bool
WebpInput::open (const std::string &name, ImageSpec &spec)
{
m_filename = name;
m_file = Filesystem::fopen(m_filename, "rb");
if (!m_file)
{
error ("Could not open file \"%s\"", m_filename.c_str());
return false;
}
fseek (m_file, 0, SEEK_END);
m_image_size = ftell(m_file);
fseek (m_file, 0, SEEK_SET);
std::vector<uint8_t> encoded_image;
encoded_image.resize(m_image_size, 0);
size_t numRead = fread(&encoded_image[0], sizeof(uint8_t), encoded_image.size(), m_file);
if (numRead != encoded_image.size()) {
error ("Read failure for \"%s\" (expected %d bytes, read %d)",
m_filename, encoded_image.size(), numRead);
close ();
return false;
}
int width = 0, height = 0;
if(!WebPGetInfo(&encoded_image[0], encoded_image.size(), &width, &height))
{
error ("%s is not a WebP image file", m_filename.c_str());
close();
return false;
}
const int CHANNEL_NUM = 4;
m_scanline_size = width * CHANNEL_NUM;
m_spec = ImageSpec(width, height, CHANNEL_NUM, TypeDesc::UINT8);
spec = m_spec;
if (!(m_decoded_image = WebPDecodeRGBA(&encoded_image[0], encoded_image.size(), &m_spec.width, &m_spec.height)))
{
error ("Couldn't decode %s", m_filename.c_str());
close();
return false;
}
return true;
}
void LoadWEBP(const char *filename, unsigned char **pic, int *width, int *height, byte alphaByte)
{
byte *out;
int len;
int stride;
int size;
union
{
byte *b;
void *v;
} fbuffer;
/* read compressed data */
len = ri.FS_ReadFile((char *)filename, &fbuffer.v);
if(!fbuffer.b || len < 0)
{
return;
}
/* validate data and query image size */
if( !WebPGetInfo( fbuffer.b, len, width, height ) )
return;
stride = *width * sizeof( color4ub_t );
size = *height * stride;
out = ri.Z_Malloc( size );
if( !WebPDecodeRGBAInto( fbuffer.b, len, out, size, stride ) ) {
ri.Free( out );
return;
}
ri.FS_FreeFile(fbuffer.v);
*pic = out;
}
SWIGEXPORT jint JNICALL Java_com_google_webp_libwebpJNI_WebPGetInfo(JNIEnv *jenv, jclass jcls, jbyteArray jarg1, jint jarg2, jintArray jarg3, jintArray jarg4) {
jint jresult = 0 ;
uint8_t *arg1 = (uint8_t *) 0 ;
uint32_t arg2 ;
int *arg3 = (int *) 0 ;
int *arg4 = (int *) 0 ;
jbyte *jarr1 ;
int temp3 ;
int temp4 ;
int result;
(void)jenv;
(void)jcls;
if (!SWIG_JavaArrayInSchar(jenv, &jarr1, &arg1, jarg1)) return 0;
arg2 = (uint32_t)jarg2;
{
if (!jarg3) {
SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "array null");
return 0;
}
if ((*jenv)->GetArrayLength(jenv, jarg3) == 0) {
SWIG_JavaThrowException(jenv, SWIG_JavaIndexOutOfBoundsException, "Array must contain at least 1 element");
return 0;
}
arg3 = &temp3;
}
{
if (!jarg4) {
SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "array null");
return 0;
}
if ((*jenv)->GetArrayLength(jenv, jarg4) == 0) {
SWIG_JavaThrowException(jenv, SWIG_JavaIndexOutOfBoundsException, "Array must contain at least 1 element");
return 0;
}
arg4 = &temp4;
}
{
if (arg2 < 0) {
{
SWIG_JavaException(jenv, SWIG_ValueError, "Expected a non-negative value."); return 0;
};
}
}
result = (int)WebPGetInfo((uint8_t const *)arg1,arg2,arg3,arg4);
jresult = (jint)result;
SWIG_JavaArrayArgoutSchar(jenv, jarr1, arg1, jarg1);
{
jint jvalue = (jint)temp3;
(*jenv)->SetIntArrayRegion(jenv, jarg3, 0, 1, &jvalue);
}
{
jint jvalue = (jint)temp4;
(*jenv)->SetIntArrayRegion(jenv, jarg4, 0, 1, &jvalue);
}
free(arg1);
return jresult;
}
int webp_get_info(const uint8_t* data, size_t data_size, int* width, int* height) {
if (WebPGetInfo(data, data_size, width, height) == 1) {
return 0;
} else {
return 1;
}
}
static uint8_t* Decode(WEBP_CSP_MODE mode, const uint8_t* const data,
size_t data_size, int* const width, int* const height,
WebPDecBuffer* const keep_info) {
WebPDecParams params;
WebPDecBuffer output;
WebPInitDecBuffer(&output);
WebPResetDecParams(¶ms);
params.output = &output;
output.colorspace = mode;
// Retrieve (and report back) the required dimensions from bitstream.
if (!WebPGetInfo(data, data_size, &output.width, &output.height)) {
return NULL;
}
if (width != NULL) *width = output.width;
if (height != NULL) *height = output.height;
// Decode
if (DecodeInto(data, data_size, ¶ms) != VP8_STATUS_OK) {
return NULL;
}
if (keep_info != NULL) { // keep track of the side-info
WebPCopyDecBuffer(&output, keep_info);
}
// return decoded samples (don't clear 'output'!)
