/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- _gd2GetHeader
- _gd2CreateFromFile
- _gd2ReadChunk
- gdImageCreateFromGd2
- gdImageCreateFromGd2Ptr
- gdImageCreateFromGd2Ctx
- gdImageCreateFromGd2PartPtr
- gdImageCreateFromGd2Part
- gdImageCreateFromGd2PartCtx
- _gd2PutHeader
- _gdImageGd2
- gdImageGd2
- gdImageGd2Ptr
/*
* gd_gd2.c
*
* Implements the I/O and support for the GD2 format.
*
* Changing the definition of GD2_DBG (below) will cause copious messages
* to be displayed while it processes requests.
*
* Designed, Written & Copyright 1999, Philip Warner.
*
*/
#include <stdio.h>
#include <errno.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "gd.h"
#include "gdhelpers.h"
#include <zlib.h>
#define TRUE 1
#define FALSE 0
/* 2.11: not part of the API, as the save routine can figure it out
* from im->trueColor, and the load routine doesn't need to tell
* the end user the saved format. NOTE: adding 2 is assumed
* to result in the correct format value for truecolor!
*/
#define GD2_FMT_TRUECOLOR_RAW 3
#define GD2_FMT_TRUECOLOR_COMPRESSED 4
#define gd2_compressed(fmt) (((fmt) == GD2_FMT_COMPRESSED) || ((fmt) == GD2_FMT_TRUECOLOR_COMPRESSED))
#define gd2_truecolor(fmt) (((fmt) == GD2_FMT_TRUECOLOR_RAW) || ((fmt) == GD2_FMT_TRUECOLOR_COMPRESSED))
/* Use this for commenting out debug-print statements. */
/* Just use the first '#define' to allow all the prints... */
/* #define GD2_DBG(s) (s) */
#define GD2_DBG(s)
typedef struct
{
int offset;
int size;
} t_chunk_info;
extern int _gdGetColors(gdIOCtx * in, gdImagePtr im, int gd2xFlag);
extern void _gdPutColors(gdImagePtr im, gdIOCtx * out);
/* */
/* Read the extra info in the gd2 header. */
/* */
static int _gd2GetHeader(gdIOCtxPtr in, int *sx, int *sy, int *cs, int *vers, int *fmt, int *ncx, int *ncy, t_chunk_info ** chunkIdx)
{
int i;
int ch;
char id[5];
t_chunk_info *cidx;
int sidx;
int nc;
GD2_DBG(php_gd_error("Reading gd2 header info"));
for (i = 0; i < 4; i++) {
ch = gdGetC(in);
if (ch == EOF) {
goto fail1;
}
id[i] = ch;
}
id[4] = 0;
GD2_DBG(php_gd_error("Got file code: %s", id));
/* Equiv. of 'magick'. */
if (strcmp(id, GD2_ID) != 0) {
GD2_DBG(php_gd_error("Not a valid gd2 file"));
goto fail1;
}
/* Version */
if (gdGetWord(vers, in) != 1) {
goto fail1;
}
GD2_DBG(php_gd_error("Version: %d", *vers));
if ((*vers != 1) && (*vers != 2)) {
GD2_DBG(php_gd_error("Bad version: %d", *vers));
goto fail1;
}
/* Image Size */
if (!gdGetWord(sx, in)) {
GD2_DBG(php_gd_error("Could not get x-size"));
goto fail1;
}
if (!gdGetWord(sy, in)) {
GD2_DBG(php_gd_error("Could not get y-size"));
goto fail1;
}
GD2_DBG(php_gd_error("Image is %dx%d", *sx, *sy));
/* Chunk Size (pixels, not bytes!) */
if (gdGetWord(cs, in) != 1) {
goto fail1;
}
GD2_DBG(php_gd_error("ChunkSize: %d", *cs));
if ((*cs < GD2_CHUNKSIZE_MIN) || (*cs > GD2_CHUNKSIZE_MAX)) {
GD2_DBG(php_gd_error("Bad chunk size: %d", *cs));
goto fail1;
}
/* Data Format */
if (gdGetWord(fmt, in) != 1) {
goto fail1;
}
GD2_DBG(php_gd_error("Format: %d", *fmt));
if ((*fmt != GD2_FMT_RAW) && (*fmt != GD2_FMT_COMPRESSED) && (*fmt != GD2_FMT_TRUECOLOR_RAW) && (*fmt != GD2_FMT_TRUECOLOR_COMPRESSED)) {
GD2_DBG(php_gd_error("Bad data format: %d", *fmt));
