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io-vtf.c
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/*
* GdkPixbuf library - VTF image loader
*
* Copyright (C) 2010 Forrest Voight
*
* Authors: Forrest Voight <voights@gmail.com> & Jan Dudek <jd@jandudek.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#define GDK_PIXBUF_ENABLE_BACKEND
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gdk-pixbuf/gdk-pixbuf-io.h>
#include <gdk-pixbuf/gdk-pixbuf-animation.h>
#include <glib/gstdio.h>
#undef GDK_PIXBUF_ENABLE_BACKEND
#define VTF_70_HEADER_SIZE 63
#define VTF_71_HEADER_SIZE 65
#define VTF_73_HEADER_SIZE 72
#define VTF_RESOURCE_HEADER_SIZE 8
typedef struct
{
char signature[4]; // File signature ("VTF\0").
uint32_t version[2]; // version[0].version[1] (currently 7.2).
uint32_t headerSize; // Size of the header struct (16 byte aligned; currently 80 bytes).
uint16_t width; // Width of the largest mipmap in pixels. Must be a power of 2.
uint16_t height; // Height of the largest mipmap in pixels. Must be a power of 2.
uint32_t flags; // VTF flags.
uint16_t frames; // Number of frames, if animated (1 for no animation).
uint16_t firstFrame; // First frame in animation (0 based).
uint8_t padding0[4]; // reflectivity padding (16 byte alignment).
float reflectivity[3]; // reflectivity vector.
uint8_t padding1[4]; // reflectivity padding (8 byte packing).
float bumpmapScale; // Bumpmap scale.
uint32_t highResImageFormat; // High resolution image format.
uint8_t mipmapCount; // Number of mipmaps.
uint32_t lowResImageFormat; // Low resolution image format (always DXT1).
uint8_t lowResImageWidth; // Low resolution image width.
uint8_t lowResImageHeight; // Low resolution image height.
uint16_t depth; // Depth of the largest mipmap in pixels.
// Must be a power of 2. Can be 0 or 1 for a 2D texture (v7.2 only).
uint8_t padding2[3]; // padding
uint32_t resources; // VTF 7.3 resource count
} VtfHeader;
enum
{
IMAGE_FORMAT_NONE = -1,
IMAGE_FORMAT_RGBA8888 = 0,
IMAGE_FORMAT_ABGR8888,
IMAGE_FORMAT_RGB888,
IMAGE_FORMAT_BGR888,
IMAGE_FORMAT_RGB565,
IMAGE_FORMAT_I8,
IMAGE_FORMAT_IA88,
IMAGE_FORMAT_P8,
IMAGE_FORMAT_A8,
IMAGE_FORMAT_RGB888_BLUESCREEN,
IMAGE_FORMAT_BGR888_BLUESCREEN,
IMAGE_FORMAT_ARGB8888,
IMAGE_FORMAT_BGRA8888,
IMAGE_FORMAT_DXT1,
IMAGE_FORMAT_DXT3,
IMAGE_FORMAT_DXT5,
IMAGE_FORMAT_BGRX8888,
IMAGE_FORMAT_BGR565,
IMAGE_FORMAT_BGRX5551,
IMAGE_FORMAT_BGRA4444,
IMAGE_FORMAT_DXT1_ONEBITALPHA,
IMAGE_FORMAT_BGRA5551,
IMAGE_FORMAT_UV88,
IMAGE_FORMAT_UVWQ8888,
IMAGE_FORMAT_RGBA16161616F,
IMAGE_FORMAT_RGBA16161616,
IMAGE_FORMAT_UVLX8888
};
enum
{
// Flags from the *.txt config file
TEXTUREFLAGS_POINTSAMPLE = 0x00000001,
TEXTUREFLAGS_TRILINEAR = 0x00000002,
TEXTUREFLAGS_CLAMPS = 0x00000004,
TEXTUREFLAGS_CLAMPT = 0x00000008,
TEXTUREFLAGS_ANISOTROPIC = 0x00000010,
TEXTUREFLAGS_HINT_DXT5 = 0x00000020,
TEXTUREFLAGS_PWL_CORRECTED = 0x00000040,
TEXTUREFLAGS_NORMAL = 0x00000080,
TEXTUREFLAGS_NOMIP = 0x00000100,
TEXTUREFLAGS_NOLOD = 0x00000200,
TEXTUREFLAGS_ALL_MIPS = 0x00000400,
TEXTUREFLAGS_PROCEDURAL = 0x00000800,
// These are automatically generated by vtex from the texture data.
