FFmpeg
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common internal API header More...
#include <limits.h>
#include <stdint.h>
#include <stddef.h>
#include <assert.h>
#include "config.h"
#include "attributes.h"
#include "timer.h"
#include "cpu.h"
#include "dict.h"
#include "macros.h"
#include "pixfmt.h"
#include "version.h"
#include "libm.h"
Go to the source code of this file.
Macros | |
#define | NDEBUG |
#define | av_export_avutil |
#define | FF_DISABLE_DEPRECATION_WARNINGS |
#define | FF_ENABLE_DEPRECATION_WARNINGS |
#define | FF_MEMORY_POISON 0x2a |
#define | MAKE_ACCESSORS(str, name, type, field) |
#define | AV_CHECK_OFFSET(s, m, o) |
#define | FF_ALLOC_TYPED_ARRAY(p, nelem) (p = av_malloc_array(nelem, sizeof(*p))) |
#define | FF_ALLOCZ_TYPED_ARRAY(p, nelem) (p = av_mallocz_array(nelem, sizeof(*p))) |
#define | NULL_IF_CONFIG_SMALL(x) x |
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. More... | |
#define | ONLY_IF_THREADS_ENABLED(x) NULL |
Define a function with only the non-default version specified. More... | |
#define | PTRDIFF_SPECIFIER "td" |
#define | SIZE_SPECIFIER "zu" |
#define | ff_dlog(ctx, ...) do { if (0) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0) |
#define | SUINT unsigned |
#define | SUINT32 uint32_t |
#define | FF_PSEUDOPAL AV_PIX_FMT_FLAG_PSEUDOPAL |
Functions | |
void | avpriv_report_missing_feature (void *avc, const char *msg,...) av_printf_format(2 |
Log a generic warning message about a missing feature. More... | |
void void | avpriv_request_sample (void *avc, const char *msg,...) av_printf_format(2 |
Log a generic warning message about a missing feature. More... | |
static av_always_inline av_const int64_t | ff_rint64_clip (double a, int64_t amin, int64_t amax) |
Clip and convert a double value into the long long amin-amax range. More... | |
av_warn_unused_result int | avpriv_open (const char *filename, int flags,...) |
A wrapper for open() setting O_CLOEXEC. More... | |
int | avpriv_tempfile (const char *prefix, char **filename, int log_offset, void *log_ctx) |
Wrapper to work around the lack of mkstemp() on mingw. More... | |
int | avpriv_set_systematic_pal2 (uint32_t pal[256], enum AVPixelFormat pix_fmt) |
static av_always_inline av_const int | avpriv_mirror (int x, int w) |
void | ff_check_pixfmt_descriptors (void) |
int | avpriv_dict_set_timestamp (AVDictionary **dict, const char *key, int64_t timestamp) |
Set a dictionary value to an ISO-8601 compliant timestamp string. More... | |
common internal API header
Definition in file internal.h.
#define NDEBUG |
Definition at line 30 of file internal.h.
#define av_export_avutil |
Definition at line 68 of file internal.h.
#define FF_DISABLE_DEPRECATION_WARNINGS |
Definition at line 83 of file internal.h.
Referenced by alac_encode_init(), av_codec_iterate(), av_frame_get_qp_table(), av_frame_set_qp_table(), av_frame_unref(), av_init_packet(), av_opt_child_class_iterate(), av_opt_child_next(), av_packet_copy_props(), av_packet_free_side_data(), av_packet_from_data(), av_packet_rescale_ts(), av_parser_init(), av_stream_get_codec_timebase(), av_write_image_line(), avcodec_close(), avcodec_copy_context(), avcodec_find_best_pix_fmt_of_list(), avcodec_open2(), avfilter_get_by_name(), avformat_alloc_output_context2(), avformat_find_stream_info(), avformat_new_stream(), avformat_open_input(), avformat_transfer_internal_stream_timing_info(), avpriv_set_pts_info(), bmp_encode_frame(), compute_pkt_fields(), copy_context_reset(), copy_frame(), cuvid_output_frame(), decode_dvd_subtitles(), decode_frame(), decode_simple_internal(), display_end_segment(), dnxhd_encode_init(), dnxhd_encode_picture(), dnxhd_load_picture(), do_swap(), dump_stream_format(), dvvideo_encode_frame(), encode_dvd_subtitles(), encode_frame(), encode_init