[6663] | 1 | /* |
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| 2 | orxonox - the future of 3D-vertical-scrollers |
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| 3 | |
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| 4 | Copyright (C) 2006 orx |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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| 11 | ### File Specific: |
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| 12 | main-programmer: David Hasenfratz |
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| 13 | co-programmer: |
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| 14 | */ |
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| 15 | |
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| 16 | #include "recorder.h" |
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| 17 | |
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| 18 | #include "load_param.h" |
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| 19 | #include "factory.h" |
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| 20 | #include "resource_manager.h" |
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| 21 | #include "state.h" |
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| 22 | |
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| 23 | using namespace std; |
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| 24 | |
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| 25 | CREATE_FACTORY(Recorder, CL_RECORDER); |
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| 26 | |
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| 27 | |
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| 28 | Recorder::Recorder (const TiXmlElement* root) |
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| 29 | { |
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| 30 | this->setClassID(CL_RECORDER, "Recorder"); |
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| 31 | |
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| 32 | // initialize libavcodec, and register all codecs and formats |
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| 33 | av_register_all(); |
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| 34 | |
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[6681] | 35 | // Default values |
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| 36 | stream_duration = 10; |
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| 37 | stream_frame_rate = 20; |
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| 38 | |
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[6663] | 39 | this->loadParams(root); |
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| 40 | |
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| 41 | this->toList(OM_COMMON); |
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| 42 | } |
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| 43 | |
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| 44 | |
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| 45 | Recorder::~Recorder () |
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| 46 | { |
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| 47 | |
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| 48 | } |
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| 49 | |
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| 50 | |
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| 51 | void Recorder::loadParams(const TiXmlElement* root) |
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| 52 | { |
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| 53 | WorldEntity::loadParams(root); |
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| 54 | |
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[6681] | 55 | LoadParam(root, "duration", this, Recorder, setStreamDuration); |
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| 56 | LoadParam(root, "fps", this, Recorder, setFPS); |
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[6663] | 57 | LoadParam(root, "name", this, Recorder, initVideo); |
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| 58 | } |
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| 59 | |
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| 60 | |
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[6681] | 61 | void Recorder::setStreamDuration(float duration) |
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| 62 | { |
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| 63 | this->stream_duration = duration; |
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| 64 | } |
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| 65 | |
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| 66 | |
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| 67 | void Recorder::setFPS(float fps) |
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| 68 | { |
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| 69 | this->stream_frame_rate = fps; |
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| 70 | } |
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| 71 | |
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| 72 | |
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[6663] | 73 | void Recorder::initVideo(const char* filename) |
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| 74 | { |
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| 75 | frame_count = 0; |
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[6681] | 76 | time = 0; |
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| 77 | stream_nb_frames = (int)(stream_duration * stream_frame_rate); |
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[6663] | 78 | |
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| 79 | // auto detect the output format from the name, default is mpeg |
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| 80 | output_format = guess_format(NULL, filename, NULL); |
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| 81 | if (!output_format) |
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| 82 | { |
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| 83 | PRINTF(0)("Could not deduce output format from file extension: using MPEG.\n"); |
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| 84 | output_format = guess_format("mpeg", NULL, NULL); |
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| 85 | } |
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| 86 | if (!output_format) |
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| 87 | PRINTF(1)("Could not find suitable output format\n"); |
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| 88 | |
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| 89 | // allocate the output media context |
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| 90 | format_context = av_alloc_format_context(); |
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| 91 | if (!format_context) |
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| 92 | PRINTF(1)("Memory error\n"); |
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| 93 | |
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| 94 | format_context->oformat = output_format; |
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| 95 | snprintf(format_context->filename, sizeof(format_context->filename), "%s", filename); |
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| 96 | |
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| 97 | // add video stream using the default format codec and initialize the codec |
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| 98 | if (output_format->video_codec != CODEC_ID_NONE) |
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| 99 | this->addVideoStream(); |
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| 100 | |
