FFmpeg
Data Structures | Macros | Enumerations | Functions | Variables
vf_curves.c File Reference
#include "libavutil/opt.h"
#include "libavutil/bprint.h"
#include "libavutil/eval.h"
#include "libavutil/file.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/avassert.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct  keypoint
 
struct  CurvesContext
 
struct  ThreadData
 Used for passing data between threads. More...
 

Macros

#define R   0
 
#define G   1
 
#define B   2
 
#define A   3
 
#define NB_COMP   3
 
#define OFFSET(x)   offsetof(CurvesContext, x)
 
#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
 
#define CLIP(v)   (nbits == 8 ? av_clip_uint8(v) : av_clip_uintp2_c(v, nbits))
 Natural cubic spline interpolation Finding curves using Cubic Splines notes by Steven Rauch and John Stockie. More...
 
#define BD   0 /* sub diagonal (below main) */
 
#define MD   1 /* main diagonal (center) */
 
#define AD   2 /* sup diagonal (above main) */
 
#define DECLARE_INTERPOLATE_FUNC(nbits)
 
#define READ16(dst)
 
#define SET_COMP_IF_NOT_SET(n, name)
 

Enumerations

enum  preset {
  PRESET_NONE, PRESET_COLOR_NEGATIVE, PRESET_CROSS_PROCESS, PRESET_DARKER,
  PRESET_INCREASE_CONTRAST, PRESET_LIGHTER, PRESET_LINEAR_CONTRAST, PRESET_MEDIUM_CONTRAST,
  PRESET_NEGATIVE, PRESET_STRONG_CONTRAST, PRESET_VINTAGE, NB_PRESETS
}
 

Functions

 AVFILTER_DEFINE_CLASS (curves)
 
static struct keypointmake_point (double x, double y, struct keypoint *next)
 
static int parse_points_str (AVFilterContext *ctx, struct keypoint **points, const char *s, int lut_size)
 
static int get_nb_points (const struct keypoint *d)
 
static int interpolate (void *log_ctx, uint16_t *y, const struct keypoint *points, int nbits)
 
static int parse_psfile (AVFilterContext *ctx, const char *fname)
 
static int dump_curves (const char *fname, uint16_t *graph[NB_COMP+1], struct keypoint *comp_points[NB_COMP+1], int lut_size)
 
static av_cold int curves_init (AVFilterContext *ctx)
 
static int query_formats (AVFilterContext *ctx)
 
static int filter_slice_packed (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
 
static int filter_slice_planar (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
 
static int config_input (AVFilterLink *inlink)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *in)
 
static int process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
 
static av_cold void curves_uninit (AVFilterContext *ctx)
 

Variables

static const AVOption curves_options []
 
struct {
   const char *   r
 
   const char *   g
 
   const char *   b
 
   const char *   master
 
curves_presets []
 
static const AVFilterPad curves_inputs []
 
static const AVFilterPad curves_outputs []
 
const AVFilter ff_vf_curves
 

Macro Definition Documentation

◆ R

#define R   0

Definition at line 34 of file vf_curves.c.

◆ G

#define G   1

Definition at line 35 of file vf_curves.c.

◆ B

#define B   2

Definition at line 36 of file vf_curves.c.

◆ A

#define A   3

Definition at line 37 of file vf_curves.c.

◆ NB_COMP

#define NB_COMP   3

Definition at line 44 of file vf_curves.c.

◆ OFFSET

#define OFFSET (   x)    offsetof(CurvesContext, x)

Definition at line 84 of file vf_curves.c.

◆ FLAGS

Definition at line 85 of file vf_curves.c.

◆ CLIP

#define CLIP (   v)    (nbits == 8 ? av_clip_uint8(v) : av_clip_uintp2_c(v, nbits))

Natural cubic spline interpolation Finding curves using Cubic Splines notes by Steven Rauch and John Stockie.

See also
http://people.math.sfu.ca/~stockie/teaching/macm316/notes/splines.pdf

Definition at line 217 of file vf_curves.c.

◆ BD

#define BD   0 /* sub diagonal (below main) */

◆ MD

#define MD   1 /* main diagonal (center) */

◆ AD

#define AD   2 /* sup diagonal (above main) */

◆ DECLARE_INTERPOLATE_FUNC

#define DECLARE_INTERPOLATE_FUNC (   nbits)
Value:
static int interpolate##nbits(void *log_ctx, uint16_t *y, \
const struct keypoint *points) \
{ \
return interpolate(log_ctx, y, points, nbits); \
}

Definition at line 341 of file vf_curves.c.