return WebPIsRGBMode(mode) ? output.u.RGBA.rgba : output.u.YUVA.y;
}
static uint8_t* Decode(WEBP_CSP_MODE mode, const uint8_t* const data,
size_t data_size, int* const width, int* const height,
WebPDecBuffer* const keep_info) {
WebPDecParams params;
WebPDecBuffer output;
WebPInitDecBuffer(&output);
WebPResetDecParams(¶ms);
params.output = &output;
output.colorspace = mode;
if (!WebPGetInfo(data, data_size, &output.width, &output.height)) {
return NULL;
}
if (width != NULL) *width = output.width;
if (height != NULL) *height = output.height;
if (DecodeInto(data, data_size, ¶ms) != VP8_STATUS_OK) {
return NULL;
}
if (keep_info != NULL) {
WebPCopyDecBuffer(&output, keep_info);
}
return WebPIsRGBMode(mode) ? output.u.RGBA.rgba : output.u.YUVA.y;
}
int
vips__iswebp_buffer( const void *buf, size_t len )
{
if( len >= MINIMAL_HEADER &&
WebPGetInfo( buf, MINIMAL_HEADER, NULL, NULL ) )
return( 1 );
return( 0 );
}
char load(ImlibImage * im, ImlibProgressFunction progress,
char progress_granularity, char immediate_load)
{
uint8_t *data;
size_t size;
int w,h;
int has_alpha;
#if (WEBP_DECODER_ABI_VERSION >= 0x200)
WebPBitstreamFeatures features;
#endif
char ret = 0;
if(im->data)
return 0;
if(!(data = read_file(im->real_file, &size, progress)))
return 0;
#if (WEBP_DECODER_ABI_VERSION >= 0x200)
if(WebPGetFeatures(data, size, &features) != VP8_STATUS_OK)
goto EXIT;
w = features.width;
h = features.height;
has_alpha = features.has_alpha;
#else /* compatibility with versions <= 0.1.3 */
if (!WebPGetInfo(data, size, &w, &h))
goto EXIT;
has_alpha = 0;
#endif
if(!im->loader && !im->data) {
im->w = w;
im->h = h;
if(!IMAGE_DIMENSIONS_OK(w, h))
goto EXIT;
if(!has_alpha)
UNSET_FLAGS(im->flags, F_HAS_ALPHA);
else
SET_FLAGS(im->flags, F_HAS_ALPHA);
im->format = strdup("webp");
}
if((!im->data && im->loader) || immediate_load || progress)
im->data = (DATA32*)WebPDecodeBGRA(data, size, &w, &h);
if(progress)
progress(im, 100, 0, 0, 0, 0);
ret = 1;
EXIT:
free(data);
return ret;
}
//{ Draw
void image_load(img_t *img,BYTE *data,int sz)
{
BYTE *bits,*p1,*p2;
BITMAPINFO bmi;
int ret;
int i;
img->hasalpha=img->sx=img->sy=0;
#ifdef CONSOLE_MODE
return;
#else
ret=WebPGetInfo((PBYTE)data,sz,&img->sx,&img->sy);
if(!ret)
{
log_err("ERROR in image_load(): failed WebPGetInfo\n");
return;
}
img->big=WebPDecodeBGRA((PBYTE)data,sz,&img->sx,&img->sy);
if(!img->big)
{
log_err("ERROR in image_load(): failed WebPDecodeBGRA\n");
return;
}
#endif
ZeroMemory(&bmi,sizeof(BITMAPINFO));
bmi.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth=img->sx;
bmi.bmiHeader.biHeight=-img->sy;
bmi.bmiHeader.biPlanes=1;
bmi.bmiHeader.biBitCount=32;
bmi.bmiHeader.biCompression=BI_RGB;
bmi.bmiHeader.biSizeImage=img->sx*img->sy*4;
img->dc=CreateCompatibleDC(0);
img->bitmap=CreateDIBSection(img->dc,&bmi,DIB_RGB_COLORS,(void *)&bits,0,0);
SelectObject(img->dc,img->bitmap);
p1=bits;p2=img->big;
for(i=0;i<img->sx*img->sy;i++)
{
BYTE B,G,R,A;
B=*p2++;
G=*p2++;
R=*p2++;
A=*p2++;
double dA=A/255.;
if(A!=255)img->hasalpha=1;
*p1++=(BYTE)(B*dA);
*p1++=(BYTE)(G*dA);
*p1++=(BYTE)(R*dA);
*p1++=A;
}
//log_con("%dx%d:%d,%d\n",img->sx,img->sy,img->hasalpha,img->index);
}
void webp_reader<T>::init()
{
int width, height;
if (!WebPGetInfo(buffer_->data(), buffer_->size(), &width, &height))
{
throw image_reader_exception("WEBP reader: WebPGetInfo failed");
}
width_ = width;
height_ = height;
}
int
vips__iswebp( const char *filename )
{
unsigned char header[MINIMAL_HEADER];
if( vips__get_bytes( filename, header, MINIMAL_HEADER ) &&
WebPGetInfo( header, MINIMAL_HEADER, NULL, NULL ) )
return( 1 );
return( 0 );
}
bool WebPDecoder::readHeader()
{
if (m_buf.empty())
{
FILE * wfile = NULL;
wfile = fopen(m_filename.c_str(), "rb");
if(wfile == NULL)
{
return false;
}
fseek(wfile, 0, SEEK_END);
size_t wfile_size = ftell(wfile);
fseek(wfile, 0, SEEK_SET);
if(wfile_size > (size_t)INT_MAX)
{
fclose(wfile);
return false;
}
data.create(1, (int)wfile_size, CV_8U);
size_t data_size = fread(data.data, 1, wfile_size, wfile);
if(wfile)
{
fclose(wfile);
}
if( data_size < wfile_size )
{
return false;
}
}
else
{
data = m_buf;
}
if(WebPGetInfo(data.data, data.total(), &m_width, &m_height) == 1)
{
m_type = CV_8UC3;
return true;
}
return false;
}
bool WEBPImageDecoder::decode(bool onlySize)
{
// Minimum number of bytes needed to ensure one can parse size information.
static const size_t sizeOfHeader = 30;
// Number of bytes per pixel.
static const int bytesPerPixel = 3;
if (failed())
return false;
const size_t dataSize = m_data->buffer().size();
const uint8_t* dataBytes =
reinterpret_cast<const uint8_t*>(m_data->buffer().data());
int width, height;
if (dataSize < sizeOfHeader)
return true;
if (!WebPGetInfo(dataBytes, dataSize, &width, &height))
return setFailed();
if (!ImageDecoder::isSizeAvailable() && !setSize(width, height))
return setFailed();
if (onlySize)
return true;
// FIXME: Add support for progressive decoding.
if (!isAllDataReceived())
return true;
ASSERT(!m_frameBufferCache.isEmpty());
RGBA32Buffer& buffer = m_frameBufferCache[0];
if (buffer.status() == RGBA32Buffer::FrameEmpty) {
ASSERT(width == size().width());
ASSERT(height == size().height());
if (!buffer.setSize(width, height))
return setFailed();
}
const int stride = width * bytesPerPixel;
Vector<uint8_t> rgb;
rgb.resize(height * stride);
if (!WebPDecodeBGRInto(dataBytes, dataSize, rgb.data(), rgb.size(), stride))
return setFailed();
// FIXME: remove this data copy.
