mathops.h File Reference

#include <stdint.h>
#include "libavutil/attributes_internal.h"
#include "libavutil/common.h"
#include "config.h"

Go to the source code of this file.

Macros
#define	MAX_NEG_CROP   1024
#define	MUL64(a, b)
#define	MULL(a, b, s)
#define	MAC64(d, a, b)
#define	MLS64(d, a, b)
#define	MAC16(rt, ra, rb)
#define	MUL16(ra, rb)
#define	MLS16(rt, ra, rb)
#define	mid_pred   median3_c
#define	median4   median4
#define	FF_SIGNBIT(x)
#define	COPY3_IF_LT(x, y, a, b, c, d)
#define	MASK_ABS(mask, level)
#define	NEG_SSR32(a, s)
#define	NEG_USR32(a, s)
#define	PACK_2U8(a, b)
#define	PACK_4U8(a, b, c, d)
#define	PACK_2U16(a, b)
#define	PACK_2S8(a, b)
#define	PACK_4S8(a, b, c, d)
#define	PACK_2S16(a, b)
#define	FASTDIV(a, b)
#define	ff_sqrt   ff_sqrt

Functions
static av_always_inline int	MULH (int a, int b)
static av_always_inline unsigned	UMULH (unsigned a, unsigned b)
static av_const int	median3_c (int a, int b, int c)
static av_const int	median4 (int a, int b, int c, int d)
static av_const int	sign_extend (int val, unsigned bits)
static av_const int64_t	sign_extend64 (int64_t val, unsigned bits)
static av_const unsigned	zero_extend (unsigned val, unsigned bits)
static av_const unsigned int	ff_sqrt (unsigned int a)
static av_const float	ff_sqrf (float a)
static int8_t	ff_u8_to_s8 (uint8_t a)

Variables
const uint32_t	ff_inverse [257]
const uint8_t	ff_log2_run [41]
EXTERN const uint32_t	ff_square_tab [512]
const uint8_t	ff_sqrt_tab [256]
EXTERN const uint8_t	ff_crop_tab [256+2 *MAX_NEG_CROP]
const uint8_t	ff_zigzag_direct [64]
const uint8_t	ff_zigzag_scan [16+1]

Macro Definition Documentation

MAX_NEG_CROP

#define MAX_NEG_CROP   1024

Definition at line 31 of file mathops.h.

Referenced by ff_put_vp8_epel16_h4_mmi(), ff_put_vp8_epel16_h4v4_mmi(), ff_put_vp8_epel16_h4v6_mmi(), ff_put_vp8_epel16_h6_mmi(), ff_put_vp8_epel16_h6v4_mmi(), ff_put_vp8_epel16_h6v6_mmi(), ff_put_vp8_epel16_v4_mmi(), ff_put_vp8_epel16_v6_mmi(), ff_put_vp8_epel4_h4_mmi(), ff_put_vp8_epel4_h4v4_mmi(), ff_put_vp8_epel4_h4v6_mmi(), ff_put_vp8_epel4_h6_mmi(), ff_put_vp8_epel4_h6v4_mmi(), ff_put_vp8_epel4_h6v6_mmi(), ff_put_vp8_epel4_v4_mmi(), ff_put_vp8_epel4_v6_mmi(), ff_put_vp8_epel8_h4_mmi(), ff_put_vp8_epel8_h4v4_mmi(), ff_put_vp8_epel8_h4v6_mmi(), ff_put_vp8_epel8_h6_mmi(), ff_put_vp8_epel8_h6v4_mmi(), ff_put_vp8_epel8_h6v6_mmi(), ff_put_vp8_epel8_v4_mmi(), ff_put_vp8_epel8_v6_mmi(), filter_common(), filter_mbedge(), filter_mbedge(), h_block_filter(), intra_pred_plane(), mp_yuv_to_rgb(), parse_ifo_palette(), parse_palette_segment(), pred16x16_tm_vp8_c(), pred4x4_tm_vp8_c(), pred8x8_tm_vp8_c(), rv30_weak_loop_filter(), rv40_weak_loop_filter(), v_block_filter(), vp8_filter_common_is4tap(), vp8_filter_common_isnot4tap(), wmv2_mspel8_h_lowpass(), wmv2_mspel8_v_lowpass(), and yuv_a_to_rgba().

MUL64

#define MUL64	(		a,
			b )

Value:

((int64_t)(a) * (int64_t)(b))

Definition at line 56 of file mathops.h.

