diff options
Diffstat (limited to 'converter/other/jpeg2000/libjasper/base/jas_image.c')
| -rw-r--r-- | converter/other/jpeg2000/libjasper/base/jas_image.c | 1315 |
1 files changed, 659 insertions, 656 deletions
diff --git a/converter/other/jpeg2000/libjasper/base/jas_image.c b/converter/other/jpeg2000/libjasper/base/jas_image.c index 5ee13a0d..49a0db79 100644 --- a/converter/other/jpeg2000/libjasper/base/jas_image.c +++ b/converter/other/jpeg2000/libjasper/base/jas_image.c @@ -6,14 +6,14 @@ */ /* __START_OF_JASPER_LICENSE__ - * + * * JasPer Software License - * + * * IMAGE POWER JPEG-2000 PUBLIC LICENSE * ************************************ - * + * * GRANT: - * + * * Permission is hereby granted, free of charge, to any person (the "User") * obtaining a copy of this software and associated documentation, to deal * in the JasPer Software without restriction, including without limitation @@ -21,22 +21,22 @@ * and/or sell copies of the JasPer Software (in source and binary forms), * and to permit persons to whom the JasPer Software is furnished to do so, * provided further that the License Conditions below are met. - * + * * License Conditions * ****************** - * + * * A. Redistributions of source code must retain the above copyright notice, * and this list of conditions, and the following disclaimer. - * + * * B. Redistributions in binary form must reproduce the above copyright * notice, and this list of conditions, and the following disclaimer in * the documentation and/or other materials provided with the distribution. - * + * * C. Neither the name of Image Power, Inc. nor any other contributor * (including, but not limited to, the University of British Columbia and * Michael David Adams) may be used to endorse or promote products derived * from this software without specific prior written permission. - * + * * D. User agrees that it shall not commence any action against Image Power, * Inc., the University of British Columbia, Michael David Adams, or any * other contributors (collectively "Licensors") for infringement of any @@ -56,17 +56,17 @@ * trade dress, or service mark rights); and (v) divisions, continuations, * renewals, reissues and extensions of the foregoing (as and to the extent * applicable) now existing, hereafter filed, issued or acquired. - * + * * E. If User commences an infringement action against any Licensor(s) then * such Licensor(s) shall have the right to terminate User's license and * all sublicenses that have been granted hereunder by User to other parties. - * + * * F. This software is for use only in hardware or software products that * are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1). No license * or right to this Software is granted for products that do not comply * with ISO/IEC 15444-1. The JPEG-2000 Part 1 standard can be purchased * from the ISO. - * + * * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. * NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER * THIS DISCLAIMER. THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND @@ -106,7 +106,7 @@ * TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS * CUSTOMERS AND END-USERS OF ITS PRODUCTS ARE PROVIDED WITH A COPY OF THE * NOTICE SPECIFIED IN THIS SECTION. - * + * * __END_OF_JASPER_LICENSE__ */ @@ -166,215 +166,215 @@ static jas_image_fmtinfo_t jas_image_fmtinfos[JAS_IMAGE_MAXFMTS]; jas_image_t *jas_image_create(uint_fast16_t numcmpts, jas_image_cmptparm_t *cmptparms, int colorspace) { - jas_image_t *image; - uint_fast32_t rawsize; - uint_fast32_t inmem; - uint_fast16_t cmptno; - jas_image_cmptparm_t *cmptparm; - - if (!(image = jas_image_create0())) { - return 0; - } - - image->colorspace_ = colorspace; - image->maxcmpts_ = numcmpts; - image->inmem_ = true; - - /* Allocate memory for the per-component information. */ - if (!(image->cmpts_ = jas_malloc(image->maxcmpts_ * - sizeof(jas_image_cmpt_t *)))) { - jas_image_destroy(image); - return 0; - } - /* Initialize in case of failure. */ - for (cmptno = 0; cmptno < image->maxcmpts_; ++cmptno) { - image->cmpts_[cmptno] = 0; - } - - /* Compute the approximate raw size of the image. */ - rawsize = 0; - for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno, - ++cmptparm) { - rawsize += cmptparm->width * cmptparm->height * - (cmptparm->prec + 7) / 8; - } - /* Decide whether to buffer the image data in memory, based on the - raw size of the image. */ - inmem = (rawsize < JAS_IMAGE_INMEMTHRESH); - - /* Create the individual image components. */ - for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno, - ++cmptparm) { - if (!(image->cmpts_[cmptno] = jas_image_cmpt_create(cmptparm->tlx, - cmptparm->tly, cmptparm->hstep, cmptparm->vstep, - cmptparm->width, cmptparm->height, cmptparm->prec, - cmptparm->sgnd, inmem))) { - jas_image_destroy(image); - return 0; - } - ++image->numcmpts_; - } - - /* Determine the bounding box for all of the components on the - reference grid (i.e., the image area) */ - jas_image_setbbox(image); - - return image; + jas_image_t *image; + uint_fast32_t rawsize; + uint_fast32_t inmem; + uint_fast16_t cmptno; + jas_image_cmptparm_t *cmptparm; + + if (!