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common.h File Reference

common internal and external API header More...

#include <errno.h>
#include <inttypes.h>
#include <limits.h>
#include <math.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "attributes.h"
#include "version.h"
#include "libavutil/avconfig.h"
#include "config.h"
#include "intmath.h"
#include "common.h"
#include "mem.h"
#include "internal.h"

Go to the source code of this file.

Macros

#define AV_NE(be, le)   (le)
 
#define RSHIFT(a, b)   ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
 
#define ROUNDED_DIV(a, b)   (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
 
#define FF_CEIL_RSHIFT(a, b)
 
#define FFUDIV(a, b)   (((a)>0 ?(a):(a)-(b)+1) / (b))
 
#define FFUMOD(a, b)   ((a)-(b)*FFUDIV(a,b))
 
#define FFABS(a)   ((a) >= 0 ? (a) : (-(a)))
 
#define FFSIGN(a)   ((a) > 0 ? 1 : -1)
 
#define FFMAX(a, b)   ((a) > (b) ? (a) : (b))
 
#define FFMAX3(a, b, c)   FFMAX(FFMAX(a,b),c)
 
#define FFMIN(a, b)   ((a) > (b) ? (b) : (a))
 
#define FFMIN3(a, b, c)   FFMIN(FFMIN(a,b),c)
 
#define FFSWAP(type, a, b)   do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
 
#define FF_ARRAY_ELEMS(a)   (sizeof(a) / sizeof((a)[0]))
 
#define FFALIGN(x, a)   (((x)+(a)-1)&~((a)-1))
 
#define MKTAG(a, b, c, d)   ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))
 
#define MKBETAG(a, b, c, d)   ((d) | ((c) << 8) | ((b) << 16) | ((unsigned)(a) << 24))
 
#define GET_UTF8(val, GET_BYTE, ERROR)
 Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.
 
#define GET_UTF16(val, GET_16BIT, ERROR)
 Convert a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form.
 
#define PUT_UTF8(val, tmp, PUT_BYTE)
 Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long).
 
#define PUT_UTF16(val, tmp, PUT_16BIT)
 Convert a 32-bit Unicode character to its UTF-16 encoded form (2 or 4 bytes).
 

Functions

static av_always_inline
av_const int 
av_clip_c (int a, int amin, int amax)
 Clip a signed integer value into the amin-amax range.
 
static av_always_inline
av_const int64_t 
av_clip64_c (int64_t a, int64_t amin, int64_t amax)
 Clip a signed 64bit integer value into the amin-amax range.
 
static av_always_inline
av_const uint8_t 
av_clip_uint8_c (int a)
 Clip a signed integer value into the 0-255 range.
 
static av_always_inline
av_const int8_t 
av_clip_int8_c (int a)
 Clip a signed integer value into the -128,127 range.
 
static av_always_inline
av_const uint16_t 
av_clip_uint16_c (int a)
 Clip a signed integer value into the 0-65535 range.
 
static av_always_inline
av_const int16_t 
av_clip_int16_c (int a)
 Clip a signed integer value into the -32768,32767 range.
 
static av_always_inline
av_const int32_t 
av_clipl_int32_c (int64_t a)
 Clip a signed 64-bit integer value into the -2147483648,2147483647 range.
 
static av_always_inline
av_const unsigned 
av_clip_uintp2_c (int a, int p)
 Clip a signed integer to an unsigned power of two range.
 
static av_always_inline int av_sat_add32_c (int a, int b)
 Add two signed 32-bit values with saturation.
 
static av_always_inline int av_sat_dadd32_c (int a, int b)
 Add a doubled value to another value with saturation at both stages.
 
static av_always_inline
av_const float 
av_clipf_c (float a, float amin, float amax)
 Clip a float value into the amin-amax range.
 
static av_always_inline
av_const double 
av_clipd_c (double a, double amin, double amax)
 Clip a double value into the amin-amax range.
 
static av_always_inline
av_const int 
av_ceil_log2_c (int x)
 Compute ceil(log2(x)).
 
static av_always_inline
av_const int 
av_popcount_c (uint32_t x)
 Count number of bits set to one in x.
 
static av_always_inline
av_const int 
av_popcount64_c (uint64_t x)
 Count number of bits set to one in x.
 

Variables

attribute_deprecated const uint8_t av_reverse [256]
 Reverse the order of the bits of an 8-bits unsigned integer.
 

Detailed Description

common internal and external API header

Definition in file common.h.

Macro Definition Documentation

#define AV_NE (   be,
  le 
)    (le)
#define RSHIFT (   a,
  b 
)    ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))

Definition at line 53 of file common.h.

Referenced by get_amv(), unpack_vectors(), and vp56_decode_4mv().

#define ROUNDED_DIV (   a,
  b 
)    (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
#define FF_CEIL_RSHIFT (   a,
  b 
)
#define FFUDIV (   a,
  b 
)    (((a)>0 ?(a):(a)-(b)+1) / (b))
#define FFUMOD (   a,
  b 
)    ((a)-(b)*FFUDIV(a,b))
#define FFABS (   a)    ((a) >= 0 ? (a) : (-(a)))

Definition at line 61 of file common.h.

