sdppyldinfo.cpp
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: sdppyldinfo.cpp,v 1.2.32.1 2004/07/09 02:05:16 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hxtypes.h"
- #include "hxassert.h"
- #include "hlxclib/string.h"
- #include "rtptypes.h"
- /****************************************************************************
- * Defines
- */
- #define RTP_PAYLOAD_MAP_SIZE 35
- #define RTP_BAD_PAYLOAD_TYPE 0xFFFFFFFF
- /****************************************************************************
- * Global - Types
- */
- struct RTPPayloadInfo
- {
- const char* pEncoding;
- UINT32 ulRTPFactor;
- UINT32 ulHXFactor;
- BOOL bTimestampDeliv;
- UINT32 ulBitRate;
- UINT16 usChannels;
- };
- struct MimeTypeToClockRateInfo
- {
- const char* pMimeType;
- UINT32 ulSamplesPerSecond;
- };
- struct RTPPayloadHeaderPair
- {
- ULONG32 ulPayloadType;
- const BYTE* pHeader;
- ULONG32 ulHeaderSize;
- };
- /* opaque data for known RTP payloads */
- const BYTE p_zPCMU_DATA[] =
- {
- 0x01, 0x00, 0x01, 0x00, 0x40, 0x1f, 0x00, 0x00,
- 0x40, 0x1f, 0x00, 0x00, 0x01, 0x00, 0x08, 0x00,
- 0x00, 0x00, 0x26, 0x26
- };
- const BYTE p_zPCMA_DATA[] =
- {
- 0x06, 0x00, 0x01, 0x00, 0x40, 0x1f, 0x00, 0x00,
- 0x40, 0x1f, 0x00, 0x00, 0x01, 0x00, 0x08, 0x00,
- 0x00, 0x00, 0x26, 0x26
- };
- const BYTE p_zL162CH_DATA[] =
- {
- 0x00, 0x00, 0x43, 0x50, 0x00, 0x01, 0x00, 0x02,
- 0x00, 0x00, 0xac, 0x44, 0x00, 0x10, 0x00, 0x00
- };
- const BYTE p_zL161CH_DATA[] =
- {
- 0x00, 0x00, 0x43, 0x50, 0x00, 0x01, 0x00, 0x01,
- 0x00, 0x00, 0xac, 0x44, 0x00, 0x10, 0x00, 0x00
- };
- const BYTE p_zGSM_DATA[] =
- {
- 0x31, 0x00, 0x01, 0x00, 0x40, 0x1f, 0x00, 0x00,
- 0x59, 0x06, 0x00, 0x00, 0x41, 0x00, 0x00, 0x00,
- 0x02, 0x00, 0x40, 0x01, 0x26, 0x26
- };
- typedef struct tPCMHEADER
- {
- UINT16 usFormatTag; /* format type */
- UINT16 usChannels; /* number of channels (i.e. mono, stereo..*/
- UINT32 ulSamplesPerSec; /* sample rate */
- UINT16 usBitsPerSample; /* number of bits per sample of mono data*/
- UINT16 usSampleEndianness; /* for 16-bit samples, 0==little, 1==big */
- } PCMHEADER;
- /****************************************************************************
- * Payload to header table - must be NULL entry terminated
- */
- const RTPPayloadHeaderPair z_PayloadHeaderPairList[] =
- {
- { RTP_PAYLOAD_PCMU, p_zPCMU_DATA, sizeof(p_zPCMU_DATA) },
- { RTP_PAYLOAD_PCMA, p_zPCMA_DATA, sizeof(p_zPCMA_DATA) },
- { RTP_PAYLOAD_L16_2CH, p_zL162CH_DATA, sizeof(p_zL162CH_DATA) },
- { RTP_PAYLOAD_L16_1CH, p_zL161CH_DATA, sizeof(p_zL161CH_DATA) },
- { RTP_PAYLOAD_GSM, p_zGSM_DATA, sizeof(p_zGSM_DATA) },
- { RTP_BAD_PAYLOAD_TYPE, NULL, 0 }
- };
- /****************************************************************************
- * Payload to RN MimeType Table
- * This table identifies payloads RN can render and the mappings from
- * the payloads to renderer mime types.
- * With the transition to standard mime types supported by renderers,
- * this table will lose the function of mapping but will continue to
- * identify the renderer supported payloads.