TEXTUREFLAGS_ONEBITALPHA = 0x00001000,
TEXTUREFLAGS_EIGHTBITALPHA = 0x00002000,
// Newer flags from the *.txt config file
TEXTUREFLAGS_ENVMAP = 0x00004000,
TEXTUREFLAGS_RENDERTARGET = 0x00008000,
TEXTUREFLAGS_DEPTHRENDERTARGET = 0x00010000,
TEXTUREFLAGS_NODEBUGOVERRIDE = 0x00020000,
TEXTUREFLAGS_SINGLECOPY = 0x00040000,
TEXTUREFLAGS_PRE_SRGB = 0x00080000,
TEXTUREFLAGS_UNUSED_00100000 = 0x00100000,
TEXTUREFLAGS_UNUSED_00200000 = 0x00200000,
TEXTUREFLAGS_UNUSED_00400000 = 0x00400000,
TEXTUREFLAGS_NODEPTHBUFFER = 0x00800000,
TEXTUREFLAGS_UNUSED_01000000 = 0x01000000,
TEXTUREFLAGS_CLAMPU = 0x02000000,
TEXTUREFLAGS_VERTEXTEXTURE = 0x04000000,
TEXTUREFLAGS_SSBUMP = 0x08000000,
TEXTUREFLAGS_UNUSED_10000000 = 0x10000000,
TEXTUREFLAGS_BORDER = 0x20000000,
TEXTUREFLAGS_UNUSED_40000000 = 0x40000000,
TEXTUREFLAGS_UNUSED_80000000 = 0x80000000
};
typedef struct
{
GdkPixbufModuleSizeFunc size_func;
GdkPixbufModulePreparedFunc prepared_func;
GdkPixbufModuleUpdatedFunc updated_func;
gpointer user_data;
guchar *buffer;
guint buffer_size;
guint buffer_data_size;
} VtfContext;
static size_t frame_size(uint32_t image_format, uint16_t width, uint16_t height) {
switch (image_format) {
case IMAGE_FORMAT_NONE: return 0;
case IMAGE_FORMAT_RGBA8888: return width * height * 4;
case IMAGE_FORMAT_ABGR8888: return width * height * 4;
case IMAGE_FORMAT_RGB888: return width * height * 3;
case IMAGE_FORMAT_BGR888: return width * height * 3;
case IMAGE_FORMAT_RGB565: return width * height * 2;
case IMAGE_FORMAT_I8: return width * height * 1;
case IMAGE_FORMAT_IA88: return width * height * 2;
// case IMAGE_FORMAT_P8: return TODO;
case IMAGE_FORMAT_A8: return width * height * 1;
// case IMAGE_FORMAT_RGB888_BLUESCREEN: return TODO;
// case IMAGE_FORMAT_BGR888_BLUESCREEN: return TODO;
case IMAGE_FORMAT_ARGB8888: return width * height * 4;
case IMAGE_FORMAT_BGRA8888: return width * height * 4;
case IMAGE_FORMAT_DXT1: return ((width+3)/4) * ((height+3)/4) * 8;
// case IMAGE_FORMAT_DXT3: return TODO;
case IMAGE_FORMAT_DXT5: return ((width+3)/4) * ((height+3)/4) * 16;
// case IMAGE_FORMAT_BGRX8888: return TODO;
// case IMAGE_FORMAT_BGR565: return TODO;
// case IMAGE_FORMAT_BGRX5551: return TODO;
// case IMAGE_FORMAT_BGRA4444: return TODO;
// case IMAGE_FORMAT_DXT1_ONEBITALPHA: return TODO;
// case IMAGE_FORMAT_BGRA5551: return TODO;
// case IMAGE_FORMAT_UV88: return TODO;
// case IMAGE_FORMAT_UVWQ8888: return TODO;
case IMAGE_FORMAT_RGBA16161616F: return width * height * 8;
case IMAGE_FORMAT_RGBA16161616: return width * height * 8;
// case IMAGE_FORMAT_UVLX8888: return TODO;
// not yet supported or illegal value
default: return SIZE_MAX;
}
}
// cube maps have 6 or 7 faces, other maps have only 1
/*
static size_t face_count(const VtfHeader *header) {
return header->flags & TEXTUREFLAGS_ENVMAP ?
