AVCodecContext Struct Reference

#include <avcodec.h>

Collaboration diagram for AVCodecContext:


Data Fields
AVClass *	av_class
int	bit_rate
int	bit_rate_tolerance
int	flags
int	sub_id
int	me_method
void *	extradata
int	extradata_size
AVRational	time_base
int	width
int	height
int	gop_size
enum PixelFormat	pix_fmt
int	rate_emu
void(*	draw_horiz_band )(struct AVCodecContext s, const AVFrame src, int offset[4], int y, int type, int height)
int	sample_rate
	samples per sec
int	channels
enum SampleFormat	sample_fmt
	sample format, currenly unused
int	frame_size
int	frame_number
	audio or video frame number
int	real_pict_num
	returns the real picture number of previous encoded frame
int	delay
float	qcompress
	amount of qscale change between easy & hard scenes (0.0-1.0)
float	qblur
	amount of qscale smoothing over time (0.0-1.0)
int	qmin
int	qmax
int	max_qdiff
int	max_b_frames
float	b_quant_factor
int	rc_strategy
int	b_frame_strategy
int	hurry_up
struct AVCodec *	codec
void *	priv_data
int	rtp_mode
int	rtp_payload_size
void(*	rtp_callback )(struct AVCodecContext avctx, void data, int size, int mb_nb)
int	mv_bits
int	header_bits
int	i_tex_bits
int	p_tex_bits
int	i_count
int	p_count
int	skip_count
int	misc_bits
int	frame_bits
void *	opaque
char	codec_name [32]
enum CodecType	codec_type
enum CodecID	codec_id
unsigned int	codec_tag
int	workaround_bugs
int	luma_elim_threshold
int	chroma_elim_threshold
int	strict_std_compliance
float	b_quant_offset
int	error_resilience
int(*	get_buffer )(struct AVCodecContext c, AVFrame pic)
void(*	release_buffer )(struct AVCodecContext c, AVFrame pic)
int	has_b_frames
int	block_align
int	parse_only
int	mpeg_quant
char *	stats_out
char *	stats_in
float	rc_qsquish
float	rc_qmod_amp
int	rc_qmod_freq
RcOverride *	rc_override
int	rc_override_count
char *	rc_eq
int	rc_max_rate
int	rc_min_rate
int	rc_buffer_size
float	rc_buffer_aggressivity
float	i_quant_factor
float	i_quant_offset
float	rc_initial_cplx
int	dct_algo
float	lumi_masking
float	temporal_cplx_masking
float	spatial_cplx_masking
float	p_masking
float	dark_masking
int	unused
int	idct_algo
int	slice_count
int *	slice_offset
int	error_concealment
unsigned	dsp_mask
int	bits_per_sample
int	prediction_method
AVRational	sample_aspect_ratio
AVFrame *	coded_frame
int	debug
int	debug_mv
uint64_t	error [4]
int	mb_qmin
int	mb_qmax
int	me_cmp
int	me_sub_cmp
int	mb_cmp
int	ildct_cmp
int	dia_size
int	last_predictor_count
int	pre_me
int	me_pre_cmp
int	pre_dia_size
int	me_subpel_quality
enum PixelFormat(*	get_format )(struct AVCodecContext s, const enum PixelFormat fmt)
int	dtg_active_format
int	me_range
int	intra_quant_bias
int	inter_quant_bias
int	color_table_id
int	internal_buffer_count
void *	internal_buffer
int	global_quality
int	coder_type
int	context_model
int	slice_flags
int	xvmc_acceleration
int	mb_decision
uint16_t *	intra_matrix
uint16_t *	inter_matrix
unsigned int	stream_codec_tag
int	scenechange_threshold
int	lmin
int	lmax
struct AVPaletteControl *	palctrl
int	noise_reduction
int(*	reget_buffer )(struct AVCodecContext c, AVFrame pic)
int	rc_initial_buffer_occupancy
int	inter_threshold
int	flags2
int	error_rate
int	antialias_algo
int	quantizer_noise_shaping
int	thread_count
int(*	execute )(struct AVCodecContext c, int(func)(struct AVCodecContext c2, void arg), void *arg2, int ret, int count)
void *	thread_opaque
int	me_threshold
int	mb_threshold
int	intra_dc_precision
int	nsse_weight
int	skip_top
int	skip_bottom
int	profile
int	level
int	lowres
int	coded_width
int	coded_height
int	frame_skip_threshold
int	frame_skip_factor
int	frame_skip_exp
int	frame_skip_cmp
float	border_masking
int	mb_lmin
int	mb_lmax
int	me_penalty_compensation
enum AVDiscard	skip_loop_filter
enum AVDiscard	skip_idct
enum AVDiscard	skip_frame

Detailed Description

main external api structure.

Definition at line 562 of file avcodec.h.

Field Documentation

AVClass* AVCodecContext::av_class

Info on struct for av_log

set by avcodec_alloc_context

Definition at line 567 of file avcodec.h.

Referenced by avcodec_get_context_defaults().

int AVCodecContext::bit_rate

the average bitrate.

encoding: set by user. unused for constant quantizer encoding
decoding: set by lavc. 0 or some bitrate if this info is available in the stream

Definition at line 573 of file avcodec.h.

Referenced by a52_decode_frame(), ac3_decode_frame(), AC3_encode_init(), add_audio_stream(), add_av_stream(), add_codec(), add_video_stream(), adx_decode_header(), amr_nb_encode_init(), audio_encode_example(), av_encode(), avcodec_get_context_defaults(), avcodec_string(), decode_frame(), decode_frame_adu(), decode_frame_mp3on4(), decode_wave_header(), dts_decode_frame(), encode(), encode_init(), Faac_encode_init(), ff_xvid_encode_init(), find_stream_in_feed(), g726_init(), modify_current_stream(), MP3lame_encode_init(), mpa_decode_header(), MPA_encode_init(), mpeg_decode_postinit(), mpegvideo_extract_headers(), new_audio_stream(), new_video_stream(), oggvorbis_init_encoder(), FileAC3::open_file(), parse_ffconfig(), video_encode_example(), wma_decode_init(), and X264_init().

int AVCodecContext::bit_rate_tolerance

number of bits the bitstream is allowed to diverge from the reference. the reference can be CBR (for CBR pass1) or VBR (for pass2)

encoding: set by user. unused for constant quantizer encoding
decoding: unused

Definition at line 581 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), encode(), ff_rate_estimate_qscale(), new_video_stream(), and parse_ffconfig().

int AVCodecContext::flags

CODEC_FLAG_*.

encoding: set by user.
decoding: set by user.

Definition at line 588 of file avcodec.h.

Referenced by add_video_stream(), av_encode(), av_parser_change(), avcodec_default_get_buffer(), avcodec_string(), common_init(), dct_get(), decode_frame(), do_video_stats(), dsputil_init_mmx(), encode(), encode_frame(), encode_init(), encode_q_branch(), Faac_encode_init(), ff_h263_decode_frame(), ff_xvid_encode_init(), get_flags(), h261_decode_frame(), idct_put(), indeo3_decode_frame(), iv_decode_frame(), mjpeg_decode_init(), mpeg_decode_frame(), mpeg_decode_init(), MPV_common_init(), new_audio_stream(), new_video_stream(), opt_input_file(), parse_ffconfig(), print_report(), render_fragments(), render_slice(), stream_component_open(), svq1_decode_init(), svq3_decode_frame(), vc9_decode_frame(), video_decode_example(), vp3_decode_frame(), and X264_init().

int AVCodecContext::sub_id

some codecs needs additionnal format info. It is stored here

encoding: set by user.
decoding: set by lavc. (FIXME is this ok?)

Definition at line 595 of file avcodec.h.

