static gboolean gst_webp_set_picture_params (GstWebpEnc * enc) { GstVideoInfo *info; gboolean ret = TRUE; info = &enc->input_state->info; if (!WebPPictureInit (&enc->webp_picture)) { ret = FALSE; goto failed_pic_init; } enc->webp_picture.use_argb = enc->use_argb; if (!enc->use_argb) enc->webp_picture.colorspace = enc->webp_color_space; enc->webp_picture.width = GST_VIDEO_INFO_WIDTH (info); enc->webp_picture.height = GST_VIDEO_INFO_HEIGHT (info); WebPMemoryWriterInit (&enc->webp_writer); enc->webp_picture.writer = WebPMemoryWrite; enc->webp_picture.custom_ptr = &enc->webp_writer; return ret; failed_pic_init: { GST_ERROR_OBJECT (enc, "Failed to Initialize WebPPicture !"); return ret; } }
static bool encodePixels(IntSize imageSize, const unsigned char* pixels, bool premultiplied, int quality, Vector<unsigned char>* output) { if (imageSize.width() <= 0 || imageSize.width() > WEBP_MAX_DIMENSION) return false; if (imageSize.height() <= 0 || imageSize.height() > WEBP_MAX_DIMENSION) return false; WebPConfig config; if (!WebPConfigInit(&config)) return false; WebPPicture picture; if (!WebPPictureInit(&picture)) return false; picture.width = imageSize.width(); picture.height = imageSize.height(); if (premultiplied && !platformPremultipliedImportPicture(pixels, &picture)) return false; if (!premultiplied && !importPictureRGBX<false>(pixels, &picture)) return false; picture.custom_ptr = output; picture.writer = &writeOutput; config.quality = quality; config.method = 3; bool success = WebPEncode(&config, &picture); WebPPictureFree(&picture); return success; }
static size_t encode(const uint8_t* rgba, int width, int height, uint8_t** output) { WebPPicture pic; WebPConfig config; WebPMemoryWriter wrt; int ok; if (!WebPConfigPreset(&config, WEBP_PRESET_DEFAULT, 100) || !WebPPictureInit(&pic)) { return 0; } config.lossless = true; config.method = 6; pic.use_argb = true; pic.width = width; pic.height = height; pic.writer = WebPMemoryWrite; pic.custom_ptr = &wrt; WebPMemoryWriterInit(&wrt); ok = WebPPictureImportRGBA(&pic, rgba, width * 4) && WebPEncode(&config, &pic); WebPPictureFree(&pic); if (!ok) return 0; *output = wrt.mem; return wrt.size; }
int WebPPictureDistortion(const WebPPicture* src, const WebPPicture* ref, int type, float results[5]) { int w, h, c; int ok = 0; WebPPicture p0, p1; double total_size = 0., total_distortion = 0.; if (src == NULL || ref == NULL || src->width != ref->width || src->height != ref->height || results == NULL) { return 0; } VP8SSIMDspInit(); if (!WebPPictureInit(&p0) || !WebPPictureInit(&p1)) return 0; w = src->width; h = src->height; if (!WebPPictureView(src, 0, 0, w, h, &p0)) goto Error; if (!WebPPictureView(ref, 0, 0, w, h, &p1)) goto Error; // We always measure distortion in ARGB space. if (p0.use_argb == 0 && !WebPPictureYUVAToARGB(&p0)) goto Error; if (p1.use_argb == 0 && !WebPPictureYUVAToARGB(&p1)) goto Error; for (c = 0; c < 4; ++c) { float distortion; const size_t stride0 = 4 * (size_t)p0.argb_stride; const size_t stride1 = 4 * (size_t)p1.argb_stride; if (!WebPPlaneDistortion((const uint8_t*)p0.argb + c, stride0, (const uint8_t*)p1.argb + c, stride1, w, h, 4, type, &distortion, results + c)) { goto Error; } total_distortion += distortion; total_size += w * h; } results[4] = (type == 1) ? (float)GetLogSSIM(total_distortion, total_size) : (float)GetPSNR(total_distortion, total_size); ok = 1; Error: WebPPictureFree(&p0); WebPPictureFree(&p1); return ok; }
bool WebpOutput::open (const std::string &name, const ImageSpec &spec, OpenMode mode) { if (mode != Create) { error ("%s does not support subimages or MIP levels", format_name()); return false; } // saving 'name' and 'spec' for later use m_filename = name; stash_spec(spec); m_file = fopen (m_filename.c_str (), "wb"); if (!m_file) { error ("Unable to open file \"%s\"", m_filename.c_str ()); return false; } if (!WebPPictureInit(&m_webp_picture)) { error("Couldn't initialize WebPPicture\n"); close(); return false; } m_webp_picture.width = m_spec.width; m_webp_picture.height = m_spec.height; m_webp_picture.writer = WebpImageWriter; m_webp_picture.custom_ptr = (void*)m_file; if (!WebPConfigInit(&m_webp_config)) { error("Couldn't initialize WebPPicture\n"); close(); return false; } m_webp_config.method = 6; int compression_quality = 100; const ImageIOParameter *qual = m_spec.find_attribute ("CompressionQuality", TypeDesc::INT); if (qual) { compression_quality = *static_cast<const int*>(qual->data()); } m_webp_config.quality = compression_quality; // forcing UINT8 format m_spec.set_format (TypeDesc::UINT8); m_scanline_size = m_spec.width * m_spec.nchannels; const int image_buffer = m_spec.height * m_scanline_size; m_uncompressed_image.resize(image_buffer, 0); return true; }
// Encoder functions PyObject* _anim_encoder_new(PyObject* self, PyObject* args) { int width, height; uint32_t bgcolor; int loop_count; int minimize_size; int kmin, kmax; int allow_mixed; int verbose; WebPAnimEncoderOptions enc_options; WebPAnimEncoderObject* encp = NULL; WebPAnimEncoder* enc = NULL; if (!PyArg_ParseTuple(args, "iiIiiiiii", &width, &height, &bgcolor, &loop_count, &minimize_size, &kmin, &kmax, &allow_mixed, &verbose)) { return NULL; } // Setup and configure the encoder's options (these are animation-specific) if (!WebPAnimEncoderOptionsInit(&enc_options)) { PyErr_SetString(PyExc_RuntimeError, "failed to initialize encoder options"); return NULL; } enc_options.anim_params.bgcolor = bgcolor; enc_options.anim_params.loop_count = loop_count; enc_options.minimize_size = minimize_size; enc_options.kmin = kmin; enc_options.kmax = kmax; enc_options.allow_mixed = allow_mixed; enc_options.verbose = verbose; // Validate canvas dimensions if (width <= 0 || height <= 0) { PyErr_SetString(PyExc_ValueError, "invalid canvas dimensions"); return NULL; } // Create a new animation encoder and picture frame encp = PyObject_New(WebPAnimEncoderObject, &WebPAnimEncoder_Type); if (encp) { if (WebPPictureInit(&(encp->frame))) { enc = WebPAnimEncoderNew(width, height, &enc_options); if (enc) { encp->enc = enc; return (PyObject*) encp; } WebPPictureFree(&(encp->frame)); } PyObject_Del(encp); } PyErr_SetString(PyExc_RuntimeError, "could not create encoder object"); return NULL; }
static gboolean export_webp (GeglOperation *operation, GeglBuffer *input, const GeglRectangle *result, GOutputStream *stream) { GeglProperties *o = GEGL_PROPERTIES (operation); WebPConfig config; WebPPicture picture; const Babl *format; gint status; g_return_val_if_fail (stream != NULL, FALSE); if (!WebPConfigInit (&config) || !WebPPictureInit (&picture)) { g_warning ("could not initialize WebP encoder"); return FALSE; } if (!WebPConfigPreset (&config, WEBP_PRESET_DEFAULT, o->quality)) { g_warning("could not load WebP default preset"); return FALSE; } picture.width = result->width; picture.height = result->height; format = babl_format ("R'G'B'A u8"); if (!WebPValidateConfig (&config)) { g_warning ("WebP encoder configuration is invalid"); return FALSE; } picture.writer = write_to_stream; picture.custom_ptr = stream; if (save_RGBA (&picture, input, result, format)) { g_warning ("could not pass pixels data to WebP encoder"); return FALSE; } status = WebPEncode (&config, &picture); WebPPictureFree (&picture); return status ? TRUE : FALSE; }
static int EncodeLossless(const uint8_t* const data, int width, int height, int effort_level, // in [0..6] range VP8BitWriter* const bw, WebPAuxStats* const stats) { int ok = 0; WebPConfig config; WebPPicture picture; VP8LBitWriter tmp_bw; WebPPictureInit(&picture); picture.width = width; picture.height = height; picture.use_argb = 1; picture.stats = stats; if (!WebPPictureAlloc(&picture)) return 0; // Transfer the alpha values to the green channel. { int i, j; uint32_t* dst = picture.argb; const uint8_t* src = data; for (j = 0; j < picture.height; ++j) { for (i = 0; i < picture.width; ++i) { dst[i] = (src[i] << 8) | 0xff000000u; } src += width; dst += picture.argb_stride; } } WebPConfigInit(&config); config.lossless = 1; config.method = effort_level; // impact is very small // Set moderate default quality setting for alpha. Higher qualities (80 and // above) could be very slow. config.quality = 10.f + 15.f * effort_level; if (config.quality > 100.f) config.quality = 100.f; ok = VP8LBitWriterInit(&tmp_bw, (width * height) >> 3); ok = ok && (VP8LEncodeStream(&config, &picture, &tmp_bw) == VP8_ENC_OK); WebPPictureFree(&picture); if (ok) { const uint8_t* const data = VP8LBitWriterFinish(&tmp_bw); const size_t data_size = VP8LBitWriterNumBytes(&tmp_bw); VP8BitWriterAppend(bw, data, data_size); } VP8LBitWriterDestroy(&tmp_bw); return ok && !bw->error_; }
static int EncodeLossless(const uint8_t* const data, int width, int height, int effort_level, // in [0..6] range VP8LBitWriter* const bw, WebPAuxStats* const stats) { int ok = 0; WebPConfig config; WebPPicture picture; WebPPictureInit(&picture); picture.width = width; picture.height = height; picture.use_argb = 1; picture.stats = stats; if (!WebPPictureAlloc(&picture)) return 0; // Transfer the alpha values to the green channel. { int i, j; uint32_t* dst = picture.argb; const uint8_t* src = data; for (j = 0; j < picture.height; ++j) { for (i = 0; i < picture.width; ++i) { dst[i] = src[i] << 8; // we leave A/R/B channels zero'd. } src += width; dst += picture.argb_stride; } } WebPConfigInit(&config); config.lossless = 1; config.method = effort_level; // impact is very small // Set a low default quality for encoding alpha. Ensure that Alpha quality at // lower methods (3 and below) is less than the threshold for triggering // costly 'BackwardReferencesTraceBackwards'. config.quality = 8.f * effort_level; assert(config.quality >= 0 && config.quality <= 100.f); ok = (VP8LEncodeStream(&config, &picture, bw) == VP8_ENC_OK); WebPPictureFree(&picture); ok = ok && !bw->error_; if (!ok) { VP8LBitWriterDestroy(bw); return 0; } return 1; }
