FFmpeg
Data Structures | Macros | Functions | Variables
decode.c File Reference
#include <stdint.h>
#include <string.h>
#include "config.h"
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/emms.h"
#include "libavutil/frame.h"
#include "libavutil/hwcontext.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/mastering_display_metadata.h"
#include "avcodec.h"
#include "avcodec_internal.h"
#include "bytestream.h"
#include "bsf.h"
#include "codec_desc.h"
#include "codec_internal.h"
#include "decode.h"
#include "hwaccel_internal.h"
#include "hwconfig.h"
#include "internal.h"
#include "packet_internal.h"
#include "refstruct.h"
#include "thread.h"

Go to the source code of this file.

Data Structures

struct  DecodeContext
 

Macros

#define UTF8_MAX_BYTES   4 /* 5 and 6 bytes sequences should not be used */
 

Functions

static DecodeContextdecode_ctx (AVCodecInternal *avci)
 
static int apply_param_change (AVCodecContext *avctx, const AVPacket *avpkt)
 
static int extract_packet_props (AVCodecInternal *avci, const AVPacket *pkt)
 
static int decode_bsfs_init (AVCodecContext *avctx)
 
static int decode_get_packet (AVCodecContext *avctx, AVPacket *pkt)
 
int ff_decode_get_packet (AVCodecContext *avctx, AVPacket *pkt)
 Called by decoders to get the next packet for decoding. More...
 
static int64_t guess_correct_pts (DecodeContext *dc, int64_t reordered_pts, int64_t dts)
 Attempt to guess proper monotonic timestamps for decoded video frames which might have incorrect times. More...
 
static int discard_samples (AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples)
 
static int decode_simple_internal (AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples)
 
static int detect_colorspace (av_unused AVCodecContext *c, av_unused AVFrame *f)
 
static int fill_frame_props (const AVCodecContext *avctx, AVFrame *frame)
 
static int decode_simple_receive_frame (AVCodecContext *avctx, AVFrame *frame)
 
static int decode_receive_frame_internal (AVCodecContext *avctx, AVFrame *frame)
 
int attribute_align_arg avcodec_send_packet (AVCodecContext *avctx, const AVPacket *avpkt)
 Supply raw packet data as input to a decoder. More...
 
static int apply_cropping (AVCodecContext *avctx, AVFrame *frame)
 
static int frame_validate (AVCodecContext *avctx, AVFrame *frame)
 
int ff_decode_receive_frame (AVCodecContext *avctx, AVFrame *frame)
 avcodec_receive_frame() implementation for decoders. More...
 
static void get_subtitle_defaults (AVSubtitle *sub)
 
static int recode_subtitle (AVCodecContext *avctx, const AVPacket **outpkt, const AVPacket *inpkt, AVPacket *buf_pkt)
 
static int utf8_check (const uint8_t *str)
 
int avcodec_decode_subtitle2 (AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, const AVPacket *avpkt)
 Decode a subtitle message. More...
 
enum AVPixelFormat avcodec_default_get_format (struct AVCodecContext *avctx, const enum AVPixelFormat *fmt)
 
int ff_decode_get_hw_frames_ctx (AVCodecContext *avctx, enum AVHWDeviceType dev_type)
 Make sure avctx.hw_frames_ctx is set. More...
 
int avcodec_get_hw_frames_parameters (AVCodecContext *avctx, AVBufferRef *device_ref, enum AVPixelFormat hw_pix_fmt, AVBufferRef **out_frames_ref)
 Create and return a AVHWFramesContext with values adequate for hardware decoding. More...
 
static int hwaccel_init (AVCodecContext *avctx, const FFHWAccel *hwaccel)
 
void ff_hwaccel_uninit (AVCodecContext *avctx)
 
int ff_get_format (AVCodecContext *avctx, const enum AVPixelFormat *fmt)
 Select the (possibly hardware accelerated) pixel format. More...
 
const AVPacketSideDataff_get_coded_side_data (const AVCodecContext *avctx, enum AVPacketSideDataType type)
 Get side data of the given type from a decoding context. More...
 
static int add_metadata_from_side_data (const AVPacket *avpkt, AVFrame *frame)
 
int ff_decode_frame_props_from_pkt (const AVCodecContext *avctx, AVFrame *frame, const AVPacket *pkt)
 Set various frame properties from the provided packet. More...
 
