FFmpeg: Mpeg4DecContext Struct Reference

FFmpeg 4.0

#include <libavcodec/mpeg4video.h>

Data Fields
MpegEncContext	m

int	time_increment_bits
	number of bits to represent the fractional part of time More...

int	shape

int	vol_sprite_usage

int	sprite_brightness_change

int	num_sprite_warping_points

uint16_t	sprite_traj [4][2]
	sprite trajectory points More...

int	sprite_shift [2]
	sprite shift [isChroma] More...

int	rvlc

int	resync_marker
	could this stream contain resync markers More...

int	t_frame
	time distance of first I -> B, used for interlaced B-frames More...

int	new_pred

int	enhancement_type

int	scalability

int	use_intra_dc_vlc

int	intra_dc_threshold
	QP above which the ac VLC should be used for intra dc. More...

int	divx_version

int	divx_build

int	xvid_build

int	lavc_build

int	showed_packed_warning
	flag for having shown the warning about invalid Divx B-frames More...

int	vol_control_parameters
	does the stream contain the low_delay flag, used to work around buggy encoders. More...

int	cplx_estimation_trash_i

int	cplx_estimation_trash_p

int	cplx_estimation_trash_b

VLC	studio_intra_tab [12]

VLC	studio_luma_dc

VLC	studio_chroma_dc

int	rgb

Detailed Description

Definition at line 72 of file mpeg4video.h.

Field Documentation

◆ m

◆ time_increment_bits

int Mpeg4DecContext::time_increment_bits

number of bits to represent the fractional part of time

Definition at line 76 of file mpeg4video.h.

Referenced by decode_init(), decode_new_pred(), decode_vol_header(), decode_vop_header(), ff_mpeg4_decode_video_packet_header(), and nvdec_mpeg4_start_frame().

◆ shape

int Mpeg4DecContext::shape

Definition at line 77 of file mpeg4video.h.

Referenced by decode_studio_vop_header(), decode_studiovisualobject(), decode_vol_header(), decode_vop_header(), ff_mpeg4_decode_studio_slice_header(), and ff_mpeg4_decode_video_packet_header().

◆ vol_sprite_usage

int Mpeg4DecContext::vol_sprite_usage

Definition at line 78 of file mpeg4video.h.

Referenced by decode_vol_header(), decode_vop_header(), ff_mpeg4_decode_video_packet_header(), mpeg4_decode_partition_a(), nvdec_mpeg4_start_frame(), and vaapi_mpeg4_start_frame().

◆ sprite_brightness_change

int Mpeg4DecContext::sprite_brightness_change

Definition at line 79 of file mpeg4video.h.

Referenced by decode_vol_header(), and decode_vop_header().

◆ num_sprite_warping_points

int Mpeg4DecContext::num_sprite_warping_points

Definition at line 80 of file mpeg4video.h.

Referenced by decode_vol_header(), decode_vop_header(), mpeg4_decode_sprite_trajectory(), and vaapi_mpeg4_start_frame().

◆ sprite_traj

uint16_t Mpeg4DecContext::sprite_traj[4][2]

sprite trajectory points

Definition at line 82 of file mpeg4video.h.

Referenced by mpeg4_decode_sprite_trajectory(), and vaapi_mpeg4_start_frame().

◆ sprite_shift

int Mpeg4DecContext::sprite_shift[2]

sprite shift [isChroma]

Definition at line 84 of file mpeg4video.h.

Referenced by get_amv(), and mpeg4_decode_sprite_trajectory().

◆ rvlc

int Mpeg4DecContext::rvlc

Definition at line 87 of file mpeg4video.h.

Referenced by decode_vol_header(), and vaapi_mpeg4_start_frame().

◆ resync_marker

int Mpeg4DecContext::resync_marker

could this stream contain resync markers

Definition at line 89 of file mpeg4video.h.

Referenced by decode_vol_header(), decode_vop_header(), mpeg4_is_resync(), nvdec_mpeg4_start_frame(), vaapi_mpeg4_start_frame(), and vdpau_mpeg4_start_frame().

◆ t_frame

int Mpeg4DecContext::t_frame

time distance of first I -> B, used for interlaced B-frames

Definition at line 91 of file mpeg4video.h.

Referenced by decode_vol_header(), and decode_vop_header().