Referenced by avcodec_string(), decode_frame(), decode_frame_adu(), dvbsub_init_decoder(), mpa_decode_header(), mpeg1_decode_sequence(), mpeg_decode_postinit(), mpeg_decode_sequence_extension(), mpegvideo_extract_headers(), rv10_decode_init(), rv20_decode_picture_header(), and vcr2_init_sequence().

int AVCodecContext::me_method

motion estimation algorithm used for video coding.

encoding: MUST be set by user.
decoding: unused

Definition at line 602 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), encode(), encode_frame(), ff_xvid_encode_init(), and new_video_stream().

void* AVCodecContext::extradata

some codecs need / can use extra-data like huffman tables. mjpeg: huffman tables rv10: additional flags mpeg4: global headers (they can be in the bitstream or here) the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger then extradata_size to avoid prolems if its read with the bitstream reader

encoding: set/allocated/freed by lavc.
decoding: set/allocated/freed by user.

Definition at line 614 of file avcodec.h.

Referenced by alac_set_info(), av_encode(), av_mpeg4_decode_header(), av_parser_change(), decode_ext_header(), decode_frame(), decode_init(), decode_init_mp3on4(), encode_end(), encode_init(), Faac_encode_init(), faac_init_mp4(), ff_h263_decode_frame(), ff_xvid_encode_close(), ff_xvid_encode_init(), flac_decode_init(), flic_decode_init(), idcin_decode_init(), mjpeg_decode_init(), oggvorbis_decode_init(), oggvorbis_encode_close(), oggvorbis_encode_init(), quicktime_new_ffmpeg(), ra288_decode_frame(), rv10_decode_init(), rv20_decode_picture_header(), sonic_decode_init(), svq3_decode_frame(), theora_decode_init(), Theora_decode_init(), vc9_decode_init(), vmdvideo_decode_init(), vorbis_decode_init(), vqa_decode_init(), wma_decode_init(), and xvid_strip_vol_header().

int AVCodecContext::extradata_size

AVRational AVCodecContext::time_base

time base in which the timestamps are specified.

encoding: MUST be set by user
decoding: set by lavc.

Definition at line 623 of file avcodec.h.

Referenced by add_av_stream(), add_codec(), add_video_stream(), av_encode(), avcodec_get_context_defaults(), avcodec_string(), decode_slice_header(), decode_vol_header(), decode_vop_header(), do_audio_out(), do_video_out(), do_video_stats(), encode(), ff_h261_encode_picture_header(), ff_rate_control_init(), ff_rate_estimate_qscale(), ff_vbv_update(), ff_xvid_encode_init(), h263_decode_picture_header(), init_pass2(), modify_qscale(), mpeg_decode_postinit(), mpegvideo_extract_headers(), mpegvideo_parse(), new_video_stream(), oggvorbis_decode_init(), opt_input_file(), opt_target(), output_packet(), parse_ffconfig(), prepare_grab(), Theora_decode_init(), video_encode_example(), write_audio_frame(), write_video_frame(), X264_init(), and xvid_correct_framerate().

int AVCodecContext::width

picture width / height.

encoding: MUST be set by user.
decoding: set by lavc. Note, for compatibility its possible to set this instead of coded_width/height before decoding

Definition at line 632 of file avcodec.h.

Referenced by aasc_decode_frame(), add_av_stream(), add_codec(), add_video_stream(), alloc_blocks(), av_encode(), avcodec_default_get_buffer(), avcodec_default_reget_buffer(), avcodec_encode_video(), avcodec_open(), avcodec_set_dimensions(), avcodec_string(), cinepak_decode(), cinepak_decode_init(), common_init(), cyuv_decode_init(), decode(), decode_frame(), decode_i_frame(), decode_init(), decode_p_frame(), decode_slice_header(), do_video_out(), do_video_stats(), dv_codec_profile(), dvvideo_decode_frame(), encode(), encode_frame(), encode_init(), ff_print_debug_info(), ff_xvid_encode_init(), find_stream_in_feed(), flic_decode_frame(), frame_start(), idcin_decode_vlcs(), indeo3_decode_init(), init_codec(), ipvideo_decode_init(), ipvideo_decode_opcodes(), ir2_decode_frame(), msrle_decode_pal4(), msvideo1_decode_16bit(), msvideo1_decode_8bit(), new_video_stream(), open_video(), opt_input_file(), pam_encode_frame(), parse_ffconfig(), pnm_decode_frame(), pnm_decode_header(), pnm_encode_frame(), pnm_parse(), pre_process_video_frame(), prepare_grab(), print_report(), quicktime_ffmpeg_decode(), quicktime_new_ffmpeg(), raw_decode(), raw_encode(), raw_init_decoder(), roqvideo_decode_frame(), rpza_decode_stream(), rv10_decode_init(), smc_decode_stream(), sp5x_decode_frame(), svq1_decode_init(), svq3_decode_frame(), theora_decode_header(), Theora_decode_init(), truemotion1_decode_16bit(), truemotion1_decode_24bit(), truemotion1_decode_header(), truemotion1_decode_init(), ulti_decode_init(), vc9_decode_frame(), vc9_decode_init(), video_decode_example(), video_encode_example(), vmd_decode(), vp3_decode_init(), write_video_frame(), X264_init(), xan_decode_init(), xan_wc3_copy_pixel_run(), xan_wc3_decode_frame(), and xan_wc3_output_pixel_run().

int AVCodecContext::height

Definition at line 632 of file avcodec.h.

Referenced by aasc_decode_frame(), add_av_stream(), add_codec(), add_video_stream(), alloc_blocks(), av_encode(), avcodec_default_get_buffer(), avcodec_default_reget_buffer(), avcodec_encode_video(), avcodec_open(), avcodec_set_dimensions(), avcodec_string(), cinepak_decode_init(), common_init(), cyuv_decode_init(), decode(), decode_frame(), decode_i_frame(), decode_init(), decode_p_frame(), decode_slice_header(), do_video_out(), do_video_stats(), dv_codec_profile(), dvvideo_decode_frame(), encode(), encode_frame(), encode_init(), ff_draw_horiz_band(), ff_print_debug_info(), ff_xvid_encode_init(), find_stream_in_feed(), flic_decode_frame(), flip(), frame_start(), idcin_decode_vlcs(), indeo3_decode_init(), init_codec(), ipvideo_decode_init(), ipvideo_decode_opcodes(), ir2_decode_frame(), mjpeg_decode_sof(), msrle_decode_pal4(), msrle_decode_pal8(), msvideo1_decode_16bit(), msvideo1_decode_8bit(), new_video_stream(), open_video(), opt_input_file(), pam_encode_frame(), parse_ffconfig(), pnm_decode_frame(), pnm_decode_header(), pnm_encode_frame(), pnm_parse(), pre_process_video_frame(), prepare_grab(), print_report(), qtrle_decode_16bpp(), qtrle_decode_24bpp(), qtrle_decode_32bpp(), qtrle_decode_4bpp(), qtrle_decode_8bpp(), quicktime_ffmpeg_decode(), quicktime_new_ffmpeg(), raw_decode(), raw_encode(), raw_init_decoder(), roqvideo_decode_frame(), rpza_decode_stream(), rv10_decode_init(), smc_decode_stream(), sp5x_decode_frame(), svq1_decode_init(), svq3_decode_frame(), theora_decode_header(), Theora_decode_init(), truemotion1_decode_16bit(), truemotion1_decode_24bit(), truemotion1_decode_frame(), truemotion1_decode_header(), ulti_decode_init(), vc9_decode_frame(), vc9_decode_init(), video_decode_example(), video_encode_example(), vmd_decode(), vp3_decode_init(), write_video_frame(), X264_init(), xan_decode_init(), and xan_wc3_decode_frame().

int AVCodecContext::gop_size

the number of pictures in a group of pitures, or 0 for intra_only.

encoding: set by user.
decoding: unused

Definition at line 641 of file avcodec.h.

Referenced by add_av_stream(), add_video_stream(), avcodec_get_context_defaults(), encode(), encode_frame(), ff_xvid_encode_init(), new_video_stream(), parse_ffconfig(), video_encode_example(), and X264_init().

enum PixelFormat AVCodecContext::pix_fmt

pixel format, see PIX_FMT_xxx.

encoding: set by user.
decoding: set by lavc.

