av1dec.c File Reference

#include "config_components.h"
#include "libavutil/film_grain_params.h"
#include "libavutil/pixdesc.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "av1dec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "hwconfig.h"
#include "profiles.h"
#include "thread.h"

Go to the source code of this file.

Macros
#define	HWACCEL_MAX
#define	OFFSET(x)   offsetof(AV1DecContext, x)
#define	VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Functions
static uint32_t	inverse_recenter (int r, uint32_t v)
static uint32_t	decode_unsigned_subexp_with_ref (uint32_t sub_exp, int mx, int r)
static int32_t	decode_signed_subexp_with_ref (uint32_t sub_exp, int low, int high, int r)
static void	read_global_param (AV1DecContext *s, int type, int ref, int idx)
static uint64_t	round_two (uint64_t x, uint16_t n)
static int64_t	round_two_signed (int64_t x, uint16_t n)
static int16_t	resolve_divisor (uint32_t d, uint16_t *shift)
	Resolve divisor process. More...
static uint8_t	get_shear_params_valid (AV1DecContext *s, int idx)
	check if global motion params is valid. More...
static void	global_motion_params (AV1DecContext *s)
	update gm type/params, since cbs already implemented part of this function, so we don't need to full implement spec. More...
static int	get_relative_dist (const AV1RawSequenceHeader *seq, unsigned int a, unsigned int b)
static void	skip_mode_params (AV1DecContext *s)
static void	coded_lossless_param (AV1DecContext *s)
static void	load_grain_params (AV1DecContext *s)
static int	init_tile_data (AV1DecContext *s)
static int	get_tiles_info (AVCodecContext *avctx, const AV1RawTileGroup *tile_group)
static int	get_pixel_format (AVCodecContext *avctx)
static void	av1_frame_unref (AVCodecContext *avctx, AV1Frame *f)
static int	av1_frame_ref (AVCodecContext *avctx, AV1Frame *dst, const AV1Frame *src)
static av_cold int	av1_decode_free (AVCodecContext *avctx)
static int	set_context_with_sequence (AVCodecContext *avctx, const AV1RawSequenceHeader *seq)
static int	update_context_with_frame_header (AVCodecContext *avctx, const AV1RawFrameHeader *header)
static av_cold int	av1_decode_init (AVCodecContext *avctx)
static int	av1_frame_alloc (AVCodecContext *avctx, AV1Frame *f)
static int	export_film_grain (AVCodecContext *avctx, AVFrame *frame)
static int	set_output_frame (AVCodecContext *avctx, AVFrame *frame, const AVPacket *pkt, int *got_frame)
static int	update_reference_list (AVCodecContext *avctx)
static int	get_current_frame (AVCodecContext *avctx)
static int	av1_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
static void	av1_decode_flush (AVCodecContext *avctx)

Variables
static const uint16_t	div_lut [AV1_DIV_LUT_NUM]
	< same with Div_Lut defined in spec 7.11.3.7 More...
static const AVOption	av1_options []
static const AVClass	av1_class
const FFCodec	ff_av1_decoder

Macro Definition Documentation

HWACCEL_MAX

#define HWACCEL_MAX

Value:

                     (CONFIG_AV1_DXVA2_HWACCEL + \
                     CONFIG_AV1_D3D11VA_HWACCEL * 2 + \
                     CONFIG_AV1_NVDEC_HWACCEL + \
                     CONFIG_AV1_VAAPI_HWACCEL + \
                     CONFIG_AV1_VDPAU_HWACCEL)

OFFSET

#define OFFSET

(

x

)

offsetof(AV1DecContext, x)

Definition at line 1233 of file av1dec.c.

VD

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 1234 of file av1dec.c.

Function Documentation

inverse_recenter()

static uint32_t inverse_recenter ( int  r, uint32_t  v  )

static

Definition at line 63 of file av1dec.c.

Referenced by decode_unsigned_subexp_with_ref().

decode_unsigned_subexp_with_ref()

static uint32_t decode_unsigned_subexp_with_ref ( uint32_t  sub_exp, int  mx, int  r  )

static

Definition at line 73 of file av1dec.c.

Referenced by decode_signed_subexp_with_ref().

decode_signed_subexp_with_ref()

static int32_t decode_signed_subexp_with_ref ( uint32_t  sub_exp, int  low, int  high, int  r  )

static

Definition at line 83 of file av1dec.c.

Referenced by read_global_param().

read_global_param()

static void read_global_param ( AV1DecContext *  s, int  type, int  ref, int  idx  )

static

Definition at line 90 of file av1dec.c.

