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Diffstat (limited to 'pjmedia/include/pjmedia/vid_codec_util.h')
| -rw-r--r-- | pjmedia/include/pjmedia/vid_codec_util.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/pjmedia/include/pjmedia/vid_codec_util.h b/pjmedia/include/pjmedia/vid_codec_util.h new file mode 100644 index 00000000..e34440a4 --- /dev/null +++ b/pjmedia/include/pjmedia/vid_codec_util.h @@ -0,0 +1,158 @@ +/* $Id$ */ +/* + * Copyright (C) 2008-2009 Teluu Inc. (http://www.teluu.com) + * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> + * + * This program 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 2 of the License, or + * (at your option) any later version. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef __PJMEDIA_VID_CODEC_UTIL_H__ +#define __PJMEDIA_VID_CODEC_UTIL_H__ + + +/** + * @file vid_codec_util.h + * @brief Video codec utilities. + */ + +#include <pjmedia/vid_codec.h> +#include <pjmedia/sdp_neg.h> + +PJ_BEGIN_DECL + + +/** + * Definition of H.263 parameters. + */ +typedef struct pjmedia_vid_codec_h263_fmtp +{ + unsigned mpi_cnt; /**< # of parsed MPI param */ + struct mpi { + pjmedia_rect_size size; /**< Picture size/resolution */ + unsigned val; /**< MPI value */ + } mpi[32]; /**< Minimum Picture Interval parameter */ + +} pjmedia_vid_codec_h263_fmtp; + + +/** + * Parse SDP fmtp of H.263. + * + * @param fmtp The H.263 SDP fmtp to be parsed. + * @param h263_fmtp The parsing result. + * + * @return PJ_SUCCESS on success. + */ +PJ_DECL(pj_status_t) pjmedia_vid_codec_h263_parse_fmtp( + const pjmedia_codec_fmtp *fmtp, + pjmedia_vid_codec_h263_fmtp *h263_fmtp); + + +/** + * Parse, negotiate, and apply the encoding and decoding SDP fmtp of H.263 + * in the specified codec parameter. + * + * @param param The codec parameter. + * + * @return PJ_SUCCESS on success. + */ +PJ_DECL(pj_status_t) pjmedia_vid_codec_h263_apply_fmtp( + pjmedia_vid_codec_param *param); + + +/** + * Definition of H.264 parameters. + */ +typedef struct pjmedia_vid_codec_h264_fmtp +{ + /* profile-level-id */ + pj_uint8_t profile_idc; /**< Profile ID */ + pj_uint8_t profile_iop; /**< Profile constraints bits */ + pj_uint8_t level; /**< Level */ + + /* packetization-mode */ + pj_uint8_t packetization_mode; /**< Packetization mode */ + + /* max-mbps, max-fs, max-cpb, max-dpb, and max-br */ + unsigned max_mbps; /**< Max macroblock processing rate */ + unsigned max_fs; /**< Max frame size (in macroblocks) */ + unsigned max_cpb; /**< Max coded picture buffer size */ + unsigned max_dpb; /**< Max decoded picture buffer size */ + unsigned max_br; /**< Max video bit rate */ + + /* sprop-parameter-sets, in NAL units */ + pj_size_t sprop_param_sets_len; /**< Parameter set length */ + pj_uint8_t sprop_param_sets[256]; /**< Parameter set (SPS & PPS), + in NAL unit bitstream */ + +} pjmedia_vid_codec_h264_fmtp; + + +/** + * Parse SDP fmtp of H.264. + * + * @param fmtp The H.264 SDP fmtp to be parsed. + * @param h264_fmtp The parsing result. + * + * @return PJ_SUCCESS on success. + */ +PJ_DECL(pj_status_t) pjmedia_vid_codec_h264_parse_fmtp( + const pjmedia_codec_fmtp *fmtp, + pjmedia_vid_codec_h264_fmtp *h264_fmtp); + + +/** + * Match H.264 format in the SDP media offer and answer. This will compare + * H.264 identifier parameters in SDP fmtp, i.e: "profile-level-id" and + * "packetization-mode" fields. For better interoperability, when the option + * #PJMEDIA_SDP_NEG_FMT_MATCH_ALLOW_MODIFY_ANSWER is set, this function + * may update the answer so the parameters in the answer match to ones + * in the offer. + * + * @param pool The memory pool. + * @param offer The SDP media offer. + * @param o_fmt_idx Index of the H.264 format in the SDP media offer. + * @param answer The SDP media answer. + * @param a_fmt_idx Index of the H.264 format in the SDP media answer. + * @param option The format matching option, see + * #pjmedia_sdp_neg_fmt_match_flag. + * + * @return PJ_SUCCESS when the formats in offer and answer match. + */ +PJ_DECL(pj_status_t) pjmedia_vid_codec_h264_match_sdp( + pj_pool_t *pool, + pjmedia_sdp_media *offer, + unsigned o_fmt_idx, + pjmedia_sdp_media *answer, + unsigned a_fmt_idx, + unsigned option); + + +/** + * Parse and apply the encoding and decoding SDP fmtp of H.264 in the + * specified codec parameter. This will validate size and fps to conform + * to H.264 level specified in SDP fmtp "profile-level-id". + * + * @param param The codec parameter. + * + * @return PJ_SUCCESS on success. + */ +PJ_DECL(pj_status_t) pjmedia_vid_codec_h264_apply_fmtp( + pjmedia_vid_codec_param *param); + + +PJ_END_DECL + + +#endif /* __PJMEDIA_VID_CODEC_UTIL_H__ */ |