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path: root/source/blender/imbuf/intern/dds/dds_api.cpp
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Diffstat (limited to 'source/blender/imbuf/intern/dds/dds_api.cpp')
-rw-r--r--source/blender/imbuf/intern/dds/dds_api.cpp258
1 files changed, 134 insertions, 124 deletions
diff --git a/source/blender/imbuf/intern/dds/dds_api.cpp b/source/blender/imbuf/intern/dds/dds_api.cpp
index fa88f81b55a..6a76e231e37 100644
--- a/source/blender/imbuf/intern/dds/dds_api.cpp
+++ b/source/blender/imbuf/intern/dds/dds_api.cpp
@@ -18,7 +18,6 @@
* \ingroup imbdds
*/
-
extern "C" {
#include "BLI_utildefines.h"
}
@@ -28,11 +27,11 @@ extern "C" {
#include <Stream.h>
#include <DirectDrawSurface.h>
#include <FlipDXT.h>
-#include <stdio.h> // printf
+#include <stdio.h> // printf
#include <fstream>
-#if defined (WIN32)
-#include "utfconv.h"
+#if defined(WIN32)
+# include "utfconv.h"
#endif
extern "C" {
@@ -47,138 +46,149 @@ extern "C" {
int imb_save_dds(struct ImBuf *ibuf, const char *name, int /*flags*/)
{
- return(0); /* todo: finish this function */
+ return (0); /* todo: finish this function */
- /* check image buffer */
- if (ibuf == 0) return (0);
- if (ibuf->rect == 0) return (0);
+ /* check image buffer */
+ if (ibuf == 0)
+ return (0);
+ if (ibuf->rect == 0)
+ return (0);
- /* open file for writing */
- std::ofstream fildes;
+ /* open file for writing */
+ std::ofstream fildes;
-#if defined (WIN32)
- wchar_t *wname = alloc_utf16_from_8(name, 0);
- fildes.open(wname);
- free(wname);
+#if defined(WIN32)
+ wchar_t *wname = alloc_utf16_from_8(name, 0);
+ fildes.open(wname);
+ free(wname);
#else
- fildes.open(name);
+ fildes.open(name);
#endif
- /* write header */
- fildes << "DDS ";
- fildes.close();
+ /* write header */
+ fildes << "DDS ";
+ fildes.close();
- return(1);
+ return (1);
}
-int imb_is_a_dds(const unsigned char *mem) // note: use at most first 32 bytes
+int imb_is_a_dds(const unsigned char *mem) // note: use at most first 32 bytes
{
- /* heuristic check to see if mem contains a DDS file */
- /* header.fourcc == FOURCC_DDS */
- if ((mem[0] != 'D') || (mem[1] != 'D') || (mem[2] != 'S') || (mem[3] != ' ')) return(0);
- /* header.size == 124 */
- if ((mem[4] != 124) || mem[5] || mem[6] || mem[7]) return(0);
- return(1);
+ /* heuristic check to see if mem contains a DDS file */
+ /* header.fourcc == FOURCC_DDS */
+ if ((mem[0] != 'D') || (mem[1] != 'D') || (mem[2] != 'S') || (mem[3] != ' '))
+ return (0);
+ /* header.size == 124 */
+ if ((mem[4] != 124) || mem[5] || mem[6] || mem[7])
+ return (0);
+ return (1);
}
-struct ImBuf *imb_load_dds(const unsigned char *mem, size_t size, int flags, char colorspace[IM_MAX_SPACE])
+struct ImBuf *imb_load_dds(const unsigned char *mem,
+ size_t size,
+ int flags,
+ char colorspace[IM_MAX_SPACE])
{
- struct ImBuf *ibuf = NULL;
- DirectDrawSurface dds((unsigned char *)mem, size); /* reads header */
- unsigned char bits_per_pixel;
- unsigned int *rect;
- Image img;
- unsigned int numpixels = 0;
- int col;
- unsigned char *cp = (unsigned char *) &col;
- Color32 pixel;
- Color32 *pixels = 0;
-
- /* OCIO_TODO: never was able to save DDS, so can't test loading
- * but profile used to be set to sRGB and can't see rect_float here, so
- * default byte space should work fine
- */
- colorspace_set_default_role(colorspace, IM_MAX_SPACE, COLOR_ROLE_DEFAULT_BYTE);
-
- if (!imb_is_a_dds(mem))
- return (0);
-
- /* check if DDS is valid and supported */
- if (!dds.isValid()) {
- /* no need to print error here, just testing if it is a DDS */
- if (flags & IB_test)
- return (0);
-
- printf("DDS: not valid; header follows\n");
- dds.printInfo();
- return(0);
- }
- if (!dds.isSupported()) {
- printf("DDS: format not supported\n");
- return(0);
- }
- if ((dds.width() > 65535) || (dds.height() > 65535)) {
- printf("DDS: dimensions too large\n");
- return(0);
- }
-
- /* convert DDS into ImBuf */
- dds.mipmap(&img, 0, 0); /* load first face, first mipmap */
- pixels = img.pixels();
- numpixels = dds.width() * dds.height();
- bits_per_pixel = 24;
- if (img.format() == Image::Format_ARGB) {
- /* check that there is effectively an alpha channel */