Referenced by global_motion_params().

round_two()

static uint64_t round_two ( uint64_t  x, uint16_t  n  )

static

Definition at line 132 of file av1dec.c.

Referenced by resolve_divisor(), and round_two_signed().

round_two_signed()

static int64_t round_two_signed ( int64_t  x, uint16_t  n  )

static

Definition at line 139 of file av1dec.c.

Referenced by get_shear_params_valid().

resolve_divisor()

static int16_t resolve_divisor ( uint32_t  d, uint16_t *  shift  )

static

Resolve divisor process.

see spec 7.11.3.7

Definition at line 148 of file av1dec.c.

Referenced by get_shear_params_valid().

get_shear_params_valid()

static uint8_t get_shear_params_valid ( AV1DecContext *  s, int  idx  )

static

check if global motion params is valid.

see spec 7.11.3.6

Definition at line 168 of file av1dec.c.

Referenced by global_motion_params().

global_motion_params()

static void global_motion_params ( AV1DecContext *  s )

static

update gm type/params, since cbs already implemented part of this function, so we don't need to full implement spec.

Definition at line 200 of file av1dec.c.

Referenced by get_current_frame().

get_relative_dist()

static int get_relative_dist ( const AV1RawSequenceHeader *  seq, unsigned int  a, unsigned int  b  )

static

Definition at line 249 of file av1dec.c.

Referenced by skip_mode_params().

skip_mode_params()

static void skip_mode_params ( AV1DecContext *  s )

static

Definition at line 257 of file av1dec.c.

Referenced by get_current_frame().

coded_lossless_param()

static void coded_lossless_param ( AV1DecContext *  s )

static

Definition at line 321 of file av1dec.c.

Referenced by get_current_frame().

load_grain_params()

static void load_grain_params ( AV1DecContext *  s )

static

Definition at line 351 of file av1dec.c.

Referenced by get_current_frame().

init_tile_data()

static int init_tile_data ( AV1DecContext *  s )

static

Definition at line 371 of file av1dec.c.

Referenced by get_current_frame().

get_tiles_info()

static int get_tiles_info ( AVCodecContext *  avctx, const AV1RawTileGroup *  tile_group  )

static

Definition at line 389 of file av1dec.c.

Referenced by av1_decode_frame().

get_pixel_format()

static int get_pixel_format ( AVCodecContext *  avctx )

static

check if the HW accel is inited correctly. If not, return un-implemented. Since now the av1 decoder doesn't support native decode, if it will be implemented in the future, need remove this check.

Definition at line 434 of file av1dec.c.

Referenced by av1_decode_frame().

av1_frame_unref()

static void av1_frame_unref ( AVCodecContext *  avctx, AV1Frame *  f  )

static

Definition at line 581 of file av1dec.c.

Referenced by av1_decode_flush(), av1_decode_frame(), av1_decode_free(), av1_frame_alloc(), av1_frame_ref(), get_current_frame(), and update_reference_list().

av1_frame_ref()

static int av1_frame_ref ( AVCodecContext *  avctx, AV1Frame *  dst, const AV1Frame *  src  )

static

Definition at line 595 of file av1dec.c.

Referenced by av1_decode_frame(), and update_reference_list().

av1_decode_free()

static av_cold int av1_decode_free ( AVCodecContext *  avctx )

static

Definition at line 645 of file av1dec.c.

set_context_with_sequence()

static int set_context_with_sequence ( AVCodecContext *  avctx, const AV1RawSequenceHeader *  seq  )

static

Definition at line 666 of file av1dec.c.

Referenced by av1_decode_frame(), and av1_decode_init().

update_context_with_frame_header()

static int update_context_with_frame_header ( AVCodecContext *  avctx, const AV1RawFrameHeader *  header  )

static

Definition at line 715 of file av1dec.c.

Referenced by av1_frame_alloc().

av1_decode_init()

static av_cold int av1_decode_init ( AVCodecContext *  avctx )

static

Definition at line 745 of file av1dec.c.

av1_frame_alloc()

static int av1_frame_alloc ( AVCodecContext *  avctx, AV1Frame *  f  )

static

Definition at line 804 of file av1dec.c.

Referenced by get_current_frame().

export_film_grain()

static int export_film_grain ( AVCodecContext *  avctx, AVFrame *  frame  )

static

Definition at line 855 of file av1dec.c.

