Definition at line 30 of file internal.h.

Definition at line 67 of file internal.h.

Definition at line 82 of file internal.h.

Definition at line 83 of file internal.h.

Definition at line 87 of file internal.h.

Definition at line 92 of file internal.h.

Definition at line 97 of file internal.h.

Definition at line 98 of file internal.h.

Definition at line 100 of file internal.h.

Access a field in a structure by its offset.

Definition at line 105 of file internal.h.

Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.

Used to disable the definition of strings (for example AVCodec long_names).

Definition at line 117 of file internal.h.

Define a function with only the non-default version specified.

On systems with ELF shared libraries, all symbols exported from FFmpeg libraries are tagged with the name and major version of the library to which they belong. If a function is moved from one library to another, a wrapper must be retained in the original location to preserve binary compatibility.

Functions defined with this macro will never be used to resolve symbols by the build-time linker.

Parameters

type return type of function

name name of function

args argument list of function

ver version tag to assign function Return NULL if a threading library has not been enabled. Used to disable threading functions in AVCodec definitions when not needed.

Definition at line 156 of file internal.h.

Definition at line 192 of file internal.h.

Definition at line 193 of file internal.h.

Definition at line 199 of file internal.h.

Definition at line 205 of file internal.h.

Definition at line 214 of file internal.h.

Definition at line 215 of file internal.h.

Log a generic warning message about a missing feature.

Parameters

[in] avc a pointer to an arbitrary struct of which the first field is a pointer to an AVClass struct

[in] msg string containing the name of the missing feature

Referenced by aac_adtstoasc_filter(), add_conv_layer(), alac_decode_frame(), alac_decode_init(), amrnb_decode_frame(), amrnb_decode_init(), amrwb_decode_init(), atrac3p_decode_frame(), avi_write_header(), bmp_decode_frame(), cfhd_decode(), check_modelinput_inlink(), check_output_nb(), codec2_read_header(), cpia_decode_frame(), decode_audio_specific_config_gb(), decode_block(), decode_eld_specific_config(), decode_element(), decode_extension_payload(), decode_frame(), decode_ga_specific_config(), decode_gop_header(), decode_group3_2d_line(), decode_header(), decode_ics(), decode_idat_chunk(), decode_seq_header(), decode_subframe(), decode_tones_info(), dnn_detect_post_proc(), dvbsub_parse_object_segment(), execute_model_native(), ff_check_exec_params(), ff_dnn_execute_model_ov(), ff_get_wav_header(), ff_h264_decode_picture_parameter_set(), ff_hevc_encode_nal_vps(), ff_ivi_decode_frame(), ff_jpegls_decode_picture(), ff_mjpeg_decode_sof(), ff_mjpeg_decode_sos(), ff_proc_from_dnn_to_frame(), ff_proc_from_frame_to_dnn(), ff_rtp_send_vc2hq(), ff_rv10_encode_picture_header(), ff_spdif_read_packet(), ff_vc1_parse_frame_header_adv(), fill_model_input_tf(), g2m_decode_frame(), g2m_load_cursor(), g723_1_encode_init(), get_packet_header(), h264_handle_packet(), handle_id3(), hevc_handle_packet(), jpeg_parse_packet(), libopenjpeg_decode_frame(), mpc8_read_header(), mpegaudio_parse(), ogg_replace_stream(), old_codec37(), old_codec47(), parse_adts_frame_header(), parse_bit_alloc(), parse_channel(), parse_decoder_init(), parse_fmtp_config(), parse_MP4SLDescrTag(), parse_packed_headers(), pixfmt_from_pixmap_format(), read_frame_header(), read_header(), rpl_read_header(), rso_read_header(), rso_write_header(), s337m_get_offset_and_codec(), set_option(), shorten_decode_frame(), spdif_write_header(), svq3_decode_slice_header(), tak_decode_frame(), tiff_decode_tag(), txd_decode_frame(), v4l2_check_b_frame_support(), vfw_read_header(), vp5_parse_header(), vp6_parse_header(), vp9_handle_packet(), wv_read_block_header(), xcbgrab_read_header(), xiph_handle_packet(), and xwd_decode_frame().

Log a generic warning message about a missing feature.

Additionally request that a sample showcasing the feature be uploaded.

Parameters

[in] avc a pointer to an arbitrary struct of which the first field is a pointer to an AVClass struct

[in] msg string containing the name of the missing feature

Clip and convert a double value into the long long amin-amax range.

This function is needed because conversion of floating point to integers when it does not fit in the integer's representation does not necessarily saturate correctly (usually converted to a cvttsd2si on x86) which saturates numbers

INT64_MAX to INT64_MIN. The standard marks such conversions as undefined

behavior, allowing this sort of mathematically bogus conversions. This provides a safe alternative that is slower obviously but assures safety and better mathematical behavior.

Parameters

a value to clip

amin minimum value of the clip range

amax maximum value of the clip range

Returns

clipped value

Definition at line 232 of file internal.h.

A wrapper for open() setting O_CLOEXEC.

Definition at line 66 of file file_open.c.

Referenced by av_file_map(), av_fopen_utf8(), bktr_init(), fbdev_read_header(), fbdev_write_header(), ff_fbdev_get_device_list(), ff_oss_audio_open(), and read_random().

Wrapper to work around the lack of mkstemp() on mingw.

Also, tries to create file in /tmp first, if possible. *prefix can be a character constant; *filename will be allocated internally.

Returns

file descriptor of opened file (or negative value corresponding to an AVERROR code on error) and opened file name in **filename.

Note

On very old libcs it is necessary to set a secure umask before calling this, av_tempfile() can't call umask itself as it is used in libraries and could interfere with the calling application.

Definition at line 110 of file file_open.c.

Referenced by av_tempfile(), cache_open(), and xvid_encode_init().

Definition at line 178 of file imgutils.c.

Referenced by av_image_alloc(), bmp_encode_frame(), ff_frame_pool_get(), gif_encode_init(), pcx_encode_frame(), scale_frame(), and xwd_encode_frame().

Definition at line 275 of file internal.h.

Referenced by blur(), compose(), decompose(), ff_affine_transform(), spatial_compose53i_buffered_init(), spatial_compose53i_dy(), spatial_compose53i_dy_buffered(), spatial_compose53i_init(), spatial_compose53i_init_TMPL(), spatial_compose97i_buffered_init(), spatial_compose97i_dy(), spatial_compose97i_dy_buffered(), spatial_compose97i_init(), spatial_compose97i_init_TMPL(), spatial_compose_daub97i_dy_TMPL(), spatial_compose_dirac53i_dy_TMPL(), spatial_decompose53i(), and spatial_decompose97i().

Definition at line 2715 of file pixdesc.c.

Referenced by main().

Set a dictionary value to an ISO-8601 compliant timestamp string.

Parameters

dict pointer to a pointer to a dictionary struct. If *dict is NULL a dictionary struct is allocated and put in *dict.

key metadata key

timestamp unix timestamp in microseconds

Returns

<0 on error

Definition at line 258 of file dict.c.

Referenced by amf_parse_object(), ff_standardize_creation_time(), matroska_parse_flac(), mov_metadata_creation_time(), and parse_header().