#include <avcodec.h>

Data Fields
const char *	name
	Name of the codec implementation. More...

const char *	long_name
	Descriptive name for the codec, meant to be more human readable than name. More...

enum AVMediaType	type

enum AVCodecID	id

int	capabilities
	Codec capabilities. More...

const AVRational *	supported_framerates
	array of supported framerates, or NULL if any, array is terminated by {0,0} More...

enum AVPixelFormat *	pix_fmts
	array of supported pixel formats, or NULL if unknown, array is terminated by -1 More...

const int *	supported_samplerates
	array of supported audio samplerates, or NULL if unknown, array is terminated by 0 More...

enum AVSampleFormat *	sample_fmts
	array of supported sample formats, or NULL if unknown, array is terminated by -1 More...

const uint64_t *	channel_layouts
	array of support channel layouts, or NULL if unknown. array is terminated by 0 More...

uint8_t	max_lowres
	maximum value for lowres supported by the decoder More...

const AVClass *	priv_class
	AVClass for the private context. More...

const AVProfile *	profiles
	array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN} More...

int	priv_data_size

struct AVCodec *	next

const AVCodecDefault *	defaults
	Private codec-specific defaults. More...

void(*	init_static_data )(struct AVCodec *codec)
	Initialize codec static data, called from avcodec_register(). More...

int(*	init )(AVCodecContext *)

int(*	encode_sub )(AVCodecContext , uint8_t buf, int buf_size, const struct AVSubtitle *sub)

int(*	encode2 )(AVCodecContext avctx, AVPacket avpkt, const AVFrame frame, int got_packet_ptr)
	Encode data to an AVPacket. More...

int(*	decode )(AVCodecContext , void outdata, int outdata_size, AVPacket avpkt)

int(*	close )(AVCodecContext *)

int(*	send_frame )(AVCodecContext avctx, const AVFrame frame)
	Decode/encode API with decoupled packet/frame dataflow. More...

int(*	send_packet )(AVCodecContext avctx, const AVPacket avpkt)

int(*	receive_frame )(AVCodecContext avctx, AVFrame frame)

int(*	receive_packet )(AVCodecContext avctx, AVPacket avpkt)

void(*	flush )(AVCodecContext *)
	Flush buffers. More...

int	caps_internal
	Internal codec capabilities. More...

Frame-level threading support functions
int(*	init_thread_copy )(AVCodecContext *)
	If defined, called on thread contexts when they are created. More...

int(*	update_thread_context )(AVCodecContext dst, const AVCodecContext src)
	Copy necessary context variables from a previous thread context to the current one. More...

Detailed Description

AVCodec.

Examples:: decode_audio.c, decode_video.c, demuxing_decoding.c, encode_audio.c, encode_video.c, filtering_audio.c, filtering_video.c, muxing.c, qsvdec.c, transcode_aac.c, and transcoding.c.

Definition at line 3681 of file avcodec.h.

Field Documentation

const char* AVCodec::name

Name of the codec implementation.

The name is globally unique among encoders and among decoders (but an encoder and a decoder can share the same name). This is the primary way to find a codec from the user perspective.

Definition at line 3688 of file avcodec.h.

Referenced by avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), avcodec_get_name(), avcodec_open2(), avcodec_string(), choose_pixel_fmt(), choose_sample_fmt(), compute_status(), context_to_name(), dshow_cycle_formats(), ffserver_opt_preset(), find_codec_or_die(), init(), main(), mpeg12_class(), print_codec(), print_codecs(), print_codecs_for_id(), print_stream_params(), read_ffserver_streams(), show_codecs(), test_copy(), test_copy_print_codec(), transcode_init(), and video_decode().

const char* AVCodec::long_name

Descriptive name for the codec, meant to be more human readable than name.

You should use the NULL_IF_CONFIG_SMALL() macro to define it.

Definition at line 3693 of file avcodec.h.

Referenced by print_codec(), and print_codecs().

enum AVMediaType AVCodec::type

Definition at line 3694 of file avcodec.h.

Referenced by avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), avcodec_open2(), ff_init_buffer_info(), ffserver_set_codec(), find_codec_or_die(), init_context_defaults(), main(), print_codec(), and read_ffserver_streams().

enum AVCodecID AVCodec::id

Examples:: encode_video.c.

Definition at line 3695 of file avcodec.h.