(image = jas_image_create0())) { + return 0; + } + + image->colorspace_ = colorspace; + image->maxcmpts_ = numcmpts; + image->inmem_ = true; + + /* Allocate memory for the per-component information. */ + if (!(image->cmpts_ = jas_malloc(image->maxcmpts_ * + sizeof(jas_image_cmpt_t *)))) { + jas_image_destroy(image); + return 0; + } + /* Initialize in case of failure. */ + for (cmptno = 0; cmptno < image->maxcmpts_; ++cmptno) { + image->cmpts_[cmptno] = 0; + } + + /* Compute the approximate raw size of the image. */ + rawsize = 0; + for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno, + ++cmptparm) { + rawsize += cmptparm->width * cmptparm->height * + (cmptparm->prec + 7) / 8; + } + /* Decide whether to buffer the image data in memory, based on the + raw size of the image. */ + inmem = (rawsize < JAS_IMAGE_INMEMTHRESH); + + /* Create the individual image components. */ + for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno, + ++cmptparm) { + if (!(image->cmpts_[cmptno] = jas_image_cmpt_create(cmptparm->tlx, + cmptparm->tly, cmptparm->hstep, cmptparm->vstep, + cmptparm->width, cmptparm->height, cmptparm->prec, + cmptparm->sgnd, inmem))) { + jas_image_destroy(image); + return 0; + } + ++image->numcmpts_; + } + + /* Determine the bounding box for all of the components on the + reference grid (i.e., the image area) */ + jas_image_setbbox(image); + + return image; } jas_image_t *jas_image_create0() { - jas_image_t *image; + jas_image_t *image; - if (!(image = jas_malloc(sizeof(jas_image_t)))) { - return 0; - } + if (!(image = jas_malloc(sizeof(jas_image_t)))) { + return 0; + } - image->tlx_ = 0; - image->tly_ = 0; - image->brx_ = 0; - image->bry_ = 0; - image->colorspace_ = JAS_IMAGE_CS_UNKNOWN; - image->numcmpts_ = 0; - image->maxcmpts_ = 0; - image->cmpts_ = 0; - image->inmem_ = true; - image->iccp_ = 0; - image->iccplen_ = 0; + image->tlx_ = 0; + image->tly_ = 0; + image->brx_ = 0; + image->bry_ = 0; + image->colorspace_ = JAS_IMAGE_CS_UNKNOWN; + image->numcmpts_ = 0; + image->maxcmpts_ = 0; + image->cmpts_ = 0; + image->inmem_ = true; + image->iccp_ = 0; + image->iccplen_ = 0; - return image; + return image; } jas_image_t *jas_image_copy(jas_image_t *image) { - jas_image_t *newimage; - int cmptno; + jas_image_t *newimage; + int cmptno; - newimage = jas_image_create0(); - if (jas_image_growcmpts(newimage, image->numcmpts_)) { - goto error; - } - for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) { - if (!(newimage->cmpts_[cmptno] = jas_image_cmpt_copy(image->cmpts_[cmptno]))) { - goto error; - } - ++newimage->numcmpts_; - } + newimage = jas_image_create0(); + if (jas_image_growcmpts(newimage, image->numcmpts_)) { + goto error; + } + for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) { + if (!(newimage->cmpts_[cmptno] = jas_image_cmpt_copy(image->cmpts_[cmptno]))) { + goto error; + } + ++newimage->numcmpts_; + } - jas_image_setbbox(newimage); + jas_image_setbbox(newimage); - return newimage; + return newimage; error: - if (newimage) { - jas_image_destroy(newimage); - } - return 0; + if (newimage) { + jas_image_destroy(newimage); + } + return 0; } static jas_image_cmpt_t *jas_image_cmpt_create0() { - jas_image_cmpt_t *cmpt; - if (!(cmpt = jas_malloc(sizeof(jas_image_cmpt_t)))) { - return 0; - } - memset(cmpt, 0, sizeof(jas_image_cmpt_t)); - cmpt->type_ = JAS_IMAGE_CT_UNKNOWN; - return cmpt; + jas_image_cmpt_t *cmpt; + if (!(cmpt = jas_malloc(sizeof(jas_image_cmpt_t)))) { + return 0; + } + memset(cmpt, 0, sizeof(jas_image_cmpt_t)); + cmpt->type_ = JAS_IMAGE_CT_UNKNOWN; + return cmpt; } static jas_image_cmpt_t *jas_image_cmpt_copy(jas_image_cmpt_t *cmpt) { - jas_image_cmpt_t *newcmpt; - - if (!(newcmpt = jas_image_cmpt_create0())) { - return 0; - } - newcmpt->tlx_ = cmpt->tlx_; - newcmpt->tly_ = cmpt->tly_; - newcmpt->hstep_ = cmpt->hstep_; - newcmpt->vstep_ = cmpt->vstep_; - newcmpt->width_ = cmpt->width_; - newcmpt->height_ = cmpt->height_; - newcmpt->prec_ = cmpt->prec_; - newcmpt->sgnd_ = cmpt->sgnd_; - newcmpt->cps_ = cmpt->cps_; - newcmpt->type_ = cmpt->type_; - if (!(newcmpt->stream_ = jas_stream_memopen(0, 0))) { - return 0; - } - if (jas_stream_seek(cmpt->stream_, 0, SEEK_SET)) { - return 0; - } - if (jas_stream_copy(newcmpt->stream_, cmpt->stream_, -1)) { - return 0; - } - if (jas_stream_seek(newcmpt->stream_, 0, SEEK_SET)) { - return 0; - } - return newcmpt; + jas_image_cmpt_t *newcmpt; + + if (!(newcmpt = jas_image_cmpt_create0())) { + return 0; + } + newcmpt->tlx_ = cmpt->tlx_; + newcmpt->tly_ = cmpt->tly_; + newcmpt->hstep_ = cmpt->hstep_; + newcmpt->vstep_ = cmpt->vstep_; + newcmpt->width_ = cmpt->width_; + newcmpt->height_ = cmpt->height_; + newcmpt->prec_ = cmpt->prec_; + newcmpt->sgnd_ = cmpt->sgnd_; + newcmpt->cps_ = cmpt->cps_; + newcmpt->type_ = cmpt->type_; + if (!