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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
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 180 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 222 of file ffv1dec.c.

static int decode_slice_header ( FFV1Context f,
FFV1Context fs 
)
static

Definition at line 278 of file ffv1dec.c.

Referenced by decode_slice().

static int decode_slice ( AVCodecContext c,
void arg 
)
static

Definition at line 357 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 468 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 495 of file ffv1dec.c.

Referenced by read_extra_header(), and read_header().

static int read_extra_header ( FFV1Context f)
static

Definition at line 510 of file ffv1dec.c.

Referenced by decode_init().

static int read_header ( FFV1Context f)
static

Definition at line 620 of file ffv1dec.c.

Referenced by decode_frame(), and mjpegb_decode_frame().

static av_cold int decode_init ( AVCodecContext avctx)
static

Definition at line 850 of file ffv1dec.c.

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

Definition at line 869 of file ffv1dec.c.

static int init_thread_copy ( AVCodecContext avctx)
static

Definition at line 1005 of file ffv1dec.c.

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

Definition at line 1030 of file ffv1dec.c.

Referenced by update_thread_context().

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

Definition at line 1058 of file ffv1dec.c.

Variable Documentation

AVCodec ff_ffv1_decoder
Initial value:
= {
.name = "ffv1",
.long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
.priv_data_size = sizeof(FFV1Context),
.close = ff_ffv1_close,
.capabilities = AV_CODEC_CAP_DR1 |
}
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:869
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:200
static int init_thread_copy(AVCodecContext *avctx)
Definition: ffv1dec.c:1005
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:919
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:214
static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: ffv1dec.c:1058
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:923
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:523
static av_cold int decode_init(AVCodecContext *avctx)
Definition: ffv1dec.c:850
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:856

Definition at line 1102 of file ffv1dec.c.