◆ READ16

#define READ16 (   dst)
Value:
do { \
if (size < 2) { \
goto end; \
} \
dst = AV_RB16(buf); \
buf += 2; \
size -= 2; \
} while (0)

◆ SET_COMP_IF_NOT_SET

#define SET_COMP_IF_NOT_SET (   n,
  name 
)
Value:
do { \
if (!pts[n] && curves_presets[curves->preset].name) { \
pts[n] = av_strdup(curves_presets[curves->preset].name); \
if (!pts[n]) \
return AVERROR(ENOMEM); \
} \
} while (0)

Enumeration Type Documentation

◆ preset

enum preset
Enumerator
PRESET_NONE 
PRESET_COLOR_NEGATIVE 
PRESET_CROSS_PROCESS 
PRESET_DARKER 
PRESET_INCREASE_CONTRAST 
PRESET_LIGHTER 
PRESET_LINEAR_CONTRAST 
PRESET_MEDIUM_CONTRAST 
PRESET_NEGATIVE 
PRESET_STRONG_CONTRAST 
PRESET_VINTAGE 
NB_PRESETS 

Definition at line 46 of file vf_curves.c.

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( curves  )

◆ make_point()

static struct keypoint* make_point ( double  x,
double  y,
struct keypoint next 
)
static

Definition at line 145 of file vf_curves.c.

Referenced by parse_points_str().

◆ parse_points_str()

static int parse_points_str ( AVFilterContext ctx,
struct keypoint **  points,
const char *  s,
int  lut_size 
)
static

Definition at line 157 of file vf_curves.c.

Referenced by config_input().

◆ get_nb_points()

static int get_nb_points ( const struct keypoint d)
static

Definition at line 201 of file vf_curves.c.

Referenced by interpolate().

◆ interpolate()

static int interpolate ( void *  log_ctx,
uint16_t *  y,
const struct keypoint points,
int  nbits 
)
inlinestatic

Definition at line 219 of file vf_curves.c.

◆ parse_psfile()

static int parse_psfile ( AVFilterContext ctx,
const char *  fname 
)
static

Definition at line 355 of file vf_curves.c.

Referenced by curves_init().

◆ dump_curves()

static int dump_curves ( const char *  fname,
uint16_t *  graph[NB_COMP+1],
struct keypoint comp_points[NB_COMP+1],
int  lut_size 
)
static

Definition at line 411 of file vf_curves.c.

Referenced by config_input().

◆ curves_init()

static av_cold int curves_init ( AVFilterContext ctx)
static

Definition at line 472 of file vf_curves.c.

Referenced by process_command().

◆ query_formats()

static int query_formats ( AVFilterContext ctx)
static

Definition at line 516 of file vf_curves.c.

◆ filter_slice_packed()

static int filter_slice_packed ( AVFilterContext ctx,
void *  arg,
int  jobnr,
int  nb_jobs 
)
static

Definition at line 540 of file vf_curves.c.

Referenced by config_input().

◆ filter_slice_planar()

static int filter_slice_planar ( AVFilterContext ctx,
void *  arg,
int  jobnr,
int  nb_jobs 
)
static

Definition at line 588 of file vf_curves.c.

Referenced by config_input().

◆ config_input()

static int config_input ( AVFilterLink inlink)
static

Definition at line 654 of file vf_curves.c.

Referenced by process_command().

◆ filter_frame()

static int filter_frame ( AVFilterLink inlink,
AVFrame in 
)
static

Definition at line 724 of file vf_curves.c.

◆ process_command()

static int process_command ( AVFilterContext ctx,
const char *  cmd,
const char *  args,
char *  res,
int  res_len,
int  flags 
)
static

Definition at line 753 of file vf_curves.c.

◆ curves_uninit()

static av_cold void curves_uninit ( AVFilterContext ctx)
static

Definition at line 789 of file vf_curves.c.