(header->firstFrame != 0xffff && (header->version[0] < 7 || (header->version[0] == 7 && header->version[1] < 5)) ? 7 : 6) :
1;
}
*/
static float read_float16(const uint8_t **data) {
union {
uint16_t bits[2];
float fval;
} val;
val.bits[0] = 0;
memcpy(&val.bits[1], *data, 2);
*data += 2;
return val.fval;
}
static uint16_t read_le16(const uint8_t **data) {
uint16_t val = 0;
memcpy(&val, *data, sizeof(val));
*data += sizeof(val);
return val;
}
static gpointer
gdk_pixbuf__vtf_image_begin_load (GdkPixbufModuleSizeFunc size_func,
GdkPixbufModulePreparedFunc prepared_func,
GdkPixbufModuleUpdatedFunc updated_func,
gpointer user_data,
GError **error)
{
VtfContext* context = g_malloc(sizeof(VtfContext));
if (context == NULL) {
g_set_error (
error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
("Not enough memory"));
return NULL;
}
context->size_func = size_func;
context->prepared_func = prepared_func;
context->updated_func = updated_func;
context->user_data = user_data;
context->buffer_size = 1000000;
context->buffer = g_malloc(context->buffer_size);
context->buffer_data_size = 0;
return (gpointer) context;
}
static uint
vtf_mip_size(VtfHeader *header, uint mipLevel, uint depth) {
uint mipWidth = header->width >> mipLevel;
uint mipHeight = header->height >> mipLevel;
uint mipDepth = depth >> mipLevel;
if (mipWidth < 1) mipWidth = 1;
if (mipHeight < 1) mipHeight = 1;
if (mipDepth < 1) mipDepth = 1;
return frame_size(header->highResImageFormat, mipWidth, mipHeight) * mipDepth;
}
static uint
vtf_offset(VtfHeader *header, uint frame, uint face, uint slice, int mipLevel)
{
uint offset = 0;
uint facecount = 1;
for (int i = header->mipmapCount - 1; i > mipLevel; i--)
offset += vtf_mip_size (header, i, header->depth);
offset *= header->frames * facecount;
uint volume_bytes = vtf_mip_size (header, mipLevel, header->depth);
uint slice_bytes = vtf_mip_size (header, mipLevel, 1);
offset += volume_bytes * (frame * facecount + face);
offset += slice_bytes * slice;
return offset;
}
static GdkPixbuf*
gdk_pixbuf__vtf_load_frame (VtfHeader *header, VtfContext *context, GError **error, int pos) {
int i, j;
GdkPixbuf* pixbuf;
if(header->highResImageFormat == IMAGE_FORMAT_RGBA8888) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
pixels[stride*i + 4*j + 0] = context->buffer[pos++];
pixels[stride*i + 4*j + 1] = context->buffer[pos++];
pixels[stride*i + 4*j + 2] = context->buffer[pos++];
pixels[stride*i + 4*j + 3] = context->buffer[pos++];
}
} else if(header->highResImageFormat == IMAGE_FORMAT_ABGR8888) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
pixels[stride*i + 4*j + 3] = context->buffer[pos++];
pixels[stride*i + 4*j + 2] = context->buffer[pos++];
pixels[stride*i + 4*j + 1] = context->buffer[pos++];
