static void AttachMetadata(GDALDatasetH hDS, char **papszMetadataOptions)
{
int nCount = CSLCount(papszMetadataOptions);
int i;
for (i = 0; i < nCount; i++)
{
char *pszKey = NULL;
const char *pszValue;
pszValue = CPLParseNameValue(papszMetadataOptions[i], &pszKey);
GDALSetMetadataItem(hDS, pszKey, pszValue, NULL);
CPLFree(pszKey);
}
CSLDestroy(papszMetadataOptions);
}
static void msTransformToGeospatialPDF(imageObj *img, mapObj *map, cairo_renderer *r)
{
/* We need a GDAL 1.10 PDF driver at runtime, but as far as the C API is concerned, GDAL 1.9 is */
/* largely sufficient. */
#if defined(USE_GDAL) && defined(GDAL_VERSION_NUM) && GDAL_VERSION_NUM >= 1900
GDALDatasetH hDS = NULL;
const char* pszGEO_ENCODING = NULL;
GDALDriverH hPDFDriver = NULL;
const char* pszVirtualIO = NULL;
int bVirtualIO = FALSE;
char* pszTmpFilename = NULL;
VSILFILE* fp = NULL;
if (map == NULL)
return;
pszGEO_ENCODING = msGetOutputFormatOption(img->format, "GEO_ENCODING", NULL);
if (pszGEO_ENCODING == NULL)
return;
msGDALInitialize();
hPDFDriver = GDALGetDriverByName("PDF");
if (hPDFDriver == NULL)
return;
/* When compiled against libpoppler, the PDF driver is VirtualIO capable */
/* but not, when it is compiled against libpodofo. */
pszVirtualIO = GDALGetMetadataItem( hPDFDriver, GDAL_DCAP_VIRTUALIO, NULL );
if (pszVirtualIO)
bVirtualIO = CSLTestBoolean(pszVirtualIO);
if (bVirtualIO)
pszTmpFilename = msTmpFile(map, NULL, "/vsimem/mscairopdf/", "pdf");
else
pszTmpFilename = msTmpFile(map, map->mappath, NULL, "pdf");
/* Copy content of outputStream buffer into file */
fp = VSIFOpenL(pszTmpFilename, "wb");
if (fp == NULL) {
msFree(pszTmpFilename);
return;
}
VSIFWriteL(r->outputStream->data, 1, r->outputStream->size, fp);
VSIFCloseL(fp);
fp = NULL;
hDS = GDALOpen(pszTmpFilename, GA_Update);
if ( hDS != NULL ) {
char* pszWKT = msProjectionObj2OGCWKT( &(map->projection) );
if( pszWKT != NULL ) {
double adfGeoTransform[6];
int i;
/* Add user-specified options */
for( i = 0; i < img->format->numformatoptions; i++ ) {
const char* pszOption = img->format->formatoptions[i];
if( strncasecmp(pszOption,"METADATA_ITEM:",14) == 0 ) {
char* pszKey = NULL;
const char* pszValue = CPLParseNameValue(pszOption + 14,
&pszKey);
if( pszKey != NULL ) {
GDALSetMetadataItem(hDS, pszKey, pszValue, NULL);
CPLFree(pszKey);
}
}
}
/* We need to rescale the geotransform because GDAL will not necessary */
/* open the PDF with the DPI that was used to generate it */
memcpy(adfGeoTransform, map->gt.geotransform, 6 * sizeof(double));
adfGeoTransform[1] = adfGeoTransform[1] * map->width / GDALGetRasterXSize(hDS);
adfGeoTransform[5] = adfGeoTransform[5] * map->height / GDALGetRasterYSize(hDS);
GDALSetGeoTransform(hDS, adfGeoTransform);
GDALSetProjection(hDS, pszWKT);
msFree( pszWKT );
pszWKT = NULL;
CPLSetThreadLocalConfigOption("GDAL_PDF_GEO_ENCODING", pszGEO_ENCODING);
GDALClose(hDS);
hDS = NULL;
CPLSetThreadLocalConfigOption("GDAL_PDF_GEO_ENCODING", NULL);
/* We need to replace the buffer with the content of the GDAL file */
