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Data Structures | Functions | Variables
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"),
.priv_data_size = sizeof(UltimotionDecodeContext),
.close = ulti_decode_end,
.capabilities = AV_CODEC_CAP_DR1,
}
static av_cold int ulti_decode_end(AVCodecContext *avctx)
Definition: ulti.c:63
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
static int ulti_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ulti.c:213
static av_cold int ulti_decode_init(AVCodecContext *avctx)
Definition: ulti.c:45
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:752
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:956

Definition at line 418 of file ulti.c.