pixels[stride*i + 4*j + 0] = context->buffer[pos++];
}
} else if(header->highResImageFormat == IMAGE_FORMAT_RGB888) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
pixels[stride*i + 3*j + 0] = context->buffer[pos++];
pixels[stride*i + 3*j + 1] = context->buffer[pos++];
pixels[stride*i + 3*j + 2] = context->buffer[pos++];
}
} else if(header->highResImageFormat == IMAGE_FORMAT_BGR888) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
pixels[stride*i + 3*j + 2] = context->buffer[pos++];
pixels[stride*i + 3*j + 1] = context->buffer[pos++];
pixels[stride*i + 3*j + 0] = context->buffer[pos++];
}
} else if(header->highResImageFormat == IMAGE_FORMAT_RGB565) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
uint16_t c0 = context->buffer[pos++];
c0 |= context->buffer[pos++] << 8;
uint16_t r, g, b;
r = (c0 >> 11) & 31;
r = (r << 3) | (r >> 5);
g = (c0 >> 5) & 63;
g = (g << 2) | (g >> 6);
b = (c0 >> 0) & 31;
b = (b << 3) | (b >> 5);
pixels[stride*i + 3*j + 0] = r;
pixels[stride*i + 3*j + 1] = g;
pixels[stride*i + 3*j + 2] = b;
}
} else if(header->highResImageFormat == IMAGE_FORMAT_I8) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
uint8_t v = context->buffer[pos++];
pixels[stride*i + 3*j + 0] = v;
pixels[stride*i + 3*j + 1] = v;
pixels[stride*i + 3*j + 2] = v;
}
} else if(header->highResImageFormat == IMAGE_FORMAT_IA88) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
uint8_t v = context->buffer[pos++];
pixels[stride*i + 4*j + 0] = v;
pixels[stride*i + 4*j + 1] = v;
pixels[stride*i + 4*j + 2] = v;
pixels[stride*i + 4*j + 3] = context->buffer[pos++];
}
} else if(header->highResImageFormat == IMAGE_FORMAT_A8) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
pixels[stride*i + 4*j + 0] = 255;
pixels[stride*i + 4*j + 1] = 255;
pixels[stride*i + 4*j + 2] = 255;
pixels[stride*i + 4*j + 3] = context->buffer[pos++];
}
} else if(header->highResImageFormat == IMAGE_FORMAT_DXT1) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i+=4) {
for (j = 0; j < header->width; j+=4) {
uint16_t c0 = context->buffer[pos++];
c0 |= context->buffer[pos++] << 8;
uint16_t c1 = context->buffer[pos++];
c1 |= context->buffer[pos++] << 8;
uint16_t r[4], g[4], b[4];
r[0] = (c0 >> 11) & 31;
r[0] = (r[0] << 3) | (r[0] >> 5);
g[0] = (c0 >> 5) & 63;
g[0] = (g[0] << 2) | (g[0] >> 6);
b[0] = (c0 >> 0) & 31;
b[0] = (b[0] << 3) | (b[0] >> 5);
r[1] = (c1 >> 11) & 31;
r[1] = (r[1] << 3) | (r[1] >> 5);
g[1] = (c1 >> 5) & 63;
g[1] = (g[1] << 2) | (g[1] >> 6);
b[1] = (c1 >> 0) & 31;
b[1] = (b[1] << 3) | (b[1] >> 5);
uint16_t a[4];
a[0] = 255;
a[1] = 255;
if(c0 > c1) {
r[2] = (4*r[0] + 2*r[1] + 3)/6;
g[2] = (4*g[0] + 2*g[1] + 3)/6;
b[2] = (4*b[0] + 2*b[1] + 3)/6;
a[2] = 255;
r[3] = (2*r[0] + 4*r[1] + 3)/6;
g[3] = (2*g[0] + 4*g[1] + 3)/6;
b[3] = (2*b[0] + 4*b[1] + 3)/6;