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| 101 | // set the output parameters (must be done even if no parameters) |
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| 102 | if (av_set_parameters(format_context, NULL) < 0) |
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| 103 | PRINTF(1)("Invalid output format parameters\n"); |
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| 104 | |
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| 105 | // print some information |
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| 106 | dump_format(format_context, 0, filename, 1); |
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| 107 | |
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| 108 | // now that all the parameters are set, we can open the |
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| 109 | // video codec and allocate the necessary encode buffer |
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| 110 | if(video_stream) |
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| 111 | this->openVideo(); |
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| 112 | |
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| 113 | // open the output file, if needed |
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| 114 | if(!(output_format->flags & AVFMT_NOFILE)) |
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| 115 | { |
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| 116 | if(url_fopen(&format_context->pb, filename, URL_WRONLY) < 0) |
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| 117 | PRINTF(1)("Could not open %s\n", filename); |
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| 118 | } |
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| 119 | |
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| 120 | // write the stream header, if any |
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| 121 | av_write_header(format_context); |
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| 122 | } |
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| 123 | |
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| 124 | void Recorder::closeVideo() |
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| 125 | { |
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| 126 | avcodec_close(video_stream->codec); |
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| 127 | av_free(picture->data[0]); |
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| 128 | av_free(picture); |
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| 129 | av_free(buffer); |
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| 130 | |
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| 131 | // write the trailer, if any |
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| 132 | av_write_trailer(format_context); |
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| 133 | |
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| 134 | // free the streams |
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| 135 | for(int i = 0; i < format_context->nb_streams; i++) |
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| 136 | av_freep(&format_context->streams[i]); |
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| 137 | |
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| 138 | // close the output file |
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| 139 | if (!(output_format->flags & AVFMT_NOFILE)) |
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| 140 | url_fclose(&format_context->pb); |
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| 141 | |
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| 142 | // free the stream |
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| 143 | av_free(format_context); |
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| 144 | } |
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| 145 | |
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| 146 | |
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| 147 | void Recorder::openVideo() |
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| 148 | { |
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| 149 | codec_context = video_stream->codec; |
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| 150 | |
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| 151 | // find the video encoder |
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| 152 | codec = avcodec_find_encoder(codec_context->codec_id); |
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| 153 | if(!codec) |
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| 154 | PRINTF(1)("codec not found\n"); |
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| 155 | |
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| 156 | // open the codec |
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| 157 | if(avcodec_open(codec_context, codec) < 0) |
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| 158 | PRINTF(1)("could not open codec\n"); |
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| 159 | |
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| 160 | buffer = NULL; |
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| 161 | if(!(format_context->oformat->flags & AVFMT_RAWPICTURE)) |
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| 162 | { |
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| 163 | // allocate output buffer |
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| 164 | // XXX: API change will be done |
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| 165 | buffer_size = 200000; |
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| 166 | buffer = new uint8_t[buffer_size]; |
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| 167 | } |
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| 168 | |
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| 169 | // allocate the encoded raw picture |
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| 170 | this->allocPicture(); |
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| 171 | if(!picture) |
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| 172 | PRINTF(0)("Could not allocate picture\n"); |
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| 173 | } |
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| 174 | |
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| 175 | |
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| 176 | void Recorder::allocPicture() |
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| 177 | { |
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| 178 | picture = avcodec_alloc_frame(); |
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| 179 | if(!picture) |
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| 180 | { |
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| 181 | picture = NULL; |
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| 182 | return; |
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| 183 | } |
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| 184 | size = avpicture_get_size(codec_context->pix_fmt, width, height); |
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| 185 | picture_buf = new uint8_t[size]; |
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| 186 | if(!picture_buf) |
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| 187 | { |
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| 188 | av_free(picture); |
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| 189 | return; |
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| 190 | } |
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| 191 | avpicture_fill((AVPicture *)picture, picture_buf, |
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| 192 | codec_context->pix_fmt, width, height); |