for (int y = 0; y < height; ++y) {
const uint8_t* const src = &rgb[y * stride];
for (int x = 0; x < width; ++x)
buffer.setRGBA(x, y, src[bytesPerPixel * x + 2], src[bytesPerPixel * x + 1], src[bytesPerPixel * x + 0], 0xff);
}
buffer.setStatus(RGBA32Buffer::FrameComplete);
buffer.setHasAlpha(false);
buffer.setRect(IntRect(IntPoint(), size()));
return true;
}
PremultipliedImage decodeWebP(const uint8_t* data, size_t size) {
int width = 0, height = 0;
if (WebPGetInfo(data, size, &width, &height) == 0) {
throw std::runtime_error("failed to retrieve WebP basic header information");
}
int stride = width * 4;
size_t webpSize = stride * height;
auto webp = std::make_unique<uint8_t[]>(webpSize);
if (!WebPDecodeRGBAInto(data, size, webp.get(), webpSize, stride)) {
throw std::runtime_error("failed to decode WebP data");
}
UnassociatedImage image { size_t(width), size_t(height), std::move(webp) };
return util::premultiply(std::move(image));
}
std::auto_ptr<Image> WebPFormat::read(byte_source* src, ImageFactory* factory, const options_map& opts) {
std::vector<byte> data = full_data(*src);
int w, h;
int ok = WebPGetInfo(&data[0], data.size(), &w, &h);
if (!ok) {
throw CannotReadError("imread.imread._webp: File does not validate as WebP");
}
std::auto_ptr<Image> output(factory->create(8, h, w, 4));
const int stride = w*4;
const uint8_t* p = WebPDecodeRGBAInto(
&data[0], data.size(),
output->rowp_as<byte>(0), h*stride, stride);
if (p != output->rowp_as<uint8_t>(0)) {
throw CannotReadError("imread.imread._webp: Error in decoding file");
}
return output;
}
cairo_surface_t* guacenc_webp_decoder(unsigned char* data, int length) {
int width, height;
/* Validate WebP and pull dimensions */
if (!WebPGetInfo((uint8_t*) data, length, &width, &height)) {
guacenc_log(GUAC_LOG_WARNING, "Invalid WebP data");
return NULL;
}
/* Create blank Cairo surface */
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
width, height);
/* Fill surface with opaque black */
cairo_t* cairo = cairo_create(surface);
cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cairo, 0.0, 0.0, 0.0, 1.0);
cairo_paint(cairo);
cairo_destroy(cairo);
/* Finish any pending draws */
cairo_surface_flush(surface);
/* Pull underlying buffer and its stride */
int stride = cairo_image_surface_get_stride(surface);
unsigned char* image = cairo_image_surface_get_data(surface);
/* Read WebP into surface */
uint8_t* result = WebPDecodeBGRAInto((uint8_t*) data, length,
(uint8_t*) image, stride * height, stride);
/* Verify WebP was successfully decoded */
if (result == NULL) {
guacenc_log(GUAC_LOG_WARNING, "Invalid WebP data");
cairo_surface_destroy(surface);
return NULL;
}
/* WebP was read successfully */
return surface;
}
Bitmap *ImageFromData(const char *data, size_t len)
{
int w, h;
if (!WebPGetInfo((const uint8_t *)data, len, &w, &h))
return nullptr;
Bitmap bmp(w, h, PixelFormat32bppARGB);
Rect bmpRect(0, 0, w, h);
BitmapData bmpData;
Status ok = bmp.LockBits(&bmpRect, ImageLockModeWrite, PixelFormat32bppARGB, &bmpData);
if (ok != Ok)
return nullptr;
if (!WebPDecodeBGRAInto((const uint8_t *)data, len, (uint8_t *)bmpData.Scan0, bmpData.Stride * h, bmpData.Stride))
return nullptr;
bmp.UnlockBits(&bmpData);
// hack to avoid the use of ::new (because there won't be a corresponding ::delete)
return bmp.Clone(0, 0, w, h, PixelFormat32bppARGB);
}
static gboolean
gdk_pixbuf__webp_image_load_increment (gpointer context,
const guchar *buf, guint size,
GError **error)
{
gint w, h, stride;
WebPContext *data = (WebPContext *) context;
g_return_val_if_fail(data != NULL, FALSE);
if (!data->got_header) {
gint rc;
rc = WebPGetInfo (buf, size, &w, &h);
if (rc == 0) {
g_set_error (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
"Cannot read WebP image header.");
return FALSE;
}
stride = w * 3; /* TODO Update when alpha support released */
data->got_header = TRUE;
if (data->size_func) {
(* data->size_func) (&w, &h,
data->user_data);
}
data->pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
FALSE,
8,
w,
h);
data->decbuf = g_try_malloc (h * stride);
if (!data->decbuf) {
g_set_error (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
"Cannot allocate memory for decoded image data.");
return FALSE;
}
data->idec = WebPINewRGB (MODE_RGB,
data->decbuf,
h * stride,
stride);
if (!data->idec) {
g_set_error (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_FAILED,
"Cannot create WebP decoder.");
return FALSE;
}
if (data->prepare_func) {
(* data->prepare_func) (data->pixbuf,
NULL,
data->user_data);
}
}
/* Append size bytes to decoder's buffer */
const VP8StatusCode status = WebPIAppend (data->idec, buf, size);
if (status != VP8_STATUS_SUSPENDED && status != VP8_STATUS_OK) {
g_set_error (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
"WebP decoder failed with status code %d.",
status);
return FALSE;
}
/* Decode decoder's updated buffer */
guint8 *dec_output;
dec_output = WebPIDecGetRGB (data->idec, &data->last_y, &w, &h, &stride);
if (dec_output == NULL && status != VP8_STATUS_SUSPENDED) {
g_set_error(error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_FAILED,
"Bad inputs to WebP decoder.");
return FALSE;
}
/* Copy decoder output to pixbuf */
gint y, row;
guchar *dptr;
dptr = gdk_pixbuf_get_pixels (data->pixbuf);
const guint8 offset = w % 4; /* decoded width will be divisible by 4 */
for (y = 0; y < data->last_y; ++y, dptr += offset) {
row = y * stride;
g_memmove (dptr + row, dec_output + row, stride);
}
if (data->update_func) {
(* data->update_func) (data->pixbuf, 0, 0,
w,
data->last_y,
data->user_data);
}
return TRUE;
}
bool WEBPImageDecoder::decode(bool onlySize)
{
if (failed())
return false;
const uint8_t* dataBytes = reinterpret_cast<const uint8_t*>(m_data->data());
const size_t dataSize = m_data->size();
if (!ImageDecoder::isSizeAvailable()) {
static const size_t imageHeaderSize = 30;
if (dataSize < imageHeaderSize)
return false;
int width, height;
#ifdef QCMS_WEBP_COLOR_CORRECTION
WebPData inputData = { dataBytes, dataSize };
WebPDemuxState state;
WebPDemuxer* demuxer = WebPDemuxPartial(&inputData, &state);
if (!demuxer)
return setFailed();
width = WebPDemuxGetI(demuxer, WEBP_FF_CANVAS_WIDTH);
height = WebPDemuxGetI(demuxer, WEBP_FF_CANVAS_HEIGHT);
m_formatFlags = WebPDemuxGetI(demuxer, WEBP_FF_FORMAT_FLAGS);
m_hasAlpha = !!(m_formatFlags & ALPHA_FLAG);
WebPDemuxDelete(demuxer);
if (state <= WEBP_DEMUX_PARSING_HEADER)
return false;
#elif (WEBP_DECODER_ABI_VERSION >= 0x0163)
WebPBitstreamFeatures features;
if (WebPGetFeatures(dataBytes, dataSize, &features) != VP8_STATUS_OK)
return setFailed();
width = features.width;
height = features.height;
m_hasAlpha = features.has_alpha;
#else
// Earlier version won't be able to display WebP files with alpha.
