Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #ifndef __PJMEDIA_VID_CODEC_UTIL_H__ |
| 21 | #define __PJMEDIA_VID_CODEC_UTIL_H__ |
| 22 | |
| 23 | |
| 24 | /** |
| 25 | * @file vid_codec_util.h |
| 26 | * @brief Video codec utilities. |
| 27 | */ |
| 28 | |
| 29 | #include <pjmedia/vid_codec.h> |
| 30 | #include <pjmedia/sdp_neg.h> |
| 31 | |
| 32 | PJ_BEGIN_DECL |
| 33 | |
| 34 | |
| 35 | /** |
| 36 | * Definition of H.263 parameters. |
| 37 | */ |
| 38 | typedef struct pjmedia_vid_codec_h263_fmtp |
| 39 | { |
| 40 | unsigned mpi_cnt; /**< # of parsed MPI param */ |
| 41 | struct mpi { |
| 42 | pjmedia_rect_size size; /**< Picture size/resolution */ |
| 43 | unsigned val; /**< MPI value */ |
| 44 | } mpi[32]; /**< Minimum Picture Interval parameter */ |
| 45 | |
| 46 | } pjmedia_vid_codec_h263_fmtp; |
| 47 | |
| 48 | |
| 49 | /** |
| 50 | * Parse SDP fmtp of H.263. |
| 51 | * |
| 52 | * @param fmtp The H.263 SDP fmtp to be parsed. |
| 53 | * @param h263_fmtp The parsing result. |
| 54 | * |
| 55 | * @return PJ_SUCCESS on success. |
| 56 | */ |
| 57 | PJ_DECL(pj_status_t) pjmedia_vid_codec_h263_parse_fmtp( |
| 58 | const pjmedia_codec_fmtp *fmtp, |
| 59 | pjmedia_vid_codec_h263_fmtp *h263_fmtp); |
| 60 | |
| 61 | |
| 62 | /** |
| 63 | * Parse, negotiate, and apply the encoding and decoding SDP fmtp of H.263 |
| 64 | * in the specified codec parameter. |
| 65 | * |
| 66 | * @param param The codec parameter. |
| 67 | * |
| 68 | * @return PJ_SUCCESS on success. |
| 69 | */ |
| 70 | PJ_DECL(pj_status_t) pjmedia_vid_codec_h263_apply_fmtp( |
| 71 | pjmedia_vid_codec_param *param); |
| 72 | |
| 73 | |
| 74 | /** |
| 75 | * Definition of H.264 parameters. |
| 76 | */ |
| 77 | typedef struct pjmedia_vid_codec_h264_fmtp |
| 78 | { |
| 79 | /* profile-level-id */ |
| 80 | pj_uint8_t profile_idc; /**< Profile ID */ |
| 81 | pj_uint8_t profile_iop; /**< Profile constraints bits */ |
| 82 | pj_uint8_t level; /**< Level */ |
| 83 | |
| 84 | /* packetization-mode */ |
| 85 | pj_uint8_t packetization_mode; /**< Packetization mode */ |
| 86 | |
| 87 | /* max-mbps, max-fs, max-cpb, max-dpb, and max-br */ |
| 88 | unsigned max_mbps; /**< Max macroblock processing rate */ |
| 89 | unsigned max_fs; /**< Max frame size (in macroblocks) */ |
| 90 | unsigned max_cpb; /**< Max coded picture buffer size */ |
| 91 | unsigned max_dpb; /**< Max decoded picture buffer size */ |
| 92 | unsigned max_br; /**< Max video bit rate */ |
| 93 | |
| 94 | /* sprop-parameter-sets, in NAL units */ |
| 95 | pj_size_t sprop_param_sets_len; /**< Parameter set length */ |
| 96 | pj_uint8_t sprop_param_sets[256]; /**< Parameter set (SPS & PPS), |
| 97 | in NAL unit bitstream */ |
| 98 | |
| 99 | } pjmedia_vid_codec_h264_fmtp; |
| 100 | |
| 101 | |
| 102 | /** |
| 103 | * Parse SDP fmtp of H.264. |
| 104 | * |
| 105 | * @param fmtp The H.264 SDP fmtp to be parsed. |
| 106 | * @param h264_fmtp The parsing result. |
| 107 | * |
| 108 | * @return PJ_SUCCESS on success. |
| 109 | */ |
| 110 | PJ_DECL(pj_status_t) pjmedia_vid_codec_h264_parse_fmtp( |
| 111 | const pjmedia_codec_fmtp *fmtp, |
| 112 | pjmedia_vid_codec_h264_fmtp *h264_fmtp); |
| 113 | |
| 114 | |
| 115 | /** |
| 116 | * Match H.264 format in the SDP media offer and answer. This will compare |
| 117 | * H.264 identifier parameters in SDP fmtp, i.e: "profile-level-id" and |
| 118 | * "packetization-mode" fields. For better interoperability, when the option |
| 119 | * #PJMEDIA_SDP_NEG_FMT_MATCH_ALLOW_MODIFY_ANSWER is set, this function |
| 120 | * may update the answer so the parameters in the answer match to ones |
| 121 | * in the offer. |
| 122 | * |
| 123 | * @param pool The memory pool. |
| 124 | * @param offer The SDP media offer. |
| 125 | * @param o_fmt_idx Index of the H.264 format in the SDP media offer. |
| 126 | * @param answer The SDP media answer. |
| 127 | * @param a_fmt_idx Index of the H.264 format in the SDP media answer. |
| 128 | * @param option The format matching option, see |
| 129 | * #pjmedia_sdp_neg_fmt_match_flag. |
| 130 | * |
| 131 | * @return PJ_SUCCESS when the formats in offer and answer match. |
| 132 | */ |
| 133 | PJ_DECL(pj_status_t) pjmedia_vid_codec_h264_match_sdp( |
| 134 | pj_pool_t *pool, |
| 135 | pjmedia_sdp_media *offer, |
| 136 | unsigned o_fmt_idx, |
| 137 | pjmedia_sdp_media *answer, |
| 138 | unsigned a_fmt_idx, |
| 139 | unsigned option); |
| 140 | |
| 141 | |
| 142 | /** |
| 143 | * Parse and apply the encoding and decoding SDP fmtp of H.264 in the |
| 144 | * specified codec parameter. This will validate size and fps to conform |
| 145 | * to H.264 level specified in SDP fmtp "profile-level-id". |
| 146 | * |
| 147 | * @param param The codec parameter. |
| 148 | * |
| 149 | * @return PJ_SUCCESS on success. |
| 150 | */ |
| 151 | PJ_DECL(pj_status_t) pjmedia_vid_codec_h264_apply_fmtp( |
| 152 | pjmedia_vid_codec_param *param); |
| 153 | |
| 154 | |
| 155 | PJ_END_DECL |
| 156 | |
| 157 | |
| 158 | #endif /* __PJMEDIA_VID_CODEC_UTIL_H__ */ |