goto fail1;
}
/* # of chunks wide */
if (gdGetWord(ncx, in) != 1) {
goto fail1;
}
GD2_DBG(php_gd_error("%d Chunks Wide", *ncx));
/* # of chunks high */
if (gdGetWord(ncy, in) != 1) {
goto fail1;
}
GD2_DBG(php_gd_error("%d Chunks vertically", *ncy));
if (gd2_compressed(*fmt)) {
nc = (*ncx) * (*ncy);
GD2_DBG(php_gd_error("Reading %d chunk index entries", nc));
sidx = sizeof(t_chunk_info) * nc;
if (sidx <= 0) {
goto fail1;
}
cidx = gdCalloc(sidx, 1);
for (i = 0; i < nc; i++) {
if (gdGetInt(&cidx[i].offset, in) != 1) {
goto fail1;
}
if (gdGetInt(&cidx[i].size, in) != 1) {
goto fail1;
}
}
*chunkIdx = cidx;
}
GD2_DBG(php_gd_error("gd2 header complete"));
return 1;
fail1:
return 0;
}
static gdImagePtr _gd2CreateFromFile (gdIOCtxPtr in, int *sx, int *sy, int *cs, int *vers, int *fmt, int *ncx, int *ncy, t_chunk_info ** cidx)
{
gdImagePtr im;
if (_gd2GetHeader (in, sx, sy, cs, vers, fmt, ncx, ncy, cidx) != 1) {
GD2_DBG(php_gd_error("Bad GD2 header"));
goto fail1;
}
if (gd2_truecolor(*fmt)) {
im = gdImageCreateTrueColor(*sx, *sy);
} else {
im = gdImageCreate(*sx, *sy);
}
if (im == NULL) {
GD2_DBG(php_gd_error("Could not create gdImage"));
goto fail1;
}
if (!_gdGetColors(in, im, (*vers) == 2)) {
GD2_DBG(php_gd_error("Could not read color palette"));
goto fail2;
}
GD2_DBG(php_gd_error("Image palette completed: %d colours", im->colorsTotal));
return im;
fail2:
gdImageDestroy(im);
return 0;
fail1:
return 0;
}
static int _gd2ReadChunk (int offset, char *compBuf, int compSize, char *chunkBuf, uLongf * chunkLen, gdIOCtx * in)
{
int zerr;
if (gdTell(in) != offset) {
GD2_DBG(php_gd_error("Positioning in file to %d", offset));
gdSeek(in, offset);
} else {
GD2_DBG(php_gd_error("Already Positioned in file to %d", offset));
}
/* Read and uncompress an entire chunk. */
GD2_DBG(php_gd_error("Reading file"));
if (gdGetBuf(compBuf, compSize, in) != compSize) {
return FALSE;
}
GD2_DBG(php_gd_error("Got %d bytes. Uncompressing into buffer of %d bytes", compSize, (int)*chunkLen));
zerr = uncompress((unsigned char *) chunkBuf, chunkLen, (unsigned char *) compBuf, compSize);
if (zerr != Z_OK) {
GD2_DBG(php_gd_error("Error %d from uncompress", zerr));
return FALSE;
}
GD2_DBG(php_gd_error("Got chunk"));
return TRUE;
}
gdImagePtr gdImageCreateFromGd2 (FILE * inFile)
{
gdIOCtx *in = gdNewFileCtx(inFile);
gdImagePtr im;
im = gdImageCreateFromGd2Ctx(in);
in->gd_free(in);
return im;
}
gdImagePtr gdImageCreateFromGd2Ptr (int size, void *data)
{
gdImagePtr im;
gdIOCtx *in = gdNewDynamicCtxEx(size, data, 0);
im = gdImageCreateFromGd2Ctx(in);
in->gd_free(in);
return im;
}
gdImagePtr gdImageCreateFromGd2Ctx (gdIOCtxPtr in)
{
int sx, sy;
int i;
int ncx, ncy, nc, cs, cx, cy;
int x, y, ylo, yhi, xlo, xhi;
int vers, fmt;
t_chunk_info *chunkIdx = NULL; /* So we can gdFree it with impunity. */
unsigned char *chunkBuf = NULL; /* So we can gdFree it with impunity. */
int chunkNum = 0;
int chunkMax = 0;
uLongf chunkLen;
int chunkPos = 0;
int compMax = 0;
int bytesPerPixel;
char *compBuf = NULL; /* So we can gdFree it with impunity. */
gdImagePtr im;
/* Get the header */
if (!(im = _gd2CreateFromFile(in, &sx, &sy, &cs, &vers, &fmt, &ncx, &ncy, &chunkIdx))) {