- */
- const char* const z_PayloadToRNMimeMap[RTP_PAYLOAD_MAP_SIZE] =
- {
- "audio/PCMU", // 0
- NULL, // 1
- NULL, // 2
- "audio/x-pn-gsm610", // 3
- NULL, // 4
- "audio/x-pn-dvi4", // 5
- "audio/x-pn-dvi4", // 6
- NULL, // 7
- "audio/PCMA", // 8
- NULL, // 9
- "audio/L16", // 10
- "audio/L16", // 11
- NULL, // 12
- NULL, // 13
- "audio/MPA", // 14
- NULL, // 15
- NULL, // 16
- NULL, // 17
- NULL, // 18
- NULL, // 19
- NULL, // 20
- NULL, // 21
- NULL, // 22
- NULL, // 23
- NULL, // 24
- NULL, // 25
- "video/x-pn-jpeg-plugin", // 26
- NULL, // 27
- NULL, // 28
- NULL, // 29
- NULL, // 30
- "video/H261", // 31
- "video/MPV", // 32
- NULL, // 33
- "video/H263" // 34
- };
- /*
- * Payload timestamp conversion table - contains the RTPTimestamp to
- * HXTimestamp ratio factor as well as whether or not this payload
- * is frame based or not. Since packet size is not included in the To compute the timestamp conversion ratio
- * use this formula for sample based payloads:
- *
- * ClockRate (sam/sec) * SampleSize (Bytes/Sample * Channels) / 1000 =
- * RTPFactor/HXFactor
- *
- * The stream headers RTPTimestampConversionFactor, HXTimestampConversionFactor
- * and TimestampDelivery are added for known and supported payload types.
- *
- * To convert RTP to RMA time multiply the RTP timestamp by the fraction:
- * RTPTimestampConversionFactor / HXTimestampConversionFactor
- * To convert RMA to RTP time multiply the RMA timestamp by the fraction:
- * HXTimestampConversionFactor / RTPTimestampConversionFactor
- *
- * This information should be exposed with IHXRTPTimestampConverter
- */
- /* taken from draft-ietf-avt-profile-new-08.txt */
- const RTPPayloadInfo z_pPayloads[RTP_PAYLOAD_MAP_SIZE] =
- {
- /* encoding RTP RMA TSD BW Channels */
- { "PCMU", 8, 1, 0, 64000, 1 }, // 0 8000/8/1
- { "1016", 8, 1, 1, 0, 1 }, // 1 8000/N/1
- { "G726-32",8, 1, 0, 32000, 1 }, // 2 8000/4/1
- { "GSM", 8, 1, 1, 0, 1 }, // 3 8000/N/1
- { "G723", 8, 1, 1, 0, 1 }, // 4 8000/N/1
- { "DVI4", 8, 1, 0, 32000, 1 }, // 5 8000/4/1
- { "DVI4", 16, 1, 0, 64000, 1 }, // 6 16000/4/1
- { "LPC", 8, 1, 1, 0, 1 }, // 7 8000/N/1
- { "PCMA", 8, 1, 0, 64000, 1 }, // 8 8000/8/1
- { "G722", 8, 1, 0, 64000, 1 }, // 9 8000/8/1
- { "L16", 441, 10, 0, 1411200, 2 }, // 10 44100/16/2
- { "L16", 441, 10, 0, 705600, 1 }, // 11 44100/16/1
- { "QCELP", 8, 1, 1, 0, 1 }, // 12 8000/N/1
- { NULL, 0, 0, 0, 0, 0 }, // 13 reserved
- { "MPA", 90, 1, 1, 0, 0 }, // 14 90000/N
- { "G728", 8, 1, 1, 0, 1 }, // 15 8000/N/1
- { "DVI4", 441, 40, 0, 44100, 1 }, // 16 11025/4/1
- { "DVI4", 441, 20, 0, 88200, 1 }, // 17 22050/4/1
- { "G729", 8, 1, 1, 0, 1 }, // 18 8000/N/1
- { NULL, 0, 0, 0, 0, 0 }, // 19 reserved
- { NULL, 0, 0, 0, 0, 0 }, // 20 unassigned
- { NULL, 0, 0, 0, 0, 0 }, // 21 unassigned
- { NULL, 0, 0, 0, 0, 0 }, // 22 unassigned
- { NULL, 0, 0, 0, 0, 0 }, // 23 unassigned
- { NULL, 0, 0, 0, 0, 0 }, // 24 unassigned
- { "CelB", 90, 1, 1, 0, 0 }, // 25 90000/N
- { "JPEG", 90, 1, 1, 0, 0 }, // 26 90000/N
- { NULL, 0, 0, 0, 0, 0 }, // 27 unassigned
- { "nv", 90, 1, 1, 0, 0 }, // 28 90000/N
- { NULL, 0, 0, 0, 0, 0 }, // 29 unassigned
- { NULL, 0, 0, 0, 0, 0 }, // 30 unassigned
- { "H261", 90, 1, 1, 0, 0 }, // 31 90000/N
- { "MPV", 90, 1, 1, 0, 0 }, // 32 90000/N
- { "MP2T", 90, 1, 1, 0, 0 }, // 33 90000/N
- { "H263", 90, 1, 1, 0, 0 }, // 34 90000/N
- };
- const UINT32 z_cPayloads =
- sizeof(z_pPayloads) /
- sizeof(z_pPayloads[0]);
- /*
- * yet another table for mimetype to samplespersecond
- */
- const MimeTypeToClockRateInfo z_pMimeTypeToClockRate[] =
- {
- { "video/H263-1998", 90000},
- { "audio/mpa-robust", 90000}
- };
- const UINT32 z_cMimeTypeToClockRate =
- sizeof(z_pMimeTypeToClockRate) /
- sizeof(z_pMimeTypeToClockRate[0]);
