av_cold void ff_ccitt_unpack_init(void) { static VLC_TYPE code_table1[528][2]; static VLC_TYPE code_table2[648][2]; int i; static int initialized = 0; if (initialized) return; ccitt_vlc[0].table = code_table1; ccitt_vlc[0].table_allocated = 528; ccitt_vlc[1].table = code_table2; ccitt_vlc[1].table_allocated = 648; for (i = 0; i < 2; i++) { ff_init_vlc_sparse(&ccitt_vlc[i], 9, CCITT_SYMS, ccitt_codes_lens[i], 1, 1, ccitt_codes_bits[i], 1, 1, ccitt_syms, 2, 2, INIT_VLC_USE_NEW_STATIC); } INIT_VLC_STATIC(&ccitt_group3_2d_vlc, 9, 11, ccitt_group3_2d_lens, 1, 1, ccitt_group3_2d_bits, 1, 1, 512); initialized = 1; }
static av_cold void h261_decode_init_vlc(H261Context *h){ static int done = 0; if(!done){ done = 1; INIT_VLC_STATIC(&h261_mba_vlc, H261_MBA_VLC_BITS, 35, h261_mba_bits, 1, 1, h261_mba_code, 1, 1, 662); INIT_VLC_STATIC(&h261_mtype_vlc, H261_MTYPE_VLC_BITS, 10, h261_mtype_bits, 1, 1, h261_mtype_code, 1, 1, 80); INIT_VLC_STATIC(&h261_mv_vlc, H261_MV_VLC_BITS, 17, &h261_mv_tab[0][1], 2, 1, &h261_mv_tab[0][0], 2, 1, 144); INIT_VLC_STATIC(&h261_cbp_vlc, H261_CBP_VLC_BITS, 63, &h261_cbp_tab[0][1], 2, 1, &h261_cbp_tab[0][0], 2, 1, 512); init_rl(&h261_rl_tcoeff, ff_h261_rl_table_store); INIT_VLC_RL(h261_rl_tcoeff, 552); } }
static av_cold void h261_decode_init_vlc(H261Context *h) { static int done = 0; // fixed to avoid multi decoders conflict when playing together (by Daniel) if(!done || 1) { done = 1; INIT_VLC_STATIC(&h261_mba_vlc, H261_MBA_VLC_BITS, 35, h261_mba_bits, 1, 1, h261_mba_code, 1, 1, 662); INIT_VLC_STATIC(&h261_mtype_vlc, H261_MTYPE_VLC_BITS, 10, h261_mtype_bits, 1, 1, h261_mtype_code, 1, 1, 80); INIT_VLC_STATIC(&h261_mv_vlc, H261_MV_VLC_BITS, 17, &h261_mv_tab[0][1], 2, 1, &h261_mv_tab[0][0], 2, 1, 144); INIT_VLC_STATIC(&h261_cbp_vlc, H261_CBP_VLC_BITS, 63, &h261_cbp_tab[0][1], 2, 1, &h261_cbp_tab[0][0], 2, 1, 512); init_rl(&h261_rl_tcoeff, ff_h261_rl_table_store); INIT_VLC_RL(h261_rl_tcoeff, 552); } }
/* XXX: find a better solution to handle static init */ av_cold void ff_h263_decode_init_vlc(void) { static volatile int done = 0; if (!done) { INIT_VLC_STATIC(&ff_h263_intra_MCBPC_vlc, INTRA_MCBPC_VLC_BITS, 9, ff_h263_intra_MCBPC_bits, 1, 1, ff_h263_intra_MCBPC_code, 1, 1, 72); INIT_VLC_STATIC(&ff_h263_inter_MCBPC_vlc, INTER_MCBPC_VLC_BITS, 28, ff_h263_inter_MCBPC_bits, 1, 1, ff_h263_inter_MCBPC_code, 1, 1, 198); INIT_VLC_STATIC(&ff_h263_cbpy_vlc, CBPY_VLC_BITS, 16, &ff_h263_cbpy_tab[0][1], 2, 1, &ff_h263_cbpy_tab[0][0], 2, 1, 64); INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 33, &ff_mvtab[0][1], 2, 1, &ff_mvtab[0][0], 2, 1, 538); ff_init_rl(&ff_h263_rl_inter, ff_h263_static_rl_table_store[0]); ff_init_rl(&ff_rl_intra_aic, ff_h263_static_rl_table_store[1]); INIT_VLC_RL(ff_h263_rl_inter, 554); INIT_VLC_RL(ff_rl_intra_aic, 554); INIT_VLC_STATIC(&h263_mbtype_b_vlc, H263_MBTYPE_B_VLC_BITS, 15, &ff_h263_mbtype_b_tab[0][1], 2, 1, &ff_h263_mbtype_b_tab[0][0], 2, 1, 80); INIT_VLC_STATIC(&cbpc_b_vlc, CBPC_B_VLC_BITS, 4, &ff_cbpc_b_tab[0][1], 2, 1, &ff_cbpc_b_tab[0][0], 2, 1, 8); done = 1; } }
