69     : fImpl(skstd::make_unique<SkDeflateWStream::Impl>()) {  in SkDeflateWStream()
70     fImpl->fOut = out;  in SkDeflateWStream()
71     fImpl->fInBufferIndex = 0;  in SkDeflateWStream()
72     if (!fImpl->fOut) {  in SkDeflateWStream()
75     fImpl->fZStream.next_in = nullptr;  in SkDeflateWStream()
76     fImpl->fZStream.zalloc = &skia_alloc_func;  in SkDeflateWStream()
77     fImpl->fZStream.zfree = &skia_free_func;  in SkDeflateWStream()
78     fImpl->fZStream.opaque = nullptr;  in SkDeflateWStream()
80     SkDEBUGCODE(int r =) deflateInit2(&fImpl->fZStream, compressionLevel,  in SkDeflateWStream()
90     if (!fImpl->fOut) {  in finalize()
93     do_deflate(Z_FINISH, &fImpl->fZStream, fImpl->fOut, fImpl->fInBuffer,  in finalize()
94                fImpl->fInBufferIndex);  in finalize()
95     (void)deflateEnd(&fImpl->fZStream);  in finalize()
96     fImpl->fOut = nullptr;  in finalize()
101     if (!fImpl->fOut) {  in write()
107                 SkTMin(len, sizeof(fImpl->fInBuffer) - fImpl->fInBufferIndex);  in write()
108         memcpy(fImpl->fInBuffer + fImpl->fInBufferIndex, buffer, tocopy);  in write()
111         fImpl->fInBufferIndex += tocopy;  in write()
112         SkASSERT(fImpl->fInBufferIndex <= sizeof(fImpl->fInBuffer));  in write()
115         if (sizeof(fImpl->fInBuffer) == fImpl->fInBufferIndex) {  in write()
116             do_deflate(Z_NO_FLUSH, &fImpl->fZStream, fImpl->fOut,  in write()
117                        fImpl->fInBuffer, fImpl->fInBufferIndex);  in write()
118             fImpl->fInBufferIndex = 0;  in write()
125     return fImpl->fZStream.total_in + fImpl->fInBufferIndex;  in bytesWritten()