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3 <title>Camera grab convert to MPEG: grab_mpeg.c Source File</title>
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20 <h1>grab_mpeg.c</h1><a href="grab__mpeg_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
21 <a name="l00028"></a>00028 <span class="preprocessor">#include <stdlib.h></span>
22 <a name="l00029"></a>00029 <span class="preprocessor">#include <stdio.h></span>
23 <a name="l00030"></a>00030 <span class="preprocessor">#include <string.h></span>
24 <a name="l00031"></a>00031
25 <a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="camv4l_8h.html">camv4l.h</a>"</span>
26 <a name="l00033"></a>00033 <span class="preprocessor">#include <ffmpeg/avcodec.h></span>
27 <a name="l00034"></a>00034
28 <a name="l00035"></a>00035
29 <a name="l00037"></a><a class="code" href="grab__mpeg_8c.html#3d92780da6f5146c4f47f425dd151d96">00037</a> AVCodec *<a class="code" href="grab__mpeg_8c.html#3d92780da6f5146c4f47f425dd151d96">codec</a>;
30 <a name="l00038"></a>00038
31 <a name="l00040"></a><a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">00040</a> AVCodecContext *<a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>;
32 <a name="l00041"></a>00041
33 <a name="l00042"></a><a class="code" href="grab__mpeg_8c.html#cb559820d9ca11295b4500f179ef6392">00042</a> <span class="keywordtype">int</span> <a class="code" href="grab__mpeg_8c.html#cb559820d9ca11295b4500f179ef6392">i</a>;
34 <a name="l00043"></a><a class="code" href="grab__mpeg_8c.html#6b2e93f2f2db9a65b19a2487c6b1f78b">00043</a> <span class="keywordtype">int</span> <a class="code" href="grab__mpeg_8c.html#6b2e93f2f2db9a65b19a2487c6b1f78b">out_size</a>;
35 <a name="l00044"></a><a class="code" href="grab__mpeg_8c.html#439227feff9d7f55384e8780cfc2eb82">00044</a> <span class="keywordtype">int</span> <a class="code" href="grab__mpeg_8c.html#439227feff9d7f55384e8780cfc2eb82">size</a>;
36 <a name="l00045"></a>00045
37 <a name="l00047"></a><a class="code" href="grab__mpeg_8c.html#3efb0e1a16208deecbd84c15401f7cf8">00047</a> FILE *<a class="code" href="grab__mpeg_8c.html#3efb0e1a16208deecbd84c15401f7cf8">f</a>;
38 <a name="l00048"></a>00048
39 <a name="l00050"></a><a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">00050</a> AVFrame *<a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>;
40 <a name="l00051"></a>00051
41 <a name="l00053"></a><a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">00053</a> uint8_t *<a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>;<span class="comment">// *picture_buf;</span>
42 <a name="l00054"></a>00054 <span class="comment">//Size of output </span>
43 <a name="l00055"></a><a class="code" href="grab__mpeg_8c.html#7143b1416521b958e981da0f56586e8e">00055</a> <span class="keywordtype">int</span> <a class="code" href="grab__mpeg_8c.html#7143b1416521b958e981da0f56586e8e">outbuf_size</a>;
44 <a name="l00056"></a>00056
45 <a name="l00057"></a>00057
46 <a name="l00059"></a><a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">00059</a> <span class="keyword">struct </span><a class="code" href="structvdIn.html">vdIn</a> <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>;
47 <a name="l00060"></a>00060
48 <a name="l00064"></a>00064 <span class="keywordtype">void</span> <a class="code" href="grab__mpeg_8c.html#28603e93ac81b15f759127bbfdc7cb37">processvideo</a> ();
49 <a name="l00065"></a>00065
50 <a name="l00069"></a>00069 <span class="keywordtype">void</span> <a class="code" href="grab__mpeg_8c.html#dedd16f8b46d848fe3ef6179dd54956c">video_encode_alloc</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename,uint8_t* in_buffer);
51 <a name="l00070"></a>00070
52 <a name="l00074"></a>00074 <span class="keywordtype">void</span> <a class="code" href="grab__mpeg_8c.html#aadbb0611fc321cf111d581db0ff62e4">video_encode_mpeg</a>();