if (!WebPGetInfo(dataBytes, dataSize, &width, &height))
return setFailed();
m_hasAlpha = false;
#endif
if (!setSize(width, height))
return setFailed();
}
ASSERT(ImageDecoder::isSizeAvailable());
if (onlySize)
return true;
ASSERT(!m_frameBufferCache.isEmpty());
ImageFrame& buffer = m_frameBufferCache[0];
ASSERT(buffer.status() != ImageFrame::FrameComplete);
if (buffer.status() == ImageFrame::FrameEmpty) {
if (!buffer.setSize(size().width(), size().height()))
return setFailed();
buffer.setStatus(ImageFrame::FramePartial);
buffer.setHasAlpha(m_hasAlpha);
buffer.setOriginalFrameRect(IntRect(IntPoint(), size()));
}
if (!m_decoder) {
WEBP_CSP_MODE mode = outputMode(m_hasAlpha);
if (!m_premultiplyAlpha)
mode = outputMode(false);
if ((m_formatFlags & ICCP_FLAG) && !ignoresGammaAndColorProfile())
mode = MODE_RGBA; // Decode to RGBA for input to libqcms.
int rowStride = size().width() * sizeof(ImageFrame::PixelData);
uint8_t* output = reinterpret_cast<uint8_t*>(buffer.getAddr(0, 0));
int outputSize = size().height() * rowStride;
m_decoder = WebPINewRGB(mode, output, outputSize, rowStride);
if (!m_decoder)
return setFailed();
}
switch (WebPIUpdate(m_decoder, dataBytes, dataSize)) {
case VP8_STATUS_OK:
if ((m_formatFlags & ICCP_FLAG) && !ignoresGammaAndColorProfile())
applyColorProfile(dataBytes, dataSize, buffer);
buffer.setStatus(ImageFrame::FrameComplete);
clear();
return true;
case VP8_STATUS_SUSPENDED:
if ((m_formatFlags & ICCP_FLAG) && !ignoresGammaAndColorProfile())
applyColorProfile(dataBytes, dataSize, buffer);
return false;
default:
clear();
return setFailed();
}
}
SDL_Surface *IMG_LoadWEBP_RW(SDL_RWops *src)
{
Sint64 start;
const char *error = NULL;
SDL_Surface *volatile surface = NULL;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
WebPBitstreamFeatures features;
int raw_data_size;
uint8_t *raw_data = NULL;
int r;
uint8_t *ret;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !IMG_Init(IMG_INIT_WEBP) ) {
goto error;
}
raw_data_size = -1;
if ( !webp_getinfo( src, &raw_data_size ) ) {
error = "Invalid WEBP";
goto error;
}
// seek to start of file
SDL_RWseek(src, 0, RW_SEEK_SET );
raw_data = (uint8_t*) SDL_malloc( raw_data_size );
if ( raw_data == NULL ) {
error = "Failed to allocate enought buffer for WEBP";
goto error;
}
r = SDL_RWread(src, raw_data, 1, raw_data_size );
if ( r != raw_data_size ) {
error = "Failed to read WEBP";
goto error;
}
#if 0
// extract size of picture, not interesting since we don't know about alpha channel
int width = -1, height = -1;
if ( !WebPGetInfo( raw_data, raw_data_size, &width, &height ) ) {
printf("WebPGetInfo has failed\n" );
return NULL;
}
#endif
if ( lib.webp_get_features_internal( raw_data, raw_data_size, &features, WEBP_DECODER_ABI_VERSION ) != VP8_STATUS_OK ) {
error = "WebPGetFeatures has failed";
goto error;
}
/* Check if it's ok !*/
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
Amask = (features.has_alpha) ? 0xFF000000 : 0;
#else
s = (features.has_alpha) ? 0 : 8;
Rmask = 0xFF000000 >> s;
Gmask = 0x00FF0000 >> s;
Bmask = 0x0000FF00 >> s;
Amask = 0x000000FF >> s;
#endif
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
features.width, features.height,
features.has_alpha?32:24, Rmask,Gmask,Bmask,Amask);
if ( surface == NULL ) {
error = "Failed to allocate SDL_Surface";
goto error;
}
if ( features.has_alpha ) {
ret = lib.webp_decode_rgba_into( raw_data, raw_data_size, (uint8_t *)surface->pixels, surface->pitch * surface->h, surface->pitch );
} else {
ret = lib.webp_decode_rgb_into( raw_data, raw_data_size, (uint8_t *)surface->pixels, surface->pitch * surface->h, surface->pitch );
}
if ( !ret ) {
error = "Failed to decode WEBP";
goto error;
}
return surface;
error:
if ( surface ) {
SDL_FreeSurface( surface );
}
if ( raw_data ) {
SDL_free( raw_data );
}
if ( error ) {
IMG_SetError( error );
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(NULL);
}
bool WEBPImageDecoder::decode(bool onlySize)
{
if (failed())
return false;
#if defined(__LB_SHELL__)
// We dont want progressive decoding.
if (!isAllDataReceived())
return false;
#endif
const uint8_t* dataBytes = reinterpret_cast<const uint8_t*>(m_data->data());
const size_t dataSize = m_data->size();
if (!ImageDecoder::isSizeAvailable()) {
static const size_t imageHeaderSize = 30;
if (dataSize < imageHeaderSize)
return false;
int width, height;
#if (WEBP_DECODER_ABI_VERSION >= 0x0163)
WebPBitstreamFeatures features;
if (WebPGetFeatures(dataBytes, dataSize, &features) != VP8_STATUS_OK)
return setFailed();
width = features.width;
height = features.height;
m_hasAlpha = features.has_alpha;
#else
// Earlier version won't be able to display WebP files with alpha.
if (!WebPGetInfo(dataBytes, dataSize, &width, &height))
return setFailed();
m_hasAlpha = false;
#endif
if (!setSize(width, height))
return setFailed();
}
ASSERT(ImageDecoder::isSizeAvailable());
if (onlySize)
return true;
ASSERT(!m_frameBufferCache.isEmpty());
ImageFrame& buffer = m_frameBufferCache[0];
ASSERT(buffer.status() != ImageFrame::FrameComplete);
if (buffer.status() == ImageFrame::FrameEmpty) {
if (!buffer.setSize(size().width(), size().height()))
return setFailed();
buffer.setStatus(ImageFrame::FramePartial);
buffer.setHasAlpha(m_hasAlpha);
buffer.setOriginalFrameRect(IntRect(IntPoint(), size()));
}
if (!m_decoder) {
int rowStride = size().width() * sizeof(ImageFrame::PixelData);
uint8_t* output = reinterpret_cast<uint8_t*>(buffer.getAddr(0, 0));
int outputSize = size().height() * rowStride;
m_decoder = WebPINewRGB(outputMode(m_hasAlpha), output, outputSize, rowStride);
if (!m_decoder)
return setFailed();
}
switch (WebPIUpdate(m_decoder, dataBytes, dataSize)) {
case VP8_STATUS_OK:
buffer.setStatus(ImageFrame::FrameComplete);
WebPIDelete(m_decoder);
m_decoder = 0;
return true;
case VP8_STATUS_SUSPENDED:
return false;
default:
WebPIDelete(m_decoder);
m_decoder = 0;
return setFailed();
}
}
bool WEBPImageDecoder::decode(bool onlySize)
{
// Minimum number of bytes needed to ensure one can parse size information.
