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NVIDIA Performance Primitives (NPP)
Version 10.0
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JPEG scan descriptor. More...
#include <nppi_compression_functions.h>
Data Fields | |
| Npp8u | nComponents |
| Number of components present in scan. More... | |
| Npp8u | aComponentIdx [4] |
| Frame-indexes of components. More... | |
| Npp8u | aComponentDcHtSel [4] |
| DC Huffman table selector per component. More... | |
| Npp8u | aComponentAcHtSel [4] |
| AC Huffman table selector per component. More... | |
| const Npp8u * | apRawDcHtTable [4] |
Pointers to DC Huffman table description in the raw format (the same format as used in JPEG header). More... | |
| const Npp8u * | apRawAcHtTable [4] |
| See apRawDcHtTable. More... | |
| Npp8u | nSs |
| Start of spectral selection (index of first coefficient), 0-63. More... | |
| Npp8u | nSe |
| End of spectral selection (index of first coefficient), 0-63. More... | |
| Npp8u | nAh |
| Successive approximation bit position high. More... | |
| Npp8u | nAl |
| Successive approximation bit position low. More... | |
| Npp32s | restartInterval |
| Restart interval in MCUs. More... | |
| Npp32s | length |
| Length of compressed (encoded) scan data. More... | |
JPEG scan descriptor.
| Npp8u NppiJpegScanDescr::aComponentAcHtSel[4] |
AC Huffman table selector per component.
| Npp8u NppiJpegScanDescr::aComponentDcHtSel[4] |
DC Huffman table selector per component.
| Npp8u NppiJpegScanDescr::aComponentIdx[4] |
Frame-indexes of components.
These values will be used to index arrays in NppiJpegFrameDescr
| const Npp8u* NppiJpegScanDescr::apRawAcHtTable[4] |
See apRawDcHtTable.
| const Npp8u* NppiJpegScanDescr::apRawDcHtTable[4] |
Pointers to DC Huffman table description in the raw format
(the same format as used in JPEG header).
This array will be indexed by aComponentDcHtSel. Pointers for tables unused in scan may be set to NULL.
| Npp32s NppiJpegScanDescr::length |
Length of compressed (encoded) scan data.
| Npp8u NppiJpegScanDescr::nAh |
Successive approximation bit position high.
| Npp8u NppiJpegScanDescr::nAl |
Successive approximation bit position low.
| Npp8u NppiJpegScanDescr::nComponents |
Number of components present in scan.
| Npp8u NppiJpegScanDescr::nSe |
End of spectral selection (index of first coefficient), 0-63.
| Npp8u NppiJpegScanDescr::nSs |
Start of spectral selection (index of first coefficient), 0-63.
| Npp32s NppiJpegScanDescr::restartInterval |
Restart interval in MCUs.
Use 0 or -1 when none