int ff_decode_frame_props (AVCodecContext *avctx, AVFrame *frame)
 Set various frame properties from the codec context / packet data. More...
 
static void validate_avframe_allocation (AVCodecContext *avctx, AVFrame *frame)
 
static void decode_data_free (void *opaque, uint8_t *data)
 
int ff_attach_decode_data (AVFrame *frame)
 
int ff_get_buffer (AVCodecContext *avctx, AVFrame *frame, int flags)
 Get a buffer for a frame. More...
 
static int reget_buffer_internal (AVCodecContext *avctx, AVFrame *frame, int flags)
 
int ff_reget_buffer (AVCodecContext *avctx, AVFrame *frame, int flags)
 Identical in function to ff_get_buffer(), except it reuses the existing buffer if available. More...
 
int ff_decode_preinit (AVCodecContext *avctx)
 Perform decoder initialization and validation. More...
 
static int side_data_pref (const AVCodecContext *avctx, AVFrame *frame, enum AVFrameSideDataType type)
 Check side data preference and clear existing side data from frame if needed. More...
 
int ff_frame_new_side_data (const AVCodecContext *avctx, AVFrame *frame, enum AVFrameSideDataType type, size_t size, AVFrameSideData **psd)
 Wrapper around av_frame_new_side_data, which rejects side data overridden by the demuxer. More...
 
int ff_frame_new_side_data_from_buf (const AVCodecContext *avctx, AVFrame *frame, enum AVFrameSideDataType type, AVBufferRef **buf, AVFrameSideData **psd)
 Similar to ff_frame_new_side_data, but using an existing buffer ref. More...
 
int ff_decode_mastering_display_new (const AVCodecContext *avctx, AVFrame *frame, AVMasteringDisplayMetadata **mdm)
 Wrapper around av_mastering_display_metadata_create_side_data(), which rejects side data overridden by the demuxer. More...
 
int ff_decode_content_light_new (const AVCodecContext *avctx, AVFrame *frame, AVContentLightMetadata **clm)
 Wrapper around av_content_light_metadata_create_side_data(), which rejects side data overridden by the demuxer. More...
 
int ff_copy_palette (void *dst, const AVPacket *src, void *logctx)
 Check whether the side-data of src contains a palette of size AVPALETTE_SIZE; if so, copy it to dst and return 1; else return 0. More...
 
int ff_hwaccel_frame_priv_alloc (AVCodecContext *avctx, void **hwaccel_picture_private)
 Allocate a hwaccel frame private data if the provided avctx uses a hwaccel method that needs it. More...
 
void ff_decode_flush_buffers (AVCodecContext *avctx)
 
AVCodecInternalff_decode_internal_alloc (void)
 

Variables

struct {
   enum AVPacketSideDataType   packet
 
   enum AVFrameSideDataType   frame
 
sd_global_map []
 

Macro Definition Documentation

◆ UTF8_MAX_BYTES

#define UTF8_MAX_BYTES   4 /* 5 and 6 bytes sequences should not be used */

Definition at line 848 of file decode.c.

Function Documentation

◆ decode_ctx()

static DecodeContext* decode_ctx ( AVCodecInternal avci)
static

◆ apply_param_change()

static int apply_param_change ( AVCodecContext avctx,
const AVPacket avpkt 
)
static

Definition at line 82 of file decode.c.

Referenced by decode_get_packet().

◆ extract_packet_props()

static int extract_packet_props ( AVCodecInternal avci,
const AVPacket pkt 
)
static

Definition at line 143 of file decode.c.

Referenced by decode_get_packet().

◆ decode_bsfs_init()

static int decode_bsfs_init ( AVCodecContext avctx)
static

Definition at line 158 of file decode.c.

Referenced by ff_decode_preinit().

◆ decode_get_packet()

static int decode_get_packet ( AVCodecContext avctx,
AVPacket pkt 
)
static

Definition at line 193 of file decode.c.

Referenced by ff_decode_get_packet().

◆ ff_decode_get_packet()

int ff_decode_get_packet ( AVCodecContext avctx,
AVPacket pkt 
)

Called by decoders to get the next packet for decoding.

