| 1 | /* |
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| 2 | mediastreamer2 x264 plugin |
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| 3 | Copyright (C) 2006-2010 Belledonne Communications SARL (simon.morlat@linphone.org) |
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| 4 | |
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| 5 | This program is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU General Public License |
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| 7 | as published by the Free Software Foundation; either version 2 |
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| 8 | of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | This program is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | GNU General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with this program; if not, write to the Free Software |
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| 17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | */ |
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| 19 | |
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| 20 | #include "mediastreamer2/msfilter.h" |
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| 21 | #include "mediastreamer2/msticker.h" |
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| 22 | #include "mediastreamer2/msvideo.h" |
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| 23 | #include "mediastreamer2/rfc3984.h" |
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| 24 | |
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| 25 | #ifdef _MSC_VER |
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| 26 | #include <stdint.h> |
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| 27 | #endif |
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| 28 | |
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| 29 | #include <x264.h> |
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| 30 | |
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| 31 | #ifndef VERSION |
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| 32 | #define VERSION "1.4.1" |
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| 33 | #endif |
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| 34 | |
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| 35 | |
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| 36 | #define RC_MARGIN 10000 /*bits per sec*/ |
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| 37 | |
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| 38 | /* |
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| 39 | * WARNING! |
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| 40 | * |
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| 41 | * The following definition is aimed to build a forced high-resolution |
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| 42 | * profile with fast encoding parameters for a single-core Android smartphone |
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| 43 | * in order to obtain a reasonable framerate. |
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| 44 | * |
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| 45 | * You SHOULD NOT use it unless you know what you are doing. |
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| 46 | * |
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| 47 | * Maximal observed framerates: 12 frames/s with CIF, 3 frames/s with VGA, |
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| 48 | * on a Samsung GalaxyS I9000. |
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| 49 | * |
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| 50 | * Since this is a rude, hard-coded modification, it MAY induce unstable |
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| 51 | * behaviours: caution is advised. |
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| 52 | * |
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| 53 | * To enable this special build, uncomment the following definition of the |
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| 54 | * SPECIAL_HIGHRES_BUILD pre-processor variable and set it to a |
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| 55 | * MediaStreamer2-compliant video size (e.g. MS_VIDEO_SIZE_CIF). |
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| 56 | * |
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| 57 | * You MUST keep the definition of the SPECIAL_HIGHRES_BUILD_CRF variable. |
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| 58 | * You MAY change its value which SHOULD remain between 22 and 28. |
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| 59 | * |
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| 60 | * |
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| 61 | * In order to ensure JNI compatibility: |
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| 62 | * You MUST have the org.linphone.BandwithManager.currentProfile set to |
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| 63 | * HIGH_RESOLUTION in the constructor. |
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| 64 | * You MUST have the HIGH_RESOLUTION case of |
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| 65 | * org.linphone.BandwithManager.maximumVideoSize(int, boolean) returning the |
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| 66 | * MediaStreamer2-compliant video size you want; you MAY need to define the |
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| 67 | * size in org.linphone.core.VideoSize if it does not exist. |
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| 68 | * You SHOULD have org.linphone.BandwithManager.bandwidthes[0] set to |
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| 69 | * {1024, 1024} to tell Linphone to use maximal bandwidth. |
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| 70 | */ |
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| 71 | #define SPECIAL_HIGHRES_BUILD MS_VIDEO_SIZE_QVGA |
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| 72 | #define SPECIAL_HIGHRES_BUILD_CRF 28 |
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| 73 | |
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| 74 | /* the goal of this small object is to tell when to send I frames at startup: |
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| 75 | at 2 and 4 seconds*/ |
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| 76 | typedef struct VideoStarter{ |
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| 77 | uint64_t next_time; |
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| 78 | int i_frame_count; |
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| 79 | }VideoStarter; |
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| 80 | |
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| 81 | static void video_starter_init(VideoStarter *vs){ |
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| 82 | vs->next_time=0; |
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| 83 | vs->i_frame_count=0; |
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| 84 | } |
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| 85 | |
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| 86 | static void video_starter_first_frame(VideoStarter *vs, uint64_t curtime){ |
