mss1.c File Reference

Microsoft Screen 1 (aka Windows Media Video V7 Screen) decoder. More...

#include "avcodec.h"
#include "internal.h"
#include "mss12.h"

Go to the source code of this file.

Data Structures
struct	MSS1Context

Functions
static void	arith_normalise (ArithCoder *c)
static int	arith_get_bits (ArithCoder *c, int bits)
static int	arith_get_number (ArithCoder *c, int mod_val)
static int	arith_get_prob (ArithCoder *c, int16_t *probs)
static void	arith_init (ArithCoder *c, GetBitContext *gb)
static int	decode_pal (MSS12Context *ctx, ArithCoder *acoder)
static int	mss1_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int	mss1_decode_init (AVCodecContext *avctx)
static av_cold int	mss1_decode_end (AVCodecContext *avctx)

Variables
AVCodec	ff_mss1_decoder

Detailed Description

Microsoft Screen 1 (aka Windows Media Video V7 Screen) decoder.

Definition in file mss1.c.

Function Documentation

static void arith_normalise ( ArithCoder *  c )

static

Definition at line 37 of file mss1.c.

Referenced by arith_get_bits(), and arith_get_number().

static int arith_get_bits ( ArithCoder *  c, int  bits  )

static

Definition at line 65 of file mss1.c.

Referenced by decode_pal().

static int arith_get_number ( ArithCoder *  c, int  mod_val  )

static

Definition at line 79 of file mss1.c.

Referenced by arith_init(), and decode_pal().

static int arith_get_prob ( ArithCoder *  c, int16_t *  probs  )

static

Definition at line 93 of file mss1.c.

static void arith_init ( ArithCoder *  c, GetBitContext *  gb  )

static

Definition at line 110 of file mss1.c.

Referenced by mss1_decode_frame().

static int decode_pal ( MSS12Context *  ctx, ArithCoder *  acoder  )

static

Definition at line 120 of file mss1.c.

Referenced by mss1_decode_frame().

static int mss1_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 139 of file mss1.c.

static av_cold int mss1_decode_init ( AVCodecContext *  avctx )

static

Definition at line 188 of file mss1.c.

static av_cold int mss1_decode_end ( AVCodecContext *  avctx )

static

Definition at line 208 of file mss1.c.

Variable Documentation

AVCodec ff_mss1_decoder

Initial value:

= {
    .name           = "mss1",
    .long_name      = NULL_IF_CONFIG_SMALL("MS Screen 1"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_MSS1,
    .priv_data_size = sizeof(MSS1Context),
    .init           = mss1_decode_init,
    .close          = mss1_decode_end,
    .decode         = mss1_decode_frame,
    .capabilities   = CODEC_CAP_DR1,
}

Definition at line 218 of file mss1.c.