Parameters
pktAn empty packet to be filled with data.
Returns
0 if a new reference has been successfully written to pkt AVERROR(EAGAIN) if no data is currently available AVERROR_EOF if and end of stream has been reached, so no more data will be available

Definition at line 220 of file decode.c.

Referenced by av1_receive_frame(), binkaudio_receive_frame(), cuvid_output_frame(), decode_simple_internal(), ffmmal_receive_frame(), libdav1d_receive_frame_internal(), libjxl_receive_frame(), libxevd_receive_frame(), mediacodec_receive_frame(), osq_receive_frame(), and v4l2_receive_frame().

◆ guess_correct_pts()

static int64_t guess_correct_pts ( DecodeContext dc,
int64_t  reordered_pts,
int64_t  dts 
)
static

Attempt to guess proper monotonic timestamps for decoded video frames which might have incorrect times.

Input timestamps may wrap around, in which case the output will as well.

Parameters
ptsthe pts field of the decoded AVPacket, as passed through AVFrame.pts
dtsthe dts field of the decoded AVPacket
Returns
one of the input values, may be AV_NOPTS_VALUE

Definition at line 255 of file decode.c.

Referenced by decode_receive_frame_internal().

◆ discard_samples()

static int discard_samples ( AVCodecContext avctx,
AVFrame frame,
int64_t *  discarded_samples 
)
static

Definition at line 281 of file decode.c.

Referenced by decode_receive_frame_internal(), and decode_simple_internal().

◆ decode_simple_internal()

static int decode_simple_internal ( AVCodecContext avctx,
AVFrame frame,
int64_t *  discarded_samples 
)
inlinestatic

Definition at line 379 of file decode.c.

Referenced by decode_simple_receive_frame().

◆ detect_colorspace()

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

Definition at line 532 of file decode.c.

Referenced by decode_receive_frame_internal().

◆ fill_frame_props()

static int fill_frame_props ( const AVCodecContext avctx,
AVFrame frame 
)
static

Definition at line 538 of file decode.c.

Referenced by decode_receive_frame_internal(), and ff_decode_frame_props().

◆ decode_simple_receive_frame()

static int decode_simple_receive_frame ( AVCodecContext avctx,
AVFrame frame 
)
static

Definition at line 571 of file decode.c.

Referenced by decode_receive_frame_internal().

◆ decode_receive_frame_internal()

static int decode_receive_frame_internal ( AVCodecContext avctx,
AVFrame frame 
)
static

Definition at line 587 of file decode.c.

Referenced by avcodec_send_packet(), and ff_decode_receive_frame().

◆ apply_cropping()

static int apply_cropping ( AVCodecContext avctx,
AVFrame frame 
)
static

Definition at line 707 of file decode.c.

Referenced by ff_decode_receive_frame().

◆ frame_validate()

static int frame_validate ( AVCodecContext avctx,
AVFrame frame 
)
static

Definition at line 735 of file decode.c.

Referenced by ff_decode_receive_frame().

◆ ff_decode_receive_frame()

int ff_decode_receive_frame ( AVCodecContext avctx,
AVFrame frame 
)

avcodec_receive_frame() implementation for decoders.

Definition at line 761 of file decode.c.

Referenced by avcodec_receive_frame().

◆ get_subtitle_defaults()

static void get_subtitle_defaults ( AVSubtitle sub)
static

Definition at line 842 of file decode.c.

Referenced by avcodec_decode_subtitle2().

◆ recode_subtitle()

static int recode_subtitle ( AVCodecContext avctx,
const AVPacket **  outpkt,
const AVPacket inpkt,
AVPacket buf_pkt 
)
static

Definition at line 849 of file decode.c.

Referenced by avcodec_decode_subtitle2().

◆ utf8_check()

static int utf8_check ( const uint8_t *  str)
static

Definition at line 910 of file decode.c.

Referenced by avcodec_decode_subtitle2().

◆ ff_decode_get_hw_frames_ctx()

int ff_decode_get_hw_frames_ctx ( AVCodecContext avctx,
enum AVHWDeviceType  dev_type 
)

Make sure avctx.hw_frames_ctx is set.

If it's not set, the function will try to allocate it from hw_device_ctx. If that is not possible, an error message is printed, and an error code is returned.