(), encode_init_ls(), encode_picture_ls(), encode_thread(), ff_compute_frame_duration(), ff_decode_frame_props(), ff_format_set_url(), ff_mp4_read_dec_config_descr(), ff_mpeg1_init_uni_ac_vlc(), ff_mpv_encode_init(), ff_mpv_encode_picture(), ff_qsv_encode(), ff_stream_add_bitstream_filter(), ff_stream_encode_params_copy(), ff_thread_can_start_frame(), ff_thread_release_buffer(), ffat_decode(), ffmal_copy_frame(), find_decoder(), find_fps(), find_smallest_bounding_rectangle(), flac_encode_frame(), flac_encode_init(), flashsv_encode_frame(), frame_copy_props(), frame_end(), frame_worker_thread(), free_stream(), get_frame_defaults(), gif_decode_frame(), init_muxer(), init_video_param(), io_open_default(), j2kenc_init(), libdav1d_receive_frame(), libkvazaar_encode(), libx265_encode_frame(), ljpeg_encode_bgr(), ljpeg_encode_init(), ljpeg_encode_yuv(), main(), match_stream_specifier(), matroska_parse_frame(), mediacodec_wrap_hw_buffer(), mediacodec_wrap_sw_buffer(), mkv_write_packet_internal(), mov_parse_stsd_data(), mov_read_dac3(), mov_read_dec3(), mov_write_tmcd_tag(), mov_write_video_tag(), mpeg_decode_gop(), pam_encode_init(), pcx_encode_init(), png_enc_init(), pnm_encode_init(), process_output_surface(), qsv_decode(), qtrle_encode_frame(), raw_encode_init(), read_frame_internal(), save_subtitle_set(), segment_mux_init(), set_codec_from_probe_data(), srt_write_packet(), storeframe(), submit_packet(), sunrast_encode_init(), svc_decode_frame(), svc_encode_init(), svq1_encode_frame(), targa_encode_frame(), targa_encode_init(), teletext_decode_frame(), thread_get_buffer_internal(), update_context_from_thread(), update_context_from_user(), update_stream_avctx(), utvideo_encode_frame(), utvideo_encode_init(), v410_encode_frame(), v4l2_read_packet(), vp9_decode_frame(), vpx_init(), wrap_timestamp(), X264_frame(), X264_init(), XAVS_frame(), XAVS_init(), xsub_encode(), xvid_encode_frame(), xvid_encode_init(), and yuv4_write_header().
#define FF_ENABLE_DEPRECATION_WARNINGS |
Definition at line 84 of file internal.h.
Referenced by alac_encode_init(), av_bitstream_filter_filter(), av_copy_packet(), av_frame_get_qp_table(), av_frame_set_qp_table(), av_frame_unref(), av_free_packet(), av_init_packet(), av_opt_child_class_iterate(), av_opt_child_class_next(), av_packet_copy_props(), av_packet_rescale_ts(), av_parser_init(), av_picture_copy(), av_picture_pad(), av_stream_get_codec_timebase(), avcodec_close(), avcodec_copy_context(), avcodec_open2(), avcodec_register_all(), avfilter_get_by_name(), avformat_alloc_output_context2(), avformat_find_stream_info(), avformat_new_stream(), avformat_open_input(), avformat_transfer_internal_stream_timing_info(), avpriv_set_pts_info(), bmp_encode_frame(), compute_pkt_fields(), copy_context_reset(), copy_frame(), cuvid_output_frame(), decode_dvd_subtitles(), decode_frame(), decode_simple_internal(), display_end_segment(), dnxhd_encode_init(), dnxhd_encode_picture(), dnxhd_load_picture(), do_swap(), dump_stream_format(), dvvideo_encode_frame(), encode_dvd_subtitles(), encode_frame(), encode_init(), encode_init_ls(), encode_picture_ls(), encode_thread(), ff_compute_frame_duration(), ff_decode_frame_props(), ff_format_set_url(), ff_mp4_read_dec_config_descr(), ff_mpeg1_init_uni_ac_vlc(), ff_mpv_encode_init(), ff_mpv_encode_picture(), ff_qsv_encode(), ff_stream_add_bitstream_filter(), ff_stream_encode_params_copy(), ff_thread_can_start_frame(), ff_thread_get_format(), ff_thread_release_buffer(), ffat_decode(), ffmal_copy_frame(), find_decoder(), find_fps(), find_smallest_bounding_rectangle(), flac_encode_frame(), flac_encode_init(), flashsv_encode_frame(), frame_copy_props(), frame_end(), frame_worker_thread(), free_stream(), get_frame_defaults(), gif_decode_frame(), init_muxer(), init_video_