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[6681] | 193 | |
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| 194 | |
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| 195 | |
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| 196 | RGB_frame = avcodec_alloc_frame(); |
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| 197 | |
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| 198 | // Determine required buffer size and allocate buffer |
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| 199 | size = avpicture_get_size(PIX_FMT_RGB24, width, height); |
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| 200 | picture_buf = new uint8_t[size]; |
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| 201 | |
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| 202 | // Assign appropriate parts of buffer to image planes in RGB_frame |
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| 203 | avpicture_fill((AVPicture *)RGB_frame, picture_buf, PIX_FMT_RGB24, width, height); |
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[6663] | 204 | } |
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| 205 | |
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| 206 | |
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| 207 | // add a video output stream |
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| 208 | void Recorder::addVideoStream() |
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| 209 | { |
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| 210 | video_stream = av_new_stream(format_context, 0); |
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| 211 | if (!video_stream) |
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| 212 | PRINTF(1)("Could not alloc stream\n"); |
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| 213 | |
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| 214 | codec_context = video_stream->codec; |
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| 215 | codec_context->codec_id = output_format->video_codec; |
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| 216 | codec_context->codec_type = CODEC_TYPE_VIDEO; |
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| 217 | |
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| 218 | // put sample parameters |
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| 219 | codec_context->bit_rate = 400000; |
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| 220 | // resolution must be a multiple of two |
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| 221 | codec_context->width = State::getResX(); |
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| 222 | codec_context->height = State::getResY(); |
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| 223 | |
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| 224 | this->width = codec_context->width; |
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| 225 | this->height = codec_context->height; |
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| 226 | |
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| 227 | // time base: this is the fundamental unit of time (in seconds) in terms |
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| 228 | // of which frame timestamps are represented. for fixed-fps content, |
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| 229 | // timebase should be 1/framerate and timestamp increments should be |
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| 230 | // identically 1 |
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[6681] | 231 | codec_context->time_base.den = (int)stream_frame_rate; |
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[6663] | 232 | codec_context->time_base.num = 1; |
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| 233 | codec_context->gop_size = 12; // emit one intra frame every twelve frames at most |
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[6681] | 234 | codec_context->pix_fmt = PIX_FMT_YUV420P; |
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[6663] | 235 | |
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| 236 | if (codec_context->codec_id == CODEC_ID_MPEG1VIDEO) |
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| 237 | // needed to avoid using macroblocks in which some coeffs overflow |
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| 238 | // this doesnt happen with normal video, it just happens here as the |
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| 239 | // motion of the chroma plane doesnt match the luma plane |
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| 240 | codec_context->mb_decision=2; |
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| 241 | |
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| 242 | // some formats want stream headers to be seperate |
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| 243 | if(!strcmp(format_context->oformat->name, "mp4") || |
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| 244 | !strcmp(format_context->oformat->name, "mov") || |
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| 245 | !strcmp(format_context->oformat->name, "3gp")) |
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| 246 | format_context->flags |= CODEC_FLAG_GLOBAL_HEADER; |
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| 247 | } |
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| 248 | |
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| 249 | |
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| 250 | void Recorder::tick(float dt) |
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| 251 | { |
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| 252 | time += dt; |
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[6681] | 253 | if(time < 1/stream_frame_rate) |
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[6663] | 254 | return; |
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| 255 | else |
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| 256 | time = 0; |
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| 257 | |
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| 258 | // compute current video time |
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| 259 | if (video_stream) |
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| 260 | video_pts = (double)video_stream->pts.val * video_stream->time_base.num / video_stream->time_base.den; |
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| 261 | else |
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| 262 | video_pts = 0.0; |
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| 263 | |
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[6681] | 264 | if (!video_stream || video_pts >= stream_duration) |
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[6663] | 265 | { |
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| 266 | this->toList(OM_DEAD); |
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| 267 | this->closeVideo(); |
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| 268 | } |
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| 269 | else |
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| 270 | // write video frame |
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| 271 | this->writeVideoFrame(); |
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| 272 | } |
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| 273 | |
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| 274 | void Recorder::writeVideoFrame() |
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| 275 | { |
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| 276 | int out_size, err; |
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| 277 | |