Definition at line 1063 of file decode.c.

Referenced by ff_d3d12va_decode_init(), ff_dxva2_decode_init(), ff_vaapi_decode_init(), ff_vdpau_common_init(), and ff_vk_decode_init().

◆ hwaccel_init()

static int hwaccel_init ( AVCodecContext avctx,
const FFHWAccel hwaccel 
)
static

Definition at line 1172 of file decode.c.

Referenced by ff_get_format().

◆ ff_hwaccel_uninit()

void ff_hwaccel_uninit ( AVCodecContext avctx)

◆ ff_get_format()

int ff_get_format ( AVCodecContext avctx,
const enum AVPixelFormat fmt 
)

Select the (possibly hardware accelerated) pixel format.

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

The list of pixel formats must contain at least one valid entry, and is terminated with AV_PIX_FMT_NONE. If it is possible to decode to software, the last entry in the list must be the most accurate software format. If it is not possible to decode to software, AVCodecContext.sw_pix_fmt must be set before calling this function.

Definition at line 1219 of file decode.c.

Referenced by cuvid_decode_init(), decode_frame_header(), ff_mediacodec_dec_init(), ff_mjpeg_decode_sof(), ffmmal_init_decoder(), get_format(), get_pixel_format(), h263_get_format(), mpeg_get_pixelformat(), qsv_decode_preinit(), update_size(), and vc1_get_format().

◆ ff_get_coded_side_data()

const AVPacketSideData* ff_get_coded_side_data ( const AVCodecContext avctx,
enum AVPacketSideDataType  type 
)

Get side data of the given type from a decoding context.

Definition at line 1357 of file decode.c.

Referenced by av1_decode_init(), ff_decode_frame_props(), hevc_decode_init(), and libdav1d_init().

◆ add_metadata_from_side_data()

static int add_metadata_from_side_data ( const AVPacket avpkt,
AVFrame frame 
)
static

Definition at line 1367 of file decode.c.

Referenced by ff_decode_frame_props_from_pkt().

◆ ff_decode_frame_props_from_pkt()

int ff_decode_frame_props_from_pkt ( const AVCodecContext avctx,
AVFrame frame,
const AVPacket pkt 
)

Set various frame properties from the provided packet.

Definition at line 1394 of file decode.c.

Referenced by ff_decode_frame_props(), libdav1d_receive_frame(), and libxevd_return_frame().

◆ ff_decode_frame_props()

int ff_decode_frame_props ( AVCodecContext avctx,
AVFrame frame 
)

◆ validate_avframe_allocation()

static void validate_avframe_allocation ( AVCodecContext avctx,
AVFrame frame 
)
static

Definition at line 1510 of file decode.c.

Referenced by ff_get_buffer().

◆ decode_data_free()

static void decode_data_free ( void *  opaque,
uint8_t *  data 
)
static

Definition at line 1531 of file decode.c.

Referenced by ff_attach_decode_data().

◆ ff_attach_decode_data()

int ff_attach_decode_data ( AVFrame frame)

◆ ff_get_buffer()

int ff_get_buffer ( AVCodecContext avctx,
AVFrame frame,
int  flags 
)

Get a buffer for a frame.

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

Definition at line 1568 of file decode.c.

