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FFmpeg
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Types and functions for working with AVPacket. More...
Data Structures | |
| struct | AVPacketSideData |
| struct | AVPacket |
| This structure stores compressed data. More... | |
Macros | |
| #define | AV_PKT_DATA_QUALITY_FACTOR AV_PKT_DATA_QUALITY_STATS |
| #define | AV_PKT_FLAG_KEY 0x0001 |
| The packet contains a keyframe. More... | |
| #define | AV_PKT_FLAG_CORRUPT 0x0002 |
| The packet content is corrupted. More... | |
| #define | AV_PKT_FLAG_DISCARD 0x0004 |
| Flag is used to discard packets which are required to maintain valid decoder state but are not required for output and should be dropped after decoding. More... | |
| #define | AV_PKT_FLAG_TRUSTED 0x0008 |
| The packet comes from a trusted source. More... | |
| #define | AV_PKT_FLAG_DISPOSABLE 0x0010 |
| Flag is used to indicate packets that contain frames that can be discarded by the decoder. More... | |
Functions | |
| AVPacket * | av_packet_alloc (void) |
| Allocate an AVPacket and set its fields to default values. More... | |
| AVPacket * | av_packet_clone (const AVPacket *src) |
| Create a new packet that references the same data as src. More... | |
| void | av_packet_free (AVPacket **pkt) |
| Free the packet, if the packet is reference counted, it will be unreferenced first. More... | |
| void | av_init_packet (AVPacket *pkt) |
| Initialize optional fields of a packet with default values. More... | |
| int | av_new_packet (AVPacket *pkt, int size) |
| Allocate the payload of a packet and initialize its fields with default values. More... | |
| void | av_shrink_packet (AVPacket *pkt, int size) |
| Reduce packet size, correctly zeroing padding. More... | |
| int | av_grow_packet (AVPacket *pkt, int grow_by) |
| Increase packet size, correctly zeroing padding. More... | |
| int | av_packet_from_data (AVPacket *pkt, uint8_t *data, int size) |
| Initialize a reference-counted packet from av_malloc()ed data. More... | |
| attribute_deprecated int | av_dup_packet (AVPacket *pkt) |
| attribute_deprecated int | av_copy_packet (AVPacket *dst, const AVPacket *src) |
| Copy packet, including contents. More... | |
| attribute_deprecated int | av_copy_packet_side_data (AVPacket *dst, const AVPacket *src) |
| Copy packet side data. More... | |
| attribute_deprecated void | av_free_packet (AVPacket *pkt) |
| Free a packet. More... | |
| uint8_t * | av_packet_new_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size) |
| Allocate new information of a packet. More... | |
| int | av_packet_add_side_data (AVPacket *pkt, enum AVPacketSideDataType type, uint8_t *data, size_t size) |
| Wrap an existing array as a packet side data. More... | |
| int | av_packet_shrink_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size) |
| Shrink the already allocated side data buffer. More... | |
| uint8_t * | av_packet_get_side_data (const AVPacket *pkt, enum AVPacketSideDataType type, int *size) |
| Get side information from packet. More... | |
| attribute_deprecated int | av_packet_merge_side_data (AVPacket *pkt) |
| attribute_deprecated int | av_packet_split_side_data (AVPacket *pkt) |
| const char * | av_packet_side_data_name (enum AVPacketSideDataType type) |
| uint8_t * | av_packet_pack_dictionary (AVDictionary *dict, int *size) |
| Pack a dictionary for use in side_data. More... | |
| int | av_packet_unpack_dictionary (const uint8_t *data, int size, AVDictionary **dict) |
| Unpack a dictionary from side_data. More... | |
| void | av_packet_free_side_data (AVPacket *pkt) |
| Convenience function to free all the side data stored. More... | |
| int | av_packet_ref (AVPacket *dst, const AVPacket *src) |
| Setup a new reference to the data described by a given packet. More... | |
| void | av_packet_unref (AVPacket *pkt) |
| Wipe the packet. More... | |
| void | av_packet_move_ref (AVPacket *dst, AVPacket *src) |
| Move every field in src to dst and reset src. More... | |
| int | av_packet_copy_props (AVPacket *dst, const AVPacket *src) |
| Copy only "properties" fields from src to dst. More... | |
| int | av_packet_make_refcounted (AVPacket *pkt) |
| Ensure the data described by a given packet is reference counted. More... | |
| int | av_packet_make_writable (AVPacket *pkt) |
| Create a writable reference for the data described by a given packet, avoiding data copy if possible. More... | |
| void | av_packet_rescale_ts (AVPacket *pkt, AVRational tb_src, AVRational tb_dst) |
| Convert valid timing fields (timestamps / durations) in a packet from one timebase to another. More... | |
Types and functions for working with AVPacket.
| #define AV_PKT_DATA_QUALITY_FACTOR AV_PKT_DATA_QUALITY_STATS |
| #define AV_PKT_FLAG_KEY 0x0001 |
The packet contains a keyframe.
Definition at line 1462 of file avcodec.h.