Referenced by a64multi_encode_init(), adpcm_compress_trellis(), adpcm_decode_frame(), adpcm_decode_init(), adpcm_encode_frame(), adpcm_encode_init(), avcodec_open2(), choose_decoder(), cuvid_decode_init(), decode_end(), decode_frame(), decode_init(), do_video_out(), dpcm_decode_frame(), dpcm_decode_init(), eightsvx_decode_init(), encode_init(), ff_h263_decode_init(), ff_mjpeg_decode_init(), ff_mjpeg_init_hvsample(), ff_mpv_decode_init(), ff_mpv_encode_init(), ff_print_debug_info2(), ff_wma_init(), ffserver_set_codec(), find_encdec(), find_probe_decoder(), flush_encoders(), get_nb_samples(), h263_get_format(), init(), init_context_defaults(), main(), mpeg_decode_init(), next_codec_for_id(), nvenc_codec_specific_pic_params(), nvenc_setup_codec_config(), nvenc_setup_device(), nvenc_setup_encoder(), omx_component_init(), omx_encode_init(), open_input_file(), open_output_file(), pcm_decode_frame(), pcm_encode_frame(), pcm_encode_init(), process_output_surface(), receive_frame(), stream_component_open(), transcode_init(), v4l2_read_header(), vaapi_mpeg4_start_frame(), vdpau_mpeg4_start_frame(), vp6_decode_init(), vp78_decode_init(), and wma_decode_init().

int AVCodec::capabilities

Codec capabilities.

see AV_CODEC_CAP_*

Examples:: decode_video.c, muxing.c, and transcoding.c.

Definition at line 3700 of file avcodec.h.

Referenced by apply_param_change(), avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), avcodec_encode_audio2(), avcodec_encode_video2(), avcodec_open2(), avcodec_receive_frame(), avcodec_receive_packet(), avcodec_send_frame(), avcodec_send_packet(), choose_sample_fmt(), decode_nal_units(), do_video_out(), er_supported(), ff_frame_thread_encoder_init(), ff_get_format(), ff_h263_decode_frame(), ff_h264_execute_decode_slices(), ff_h264_field_end(), ff_mpeg_framesize_alloc(), ff_mpv_frame_start(), ff_print_debug_info2(), ff_vp9_init_static(), find_encdec(), find_probe_decoder(), h264_frame_start(), h264_slice_header_init(), libopenjpeg_static_init(), main(), open_audio(), print_codec(), print_codecs(), reap_filters(), stream_component_open(), submit_packet(), try_decode_frame(), validate_thread_parameters(), and vc1_decode_frame().

const AVRational* AVCodec::supported_framerates

array of supported framerates, or NULL if any, array is terminated by {0,0}

Definition at line 3701 of file avcodec.h.

Referenced by print_codec().

enum AVPixelFormat* AVCodec::pix_fmts

array of supported pixel formats, or NULL if unknown, array is terminated by -1

Examples:: transcoding.c.

Definition at line 3702 of file avcodec.h.

Referenced by avcodec_open2(), choose_pixel_fmt(), ff_vp9_init_static(), ffmmal_init_decoder(), get_pixel_format(), h263_get_format(), libx265_encode_init_csp(), open_output_file(), vc1_decode_init(), vdadec_init(), and X264_init_static().

const int* AVCodec::supported_samplerates

array of supported audio samplerates, or NULL if unknown, array is terminated by 0

Examples:: encode_audio.c.

Definition at line 3703 of file avcodec.h.

Referenced by avcodec_open2(), and select_sample_rate().

enum AVSampleFormat* AVCodec::sample_fmts

array of supported sample formats, or NULL if unknown, array is terminated by -1

Examples:: encode_audio.c, transcode_aac.c, and transcoding.c.

Definition at line 3704 of file avcodec.h.

Referenced by avcodec_open2(), check_sample_fmt(), choose_sample_fmt(), main(), open_output_file(), and pcm_decode_init().

const uint64_t* AVCodec::channel_layouts

array of support channel layouts, or NULL if unknown. array is terminated by 0

Examples:: encode_audio.c.

Definition at line 3705 of file avcodec.h.

Referenced by avcodec_open2(), and select_channel_layout().

uint8_t AVCodec::max_lowres

maximum value for lowres supported by the decoder

Definition at line 3706 of file avcodec.h.

Referenced by av_codec_get_max_lowres(), and avcodec_open2().

const AVClass* AVCodec::priv_class

AVClass for the private context.

Definition at line 3707 of file avcodec.h.

Referenced by avcodec_close(), avcodec_copy_context(), avcodec_open2(), codec_child_class_next(), codec_child_next(), ff_frame_thread_free(), ffm2_read_header(), ffm_write_recommended_config(), filter_codec_opts(), init_context_defaults(), print_codec(), show_codec_opts(), show_stream(), test_copy(), and test_copy_print_codec().

const AVProfile* AVCodec::profiles

array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}

Definition at line 3708 of file avcodec.h.

