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c93.c File Reference
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  C93DecoderContext
 

Macros

#define WIDTH   320
 
#define HEIGHT   192
 
#define C93_HAS_PALETTE   0x01
 
#define C93_FIRST_FRAME   0x02
 

Enumerations

enum  C93BlockType {
  C93_8X8_FROM_PREV = 0x02, C93_4X4_FROM_PREV = 0x06, C93_4X4_FROM_CURR = 0x07, C93_8X8_2COLOR = 0x08,
  C93_4X4_2COLOR = 0x0A, C93_4X4_4COLOR_GRP = 0x0B, C93_4X4_4COLOR = 0x0D, C93_NOOP = 0x0E,
  C93_8X8_INTRA = 0x0F
}
 

Functions

static av_cold int decode_end (AVCodecContext *avctx)
 
static av_cold int decode_init (AVCodecContext *avctx)
 
static int copy_block (AVCodecContext *avctx, uint8_t *to, uint8_t *from, int offset, int height, int stride)
 
static void draw_n_color (uint8_t *out, int stride, int width, int height, int bpp, uint8_t cols[4], uint8_t grps[4], uint32_t col)
 
static int decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 

Variables

AVCodec ff_c93_decoder
 

Macro Definition Documentation

#define WIDTH   320

Definition at line 43 of file c93.c.

Referenced by copy_block(), and decode_frame().

#define HEIGHT   192

Definition at line 44 of file c93.c.

Referenced by copy_block(), and decode_frame().

#define C93_HAS_PALETTE   0x01

Definition at line 46 of file c93.c.

Referenced by decode_frame().

#define C93_FIRST_FRAME   0x02

Definition at line 47 of file c93.c.

Referenced by decode_frame().

Enumeration Type Documentation

Enumerator
C93_8X8_FROM_PREV 
C93_4X4_FROM_PREV 
C93_4X4_FROM_CURR 
C93_8X8_2COLOR 
C93_4X4_2COLOR 
C93_4X4_4COLOR_GRP 
C93_4X4_4COLOR 
C93_NOOP 
C93_8X8_INTRA 

Definition at line 31 of file c93.c.

Function Documentation

static av_cold int decode_end ( AVCodecContext avctx)
static

Definition at line 49 of file c93.c.

Referenced by decode_init().

static av_cold int decode_init ( AVCodecContext avctx)
static

Definition at line 59 of file c93.c.

static int copy_block ( AVCodecContext avctx,
uint8_t to,
uint8_t from,
int  offset,
int  height,
int  stride 
)
inlinestatic

Definition at line 74 of file c93.c.

Referenced by decode_frame().

static void draw_n_color ( uint8_t out,
int  stride,
int  width,
int  height,
int  bpp,
uint8_t  cols[4],
uint8_t  grps[4],
uint32_t  col 
)
inlinestatic

Definition at line 108 of file c93.c.

Referenced by decode_frame().

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

Definition at line 124 of file c93.c.

Variable Documentation

AVCodec ff_c93_decoder
Initial value:
= {
.name = "c93",
.long_name = NULL_IF_CONFIG_SMALL("Interplay C93"),
.priv_data_size = sizeof(C93DecoderContext),
.close = decode_end,
.capabilities = AV_CODEC_CAP_DR1,
}
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static av_cold int decode_init(AVCodecContext *avctx)
Definition: c93.c:59
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: c93.c:124
static av_cold int decode_end(AVCodecContext *avctx)
Definition: c93.c:49
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
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 262 of file c93.c.