Referenced by a64multi_encode_frame(), amf_copy_buffer(), ape_tag_read_field(), apng_read_packet(), asf_parse_packet(), asf_read_payload(), asf_read_picture(), asf_read_pts(), asf_read_timestamp(), asf_write_packet(), av_read_frame(), avcodec_encode_audio2(), avf_read_packet(), avi_read_packet(), avi_write_packet_internal(), avpriv_dv_produce_packet(), avs_read_audio_packet(), avs_read_video_packet(), avui_encode_frame(), bmp_encode_frame(), cdxl_read_packet(), cine_read_packet(), cinepak_encode_frame(), compute_pkt_fields(), daala_gptopts(), dash_write_packet(), dc1394_read_packet(), decode_frame(), decode_frame_common(), dirac_gptopts(), dnxhd_encode_picture(), do_streamcopy(), dump_extradata(), dv_extract_audio_info(), dvvideo_encode_frame(), ea_read_packet(), encode_frame(), encode_picture_ls(), encode_png(), ff_flac_parse_picture(), ff_id3v2_parse_apic(), ff_img_read_packet(), ff_mov_add_hinted_packet(), ff_mov_write_packet(), ff_mpv_encode_picture(), ff_rm_parse_packet(), ff_rm_retrieve_cache(), ff_subtitles_queue_insert(), ff_v4l2_buffer_avpkt_to_buf(), ff_v4l2_buffer_buf_to_avpkt(), fifo_thread_write_packet(), film_read_packet(), film_write_packet(), fits_encode_frame(), fits_read_packet(), flashsv2_encode_frame(), flashsv_decode_frame(), flashsv_encode_frame(), flv_data_packet(), flv_read_packet(), flv_write_packet(), framecrc_write_packet(), gdv_read_packet(), get_attachment(), get_needed_flags(), gif_encode_frame(), gif_read_packet(), h263_handle_packet(), hap_encode(), hds_write_packet(), hls_read_packet(), hls_write_packet(), idcin_read_packet(), iff_read_packet(), ism_write_packet(), libkvazaar_encode(), libopenjpeg_encode_frame(), libwebp_anim_encode_frame(), libwebp_encode_frame(), libx265_encode_frame(), ljpeg_encode_frame(), lmlm4_read_packet(), lvf_read_packet(), lxf_read_packet(), magy_encode_frame(), main(), matroska_parse_block(), matroska_read_header(), mkv_write_packet(), mkv_write_packet_internal(), modplug_read_packet(), mov_create_chapter_track(), mov_create_timecode_track(), mov_parse_vc1_frame(), mov_read_chapters(), mov_read_covr(), mov_read_packet(), mov_write_single_packet(), mpeg_mux_write_packet(), mpegts_write_flush(), mpegts_write_packet_internal(), msnwc_tcp_read_packet(), mux_frames(), mv_read_packet(), ndi_set_audio_packet(), ndi_set_video_packet(), nsv_read_chunk(), nut_write_packet(), nuv_packet(), ogg_read_packet(), ogg_read_timestamp(), ogg_validate_keyframe(), ogg_write_packet_internal(), ogm_packet(), old_dirac_gptopts(), omx_encode_frame(), pam_encode_frame(), parse_packet(), pcx_encode_frame(), pkt_dump_internal(), pnm_encode_frame(), process_output_surface(), prores_encode_frame(), put_payload_header(), qt_rtp_parse_packet(), qtrle_encode_frame(), raw_encode(), read_dst_frame(), read_frame(), read_frame_internal(), read_packet(), remove_extradata(), rm_write_audio(), rm_write_video(), roq_encode_frame(), rpl_read_packet(), sdr2_read_packet(), seek_frame_generic(), seg_write_packet(), show_packet(), siff_read_packet(), smush_read_packet(), storeframe(), sunrast_encode_frame(), sup_read_packet(), svc_encode_frame(), svq1_encode_frame(), targa_encode_frame(), theora_gptopts(), tmv_read_packet(), trace_headers(), utvideo_encode_frame(), v308_encode_frame(), v408_encode_frame(), v410_encode_frame(), vaapi_encode_output(), vc1t_read_packet(), vc1test_write_packet(), vid_read_packet(), decklink_input_callback::VideoInputFrameArrived(), vp8_gptopts(), vp8_handle_packet(), vtenc_cm_to_avpacket(), webm_clusters_start_with_keyframe(), wrapped_avframe_encode(), write_timestamp(), X264_frame(), XAVS_frame(), xbm_encode_frame(), xface_encode_frame(), xmv_fetch_video_packet(), xvid_encode_frame(), xwd_encode_frame(), y41p_encode_frame(), yop_read_packet(), yuv4_encode_frame(), and zerocodec_decode_frame().
| #define AV_PKT_FLAG_CORRUPT 0x0002 |
The packet content is corrupted.
Definition at line 1463 of file avcodec.h.
Referenced by aal_read_packet(), aiff_read_packet(), apc_read_packet(), append_packet_chunked(), ff_pcm_read_packet(), ff_read_packet(), ff_v4l2_buffer_buf_to_avpkt(), handle_packet(), mp3_read_packet(), new_pes_packet(), opus_packet(), process_input(), read_packet(), sds_read_packet(), sol_read_packet(), trace_headers(), vorbis_packet(), and vp8_handle_packet().
| #define AV_PKT_FLAG_DISCARD 0x0004 |
Flag is used to discard packets which are required to maintain valid decoder state but are not required for output and should be dropped after decoding.