static int EncodeLossless(const uint8_t* const data, int width, int height, int effort_level, // in [0..6] range VP8LBitWriter* const bw, WebPAuxStats* const stats) { int ok = 0; WebPConfig config; WebPPicture picture; WebPPictureInit(&picture); picture.width = width; picture.height = height; picture.use_argb = 1; picture.stats = stats; if (!WebPPictureAlloc(&picture)) return 0; // Transfer the alpha values to the green channel. WebPDispatchAlphaToGreen(data, width, picture.width, picture.height, picture.argb, picture.argb_stride); WebPConfigInit(&config); config.lossless = 1; // Enable exact, or it would alter RGB values of transparent alpha, which is // normally OK but not here since we are not encoding the input image but an // internal encoding-related image containing necessary exact information in // RGB channels. config.exact = 1; config.method = effort_level; // impact is very small // Set a low default quality for encoding alpha. Ensure that Alpha quality at // lower methods (3 and below) is less than the threshold for triggering // costly 'BackwardReferencesTraceBackwards'. config.quality = 8.f * effort_level; assert(config.quality >= 0 && config.quality <= 100.f); // TODO(urvang): Temporary fix to avoid generating images that trigger // a decoder bug related to alpha with color cache. // See: https://code.google.com/p/webp/issues/detail?id=239 // Need to re-enable this later. ok = (VP8LEncodeStream(&config, &picture, bw, 0 /*use_cache*/) == VP8_ENC_OK); WebPPictureFree(&picture); ok = ok && !bw->error_; if (!ok) { VP8LBitWriterWipeOut(bw); return 0; } return 1; }
void save_as_webp(T1& file, T2 const& image, WebPConfig const& config, bool alpha) { bool valid = WebPValidateConfig(&config); if (!valid) { throw std::runtime_error("Invalid configuration"); } WebPPicture pic; if (!WebPPictureInit(&pic)) { throw std::runtime_error("version mismatch"); } pic.width = image.width(); pic.height = image.height(); int ok = 0; #if (WEBP_ENCODER_ABI_VERSION >> 8) >= 1 pic.use_argb = !!config.lossless; // lossless fast track if (pic.use_argb) { pic.colorspace = static_cast<WebPEncCSP>(pic.colorspace | WEBP_CSP_ALPHA_BIT); if (WebPPictureAlloc(&pic)) { ok = 1; const int width = pic.width; const int height = pic.height; for (int y = 0; y < height; ++y) { typename T2::pixel_type const * row = image.getRow(y); for (int x = 0; x < width; ++x) { const unsigned rgba = row[x]; unsigned a = (rgba >> 24) & 0xff; unsigned r = rgba & 0xff; unsigned g = (rgba >> 8 ) & 0xff; unsigned b = (rgba >> 16) & 0xff; const uint32_t argb = (a << 24) | (r << 16) | (g << 8) | (b); pic.argb[x + y * pic.argb_stride] = argb; } } }
int main(int argc, const char *argv[]) { int verbose = 0; int gif_error = GIF_ERROR; WebPMuxError err = WEBP_MUX_OK; int ok = 0; const char *in_file = NULL, *out_file = NULL; FILE* out = NULL; GifFileType* gif = NULL; int frame_duration = 0; int frame_timestamp = 0; GIFDisposeMethod orig_dispose = GIF_DISPOSE_NONE; WebPPicture frame; // Frame rectangle only (not disposed). WebPPicture curr_canvas; // Not disposed. WebPPicture prev_canvas; // Disposed. WebPPicture prev_to_prev_canvas; // Disposed. WebPAnimEncoder* enc = NULL; WebPAnimEncoderOptions enc_options; WebPConfig config; int is_first_frame = 1; // Whether we are processing the first frame. int done; int c; int quiet = 0; WebPData webp_data; int keep_metadata = METADATA_XMP; // ICC not output by default. WebPData icc_data; int stored_icc = 0; // Whether we have already stored an ICC profile. WebPData xmp_data; int stored_xmp = 0; // Whether we have already stored an XMP profile. int loop_count = 0; int stored_loop_count = 0; // Whether we have found an explicit loop count. WebPMux* mux = NULL; int default_kmin = 1; // Whether to use default kmin value. int default_kmax = 1; if (!WebPConfigInit(&config) || !WebPAnimEncoderOptionsInit(&enc_options) || !WebPPictureInit(&frame) || !WebPPictureInit(&curr_canvas) || !WebPPictureInit(&prev_canvas) || !WebPPictureInit(&prev_to_prev_canvas)) { fprintf(stderr, "Error! Version mismatch!\n"); return -1; } config.lossless = 1; // Use lossless compression by default. WebPDataInit(&webp_data); WebPDataInit(&icc_data); WebPDataInit(&xmp_data); if (argc == 1) { Help(); return 0; } for (c = 1; c < argc; ++c) { int parse_error = 0; if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) { Help(); return 0; } else if (!strcmp(argv[c], "-o") && c < argc - 1) { out_file = argv[++c]; } else if (!strcmp(argv[c], "-lossy")) { config.lossless = 0; } else if (!strcmp(argv[c], "-mixed")) { enc_options.allow_mixed = 1; config.lossless = 0; } else if (!strcmp(argv[c], "-q") && c < argc - 1) { config.quality = ExUtilGetFloat(argv[++c], &parse_error); } else if (!strcmp(argv[c], "-m") && c < argc - 1) { config.method = ExUtilGetInt(argv[++c], 0, &parse_error); } else if (!strcmp(argv[c], "-min_size")) { enc_options.minimize_size = 1; } else if (!strcmp(argv[c], "-kmax") && c < argc - 1) { enc_options.kmax = ExUtilGetInt(argv[++c], 0, &parse_error); default_kmax = 0; } else if (!strcmp(argv[c], "-kmin") && c < argc - 1) { enc_options.kmin = ExUtilGetInt(argv[++c], 0, &parse_error); default_kmin = 0; } else if (!strcmp(argv[c], "-f") && c < argc - 1) { config.filter_strength = ExUtilGetInt(argv[++c], 0, &parse_error); } else if (!strcmp(argv[c], "-metadata") && c < argc - 1) { static const struct { const char* option; int flag; } kTokens[] = { { "all", METADATA_ALL }, { "none", 0 }, { "icc", METADATA_ICC }, { "xmp", METADATA_XMP }, }; const size_t kNumTokens = sizeof(kTokens) / sizeof(*kTokens); const char* start = argv[++c]; const char* const end = start + strlen(start); keep_metadata = 0; while (start < end) { size_t i; const char* token = strchr(start, ','); if (token == NULL) token = end; for (i = 0; i < kNumTokens; ++i) { if ((size_t)(token - start) == strlen(kTokens[i].option) && !strncmp(start, kTokens[i].option, strlen(kTokens[i].option))) { if (kTokens[i].flag != 0) { keep_metadata |= kTokens[i].flag; } else { keep_metadata = 0; } break; } } if (i == kNumTokens) { fprintf(stderr, "Error! Unknown metadata type '%.*s'\n", (int)(token - start), start); Help(); return -1; } start = token + 1; } } else if (!strcmp(argv[c], "-mt")) { ++config.thread_level; } else if (!strcmp(argv[c], "-version")) { const int enc_version = WebPGetEncoderVersion(); const int mux_version = WebPGetMuxVersion(); printf("WebP Encoder version: %d.%d.%d\nWebP Mux version: %d.%d.%d\n", (enc_version >> 16) & 0xff, (enc_version >> 8) & 0xff, enc_version & 0xff, (mux_version >> 16) & 0xff, (mux_version >> 8) & 0xff, mux_version & 0xff); return 0; } else if (!strcmp(argv[c], "-quiet")) { quiet = 1; } else if (!strcmp(argv[c], "-v")) { verbose = 1; enc_options.verbose = 1; } else if (!strcmp(argv[c], "--")) { if (c < argc - 1) in_file = argv[++c]; break; } else if (argv[c][0] == '-') { fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]); Help(); return -1; } else { in_file = argv[c]; } if (parse_error) { Help(); return -1; } }
int main(int argc, const char *argv[]) { int verbose = 0; int gif_error = GIF_ERROR; WebPMuxError err = WEBP_MUX_OK; int ok = 0; const char *in_file = NULL, *out_file = NULL; FILE* out = NULL; GifFileType* gif = NULL; WebPPicture picture; WebPPicture view; WebPMemoryWriter memory; WebPMuxFrameInfo frame; WebPMuxAnimParams anim = { WHITE_COLOR, 0 }; int is_first_frame = 1; int done; int c; int quiet = 0; WebPConfig config; WebPMux* mux = NULL; WebPData webp_data = { NULL, 0 }; int stored_icc = 0; // Whether we have already stored an ICC profile. int stored_xmp = 0; memset(&frame, 0, sizeof(frame)); frame.id = WEBP_CHUNK_ANMF; frame.dispose_method = WEBP_MUX_DISPOSE_BACKGROUND; if (!WebPConfigInit(&config) || !WebPPictureInit(&picture)) { fprintf(stderr, "Error! Version mismatch!\n"); return -1; } config.lossless = 1; // Use lossless compression by default. if (argc == 1) { Help(); return 0; } for (c = 1; c < argc; ++c) { if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) { Help(); return 0; } else if (!strcmp(argv[c], "-o") && c < argc - 1) { out_file = argv[++c]; } else if (!strcmp(argv[c], "-lossy")) { config.lossless = 0; } else if (!strcmp(argv[c], "-q") && c < argc - 1) { config.quality = (float)strtod(argv[++c], NULL); } else if (!strcmp(argv[c], "-m") && c < argc - 1) { config.method = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-f") && c < argc - 1) { config.filter_strength = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-version")) { const int enc_version = WebPGetEncoderVersion(); const int mux_version = WebPGetMuxVersion(); printf("WebP Encoder version: %d.%d.%d\nWebP Mux version: %d.%d.%d\n", (enc_version >> 16) & 0xff, (enc_version >> 8) & 0xff, enc_version & 0xff, (mux_version >> 16) & 0xff, (mux_version >> 8) & 0xff, mux_version & 0xff); return 0; } else if (!strcmp(argv[c], "-quiet")) { quiet = 1; } else if (!strcmp(argv[c], "-v")) { verbose = 1; } else if (argv[c][0] == '-') { fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]); Help(); return -1; } else { in_file = argv[c]; } }
/** Encode a FIBITMAP to a WebP image @param hmem Memory output stream, containing on return the encoded image @param dib The FIBITMAP to encode @param flags FreeImage save flags @return Returns TRUE if successfull, returns FALSE otherwise */ static BOOL EncodeImage(FIMEMORY *hmem, FIBITMAP *dib, int flags) { WebPPicture picture; // Input buffer WebPConfig config; // Coding parameters BOOL bIsFlipped = FALSE; try { const unsigned width = FreeImage_GetWidth(dib); const unsigned height = FreeImage_GetHeight(dib); const unsigned bpp = FreeImage_GetBPP(dib); const unsigned pitch = FreeImage_GetPitch(dib); // check image type FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(dib); if( !((image_type == FIT_BITMAP) && ((bpp == 24) || (bpp == 32))) ) { throw FI_MSG_ERROR_UNSUPPORTED_FORMAT; } // check format limits if(MAX(width, height) > WEBP_MAX_DIMENSION) { FreeImage_OutputMessageProc(s_format_id, "Unsupported image size: width x height = %d x %d", width, height); return FALSE; } // Initialize output I/O if(WebPPictureInit(&picture) == 1) { picture.writer = WebP_MemoryWriter; picture.custom_ptr = hmem; picture.width = (int)width; picture.height = (int)height; } else { throw "Couldn't initialize WebPPicture"; } // --- Set encoding parameters --- // Initialize encoding parameters to default values WebPConfigInit(&config); // quality/speed trade-off (0=fast, 6=slower-better) config.method = 6; if((flags & WEBP_LOSSLESS) == WEBP_LOSSLESS) { // lossless encoding config.lossless = 1; picture.use_argb = 1; } else if((flags & 0x7F) > 0) { // lossy encoding config.lossless = 0; // quality is between 1 (smallest file) and 100 (biggest) - default to 75 config.quality = (float)(flags & 0x7F); if(config.quality > 100) { config.quality = 100; } } // validate encoding parameters if(WebPValidateConfig(&config) == 0) { throw "Failed to initialize encoder"; } // --- Perform encoding --- // Invert dib scanlines bIsFlipped = FreeImage_FlipVertical(dib); // convert dib buffer to output stream const BYTE *bits = FreeImage_GetBits(dib); #if FREEIMAGE_COLORORDER == FREEIMAGE_COLORORDER_BGR switch(bpp) { case 24: WebPPictureImportBGR(&picture, bits, pitch); break; case 32: WebPPictureImportBGRA(&picture, bits, pitch); break; } #else switch(bpp) { case 24: WebPPictureImportRGB(&picture, bits, pitch); break; case 32: WebPPictureImportRGBA(&picture, bits, pitch); break; } #endif // FREEIMAGE_COLORORDER == FREEIMAGE_COLORORDER_BGR if(!WebPEncode(&config, &picture)) { throw "Failed to encode image"; } WebPPictureFree(&picture); if(bIsFlipped) { // invert dib scanlines FreeImage_FlipVertical(dib); } return TRUE; } catch (const char* text) { WebPPictureFree(&picture); if(bIsFlipped) { // invert dib scanlines FreeImage_FlipVertical(dib); } if(NULL != text) { FreeImage_OutputMessageProc(s_format_id, text); } } return FALSE; }