static av_cold void init_vlcs(ASV1Context *a){ static int done = 0; if (!done) { done = 1; INIT_VLC_STATIC(&ccp_vlc, VLC_BITS, 17, &ff_asv_ccp_tab[0][1], 2, 1, &ff_asv_ccp_tab[0][0], 2, 1, 64); INIT_VLC_STATIC(&dc_ccp_vlc, VLC_BITS, 8, &ff_asv_dc_ccp_tab[0][1], 2, 1, &ff_asv_dc_ccp_tab[0][0], 2, 1, 64); INIT_VLC_STATIC(&ac_ccp_vlc, VLC_BITS, 16, &ff_asv_ac_ccp_tab[0][1], 2, 1, &ff_asv_ac_ccp_tab[0][0], 2, 1, 64); INIT_VLC_STATIC(&level_vlc, VLC_BITS, 7, &ff_asv_level_tab[0][1], 2, 1, &ff_asv_level_tab[0][0], 2, 1, 64); INIT_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63, &ff_asv2_level_tab[0][1], 2, 1, &ff_asv2_level_tab[0][0], 2, 1, 1024); } }
av_cold void ff_mpeg12_init_vlcs(void) { static int done = 0; if (!done) { done = 1; INIT_VLC_STATIC(&ff_dc_lum_vlc, DC_VLC_BITS, 12, ff_mpeg12_vlc_dc_lum_bits, 1, 1, ff_mpeg12_vlc_dc_lum_code, 2, 2, 512); INIT_VLC_STATIC(&ff_dc_chroma_vlc, DC_VLC_BITS, 12, ff_mpeg12_vlc_dc_chroma_bits, 1, 1, ff_mpeg12_vlc_dc_chroma_code, 2, 2, 514); INIT_VLC_STATIC(&ff_mv_vlc, MV_VLC_BITS, 17, &ff_mpeg12_mbMotionVectorTable[0][1], 2, 1, &ff_mpeg12_mbMotionVectorTable[0][0], 2, 1, 518); INIT_VLC_STATIC(&ff_mbincr_vlc, MBINCR_VLC_BITS, 36, &ff_mpeg12_mbAddrIncrTable[0][1], 2, 1, &ff_mpeg12_mbAddrIncrTable[0][0], 2, 1, 538); INIT_VLC_STATIC(&ff_mb_pat_vlc, MB_PAT_VLC_BITS, 64, &ff_mpeg12_mbPatTable[0][1], 2, 1, &ff_mpeg12_mbPatTable[0][0], 2, 1, 512); INIT_VLC_STATIC(&ff_mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7, &table_mb_ptype[0][1], 2, 1, &table_mb_ptype[0][0], 2, 1, 64); INIT_VLC_STATIC(&ff_mb_btype_vlc, MB_BTYPE_VLC_BITS, 11, &table_mb_btype[0][1], 2, 1, &table_mb_btype[0][0], 2, 1, 64); ff_init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]); ff_init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]); INIT_2D_VLC_RL(ff_rl_mpeg1, 680); INIT_2D_VLC_RL(ff_rl_mpeg2, 674); } }
static av_cold int rv10_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; static int done=0; if (avctx->extradata_size < 8) { av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n"); return -1; } MPV_decode_defaults(s); s->avctx= avctx; s->out_format = FMT_H263; s->codec_id= avctx->codec_id; s->orig_width = s->width = avctx->coded_width; s->orig_height= s->height = avctx->coded_height; s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1; avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4); if (avctx->sub_id == 0x10000000) { s->rv10_version= 0; s->low_delay=1; } else if (avctx->sub_id == 0x10001000) { s->rv10_version= 3; s->low_delay=1; } else if (avctx->sub_id == 0x10002000) { s->rv10_version= 3; s->low_delay=1; s->obmc=1; } else if (avctx->sub_id == 0x10003000) { s->rv10_version= 3; s->low_delay=1; } else if (avctx->sub_id == 0x10003001) { s->rv10_version= 3; s->low_delay=1; } else if ( avctx->sub_id == 0x20001000 || (avctx->sub_id >= 0x20100000 && avctx->sub_id < 0x201a0000)) { s->low_delay=1; } else if ( avctx->sub_id == 0x30202002 || avctx->sub_id == 0x30203002 || (avctx->sub_id >= 0x20200002 && avctx->sub_id < 0x20300000)) { s->low_delay=0; s->avctx->has_b_frames=1; } else av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id); if(avctx->debug & FF_DEBUG_PICT_INFO){ av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1); } avctx->pix_fmt = PIX_FMT_YUV420P; if (MPV_common_init(s) < 0) return -1; h263_decode_init_vlc(s); /* init rv vlc */ if (!done) { INIT_VLC_STATIC(&rv_dc_lum, DC_VLC_BITS, 256, rv_lum_bits, 1, 1, rv_lum_code, 2, 2, 16384); INIT_VLC_STATIC(&rv_dc_chrom, DC_VLC_BITS, 256, rv_chrom_bits, 1, 1, rv_chrom_code, 2, 2, 16388); done = 1; } return 0; }
