ulti.c File Reference

IBM Ultimotion Video Decoder. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "ulti_cb.h"

Go to the source code of this file.

Data Structures
struct	UltimotionDecodeContext

Functions
static av_cold int	ulti_decode_init (AVCodecContext *avctx)
static av_cold int	ulti_decode_end (AVCodecContext *avctx)
static void	ulti_convert_yuv (AVFrame *frame, int x, int y, uint8_t *luma, int chroma)
static void	ulti_pattern (AVFrame *frame, int x, int y, int f0, int f1, int Y0, int Y1, int chroma)
static void	ulti_grad (AVFrame *frame, int x, int y, uint8_t *Y, int chroma, int angle)
static int	ulti_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)

Variables
static const int	block_coords [8]
static const int	angle_by_index [4] = { 0, 2, 6, 12}
static const uint8_t	ulti_lumas [64]
static const uint8_t	ulti_chromas [16]
AVCodec	ff_ulti_decoder

Detailed Description

IBM Ultimotion Video Decoder.

Definition in file ulti.c.

Function Documentation

static av_cold int ulti_decode_init ( AVCodecContext *  avctx )

static

Definition at line 45 of file ulti.c.

static av_cold int ulti_decode_end ( AVCodecContext *  avctx )

static

Definition at line 63 of file ulti.c.

static void ulti_convert_yuv ( AVFrame *  frame, int  x, int  y, uint8_t *  luma, int  chroma  )

static

Definition at line 93 of file ulti.c.

Referenced by ulti_decode_frame(), ulti_grad(), and ulti_pattern().

static void ulti_pattern ( AVFrame *  frame, int  x, int  y, int  f0, int  f1, int  Y0, int  Y1, int  chroma  )

static

Definition at line 117 of file ulti.c.

Referenced by ulti_decode_frame().

static void ulti_grad ( AVFrame *  frame, int  x, int  y, uint8_t *  Y, int  chroma, int  angle  )

static

Definition at line 140 of file ulti.c.

Referenced by ulti_decode_frame().

static int ulti_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 213 of file ulti.c.

Variable Documentation

const int block_coords[8]

static

Initial value:

= 
    { 0, 0, 0, 4, 4, 4, 4, 0}

Definition at line 71 of file ulti.c.

Referenced by ulti_decode_frame().

const int angle_by_index[4] = { 0, 2, 6, 12}

static

Definition at line 74 of file ulti.c.

Referenced by ulti_decode_frame().

const uint8_t ulti_lumas[64]

static

Initial value:

=
    { 0x10, 0x13, 0x17, 0x1A, 0x1E, 0x21, 0x25, 0x28,
      0x2C, 0x2F, 0x33, 0x36, 0x3A, 0x3D, 0x41, 0x44,
      0x48, 0x4B, 0x4F, 0x52, 0x56, 0x59, 0x5C, 0x60,
      0x63, 0x67, 0x6A, 0x6E, 0x71, 0x75, 0x78, 0x7C,
      0x7F, 0x83, 0x86, 0x8A, 0x8D, 0x91, 0x94, 0x98,
      0x9B, 0x9F, 0xA2, 0xA5, 0xA9, 0xAC, 0xB0, 0xB3,
      0xB7, 0xBA, 0xBE, 0xC1, 0xC5, 0xC8, 0xCC, 0xCF,
      0xD3, 0xD6, 0xDA, 0xDD, 0xE1, 0xE4, 0xE8, 0xEB}

Definition at line 77 of file ulti.c.

Referenced by ulti_convert_yuv().

const uint8_t ulti_chromas[16]

static

Initial value:

=
    { 0x60, 0x67, 0x6D, 0x73, 0x7A, 0x80, 0x86, 0x8D,
      0x93, 0x99, 0xA0, 0xA6, 0xAC, 0xB3, 0xB9, 0xC0}

Definition at line 87 of file ulti.c.

Referenced by ulti_convert_yuv().

AVCodec ff_ulti_decoder

Initial value:

= {
    .name           = "ultimotion",
    .long_name      = NULL_IF_CONFIG_SMALL("IBM UltiMotion"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_ULTI,
    .priv_data_size = sizeof(UltimotionDecodeContext),
    .init           = ulti_decode_init,
    .close          = ulti_decode_end,
    .decode         = ulti_decode_frame,
    .capabilities   = CODEC_CAP_DR1,
}

Definition at line 418 of file ulti.c.