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spng_encode_image(): cleanup

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Randy 2022-01-05 13:31:02 +01:00
parent 01b6f31359
commit 371a2f01ca
1 changed files with 5 additions and 4 deletions
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9
spng/spng.c
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@ -169,7 +169,7 @@ struct encode_flags
unsigned progressive: 1;
unsigned finalize: 1;
int filter_choice;
enum spng_filter_choice filter_choice;
};
struct spng_chunk_bitfield
@ -4719,20 +4719,21 @@ int spng_encode_image(spng_ctx *ctx, const void *img, size_t len, int fmt, int f
if(ihdr->bit_depth < 8) ctx->bytes_per_pixel = 1;
else ctx->bytes_per_pixel = ctx->channels * (ihdr->bit_depth / 8);
/* Filtering would make no difference */
if(!ctx->image_options.compression_level)
{
encode_flags->filter_choice = 0; /* Filtering would make no difference */
encode_flags->filter_choice = SPNG_DISABLE_FILTERING;
}
if(ihdr->color_type == SPNG_COLOR_TYPE_INDEXED || ihdr->bit_depth < 8)
{
encode_flags->filter_choice = 0;
encode_flags->filter_choice = SPNG_DISABLE_FILTERING;
}
/* This is the same as disabling filtering */
if(encode_flags->filter_choice == SPNG_FILTER_CHOICE_NONE)
{
encode_flags->filter_choice = 0;
encode_flags->filter_choice = SPNG_DISABLE_FILTERING;
}
if(!encode_flags->filter_choice)