Variable Documentation

◆ curves_options

const AVOption curves_options[]
static
Initial value:
= {
{ "preset", "select a color curves preset", OFFSET(preset), AV_OPT_TYPE_INT, {.i64=PRESET_NONE}, PRESET_NONE, NB_PRESETS-1, FLAGS, "preset_name" },
{ "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_NONE}, 0, 0, FLAGS, "preset_name" },
{ "color_negative", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_COLOR_NEGATIVE}, 0, 0, FLAGS, "preset_name" },
{ "cross_process", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_CROSS_PROCESS}, 0, 0, FLAGS, "preset_name" },
{ "darker", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_DARKER}, 0, 0, FLAGS, "preset_name" },
{ "increase_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_INCREASE_CONTRAST}, 0, 0, FLAGS, "preset_name" },
{ "lighter", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_LIGHTER}, 0, 0, FLAGS, "preset_name" },
{ "linear_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_LINEAR_CONTRAST}, 0, 0, FLAGS, "preset_name" },
{ "medium_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_MEDIUM_CONTRAST}, 0, 0, FLAGS, "preset_name" },
{ "negative", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_NEGATIVE}, 0, 0, FLAGS, "preset_name" },
{ "strong_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_STRONG_CONTRAST}, 0, 0, FLAGS, "preset_name" },
{ "vintage", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_VINTAGE}, 0, 0, FLAGS, "preset_name" },
{ "master","set master points coordinates",OFFSET(comp_points_str[NB_COMP]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "m", "set master points coordinates",OFFSET(comp_points_str[NB_COMP]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "red", "set red points coordinates", OFFSET(comp_points_str[0]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "r", "set red points coordinates", OFFSET(comp_points_str[0]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "green", "set green points coordinates", OFFSET(comp_points_str[1]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "g", "set green points coordinates", OFFSET(comp_points_str[1]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "blue", "set blue points coordinates", OFFSET(comp_points_str[2]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "b", "set blue points coordinates", OFFSET(comp_points_str[2]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "all", "set points coordinates for all components", OFFSET(comp_points_str_all), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "psfile", "set Photoshop curves file name", OFFSET(psfile), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "plot", "save Gnuplot script of the curves in specified file", OFFSET(plot_filename), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ NULL }
}

Definition at line 86 of file vf_curves.c.

◆ r

const char* r

Definition at line 116 of file vf_curves.c.