Referenced by apply_filter(), aptx_bin_search(), aptx_invert_quantization(), aptx_prediction_filtering(), aptx_qmf_convolution(), aptx_quantize_difference(), calc_corr(), calc_prediction_gain(), decode_var_block_data(), l1_unscale(), MULH(), parcor_to_lpc(), and revert_channel_correlation().

MULL

#define MULL	(		a,
			b,
			s )

Value:

(MUL64(a, b) >> (s))

Definition at line 60 of file mathops.h.

Referenced by long_term_filter(), lsp2poly(), and silk_is_lpc_stable().

MAC64

#define MAC64	(		d,
			a,
			b )

Value:

((d) += MUL64(a, b))

Definition at line 76 of file mathops.h.

Referenced by ac3_sum_square_butterfly_int32_c().

MLS64

#define MLS64	(		d,
			a,
			b )

Value:

((d) -= MUL64(a, b))

Definition at line 80 of file mathops.h.

MAC16

#define MAC16	(		rt,
			ra,
			rb )

Value:

rt += (ra) * (rb)

Definition at line 85 of file mathops.h.

Referenced by g722_apply_qmf().

MUL16

#define MUL16	(		ra,
			rb )

Value:

((ra) * (rb))

Definition at line 90 of file mathops.h.

Referenced by celt_cos(), ff_dot_product(), g722_apply_qmf(), pRNG(), and synth_frame().

MLS16

#define MLS16	(		rt,
			ra,
			rb )

Value:

((rt) -= (ra) * (rb))

Definition at line 94 of file mathops.h.

mid_pred

#define mid_pred   median3_c

Definition at line 115 of file mathops.h.

Referenced by add_hfyu_median_pred_int16_c(), add_lag_median_prediction(), add_median_pred_c(), correlate(), correlate_slice_buffered(), decorrelate(), direct_search(), encode_q_branch(), epic_decode_component_pred(), estimate_motion_b(), ff_estimate_p_frame_motion(), ff_h263_pred_motion(), ff_pre_estimate_p_frame_motion(), ff_vc1_pred_b_mv(), ff_vc1_pred_mv(), ff_vc1_pred_mv_intfr(), filter_frame(), get_chroma_mv(), get_cmy_scale(), get_luma_mv(), get_packet_size(), get_rgb_scale(), h263_mv4_search(), interlaced_search(), lag_pred_line_yuy2(), loco_predict(), ls_decode_line(), ls_encode_line(), magicyuv_median_pred16(), mobiclip_decode(), motion_search(), mv_pred_median(), mvi_predict(), pix_median_abs16_c(), pix_median_abs8_c(), pred_motion(), pred_mv(), pred_mv(), pred_pskip_motion(), pred_spatial_direct_motion(), predict_TMPL(), restore_median_planar(), restore_median_planar_il(), rv34_pred_b_vector(), rv34_pred_mv(), rv34_pred_mv_rv3(), search_mv(), sub_hfyu_median_pred_int16_c(), sub_median_pred_c(), svq1_decode_motion_vector(), svq3_pred_motion(), and wmv2_pred_motion().

median4

#define median4   median4

Definition at line 119 of file mathops.h.

Referenced by get_chroma_mv(), and get_luma_mv().

FF_SIGNBIT

#define FF_SIGNBIT

(

x

)

Value:

((x) >> CHAR_BIT * sizeof(x) - 1)

Definition at line 132 of file mathops.h.

Referenced by aptx_prediction_filtering(), dnxhd_10bit_dct_quantize(), inter_predict(), mv_pred_direct(), and scale_mv().

COPY3_IF_LT

#define COPY3_IF_LT	(		x,
			y,
			a,
			b,
			c,
			d )

Value:

if ((y) < (x)) {\
    (x) = (y);\
    (a) = (b);\
    (c) = (d);\
}

Definition at line 160 of file mathops.h.

MASK_ABS

#define MASK_ABS	(		mask,
			level )

Value:

        do {              \
        mask  = level >> 31;                    \
        level = (level ^ mask) - mask;          \
    } while (0)

Definition at line 169 of file mathops.h.

Referenced by dnxhd_init_vlc(), and encode_block().

NEG_SSR32

#define NEG_SSR32	(		a,
			s )

Value:

((( int32_t)(a))>>(32-(s)))

Definition at line 176 of file mathops.h.