param(), io_open_default(), j2kenc_init(), libdav1d_receive_frame(), libkvazaar_encode(), libx265_encode_frame(), ljpeg_encode_bgr(), ljpeg_encode_init(), ljpeg_encode_yuv(), main(), match_stream_specifier(), matroska_parse_frame(), mediacodec_wrap_hw_buffer(), mediacodec_wrap_sw_buffer(), mkv_write_packet_internal(), mov_parse_stsd_data(), mov_read_dac3(), mov_read_dec3(), mov_write_tmcd_tag(), mov_write_video_tag(), mpeg_decode_gop(), pam_encode_init(), pcx_encode_init(), png_enc_init(), pnm_encode_init(), process_output_surface(), qsv_decode(), qtrle_encode_frame(), raw_encode_init(), read_frame_internal(), save_subtitle_set(), segment_mux_init(), set_codec_from_probe_data(), srt_write_packet(), storeframe(), submit_packet(), sunrast_encode_init(), svc_decode_frame(), svc_encode_init(), svq1_encode_frame(), targa_encode_frame(), targa_encode_init(), teletext_decode_frame(), thread_get_buffer_internal(), update_context_from_thread(), update_context_from_user(), update_stream_avctx(), utvideo_encode_frame(), utvideo_encode_init(), v410_encode_frame(), v4l2_read_packet(), vp9_decode_frame(), vpx_init(), wrap_timestamp(), X264_frame(), X264_init(), XAVS_frame(), XAVS_init(), xsub_encode(), xvid_encode_frame(), xvid_encode_init(), and yuv4_write_header().
#define FF_MEMORY_POISON 0x2a |
Definition at line 88 of file internal.h.
Referenced by av_dynarray2_add(), av_malloc(), and pool_release_buffer().
Definition at line 90 of file internal.h.
Referenced by av_alloc_vdpaucontext(), avpriv_find_pix_fmt(), and wrap_timestamp().
#define AV_CHECK_OFFSET | ( | s, | |
m, | |||
o | |||
) |
Definition at line 97 of file internal.h.
#define FF_ALLOC_TYPED_ARRAY | ( | p, | |
nelem | |||
) | (p = av_malloc_array(nelem, sizeof(*p))) |
Definition at line 102 of file internal.h.
Referenced by adpcm_encode_frame(), adpcm_encode_init(), allocate_buffers(), allocate_sample_buffers(), init_context_frame(), init_mdct_win(), initFilter(), mxf_read_index_entry_array(), and sws_init_context().
#define FF_ALLOCZ_TYPED_ARRAY | ( | p, | |
nelem | |||
) | (p = av_mallocz_array(nelem, sizeof(*p))) |
Definition at line 103 of file internal.h.
Referenced by alloc_buffers(), allocate_buffers(), allocate_sample_buffers(), dnxhd_encode_init(), dnxhd_init_qmat(), dnxhd_init_rc(), dnxhd_init_vlc(), ff_h264_alloc_tables(), ff_h264_slice_context_init(), ff_mpeg_framesize_alloc(), ff_mpv_common_init(), ff_mpv_encode_init(), ff_snow_common_init(), ff_snow_common_init_after_header(), init_context_frame(), init_duplicate_context(), initFilter(), and sws_init_context().
#define NULL_IF_CONFIG_SMALL | ( | x | ) | x |
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 115 of file internal.h.
Referenced by a64multi_encode_frame(), ac3_eac3_probe(), activate(), amr_read_packet(), aptx_close(), aptx_decode_frame(), ass_decode_frame(), ass_encode_frame(), check_size(), config_output(), cyuv_decode_frame(), decode_end(), decode_flush(), decode_frame(), eightsvx_decode_close(), encode_frame(), encode_init(), encode_superframe(), ff_argo_asf_fill_stream(), ff_mpeg1_init_uni_ac_vlc(), ff_rtsp_open_transport_ctx(), ff_sp5x_process_packet(), ff_speedhq_mb_y_order_to_mb(), ff_vp8_decode_init(), filter_frame(), flashsv_decode_frame(), flush(), force_one_stream(), g726_reset(), gate(), get_aspect_ratio(), gsm_flush(), hash_free(), init(), libgsm_flush(), mlp_encode_close(), mlp_thd_probe(), mmf_read_packet(), mvc_decode_frame(), nvenc_old_init(), ogg_free(), plot_spectrum_column(), png_dec_end(), pnm_decode_frame(), pnm_encode_init(), predictor_calc_error(), process_command(), read_access_unit(), read_huffman_tree(), request_frame(), set_spdif(), srt_decode_frame(), srt_encode_close(), swf_deinit(), uninit(), v408_decode_frame(), v408_encode_frame(), and vpx_free().
