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Added image characteristic hint for the codec.

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This image type hint is used by codec to apply appropriate set of
transform filters to the image.

Change-Id: Ibb24e47ba14c40fa7f9f2c50ae86e03f2b29e9a6
This commit is contained in:
Vikas Arora
2012-06-22 12:14:48 +05:30
parent e8a0a821d2
commit d373076a53
5 changed files with 44 additions and 8 deletions
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8
src/webp/encode.h
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@ -46,6 +46,13 @@ WEBP_EXTERN(size_t) WebPEncodeBGRA(const uint8_t* bgra,
//------------------------------------------------------------------------------
// Coding parameters
// Image characteristics hint for the underlying encoder.
typedef enum {
WEBP_HINT_DEFAULT = 0, // default preset.
WEBP_HINT_PICTURE, // digital picture, like portrait, inner shot
WEBP_HINT_PHOTO // outdoor photograph, with natural lighting
} WebPImageHint;
typedef struct {
float quality; // between 0 (smallest file) and 100 (biggest)
int target_size; // if non-zero, set the desired target size in bytes.
@ -77,6 +84,7 @@ typedef struct {
int alpha_quality; // Between 0 (smallest size) and 100 (lossless).
// Default is 100.
int lossless; // Lossless encoding (0=lossy(default), 1=lossless).
WebPImageHint image_hint; // Hint for image type.
} WebPConfig;
// Enumerate some predefined settings for WebPConfig, depending on the type