Referenced by add_8x8basis_TMPL(), alloc_scratch_buffers(), apply_channel_coupling(), apply_tilt_comp(), asf_read_stream_properties(), av_compare_ts(), av_reduce(), av_resample(), avi_read_header(), await_reference_row(), boundary_strength(), build_abs_diff_mask(), check_mv(), choose_rct_params(), codebook_sanity_check_for_rate_quarter(), config_video_output(), dct_error(), dct_max8x8_c(), dct_quantize_refine(), dct_quantize_trellis_c(), dct_single_coeff_elimination(), decode_bmv_frame(), decode_dc_coeffs(), decode_dct(), decode_fixed_vector(), decode_frame(), decode_frame_header(), decode_pic(), decode_q_branch(), decode_tones_amplitude(), dering_TMPL(), dirac_decode_data_unit(), dirac_decode_picture_header(), do_a_deblock_C(), do_apply_filter(), doHorizDefFilter_C(), doHorizLowPass_C(), doVertDefFilter_TMPL(), doVertLowPass_TMPL(), dpcm_predict(), draw_line(), dts_probe(), dv_init_enc_block(), encode_acs(), encode_block(), encode_header(), encode_picture_ls(), encode_q_branch(), encode_q_branch2(), encode_subband_c0run(), estimate_acs(), estimate_dcs(), estimate_stereo_mode(), estimate_timings_from_pts(), ff_h263_encode_picture_header(), ff_h264_direct_ref_list_init(), ff_init_me(), ff_jpegls_update_state_regular(), ff_mpeg1_encode_init(), ff_mpeg4_encode_mb(), ff_msmpeg4_decode_block(), ff_nelly_get_sample_bits(), filter_frame(), filter_line_c(), filter_line_c_16bit(), filter_plane(), flashsv_encode_frame(), flv_read_packet(), frame_size_alloc(), generate_noise(), get_block_bits(), get_diff_limited_q(), get_needed_flags(), get_qminmax(), get_rrp(), get_sae(), get_scale_factor(), get_shift(), get_tilt_comp(), guess_mv(), gxf_seek(), h263_h_loop_filter_c(), h263_v_loop_filter_c(), h264_loop_filter_chroma(), h264_loop_filter_chroma_intra(), h264_loop_filter_luma(), h264_loop_filter_luma_intra(), h_block_filter(), hadamard8_intra8x8_c(), hadamard_func(), headroom(), hev(), horizX1Filter(), implicit_weight_table(), init_muxer(), init_uni_ac_vlc(), initFilter(), interpol(), intra_pred(), inv_predict_11(), long_term_filter(), loop_filter(), ls_decode_line(), ls_encode_line(), ls_encode_regular(), ls_get_code_runterm(), main(), make_glyphs(), mov_find_next_sample(), mov_read_ctts(), mp3_write_xing(), mpc8_decode_frame(), mpeg1_encode_sequence_header(), mpeg4_decode_block(), msrle_decode_8_16_24_32(), mss4_decode_dct(), nsse16_c(), nsse8_c(), packed_16bpc_bswap(), packedCopyWrapper(), paf_video_decode(), postProcess_TMPL(), pp_postprocess(), precalc_coefs(), pred_spatial_direct_motion(), put_alpha_diff(), put_s(), put_symbol(), put_symbol_inline(), render_line(), reverse_dc_prediction(), rtcp_update_jitter(), rv40_loop_filter_strength(), rv40_strong_loop_filter(), rv40_weak_loop_filter(), sab_diamond_search(), scale_vector(), scaleforopp_x(), scaleforopp_y(), scaleforsame_x(), scaleforsame_y(), search_for_quantizers_faac(), select_from_pts_buffer(), seq_unpack_rle_block(), silk_is_lpc_stable(), silk_lsf2lpc(), skip_check(), sobel(), sum_abs_dctelem_c(), swap_channel_layouts_on_filter(), swri_rematrix_init_x86(), sws_getShiftedVec(), sws_scale(), try_8x8basis_TMPL(), ts_str(), update_vlc_state(), v_block_filter(), vc1_filter_line(), vc1_pred_b_mv(), vc1_pred_mv(), vertX1Filter_TMPL(), vorbis_floor1_decode(), vp6_filter(), vp7_simple_limit(), vp8_simple_limit(), w_c(), wmv2_pred_motion(), x8_loop_filter(), and xan_wc3_copy_pixel_run().

#define FFSIGN (   a)    ((a) > 0 ? 1 : -1)
#define FFMAX (   a,
  b 
)    ((a) > (b) ? (a) : (b))
Examples:
decoding_encoding.c.

Definition at line 64 of file common.h.

