106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
#include "cfg.h"
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#ifdef G
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#include "links.h"
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#ifdef HAVE_AVIF
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#include <avif/avif.h>
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struct avif_decoder {
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unsigned char *buffer;
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int len;
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};
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void avif_start(struct cached_image *cimg)
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{
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struct avif_decoder *deco;
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deco = mem_alloc(sizeof(struct avif_decoder));
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deco->buffer = init_str();
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deco->len = 0;
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cimg->decoder = deco;
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}
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void avif_restart(struct cached_image *cimg, unsigned char *data, int length)
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{
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struct avif_decoder *deco = (struct avif_decoder *)cimg->decoder;
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add_bytes_to_str(&deco->buffer, &deco->len, data, length);
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}
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void avif_finish(struct cached_image *cimg)
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{
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avifRGBImage ari;
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struct avif_decoder *deco;
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avifDecoder *decoder;
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memset(&ari, 0, sizeof(avifRGBImage));
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deco = (struct avif_decoder *)cimg->decoder;
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decoder = avifDecoderCreate();
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if (!decoder)
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goto end;
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#if AVIF_VERSION > 90001
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decoder->strictFlags = AVIF_STRICT_DISABLED;
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#endif
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decoder->ignoreExif = 1;
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decoder->ignoreXMP = 1;
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if (avifDecoderSetIOMemory(decoder, deco->buffer, deco->len) != AVIF_RESULT_OK)
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goto destroy_decoder;
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if (avifDecoderParse(decoder) != AVIF_RESULT_OK)
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goto destroy_decoder;
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cimg->width = decoder->image->width;
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cimg->height = decoder->image->height;
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cimg->buffer_bytes_per_pixel = 4;
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cimg->red_gamma = cimg->green_gamma = cimg->blue_gamma = (float)sRGB_gamma;
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cimg->strip_optimized = 0;
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if (avifDecoderNextImage(decoder) != AVIF_RESULT_OK)
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goto destroy_decoder;
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avifRGBImageSetDefaults(&ari, decoder->image);
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ari.depth = 8;
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ari.format = AVIF_RGB_FORMAT_RGBA;
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if (header_dimensions_known(cimg))
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goto destroy_decoder;
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ari.pixels = cimg->buffer;
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ari.rowBytes = (unsigned)cimg->width * 4;
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if (avifImageYUVToRGB(decoder->image, &ari) != AVIF_RESULT_OK)
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goto destroy_decoder;
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destroy_decoder:
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avifDecoderDestroy(decoder);
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end:
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img_end(cimg);
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}
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void avif_destroy_decoder(struct cached_image *cimg)
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{
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struct avif_decoder *deco = (struct avif_decoder *)cimg->decoder;
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mem_free(deco->buffer);
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}
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void add_avif_version(unsigned char **s, int *l)
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{
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add_to_str(s, l, cast_uchar "AVIF (");
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add_num_to_str(s, l, AVIF_VERSION_MAJOR);
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add_chr_to_str(s, l, '.');
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add_num_to_str(s, l, AVIF_VERSION_MINOR);
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add_chr_to_str(s, l, '.');
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add_num_to_str(s, l, AVIF_VERSION_PATCH);
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#ifdef AVIF_VERSION_DEVEL
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if (AVIF_VERSION_DEVEL) {
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add_chr_to_str(s, l, '-');
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add_num_to_str(s, l, AVIF_VERSION_DEVEL);
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}
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#endif
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add_chr_to_str(s, l, ')');
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}
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#endif
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#endif
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