libavcodec/fraps.c File Reference

Lossless Fraps 'FPS1' decoder. More...

#include "avcodec.h"
#include "bitstream.h"
#include "huffman.h"
#include "bytestream.h"
#include "dsputil.h"

Go to the source code of this file.

Data Structures
struct	FrapsContext
	local variable storage More...
Defines
#define	FPS_TAG   MKTAG('F', 'P', 'S', 'x')
Functions
static av_cold int	decode_init (AVCodecContext *avctx)
	initializes decoder
static int	huff_cmp (const void *va, const void *vb)
	Comparator - our nodes should ascend by count but with preserved symbol order.
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
static int	decode_frame (AVCodecContext *avctx, void *data, int *data_size, const uint8_t *buf, int buf_size)
	decode a frame
static av_cold int	decode_end (AVCodecContext *avctx)
	closes decoder
Variables
AVCodec	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.

---

Define Documentation

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

Definition at line 40 of file fraps.c.

Referenced by decode_frame().

---

Function Documentation

static av_cold int decode_end

(

AVCodecContext *

avctx

)

[static]

closes decoder

Parameters:

avctx

codec context

Returns:

0 on success or negative if fails

Definition at line 354 of file fraps.c.

static int decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		const uint8_t *	buf,
		int	buf_size
	)			[static]

decode a frame

Parameters:

	avctx	codec context
	data	output AVFrame
	data_size	size of output data or 0 if no picture is returned
	buf	input data frame
	buf_size	size of input data frame

Returns:

number of consumed bytes on success or negative if decode fails

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

Definition at line 131 of file fraps.c.

static av_cold int decode_init

(

AVCodecContext *

avctx

)

[static]

initializes decoder

Parameters:

avctx

codec context

Returns:

0 on success or negative if fails

Definition at line 58 of file fraps.c.

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 huff_cmp	(	const void *	va,
		const void *	vb
	)			[static]

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

Definition at line 78 of file fraps.c.

Referenced by fraps2_decode_plane().

---

Variable Documentation

AVCodec fraps_decoder

Initial value:

 {
    "fraps",
    CODEC_TYPE_VIDEO,
    CODEC_ID_FRAPS,
    sizeof(FrapsContext),
    decode_init,
    NULL,
    decode_end,
    decode_frame,
    CODEC_CAP_DR1,
    .long_name = NULL_IF_CONFIG_SMALL("Fraps"),
}

Definition at line 366 of file fraps.c.