Definition at line 648 of file avcodec.h.

Referenced by aasc_decode_init(), add_video_stream(), avcodec_align_dimensions(), avcodec_default_get_buffer(), avcodec_default_reget_buffer(), avcodec_get_context_defaults(), avcodec_string(), cinepak_decode_init(), cyuv_decode_init(), decode(), FFMPEG::decode(), decode_frame(), decode_init(), do_video_out(), dvvideo_decode_frame(), dvvideo_encode_frame(), dvvideo_init(), encode(), encode_frame(), encode_init(), ff_h263_decode_init(), ff_print_debug_info(), ff_xvid_encode_frame(), flic_decode_init(), get_chroma_factor(), h261_decode_init(), idcin_decode_init(), indeo3_decode_init(), ipvideo_decode_init(), ir2_decode_init(), mjpeg_decode_sof(), MPV_common_init(), msrle_decode_init(), msvideo1_decode_8bit(), msvideo1_decode_init(), new_video_stream(), open_video(), opt_input_file(), pam_encode_frame(), pnm_decode_frame(), pnm_decode_header(), pnm_encode_frame(), pnm_parse(), pre_process_video_frame(), qtrle_decode_init(), quicktime_ffmpeg_decode(), raw_decode(), raw_encode(), raw_init_decoder(), raw_init_encoder(), read_header(), roq_decode_init(), rpza_decode_init(), rv10_decode_init(), smc_decode_init(), sp5x_decode_frame(), svq1_decode_init(), Theora_decode_init(), truemotion1_decode_header(), ulti_decode_init(), vc9_decode_frame(), vc9_decode_init(), vcr2_init_sequence(), video_encode_example(), vmdvideo_decode_init(), vp3_decode_init(), vqa_decode_init(), write_video_frame(), xan_decode_frame(), xan_decode_init(), xan_wc3_build_palette(), xan_wc3_copy_pixel_run(), xan_wc3_decode_frame(), and xan_wc3_output_pixel_run().

int AVCodecContext::rate_emu

Frame rate emulation. If not zero lower layer (i.e. format handler) has to read frames at native frame rate.

encoding: set by user.
decoding: unused.

Definition at line 656 of file avcodec.h.

Referenced by opt_input_file().

void(* AVCodecContext::draw_horiz_band)(struct AVCodecContext *s, const AVFrame *src, int offset[4], int y, int type, int height)

if non NULL, 'draw_horiz_band' is called by the libavcodec decoder to draw an horizontal band. It improve cache usage. Not all codecs can do that. You must check the codec capabilities before

encoding: unused

decoding: set by user.

Parameters:

	height	the height of the slice
	y	the y position of the slice
	type	1->top field, 2->bottom field, 3->frame
	offset	offset into the AVFrame.data from which the slice should be read

Referenced by draw_slice(), ff_draw_horiz_band(), ff_init_block_index(), and MPV_decode_mb_internal().

int AVCodecContext::sample_rate

samples per sec

Definition at line 675 of file avcodec.h.

Referenced by a52_decode_frame(), ac3_decode_frame(), AC3_encode_init(), add_audio_stream(), add_av_stream(), add_codec(), adx_decode_header(), amr_nb_encode_init(), audio_encode_example(), av_encode(), avcodec_string(), decode_frame(), decode_frame_adu(), decode_frame_mp3on4(), decode_wave_header(), do_audio_out(), dts_decode_frame(), faac_decode_init(), Faac_encode_init(), faac_init_mp4(), find_stream_in_feed(), g726_init(), init_decode(), libgsm_init(), metadata_streaminfo(), MP3lame_encode_init(), mpa_decode_header(), MPA_encode_init(), mpegaudio_parse(), new_audio_stream(), oggvorbis_decode_init(), oggvorbis_init_encoder(), open_audio(), FileAC3::open_file(), opt_input_file(), parse_ffconfig(), prepare_grab(), sonic_decode_init(), stream_component_open(), vmdaudio_decode_init(), vorbis_decode_init(), and wma_decode_init().

int AVCodecContext::channels

Definition at line 676 of file avcodec.h.

Referenced by a52_decode_frame(), ac3_decode_frame(), AC3_encode_init(), add_audio_stream(), add_av_stream(), add_codec(), adpcm_decode_frame(), adx_decode_frame(), adx_decode_header(), alac_decode_init(), amr_nb_encode_init(), audio_encode_example(), av_encode(), avcodec_string(), decode_frame(), decode_frame_adu(), decode_frame_mp3on4(), decode_init_mp3on4(), decode_wave_header(), do_audio_out(), dpcm_decode_init(), dts_decode_frame(), Faac_encode_frame(), Faac_encode_init(), faac_init_mp4(), g726_init(), init_decode(), libgsm_init(), mace_decode_frame(), mace_decode_init(), metadata_streaminfo(), MP3lame_encode_init(), mpa_decode_header(), MPA_encode_init(), new_audio_stream(), oggvorbis_decode_init(), oggvorbis_init_encoder(), open_audio(), FileAC3::open_file(), opt_input_file(), parse_ffconfig(), pcm_encode_init(), prepare_grab(), sonic_decode_init(), stream_component_open(), vmdaudio_decode_init(), vorbis_decode_init(), wma_decode_init(), and write_audio_frame().

enum SampleFormat AVCodecContext::sample_fmt

sample format, currenly unused

audio sample format.

encoding: set by user.
decoding: set by lavc.

Definition at line 683 of file avcodec.h.

Referenced by decode_init().

int AVCodecContext::frame_size

samples per packet. initialized when calling 'init'

Definition at line 689 of file avcodec.h.

Referenced by AC3_encode_init(), amr_nb_encode_init(), audio_encode_example(), av_encode(), compute_stats(), decode_frame(), decode_frame_adu(), decode_frame_mp3on4(), do_audio_out(), Faac_encode_frame(), Faac_encode_init(), libgsm_init(), MP3lame_encode_frame(), MP3lame_encode_init(), mpa_decode_header(), MPA_encode_init(), oggvorbis_encode_init(), open_audio(), output_packet(), pcm_encode_init(), and FileAC3::write_samples().

int AVCodecContext::frame_number

audio or video frame number

Definition at line 690 of file avcodec.h.

Referenced by avcodec_decode_audio(), avcodec_decode_subtitle(), avcodec_decode_video(), avcodec_encode_audio(), avcodec_encode_subtitle(), avcodec_encode_video(), avcodec_open(), compute_stats(), decode_frame(), encode_frame(), ff_h263_decode_frame(), h261_decode_frame(), http_prepare_data(), rv10_decode_frame(), svq3_decode_frame(), and vc9_decode_frame().

int AVCodecContext::real_pict_num

returns the real picture number of previous encoded frame

Definition at line 691 of file avcodec.h.

int AVCodecContext::delay

number of frames the decoded output will be delayed relative to the encoded input.

encoding: set by lavc.
decoding: unused

Definition at line 699 of file avcodec.h.

float AVCodecContext::qcompress

amount of qscale change between easy & hard scenes (0.0-1.0)

Definition at line 702 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), encode(), get_qscale(), and new_video_stream().

float AVCodecContext::qblur

amount of qscale smoothing over time (0.0-1.0)

Definition at line 703 of file avcodec.h.

Referenced by add_codec(), encode(), ff_rate_estimate_qscale(), init_pass2(), and new_video_stream().

int AVCodecContext::qmin

minimum quantizer.

encoding: set by user.
decoding: unused

Definition at line 710 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), avcodec_string(), encode(), ff_xvid_encode_init(), new_video_stream(), parse_ffconfig(), and X264_init().

int AVCodecContext::qmax

maximum quantizer.

encoding: set by user.
decoding: unused

Definition at line 717 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), avcodec_string(), encode(), ff_xvid_encode_init(), new_video_stream(), parse_ffconfig(), and X264_init().

int AVCodecContext::max_qdiff

maximum quantizer difference etween frames.

encoding: set by user.
decoding: unused

Definition at line 724 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), encode(), get_diff_limited_q(), new_video_stream(), parse_ffconfig(), and X264_init().

int AVCodecContext::max_b_frames

maximum number of b frames between non b frames. note: the output will be delayed by max_b_frames+1 relative to the input

encoding: set by user.
decoding: unused

Definition at line 732 of file avcodec.h.