bool QWebpHandler::write(const QImage &image) { if (image.isNull()) { qWarning() << "source image is null."; return false; } QImage srcImage = image; #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN if (srcImage.format() != QImage::Format_ARGB32) srcImage = srcImage.convertToFormat(QImage::Format_ARGB32); #else /* Q_BIG_ENDIAN */ if (srcImage.format() != QImage::Format_RGBA8888) srcImage = srcImage.convertToFormat(QImage::Format_RGBA8888); #endif WebPPicture picture; WebPConfig config; if (!WebPPictureInit(&picture) || !WebPConfigInit(&config)) { qWarning() << "failed to init webp picture and config"; return false; } picture.width = srcImage.width(); picture.height = srcImage.height(); picture.use_argb = 1; #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN if (!WebPPictureImportBGRA(&picture, srcImage.bits(), srcImage.bytesPerLine())) { #else /* Q_BIG_ENDIAN */ if (!WebPPictureImportRGBA(&picture, srcImage.bits(), srcImage.bytesPerLine())) { #endif qWarning() << "failed to import image data to webp picture."; WebPPictureFree(&picture); return false; } config.lossless = m_lossless; config.quality = m_quality; picture.writer = pictureWriter; picture.custom_ptr = device(); if (!WebPEncode(&config, &picture)) { qWarning() << "failed to encode webp picture, error code: " << picture.error_code; WebPPictureFree(&picture); return false; } WebPPictureFree(&picture); return true; } QVariant QWebpHandler::option(ImageOption option) const { if (!supportsOption(option) || !ensureScanned()) return QVariant(); switch (option) { case Quality: return m_quality; case Size: return QSize(m_width, m_height); case Animation: return (m_flags & ANIMATION_FLAG) == ANIMATION_FLAG; default: return QVariant(); } } void QWebpHandler::setOption(ImageOption option, const QVariant &value) { switch (option) { case Quality: m_quality = qBound(0, value.toInt(), 100); m_lossless = (m_quality >= 100); return; default: break; } return QImageIOHandler::setOption(option, value); } bool QWebpHandler::supportsOption(ImageOption option) const { return option == Quality || option == Size || option == Animation; } QByteArray QWebpHandler::name() const { return QByteArrayLiteral("webp"); } int QWebpHandler::imageCount() const { if (!ensureScanned()) return 0; if ((m_flags & ANIMATION_FLAG) == 0) return 1; return m_frameCount; } int QWebpHandler::currentImageNumber() const { if (!ensureScanned()) return 0; return m_iter.frame_num; } QRect QWebpHandler::currentImageRect() const { if (!ensureScanned()) return QRect(); return QRect(m_iter.x_offset, m_iter.y_offset, m_iter.width, m_iter.height); } bool QWebpHandler::jumpToImage(int imageNumber) { if (!ensureScanned()) return false; WebPDemuxReleaseIterator(&m_iter); return WebPDemuxGetFrame(m_demuxer, imageNumber, &m_iter); } bool QWebpHandler::jumpToNextImage() { if (!ensureScanned()) return false; return WebPDemuxNextFrame(&m_iter); } int QWebpHandler::loopCount() const { if (!ensureScanned() || (m_flags & ANIMATION_FLAG) == 0) return 0; return m_loop; } int QWebpHandler::nextImageDelay() const { if (!ensureScanned()) return 0; return m_iter.duration; }
int encodeWEBP(Vbitmap *vbitmap, Ychannel *channelout, YmagineFormatOptions *options) { int rc = YMAGINE_ERROR; #if HAVE_WEBP WebPConfig config; WebPPicture picture; WebPPreset preset = WEBP_PRESET_PHOTO; // One of DEFAULT, PICTURE, PHOTO, DRAWING, ICON or TEXT int width; int height; int pitch; int quality; const unsigned char *pixels; int colormode; /* * List of encoding options for WebP config * int lossless; // Lossless encoding (0=lossy(default), 1=lossless). * float quality; // between 0 (smallest file) and 100 (biggest) * int method; // quality/speed trade-off (0=fast, 6=slower-better) * * WebPImageHint image_hint; // Hint for image type (lossless only for now). * * // Parameters related to lossy compression only: * int target_size; // if non-zero, set the desired target size in bytes. * // Takes precedence over the 'compression' parameter. * float target_PSNR; // if non-zero, specifies the minimal distortion to * // try to achieve. Takes precedence over target_size. * int segments; // maximum number of segments to use, in [1..4] * int sns_strength; // Spatial Noise Shaping. 0=off, 100=maximum. * int filter_strength; // range: [0 = off .. 100 = strongest] * int filter_sharpness; // range: [0 = off .. 7 = least sharp] * int filter_type; // filtering type: 0 = simple, 1 = strong (only used * // if filter_strength > 0 or autofilter > 0) * int autofilter; // Auto adjust filter's strength [0 = off, 1 = on] * int alpha_compression; // Algorithm for encoding the alpha plane (0 = none, * // 1 = compressed with WebP lossless). Default is 1. * int alpha_filtering; // Predictive filtering method for alpha plane. * // 0: none, 1: fast, 2: best. Default if 1. * int alpha_quality; // Between 0 (smallest size) and 100 (lossless). * // Default is 100. * int pass; // number of entropy-analysis passes (in [1..10]). * * int show_compressed; // if true, export the compressed picture back. * // In-loop filtering is not applied. * int preprocessing; // preprocessing filter (0=none, 1=segment-smooth) * int partitions; // log2(number of token partitions) in [0..3] * // Default is set to 0 for easier progressive decoding. * int partition_limit; // quality degradation allowed to fit the 512k limit on * // prediction modes coding (0: no degradation, * // 100: maximum possible degradation). */ colormode = VbitmapColormode(vbitmap); if (colormode != VBITMAP_COLOR_RGBA && colormode != VBITMAP_COLOR_RGB) { ALOGD("currently only support RGB, RGBA webp encoding"); return rc; } quality = YmagineFormatOptions_normalizeQuality(options); if (!WebPConfigPreset(&config, preset, (float) quality)) { return YMAGINE_ERROR; // version error } if (options && options->accuracy >= 0) { int method = options->accuracy / 15; if (method > 6) { method = 6; } config.method = method; } if (!WebPValidateConfig(&config)) { // parameter ranges verification failed return YMAGINE_ERROR; } rc = VbitmapLock(vbitmap); if (rc < 0) { ALOGE("AndroidBitmap_lockPixels() failed"); return YMAGINE_ERROR; } width = VbitmapWidth(vbitmap); height = VbitmapHeight(vbitmap); pitch = VbitmapPitch(vbitmap); pixels = VbitmapBuffer(vbitmap); if (WebPPictureInit(&picture)) { picture.use_argb = 1; picture.width = width; picture.height = height; picture.writer = WebPYchannelWrite; picture.custom_ptr = channelout; if (colormode == VBITMAP_COLOR_RGBA) { WebPPictureImportRGBA(&picture, pixels, pitch); } else { WebPPictureImportRGB(&picture, pixels, pitch); } WebPEncode(&config, &picture); WebPPictureFree(&picture); } VbitmapUnlock(vbitmap); rc = YMAGINE_OK; #endif return rc; }
/** * Convert bitmap object from Android code to WebP format. Save to file. */ jint Java_com_tbliss_android_seniorproject_webpconv_WebPConv_doConvJniGraphics2( JNIEnv* env, jobject javaThis, jobject jbitmap, jfloat jqualityFactor, jstring filename) { int ret = 0; float cqualityFactor; int stride, width, height; void* pixels; // pointer to address of bitmap int outputSize = 0; AndroidBitmapInfo bitmapInfo; uint8_t* outputPointer; uint8_t* cbitmapPointer; WebPConfig config; WebPMemoryWriter wrt; size_t dataWritten = 0; int bytesWritten = 0; FILE* fileout = NULL; const char* fname = (*env)->GetStringUTFChars(env, filename, NULL); // Get Bitmap info (height/width/stride) if ((ret = AndroidBitmap_getInfo(env, jbitmap, &bitmapInfo)) < 0){ LOGV("Could not get Bitmap info. error=%d", ret); return 0; } width = (int)bitmapInfo.width; height = (int)bitmapInfo.height; stride = (int)bitmapInfo.stride; // width * 4 LOGV("Bitmap: width=%d, height=%d, stride=%d, format=%d", width, height, stride, bitmapInfo.format); // Lock Bitmap pixels if ((ret = AndroidBitmap_lockPixels(env, jbitmap, &pixels)) < 0) { LOGV("AndroidBitmap_lockPixels() failed ! error=%d", ret); return 0; } cbitmapPointer = (uint8_t*)pixels; outputSize = stride * height; LOGV("output_size: %d", outputSize); outputPointer = (uint8_t*) malloc(outputSize); cqualityFactor = (float)jqualityFactor; // Setup a config if (!WebPConfigPreset(&config, WEBP_PRESET_PICTURE, cqualityFactor)) { LOGV("WebPConfigPreset failed"); return 0; // version error } // ... additional tuning config.method = 1; LOGV("config.method = %d", config.method); if (WebPValidateConfig(&config) != 1) { LOGV("Error with config"); } // Setup the input data WebPPicture pic; if (!WebPPictureInit(&pic)) { LOGV("WebPPictureInit failed"); return 0; // version error } pic.width = width; pic.height = height; if (!WebPPictureImportRGBA(&pic, cbitmapPointer, stride)) { LOGV("WebPPictureImportRGB failed"); return 0; } // Set up a byte-output write method. WebPMemoryWriter, for instance. pic.writer = MyMemoryWriter; pic.custom_ptr = &wrt; //InitMemoryWriter(&wrt); wrt.mem = &outputPointer; wrt.size = &dataWritten; wrt.max_size = outputSize; // Compress! ret = WebPEncode(&config, &pic); // ok = 0 => error occurred! if (!ret) { LOGV("ret == 0, WebPEncode fail"); } WebPPictureFree(&pic); // must be called independently of the 'ok' result. // Write to phone fileout = fopen(fname, "wb"); if(!fileout){ LOGV("cannot open output file %s", fname); return 0; } bytesWritten = fwrite(outputPointer, 1, dataWritten, fileout); LOGV("bytesWritten: %d", bytesWritten); // Unlock pixels of Bitmap fclose(fileout); AndroidBitmap_unlockPixels(env, jbitmap); free(outputPointer); (*env)->ReleaseStringUTFChars(env, filename, fname); return dataWritten; }