static const size_t sizeOfHeader = 30;
// Number of bytes per pixel.
static const int bytesPerPixel = 3;
if (failed())
return false;
const size_t dataSize = m_data->size();
if (dataSize < sizeOfHeader)
return true;
int width, height;
const uint8_t* dataBytes = reinterpret_cast<const uint8_t*>(m_data->data());
if (!WebPGetInfo(dataBytes, dataSize, &width, &height))
return setFailed();
if (!ImageDecoder::isSizeAvailable() && !setSize(width, height))
return setFailed();
if (onlySize)
return true;
bool allDataReceived = isAllDataReceived();
int stride = width * bytesPerPixel;
ASSERT(!m_frameBufferCache.isEmpty());
ImageFrame& buffer = m_frameBufferCache[0];
if (buffer.status() == ImageFrame::FrameEmpty) {
ASSERT(width == size().width());
ASSERT(height == size().height());
if (!buffer.setSize(width, height))
return setFailed();
buffer.setStatus(allDataReceived ? ImageFrame::FrameComplete : ImageFrame::FramePartial);
// FIXME: We currently hard code false below because libwebp doesn't support alpha yet.
buffer.setHasAlpha(false);
buffer.setOriginalFrameRect(IntRect(IntPoint(), size()));
m_rgbOutput.resize(height * stride);
}
int newLastVisibleRow = 0; // Last completed row.
if (allDataReceived) {
if (!WebPDecodeRGBInto(dataBytes, dataSize, m_rgbOutput.data(), m_rgbOutput.size(), stride))
return setFailed();
newLastVisibleRow = height;
} else {
if (!m_decoder) {
m_decoder = WebPINewRGB(MODE_RGB, m_rgbOutput.data(), m_rgbOutput.size(), stride);
if (!m_decoder)
return setFailed();
}
const VP8StatusCode status = WebPIUpdate(m_decoder, dataBytes, dataSize);
if (status != VP8_STATUS_OK && status != VP8_STATUS_SUSPENDED)
return setFailed();
if (!WebPIDecGetRGB(m_decoder, &newLastVisibleRow, 0, 0, 0))
return setFailed();
ASSERT(newLastVisibleRow >= 0);
ASSERT(newLastVisibleRow <= height);
}
// FIXME: remove this data copy.
for (int y = m_lastVisibleRow; y < newLastVisibleRow; ++y) {
const uint8_t* const src = &m_rgbOutput[y * stride];
for (int x = 0; x < width; ++x)
buffer.setRGBA(x, y, src[bytesPerPixel * x + 0], src[bytesPerPixel * x + 1], src[bytesPerPixel * x + 2], 0xff);
}
m_lastVisibleRow = newLastVisibleRow;
if (m_lastVisibleRow == height)
buffer.setStatus(ImageFrame::FrameComplete);
return m_lastVisibleRow == height;
}
static jobject WebPFactory_decodeBuffer
(JNIEnv *jniEnv, const uint8_t *buffer, size_t length, jobject options)
{
// Validate image
int bitmapWidth = 0;
int bitmapHeight = 0;
if (!WebPGetInfo(buffer, length, &bitmapWidth, &bitmapHeight))
{
jniEnv->ThrowNew(jrefs::java::lang::RuntimeException->jclassRef, "Invalid WebP format");
return NULL;
}
// Check if size is all what we were requested to do
if(options && jniEnv->GetBooleanField(options, jrefs::android::graphics::BitmapFactory->Options.inJustDecodeBounds) == JNI_TRUE)
{
jniEnv->SetIntField(options, jrefs::android::graphics::BitmapFactory->Options.outWidth, bitmapWidth);
jniEnv->SetIntField(options, jrefs::android::graphics::BitmapFactory->Options.outHeight, bitmapHeight);
return NULL;
}
// Initialize decoder config and configure scaling if requested
WebPDecoderConfig config;
if (!WebPInitDecoderConfig(&config))
{
jniEnv->ThrowNew(jrefs::java::lang::RuntimeException->jclassRef, "Unable to init WebP decoder config");
return NULL;
}
if (options)
{
jint inSampleSize = jniEnv->GetIntField(options, jrefs::android::graphics::BitmapFactory->Options.inSampleSize);
if (inSampleSize > 1)
{
config.options.use_scaling = 1;
config.options.scaled_width = bitmapWidth /= inSampleSize;
config.options.scaled_height = bitmapHeight /= inSampleSize;
}
}
__android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, "Decoding into %dx%d bitmap", bitmapWidth, bitmapHeight);
// Create bitmap
jobject value__ARGB_8888 = jniEnv->GetStaticObjectField(jrefs::android::graphics::Bitmap->Config.jclassRef, jrefs::android::graphics::Bitmap->Config.ARGB_8888);
jobject outputBitmap = jniEnv->CallStaticObjectMethod(jrefs::android::graphics::Bitmap->jclassRef, jrefs::android::graphics::Bitmap->createBitmap,
(jint)bitmapWidth, (jint)bitmapHeight,
value__ARGB_8888);
if (!outputBitmap)
{
jniEnv->ThrowNew(jrefs::java::lang::RuntimeException->jclassRef, "Failed to allocate Bitmap");
return NULL;
}
// Get information about bitmap passed
AndroidBitmapInfo bitmapInfo;
if (AndroidBitmap_getInfo(jniEnv, outputBitmap, &bitmapInfo) != ANDROID_BITMAP_RESULT_SUCCESS)
{
jniEnv->ThrowNew(jrefs::java::lang::RuntimeException->jclassRef, "Failed to get Bitmap information");
return NULL;
}
// Lock pixels
void *bitmapPixels = 0;
if (AndroidBitmap_lockPixels(jniEnv, outputBitmap, &bitmapPixels) != ANDROID_BITMAP_RESULT_SUCCESS)
{
jniEnv->ThrowNew(jrefs::java::lang::RuntimeException->jclassRef, "Failed to lock Bitmap pixels");