a[3] = 255;
} else {
r[2] = (r[0] + r[1] + 1)/2;
g[2] = (g[0] + g[1] + 1)/2;
b[2] = (b[0] + b[1] + 1)/2;
a[2] = 255;
r[3] = 0;
g[3] = 0;
b[3] = 0;
a[3] = 0;
}
uint32_t sel = context->buffer[pos++];
sel |= context->buffer[pos++] << 8;
sel |= context->buffer[pos++] << 16;
sel |= context->buffer[pos++] << 24;
int ii, jj;
for(ii = 0; ii < 4; ii++)
for(jj = 0; jj < 4; jj++) {
pixels[stride*(i+ii) + 4*(j+jj) + 0] = r[sel & 3];
pixels[stride*(i+ii) + 4*(j+jj) + 1] = g[sel & 3];
pixels[stride*(i+ii) + 4*(j+jj) + 2] = b[sel & 3];
pixels[stride*(i+ii) + 4*(j+jj) + 3] = a[sel & 3];
sel >>= 2;
}
}
}
} else if(header->highResImageFormat == IMAGE_FORMAT_DXT5) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i+=4) {
for (j = 0; j < header->width; j+=4) {
{
uint16_t a[8];
a[0] = context->buffer[pos++];
a[1] = context->buffer[pos++];
if(a[0] > a[1]) {
a[2] = (12*a[0] + 2*a[1] + 7)/14;
a[3] = (10*a[0] + 4*a[1] + 7)/14;
a[4] = (8*a[0] + 6*a[1] + 7)/14;
a[5] = (6*a[0] + 8*a[1] + 7)/14;
a[6] = (4*a[0] + 10*a[1] + 7)/14;
a[7] = (2*a[0] + 12*a[1] + 7)/14;
} else {
a[2] = (8*a[0] + 2*a[1] + 5)/10;
a[3] = (6*a[0] + 4*a[1] + 5)/10;
a[4] = (4*a[0] + 6*a[1] + 5)/10;
a[5] = (2*a[0] + 8*a[1] + 5)/10;
a[6] = 0;
a[7] = 255;
}
uint64_t sel = context->buffer[pos++];
sel |= (uint64_t)context->buffer[pos++] << 8;
sel |= (uint64_t)context->buffer[pos++] << 16;
sel |= (uint64_t)context->buffer[pos++] << 24;
sel |= (uint64_t)context->buffer[pos++] << 32;
sel |= (uint64_t)context->buffer[pos++] << 40;
int ii, jj;
for(ii = 0; ii < 4; ii++)
for(jj = 0; jj < 4; jj++) {
pixels[stride*(i+ii) + 4*(j+jj)+3] = a[sel & 7];
sel >>= 3;
}
}
{
uint16_t c0 = context->buffer[pos++];
c0 |= context->buffer[pos++] << 8;
uint16_t c1 = context->buffer[pos++];
c1 |= context->buffer[pos++] << 8;
uint16_t r[4], g[4], b[4];
r[0] = (c0 >> 11) & 31;
r[0] = (r[0] << 3) | (r[0] >> 5);
g[0] = (c0 >> 5) & 63;
g[0] = (g[0] << 2) | (g[0] >> 6);
b[0] = (c0 >> 0) & 31;
b[0] = (b[0] << 3) | (b[0] >> 5);
r[1] = (c1 >> 11) & 31;
r[1] = (r[1] << 3) | (r[1] >> 5);
g[1] = (c1 >> 5) & 63;
g[1] = (g[1] << 2) | (g[1] >> 6);
b[1] = (c1 >> 0) & 31;
b[1] = (b[1] << 3) | (b[1] >> 5);
r[2] = (4*r[0] + 2*r[1] + 3)/6;
g[2] = (4*g[0] + 2*g[1] + 3)/6;
b[2] = (4*b[0] + 2*b[1] + 3)/6;
r[3] = (2*r[0] + 4*r[1] + 3)/6;
g[3] = (2*g[0] + 4*g[1] + 3)/6;
b[3] = (2*b[0] + 4*b[1] + 3)/6;
uint32_t sel = context->buffer[pos++];
sel |= context->buffer[pos++] << 8;
sel |= context->buffer[pos++] << 16;
sel |= context->buffer[pos++] << 24;
int ii, jj;
for(ii = 0; ii < 4; ii++)
for(jj = 0; jj < 4; jj++) {
pixels[stride*(i+ii) + 4*(j+jj) + 0] = r[sel & 3];
pixels[stride*(i+ii) + 4*(j+jj) + 1] = g[sel & 3];
pixels[stride*(i+ii) + 4*(j+jj) + 2] = b[sel & 3];
sel >>= 2;
}
}
}
}
