g2meet.c File Reference

Go2Webinar / Go2Meeting decoder. More...

#include <inttypes.h>
#include <zlib.h>
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "bytestream.h"
#include "elsdec.h"
#include "get_bits.h"
#include "idctdsp.h"
#include "internal.h"
#include "jpegtables.h"
#include "mjpeg.h"

Classes
struct	ePICPixListElem
struct	ePICPixHashElem
struct	ePICPixHash
struct	ePICContext
struct	JPGContext
struct	G2MContext

Macros
#define	EPIC_PIX_STACK_SIZE   1024
#define	EPIC_PIX_STACK_MAX   (EPIC_PIX_STACK_SIZE - 1)
#define	EPIC_HASH_SIZE   256
#define	LOAD_NEIGHBOURS(x)
#define	UPDATE_NEIGHBOURS(x)
#define	R_shift   16
#define	G_shift   8
#define	B_shift   0
#define	TOSIGNED(val)   (((val) >> 1) ^ -((val) & 1))
#define	APPLY_ALPHA(src, new, alpha)   src = (src * (256 - alpha) + new * alpha) >> 8

Typedefs
typedef struct ePICPixListElem	ePICPixListElem
typedef struct ePICPixHashElem	ePICPixHashElem
typedef struct ePICPixHash	ePICPixHash
typedef struct ePICContext	ePICContext
typedef struct JPGContext	JPGContext
typedef struct G2MContext	G2MContext

Enumerations
enum	ChunkType {   DISPLAY_INFO = 0xC8, TILE_DATA, CURSOR_POS, CURSOR_SHAPE,   CHUNK_CC, CHUNK_CD, CHUNK_TYPE_DATA = 0x4424, CHUNK_TYPE_ASF_HEADER = 0x4824,   CHUNK_TYPE_END = 0x4524, CHUNK_TYPE_STREAM_CHANGE = 0x4324 }
enum	Compression { COMPR_EPIC_J_B = 2, COMPR_KEMPF_J_B }

Variables
AVCodec	ff_g2m_decoder

Detailed Description

Go2Webinar / Go2Meeting decoder.

Macro Definition Documentation

LOAD_NEIGHBOURS

#define LOAD_NEIGHBOURS

(

x

)

Value:

W   = curr_row[(x)   - 1];  \
    N   = above_row[(x)];       \
    WW  = curr_row[(x)   - 2];  \
    NW  = above_row[(x)  - 1];  \
    NE  = above_row[(x)  + 1];  \
    NN  = above2_row[(x)];      \
    NNW = above2_row[(x) - 1];  \
    NWW = above_row[(x)  - 2];  \
    NNE = above2_row[(x) + 1]

UPDATE_NEIGHBOURS

#define UPDATE_NEIGHBOURS

(

x

)

Value:

NNW = NN;                   \
    NN  = NNE;                  \
    NWW = NW;                   \
    NW  = N;                    \
    N   = NE;                   \
    NE  = above_row[(x)  + 1];  \
    NNE = above2_row[(x) + 1]

Variable Documentation

ff_g2m_decoder

AVCodec ff_g2m_decoder

Initial value:

= {
    .name           = "g2m",
    .long_name      = NULL_IF_CONFIG_SMALL("Go2Meeting"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_G2M,
    .priv_data_size = sizeof(G2MContext),
    .init           = g2m_decode_init,
    .close          = g2m_decode_end,
    .decode         = g2m_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
}