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| 87 | vs->next_time=curtime+2000; |
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| 88 | } |
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| 89 | |
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| 90 | static bool_t video_starter_need_i_frame(VideoStarter *vs, uint64_t curtime){ |
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| 91 | if (vs->next_time==0) return FALSE; |
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| 92 | if (curtime>=vs->next_time){ |
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| 93 | vs->i_frame_count++; |
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| 94 | if (vs->i_frame_count==1){ |
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| 95 | vs->next_time+=2000; |
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| 96 | }else{ |
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| 97 | vs->next_time=0; |
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| 98 | } |
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| 99 | return TRUE; |
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| 100 | } |
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| 101 | return FALSE; |
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| 102 | } |
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| 103 | |
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| 104 | typedef struct _EncData{ |
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| 105 | x264_t *enc; |
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| 106 | MSVideoSize vsize; |
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| 107 | int bitrate; |
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| 108 | float fps; |
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| 109 | int mode; |
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| 110 | uint64_t framenum; |
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| 111 | Rfc3984Context *packer; |
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| 112 | int keyframe_int; |
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| 113 | VideoStarter starter; |
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| 114 | bool_t generate_keyframe; |
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| 115 | }EncData; |
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| 116 | |
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| 117 | |
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| 118 | static void enc_init(MSFilter *f){ |
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| 119 | EncData *d=ms_new(EncData,1); |
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| 120 | d->enc=NULL; |
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| 121 | MS_VIDEO_SIZE_ASSIGN(d->vsize,CIF); |
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| 122 | d->bitrate=384000; |
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| 123 | d->fps=30; |
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| 124 | d->keyframe_int=10; /*10 seconds */ |
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| 125 | d->mode=0; |
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| 126 | d->framenum=0; |
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| 127 | d->generate_keyframe=FALSE; |
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| 128 | d->packer=NULL; |
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| 129 | f->data=d; |
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| 130 | } |
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| 131 | |
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| 132 | static void enc_uninit(MSFilter *f){ |
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| 133 | EncData *d=(EncData*)f->data; |
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| 134 | ms_free(d); |
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| 135 | } |
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| 136 | |
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| 137 | static void enc_preprocess(MSFilter *f){ |
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| 138 | EncData *d=(EncData*)f->data; |
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| 139 | x264_param_t params; |
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| 140 | float bitrate; |
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| 141 | |
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| 142 | d->packer=rfc3984_new(); |
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| 143 | rfc3984_set_mode(d->packer,d->mode); |
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| 144 | rfc3984_enable_stap_a(d->packer,FALSE); |
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| 145 | |
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| 146 | x264_param_default(¶ms); |
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| 147 | |
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| 148 | params.i_threads=X264_THREADS_AUTO; |
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| 149 | params.i_sync_lookahead=0; |
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| 150 | params.i_width=d->vsize.width; |
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| 151 | params.i_height=d->vsize.height; |
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| 152 | params.i_fps_num=(int)d->fps; |
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| 153 | params.i_fps_den=1; |
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| 154 | params.i_slice_max_size=ms_get_payload_max_size()-100; //-100 security margin |
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| 155 | params.i_keyint_max=250; |
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| 156 | params.i_keyint_min=25; |
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| 157 | params.i_scenecut_threshold=40; |
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| 158 | params.b_deblocking_filter=1; |
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| 159 | params.i_bframe_adaptive=X264_B_ADAPT_FAST; |
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| 160 | params.analyse.intra=X264_ANALYSE_I4x4 & X264_ANALYSE_I8x8 & X264_ANALYSE_PSUB8x8; |
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| 161 | params.analyse.inter=X264_ANALYSE_I4x4 & X264_ANALYSE_I8x8 & X264_ANALYSE_PSUB8x8; |
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| 162 | params.analyse.b_transform_8x8=1; |
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| 163 | params.analyse.b_fast_pskip=1; |
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| 164 | params.analyse.i_me_method=X264_ME_HEX; |
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| 165 | params.analyse.i_me_range=16; |
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| 166 | params.analyse.i_direct_mv_pred=1; |
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| 167 | params.analyse.b_chroma_me=1; |
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| 168 | |
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| 169 | bitrate=(float)d->bitrate*0.92; |
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| 170 | if (bitrate>RC_MARGIN) |
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| 171 | bitrate-=RC_MARGIN; |
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| 172 | |