WebPAnimEncoder* WebPAnimEncoderNewInternal( int width, int height, const WebPAnimEncoderOptions* enc_options, int abi_version) { WebPAnimEncoder* enc; if (WEBP_ABI_IS_INCOMPATIBLE(abi_version, WEBP_MUX_ABI_VERSION)) { return NULL; } if (width <= 0 || height <= 0 || (width * (uint64_t)height) >= MAX_IMAGE_AREA) { return NULL; } enc = (WebPAnimEncoder*)WebPSafeCalloc(1, sizeof(*enc)); if (enc == NULL) return NULL; // sanity inits, so we can call WebPAnimEncoderDelete(): enc->encoded_frames_ = NULL; enc->mux_ = NULL; // Dimensions and options. *(int*)&enc->canvas_width_ = width; *(int*)&enc->canvas_height_ = height; if (enc_options != NULL) { *(WebPAnimEncoderOptions*)&enc->options_ = *enc_options; SanitizeEncoderOptions((WebPAnimEncoderOptions*)&enc->options_); } else { DefaultEncoderOptions((WebPAnimEncoderOptions*)&enc->options_); } // Canvas buffers. if (!WebPPictureInit(&enc->curr_canvas_copy_) || !WebPPictureInit(&enc->prev_canvas_) || !WebPPictureInit(&enc->prev_canvas_disposed_)) { return NULL; } enc->curr_canvas_copy_.width = width; enc->curr_canvas_copy_.height = height; enc->curr_canvas_copy_.use_argb = 1; if (!WebPPictureAlloc(&enc->curr_canvas_copy_) || !WebPPictureCopy(&enc->curr_canvas_copy_, &enc->prev_canvas_) || !WebPPictureCopy(&enc->curr_canvas_copy_, &enc->prev_canvas_disposed_)) { goto Err; } WebPUtilClearPic(&enc->prev_canvas_, NULL); enc->curr_canvas_copy_modified_ = 1; // Encoded frames. ResetCounters(enc); // Note: one extra storage is for the previous frame. enc->size_ = enc->options_.kmax - enc->options_.kmin + 1; // We need space for at least 2 frames. But when kmin, kmax are both zero, // enc->size_ will be 1. So we handle that special case below. if (enc->size_ < 2) enc->size_ = 2; enc->encoded_frames_ = (EncodedFrame*)WebPSafeCalloc(enc->size_, sizeof(*enc->encoded_frames_)); if (enc->encoded_frames_ == NULL) goto Err; enc->mux_ = WebPMuxNew(); if (enc->mux_ == NULL) goto Err; enc->count_since_key_frame_ = 0; enc->first_timestamp_ = 0; enc->prev_timestamp_ = 0; enc->prev_candidate_undecided_ = 0; enc->is_first_frame_ = 1; enc->got_null_frame_ = 0; return enc; // All OK. Err: WebPAnimEncoderDelete(enc); return NULL; }
int main(int argc, const char *argv[]) { WebPPicture pic1, pic2; int ret = 1; float disto[5]; size_t size1 = 0, size2 = 0; int type = 0; int c; int help = 0; int keep_alpha = 0; int scale = 0; int use_gray = 0; const char* name1 = NULL; const char* name2 = NULL; const char* output = NULL; if (!WebPPictureInit(&pic1) || !WebPPictureInit(&pic2)) { fprintf(stderr, "Can't init pictures\n"); return 1; } for (c = 1; c < argc; ++c) { if (!strcmp(argv[c], "-ssim")) { type = 1; } else if (!strcmp(argv[c], "-psnr")) { type = 0; } else if (!strcmp(argv[c], "-alpha")) { keep_alpha = 1; } else if (!strcmp(argv[c], "-scale")) { scale = 1; } else if (!strcmp(argv[c], "-gray")) { use_gray = 1; } else if (!strcmp(argv[c], "-h")) { help = 1; ret = 0; } else if (!strcmp(argv[c], "-o")) { if (++c == argc) { fprintf(stderr, "missing file name after %s option.\n", argv[c - 1]); goto End; } output = argv[c]; } else if (name1 == NULL) { name1 = argv[c]; } else { name2 = argv[c]; } } if (help || name1 == NULL || name2 == NULL) { if (!help) { fprintf(stderr, "Error: missing arguments.\n"); } Help(); goto End; } if ((size1 = ReadPicture(name1, &pic1, 1)) == 0) { goto End; } if ((size2 = ReadPicture(name2, &pic2, 1)) == 0) { goto End; } if (!keep_alpha) { WebPBlendAlpha(&pic1, 0x00000000); WebPBlendAlpha(&pic2, 0x00000000); } if (!WebPPictureDistortion(&pic1, &pic2, type, disto)) { fprintf(stderr, "Error while computing the distortion.\n"); goto End; } printf("%u %.2f %.2f %.2f %.2f %.2f\n", (unsigned int)size1, disto[4], disto[0], disto[1], disto[2], disto[3]); if (output != NULL) { uint8_t* data = NULL; size_t data_size = 0; if (pic1.use_argb != pic2.use_argb) { fprintf(stderr, "Pictures are not in the same argb format. " "Can't save the difference map.\n"); goto End; } if (pic1.use_argb) { int n; fprintf(stderr, "max differences per channel: "); for (n = 0; n < 3; ++n) { // skip the alpha channel const int range = (type == 1) ? SSIMScaleChannel((uint8_t*)pic1.argb + n, pic1.argb_stride * 4, (const uint8_t*)pic2.argb + n, pic2.argb_stride * 4, 4, pic1.width, pic1.height, scale) : DiffScaleChannel((uint8_t*)pic1.argb + n, pic1.argb_stride * 4, (const uint8_t*)pic2.argb + n, pic2.argb_stride * 4, 4, pic1.width, pic1.height, scale); if (range < 0) fprintf(stderr, "\nError computing diff map\n"); fprintf(stderr, "[%d]", range); } fprintf(stderr, "\n"); if (use_gray) ConvertToGray(&pic1); } else { fprintf(stderr, "Can only compute the difference map in ARGB format.\n"); goto End; } data_size = WebPEncodeLosslessBGRA((const uint8_t*)pic1.argb, pic1.width, pic1.height, pic1.argb_stride * 4, &data); if (data_size == 0) { fprintf(stderr, "Error during lossless encoding.\n"); goto End; } ret = ImgIoUtilWriteFile(output, data, data_size) ? 0 : 1; WebPFree(data); if (ret) goto End; } ret = 0; End: WebPPictureFree(&pic1); WebPPictureFree(&pic2); return ret; }
int main(int argc, const char *argv[]) { int verbose = 0; int gif_error = GIF_ERROR; WebPMuxError err = WEBP_MUX_OK; int ok = 0; const char *in_file = NULL, *out_file = NULL; FILE* out = NULL; GifFileType* gif = NULL; WebPConfig config; WebPPicture frame; WebPMuxFrameInfo info; WebPMuxAnimParams anim = { WHITE_COLOR, 0 }; WebPFrameCache* cache = NULL; int is_first_frame = 1; // Whether we are processing the first frame. int done; int c; int quiet = 0; WebPMux* mux = NULL; WebPData webp_data = { NULL, 0 }; int keep_metadata = METADATA_XMP; // ICC not output by default. int stored_icc = 0; // Whether we have already stored an ICC profile. int stored_xmp = 0; int default_kmin = 1; // Whether to use default kmin value. int default_kmax = 1; size_t kmin = 0; size_t kmax = 0; int allow_mixed = 0; // If true, each frame can be lossy or lossless. ResetFrameInfo(&info); if (!WebPConfigInit(&config) || !WebPPictureInit(&frame)) { fprintf(stderr, "Error! Version mismatch!\n"); return -1; } config.lossless = 1; // Use lossless compression by default. config.image_hint = WEBP_HINT_GRAPH; // always low-color if (argc == 1) { Help(); return 0; } for (c = 1; c < argc; ++c) { int parse_error = 0; if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) { Help(); return 0; } else if (!strcmp(argv[c], "-o") && c < argc - 1) { out_file = argv[++c]; } else if (!strcmp(argv[c], "-lossy")) { config.lossless = 0; } else if (!strcmp(argv[c], "-mixed")) { allow_mixed = 1; config.lossless = 0; } else if (!strcmp(argv[c], "-q") && c < argc - 1) { config.quality = ExUtilGetFloat(argv[++c], &parse_error); } else if (!strcmp(argv[c], "-m") && c < argc - 1) { config.method = ExUtilGetInt(argv[++c], 0, &parse_error); } else if (!strcmp(argv[c], "-kmax") && c < argc - 1) { kmax = ExUtilGetUInt(argv[++c], 0, &parse_error); default_kmax = 0; } else if (!strcmp(argv[c], "-kmin") && c < argc - 1) { kmin = ExUtilGetUInt(argv[++c], 0, &parse_error); default_kmin = 0; } else if (!strcmp(argv[c], "-f") && c < argc - 1) { config.filter_strength = ExUtilGetInt(argv[++c], 0, &parse_error); } else if (!strcmp(argv[c], "-metadata") && c < argc - 1) { static const struct { const char* option; int flag; } kTokens[] = { { "all", METADATA_ALL }, { "none", 0 }, { "icc", METADATA_ICC }, { "xmp", METADATA_XMP }, }; const size_t kNumTokens = sizeof(kTokens) / sizeof(*kTokens); const char* start = argv[++c]; const char* const end = start + strlen(start); keep_metadata = 0; while (start < end) { size_t i; const char* token = strchr(start, ','); if (token == NULL) token = end; for (i = 0; i < kNumTokens; ++i) { if ((size_t)(token - start) == strlen(kTokens[i].option) && !strncmp(start, kTokens[i].option, strlen(kTokens[i].option))) { if (kTokens[i].flag != 0) { keep_metadata |= kTokens[i].flag; } else { keep_metadata = 0; } break; } } if (i == kNumTokens) { fprintf(stderr, "Error! Unknown metadata type '%.*s'\n", (int)(token - start), start); Help(); return -1; } start = token + 1; } } else if (!strcmp(argv[c], "-mt")) { ++config.thread_level; } else if (!strcmp(argv[c], "-version")) { const int enc_version = WebPGetEncoderVersion(); const int mux_version = WebPGetMuxVersion(); printf("WebP Encoder version: %d.%d.%d\nWebP Mux version: %d.%d.%d\n", (enc_version >> 16) & 0xff, (enc_version >> 8) & 0xff, enc_version & 0xff, (mux_version >> 16) & 0xff, (mux_version >> 8) & 0xff, mux_version & 0xff); return 0; } else if (!strcmp(argv[c], "-quiet")) { quiet = 1; } else if (!strcmp(argv[c], "-v")) { verbose = 1; } else if (!strcmp(argv[c], "--")) { if (c < argc - 1) in_file = argv[++c]; break; } else if (argv[c][0] == '-') { fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]); Help(); return -1; } else { in_file = argv[c]; } if (parse_error) { Help(); return -1; } }
int main(int argc, const char *argv[]) { const char *in_file = NULL, *out_file = NULL, *dump_file = NULL; FILE *out = NULL; int c; int short_output = 0; int quiet = 0; int keep_alpha = 0; int crop = 0, crop_x = 0, crop_y = 0, crop_w = 0, crop_h = 0; int resize_w = 0, resize_h = 0; WebPPicture picture; WebPConfig config; WebPAuxStats stats; Stopwatch stop_watch; #ifdef WEBP_EXPERIMENTAL_FEATURES keep_alpha = 1; #endif if (!WebPPictureInit(&picture) || !WebPConfigInit(&config)) { fprintf(stderr, "Error! Version mismatch!\n"); goto Error; } if (argc == 1) { HelpShort(); return 0; } for (c = 1; c < argc; ++c) { if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) { HelpShort(); return 0; } else if (!strcmp(argv[c], "-H") || !strcmp(argv[c], "-longhelp")) { HelpLong(); return 0; } else if (!strcmp(argv[c], "-o") && c < argc - 1) { out_file = argv[++c]; } else if (!strcmp(argv[c], "-d") && c < argc - 1) { dump_file = argv[++c]; config.show_compressed = 1; } else if (!strcmp(argv[c], "-short")) { short_output++; } else if (!strcmp(argv[c], "-s") && c < argc - 2) { picture.width = strtol(argv[++c], NULL, 0); picture.height = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-m") && c < argc - 1) { config.method = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-q") && c < argc - 1) { config.quality = (float)strtod(argv[++c], NULL); } else if (!strcmp(argv[c], "-size") && c < argc - 1) { config.target_size = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-psnr") && c < argc - 1) { config.target_PSNR = (float)strtod(argv[++c], NULL); } else if (!strcmp(argv[c], "-sns") && c < argc - 1) { config.sns_strength = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-f") && c < argc - 1) { config.filter_strength = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-af")) { config.autofilter = 1; } else if (!strcmp(argv[c], "-strong")) { config.filter_type = 1; } else if (!strcmp(argv[c], "-sharpness") && c < argc - 1) { config.filter_sharpness = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-pass") && c < argc - 1) { config.pass = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-pre") && c < argc - 1) { config.preprocessing = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-segments") && c < argc - 1) { config.segments = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-partition_limit") && c < argc - 1) { config.partition_limit = strtol(argv[++c], NULL, 0); #ifdef WEBP_EXPERIMENTAL_FEATURES } else if (!strcmp(argv[c], "-alpha_comp") && c < argc - 1) { config.alpha_compression = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-noalpha")) { keep_alpha = 0; #endif } else if (!strcmp(argv[c], "-map") && c < argc - 1) { picture.extra_info_type = strtol(argv[++c], NULL, 0); #ifdef WEBP_EXPERIMENTAL_FEATURES } else if (!strcmp(argv[c], "-444")) { picture.colorspace = WEBP_YUV444; } else if (!strcmp(argv[c], "-422")) { picture.colorspace = WEBP_YUV422; } else if (!strcmp(argv[c], "-gray")) { picture.colorspace = WEBP_YUV400; #endif } else if (!strcmp(argv[c], "-crop") && c < argc - 4) { crop = 1; crop_x = strtol(argv[++c], NULL, 0); crop_y = strtol(argv[++c], NULL, 0); crop_w = strtol(argv[++c], NULL, 0); crop_h = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-resize") && c < argc - 2) { resize_w = strtol(argv[++c], NULL, 0); resize_h = strtol(argv[++c], NULL, 0); #ifndef WEBP_DLL } else if (!strcmp(argv[c], "-noasm")) { VP8GetCPUInfo = NULL; #endif } else if (!strcmp(argv[c], "-version")) { const int version = WebPGetEncoderVersion(); printf("%d.