static av_cold int rv10_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; static int done=0; int major_ver, minor_ver, micro_ver; if (avctx->extradata_size < 8) { av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n"); return -1; } MPV_decode_defaults(s); s->avctx= avctx; s->out_format = FMT_H263; s->codec_id= avctx->codec_id; s->orig_width = s->width = avctx->coded_width; s->orig_height= s->height = avctx->coded_height; s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1; avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4); major_ver = RV_GET_MAJOR_VER(avctx->sub_id); minor_ver = RV_GET_MINOR_VER(avctx->sub_id); micro_ver = RV_GET_MICRO_VER(avctx->sub_id); s->low_delay = 1; switch (major_ver) { case 1: s->rv10_version = micro_ver ? 3 : 1; s->obmc = micro_ver == 2; break; case 2: if (minor_ver >= 2) { s->low_delay = 0; s->avctx->has_b_frames = 1; } break; default: av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id); av_log_missing_feature(avctx, "RV1/2 version", 1); return AVERROR_PATCHWELCOME; } if(avctx->debug & FF_DEBUG_PICT_INFO) { av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1); } avctx->pix_fmt = PIX_FMT_YUV420P; if (MPV_common_init(s) < 0) return -1; h263_decode_init_vlc(s); /* init rv vlc */ if (!done) { INIT_VLC_STATIC(&rv_dc_lum, DC_VLC_BITS, 256, rv_lum_bits, 1, 1, rv_lum_code, 2, 2, 16384); INIT_VLC_STATIC(&rv_dc_chrom, DC_VLC_BITS, 256, rv_chrom_bits, 1, 1, rv_chrom_code, 2, 2, 16388); done = 1; } return 0; }
static av_cold int aac_decode_init(AVCodecContext *avctx) { AACContext *ac = avctx->priv_data; ac->avctx = avctx; ac->m4ac.sample_rate = avctx->sample_rate; if (avctx->extradata_size > 0) { if (decode_audio_specific_config(ac, avctx->extradata, avctx->extradata_size)) return -1; } avctx->sample_fmt = SAMPLE_FMT_S16; AAC_INIT_VLC_STATIC( 0, 304); AAC_INIT_VLC_STATIC( 1, 270); AAC_INIT_VLC_STATIC( 2, 550); AAC_INIT_VLC_STATIC( 3, 300); AAC_INIT_VLC_STATIC( 4, 328); AAC_INIT_VLC_STATIC( 5, 294); AAC_INIT_VLC_STATIC( 6, 306); AAC_INIT_VLC_STATIC( 7, 268); AAC_INIT_VLC_STATIC( 8, 510); AAC_INIT_VLC_STATIC( 9, 366); AAC_INIT_VLC_STATIC(10, 462); ff_aac_sbr_init(); dsputil_init(&ac->dsp, avctx); ac->random_state = 0x1f2e3d4c; // -1024 - Compensate wrong IMDCT method. // 32768 - Required to scale values to the correct range for the bias method // for float to int16 conversion. if (ac->dsp.float_to_int16_interleave == ff_float_to_int16_interleave_c) { ac->add_bias = 385.0f; ac->sf_scale = 1. / (-1024. * 32768.); ac->sf_offset = 0; } else { ac->add_bias = 0.0f; ac->sf_scale = 1. / -1024.; ac->sf_offset = 60; } ff_aac_tableinit(); INIT_VLC_STATIC(&vlc_scalefactors,7,FF_ARRAY_ELEMS(ff_aac_scalefactor_code), ff_aac_scalefactor_bits, sizeof(ff_aac_scalefactor_bits[0]), sizeof(ff_aac_scalefactor_bits[0]), ff_aac_scalefactor_code, sizeof(ff_aac_scalefactor_code[0]), sizeof(ff_aac_scalefactor_code[0]), 352); ff_mdct_init(&ac->mdct, 11, 1, 1.0); ff_mdct_init(&ac->mdct_small, 8, 1, 1.0); // window initialization ff_kbd_window_init(ff_aac_kbd_long_1024, 4.0, 1024); ff_kbd_window_init(ff_aac_kbd_short_128, 6.0, 128); ff_init_ff_sine_windows(10); ff_init_ff_sine_windows( 7); cbrt_tableinit(); return 0; }