iff.c File Reference

IFF ACBM/ANIM/DEEP/ILBM/PBM/RGB8/RGBN bitmap decoder. More...

#include <stdint.h>
#include "libavutil/imgutils.h"
#include "bytestream.h"
#include "avcodec.h"
#include "internal.h"
#include "mathops.h"

Classes
struct	IffContext

Macros
#define	LUT8_PART(plane, v)
#define	LUT8(plane)
#define	LUT32(plane)
#define	DECODE_HAM_PLANE32(x)
#define	DECODE_RGBX_COMMON(type)
#define	GETNIBBLE   ((i & 1) ? (src[i>>1] & 0xF) : (src[i>>1] >> 4))

Typedefs
typedef struct IffContext	IffContext

Enumerations
enum	mask_type { MASK_NONE, MASK_HAS_MASK, MASK_HAS_TRANSPARENT_COLOR, MASK_LASSO }

Detailed Description

IFF ACBM/ANIM/DEEP/ILBM/PBM/RGB8/RGBN bitmap decoder.

Macro Definition Documentation

DECODE_HAM_PLANE32

#define DECODE_HAM_PLANE32

(

x

)

Value:

first       = buf[x] << 1;      \
    second      = buf[(x)+1] << 1;  \
    delta      &= pal[first++];     \
    delta      |= pal[first];       \
    dst[x]      = delta;            \
    delta      &= pal[second++];    \
    delta      |= pal[second];      \
    dst[(x)+1]  = delta

DECODE_RGBX_COMMON

#define DECODE_RGBX_COMMON

(

type

)

Value:

if (!length) { \
        length = bytestream2_get_byte(gb); \
        if (!length) { \
            length = bytestream2_get_be16(gb); \
            if (!length) \
                return; \
        } \
    } \
    for (i = 0; i < length; i++) { \
        *(type *)(dst + y*linesize + x * sizeof(type)) = pixel; \
        x += 1; \
        if (x >= width) { \
            y += 1; \
            if (y >= height) \
                return; \
            x = 0; \
        } \
    }

LUT32

#define LUT32

(

plane

)

Value:

{                                \
             0,          0,          0,          0,   \
             0,          0,          0, 1 << plane,   \
             0,          0, 1 << plane,          0,   \
             0,          0, 1 << plane, 1 << plane,   \
             0, 1 << plane,          0,          0,   \
             0, 1 << plane,          0, 1 << plane,   \
             0, 1 << plane, 1 << plane,          0,   \
             0, 1 << plane, 1 << plane, 1 << plane,   \
    1 << plane,          0,          0,          0,   \
    1 << plane,          0,          0, 1 << plane,   \
    1 << plane,          0, 1 << plane,          0,   \
    1 << plane,          0, 1 << plane, 1 << plane,   \
    1 << plane, 1 << plane,          0,          0,   \
    1 << plane, 1 << plane,          0, 1 << plane,   \
    1 << plane, 1 << plane, 1 << plane,          0,   \
    1 << plane, 1 << plane, 1 << plane, 1 << plane,   \
}

LUT8

#define LUT8

(

plane

)

Value:

{                           \
    LUT8_PART(plane, 0x0000000),                \
    LUT8_PART(plane, 0x1000000),                \
    LUT8_PART(plane, 0x0010000),                \
    LUT8_PART(plane, 0x1010000),                \
    LUT8_PART(plane, 0x0000100),                \
    LUT8_PART(plane, 0x1000100),                \
    LUT8_PART(plane, 0x0010100),                \
    LUT8_PART(plane, 0x1010100),                \
    LUT8_PART(plane, 0x0000001),                \
    LUT8_PART(plane, 0x1000001),                \
    LUT8_PART(plane, 0x0010001),                \
    LUT8_PART(plane, 0x1010001),                \
    LUT8_PART(plane, 0x0000101),                \
    LUT8_PART(plane, 0x1000101),                \
    LUT8_PART(plane, 0x0010101),                \
    LUT8_PART(plane, 0x1010101),                \
}

LUT8_PART

#define LUT8_PART	(		plane,
			v
	)

Value:

AV_LE2NE64C(UINT64_C(0x0000000)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x1000000)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x0010000)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x1010000)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x0000100)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x1000100)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x0010100)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x1010100)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x0000001)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x1000001)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x0010001)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x1010001)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x0000101)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x1000101)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x0010101)<<32 | v) << plane,  \
    AV_LE2NE64C(UINT64_C(0x1010101)<<32 | v) << plane