FFmpeg
Data Structures | Macros | Functions | Variables
dxa.c File Reference
#include <stdio.h>
#include <stdlib.h>
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "bytestream.h"
#include "avcodec.h"
#include "internal.h"
#include <zlib.h>

Go to the source code of this file.

Data Structures

struct  DxaDecContext
 

Macros

#define DECOMP_BUF_PADDING   16
 

Functions

static int decode_13 (AVCodecContext *avctx, DxaDecContext *c, uint8_t *dst, int stride, uint8_t *src, int srcsize, uint8_t *ref)
 
static int decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 
static av_cold int decode_init (AVCodecContext *avctx)
 
static av_cold int decode_end (AVCodecContext *avctx)
 

Variables

static const int shift1 [6] = { 0, 8, 8, 8, 4, 4 }
 
static const int shift2 [6] = { 0, 0, 8, 4, 0, 4 }
 
const AVCodec ff_dxa_decoder
 

Detailed Description

DXA Video decoder

Definition in file dxa.c.

Macro Definition Documentation

◆ DECOMP_BUF_PADDING

#define DECOMP_BUF_PADDING   16

Definition at line 45 of file dxa.c.

Function Documentation

◆ decode_13()

static int decode_13 ( AVCodecContext avctx,
DxaDecContext c,
uint8_t *  dst,
int  stride,
uint8_t *  src,
int  srcsize,
uint8_t *  ref 
)
static

Definition at line 53 of file dxa.c.

Referenced by decode_frame().

◆ decode_frame()

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

Definition at line 210 of file dxa.c.

◆ decode_init()

static av_cold int decode_init ( AVCodecContext avctx)
static

Definition at line 328 of file dxa.c.

◆ decode_end()

static av_cold int decode_end ( AVCodecContext avctx)
static

Definition at line 353 of file dxa.c.

Variable Documentation

◆ shift1

const int shift1[6] = { 0, 8, 8, 8, 4, 4 }
static

Definition at line 50 of file dxa.c.

Referenced by decode_13(), dnxhd_decode_macroblock(), do_plc(), and fixed_sqrt().

◆ shift2

const int shift2[6] = { 0, 0, 8, 4, 0, 4 }
static

◆ ff_dxa_decoder

const AVCodec ff_dxa_decoder
Initial value:
= {
.name = "dxa",
.long_name = NULL_IF_CONFIG_SMALL("Feeble Files/ScummVM DXA"),
.priv_data_size = sizeof(DxaDecContext),
.close = decode_end,
.capabilities = AV_CODEC_CAP_DR1,
}

Definition at line 363 of file dxa.c.

FF_CODEC_CAP_INIT_THREADSAFE
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:41
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
decode_end
static av_cold int decode_end(AVCodecContext *avctx)
Definition: dxa.c:353
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AV_CODEC_ID_DXA
@ AV_CODEC_ID_DXA
Definition: codec_id.h:147
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:49
decode_frame
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dxa.c:210
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
DxaDecContext
Definition: dxa.c:41
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: dxa.c:328