Go to the source code of this file.
Data Structures | |
| struct | G723_1_Subframe |
| G723.1 unpacked data subframe. More... | |
| struct | PPFParam |
| Pitch postfilter parameters. More... | |
| struct | HFParam |
| Harmonic filter parameters. More... | |
| struct | FCBParam |
| Optimized fixed codebook excitation parameters. More... | |
Defines | |
| #define | SUBFRAMES 4 |
| #define | SUBFRAME_LEN 60 |
| #define | FRAME_LEN (SUBFRAME_LEN << 2) |
| #define | HALF_FRAME_LEN (FRAME_LEN / 2) |
| #define | LPC_FRAME (HALF_FRAME_LEN + SUBFRAME_LEN) |
| #define | LPC_ORDER 10 |
| #define | LSP_BANDS 3 |
| #define | LSP_CB_SIZE 256 |
| #define | PITCH_MIN 18 |
| #define | PITCH_MAX (PITCH_MIN + 127) |
| #define | PITCH_ORDER 5 |
| #define | GRID_SIZE 2 |
| #define | PULSE_MAX 6 |
| #define | GAIN_LEVELS 24 |
| #define | COS_TBL_SIZE 512 |
Enumerations | |
| enum | FrameType { ActiveFrame, SIDFrame, UntransmittedFrame, FT_SHORT = 0, FT_MEDIUM, FT_LONG, FT_PPC } |
| G723.1 frame types. More... | |
| enum | Rate { Rate6k3, Rate5k3 } |
Variables | |
| static const uint8_t | frame_size [4] = {24, 20, 4, 1} |
| static const int16_t | ppf_gain_weight [2] = {0x1800, 0x2000} |
| Postfilter gain weighting factors scaled by 2^15. | |
| static const int16_t | dc_lsp [LPC_ORDER] |
| LSP DC component. | |
| static const int16_t | cos_tab [COS_TBL_SIZE] |
| Cosine table scaled by 2^14. | |
| static const int16_t | lsp_band0 [LSP_CB_SIZE][3] |
| LSP VQ tables. | |
| static const int16_t | lsp_band1 [LSP_CB_SIZE][3] |
| static const int16_t | lsp_band2 [LSP_CB_SIZE][4] |
| static const int32_t | combinatorial_table [PULSE_MAX][SUBFRAME_LEN/GRID_SIZE] |
| Used for the coding/decoding of the pulses positions for the MP-MLQ codebook. | |
| static const int16_t | pitch_contrib [340] |
| static const int8_t | pulses [4] = {6, 5, 6, 5} |
| Number of non-zero pulses in the MP-MLQ excitation. | |
| static const int32_t | max_pos [4] = {593775, 142506, 593775, 142506} |
| Size of the MP-MLQ fixed excitation codebooks. | |
| static const int16_t | fixed_cb_gain [GAIN_LEVELS] |
| static const int16_t | adaptive_cb_gain85 [85 *20] |
| static const int16_t | adaptive_cb_gain170 [170 *20] |
| static const int16_t | postfilter_tbl [2][LPC_ORDER] |
| 0.65^i (Zero part) and 0.75^i (Pole part) scaled by 2^15 | |
| static const int16_t | hamming_window [LPC_FRAME] |
| Hamming window coefficients scaled by 2^15. | |
| static const int16_t | binomial_window [LPC_ORDER] |
| Binomial window coefficients scaled by 2^15. | |
| static const int16_t | bandwidth_expand [LPC_ORDER] |
| 0.994^i scaled by 2^15 | |
| static const int16_t | percept_flt_tbl [2][LPC_ORDER] |
| 0.5^i scaled by 2^15 | |
Definition in file g723_1_data.h.
| #define COS_TBL_SIZE 512 |
Definition at line 42 of file g723_1_data.h.
| #define FRAME_LEN (SUBFRAME_LEN << 2) |
Definition at line 30 of file g723_1_data.h.
Referenced by autocorr_max(), comp_interp_index(), formant_postfilter(), g723_1_decode_frame(), and residual_interp().
| #define GAIN_LEVELS 24 |
| #define GRID_SIZE 2 |
| #define HALF_FRAME_LEN (FRAME_LEN / 2) |
Definition at line 31 of file g723_1_data.h.
| #define LPC_FRAME (HALF_FRAME_LEN + SUBFRAME_LEN) |
Definition at line 32 of file g723_1_data.h.
| #define LPC_ORDER 10 |
Definition at line 33 of file g723_1_data.h.