} else if(header->highResImageFormat == IMAGE_FORMAT_ARGB8888) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
pixels[stride*i + 4*j + 1] = context->buffer[pos++];
pixels[stride*i + 4*j + 2] = context->buffer[pos++];
pixels[stride*i + 4*j + 3] = context->buffer[pos++];
pixels[stride*i + 4*j + 0] = context->buffer[pos++];
}
} else if(header->highResImageFormat == IMAGE_FORMAT_BGRA8888) {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < header->height; i++)
for (j = 0; j < header->width; j++) {
pixels[stride*i + 4*j + 2] = context->buffer[pos++];
pixels[stride*i + 4*j + 1] = context->buffer[pos++];
pixels[stride*i + 4*j + 0] = context->buffer[pos++];
pixels[stride*i + 4*j + 3] = context->buffer[pos++];
}
} else if(header->highResImageFormat == IMAGE_FORMAT_RGBA16161616F) {
// won't accept 16 bit color depth so I have to convert it to 8 bit
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
const uint8_t *hdrdata = context->buffer + pos;
for (i = 0; i < header->height; i++) {
for (j = 0; j < header->width; j++) {
pixels[stride*i + 4*j + 0] = lrintf(read_float16(&hdrdata) * 255);
pixels[stride*i + 4*j + 1] = lrintf(read_float16(&hdrdata) * 255);
pixels[stride*i + 4*j + 2] = lrintf(read_float16(&hdrdata) * 255);
pixels[stride*i + 4*j + 3] = lrintf(read_float16(&hdrdata) * 255);
}
}
} else if(header->highResImageFormat == IMAGE_FORMAT_RGBA16161616) {
// won't accept 16 bit color depth so I have to convert it to 8 bit
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, header->width, header->height);
if (pixbuf == NULL) {
goto pixbufallocerror;
}
uint32_t stride = gdk_pixbuf_get_rowstride(pixbuf);
guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
const uint8_t *hdrdata = context->buffer + pos;
for (i = 0; i < header->height; i++) {
for (j = 0; j < header->width; j++) {
pixels[stride*i + 4*j + 0] = read_le16(&hdrdata) / 257;
pixels[stride*i + 4*j + 1] = read_le16(&hdrdata) / 257;
pixels[stride*i + 4*j + 2] = read_le16(&hdrdata) / 257;
pixels[stride*i + 4*j + 3] = read_le16(&hdrdata) / 257;
pos += 8;
}
}
} else {
goto unsupported;
}
return pixbuf;
pixbufallocerror:
g_set_error (
error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
"Could not allocate pixbuf object");
return NULL;
unsupported:
/*fprintf(stderr,"Unsupported VTF format - version %u.%u, lowres format %u, highres format %u.\n",
header->version[0], header->version[1], header->lowResImageFormat, header->highResImageFormat);*/
g_set_error (
error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
"Can't read this yet.");
return NULL;
}
static gboolean
gdk_pixbuf__vtf_image_stop_load (gpointer context_ptr, GError **error)
{
VtfContext *context = (VtfContext *) context_ptr;
gboolean retval = TRUE;
if (context->buffer_data_size < sizeof(VtfHeader))
goto corrupt;
VtfHeader header;