Definition at line 1469 of file avcodec.h.
Referenced by ff_decode_frame_props(), initializations(), mov_read_packet(), parse_packet(), and show_packet().
| #define AV_PKT_FLAG_TRUSTED 0x0008 |
The packet comes from a trusted source.
Otherwise-unsafe constructs such as arbitrary pointers to data outside the packet may be followed.
Definition at line 1476 of file avcodec.h.
Referenced by kmsgrab_read_packet(), and wrapped_avframe_decode().
| #define AV_PKT_FLAG_DISPOSABLE 0x0010 |
Flag is used to indicate packets that contain frames that can be discarded by the decoder.
I.e. Non-reference frames.
Definition at line 1481 of file avcodec.h.
Referenced by ff_mov_write_packet(), and libx265_encode_frame().
| enum AVPacketSideDataType |
| Enumerator | |
|---|---|
| AV_PKT_DATA_PALETTE |
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette. This side data signals that a new palette is present. |
| AV_PKT_DATA_NEW_EXTRADATA |
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was changed and the receiving side should act upon it appropriately. The new extradata is embedded in the side data buffer and should be immediately used for processing the current frame or packet. |
| AV_PKT_DATA_PARAM_CHANGE |
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows: u32le param_flags
if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT)
s32le channel_count
if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT)
u64le channel_layout
if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE)
s32le sample_rate
if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS)
s32le width
s32le height
|
| AV_PKT_DATA_H263_MB_INFO |
An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of structures with info about macroblocks relevant to splitting the packet into smaller packets on macroblock edges (e.g. as for RFC 2190). That is, it does not necessarily contain info about all macroblocks, as long as the distance between macroblocks in the info is smaller than the target payload size. Each MB info structure is 12 bytes, and is laid out as follows: |
| AV_PKT_DATA_REPLAYGAIN |
This side data should be associated with an audio stream and contains ReplayGain information in form of the AVReplayGain struct. |
| AV_PKT_DATA_DISPLAYMATRIX |
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to be applied to the decoded video frames for correct presentation. See libavutil/display.h for a detailed description of the data. |
| AV_PKT_DATA_STEREO3D |
This side data should be associated with a video stream and contains Stereoscopic 3D information in form of the AVStereo3D struct. |
| AV_PKT_DATA_AUDIO_SERVICE_TYPE |
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType. |
| AV_PKT_DATA_QUALITY_STATS |
This side data contains quality related information from the encoder. |
| AV_PKT_DATA_FALLBACK_TRACK |
This side data contains an integer value representing the stream index of a "fallback" track. A fallback track indicates an alternate track to use when the current track can not be decoded for some reason. e.g. no decoder available for codec. |
| AV_PKT_DATA_CPB_PROPERTIES |
This side data corresponds to the AVCPBProperties struct. |
| AV_PKT_DATA_SKIP_SAMPLES |
Recommmends skipping the specified number of samples. |
| AV_PKT_DATA_JP_DUALMONO |
An AV_PKT_DATA_JP_DUALMONO side data packet indicates that the packet may contain "dual mono" audio specific to Japanese DTV and if it is true, recommends only the selected channel to be used. u8 selected channels (0=mail/left, 1=sub/right, 2=both)
|
| AV_PKT_DATA_STRINGS_METADATA |
A list of zero terminated key/value strings. There is no end marker for the list, so it is required to rely on the side data size to stop. |
| AV_PKT_DATA_SUBTITLE_POSITION |
Subtitle event position. u32le x1
u32le y1
u32le x2
u32le y2
|
| AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL |
Data found in BlockAdditional element of matroska container. There is no end marker for the data, so it is required to rely on the side data size to recognize the end. 8 byte id (as found in BlockAddId) followed by data. |
| AV_PKT_DATA_WEBVTT_IDENTIFIER |
The optional first identifier line of a WebVTT cue. |
| AV_PKT_DATA_WEBVTT_SETTINGS |
The optional settings (rendering instructions) that immediately follow the timestamp specifier of a WebVTT cue. |
| AV_PKT_DATA_METADATA_UPDATE |
A list of zero terminated key/value strings. There is no end marker for the list, so it is required to rely on the side data size to stop. This side data includes updated metadata which appeared in the stream. |
| AV_PKT_DATA_MPEGTS_STREAM_ID |
MPEGTS stream ID, this is required to pass the stream ID information from the demuxer to the corresponding muxer. |
| AV_PKT_DATA_MASTERING_DISPLAY_METADATA |
Mastering display metadata (based on SMPTE-2086:2014). This metadata should be associated with a video stream and contains data in the form of the AVMasteringDisplayMetadata struct. |
| AV_PKT_DATA_SPHERICAL |
This side data should be associated with a video stream and corresponds to the AVSphericalMapping structure. |
| AV_PKT_DATA_CONTENT_LIGHT_LEVEL |
Content light level (based on CTA-861.3). This metadata should be associated with a video stream and contains data in the form of the AVContentLightMetadata struct. |
| AV_PKT_DATA_A53_CC |
ATSC A53 Part 4 Closed Captions. This metadata should be associated with a video stream. A53 CC bitstream is stored as uint8_t in AVPacketSideData.data. The number of bytes of CC data is AVPacketSideData.size. |
| AV_PKT_DATA_ENCRYPTION_INIT_INFO |
This side data is encryption initialization data. The format is not part of ABI, use av_encryption_init_info_* methods to access. |
| AV_PKT_DATA_ENCRYPTION_INFO |
This side data contains encryption info for how to decrypt the packet. The format is not part of ABI, use av_encryption_info_* methods to access. |
| AV_PKT_DATA_NB |
The number of side data types. This is not part of the public API/ABI in the sense that it may change when new side data types are added. This must stay the last enum value. If its value becomes huge, some code using it needs to be updated as it assumes it to be smaller than other limits. |
Allocate an AVPacket and set its fields to default values.