fp = VSIFOpenL(pszTmpFilename, "rb");
if( fp != NULL ) {
int nFileSize;
VSIFSeekL(fp, 0, SEEK_END);
nFileSize = (int)VSIFTellL(fp);
msBufferResize(r->outputStream, nFileSize);
VSIFSeekL(fp, 0, SEEK_SET);
r->outputStream->size = VSIFReadL(r->outputStream->data, 1, nFileSize, fp);
VSIFCloseL(fp);
fp = NULL;
}
}
}
if ( hDS != NULL )
GDALClose(hDS);
VSIUnlink(pszTmpFilename);
msFree(pszTmpFilename);
#endif
}
/* actual raster band export
* returns 0 on success
* -1 on raster data read/write error
* */
int export_band(GDALDatasetH hMEMDS, int band,
const char *name, const char *mapset,
struct Cell_head *cellhead, RASTER_MAP_TYPE maptype,
double nodataval, int suppress_main_colortable)
{
struct Colors sGrassColors;
GDALColorTableH hCT;
int iColor;
int bHaveMinMax;
double dfCellMin;
double dfCellMax;
struct FPRange sRange;
int fd;
int cols = cellhead->cols;
int rows = cellhead->rows;
int ret = 0;
char value[200];
/* Open GRASS raster */
fd = Rast_open_old(name, mapset);
/* Get raster band */
GDALRasterBandH hBand = GDALGetRasterBand(hMEMDS, band);
if (hBand == NULL) {
G_warning(_("Unable to get raster band"));
return -1;
}
/* Get min/max values. */
if (Rast_read_fp_range(name, mapset, &sRange) == -1) {
bHaveMinMax = FALSE;
}
else {
bHaveMinMax = TRUE;
Rast_get_fp_range_min_max(&sRange, &dfCellMin, &dfCellMax);
}
sprintf(value, "GRASS GIS %s", GRASS_VERSION_NUMBER);
GDALSetMetadataItem(hBand, "Generated_with", value, NULL);
/* use default color rules if no color rules are given */
if (Rast_read_colors(name, mapset, &sGrassColors) >= 0) {
int maxcolor, i;
CELL min, max;
char key[200];
int rcount;
Rast_get_c_color_range(&min, &max, &sGrassColors);
if (bHaveMinMax) {
if (max < dfCellMax) {
maxcolor = max;
}
else {
maxcolor = (int)ceil(dfCellMax);
}
if (maxcolor > GRASS_MAX_COLORS) {
maxcolor = GRASS_MAX_COLORS;
G_warning("Too many values, color table cut to %d entries",
maxcolor);
}
}
else {
if (max < GRASS_MAX_COLORS) {
maxcolor = max;
}
else {
maxcolor = GRASS_MAX_COLORS;
G_warning("Too many values, color table set to %d entries",
maxcolor);
}
}
rcount = Rast_colors_count(&sGrassColors);
G_debug(3, "dfCellMin: %f, dfCellMax: %f, maxcolor: %d", dfCellMin,
dfCellMax, maxcolor);
if (!suppress_main_colortable) {
hCT = GDALCreateColorTable(GPI_RGB);
for (iColor = 0; iColor <= maxcolor; iColor++) {
int nRed, nGreen, nBlue;
GDALColorEntry sColor;
if (Rast_get_c_color(&iColor, &nRed, &nGreen, &nBlue,
&sGrassColors)) {
sColor.c1 = nRed;
sColor.c2 = nGreen;
sColor.c3 = nBlue;
sColor.c4 = 255;
G_debug(3,
"Rast_get_c_color: Y, rcount %d, nRed %d, nGreen %d, nBlue %d",
rcount, nRed, nGreen, nBlue);
GDALSetColorEntry(hCT, iColor, &sColor);
}
else {
sColor.c1 = 0;
sColor.c2 = 0;
sColor.c3 = 0;
sColor.c4 = 0;
G_debug(3,
"Rast_get_c_color: N, rcount %d, nRed %d, nGreen %d, nBlue %d",
rcount, nRed, nGreen, nBlue);
GDALSetColorEntry(hCT, iColor, &sColor);
}
}
GDALSetRasterColorTable(hBand, hCT);
}
if (rcount > 0) {
/* Create metadata entries for color table rules */
sprintf(value, "%d", rcount);
