private void DecodeScanBaseline(
PdfJsHuffmanTables dcHuffmanTables,
PdfJsHuffmanTables acHuffmanTables,
PdfJsFrameComponent[] components,
int componentsLength,
int mcusPerLine,
int mcuToRead,
ref int mcu,
Stream stream)
{
if (componentsLength == 1)
{
PdfJsFrameComponent component = components[this.compIndex];
ref PdfJsHuffmanTable dcHuffmanTable = ref dcHuffmanTables[component.DCHuffmanTableId];
ref PdfJsHuffmanTable acHuffmanTable = ref acHuffmanTables[component.ACHuffmanTableId];
private void ParseBaselineDataInterleaved()
{
// Interleaved
int mcu = 0;
int mcusPerColumn = this.frame.McusPerColumn;
int mcusPerLine = this.frame.McusPerLine;
for (int j = 0; j < mcusPerColumn; j++)
{
for (int i = 0; i < mcusPerLine; i++)
{
// Scan an interleaved mcu... process components in order
for (int k = 0; k < this.componentsLength; k++)
{
PdfJsFrameComponent component = this.components[k];
ref PdfJsHuffmanTable dcHuffmanTable = ref this.dcHuffmanTables[component.DCHuffmanTableId];
ref PdfJsHuffmanTable acHuffmanTable = ref this.acHuffmanTables[component.ACHuffmanTableId];
ref short fastACRef = ref this.fastACTables.GetAcTableReference(component);
int h = component.HorizontalSamplingFactor;
int v = component.VerticalSamplingFactor;
// Scan out an mcu's worth of this component; that's just determined
// by the basic H and V specified for the component
for (int y = 0; y < v; y++)
{
for (int x = 0; x < h; x++)
{
if (this.eof)
{
return;
}
int mcuRow = mcu / mcusPerLine;
int mcuCol = mcu % mcusPerLine;
int blockRow = (mcuRow * v) + y;
int blockCol = (mcuCol * h) + x;
this.DecodeBlockBaseline(
component,
blockRow,
blockCol,
ref dcHuffmanTable,
ref acHuffmanTable,
ref fastACRef);
}
}
}