Referenced by add_video_stream(), decode_sequence_header(), ff_xvid_encode_init(), new_video_stream(), standard_decode_picture_primary_header(), vc9_decode_init(), video_encode_example(), and X264_init().

float AVCodecContext::b_quant_factor

qscale factor between ip and b frames.

encoding: set by user.
decoding: unused

Definition at line 739 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), encode(), ff_xvid_encode_init(), get_diff_limited_q(), get_qminmax(), get_qscale(), init_pass2(), and new_video_stream().

int AVCodecContext::rc_strategy

obsolete FIXME remove

Definition at line 742 of file avcodec.h.

int AVCodecContext::b_frame_strategy

Definition at line 743 of file avcodec.h.

Referenced by new_video_stream().

int AVCodecContext::hurry_up

hurry up amount. deprecated in favor of skip_idct and skip_frame

encoding: unused
decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header

Definition at line 751 of file avcodec.h.

Referenced by ff_h263_decode_frame(), h261_decode_frame(), mpeg_decode_frame(), svq1_decode_frame(), svq3_decode_frame(), and vc9_decode_frame().

struct AVCodec* AVCodecContext::codec [read]

Definition at line 753 of file avcodec.h.

Referenced by add_audio_stream(), add_av_stream(), add_video_stream(), adpcm_decode_frame(), adpcm_decode_init(), avcodec_close(), avcodec_decode_audio(), avcodec_decode_subtitle(), avcodec_decode_video(), avcodec_encode_audio(), avcodec_encode_subtitle(), avcodec_encode_video(), avcodec_flush_buffers(), avcodec_open(), build_feed_streams(), common_init(), compute_stats(), context_to_name(), do_audio_out(), dpcm_decode_frame(), dpcm_decode_init(), encode_init(), ff_h263_decode_init(), h261_decode_init(), http_prepare_data(), mace_decode_frame(), mpeg_decode_init(), new_audio_stream(), new_video_stream(), open_audio(), open_video(), opt_new_subtitle_stream(), pcm_decode_frame(), pcm_decode_init(), pcm_encode_close(), pcm_encode_frame(), pcm_encode_init(), stream_component_close(), stream_component_open(), svq1_decode_init(), wma_decode_init(), write_audio_frame(), write_video_frame(), xan_decode_frame(), and xan_decode_init().

void* AVCodecContext::priv_data

Definition at line 755 of file avcodec.h.

Referenced by a52_decode_end(), a52_decode_frame(), a52_decode_init(), aasc_decode_end(), aasc_decode_frame(), aasc_decode_init(), ac3_decode_frame(), ac3_decode_init(), AC3_encode_frame(), AC3_encode_init(), adpcm_decode_frame(), adpcm_decode_init(), adx_decode_frame(), adx_decode_init(), alac_decode_close(), alac_decode_frame(), alac_decode_init(), amr_nb_decode_close(), amr_nb_decode_frame(), amr_nb_decode_init(), amr_nb_encode_close(), amr_nb_encode_frame(), amr_nb_encode_init(), avcodec_close(), avcodec_open(), cinepak_decode_end(), cinepak_decode_frame(), cinepak_decode_init(), common_init(), cyuv_decode_frame(), cyuv_decode_init(), decode_block(), decode_close_mp3on4(), decode_end(), decode_frame(), decode_frame_adu(), decode_frame_mp3on4(), decode_init(), decode_init_mp3on4(), decode_sequence_header(), dpcm_decode_frame(), dpcm_decode_init(), dts_decode_frame(), dts_decode_init(), dv_decode_mt(), dv_encode_mt(), dvbsub_close_decoder(), dvbsub_decode(), dvbsub_display_end_segment(), dvbsub_encode(), dvbsub_init_decoder(), dvbsub_parse_clut_segment(), dvbsub_parse_object_segment(), dvbsub_parse_page_segment(), dvbsub_parse_pixel_data_block(), dvbsub_parse_region_segment(), dvvideo_decode_frame(), dvvideo_encode_frame(), dvvideo_init(), encode_end(), encode_frame(), encode_init(), faac_decode_end(), faac_decode_frame(), faac_decode_init(), Faac_encode_close(), Faac_encode_frame(), Faac_encode_init(), faac_init_mp4(), ff_h263_decode_end(), ff_h263_decode_frame(), ff_h263_decode_init(), ff_mpeg_flush(), ff_xvid_encode_close(), ff_xvid_encode_frame(), ff_xvid_encode_init(), flac_decode_close(), flac_decode_frame(), flac_decode_init(), flac_flush(), flic_decode_end(), flic_decode_frame(), flic_decode_init(), flush_dpb(), g726_decode_frame(), g726_encode_frame(), g726_init(), h261_decode_end(), h261_decode_frame(), h261_decode_init(), idcin_decode_end(), idcin_decode_frame(), idcin_decode_init(), indeo3_decode_end(), indeo3_decode_frame(), indeo3_decode_init(), ipvideo_decode_end(), ipvideo_decode_frame(), ipvideo_decode_init(), ir2_decode_frame(), ir2_decode_init(), libgsm_close(), libgsm_decode_frame(), libgsm_encode_frame(), libgsm_init(), mace_decode_frame(), mdec_common_init(), mjpeg_decode_end(), mjpeg_decode_frame(), mjpeg_decode_init(), mjpegb_decode_frame(), MP3lame_encode_close(), MP3lame_encode_frame(), MP3lame_encode_init(), MPA_encode_frame(), MPA_encode_init(), mpeg1_decode_picture(), mpeg1_decode_sequence(), mpeg_decode_end(), mpeg_decode_extension(), mpeg_decode_frame(), mpeg_decode_gop(), mpeg_decode_init(), mpeg_decode_postinit(), msrle_decode_end(), msrle_decode_frame(), msrle_decode_init(), msvideo1_decode_end(), msvideo1_decode_frame(), msvideo1_decode_init(), oggvorbis_decode_close(), oggvorbis_decode_frame(), oggvorbis_decode_init(), oggvorbis_encode_close(), oggvorbis_encode_frame(), oggvorbis_encode_init(), pam_encode_frame(), pcm_decode_frame(), pcm_decode_init(), pnm_decode_frame(), pnm_encode_frame(), qtrle_decode_end(), qtrle_decode_frame(), qtrle_decode_init(), ra144_decode_frame(), ra144_decode_init(), ra288_decode_init(), raw_close_decoder(), raw_decode(), raw_init_decoder(), raw_init_encoder(), read_huffman_tree(), roq_decode_end(), roq_decode_frame(), roq_decode_init(), rpza_decode_end(), rpza_decode_frame(), rpza_decode_init(), rv10_decode_end(), rv10_decode_frame(), rv10_decode_init(), rv10_decode_packet(), shorten_decode_close(), shorten_decode_frame(), shorten_decode_init(), shorten_flush(), slice_end(), smc_decode_end(), smc_decode_frame(), smc_decode_init(), sonic_decode_close(), sonic_decode_frame(), sonic_decode_init(), sp5x_decode_frame(), svq1_decode_end(), svq1_decode_frame(), svq1_decode_init(), svq3_decode_frame(), Theora_decode_end(), Theora_decode_frame(), theora_decode_header(), theora_decode_init(), Theora_decode_init(), theora_decode_tables(), truemotion1_decode_end(), truemotion1_decode_frame(), truemotion1_decode_init(), ulti_decode_frame(), ulti_decode_init(), vc9_decode_end(), vc9_decode_frame(), vc9_decode_init(), vcr2_init_sequence(), vmdaudio_decode_frame(), vmdaudio_decode_init(), vmdvideo_decode_end(), vmdvideo_decode_frame(), vmdvideo_decode_init(), vorbis_decode_close(), vorbis_decode_frame(), vorbis_decode_init(), vp3_decode_end(), vp3_decode_frame(), vp3_decode_init(), vqa_decode_end(), vqa_decode_frame(), vqa_decode_init(), wma_decode_end(), wma_decode_init(), wma_decode_superframe(), wmv2_decode_init(), X264_close(), X264_frame(), X264_init(), xan_decode_end(), xan_decode_frame(), and xan_decode_init().

int AVCodecContext::rtp_mode

Definition at line 758 of file avcodec.h.