memcpy(&header, context->buffer, sizeof(header));
if(header.signature[0] != 'V' || header.signature[1] != 'T' || header.signature[2] != 'F' || header.signature[3] != 0 || header.frames == 0)
goto corrupt;
if (header.version[0] < 7 || (header.version[0] == 7 && header.version[1] < 2))
header.depth = 1;
if (header.version[0] < 7 || (header.version[0] == 7 && header.version[1] < 3))
header.resources = 0;
uint fulldata = vtf_offset(&header, 0, 0, 0, -1);
if (context->buffer_data_size < fulldata)
goto corrupt;
uint base = context->buffer_data_size - fulldata;
GdkPixbufSimpleAnim *anim = gdk_pixbuf_simple_anim_new(header.width, header.height, 8);
gdk_pixbuf_simple_anim_set_loop(anim, TRUE);
for (int i=0; i < header.frames; i++) {
GdkPixbuf *pixbuf = gdk_pixbuf__vtf_load_frame(&header, context, error,
base + vtf_offset(&header, i, 0, 0, 0));
if (!pixbuf) {
g_object_unref(anim);
goto end;
}
gdk_pixbuf_simple_anim_add_frame(anim, pixbuf);
if (i == 0)
context->prepared_func(pixbuf, GDK_PIXBUF_ANIMATION(anim), context->user_data);
}
end:
g_free(context->buffer);
g_free(context);
return retval;
corrupt:
g_set_error (
error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
"File corrupt or incomplete");
retval = FALSE;
goto end;
}
static gboolean
gdk_pixbuf__vtf_image_load_increment (gpointer context_ptr,
const guchar *data,
guint size,
GError **error)
{
VtfContext* context = (VtfContext*) context_ptr;
context->buffer_data_size += size;
if(context->buffer_data_size > context->buffer_size) {
while(context->buffer_data_size > context->buffer_size)
context->buffer_size *= 2;
context->buffer = g_realloc(context->buffer, context->buffer_size);
if(context->buffer == NULL) {
g_set_error (
error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
("Not enough memory"));
return FALSE;
}
}
memcpy(context->buffer + context->buffer_data_size - size, data, size);
return TRUE;
}
#ifndef INCLUDE_vtf
#define MODULE_ENTRY(function) G_MODULE_EXPORT void function
#else
#define MODULE_ENTRY(function) void _gdk_pixbuf__vtf_ ## function
#endif
MODULE_ENTRY (fill_vtable) (GdkPixbufModule* module)
{
module->begin_load = gdk_pixbuf__vtf_image_begin_load;
module->stop_load = gdk_pixbuf__vtf_image_stop_load;
module->load_increment = gdk_pixbuf__vtf_image_load_increment;
}
MODULE_ENTRY (fill_info) (GdkPixbufFormat *info)
{
static GdkPixbufModulePattern signature[] = {
{ "VTF\0", NULL, 100 },
{ NULL, NULL, 0 }
};
static gchar * mime_types[] = {
"image/x-vtf",
NULL
};
static gchar * extensions[] = {
"vtf",
NULL
};
info->name = "vtf";
info->signature = signature;
info->description = "Valve Texture format";
info->mime_types = mime_types;
info->extensions = extensions;
info->flags = GDK_PIXBUF_FORMAT_THREADSAFE;
info->flags = 0;
info->license = "LGPL";
}