return NULL;
}
// Decode to ARGB
config.output.colorspace = MODE_RGBA;
config.output.u.RGBA.rgba = (uint8_t*)bitmapPixels;
config.output.u.RGBA.stride = bitmapInfo.stride;
config.output.u.RGBA.size = bitmapInfo.height * bitmapInfo.stride;
config.output.is_external_memory = 1;
if (WebPDecode(buffer, length, &config) != VP8_STATUS_OK)
{
AndroidBitmap_unlockPixels(jniEnv, outputBitmap);
jniEnv->ThrowNew(jrefs::java::lang::RuntimeException->jclassRef, "Failed to decode WebP pixel data");
return NULL;
}
// Unlock pixels
if (AndroidBitmap_unlockPixels(jniEnv, outputBitmap) != ANDROID_BITMAP_RESULT_SUCCESS)
{
jniEnv->ThrowNew(jrefs::java::lang::RuntimeException->jclassRef, "Failed to unlock Bitmap pixels");
return NULL;
}
return outputBitmap;
}
int ImageFormatWEBP::load(const char *name, int& width, int& height, int& format) {
printf("ImageFormatWEBP::load\n");
// Open File
FILE* file = fopen(name,"rb");
if (file == 0) {
printf("ImageFormatWEBP::load(): can't open file '%s'\n",name);
return 0;
}
// init width / height / format value to 0
width = 0;
height = 0;
format = 0;
// size of file
fseek(file,0,SEEK_END);
const long data_size = ftell(file);
fseek(file,0,SEEK_SET);
unsigned char * img_data = new unsigned char[data_size];
fread(img_data,data_size,1,file);
fclose(file);
// Get header info
int webpinfo = WebPGetInfo(img_data, data_size, &width, &height);
if (webpinfo == 0) {
printf("ImageFormatWEBP::load(): wrong header in \"%s\" file\n",name);
delete img_data;
return 0;
}
// Get betstream
WebPBitstreamFeatures features;
VP8StatusCode status = WebPGetFeatures(img_data, data_size, &features);
if (status != VP8_STATUS_OK) {
printf("ImageFormatWEBP::load(): bad bitstream in \"%s\" file, error:\"%d\"\n",name,status);
delete img_data;
return 0;
}
format = features.has_alpha ? 4 : 3;
int data_decoded_size = width * height * format;
// raw data image container
unsigned char * img_data_decoded = new unsigned char[data_decoded_size];
memset(img_data_decoded,0x00,data_decoded_size);
// decode image inside container (RGB and RGBA)
if (format == 3 ) {
if ( WebPDecodeRGBInto(img_data, data_size, img_data_decoded, data_decoded_size, width * format) == NULL ) {
printf("ImageFormatWEBP::load(): can't decode RGB \"%s\" file\n",name);
delete img_data;
delete img_data_decoded;
return 0;
}
} else {
if ( WebPDecodeRGBAInto(img_data, data_size, img_data_decoded, data_decoded_size, width * format) == NULL ) {
printf("ImageFormatWEBP::load(): can't decode RGBA \"%s\" file\n",name);
delete img_data;
delete img_data_decoded;
return 0;
}
}
// create temporary file for glue code javascript
FILE* raw = fopen(kTempararyName,"wb");
if (raw) {
fwrite(img_data_decoded,data_decoded_size ,1 , raw);
fclose(raw);
}
delete img_data;
delete img_data_decoded;
return 1;
}
// Store image bearing chunks to 'frame'.
static ParseStatus StoreFrame(int frame_num, MemBuffer* const mem,
Frame* const frame) {
int alpha_chunks = 0;
int image_chunks = 0;
int done = (MemDataSize(mem) < CHUNK_HEADER_SIZE);
ParseStatus status = PARSE_OK;
if (done) return PARSE_NEED_MORE_DATA;
do {
const size_t chunk_start_offset = mem->start_;
const uint32_t fourcc = GetLE32(mem);
const uint32_t payload_size = GetLE32(mem);
const uint32_t payload_size_padded = payload_size + (payload_size & 1);
const size_t payload_available = (payload_size_padded > MemDataSize(mem))
? MemDataSize(mem) : payload_size_padded;
const size_t chunk_size = CHUNK_HEADER_SIZE + payload_available;
if (payload_size > MAX_CHUNK_PAYLOAD) return PARSE_ERROR;
if (SizeIsInvalid(mem, payload_size_padded)) return PARSE_ERROR;
if (payload_size_padded > MemDataSize(mem)) status = PARSE_NEED_MORE_DATA;
switch (fourcc) {
case MKFOURCC('A', 'L', 'P', 'H'):
if (alpha_chunks == 0) {
++alpha_chunks;
frame->img_components_[1].offset_ = chunk_start_offset;
frame->img_components_[1].size_ = chunk_size;
frame->frame_num_ = frame_num;
Skip(mem, payload_available);
} else {
goto Done;
}
break;
case MKFOURCC('V', 'P', '8', ' '):
case MKFOURCC('V', 'P', '8', 'L'):
if (image_chunks == 0) {
int width = 0, height = 0;
++image_chunks;
frame->img_components_[0].offset_ = chunk_start_offset;
frame->img_components_[0].size_ = chunk_size;
// Extract the width and height from the bitstream, tolerating
// failures when the data is incomplete.
if (!WebPGetInfo(mem->buf_ + frame->img_components_[0].offset_,
frame->img_components_[0].size_, &width, &height) &&
status != PARSE_NEED_MORE_DATA) {
return PARSE_ERROR;
}
frame->width_ = width;
frame->height_ = height;
frame->frame_num_ = frame_num;
frame->complete_ = (status == PARSE_OK);
Skip(mem, payload_available);
} else {
goto Done;
}
break;
Done:
default:
// Restore fourcc/size when moving up one level in parsing.