Referenced by new_video_stream().

int AVCodecContext::rtp_payload_size

Definition at line 760 of file avcodec.h.

Referenced by new_video_stream().

void(* AVCodecContext::rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb)

int AVCodecContext::mv_bits

Definition at line 777 of file avcodec.h.

int AVCodecContext::header_bits

Definition at line 778 of file avcodec.h.

int AVCodecContext::i_tex_bits

Definition at line 779 of file avcodec.h.

int AVCodecContext::p_tex_bits

Definition at line 780 of file avcodec.h.

int AVCodecContext::i_count

Definition at line 781 of file avcodec.h.

int AVCodecContext::p_count

Definition at line 782 of file avcodec.h.

int AVCodecContext::skip_count

Definition at line 783 of file avcodec.h.

int AVCodecContext::misc_bits

Definition at line 784 of file avcodec.h.

int AVCodecContext::frame_bits

number of bits used for the previously encoded frame.

encoding: set by lavc
decoding: unused

Definition at line 791 of file avcodec.h.

void* AVCodecContext::opaque

private data of the user, can be used to carry app specific stuff.

encoding: set by user
decoding: set by user

Definition at line 798 of file avcodec.h.

char AVCodecContext::codec_name[32]

Definition at line 800 of file avcodec.h.

Referenced by avcodec_string().

unsigned int AVCodecContext::codec_tag

fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). this is used to workaround some encoder bugs

encoding: set by user, if not then the default based on codec_id will be used
decoding: set by user, will be converted to upper case by lavc during init

Definition at line 810 of file avcodec.h.

Referenced by av_encode(), avcodec_string(), decode_vol_header(), dpcm_decode_frame(), dpcm_decode_init(), ff_h263_decode_frame(), ff_mpeg4_decode_picture_header(), ff_xvid_encode_init(), flip(), h263_decode_picture_header(), mpeg_decode_frame(), MPV_common_init(), new_audio_stream(), new_video_stream(), raw_init_decoder(), raw_init_encoder(), and vp3_decode_init().

int AVCodecContext::workaround_bugs

workaround bugs in encoders which sometimes cannot be detected automatically.

encoding: set by user
decoding: set by user

Definition at line 817 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), decode_init(), ff_h263_decode_init(), ff_mpeg4_set_direct_mv(), new_video_stream(), opt_input_file(), and stream_component_open().

int AVCodecContext::luma_elim_threshold

luma single coeff elimination threshold.

encoding: set by user
decoding: unused

Definition at line 840 of file avcodec.h.

Referenced by new_video_stream(), and parse_ffconfig().

int AVCodecContext::chroma_elim_threshold

chroma single coeff elimination threshold.

encoding: set by user
decoding: unused

Definition at line 847 of file avcodec.h.

Referenced by new_video_stream(), and parse_ffconfig().

int AVCodecContext::strict_std_compliance

strictly follow the std (MPEG4, ...).

encoding: set by user
decoding: unused

Definition at line 854 of file avcodec.h.

Referenced by encode_init(), g726_init(), new_audio_stream(), new_video_stream(), and parse_ffconfig().

float AVCodecContext::b_quant_offset

qscale offset between ip and b frames. if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset) if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)

encoding: set by user.
decoding: unused

Definition at line 868 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), encode(), ff_xvid_encode_init(), get_diff_limited_q(), get_qminmax(), get_qscale(), init_pass2(), and new_video_stream().

int AVCodecContext::error_resilience

error resilience higher values will detect more errors but may missdetect some more or less valid parts as errors.

encoding: unused
decoding: set by user

Definition at line 876 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), encode(), mpeg1_decode_picture(), mpeg_decode_slice(), opt_input_file(), and stream_component_open().

int(* AVCodecContext::get_buffer)(struct AVCodecContext *c, AVFrame *pic)

called at the beginning of each frame to get a buffer for it. if pic.reference is set then the frame will be read later by lavc avcodec_align_dimensions() should be used to find the required width and height, as they normally need to be rounded up to the next multiple of 16

encoding: unused
decoding: set by lavc, user can override

Referenced by alloc_picture(), avcodec_default_reget_buffer(), avcodec_get_context_defaults(), common_init(), cyuv_decode_frame(), decode_frame(), dvvideo_decode_frame(), frame_start(), idcin_decode_frame(), indeo3_decode_frame(), ipvideo_decode_frame(), mjpeg_decode_sof(), pnm_decode_frame(), roq_decode_frame(), sp5x_decode_frame(), truemotion1_decode_frame(), ulti_decode_frame(), vmdvideo_decode_frame(), vp3_decode_frame(), vqa_decode_frame(), and xan_decode_frame().

void(* AVCodecContext::release_buffer)(struct AVCodecContext *c, AVFrame *pic)

called to release buffers which where allocated with get_buffer. a released buffer can be reused in get_buffer() pic.data[*] must be set to NULL

encoding: unused
decoding: set by lavc, user can override

Referenced by aasc_decode_end(), avcodec_default_reget_buffer(), avcodec_get_context_defaults(), cinepak_decode_end(), cyuv_decode_frame(), decode_end(), decode_frame(), dvvideo_decode_frame(), encode_frame(), ff_mpeg_flush(), flic_decode_end(), free_picture(), idcin_decode_end(), idcin_decode_frame(), indeo3_decode_frame(), ipvideo_decode_end(), ipvideo_decode_frame(), ir2_decode_frame(), mjpeg_decode_sof(), MPV_frame_end(), MPV_frame_start(), msrle_decode_end(), msvideo1_decode_end(), pnm_decode_frame(), qtrle_decode_end(), roq_decode_end(), roq_decode_frame(), rpza_decode_end(), smc_decode_end(), truemotion1_decode_end(), truemotion1_decode_frame(), ulti_decode_frame(), vmdvideo_decode_end(), vmdvideo_decode_frame(), vp3_decode_end(), vp3_decode_frame(), vqa_decode_end(), vqa_decode_frame(), xan_decode_end(), and xan_decode_frame().

int AVCodecContext::has_b_frames

if 1 the stream has a 1 frame delay during decoding.

encoding: set by lavc
decoding: set by lavc

Definition at line 906 of file avcodec.h.

Referenced by aasc_decode_init(), av_encode(), cinepak_decode_init(), cyuv_decode_init(), decode_frame(), decode_init(), decode_nal_units(), ff_h263_decode_frame(), flic_decode_init(), idcin_decode_init(), indeo3_decode_init(), ipvideo_decode_init(), mpeg_decode_postinit(), mpegvideo_extract_headers(), msrle_decode_init(), msvideo1_decode_init(), qtrle_decode_init(), roq_decode_init(), rpza_decode_init(), rv10_decode_init(), rv20_decode_picture_header(), smc_decode_init(), svq1_decode_init(), svq3_decode_frame(), truemotion1_decode_init(), ulti_decode_init(), vc9_decode_init(), vcr2_init_sequence(), vmdvideo_decode_init(), vp3_decode_init(), vqa_decode_init(), and xan_decode_init().

int AVCodecContext::block_align

number of bytes per packet if constant and known or 0 used by some WAV based audio codecs

Definition at line 912 of file avcodec.h.

Referenced by adpcm_decode_frame(), av_encode(), decode_wave_header(), libgsm_init(), pcm_encode_init(), ra288_decode_frame(), vmdaudio_decode_init(), and wma_decode_init().

int AVCodecContext::parse_only

Definition at line 914 of file avcodec.h.

