go-libwebp

sharpyuv_stub.c (1642B)

---

 // Stub replacements for libwebp's sharpyuv library, used by the transpiled
 // backend only.
 //
 // sharpyuv/sharpyuv_gamma.c is the only file in libwebp that calls expf() and
 // logf(), and modernc.org/libc provides Xexpf/Xlogf for linux targets only.
 // Transpiling sharpyuv therefore fails to link on darwin and windows.
 //
 // Nothing here is reachable: sharpyuv is entered only through
 // WebPConfig.use_sharp_yuv, and this package always encodes via
 // WebPEncodeRGBA / WebPEncodeLosslessRGBA, which use the default config.
 // SharpYuvConvert returning 0 is the library's own failure signal, so a
 // caller that did enable sharp YUV would get a clean encode error rather
 // than wrong output.
 
 #include "sharpyuv/sharpyuv.h"
 #include "sharpyuv/sharpyuv_csp.h"
 #include "src/dsp/cpu.h"
 
 void SharpYuvInit(VP8CPUInfo cpu_info_func) { (void)cpu_info_func; }
 
 const SharpYuvConversionMatrix* SharpYuvGetConversionMatrix(
     SharpYuvMatrixType matrix_type) {
   (void)matrix_type;
   return NULL;
 }
 
 int SharpYuvConvert(const void* r_ptr, const void* g_ptr, const void* b_ptr,
                     int rgb_step, int rgb_stride, int rgb_bit_depth,
                     void* y_ptr, int y_stride, void* u_ptr, int u_stride,
                     void* v_ptr, int v_stride, int yuv_bit_depth, int width,
                     int height, const SharpYuvConversionMatrix* yuv_matrix) {
   (void)r_ptr; (void)g_ptr; (void)b_ptr; (void)rgb_step; (void)rgb_stride;
   (void)rgb_bit_depth; (void)y_ptr; (void)y_stride; (void)u_ptr;
   (void)u_stride; (void)v_ptr; (void)v_stride; (void)yuv_bit_depth;
   (void)width; (void)height; (void)yuv_matrix;
   return 0;
 }