ffv1dec.c File Reference

FF Video Codec 1 (a lossless codec) decoder. More...

#include "libavutil/avassert.h"
#include "libavutil/crc.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/timer.h"
#include "avcodec.h"
#include "internal.h"
#include "get_bits.h"
#include "rangecoder.h"
#include "golomb.h"
#include "mathops.h"
#include "ffv1.h"

Go to the source code of this file.

Functions
static av_flatten int	get_symbol_inline (RangeCoder *c, uint8_t *state, int is_signed)
static av_noinline int	get_symbol (RangeCoder *c, uint8_t *state, int is_signed)
static int	get_vlc_symbol (GetBitContext *gb, VlcState *const state, int bits)
static av_always_inline void	decode_line (FFV1Context *s, int w, int16_t *sample[2], int plane_index, int bits)
static void	decode_plane (FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index)
static void	decode_rgb_frame (FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
static int	decode_slice_header (FFV1Context *f, FFV1Context *fs)
static int	decode_slice (AVCodecContext *c, void *arg)
static int	read_quant_table (RangeCoder *c, int16_t *quant_table, int scale)
static int	read_quant_tables (RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
static int	read_extra_header (FFV1Context *f)
static int	read_header (FFV1Context *f)
static av_cold int	decode_init (AVCodecContext *avctx)
static int	decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static int	init_thread_copy (AVCodecContext *avctx)
static void	copy_fields (FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
static int	update_thread_context (AVCodecContext *dst, const AVCodecContext *src)

Variables
AVCodec	ff_ffv1_decoder

Detailed Description

FF Video Codec 1 (a lossless codec) decoder.

Definition in file ffv1dec.c.

Function Documentation

static av_flatten int get_symbol_inline ( RangeCoder *  c, uint8_t *  state, int  is_signed  )

inlinestatic

Definition at line 42 of file ffv1dec.c.

Referenced by decode_line(), and get_symbol().

static av_noinline int get_symbol ( RangeCoder *  c, uint8_t *  state, int  is_signed  )

static

Definition at line 62 of file ffv1dec.c.

Referenced by decode_header(), decode_q_branch(), decode_qlogs(), decode_slice_header(), read_extra_header(), read_header(), and read_quant_table().

static int get_vlc_symbol ( GetBitContext *  gb, VlcState *const  state, int  bits  )

inlinestatic

Definition at line 67 of file ffv1dec.c.

Referenced by decode_line().

static av_always_inline void decode_line ( FFV1Context *  s, int  w, int16_t *  sample[2], int  plane_index, int  bits  )

static

Definition at line 97 of file ffv1dec.c.

Referenced by decode_plane(), and decode_rgb_frame().

static void decode_plane ( FFV1Context *  s, uint8_t *  src, int  w, int  h, int  stride, int  plane_index  )

static

Definition at line 181 of file ffv1dec.c.

static void decode_rgb_frame ( FFV1Context *  s, uint8_t *  src[3], int  w, int  h, int  stride[3]  )

static

Definition at line 223 of file ffv1dec.c.

static int decode_slice_header ( FFV1Context *  f, FFV1Context *  fs  )

static

Definition at line 279 of file ffv1dec.c.

Referenced by decode_slice().

static int decode_slice ( AVCodecContext *  c, void *  arg  )

static

Definition at line 348 of file ffv1dec.c.

Referenced by decode_frame().

static int read_quant_table ( RangeCoder *  c, int16_t *  quant_table, int  scale  )

static

Definition at line 459 of file ffv1dec.c.

Referenced by read_quant_tables().

static int read_quant_tables ( RangeCoder *  c, int16_t  quant_table[MAX_CONTEXT_INPUTS][256]  )

static

Definition at line 486 of file ffv1dec.c.

Referenced by read_extra_header(), and read_header().

static int read_extra_header ( FFV1Context *  f )

static

Definition at line 501 of file ffv1dec.c.

Referenced by decode_init().

static int read_header ( FFV1Context *  f )

static

Definition at line 603 of file ffv1dec.c.

Referenced by decode_frame(), and mjpegb_decode_frame().

static av_cold int decode_init ( AVCodecContext *  avctx )

static

Definition at line 826 of file ffv1dec.c.

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

static

Definition at line 845 of file ffv1dec.c.

static int init_thread_copy ( AVCodecContext *  avctx )

static

Definition at line 981 of file ffv1dec.c.

static void copy_fields ( FFV1Context *  fsdst, FFV1Context *  fssrc, FFV1Context *  fsrc  )

static

Definition at line 1006 of file ffv1dec.c.

Referenced by update_thread_context().

static int update_thread_context ( AVCodecContext *  dst, const AVCodecContext *  src  )

static

Definition at line 1034 of file ffv1dec.c.

Variable Documentation

AVCodec ff_ffv1_decoder

Initial value:

= {
    .name           = "ffv1",
    .long_name      = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_FFV1,
    .priv_data_size = sizeof(FFV1Context),
    .init           = decode_init,
    .close          = ffv1_close,
    .decode         = decode_frame,
    .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
    .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
    .capabilities   = CODEC_CAP_DR1  |
                      CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS,
}

Definition at line 1073 of file ffv1dec.c.