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- //
- // UIImage+WebP.m
- // SDWebImage
- //
- // Created by Olivier Poitrey on 07/06/13.
- // Copyright (c) 2013 Dailymotion. All rights reserved.
- //
- #ifdef SD_WEBP
- #import "UIImage+EMWebP.h"
- #import "webp/decode.h"
- // Callback for CGDataProviderRelease
- static void FreeImageData(void *info, const void *data, size_t size)
- {
- free((void *)data);
- }
- @implementation UIImage (WebP)
- + (UIImage *)sd_imageWithWebPData:(NSData *)data {
- WebPDecoderConfig config;
- if (!WebPInitDecoderConfig(&config)) {
- return nil;
- }
- config.output.colorspace = MODE_rgbA;
- config.options.use_threads = 1;
- // Decode the WebP image data into a RGBA value array.
- if (WebPDecode(data.bytes, data.length, &config) != VP8_STATUS_OK) {
- return nil;
- }
- int width = config.input.width;
- int height = config.input.height;
- if (config.options.use_scaling) {
- width = config.options.scaled_width;
- height = config.options.scaled_height;
- }
- // Construct a UIImage from the decoded RGBA value array.
- CGDataProviderRef provider =
- CGDataProviderCreateWithData(NULL, config.output.u.RGBA.rgba, config.output.u.RGBA.size, FreeImageData);
- CGColorSpaceRef colorSpaceRef = CGColorSpaceCreateDeviceRGB();
- CGBitmapInfo bitmapInfo = kCGBitmapByteOrder32Big | kCGImageAlphaPremultipliedLast;
- CGColorRenderingIntent renderingIntent = kCGRenderingIntentDefault;
- CGImageRef imageRef = CGImageCreate(width, height, 8, 32, 4 * width, colorSpaceRef, bitmapInfo, provider, NULL, NO, renderingIntent);
- CGColorSpaceRelease(colorSpaceRef);
- CGDataProviderRelease(provider);
- UIImage *image = [[UIImage alloc] initWithCGImage:imageRef];
- CGImageRelease(imageRef);
- return image;
- }
- @end
- #if !COCOAPODS
- // Functions to resolve some undefined symbols when using WebP and force_load flag
- void WebPInitPremultiplyNEON(void) {}
- void WebPInitUpsamplersNEON(void) {}
- void VP8DspInitNEON(void) {}
- #endif
- #endif
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