53 <a name="l00075"></a>00075
54 <a name="l00079"></a>00079 <span class="keywordtype">void</span> <a class="code" href="grab__mpeg_8c.html#074665588885b7b51505b9331ba690e9">video_encode_free</a>();
55 <a name="l00080"></a>00080
56 <a name="l00081"></a>00081
57 <a name="l00088"></a><a class="code" href="grab__mpeg_8c.html#99ed24fde392ba5e0c427c04cd8ad429">00088</a> <span class="keywordtype">int</span> <a class="code" href="grab__mpeg_8c.html#99ed24fde392ba5e0c427c04cd8ad429">main</a>(<span class="keywordtype">int</span> count, <span class="keywordtype">char</span> *strings[])
58 <a name="l00089"></a>00089 {
59 <a name="l00090"></a>00090 <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>= NULL;
60 <a name="l00091"></a>00091 <span class="keywordtype">int</span> retval;
61 <a name="l00092"></a>00092 <span class="comment">//int cnt=10;</span>
62 <a name="l00093"></a>00093
63 <a name="l00094"></a>00094 <span class="comment">//prevziti parametru z prikazove radky</span>
64 <a name="l00095"></a>00095 <span class="comment">/*if ( count != 2 ){//kontrola zda jsme zadali port</span>
65 <a name="l00096"></a>00096 <span class="comment"> printf("usage: %s <port>\n...Using default port (%d).\n", strings[0], port);</span>
66 <a name="l00097"></a>00097 <span class="comment"> }</span>
67 <a name="l00098"></a>00098 <span class="comment"> else {</span>
68 <a name="l00099"></a>00099 <span class="comment"> port = atoi(strings[1]); //prevod z parametru</span>
69 <a name="l00100"></a>00100 <span class="comment"> }*/</span>
70 <a name="l00101"></a>00101
71 <a name="l00102"></a>00102 <span class="keyword">const</span> <span class="keywordtype">char</span> *videodev =<span class="stringliteral">"/dev/video0"</span>;
72 <a name="l00103"></a>00103 <span class="keyword">const</span> <span class="keywordtype">char</span> *filename = <span class="stringliteral">"pokus.mpg"</span>;
73 <a name="l00104"></a>00104 <span class="keywordtype">int</span> grabmethod = 1; <span class="comment">//or 0</span>
74 <a name="l00105"></a>00105
75 <a name="l00106"></a>00106 <span class="comment">/* make room for init data */</span>
76 <a name="l00107"></a>00107 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#a5bc365f449fae0bacc9ef7e813dfcdd">videodevice</a> = NULL;
77 <a name="l00108"></a>00108 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#676d43607601940f318ee3b274e4716b">cameraname</a> = NULL;
78 <a name="l00109"></a>00109 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#4dcb789ec776b466e9e0ee388686e3b6">bridge</a> = NULL;
79 <a name="l00110"></a>00110 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#a5bc365f449fae0bacc9ef7e813dfcdd">videodevice</a> = (<span class="keywordtype">char</span> *) realloc (<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#a5bc365f449fae0bacc9ef7e813dfcdd">videodevice</a>, 16);
80 <a name="l00111"></a>00111 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#676d43607601940f318ee3b274e4716b">cameraname</a> = (<span class="keywordtype">char</span> *) realloc (<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#676d43607601940f318ee3b274e4716b">cameraname</a>, 32);
81 <a name="l00112"></a>00112 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#4dcb789ec776b466e9e0ee388686e3b6">bridge</a> = (<span class="keywordtype">char</span> *) realloc (<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#4dcb789ec776b466e9e0ee388686e3b6">bridge</a>, 9);
82 <a name="l00113"></a>00113 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#faaf5caccac448b15a6f350cd02756b3">grabMethod</a> = grabmethod; <span class="comment">// 1 mmap 0 read</span>
83 <a name="l00114"></a>00114 snprintf (<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#a5bc365f449fae0bacc9ef7e813dfcdd">videodevice</a>, 12, <span class="stringliteral">"%s"</span>, videodev);