- for (unsigned int i = 0; i < numpixels; i++) {
- pixel = pixels[i];
- if (pixel.a != 255) {
- bits_per_pixel = 32;
- break;
- }
- }
- }
- ibuf = IMB_allocImBuf(dds.width(), dds.height(), bits_per_pixel, 0);
- if (ibuf == 0) return(0); /* memory allocation failed */
-
- ibuf->ftype = IMB_FTYPE_DDS;
- ibuf->dds_data.fourcc = dds.fourCC();
- ibuf->dds_data.nummipmaps = dds.mipmapCount();
-
- if ((flags & IB_test) == 0) {
- if (!imb_addrectImBuf(ibuf)) return(ibuf);
- if (ibuf->rect == 0) return(ibuf);
-
- rect = ibuf->rect;
- cp[3] = 0xff; /* default alpha if alpha channel is not present */
-
- for (unsigned int i = 0; i < numpixels; i++) {
- pixel = pixels[i];
- cp[0] = pixel.r; /* set R component of col */
- cp[1] = pixel.g; /* set G component of col */
- cp[2] = pixel.b; /* set B component of col */
- if (dds.hasAlpha())
- cp[3] = pixel.a; /* set A component of col */
- rect[i] = col;
- }
-
- if (ibuf->dds_data.fourcc != FOURCC_DDS) {
- ibuf->dds_data.data = (unsigned char *)dds.readData(ibuf->dds_data.size);
-
- /* flip compressed texture */
- if (ibuf->dds_data.data) {
- FlipDXTCImage(dds.width(), dds.height(), dds.mipmapCount(), dds.fourCC(), ibuf->dds_data.data);
- }
- }
- else {
- ibuf->dds_data.data = NULL;
- ibuf->dds_data.size = 0;
- }
-
- /* flip uncompressed texture */
- IMB_flipy(ibuf);
- }
-
- return(ibuf);
+ struct ImBuf *ibuf = NULL;
+ DirectDrawSurface dds((unsigned char *)mem, size); /* reads header */
+ unsigned char bits_per_pixel;
+ unsigned int *rect;
+ Image img;
+ unsigned int numpixels = 0;
+ int col;
+ unsigned char *cp = (unsigned char *)&col;
+ Color32 pixel;
+ Color32 *pixels = 0;
+
+ /* OCIO_TODO: never was able to save DDS, so can't test loading
+ * but profile used to be set to sRGB and can't see rect_float here, so
+ * default byte space should work fine
+ */
+ colorspace_set_default_role(colorspace, IM_MAX_SPACE, COLOR_ROLE_DEFAULT_BYTE);
+
+ if (!imb_is_a_dds(mem))
+ return (0);
+
+ /* check if DDS is valid and supported */
+ if (!dds.isValid()) {
+ /* no need to print error here, just testing if it is a DDS */
+ if (flags & IB_test)
+ return (0);
+
+ printf("DDS: not valid; header follows\n");
+ dds.printInfo();
+ return (0);
+ }
+ if (!dds.isSupported()) {
+ printf("DDS: format not supported\n");
+ return (0);
+ }
+ if ((dds.width() > 65535) || (dds.height() > 65535)) {
+ printf("DDS: dimensions too large\n");
+ return (0);
+ }
+
+ /* convert DDS into ImBuf */
+ dds.mipmap(&img, 0, 0); /* load first face, first mipmap */
+ pixels = img.pixels();
+ numpixels = dds.width() * dds.height();
+ bits_per_pixel = 24;
+ if (img.format() == Image::Format_ARGB) {
+ /* check that there is effectively an alpha channel */
+ for (unsigned int i = 0; i < numpixels; i++) {
+ pixel = pixels[i];
+ if (pixel.a != 255) {
+ bits_per_pixel = 32;
+ break;
+ }
+ }
+ }
+ ibuf = IMB_allocImBuf(dds.width(), dds.height(), bits_per_pixel, 0);
+ if (ibuf == 0)
+ return (0); /* memory allocation failed */
+
+ ibuf->ftype = IMB_FTYPE_DDS;
+ ibuf->dds_data.fourcc = dds.fourCC();
+ ibuf->dds_data.nummipmaps = dds.mipmapCount();
+
+ if ((flags & IB_test) == 0) {
+ if (!imb_addrectImBuf(ibuf))
+ return (ibuf);
+ if (ibuf->rect == 0)
+ return (ibuf);
+
+ rect = ibuf->rect;
+ cp[3] = 0xff; /* default alpha if alpha channel is not present */
+
+ for (unsigned int i = 0; i < numpixels; i++) {
+ pixel = pixels[i];
+ cp[0] = pixel.r; /* set R component of col */
+ cp[1] = pixel.g; /* set G component of col */
+ cp[2] = pixel.b; /* set B component of col */
+ if (dds.hasAlpha())
+ cp[3] = pixel.a; /* set A component of col */
+ rect[i] = col;
+ }
+
+ if (ibuf->dds_data.fourcc != FOURCC_DDS) {
+ ibuf->dds_data.data = (unsigned char *)dds.readData(ibuf->dds_data.size);
+
+ /* flip compressed texture */
+ if (ibuf->dds_data.data) {
+ FlipDXTCImage(
+ dds.width(), dds.height(), dds.mipmapCount(), dds.fourCC(), ibuf->dds_data.data);
+ }
+ }
+ else {
+ ibuf->dds_data.data = NULL;
+ ibuf->dds_data.size = 0;
+ }
+
+ /* flip uncompressed texture */
+ IMB_flipy(ibuf);
+ }
+
+ return (ibuf);
}
-} // extern "C"
+} // extern "C"
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