Referenced by set_output_frame().

set_output_frame()

static int set_output_frame ( AVCodecContext *  avctx, AVFrame *  frame, const AVPacket *  pkt, int *  got_frame  )

static

Definition at line 915 of file av1dec.c.

Referenced by av1_decode_frame().

update_reference_list()

static int update_reference_list ( AVCodecContext *  avctx )

static

Definition at line 948 of file av1dec.c.

Referenced by av1_decode_frame().

get_current_frame()

static int get_current_frame ( AVCodecContext *  avctx )

static

Definition at line 967 of file av1dec.c.

Referenced by av1_decode_frame().

av1_decode_frame()

static int av1_decode_frame ( AVCodecContext *  avctx, AVFrame *  frame, int *  got_frame, AVPacket *  pkt  )

static

Definition at line 1009 of file av1dec.c.

av1_decode_flush()

static void av1_decode_flush ( AVCodecContext *  avctx )

static

Definition at line 1218 of file av1dec.c.

Variable Documentation

div_lut

const uint16_t div_lut[AV1_DIV_LUT_NUM]

static

Initial value:

= {
  16384, 16320, 16257, 16194, 16132, 16070, 16009, 15948, 15888, 15828, 15768,
  15709, 15650, 15592, 15534, 15477, 15420, 15364, 15308, 15252, 15197, 15142,
  15087, 15033, 14980, 14926, 14873, 14821, 14769, 14717, 14665, 14614, 14564,
  14513, 14463, 14413, 14364, 14315, 14266, 14218, 14170, 14122, 14075, 14028,
  13981, 13935, 13888, 13843, 13797, 13752, 13707, 13662, 13618, 13574, 13530,
  13487, 13443, 13400, 13358, 13315, 13273, 13231, 13190, 13148, 13107, 13066,
  13026, 12985, 12945, 12906, 12866, 12827, 12788, 12749, 12710, 12672, 12633,
  12596, 12558, 12520, 12483, 12446, 12409, 12373, 12336, 12300, 12264, 12228,
  12193, 12157, 12122, 12087, 12053, 12018, 11984, 11950, 11916, 11882, 11848,
  11815, 11782, 11749, 11716, 11683, 11651, 11619, 11586, 11555, 11523, 11491,
  11460, 11429, 11398, 11367, 11336, 11305, 11275, 11245, 11215, 11185, 11155,
  11125, 11096, 11067, 11038, 11009, 10980, 10951, 10923, 10894, 10866, 10838,
  10810, 10782, 10755, 10727, 10700, 10673, 10645, 10618, 10592, 10565, 10538,
  10512, 10486, 10460, 10434, 10408, 10382, 10356, 10331, 10305, 10280, 10255,
  10230, 10205, 10180, 10156, 10131, 10107, 10082, 10058, 10034, 10010, 9986,
  9963,  9939,  9916,  9892,  9869,  9846,  9823,  9800,  9777,  9754,  9732,
  9709,  9687,  9664,  9642,  9620,  9598,  9576,  9554,  9533,  9511,  9489,
  9468,  9447,  9425,  9404,  9383,  9362,  9341,  9321,  9300,  9279,  9259,
  9239,  9218,  9198,  9178,  9158,  9138,  9118,  9098,  9079,  9059,  9039,
  9020,  9001,  8981,  8962,  8943,  8924,  8905,  8886,  8867,  8849,  8830,
  8812,  8793,  8775,  8756,  8738,  8720,  8702,  8684,  8666,  8648,  8630,
  8613,  8595,  8577,  8560,  8542,  8525,  8508,  8490,  8473,  8456,  8439,
  8422,  8405,  8389,  8372,  8355,  8339,  8322,  8306,  8289,  8273,  8257,
  8240,  8224,  8208,  8192
}

< same with Div_Lut defined in spec 7.11.3.7

Definition at line 36 of file av1dec.c.

Referenced by resolve_divisor().

av1_options

const AVOption av1_options[]

static

Initial value:

= {
    { "operating_point",  "Select an operating point of the scalable bitstream",
                          OFFSET(operating_point), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, AV1_MAX_OPERATING_POINTS - 1, VD },
    { NULL }
}

Definition at line 1235 of file av1dec.c.

av1_class

const AVClass av1_class

static

Initial value:

= {
    .class_name = "AV1 decoder",
    .item_name  = av_default_item_name,
    .option     = av1_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1241 of file av1dec.c.

ff_av1_decoder

const FFCodec ff_av1_decoder

Definition at line 1248 of file av1dec.c.