write_audio.c.htm

光驱cdrom读写源代码,scsi命令解析

<a class="l" name="52">     52 </a>		}
<a class="l" name="53">     53 </a>		<b>if</b> ((<a href="/source/s?defs=ext">ext</a> == <a href="/source/s?defs=NULL">NULL</a>) || ((<a href="/source/s?defs=at">at</a> = <a href="/source/s?defs=get_audio_type">get_audio_type</a>(<a href="/source/s?defs=ext">ext</a>)) == -<span class="n">1</span>)) {
<a class="l" name="54">     54 </a>			<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(
<a class="l" name="55">     55 </a>			    <span class="s">"Cannot understand file extension for %s\n"</span>),
<a class="l" name="56">     56 </a>			    <a href="/source/s?defs=fname">fname</a>);
<a class="l" name="57">     57 </a>			<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="58">     58 </a>		}
<a class="l" name="59">     59 </a>	} <b>else</b> {
<a class="hl" name="60">     60 </a>		<a href="/source/s?defs=at">at</a> = <a href="/source/s?defs=audio_type">audio_type</a>;
<a class="l" name="61">     61 </a>	}
<a class="l" name="62">     62 </a>	<b>if</b> (<a href="/source/s?defs=at">at</a> == <a href="/source/s?defs=AUDIO_TYPE_SUN">AUDIO_TYPE_SUN</a>)
<a class="l" name="63">     63 </a>		<b>return</b> (<a href="/source/s?defs=open_au_read_stream">open_au_read_stream</a>(<a href="/source/s?defs=fname">fname</a>));
<a class="l" name="64">     64 </a>	<b>if</b> (<a href="/source/s?defs=at">at</a> == <a href="/source/s?defs=AUDIO_TYPE_WAV">AUDIO_TYPE_WAV</a>)
<a class="l" name="65">     65 </a>		<b>return</b> (<a href="/source/s?defs=open_wav_read_stream">open_wav_read_stream</a>(<a href="/source/s?defs=fname">fname</a>));
<a class="l" name="66">     66 </a>	<b>if</b> (<a href="/source/s?defs=at">at</a> == <a href="/source/s?defs=AUDIO_TYPE_CDA">AUDIO_TYPE_CDA</a>)
<a class="l" name="67">     67 </a>		<b>return</b> (<a href="/source/s?defs=open_file_read_stream">open_file_read_stream</a>(<a href="/source/s?defs=fname">fname</a>));
<a class="l" name="68">     68 </a>	<b>if</b> (<a href="/source/s?defs=at">at</a> == <a href="/source/s?defs=AUDIO_TYPE_AUR">AUDIO_TYPE_AUR</a>)
<a class="l" name="69">     69 </a>		<b>return</b> (<a href="/source/s?defs=open_aur_read_stream">open_aur_read_stream</a>(<a href="/source/s?defs=fname">fname</a>));
<a class="hl" name="70">     70 </a>	<b>return</b> (<a href="/source/s?defs=NULL">NULL</a>);
<a class="l" name="71">     71 </a>}
<a class="l" name="72">     72 </a>
<a class="l" name="73">     73 </a><b>void</b>
<a class="l" name="74">     74 </a><a href="/source/s?defs=write_audio">write_audio</a>(<b>char</b> **<a href="/source/s?defs=argv">argv</a>, <b>int</b> <a href="/source/s?defs=start_argc">start_argc</a>, <b>int</b> <a href="/source/s?defs=argc">argc</a>)
<a class="l" name="75">     75 </a>{
<a class="l" name="76">     76 </a>	<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> *<a href="/source/s?defs=h_ptr">h_ptr</a>;
<a class="l" name="77">     77 </a>	<b>int</b> i, <a href="/source/s?defs=nfiles">nfiles</a>;
<a class="l" name="78">     78 </a>	<b>struct</b> <a href="/source/s?defs=track_info">track_info</a> *<a href="/source/s?defs=ti">ti</a>;
<a class="l" name="79">     79 </a>	<a href="/source/s?defs=uint32_t">uint32_t</a> <a href="/source/s?defs=blks_req">blks_req</a>, <a href="/source/s?defs=blks_avail">blks_avail</a>;
<a class="hl" name="80">     80 </a>	<a href="/source/s?defs=off_t">off_t</a> <a href="/source/s?defs=fsize">fsize</a>;
<a class="l" name="81">     81 </a>
<a class="l" name="82">     82 </a>	<span class="c">/* number of tracks to write */</span>
<a class="l" name="83">     83 </a>	<a href="/source/s?defs=nfiles">nfiles</a> = <a href="/source/s?defs=argc">argc</a> - <a href="/source/s?defs=start_argc">start_argc</a>;
<a class="l" name="84">     84 </a>	<a href="/source/s?defs=h_ptr">h_ptr</a> = (<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> *)<a href="/source/s?defs=my_zalloc">my_zalloc</a>(<a href="/source/s?defs=nfiles">nfiles</a> * <b>sizeof</b> (<a href="/source/s?defs=bstreamhandle">bstreamhandle</a>));