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| 173 | params.rc.i_rc_method = X264_RC_CRF; |
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| 174 | params.rc.f_rf_constant=SPECIAL_HIGHRES_BUILD_CRF; |
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| 175 | params.rc.i_qp_min=10; |
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| 176 | params.rc.i_qp_max=51; |
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| 177 | params.rc.i_qp_step=10; |
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| 178 | params.rc.f_qcompress=0.6; |
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| 179 | |
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| 180 | params.rc.i_lookahead=0; |
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| 181 | /*enable this by config ?*/ |
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| 182 | /* |
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| 183 | params.i_keyint_max = (int)d->fps*d->keyframe_int; |
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| 184 | params.i_keyint_min = (int)d->fps; |
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| 185 | */ |
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| 186 | params.b_repeat_headers=1; |
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| 187 | params.b_annexb=0; |
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| 188 | |
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| 189 | //these parameters must be set so that our stream is baseline |
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| 190 | params.analyse.b_transform_8x8 = 0; |
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| 191 | params.b_cabac = 0; |
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| 192 | params.i_cqm_preset = X264_CQM_FLAT; // X264_CQM_JVT; ? |
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| 193 | params.i_bframe = 0; |
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| 194 | params.analyse.i_weighted_pred = X264_WEIGHTP_NONE; |
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| 195 | |
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| 196 | // tune --no-latency |
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| 197 | params.i_bframe = 0; |
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| 198 | |
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| 199 | d->enc=x264_encoder_open(¶ms); |
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| 200 | if (d->enc==NULL) ms_error("Fail to create x264 encoder."); |
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| 201 | d->framenum=0; |
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| 202 | video_starter_init(&d->starter); |
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| 203 | } |
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| 204 | |
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| 205 | static void x264_nals_to_msgb(x264_nal_t *xnals, int num_nals, MSQueue * nalus){ |
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| 206 | int i; |
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| 207 | mblk_t *m; |
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| 208 | /*int bytes;*/ |
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| 209 | for (i=0;i<num_nals;++i){ |
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| 210 | m=allocb(xnals[i].i_payload+10,0); |
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| 211 | |
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| 212 | memcpy(m->b_wptr,xnals[i].p_payload+4,xnals[i].i_payload-4); |
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| 213 | m->b_wptr+=xnals[i].i_payload-4; |
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| 214 | if (xnals[i].i_type==7) { |
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| 215 | ms_message("A SPS is being sent."); |
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| 216 | }else if (xnals[i].i_type==8) { |
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| 217 | ms_message("A PPS is being sent."); |
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| 218 | } |
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| 219 | ms_queue_put(nalus,m); |
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| 220 | } |
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| 221 | } |
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| 222 | |
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| 223 | static void enc_process(MSFilter *f){ |
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| 224 | EncData *d=(EncData*)f->data; |
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| 225 | uint32_t ts=f->ticker->time*90LL; |
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| 226 | mblk_t *im; |
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| 227 | MSPicture pic; |
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| 228 | MSQueue nalus; |
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| 229 | ms_queue_init(&nalus); |
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| 230 | while((im=ms_queue_get(f->inputs[0]))!=NULL){ |
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| 231 | if (ms_yuv_buf_init_from_mblk(&pic,im)==0){ |
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| 232 | x264_picture_t xpic; |
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| 233 | x264_picture_t oxpic; |
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| 234 | x264_nal_t *xnals=NULL; |
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| 235 | int num_nals=0; |
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| 236 | |
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| 237 | memset(&xpic, 0, sizeof(xpic)); |
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| 238 | memset(&oxpic, 0, sizeof(oxpic)); |
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| 239 | |
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| 240 | /*send I frame 2 seconds and 4 seconds after the beginning */ |
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| 241 | if (video_starter_need_i_frame(&d->starter,f->ticker->time)) |
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| 242 | d->generate_keyframe=TRUE; |
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| 243 | |
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| 244 | if (d->generate_keyframe){ |
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| 245 | xpic.i_type=X264_TYPE_IDR; |
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| 246 | d->generate_keyframe=FALSE; |
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| 247 | }else xpic.i_type=X264_TYPE_AUTO; |
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| 248 | xpic.i_qpplus1=0; |
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| 249 | xpic.i_pts=d->framenum; |
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| 250 | xpic.param=NULL; |
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| 251 | xpic.img.i_csp=X264_CSP_I420; |
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| 252 | xpic.img.i_plane=3; |
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| 253 | xpic.img.i_stride[0]=pic.strides[0]; |
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| 254 | xpic.img.i_stride[1]=pic.strides[1]; |
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| 255 | xpic.img.i_stride[2]=pic.strides[2]; |