The resulting struct must be freed using av_packet_free().
Definition at line 51 of file avpacket.c.
Referenced by apng_write_packet(), av_bsf_alloc(), av_packet_clone(), avcodec_open2(), decode_init(), extract_extradata_init(), ff_bsf_get_packet(), ff_reshuffle_raw_rgb(), gif_write_packet(), main(), vp9_superframe_init(), and worker().
Create a new packet that references the same data as src.
This is a shortcut for av_packet_alloc()+av_packet_ref().
Definition at line 634 of file avpacket.c.
Referenced by decklink_write_video_packet(), flac_write_packet(), and main().
Free the packet, if the packet is reference counted, it will be unreferenced first.
| pkt | packet to be freed. The pointer will be set to NULL. |
Definition at line 62 of file avpacket.c.
Referenced by av_bsf_free(), av_packet_clone(), avcodec_close(), avformat_find_stream_info(), avi_write_packet(), decklink_write_video_packet(), decode_end(), dump_extradata(), extract_extradata_init(), ff_reshuffle_raw_rgb(), filter_units_filter(), free_stream(), h264_metadata_filter(), h264_mp4toannexb_filter(), h264_redundant_pps_filter(), h265_metadata_filter(), hevc_mp4toannexb_filter(), imx_dump_header(), main(), mjpeg2jpeg_filter(), mjpega_dump_header(), mov_write_packet(), mp3_header_decompress(), mpeg2_metadata_filter(), mpeg4_unpack_bframes_filter(), decklink_frame::Release(), text2movsub(), vp9_raw_reorder_filter(), vp9_raw_reorder_frame_free(), vp9_superframe_close(), and vp9_superframe_filter().
Initialize optional fields of a packet with default values.
Note, this does not touch the data and size members, which have to be initialized separately.
| pkt | packet |
Definition at line 33 of file avpacket.c.
Referenced by asf_read_stream_properties(), asf_read_timestamp(), av_get_packet(), av_interleaved_write_frame(), av_new_packet(), av_packet_move_ref(), av_packet_unref(), av_write_uncoded_frame_internal(), avcodec_encode_audio2(), avcodec_encode_video2(), avformat_find_stream_info(), avpriv_dv_produce_packet(), compute_crc_of_packets(), do_audio_out(), do_streamcopy(), do_subtitle_out(), do_video_out(), dv_extract_audio_info(), encode_frame(), encode_write(), encode_write_frame(), FDBPrepare(), ff_alloc_packet2(), ff_cbs_write_packet(), ff_flac_parse_picture(), ff_id3v2_parse_apic(), ff_interleave_packet_per_dts(), ff_load_image(), ff_mov_add_hinted_packet(), ff_read_packet(), ff_rtp_finalize_packet(), ffmmal_decode(), fifo_basic_test(), fifo_overflow_drop_test(), fifo_write_packet(), filter(), filter_frame(), find_video_stream_info(), flac_read_timestamp(), flush_encoders(), hnm_read_header(), init_packet(), initializations(), lavfi_read_packet(), LLVMFuzzerTestOneInput(), main(), matroska_parse_frame(), matroska_read_header(), mkv_write_header(), mov_write_subtitle_end_packet(), movie_push_frame(), mpegts_get_dts(), mpegts_write_packet_internal(), mpjpeg_read_packet(), mux_frames(), mxf_interleave_get_packet(), new_data_packet(), new_pes_packet(), packet_queue_put_nullpacket(), parse_packet(), process_input_packet(), qt_rtp_parse_packet(), read_frame_internal(), read_interval_packets(), reset_packet(), reset_packet_state(), rtp_mpegts_write_packet(), run_test(), signal_init_ts(), sp5x_decode_frame(), tdsc_decode_jpeg_tile(), video_decode(), video_decode_example(), decklink_input_callback::VideoInputFrameArrived(), vp8_lossy_decode_frame(), wc3_read_header(), worker(), write_audio_frame(), write_skip_frames(), write_video_frame(), and xvid_encode_init().
Allocate the payload of a packet and initialize its fields with default values.
| pkt | packet |
| size | wanted payload size |
Definition at line 86 of file avpacket.c.
