FFmpeg: libavcodec/encode.c File Reference

FFmpeg

libavcodec

encode.c File Reference

#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/frame.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/samplefmt.h"
#include "avcodec.h"
#include "encode.h"
#include "frame_thread_encoder.h"
#include "internal.h"

Go to the source code of this file.

Functions

int ff_alloc_packet (AVCodecContext *avctx, AVPacket *avpkt, int64_t size)

Check AVPacket size and allocate data. More...

int avcodec_default_get_encode_buffer (AVCodecContext *avctx, AVPacket *avpkt, int flags)

The default callback for AVCodecContext.get_encode_buffer(). More...

int ff_get_encode_buffer (AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int flags)

Get a buffer for a packet. More...

static int pad_last_frame (AVCodecContext *s, AVFrame *frame, const AVFrame *src)

Pad last frame with silence. More...

int avcodec_encode_subtitle (AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVSubtitle *sub)

int ff_encode_get_frame (AVCodecContext *avctx, AVFrame *frame)

Called by encoders to get the next frame for encoding. More...

static int encode_simple_internal (AVCodecContext *avctx, AVPacket *avpkt)

static int encode_simple_receive_packet (AVCodecContext *avctx, AVPacket *avpkt)

static int encode_receive_packet_internal (AVCodecContext *avctx, AVPacket *avpkt)

static int encode_send_frame_internal (AVCodecContext *avctx, const AVFrame *src)

int attribute_align_arg avcodec_send_frame (AVCodecContext *avctx, const AVFrame *frame)

Supply a raw video or audio frame to the encoder. More...

int attribute_align_arg avcodec_receive_packet (AVCodecContext *avctx, AVPacket *avpkt)

Read encoded data from the encoder. More...

int ff_encode_preinit (AVCodecContext *avctx)

Function Documentation

◆ ff_alloc_packet()

int ff_alloc_packet ( AVCodecContext * avctx,

AVPacket * avpkt,

int64_t size

)

Check AVPacket size and allocate data.

Encoders supporting AVCodec.encode2() can use this as a convenience to obtain a big enough buffer for the encoded bitstream.

Parameters: avctx the AVCodecContext of the encoder

avpkt The AVPacket: on success, avpkt->data will point to a buffer of size at least size; the packet will not be refcounted. This packet must be initially blank.

size an upper bound of the size of the packet to encode

Returns: non negative on success, negative error code on failure

Definition at line 34 of file encode.c.

Referenced by aac_encode_frame(), alac_encode_frame(), amr_wb_encode_frame(), cfhd_encode_frame(), cinepak_encode_frame(), encode_frame(), encode_png(), encode_superframe(), ff_mpv_encode_picture(), ffat_encode(), flashsv2_encode_frame(), flashsv_encode_frame(), gif_encode_frame(), hap_encode(), ilbc_encode_frame(), libopenjpeg_encode_frame(), libopus_encode(), ljpeg_encode_frame(), magy_encode_frame(), mlp_encode_frame(), MPA_encode_frame(), opus_encode_frame(), pcx_encode_frame(), prores_encode_frame(), qtrle_encode_frame(), roq_encode_frame(), rpza_encode_frame(), smc_encode_frame(), sunrast_encode_frame(), svq1_encode_frame(), targa_encode_frame(), tta_encode_frame(), twolame_encode_frame(), utvideo_encode_frame(), vorbis_encode_frame(), wavpack_encode_frame(), xbm_encode_frame(), and xvid_encode_frame().

◆ ff_get_encode_buffer()

int ff_get_encode_buffer ( AVCodecContext * avctx,

AVPacket * avpkt,

int64_t size,

int flags

)

Get a buffer for a packet.

This is a wrapper around AVCodecContext.get_encode_buffer() and should be used instead calling get_encode_buffer() directly.

Definition at line 78 of file encode.c.

Referenced by a64multi_encode_frame(), adx_encode_frame(), amf_copy_buffer(), aptx_encode_frame(), avui_encode_frame(), bmp_encode_frame(), cng_encode_frame(), dnxhd_encode_picture(), dvvideo_encode_frame(), encode_apng(), encode_frame(), encode_nals(), encode_picture_ls(), encode_yuv422p10(), ff_ac3_encode_frame_common_end(), fits_encode_frame(), flac_encode_frame(), g723_1_encode_frame(), libcodec2_encode(), libgsm_encode_frame(), libkvazaar_encode(), librav1e_receive_packet(), libshine_encode_frame(), libvorbis_encode_frame(), libwebp_anim_encode_frame(), libwebp_encode_frame(), libx265_encode_frame(), mf_sample_to_avpacket(), mp3lame_encode_frame(), pam_encode_frame(), pcm_dvd_encode_frame(), pcm_encode_frame(), pnm_encode_frame(), process_output_surface(), ra144_encode_frame(), raw_encode(), roq_dpcm_encode_frame(), s302m_encode2_frame(), sbc_encode_frame(), storeframe(), svc_encode_frame(), v308_encode_frame(), v408_encode_frame(), v410_encode_frame(), vaapi_encode_output(), vtenc_cm_to_avpacket(), xavs2_encode_frame(), XAVS_frame(), xface_encode_frame(), xwd_encode_frame(), y41p_encode_frame(), and yuv4_encode_frame().

◆ pad_last_frame()

static int pad_last_frame ( AVCodecContext * s,

AVFrame * frame,

const AVFrame * src

)

static

Pad last frame with silence.

Definition at line 112 of file encode.c.

Referenced by encode_send_frame_internal().

◆ ff_encode_get_frame()

int ff_encode_get_frame ( AVCodecContext * avctx,

AVFrame * frame

)

Called by encoders to get the next frame for encoding.

Parameters: frame An empty frame to be filled with data.

Returns: 0 if a new reference has been successfully written to frame AVERROR(EAGAIN) if no data is currently available AVERROR_EOF if end of stream has been reached, so no more data will be available

Definition at line 157 of file encode.c.

Referenced by eb_receive_packet(), encode_simple_internal(), ff_amf_receive_packet(), ff_nvenc_receive_packet(), ff_vaapi_encode_receive_packet(), librav1e_receive_packet(), mf_receive_packet(), and v4l2_receive_packet().