tscc2.c File Reference

TechSmith Screen Codec 2 decoder. More...

#include <inttypes.h>
#include "avcodec.h"
#include "bytestream.h"
#include "get_bits.h"
#include "internal.h"
#include "mathops.h"
#include "tscc2data.h"

Classes
struct	TSCC2Context

Macros
#define	BITSTREAM_READER_LE
#define	DEQUANT(val, q)   (((q) * (val) + 0x80) >> 8)
#define	DCT1D(d0, d1, d2, d3, s0, s1, s2, s3, OP)
#define	COL_OP(a, b)   a = (b)
#define	ROW_OP(a, b)   a = ((b) + 0x20) >> 6

Typedefs
typedef struct TSCC2Context	TSCC2Context

Variables
AVCodec	ff_tscc2_decoder

Detailed Description

TechSmith Screen Codec 2 decoder.

Macro Definition Documentation

DCT1D

#define DCT1D	(		d0,
			d1,
			d2,
			d3,
			s0,
			s1,
			s2,
			s3,
			OP
	)

Value:

OP(d0, 5 * ((s0) + (s1) + (s2)) + 2 * (s3));  \
    OP(d1, 5 * ((s0) - (s2) - (s3)) + 2 * (s1));  \
    OP(d2, 5 * ((s0) - (s2) + (s3)) - 2 * (s1));  \
    OP(d3, 5 * ((s0) - (s1) + (s2)) - 2 * (s3));  \

Variable Documentation

ff_tscc2_decoder

AVCodec ff_tscc2_decoder

Initial value:

= {
    .name           = "tscc2",
    .long_name      = NULL_IF_CONFIG_SMALL("TechSmith Screen Codec 2"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_TSCC2,
    .priv_data_size = sizeof(TSCC2Context),
    .init           = tscc2_decode_init,
    .close          = tscc2_decode_end,
    .decode         = tscc2_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
}