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Allow transform_bits to be different during encoding.

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The spec allows it but it is currently forced to the same value for simplicity.

Change-Id: I26197dbf3342f7a72115cc7f7805c154313a2afb
This commit is contained in:
Vincent Rabaud
2024-05-07 10:44:59 +02:00
parent 1e462ca80e
commit 1bf198a22b
5 changed files with 37 additions and 18 deletions
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7
src/webp/encode.h
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@ -20,7 +20,7 @@
extern "C" {
#endif
#define WEBP_ENCODER_ABI_VERSION 0x020f // MAJOR(8b) + MINOR(8b)
#define WEBP_ENCODER_ABI_VERSION 0x0210 // MAJOR(8b) + MINOR(8b)
// Note: forward declaring enumerations is not allowed in (strict) C and C++,
// the types are left here for reference.
@ -224,14 +224,15 @@ struct WebPAuxStats {
uint32_t lossless_features; // bit0:predictor bit1:cross-color transform
// bit2:subtract-green bit3:color indexing
int histogram_bits; // number of precision bits of histogram
int transform_bits; // precision bits for transform
int transform_bits; // precision bits for predictor transform
int cache_bits; // number of bits for color cache lookup
int palette_size; // number of color in palette, if used
int lossless_size; // final lossless size
int lossless_hdr_size; // lossless header (transform, huffman etc) size
int lossless_data_size; // lossless image data size
int cross_color_transform_bits; // precision bits for cross-color transform
uint32_t pad[2]; // padding for later use
uint32_t pad[1]; // padding for later use
};
// Signature for output function. Should return true if writing was successful.