| /* TI Calypso / Locosto (?) internal buffer format */ |
| |
| /* The buffer are actually 16 bits words and must be read as |
| * such in the HW itself. |
| * It's assumed here it was dumped by putting the 8 MSB first |
| * and 8 LSB in the dumped files, for 33 bytes (thus dropping the |
| * last 8 LSBs) |
| */ |
| |
| /* |
| * This file is part of gapk (GSM Audio Pocket Knife). |
| * |
| * gapk is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation, either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * gapk is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with gapk. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include <stdint.h> |
| #include <string.h> |
| |
| #include <osmocom/codec/codec.h> |
| |
| #include <gapk/codecs.h> |
| #include <gapk/formats.h> |
| #include <gapk/utils.h> |
| |
| |
| static int |
| ti_hr_from_canon(uint8_t *dst, const uint8_t *src) |
| { |
| int i, voiced; |
| const uint16_t *bit_mapping; |
| |
| memset(dst, 0x00, 33); /* Not even half the bits are written, so we pre-clear */ |
| |
| voiced = (msb_get_bit(src, 34) << 1) | msb_get_bit(src, 35); |
| |
| bit_mapping = voiced ? |
| &gsm620_voiced_bitorder[0] : |
| &gsm620_unvoiced_bitorder[0] ; |
| |
| for (i=0; i<112; i++) { |
| int si = bit_mapping[i]; |
| int di = i >= 95 ? i+4 : i; |
| lsb_put_bit(dst, di, msb_get_bit(src, si)); |
| } |
| |
| return 0; |
| } |
| |
| static int |
| ti_hr_to_canon(uint8_t *dst, const uint8_t *src) |
| { |
| int i, voiced; |
| const uint16_t *bit_mapping; |
| |
| voiced = (msb_get_bit(src, 94) << 1) | msb_get_bit(src, 93); |
| |
| bit_mapping = voiced ? |
| &gsm620_voiced_bitorder[0] : |
| &gsm620_unvoiced_bitorder[0] ; |
| |
| for (i=0; i<112; i++) { |
| int si = i >= 95 ? i+4 : i; |
| int di = bit_mapping[i]; |
| msb_put_bit(dst, di, msb_get_bit(src, si)); |
| } |
| |
| return 0; |
| } |
| |
| const struct format_desc fmt_ti_hr = { |
| .type = FMT_TI_HR, |
| .codec_type = CODEC_HR, |
| .name = "ti-hr", |
| .description = "Texas Instrument HR TCH/H buffer format", |
| |
| .frame_len = 33, |
| .conv_from_canon = ti_hr_from_canon, |
| .conv_to_canon = ti_hr_to_canon, |
| }; |
| |
| |
| static int |
| ti_fr_from_canon(uint8_t *dst, const uint8_t *src) |
| { |
| int i; |
| |
| dst[22] = dst[23] = 0x00; /* some bits won't be writter, pre-clear them */ |
| |
| for (i=0; i<260; i++) { |
| int si = gsm610_bitorder[i]; |
| int di = i >= 182 ? i+4 : i; |
| msb_put_bit(dst, di, msb_get_bit(src, si)); |
| } |
| |
| return 0; |
| } |
| |
| static int |
| ti_fr_to_canon(uint8_t *dst, const uint8_t *src) |
| { |
| int i; |
| |
| dst[32] = 0x00; /* last nibble won't written, pre-clear it */ |
| |
| for (i=0; i<260; i++) { |
| int si = i >= 182 ? i+4 : i; |
| int di = gsm610_bitorder[i]; |
| msb_put_bit(dst, di, msb_get_bit(src, si)); |
| } |
| |
| return 0; |
| } |
| |
| const struct format_desc fmt_ti_fr = { |
| .type = FMT_TI_FR, |
| .codec_type = CODEC_FR, |
| .name = "ti-fr", |
| .description = "Texas Instrument FR TCH/F buffer format", |
| |
| .frame_len = 33, |
| .conv_from_canon = ti_fr_from_canon, |
| .conv_to_canon = ti_fr_to_canon, |
| }; |