return 0;
}
bytesPerPixel = im->trueColor ? 4 : 1;
nc = ncx * ncy;
if (gd2_compressed(fmt)) {
/* Find the maximum compressed chunk size. */
compMax = 0;
for (i = 0; (i < nc); i++) {
if (chunkIdx[i].size > compMax) {
compMax = chunkIdx[i].size;
}
}
compMax++;
/* Allocate buffers */
chunkMax = cs * bytesPerPixel * cs;
if (chunkMax <= 0) {
return 0;
}
chunkBuf = gdCalloc(chunkMax, 1);
compBuf = gdCalloc(compMax, 1);
GD2_DBG(php_gd_error("Largest compressed chunk is %d bytes", compMax));
}
/* Read the data... */
for (cy = 0; (cy < ncy); cy++) {
for (cx = 0; (cx < ncx); cx++) {
ylo = cy * cs;
yhi = ylo + cs;
if (yhi > im->sy) {
yhi = im->sy;
}
GD2_DBG(php_gd_error("Processing Chunk %d (%d, %d), y from %d to %d", chunkNum, cx, cy, ylo, yhi));
if (gd2_compressed(fmt)) {
chunkLen = chunkMax;
if (!_gd2ReadChunk(chunkIdx[chunkNum].offset, compBuf, chunkIdx[chunkNum].size, (char *) chunkBuf, &chunkLen, in)) {
GD2_DBG(php_gd_error("Error reading comproessed chunk"));
goto fail2;
}
chunkPos = 0;
}
for (y = ylo; (y < yhi); y++) {
xlo = cx * cs;
xhi = xlo + cs;
if (xhi > im->sx) {
xhi = im->sx;
}
if (!gd2_compressed(fmt)) {
for (x = xlo; x < xhi; x++) {
if (im->trueColor) {
if (!gdGetInt(&im->tpixels[y][x], in)) {
im->tpixels[y][x] = 0;
}
} else {
int ch;
if (!gdGetByte(&ch, in)) {
ch = 0;
}
im->pixels[y][x] = ch;
}
}
} else {
for (x = xlo; x < xhi; x++) {
if (im->trueColor) {
/* 2.0.1: work around a gcc bug by being verbose. TBB */
int a = chunkBuf[chunkPos++] << 24;
int r = chunkBuf[chunkPos++] << 16;
int g = chunkBuf[chunkPos++] << 8;
int b = chunkBuf[chunkPos++];
im->tpixels[y][x] = a + r + g + b;
} else {
im->pixels[y][x] = chunkBuf[chunkPos++];
}
}
}
}
chunkNum++;
}
}
GD2_DBG(php_gd_error("Freeing memory"));
if (chunkBuf) {
gdFree(chunkBuf);
}
if (compBuf) {
gdFree(compBuf);
}
if (chunkIdx) {
gdFree(chunkIdx);
}
GD2_DBG(php_gd_error("Done"));
return im;
fail2:
gdImageDestroy(im);
if (chunkBuf) {
gdFree(chunkBuf);
}
if (compBuf) {
gdFree(compBuf);
}
if (chunkIdx) {
gdFree(chunkIdx);
}
return 0;
}
gdImagePtr gdImageCreateFromGd2PartPtr (int size, void *data, int srcx, int srcy, int w, int h)
{
gdImagePtr im;
gdIOCtx *in = gdNewDynamicCtxEx(size, data, 0);
im = gdImageCreateFromGd2PartCtx(in, srcx, srcy, w, h);
in->gd_free(in);
return im;
}
gdImagePtr gdImageCreateFromGd2Part (FILE * inFile, int srcx, int srcy, int w, int h)
{
gdImagePtr im;
gdIOCtx *in = gdNewFileCtx(inFile);
im = gdImageCreateFromGd2PartCtx(in, srcx, srcy, w, h);
in->gd_free(in);
return im;
}
gdImagePtr gdImageCreateFromGd2PartCtx (gdIOCtx * in, int srcx, int srcy, int w, int h)
{
int scx, scy, ecx, ecy, fsx, fsy;
int nc, ncx, ncy, cs, cx, cy;
int x, y, ylo, yhi, xlo, xhi;
int dstart, dpos;
int i;
/* 2.0.12: unsigned is correct; fixes problems with color munging. Thanks to Steven Brown. */
unsigned int ch;
int vers, fmt;
t_chunk_info *chunkIdx = NULL;
unsigned char *chunkBuf = NULL;
int chunkNum;
int chunkMax = 0;
uLongf chunkLen;
int chunkPos = 0;
int compMax;
char *compBuf = NULL;
gdImagePtr im;
if (w<1 || h <1) {
return 0;
}
/* The next few lines are basically copied from gd2CreateFromFile
* we change the file size, so don't want to use the code directly.