Referenced by aax_read_header(), add_bell(), add_hfyu_left_pred_bgr32_c(), aes_crypt(), alloc_frame_buffer(), allocate_plane(), amqp_proto_open(), autoregression(), av_inv_q(), av_make_q(), av_rc4_crypt(), av_rc4_init(), av_realloc_f(), av_rescale_rnd(), av_size_mult(), avcodec_default_execute(), avcodec_default_execute2(), avfilter_graph_request_oldest(), avfilter_graph_send_command(), avpriv_set_systematic_pal2(), bessel(), block_matching_multi(), bprint_color(), butterworth_bp_filter(), cache_read(), calc_add_mv(), cdg_load_palette(), cdtoons_decode_frame(), cdxl_decode_ham6(), cdxl_decode_ham8(), celt_lpc(), chebyshev1_bp_filter(), chebyshev2_bp_filter(), check_slice_end(), checkasm_check_nlmeans(), choose_rct_params(), cinepak_decode_codebook(), cng_decode_frame(), color_balance16(), color_balance16_p(), color_balance8(), color_balance8_p(), color_correlation(), color_decorrelation(), color_distance(), color_get(), color_hash(), colorcontrast_slice16(), colorcontrast_slice16p(), colorcontrast_slice8(), colorcontrast_slice8p(), compress_color(), compute_gru(), compute_lpc_coefs(), compute_unsafe_ssd_integral_image(), config_input(), config_output(), config_props(), constrain_rgb(), convert(), convert_pd2zp(), convert_pr2zp(), convert_timestamp(), count_colors(), cqt_calc(), curves_init(), debug_accuracy(), decipher(), decode_argb(), decode_argbi(), decode_argx(), decode_argxi(), decode_block_coeffs_internal(), decode_byterun2(), decode_delta_j(), decode_frame(), decode_frame_header(), decode_hybrid(), decode_init(), decode_mvc2(), decode_pal(), decode_plte_chunk(), decode_raw_intra_rgb(), decode_refpass(), decode_residual_block(), decode_rgb(), decode_rgb_frame_TMPL(), decode_rgbi(), decode_rgbx(), decode_rgbxi(), decode_rice(), decode_run_i(), decode_run_p(), decode_signed_subexp_with_ref(), decode_units(), decode_unsigned_subexp_with_ref(), decode_value3(), decompose_transform(), decompress_i(), decompress_i3(), decompress_p(), decompress_p3(), default_execute(), do_colorhold_slice(), do_colorkey_pixel(), doTest(), draw_rectangle(), draw_spatial(), dshow_cycle_devices(), dshow_cycle_formats(), dshow_cycle_pins(), dshow_list_device_options(), dshow_open_device(), dshow_read_close(), dshow_read_header(), dump_spherical(), dv_read_seek(), dvbsub_encode(), dvbsub_parse_clut_segment(), dx2_decode_slice_5x5(), encipher(), encode_frame(), encode_rgb_frame_TMPL(), encode_scalar(), encode_thread(), equisolid_to_xyz(), eval_expr(), expand_script(), expand_tseq(), f_func(), ff_alsa_extend_reorder_buf(), ff_big_div(), ff_els_decode_unsigned(), ff_get_qtpalette(), ff_gmc_c(), ff_jpegls_decode_picture(), ff_lag_rac_init(), ff_mjpeg_receive_frame(), ff_png_filter_row(), ff_rgb24toyv12_c(), ff_rtp_handler_iterate(), ff_rtp_send_h264_hevc(), ff_rtp_send_mpegvideo(), ff_rv34_decode_end(), ff_rv34_decode_frame(), ff_rv34_decode_init(), ff_rv34_decode_update_thread_context(), ff_text_eof(), ff_text_init_avio(), ff_text_init_buf(), ff_text_peek_r8(), ff_text_pos(), ff_text_r8(), ff_text_read(), fileTest(), fill_in_tongue(), fill_picture_parameters(), fill_slice_long(), filter(), filter_frame(), filter_rgb24(), filter_rgb48(), filter_rgba(), filter_rgba64(), filter_slice_grey_edge(), filter_slice_packed(), filter_slice_planar(), find_ref_mvs(), finish_frame(), flic_decode_frame_8BPP(), frac64(), frand(), gamma_convert(), gamma_correct_rgb(), gdv_decode_frame(), gdv_read_header(), gen_image(), gen_sub_bitmap(), generate_interval(), generate_intervals(), generate_joint_tables(), generate_plateau(), generate_transition(), get_avg_color(), get_cmy_scale(), get_dst_color_err(), get_high_utility_cell(), get_max_component_diff(), get_next_color(), get_palette_frame(), get_rgb_scale(), get_symbol2(), get_tree_codes(), gfmul(), guess_palette(), guess_status_pts(), h263_handle_packet(), hdcd_analyze_gen(), hls_init(), hls_start(), hpel_motion_search(), hsl2rgb(), huff_reader_build_canonical(), huff_reader_get_symbol(), idcin_read_packet(), idct_col2(), idct_row(), import_palette(), init(), init_axis_color(), init_default_clut(), interpolate(), inv_cdf(), inverse_recenter