840 static void AlphaApplyFilter(ALPHDecoder* const alph_dec,  in AlphaApplyFilter()  argument
843   if (alph_dec->filter_ != WEBP_FILTER_NONE) {  in AlphaApplyFilter()
845     const uint8_t* prev_line = alph_dec->prev_line_;  in AlphaApplyFilter()
846     assert(WebPUnfilters[alph_dec->filter_] != NULL);  in AlphaApplyFilter()
848       WebPUnfilters[alph_dec->filter_](prev_line, out, out, stride);  in AlphaApplyFilter()
852     alph_dec->prev_line_ = prev_line;  in AlphaApplyFilter()
859   ALPHDecoder* const alph_dec = (ALPHDecoder*)dec->io_->opaque;  in ExtractPalettedAlphaRows()  local
861       (alph_dec->filter_ == WEBP_FILTER_NONE ||  in ExtractPalettedAlphaRows()
862        alph_dec->filter_ == WEBP_FILTER_HORIZONTAL) ? dec->io_->crop_top  in ExtractPalettedAlphaRows()
869     uint8_t* out = alph_dec->output_ + width * first_row;  in ExtractPalettedAlphaRows()
877     AlphaApplyFilter(alph_dec, first_row, last_row, out, width);  in ExtractPalettedAlphaRows()
1549     ALPHDecoder* const alph_dec = (ALPHDecoder*)dec->io_->opaque;  in ExtractAlphaRows()  local
1550     uint8_t* const output = alph_dec->output_;  in ExtractAlphaRows()
1557     AlphaApplyFilter(alph_dec,  in ExtractAlphaRows()
1567 int VP8LDecodeAlphaHeader(ALPHDecoder* const alph_dec,  in VP8LDecodeAlphaHeader()  argument
1574   assert(alph_dec != NULL);  in VP8LDecodeAlphaHeader()
1576   dec->width_ = alph_dec->width_;  in VP8LDecodeAlphaHeader()
1577   dec->height_ = alph_dec->height_;  in VP8LDecodeAlphaHeader()
1578   dec->io_ = &alph_dec->io_;  in VP8LDecodeAlphaHeader()
1579   dec->io_->opaque = alph_dec;  in VP8LDecodeAlphaHeader()
1580   dec->io_->width = alph_dec->width_;  in VP8LDecodeAlphaHeader()
1581   dec->io_->height = alph_dec->height_;  in VP8LDecodeAlphaHeader()
1586   if (!DecodeImageStream(alph_dec->width_, alph_dec->height_, 1, dec, NULL)) {  in VP8LDecodeAlphaHeader()
1596     alph_dec->use_8b_decode_ = 1;  in VP8LDecodeAlphaHeader()
1600     alph_dec->use_8b_decode_ = 0;  in VP8LDecodeAlphaHeader()
1601     ok = AllocateInternalBuffers32b(dec, alph_dec->width_);  in VP8LDecodeAlphaHeader()
1607   alph_dec->vp8l_dec_ = dec;  in VP8LDecodeAlphaHeader()
1615 int VP8LDecodeAlphaImageStream(ALPHDecoder* const alph_dec, int last_row) {  in VP8LDecodeAlphaImageStream()  argument
1616   VP8LDecoder* const dec = alph_dec->vp8l_dec_;  in VP8LDecodeAlphaImageStream()
1624   if (!alph_dec->use_8b_decode_) WebPInitAlphaProcessing();  in VP8LDecodeAlphaImageStream()
1627   return alph_dec->use_8b_decode_ ?  in VP8LDecodeAlphaImageStream()