* but we do need to know the file size.
*/
if (_gd2GetHeader(in, &fsx, &fsy, &cs, &vers, &fmt, &ncx, &ncy, &chunkIdx) != 1) {
goto fail1;
}
GD2_DBG(php_gd_error("File size is %dx%d", fsx, fsy));
/* This is the difference - make a file based on size of chunks. */
if (gd2_truecolor(fmt)) {
im = gdImageCreateTrueColor(w, h);
} else {
im = gdImageCreate(w, h);
}
if (im == NULL) {
goto fail1;
}
if (!_gdGetColors(in, im, vers == 2)) {
goto fail2;
}
GD2_DBG(php_gd_error("Image palette completed: %d colours", im->colorsTotal));
/* Process the header info */
nc = ncx * ncy;
if (gd2_compressed(fmt)) {
/* Find the maximum compressed chunk size. */
compMax = 0;
for (i = 0; (i < nc); i++) {
if (chunkIdx[i].size > compMax) {
compMax = chunkIdx[i].size;
}
}
compMax++;
if (im->trueColor) {
chunkMax = cs * cs * 4;
} else {
chunkMax = cs * cs;
}
if (chunkMax <= 0) {
goto fail2;
}
chunkBuf = gdCalloc(chunkMax, 1);
compBuf = gdCalloc(compMax, 1);
}
/* Work out start/end chunks */
scx = srcx / cs;
scy = srcy / cs;
if (scx < 0) {
scx = 0;
}
if (scy < 0) {
scy = 0;
}
ecx = (srcx + w) / cs;
ecy = (srcy + h) / cs;
if (ecx >= ncx) {
ecx = ncx - 1;
}
if (ecy >= ncy) {
ecy = ncy - 1;
}
/* Remember file position of image data. */
dstart = gdTell(in);
GD2_DBG(php_gd_error("Data starts at %d", dstart));
/* Loop through the chunks. */
for (cy = scy; (cy <= ecy); cy++) {
ylo = cy * cs;
yhi = ylo + cs;
if (yhi > fsy) {
yhi = fsy;
}
for (cx = scx; cx <= ecx; cx++) {
xlo = cx * cs;
xhi = xlo + cs;
if (xhi > fsx) {
xhi = fsx;
}
GD2_DBG(php_gd_error("Processing Chunk (%d, %d), from %d to %d", cx, cy, ylo, yhi));
if (!gd2_compressed(fmt)) {
GD2_DBG(php_gd_error("Using raw format data"));
if (im->trueColor) {
dpos = (cy * (cs * fsx) * 4 + cx * cs * (yhi - ylo) * 4) + dstart;
} else {
dpos = cy * (cs * fsx) + cx * cs * (yhi - ylo) + dstart;
}
/* gd 2.0.11: gdSeek returns TRUE on success, not 0. Longstanding bug. 01/16/03 */
if (!gdSeek(in, dpos)) {
php_gd_error_ex(E_WARNING, "Error from seek: %d", errno);
goto fail2;
}
GD2_DBG(php_gd_error("Reading (%d, %d) from position %d", cx, cy, dpos - dstart));
} else {
chunkNum = cx + cy * ncx;
chunkLen = chunkMax;
if (!_gd2ReadChunk (chunkIdx[chunkNum].offset, compBuf, chunkIdx[chunkNum].size, (char *)chunkBuf, &chunkLen, in)) {
php_gd_error("Error reading comproessed chunk");
goto fail2;
}
chunkPos = 0;
GD2_DBG(php_gd_error("Reading (%d, %d) from chunk %d", cx, cy, chunkNum));
}
GD2_DBG(php_gd_error(" into (%d, %d) - (%d, %d)", xlo, ylo, xhi, yhi));
for (y = ylo; (y < yhi); y++) {
for (x = xlo; x < xhi; x++) {
if (!gd2_compressed(fmt)) {
if (im->trueColor) {
if (!gdGetInt((int *)&ch, in)) {
ch = 0;
}
} else {
ch = gdGetC(in);
if ((int)ch == EOF) {
ch = 0;
}
}
} else {
if (im->trueColor) {
ch = chunkBuf[chunkPos++];
ch = (ch << 8) + chunkBuf[chunkPos++];
ch = (ch << 8) + chunkBuf[chunkPos++];
ch = (ch << 8) + chunkBuf[chunkPos++];
} else {
ch = chunkBuf[chunkPos++];
}
}