84 <a name="l00115"></a>00115 printf (<span class="stringliteral">"video device %s\n"</span>, <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#a5bc365f449fae0bacc9ef7e813dfcdd">videodevice</a>);
85 <a name="l00116"></a>00116 retval=<a class="code" href="group__common.html#gdc0c206abad8d7210c57022190f93dc4">init_v4l</a> (&<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>);
86 <a name="l00117"></a>00117 printf(<span class="stringliteral">"Device was been initialized %d \n"</span>,retval);
87 <a name="l00118"></a>00118
88 <a name="l00119"></a>00119 <a class="code" href="grab__mpeg_8c.html#dedd16f8b46d848fe3ef6179dd54956c">video_encode_alloc</a>(filename,<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#ab1c2508d67a5ad1ec88bf69b0a41fb7">pixTmp</a>);
89 <a name="l00120"></a>00120
90 <a name="l00121"></a>00121 <a class="code" href="grab__mpeg_8c.html#28603e93ac81b15f759127bbfdc7cb37">processvideo</a>();
91 <a name="l00122"></a>00122
92 <a name="l00123"></a>00123 <a class="code" href="grab__mpeg_8c.html#074665588885b7b51505b9331ba690e9">video_encode_free</a>();
93 <a name="l00124"></a>00124
94 <a name="l00125"></a>00125 free (<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#a5bc365f449fae0bacc9ef7e813dfcdd">videodevice</a>);
95 <a name="l00126"></a>00126 free (<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#676d43607601940f318ee3b274e4716b">cameraname</a>);
96 <a name="l00127"></a>00127 free (<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#4dcb789ec776b466e9e0ee388686e3b6">bridge</a>);
97 <a name="l00128"></a>00128 <a class="code" href="group__common.html#ga7b6cf1c3b04b4758f8c256879c96672">close_v4l</a> (&<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>);
98 <a name="l00129"></a>00129
99 <a name="l00130"></a>00130 printf(<span class="stringliteral">"Zavreni \n"</span>);
100 <a name="l00131"></a>00131
101 <a name="l00132"></a>00132 <span class="keywordflow">return</span> 1;
102 <a name="l00133"></a>00133 }
103 <a name="l00134"></a>00134
104 <a name="l00135"></a>00135
105 <a name="l00136"></a>00136
106 <a name="l00137"></a><a class="code" href="grab__mpeg_8c.html#28603e93ac81b15f759127bbfdc7cb37">00137</a> <span class="keywordtype">void</span> <a class="code" href="grab__mpeg_8c.html#28603e93ac81b15f759127bbfdc7cb37">processvideo</a> ()
107 <a name="l00138"></a>00138 {
108 <a name="l00139"></a>00139 <span class="keywordtype">int</span> run = 1;
109 <a name="l00140"></a>00140 <span class="keywordtype">int</span> cnt=0;
110 <a name="l00141"></a>00141
111 <a name="l00142"></a>00142 <span class="comment">//set size of video</span>
112 <a name="l00143"></a>00143 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#21a92e9c30017da96ee881bef3469f18">hdrwidth</a> = 384;
113 <a name="l00144"></a>00144 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#2de78c4cff91808eb64ccab86e8d56b9">hdrheight</a> = 288;
114 <a name="l00145"></a>00145 <a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>.<a class="code" href="structvdIn.html#da1a8b7c0f40c9d997f8e8fddd4bc27d">formatIn</a> = <a class="code" href="camv4l_8h.html#dea1e94780da3ba61a1a1d9a11affdd2">VIDEO_PALETTE_YUV420P</a>;
115 <a name="l00146"></a>00146 <span class="comment">/* input data maybe a jpeg one */</span>
116 <a name="l00147"></a>00147 <a class="code" href="group__common.html#g4f1b347f61daa1e55c12a2a3ebb22ee3">setPalette</a> (&<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>);
117 <a name="l00148"></a>00148
118 <a name="l00149"></a>00149 <span class="keywordflow">while</span> (run){
119 <a name="l00150"></a>00150 <a class="code" href="group__common.html#g2b042146ea433ba800a754e3d056a86d">grab</a> (&<a class="code" href="grab__mpeg_8c.html#d282c1ee4754687cc4e30bce27cedf8f">myvidIn</a>);
