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libfreerdp-codec: start working on progressive dequantization

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This commit is contained in:
Marc-André Moreau 2014-08-18 19:12:08 -04:00
parent a2f0e93770
commit 6744bbe7ae
3 changed files with 62 additions and 2 deletions
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39
libfreerdp/codec/progressive.c
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@ -25,9 +25,13 @@
#include <winpr/print.h>
#include <winpr/bitstream.h>
#include <freerdp/primitives.h>
#include <freerdp/codec/color.h>
#include <freerdp/codec/progressive.h>
#include "rfx_differential.h"
#include "rfx_quantization.h"
const char* progressive_get_block_type_string(UINT16 blockType)
{
switch (blockType)
@ -72,16 +76,51 @@ const char* progressive_get_block_type_string(UINT16 blockType)
return "PROGRESSIVE_WBT_UNKNOWN";
}
/*
* Band Offset Dimensions Size
*
* HL1 0 31x33 1023
* LH1 1023 33x31 1023
* HH1 2046 31x31 961
*
* HL2 3007 16x17 272
* LH2 3279 17x16 272
* HH2 3551 16x16 256
*
* HL3 3807 8x9 72
* LH3 3879 9x8 72
* HH3 3951 8x8 64
*
* LL3 4015 9x9 81
*/
int progressive_rfx_decode_component(PROGRESSIVE_CONTEXT* progressive,
RFX_COMPONENT_CODEC_QUANT* quant, const BYTE* data, int length, INT16* buffer)
{
int status;
const primitives_t* prims = primitives_get();
status = rfx_rlgr_decode(data, length, buffer, 4096, 1);
if (status < 0)
return status;
rfx_differential_decode(&buffer[4015], 81); /* LL3 */
/* Scale the values so that they are represented as 11.5 fixed-point number */
rfx_quantization_decode_block(prims, buffer, 4096, 5);
rfx_quantization_decode_block(prims, &buffer[0], 1023, (quant->HL1 - 6)); /* HL1 */
rfx_quantization_decode_block(prims, &buffer[1023], 1023, (quant->LH1 - 6)); /* LH1 */
rfx_quantization_decode_block(prims, &buffer[2046], 961, (quant->HH1 - 6)); /* HH1 */
rfx_quantization_decode_block(prims, &buffer[3007], 272, (quant->HL2 - 6)); /* HL2 */
rfx_quantization_decode_block(prims, &buffer[3279], 272, (quant->LH2 - 6)); /* LH2 */
rfx_quantization_decode_block(prims, &buffer[3551], 256, (quant->HH2 - 6)); /* HH2 */
rfx_quantization_decode_block(prims, &buffer[3807], 72, (quant->HL3 - 6)); /* HL3 */
rfx_quantization_decode_block(prims, &buffer[3879], 72, (quant->LH3 - 6)); /* LH3 */
rfx_quantization_decode_block(prims, &buffer[3951], 64, (quant->HH3 - 6)); /* HH3 */
rfx_quantization_decode_block(prims, &buffer[4015], 81, (quant->LL3 - 6)); /* LL3 */
return 1;
}

21
libfreerdp/codec/rfx_quantization.c
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@ -22,9 +22,28 @@
#endif
#include <freerdp/primitives.h>
#include "rfx_quantization.h"
static void rfx_quantization_decode_block(const primitives_t *prims, INT16* buffer, int buffer_size, UINT32 factor)
/*
* Band Offset Size
*
* HL1 0 1024
* LH1 1024 1024
* HH1 2048 1024
*
* HL2 3072 256
* LH2 3328 256
* HH2 3584 256
*
* HL3 3840 64
* LH3 3904 64
* HH3 3968 64
*
* LL3 4032 64
*/
void rfx_quantization_decode_block(const primitives_t *prims, INT16* buffer, int buffer_size, UINT32 factor)
{
if (factor == 0)
return;

2
libfreerdp/codec/rfx_quantization.h
View File

@ -25,4 +25,6 @@
void rfx_quantization_decode(INT16* buffer, const UINT32* quantization_values);
void rfx_quantization_encode(INT16* buffer, const UINT32* quantization_values);
void rfx_quantization_decode_block(const primitives_t *prims, INT16* buffer, int buffer_size, UINT32 factor);
#endif /* __RFX_QUANTIZATION_H */