/* Only use a point that is in the image. */
if ((x >= srcx) && (x < (srcx + w)) && (x < fsx) && (x >= 0) && (y >= srcy) && (y < (srcy + h)) && (y < fsy) && (y >= 0)) {
if (im->trueColor) {
im->tpixels[y - srcy][x - srcx] = ch;
} else {
im->pixels[y - srcy][x - srcx] = ch;
}
}
}
}
}
}
if (chunkBuf) {
gdFree(chunkBuf);
}
if (compBuf) {
gdFree(compBuf);
}
if (chunkIdx) {
gdFree(chunkIdx);
}
return im;
fail2:
gdImageDestroy(im);
fail1:
if (chunkBuf) {
gdFree(chunkBuf);
}
if (compBuf) {
gdFree(compBuf);
}
if (chunkIdx) {
gdFree(chunkIdx);
}
return 0;
}
static void _gd2PutHeader (gdImagePtr im, gdIOCtx * out, int cs, int fmt, int cx, int cy)
{
int i;
/* Send the gd2 id, to verify file format. */
for (i = 0; i < 4; i++) {
gdPutC((unsigned char) (GD2_ID[i]), out);
}
/* We put the version info first, so future versions can easily change header info. */
gdPutWord(GD2_VERS, out);
gdPutWord(im->sx, out);
gdPutWord(im->sy, out);
gdPutWord(cs, out);
gdPutWord(fmt, out);
gdPutWord(cx, out);
gdPutWord(cy, out);
}
static void _gdImageGd2 (gdImagePtr im, gdIOCtx * out, int cs, int fmt)
{
int ncx, ncy, cx, cy;
int x, y, ylo, yhi, xlo, xhi;
int chunkLen;
int chunkNum = 0;
char *chunkData = NULL; /* So we can gdFree it with impunity. */
char *compData = NULL; /* So we can gdFree it with impunity. */
uLongf compLen;
int idxPos = 0;
int idxSize;
t_chunk_info *chunkIdx = NULL; /* So we can gdFree it with impunity. */
int posSave;
int bytesPerPixel = im->trueColor ? 4 : 1;
int compMax = 0;
/* Force fmt to a valid value since we don't return anything. */
if ((fmt != GD2_FMT_RAW) && (fmt != GD2_FMT_COMPRESSED)) {
fmt = im->trueColor ? GD2_FMT_TRUECOLOR_COMPRESSED : GD2_FMT_COMPRESSED;
}
if (im->trueColor) {
fmt += 2;
}
/* Make sure chunk size is valid. These are arbitrary values; 64 because it seems
* a little silly to expect performance improvements on a 64x64 bit scale, and
* 4096 because we buffer one chunk, and a 16MB buffer seems a little large - it may be
* OK for one user, but for another to read it, they require the buffer.
*/
if (cs == 0) {
cs = GD2_CHUNKSIZE;
} else if (cs < GD2_CHUNKSIZE_MIN) {
cs = GD2_CHUNKSIZE_MIN;
} else if (cs > GD2_CHUNKSIZE_MAX) {
cs = GD2_CHUNKSIZE_MAX;
}
/* Work out number of chunks. */
ncx = im->sx / cs + 1;
ncy = im->sy / cs + 1;
/* Write the standard header. */
_gd2PutHeader (im, out, cs, fmt, ncx, ncy);
if (gd2_compressed(fmt)) {
/* Work out size of buffer for compressed data, If CHUNKSIZE is large,
* then these will be large!
*/
/* The zlib notes say output buffer size should be (input size) * 1.01 * 12
* - we'll use 1.02 to be paranoid.
*/
compMax = (int)(cs * bytesPerPixel * cs * 1.02f) + 12;
/* Allocate the buffers. */
chunkData = safe_emalloc(cs * bytesPerPixel, cs, 0);
memset(chunkData, 0, cs * bytesPerPixel * cs);
if (compMax <= 0) {
goto fail;
}
compData = gdCalloc(compMax, 1);
/* Save the file position of chunk index, and allocate enough space for
* each chunk_info block .