- const UINT8* SDPGetGSMOpaqueData()
- {
- return p_zGSM_DATA;
- }
- ULONG32 SDPGetGSMOpaqueDataSize()
- {
- return sizeof(p_zGSM_DATA);
- }
- /****************************************************************************
- * SDPIsStaticPayload
- */
- BOOL SDPIsStaticPayload(ULONG32 ulPayloadType)
- {
- return (ulPayloadType < RTP_PAYLOAD_MAP_SIZE);
- }
- /****************************************************************************
- * SDPMapPayloadToRTPFactor
- */
- UINT32 SDPMapPayloadToRTPFactor(ULONG32 ulPayloadType)
- {
- HX_ASSERT(SDPIsStaticPayload(ulPayloadType));
- return z_pPayloads[ulPayloadType].ulRTPFactor;
- }
- /****************************************************************************
- * SDPMapPayloadToRMAFactor
- */
- UINT32 SDPMapPayloadToRMAFactor(ULONG32 ulPayloadType)
- {
- HX_ASSERT(SDPIsStaticPayload(ulPayloadType));
- return z_pPayloads[ulPayloadType].ulHXFactor;
- }
- /****************************************************************************
- * SDPMapPayloadToSamplesPerSecond
- */
- ULONG32 SDPMapPayloadToSamplesPerSecond(ULONG32 ulPayloadType)
- {
- if (SDPIsStaticPayload(ulPayloadType))
- {
- return (ULONG32) (1000.0 *
- ((double) SDPMapPayloadToRTPFactor(ulPayloadType)) /
- ((double) SDPMapPayloadToRMAFactor(ulPayloadType)));
- }
- return 0;
- }
- /****************************************************************************
- * SDPIsTimestampDeliverable
- */
- BOOL SDPIsTimestampDeliverable(ULONG32 ulPayloadType)
- {
- HX_ASSERT(SDPIsStaticPayload(ulPayloadType));
- return z_pPayloads[ulPayloadType].bTimestampDeliv;
- }
- /****************************************************************************
- * SDPMapPayloadToEncodingName
- */
- const char* SDPMapPayloadToEncodingName(ULONG32 ulPayloadType)
- {
- if (SDPIsStaticPayload(ulPayloadType))
- {
- return z_pPayloads[ulPayloadType].pEncoding;
- }
- return NULL;
- }
- /****************************************************************************
- * SDPMapPayloadToEncodingName
- */
- const char* SDPMapPayloadToMimeType(ULONG32 ulPayloadType)
- {
- if (SDPIsStaticPayload(ulPayloadType))
- {
- return z_PayloadToRNMimeMap[ulPayloadType];
- }
- return NULL;
- }
- /****************************************************************************
- * SDPMapPayloadToChannels
- */
- UINT16 SDPMapPayloadToChannels(ULONG32 ulPayloadType)
- {
- if (SDPIsStaticPayload(ulPayloadType))
- {
- return z_pPayloads[ulPayloadType].usChannels;
- }
- return 0;
- }
- /****************************************************************************
- * SDPMapPayloadToBitrate
- */
- ULONG32 SDPMapPayloadToBitrate(ULONG32 ulPayloadType)
- {
- if (SDPIsStaticPayload(ulPayloadType))
- {
- return z_pPayloads[ulPayloadType].ulBitRate;
- }
- return 0;
- }
- /****************************************************************************
- * SDPMapMimeTypeToSampleRate
- */
- ULONG32 SDPMapMimeTypeToSampleRate(const char* pMimeType)
- {
- ULONG32 ulSamplesPerSecond = 0;
- for (ULONG32 ulIdx = 0;
- ulIdx < z_cMimeTypeToClockRate;
- ulIdx++)
- {
- if (z_pMimeTypeToClockRate[ulIdx].pMimeType &&
- !strcasecmp(
- z_pMimeTypeToClockRate[ulIdx].pMimeType,
- pMimeType))
- {
- ulSamplesPerSecond =
- z_pMimeTypeToClockRate[ulIdx].ulSamplesPerSecond;
- break;
- }
- }
- return ulSamplesPerSecond;
- }
- /****************************************************************************
- * SDPMapPayloadToHeaderData
- */
- const UCHAR* SDPMapPayloadToHeaderData(ULONG32 ulPayloadType,
- ULONG32& ulDataSize)
- {
- const RTPPayloadHeaderPair* pPair;
- for (pPair = z_PayloadHeaderPairList;
- pPair->pHeader;
- pPair++)
- {
- if (pPair->ulPayloadType == ulPayloadType)
- {
- ulDataSize = pPair->ulHeaderSize;
- return pPair->pHeader;
- }
- }
-
- ulDataSize = 0;
- return NULL;
- }