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| 256 | xpic.img.i_stride[3]=0; |
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| 257 | xpic.img.plane[0]=pic.planes[0]; |
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| 258 | xpic.img.plane[1]=pic.planes[1]; |
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| 259 | xpic.img.plane[2]=pic.planes[2]; |
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| 260 | xpic.img.plane[3]=0; |
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| 261 | |
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| 262 | if (x264_encoder_encode(d->enc,&xnals,&num_nals,&xpic,&oxpic)>=0){ |
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| 263 | x264_nals_to_msgb(xnals,num_nals,&nalus); |
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| 264 | if (num_nals == 0) |
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| 265 | ms_message("Delayed frames info: current=%d max=%d\n", |
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| 266 | x264_encoder_delayed_frames(d->enc), |
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| 267 | x264_encoder_maximum_delayed_frames(d->enc)); |
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| 268 | rfc3984_pack(d->packer,&nalus,f->outputs[0],ts); |
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| 269 | d->framenum++; |
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| 270 | if (d->framenum==0) |
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| 271 | video_starter_first_frame(&d->starter,f->ticker->time); |
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| 272 | }else{ |
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| 273 | ms_error("x264_encoder_encode() error."); |
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| 274 | } |
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| 275 | } |
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| 276 | freemsg(im); |
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| 277 | } |
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| 278 | } |
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| 279 | |
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| 280 | static void enc_postprocess(MSFilter *f){ |
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| 281 | EncData *d=(EncData*)f->data; |
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| 282 | rfc3984_destroy(d->packer); |
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| 283 | d->packer=NULL; |
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| 284 | if (d->enc!=NULL){ |
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| 285 | x264_encoder_close(d->enc); |
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| 286 | d->enc=NULL; |
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| 287 | } |
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| 288 | } |
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| 289 | |
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| 290 | static int enc_set_br(MSFilter *f, void *arg){ |
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| 291 | EncData *d=(EncData*)f->data; |
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| 292 | d->bitrate=*(int*)arg; |
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| 293 | |
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| 294 | #ifndef ANDROID | defined(TARGET_OS_IPHONE) |
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| 295 | if (d->bitrate>=1024000){ |
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| 296 | MS_VIDEO_SIZE_ASSIGN(d->vsize,VGA); |
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| 297 | d->fps=25; |
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| 298 | }else if (d->bitrate>=512000){ |
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| 299 | MS_VIDEO_SIZE_ASSIGN(d->vsize,VGA); |
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| 300 | d->fps=25; |
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| 301 | }else if (d->bitrate>=384000){ |
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| 302 | MS_VIDEO_SIZE_ASSIGN(d->vsize,CIF); |
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| 303 | d->fps=25; |
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| 304 | }else if (d->bitrate>=256000){ |
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| 305 | MS_VIDEO_SIZE_ASSIGN(d->vsize,CIF); |
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| 306 | d->fps=15; |
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| 307 | }else if (d->bitrate>=128000){ |
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| 308 | MS_VIDEO_SIZE_ASSIGN(d->vsize,CIF); |
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| 309 | d->fps=15; |
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| 310 | }else if (d->bitrate>=64000){ |
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| 311 | MS_VIDEO_SIZE_ASSIGN(d->vsize,CIF); |
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| 312 | d->fps=10; |
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| 313 | }else if (d->bitrate>=32000){ |
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| 314 | MS_VIDEO_SIZE_ASSIGN(d->vsize,QCIF); |
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| 315 | d->fps=10; |
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| 316 | }else{ |
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| 317 | MS_VIDEO_SIZE_ASSIGN(d->vsize,QCIF); |
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| 318 | d->fps=5; |
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| 319 | } |
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| 320 | #endif |
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| 321 | |
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| 322 | #ifdef ANDROID |
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| 323 | /* we have to limit size and fps on android due to limited CPU */ |
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| 324 | d->vsize=MS_VIDEO_SIZE_QCIF; |
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| 325 | if (d->fps>7) d->fps=7; |
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| 326 | #endif |
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| 327 | |
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| 328 | ms_message("bitrate set to %i",d->bitrate); |
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| 329 | return 0; |
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| 330 | } |
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| 331 | |
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| 332 | static int enc_set_fps(MSFilter *f, void *arg){ |
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| 333 | EncData *d=(EncData*)f->data; |
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| 334 | d->fps=*(float*)arg; |
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| 335 | return 0; |
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| 336 | } |
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| 337 | |
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| 338 | static int enc_get_fps(MSFilter *f, void *arg){ |
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| 339 | EncData *d=(EncData*)f->data; |
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| 340 | *(float*)arg=d->fps; |