Referenced by aac_encode_frame(), ac3_bit_alloc_calc_bap_c(), ac3_eac3_probe(), adaptive_quantization(), add_codec(), add_file(), add_tonal_components(), adjust_frame_information(), adpcm_compress_trellis(), adpcm_decode_frame(), adts_aac_probe(), alloc_array_elem(), alloc_picture(), alloc_sequence_buffers(), allocate_buffers(), append_packet_chunked(), apply_8x8(), apply_channel_coupling(), apply_delogo(), apply_lpc(), apply_tns(), asf_build_simple_index(), asf_write_packet(), audio_open(), auto_matrix(), av_d2q(), av_fast_realloc(), av_fifo_grow(), av_image_copy(), av_image_copy_to_buffer(), av_probe_input_buffer2(), av_probe_input_format3(), av_resample(), av_resample_init(), avcodec_align_dimensions(), avcodec_align_dimensions2(), avfilter_graph_dump_to_buf(), avformat_find_stream_info(), avi_read_header(), avi_read_packet(), avi_read_seek(), avi_write_counters(), avi_write_packet(), avpriv_ac3_parse_header2(), avresample_build_matrix(), avresample_get_delay(), avresample_open(), await_reference_row(), bidir_refine(), bink_decode_plane(), bit_allocation(), blend_image(), blur_pixel(), build_diff_map(), build_feed_streams(), build_filter(), build_table(), calc_bit_demand(), calc_input_response(), calc_lowcomp(), calc_lowcomp1(), calc_reduced_thr_3gpp(), calc_reduction_3gpp(), calc_stereo_peak(), calculate_bitrate(), calculate_display_rect(), calculate_scales(), cavs_decode_frame(), cdg_scroll(), celt_decode_allocation(), celt_decode_bands(), celt_decode_coarse_energy(), check_external_clock_speed(), check_stream_max_drift(), chroma_4mv_motion(), chroma_4mv_motion_lowres(), cmap_read_palette(), codec_reinit(), comp_ppf_coeff(), compare_fields(), compute_affinity(), compute_pkt_fields2(), compute_target_delay(), config_input(), config_output(), config_props(), copy(), copy_backptr(), copy_chapters(), create(), create_vorbis_context(), dc_test(), dca_decode_frame(), dct_error(), dct_max8x8_c(), decode(), decode_audio_block(), decode_b(), decode_channel_residues(), decode_channel_sound_unit(), decode_chunks(), decode_component(), decode_entropy_coded_image(), decode_entropy_image(), decode_frame(), decode_frame_header(), decode_init(), decode_lowdelay_slice(), decode_lspf(), decode_p_frame(), decode_postinit(), decode_scale_factors(), decode_var_block_data(), dirac_decode_frame_internal(), dirac_unpack_prediction_parameters(), direct_search(), dnxhd_encode_rdo(), dnxhd_find_qscale(), do_a_deblock_C(), do_psnr(), doHorizDefFilter_C(), doVertDefFilter_TMPL(), draw_text(), dv_decode_video_segment(), encode_block(), encode_cblk(), encode_dvd_subtitles(), encode_frame(), encode_init(), encode_picture(), epzs_motion_search_internal(), estimate_timings(), estimate_timings_from_pts(), execute_code(), fade(), fade_gain(), ff_ac3_bit_alloc_calc_mask(), ff_ac3_bit_alloc_calc_psd(), ff_acelp_reorder_lsf(), ff_acelp_update_past_gain(), ff_ass_add_rect(), ff_atrac3p_power_compensation(), ff_audio_mix(), ff_audio_resample(), ff_audio_resample_init(), ff_celt_decode_frame(), ff_celt_imdct_init(), ff_decklink_write_packet(), ff_dither_alloc(), ff_draw_init(), ff_emulated_edge_mc(), ff_fast_malloc(), ff_find_last_ts(), ff_g729_postfilter(), ff_gen_syncpoint_search(), ff_get_best_fcode(), ff_gradfun_filter_line_c(), ff_h264_alloc_tables(), ff_h264_decode_seq_parameter_set(), ff_h264_execute_ref_pic_marking(), ff_hevc_cu_chroma_qp_offset_idx(), ff_hevc_hls_residual_coding(), ff_init_me(), ff_interleave_packet_per_dts(), ff_jpeg2000_dwt_init(), ff_jpeg2000_init_component(), ff_jpegls_init_state(), ff_jpegls_reset_coding_parameters(), ff_jpegls_update_state_regular(), ff_lag_rac_init(), ff_mjpeg_decode_dqt(), ff_MPV_encode_init(), ff_MPV_encode_picture(), ff_MPV_lowest_referenced_row(), ff_msmpeg4_encode_ext_header(), ff_nelly_get_sample_bits(), ff_pca(), ff_rfps_calculate(), ff_seek_frame_binary(), ff_set_min_dist_lsf(), ff_snow_common_init_after_header(), ff_snow_pred_block(), ff_srtp_decrypt(), ff_timefilter_update(), ff_yuv2rgb_c_init_tables(), ffio_limit(), ffio_rewind_with_probe_data(), ffm_seek1(), filter(), filter_frame(), filter_level_for_mb(), find_best_state(), find_hb_gain(), find_max_val(), find_new_headers(), find_next_delta_ts(), findCode(), flac_parse(), flv_write_packet(), frame_erasure(), framesync_sync_level_update(), ftp_write(), full_search(), g729d_onset_decision(), gain_scale(), generate_intervals(), generate_transition(), get_block_rd(), get_buffer_internal(), get_channel_layout_single(), get_dc(), get_exponent_dynamic(), get_floor_average(), get_fps(), get_limits(), get_lowest_part_list_y(), get_lowest_part_y(), get_new_centroids(), get_pix_fmt_depth(), get_qcx(), get_quant_quality(), get_rotated_h(), get_rotated_w(), get_sample_rate(), get_siz(), get_tag(), get_visual_weight(), gmc1_motion(), guess_dc(), guess_mv(), gxf_seek(), h261_probe(), h_block_filter(), handle_file(), hls_window(), horizX1Filter(), hpel_motion(), hpel_motion_lowres(), http_start_receive_data(), huff_reader_build_canonical(), hvcc_parse_sps(), hvcc_parse_vps(), hvcc_update_ptl(), init(), init_exp(), init_luts(), init_offset(), init_pass2(), init_pattern_from_file(), init_ralf_vlc(), init_tile(), initFilter(), interpol(), inverse_quant(), is_intra_more_likely(), iterative_me(), kalman_smoothen(), lame_calc_attack_threshold(), lavfi_read_header(), libopenjpeg_copy_to_packed16(), libopenjpeg_copyto16(), libopenjpeg_encode_init(), loas_probe(), long_term_filter(), main(), make_glyphs(), match_format(), matroska_parse_block(), matroska_read_seek(), mc_chroma_dir(), mc_luma_dir(), median4(), mkv_write_header(), mkv_write_packet_internal(), mmap_read_frame(), mmsh_read_seek(), modify_qscale(), mov_build_index(), mov_probe(), mov_update_dts_shift(), mov_write_stsz_tag(), movie_common_init(), mp3_parse_info_tag(), mp3_read_probe(), mp3_seek(), mp3_write_xing(), mp_decode_layer3(), mpc_read_seek(), mpeg_motion_internal(), mpeg_motion_lowres(), mpegts_probe(), mxf_compute_ptses_fake_index(), mxf_edit_unit_absolute_offset(), mxf_read_seek(), noise_enhancer(), nut_write_header(), opengl_get_texture_size(), opus_duration(), output_chunk_list(), output_packet(), paint_mouse_pointer(), parse_adts_frame_header(), parse_commands(), parse_intervals(), parse_media_type(), parse_postfilter(), plot_spectrum_column(), postfilter(), postProcess_TMPL(), pp_postprocess(), print_report(), print_stats(), process_anticollapse(), process_frame_obj(), process_input(), ps_tableinit(), pulse_write_header(), put_codebook_header(), qpel_motion(), quantize_lpc_coefs(), raw_decode(), read_header(), read_huffman_tables(), read_packet(), read_sbr_grid(), read_seek(), read_shape_from_file(), read_var_block_data(), read_whole_file(), render_charset(), resample(), resample_init(), residue_encode(), retry_transfer_wrapper(), roq_dpcm_encode_frame(), rv10_decode_frame(), rv10_decode_packet(), rv34_decode_mv(), rv34_gen_vlc(), sbg_read_header(), sbr_hf_calc_npatches(), sbr_make_f_derived(), sbr_x_gen(), scale_mv(), scale_vector(), search_for_ms(), search_for_quantizers_anmr(), search_for_quantizers_faac(), seek_chapter(), seg_write_packet(), segment_list_open(), select_from_pts_buffer(), select_input_picture(), select_sample_rate(), send_silence(), set_format(), set_sample_rate_params(), set_string_fmt(), silk_decode_frame(), silk_stabilize_lsf(), skip_check(), smjpeg_write_packet(), smv_img_pnt(), stability_factor(), stabilize_lsps(), sub2video_prepare(), swf_read_packet(), swr_convert_internal(), swri_rematrix_init_x86(), sws_diffVec(), sws_init_context(), sws_sumVec(), swscale(), synchronize_audio(), tak_parse(), thp_read_packet(), umh_search(), update_index(), update_stat(), update_stream_timings(), v_block_filter(), var_diamond_search(), vc1_decode_frame(), vertX1Filter_TMPL(), vorbis_packet(), vp8_get_quants(), wmv2_pred_motion(), write_abst(), write_frame(), x11grab_read_header(), x11grab_read_packet(), x8_ac_compensation(), x8_loop_filter(), x8_setup_spatial_compensation(), yae_align(), yae_flush(), yae_overlap_add(), yop_read_seek(), and zmbv_me().

#define FFMAX3 (   a,
  b,
  c 
)    FFMAX(FFMAX(a,b),c)
#define FFMIN (   a,
  b 
)    ((a) > (b) ? (b) : (a))
Examples:
avio_reading.c, demuxing_decoding.c, and transcode_aac.c.

Definition at line 66 of file common.h.

