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Data Fields
AVCodec Struct Reference

AVCodec. More...

#include <avcodec.h>

Data Fields

const char * name
 Name of the codec implementation.
 
const char * long_name
 Descriptive name for the codec, meant to be more human readable than name.
 
enum AVMediaType type
 
enum AVCodecID id
 
int capabilities
 Codec capabilities.
 
const AVRationalsupported_framerates
 array of supported framerates, or NULL if any, array is terminated by {0,0}
 
enum AVPixelFormatpix_fmts
 array of supported pixel formats, or NULL if unknown, array is terminated by -1
 
const int * supported_samplerates
 array of supported audio samplerates, or NULL if unknown, array is terminated by 0
 
enum AVSampleFormatsample_fmts
 array of supported sample formats, or NULL if unknown, array is terminated by -1
 
const uint64_t * channel_layouts
 array of support channel layouts, or NULL if unknown. array is terminated by 0
 
uint8_t max_lowres
 maximum value for lowres supported by the decoder, no direct access, use av_codec_get_max_lowres()
 
const AVClasspriv_class
 AVClass for the private context.
 
const AVProfileprofiles
 array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
 
int priv_data_size
 
struct AVCodecnext
 
const AVCodecDefaultdefaults
 Private codec-specific defaults.
 
void(* init_static_data )(struct AVCodec *codec)
 Initialize codec static data, called from avcodec_register().
 
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.
 
int(* decode )(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt)
 
int(* close )(AVCodecContext *)
 
void(* flush )(AVCodecContext *)
 Flush buffers.
 
Frame-level threading support functions
int(* init_thread_copy )(AVCodecContext *)
 If defined, called on thread contexts when they are created.
 
int(* update_thread_context )(AVCodecContext *dst, const AVCodecContext *src)
 Copy necessary context variables from a previous thread context to the current one.
 

Detailed Description

AVCodec.

Examples:
decoding_encoding.c, demuxing_decoding.c, filtering_audio.c, filtering_video.c, muxing.c, transcode_aac.c, and transcoding.c.

Definition at line 3091 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 3098 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(), list_formats(), mpeg12_class(), new_output_stream(), print_codec(), print_codecs(), print_codecs_for_id(), set_encoder_id(), show_codecs(), show_stream(), transcode_init(), and write_frame().

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 3103 of file avcodec.h.

Referenced by print_codec(), print_codecs(), and show_stream().

enum AVMediaType AVCodec::type
enum AVCodecID AVCodec::id
int AVCodec::capabilities
const AVRational* AVCodec::supported_framerates

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

Definition at line 3111 of file avcodec.h.

Referenced by print_codec(), and transcode_init().

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 3112 of file avcodec.h.

Referenced by avcodec_open2(), choose_pix_fmts(), choose_pixel_fmt(), ff_h263_decode_init(), get_pixel_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:
decoding_encoding.c.

Definition at line 3113 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:
decoding_encoding.c, and transcoding.c.

Definition at line 3114 of file avcodec.h.

Referenced by avcodec_open2(), check_sample_fmt(), choose_sample_fmt(), 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:
decoding_encoding.c.

Definition at line 3115 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, no direct access, use av_codec_get_max_lowres()

Definition at line 3117 of file avcodec.h.

Referenced by avcodec_open2().

const AVClass* AVCodec::priv_class
const AVProfile* AVCodec::profiles

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

Definition at line 3120 of file avcodec.h.

Referenced by av_get_profile_name().

int AVCodec::priv_data_size
struct AVCodec* AVCodec::next
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 3140 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 3148 of file avcodec.h.

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

const AVCodecDefault* AVCodec::defaults

Private codec-specific defaults.

Definition at line 3154 of file avcodec.h.

Referenced by avcodec_get_context_defaults3().

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

Initialize codec static data, called from avcodec_register().

Definition at line 3159 of file avcodec.h.

Referenced by avcodec_register().

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

Definition at line 3161 of file avcodec.h.

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

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

Definition at line 3162 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
avctxcodec context
avpktoutput AVPacket (may contain a user-provided buffer)
[in]frameAVFrame containing the raw data to be encoded
[out]got_packet_ptrencoder 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 3174 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)
int(* AVCodec::close)(AVCodecContext *)

Definition at line 3177 of file avcodec.h.

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

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

Flush buffers.

Will be called when seeking

Definition at line 3182 of file avcodec.h.

Referenced by avcodec_flush_buffers(), ff_thread_flush(), and vdadec_flush().


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