(newcmpt->stream_ = jas_stream_memopen(0, 0))) { + return 0; + } + if (jas_stream_seek(cmpt->stream_, 0, SEEK_SET)) { + return 0; + } + if (jas_stream_copy(newcmpt->stream_, cmpt->stream_, -1)) { + return 0; + } + if (jas_stream_seek(newcmpt->stream_, 0, SEEK_SET)) { + return 0; + } + return newcmpt; } void jas_image_destroy(jas_image_t *image) { - int i; + int i; - if (image->cmpts_) { - for (i = 0; i < image->numcmpts_; ++i) { - jas_image_cmpt_destroy(image->cmpts_[i]); - image->cmpts_[i] = 0; - } - jas_free(image->cmpts_); - } - jas_free(image); + if (image->cmpts_) { + for (i = 0; i < image->numcmpts_; ++i) { + jas_image_cmpt_destroy(image->cmpts_[i]); + image->cmpts_[i] = 0; + } + jas_free(image->cmpts_); + } + jas_free(image); } static jas_image_cmpt_t *jas_image_cmpt_create(uint_fast32_t tlx, uint_fast32_t tly, uint_fast32_t hstep, uint_fast32_t vstep, uint_fast32_t width, uint_fast32_t height, uint_fast16_t depth, bool sgnd, uint_fast32_t inmem) { - jas_image_cmpt_t *cmpt; - long size; - - if (!(cmpt = jas_malloc(sizeof(jas_image_cmpt_t)))) { - return 0; - } - - cmpt->tlx_ = tlx; - cmpt->tly_ = tly; - cmpt->hstep_ = hstep; - cmpt->vstep_ = vstep; - cmpt->width_ = width; - cmpt->height_ = height; - cmpt->prec_ = depth; - cmpt->sgnd_ = sgnd; - cmpt->stream_ = 0; - cmpt->cps_ = (depth + 7) / 8; - - size = cmpt->width_ * cmpt->height_ * cmpt->cps_; - cmpt->stream_ = (inmem) ? jas_stream_memopen(0, size) : jas_stream_tmpfile(); - if (!cmpt->stream_) { - jas_image_cmpt_destroy(cmpt); - return 0; - } - - /* Zero the component data. This isn't necessary, but it is - convenient for debugging purposes. */ - if (jas_stream_seek(cmpt->stream_, size - 1, SEEK_SET) < 0 || - jas_stream_putc(cmpt->stream_, 0) == EOF || - jas_stream_seek(cmpt->stream_, 0, SEEK_SET) < 0) { - jas_image_cmpt_destroy(cmpt); - return 0; - } - - return cmpt; + jas_image_cmpt_t *cmpt; + long size; + + if (!(cmpt = jas_malloc(sizeof(jas_image_cmpt_t)))) { + return 0; + } + + cmpt->tlx_ = tlx; + cmpt->tly_ = tly; + cmpt->hstep_ = hstep; + cmpt->vstep_ = vstep; + cmpt->width_ = width; + cmpt->height_ = height; + cmpt->prec_ = depth; + cmpt->sgnd_ = sgnd; + cmpt->stream_ = 0; + cmpt->cps_ = (depth + 7) / 8; + + size = cmpt->width_ * cmpt->height_ * cmpt->cps_; + cmpt->stream_ = (inmem) ? jas_stream_memopen(0, size) : jas_stream_tmpfile(); + if (!cmpt->stream_) { + jas_image_cmpt_destroy(cmpt); + return 0; + } + + /* Zero the component data. This isn't necessary, but it is + convenient for debugging purposes. */ + if (jas_stream_seek(cmpt->stream_, size - 1, SEEK_SET) < 0 || + jas_stream_putc(cmpt->stream_, 0) == EOF || + jas_stream_seek(cmpt->stream_, 0, SEEK_SET) < 0) { + jas_image_cmpt_destroy(cmpt); + return 0; + } + + return cmpt; } static void jas_image_cmpt_destroy(jas_image_cmpt_t *cmpt) { - if (cmpt->stream_) { - jas_stream_close(cmpt->stream_); - } - jas_free(cmpt); + if (cmpt->stream_) { + jas_stream_close(cmpt->stream_); + } + jas_free(cmpt); } /*****************************************************************************\ @@ -383,53 +383,53 @@ static void jas_image_cmpt_destroy(jas_image_cmpt_t *cmpt) void pmjas_image_decode(jas_stream_t * const in, - int const fmtArg, - const char * const optstr, - jas_image_t ** const imagePP, - const char ** const errorP) { + int const fmtArg, + const char * const optstr, + jas_image_t ** const imagePP, + const char ** const errorP) { /*---------------------------------------------------------------------------- Create an image from a stream in some specified format -----------------------------------------------------------------------------*/ - jas_image_fmtinfo_t *fmtinfo; - int fmt; - - /* If possible, try to determine the format of the input data. */ - if (fmtArg < 0) { - if ((fmt = jas_image_getfmt(in)) < 0) { - pm_asprintf(errorP, "jas_image_getfmt failed"); - return; - } - } else - fmt = fmtArg; - - if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) { - pm_asprintf(errorP, "jas_image_lookupfmtbyid of format %d failed", - fmt); - return; - } - { - const char * error; - - (*fmtinfo->ops.decode)(in, optstr, imagePP, &error); - if (error) { - pm_asprintf(errorP, "decoder failed. %s", error); - pm_strfree(error); - } else { - *errorP = NULL; - } - } + jas_image_fmtinfo_t *fmtinfo; + int fmt; + + /* If possible, try to determine the format of the input data. */ + if (fmtArg < 0) { + if ((fmt = jas_image_getfmt(in)) < 0) { + pm_asprintf(errorP, "jas_image_getfmt failed"); + return; + } + } else + fmt = fmtArg; + + if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) { + pm_asprintf(errorP, "jas_image_lookupfmtbyid of format %d failed", + fmt); + return; + } + { + const char * error; + + (*fmtinfo->ops.decode)(in, optstr, imagePP, &error); + if (error) { + pm_asprintf(errorP, "decoder failed. %s", error); + pm_strfree(error); + } else { + *errorP = NULL; + } + } } int