av1dec.c File Reference

#include "config_components.h"
#include "libavutil/attributes.h"
#include "libavutil/hdr_dynamic_metadata.h"
#include "libavutil/film_grain_params.h"
#include "libavutil/mastering_display_metadata.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "av1_parse.h"
#include "av1dec.h"
#include "atsc_a53.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "hwaccel_internal.h"
#include "internal.h"
#include "itut35.h"
#include "hwconfig.h"
#include "profiles.h"
#include "progressframe.h"
#include "libavutil/refstruct.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	order_hint_info (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 enum AVPixelFormat	get_sw_pixel_format (void *logctx, const AV1RawSequenceHeader *seq)
static int	get_pixel_format (AVCodecContext *avctx)
static void	av1_frame_unref (AV1Frame *f)
static void	av1_frame_replace (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_itut_t35 (AVCodecContext *avctx, AVFrame *frame, const AV1RawMetadataITUTT35 *itut_t35)
static int	export_metadata (AVCodecContext *avctx, AVFrame *frame)
static int	export_film_grain (AVCodecContext *avctx, AVFrame *frame)
static int	set_output_frame (AVCodecContext *avctx, AVFrame *frame)
static void	update_reference_list (AVCodecContext *avctx)
static int	get_current_frame (AVCodecContext *avctx)
static int	av1_receive_frame_internal (AVCodecContext *avctx, AVFrame *frame)
static int	av1_receive_frame (AVCodecContext *avctx, AVFrame *frame)
static av_cold 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 CodedBitstreamUnitType	decompose_unit_types []
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_D3D12VA_HWACCEL + \
                     CONFIG_AV1_NVDEC_HWACCEL + \
                     CONFIG_AV1_VAAPI_HWACCEL + \
                     CONFIG_AV1_VDPAU_HWACCEL + \
                     CONFIG_AV1_VIDEOTOOLBOX_HWACCEL + \
                     CONFIG_AV1_VULKAN_HWACCEL)

OFFSET

#define OFFSET

(

x

)

offsetof(AV1DecContext, x)

Definition at line 1614 of file av1dec.c.

VD

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 1615 of file av1dec.c.

Function Documentation

inverse_recenter()

static uint32_t inverse_recenter ( int  r, uint32_t  v  )

static

Definition at line 73 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 83 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 93 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 100 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 143 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 150 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 159 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 179 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 211 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 260 of file av1dec.c.

Referenced by order_hint_info(), and skip_mode_params().

skip_mode_params()

static void skip_mode_params ( AV1DecContext *  s )

static

Definition at line 268 of file av1dec.c.

Referenced by get_current_frame().

coded_lossless_param()

static void coded_lossless_param ( AV1DecContext *  s )

static

Definition at line 336 of file av1dec.c.

Referenced by get_current_frame().

order_hint_info()

static void order_hint_info ( AV1DecContext *  s )

static

Definition at line 366 of file av1dec.c.

Referenced by get_current_frame().

load_grain_params()

static void load_grain_params ( AV1DecContext *  s )

static

Definition at line 390 of file av1dec.c.

Referenced by get_current_frame().

init_tile_data()

static int init_tile_data ( AV1DecContext *  s )

static

Definition at line 410 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 428 of file av1dec.c.

Referenced by av1_receive_frame_internal().

get_sw_pixel_format()

static enum AVPixelFormat get_sw_pixel_format ( void *  logctx, const AV1RawSequenceHeader *  seq  )

static

Definition at line 473 of file av1dec.c.

Referenced by get_pixel_format(), and set_context_with_sequence().

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 536 of file av1dec.c.

Referenced by get_current_frame().

av1_frame_unref()

static void av1_frame_unref ( AV1Frame *  f )

static

Definition at line 689 of file av1dec.c.

Referenced by av1_decode_flush(), av1_decode_free(), av1_frame_alloc(), and get_current_frame().

av1_frame_replace()

static void av1_frame_replace ( AV1Frame *  dst, const AV1Frame *  src  )

static

Definition at line 702 of file av1dec.c.

Referenced by av1_receive_frame_internal(), and update_reference_list().

av1_decode_free()

static av_cold int av1_decode_free ( AVCodecContext *  avctx )

static

Definition at line 743 of file av1dec.c.

set_context_with_sequence()

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

static

Definition at line 769 of file av1dec.c.

Referenced by av1_decode_init(), and av1_receive_frame_internal().

update_context_with_frame_header()

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

static

Definition at line 821 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 861 of file av1dec.c.

av1_frame_alloc()

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

static

Definition at line 921 of file av1dec.c.

Referenced by get_current_frame().

export_itut_t35()

static int export_itut_t35 ( AVCodecContext *  avctx, AVFrame *  frame, const AV1RawMetadataITUTT35 *  itut_t35  )

static

Definition at line 968 of file av1dec.c.

Referenced by export_metadata().

export_metadata()

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

static

Definition at line 1082 of file av1dec.c.

Referenced by set_output_frame().

export_film_grain()

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

static

Definition at line 1133 of file av1dec.c.

Referenced by set_output_frame().

set_output_frame()

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

static

Definition at line 1203 of file av1dec.c.

Referenced by av1_receive_frame_internal().

update_reference_list()

static void update_reference_list ( AVCodecContext *  avctx )

static

Definition at line 1241 of file av1dec.c.

Referenced by av1_receive_frame_internal().

get_current_frame()

static int get_current_frame ( AVCodecContext *  avctx )

static

Definition at line 1252 of file av1dec.c.

Referenced by av1_receive_frame_internal().

av1_receive_frame_internal()

static int av1_receive_frame_internal ( AVCodecContext *  avctx, AVFrame *  frame  )

static

Definition at line 1315 of file av1dec.c.

Referenced by av1_receive_frame().

av1_receive_frame()

static int av1_receive_frame ( AVCodecContext *  avctx, AVFrame *  frame  )

static

Definition at line 1559 of file av1dec.c.

av1_decode_flush()

static av_cold void av1_decode_flush ( AVCodecContext *  avctx )

static

Definition at line 1589 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 46 of file av1dec.c.

Referenced by resolve_divisor().

decompose_unit_types

const CodedBitstreamUnitType decompose_unit_types[]

static

Initial value:

= {
    AV1_OBU_FRAME,
    AV1_OBU_FRAME_HEADER,
    AV1_OBU_METADATA,
    AV1_OBU_REDUNDANT_FRAME_HEADER,
    AV1_OBU_SEQUENCE_HEADER,
    AV1_OBU_TEMPORAL_DELIMITER,
    AV1_OBU_TILE_GROUP,
}

Definition at line 851 of file av1dec.c.

Referenced by av1_decode_init().

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 1616 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 1622 of file av1dec.c.

ff_av1_decoder

const FFCodec ff_av1_decoder

Definition at line 1629 of file av1dec.c.