FFmpeg
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Go to the source code of this file.
Data Structures | |
struct | AVLFG |
Functions | |
void | av_lfg_init (AVLFG *c, unsigned int seed) |
static unsigned int | av_lfg_get (AVLFG *c) |
Get the next random unsigned 32-bit number using an ALFG. More... | |
static unsigned int | av_mlfg_get (AVLFG *c) |
Get the next random unsigned 32-bit number using a MLFG. More... | |
void | av_bmg_get (AVLFG *lfg, double out[2]) |
Get the next two numbers generated by a Box-Muller Gaussian generator using the random numbers issued by lfg. More... | |
Definition at line 30 of file lfg.c.
Referenced by a64multi_encode_init(), ac3_decode_init(), amrwb_decode_init(), cinepak_encode_init(), cng_decode_init(), config_input(), cook_decode_init(), dct_error(), decode_init(), encode_init(), ff_dither_alloc(), fill_random(), generate_dither_noise(), idct248_error(), init(), init_noise(), main(), mkv_write_attachments(), mkv_write_header(), mpc7_decode_init(), mpc8_decode_init(), roq_encode_init(), and rtmp_handshake().
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inlinestatic |
Get the next random unsigned 32-bit number using an ALFG.
Please also consider a simple LCG like state= state*1664525+1013904223, it may be good enough and faster for your specific use case.
Definition at line 38 of file lfg.h.
Referenced by ac3_decode_transform_coeffs_ch(), audiogen(), av_bmg_get(), cng_decode_frame(), dbl_rand(), drand(), ff_dither_alloc(), ff_eac3_apply_spectral_extension(), ff_eac3_decode_transform_coeffs_aht_ch(), fill_random(), filter_frame(), frandom(), generate_dither_noise(), get_high_utility_cell(), http_parse_request(), idct248_error(), idx_to_quant(), init(), init_block(), init_noise(), main(), mkv_write_attachments(), mkv_write_header(), mpc8_decode_frame(), nelly_decode_block(), rtmp_handshake(), rtsp_cmd_setup(), scalar_dequant_float(), scaled_hb_excitation(), and start_multicast().
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inlinestatic |
Get the next random unsigned 32-bit number using a MLFG.
Please also consider av_lfg_get() above, it is faster.