GDALSetMetadataItem(hBand, "COLOR_TABLE_RULES_COUNT", value,
NULL);
}
/* Add the rules in reverse order */
/* This can cause a GDAL warning with many rules, something like
* Warning 1: Lost metadata writing to GeoTIFF ... too large to fit in tag. */
for (i = rcount - 1; i >= 0; i--) {
DCELL val1, val2;
unsigned char r1, g1, b1, r2, g2, b2;
Rast_get_fp_color_rule(&val1, &r1, &g1, &b1, &val2, &r2, &g2, &b2,
&sGrassColors, i);
sprintf(key, "COLOR_TABLE_RULE_RGB_%d", rcount - i - 1);
sprintf(value, "%e %e %d %d %d %d %d %d", val1, val2, r1, g1, b1,
r2, g2, b2);
GDALSetMetadataItem(hBand, key, value, NULL);
}
}
/* Create GRASS raster buffer */
void *bufer = Rast_allocate_buf(maptype);
if (bufer == NULL) {
G_warning(_("Unable to allocate buffer for reading raster map"));
return -1;
}
/* the following routine must be kept identical to exact_checks */
/* Copy data form GRASS raster to GDAL raster */
int row, col;
int n_nulls = 0;
/* Better use selected GDAL datatype instead of
* the best match with GRASS raster map types ? */
if (maptype == FCELL_TYPE) {
/* Source datatype understandable by GDAL */
GDALDataType datatype = GDT_Float32;
FCELL fnullval = (FCELL) nodataval;
G_debug(1, "FCELL nodata val: %f", fnullval);
for (row = 0; row < rows; row++) {
Rast_get_row(fd, bufer, row, maptype);
for (col = 0; col < cols; col++) {
if (Rast_is_f_null_value(&((FCELL *) bufer)[col])) {
((FCELL *) bufer)[col] = fnullval;
if (n_nulls == 0) {
GDALSetRasterNoDataValue(hBand, nodataval);
}
n_nulls++;
}
}
if (GDALRasterIO
(hBand, GF_Write, 0, row, cols, 1, bufer, cols, 1, datatype,
0, 0) >= CE_Failure) {
G_warning(_("Unable to write GDAL raster file"));
return -1;
}
G_percent(row + 1, rows, 2);
}
}
else if (maptype == DCELL_TYPE) {
GDALDataType datatype = GDT_Float64;
DCELL dnullval = (DCELL) nodataval;
G_debug(1, "DCELL nodata val: %f", dnullval);
for (row = 0; row < rows; row++) {
Rast_get_row(fd, bufer, row, maptype);
for (col = 0; col < cols; col++) {
if (Rast_is_d_null_value(&((DCELL *) bufer)[col])) {
((DCELL *) bufer)[col] = dnullval;
if (n_nulls == 0) {
GDALSetRasterNoDataValue(hBand, nodataval);
}
n_nulls++;
}
}
if (GDALRasterIO
(hBand, GF_Write, 0, row, cols, 1, bufer, cols, 1, datatype,
0, 0) >= CE_Failure) {
G_warning(_("Unable to write GDAL raster file"));
return -1;
}
G_percent(row + 1, rows, 2);
}
}
else {
GDALDataType datatype = GDT_Int32;
CELL inullval = (CELL) nodataval;
G_debug(1, "CELL nodata val: %d", inullval);
for (row = 0; row < rows; row++) {
Rast_get_row(fd, bufer, row, maptype);
for (col = 0; col < cols; col++) {
if (Rast_is_c_null_value(&((CELL *) bufer)[col])) {
((CELL *) bufer)[col] = inullval;
if (n_nulls == 0) {
GDALSetRasterNoDataValue(hBand, nodataval);
}
n_nulls++;
}
}
if (GDALRasterIO
(hBand, GF_Write, 0, row, cols, 1, bufer, cols, 1, datatype,
0, 0) >= CE_Failure) {
G_warning(_("Unable to write GDAL raster file"));
return -1;
}
G_percent(row + 1, rows, 2);
}
}
Rast_close(fd);
G_free(bufer);
return ret;
}
int msSaveImageGDAL( mapObj *map, imageObj *image, char *filename )