jas_image_encode(jas_image_t *image, jas_stream_t *out, int fmt, char *optstr) { - jas_image_fmtinfo_t *fmtinfo; - if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) { - return -1; - } - return (fmtinfo->ops.encode) ? (*fmtinfo->ops.encode)(image, out, - optstr) : (-1); + jas_image_fmtinfo_t *fmtinfo; + if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) { + return -1; + } + return (fmtinfo->ops.encode) ? (*fmtinfo->ops.encode)(image, out, + optstr) : (-1); } /******************************************************************************\ @@ -439,137 +439,137 @@ int jas_image_encode(jas_image_t *image, jas_stream_t *out, int fmt, char *optst int jas_image_readcmpt(jas_image_t *image, uint_fast16_t cmptno, uint_fast32_t x, uint_fast32_t y, uint_fast32_t width, uint_fast32_t height, jas_matrix_t *data) { - jas_image_cmpt_t *cmpt; - uint_fast32_t i; - uint_fast32_t j; - int k; - jas_seqent_t v; - int c; - jas_seqent_t *dr; - jas_seqent_t *d; - int drs; - - if (cmptno >= image->numcmpts_) { - return -1; - } - - cmpt = image->cmpts_[cmptno]; - if (x >= cmpt->width_ || y >= cmpt->height_ || - x + width > cmpt->width_ || - y + height > cmpt->height_) { - return -1; - } - - if (jas_matrix_numrows(data) != height || jas_matrix_numcols(data) != width) { - if (jas_matrix_resize(data, height, width)) { - return -1; - } - } - - dr = jas_matrix_getref(data, 0, 0); - drs = jas_matrix_rowstep(data); - for (i = 0; i < height; ++i, dr += drs) { - d = dr; - if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * (y + i) + x) - * cmpt->cps_, SEEK_SET) < 0) { - return -1; - } - for (j = width; j > 0; --j, ++d) { - v = 0; - for (k = cmpt->cps_; k > 0; --k) { - if ((c = jas_stream_getc(cmpt->stream_)) == EOF) { - return -1; - } - v = (v << 8) | (c & 0xff); - } - *d = bitstoint(v, cmpt->prec_, cmpt->sgnd_); - } - } - - return 0; + jas_image_cmpt_t *cmpt; + uint_fast32_t i; + uint_fast32_t j; + int k; + jas_seqent_t v; + int c; + jas_seqent_t *dr; + jas_seqent_t *d; + int drs; + + if (cmptno >= image->numcmpts_) { + return -1; + } + + cmpt = image->cmpts_[cmptno]; + if (x >= cmpt->width_ || y >= cmpt->height_ || + x + width > cmpt->width_ || + y + height > cmpt->height_) { + return -1; + } + + if (jas_matrix_numrows(data) != height || jas_matrix_numcols(data) != width) { + if (jas_matrix_resize(data, height, width)) { + return -1; + } + } + + dr = jas_matrix_getref(data, 0, 0); + drs = jas_matrix_rowstep(data); + for (i = 0; i < height; ++i, dr += drs) { + d = dr; + if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * (y + i) + x) + * cmpt->cps_, SEEK_SET) < 0) { + return -1; + } + for (j = width; j > 0; --j, ++d) { + v = 0; + for (k = cmpt->cps_; k > 0; --k) { + if ((c = jas_stream_getc(cmpt->stream_)) == EOF) { + return -1; + } + v = (v << 8) | (c & 0xff); + } + *d = bitstoint(v, cmpt->prec_, cmpt->sgnd_); + } + } + + return 0; } #if 0 int_fast64_t jas_image_readcmpt1(jas_image_t *image, uint_fast16_t cmptno, uint_fast32_t x, uint_fast32_t y) { - jas_image_cmpt_t *cmpt; - int k; - int c; - int_fast64_t v; - cmpt = image->cmpts_[cmptno]; - if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * y + x) * cmpt->cps_, - SEEK_SET) < 0) { - goto error; - } - v = 0; - for (k = cmpt->cps_; k > 0; --k) { - if ((c = jas_stream_getc(cmpt->stream_)) == EOF) { - goto error; - } - v = (v << 8) | (c & 0xff); - } + jas_image_cmpt_t *cmpt; + int k; + int c; + int_fast64_t v; + cmpt = image->cmpts_[cmptno]; + if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * y + x) * cmpt->cps_, + SEEK_SET) < 0) { + goto error; + } + v = 0; + for (k = cmpt->cps_; k > 0; --k) { + if ((c = jas_stream_getc(cmpt->stream_)) == EOF) { + goto error; + } + v = (v << 8) | (c & 0xff); + } if (cmpt->sgnd_) { - abort(); + abort(); } - return v; + return v; error: - return 0; + return 0; } #endif int jas_image_writecmpt(jas_image_t *image, uint_fast16_t cmptno, uint_fast32_t x, uint_fast32_t y, uint_fast32_t width, uint_fast32_t height, jas_matrix_t *data) { - jas_image_cmpt_t *cmpt; - uint_fast32_t i; - uint_fast32_t j; - jas_seqent_t *d; - jas_seqent_t *dr; - int drs; - jas_seqent_t v; - int k; - int c; - - if (cmptno >= image->numcmpts_) { - return -1; - } - - cmpt = image->cmpts_[cmptno]; - if (x >= cmpt->width_ || y >= cmpt->height_ || - x + width > cmpt->width_ || - y + height > cmpt->height_) { - return -1; - } - - if (jas_matrix_numrows(data) != height || jas_matrix_numcols(data) != width) { - return -1; - } - - dr = jas_matrix_getref(data, 0, 0); - drs = jas_matrix_rowstep(data); - for (i = 0; i < height; ++i, dr += drs) { - d = dr; - if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * (y + i) + x) - * cmpt->cps_, SEEK_SET) < 0) { - return -1; - } - for (j = width; j > 0; --j, ++d) { - v = inttobits(*d, cmpt->prec_, cmpt->sgnd_); - for (k = cmpt->cps_; k > 0; --k) { - c = (v >> (8 * (cmpt->cps_ - 1))) & 0xff; - if (jas_stream_putc(cmpt->stream_, - (unsigned char) c) == EOF) { - return -1; - } - v <<= 8; - } - } - } - - return 0; + jas_image_cmpt_t *cmpt; + uint_fast32_t i; + uint_fast32_t j; + jas_seqent_t *d; + jas_seqent_t *dr; + int drs; + jas_seqent_t v; + int k; + int c; + + if (cmptno >= image->numcmpts_) { + return -1; + } + + cmpt = image->cmpts_[cmptno]; + if (x >= cmpt->width_ || y >= cmpt->height_ || + x + width > cmpt->width_ || + y + height > cmpt->height_) { + return -1; + } + + if (jas_matrix_numrows(data) != height || jas_matrix_numcols(data) != width) { + return -1; + } + + dr = jas_matrix_getref(data, 0, 0); + drs = jas_matrix_rowstep(data); + for (i = 0; i < height; ++i, dr += drs) { + d = dr; + if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * (y + i) + x) + * cmpt->cps_, SEEK_SET) < 0) { + return -1; + } + for (j = width; j > 0; --j, ++d) { + v = inttobits(*d, cmpt->prec_, cmpt->sgnd_); + for (k = cmpt->cps_; k > 0; --k) { + c = (v >> (8 * (cmpt->cps_ - 1))) & 0xff; + if (jas_stream_putc(cmpt->stream_, + (unsigned char) c) == EOF) { + return -1; + } + v <<= 8; + } + } + } + + return 0; } /******************************************************************************\ @@ -578,200 +578,203 @@ int jas_image_writecmpt(jas_image_t *image, uint_fast16_t cmptno, uint_fast32_t void jas_image_clearfmts() { - int i; - jas_image_fmtinfo_t *fmtinfo; - for (i = 0; i < jas_image_numfmts; ++i) { - fmtinfo = &jas_image_fmtinfos[i]; - if (fmtinfo->name) { - jas_free(fmtinfo->name); - fmtinfo->name = 0; - } - if (fmtinfo->ext) { - jas_free(fmtinfo->ext); - fmtinfo->ext = 0; - } - if (fmtinfo->desc) { - jas_free(fmtinfo->desc); - fmtinfo->desc = 0; - } - } - jas_image_numfmts = 0; -} - -int jas_image_addfmt(int id, const char *name, const char *ext, + int i; + jas_image_fmtinfo_t *fmtinfo; + for (i = 0; i < jas_image_numfmts; ++i) { + fmtinfo = &jas_image_fmtinfos[i]; + if (fmtinfo->name) { + jas_free(fmtinfo->name); + fmtinfo->name = 0; + } + if (fmtinfo->ext) { + jas_free(fmtinfo->ext); + fmtinfo->ext = 0; + } + if (fmtinfo->desc) { + jas_free(fmtinfo->desc); + fmtinfo->desc = 0; + } + } + jas_image_numfmts = 0; +} + +int jas_image_addfmt(int id, const char *name, const char *ext, const char *desc, jas_image_fmtops_t *ops) { - jas_image_fmtinfo_t *fmtinfo; - assert(id >= 0 && name && ext && ops); - if (jas_image_numfmts >= JAS_IMAGE_MAXFMTS) { - return -1; - } - fmtinfo = &jas_image_fmtinfos[jas_image_numfmts]; - fmtinfo->id = id; - if (!(fmtinfo->name = jas_strdup(name))) { - return -1; - } - if (!(fmtinfo->ext = jas_strdup(ext))) { - jas_free(fmtinfo->name); - return -1; - } - if (!(fmtinfo->desc = jas_strdup(desc))) { - jas_free(fmtinfo->name); - jas_free(fmtinfo->ext); - return -1; - } - fmtinfo->ops = *ops; - ++jas_image_numfmts; - return 0; + jas_image_fmtinfo_t *fmtinfo; + assert(id >= 0 && name && ext && ops); + if (jas_image_numfmts >= JAS_IMAGE_MAXFMTS) { + return -1; + } + fmtinfo = &jas_image_fmtinfos[jas_image_numfmts]; + fmtinfo->id = id; + if (!(fmtinfo->name = jas_strdup(name))) { + return -1; + } + if (!(fmtinfo->ext = jas_strdup(ext))) { + jas_free(fmtinfo->name); + return -1; + } + if (!(fmtinfo->desc = jas_strdup(desc))) { + jas_free(fmtinfo->name); + jas_free(fmtinfo->ext); + return -1; + } + fmtinfo->ops = *ops; + ++jas_image_numfmts; + return 0; } int jas_image_strtofmt(char *name) { - jas_image_fmtinfo_t *fmtinfo; - if (!(fmtinfo = jas_image_lookupfmtbyname(name))) { - return -1; - } - return fmtinfo->id; + jas_image_fmtinfo_t *fmtinfo; + if (!(fmtinfo = jas_image_lookupfmtbyname(name))) { + return -1; + } + return fmtinfo->id; } char *jas_image_fmttostr(int fmt) { - jas_image_fmtinfo_t *fmtinfo; - if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) { - return 0; - } - return fmtinfo->name; + jas_image_fmtinfo_t *fmtinfo; + if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) { + return 0; + } + return fmtinfo->name; } int jas_image_getfmt(jas_stream_t *in) { - jas_image_fmtinfo_t *fmtinfo; - int found; - int i; - - /* Check for data in each of the formats we know. */ - found = 0; - for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, - ++fmtinfo) { - if (fmtinfo->ops.validate) { - /* Is the input data valid for this format? */ - if (!(*fmtinfo->ops.validate)(in)) { - found = 1; - break; - } - } - } - return found ? fmtinfo->id : (-1); + jas_image_fmtinfo_t *fmtinfo; + int found; + int i; + + /* Check for data in each of the formats we know. */ + found = 0; + for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, + ++fmtinfo) { + if (fmtinfo->ops.validate) { + /* Is the input data valid for this format? */ + if (!(*fmtinfo->ops.validate)(in)) { + found = 1; + break; + } + } + } + return found ? fmtinfo->id : (-1); } int jas_image_fmtfromname(char *name) { - int i; - char *ext; - jas_image_fmtinfo_t *fmtinfo; - /* Get the file name extension. */ - if (!