120 <a name="l00151"></a>00151
121 <a name="l00152"></a>00152 <span class="keywordflow">if</span>(cnt>3)
122 <a name="l00153"></a>00153 <a class="code" href="grab__mpeg_8c.html#aadbb0611fc321cf111d581db0ff62e4">video_encode_mpeg</a>();
123 <a name="l00154"></a>00154
124 <a name="l00155"></a>00155 <span class="comment">//sleep(1);</span>
125 <a name="l00156"></a>00156 cnt++;
126 <a name="l00157"></a>00157 <span class="keywordflow">if</span>(cnt==50){run=0;}
127 <a name="l00158"></a>00158 printf(<span class="stringliteral">"Frame %d\n"</span>,cnt);
128 <a name="l00159"></a>00159 }
129 <a name="l00160"></a>00160 }
130 <a name="l00161"></a>00161
131 <a name="l00162"></a><a class="code" href="grab__mpeg_8c.html#dedd16f8b46d848fe3ef6179dd54956c">00162</a> <span class="keywordtype">void</span> <a class="code" href="grab__mpeg_8c.html#dedd16f8b46d848fe3ef6179dd54956c">video_encode_alloc</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename,uint8_t* in_buffer){
132 <a name="l00163"></a>00163
133 <a name="l00164"></a>00164 <span class="comment">/* must be called before using avcodec lib */</span>
134 <a name="l00165"></a>00165 avcodec_init();
135 <a name="l00166"></a>00166
136 <a name="l00167"></a>00167 <span class="comment">/* register all the codecs */</span>
137 <a name="l00168"></a>00168 avcodec_register_all();
138 <a name="l00169"></a>00169
139 <a name="l00170"></a>00170 <span class="comment">//printf("Video encoding\n");</span>
140 <a name="l00171"></a>00171 <span class="comment">/* find the mpeg1 video encoder */</span>
141 <a name="l00172"></a>00172 <a class="code" href="grab__mpeg_8c.html#3d92780da6f5146c4f47f425dd151d96">codec</a> = avcodec_find_encoder(CODEC_ID_MPEG1VIDEO);
142 <a name="l00173"></a>00173 <span class="keywordflow">if</span> (!<a class="code" href="grab__mpeg_8c.html#3d92780da6f5146c4f47f425dd151d96">codec</a>) {
143 <a name="l00174"></a>00174 fprintf(stderr, <span class="stringliteral">"codec not found\n"</span>);
144 <a name="l00175"></a>00175 exit(1);
145 <a name="l00176"></a>00176 }
146 <a name="l00177"></a>00177
147 <a name="l00178"></a>00178 <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>= avcodec_alloc_context();
148 <a name="l00179"></a>00179 <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>= avcodec_alloc_frame();
149 <a name="l00180"></a>00180 <span class="comment">/* put sample parameters */</span>
150 <a name="l00181"></a>00181 <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->bit_rate = 1000000;
151 <a name="l00182"></a>00182 <span class="comment">/* resolution must be a multiple of two */</span>
152 <a name="l00183"></a>00183 <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->width = 384;
153 <a name="l00184"></a>00184 <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->height = 288;
154 <a name="l00185"></a>00185 <span class="comment">/* frames per second */</span>
155 <a name="l00186"></a>00186 <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->time_base= (AVRational){1,25};
156 <a name="l00187"></a>00187 <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->gop_size = 10; <span class="comment">/* emit one intra frame every ten frames */</span>
157 <a name="l00188"></a>00188 <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->max_b_frames=1;
158 <a name="l00189"></a>00189 <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->pix_fmt = PIX_FMT_YUV420P;
159 <a name="l00190"></a>00190
160 <a name="l00191"></a>00191 <span class="comment">/* open codec */</span>
161 <a name="l00192"></a>00192 <span class="keywordflow">if</span> (avcodec_open(<a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>, <a class="code" href="grab__mpeg_8c.html#3d92780da6f5146c4f47f425dd151d96">codec</a>) < 0) {