<a class="l" name="85">     85 </a>	<a href="/source/s?defs=blks_req">blks_req</a> = <span class="n">0</span>;
<a class="l" name="86">     86 </a>	<b>for</b> (i = <span class="n">0</span>; i &lt; <a href="/source/s?defs=nfiles">nfiles</a>; i++) {
<a class="l" name="87">     87 </a>		<a href="/source/s?defs=h_ptr">h_ptr</a>[i] = <a href="/source/s?defs=open_audio">open_audio</a>(<a href="/source/s?defs=argv">argv</a>[<a href="/source/s?defs=start_argc">start_argc</a> + i]);
<a class="l" name="88">     88 </a>		<b>if</b> (<a href="/source/s?defs=h_ptr">h_ptr</a>[i] == <a href="/source/s?defs=NULL">NULL</a>) {
<a class="l" name="89">     89 </a>			<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Cannot open %s: %s\n"</span>),
<a class="hl" name="90">     90 </a>			    <a href="/source/s?defs=argv">argv</a>[<a href="/source/s?defs=start_argc">start_argc</a> + i], <a href="/source/s?defs=get_err_str">get_err_str</a>());
<a class="l" name="91">     91 </a>			<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="92">     92 </a>		}
<a class="l" name="93">     93 </a>		(<b>void</b>) (<a href="/source/s?defs=h_ptr">h_ptr</a>[i])-&gt;<a href="/source/s?defs=bstr_size">bstr_size</a>(<a href="/source/s?defs=h_ptr">h_ptr</a>[i], &amp;<a href="/source/s?defs=fsize">fsize</a>);
<a class="l" name="94">     94 </a>
<a class="l" name="95">     95 </a>		<span class="c">/* 2352 bytes per block, 75 blocks per second */</span>
<a class="l" name="96">     96 </a>		<a href="/source/s?defs=blks_req">blks_req</a> += <span class="n">150</span> + <a href="/source/s?defs=fsize">fsize</a>/<span class="n">2352</span>; <span class="c">/* 2 sec gap per track */</span>
<a class="l" name="97">     97 </a>		<b>if</b> (<a href="/source/s?defs=fsize">fsize</a> % <span class="n">2352</span>)
<a class="l" name="98">     98 </a>			<a href="/source/s?defs=blks_req">blks_req</a>++;
<a class="l" name="99">     99 </a>	}
<a class="hl" name="100">    100 </a>	(<b>void</b>) <a href="/source/s?defs=check_device">check_device</a>(<a href="/source/s?defs=target">target</a>, <a href="/source/s?defs=CHECK_DEVICE_NOT_READY">CHECK_DEVICE_NOT_READY</a> |
<a class="l" name="101">    101 </a>	    <a href="/source/s?defs=CHECK_DEVICE_NOT_WRITABLE">CHECK_DEVICE_NOT_WRITABLE</a> | <a href="/source/s?defs=CHECK_MEDIA_IS_NOT_WRITABLE">CHECK_MEDIA_IS_NOT_WRITABLE</a> |
<a class="l" name="102">    102 </a>	    <a href="/source/s?defs=EXIT_IF_CHECK_FAILED">EXIT_IF_CHECK_FAILED</a>);
<a class="l" name="103">    103 </a>
<a class="l" name="104">    104 </a>	<span class="c">/* Put the device in track-at-once mode */</span>
<a class="l" name="105">    105 </a>	<a href="/source/s?defs=write_init">write_init</a>(<a href="/source/s?defs=TRACK_MODE_AUDIO">TRACK_MODE_AUDIO</a>);
<a class="l" name="106">    106 </a>	<a href="/source/s?defs=ti">ti</a> = (<b>struct</b> <a href="/source/s?defs=track_info">track_info</a> *)<a href="/source/s?defs=my_zalloc">my_zalloc</a>(<b>sizeof</b> (*<a href="/source/s?defs=ti">ti</a>));
<a class="l" name="107">    107 </a>
<a class="l" name="108">    108 </a>	<span class="c">/* Build information for next invisible track, -1 */</span>
<a class="l" name="109">    109 </a>	<b>if</b> ((<a href="/source/s?defs=build_track_info">build_track_info</a>(<a href="/source/s?defs=target">target</a>, -<span class="n">1</span>, <a href="/source/s?defs=ti">ti</a>) == <span class="n">0</span>) ||
<a class="hl" name="110">    110 </a>	    ((<a href="/source/s?defs=ti">ti</a>-&gt;<a href="/source/s?defs=ti_flags">ti_flags</a> &amp; <a href="/source/s?defs=TI_NWA_VALID">TI_NWA_VALID</a>) == <span class="n">0</span>)) {
<a class="l" name="111">    111 </a>		<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(
<a class="l" name="112">    112 </a>		    <span class="s">"Cannot get writable address for the media.\n"</span>));