{
int bFileIsTemporary = MS_FALSE;
GDALDatasetH hMemDS, hOutputDS;
GDALDriverH hMemDriver, hOutputDriver;
int nBands = 1;
int iLine;
GByte *pabyAlphaLine = NULL;
char **papszOptions = NULL;
outputFormatObj *format = image->format;
rasterBufferObj rb;
GDALDataType eDataType = GDT_Byte;
int bUseXmp = MS_FALSE;
msGDALInitialize();
memset(&rb,0,sizeof(rasterBufferObj));
#ifdef USE_EXEMPI
if( map != NULL ) {
bUseXmp = msXmpPresent(map);
}
#endif
/* -------------------------------------------------------------------- */
/* Identify the proposed output driver. */
/* -------------------------------------------------------------------- */
msAcquireLock( TLOCK_GDAL );
hOutputDriver = GDALGetDriverByName( format->driver+5 );
if( hOutputDriver == NULL ) {
msReleaseLock( TLOCK_GDAL );
msSetError( MS_MISCERR, "Failed to find %s driver.",
"msSaveImageGDAL()", format->driver+5 );
return MS_FAILURE;
}
/* -------------------------------------------------------------------- */
/* We will need to write the output to a temporary file and */
/* then stream to stdout if no filename is passed. If the */
/* driver supports virtualio then we hold the temporary file in */
/* memory, otherwise we try to put it in a reasonable temporary */
/* file location. */
/* -------------------------------------------------------------------- */
if( filename == NULL ) {
const char *pszExtension = format->extension;
if( pszExtension == NULL )
pszExtension = "img.tmp";
if( bUseXmp == MS_FALSE && GDALGetMetadataItem( hOutputDriver, GDAL_DCAP_VIRTUALIO, NULL )
!= NULL ) {
CleanVSIDir( "/vsimem/msout" );
filename = msTmpFile(map, NULL, "/vsimem/msout/", pszExtension );
}
if( filename == NULL && map != NULL)
filename = msTmpFile(map, map->mappath,NULL,pszExtension);
else if( filename == NULL ) {
filename = msTmpFile(map, NULL, NULL, pszExtension );
}
bFileIsTemporary = MS_TRUE;
}
/* -------------------------------------------------------------------- */
/* Establish the characteristics of our memory, and final */
/* dataset. */
/* -------------------------------------------------------------------- */
if( format->imagemode == MS_IMAGEMODE_RGB ) {
nBands = 3;
assert( MS_RENDERER_PLUGIN(format) && format->vtable->supports_pixel_buffer );
format->vtable->getRasterBufferHandle(image,&rb);
} else if( format->imagemode == MS_IMAGEMODE_RGBA ) {
pabyAlphaLine = (GByte *) calloc(image->width,1);
if (pabyAlphaLine == NULL) {
msReleaseLock( TLOCK_GDAL );
msSetError( MS_MEMERR, "Out of memory allocating %u bytes.\n", "msSaveImageGDAL()", image->width);
return MS_FAILURE;
}
nBands = 4;
assert( MS_RENDERER_PLUGIN(format) && format->vtable->supports_pixel_buffer );
format->vtable->getRasterBufferHandle(image,&rb);
} else if( format->imagemode == MS_IMAGEMODE_INT16 ) {
nBands = format->bands;
eDataType = GDT_Int16;
} else if( format->imagemode == MS_IMAGEMODE_FLOAT32 ) {
nBands = format->bands;
eDataType = GDT_Float32;
} else if( format->imagemode == MS_IMAGEMODE_BYTE ) {
nBands = format->bands;
eDataType = GDT_Byte;
} else {