Referenced by av_get_profile_name().

int AVCodec::priv_data_size

Definition at line 3717 of file avcodec.h.

Referenced by avcodec_open2(), ff_frame_thread_encoder_init(), ff_frame_thread_init(), ff_mjpeg_encode_picture_header(), ffm2_read_header(), ffm_write_recommended_config(), init_context_defaults(), test_copy(), and test_copy_print_codec().

struct AVCodec* AVCodec::next

Definition at line 3718 of file avcodec.h.

Referenced by av_codec_next(), avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), avcodec_register(), and find_encdec().

int(* AVCodec::init_thread_copy)(AVCodecContext *)

If defined, called on thread contexts when they are created.

If the codec allocates writable tables in init(), re-allocate them here. priv_data will be set to a copy of the original.

Definition at line 3728 of file avcodec.h.

Referenced by ff_frame_thread_init().

int(* AVCodec::update_thread_context)(AVCodecContext *dst, const AVCodecContext *src)

Copy necessary context variables from a previous thread context to the current one.

If not defined, the next thread will start automatically; otherwise, the codec must call ff_thread_finish_setup().

dst and src will (rarely) point to the same context, in which case memcpy should be skipped.

Definition at line 3736 of file avcodec.h.

Referenced by ff_thread_can_start_frame(), frame_worker_thread(), hap_decode(), thread_get_buffer_internal(), update_context_from_thread(), and vp78_decode_frame().

const AVCodecDefault* AVCodec::defaults

Private codec-specific defaults.

Definition at line 3742 of file avcodec.h.

Referenced by init_context_defaults(), and init_output_stream().

void(* AVCodec::init_static_data)(struct AVCodec *codec)

Initialize codec static data, called from avcodec_register().

Definition at line 3747 of file avcodec.h.

Referenced by avcodec_register().

int(* AVCodec::init)(AVCodecContext *)

Definition at line 3749 of file avcodec.h.

Referenced by avcodec_open2(), ff_frame_thread_init(), ff_lock_avcodec(), ff_unlock_avcodec(), and vdadec_init().

int(* AVCodec::encode_sub)(AVCodecContext *, uint8_t *buf, int buf_size, const struct AVSubtitle *sub)

Definition at line 3750 of file avcodec.h.

Referenced by av_codec_is_encoder(), and avcodec_encode_subtitle().

int(* AVCodec::encode2)(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)

Encode data to an AVPacket.

Parameters

	avctx	codec context
	avpkt	output AVPacket (may contain a user-provided buffer)
[in]	frame	AVFrame containing the raw data to be encoded
[out]	got_packet_ptr	encoder sets to 0 or 1 to indicate that a non-empty packet was returned in avpkt.

Returns: 0 on success, negative error code on failure

Definition at line 3762 of file avcodec.h.

Referenced by av_codec_is_encoder(), avcodec_encode_audio2(), and avcodec_encode_video2().

int(* AVCodec::decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt)

Definition at line 3764 of file avcodec.h.

Referenced by av_codec_is_decoder(), avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), frame_worker_thread(), get_category(), and vdadec_decode().

int(* AVCodec::close)(AVCodecContext *)

Definition at line 3765 of file avcodec.h.

Referenced by avcodec_close(), ff_frame_thread_free(), and vdadec_close().

int(* AVCodec::send_frame)(AVCodecContext *avctx, const AVFrame *frame)

Decode/encode API with decoupled packet/frame dataflow.

The API is the same as the avcodec_ prefixed APIs (avcodec_send_frame() etc.), except that:

never called if the codec is closed or the wrong type,
AVPacket parameter change side data is applied right before calling AVCodec->send_packet,
if AV_CODEC_CAP_DELAY is not set, drain packets or frames are never sent,
only one drain packet is ever passed down (until the next flush()),
a drain AVPacket is always NULL (no need to check for avpkt->size).

Definition at line 3777 of file avcodec.h.

Referenced by av_codec_is_encoder(), and avcodec_send_frame().

int(* AVCodec::send_packet)(AVCodecContext *avctx, const AVPacket *avpkt)

Definition at line 3778 of file avcodec.h.

Referenced by av_codec_is_decoder(), and avcodec_send_packet().

int(* AVCodec::receive_frame)(AVCodecContext *avctx, AVFrame *frame)

Definition at line 3779 of file avcodec.h.

Referenced by avcodec_receive_frame().

int(* AVCodec::receive_packet)(AVCodecContext *avctx, AVPacket *avpkt)

Definition at line 3780 of file avcodec.h.

Referenced by avcodec_receive_packet().

void(* AVCodec::flush)(AVCodecContext *)