forked from osmocom/wireshark
83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/** @file
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*
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* RTP decoding routines for Wireshark.
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* Copied from ui/gtk/rtp_player.c
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*
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* Copyright 2006, Alejandro Vaquero <alejandrovaquero@yahoo.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1999 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __RTP_MEDIA_H__
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#define __RTP_MEDIA_H__
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#include <glib.h>
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/** @file
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* "RTP Player" dialog box common routines.
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* @ingroup main_ui_group
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/****************************************************************************/
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/* INTERFACE */
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/****************************************************************************/
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typedef gint16 SAMPLE;
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#define SAMPLE_MAX G_MAXINT16
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#define SAMPLE_MIN G_MININT16
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#define SAMPLE_NaN SAMPLE_MIN
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#define SAMPLE_BYTES (sizeof(SAMPLE) / sizeof(char))
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/* Defines an RTP packet */
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typedef struct _rtp_packet {
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guint32 frame_num; /* Qt only */
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struct _rtp_info *info; /* the RTP dissected info */
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double arrive_offset; /* arrive offset time since the beginning of the stream as ms in GTK UI and s in Qt UI */
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guint8* payload_data;
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} rtp_packet_t;
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/** Create a new hash table.
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*
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* @return A new hash table suitable for passing to decode_rtp_packet.
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*/
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GHashTable *rtp_decoder_hash_table_new(void);
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/** Decode payload from an RTP packet
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*
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* @param payload_type Payload number
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* @param payload_type_str Payload name, can be NULL
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* @param payload_data Payload
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* @param payload_len Length of payload
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* @param out_buff Output audio samples.
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* @param decoders_hash Hash table created with rtp_decoder_hash_table_new.
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* @param channels_ptr If non-NULL, receives the number of channels in the sample.
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* @param sample_rate_ptr If non-NULL, receives the sample rate.
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* @return The number of decoded bytes on success, 0 on failure.
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*/
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size_t decode_rtp_packet_payload(guint8 payload_type, const gchar *payload_type_str, guint8 *payload_data, size_t payload_len, SAMPLE **out_buff, GHashTable *decoders_hash, guint *channels_ptr, guint *sample_rate_ptr);
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/** Decode an RTP packet
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*
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* @param rp Wrapper for per-packet RTP tap data.
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* @param out_buff Output audio samples.
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* @param decoders_hash Hash table created with rtp_decoder_hash_table_new.
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* @param channels_ptr If non-NULL, receives the number of channels in the sample.
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* @param sample_rate_ptr If non-NULL, receives the sample rate.
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* @return The number of decoded bytes on success, 0 on failure.
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*/
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size_t decode_rtp_packet(rtp_packet_t *rp, SAMPLE **out_buff, GHashTable *decoders_hash, guint *channels_ptr, guint *sample_rate_ptr);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __RTP_MEDIA_H__ */
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