#ifdef USE_GD
assert( format->imagemode == MS_IMAGEMODE_PC256
&& format->renderer == MS_RENDER_WITH_GD );
#else
{
msReleaseLock( TLOCK_GDAL );
msSetError( MS_MEMERR, "GD not compiled in. This is a bug.", "msSaveImageGDAL()");
return MS_FAILURE;
}
#endif
}
/* -------------------------------------------------------------------- */
/* Create a memory dataset which we can use as a source for a */
/* CreateCopy(). */
/* -------------------------------------------------------------------- */
hMemDriver = GDALGetDriverByName( "MEM" );
if( hMemDriver == NULL ) {
msReleaseLock( TLOCK_GDAL );
msSetError( MS_MISCERR, "Failed to find MEM driver.",
"msSaveImageGDAL()" );
return MS_FAILURE;
}
hMemDS = GDALCreate( hMemDriver, "msSaveImageGDAL_temp",
image->width, image->height, nBands,
eDataType, NULL );
if( hMemDS == NULL ) {
msReleaseLock( TLOCK_GDAL );
msSetError( MS_MISCERR, "Failed to create MEM dataset.",
"msSaveImageGDAL()" );
return MS_FAILURE;
}
/* -------------------------------------------------------------------- */
/* Copy the gd image into the memory dataset. */
/* -------------------------------------------------------------------- */
for( iLine = 0; iLine < image->height; iLine++ ) {
int iBand;
for( iBand = 0; iBand < nBands; iBand++ ) {
GDALRasterBandH hBand = GDALGetRasterBand( hMemDS, iBand+1 );
if( format->imagemode == MS_IMAGEMODE_INT16 ) {
GDALRasterIO( hBand, GF_Write, 0, iLine, image->width, 1,
image->img.raw_16bit + iLine * image->width
+ iBand * image->width * image->height,
image->width, 1, GDT_Int16, 2, 0 );
} else if( format->imagemode == MS_IMAGEMODE_FLOAT32 ) {
GDALRasterIO( hBand, GF_Write, 0, iLine, image->width, 1,
image->img.raw_float + iLine * image->width
+ iBand * image->width * image->height,
image->width, 1, GDT_Float32, 4, 0 );
} else if( format->imagemode == MS_IMAGEMODE_BYTE ) {
GDALRasterIO( hBand, GF_Write, 0, iLine, image->width, 1,
image->img.raw_byte + iLine * image->width
+ iBand * image->width * image->height,
image->width, 1, GDT_Byte, 1, 0 );
}
#ifdef USE_GD
else if(format->renderer == MS_RENDER_WITH_GD) {
gdImagePtr img = (gdImagePtr)image->img.plugin;
GDALRasterIO( hBand, GF_Write, 0, iLine, image->width, 1,
img->pixels[iLine],
image->width, 1, GDT_Byte, 0, 0 );
}
#endif
else {
GByte *pabyData;
unsigned char *pixptr = NULL;
assert( rb.type == MS_BUFFER_BYTE_RGBA );
switch(iBand) {
case 0:
pixptr = rb.data.rgba.r;
break;
case 1:
pixptr = rb.data.rgba.g;
break;
case 2:
pixptr = rb.data.rgba.b;
break;
case 3:
pixptr = rb.data.rgba.a;
break;
}
assert(pixptr);
if( pixptr == NULL ) {
msReleaseLock( TLOCK_GDAL );
msSetError( MS_MISCERR, "Missing RGB or A buffer.\n",
"msSaveImageGDAL()" );
return MS_FAILURE;
}
pabyData = (GByte *)(pixptr + iLine*rb.data.rgba.row_step);
if( rb.data.rgba.a == NULL || iBand == 3 ) {
GDALRasterIO( hBand, GF_Write, 0, iLine, image->width, 1,
pabyData, image->width, 1, GDT_Byte,
rb.data.rgba.pixel_step, 0 );
} else { /* We need to un-pre-multiple RGB by alpha. */
GByte *pabyUPM = (GByte*) malloc(image->width);