(), iterative_me(), jp2_find_codestream(), lex_char(), lex_double(), lex_time(), loco_get_rice(), loco_get_rice_param(), loco_update_rice_param(), ls_decode_line(), magy_decode_slice(), magy_decode_slice10(), magy_encode_frame(), main(), make_cdt15_entry(), make_cdt16_entry(), make_cdt24_entry(), mc_block(), modplug_read_header(), monochrome_slice16(), monochrome_slice8(), mov_estimate_video_delay(), mov_read_sv3d(), mov_write_video_tag(), mp_yuv_to_rgb(), mpeg4_decode_sprite_trajectory(), mpegts_push_data(), mss2_blit_wmv9_template(), mss2_decode_frame(), MULH(), nlmeans_plane(), on2avc_apply_ms(), opt_list(), optimize_colors(), orthographic_to_xyz(), paf_video_decode(), parse_3dl(), parse_block_def(), parse_ifo_palette(), parse_optarg(), parse_options(), parse_palette(), parse_palette_segment(), parse_pixel_format(), parse_points(), parse_script(), parse_synth_channel(), parse_synth_def(), parse_time_sequence(), parse_timestamp(), pitch_filter(), pix_abs16x16_x2_mvi(), pnm_decode_frame(), pnm_encode_frame(), pop_integer(), pow_poly(), premult2straight(), preservel(), print_pkt_side_data(), process_anticollapse(), process_bayer(), process_ipmovie_chunk(), ps_stereo_interpolate_c(), ps_stereo_interpolate_ipdopd_c(), pulse_read_packet(), pulse_write_packet(), push_integer(), put_pixel(), put_symbol2(), put_vc1_mspel_mc_h_v_msa(), qpel_motion_search(), rand64(), rd_frame(), read_bits(), read_data(), read_global_param(), read_var_block_data(), read_whole_file(), refine_colors(), request_frame(), restore_rgb_planes10_c(), restore_rgb_planes_c(), rgb12to15(), rgb24_to_rgb555(), rgb24_to_yuv420p(), rgb24to15_c(), rgb24to15_TMPL(), rgb24to16_c(), rgb24to16_TMPL(), rgb24tobgr15_c(), rgb24tobgr15_TMPL(), rgb24tobgr16_c(), rgb24tobgr16_TMPL(), rgb2yuv(), rgb48Toxyz12(), rgb_to_yuv(), rgba2ycocg(), rgtc2_block_internal(), ring2_test(), rotate_tree(), roundToInt16(), rtmp_close(), rtmp_get_file_handle(), rtmp_open(), rtmp_read(), rtmp_read_pause(), rtmp_read_seek(), rtmp_write(), rtsp_read_packet(), run_postproc(), run_test(), rv30_decode_init(), rv30_decode_intra_types(), rv30_decode_mb_info(), rv30_loop_filter(), rv30_parse_slice_header(), rv34_decode_inter_macroblock(), rv34_decode_inter_mb_header(), rv34_decode_intra_macroblock(), rv34_decode_intra_mb_header(), rv34_decode_mv(), rv34_decode_slice(), rv34_decoder_alloc(), rv34_decoder_free(), rv34_decoder_realloc(), rv34_mc(), rv34_mc_1mv(), rv34_mc_2mv(), rv34_mc_2mv_skip(), rv34_output_i16x16(), rv34_output_intra(), rv34_pred_4x4_block(), rv34_pred_mv(), rv34_pred_mv_b(), rv34_pred_mv_rv3(), rv34_process_block(), rv34_set_deblock_coef(), rv40_decode_init(), rv40_decode_intra_types(), rv40_decode_mb_info(), rv40_loop_filter(), rv40_parse_slice_header(), rv4_weight(), sad_hpel_motion_search(), sbg_read_header(), sbg_read_probe(), sbr_hf_g_filt_c(), scale_double(), search_keyval(), set_frame(), set_palette(), set_params(), silk_unmix_ms(), simbiosis_imx_read_packet(), slice_get_derivative(), smacker_decode_bigtree(), smacker_decode_tree(), stereo_processing(), stereo_transform(), stereographic_to_xyz(), strftime_expand(), sub2video_copy_rect(), sub_left_prediction_bgr32(), sub_left_prediction_rgb24(), super2xsai(), swri_rematrix_init(), sws_scale(), temperature_slice16(), temperature_slice16p(), temperature_slice8(), temperature_slice8p(), test_stereo_interpolate(), tta_decode_frame(), tta_read_header(), uintpow(), uninit(), update_palette_index(), v360_slice(), vc1_mspel_filter(), vc2_encode_init(), vibrance_slice16(), vibrance_slice16p(), vibrance_slice8(), vibrance_slice8p(), vmd_decode(), vmdvideo_decode_init(), vp7_decode_block_coeffs_internal(), vp8_decode_block_coeffs_internal(), vp9_handle_packet(), vqa_decode_chunk(), wavesynth_decode(), wavesynth_init(), xan_decode_frame(), xface_encode_frame(), xyz12Torgb48(), xyz_to_ball(), xyz_to_equisolid(), xyz_to_flat(), xyz_to_orthographic(), xyz_to_rgb(), xyz_to_stereographic(), ycocg2rgba(), yuv2rgb_1_c_template(), yuv2rgb_2_c_template(), yuv2rgb_write(), yuv2rgb_write_full(), yuv2rgb_X_c_template(), yuv_a_to_rgba(), yuv_from_cqt(), and yuv_to_rgba().