Referenced by a64multi_encode_frame(), aac_encode_frame(), aac_parse_packet(), aasc_decode_init(), ac3_bit_alloc_calc_bap_c(), ac3_decode_frame(), adapt_prob(), add_bell(), add_metadata(), adpcm_ima_compress_sample(), adpcm_yamaha_compress_sample(), adts_aac_probe(), afc_read_packet(), aic_decode_slice(), aiff_read_packet(), alac_decode_close(), alloc_array_elem(), alloc_picture(), allocate_buffers(), amf_tag_contents(), analyze_mono(), analyze_stereo(), ape_decode_frame(), append_packet_chunked(), apply_channel_coupling(), apply_lpc(), apply_ltp(), apply_lut(), apply_pitch_filters(), apply_tns(), array_min_int16(), asf_read_stream_properties(), asfrtp_parse_packet(), audio_get_buffer(), audio_open(), audio_write_packet(), autocorr_max(), av_adler32_update(), av_audio_fifo_drain(), av_audio_fifo_read(), av_bprint_alloc(), av_bprint_append_data(), av_bprint_chars(), av_bprint_finalize(), av_bprint_grow(), av_bprint_init(), av_bprint_strftime(), av_buffer_realloc(), av_fifo_generic_read(), av_fifo_generic_write(), av_find_best_stream(), av_grow_packet(), av_hash_final_b64(), av_hash_final_bin(), av_hash_final_hex(), av_md5_update(), av_parse_color(), av_probe_input_buffer2(), av_probe_input_format3(), av_reduce(), av_resample(), av_resample_init(), av_url_split(), avcodec_decode_subtitle2(), avi_read_header(), avi_read_nikon(), avi_read_seek(), avio_get_str(), avio_read_to_bprint(), avio_seek(), avio_write(), avpriv_find_start_code(), avresample_open(), aw_parse_coords(), await_reference_mb_row(), await_references(), bidir_refine(), blend_frame(), blend_image(), blur_pixel(), bmp_decode_frame(), bmp_parse(), buffer_offset(), build_diff_map(), build_filter(), build_huff(), build_table(), bytestream2_copy_buffer(), bytestream2_get_buffer(), bytestream2_put_buffer(), bytestream2_set_buffer(), bytestream2_skip(), bytestream2_skip_p(), cache_read(), calc_bit_demand(), calc_cpl_coord(), cdg_scroll(), celt_decode_allocation(), celt_decode_band(), celt_decode_bands(), celt_decode_coarse_energy(), channelmap_filter_frame(), check_external_clock_speed(), check_stream_max_drift(), chomp6(), chroma_4mv_motion_lowres(), chrRangeToJpeg16_c(), chrRangeToJpeg_c(), cin_decode_lzss(), cin_decode_rle(), cinepak_decode(), clean_index(), close_output_stream(), cmap_read_palette(), cng_decode_frame(), codeblock(), commit_bitstream_and_slice_buffer(), compand_drain(), compare_fields(), compute_rematrixing_strategy(), compute_target_delay(), config_output(), config_props(), copy_bits(), copy_chapters(), copy_moof(), copy_tag(), count_mantissa_bits_update_ch(), count_pixels(), create(), create_adapt_vect(), crypto_read(), data_read(), dca_decode_frame(), dct_quantize_trellis_c(), decklink_setup_video(), decode_555(), decode_ac_coeffs(), decode_b(), decode_block(), decode_block_refinement(), decode_byterun(), decode_coeffs(), decode_component(), decode_dc_coeffs(), decode_deep_rle32(), decode_deep_tvdc32(), decode_finish_row(), decode_flush(), decode_frame(), decode_frame_headers(), decode_header(), decode_init(), decode_lowdelay_slice(), decode_lspf(), decode_ltp(), decode_mb_i(), decode_mode(), decode_mvc2(), decode_new_pred(), decode_packet(), decode_pixel(), decode_prediction(), decode_rle(), decode_sgirle8(), decode_subframe(), decode_tonal_components(), decorr_mono_buffer(), decorr_stereo_buffer(), decorrelate(), dering_TMPL(), derive_spatial_merge_candidates(), dfa_decode_frame(), direct_search(), dnxhd_encode_rdo(), dnxhd_find_qscale(), dnxhd_mb_var_thread(), do_a_deblock_C(), do_psnr(), do_rematrixing(), do_video_out(), doHorizDefFilter_C(), doVertDefFilter_TMPL(), dpx_parse(), draw_dot(), draw_frame(), draw_mandelbrot(), draw_text(), dsd_ctables_tableinit(), dsf_read_packet(), dump_metadata(), dvb_encode_rle8(), dxa_read_packet(), eightsvx_decode_frame(), encode_ac_coeffs(), encode_acs(), encode_dc_coeffs(), encode_dcs(), encode_dvd_subtitles(), encode_exponents_blk_ch(), encode_ext_header(), encode_frame(), encode_header(), encode_init(), encode_mode(), encode_qlogs(), encode_scalar(), encode_tile(), epzs_motion_search_internal(), estimate_acs(), estimate_dcs(), estimate_sid_gain(), event_loop(), evrc_decode_frame(), execute_code(), extract_header(), extrapolate_isf(), fade_gain(), fbdev_write_packet(), ff_aac_ac3_parse(), ff_ac3_apply_rematrixing(), ff_ac3_bit_alloc_calc_mask(), ff_ac3_bit_alloc_calc_psd(), ff_acelp_reorder_lsf(), ff_af_queue_remove(), ff_alsa_open(), ff_amf_get_field_value(), ff_amf_get_string(), ff_audio_resample_init(), ff_celt_decode_frame(), ff_convert_dither(), ff_copy_and_dup(), ff_dirac_init_arith_decoder(), ff_draw_horiz_band(), ff_eac3_apply_spectral_extension(), ff_emulated_edge_mc(), ff_estimate_p_frame_motion(), ff_filter_frame_needs_framing(), ff_flac_parse_picture(), ff_frame_thread_encoder_init(), ff_frame_thread_init(), ff_get_best_fcode(), ff_get_wav_header(), ff_h264_decode_slice_header(), ff_h264_draw_horiz_band(), ff_hevc_annexb2mp4(), ff_hevc_decode_nal_sps(), ff_hevc_hls_residual_coding(), ff_hevc_ref_idx_lx_decode(), ff_hevc_sao_offset_abs_decode(), ff_hevc_slice_rpl(), ff_init_me(), ff_init_poc(), ff_insert_pad(), ff_isom_write_avcc(), ff_isom_write_hvcc(), ff_jpeg2000_init_component(), ff_jpegls_decode_lse(), ff_jpegls_reset_coding_parameters(), ff_jpegls_update_state_regular(), ff_mjpeg_find_marker(), ff_mms_read_data(), ff_mms_read_header(), ff_mpeg4_encode_mb(), ff_MPV_common_init(), ff_MPV_lowest_referenced_row(), ff_msmpeg4_encode_ext_header(), ff_pca(), ff_poll_frame(), ff_rtmp_packet_write(), ff_rtp_check_and_send_back_rr(), ff_rtp_send_aac(), ff_rtp_send_h263(), ff_rtp_send_h263_rfc2190(), ff_rtp_send_jpeg(), ff_rtp_send_latm(), ff_rtp_send_vp8(), ff_sipr_decode_frame_16k(), ff_slice_thread_init(), ff_spatial_idwt_buffered_slice(), ff_spatial_idwt_slice(), ff_spatial_idwt_slice2(), ff_spdif_probe(), ff_vf_next_put_image(), ff_voc_get_packet(), ff_vorbis_floor1_render_list(), ffio_fill(), ffm_seek1(), fic_draw_cursor(), file_read(), file_write(), fill_picture_rgb(), fill_rectangle(), filter(), filter_common(), filter_frame(), filter_level_for_mb(), find_best_state(), find_frame_end(), find_optimal_param(), flac_fifo_read(), flac_fifo_read_wrap(), flac_parse(), floor_encode(), ftp_seek(), full_search(), g2m_load_cursor(), generate_half_size_image(), generate_intervals(), generate_noise(), get_alpha_data(), get_audio_buffer(), get_available_samples(), get_block_rd(), get_buffer_internal(), get_dc(), get_exponent_dynamic(), get_floor_average(), get_limits(), get_max_p_order(), get_nb_samples(), get_new_centroids(), get_pix_fmt_depth(), get_pix_fmt_score(), get_slice_data(), get_sockaddr(), get_str(), get_symbol(), get_symbol_inline(), get_visual_weight(), gif_image_write_image(), guess_mv(), h264_slice_header_init(), handle_trimming(), hex_log(), hls_decode_neighbour(), hpel_motion_lowres(), hScale16To15_c(), hScale16To19_c(), hScale8To15_c(), hScale8To19_c(), http_read_stream(), http_receive_data(), huffman_decode(), hvcc_parse_sps(), hvcc_parse_vui(), if(), iff_read_packet(), init_long_region(), init_ralf_vlc(), init_tile(), init_tiles(), initFilter(), inter_recon(), intercept_id3(), interleave_new_audio_packet(), interpolate_bilinear(), intra_pred(), intra_recon(), inverse_channel_transform(), inverse_quant(), invert_initial_buffer(), ivi_init_tiles(), join_request_frame(), kalman_smoothen(), kempf_decode_tile(), kset(), lag_decode_line(), lag_decode_zero_run_line(), latm_decode_audio_specific_config(), libopenjpeg_copy_to_packed16(), libopenjpeg_copyto16(), libopus_decode_init(), load_encode_and_write(), loas_probe(), loop_filter(), lowdelay_subband(), lsf_decode_fp(), lumRangeToJpeg16_c(), lumRangeToJpeg_c(), matroska_ebmlnum_uint(), matroska_parse_tracks(), median4(), mjpegb_decode_frame(), mmf_read_packet(), model_calc_threshold(), mov2textsub(), mov_build_index(), mov_read_default(), mov_read_dref(), mov_read_packet(), mov_text_decode_frame(), mov_text_new_line_cb(), mov_text_text_cb(), mov_write_chpl_tag(), mov_write_edts_tag(), mov_write_uuidprof_tag(), movie_request_frame(), mp3_parse_info_tag(), mp3_read_packet(), mp3_update_xing(), mp_decode_frame(), mp_read_changes_map(), mpc8_get_mask(), mpeg4_decode_mb(), mpeg4_decode_sprite_trajectory(), mpeg4_encode_gop_header(), mpeg_decode_slice(), mpeg_motion_lowres(), mpegaudio_parse(), mpegts_handle_packet(), mpegts_probe(), msrle_decode_init(), mss4_init_vlc(), mszh_decomp(), multiple_resample(), mxf_read_packet(), mxf_read_random_index_pack(), mxf_read_seek(), mxpeg_decode_app(), mxpeg_decode_com(), noise_enhancer(), nsv_read_chunk(), nut_write_packet(), ogg_buffer_data(), ogg_packet(), ogm_header(), op(), opengl_get_texture_size(), opengl_prepare_vertex(), opt_default(), opus_decode_frame(), opus_packet(), opus_rc_getsymbol(), opus_rc_laplace(), opus_rc_stepmodel(), opus_rc_trimodel(), opus_rc_unimodel(), output_plane(), pack_yuv(), packed_16bpc_bswap(), paint_mouse_pointer(), param_write_hex(), parse_chunks(), parse_dsd_diin(), parse_psfile(), pcx_palette(), pitch_sharpening(), piz_uncompress(), plot_cqt(), plot_spectrum_column(), png_decode_idat(), png_parse(), postfilter(), postProcess_TMPL(), pp_get_mode_by_name_and_quality(), precalc_coefs(), pred_intra_mode(), predict_slice(), predict_slice_buffered(), print_report(), print_stats(), process_anticollapse(), process_frame(), process_input(), psy_3gpp_init(), push_samples(), put_bitstream_info(), put_symbol(), put_symbol_inline(), pva_read_timestamp(), qcp_read_header(), qdm2_parse_subpacket(), qdm2_restore_block(), qtrle_encode_line(), quantize_bands(), rac_init(), raw_read_packet(), read_access_unit(), read_dcs(), read_from_url(), read_header(), read_packet(), read_seek(), read_var_block_data(), read_whole_file(), reduce_matrix(), region_offset2size(), render_charset(), render_slice(), request_frame(), resample(), resample_init(), return_audio_frame(), rice_decompress(), rm_assemble_video_frame(), rpza_decode_stream(), rtcp_parse_packet(), rtmp_open(), rtmp_packet_read_one_chunk(), rtmp_write(), rtp_send_ilbc(), rtp_send_samples(), rtp_write_header(), rv34_gen_vlc(), sao_filter_CTB(), save_bits(), sbg_read_packet(), sbr_gain_calc(), sbr_make_f_master(), scaleforopp(), scaleforopp_x(), scaleforopp_y(), scaleforsame(), scaling_list_data(), search_for_ms(), search_for_quantizers_anmr(), search_for_quantizers_faac(), search_for_quantizers_fast(), search_for_quantizers_twoloop(), select_frame(), select_palette(), send_silence(), seq_unpack_rle_block(), set_bandwidth(), set_deblocking_bypass(), set_format(), set_string_fmt(), set_tile_offset(), shorten_decode_frame(), significant_coeff_group_flag_decode(), silk_decode_excitation(), silk_lsf2lpc(), silk_stabilize_lsf(), skip_scaling_list_data(), spatial_compensation_1(), spatial_compensation_9(), srt_to_ass(), srtp_open(), stabilize_lsps(), store_icy(), sub_left_prediction(), sub_left_prediction_bgr32(), sub_left_prediction_rgb24(), subfile_read(), subframe_count_exact(), subimage_with_fill(), subsampling_bounds(), super2xsai(), svq3_decode_mb(), svq3_get_ue_golomb(), swr_convert(), swr_convert_internal(), swri_resample(), swscale(), synchronize_audio(), synth_frame(), synthesis(), tak_parse(), targa_decode_rle(), tgq_decode_mb(), tiff_decode_tag(), to_meta_with_crop(), umh_search(), unpack(), unpack_coeffs(), unpack_yuv(), update_dimensions(), update_stat(), update_stream_timings(), url_find_protocol(), val(), var_diamond_search(), vc1_decode_frame(), vc1_filter_line(), video_audio_display(), video_open(), video_refresh(), vorbis_parse_setup_hdr_residues(), vp5_parse_coeff(), vp6_parse_coeff_huffman(), vp78_decode_frame(), vp7_get_quants(), vp8_get_quants(), vpx_init(), vqf_read_header(), wiener_denoise(), write_manifest(), write_subframes(), writer_print_data(), wtvfile_read_packet(), wv_mono(), wv_stereo(), x11grab_read_header(), x11grab_read_packet(), x8_get_prediction(), x8_loop_filter(), x8_setup_spatial_compensation(), xan_decode_frame(), xan_decode_frame_type0(), xan_wc3_output_pixel_run(), xmv_fetch_audio_packet(), xsub_encode_rle(), xwma_read_packet(), yae_align(), yae_flush(), yae_load_data(), yae_load_frag(), yae_overlap_add(), yop_read_seek(), and zmbv_me().