Referenced by ac3_decode_frame(), adpcm_decode_frame(), adx_decode_frame(), alloc_frame(), amrnb_decode_frame(), amrwb_decode_frame(), aom_decode(), apac_decode(), ape_decode_frame(), aptx_decode_frame(), atrac1_decode_frame(), atrac3_decode_frame(), atrac3al_decode_frame(), atrac3p_decode_frame(), atrac9_decode_frame(), aura_decode_frame(), avui_decode_frame(), bfi_decode_frame(), binkaudio_receive_frame(), bmp_decode_frame(), bmv_aud_decode_frame(), bonk_decode(), cdg_decode_frame(), cdxl_decode_frame(), cinaudio_decode_frame(), cmv_decode_frame(), cng_decode_frame(), cook_decode_frame(), copy_output(), cuvid_output_frame(), cyuv_decode_frame(), dds_decode(), decode_frame(), decode_pic(), decode_tag(), dfa_decode_frame(), dfpwm_dec_frame(), dpcm_decode_frame(), dss_sp_decode_frame(), eightsvx_decode_frame(), escape124_decode_frame(), escape130_decode_frame(), evrc_decode_frame(), execute_code(), fastaudio_decode(), fdk_aac_decode_frame(), ff_dca_lbr_filter_frame(), ff_dca_xll_filter_frame(), ff_ivi_decode_frame(), ff_mjpeg_decode_sof(), ff_thread_get_buffer(), ff_thread_get_ext_buffer(), ff_twinvq_decode_frame(), ff_vp56_decode_frame(), ffat_decode(), ffmal_copy_frame(), filter_frame(), filter_frame_fixed(), filter_frame_float(), fits_decode_frame(), frame_configure_elements(), ftr_decode_frame(), g2m_decode_frame(), g722_decode_frame(), g723_1_decode_frame(), gdv_decode_frame(), gem_decode_frame(), get_buffer(), get_buffer_with_edge(), gsm_decode_frame(), hcom_decode(), hnm_decode_frame(), hq_decode_frame(), hqa_decode_frame(), idcin_decode_frame(), ilbc_decode_frame(), imc_decode_frame(), init_frames(), ipu_decode_frame(), ipvideo_decode_frame(), lead_decode_frame(), libcelt_dec_decode(), libcodec2_decode(), libgsm_decode_frame(), libjxl_receive_frame(), libopus_decode(), librsvg_decode_frame(), libspeex_decode_frame(), libuavs3d_decode_frame(), libxevd_image_copy(), m101_decode_frame(), mace_decode_frame(), mediacodec_wrap_sw_buffer(), misc4_decode(), mp_decode_frame(), mpc7_decode_frame(), mpc8_decode_frame(), msp2_decode_frame(), mss2_decode_frame(), mvc_decode_frame(), mxpeg_decode_frame(), oggvorbis_decode_frame(), on2avc_decode_frame(), opus_decode_packet(), osq_receive_frame(), output_data(), paf_audio_decode(), pcm_bluray_decode_frame(), pcm_decode_frame(), pcm_dvd_decode_frame(), pcx_decode_frame(), pgx_decode_frame(), pix_decode_frame(), pnm_decode_frame(), ptx_decode_frame(), qcelp_decode_frame(), qdm2_decode_frame(), qdmc_decode_frame(), qoa_decode_frame(), ra144_decode_frame(), ra288_decode_frame(), reget_buffer_internal(), rka_decode_frame(), rl2_decode_frame(), s302m_decode_frame(), sbc_decode_frame(), sga_decode_frame(), sgirle_decode_frame(), shorten_decode_frame(), sipr_decode_frame(), siren_decode(), smka_decode_frame(), speedhq_decode_frame(), speex_decode_frame(), sunrast_decode_frame(), svc_decode_frame(), svq1_decode_frame(), synth_superframe(), tdsc_decode_frame(), tgq_decode_frame(), tgv_decode_frame(), thread_get_buffer_internal(), tmv_decode_frame(), tqi_decode_frame(), truemotion2rt_decode_frame(), truespeech_decode_frame(), txd_decode_frame(), v308_decode_frame(), v408_decode_frame(), vbn_decode_frame(), vcr1_decode_frame(), vmdaudio_decode_frame(), vmdvideo_decode_frame(), vorbis_decode_frame(), vpx_decode(), wavarc_decode(), wavesynth_decode(), wma_decode_superframe(), wmapro_decode_packet(), ws_snd_decode_frame(), xan_decode_frame(), xbm_decode_frame(), xface_decode_frame(), xma_decode_packet(), xpm_decode_frame(), xwd_decode_frame(), y216_decode_frame(), y41p_decode_frame(), yuv4_decode_frame(), zero12v_decode_frame(), and zerocodec_decode_frame().

◆ reget_buffer_internal()

static int reget_buffer_internal ( AVCodecContext avctx,
AVFrame frame,
int  flags 
)
static

Definition at line 1640 of file decode.c.

Referenced by ff_reget_buffer().

◆ ff_reget_buffer()

int ff_reget_buffer ( AVCodecContext avctx,
AVFrame frame,
int  flags 
)

◆ ff_decode_preinit()

int ff_decode_preinit ( struct AVCodecContext avctx)

Perform decoder initialization and validation.

