diff options
Diffstat (limited to 'src/3rdparty/libwebp/src/webp/encode.h')
| -rw-r--r-- | src/3rdparty/libwebp/src/webp/encode.h | 43 |
1 files changed, 29 insertions, 14 deletions
diff --git a/src/3rdparty/libwebp/src/webp/encode.h b/src/3rdparty/libwebp/src/webp/encode.h index 9291b71..35fde1d 100644 --- a/src/3rdparty/libwebp/src/webp/encode.h +++ b/src/3rdparty/libwebp/src/webp/encode.h @@ -20,7 +20,7 @@ extern "C" { #endif -#define WEBP_ENCODER_ABI_VERSION 0x0209 // MAJOR(8b) + MINOR(8b) +#define WEBP_ENCODER_ABI_VERSION 0x020e // MAJOR(8b) + MINOR(8b) // Note: forward declaring enumerations is not allowed in (strict) C and C++, // the types are left here for reference. @@ -141,12 +141,10 @@ struct WebPConfig { // RGB information for better compression. The default // value is 0. -#ifdef WEBP_EXPERIMENTAL_FEATURES - int delta_palettization; + int use_delta_palette; // reserved for future lossless feature + int use_sharp_yuv; // if needed, use sharp (and slow) RGB->YUV conversion + uint32_t pad[2]; // padding for later use -#else - uint32_t pad[3]; // padding for later use -#endif // WEBP_EXPERIMENTAL_FEATURES }; // Enumerate some predefined settings for WebPConfig, depending on the type @@ -388,9 +386,24 @@ WEBP_EXTERN(void) WebPPictureFree(WebPPicture* picture); // Returns false in case of memory allocation error. WEBP_EXTERN(int) WebPPictureCopy(const WebPPicture* src, WebPPicture* dst); +// Compute the single distortion for packed planes of samples. +// 'src' will be compared to 'ref', and the raw distortion stored into +// '*distortion'. The refined metric (log(MSE), log(1 - ssim),...' will be +// stored in '*result'. +// 'x_step' is the horizontal stride (in bytes) between samples. +// 'src/ref_stride' is the byte distance between rows. +// Returns false in case of error (bad parameter, memory allocation error, ...). +WEBP_EXTERN(int) WebPPlaneDistortion(const uint8_t* src, size_t src_stride, + const uint8_t* ref, size_t ref_stride, + int width, int height, + size_t x_step, + int type, // 0 = PSNR, 1 = SSIM, 2 = LSIM + float* distortion, float* result); + // Compute PSNR, SSIM or LSIM distortion metric between two pictures. Results -// are in dB, stored in result[] in the Y/U/V/Alpha/All or B/G/R/A/All order. -// Returns false in case of error (src and ref don't have same dimension, ...) +// are in dB, stored in result[] in the B/G/R/A/All order. The distortion is +// always performed using ARGB samples. Hence if the input is YUV(A), the +// picture will be internally converted to ARGB (just for the measurement). // Warning: this function is rather CPU-intensive. WEBP_EXTERN(int) WebPPictureDistortion( const WebPPicture* src, const WebPPicture* ref, @@ -473,18 +486,20 @@ WEBP_EXTERN(int) WebPPictureARGBToYUVA(WebPPicture* picture, WEBP_EXTERN(int) WebPPictureARGBToYUVADithered( WebPPicture* picture, WebPEncCSP colorspace, float dithering); -// Performs 'smart' RGBA->YUVA420 downsampling and colorspace conversion. +// Performs 'sharp' RGBA->YUVA420 downsampling and colorspace conversion. // Downsampling is handled with extra care in case of color clipping. This // method is roughly 2x slower than WebPPictureARGBToYUVA() but produces better -// YUV representation. +// and sharper YUV representation. // Returns false in case of error. +WEBP_EXTERN(int) WebPPictureSharpARGBToYUVA(WebPPicture* picture); +// kept for backward compatibility: WEBP_EXTERN(int) WebPPictureSmartARGBToYUVA(WebPPicture* picture); // Converts picture->yuv to picture->argb and sets picture->use_argb to true. -// The input format must be YUV_420 or YUV_420A. -// Note that the use of this method is discouraged if one has access to the -// raw ARGB samples, since using YUV420 is comparatively lossy. Also, the -// conversion from YUV420 to ARGB incurs a small loss too. +// The input format must be YUV_420 or YUV_420A. The conversion from YUV420 to +// ARGB incurs a small loss too. +// Note that the use of this colorspace is discouraged if one has access to the +// raw ARGB samples, since using YUV420 is comparatively lossy. // Returns false in case of error. WEBP_EXTERN(int) WebPPictureYUVAToARGB(WebPPicture* picture); |