%d.%d\n", (version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff); return 0; } else if (!strcmp(argv[c], "-quiet")) { quiet = 1; } else if (!strcmp(argv[c], "-preset") && c < argc - 1) { WebPPreset preset; ++c; if (!strcmp(argv[c], "default")) { preset = WEBP_PRESET_DEFAULT; } else if (!strcmp(argv[c], "photo")) { preset = WEBP_PRESET_PHOTO; } else if (!strcmp(argv[c], "picture")) { preset = WEBP_PRESET_PICTURE; } else if (!strcmp(argv[c], "drawing")) { preset = WEBP_PRESET_DRAWING; } else if (!strcmp(argv[c], "icon")) { preset = WEBP_PRESET_ICON; } else if (!strcmp(argv[c], "text")) { preset = WEBP_PRESET_TEXT; } else { fprintf(stderr, "Error! Unrecognized preset: %s\n", argv[c]); goto Error; } if (!WebPConfigPreset(&config, preset, config.quality)) { fprintf(stderr, "Error! Could initialize configuration with preset.\n"); goto Error; } } else if (!strcmp(argv[c], "-v")) { verbose = 1; } else if (argv[c][0] == '-') { fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]); HelpLong(); return -1; } else { in_file = argv[c]; } }
void save_as_webp(T1& file, float quality, int method, int lossless, int image_hint, bool alpha, T2 const& image) { WebPConfig config; if (!WebPConfigPreset(&config, WEBP_PRESET_DEFAULT, quality)) { throw std::runtime_error("version mismatch"); } // Add additional tuning if (method >= 0) config.method = method; #if (WEBP_ENCODER_ABI_VERSION >> 8) >= 1 config.lossless = !!lossless; config.image_hint = static_cast<WebPImageHint>(image_hint); #else #ifdef _MSC_VER #pragma NOTE(compiling against webp that does not support lossless flag) #else #warning "compiling against webp that does not support lossless flag" #endif #endif bool valid = WebPValidateConfig(&config); if (!valid) { throw std::runtime_error("Invalid configuration"); } WebPPicture pic; if (!WebPPictureInit(&pic)) { throw std::runtime_error("version mismatch"); } pic.width = image.width(); pic.height = image.height(); int ok = 0; #if (WEBP_ENCODER_ABI_VERSION >> 8) >= 1 pic.use_argb = !!lossless; // lossless fast track if (pic.use_argb) { pic.colorspace = static_cast<WebPEncCSP>(pic.colorspace | WEBP_CSP_ALPHA_BIT); if (WebPPictureAlloc(&pic)) { ok = 1; const int width = pic.width; const int height = pic.height; for (int y = 0; y < height; ++y) { typename T2::pixel_type const * row = image.getRow(y); for (int x = 0; x < width; ++x) { const unsigned rgba = row[x]; unsigned a = (rgba >> 24) & 0xff; unsigned r = rgba & 0xff; unsigned g = (rgba >> 8 ) & 0xff; unsigned b = (rgba >> 16) & 0xff; const uint32_t argb = (a << 24) | (r << 16) | (g << 8) | (b); pic.argb[x + y * pic.argb_stride] = argb; } } }
static MagickBooleanType WriteWEBPImage(const ImageInfo *image_info, Image *image) { int webp_status; MagickBooleanType status; register const PixelPacket *__restrict__ p; register ssize_t x; register unsigned char *__restrict__ q; ssize_t y; unsigned char *pixels; WebPConfig configure; WebPPicture picture; WebPAuxStats statistics; /* Open output image file. */ assert(image_info != (const ImageInfo *) NULL); assert(image_info->signature == MagickSignature); assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception); if (status == MagickFalse) return(status); if (WebPPictureInit(&picture) == 0) ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); picture.writer=WebPWriter; picture.custom_ptr=(void *) image; picture.stats=(&statistics); picture.width=(int) image->columns; picture.height=(int) image->rows; if (image->quality != UndefinedCompressionQuality) configure.quality=(float) image->quality; if (WebPConfigInit(&configure) == 0) ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); /* Future: set custom configuration parameters here. */ if (WebPValidateConfig(&configure) == 0) ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile"); /* Allocate memory for pixels. */ pixels=(unsigned char *) AcquireQuantumMemory(image->columns, (image->matte != MagickFalse ? 4 : 3)*image->rows*sizeof(*pixels)); if (pixels == (unsigned char *) NULL) ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); /* Convert image to WebP raster pixels. */ q=pixels; for (y=0; y < (ssize_t) image->rows; y++) { p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); if (p == (PixelPacket *) NULL) break; for (x=0; x < (ssize_t) image->columns; x++) { *q++=ScaleQuantumToChar(GetRedPixelComponent(p)); *q++=ScaleQuantumToChar(GetGreenPixelComponent(p)); *q++=ScaleQuantumToChar(GetBluePixelComponent(p)); if (image->matte != MagickFalse) *q++=ScaleQuantumToChar((Quantum) (QuantumRange- (image->matte != MagickFalse ? GetOpacityPixelComponent(p) : OpaqueOpacity))); p++; } status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) break; } if (image->matte == MagickFalse) webp_status=WebPPictureImportRGB(&picture,pixels,3*picture.width); else webp_status=WebPPictureImportRGBA(&picture,pixels,4*picture.width); pixels=(unsigned char *) RelinquishMagickMemory(pixels); webp_status=WebPEncode(&configure,&picture); (void) CloseBlob(image); return(webp_status == 0 ? MagickFalse : MagickTrue); }
int main(int argc, const char *argv[]) { int return_value = -1; const char *in_file = NULL, *out_file = NULL, *dump_file = NULL; FILE *out = NULL; int c; int short_output = 0; int quiet = 0; int keep_alpha = 1; int blend_alpha = 0; uint32_t background_color = 0xffffffu; int crop = 0, crop_x = 0, crop_y = 0, crop_w = 0, crop_h = 0; int resize_w = 0, resize_h = 0; int lossless_preset = 6; int use_lossless_preset = -1; // -1=unset, 0=don't use, 1=use it int show_progress = 0; int keep_metadata = 0; int metadata_written = 0; WebPPicture picture; int print_distortion = -1; // -1=off, 0=PSNR, 1=SSIM, 2=LSIM WebPPicture original_picture; // when PSNR or SSIM is requested WebPConfig config; WebPAuxStats stats; WebPMemoryWriter memory_writer; Metadata metadata; Stopwatch stop_watch; MetadataInit(&metadata); WebPMemoryWriterInit(&memory_writer); if (!WebPPictureInit(&picture) || !WebPPictureInit(&original_picture) || !WebPConfigInit(&config)) { fprintf(stderr, "Error! Version mismatch!\n"); return -1; } if (argc == 1) { HelpShort(); return 0; } for (c = 1; c < argc; ++c) { if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) { HelpShort(); return 0; } else if (!strcmp(argv[c], "-H") || !strcmp(argv[c], "-longhelp")) { HelpLong(); return 0; } else if (!strcmp(argv[c], "-o") && c < argc - 1) { out_file = argv[++c]; } else if (!strcmp(argv[c], "-d") && c < argc - 1) { dump_file = argv[++c]; config.show_compressed = 1; } else if (!strcmp(argv[c], "-print_psnr")) { config.show_compressed = 1; print_distortion = 0; } else if (!strcmp(argv[c], "-print_ssim")) { config.show_compressed = 1; print_distortion = 1; } else if (!strcmp(argv[c], "-print_lsim")) { config.show_compressed = 1; print_distortion = 2; } else if (!strcmp(argv[c], "-short")) { ++short_output; } else if (!strcmp(argv[c], "-s") && c < argc - 2) { picture.width = strtol(argv[++c], NULL, 0); picture.height = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-m") && c < argc - 1) { config.method = strtol(argv[++c], NULL, 0); use_lossless_preset = 0; // disable -z option } else if (!strcmp(argv[c], "-q") && c < argc - 1) { config.quality = (float)strtod(argv[++c], NULL); use_lossless_preset = 0; // disable -z option } else if (!strcmp(argv[c], "-z") && c < argc - 1) { lossless_preset = strtol(argv[++c], NULL, 0); if (use_lossless_preset != 0) use_lossless_preset = 1; } else if (!strcmp(argv[c], "-alpha_q") && c < argc - 1) { config.alpha_quality = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-alpha_method") && c < argc - 1) { config.alpha_compression = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-alpha_cleanup")) { keep_alpha = keep_alpha ? 