NEG_USR32

#define NEG_USR32	(		a,
			s )

Value:

(((uint32_t)(a))>>(32-(s)))

Definition at line 180 of file mathops.h.

Referenced by decode_block(), decode_block_progressive(), dnxhd_decode_dct_block(), dv_decode_ac(), and get_xbits().

PACK_2U8

#define PACK_2U8	(		a,
			b )

Value:

(((b) <<  8) | (a))

Definition at line 195 of file mathops.h.

PACK_4U8

#define PACK_4U8	(		a,
			b,
			c,
			d )

Value:

(((d) << 24) | ((c) << 16) | ((b) << 8) | (a))

Definition at line 198 of file mathops.h.

Referenced by pred4x4_vertical_vp8_c().

PACK_2U16

#define PACK_2U16	(		a,
			b )

Value:

(((b) << 16) | (a))

Definition at line 201 of file mathops.h.

PACK_2S8

#define PACK_2S8	(		a,
			b )

Value:

PACK_2U8((a)&255, (b)&255)

Definition at line 206 of file mathops.h.

PACK_4S8

#define PACK_4S8	(		a,
			b,
			c,
			d )

Value:

PACK_4U8((a)&255, (b)&255, (c)&255, (d)&255)

Definition at line 209 of file mathops.h.

PACK_2S16

#define PACK_2S16	(		a,
			b )

Value:

PACK_2U16((a)&0xffff, (b)&0xffff)

Definition at line 212 of file mathops.h.

FASTDIV

#define FASTDIV	(		a,
			b )

Value:

((uint32_t)((((uint64_t)a) * ff_inverse[b]) >> 32))

Definition at line 216 of file mathops.h.

Referenced by adapt_prob(), decode_blockcodes(), ff_msmpeg4_pred_dc(), ff_sqrt(), get_dc(), mpeg4_decode_block(), mpeg4_encode_mb(), mpeg4_get_level_dc(), unpack_bitstream(), and vorbis_residue_decode_internal().

ff_sqrt

#define ff_sqrt   ff_sqrt

Definition at line 220 of file mathops.h.

Referenced by calc_cpl_coord(), dpcm_predict(), encode_q_branch(), ff_estimate_p_frame_motion(), ff_opus_parse_extradata(), ff_opus_rc_dec_uint_tri(), ff_t_sqrt(), fixed_sqrt(), get_visual_weight(), leastsquares(), main(), and square_root().

Function Documentation

MULH()

static av_always_inline int MULH ( int a, int b )

static

Definition at line 64 of file mathops.h.

UMULH()

static av_always_inline unsigned UMULH ( unsigned a, unsigned b )

static

Definition at line 70 of file mathops.h.

Referenced by pRNG().

median3_c()

static av_const int median3_c ( int a, int b, int c )

inlinestatic

Definition at line 98 of file mathops.h.

median4()

static av_const int median4 ( int a, int b, int c, int d )

inlinestatic

Definition at line 120 of file mathops.h.

sign_extend()

static av_const int sign_extend ( int val, unsigned bits )

inlinestatic

Definition at line 135 of file mathops.h.

Referenced by adpcm_circus_expand_nibble(), adpcm_decode_frame(), adpcm_ima_cunning_expand_nibble(), alac_linear_predictor(), ambisonics_config(), aptx_unpack_codeword(), aptxhd_unpack_codeword(), check_add_8x8basis(), check_lpc(), check_lpc33(), checkasm_check_inner_add_yblock(), cinaudio_decode_frame(), decode_0cpy(), decode_adpcm_ima_hvqm2(), decode_adpcm_ima_hvqm4(), decode_band_numwavs(), decode_block(), decode_channel_sf_idx(), decode_huff(), decode_inter(), decode_inter_block(), decode_intra_block(), decode_plane(), decode_qu_spectra(), decode_tones_amplitude(), decode_tones_frequency(), dpcm_decode_frame(), ff_adpcm_argo_expand_nibble(), ff_h263_decode_motion(), ff_h263_encode_motion(), flic_decode_frame_15_16BPP(), flic_decode_frame_1BPP(), flic_decode_frame_24BPP(), flic_decode_frame_8BPP(), fold(), generate_joint_tables(), get_sbits_long(), get_xbits_le(), init_h263_test(), libopus_decode_init(), lpc_prediction(), mix_presentation_obu(), mpc8_decode_frame(), mpeg_decode_motion(), on2avc_decode_pairs(), on2avc_decode_quads(), paf_audio_decode(), parameter_block_obu(), peek_signed_nz(), qoa_decode_frame(), read_coeffs_coarse(), read_coeffs_fine(), read_signed_nz(), scalable_channel_layout_config(), scale_coefs(), scale_coefs_q2(), svq1_decode_motion_vector(), test_decorrelate_sf(), test_rv34_idct_add(), tscc2_decode_mb(), tta_decode_frame(), xa_decode(), and xan_wc3_decode_frame().

sign_extend64()

static av_const int64_t sign_extend64 ( int64_t val, unsigned bits )

inlinestatic

Definition at line 144 of file mathops.h.