◆ g

const char* g

Definition at line 117 of file vf_curves.c.

Referenced by add_hfyu_left_pred_bgr32_c(), add_opt(), add_waves(), adjust_frame_information(), adpcm_decode_frame(), apply_dependent_coupling(), apply_dependent_coupling_fixed(), apply_intensity_stereo(), apply_mid_side_stereo(), asf_build_simple_index(), asf_read_ext_stream_properties(), asf_read_header(), asf_read_stream_properties(), asf_read_unknown(), avcodec_string(), avpriv_set_systematic_pal2(), bfi_decode_frame(), bgr24ToUV_c(), bgr24ToUV_half_c(), bgr24ToY_c(), bprint_color(), butterworth_bp_filter(), butterworth_fo_section(), bytestream2_copy_buffer(), bytestream2_copy_bufferu(), bytestream2_get_buffer(), bytestream2_get_bufferu(), bytestream2_get_bytes_left(), bytestream2_init(), bytestream2_seek(), bytestream2_size(), bytestream2_skip(), bytestream2_skipu(), bytestream2_tell(), calc_thr_3gpp(), calculate_gamma(), cas_slice16(), cas_slice8(), cdg_load_palette(), cdtoons_decode_frame(), cdxl_decode_ham6(), cdxl_decode_ham8(), celt_normalize_residual(), celt_renormalize_vector(), chebyshev2_bp_filter(), chebyshev2_fo_section(), choose_rct_params(), cinepak_decode_codebook(), color_balance16(), color_balance16_p(), color_balance8(), color_balance8_p(), color_correlation(), color_decorrelation(), color_get(), color_hash(), colorcontrast_slice16(), colorcontrast_slice16p(), colorcontrast_slice8(), colorcontrast_slice8p(), compress_color(), compute_antialias(), compute_band_indexes(), compute_imdct(), config_input(), constrain_rgb(), convert(), create_lut(), curves_init(), dct_quantize_refine(), debug_accuracy(), decode_adaptive45(), decode_adaptive6(), decode_argb(), decode_argbi(), decode_argx(), decode_argxi(), decode_band_types(), decode_cce(), decode_delta_j(), decode_frame(), decode_huff(), decode_hybrid(), decode_mvc2(), decode_pal(), decode_plte_chunk(), decode_raw_intra_rgb(), decode_rgb(), decode_rgb_frame_TMPL(), decode_rgbi(), decode_rgbx(), decode_rgbxi(), decode_run_i(), decode_run_p(), decode_scalefactors(), decode_spectrum_and_dequant(), decode_units(), decode_value3(), decompress_i(), decompress_i3(), decompress_p(), decompress_p3(), detect_unknown_subobject(), do_colorhold_slice(), do_colorkey_pixel(), dvbsub_encode(), dvbsub_parse_clut_segment(), dx2_decode_slice_5x5(), encode_frame(), encode_rgb_frame_TMPL(), exponents_from_scale_factors(), ff_aac_adjust_common_pred(), ff_aac_is_encoding_err(), ff_aac_search_for_is(), ff_aac_search_for_ltp(), ff_aac_search_for_tns(), ff_flac_parse_picture(), ff_get_guid(), ff_get_qtpalette(), ff_init_nextband_map(), ff_jpegls_decode_picture(), ff_mjpeg_receive_frame(), ff_png_filter_row(), ff_pns_bits(), ff_printGUID(), ff_put_guid(), ff_rgb24toyv12_c(), fill_in_tongue(), filter_frame(), filter_horizontally(), filter_rgb24(), filter_rgb48(), filter_rgba(), filter_rgba64(), filter_slice_packed(), filter_slice_planar(), find_best_vect(), find_guid(), finish_group(), flic_decode_frame_8BPP(), for(), gamma_convert(), gamma_correct_rgb(), gdv_decode_frame(), gdv_read_header(), gen_image(), gen_sub_bitmap(), generate_joint_tables(), get_avg_color(), get_cmy_scale(), get_dst_color_err(), get_match_score(), get_max_component_diff(), get