◆ new_pred

int Mpeg4DecContext::new_pred

Definition at line 93 of file mpeg4video.h.

Referenced by decode_vol_header(), decode_vop_header(), and ff_mpeg4_decode_video_packet_header().

◆ enhancement_type

int Mpeg4DecContext::enhancement_type

Definition at line 94 of file mpeg4video.h.

Referenced by decode_vol_header(), and decode_vop_header().

◆ scalability

int Mpeg4DecContext::scalability

Definition at line 95 of file mpeg4video.h.

Referenced by decode_vol_header(), and decode_vop_header().

◆ use_intra_dc_vlc

int Mpeg4DecContext::use_intra_dc_vlc

Definition at line 96 of file mpeg4video.h.

Referenced by mpeg4_decode_block().

◆ intra_dc_threshold

int Mpeg4DecContext::intra_dc_threshold

QP above which the ac VLC should be used for intra dc.

Definition at line 99 of file mpeg4video.h.

Referenced by decode_vop_header(), and mpeg4_get_intra_dc_vlc_thr().

◆ divx_version

int Mpeg4DecContext::divx_version

Definition at line 102 of file mpeg4video.h.

Referenced by decode_init(), decode_user_data(), decode_vop_header(), ff_mpeg4_decode_picture_header(), ff_mpeg4_workaround_bugs(), get_amv(), and mpeg4_decode_sprite_trajectory().

◆ divx_build

int Mpeg4DecContext::divx_build

Definition at line 103 of file mpeg4video.h.

Referenced by decode_init(), decode_user_data(), ff_mpeg4_workaround_bugs(), get_amv(), and mpeg4_decode_sprite_trajectory().

◆ xvid_build

int Mpeg4DecContext::xvid_build

Definition at line 104 of file mpeg4video.h.

Referenced by decode_init(), decode_user_data(), ff_mpeg4_decode_picture_header(), and ff_mpeg4_workaround_bugs().

◆ lavc_build

int Mpeg4DecContext::lavc_build

Definition at line 105 of file mpeg4video.h.

Referenced by decode_init(), decode_user_data(), and ff_mpeg4_workaround_bugs().

◆ showed_packed_warning

int Mpeg4DecContext::showed_packed_warning

flag for having shown the warning about invalid Divx B-frames

Definition at line 108 of file mpeg4video.h.

Referenced by ff_mpeg4_frame_end(), and mpeg4video_parse_init().

◆ vol_control_parameters

int Mpeg4DecContext::vol_control_parameters

does the stream contain the low_delay flag, used to work around buggy encoders.

Definition at line 111 of file mpeg4video.h.

Referenced by decode_vol_header(), decode_vop_header(), and ff_mpeg4_workaround_bugs().

◆ cplx_estimation_trash_i

int Mpeg4DecContext::cplx_estimation_trash_i

Definition at line 112 of file mpeg4video.h.

Referenced by decode_vol_header(), and decode_vop_header().

◆ cplx_estimation_trash_p

int Mpeg4DecContext::cplx_estimation_trash_p

Definition at line 113 of file mpeg4video.h.

Referenced by decode_vol_header(), and decode_vop_header().

◆ cplx_estimation_trash_b

int Mpeg4DecContext::cplx_estimation_trash_b

Definition at line 114 of file mpeg4video.h.

Referenced by decode_vol_header(), and decode_vop_header().

◆ studio_intra_tab

VLC Mpeg4DecContext::studio_intra_tab[12]

Definition at line 116 of file mpeg4video.h.

Referenced by decode_end(), init_studio_vlcs(), and mpeg4_decode_studio_block().

◆ studio_luma_dc

VLC Mpeg4DecContext::studio_luma_dc

Definition at line 117 of file mpeg4video.h.

Referenced by decode_end(), init_studio_vlcs(), and mpeg4_decode_studio_block().

◆ studio_chroma_dc

VLC Mpeg4DecContext::studio_chroma_dc

Definition at line 118 of file mpeg4video.h.

Referenced by decode_end(), init_studio_vlcs(), and mpeg4_decode_studio_block().

◆ rgb

int Mpeg4DecContext::rgb

Definition at line 120 of file mpeg4video.h.

Referenced by decode_studiovisualobject(), and mpeg4_decode_studio_block().

The documentation for this struct was generated from the following file:

libavcodec/mpeg4video.h