Referenced by aa_read_packet(), aac_parse_packet(), ac3_handle_packet(), amr_handle_packet(), amr_read_packet(), ape_read_packet(), asf_deinterleave(), asf_parse_packet(), asf_read_replicated_data(), asf_read_single_payload(), audio_read_packet(), avf_read_packet(), avisynth_read_packet_audio(), avisynth_read_packet_video(), avs_read_video_packet(), bmv_read_packet(), callback(), cdxl_read_packet(), cin_read_packet(), create_subcc_packet(), decode_frame(), demux_audio(), demux_video(), dss_723_1_read_packet(), dss_sp_read_packet(), dump_extradata(), dxa_read_packet(), encode_frame(), fbdev_read_packet(), ff_alloc_packet2(), ff_h263_handle_packet(), ff_h264_handle_aggregated_packet(), ff_h264_handle_frag_packet(), ff_img_read_packet(), ff_raw_read_partial_packet(), ff_reshuffle_raw_rgb(), ff_rm_retrieve_cache(), ff_spdif_read_packet(), ff_subtitles_queue_insert(), fits_read_packet(), flic_read_packet(), fourxm_read_packet(), fsb_read_packet(), g723_1_read_packet(), gdigrab_read_packet(), genh_read_packet(), grab_read_packet(), h264_handle_packet(), hevc_handle_packet(), ilbc_read_packet(), image_available(), imx_dump_header(), interleave_new_audio_packet(), latm_parse_packet(), lavfi_read_packet(), load_ipmovie_packet(), lxf_read_packet(), main(), matroska_parse_rm_audio(), matroska_parse_webvtt(), matroska_read_header(), merge_superframe(), mjpeg2jpeg_filter(), mjpega_dump_header(), mmap_read_frame(), modplug_read_packet(), mp3_header_decompress(), mpa_robust_parse_packet(), mpc_read_packet(), mpeg_parse_packet(), mpegts_raw_read_packet(), mxg_read_packet(), ndi_set_audio_packet(), ndi_set_video_packet(), nuv_packet(), ogg_read_packet(), pulse_read_packet(), qdm2_restore_block(), qt_rtp_parse_packet(), read_frame(), read_packet(), read_packet_gme(), read_packet_openmpt(), recode_subtitle(), return_stored_frame(), rm_assemble_video_frame(), rm_read_audio_stream_info(), roq_read_packet(), rsd_read_packet(), rtp_parse_packet_internal(), s337m_read_packet(), sbg_read_packet(), sdr2_read_packet(), sds_read_packet(), seq_read_packet(), siff_read_packet(), smacker_read_packet(), store_packet(), str_read_packet(), supply_new_packets(), swf_read_packet(), text2movsub(), vaapi_encode_output(), vc2hq_handle_sequence_header(), vc2hq_mark_end_of_sequence(), videostream_cb(), vmd_read_packet(), vp9_raw_reorder_make_output(), vpk_read_packet(), vqf_read_packet(), wsaud_read_packet(), wv_read_packet(), xcbgrab_frame(), xiph_handle_packet(), and yop_read_packet().
Reduce packet size, correctly zeroing padding.
| pkt | packet |
| size | new size |
Definition at line 101 of file avpacket.c.
Referenced by adp_read_packet(), append_packet_chunked(), asf_parse_packet(), cdxl_read_packet(), cin_read_packet(), decode_frame(), encode_frame(), ff_raw_read_partial_packet(), fourxm_read_packet(), hap_encode(), libopenjpeg_encode_frame(), libopus_encode(), mxf_decrypt_triplet(), mxf_get_d10_aes3_packet(), nuv_packet(), sdr2_read_packet(), swf_read_packet(), twolame_encode_frame(), and yop_read_packet().
Increase packet size, correctly zeroing padding.
| pkt | packet |
| grow_by | number of bytes by which to increase the size of the packet |
Definition at line 109 of file avpacket.c.
Referenced by alloc_and_copy(), append_packet_chunked(), encode_callback(), encode_frame(), ff_subtitles_queue_insert(), hevc_mp4toannexb_filter(), main(), stream_seek(), stream_skip(), stream_write(), and wv_read_packet().
Initialize a reference-counted packet from av_malloc()ed data.
| pkt | packet to be initialized. This function will set the data, size, buf and destruct fields, all others are left untouched. |
| data | Data allocated by av_malloc() to be used as packet data. If this function returns successfully, the data is owned by the underlying AVBuffer. The caller may not access the data through other means. |
| size | size of data in bytes, without the padding. I.e. the full buffer size is assumed to be size + AV_INPUT_BUFFER_PADDING_SIZE. |
Definition at line 152 of file avpacket.c.
Referenced by ff_rtp_finalize_packet(), iec61883_parse_queue_dv(), main(), mpeg4_unpack_bframes_filter(), omx_encode_frame(), prepare_packet(), qt_rtp_parse_packet(), and rfc4175_finalize_packet().
| attribute_deprecated int av_dup_packet | ( | AVPacket * | pkt | ) |
Definition at line 251 of file avpacket.c.
| attribute_deprecated int av_copy_packet | ( | AVPacket * | dst, |
| const AVPacket * | src | ||
| ) |
Copy packet, including contents.