2 : 0; } else if (!strcmp(argv[c], "-blend_alpha") && c < argc - 1) { blend_alpha = 1; background_color = strtol(argv[++c], NULL, 16); // <- parses '0x' prefix background_color = background_color & 0x00ffffffu; } else if (!strcmp(argv[c], "-alpha_filter") && c < argc - 1) { ++c; if (!strcmp(argv[c], "none")) { config.alpha_filtering = 0; } else if (!strcmp(argv[c], "fast")) { config.alpha_filtering = 1; } else if (!strcmp(argv[c], "best")) { config.alpha_filtering = 2; } else { fprintf(stderr, "Error! Unrecognized alpha filter: %s\n", argv[c]); goto Error; } } else if (!strcmp(argv[c], "-noalpha")) { keep_alpha = 0; } else if (!strcmp(argv[c], "-lossless")) { config.lossless = 1; } else if (!strcmp(argv[c], "-hint") && c < argc - 1) { ++c; if (!strcmp(argv[c], "photo")) { config.image_hint = WEBP_HINT_PHOTO; } else if (!strcmp(argv[c], "picture")) { config.image_hint = WEBP_HINT_PICTURE; } else if (!strcmp(argv[c], "graph")) { config.image_hint = WEBP_HINT_GRAPH; } else { fprintf(stderr, "Error! Unrecognized image hint: %s\n", argv[c]); goto Error; } } else if (!strcmp(argv[c], "-size") && c < argc - 1) { config.target_size = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-psnr") && c < argc - 1) { config.target_PSNR = (float)strtod(argv[++c], NULL); } else if (!strcmp(argv[c], "-sns") && c < argc - 1) { config.sns_strength = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-f") && c < argc - 1) { config.filter_strength = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-af")) { config.autofilter = 1; } else if (!strcmp(argv[c], "-jpeg_like")) { config.emulate_jpeg_size = 1; } else if (!strcmp(argv[c], "-mt")) { ++config.thread_level; // increase thread level } else if (!strcmp(argv[c], "-low_memory")) { config.low_memory = 1; } else if (!strcmp(argv[c], "-strong")) { config.filter_type = 1; } else if (!strcmp(argv[c], "-nostrong")) { config.filter_type = 0; } else if (!strcmp(argv[c], "-sharpness") && c < argc - 1) { config.filter_sharpness = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-pass") && c < argc - 1) { config.pass = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-pre") && c < argc - 1) { config.preprocessing = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-segments") && c < argc - 1) { config.segments = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-partition_limit") && c < argc - 1) { config.partition_limit = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-map") && c < argc - 1) { picture.extra_info_type = strtol(argv[++c], NULL, 0); #ifdef WEBP_EXPERIMENTAL_FEATURES } else if (!strcmp(argv[c], "-444")) { picture.colorspace = WEBP_YUV444; } else if (!strcmp(argv[c], "-422")) { picture.colorspace = WEBP_YUV422; } else if (!strcmp(argv[c], "-gray")) { picture.colorspace = WEBP_YUV400; #endif } else if (!strcmp(argv[c], "-crop") && c < argc - 4) { crop = 1; crop_x = strtol(argv[++c], NULL, 0); crop_y = strtol(argv[++c], NULL, 0); crop_w = strtol(argv[++c], NULL, 0); crop_h = strtol(argv[++c], NULL, 0); } else if (!strcmp(argv[c], "-resize") && c < argc - 2) { resize_w = strtol(argv[++c], NULL, 0); resize_h = strtol(argv[++c], NULL, 0); #ifndef WEBP_DLL } else if (!strcmp(argv[c], "-noasm")) { VP8GetCPUInfo = NULL; #endif } else if (!strcmp(argv[c], "-version")) { const int version = WebPGetEncoderVersion(); printf("%d.%d.%d\n", (version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff); return 0; } else if (!strcmp(argv[c], "-progress")) { show_progress = 1; } else if (!strcmp(argv[c], "-quiet")) { quiet = 1; } else if (!strcmp(argv[c], "-preset") && c < argc - 1) { WebPPreset preset; ++c; if (!strcmp(argv[c], "default")) { preset = WEBP_PRESET_DEFAULT; } else if (!strcmp(argv[c], "photo")) { preset = WEBP_PRESET_PHOTO; } else if (!strcmp(argv[c], "picture")) { preset = WEBP_PRESET_PICTURE; } else if (!strcmp(argv[c], "drawing")) { preset = WEBP_PRESET_DRAWING; } else if (!strcmp(argv[c], "icon")) { preset = WEBP_PRESET_ICON; } else if (!strcmp(argv[c], "text")) { preset = WEBP_PRESET_TEXT; } else { fprintf(stderr, "Error! Unrecognized preset: %s\n", argv[c]); goto Error; } if (!WebPConfigPreset(&config, preset, config.quality)) { fprintf(stderr, "Error! Could initialize configuration with preset.\n"); goto Error; } } else if (!strcmp(argv[c], "-metadata") && c < argc - 1) { static const struct { const char* option; int flag; } kTokens[] = { { "all", METADATA_ALL }, { "none", 0 }, { "exif", METADATA_EXIF }, { "icc", METADATA_ICC }, { "xmp", METADATA_XMP }, }; const size_t kNumTokens = sizeof(kTokens) / sizeof(kTokens[0]); const char* start = argv[++c]; const char* const end = start + strlen(start); while (start < end) { size_t i; const char* token = strchr(start, ','); if (token == NULL) token = end; for (i = 0; i < kNumTokens; ++i) { if ((size_t)(token - start) == strlen(kTokens[i].option) && !strncmp(start, kTokens[i].option, strlen(kTokens[i].option))) { if (kTokens[i].flag != 0) { keep_metadata |= kTokens[i].flag; } else { keep_metadata = 0; } break; } } if (i == kNumTokens) { fprintf(stderr, "Error! Unknown metadata type '%.*s'\n", (int)(token - start), start); HelpLong(); return -1; } start = token + 1; } #ifdef HAVE_WINCODEC_H if (keep_metadata != 0 && keep_metadata != METADATA_ICC) { // TODO(jzern): remove when -metadata is supported on all platforms. fprintf(stderr, "Warning: only ICC profile extraction is currently" " supported on this platform!\n"); } #endif } else if (!strcmp(argv[c], "-v")) { verbose = 1; } else if (!strcmp(argv[c], "--")) { if (c < argc - 1) in_file = argv[++c]; break; } else if (argv[c][0] == '-') { fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]); HelpLong(); return -1; } else { in_file = argv[c]; } }
GDALDataset * WEBPDataset::CreateCopy( const char * pszFilename, GDALDataset *poSrcDS, int bStrict, char ** papszOptions, GDALProgressFunc pfnProgress, void * pProgressData ) { int nBands = poSrcDS->GetRasterCount(); int nXSize = poSrcDS->GetRasterXSize(); int nYSize = poSrcDS->GetRasterYSize(); /* -------------------------------------------------------------------- */ /* WEBP library initialization */ /* -------------------------------------------------------------------- */ WebPPicture sPicture; if (!WebPPictureInit(&sPicture)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPPictureInit() failed"); return NULL; } /* -------------------------------------------------------------------- */ /* Some some rudimentary checks */ /* -------------------------------------------------------------------- */ if( nXSize > 16383 || nYSize > 16383 ) { CPLError( CE_Failure, CPLE_NotSupported, "WEBP maximum image dimensions are 16383 x 16383."); return NULL; } if( nBands != 3 #if WEBP_ENCODER_ABI_VERSION >= 0x0100 && nBands != 4 #endif ) { CPLError( CE_Failure, CPLE_NotSupported, "WEBP driver doesn't support %d bands. Must be 3 (RGB) " #if WEBP_ENCODER_ABI_VERSION >= 0x0100 "or 4 (RGBA) " #endif "bands.", nBands ); return NULL; } GDALDataType eDT = poSrcDS->GetRasterBand(1)->GetRasterDataType(); if( eDT != GDT_Byte ) { CPLError( (bStrict) ? CE_Failure : CE_Warning, CPLE_NotSupported, "WEBP driver doesn't support data type %s. " "Only eight bit byte bands supported.", GDALGetDataTypeName( poSrcDS->GetRasterBand(1)->GetRasterDataType()) ); if (bStrict) return NULL; } /* -------------------------------------------------------------------- */ /* What options has the user selected? */ /* -------------------------------------------------------------------- */ float fQuality = 75.0f; const char* pszQUALITY = CSLFetchNameValue(papszOptions, "QUALITY"); if( pszQUALITY != NULL ) { fQuality = (float) CPLAtof(pszQUALITY); if( fQuality < 0.0f || fQuality > 100.0f ) { CPLError( CE_Failure, CPLE_IllegalArg, "%s=%s is not a legal value.", "QUALITY", pszQUALITY); return NULL; } } WebPPreset nPreset = WEBP_PRESET_DEFAULT; const char* pszPRESET = CSLFetchNameValueDef(papszOptions, "PRESET", "DEFAULT"); if (EQUAL(pszPRESET, "DEFAULT")) nPreset = WEBP_PRESET_DEFAULT; else if (EQUAL(pszPRESET, "PICTURE")) nPreset = WEBP_PRESET_PICTURE; else if (EQUAL(pszPRESET, "PHOTO")) nPreset = WEBP_PRESET_PHOTO; else if (EQUAL(pszPRESET, "PICTURE")) nPreset = WEBP_PRESET_PICTURE; else if (EQUAL(pszPRESET, "DRAWING")) nPreset = WEBP_PRESET_DRAWING; else if (EQUAL(pszPRESET, "ICON")) nPreset = WEBP_PRESET_ICON; else if (EQUAL(pszPRESET, "TEXT")) nPreset = WEBP_PRESET_TEXT; else { CPLError( CE_Failure, CPLE_IllegalArg, "%s=%s is not a legal value.", "PRESET", pszPRESET ); return NULL; } WebPConfig sConfig; if (!WebPConfigInitInternal(&sConfig, nPreset, fQuality, WEBP_ENCODER_ABI_VERSION)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPConfigInit() failed"); return NULL; } #define FETCH_AND_SET_OPTION_INT(name, fieldname, minval, maxval) \ { \ const char* pszVal = CSLFetchNameValue(papszOptions, name); \ if (pszVal != NULL) \ { \ sConfig.fieldname = atoi(pszVal); \ if (sConfig.fieldname < minval || sConfig.fieldname > maxval) \ { \ CPLError( CE_Failure, CPLE_IllegalArg, \ "%s=%s is not a legal value.", name, pszVal ); \ return NULL; \ } \ } \ } FETCH_AND_SET_OPTION_INT("TARGETSIZE", target_size, 0, INT_MAX); const char* pszPSNR = CSLFetchNameValue(papszOptions, "PSNR"); if (pszPSNR) { sConfig.target_PSNR = CPLAtof(pszPSNR); if (sConfig.target_PSNR < 0) { CPLError( CE_Failure, CPLE_IllegalArg, "PSNR=%s is not a legal value.", pszPSNR ); return NULL; } } FETCH_AND_SET_OPTION_INT("METHOD", method, 0, 6); FETCH_AND_SET_OPTION_INT("SEGMENTS", segments, 1, 4); FETCH_AND_SET_OPTION_INT("SNS_STRENGTH", sns_strength, 0, 100); FETCH_AND_SET_OPTION_INT("FILTER_STRENGTH", filter_strength, 0, 100); FETCH_AND_SET_OPTION_INT("FILTER_SHARPNESS", filter_sharpness, 0, 7); FETCH_AND_SET_OPTION_INT("FILTER_TYPE", filter_type, 0, 1); FETCH_AND_SET_OPTION_INT("AUTOFILTER", autofilter, 0, 1); FETCH_AND_SET_OPTION_INT("PASS", pass, 1, 10); FETCH_AND_SET_OPTION_INT("PREPROCESSING", preprocessing, 0, 1); FETCH_AND_SET_OPTION_INT("PARTITIONS", partitions, 0, 3); #if WEBP_ENCODER_ABI_VERSION >= 0x0002 FETCH_AND_SET_OPTION_INT("PARTITION_LIMIT", partition_limit, 0, 100); #endif #if WEBP_ENCODER_ABI_VERSION >= 0x0100 sConfig.lossless = CSLFetchBoolean(papszOptions, "LOSSLESS", FALSE); if (sConfig.lossless) sPicture.use_argb = 1; #endif if (!WebPValidateConfig(&sConfig)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPValidateConfig() failed"); return NULL; } /* -------------------------------------------------------------------- */ /* Allocate memory */ /* -------------------------------------------------------------------- */ GByte *pabyBuffer; pabyBuffer = (GByte *) VSIMalloc( nBands * nXSize * nYSize ); if (pabyBuffer == NULL) { return NULL; } /* -------------------------------------------------------------------- */ /* Create the dataset. */ /* -------------------------------------------------------------------- */ VSILFILE *fpImage; fpImage = VSIFOpenL( pszFilename, "wb" ); if( fpImage == NULL ) { CPLError( CE_Failure, CPLE_OpenFailed, "Unable to create WEBP file %s.