GByte *pabyAlpha= (GByte *)(rb.data.rgba.a + iLine*rb.data.rgba.row_step);
int i;
for( i = 0; i < image->width; i++ ) {
int alpha = pabyAlpha[i*rb.data.rgba.pixel_step];
if( alpha == 0 )
pabyUPM[i] = 0;
else {
int result = (pabyData[i*rb.data.rgba.pixel_step] * 255) / alpha;
if( result > 255 )
result = 255;
pabyUPM[i] = result;
}
}
GDALRasterIO( hBand, GF_Write, 0, iLine, image->width, 1,
pabyUPM, image->width, 1, GDT_Byte, 1, 0 );
free( pabyUPM );
}
}
}
}
if( pabyAlphaLine != NULL )
free( pabyAlphaLine );
/* -------------------------------------------------------------------- */
/* Attach the palette if appropriate. */
/* -------------------------------------------------------------------- */
#ifdef USE_GD
if( format->renderer == MS_RENDER_WITH_GD ) {
GDALColorEntry sEntry;
int iColor;
GDALColorTableH hCT;
gdImagePtr img = (gdImagePtr)image->img.plugin;
hCT = GDALCreateColorTable( GPI_RGB );
for( iColor = 0; iColor < img->colorsTotal; iColor++ ) {
sEntry.c1 = img->red[iColor];
sEntry.c2 = img->green[iColor];
sEntry.c3 = img->blue[iColor];
if( iColor == gdImageGetTransparent( img ) )
sEntry.c4 = 0;
else if( iColor == 0
&& gdImageGetTransparent( img ) == -1
&& format->transparent )
sEntry.c4 = 0;
else
sEntry.c4 = 255;
GDALSetColorEntry( hCT, iColor, &sEntry );
}
GDALSetRasterColorTable( GDALGetRasterBand( hMemDS, 1 ), hCT );
GDALDestroyColorTable( hCT );
} else
#endif
if( format->imagemode == MS_IMAGEMODE_RGB ) {
GDALSetRasterColorInterpretation(
GDALGetRasterBand( hMemDS, 1 ), GCI_RedBand );
GDALSetRasterColorInterpretation(
GDALGetRasterBand( hMemDS, 2 ), GCI_GreenBand );
GDALSetRasterColorInterpretation(
GDALGetRasterBand( hMemDS, 3 ), GCI_BlueBand );
} else if( format->imagemode == MS_IMAGEMODE_RGBA ) {
GDALSetRasterColorInterpretation(
GDALGetRasterBand( hMemDS, 1 ), GCI_RedBand );
GDALSetRasterColorInterpretation(
GDALGetRasterBand( hMemDS, 2 ), GCI_GreenBand );
GDALSetRasterColorInterpretation(
GDALGetRasterBand( hMemDS, 3 ), GCI_BlueBand );
GDALSetRasterColorInterpretation(
GDALGetRasterBand( hMemDS, 4 ), GCI_AlphaBand );
}
/* -------------------------------------------------------------------- */
/* Assign the projection and coordinate system to the memory */
/* dataset. */
/* -------------------------------------------------------------------- */
if( map != NULL ) {
char *pszWKT;
GDALSetGeoTransform( hMemDS, map->gt.geotransform );
pszWKT = msProjectionObj2OGCWKT( &(map->projection) );
if( pszWKT != NULL ) {
GDALSetProjection( hMemDS, pszWKT );
msFree( pszWKT );
}
}
/* -------------------------------------------------------------------- */
/* Possibly assign a nodata value. */
/* -------------------------------------------------------------------- */
if( msGetOutputFormatOption(format,"NULLVALUE",NULL) != NULL ) {
int iBand;
const char *nullvalue = msGetOutputFormatOption(format,
"NULLVALUE",NULL);
for( iBand = 0; iBand < nBands; iBand++ ) {
GDALRasterBandH hBand = GDALGetRasterBand( hMemDS, iBand+1 );
GDALSetRasterNoDataValue( hBand, atof(nullvalue) );
}
}