162 <a name="l00193"></a>00193 fprintf(stderr, <span class="stringliteral">"could not open codec\n"</span>);
163 <a name="l00194"></a>00194 exit(1);
164 <a name="l00195"></a>00195 }
165 <a name="l00196"></a>00196
166 <a name="l00197"></a>00197 <a class="code" href="grab__mpeg_8c.html#3efb0e1a16208deecbd84c15401f7cf8">f</a> = fopen(filename, <span class="stringliteral">"wb"</span>);
167 <a name="l00198"></a>00198 <span class="keywordflow">if</span> (!<a class="code" href="grab__mpeg_8c.html#3efb0e1a16208deecbd84c15401f7cf8">f</a>) {
168 <a name="l00199"></a>00199 fprintf(stderr, <span class="stringliteral">"could not open %s\n"</span>, filename);
169 <a name="l00200"></a>00200 exit(1);
170 <a name="l00201"></a>00201 }
171 <a name="l00202"></a>00202
172 <a name="l00203"></a>00203 <span class="comment">/* alloc image and output buffer */</span>
173 <a name="l00204"></a>00204 <span class="comment">//buffer pro zakodovany obrazek mpegem</span>
174 <a name="l00205"></a>00205 <a class="code" href="grab__mpeg_8c.html#7143b1416521b958e981da0f56586e8e">outbuf_size</a> = 100000;
175 <a name="l00206"></a>00206 <a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a> = malloc(<a class="code" href="grab__mpeg_8c.html#7143b1416521b958e981da0f56586e8e">outbuf_size</a>);
176 <a name="l00207"></a>00207
177 <a name="l00208"></a>00208 <a class="code" href="grab__mpeg_8c.html#439227feff9d7f55384e8780cfc2eb82">size</a> = <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->width * <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->height;
178 <a name="l00209"></a>00209
179 <a name="l00210"></a>00210 <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>->data[0] = in_buffer;
180 <a name="l00211"></a>00211 <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>->data[1] = <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>->data[0] + <a class="code" href="grab__mpeg_8c.html#439227feff9d7f55384e8780cfc2eb82">size</a>;
181 <a name="l00212"></a>00212 <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>->data[2] = <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>->data[1] + <a class="code" href="grab__mpeg_8c.html#439227feff9d7f55384e8780cfc2eb82">size</a> / 4;
182 <a name="l00213"></a>00213 <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>->linesize[0] = <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->width;
183 <a name="l00214"></a>00214 <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>->linesize[1] = <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->width / 2;
184 <a name="l00215"></a>00215 <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>->linesize[2] = <a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>->width / 2;
185 <a name="l00216"></a>00216 }
186 <a name="l00217"></a>00217
187 <a name="l00218"></a><a class="code" href="grab__mpeg_8c.html#aadbb0611fc321cf111d581db0ff62e4">00218</a> <span class="keywordtype">void</span> <a class="code" href="grab__mpeg_8c.html#aadbb0611fc321cf111d581db0ff62e4">video_encode_mpeg</a>(){
188 <a name="l00219"></a>00219
189 <a name="l00220"></a>00220 <span class="comment">/* encode the image */</span>
190 <a name="l00221"></a>00221 <a class="code" href="grab__mpeg_8c.html#6b2e93f2f2db9a65b19a2487c6b1f78b">out_size</a> = avcodec_encode_video(<a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>, <a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>, <a class="code" href="grab__mpeg_8c.html#7143b1416521b958e981da0f56586e8e">outbuf_size</a>, <a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>);
191 <a name="l00222"></a>00222 <span class="comment">//printf("encoding frame %3d (size=%5d)\n", i, out_size);</span>
192 <a name="l00223"></a>00223 fwrite(<a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>, 1, <a class="code" href="grab__mpeg_8c.html#6b2e93f2f2db9a65b19a2487c6b1f78b">out_size</a>, <a class="code" href="grab__mpeg_8c.html#3efb0e1a16208deecbd84c15401f7cf8">f</a>);