Called when opening the decoder, before the FFCodec.init() call.

Definition at line 1685 of file decode.c.

Referenced by avcodec_open2().

◆ side_data_pref()

static int side_data_pref ( const AVCodecContext avctx,
AVFrame frame,
enum AVFrameSideDataType  type 
)
static

Check side data preference and clear existing side data from frame if needed.

Return values
0side data of this type can be added to frame
1side data of this type should not be added to frame

Definition at line 1802 of file decode.c.

Referenced by ff_decode_content_light_new(), ff_decode_mastering_display_new(), ff_frame_new_side_data(), and ff_frame_new_side_data_from_buf().

◆ ff_frame_new_side_data()

int ff_frame_new_side_data ( const AVCodecContext avctx,
AVFrame frame,
enum AVFrameSideDataType  type,
size_t  size,
AVFrameSideData **  sd 
)

Wrapper around av_frame_new_side_data, which rejects side data overridden by the demuxer.

Returns 0 on success, and a negative error code otherwise. If successful and sd is not NULL, *sd may either contain a pointer to the new side data, or NULL in case the side data was already present.

Definition at line 1818 of file decode.c.

Referenced by cri_decode_frame(), decode_frame(), ff_mjpeg_decode_frame_from_buf(), h264_export_frame_props(), mpeg_field_start(), populate_avctx_color_fields(), set_side_data(), tiff_decode_tag(), and webp_decode_frame().

◆ ff_frame_new_side_data_from_buf()

int ff_frame_new_side_data_from_buf ( const AVCodecContext avctx,
AVFrame frame,
enum AVFrameSideDataType  type,
AVBufferRef **  buf,
AVFrameSideData **  sd 
)

Similar to ff_frame_new_side_data, but using an existing buffer ref.

*buf is ALWAYS consumed by this function and NULL written in its place, even on failure.

Definition at line 1837 of file decode.c.

Referenced by export_itut_t35(), libdav1d_receive_frame(), libjxl_receive_frame(), mpeg_field_start(), and set_side_data().

◆ ff_decode_mastering_display_new()

int ff_decode_mastering_display_new ( const AVCodecContext avctx,
AVFrame frame,
struct AVMasteringDisplayMetadata **  mdm 
)

Wrapper around av_mastering_display_metadata_create_side_data(), which rejects side data overridden by the demuxer.

Returns 0 on success, and a negative error code otherwise. If successful, *mdm may either be a pointer to the new side data, or NULL in case the side data was already present.

Definition at line 1861 of file decode.c.

Referenced by export_metadata(), ff_h2645_sei_to_frame(), libdav1d_receive_frame(), and populate_avctx_color_fields().

◆ ff_decode_content_light_new()

int ff_decode_content_light_new ( const AVCodecContext avctx,
AVFrame frame,
struct AVContentLightMetadata **  clm 
)

Wrapper around av_content_light_metadata_create_side_data(), which rejects side data overridden by the demuxer.

Returns 0 on success, and a negative error code otherwise. If successful, *clm may either be a pointer to the new side data, or NULL in case the side data was already present.

Definition at line 1873 of file decode.c.

Referenced by export_metadata(), ff_h2645_sei_to_frame(), libdav1d_receive_frame(), and populate_avctx_color_fields().

◆ ff_copy_palette()

int ff_copy_palette ( void *  dst,
const AVPacket src,
void *  logctx 
)

Check whether the side-data of src contains a palette of size AVPALETTE_SIZE; if so, copy it to dst and return 1; else return 0.

Also emit an error message upon encountering a palette with invalid size.

Definition at line 1885 of file decode.c.

Referenced by cinepak_decode_frame(), decode_frame(), gdv_decode_frame(), idcin_decode_frame(), imx_decode_frame(), ipvideo_decode_frame(), msrle_decode_frame(), msvideo1_decode_frame(), qtrle_decode_frame(), raw_decode(), rscc_decode_frame(), and smc_decode_frame().

◆ ff_hwaccel_frame_priv_alloc()

int ff_hwaccel_frame_priv_alloc ( AVCodecContext avctx,
void **  hwaccel_picture_private 
)

Allocate a hwaccel frame private data if the provided avctx uses a hwaccel method that needs it.

