DCI_GAMMA), GammaLUT::cache.get (12, 1 / srgb_gamma));
+ opj_image_destroy (xyz_frame);
+ return f;
+}
- shared_ptr<RGBAFrame> rgba_frame (new RGBAFrame (xyz_frame->x1, xyz_frame->y1));
-
- uint8_t* rgba = rgba_frame->data ();
-
- for (int y = 0; y < xyz_frame->y1; ++y) {
- uint8_t* rgba_line = rgba;
- for (int x = 0; x < xyz_frame->x1; ++x) {
-
- assert (*xyz_x >= 0 && *xyz_y >= 0 && *xyz_z >= 0 && *xyz_x < 4096 && *xyz_x < 4096 && *xyz_z < 4096);
-
- /* In gamma LUT */
- s.x = lut_in[*xyz_x++];
- s.y = lut_in[*xyz_y++];
- s.z = lut_in[*xyz_z++];
-
- /* DCI companding */
- s.x /= DCI_COEFFICIENT;
- s.y /= DCI_COEFFICIENT;
- s.z /= DCI_COEFFICIENT;
-
- /* XYZ to RGB */
- d.r = ((s.x * color_matrix[0][0]) + (s.y * color_matrix[0][1]) + (s.z * color_matrix[0][2]));
- d.g = ((s.x * color_matrix[1][0]) + (s.y * color_matrix[1][1]) + (s.z * color_matrix[1][2]));
- d.b = ((s.x * color_matrix[2][0]) + (s.y * color_matrix[2][1]) + (s.z * color_matrix[2][2]));
-
- d.r = min (d.r, 1.0);
- d.r = max (d.r, 0.0);
-
- d.g = min (d.g, 1.0);
- d.g = max (d.g, 0.0);
-
- d.b = min (d.b, 1.0);
- d.b = max (d.b, 0.0);
-
- /* Out gamma LUT */
- *rgba_line++ = lut_out[(int) (d.r * COLOR_DEPTH)];
- *rgba_line++ = lut_out[(int) (d.g * COLOR_DEPTH)];
- *rgba_line++ = lut_out[(int) (d.b * COLOR_DEPTH)];
- *rgba_line++ = 0xff;
- }
-
- rgba += rgba_frame->stride ();
+/** Make a picture frame from a 3D (stereoscopic) asset.
+ * @param mxf_path Path to the asset's MXF file.
+ * @param n Frame within the asset, not taking EntryPoint into account.
+ */
+StereoPictureFrame::StereoPictureFrame (string mxf_path, int n)
+{
+ ASDCP::JP2K::MXFSReader reader;
+ if (ASDCP_FAILURE (reader.OpenRead (mxf_path.c_str()))) {
+ boost::throw_exception (FileError ("could not open MXF file for reading", mxf_path));
+ }
+
+ /* XXX: unfortunate guesswork on this buffer size */
+ _buffer = new ASDCP::JP2K::SFrameBuffer (4 * Kumu::Megabyte);
+
+ if (ASDCP_FAILURE (reader.ReadFrame (n, *_buffer))) {
+ boost::throw_exception (DCPReadError ("could not read video frame"));
+ }
+}
+
+StereoPictureFrame::~StereoPictureFrame ()
+{
+ delete _buffer;
+}
+
+/** @param reduce a factor by which to reduce the resolution
+ * of the image, expressed as a power of two (pass 0 for no
+ * reduction).
+ *
+ * @param eye Eye to return (EYE_LEFT or EYE_RIGHT).
+ *
+ * @return An ARGB representation of one of the eyes (left or right)
+ * of this frame. This is ARGB in the Cairo sense, so that each
+ * pixel takes up 4 bytes; the first byte is blue, second green,
+ * third red and fourth alpha (always 255).
+ *
+ */
+shared_ptr<ARGBFrame>
+StereoPictureFrame::argb_frame (Eye eye, int reduce, float srgb_gamma) const
+{
+ opj_image_t* xyz_frame = 0;
+ switch (eye) {
+ case LEFT:
+ xyz_frame = decompress_j2k (const_cast<uint8_t*> (_buffer->Left.RoData()), _buffer->Left.Size(), reduce);
+ break;
+ case RIGHT:
+ xyz_frame = decompress_j2k (const_cast<uint8_t*> (_buffer->Right.RoData()), _buffer->Right.Size(), reduce);
+ break;
}
- opj_cio_close (cio);
+ assert (xyz_frame->numcomps == 3);
+ shared_ptr<ARGBFrame> f = xyz_to_rgb (xyz_frame, GammaLUT::cache.get (12, DCI_GAMMA), GammaLUT::cache.get (12, 1 / srgb_gamma));
opj_image_destroy (xyz_frame);
+ return f;
+}
+
+uint8_t const *
+StereoPictureFrame::left_j2k_data () const
+{
+ return _buffer->Left.RoData ();
+}
+
+int
+StereoPictureFrame::left_j2k_size () const
+{
+ return _buffer->Left.Size ();
+}
- return rgba_frame;
+uint8_t const *
+StereoPictureFrame::right_j2k_data () const
+{
+ return _buffer->Right.RoData ();
+}
+
+int
+StereoPictureFrame::right_j2k_size () const
+{
+ return _buffer->Right.Size ();
}
projects / libdcp.git / blobdiff