193 <a name="l00224"></a>00224 }
194 <a name="l00225"></a>00225
195 <a name="l00226"></a>00226
196 <a name="l00227"></a><a class="code" href="grab__mpeg_8c.html#074665588885b7b51505b9331ba690e9">00227</a> <span class="keywordtype">void</span> <a class="code" href="grab__mpeg_8c.html#074665588885b7b51505b9331ba690e9">video_encode_free</a>(){
197 <a name="l00228"></a>00228
198 <a name="l00229"></a>00229 <span class="comment">/* get the delayed frames */</span>
199 <a name="l00230"></a>00230 <span class="keywordflow">for</span>(; <a class="code" href="grab__mpeg_8c.html#6b2e93f2f2db9a65b19a2487c6b1f78b">out_size</a>; <a class="code" href="grab__mpeg_8c.html#cb559820d9ca11295b4500f179ef6392">i</a>++) {
200 <a name="l00231"></a>00231 fflush(stdout);
201 <a name="l00232"></a>00232 <a class="code" href="grab__mpeg_8c.html#6b2e93f2f2db9a65b19a2487c6b1f78b">out_size</a> = avcodec_encode_video(<a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>, <a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>, <a class="code" href="grab__mpeg_8c.html#7143b1416521b958e981da0f56586e8e">outbuf_size</a>, NULL);
202 <a name="l00233"></a>00233 printf(<span class="stringliteral">"write frame %3d (size=%5d)\n"</span>, <a class="code" href="grab__mpeg_8c.html#cb559820d9ca11295b4500f179ef6392">i</a>, <a class="code" href="grab__mpeg_8c.html#6b2e93f2f2db9a65b19a2487c6b1f78b">out_size</a>);
203 <a name="l00234"></a>00234 fwrite(<a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>, 1, <a class="code" href="grab__mpeg_8c.html#6b2e93f2f2db9a65b19a2487c6b1f78b">out_size</a>, <a class="code" href="grab__mpeg_8c.html#3efb0e1a16208deecbd84c15401f7cf8">f</a>);
204 <a name="l00235"></a>00235 }
205 <a name="l00236"></a>00236
206 <a name="l00237"></a>00237 <span class="comment">/* add sequence end code to have a real mpeg file */</span>
207 <a name="l00238"></a>00238 <a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>[0] = 0x00;
208 <a name="l00239"></a>00239 <a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>[1] = 0x00;
209 <a name="l00240"></a>00240 <a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>[2] = 0x01;
210 <a name="l00241"></a>00241 <a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>[3] = 0xb7;
211 <a name="l00242"></a>00242
212 <a name="l00243"></a>00243 fwrite(<a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>, 1, 4, <a class="code" href="grab__mpeg_8c.html#3efb0e1a16208deecbd84c15401f7cf8">f</a>);
213 <a name="l00244"></a>00244
214 <a name="l00245"></a>00245 fclose(<a class="code" href="grab__mpeg_8c.html#3efb0e1a16208deecbd84c15401f7cf8">f</a>);
215 <a name="l00246"></a>00246 <span class="comment">//free(picture_buf);</span>
216 <a name="l00247"></a>00247 free(<a class="code" href="grab__mpeg_8c.html#a85f3649904a9e7c4d21c42f95a2eac8">outbuf</a>);
217 <a name="l00248"></a>00248
218 <a name="l00249"></a>00249 avcodec_close(<a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>);
219 <a name="l00250"></a>00250 av_free(<a class="code" href="grab__mpeg_8c.html#e7991e0075301e249fa7d40d5b0eec81">c</a>);
220 <a name="l00251"></a>00251 av_free(<a class="code" href="grab__mpeg_8c.html#65f6cfcea30372e03b387bd67c2f8a8d">picture</a>);
221 <a name="l00252"></a>00252 printf(<span class="stringliteral">"\n"</span>);
222 <a name="l00253"></a>00253 printf(<span class="stringliteral">"video codev was been freed\n"</span>);
223 <a name="l00254"></a>00254 }
224 </pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Jan 26 20:51:50 2009 for Camera grab convert to MPEG by
225 <a href="http://www.doxygen.org/index.html">
226 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1 </small></address>
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