(ext = strrchr(name, '.'))) { - return -1; - } - ++ext; - /* Try to find a format that uses this extension. */ - for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, - ++fmtinfo) { - /* Do we have a match? */ - if (!strcmp(ext, fmtinfo->ext)) { - return fmtinfo->id; - } - } - return -1; + int i; + char *ext; + jas_image_fmtinfo_t *fmtinfo; + /* Get the file name extension. */ + if (!(ext = strrchr(name, '.'))) { + return -1; + } + ++ext; + /* Try to find a format that uses this extension. */ + for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, + ++fmtinfo) { + /* Do we have a match? */ + if (!strcmp(ext, fmtinfo->ext)) { + return fmtinfo->id; + } + } + return -1; } -/******************************************************************************\ +/*****************************************************************************\ * Miscellaneous operations. -\******************************************************************************/ +\*****************************************************************************/ -uint_fast32_t jas_image_rawsize(jas_image_t *image) -{ - uint_fast32_t rawsize; - uint_fast32_t cmptno; - jas_image_cmpt_t *cmpt; +uint_fast32_t +jas_image_rawsize(jas_image_t * const imageP) { +/*---------------------------------------------------------------------------- + The raw size of the image, i.e. the number of bytes the raster of the image + would take if just represented simply, with no compression. +-----------------------------------------------------------------------------*/ + uint_fast32_t rawsize; + uint_fast32_t cmptno; - rawsize = 0; - for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) { - cmpt = image->cmpts_[cmptno]; - rawsize += (cmpt->width_ * cmpt->height_ * cmpt->prec_ + - 7) / 8; - } - return rawsize; + for (cmptno = 0, rawsize = 0; cmptno < imageP->numcmpts_; ++cmptno) { + jas_image_cmpt_t * const cmptP = imageP->cmpts_[cmptno]; + rawsize += (cmptP->width_ * cmptP->height_ * cmptP->prec_ + 7) / 8; + } + return rawsize; } + + void jas_image_delcmpt(jas_image_t *image, uint_fast16_t cmptno) { - if (cmptno >= image->numcmpts_) { - return; - } - jas_image_cmpt_destroy(image->cmpts_[cmptno]); - if (cmptno < image->numcmpts_) { - memmove(&image->cmpts_[cmptno], &image->cmpts_[cmptno + 1], - (image->numcmpts_ - 1 - cmptno) * sizeof(jas_image_cmpt_t *)); - } - --image->numcmpts_; + if (cmptno >= image->numcmpts_) { + return; + } + jas_image_cmpt_destroy(image->cmpts_[cmptno]); + if (cmptno < image->numcmpts_) { + memmove(&image->cmpts_[cmptno], &image->cmpts_[cmptno + 1], + (image->numcmpts_ - 1 - cmptno) * sizeof(jas_image_cmpt_t *)); + } + --image->numcmpts_; - jas_image_setbbox(image); + jas_image_setbbox(image); } int jas_image_addcmpt(jas_image_t *image, uint_fast16_t cmptno, jas_image_cmptparm_t *cmptparm) { - jas_image_cmpt_t *newcmpt; - assert(cmptno <= image->numcmpts_); - if (image->numcmpts_ >= image->maxcmpts_) { - if (jas_image_growcmpts(image, image->maxcmpts_ + 128)) { - return -1; - } - } - if (!(newcmpt = jas_image_cmpt_create(cmptparm->tlx, - cmptparm->tly, cmptparm->hstep, cmptparm->vstep, - cmptparm->width, cmptparm->height, cmptparm->prec, - cmptparm->sgnd, 1))) { - return -1; - } - if (cmptno < image->numcmpts_) { - memmove(&image->cmpts_[cmptno + 1], &image->cmpts_[cmptno], - (image->numcmpts_ - cmptno) * sizeof(jas_image_cmpt_t *)); - } - image->cmpts_[cmptno] = newcmpt; - ++image->numcmpts_; - - jas_image_setbbox(image); - - return 0; + jas_image_cmpt_t *newcmpt; + assert(cmptno <= image->numcmpts_); + if (image->numcmpts_ >= image->maxcmpts_) { + if (jas_image_growcmpts(image, image->maxcmpts_ + 128)) { + return -1; + } + } + if (!(newcmpt = jas_image_cmpt_create(cmptparm->tlx, + cmptparm->tly, cmptparm->hstep, cmptparm->vstep, + cmptparm->width, cmptparm->height, cmptparm->prec, + cmptparm->sgnd, 1))) { + return -1; + } + if (cmptno < image->numcmpts_) { + memmove(&image->cmpts_[cmptno + 1], &image->cmpts_[cmptno], + (image->numcmpts_ - cmptno) * sizeof(jas_image_cmpt_t *)); + } + image->cmpts_[cmptno] = newcmpt; + ++image->numcmpts_; + + jas_image_setbbox(image); + + return 0; } jas_image_fmtinfo_t *jas_image_lookupfmtbyid(int id) { - int i; - jas_image_fmtinfo_t *fmtinfo; + int i; + jas_image_fmtinfo_t *fmtinfo; - for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, ++fmtinfo) { - if (fmtinfo->id == id) { - return fmtinfo; - } - } - return 0; + for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, ++fmtinfo) { + if (fmtinfo->id == id) { + return fmtinfo; + } + } + return 0; } jas_image_fmtinfo_t *jas_image_lookupfmtbyname(const char *name) { - int i; - jas_image_fmtinfo_t *fmtinfo; + int i; + jas_image_fmtinfo_t *fmtinfo; - for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, ++fmtinfo) { - if (!strcmp(fmtinfo->name, name)) { - return fmtinfo; - } - } - return 0; + for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, ++fmtinfo) { + if (!strcmp(fmtinfo->name, name)) { + return fmtinfo; + } + } + return 0; } @@ -780,220 +783,220 @@ jas_image_fmtinfo_t *jas_image_lookupfmtbyname(const