#define FFMIN3 (   a,
  b,
  c 
)    FFMIN(FFMIN(a,b),c)
#define FFSWAP (   type,
  a,
  b 
)    do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)

Definition at line 69 of file common.h.

Referenced by add_cb(), at1_imdct(), at1_imdct_block(), av_aes_init(), av_rc4_crypt(), av_rc4_init(), cbr_bit_allocation(), cinepak_encode_frame(), cinvideo_decode_frame(), compute_pkt_fields(), compute_pkt_fields2(), decode_band(), decode_bytes_and_gain(), decode_cell_data(), decode_frame(), decode_pic(), decode_residual_spectrum(), decode_tones_info(), decorrelate(), do_swap(), draw_arrow(), draw_char(), draw_line(), draw_mandelbrot(), dvbsub_decode(), encode_frame(), escape130_decode_frame(), ff_acelp_reorder_lsf(), ff_atrac3p_imdct(), ff_ccitt_unpack(), ff_celp_lp_synthesis_filterf(), ff_eval_coefs(), ff_eval_refl(), ff_filter_graph_remove_filter(), ff_h263_decode_frame(), ff_hevc_hls_residual_coding(), ff_merge_channel_layouts(), ff_mjpeg_decode_frame(), ff_sort_nearly_sorted_floats(), ff_twinvq_decode_frame(), ff_vp56_decode_mbs(), filter_frame(), g722_encode_trellis(), get_channel_weights(), getsigctxno(), heap_sift(), imlt(), init_dict(), ipvideo_decode_frame(), luma_intra_pred_mode(), main(), make_lpc_coefs(), mc_subpel(), mp3_header_decompress(), mss2_decode_frame(), nelly_decode_block(), on2avc_reconstruct_stereo(), png_choose_filter(), png_handle_row(), postfilter(), ra144_decode_frame(), ra144_encode_frame(), raw_decode(), rd_frame(), read_restart_header(), read_tree(), reconstruct_frame(), rm_ac3_swap_bytes(), roq_decode_frame(), roq_encode_video(), rotate_bufs(), select_palette(), sniff_channel_order(), sort_stt(), svq1_encode_frame(), svq3_decode_frame(), swap_channel_layouts_on_filter(), swap_sample_fmts_on_filter(), swap_samplerates_on_filter(), switch_buffers(), transcode_subtitles(), update_initial_timestamps(), vc1_decode_frame(), vdpau_retrieve_data(), and vp8_decode_mvs().

#define FF_ARRAY_ELEMS (   a)    (sizeof(a) / sizeof((a)[0]))

Definition at line 70 of file common.h.

#define FFALIGN (   x,
  a 
)    (((x)+(a)-1)&~((a)-1))

Definition at line 71 of file common.h.

Referenced by add_frame_default(), aic_decode_frame(), aic_decode_init(), alloc_metrics(), alloc_scratch_buffers(), alloc_sequence_buffers(), allocate_frame_buffers(), ape_decode_frame(), apply_channel_coupling(), atrac3_decode_init(), av_get_audio_frame_duration(), av_image_alloc(), av_image_copy_to_buffer(), av_image_fill_arrays(), av_samples_get_buffer_size(), avcodec_align_dimensions(), avcodec_align_dimensions2(), backward_filter(), cdxl_decode_frame(), cdxl_read_packet(), codec_reinit(), config_input(), config_props(), convert_samples(), copy_frame_default(), cyuv_decode_frame(), decode_frame(), decode_i2_frame(), decode_init(), decode_pic(), dirac_decode_frame_internal(), do_hybrid_window(), doTest(), dxtory_decode_v2_410(), dxtory_decode_v2_420(), dxtory_decode_v2_444(), dxtory_decode_v2_565(), dxtory_decode_v2_rgb(), dxva2_create_decoder(), encode_frame(), encode_init(), estimate_slice_plane(), ff_audio_mix(), ff_celt_decode_frame(), ff_convert_dither(), ff_end_tag(), ff_ivi_init_planes(), ff_lpc_calc_coefs(), ff_lpc_init(), ff_mss12_decode_init(), ff_spdif_read_packet(), ff_vc1_decode_init_alloc_tables(), ff_vc1_parse_frame_header_adv(), fic_decode_frame(), fic_decode_init(), filter(), filter_frame(), flv_write_packet(), frame_size_alloc(), g2m_init_buffers(), g2m_load_cursor(), generate_dither_noise(), get_max_frame_size(), get_video_buffer(), hcscale(), if(), init_dimensions(), init_lengths(), init_planes(), init_sizes(), jpg_decode_data(), kempf_decode_tile(), lag_decode_frame(), load_input_picture(), mp3lame_encode_frame(), mpeg_decode_postinit(), msrle_decode_frame(), mss4_decode_frame(), mss4_decode_init(), open_filter_param(), opus_decode_packet(), output_frame(), paf_video_init(), pcm_bluray_decode_frame(), pcm_bluray_parse_header(), pp_filter_frame(), pp_get_context(), prores_encode_frame(), put_meta(), qdm2_calculate_fft(), raw_decode(), raw_init_decoder(), read_table(), resample_init(), saturate_output_float(), send_command_packet(), set_sample_rate_params(), sox_write_header(), spdif_header_dts4(), spdif_write_packet(), sunrast_encode_init(), svq1_decode_frame(), swf_read_packet(), swri_realloc_audio(), sws_init_context(), tgq_decode_frame(), tscc2_decode_init(), utvideo_encode_init(), vp3_decode_init(), vp6_parse_header(), xsub_encode(), xwd_decode_frame(), xwd_encode_frame(), and y216_decode_frame().