_next_color(), get_palette_frame(), get_rgb_scale(), gif_find_frame_end(), gif_parse(), guess_palette(), hsl2rgb(), huffman_decode(), idcin_read_packet(), idct(), idct_1d(), imdct_calc(), import_palette(), incr_cntdec(), init(), init_axis_color(), init_default_clut(), init_long_region(), init_short_region(), interp_band_gain(), jp2_find_codestream(), magy_decode_slice(), magy_decode_slice10(), magy_encode_frame(), main(), mangle_rgb_planes(), mark_pns(), mov_write_video_tag(), mp_decode_layer3(), mp_yuv_to_rgb(), optimize_colors(), paf_video_decode(), parse_3dl(), parse_bit_alloc(), parse_chunks(), parse_exponents(), parse_ifo_palette(), parse_indices(), parse_mantissas(), parse_optgroup(), parse_palette(), parse_palette_segment(), parse_pixel_format(), pgx_decode_frame(), pgx_decode_header(), pgx_get_number(), pitch_filter(), planar_rgb16_to_uv(), planar_rgb16_to_y(), planar_rgb_to_uv(), planar_rgb_to_y(), planar_rgbf32_to_uv(), planar_rgbf32_to_y(), pnm_decode_frame(), pnm_encode_frame(), premult2straight(), preservel(), process_bayer(), process_ipmovie_chunk(), psy_3gpp_analyze_channel(), psy_3gpp_init(), put_header(), put_pixel(), qdmc_decode_init(), quantize_band_cost_cached(), ra144_encode_subblock(), rd_frame(), refine_colors(), region_offset2size(), remove_doubling(), reorder_block(), rescale_dec(), restore_rgb_planes10_c(), restore_rgb_planes_c(), rgb12to15(), rgb16_32ToUV_c_template(), rgb16_32ToUV_half_c_template(), rgb24_to_rgb555(), rgb24_to_yuv420p(), rgb24to15_c(), rgb24to15_TMPL(), rgb24to16_c(), rgb24to16_TMPL(), rgb24tobgr15_c(), rgb24tobgr15_TMPL(), rgb24tobgr16_c(), rgb24tobgr16_TMPL(), rgb24ToUV_c(), rgb24ToUV_half_c(), rgb24ToY_c(), rgb2yuv(), rgb48funcs(), rgb48ToUV_c_template(), rgb48ToUV_half_c_template(), rgb48Toxyz12(), rgb64funcs(), rgb64ToUV_c_template(), rgb64ToUV_half_c_template(), rgb64ToY_c_template(), rgb_from_cqt(), rgb_to_yuv(), rgba2ycocg(), rgtc2_block_internal(), ripemd128_transform(), ripemd160_transform(), ripemd256_transform(), ripemd320_transform(), rnnoise_channel(), run_channel_fft(), run_postproc(), sbr_hf_gen(), search_for_ms(), search_for_pns(), search_for_quantizers_anmr(), search_for_quantizers_fast(), search_for_quantizers_twoloop(), set_frame(), set_palette(), set_special_band_scalefactors(), sha256_transform(), sha512_transform(), shuffle_bytes_0321_c(), shuffle_bytes_2103_c(), simbiosis_imx_read_packet(), slice_get_derivative(), sub_left_prediction_bgr32(), sub_left_prediction_rgb24(), sws_scale(), temperature_slice16(), temperature_slice16p(), temperature_slice8(), temperature_slice8p(), transform(), transform_step(), unbias_exponents(), update_model2_to_6(), update_model3_to_7(), update_model4_to_5(), update_model5_to_6(), update_palette_index(), vb_decode_framedata(), vibrance_slice16(), vibrance_slice16p(), vibrance_slice8(), vibrance_slice8p(), vif_statistic(), vmd_decode(), vmdvideo_decode_init(), vp9_handle_packet(), vqa_decode_chunk(), write_stream_codec_info(), xan_decode_frame(), xyz12Torgb48(), xyz_to_rgb(), ycocg2rgba(), yuv2rgb_1_c_template(), yuv2rgb_2_c_template(), yuv2rgb_write(), yuv2rgb_write_full(), yuv2rgb_X_c_template(), yuv_a_to_rgba(), yuv_from_cqt(), and yuv_to_rgba().