char *name) static uint_fast32_t inttobits(jas_seqent_t v, int prec, bool sgnd) { - uint_fast32_t ret; - ret = ((sgnd && v < 0) ? ((1 << prec) + v) : v) & JAS_ONES(prec); - return ret; + uint_fast32_t ret; + ret = ((sgnd && v < 0) ? ((1 << prec) + v) : v) & JAS_ONES(prec); + return ret; } static jas_seqent_t bitstoint(uint_fast32_t v, int prec, bool sgnd) { - jas_seqent_t ret; - v &= JAS_ONES(prec); - ret = (sgnd && (v & (1 << (prec - 1)))) ? (v - (1 << prec)) : v; - return ret; + jas_seqent_t ret; + v &= JAS_ONES(prec); + ret = (sgnd && (v & (1 << (prec - 1)))) ? (v - (1 << prec)) : v; + return ret; } static void jas_image_setbbox(jas_image_t *image) { - jas_image_cmpt_t *cmpt; - int cmptno; - int_fast32_t x; - int_fast32_t y; - - if (image->numcmpts_ > 0) { - /* Determine the bounding box for all of the components on the - reference grid (i.e., the image area) */ - cmpt = image->cmpts_[0]; - image->tlx_ = cmpt->tlx_; - image->tly_ = cmpt->tly_; - image->brx_ = cmpt->tlx_ + cmpt->hstep_ * (cmpt->width_ - 1) + 1; - image->bry_ = cmpt->tly_ + cmpt->vstep_ * (cmpt->height_ - 1) + 1; - for (cmptno = 1; cmptno < image->numcmpts_; ++cmptno) { - cmpt = image->cmpts_[cmptno]; - if (image->tlx_ > cmpt->tlx_) { - image->tlx_ = cmpt->tlx_; - } - if (image->tly_ > cmpt->tly_) { - image->tly_ = cmpt->tly_; - } - x = cmpt->tlx_ + cmpt->hstep_ * (cmpt->width_ - 1) + 1; - if (image->brx_ < x) { - image->brx_ = x; - } - y = cmpt->tly_ + cmpt->vstep_ * (cmpt->height_ - 1) + 1; - if (image->bry_ < y) { - image->bry_ = y; - } - } - } else { - image->tlx_ = 0; - image->tly_ = 0; - image->brx_ = 0; - image->bry_ = 0; - } + jas_image_cmpt_t *cmpt; + int cmptno; + int_fast32_t x; + int_fast32_t y; + + if (image->numcmpts_ > 0) { + /* Determine the bounding box for all of the components on the + reference grid (i.e., the image area) */ + cmpt = image->cmpts_[0]; + image->tlx_ = cmpt->tlx_; + image->tly_ = cmpt->tly_; + image->brx_ = cmpt->tlx_ + cmpt->hstep_ * (cmpt->width_ - 1) + 1; + image->bry_ = cmpt->tly_ + cmpt->vstep_ * (cmpt->height_ - 1) + 1; + for (cmptno = 1; cmptno < image->numcmpts_; ++cmptno) { + cmpt = image->cmpts_[cmptno]; + if (image->tlx_ > cmpt->tlx_) { + image->tlx_ = cmpt->tlx_; + } + if (image->tly_ > cmpt->tly_) { + image->tly_ = cmpt->tly_; + } + x = cmpt->tlx_ + cmpt->hstep_ * (cmpt->width_ - 1) + 1; + if (image->brx_ < x) { + image->brx_ = x; + } + y = cmpt->tly_ + cmpt->vstep_ * (cmpt->height_ - 1) + 1; + if (image->bry_ < y) { + image->bry_ = y; + } + } + } else { + image->tlx_ = 0; + image->tly_ = 0; + image->brx_ = 0; + image->bry_ = 0; + } } static int jas_image_growcmpts(jas_image_t *image, int maxcmpts) { - jas_image_cmpt_t **newcmpts; - int cmptno; + jas_image_cmpt_t **newcmpts; + int cmptno; - newcmpts = (!image->cmpts_) ? jas_malloc(maxcmpts * sizeof(jas_image_cmpt_t *)) : - jas_realloc(image->cmpts_, maxcmpts * sizeof(jas_image_cmpt_t *)); - if (!newcmpts) { - return -1; - } - image->cmpts_ = newcmpts; - image->maxcmpts_ = maxcmpts; - for (cmptno = image->numcmpts_; cmptno < image->maxcmpts_; ++cmptno) { - image->cmpts_[cmptno] = 0; - } - return 0; + newcmpts = (!image->cmpts_) ? jas_malloc(maxcmpts * sizeof(jas_image_cmpt_t *)) : + jas_realloc(image->cmpts_, maxcmpts * sizeof(jas_image_cmpt_t *)); + if (!newcmpts) { + return -1; + } + image->cmpts_ = newcmpts; + image->maxcmpts_ = maxcmpts; + for (cmptno = image->numcmpts_; cmptno < image->maxcmpts_; ++cmptno) { + image->cmpts_[cmptno] = 0; + } + return 0; } int jas_image_copycmpt(jas_image_t *dstimage, int dstcmptno, jas_image_t *srcimage, int srccmptno) { - jas_image_cmpt_t *newcmpt; - if (dstimage->numcmpts_ >= dstimage->maxcmpts_) { - if (jas_image_growcmpts(dstimage, dstimage->maxcmpts_ + 128)) { - return -1; - } - } - if (!(newcmpt = jas_image_cmpt_copy(srcimage->cmpts_[srccmptno]))) { - return -1; - } - if (dstcmptno < dstimage->numcmpts_) { - memmove(&dstimage->cmpts_[dstcmptno + 1], &dstimage->cmpts_[dstcmptno], - (dstimage->numcmpts_ - dstcmptno) * sizeof(jas_image_cmpt_t *)); - } - dstimage->cmpts_[dstcmptno] = newcmpt; - ++dstimage->numcmpts_; - - jas_image_setbbox(dstimage); - return 0; + jas_image_cmpt_t *newcmpt; + if (dstimage->numcmpts_ >= dstimage->maxcmpts_) { + if (jas_image_growcmpts(dstimage, dstimage->maxcmpts_ + 128)) { + return -1; + } + } + if (!(newcmpt = jas_image_cmpt_copy(srcimage->cmpts_[srccmptno]))) { + return -1; + } + if (dstcmptno < dstimage->numcmpts_) { + memmove(&dstimage->cmpts_[dstcmptno + 1], &dstimage->cmpts_[dstcmptno], + (dstimage->numcmpts_ - dstcmptno) * sizeof(jas_image_cmpt_t *)); + } + dstimage->cmpts_[dstcmptno] = newcmpt; + ++dstimage->numcmpts_; + + jas_image_setbbox(dstimage); + return 0; } void jas_image_dump(jas_image_t *image, FILE *out) { - int cmptno; - jas_seq2d_t *data; - jas_image_cmpt_t *cmpt; - if (!