Referenced by check_lpc33(), and get_sbits64().

zero_extend()

static av_const unsigned zero_extend ( unsigned val, unsigned bits )

inlinestatic

Definition at line 153 of file mathops.h.

Referenced by get_xbits_le().

ff_sqrt()

static av_const unsigned int ff_sqrt ( unsigned int a )

inlinestatic

Definition at line 221 of file mathops.h.

ff_sqrf()

static av_const float ff_sqrf ( float a )

inlinestatic

Definition at line 242 of file mathops.h.

Referenced by search_for_quantizers_twoloop().

ff_u8_to_s8()

static int8_t ff_u8_to_s8 ( uint8_t a )

inlinestatic

Definition at line 247 of file mathops.h.

Referenced by color_transform_delta().

Variable Documentation

ff_inverse

const uint32_t ff_inverse[257]

extern

Definition at line 66 of file mathtables.c.

Referenced by dct_quantize_TMPL(), ff_msmpeg4_pred_dc(), and setup_classifs().

ff_log2_run

const uint8_t ff_log2_run[41]

extern

Definition at line 155 of file mathtables.c.

Referenced by decode_header(), decode_line_TMPL(), encode_line_TMPL(), ls_decode_line(), ls_encode_line(), and ls_encode_run().

ff_square_tab

EXTERN const uint32_t ff_square_tab[512]

Definition at line 35 of file mathops.h.

Referenced by pix_norm1(), pix_norm1_c(), sse(), sse16_c(), sse4_c(), and sse8_c().

ff_sqrt_tab

const uint8_t ff_sqrt_tab[256]

extern

Definition at line 102 of file mathtables.c.

Referenced by ff_sqrt().

ff_crop_tab

EXTERN const uint8_t ff_crop_tab[256+2 *MAX_NEG_CROP]

Definition at line 37 of file mathops.h.

ff_zigzag_direct

const uint8_t ff_zigzag_direct[64]

extern

Definition at line 137 of file mathtables.c.

Referenced by ac_uncompress(), add_coefficients(), apv_entropy_decode_block(), calc_dequant(), compute_quant_matrix(), compute_quant_matrix(), decode_block(), decode_block(), decode_block_intra(), decode_dct(), decode_gop_header(), decode_i_block(), decode_init(), decode_init(), decode_init(), decode_scaling_list(), decode_studio_vop_header(), decode_vol_header(), decode_vop_header(), dnxhd_decode_header(), dnxhd_init_qmat(), dv_init_enc_block(), dvvideo_decode_init(), encode_picture(), ff_apv_entropy_decode_block(), ff_cavs_init(), ff_dxva2_h264_fill_scaling_lists(), ff_dxva2_mpeg2_fill_quantization_matrices(), ff_mpv_idct_init(), ff_rtjpeg_init(), ff_vp56_init_context(), ff_write_quant_matrix(), fic_decode_block(), hq_decode_block(), init_idct(), init_scan_tables(), ipu_decode_frame(), jpg_init(), lead_decode_init(), load_matrix(), mpeg_decode_picture_coding_extension(), mss4_decode_dct(), read_quant_matrix_ext(), set_pps(), set_sps(), speedhq_decode_init(), test_apv_entropy_decode_block(), tgq_decode_block(), tqi_decode_mb(), vaapi_mpeg2_start_frame(), vaapi_mpeg4_start_frame(), and vp3_decode_init().

ff_zigzag_scan

const uint8_t ff_zigzag_scan[16+1]

extern

Definition at line 148 of file mathtables.c.

Referenced by decode_mb_coeffs(), decode_scaling_list(), ff_dxva2_h264_fill_scaling_lists(), init_scan_tables(), set_pps(), set_sps(), svq3_decode_block(), tscc2_decode_mb(), vp78_decode_init(), vp7_decode_frame_header(), and vp8_decode_block_coeffs_internal().