<a class="l" name="113">    113 </a>		<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="114">    114 </a>	}
<a class="l" name="115">    115 </a>	<b>if</b> ((<a href="/source/s?defs=blks_avail">blks_avail</a> = <a href="/source/s?defs=get_last_possible_lba">get_last_possible_lba</a>(<a href="/source/s?defs=target">target</a>)) == <span class="n">0</span>) {
<a class="l" name="116">    116 </a>		<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Unable to determine media capacity. "</span>
<a class="l" name="117">    117 </a>		    <span class="s">"Defaulting to 650 MB (74 minute) disc.\n"</span>));
<a class="l" name="118">    118 </a>		<a href="/source/s?defs=blks_avail">blks_avail</a> = <a href="/source/s?defs=MAX_CD_BLKS">MAX_CD_BLKS</a>;
<a class="l" name="119">    119 </a>	} <b>else</b> {
<a class="hl" name="120">    120 </a>		<span class="c">/* LBA is always one less */</span>
<a class="l" name="121">    121 </a>		<a href="/source/s?defs=blks_avail">blks_avail</a>++;
<a class="l" name="122">    122 </a>	}
<a class="l" name="123">    123 </a>	<span class="c">/*
<a class="l" name="124">    124 </a>	 * Actual number of blocks available based on nwa (next writable
<a class="l" name="125">    125 </a>	 * address) since there may already be information on the disc.
<a class="l" name="126">    126 </a>	 */</span>
<a class="l" name="127">    127 </a>
<a class="l" name="128">    128 </a>	<a href="/source/s?defs=blks_avail">blks_avail</a> -= <a href="/source/s?defs=ti">ti</a>-&gt;<a href="/source/s?defs=ti_nwa">ti_nwa</a>;
<a class="l" name="129">    129 </a>	<b>if</b> (<a href="/source/s?defs=blks_avail">blks_avail</a> &lt; <a href="/source/s?defs=blks_req">blks_req</a>) {
<a class="hl" name="130">    130 </a>		<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Insufficient space on the media.\n"</span>));
<a class="l" name="131">    131 </a>		<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="132">    132 </a>	}
<a class="l" name="133">    133 </a>	<b>for</b> (i = <span class="n">0</span>; i &lt; <a href="/source/s?defs=nfiles">nfiles</a>; i++) {
<a class="l" name="134">    134 </a>		<a href="/source/s?defs=write_next_track">write_next_track</a>(<a href="/source/s?defs=TRACK_MODE_AUDIO">TRACK_MODE_AUDIO</a>, <a href="/source/s?defs=h_ptr">h_ptr</a>[i]);
<a class="l" name="135">    135 </a>		<b>if</b> (<a href="/source/s?defs=simulation">simulation</a> &amp;&amp; (<a href="/source/s?defs=nfiles">nfiles</a> != <span class="n">1</span>)) {
<a class="l" name="136">    136 </a>			(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(<a href="/source/s?defs=gettext">gettext</a>(
<a class="l" name="137">    137 </a>			    <span class="s">"Simulation mode : skipping remaining tracks\n"</span>));
<a class="l" name="138">    138 </a>			<b>break</b>;
<a class="l" name="139">    139 </a>		}
<a class="hl" name="140">    140 </a>	}
<a class="l" name="141">    141 </a>	<b>for</b> (i = <span class="n">0</span>; i &lt; <a href="/source/s?defs=nfiles">nfiles</a>; i++)
<a class="l" name="142">    142 </a>		(<a href="/source/s?defs=h_ptr">h_ptr</a>[i])-&gt;<a href="/source/s?defs=bstr_close">bstr_close</a>(<a href="/source/s?defs=h_ptr">h_ptr</a>[i]);
<a class="l" name="143">    143 </a>	<a href="/source/s?defs=free">free</a>(<a href="/source/s?defs=ti">ti</a>);
<a class="l" name="144">    144 </a>	<a href="/source/s?defs=free">free</a>(<a href="/source/s?defs=h_ptr">h_ptr</a>);
<a class="l" name="145">    145 </a>
<a class="l" name="146">    146 </a>	<a href="/source/s?defs=write_fini">write_fini</a>();
<a class="l" name="147">    147 </a>
<a class="l" name="148">    148 </a>	<a href="/source/s?defs=fini_device">fini_device</a>(<a href="/source/s?defs=target">target</a>);
<a class="l" name="149">    149 </a>	<a href="/source/s?defs=exit">exit</a>(<span class="n">0</span>);
<a class="hl" name="150">    150 </a>}
<a class="l" name="151">    151 </a></pre></div>
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