/* -------------------------------------------------------------------- */
/* Try to save resolution in the output file. */
/* -------------------------------------------------------------------- */
if( image->resolution > 0 ) {
char res[30];
sprintf( res, "%lf", image->resolution );
GDALSetMetadataItem( hMemDS, "TIFFTAG_XRESOLUTION", res, NULL );
GDALSetMetadataItem( hMemDS, "TIFFTAG_YRESOLUTION", res, NULL );
GDALSetMetadataItem( hMemDS, "TIFFTAG_RESOLUTIONUNIT", "2", NULL );
}
/* -------------------------------------------------------------------- */
/* Create a disk image in the selected output format from the */
/* memory image. */
/* -------------------------------------------------------------------- */
papszOptions = (char**)calloc(sizeof(char *),(format->numformatoptions+1));
if (papszOptions == NULL) {
msReleaseLock( TLOCK_GDAL );
msSetError( MS_MEMERR, "Out of memory allocating %u bytes.\n", "msSaveImageGDAL()",
(unsigned int)(sizeof(char *)*(format->numformatoptions+1)));
return MS_FAILURE;
}
memcpy( papszOptions, format->formatoptions,
sizeof(char *) * format->numformatoptions );
hOutputDS = GDALCreateCopy( hOutputDriver, filename, hMemDS, FALSE,
papszOptions, NULL, NULL );
free( papszOptions );
if( hOutputDS == NULL ) {
GDALClose( hMemDS );
msReleaseLock( TLOCK_GDAL );
msSetError( MS_MISCERR, "Failed to create output %s file.\n%s",
"msSaveImageGDAL()", format->driver+5,
CPLGetLastErrorMsg() );
return MS_FAILURE;
}
/* closing the memory DS also frees all associated resources. */
GDALClose( hMemDS );
GDALClose( hOutputDS );
msReleaseLock( TLOCK_GDAL );
/* -------------------------------------------------------------------- */
/* Are we writing license info into the image? */
/* If so, add it to the temp file on disk now. */
/* -------------------------------------------------------------------- */
#ifdef USE_EXEMPI
if ( bUseXmp == MS_TRUE ) {
if( msXmpWrite(map, filename) == MS_FAILURE ) {
/* Something bad happened. */
msSetError( MS_MISCERR, "XMP write to %s failed.\n",
"msSaveImageGDAL()", filename);
return MS_FAILURE;
}
}
#endif
/* -------------------------------------------------------------------- */
/* Is this supposed to be a temporary file? If so, stream to */
/* stdout and delete the file. */
/* -------------------------------------------------------------------- */
if( bFileIsTemporary ) {
FILE *fp;
unsigned char block[4000];
int bytes_read;
if( msIO_needBinaryStdout() == MS_FAILURE )
return MS_FAILURE;
/* We aren't sure how far back GDAL exports the VSI*L API, so
we only use it if we suspect we need it. But we do need it if
holding temporary file in memory. */
fp = VSIFOpenL( filename, "rb" );
if( fp == NULL ) {
msSetError( MS_MISCERR,
"Failed to open %s for streaming to stdout.",
"msSaveImageGDAL()", filename );
return MS_FAILURE;
}
while( (bytes_read = VSIFReadL(block, 1, sizeof(block), fp)) > 0 )
msIO_fwrite( block, 1, bytes_read, stdout );
VSIFCloseL( fp );
VSIUnlink( filename );
CleanVSIDir( "/vsimem/msout" );
free( filename );
}
return MS_SUCCESS;
}