Rewind(mem, CHUNK_HEADER_SIZE);
done = 1;
break;
}
if (mem->start_ == mem->riff_end_) {
done = 1;
} else if (MemDataSize(mem) < CHUNK_HEADER_SIZE) {
status = PARSE_NEED_MORE_DATA;
}
} while (!done && status == PARSE_OK);
return status;
}
GDALDataset *WEBPDataset::Open( GDALOpenInfo * poOpenInfo )
{
if( !Identify( poOpenInfo ) || poOpenInfo->fpL == NULL )
return NULL;
int nWidth, nHeight;
if (!WebPGetInfo((const uint8_t*)poOpenInfo->pabyHeader, (uint32_t)poOpenInfo->nHeaderBytes,
&nWidth, &nHeight))
return NULL;
int nBands = 3;
#if WEBP_DECODER_ABI_VERSION >= 0x0002
WebPDecoderConfig config;
if (!WebPInitDecoderConfig(&config))
return NULL;
int bOK = WebPGetFeatures(poOpenInfo->pabyHeader, poOpenInfo->nHeaderBytes, &config.input) == VP8_STATUS_OK;
if (config.input.has_alpha)
nBands = 4;
WebPFreeDecBuffer(&config.output);
if (!bOK)
return NULL;
#endif
if( poOpenInfo->eAccess == GA_Update )
{
CPLError( CE_Failure, CPLE_NotSupported,
"The WEBP driver does not support update access to existing"
" datasets.\n" );
return NULL;
}
/* -------------------------------------------------------------------- */
/* Create a corresponding GDALDataset. */
/* -------------------------------------------------------------------- */
WEBPDataset *poDS;
poDS = new WEBPDataset();
poDS->nRasterXSize = nWidth;
poDS->nRasterYSize = nHeight;
poDS->fpImage = poOpenInfo->fpL;
poOpenInfo->fpL = NULL;
/* -------------------------------------------------------------------- */
/* Create band information objects. */
/* -------------------------------------------------------------------- */
for( int iBand = 0; iBand < nBands; iBand++ )
poDS->SetBand( iBand+1, new WEBPRasterBand( poDS, iBand+1 ) );
/* -------------------------------------------------------------------- */
/* Initialize any PAM information. */
/* -------------------------------------------------------------------- */
poDS->SetDescription( poOpenInfo->pszFilename );
poDS->TryLoadXML( poOpenInfo->GetSiblingFiles() );
/* -------------------------------------------------------------------- */
/* Open overviews. */
/* -------------------------------------------------------------------- */
poDS->oOvManager.Initialize( poDS, poOpenInfo->pszFilename, poOpenInfo->GetSiblingFiles() );
return poDS;
}
static int
WEBPDecode(WEBPDec* pSrc, Vbitmap *vbitmap,
YmagineFormatOptions *options)
{
int contentSize;
int origWidth = 0;
int origHeight = 0;
int quality;
unsigned char header[WEBP_HEADER_SIZE + 32];
int headerlen;
int toRead;
unsigned char *input = NULL;
int inputlen;
int oformat;
int opitch;
unsigned char *odata;
int rc;
Vrect srcrect;
Vrect destrect;
WebPIDecoder* idec;
if (options == NULL) {
/* Options argument is mandatory */
return 0;
}
headerlen = YchannelRead(pSrc->channel, (char *) header, sizeof(header));
if (headerlen < WEBP_HEADER_SIZE) {
return 0;
}
/* Check WEBP header */
contentSize = WebpCheckHeader((const char*) header, headerlen);
if (contentSize <= 0) {
return 0;
}
if (WebPGetInfo(header, headerlen, &origWidth, &origHeight) == 0) {
ALOGD("invalid VP8 header");
return 0;
}
if (origWidth <= 0 || origHeight <= 0) {
return 0;
}
if (YmagineFormatOptions_invokeCallback(options, YMAGINE_IMAGEFORMAT_WEBP,
origWidth, origHeight) != YMAGINE_OK) {
return 0;
}
if (YmaginePrepareTransform(vbitmap, options,
origWidth, origHeight,
&srcrect, &destrect) != YMAGINE_OK) {
return 0;
}
#if YMAGINE_DEBUG_WEBP
ALOGD("size: %dx%d req: %dx%d %s -> output: %dx%d",
origWidth, origHeight,
destrect.width, destrect.height,
(options->scalemode == YMAGINE_SCALE_CROP) ? "crop" :
(options->scalemode == YMAGINE_SCALE_FIT ? "fit" : "letterbox"),
destrect.width, destrect.height);
#endif
if (vbitmap != NULL) {
if (options->resizable) {
destrect.x = 0;
destrect.y = 0;
if (VbitmapResize(vbitmap, destrect.width, destrect.height) != YMAGINE_OK) {
return 0;
}
}
if (VbitmapType(vbitmap) == VBITMAP_NONE) {
/* Decode bounds only, return positive number (number of lines) on success */
return VbitmapHeight(vbitmap);
}
}
pSrc->bitmap = vbitmap;
inputlen = contentSize;
toRead = inputlen - headerlen;
rc = VbitmapLock(vbitmap);
if (rc != YMAGINE_OK) {
ALOGE("VbitmapLock() failed (code %d)", rc);
rc = YMAGINE_ERROR;
} else {
odata = VbitmapBuffer(vbitmap);
opitch = VbitmapPitch(vbitmap);
oformat = VbitmapColormode(vbitmap);
pSrc->inwidth = origWidth;
pSrc->inheight = origHeight;
pSrc->outwidth = destrect.width;
pSrc->outheight = destrect.height;
if (odata == NULL) {
ALOGD("failed to get reference to pixel buffer");
rc = YMAGINE_ERROR;
} else {
WebPDecoderConfig config;
int supported = 1;
int webpcolorspace;
switch(oformat) {
case VBITMAP_COLOR_RGBA:
webpcolorspace = MODE_RGBA;
break;
case VBITMAP_COLOR_RGB:
webpcolorspace = MODE_RGB;
break;
case VBITMAP_COLOR_rgbA:
webpcolorspace = MODE_rgbA;
break;
case VBITMAP_COLOR_ARGB:
webpcolorspace = MODE_ARGB;
break;
case VBITMAP_COLOR_Argb:
webpcolorspace = MODE_Argb;
break;
case VBITMAP_COLOR_GRAYSCALE:
case VBITMAP_COLOR_YUV:
case VBITMAP_COLOR_CMYK:
case VBITMAP_COLOR_YCbCr:
default:
supported = 0;
break;
}
if (!supported) {
ALOGD("currently only support RGB, RGBA webp decoding");
rc = YMAGINE_ERROR;
} else {
pSrc->isdirect = 1;
pSrc->outformat = oformat;
pSrc->outbpp = VbitmapBpp(vbitmap);
pSrc->outstride = opitch;
pSrc->outbuffer = odata + destrect.x * pSrc->outbpp + destrect.y * pSrc->outstride;
WebPInitDecoderConfig(&config);
quality = YmagineFormatOptions_normalizeQuality(options);
if (quality < 90) {
config.options.no_fancy_upsampling = 1;
}
if (quality < 60) {
config.options.bypass_filtering = 1;
}
config.options.use_threads = 1;
if (srcrect.x != 0 || srcrect.y != 0 || srcrect.width != origWidth || srcrect.height != origHeight) {
/* Crop on source */
config.options.use_cropping = 1;
config.options.crop_left = srcrect.x;
config.options.crop_top = srcrect.y;
config.options.crop_width = srcrect.width;
config.options.crop_height = srcrect.height;
}
if (pSrc->outwidth != pSrc->inwidth || pSrc->outheight != pSrc->inheight) {
config.options.use_scaling = 1;
config.options.scaled_width = pSrc->outwidth;
config.options.scaled_height = pSrc->outheight;
}
rc = YMAGINE_ERROR;
// Specify the desired output colorspace:
config.output.colorspace = webpcolorspace;
// Have config.output point to an external buffer:
config.output.u.RGBA.rgba = (uint8_t*) pSrc->outbuffer;
config.output.u.RGBA.stride = pSrc->outstride;
config.output.u.RGBA.size = pSrc->outstride * pSrc->outheight;
config.output.is_external_memory = 1;
idec = WebPIDecode(NULL, 0, &config);
if (idec != NULL) {
VP8StatusCode status;
status = WebPIAppend(idec, header, headerlen);
if (status == VP8_STATUS_OK || status == VP8_STATUS_SUSPENDED) {
int bytes_remaining = toRead;
int bytes_read;
int bytes_req;
unsigned char rbuf[8192];
// See WebPIUpdate(idec, buffer, size_of_transmitted_buffer);
bytes_req = sizeof(rbuf);
while (bytes_remaining > 0) {
if (bytes_req > bytes_remaining) {
bytes_req = bytes_remaining;
}
bytes_read = YchannelRead(pSrc->channel, rbuf, bytes_req);
if (bytes_read <= 0) {
break;
}
status = WebPIAppend(idec, (uint8_t*) rbuf, bytes_read);
if (status == VP8_STATUS_OK) {
rc = YMAGINE_OK;
break;
} else if (status == VP8_STATUS_SUSPENDED) {
if (bytes_remaining > 0) {
bytes_remaining -= bytes_read;
}
} else {
/* error */
break;
}
// The above call decodes the current available buffer.