The returned data is a RefStruct reference (if allocated).

Parameters
avctxThe codec context
hwaccel_picture_privatePointer to return hwaccel_picture_private
Returns
0 on success, < 0 on error

Definition at line 1900 of file decode.c.

Referenced by alloc_frame(), alloc_picture(), av1_frame_alloc(), vp8_alloc_frame(), and vp9_frame_alloc().

◆ ff_decode_flush_buffers()

void ff_decode_flush_buffers ( AVCodecContext avctx)

Definition at line 1929 of file decode.c.

Referenced by avcodec_flush_buffers().

◆ ff_decode_internal_alloc()

AVCodecInternal* ff_decode_internal_alloc ( void  )

Definition at line 1946 of file decode.c.

Referenced by avcodec_open2(), and init_thread().

Variable Documentation

◆ packet

enum AVPacketSideDataType packet

◆ frame

enum AVFrameSideDataType frame

◆ sd_global_map

const { ... } sd_global_map[]
AV_PKT_DATA_DISPLAYMATRIX
@ AV_PKT_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: packet.h:109
AV_PKT_DATA_AMBIENT_VIEWING_ENVIRONMENT
@ AV_PKT_DATA_AMBIENT_VIEWING_ENVIRONMENT
Ambient viewing environment metadata, as defined by H.274.
Definition: packet.h:331
AV_PKT_DATA_MASTERING_DISPLAY_METADATA
@ AV_PKT_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata (based on SMPTE-2086:2014).
Definition: packet.h:223
AV_FRAME_DATA_DISPLAYMATRIX
@ AV_FRAME_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:85
AV_PKT_DATA_REPLAYGAIN
@ AV_PKT_DATA_REPLAYGAIN
This side data should be associated with an audio stream and contains ReplayGain information in form ...
Definition: packet.h:100
AV_FRAME_DATA_AUDIO_SERVICE_TYPE
@ AV_FRAME_DATA_AUDIO_SERVICE_TYPE
This side data must be associated with an audio frame and corresponds to enum AVAudioServiceType defi...
Definition: frame.h:114
AV_PKT_DATA_STEREO3D
@ AV_PKT_DATA_STEREO3D
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: packet.h:115
AV_FRAME_DATA_SPHERICAL
@ AV_FRAME_DATA_SPHERICAL
The data represents the AVSphericalMapping structure defined in libavutil/spherical....
Definition: frame.h:131
AV_FRAME_DATA_ICC_PROFILE
@ AV_FRAME_DATA_ICC_PROFILE
The data contains an ICC profile as an opaque octet buffer following the format described by ISO 1507...
Definition: frame.h:144
AV_FRAME_DATA_MASTERING_DISPLAY_METADATA
@ AV_FRAME_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata associated with a video frame.
Definition: frame.h:120
AV_PKT_DATA_CONTENT_LIGHT_LEVEL
@ AV_PKT_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
Definition: packet.h:236
AV_PKT_DATA_SPHERICAL
@ AV_PKT_DATA_SPHERICAL
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: packet.h:229
AV_FRAME_DATA_REPLAYGAIN
@ AV_FRAME_DATA_REPLAYGAIN
ReplayGain information in the form of the AVReplayGain struct.
Definition: frame.h:77
AV_FRAME_DATA_AMBIENT_VIEWING_ENVIRONMENT
@ AV_FRAME_DATA_AMBIENT_VIEWING_ENVIRONMENT
Ambient viewing environment metadata, as defined by H.274.
Definition: frame.h:216
AV_FRAME_DATA_CONTENT_LIGHT_LEVEL
@ AV_FRAME_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
Definition: frame.h:137
AV_PKT_DATA_ICC_PROFILE
@ AV_PKT_DATA_ICC_PROFILE
ICC profile data consisting of an opaque octet buffer following the format described by ISO 15076-1.
Definition: packet.h:275
AV_FRAME_DATA_STEREO3D
@ AV_FRAME_DATA_STEREO3D
Stereoscopic 3d metadata.
Definition: frame.h:64
AV_PKT_DATA_AUDIO_SERVICE_TYPE
@ AV_PKT_DATA_AUDIO_SERVICE_TYPE
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.
Definition: packet.h:121