Referenced by adaptive_cb_search(), ff_eval_coefs(), ff_eval_refl(), ff_int_to_int16(), ff_interp(), ff_rms(), ff_subblock_synthesis(), fixed_cb_search(), formant_postfilter(), g723_1_decode_frame(), g723_1_decode_init(), get_match_score(), inverse_quant(), lsp2lpc(), lsp_interpolate(), ra144_decode_frame(), ra144_encode_frame(), ra144_encode_init(), and ra144_encode_subblock().
| #define LSP_BANDS 3 |
Definition at line 34 of file g723_1_data.h.
| #define LSP_CB_SIZE 256 |
Definition at line 35 of file g723_1_data.h.
| #define PITCH_MAX (PITCH_MIN + 127) |
Definition at line 37 of file g723_1_data.h.
Referenced by autocorr_max(), comp_interp_index(), ff_sipr_decode_frame_16k(), g723_1_decode_frame(), get_residual(), and residual_interp().
| #define PITCH_MIN 18 |
Definition at line 36 of file g723_1_data.h.
Referenced by ff_sipr_decode_frame_16k(), and unpack_bitstream().
| #define PITCH_ORDER 5 |
Definition at line 38 of file g723_1_data.h.
Referenced by gen_acb_excitation(), and get_residual().
| #define PULSE_MAX 6 |
| #define SUBFRAME_LEN 60 |
Definition at line 29 of file g723_1_data.h.
Referenced by comp_interp_index(), comp_ppf_coeff(), formant_postfilter(), g723_1_decode_frame(), gain_scale(), gen_acb_excitation(), gen_dirac_train(), gen_fcb_excitation(), get_residual(), and unpack_bitstream().
| #define SUBFRAMES 4 |
Definition at line 28 of file g723_1_data.h.
| enum FrameType |
G723.1 frame types.
Definition at line 47 of file g723_1_data.h.
| enum Rate |
const int16_t adaptive_cb_gain170[170 *20] [static] |
const int16_t adaptive_cb_gain85[85 *20] [static] |
const int16_t bandwidth_expand[LPC_ORDER] [static] |
Initial value:
{
32571, 32376, 32182, 31989, 31797, 31606, 31416, 31228, 31040, 30854
}
Definition at line 1303 of file g723_1_data.h.
const int16_t binomial_window[LPC_ORDER] [static] |
Initial value:
{
32749, 32695, 32604, 32477, 32315, 32118, 31887, 31622, 31324, 30995
}
Definition at line 1296 of file g723_1_data.h.
const int32_t combinatorial_table[PULSE_MAX][SUBFRAME_LEN/GRID_SIZE] [static] |
Used for the coding/decoding of the pulses positions for the MP-MLQ codebook.
Definition at line 509 of file g723_1_data.h.
Referenced by gen_fcb_excitation().
Cosine table scaled by 2^14.
Definition at line 126 of file g723_1_data.h.
Referenced by eval_lpcenv_or_interp(), and lsp2lpc().
Initial value:
{
0x0c3b,
0x1271,
0x1e0a,
0x2a36,
0x3630,
0x406f,
0x4d28,
0x56f4,
0x638c,
0x6c46
}
Definition at line 110 of file g723_1_data.h.
Referenced by g723_1_decode_init(), and inverse_quant().
const int16_t fixed_cb_gain[GAIN_LEVELS] [static] |
Initial value:
{
1, 2, 3, 4, 6, 9, 13, 18,
26, 38, 55, 80, 115, 166, 240, 348,
502, 726, 1050, 1517, 2193, 3170, 4582, 6623,
}
Definition at line 609 of file g723_1_data.h.
Referenced by g723_1_decode_frame(), and gen_fcb_excitation().
const uint8_t frame_size[4] = {24, 20, 4, 1} [static] |
Definition at line 53 of file g723_1_data.h.
