int WebPRescalerImport(WebPRescaler* const wrk, int num_lines,
const uint8_t* src, int src_stride) {
int total_imported = 0;
while (total_imported < num_lines && wrk->y_accum > 0) {
int channel;
for (channel = 0; channel < wrk->num_channels; ++channel) {
WebPRescalerImportRow(wrk, src, channel);
}
src += src_stride;
++total_imported;
wrk->y_accum -= wrk->y_sub;
}
return total_imported;
}
int WebPRescalerImport(WebPRescaler* const wrk, int num_lines,
const uint8_t* src, int src_stride) {
int total_imported = 0;
while (total_imported < num_lines && !WebPRescalerHasPendingOutput(wrk)) {
if (wrk->y_expand) {
rescaler_t* const tmp = wrk->irow;
wrk->irow = wrk->frow;
wrk->frow = tmp;
}
WebPRescalerImportRow(wrk, src);
if (!wrk->y_expand) { // Accumulate the contribution of the new row.
int x;
for (x = 0; x < wrk->num_channels * wrk->dst_width; ++x) {
wrk->irow[x] += wrk->frow[x];
}
}
++wrk->src_y;
src += src_stride;
++total_imported;
wrk->y_accum -= wrk->y_sub;
}
return total_imported;
}
