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| author | Tor Andersson <tor@ghostscript.com> | 2005-03-30 08:30:22 +0200 |
|---|---|---|
| committer | Tor Andersson <tor@ghostscript.com> | 2005-03-30 08:30:22 +0200 |
| commit | ee154f16bd09a43359967f7e7b86c3677c09461d (patch) | |
| tree | 08896cfa9ff55e05bfe7855965c620d45115d4d5 /filter/jpxd.c | |
| parent | 460ad7040d67a4a93a153f98095ff952a2b15d37 (diff) | |
| download | mupdf-ee154f16bd09a43359967f7e7b86c3677c09461d.tar.xz | |
rename part 1 -- files
Diffstat (limited to 'filter/jpxd.c')
| -rw-r--r-- | filter/jpxd.c | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/filter/jpxd.c b/filter/jpxd.c deleted file mode 100644 index 2aa93448..00000000 --- a/filter/jpxd.c +++ /dev/null @@ -1,143 +0,0 @@ -#include <fitz.h> - -/* TODO: bpc */ - -/* - * We use the Jasper JPEG2000 coder for now. - */ - -#include <jasper/jasper.h> - -static char *colorspacename(jas_clrspc_t clrspc) -{ - switch (jas_clrspc_fam(clrspc)) - { - case JAS_CLRSPC_FAM_UNKNOWN: return "Unknown"; - case JAS_CLRSPC_FAM_XYZ: return "XYZ"; - case JAS_CLRSPC_FAM_LAB: return "Lab"; - case JAS_CLRSPC_FAM_GRAY: return "Gray"; - case JAS_CLRSPC_FAM_RGB: return "RGB"; - case JAS_CLRSPC_FAM_YCBCR: return "YCbCr"; - } - return "Unknown"; -} - -typedef struct fz_jpxd_s fz_jpxd; - -struct fz_jpxd_s -{ - fz_filter super; - jas_stream_t *stream; - jas_image_t *image; - int offset; - int stage; -}; - -fz_error * -fz_newjpxd(fz_filter **fp, fz_obj *params) -{ - int err; - - FZ_NEWFILTER(fz_jpxd, d, jpxd); - - err = jas_init(); - if (err) { - fz_free(d); - return fz_throw("ioerror in jpxd: jas_init()"); - } - - d->stream = jas_stream_memopen(nil, 0); - if (!d->stream) { - fz_free(d); - return fz_throw("ioerror in jpxd: jas_stream_memopen()"); - } - - d->image = nil; - d->offset = 0; - d->stage = 0; - - return nil; -} - -void -fz_dropjpxd(fz_filter *filter) -{ - fz_jpxd *d = (fz_jpxd*)filter; - if (d->stream) jas_stream_close(d->stream); - if (d->image) jas_image_destroy(d->image); -} - -fz_error * -fz_processjpxd(fz_filter *filter, fz_buffer *in, fz_buffer *out) -{ - fz_jpxd *d = (fz_jpxd*)filter; - int n, bpc, w, h; - int i, x, y; - - switch (d->stage) - { - case 0: goto input; - case 1: goto decode; - case 2: goto output; - } - -input: - while (in->rp < in->wp) { - n = jas_stream_write(d->stream, in->rp, in->wp - in->rp); - in->rp += n; - } - - if (!in->eof) - return fz_ioneedin; - - d->stage = 1; - -decode: - jas_stream_seek(d->stream, 0, 0); - - d->image = jas_image_decode(d->stream, -1, 0); - if (!d->image) - return fz_throw("ioerror in jpxd: unable to decode image data"); - - fprintf(stderr, "P%c\n# JPX %d x %d n=%d bpc=%d colorspace=%04x %s\n%d %d\n%d\n", - jas_image_numcmpts(d->image) == 1 ? '5' : '6', - - jas_image_width(d->image), - jas_image_height(d->image), - jas_image_numcmpts(d->image), - jas_image_cmptprec(d->image, 0), - jas_image_clrspc(d->image), - colorspacename(jas_image_clrspc(d->image)), - - jas_image_width(d->image), - jas_image_height(d->image), - (1 << jas_image_cmptprec(d->image, 0)) - 1); - - d->stage = 2; - -output: - w = jas_image_width(d->image); - h = jas_image_height(d->image); - n = jas_image_numcmpts(d->image); - bpc = jas_image_cmptprec(d->image, 0); /* use precision of first component for all... */ - - while (d->offset < w * h) - { - y = d->offset / w; - x = d->offset - y * w; - - /* FIXME bpc != 8 */ - - if (out->wp + n >= out->ep) - return fz_ioneedout; - - for (i = 0; i < n; i++) - *out->wp++ = jas_image_readcmptsample(d->image, i, x, y); - - d->offset ++; - } - - out->eof = 1; - return fz_iodone; -} - |