Referenced by a64_write_packet(), amr_handle_packet(), audio_encode_example(), avpriv_mpegaudio_decode_header(), build_feed_streams(), celt_header(), color_init(), compute_frame_duration(), compute_pkt_fields2(), decode_frame(), decode_packet(), dfa_read_packet(), escape124_decode_frame(), ff_sipr_decode_frame_16k(), find_expected_header(), flashsv2_encode_frame(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), g723_1_decode_frame(), g723_1_read_packet(), get_audio_frame_size(), lmlm4_read_packet(), mp3_header_decompress(), mpegaudio_parse(), msrle_decode_pal4(), mxf_write_d10_audio_packet(), new_video_stream(), qdm2_decode(), read_packet(), return_stored_frame(), rpl_read_packet(), s302m_decode_frame(), s302m_parse_frame_header(), smacker_read_packet(), source_init(), store_packet(), str_probe(), str_read_packet(), swf_write_video(), transcode_video(), vc1t_read_packet(), wavpack_decode_frame(), xan_wc3_copy_pixel_run(), xan_wc3_output_pixel_run(), and xmv_fetch_video_packet().
const int16_t hamming_window[LPC_FRAME] [static] |
Initial value:
{
2621, 2631, 2659, 2705, 2770, 2853, 2955, 3074, 3212, 3367,
3541, 3731, 3939, 4164, 4405, 4663, 4937, 5226, 5531, 5851,
6186, 6534, 6897, 7273, 7661, 8062, 8475, 8899, 9334, 9780,
10235, 10699, 11172, 11653, 12141, 12636, 13138, 13645, 14157, 14673,
15193, 15716, 16242, 16769, 17298, 17827, 18356, 18884, 19411, 19935,
20457, 20975, 21489, 21999, 22503, 23002, 23494, 23978, 24455, 24924,
25384, 25834, 26274, 26704, 27122, 27529, 27924, 28306, 28675, 29031,
29373, 29700, 30012, 30310, 30592, 30857, 31107, 31340, 31557, 31756,
31938, 32102, 32249, 32377, 32488, 32580, 32654, 32710, 32747, 32766,
32766, 32747, 32710, 32654, 32580, 32488, 32377, 32249, 32102, 31938,
31756, 31557, 31340, 31107, 30857, 30592, 30310, 30012, 29700, 29373,
29031, 28675, 28306, 27924, 27529, 27122, 26704, 26274, 25834, 25384,
24924, 24455, 23978, 23494, 23002, 22503, 21999, 21489, 20975, 20457,
19935, 19411, 18884, 18356, 17827, 17298, 16769, 16242, 15716, 15193,
14673, 14157, 13645, 13138, 12636, 12141, 11653, 11172, 10699, 10235,
9780, 9334, 8899, 8475, 8062, 7661, 7273, 6897, 6534, 6186,
5851, 5531, 5226, 4937, 4663, 4405, 4164, 3939, 3731, 3541,
3367, 3212, 3074, 2955, 2853, 2770, 2705, 2659, 2631, 2621
}
Definition at line 1272 of file g723_1_data.h.
const int32_t max_pos[4] = {593775, 142506, 593775, 142506} [static] |
Size of the MP-MLQ fixed excitation codebooks.
Definition at line 607 of file g723_1_data.h.
Referenced by gen_fcb_excitation().
const int16_t percept_flt_tbl[2][LPC_ORDER] [static] |
Initial value:
{
{29491, 26542, 23888, 21499, 19349, 17414, 15673, 14106, 12695, 11425},
{16384, 8192, 4096, 2048, 1024, 512, 256, 128, 64, 32}
}
Definition at line 1310 of file g723_1_data.h.
const int16_t pitch_contrib[340] [static] |
const int16_t postfilter_tbl[2][LPC_ORDER] [static] |
Initial value:
{
{21299, 13844, 8999, 5849, 3802, 2471, 1606, 1044, 679, 441},
{24576, 18432, 13824, 10368, 7776, 5832, 4374, 3281, 2460, 1845}
}
Definition at line 1262 of file g723_1_data.h.
Referenced by formant_postfilter().
const int16_t ppf_gain_weight[2] = {0x1800, 0x2000} [static] |
Postfilter gain weighting factors scaled by 2^15.
Definition at line 105 of file g723_1_data.h.
Referenced by comp_ppf_gains().
const int8_t pulses[4] = {6, 5, 6, 5} [static] |
Number of non-zero pulses in the MP-MLQ excitation.
Definition at line 602 of file g723_1_data.h.
Referenced by gen_fcb_excitation(), and synth_block_fcb_acb().
1.5.8