Referenced by decode_frame(), decode_frame_adu(), and decode_init().

int AVCodecContext::mpeg_quant

0-> h263 quant 1-> mpeg quant.

encoding: set by user.
decoding: unused

Definition at line 923 of file avcodec.h.

Referenced by ff_xvid_encode_init().

char* AVCodecContext::stats_out

pass1 encoding statistics output buffer.

encoding: set by lavc
decoding: unused

Definition at line 930 of file avcodec.h.

Referenced by do_video_out(), encode_end(), encode_frame(), encode_init(), ff_write_pass1_stats(), ff_xvid_encode_frame(), MPV_common_end(), MPV_common_init(), and output_packet().

char* AVCodecContext::stats_in

pass2 encoding statistics input buffer. concatenated stuff from stats_out of pass1 should be placed here

encoding: allocated/set/freed by user
decoding: unused

Definition at line 938 of file avcodec.h.

Referenced by av_encode(), encode_init(), ff_rate_control_init(), and ff_xvid_encode_init().

float AVCodecContext::rc_qsquish

ratecontrol qmin qmax limiting method. 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax

encoding: set by user.
decoding: unused

Definition at line 946 of file avcodec.h.

Referenced by modify_qscale(), and new_video_stream().

float AVCodecContext::rc_qmod_amp

Definition at line 948 of file avcodec.h.

Referenced by modify_qscale().

int AVCodecContext::rc_qmod_freq

Definition at line 949 of file avcodec.h.

Referenced by modify_qscale().

RcOverride* AVCodecContext::rc_override

ratecontrol override, see RcOverride.

encoding: allocated/set/freed by user.
decoding: unused

Definition at line 956 of file avcodec.h.

Referenced by get_qscale(), and new_video_stream().

int AVCodecContext::rc_override_count

Definition at line 957 of file avcodec.h.

Referenced by get_qscale(), and new_video_stream().

char* AVCodecContext::rc_eq

rate control equation.

encoding: set by user
decoding: unused

Definition at line 964 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), encode(), get_qscale(), and new_video_stream().

int AVCodecContext::rc_max_rate

maximum bitrate.

encoding: set by user.
decoding: unused

Definition at line 971 of file avcodec.h.

Referenced by add_codec(), encode(), ff_vbv_update(), modify_qscale(), new_video_stream(), and parse_ffconfig().

int AVCodecContext::rc_min_rate

minimum bitrate.

encoding: set by user.
decoding: unused

Definition at line 978 of file avcodec.h.

Referenced by encode(), ff_vbv_update(), modify_qscale(), new_video_stream(), and parse_ffconfig().

int AVCodecContext::rc_buffer_size

decoder bitstream buffer size.

encoding: set by user.
decoding: unused

Definition at line 985 of file avcodec.h.

Referenced by add_codec(), encode(), ff_vbv_update(), init_pass2(), modify_qscale(), mpeg1_decode_sequence(), mpeg_decode_sequence_extension(), new_video_stream(), parse_ffconfig(), and X264_init().

float AVCodecContext::rc_buffer_aggressivity

Definition at line 986 of file avcodec.h.

Referenced by add_codec(), encode(), modify_qscale(), and new_video_stream().

float AVCodecContext::i_quant_factor

qscale factor between p and i frames. if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset) if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)

encoding: set by user.
decoding: unused

Definition at line 995 of file avcodec.h.

Referenced by add_codec(), avcodec_get_context_defaults(), encode(), get_diff_limited_q(), get_qminmax(), get_qscale(), init_pass2(), and new_video_stream().

float AVCodecContext::i_quant_offset

qscale offset between p and i frames.

encoding: set by user.
decoding: unused

Definition at line 1002 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), encode(), get_diff_limited_q(), get_qminmax(), get_qscale(), init_pass2(), and new_video_stream().

float AVCodecContext::rc_initial_cplx

initial complexity for pass1 ratecontrol.

encoding: set by user.
decoding: unused

Definition at line 1009 of file avcodec.h.

Referenced by ff_rate_control_init(), and new_video_stream().

int AVCodecContext::dct_algo

dct algorithm, see FF_DCT_* below.

encoding: set by user
decoding: unused

Definition at line 1016 of file avcodec.h.

Referenced by dsputil_init(), dsputil_init_mmx(), dsputil_init_ppc(), MPV_common_init_mlib(), MPV_common_init_mmx(), MPV_common_init_ppc(), and new_video_stream().

float AVCodecContext::lumi_masking

luminance masking (0-> disabled).

encoding: set by user
decoding: unused

Definition at line 1030 of file avcodec.h.

Referenced by adaptive_quantization(), ff_xvid_encode_init(), new_video_stream(), and parse_ffconfig().

float AVCodecContext::temporal_cplx_masking

temporary complexity masking (0-> disabled).

encoding: set by user
decoding: unused

Definition at line 1037 of file avcodec.h.

Referenced by adaptive_quantization(), and new_video_stream().

float AVCodecContext::spatial_cplx_masking

spatial complexity masking (0-> disabled).

encoding: set by user
decoding: unused

Definition at line 1044 of file avcodec.h.

Referenced by adaptive_quantization(), and new_video_stream().

float AVCodecContext::p_masking

p block masking (0-> disabled).

encoding: set by user
decoding: unused

Definition at line 1051 of file avcodec.h.

Referenced by adaptive_quantization(), and new_video_stream().

float AVCodecContext::dark_masking

darkness masking (0-> disabled).

encoding: set by user
decoding: unused

Definition at line 1058 of file avcodec.h.

Referenced by adaptive_quantization(), new_video_stream(), and parse_ffconfig().

int AVCodecContext::unused

Definition at line 1062 of file avcodec.h.

int AVCodecContext::idct_algo

idct algorithm, see FF_IDCT_* below.

encoding: set by user
decoding: set by user

Definition at line 1069 of file avcodec.h.

Referenced by dsputil_init(), dsputil_init_armv4l(), dsputil_init_mmi(), dsputil_init_mmx(), dsputil_init_ppc(), dsputil_init_sh4(), ff_h263_decode_frame(), MPV_common_init_mlib(), MPV_common_init_ppc(), new_video_stream(), opt_input_file(), render_fragments(), render_slice(), stream_component_open(), vcr2_init_sequence(), and vp3_decode_init().

int AVCodecContext::slice_count

slice count.

encoding: set by lavc
decoding: set by user (or 0)

Definition at line 1090 of file avcodec.h.

Referenced by rv10_decode_frame().

int* AVCodecContext::slice_offset

slice offsets in the frame in bytes.

encoding: set/allocated by lavc
decoding: set/allocated by user (or NULL)

Definition at line 1096 of file avcodec.h.

Referenced by rv10_decode_frame().

int AVCodecContext::error_concealment

error concealment flags.

encoding: unused
decoding: set by user

Definition at line 1103 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), encode(), ff_er_frame_end(), guess_mv(), opt_input_file(), and stream_component_open().

unsigned AVCodecContext::dsp_mask

dsp_mask could be add used to disable unwanted CPU features CPU features (i.e. MMX, SSE. ...)

with FORCE flag you may instead enable given CPU features (Dangerous: usable in case of misdetection, improper usage however will result into program crash)

Definition at line 1115 of file avcodec.h.

Referenced by dsputil_init_iwmmxt(), and dsputil_init_mmx().

int AVCodecContext::bits_per_sample

bits per sample/pixel from the demuxer (needed for huffyuv).

encoding: set by lavc
decoding: set by user

Definition at line 1135 of file avcodec.h.

Referenced by alac_decode_init(), cinepak_decode_init(), decode_init(), decode_wave_header(), encode_init(), faac_decode_init(), flip(), msrle_decode_frame(), qtrle_decode_frame(), qtrle_decode_init(), raw_init_decoder(), and vmdaudio_decode_init().

int AVCodecContext::prediction_method

prediction method (needed for huffyuv).

encoding: set by user
decoding: unused

Definition at line 1142 of file avcodec.h.