// Part of the image can now be refreshed by calling
// WebPIDecGetRGB()/WebPIDecGetYUVA() etc.
}
}
}
// the object doesn't own the image memory, so it can now be deleted.
WebPIDelete(idec);
WebPFreeDecBuffer(&config.output);
}
}
VbitmapUnlock(vbitmap);
}
if (input) {
Ymem_free((char*) input);
}
if (!pSrc->isdirect) {
Ymem_free(pSrc->outbuffer);
}
if (rc == YMAGINE_OK) {
return origHeight;
}
return 0;
}
gboolean load_image(const gchar *filename,
gint32 *image_ID,
GError **error)
{
gboolean status = FALSE;
gchar *indata = NULL;
gsize indatalen;
gint width;
gint height;
WebPMux *mux = NULL;
WebPData wp_data;
uint32_t flags;
uint8_t *outdata = NULL;
#ifdef GIMP_2_9
/* Initialize GEGL */
gegl_init(NULL, NULL);
#endif
do {
/* Attempt to read the file contents from disk */
if (g_file_get_contents(filename,
&indata,
&indatalen,
error) == FALSE) {
break;
}
/* Validate WebP data, grabbing the width and height */
if (!WebPGetInfo(indata, indatalen, &width, &height)) {
break;
}
/* Create a WebPMux from the contents of the file */
wp_data.bytes = (uint8_t*)indata;
wp_data.size = indatalen;
mux = WebPMuxCreate(&wp_data, 1);
if (mux == NULL) {
break;
}
/* Retrieve the features present */
if (WebPMuxGetFeatures(mux, &flags) != WEBP_MUX_OK) {
break;
}
/* TODO: decode the image in "chunks" or "tiles" */
/* TODO: check if an alpha channel is present */
/* Create the new image and associated layer */
*image_ID = gimp_image_new(width, height, GIMP_RGB);
#ifdef WEBP_0_5
if (flags & ANIMATION_FLAG) {
int frames, i;
/* Retrieve the number of frames */
WebPMuxNumChunks(mux, WEBP_CHUNK_ANMF, &frames);
/* Loop over each of the frames */
for (i = 0; i < frames; ++i) {
WebPMuxFrameInfo frame = {0};
/* Retrieve the data for the frame */
if (WebPMuxGetFrame(mux, i, &frame) != WEBP_MUX_OK) {
goto error;
}
/* Decode the frame */
outdata = WebPDecodeRGBA(frame.bitstream.bytes,
frame.bitstream.size,
&width, &height);
/* Free the compressed data */
WebPDataClear(&frame.bitstream);
if (!outdata) {
goto error;
}
/* Create a layer for the frame */
char name[255];
snprintf(name, 255, "Frame %d", (i + 1));
if (create_layer(*image_ID,
outdata,
0,
(gchar*)name,
width, height,
frame.x_offset,
frame.y_offset) == FALSE) {
goto error;
}
}
/* If all is well, jump *over* the error label - otherwise
leave the loop and begin cleaning things up */
goto success;
error:
break;
success: ;
} else {
#endif
/* Attempt to decode the data as a WebP image */
outdata = WebPDecodeRGBA(indata, indatalen, &width, &height);
if (!outdata) {
break;
}
/* Create a single layer */
status = create_layer(*image_ID,
outdata,
0,
"Background",
width, height,
0, 0);
#ifdef WEBP_0_5
}
#ifdef GIMP_2_9
/* Load a color profile if one was provided */
if (flags & ICCP_FLAG) {
WebPData icc_profile;
GimpColorProfile *profile;
/* Load the ICC profile from the file */
WebPMuxGetChunk(mux, "ICCP", &icc_profile);
/* Have Gimp load the color profile */
profile = gimp_color_profile_new_from_icc_profile(
icc_profile.bytes, icc_profile.size, NULL);
if (profile) {
gimp_image_set_color_profile(image_ID, profile);
g_object_unref(profile);
}
}
#endif
#endif
/* Set the filename for the image */
gimp_image_set_filename(*image_ID, filename);
} while(0);
/* Delete the mux object */
if (mux) {
WebPMuxDelete(mux);
}
/* Free the data read from disk */
if (indata) {
g_free(indata);
}
return status;
}
GDALDataset *WEBPDataset::Open( GDALOpenInfo * poOpenInfo )
{
if( !Identify( poOpenInfo ) )
return NULL;
int nWidth, nHeight;
if (!WebPGetInfo((const uint8_t*)poOpenInfo->pabyHeader, (uint32_t)poOpenInfo->nHeaderBytes,
&nWidth, &nHeight))
return NULL;
if( poOpenInfo->eAccess == GA_Update )
{
CPLError( CE_Failure, CPLE_NotSupported,
"The WEBP driver does not support update access to existing"
" datasets.\n" );
return NULL;
}
/* -------------------------------------------------------------------- */
/* Open the file using the large file api. */
/* -------------------------------------------------------------------- */
VSILFILE* fpImage = VSIFOpenL( poOpenInfo->pszFilename, "rb" );
if( fpImage == NULL )
return NULL;
GByte* pabyUncompressed = (GByte*)VSIMalloc3(nWidth, nHeight, 3);
if (pabyUncompressed == NULL)
{
VSIFCloseL(fpImage);
return NULL;
}
/* -------------------------------------------------------------------- */
/* Create a corresponding GDALDataset. */
/* -------------------------------------------------------------------- */
WEBPDataset *poDS;
poDS = new WEBPDataset();
poDS->nRasterXSize = nWidth;
poDS->nRasterYSize = nHeight;
poDS->fpImage = fpImage;
poDS->pabyUncompressed = pabyUncompressed;
/* -------------------------------------------------------------------- */
/* Create band information objects. */
/* -------------------------------------------------------------------- */
for( int iBand = 0; iBand < 3; iBand++ )
poDS->SetBand( iBand+1, new WEBPRasterBand( poDS, iBand+1 ) );
/* -------------------------------------------------------------------- */
/* Initialize any PAM information. */
/* -------------------------------------------------------------------- */
poDS->SetDescription( poOpenInfo->pszFilename );
poDS->TryLoadXML( poOpenInfo->papszSiblingFiles );
/* -------------------------------------------------------------------- */
/* Open overviews. */
/* -------------------------------------------------------------------- */
poDS->oOvManager.Initialize( poDS, poOpenInfo->pszFilename, poOpenInfo->papszSiblingFiles );
return poDS;
}
// Returns true if this is a valid WebP bitstream.
static int IsWebP(const WebPData* const webp_data) {
return (WebPGetInfo(webp_data->bytes, webp_data->size, NULL, NULL) != 0);
}