#define MKTAG (   a,
  b,
  c,
 
)    ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))

Definition at line 290 of file common.h.

Referenced by aasc_decode_frame(), aiff_read_header(), aiff_write_header(), amr_read_header(), ape_probe(), ape_read_header(), asf_read_stream_properties(), ast_probe(), ast_read_packet(), avi_extract_stream_metadata(), avi_load_index(), avi_read_header(), avi_read_nikon(), avi_write_packet(), avpriv_flac_is_extradata_valid(), avr_probe(), bfi_probe(), bfi_read_packet(), caf_write_header(), cine_read_header(), cllc_decode_frame(), daud_header(), decode_frame(), decode_init(), decode_wave_header(), dfa_probe(), dfa_read_header(), dfa_read_packet(), dirac_probe(), dpx_parse(), dsf_read_header(), dshow_add_device(), dxa_read_header(), dxa_read_packet(), dxva2_create_decoder(), encode_frame(), epaf_probe(), export_orphan_timecode(), ff_h264_decode_seq_parameter_set(), ff_mjpeg_decode_sos(), ff_mov_init_hinting(), ff_rm_read_mdpr_codecdata(), ff_wv_parse_header(), ffio_wfourcc(), ffm_read_header(), ffm_write_header(), flac_read_header(), get_codec_data(), iff_read_header(), ingenient_read_packet(), init_file(), init_multbl2(), init_muxer(), ipod_get_codec_tag(), is_clcp_track(), libspeex_decode_init(), lvf_probe(), lvf_read_header(), lvf_read_packet(), matroska_parse_wavpack(), mmf_read_header(), mov_codec_id(), mov_create_chapter_track(), mov_create_timecode_track(), mov_finalize_stsd_codec(), mov_find_codec_tag(), mov_free(), mov_get_codec_tag(), mov_get_dv_codec_tag(), mov_get_mpeg2_xdcam_codec_tag(), mov_get_rawvideo_codec_tag(), mov_parse_stsd_audio(), mov_parse_stsd_data(), mov_parse_stsd_video(), mov_probe(), mov_read_ares(), mov_read_cmov(), mov_read_custom(), mov_read_custom_2plus(), mov_read_default(), mov_read_dref(), mov_read_glbl(), mov_read_hdlr(), mov_read_meta(), mov_read_sbgp(), mov_read_stco(), mov_read_stsz(), mov_read_udta_string(), mov_read_wide(), mov_skip_multiple_stsd(), mov_write_audio_tag(), mov_write_gmhd_tag(), mov_write_hdlr_tag(), mov_write_header(), mov_write_minf_tag(), mov_write_moov_tag(), mov_write_stbl_tag(), mov_write_stsd_tag(), mov_write_trak_tag(), mov_write_video_tag(), mp4_get_codec_tag(), mpc_read_header(), msnwc_tcp_probe(), msnwc_tcp_read_header(), nsv_parse_NSVf_header(), nsv_read_chunk(), open_output_file(), parse_dsd_diin(), parse_dsd_prop(), parse_ffconfig(), parse_fragment(), png_write_row(), probe(), put_id3v2_tags(), qcp_read_packet(), qt_rtp_parse_packet(), query_codec(), r3d_probe(), r3d_read_header(), r3d_read_packet(), raw_decode(), raw_init_decoder(), rdt_load_mdpr(), read_desc_chunk(), read_header(), rm_read_header(), rm_read_index(), scan_file(), sdr2_probe(), siff_parse_vbv1(), siff_read_header(), smacker_probe(), smacker_read_header(), smush_read_probe(), sol_read_header(), start_command_packet(), tak_read_header(), thp_probe(), tta_probe(), utvideo_decode_init(), utvideo_encode_init(), v4l2_read_header(), vfw_codecid(), vfw_pixfmt(), vfw_read_header(), vid_probe(), vp3_decode_init(), vqf_probe(), vqf_read_header(), wavesynth_init(), wavpack_encode_block(), webp_decode_frame(), write_abst(), wv_probe(), xsub_encoder_init(), xwma_read_header(), zero12v_decode_frame(), and zero12v_decode_init().

#define MKBETAG (   a,
  b,
  c,
 
)    ((d) | ((c) << 8) | ((b) << 16) | ((unsigned)(a) << 24))
#define GET_UTF8 (   val,
  GET_BYTE,
  ERROR 
)
Value:
val= GET_BYTE;\
{\
uint32_t top = (val & 128) >> 1;\
if ((val & 0xc0) == 0x80 || val >= 0xFE)\
ERROR\
while (val & top) {\
int tmp= GET_BYTE - 128;\
if(tmp>>6)\
ERROR\
val= (val<<6) + tmp;\
top <<= 5;\
}\
val &= (top << 1) - 1;\
}

Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.

Parameters
valOutput value, must be an lvalue of type uint32_t.
GET_BYTEExpression reading one byte from the input. Evaluated up to 7 times (4 for the currently assigned Unicode range). With a memory buffer input, this could be *ptr++.
ERRORExpression to be evaluated on invalid input, typically a goto statement.
Warning
ERROR should not contain a loop control statement which could interact with the internal while loop, and should force an exit from the macro code (e.g. through a goto or a return) in order to prevent undefined results.

Definition at line 309 of file common.h.

Referenced by ascii_to_wc(), avio_put_str16le(), draw_glyphs(), draw_text(), get_utf8(), utf8_check(), and utf8len().

#define GET_UTF16 (   val,
  GET_16BIT,
  ERROR 
)
Value:
val = GET_16BIT;\
{\
unsigned int hi = val - 0xD800;\
if (hi < 0x800) {\
val = GET_16BIT - 0xDC00;\
if (val > 0x3FFU || hi > 0x3FFU)\
ERROR\
val += (hi<<10) + 0x10000;\
}\
}\

Convert a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form.

Parameters
valOutput value, must be an lvalue of type uint32_t.
GET_16BITExpression returning two bytes of UTF-16 data converted to native byte order. Evaluated one or two times.
ERRORExpression to be evaluated on invalid input, typically a goto statement.