(data = jas_seq2d_create(0, 0, 1, 1))) { - abort(); - } - for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) { - cmpt = image->cmpts_[cmptno]; - fprintf(out, "prec=%d sgnd=%d\n", (int)cmpt->prec_, cmpt->sgnd_); - if (jas_image_readcmpt(image, cmptno, 0, 0, 1, 1, data)) { - abort(); - } - fprintf(out, "tlsample %ld\n", (long) jas_seq2d_get(data, 0, 0)); - } - jas_seq2d_destroy(data); + int cmptno; + jas_seq2d_t *data; + jas_image_cmpt_t *cmpt; + if (!(data = jas_seq2d_create(0, 0, 1, 1))) { + abort(); + } + for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) { + cmpt = image->cmpts_[cmptno]; + fprintf(out, "prec=%d sgnd=%d\n", (int)cmpt->prec_, cmpt->sgnd_); + if (jas_image_readcmpt(image, cmptno, 0, 0, 1, 1, data)) { + abort(); + } + fprintf(out, "tlsample %ld\n", (long) jas_seq2d_get(data, 0, 0)); + } + jas_seq2d_destroy(data); } int jas_image_depalettize(jas_image_t *image, int cmptno, int numlutents, int_fast32_t *lutents, int dtype, int newcmptno) { - jas_image_cmptparm_t cmptparms; - int_fast32_t v; - int i; - int j; - jas_image_cmpt_t *cmpt; - - cmpt = image->cmpts_[cmptno]; - cmptparms.tlx = cmpt->tlx_; - cmptparms.tly = cmpt->tly_; - cmptparms.hstep = cmpt->hstep_; - cmptparms.vstep = cmpt->vstep_; - cmptparms.width = cmpt->width_; - cmptparms.height = cmpt->height_; - cmptparms.prec = JAS_IMAGE_CDT_GETPREC(dtype); - cmptparms.sgnd = JAS_IMAGE_CDT_GETSGND(dtype); - - if (numlutents < 1) { - return -1; - } - - if (jas_image_addcmpt(image, newcmptno, &cmptparms)) { - return -1; - } - if (newcmptno <= cmptno) { - ++cmptno; - cmpt = image->cmpts_[cmptno]; - } - - for (j = 0; j < cmpt->height_; ++j) { - for (i = 0; i < cmpt->width_; ++i) { - v = jas_image_readcmptsample(image, cmptno, i, j); - if (v < 0) { - v = 0; - } else if (v >= numlutents) { - v = numlutents - 1; - } - jas_image_writecmptsample(image, newcmptno, i, j, - lutents[v]); - } - } - return 0; + jas_image_cmptparm_t cmptparms; + int_fast32_t v; + int i; + int j; + jas_image_cmpt_t *cmpt; + + cmpt = image->cmpts_[cmptno]; + cmptparms.tlx = cmpt->tlx_; + cmptparms.tly = cmpt->tly_; + cmptparms.hstep = cmpt->hstep_; + cmptparms.vstep = cmpt->vstep_; + cmptparms.width = cmpt->width_; + cmptparms.height = cmpt->height_; + cmptparms.prec = JAS_IMAGE_CDT_GETPREC(dtype); + cmptparms.sgnd = JAS_IMAGE_CDT_GETSGND(dtype); + + if (numlutents < 1) { + return -1; + } + + if (jas_image_addcmpt(image, newcmptno, &cmptparms)) { + return -1; + } + if (newcmptno <= cmptno) { + ++cmptno; + cmpt = image->cmpts_[cmptno]; + } + + for (j = 0; j < cmpt->height_; ++j) { + for (i = 0; i < cmpt->width_; ++i) { + v = jas_image_readcmptsample(image, cmptno, i, j); + if (v < 0) { + v = 0; + } else if (v >= numlutents) { + v = numlutents - 1; + } + jas_image_writecmptsample(image, newcmptno, i, j, + lutents[v]); + } + } + return 0; } int jas_image_readcmptsample(jas_image_t *image, int cmptno, int x, int y) { - jas_image_cmpt_t *cmpt; - uint_fast32_t v; - int k; - int c; + jas_image_cmpt_t *cmpt; + uint_fast32_t v; + int k; + int c; - cmpt = image->cmpts_[cmptno]; + cmpt = image->cmpts_[cmptno]; - if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * y + x) * cmpt->cps_, - SEEK_SET) < 0) { - return -1; - } - v = 0; - for (k = cmpt->cps_; k > 0; --k) { - if ((c = jas_stream_getc(cmpt->stream_)) == EOF) { - return -1; - } - v = (v << 8) | (c & 0xff); - } - return bitstoint(v, cmpt->prec_, cmpt->sgnd_); + if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * y + x) * cmpt->cps_, + SEEK_SET) < 0) { + return -1; + } + v = 0; + for (k = cmpt->cps_; k > 0; --k) { + if ((c = jas_stream_getc(cmpt->stream_)) == EOF) { + return -1; + } + v = (v << 8) | (c & 0xff); + } + return bitstoint(v, cmpt->prec_, cmpt->sgnd_); } void jas_image_writecmptsample(jas_image_t *image, int cmptno, int x, int y, int_fast32_t v) { - jas_image_cmpt_t *cmpt; - uint_fast32_t t; - int k; - int c; + jas_image_cmpt_t *cmpt; + uint_fast32_t t; + int k; + int c; - cmpt = image->cmpts_[cmptno]; + cmpt = image->cmpts_[cmptno]; - if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * y + x) * cmpt->cps_, - SEEK_SET) < 0) { - return; - } - t = inttobits(v, cmpt->prec_, cmpt->sgnd_); - for (k = cmpt->cps_; k > 0; --k) { - c = (t >> (8 * (cmpt->cps_ - 1))) & 0xff; - if (jas_stream_putc(cmpt->stream_, (unsigned char) c) == EOF) { - return; - } - t <<= 8; - } + if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * y + x) * cmpt->cps_, + SEEK_SET) < 0) { + return; + } + t = inttobits(v, cmpt->prec_, cmpt->sgnd_); + for (k = cmpt->cps_; k > 0; --k) { + c = (t >> (8 * (cmpt->cps_ - 1))) & 0xff; + if (jas_stream_putc(cmpt->stream_, (unsigned char) c) == EOF) { + return; + } + t <<= 8; + } } int jas_image_getcmptbytype(jas_image_t *image, int ctype) { - int cmptno; + int cmptno; - for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) { - if (image->cmpts_[cmptno]->type_ == ctype) { - return cmptno; - } - } + for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) { + if (image->cmpts_[cmptno]->type_ == ctype) { + return cmptno; + } + } return -1; } |