Referenced by common_init(), encode_init(), and new_video_stream().

AVRational AVCodecContext::sample_aspect_ratio

sample aspect ratio (0 if unknown). numerator and denominator must be relative prime and smaller then 256 for some video standards

encoding: set by user.
decoding: set by lavc.

Definition at line 1153 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), decode_slice_header(), decode_vol_header(), h263_decode_picture_header(), mjpeg_decode_app(), mpeg_decode_postinit(), new_video_stream(), opt_input_file(), and X264_init().

AVFrame* AVCodecContext::coded_frame

the picture in the bitstream.

encoding: set by lavc
decoding: set by lavc

Definition at line 1160 of file avcodec.h.

Referenced by AC3_encode_close(), AC3_encode_init(), amr_nb_encode_close(), amr_nb_encode_init(), common_init(), decode_frame(), decode_init(), do_audio_out(), do_video_out(), do_video_stats(), dvvideo_init(), encode(), encode_init(), Faac_encode_close(), Faac_encode_init(), ff_xvid_encode_init(), g726_close(), g726_init(), http_prepare_data(), libgsm_init(), mdec_common_init(), MP3lame_encode_close(), MP3lame_encode_init(), MPA_encode_close(), MPA_encode_init(), MPV_common_init(), MPV_frame_end(), oggvorbis_encode_close(), oggvorbis_encode_frame(), oggvorbis_encode_init(), output_packet(), pcm_encode_close(), pcm_encode_init(), print_report(), raw_init_decoder(), raw_init_encoder(), ulti_decode_init(), write_audio_frame(), write_video_frame(), and X264_init().

int AVCodecContext::debug

debug.

encoding: set by user.
decoding: set by user.

Definition at line 1167 of file avcodec.h.

Referenced by alloc_picture(), amr_nb_encode_init(), decode_ext_header(), decode_frame(), decode_init(), decode_nal_units(), decode_picture_parameter_set(), decode_seq_parameter_set(), decode_slice_header(), decode_vol_header(), decode_vop_header(), execute_ref_pic_marking(), ff_er_frame_end(), ff_h263_decode_frame(), ff_mpeg4_decode_picture_header(), ff_print_debug_info(), ff_rate_estimate_qscale(), ff_vbv_update(), ff_wmv2_decode_secondary_picture_header(), flv_h263_decode_picture_header(), h263_decode_picture_header(), mjpeg_decode_app(), mjpeg_decode_com(), mjpeg_decode_frame(), mjpeg_decode_sos(), mjpegb_decode_frame(), modify_qscale(), mpeg1_decode_picture(), mpeg1_decode_sequence(), mpeg_decode_frame(), mpeg_decode_gop(), mpeg_decode_picture_display_extension(), mpeg_decode_sequence_display_extension(), mpeg_decode_sequence_extension(), mpeg_decode_slice(), MPV_common_init(), MPV_decode_mb_internal(), msmpeg4_decode_picture_header(), new_video_stream(), opt_input_file(), parse_ffconfig(), predict_slice(), predict_slice_buffered(), print_long_term(), print_short_term(), remove_short(), rv10_decode_init(), rv20_decode_picture_header(), stream_component_open(), svq3_decode_frame(), truemotion1_decode_header(), and vp3_decode_frame().

int AVCodecContext::debug_mv

debug.

encoding: set by user.
decoding: set by user.

Definition at line 1189 of file avcodec.h.

Referenced by alloc_picture(), ff_print_debug_info(), MPV_common_init(), new_video_stream(), opt_input_file(), and stream_component_open().

uint64_t AVCodecContext::error[4]

error.

encoding: set by lavc if flags&CODEC_FLAG_PSNR
decoding: unused

Definition at line 1199 of file avcodec.h.

Referenced by encode_frame(), and print_report().

int AVCodecContext::mb_qmin

minimum MB quantizer.

encoding: unused
decoding: unused

Definition at line 1206 of file avcodec.h.

int AVCodecContext::mb_qmax

maximum MB quantizer.

encoding: unused
decoding: unused

Definition at line 1213 of file avcodec.h.

int AVCodecContext::me_cmp

motion estimation compare function.

encoding: set by user.
decoding: unused

Definition at line 1220 of file avcodec.h.

Referenced by encode(), encode_q_branch(), ff_estimate_motion_b(), ff_estimate_p_frame_motion(), ff_init_me(), hpel_motion_search(), new_video_stream(), and qpel_motion_search().

int AVCodecContext::me_sub_cmp

subpixel motion estimation compare function.

encoding: set by user.
decoding: unused

Definition at line 1226 of file avcodec.h.

Referenced by direct_search(), encode(), encode_q_branch(), ff_estimate_motion_b(), ff_estimate_p_frame_motion(), ff_init_me(), hpel_motion_search(), new_video_stream(), and qpel_motion_search().

int AVCodecContext::mb_cmp

macroblock compare function (not supported yet).

encoding: set by user.
decoding: unused

Definition at line 1232 of file avcodec.h.

Referenced by check_bidir_mv(), direct_search(), encode(), encode_q_branch(), ff_estimate_motion_b(), ff_estimate_p_frame_motion(), ff_init_me(), h263_mv4_search(), interlaced_search(), and new_video_stream().

int AVCodecContext::ildct_cmp

interlaced dct compare function

encoding: set by user.
decoding: unused

Definition at line 1238 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), encode(), and new_video_stream().

int AVCodecContext::dia_size

ME diamond size & shape.

encoding: set by user.
decoding: unused

Definition at line 1260 of file avcodec.h.

int AVCodecContext::last_predictor_count

amount of previous MV predictors (2a+1 x 2a+1 square).

encoding: set by user.
decoding: unused

Definition at line 1267 of file avcodec.h.

Referenced by epzs_motion_search_internal().

int AVCodecContext::pre_me

pre pass for motion estimation.

encoding: set by user.
decoding: unused

Definition at line 1274 of file avcodec.h.

Referenced by new_video_stream().

int AVCodecContext::me_pre_cmp

motion estimation pre pass compare function.

encoding: set by user.
decoding: unused

Definition at line 1281 of file avcodec.h.

Referenced by encode(), ff_init_me(), ff_pre_estimate_p_frame_motion(), and new_video_stream().

int AVCodecContext::pre_dia_size

ME pre pass diamond size & shape.

encoding: set by user.
decoding: unused

Definition at line 1288 of file avcodec.h.

int AVCodecContext::me_subpel_quality

subpel ME quality.

encoding: set by user.
decoding: unused

Definition at line 1295 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), encode(), new_video_stream(), and qpel_motion_search().

enum PixelFormat(* AVCodecContext::get_format)(struct AVCodecContext *s, const enum PixelFormat *fmt)

callback to negotiate the pixelFormat.

Parameters:

fmt

is the list of formats which are supported by the codec, its terminated by -1 as 0 is a valid format, the formats are ordered by quality the first is allways the native one

Returns:

the choosen format

encoding: unused
decoding: set by user, if not set then the native format will always be choosen

Referenced by avcodec_get_context_defaults(), decode_init(), and vcr2_init_sequence().

int AVCodecContext::dtg_active_format

DTG active format information (additionnal aspect ratio information only used in DVB MPEG2 transport streams). 0 if not set.

encoding: unused.
decoding: set by decoder

Definition at line 1316 of file avcodec.h.

Referenced by mpeg_decode_user_data().

int AVCodecContext::me_range

Maximum motion estimation search range in subpel units. if 0 then no limit

encoding: set by user.
decoding: unused.

Definition at line 1332 of file avcodec.h.