*/
idxPos = gdTell(out);
idxSize = ncx * ncy * sizeof(t_chunk_info);
GD2_DBG(php_gd_error("Index size is %d", idxSize));
gdSeek(out, idxPos + idxSize);
chunkIdx = safe_emalloc(idxSize, sizeof(t_chunk_info), 0);
memset(chunkIdx, 0, idxSize * sizeof(t_chunk_info));
}
_gdPutColors (im, out);
GD2_DBG(php_gd_error("Size: %dx%d", im->sx, im->sy));
GD2_DBG(php_gd_error("Chunks: %dx%d", ncx, ncy));
for (cy = 0; (cy < ncy); cy++) {
for (cx = 0; (cx < ncx); cx++) {
ylo = cy * cs;
yhi = ylo + cs;
if (yhi > im->sy) {
yhi = im->sy;
}
GD2_DBG(php_gd_error("Processing Chunk (%dx%d), y from %d to %d", cx, cy, ylo, yhi));
chunkLen = 0;
for (y = ylo; (y < yhi); y++) {
GD2_DBG(php_gd_error("y=%d: ",y));
xlo = cx * cs;
xhi = xlo + cs;
if (xhi > im->sx) {
xhi = im->sx;
}
if (gd2_compressed(fmt)) {
for (x = xlo; x < xhi; x++) {
GD2_DBG(php_gd_error("%d...",x));
if (im->trueColor) {
int p = im->tpixels[y][x];
chunkData[chunkLen++] = gdTrueColorGetAlpha(p);
chunkData[chunkLen++] = gdTrueColorGetRed(p);
chunkData[chunkLen++] = gdTrueColorGetGreen(p);
chunkData[chunkLen++] = gdTrueColorGetBlue(p);
} else {
chunkData[chunkLen++] = im->pixels[y][x];
}
}
} else {
for (x = xlo; x < xhi; x++) {
GD2_DBG(php_gd_error("%d, ",x));
if (im->trueColor) {
gdPutInt(im->tpixels[y][x], out);
} else {
gdPutC((unsigned char) im->pixels[y][x], out);
}
}
}
GD2_DBG(php_gd_error("y=%d done.",y));
}
if (gd2_compressed(fmt)) {
compLen = compMax;
if (compress((unsigned char *) &compData[0], &compLen, (unsigned char *) &chunkData[0], chunkLen) != Z_OK) {
php_gd_error("Error from compressing");
} else {
chunkIdx[chunkNum].offset = gdTell(out);
chunkIdx[chunkNum++].size = compLen;
GD2_DBG(php_gd_error("Chunk %d size %d offset %d", chunkNum, chunkIdx[chunkNum - 1].size, chunkIdx[chunkNum - 1].offset));
if (gdPutBuf (compData, compLen, out) <= 0) {
/* Any alternate suggestions for handling this? */
php_gd_error_ex(E_WARNING, "Error %d on write", errno);
}
}
}
}
}
if (gd2_compressed(fmt)) {
/* Save the position, write the index, restore position (paranoia). */
GD2_DBG(php_gd_error("Seeking %d to write index", idxPos));
posSave = gdTell(out);
gdSeek(out, idxPos);
GD2_DBG(php_gd_error("Writing index"));
for (x = 0; x < chunkNum; x++) {
GD2_DBG(php_gd_error("Chunk %d size %d offset %d", x, chunkIdx[x].size, chunkIdx[x].offset));
gdPutInt(chunkIdx[x].offset, out);
gdPutInt(chunkIdx[x].size, out);
}
gdSeek(out, posSave);
}
fail:
GD2_DBG(php_gd_error("Freeing memory"));
if (chunkData) {
gdFree(chunkData);
}
if (compData) {
gdFree(compData);
}
if (chunkIdx) {
gdFree(chunkIdx);
}
GD2_DBG(php_gd_error("Done"));
}
void gdImageGd2 (gdImagePtr im, FILE * outFile, int cs, int fmt)
{
gdIOCtx *out = gdNewFileCtx(outFile);
_gdImageGd2(im, out, cs, fmt);
out->gd_free(out);
}
void *gdImageGd2Ptr (gdImagePtr im, int cs, int fmt, int *size)
{
void *rv;
gdIOCtx *out = gdNewDynamicCtx(2048, NULL);
_gdImageGd2(im, out, cs, fmt);
rv = gdDPExtractData(out, size);
out->gd_free(out);
return rv;
}