Lines Matching refs:num_rows
84 // Decodes, unfilters and dequantizes *at least* 'num_rows' rows of alpha
88 static int ALPHDecode(VP8Decoder* const dec, int row, int num_rows) {
96 const size_t num_pixels = num_rows * width;
102 if (!VP8LDecodeAlphaImageStream(alph_dec, row + num_rows)) {
108 unfilter_func(width, height, width, row, num_rows, output);
111 if (row + num_rows == dec->pic_hdr_.height_) {
121 int row, int num_rows) {
125 if (row < 0 || num_rows <= 0 || row + num_rows > height) {
144 num_rows = height; // decode everything in one pass
151 ok = ALPHDecode(dec, row, num_rows);