Definition at line 262 of file avpacket.c.
| attribute_deprecated int av_copy_packet_side_data | ( | AVPacket * | dst, |
| const AVPacket * | src | ||
| ) |
Copy packet side data.
Definition at line 226 of file avpacket.c.
Referenced by copy_packet_data().
| attribute_deprecated void av_free_packet | ( | AVPacket * | pkt | ) |
Free a packet.
| pkt | packet to free |
Definition at line 281 of file avpacket.c.
| uint8_t* av_packet_new_side_data | ( | AVPacket * | pkt, |
| enum AVPacketSideDataType | type, | ||
| int | size | ||
| ) |
Allocate new information of a packet.
| pkt | packet |
| type | side information type |
| size | side information size |
Definition at line 329 of file avpacket.c.
Referenced by aac_adtstoasc_filter(), add_event(), asf_parse_packet(), av_packet_copy_props(), avi_read_packet(), concat_read_packet(), encode_apng(), ff_add_param_change(), ff_mpv_encode_picture(), ff_side_data_set_encoder_stats(), flac_encode_frame(), flv_read_packet(), gdv_read_packet(), gif_encode_frame(), gif_image_write_image(), idcin_read_packet(), lavfi_read_packet(), libopus_encode(), load_ipmovie_packet(), matroska_deliver_packet(), matroska_parse_frame(), matroska_parse_webvtt(), mov_change_extradata(), mov_read_packet(), mp3lame_encode_frame(), new_pes_packet(), ogg_read_packet(), opus_encode_frame(), process_input(), read_frame(), read_frame_internal(), read_sm_data(), storeframe(), swf_read_packet(), and vorbis_encode_frame().
| int av_packet_add_side_data | ( | AVPacket * | pkt, |
| enum AVPacketSideDataType | type, | ||
| uint8_t * | data, | ||
| size_t | size | ||
| ) |
Wrap an existing array as a packet side data.
| pkt | packet |
| type | side information type |
| data | the side data array. It must be allocated with the av_malloc() family of functions. The ownership of the data is transferred to pkt. |
| size | side information size |
Definition at line 295 of file avpacket.c.
Referenced by av_packet_new_side_data(), extract_extradata_filter(), ff_mpv_encode_picture(), get_metadata(), h264_metadata_filter(), and setup_side_data_entry().
| int av_packet_shrink_side_data | ( | AVPacket * | pkt, |
| enum AVPacketSideDataType | type, | ||
| int | size | ||
| ) |
Shrink the already allocated side data buffer.
| pkt | packet |
| type | side information type |
| size | new side information size |
Definition at line 542 of file avpacket.c.
Referenced by ff_mpv_encode_picture().
| uint8_t* av_packet_get_side_data | ( | const AVPacket * | pkt, |
| enum AVPacketSideDataType | type, | ||
| int * | size | ||
| ) |
Get side information from packet.
| pkt | packet |
| type | desired side information type |
| size | pointer for side information size to store (optional) |
Definition at line 350 of file avpacket.c.
Referenced by aac_decode_frame(), add_metadata_from_side_data(), adts_write_packet(), apply_param_change(), cinepak_decode_frame(), decode_frame(), decode_simple_internal(), decode_tag(), extract_extradata(), ff_decode_frame_props(), ff_get_packet_palette(), ff_side_data_set_encoder_stats(), ffat_decode(), flac_write_audio_packet(), flush_packet(), flv_write_packet(), gdv_decode_frame(), gif_write_packet(), h264_decode_frame(), h264_metadata_filter(), hevc_decode_frame(), idcin_decode_frame(), ipvideo_decode_frame(), latm_write_packet(), mkv_check_new_extra_data(), mkv_write_block(), mkv_write_vtt_blocks(), mov_write_single_packet(), mp3_write_audio_packet(), mpegts_write_packet_internal(), msrle_decode_frame(), msvideo1_decode_frame(), process_input(), qtrle_decode_frame(), raw_decode(), read_frame_internal(), rscc_decode_frame(), rtp_write_packet(), show_packet(), smc_decode_frame(), srt_decode_frame(), srt_write_packet(), vpx_decode(), webvtt_write_packet(), and write_packet().
| attribute_deprecated int av_packet_merge_side_data | ( | AVPacket * | pkt | ) |
Definition at line 399 of file avpacket.c.
| attribute_deprecated int av_packet_split_side_data | ( | AVPacket * | pkt | ) |
Definition at line 434 of file avpacket.c.
| const char* av_packet_side_data_name | ( | enum AVPacketSideDataType | type | ) |
Definition at line 367 of file avpacket.c.
Referenced by print_pkt_side_data(), and setup_side_data_entry().
| uint8_t* av_packet_pack_dictionary | ( | AVDictionary * | dict, |
| int * | size | ||
| ) |
Pack a dictionary for use in side_data.
| dict | The dictionary to pack. |
| size | pointer to store the size of the returned data |
Definition at line 482 of file avpacket.c.
Referenced by concat_read_packet(), and vorbis_update_metadata().
| int av_packet_unpack_dictionary | ( | const uint8_t * | data, |
| int | size, | ||
| AVDictionary ** | dict | ||
| ) |
Unpack a dictionary from side_data.
| data | data from side_data |
| size | size of the data |
| dict | the metadata storage dictionary |
Definition at line 517 of file avpacket.c.
