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Added precinct size option. Also added the jp2klib_version symbol on the _imaging module.

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This commit is contained in:
Alastair Houghton 2014-03-14 15:40:30 +00:00
parent 5cb73c94e9
commit 9a1b6966b5
5 changed files with 28 additions and 3 deletions
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2
PIL/Jpeg2KImagePlugin.py
View File

@ -196,6 +196,7 @@ def _save(im, fp, filename):
quality_layers = info.get('quality_layers', None)
num_resolutions = info.get('num_resolutions', 0)
cblk_size = info.get('codeblock_size', None)
precinct_size = info.get('precinct_size', None)
irreversible = info.get('irreversible', False)
progression = info.get('progression', 'LRCP')
cinema_mode = info.get('cinema_mode', 'no')
@ -212,6 +213,7 @@ def _save(im, fp, filename):
quality_layers,
num_resolutions,
cblk_size,
precinct_size,
irreversible,
progression,
cinema_mode,

7
_imaging.c
View File

@ -3461,6 +3461,13 @@ setup_module(PyObject* m) {
}
#endif
#ifdef HAVE_OPENJPEG
{
extern const char *ImagingJpeg2KVersion(void);
PyDict_SetItemString(d, "jp2klib_version", PyUnicode_FromString(ImagingJpeg2KVersion()));
}
#endif
#ifdef HAVE_LIBZ
/* zip encoding strategies */
PyModule_AddIntConstant(m, "DEFAULT_STRATEGY", Z_DEFAULT_STRATEGY);

10
encode.c
View File

@ -836,7 +836,7 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args)
char *quality_mode = "rates";
PyObject *quality_layers = NULL;
int num_resolutions = 0;
PyObject *cblk_size = NULL;
PyObject *cblk_size = NULL, *precinct_size = NULL;
PyObject *irreversible = NULL;
char *progression = "LRCP";
OPJ_PROG_ORDER prog_order;
@ -844,10 +844,11 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args)
OPJ_CINEMA_MODE cine_mode;
int fd = -1;
if (!PyArg_ParseTuple(args, "ss|OOOsOIOOssi", &mode, &format,
if (!PyArg_ParseTuple(args, "ss|OOOsOIOOOssi", &mode, &format,
&offset, &tile_offset, &tile_size,
&quality_mode, &quality_layers, &num_resolutions,
&cblk_size, &irreversible, &progression, &cinema_mode,
&cblk_size, &precinct_size,
&irreversible, &progression, &cinema_mode,
&fd))
return NULL;
@ -916,6 +917,9 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args)
j2k_decode_coord_tuple(cblk_size,
&context->cblk_width,
&context->cblk_height);
j2k_decode_coord_tuple(precinct_size,
&context->precinct_width,
&context->precinct_height);
context->irreversible = PyObject_IsTrue(irreversible);
context->progression = prog_order;

3
libImaging/Jpeg2K.h
View File

@ -65,6 +65,9 @@ typedef struct {
/* Code block size */
int cblk_width, cblk_height;
/* Precinct size */
int precinct_width, precinct_height;
/* Compression style */
int irreversible;

9
libImaging/Jpeg2KEncode.c
View File

@ -364,6 +364,15 @@ j2k_encode_entry(Imaging im, ImagingCodecState state,
params.cblockh_init = context->cblk_height;
}
if (context->precinct_width >= 4 && context->precinct_height >= 4
&& context->precinct_width >= context->cblk_width
&& context->precinct_height > context->cblk_height) {
params.prcw_init[0] = context->precinct_width;
params.prch_init[0] = context->precinct_height;
params.res_spec = 1;
params.csty |= 0x01;
}
params.irreversible = context->irreversible;
params.prog_order = context->progression;