Referenced by encode(), ff_fix_long_mvs(), ff_fix_long_p_mvs(), ff_get_best_fcode(), and new_video_stream().

int AVCodecContext::intra_quant_bias

intra quantizer bias.

encoding: set by user.
decoding: unused

Definition at line 1339 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), encode(), and new_video_stream().

int AVCodecContext::inter_quant_bias

inter quantizer bias.

encoding: set by user.
decoding: unused

Definition at line 1347 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), encode(), and new_video_stream().

int AVCodecContext::color_table_id

color table ID.

encoding: unused.
decoding: which clrtable should be used for 8bit RGB images table have to be stored somewhere FIXME

Definition at line 1355 of file avcodec.h.

int AVCodecContext::internal_buffer_count

internal_buffer count. Don't touch, used by lavc default_get_buffer()

Definition at line 1361 of file avcodec.h.

Referenced by avcodec_default_free_buffers(), avcodec_default_get_buffer(), and avcodec_default_release_buffer().

void* AVCodecContext::internal_buffer

internal_buffers. Don't touch, used by lavc default_get_buffer()

Definition at line 1367 of file avcodec.h.

Referenced by avcodec_default_free_buffers(), avcodec_default_get_buffer(), and avcodec_default_release_buffer().

int AVCodecContext::global_quality

global quality for codecs which cannot change it per frame. this should be proportional to MPEG1/2/4 qscale.

encoding: set by user.
decoding: unused

Definition at line 1381 of file avcodec.h.

Referenced by encode_init(), new_video_stream(), and X264_init().

int AVCodecContext::coder_type

coder type

encoding: set by user.
decoding: unused

Definition at line 1390 of file avcodec.h.

Referenced by encode_init(), new_video_stream(), read_header(), write_header(), and X264_init().

int AVCodecContext::context_model

context model

encoding: set by user.
decoding: unused

Definition at line 1397 of file avcodec.h.

Referenced by encode_init(), encode_plane(), encode_rgb_frame(), and new_video_stream().

int AVCodecContext::slice_flags

slice flags

encoding: unused
decoding: set by user.

Definition at line 1404 of file avcodec.h.

Referenced by ff_draw_horiz_band().

int AVCodecContext::xvmc_acceleration

XVideo Motion Acceleration

encoding: forbidden
decoding: set by decoder

Definition at line 1414 of file avcodec.h.

Referenced by ff_er_frame_end(), mpeg_decode_mb(), mpeg_decode_slice(), mpeg_field_start(), MPV_decode_mb_internal(), MPV_frame_end(), slice_end(), and vcr2_init_sequence().

int AVCodecContext::mb_decision

macroblock decision mode

encoding: set by user.
decoding: unused

Definition at line 1421 of file avcodec.h.

Referenced by add_video_stream(), avcodec_string(), encode(), ff_estimate_b_frame_motion(), ff_estimate_p_frame_motion(), ff_xvid_encode_init(), new_video_stream(), and parse_ffconfig().

uint16_t* AVCodecContext::intra_matrix

custom intra quantization matrix

encoding: set by user, can be NULL
decoding: set by lavc

Definition at line 1431 of file avcodec.h.

Referenced by ff_xvid_encode_init(), and new_video_stream().

uint16_t* AVCodecContext::inter_matrix

custom inter quantization matrix

encoding: set by user, can be NULL
decoding: set by lavc

Definition at line 1438 of file avcodec.h.

Referenced by ff_xvid_encode_init(), and new_video_stream().

unsigned int AVCodecContext::stream_codec_tag

fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). this is used to workaround some encoder bugs

encoding: unused
decoding: set by user, will be converted to upper case by lavc during init

Definition at line 1446 of file avcodec.h.

Referenced by ff_h263_decode_frame(), and MPV_common_init().

int AVCodecContext::scenechange_threshold

scene change detection threshold. 0 is default, larger means fewer detected scene changes

encoding: set by user.
decoding: unused

Definition at line 1454 of file avcodec.h.

Referenced by encode_frame(), and new_video_stream().

int AVCodecContext::lmin

minimum lagrange multipler

encoding: set by user.
decoding: unused

Definition at line 1461 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), encode(), get_qminmax(), and new_video_stream().

int AVCodecContext::lmax

maximum lagrange multipler

encoding: set by user.
decoding: unused

Definition at line 1468 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), encode(), get_qminmax(), and new_video_stream().

struct AVPaletteControl* AVCodecContext::palctrl [read]

Palette control structure

encoding: ??? (no palette-enabled encoder yet)
decoding: set by user.

Definition at line 1475 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), cinepak_decode_frame(), cinepak_decode_init(), decode_frame(), decode_init(), idcin_decode_frame(), ipvideo_decode_frame(), ipvideo_decode_init(), ipvideo_decode_opcodes(), msrle_decode_pal4(), msrle_decode_pal8(), msvideo1_decode_8bit(), msvideo1_decode_init(), qtrle_decode_frame(), smc_decode_stream(), xan_decode_frame(), xan_decode_init(), and xan_wc3_decode_frame().

int AVCodecContext::noise_reduction

noise reduction strength

encoding: set by user.
decoding: unused

Definition at line 1482 of file avcodec.h.

Referenced by init_duplicate_context(), MPV_common_init(), new_video_stream(), and update_noise_reduction().

int(* AVCodecContext::reget_buffer)(struct AVCodecContext *c, AVFrame *pic)

called at the beginning of a frame to get cr buffer for it. buffer type (size, hints) must be the same. lavc won't check it. lavc will pass previous buffer in pic, function should return same buffer or new buffer with old frame "painted" into it. if pic.data[0] == NULL must behave like get_buffer().

encoding: unused
decoding: set by lavc, user can override

Referenced by aasc_decode_frame(), avcodec_get_context_defaults(), cinepak_decode_frame(), decode_frame(), flic_decode_frame(), ir2_decode_frame(), msrle_decode_frame(), msvideo1_decode_frame(), qtrle_decode_frame(), rpza_decode_frame(), and smc_decode_frame().

int AVCodecContext::rc_initial_buffer_occupancy

number of bits which should be loaded into the rc buffer before decoding starts

encoding: set by user.
decoding: unused

Definition at line 1500 of file avcodec.h.

Referenced by ff_rate_control_init(), and new_video_stream().

int AVCodecContext::inter_threshold

encoding: set by user.
decoding: unused

Definition at line 1507 of file avcodec.h.

int AVCodecContext::flags2

CODEC_FLAG2_*.

encoding: set by user.
decoding: set by user.

Definition at line 1514 of file avcodec.h.

Referenced by av_parser_change(), decode_frame(), encode_422_bitstream(), encode_frame(), encode_gray_bitstream(), ff_h263_decode_frame(), h261_decode_frame(), mpeg_decode_init(), MPV_common_init(), new_video_stream(), stream_component_open(), svq3_decode_frame(), and vc9_decode_frame().

int AVCodecContext::error_rate

simulates errors in the bitstream to test error concealment.

encoding: set by user.
decoding: unused.

Definition at line 1521 of file avcodec.h.

Referenced by new_video_stream().

int AVCodecContext::antialias_algo

MP3 antialias algorithm, see FF_AA_* below.

encoding: unused
decoding: set by user

Definition at line 1528 of file avcodec.h.

Referenced by decode_init().

int AVCodecContext::quantizer_noise_shaping

Quantizer noise shaping.

encoding: set by user
decoding: unused

Definition at line 1538 of file avcodec.h.

Referenced by new_video_stream().

int AVCodecContext::thread_count

Thread count. is used to decide how many independant tasks should be passed to execute()

encoding: set by user
decoding: set by user

Definition at line 1546 of file avcodec.h.

Referenced by avcodec_get_context_defaults(), avcodec_thread_execute(), avcodec_thread_free(), avcodec_thread_init(), encode(), ff_er_add_slice(), mpeg_decode_frame(), MPV_common_end(), MPV_common_init(), new_audio_stream(), new_video_stream(), opt_input_file(), quicktime_new_ffmpeg(), stream_component_open(), worker(), and X264_init().

int(* AVCodecContext::execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count)

the codec may call this to execute several independant things. it will return only after finishing all tasks, the user may replace this with some multithreaded implementation, the default implementation will execute the parts serially

Parameters:

count

the number of things to execute