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fraps.c File Reference

Lossless Fraps 'FPS1' decoder. More...

#include "avcodec.h"
#include "get_bits.h"
#include "huffman.h"
#include "bytestream.h"
#include "bswapdsp.h"
#include "internal.h"
#include "thread.h"

Go to the source code of this file.

Data Structures

struct  FrapsContext
 local variable storage More...
 

Macros

#define FPS_TAG   MKTAG('F', 'P', 'S', 'x')
 
#define VLC_BITS   11
 

Functions

static av_cold int decode_init (AVCodecContext *avctx)
 initializes decoder More...
 
static int huff_cmp (const void *va, const void *vb)
 Comparator - our nodes should ascend by count but with preserved symbol order. More...
 
static int fraps2_decode_plane (FrapsContext *s, uint8_t *dst, int stride, int w, int h, const uint8_t *src, int size, int Uoff, const int step)
 decode Fraps v2 packed plane More...
 
static int decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 
static av_cold int decode_end (AVCodecContext *avctx)
 closes decoder More...
 

Variables

AVCodec ff_fraps_decoder
 

Detailed Description

Lossless Fraps 'FPS1' decoder.

Author
Roine Gustafsson (roine at users sf net)
Konstantin Shishkov

Codec algorithm for version 0 is taken from Transcode <www.transcoding.org>

Version 2 files support by Konstantin Shishkov

Definition in file fraps.c.

Macro Definition Documentation

#define FPS_TAG   MKTAG('F', 'P', 'S', 'x')

Definition at line 42 of file fraps.c.

Referenced by decode_frame().

#define VLC_BITS   11

Definition at line 43 of file fraps.c.

Referenced by fraps2_decode_plane().

Function Documentation

static av_cold int decode_init ( AVCodecContext avctx)
static

initializes decoder

Parameters
avctxcodec context
Returns
0 on success or negative if fails

Definition at line 61 of file fraps.c.

static int huff_cmp ( const void va,
const void vb 
)
static

Comparator - our nodes should ascend by count but with preserved symbol order.

Definition at line 77 of file fraps.c.

Referenced by fraps2_decode_plane().

static int fraps2_decode_plane ( FrapsContext s,
uint8_t dst,
int  stride,
int  w,
int  h,
const uint8_t src,
int  size,
int  Uoff,
const int  step 
)
static

decode Fraps v2 packed plane

Definition at line 86 of file fraps.c.

Referenced by decode_frame().

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

Fraps v2 is Huffman-coded YUV420 planes Fraps v4 is virtually the same

Definition at line 132 of file fraps.c.

static av_cold int decode_end ( AVCodecContext avctx)
static

closes decoder

Parameters
avctxcodec context
Returns
0 on success or negative if fails

Definition at line 309 of file fraps.c.

Variable Documentation

AVCodec ff_fraps_decoder
Initial value:
= {
.name = "fraps",
.long_name = NULL_IF_CONFIG_SMALL("Fraps"),
.priv_data_size = sizeof(FrapsContext),
.close = decode_end,
}
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
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1021
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: fraps.c:132
static av_cold int decode_end(AVCodecContext *avctx)
closes decoder
Definition: fraps.c:309
static av_cold int decode_init(AVCodecContext *avctx)
initializes decoder
Definition: fraps.c:61
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:750
local variable storage
Definition: fraps.c:48
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:958

Definition at line 318 of file fraps.c.