mirror of https://gerrit.osmocom.org/gapk
98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/* Formats handling */
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/*
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* This file is part of gapk (GSM Audio Pocket Knife).
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*
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* gapk is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gapk is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with gapk. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdint.h>
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enum osmo_gapk_format_type {
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FMT_INVALID = 0,
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/* Classic .amr container */
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FMT_AMR_EFR,
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/* Classic .gsm file for FR */
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FMT_GSM,
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/* 3GPP Reference HR vocodec files */
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FMT_HR_REF_DEC,
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FMT_HR_REF_ENC,
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/* Racal 6103E TCH recordings */
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FMT_RACAL_HR,
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FMT_RACAL_FR,
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FMT_RACAL_EFR,
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/* Raw PCM */
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FMT_RAWPCM_S16LE,
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/* Texas Instrument calypso/locosto buffer format */
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FMT_TI_HR,
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FMT_TI_FR,
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FMT_TI_EFR,
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/* AMR encoded data, variable length */
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FMT_AMR_OPENCORE,
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FMT_RTP_AMR,
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FMT_RTP_EFR,
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/* HR in RTP according to ETSI TS 101 318 */
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FMT_RTP_HR_ETSI,
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/* HR in RTP according to IETF RFC5993 */
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FMT_RTP_HR_IETF,
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_FMT_MAX,
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};
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/* Need to import here because of enum interdep */
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#include <osmocom/gapk/codecs.h>
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/*! call-back for actual format conversion function
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* \param[out] dst caller-allocated buffer for output data
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* \param[in] src input data
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* \param[in] src_len length of input data \a src
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* \returns number of output bytes written to \a dst; negative on error */
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typedef int (*osmo_gapk_fmt_conv_cb_t)(uint8_t *dst,
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const uint8_t *src, unsigned int src_len);
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struct osmo_gapk_format_desc {
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enum osmo_gapk_format_type type;
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enum osmo_gapk_codec_type codec_type;
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const char *description;
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const char *name;
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/*! Length of frames in this format (as opposed to canonical) */
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unsigned int frame_len;
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/* Format conversation function pointers */
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osmo_gapk_fmt_conv_cb_t conv_from_canon;
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osmo_gapk_fmt_conv_cb_t conv_to_canon;
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/*! Length of a (global) header at start of file */
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unsigned int header_len;
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/*! Exact match for (global) header at start of file */
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const uint8_t *header;
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};
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const struct osmo_gapk_format_desc *
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osmo_gapk_fmt_get_from_type(enum osmo_gapk_format_type type);
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const struct osmo_gapk_format_desc *
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osmo_gapk_fmt_get_from_name(const char *name);
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