\n", pszFilename ); VSIFree(pabyBuffer); return NULL; } WebPUserData sUserData; sUserData.fp = fpImage; sUserData.pfnProgress = pfnProgress ? pfnProgress : GDALDummyProgress; sUserData.pProgressData = pProgressData; /* -------------------------------------------------------------------- */ /* WEBP library settings */ /* -------------------------------------------------------------------- */ sPicture.width = nXSize; sPicture.height = nYSize; sPicture.writer = WEBPDatasetWriter; sPicture.custom_ptr = &sUserData; #if WEBP_ENCODER_ABI_VERSION >= 0x0100 sPicture.progress_hook = WEBPDatasetProgressHook; #endif if (!WebPPictureAlloc(&sPicture)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPPictureAlloc() failed"); VSIFree(pabyBuffer); VSIFCloseL( fpImage ); return NULL; } /* -------------------------------------------------------------------- */ /* Acquire source imagery. */ /* -------------------------------------------------------------------- */ CPLErr eErr = CE_None; eErr = poSrcDS->RasterIO( GF_Read, 0, 0, nXSize, nYSize, pabyBuffer, nXSize, nYSize, GDT_Byte, nBands, NULL, nBands, nBands * nXSize, 1, NULL ); /* -------------------------------------------------------------------- */ /* Import and write to file */ /* -------------------------------------------------------------------- */ #if WEBP_ENCODER_ABI_VERSION >= 0x0100 if (eErr == CE_None && nBands == 4) { if (!WebPPictureImportRGBA(&sPicture, pabyBuffer, nBands * nXSize)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPPictureImportRGBA() failed"); eErr = CE_Failure; } } else #endif if (eErr == CE_None && !WebPPictureImportRGB(&sPicture, pabyBuffer, nBands * nXSize)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPPictureImportRGB() failed"); eErr = CE_Failure; } if (eErr == CE_None && !WebPEncode(&sConfig, &sPicture)) { const char* pszErrorMsg = NULL; #if WEBP_ENCODER_ABI_VERSION >= 0x0100 switch(sPicture.error_code) { case VP8_ENC_ERROR_OUT_OF_MEMORY: pszErrorMsg = "Out of memory"; break; case VP8_ENC_ERROR_BITSTREAM_OUT_OF_MEMORY: pszErrorMsg = "Out of memory while flushing bits"; break; case VP8_ENC_ERROR_NULL_PARAMETER: pszErrorMsg = "A pointer parameter is NULL"; break; case VP8_ENC_ERROR_INVALID_CONFIGURATION: pszErrorMsg = "Configuration is invalid"; break; case VP8_ENC_ERROR_BAD_DIMENSION: pszErrorMsg = "Picture has invalid width/height"; break; case VP8_ENC_ERROR_PARTITION0_OVERFLOW: pszErrorMsg = "Partition is bigger than 512k. Try using less SEGMENTS, or increase PARTITION_LIMIT value"; break; case VP8_ENC_ERROR_PARTITION_OVERFLOW: pszErrorMsg = "Partition is bigger than 16M"; break; case VP8_ENC_ERROR_BAD_WRITE: pszErrorMsg = "Error while flusing bytes"; break; case VP8_ENC_ERROR_FILE_TOO_BIG: pszErrorMsg = "File is bigger than 4G"; break; case VP8_ENC_ERROR_USER_ABORT: pszErrorMsg = "User interrupted"; break; default: break; } #endif if (pszErrorMsg) CPLError(CE_Failure, CPLE_AppDefined, "WebPEncode() failed : %s", pszErrorMsg); else CPLError(CE_Failure, CPLE_AppDefined, "WebPEncode() failed"); eErr = CE_Failure; } /* -------------------------------------------------------------------- */ /* Cleanup and close. */ /* -------------------------------------------------------------------- */ CPLFree( pabyBuffer ); WebPPictureFree(&sPicture); VSIFCloseL( fpImage ); if( eErr != CE_None ) { VSIUnlink( pszFilename ); return NULL; } /* -------------------------------------------------------------------- */ /* Re-open dataset, and copy any auxiliary pam information. */ /* -------------------------------------------------------------------- */ GDALOpenInfo oOpenInfo(pszFilename, GA_ReadOnly); /* If outputing to stdout, we can't reopen it, so we'll return */ /* a fake dataset to make the caller happy */ CPLPushErrorHandler(CPLQuietErrorHandler); WEBPDataset *poDS = (WEBPDataset*) WEBPDataset::Open( &oOpenInfo ); CPLPopErrorHandler(); if( poDS ) { poDS->CloneInfo( poSrcDS, GCIF_PAM_DEFAULT ); return poDS; } return NULL; }
status_t WebPTranslator::_TranslateFromBits(BPositionIO* stream, BMessage* ioExtension, uint32 outType, BPositionIO* target) { if (!outType) outType = WEBP_IMAGE_FORMAT; if (outType != WEBP_IMAGE_FORMAT) return B_NO_TRANSLATOR; TranslatorBitmap bitsHeader; status_t status; status = identify_bits_header(stream, NULL, &bitsHeader); if (status != B_OK) return status; if (bitsHeader.colors == B_CMAP8) { // TODO: support whatever colospace by intermediate colorspace conversion printf("Error! Colorspace not supported\n"); return B_NO_TRANSLATOR; } int32 bitsBytesPerPixel = 0; switch (bitsHeader.colors) { case B_RGB32: case B_RGB32_BIG: case B_RGBA32: case B_RGBA32_BIG: case B_CMY32: case B_CMYA32: case B_CMYK32: bitsBytesPerPixel = 4; break; case B_RGB24: case B_RGB24_BIG: case B_CMY24: bitsBytesPerPixel = 3; break; case B_RGB16: case B_RGB16_BIG: case B_RGBA15: case B_RGBA15_BIG: case B_RGB15: case B_RGB15_BIG: bitsBytesPerPixel = 2; break; case B_CMAP8: case B_GRAY8: bitsBytesPerPixel = 1; break; default: return B_ERROR; } if (bitsBytesPerPixel < 3) { // TODO support return B_NO_TRANSLATOR; } WebPPicture picture; WebPConfig config; if (!WebPPictureInit(&picture) || !WebPConfigInit(&config)) { printf("Error! Version mismatch!\n"); return B_ERROR; } WebPPreset preset = (WebPPreset)fSettings->SetGetInt32(WEBP_SETTING_PRESET); config.quality = (float)fSettings->SetGetInt32(WEBP_SETTING_QUALITY); if (!WebPConfigPreset(&config, (WebPPreset)preset, config.quality)) { printf("Error! Could initialize configuration with preset."); return B_ERROR; } config.method = fSettings->SetGetInt32(WEBP_SETTING_METHOD); config.preprocessing = fSettings->SetGetBool(WEBP_SETTING_PREPROCESSING); if (!WebPValidateConfig(&config)) { printf("Error! Invalid configuration.\n"); return B_ERROR; } picture.width = bitsHeader.bounds.IntegerWidth() + 1; picture.height = bitsHeader.bounds.IntegerHeight() + 1; int stride = bitsHeader.rowBytes; int bitsSize = picture.height * stride; uint8* bits = (uint8*)malloc(bitsSize); if (bits == NULL) return B_NO_MEMORY; if (stream->Read(bits, bitsSize) != bitsSize) { free(bits); return B_IO_ERROR; } if (!WebPPictureImportBGRA(&picture, bits, stride)) { printf("Error! WebPEncode() failed!\n"); free(bits); return B_ERROR; } free(bits); picture.writer = _EncodedWriter; picture.custom_ptr = target; picture.stats = NULL; if (!WebPEncode(&config, &picture)) { printf("Error! WebPEncode() failed!\n"); status = B_NO_TRANSLATOR; } else status = B_OK; WebPPictureFree(&picture); return status; }
static int TWebPSetupEncode(TIFF* tif) { static const char module[] = "WebPSetupEncode"; uint16 nBitsPerSample = tif->tif_dir.td_bitspersample; uint16 sampleFormat = tif->tif_dir.td_sampleformat; WebPState* sp = EncoderState(tif); assert(sp != NULL); sp->nSamples = tif->tif_dir.td_samplesperpixel; /* check band count */ if ( sp->nSamples != 3 #if WEBP_ENCODER_ABI_VERSION >= 0x0100 && sp->nSamples != 4 #endif ) { TIFFErrorExt(tif->tif_clientdata, module, "WEBP driver doesn't support %d bands. Must be 3 (RGB) " #if WEBP_ENCODER_ABI_VERSION >= 0x0100 "or 4 (RGBA) " #endif "bands.", sp->nSamples ); return 0; } /* check bits per sample and data type */ if ((nBitsPerSample != 8) && (sampleFormat != 1)) { TIFFErrorExt(tif->tif_clientdata, module, "WEBP driver requires 8 bit unsigned data"); return 0; } if (sp->state & LSTATE_INIT_DECODE) { WebPIDelete(sp->psDecoder); WebPFreeDecBuffer(&sp->sDecBuffer); sp->psDecoder = NULL; sp->last_y = 0; sp->state = 0; } sp->state |= LSTATE_INIT_ENCODE; if (!WebPPictureInit(&sp->sPicture)) { TIFFErrorExt(tif->tif_clientdata, module, "Error initializing WebP picture."); return 0; } if (!WebPConfigInitInternal(&sp->sEncoderConfig, WEBP_PRESET_DEFAULT, sp->quality_level, WEBP_ENCODER_ABI_VERSION)) { TIFFErrorExt(tif->tif_clientdata, module, "Error creating WebP encoder configuration."); return 0; } // WebPConfigInitInternal above sets lossless to false #if WEBP_ENCODER_ABI_VERSION >= 0x0100 sp->sEncoderConfig.lossless = sp->lossless; if (sp->lossless) { sp->sPicture.use_argb = 1; } #endif if (!WebPValidateConfig(&sp->sEncoderConfig)) { TIFFErrorExt(tif->tif_clientdata, module, "Error with WebP encoder configuration."); return 0; } return 1; }
GDALDataset * WEBPDataset::CreateCopy( const char * pszFilename, GDALDataset *poSrcDS, int bStrict, char ** papszOptions, GDALProgressFunc pfnProgress, void * pProgressData ) { int nBands = poSrcDS->GetRasterCount(); int nXSize = poSrcDS->GetRasterXSize(); int nYSize = poSrcDS->GetRasterYSize(); /* -------------------------------------------------------------------- */ /* WEBP library initialization */ /* -------------------------------------------------------------------- */ WebPPicture sPicture; if (!WebPPictureInit(&sPicture)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPPictureInit() failed"); return NULL; } /* -------------------------------------------------------------------- */ /* Some some rudimentary checks */ /* -------------------------------------------------------------------- */ if( nXSize > 16383 || nYSize > 16383 ) { CPLError( CE_Failure, CPLE_NotSupported, "WEBP maximum image dimensions are 16383 x 16383."); return NULL; } if( nBands != 3 ) { CPLError( CE_Failure, CPLE_NotSupported, "WEBP driver doesn't support %d bands. Must be 3 (RGB) bands.", nBands ); return NULL; } GDALDataType eDT = poSrcDS->GetRasterBand(1)->GetRasterDataType(); if( eDT != GDT_Byte ) { CPLError( (bStrict) ? CE_Failure : CE_Warning, CPLE_NotSupported, "WEBP driver doesn't support data type %s. " "Only eight bit byte bands supported.", GDALGetDataTypeName( poSrcDS->GetRasterBand(1)->GetRasterDataType()) ); if (bStrict) return NULL; } /* -------------------------------------------------------------------- */ /* What options has the user selected? */ /* -------------------------------------------------------------------- */ float fQuality = 75.0f; const char* pszQUALITY = CSLFetchNameValue(papszOptions, "QUALITY"); if( pszQUALITY != NULL ) { fQuality = (float) atof(pszQUALITY); if( fQuality < 0.0f || fQuality > 100.0f ) { CPLError( CE_Failure, CPLE_IllegalArg, "%s=%s is not a legal value.", "QUALITY", pszQUALITY); return NULL; } } WebPPreset nPreset = WEBP_PRESET_DEFAULT; const char* pszPRESET = CSLFetchNameValueDef(papszOptions, "PRESET", "DEFAULT"); if (EQUAL(pszPRESET, "DEFAULT")) nPreset = WEBP_PRESET_DEFAULT; else if (EQUAL(pszPRESET, "PICTURE")) nPreset = WEBP_PRESET_PICTURE; else if (EQUAL(pszPRESET, "PHOTO")) nPreset = WEBP_PRESET_PHOTO; else if (EQUAL(pszPRESET, "PICTURE")) nPreset = WEBP_PRESET_PICTURE; else if (EQUAL(pszPRESET, "DRAWING")) nPreset = WEBP_PRESET_DRAWING; else if (EQUAL(pszPRESET, "ICON")) nPreset = WEBP_PRESET_ICON; else if (EQUAL(pszPRESET, "TEXT")) nPreset = WEBP_PRESET_TEXT; else { CPLError( CE_Failure, CPLE_IllegalArg, "%s=%s is not a legal value.", "PRESET", pszPRESET ); return NULL; } WebPConfig sConfig; if (!WebPConfigInitInternal(&sConfig, nPreset, fQuality, WEBP_ENCODER_ABI_VERSION)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPConfigInit() failed"); return NULL; } #define FETCH_AND_SET_OPTION_INT(name, fieldname, minval, maxval) \ { \ const char* pszVal = CSLFetchNameValue(papszOptions, name); \ if (pszVal != NULL) \ { \ sConfig.fieldname = atoi(pszVal); \ if (sConfig.fieldname < minval || sConfig.fieldname > maxval) \ { \ CPLError( CE_Failure, CPLE_IllegalArg, \ "%s=%s is not a legal value.", name, pszVal ); \ return NULL; \ } \ } \ } FETCH_AND_SET_OPTION_INT("TARGETSIZE", target_size, 0, INT_MAX); const char* pszPSNR = CSLFetchNameValue(papszOptions, "PSNR"); if (pszPSNR) { sConfig.target_PSNR = atof(pszPSNR); if (sConfig.target_PSNR < 0) { CPLError( CE_Failure, CPLE_IllegalArg, "PSNR=%s is not a legal value.", pszPSNR ); return NULL; } } FETCH_AND_SET_OPTION_INT("METHOD", method, 0, 6); FETCH_AND_SET_OPTION_INT("SEGMENTS", segments, 1, 4); FETCH_AND_SET_OPTION_INT("SNS_STRENGTH", sns_strength, 0, 100); FETCH_AND_SET_OPTION_INT("FILTER_STRENGTH", filter_strength, 0, 100); FETCH_AND_SET_OPTION_INT("FILTER_SHARPNESS", filter_sharpness, 0, 7); FETCH_AND_SET_OPTION_INT("FILTER_TYPE", filter_type, 0, 1); FETCH_AND_SET_OPTION_INT("AUTOFILTER", autofilter, 0, 1); FETCH_AND_SET_OPTION_INT("PASS", pass, 1, 10); FETCH_AND_SET_OPTION_INT("PREPROCESSING", preprocessing, 0, 1); FETCH_AND_SET_OPTION_INT("PARTITIONS", partitions, 0, 3); if (!WebPValidateConfig(&sConfig)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPValidateConfig() failed"); return NULL; } /* -------------------------------------------------------------------- */ /* Allocate memory */ /* -------------------------------------------------------------------- */ GByte *pabyBuffer; pabyBuffer = (GByte *) VSIMalloc( 3 * nXSize * nYSize ); if (pabyBuffer == NULL) { return NULL; } /* -------------------------------------------------------------------- */ /* Create the dataset. */ /* -------------------------------------------------------------------- */ VSILFILE *fpImage; fpImage = VSIFOpenL( pszFilename, "wb" ); if( fpImage == NULL ) { CPLError( CE_Failure, CPLE_OpenFailed, "Unable to create WEBP file %s.