166 lines
3.4 KiB
C
166 lines
3.4 KiB
C
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <webp/decode.h>
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#ifdef HAVE_EVIL
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# include <Evil.h>
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#endif
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#include "evas_common.h"
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#include "evas_private.h"
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static Eina_Bool evas_image_load_file_head_webp(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4);
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static Eina_Bool evas_image_load_file_data_webp(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4);
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static Evas_Image_Load_Func evas_image_load_webp_func =
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{
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EINA_TRUE,
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evas_image_load_file_head_webp,
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evas_image_load_file_data_webp,
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NULL,
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EINA_FALSE
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};
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static Eina_Bool
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evas_image_load_file_head_webp(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
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{
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WebPDecoderConfig config;
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FILE *f;
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size_t header_size = 30;
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uint8_t header[30];
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f = fopen(file, "rb");
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if (!f)
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{
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*error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
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return EINA_FALSE;
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}
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if (fread(header, header_size, 1, f) != 1)
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{
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fclose(f);
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*error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
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return EINA_FALSE;
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}
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fclose(f);
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if (!WebPInitDecoderConfig(&config))
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{
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*error = EVAS_LOAD_ERROR_CORRUPT_FILE;
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return EINA_FALSE;
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}
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if (WebPGetFeatures(header, header_size, &config.input) != VP8_STATUS_OK)
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{
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*error = EVAS_LOAD_ERROR_CORRUPT_FILE;
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return EINA_FALSE;
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}
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ie->w = config.input.width;
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ie->h = config.input.height;
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ie->flags.alpha = config.input.has_alpha;
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*error = EVAS_LOAD_ERROR_NONE;
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return EINA_TRUE;
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}
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static Eina_Bool
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evas_image_load_file_data_webp(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
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{
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FILE *f;
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size_t file_size;
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uint8_t *data, *decoded, *surface;
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int width, height;
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f = fopen(file, "rb");
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if (!f)
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{
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*error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
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return EINA_FALSE;
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}
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if (fseek(f, 0, SEEK_END) != 0)
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{
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*error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
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goto close_file;
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}
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file_size = ftell(f);
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if (fseek(f, 0, SEEK_SET) != 0)
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{
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*error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
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goto close_file;
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}
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data = malloc(file_size);
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if (!data)
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{
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*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
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goto close_file;
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}
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if (fread(data, file_size, 1, f) != 1)
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{
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*error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
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goto free_data;
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}
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evas_cache_image_surface_alloc(ie, ie->w, ie->h);
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surface = evas_cache_image_pixels(ie);
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if (!surface)
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{
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*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
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goto free_data;
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}
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decoded = WebPDecodeBGRA(data, file_size, &width, &height);
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memcpy(surface, decoded, width * height * 4);
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evas_common_image_premul(ie);
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free(decoded);
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free(data);
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fclose(f);
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*error = EVAS_LOAD_ERROR_NONE;
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return EINA_TRUE;
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free_data:
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free(data);
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close_file:
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fclose(f);
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return EINA_FALSE;
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}
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static int
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module_open(Evas_Module *em)
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{
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if (!em) return 0;
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em->functions = (void *)(&evas_image_load_webp_func);
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return 1;
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}
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static void
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module_close(Evas_Module *em __UNUSED__)
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{
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}
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static Evas_Module_Api evas_modapi =
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{
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EVAS_MODULE_API_VERSION,
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"webp",
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"none",
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{
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module_open,
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module_close
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}
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};
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EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_IMAGE_LOADER, image_loader, webp);
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#ifndef EVAS_STATIC_BUILD_WEBP
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EVAS_EINA_MODULE_DEFINE(image_loader, webp);
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#endif
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