Referenced by add_metadata_from_side_data(), and show_packet().
Convenience function to free all the side data stored.
All the other fields stay untouched.
| pkt | packet |
Definition at line 270 of file avpacket.c.
Referenced by av_free_packet(), av_packet_copy_props(), av_packet_ref(), and av_packet_unref().
Setup a new reference to the data described by a given packet.
If src is reference-counted, setup dst as a new reference to the buffer in src. Otherwise allocate a new buffer in dst and copy the data from src into it.
All the other fields are copied from src.
| dst | Destination packet |
| src | Source packet |
Definition at line 601 of file avpacket.c.
Referenced by aiff_write_packet(), apng_write_packet(), av_packet_clone(), avcodec_send_packet(), extract_extradata(), ff_interleave_add_packet(), ff_packet_list_put(), ff_subtitles_queue_read_packet(), ffat_decode(), fifo_write_packet(), flush_packet(), gif_write_packet(), mkv_write_packet(), mov_write_packet(), qsv_decode_frame(), read_thread(), submit_packet(), tee_write_packet(), vp9_superframe_split_filter(), webp_write_packet(), and write_packet().
Wipe the packet.
Unreference the buffer referenced by the packet and reset the remaining packet fields to their default values.
| pkt | The packet to be unreferenced. |
Definition at line 592 of file avpacket.c.
Referenced by aac_adtstoasc_filter(), adp_read_packet(), adts_aac_read_packet(), adx_read_packet(), aiff_write_trailer(), amr_read_packet(), android_camera_read_close(), ape_read_packet(), append_packet_chunked(), asf_deinterleave(), asf_parse_packet(), asf_read_close(), asf_read_header(), asf_read_picture(), asf_read_pts(), asf_read_timestamp(), asf_reset_header(), asfrtp_parse_packet(), audio_read_packet(), av_bitstream_filter_filter(), av_copy_packet_side_data(), av_interleaved_write_frame(), av_packet_alloc(), av_packet_free(), av_packet_merge_side_data(), av_read_frame(), av_write_trailer(), avcodec_decode_subtitle2(), avcodec_encode_audio2(), avcodec_encode_video2(), avcodec_flush_buffers(), avcodec_receive_packet(), avcodec_send_packet(), avformat_find_stream_info(), avi_read_close(), avi_read_packet(), avisynth_read_packet_audio(), avisynth_read_packet_video(), avpacket_queue_flush(), avpacket_queue_put(), avs_read_video_packet(), binkaudio_receive_frame(), bsf_list_filter(), bsfs_poll(), cdxl_read_packet(), cin_read_packet(), compute_crc_of_packets(), concat_read_packet(), copy_packet_data(), crystalhd_decode_packet(), crystalhd_receive_frame(), cuvid_output_frame(), decode_audio_frame(), decode_frame(), decode_simple_internal(), decoder_decode_frame(), decoder_destroy(), demux_audio(), dfa_read_packet(), do_encode(), drop_dups(), dshow_read_close(), dss_723_1_read_packet(), dss_sp_read_packet(), dump_extradata(), dxa_read_packet(), ea_read_packet(), eac3_core_filter(), encode(), encode_audio_frame(), encode_frame(), encode_picture_ls(), encode_write(), estimate_timings_from_pts(), extract_extradata(), extract_extradata_filter(), extract_packet_props(), failing_write_packet(), ff_decode_get_packet(), ff_frame_thread_free(), ff_img_read_packet(), ff_interleave_add_packet(), ff_interleave_packet_per_dts(), ff_load_image(), ff_packet_list_free(), ff_qsv_enc_close(), ff_raw_read_partial_packet(), ff_read_packet(), ff_rm_free_rmstream(), ff_spdif_read_packet(), ff_subtitles_queue_clean(), ff_v4l2_buffer_buf_to_avpkt(), ffat_close_decoder(), ffat_decode(), ffat_decode_callback(), ffat_decode_flush(), ffmpeg_cleanup(), fifo_basic_test(), fifo_overflow_drop_test(), fifo_thread_recover(), fifo_thread_write_packet(), fifo_write_packet(), filter_packet(), find_video_stream_info(), fits_read_packet(), flac_finish_header(), flac_queue_flush(), flac_read_timestamp(), flic_read_packet(), flush(), flush_encoders(), flush_packet(), flv_read_packet(), fourxm_read_packet(), free_message(), free_pkt_fifo(), free_playlist_list(), free_stream(), g723_1_read_packet(), gdv_read_packet(), gsm_read_packet(), h264_metadata_filter(), h264_mp4toannexb_filter(), h265_metadata_filter(), handle_id3(), hapqa_extract(), hevc_mp4toannexb_filter(), hls_read_packet(), hls_read_seek(), hnm_read_close(), idcin_read_packet(), iec61883_parse_queue_dv(), ilbc_read_packet(), image_available(), imx_dump_header(), interleave_packet(), lavfi_read_packet(), libopus_encode(), load_ipmovie_packet(), lxf_read_packet(), main(), matroska_parse_frame(), matroska_parse_rm_audio(), matroska_parse_webvtt(), mediacodec_decode_close(), mediacodec_decode_flush(), mediacodec_send_receive(), mjpeg2jpeg_filter(), mjpega_dump_header(), mkv_write_packet(), mkv_write_trailer(), mmap_read_frame(), modplug_read_packet(), mov2textsub(), mov_free(), mov_write_eac3_tag(), mov_write_subtitle_end_packet(), movie_push_frame(), mp3_header_decompress(), mp3_queue_flush(), mp3lame_encode_frame(), mpa_robust_parse_packet(), mpc_read_packet(), mpc_read_seek(), mpeg2_metadata_filter(), mpeg4_unpack_bframes_filter(), mpegts_get_dts(), mpegts_raw_read_packet(), mpegts_read_packet(), mpjpeg_read_packet(), mxf_interleave_get_packet(), nc_read_packet(), noise(), nsv_read_close(), nuv_packet(), ogg_read_packet(), packet_queue_flush(), packet_queue_put(), parse_packet(), process_input(), qsv_clear_buffers(), qsv_decode_frame(), qt_rtp_parse_packet(), read_frame_internal(), read_interval_packets(), read_packet(), read_thread(), recode_subtitle(), redspark_read_packet(), reset_packet(), reset_packet_state(), rl2_read_packet(), rm_assemble_video_frame(), rm_read_packet(), roq_read_packet(), rpl_read_packet(), run_test(), s337m_read_packet(), sap_fetch_packet(), decklink_output_callback::ScheduledFrameCompleted(), sdr2_read_packet(), seek_frame_generic(), seek_subtitle(), siff_read_packet(), storeframe(), str_read_close(), str_read_packet(), submit_packet(), swf_read_packet(), text2movsub(), thp_read_packet(), trace_headers(), tta_encode_frame(), tta_queue_flush(), vfw_read_close(), video_decode(), video_decode_example(), vivo_read_packet(), vmd_read_packet(), vp9_superframe_filter(), vp9_superframe_split_filter(), vp9_superframe_split_uninit(), vpk_read_packet(), vqf_read_packet(), vtenc_frame(), wc3_read_close(), write_packet(), write_trailer(), wv_read_packet(), xiph_handle_packet(), xvid_encode_frame(), xvid_encode_init(), yop_read_close(), yop_read_packet(), yop_read_seek(), and yuv4_read_packet().
Move every field in src to dst and reset src.
| src | Source packet, will be reset |
| dst | Destination packet |
Definition at line 647 of file avpacket.c.
Referenced by asf_read_packet(), av_bsf_send_packet(), avcodec_receive_packet(), avpacket_queue_put(), decoder_decode_frame(), dump_extradata(), ff_bsf_get_packet_ref(), ffat_decode_callback(), filter_units_filter(), h264_mp4toannexb_filter(), hevc_mp4toannexb_filter(), mjpega_dump_header(), mp3_header_decompress(), mpeg4_unpack_bframes_filter(), vp9_raw_reorder_make_output(), vp9_superframe_filter(), and vp9_superframe_split_filter().
Copy only "properties" fields from src to dst.
Properties for the purpose of this function are all the fields beside those related to the packet data (buf, data, size)
| dst | Destination packet |
| src | Source packet |
Definition at line 558 of file avpacket.c.
Referenced by av_packet_ref(), dump_extradata(), extract_packet_props(), ff_reshuffle_raw_rgb(), filter_units_filter(), h264_metadata_filter(), h264_mp4toannexb_filter(), h264_redundant_pps_filter(), h265_metadata_filter(), hevc_mp4toannexb_filter(), imx_dump_header(), mjpeg2jpeg_filter(), mjpega_dump_header(), mp3_header_decompress(), mpeg2_metadata_filter(), mpeg4_unpack_bframes_filter(), text2movsub(), and vp9_superframe_filter().
Ensure the data described by a given packet is reference counted.
| pkt | packet whose data should be made reference counted. |
Definition at line 655 of file avpacket.c.
Referenced by av_bsf_send_packet(), avcodec_encode_audio2(), avcodec_encode_video2(), avpacket_queue_put(), ff_read_packet(), parse_packet(), and worker().
Create a writable reference for the data described by a given packet, avoiding data copy if possible.
| pkt | Packet whose data should be made writable. |
Definition at line 673 of file avpacket.c.
Referenced by mpeg4_unpack_bframes_filter(), and noise().
| void av_packet_rescale_ts | ( | AVPacket * | pkt, |
| AVRational | tb_src, | ||
| AVRational | tb_dst | ||
| ) |
Convert valid timing fields (timestamps / durations) in a packet from one timebase to another.
Timestamps with unknown values (AV_NOPTS_VALUE) will be ignored.
| pkt | packet on which the conversion will be performed |
| tb_src | source timebase, in which the timing fields in pkt are expressed |
| tb_dst | destination timebase, to which the timing fields will be converted |
Definition at line 694 of file avpacket.c.
Referenced by do_audio_out(), do_video_out(), encode_write(), encode_write_frame(), fifo_thread_write_packet(), flush_encoders(), main(), tee_write_packet(), write_frame(), and write_packet().
1.8.6