\n", pszFilename ); VSIFree(pabyBuffer); return NULL; } /* -------------------------------------------------------------------- */ /* WEBP library settings */ /* -------------------------------------------------------------------- */ sPicture.colorspace = 0; sPicture.width = nXSize; sPicture.height = nYSize; sPicture.writer = WEBPDatasetWriter; sPicture.custom_ptr = fpImage; if (!WebPPictureAlloc(&sPicture)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPPictureAlloc() failed"); VSIFree(pabyBuffer); VSIFCloseL( fpImage ); return NULL; } /* -------------------------------------------------------------------- */ /* Acquire source imagery. */ /* -------------------------------------------------------------------- */ CPLErr eErr = CE_None; eErr = poSrcDS->RasterIO( GF_Read, 0, 0, nXSize, nYSize, pabyBuffer, nXSize, nYSize, GDT_Byte, 3, NULL, 3, 3 * nXSize, 1 ); /* -------------------------------------------------------------------- */ /* Import and write to file */ /* -------------------------------------------------------------------- */ if (eErr == CE_None && !WebPPictureImportRGB(&sPicture, pabyBuffer, 3 * nXSize)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPPictureImportRGB() failed"); eErr = CE_Failure; } if (eErr == CE_None && !WebPEncode(&sConfig, &sPicture)) { CPLError(CE_Failure, CPLE_AppDefined, "WebPEncode() failed"); eErr = CE_Failure; } /* -------------------------------------------------------------------- */ /* Cleanup and close. */ /* -------------------------------------------------------------------- */ CPLFree( pabyBuffer ); WebPPictureFree(&sPicture); VSIFCloseL( fpImage ); if( eErr != CE_None ) { VSIUnlink( pszFilename ); return NULL; } /* -------------------------------------------------------------------- */ /* Re-open dataset, and copy any auxilary pam information. */ /* -------------------------------------------------------------------- */ GDALOpenInfo oOpenInfo(pszFilename, GA_ReadOnly); /* If outputing to stdout, we can't reopen it, so we'll return */ /* a fake dataset to make the caller happy */ CPLPushErrorHandler(CPLQuietErrorHandler); WEBPDataset *poDS = (WEBPDataset*) WEBPDataset::Open( &oOpenInfo ); CPLPopErrorHandler(); if( poDS ) { poDS->CloneInfo( poSrcDS, GCIF_PAM_DEFAULT ); return poDS; } return NULL; }
int webp_encode(const char *in_file, const char *out_file, const FfiWebpEncodeConfig *encode_config) { int return_value = -1; FILE *out = NULL; int keep_alpha = 1; WebPPicture picture; WebPConfig config; // OPTIONS BEGIN if (encode_config->lossless == 0 || encode_config->lossless == 1){ config.lossless = encode_config->lossless; } if (encode_config->quality >= 0 && encode_config->quality <= 100){ config.quality = encode_config->quality; } if (encode_config->method >= 0 && encode_config->method <= 6){ config.method = encode_config->method; } if (encode_config->target_size > 0){ config.target_size = encode_config->target_size; } if (encode_config->target_PSNR > 0){ config.target_PSNR = encode_config->target_PSNR; } if (encode_config->segments >= 0 && encode_config->segments <= 4){ config.segments = encode_config->segments; } if (encode_config->sns_strength >= 0 && encode_config->sns_strength <= 100){ config.sns_strength = encode_config->sns_strength; } if (encode_config->filter_strength >= 0 && encode_config->filter_strength <= 100){ config.filter_strength = encode_config->filter_strength; } if (encode_config->filter_sharpness >= 0 && encode_config->filter_sharpness <= 7){ config.filter_sharpness = encode_config->filter_sharpness; } if (encode_config->filter_type == 0 || encode_config->filter_type == 1){ config.filter_type = encode_config->filter_type; } if (encode_config->autofilter == 0 || encode_config->autofilter == 1){ config.autofilter = encode_config->autofilter; } if (encode_config->alpha_compression == 0 || encode_config->alpha_compression == 1){ config.alpha_compression = encode_config->alpha_compression; } if (encode_config->alpha_filtering >= 0 && encode_config->alpha_filtering <= 2){ config.alpha_filtering = encode_config->alpha_filtering; } if (encode_config->alpha_quality >= 0 && encode_config->alpha_quality <= 100){ config.alpha_quality = encode_config->alpha_quality; } if (encode_config->pass >= 0 && encode_config->pass <= 10){ config.pass = encode_config->pass; } if (encode_config->show_compressed >= 0){ config.show_compressed = encode_config->show_compressed; } if (encode_config->preprocessing == 0 || encode_config->preprocessing == 1){ config.preprocessing = encode_config->preprocessing; } if (encode_config->partitions >= 0 && encode_config->partitions <= 3){ config.partitions = encode_config->partitions; } if (encode_config->partition_limit >= 0 && encode_config->partition_limit <= 100){ config.partition_limit = encode_config->partition_limit; } if ((encode_config->width | encode_config->height) > 0){ picture.width = encode_config->width; picture.height = encode_config->height; } // OPTIONS END if (!WebPPictureInit(&picture) || !WebPConfigInit(&config)) { //fprintf(stderr, "Error! Version mismatch!\n"); return 1; } if (!WebPValidateConfig(&config)) { //fprintf(stderr, "Error! Invalid configuration.\n"); return_value = 2; goto Error; } if (!UtilReadPicture(in_file, &picture, keep_alpha)) { //fprintf(stderr, "Error! Cannot read input picture file '%s'\n", in_file); return_value = 3; goto Error; } out = fopen(out_file, "wb"); if (out == NULL) { //fprintf(stderr, "Error! Cannot open output file '%s'\n", out_file); return_value = 4; goto Error; } picture.writer = EncodeWriter; picture.custom_ptr = (void*)out; if ((encode_config->crop_w | encode_config->crop_h) > 0){ if (!WebPPictureView(&picture, encode_config->crop_x, encode_config->crop_y, encode_config->crop_w, encode_config->crop_h, &picture)) { //fprintf(stderr, "Error! Cannot crop picture\n"); return_value = 5; goto Error; } } if ((encode_config->resize_w | encode_config->resize_h) > 0) { if (!WebPPictureRescale(&picture, encode_config->resize_w, encode_config->resize_h)) { //fprintf(stderr, "Error! Cannot resize picture\n"); return_value = 6; goto Error; } } if (picture.extra_info_type > 0) { AllocExtraInfo(&picture); } if (!WebPEncode(&config, &picture)) { //fprintf(stderr, "Error! Cannot encode picture as WebP\n"); return_value = 7; goto Error; } return_value = 0; Error: free(picture.extra_info); WebPPictureFree(&picture); if (out != NULL) { fclose(out); } return return_value; }
static gboolean real_save_webp (GdkPixbuf *pixbuf, gchar **keys, gchar **values, GError **error, gboolean to_callback, FILE *f, save_context *context) { WebPPicture picture; WebPConfig config; gint w, h, rowstride, has_alpha, rc; guchar *pixels; if (!WebPPictureInit(&picture) || !WebPConfigInit(&config)) { g_set_error(error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_BAD_OPTION, "WebP encoder version mismatch."); return FALSE; } if (keys && *keys) { gchar **kiter = keys; gchar **viter = values; while (*kiter) { if (strncmp (*kiter, "quality", 7) == 0) { float quality = (float) g_ascii_strtod (*viter, NULL); if (quality < 0 || quality > 100) { g_set_error (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_BAD_OPTION, "WebP quality must be a value between 0 and 100."); return FALSE; } config.quality = quality; } else if (strncmp (*kiter, "preset", 6) == 0) { WebPPreset preset; if (strncmp (*viter, "default", 7) == 0) { preset = WEBP_PRESET_DEFAULT; } else if (strncmp (*viter, "photo", 5) == 0) { preset = WEBP_PRESET_PHOTO; } else if (strncmp (*viter, "picture", 7) == 0) { preset = WEBP_PRESET_PICTURE; } else if (strncmp (*viter, "drawing", 7) == 0) { preset = WEBP_PRESET_DRAWING; } else if (strncmp (*viter, "icon", 4) == 0) { preset = WEBP_PRESET_ICON; } else if (strncmp (*viter, "text", 4) == 0) { preset = WEBP_PRESET_TEXT; } else { g_set_error (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_BAD_OPTION, "WebP encoder invalid preset."); return FALSE; } if (WebPConfigPreset (&config, preset, config.quality) == 0) { g_set_error (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_FAILED, "Could not initialize decoder with preset."); return FALSE; } } ++kiter; ++viter; } } if (WebPValidateConfig (&config) != 1) { g_set_error (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_BAD_OPTION, "Invalid encoding configuration"); return FALSE; } w = gdk_pixbuf_get_width (pixbuf); h = gdk_pixbuf_get_height (pixbuf); rowstride = gdk_pixbuf_get_rowstride (pixbuf); has_alpha = gdk_pixbuf_get_has_alpha (pixbuf); pixels = gdk_pixbuf_get_pixels (pixbuf); picture.width = w; picture.height = h; if (has_alpha) { rc = WebPPictureImportRGBA (&picture, pixels, rowstride); } else { rc = WebPPictureImportRGB (&picture, pixels, rowstride); } if (rc == 0) { g_set_error (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY, "Failed to allocate picture"); return FALSE; } if (to_callback) { picture.writer = save_callback; picture.custom_ptr = (void*) context; } else { picture.writer = write_file; picture.custom_ptr = (void*) f; } if (WebPEncode(&config, &picture) == 0) { fprintf(stderr, "Error! Cannot encode picture as WebP\n"); } return TRUE; }