Definition at line 334 of file common.h.

Referenced by decode_str().

#define PUT_UTF8 (   val,
  tmp,
  PUT_BYTE 
)
Value:
{\
int bytes, shift;\
uint32_t in = val;\
if (in < 0x80) {\
tmp = in;\
PUT_BYTE\
} else {\
bytes = (av_log2(in) + 4) / 5;\
shift = (bytes - 1) * 6;\
tmp = (256 - (256 >> bytes)) | (in >> shift);\
PUT_BYTE\
while (shift >= 6) {\
shift -= 6;\
tmp = 0x80 | ((in >> shift) & 0x3f);\
PUT_BYTE\
}\
}\
}

Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long).

Parameters
valis an input-only argument and should be of type uint32_t. It holds a UCS-4 encoded Unicode character that is to be converted to UTF-8. If val is given as a function it is executed only once.
tmpis a temporary variable and should be of type uint8_t. It represents an intermediate value during conversion that is to be output by PUT_BYTE.
PUT_BYTEwrites the converted UTF-8 bytes to any proper destination. It could be a function or a statement, and uses tmp as the input byte. For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be executed up to 4 times for values in the valid UTF-8 range and up to 7 times in the general case, depending on the length of the converted Unicode character.

Definition at line 362 of file common.h.

Referenced by count_frame_header(), decode_str(), mov_read_mac_string(), and write_utf8().

#define PUT_UTF16 (   val,
  tmp,
  PUT_16BIT 
)
Value:
{\
uint32_t in = val;\
if (in < 0x10000) {\
tmp = in;\
PUT_16BIT\
} else {\
tmp = 0xD800 | ((in - 0x10000) >> 10);\
PUT_16BIT\
tmp = 0xDC00 | ((in - 0x10000) & 0x3FF);\
PUT_16BIT\
}\
}\

Convert a 32-bit Unicode character to its UTF-16 encoded form (2 or 4 bytes).

Parameters
valis an input-only argument and should be of type uint32_t. It holds a UCS-4 encoded Unicode character that is to be converted to UTF-16. If val is given as a function it is executed only once.
tmpis a temporary variable and should be of type uint16_t. It represents an intermediate value during conversion that is to be output by PUT_16BIT.
PUT_16BITwrites the converted UTF-16 data to any proper destination in desired endianness. It could be a function or a statement, and uses tmp as the input byte. For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be executed 1 or 2 times depending on input character.

Definition at line 396 of file common.h.

Referenced by avio_put_str16le().

Function Documentation

static av_always_inline av_const int av_clip_c ( int  a,
int  amin,
int  amax 
)
static

Clip a signed integer value into the amin-amax range.

Parameters
avalue to clip
aminminimum value of the clip range
amaxmaximum value of the clip range
Returns
clipped value

Definition at line 105 of file common.h.

Referenced by flac_write_header(), rgb48Toxyz12(), and xyz12Torgb48().

static av_always_inline av_const int64_t av_clip64_c ( int64_t  a,
int64_t  amin,
int64_t  amax 
)
static

Clip a signed 64bit integer value into the amin-amax range.

Parameters
avalue to clip
aminminimum value of the clip range
amaxmaximum value of the clip range
Returns
clipped value

Definition at line 122 of file common.h.

static av_always_inline av_const uint8_t av_clip_uint8_c ( int  a)
static

Clip a signed integer value into the 0-255 range.

Parameters
avalue to clip
Returns
clipped value

Definition at line 137 of file common.h.

static av_always_inline av_const int8_t av_clip_int8_c ( int  a)
static

Clip a signed integer value into the -128,127 range.

Parameters
avalue to clip
Returns
clipped value

Definition at line 148 of file common.h.

static av_always_inline av_const uint16_t av_clip_uint16_c ( int  a)
static

Clip a signed integer value into the 0-65535 range.

Parameters
avalue to clip
Returns
clipped value

Definition at line 159 of file common.h.

static av_always_inline av_const int16_t av_clip_int16_c ( int  a)
static

Clip a signed integer value into the -32768,32767 range.

Parameters
avalue to clip
Returns
clipped value

Definition at line 170 of file common.h.

Referenced by vector_fmul_window_fixed_scaled_c().

static av_always_inline av_const int32_t av_clipl_int32_c ( int64_t  a)
static

Clip a signed 64-bit integer value into the -2147483648,2147483647 range.

Parameters
avalue to clip
Returns
clipped value

Definition at line 181 of file common.h.

static av_always_inline av_const unsigned av_clip_uintp2_c ( int  a,
int  p 
)
static

Clip a signed integer to an unsigned power of two range.

Parameters
avalue to clip
pbit position to clip at
Returns
clipped value

Definition at line 193 of file common.h.

static av_always_inline int av_sat_add32_c ( int  a,
int  b 
)
static

Add two signed 32-bit values with saturation.

Parameters
aone value
banother value
Returns
sum with signed saturation

Definition at line 206 of file common.h.

static av_always_inline int av_sat_dadd32_c ( int  a,
int  b 
)
static

Add a doubled value to another value with saturation at both stages.

Parameters
afirst value
bvalue doubled and added to a
Returns
sum with signed saturation

Definition at line 218 of file common.h.

static av_always_inline av_const float av_clipf_c ( float  a,
float  amin,
float  amax 
)
static

Clip a float value into the amin-amax range.

Parameters
avalue to clip
aminminimum value of the clip range
amaxmaximum value of the clip range
Returns
clipped value

Definition at line 230 of file common.h.

static av_always_inline av_const double av_clipd_c ( double  a,
double  amin,
double  amax 
)
static

Clip a double value into the amin-amax range.

Parameters
avalue to clip
aminminimum value of the clip range
amaxmaximum value of the clip range
Returns
clipped value

Definition at line 247 of file common.h.

static av_always_inline av_const int av_ceil_log2_c ( int  x)
static

Compute ceil(log2(x)).

Parameters
xvalue used to compute ceil(log2(x))
Returns
computed ceiling of log2(x)

Definition at line 261 of file common.h.

Referenced by parse_nal_units().

static av_always_inline av_const int av_popcount_c ( uint32_t  x)
static

Count number of bits set to one in x.

Parameters
xvalue to count bits of
Returns
the number of bits set to one in x

Definition at line 271 of file common.h.

static av_always_inline av_const int av_popcount64_c ( uint64_t  x)
static

Count number of bits set to one in x.

Parameters
xvalue to count bits of
Returns
the number of bits set to one in x

Definition at line 285 of file common.h.

Variable Documentation

attribute_deprecated const uint8_t av_reverse[256]

Reverse the order of the bits of an 8-bits unsigned integer.

Definition at line 35 of file mathematics.c.

Referenced by eval_expr().