#define ONLY_IF_THREADS_ENABLED | ( | x | ) | NULL |
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.
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 154 of file internal.h.
Referenced by ff_vp8_decode_init(), png_dec_end(), and read_huffman_tree().
#define PTRDIFF_SPECIFIER "td" |
Definition at line 190 of file internal.h.
Referenced by decode_cblk(), decode_chunks(), decode_slice(), encode_dvd_subtitles(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_sps(), ff_hevc_decode_nal_vps(), ff_mjpeg_find_marker(), ff_mjpeg_receive_frame(), ff_vorbis_comment(), flac_parse(), load_input_picture(), main(), parse_packed_headers(), revert_channel_correlation(), wma_decode_superframe(), zmbv_decode_xor_16(), zmbv_decode_xor_32(), and zmbv_decode_xor_8().
#define SIZE_SPECIFIER "zu" |
Definition at line 191 of file internal.h.
Referenced by aom_encode(), aom_init(), ape_read_header(), apply_cropping(), av1_decode_frame(), avgblur_opencl_filter_frame(), cbs_av1_read_unit(), cbs_av1_split_fragment(), cbs_vp9_split_fragment(), cbs_write_unit_data(), convolution_opencl_filter_frame(), dnxhd_decode_header(), draw_items(), dump_enc_cfg(), dump_spherical(), epic_jb_decode_tile(), ff_h264_decode_picture_parameter_set(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_sps(), ff_hevc_decode_nal_vps(), get_http_header_data(), get_tcp_server_response(), hap_compress_frame(), hq_decode_frame(), hqa_decode_frame(), http_write_reply(), jpeg2000_decode_packet(), main(), neighbor_opencl_filter_frame(), opencl_mem_flags_for_mapping(), parse_multipart_header(), program_opencl_run(), queue_frames(), read_data_packet(), read_geobtag(), storeframe(), sup_write_packet(), unsharp_opencl_filter_frame(), and vpx_init().
Definition at line 197 of file internal.h.
#define SUINT unsigned |
Definition at line 206 of file internal.h.
#define SUINT32 uint32_t |
Definition at line 207 of file internal.h.
#define FF_PSEUDOPAL AV_PIX_FMT_FLAG_PSEUDOPAL |
Definition at line 297 of file internal.h.
Referenced by activate(), av_image_alloc(), av_image_fill_plane_sizes(), av_image_get_buffer_size(), calc_cropping_offsets(), config_props(), decode_frame(), ff_draw_init(), ff_frame_pool_get(), ff_frame_pool_video_init(), filter_frame(), image_copy(), raw_decode(), raw_init_decoder(), validate_avframe_allocation(), and video_get_buffer().
Log a generic warning message about a missing feature.
[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(), 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(), dvbsub_parse_object_segment(), execute_model_native(), execute_model_tf(), 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_rtsp_open_transport_ctx(), ff_rv10_encode_picture_header(), ff_spdif_read_packet(), ff_vc1_parse_frame_header_adv(), 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(), matroska_read_header(), 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(), vqa_decode_init(), 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.
[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 |
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static |
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.
a | value to clip |
amin | minimum value of the clip range |
amax | maximum value of the clip range |
Definition at line 224 of file internal.h.
av_warn_unused_result int avpriv_open | ( | const char * | filename, |
int | flags, | ||
... | |||
) |
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(), ff_rint64_clip(), file_move(), 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.
Definition at line 110 of file file_open.c.
Referenced by av_tempfile(), cache_open(), ff_rint64_clip(), and xvid_encode_init().
int avpriv_set_systematic_pal2 | ( | uint32_t | pal[256], |
enum AVPixelFormat | pix_fmt | ||
) |
Definition at line 176 of file imgutils.c.
Referenced by av_image_alloc(), bmp_encode_frame(), ff_frame_pool_get(), ff_rint64_clip(), gif_encode_init(), pcx_encode_frame(), raw_init_decoder(), scale_frame(), video_get_buffer(), and xwd_encode_frame().
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static |
Definition at line 267 of file internal.h.
Referenced by avfilter_transform(), blur(), compose(), decompose(), 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 2628 of file pixdesc.c.
Referenced by avpriv_mirror(), and main().
int avpriv_dict_set_timestamp | ( | AVDictionary ** | dict, |
const char * | key, | ||
int64_t | timestamp | ||
) |
Set a dictionary value to an ISO-8601 compliant timestamp string.
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 |
Definition at line 258 of file dict.c.
Referenced by avpriv_mirror(), ff_standardize_creation_time(), matroska_metadata_creation_time(), mov_metadata_creation_time(), and parse_header().