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interplayvideo.c File Reference

Interplay MVE Video Decoder by Mike Melanson (melan.nosp@m.son@.nosp@m.pcisy.nosp@m.s.ne.nosp@m.t) For more information about the Interplay MVE format, visit: http://www.pcisys.net/~melanson/codecs/interplay-mve.txt This code is written in such a way that the identifiers match up with the encoding descriptions in the document. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bytestream.h"
#include "hpeldsp.h"
#include "get_bits.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  IpvideoContext

Macros

#define BITSTREAM_READER_LE
#define PALETTE_COUNT   256

Functions

static int copy_from (IpvideoContext *s, AVFrame *src, AVFrame *dst, int delta_x, int delta_y)
static int ipvideo_decode_block_opcode_0x0 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x1 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x2 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x3 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x4 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x5 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x6 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x7 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x8 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x9 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xA (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xB (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xC (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xD (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xE (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xF (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x6_16 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x7_16 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x8_16 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0x9_16 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xA_16 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xB_16 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xC_16 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xD_16 (IpvideoContext *s, AVFrame *frame)
static int ipvideo_decode_block_opcode_0xE_16 (IpvideoContext *s, AVFrame *frame)
static void ipvideo_decode_opcodes (IpvideoContext *s, AVFrame *frame)
static av_cold int ipvideo_decode_init (AVCodecContext *avctx)
static int ipvideo_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int ipvideo_decode_end (AVCodecContext *avctx)

Variables

static int(*const ipvideo_decode_block [])(IpvideoContext *s, AVFrame *frame)
static int(*const ipvideo_decode_block16 [])(IpvideoContext *s, AVFrame *frame)
AVCodec ff_interplay_video_decoder

Detailed Description

Interplay MVE Video Decoder by Mike Melanson (melan.nosp@m.son@.nosp@m.pcisy.nosp@m.s.ne.nosp@m.t) For more information about the Interplay MVE format, visit: http://www.pcisys.net/~melanson/codecs/interplay-mve.txt This code is written in such a way that the identifiers match up with the encoding descriptions in the document.

This decoder presently only supports a PAL8 output colorspace.

An Interplay video frame consists of 2 parts: The decoding map and the video data. A demuxer must load these 2 parts together in a single buffer before sending it through the stream to this decoder.

Definition in file interplayvideo.c.

Macro Definition Documentation

#define BITSTREAM_READER_LE

Definition at line 45 of file interplayvideo.c.

#define PALETTE_COUNT   256

Definition at line 49 of file interplayvideo.c.

Function Documentation

static int copy_from ( IpvideoContext s,
AVFrame src,
AVFrame dst,
int  delta_x,
int  delta_y 
)
static
static int ipvideo_decode_block_opcode_0x0 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 92 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x1 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 97 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x2 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 102 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x3 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 126 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x4 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 152 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x5 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 173 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x6 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 186 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x7 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 195 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x8 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 239 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x9 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 317 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xA ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 387 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xB ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 453 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xC ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 467 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xD ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 486 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xE ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 511 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xF ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 528 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x6_16 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 549 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x7_16 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 561 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x8_16 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 598 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0x9_16 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 674 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xA_16 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 741 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xB_16 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 807 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xC_16 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 823 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xD_16 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 843 of file interplayvideo.c.

static int ipvideo_decode_block_opcode_0xE_16 ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 864 of file interplayvideo.c.

static void ipvideo_decode_opcodes ( IpvideoContext s,
AVFrame frame 
)
static

Definition at line 905 of file interplayvideo.c.

Referenced by ipvideo_decode_frame().

static av_cold int ipvideo_decode_init ( AVCodecContext avctx)
static

Definition at line 959 of file interplayvideo.c.

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

Definition at line 981 of file interplayvideo.c.

static av_cold int ipvideo_decode_end ( AVCodecContext avctx)
static

Definition at line 1036 of file interplayvideo.c.

Variable Documentation

int(* const ipvideo_decode_block[])(IpvideoContext *s, AVFrame *frame)
static
int(* const ipvideo_decode_block16[])(IpvideoContext *s, AVFrame *frame)
static
AVCodec ff_interplay_video_decoder
Initial value:
{
.name = "interplayvideo",
.long_name = NULL_IF_CONFIG_SMALL("Interplay MVE video"),
.priv_data_size = sizeof(IpvideoContext),
}

Definition at line 1046 of file interplayvideo.c.