FFmpeg
Functions
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 "codec_internal.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 encode_make_refcounted (AVCodecContext *avctx, AVPacket *avpkt)
 
static int pad_last_frame (AVCodecContext *s, AVFrame *frame, const AVFrame *src, int out_samples)
 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...
 
int ff_encode_encode_cb (AVCodecContext *avctx, AVPacket *avpkt, AVFrame *frame, int *got_packet)
 
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_generate_icc_profile (av_unused AVCodecContext *c, av_unused AVFrame *f)
 
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...
 
static int encode_preinit_video (AVCodecContext *avctx)
 
static int encode_preinit_audio (AVCodecContext *avctx)
 
int ff_encode_preinit (AVCodecContext *avctx)
 
int ff_encode_alloc_frame (AVCodecContext *avctx, AVFrame *frame)
 Allocate buffers for a frame. More...
 
int ff_encode_receive_frame (AVCodecContext *avctx, AVFrame *frame)
 avcodec_receive_frame() implementation for encoders. More...
 

Function Documentation

◆ ff_alloc_packet()

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

Check AVPacket size and allocate data.

Encoders of type FF_CODEC_CB_TYPE_ENCODE can use this as a convenience to obtain a big enough buffer for the encoded bitstream.

Parameters
avctxthe AVCodecContext of the encoder
avpktThe 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.
sizean upper bound of the size of the packet to encode
Returns
non negative on success, negative error code on failure

Definition at line 35 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(), qoi_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 79 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(), dfpwm_enc_frame(), dnxhd_encode_picture(), dvvideo_encode_frame(), encode_apng(), encode_frame(), encode_make_refcounted(), encode_nals(), encode_picture_ls(), encode_yuv422p10(), ff_ac3_encode_frame_common_end(), fits_encode_frame(), flac_encode_frame(), g723_1_encode_frame(), hdr_encode_frame(), libcodec2_encode(), libgsm_encode_frame(), libjxl_encode_frame(), libkvazaar_encode(), librav1e_receive_packet(), libshine_encode_frame(), libvorbis_encode_frame(), libwebp_anim_encode_frame(), libwebp_encode_frame(), libx265_encode_frame(), mediacodec_receive(), mf_sample_to_avpacket(), mp3lame_encode_frame(), pam_encode_frame(), pcm_bluray_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(), vbn_encode(), vtenc_cm_to_avpacket(), wbmp_encode_frame(), xavs2_encode_frame(), XAVS_frame(), xface_encode_frame(), xwd_encode_frame(), y41p_encode_frame(), and yuv4_encode_frame().

◆ encode_make_refcounted()

static int encode_make_refcounted ( AVCodecContext avctx,
AVPacket avpkt 
)
static

Definition at line 110 of file encode.c.

Referenced by ff_encode_encode_cb().

◆ pad_last_frame()

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

Pad last frame with silence.

Definition at line 130 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
frameAn 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 178 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(), mediacodec_encode(), mf_receive_packet(), and v4l2_receive_packet().

◆ ff_encode_encode_cb()

int ff_encode_encode_cb ( AVCodecContext avctx,
AVPacket avpkt,
AVFrame frame,
int got_packet 
)

Definition at line 193 of file encode.c.

Referenced by encode_simple_internal(), and worker().

◆ encode_simple_internal()

static int encode_simple_internal ( AVCodecContext avctx,
AVPacket avpkt 
)
static

Definition at line 242 of file encode.c.

Referenced by encode_simple_receive_packet().

◆ encode_simple_receive_packet()

static int encode_simple_receive_packet ( AVCodecContext avctx,
AVPacket avpkt 
)
static

Definition at line 290 of file encode.c.

Referenced by encode_receive_packet_internal().

◆ encode_receive_packet_internal()

static int encode_receive_packet_internal ( AVCodecContext avctx,
AVPacket avpkt 
)
static

Definition at line 303 of file encode.c.

Referenced by avcodec_receive_packet(), and avcodec_send_frame().

◆ encode_generate_icc_profile()

static int encode_generate_icc_profile ( av_unused AVCodecContext c,
av_unused AVFrame f 
)
static

Definition at line 380 of file encode.c.

Referenced by encode_send_frame_internal().

◆ encode_send_frame_internal()

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

Definition at line 386 of file encode.c.

Referenced by avcodec_send_frame().

◆ encode_preinit_video()

static int encode_preinit_video ( AVCodecContext avctx)
static

Definition at line 502 of file encode.c.

Referenced by ff_encode_preinit().

◆ encode_preinit_audio()

static int encode_preinit_audio ( AVCodecContext avctx)
static

Definition at line 569 of file encode.c.

Referenced by ff_encode_preinit().

◆ ff_encode_preinit()

int ff_encode_preinit ( AVCodecContext avctx)

Definition at line 627 of file encode.c.

Referenced by avcodec_open2().

◆ ff_encode_alloc_frame()

int ff_encode_alloc_frame ( AVCodecContext avctx,
AVFrame frame 
)

Allocate buffers for a frame.

Encoder equivalent to ff_get_buffer().

Definition at line 682 of file encode.c.

Referenced by alloc_frame_buffer(), ff_snow_get_buffer(), librav1e_receive_packet(), roq_encode_frame(), and svq1_encode_frame().

◆ ff_encode_receive_frame()

int ff_encode_receive_frame ( AVCodecContext avctx,
AVFrame frame 
)

avcodec_receive_frame() implementation for encoders.

Definition at line 716 of file encode.c.

Referenced by avcodec_receive_frame().