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| 278 | codec_context = video_stream->codec; |
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| 279 | |
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[6681] | 280 | if(frame_count >= stream_nb_frames) |
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[6663] | 281 | { |
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| 282 | /* no more frame to compress. The codec has a latency of a few |
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| 283 | frames if using B frames, so we get the last frames by |
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| 284 | passing the same picture again */ |
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| 285 | } |
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| 286 | else |
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| 287 | this->fillYuvImage(); |
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| 288 | |
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| 289 | |
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| 290 | if(format_context->oformat->flags & AVFMT_RAWPICTURE) |
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| 291 | { |
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| 292 | // raw video case. The API will change slightly in the near |
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| 293 | // futur for that |
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| 294 | av_init_packet(&packet); |
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| 295 | |
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| 296 | packet.flags |= PKT_FLAG_KEY; |
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| 297 | packet.stream_index= video_stream->index; |
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| 298 | packet.data= (uint8_t *)picture; |
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| 299 | packet.size= sizeof(AVPicture); |
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| 300 | |
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| 301 | err = av_write_frame(format_context, &packet); |
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| 302 | } |
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| 303 | else |
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| 304 | { |
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| 305 | // encode the image |
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| 306 | out_size = avcodec_encode_video(codec_context, buffer, buffer_size, picture); |
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| 307 | // if zero size, it means the image was buffered |
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| 308 | if (out_size > 0) |
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| 309 | { |
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| 310 | av_init_packet(&packet); |
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| 311 | |
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| 312 | packet.pts= av_rescale_q(codec_context->coded_frame->pts, codec_context->time_base, video_stream->time_base); |
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| 313 | if(codec_context->coded_frame->key_frame) |
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| 314 | packet.flags |= PKT_FLAG_KEY; |
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| 315 | packet.stream_index = video_stream->index; |
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| 316 | packet.data= buffer; |
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| 317 | packet.size= out_size; |
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| 318 | |
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| 319 | // write the compressed frame in the media file |
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| 320 | err = av_write_frame(format_context, &packet); |
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| 321 | } |
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| 322 | else |
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| 323 | err = 0; |
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| 324 | } |
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| 325 | |
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| 326 | if(err != 0) |
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| 327 | PRINTF(1)("Error while writing video frame\n"); |
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| 328 | |
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| 329 | frame_count++; |
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| 330 | } |
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| 331 | |
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| 332 | |
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| 333 | void Recorder::fillYuvImage() |
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| 334 | { |
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| 335 | unsigned char *outputImage = 0; |
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| 336 | |
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| 337 | // Allocate the neccessary memory. |
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| 338 | outputImage = (unsigned char*)malloc(width * height * 3); |
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| 339 | |
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| 340 | // Clear the variable. |
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| 341 | memset(outputImage, 0, width * height * 3); |
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| 342 | |
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| 343 | // You use the glReadPixels() to read every pixel on the screen |
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| 344 | // that you specify. You must use one less than each size. |
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| 345 | glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, outputImage); |
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| 346 | |
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[6681] | 347 | int i = 0; |
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| 348 | for(int y=height-1;y>=0;y--) |
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[6663] | 349 | { |
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[6681] | 350 | for(int x=0;x<width*3;x++) |
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[6663] | 351 | { |
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[6681] | 352 | RGB_frame->data[0][y*width*3+x] = outputImage[i]; |
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| 353 | i++; |
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[6663] | 354 | } |
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| 355 | } |
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| 356 | |
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| 357 | |
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[6681] | 358 | img_convert((AVPicture*)picture, PIX_FMT_YUV420P, (AVPicture*)RGB_frame, |
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| 359 | PIX_FMT_RGB24, width, height); |
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[6663] | 360 | |
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| 361 | // Clear the allocated memory. |
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| 362 | free(outputImage); |
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| 363 | } |
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| 364 | |
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| 365 | |
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| 366 | void Recorder::draw() const |
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| 367 | { |
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| 368 | } |
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