◆ b

const char* b

Definition at line 118 of file vf_curves.c.

Referenced by curves_init(), filter_slice_packed(), filter_slice_planar(), and interpolate().

◆ master

const char* master

◆ curves_presets

const { ... } curves_presets[]
Initial value:
= {
"0.129/1 0.466/0.498 0.725/0",
"0.109/1 0.301/0.498 0.517/0",
"0.098/1 0.235/0.498 0.423/0",
},
"0/0 0.25/0.156 0.501/0.501 0.686/0.745 1/1",
"0/0 0.25/0.188 0.38/0.501 0.745/0.815 1/0.815",
"0/0 0.231/0.094 0.709/0.874 1/1",
},
[PRESET_DARKER] = { .master = "0/0 0.5/0.4 1/1" },
[PRESET_INCREASE_CONTRAST] = { .master = "0/0 0.149/0.066 0.831/0.905 0.905/0.98 1/1" },
[PRESET_LIGHTER] = { .master = "0/0 0.4/0.5 1/1" },
[PRESET_LINEAR_CONTRAST] = { .master = "0/0 0.305/0.286 0.694/0.713 1/1" },
[PRESET_MEDIUM_CONTRAST] = { .master = "0/0 0.286/0.219 0.639/0.643 1/1" },
[PRESET_NEGATIVE] = { .master = "0/1 1/0" },
[PRESET_STRONG_CONTRAST] = { .master = "0/0 0.301/0.196 0.592/0.6 0.686/0.737 1/1" },
"0/0.11 0.42/0.51 1/0.95",
"0/0 0.50/0.48 1/1",
"0/0.22 0.49/0.44 1/0.8",
}
}

◆ curves_inputs

const AVFilterPad curves_inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
.config_props = config_input,
},
{ NULL }
}

Definition at line 798 of file vf_curves.c.

◆ curves_outputs

const AVFilterPad curves_outputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}

Definition at line 808 of file vf_curves.c.

◆ ff_vf_curves

const AVFilter ff_vf_curves
Initial value:
= {
.name = "curves",
.description = NULL_IF_CONFIG_SMALL("Adjust components curves."),
.priv_size = sizeof(CurvesContext),
.priv_class = &curves_class,
}

Definition at line 816 of file vf_curves.c.

PRESET_CROSS_PROCESS
@ PRESET_CROSS_PROCESS
Definition: vf_curves.c:49
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
PRESET_LIGHTER
@ PRESET_LIGHTER
Definition: vf_curves.c:52
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
curves
static const Curve curves[]
Definition: vf_pseudocolor.c:116
FLAGS
#define FLAGS
Definition: vf_curves.c:85
PRESET_MEDIUM_CONTRAST
@ PRESET_MEDIUM_CONTRAST
Definition: vf_curves.c:54
CurvesContext
Definition: vf_curves.c:61
curves_inputs
static const AVFilterPad curves_inputs[]
Definition: vf_curves.c:798
NB_PRESETS
@ NB_PRESETS
Definition: vf_curves.c:58
pts
static int64_t pts
Definition: transcode_aac.c:652
preset
preset
Definition: vf_curves.c:46
inputs
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
Definition: filter_design.txt:243
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_curves.c:753
curves_outputs
static const AVFilterPad curves_outputs[]
Definition: vf_curves.c:808
keypoint
Definition: vf_curves.c:39
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_curves.c:516
interpolate
static int interpolate(void *log_ctx, uint16_t *y, const struct keypoint *points, int nbits)
Definition: vf_curves.c:219
NULL
#define NULL
Definition: coverity.c:32
PRESET_DARKER
@ PRESET_DARKER
Definition: vf_curves.c:50
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
size
int size
Definition: twinvq_data.h:10344
curves_uninit
static av_cold void curves_uninit(AVFilterContext *ctx)
Definition: vf_curves.c:789
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:126
PRESET_INCREASE_CONTRAST
@ PRESET_INCREASE_CONTRAST
Definition: vf_curves.c:51
PRESET_NONE
@ PRESET_NONE
Definition: vf_curves.c:47
PRESET_VINTAGE
@ PRESET_VINTAGE
Definition: vf_curves.c:57
PRESET_COLOR_NEGATIVE
@ PRESET_COLOR_NEGATIVE
Definition: vf_curves.c:48
NB_COMP
#define NB_COMP
Definition: vf_curves.c:44
curves_presets
static const struct @218 curves_presets[]
PRESET_NEGATIVE
@ PRESET_NEGATIVE
Definition: vf_curves.c:55
PRESET_LINEAR_CONTRAST
@ PRESET_LINEAR_CONTRAST
Definition: vf_curves.c:53
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_curves.c:654
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:260
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
curves_init
static av_cold int curves_init(AVFilterContext *ctx)
Definition: vf_curves.c:472
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
uninit
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
PRESET_STRONG_CONTRAST
@ PRESET_STRONG_CONTRAST
Definition: vf_curves.c:56
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
OFFSET
#define OFFSET(x)
Definition: vf_curves.c:84
AV_RB16
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:98
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_curves.c:724