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| 341 | return 0; |
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| 342 | } |
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| 343 | |
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| 344 | static int enc_get_vsize(MSFilter *f, void *arg){ |
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| 345 | EncData *d=(EncData*)f->data; |
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| 346 | *(MSVideoSize*)arg=d->vsize; |
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| 347 | return 0; |
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| 348 | } |
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| 349 | |
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| 350 | static int enc_set_vsize(MSFilter *f, void *arg){ |
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| 351 | EncData *d=(EncData*)f->data; |
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| 352 | |
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| 353 | d->vsize=*(MSVideoSize*)arg; |
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| 354 | |
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| 355 | return 0; |
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| 356 | } |
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| 357 | |
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| 358 | static int enc_add_fmtp(MSFilter *f, void *arg){ |
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| 359 | EncData *d=(EncData*)f->data; |
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| 360 | const char *fmtp=(const char *)arg; |
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| 361 | char value[12]; |
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| 362 | if (fmtp_get_value(fmtp,"packetization-mode",value,sizeof(value))){ |
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| 363 | d->mode=atoi(value); |
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| 364 | ms_message("packetization-mode set to %i",d->mode); |
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| 365 | } |
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| 366 | return 0; |
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| 367 | } |
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| 368 | |
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| 369 | static int enc_req_vfu(MSFilter *f, void *arg){ |
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| 370 | EncData *d=(EncData*)f->data; |
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| 371 | d->generate_keyframe=TRUE; |
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| 372 | return 0; |
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| 373 | } |
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| 374 | |
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| 375 | |
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| 376 | static MSFilterMethod enc_methods[]={ |
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| 377 | { MS_FILTER_SET_FPS , enc_set_fps }, |
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| 378 | { MS_FILTER_SET_BITRATE , enc_set_br }, |
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| 379 | { MS_FILTER_GET_FPS , enc_get_fps }, |
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| 380 | { MS_FILTER_GET_VIDEO_SIZE, enc_get_vsize }, |
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| 381 | { MS_FILTER_SET_VIDEO_SIZE, enc_set_vsize }, |
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| 382 | { MS_FILTER_ADD_FMTP , enc_add_fmtp }, |
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| 383 | { MS_FILTER_REQ_VFU , enc_req_vfu }, |
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| 384 | { 0 , NULL } |
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| 385 | }; |
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| 386 | |
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| 387 | #ifndef _MSC_VER |
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| 388 | |
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| 389 | static MSFilterDesc x264_enc_desc={ |
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| 390 | .id=MS_FILTER_PLUGIN_ID, |
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| 391 | .name="MSX264Enc", |
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| 392 | .text="A H264 encoder based on x264 project", |
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| 393 | .category=MS_FILTER_ENCODER, |
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| 394 | .enc_fmt="H264", |
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| 395 | .ninputs=1, |
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| 396 | .noutputs=1, |
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| 397 | .init=enc_init, |
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| 398 | .preprocess=enc_preprocess, |
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| 399 | .process=enc_process, |
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| 400 | .postprocess=enc_postprocess, |
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| 401 | .uninit=enc_uninit, |
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| 402 | .methods=enc_methods |
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| 403 | }; |
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| 404 | |
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| 405 | #else |
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| 406 | |
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| 407 | static MSFilterDesc x264_enc_desc={ |
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| 408 | MS_FILTER_PLUGIN_ID, |
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| 409 | "MSX264Enc", |
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| 410 | "A H264 encoder based on x264 project", |
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| 411 | MS_FILTER_ENCODER, |
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| 412 | "H264", |
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| 413 | 1, |
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| 414 | 1, |
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| 415 | enc_init, |
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| 416 | enc_preprocess, |
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| 417 | enc_process, |
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| 418 | enc_postprocess, |
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| 419 | enc_uninit, |
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| 420 | enc_methods |
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| 421 | }; |
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| 422 | |
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| 423 | #endif |
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| 424 | |
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| 425 | MS2_PUBLIC void libmsx264_init(void){ |
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| 426 | ms_filter_register(&x264_enc_desc); |
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| 427 | ms_message("ms264-" VERSION " plugin registered."); |
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| 428 | } |
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| 429 | |
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