{"id":198693,"date":"2024-11-14T22:11:48","date_gmt":"2024-11-14T14:11:48","guid":{"rendered":"https:\/\/server.hk\/cnblog\/198693\/"},"modified":"2024-11-14T22:11:48","modified_gmt":"2024-11-14T14:11:48","slug":"c%e8%aa%9e%e8%a8%80linux%e9%8c%84%e9%9f%b3%e6%95%99%e7%a8%8b%ef%bc%8c%e8%bc%95%e9%ac%86%e9%96%8b%e7%99%bc%e8%87%aa%e5%b7%b1%e7%9a%84%e9%8c%84%e9%9f%b3%e7%a8%8b%e5%ba%8f%e3%80%82-c-linux%e9%8c%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/198693\/","title":{"rendered":"C\u8a9e\u8a00Linux\u9304\u97f3\u6559\u7a0b\uff0c\u8f15\u9b06\u958b\u767c\u81ea\u5df1\u7684\u9304\u97f3\u7a0b\u5e8f\u3002 (c linux\u9304\u97f3)"},"content":{"rendered":"<h1 id=\"c%e8%aa%9e%e8%a8%80linux%e9%8c%84%e9%9f%b3%e6%95%99%e7%a8%8b%ef%bc%8c%e8%bc%95%e9%ac%86%e9%96%8b%e7%99%bc%e8%87%aa%e5%b7%b1%e7%9a%84%e9%8c%84%e9%9f%b3%e7%a8%8b%e5%ba%8f-BXyPrunIdt\">C\u8a9e\u8a00Linux\u9304\u97f3\u6559\u7a0b\uff0c\u8f15\u9b06\u958b\u767c\u81ea\u5df1\u7684\u9304\u97f3\u7a0b\u5e8f<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u4f4d\u5316\u7684\u6642\u4ee3\uff0c\u9304\u97f3\u6280\u8853\u5df2\u7d93\u6210\u70ba\u8a31\u591a\u61c9\u7528\u7a0b\u5e8f\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u7121\u8ad6\u662f\u958b\u767c\u8a9e\u97f3\u8b58\u5225\u7cfb\u7d71\u3001\u97f3\u6a02\u61c9\u7528\u9084\u662f\u7c21\u55ae\u7684\u9304\u97f3\u5de5\u5177\uff0c\u638c\u63e1\u5982\u4f55\u5728Linux\u74b0\u5883\u4e0b\u4f7f\u7528C\u8a9e\u8a00\u9032\u884c\u9304\u97f3\u90fd\u662f\u4e00\u9805\u975e\u5e38\u6709\u7528\u7684\u6280\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728Linux\u4e0a\u4f7f\u7528C\u8a9e\u8a00\u958b\u767c\u4e00\u500b\u7c21\u55ae\u7684\u9304\u97f3\u7a0b\u5e8f\u3002<\/p>\n<h2 id=\"%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-BXyPrunIdt\">\u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u60a8\u7684Linux\u7cfb\u7d71\u5df2\u7d93\u5b89\u88dd\u4e86\u5fc5\u8981\u7684\u958b\u767c\u5de5\u5177\u548c\u5eab\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u5b89\u88ddGCC\u7de8\u8b6f\u5668\uff1a\u4f7f\u7528\u547d\u4ee4 <code>sudo apt-get install build-essential<\/code> \u4f86\u5b89\u88dd\u3002<\/li>\n<li>\u5b89\u88ddALSA\u5eab\uff1a\u9019\u662fLinux\u4e0b\u7684\u97f3\u983b\u9a45\u52d5\u7a0b\u5e8f\uff0c\u4f7f\u7528\u547d\u4ee4 <code>sudo apt-get install libasound2-dev<\/code> \u4f86\u5b89\u88dd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%8c%84%e9%9f%b3%e7%a8%8b%e5%ba%8f%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%b5%90%e6%a7%8b-BXyPrunIdt\">\u9304\u97f3\u7a0b\u5e8f\u7684\u57fa\u672c\u7d50\u69cb<\/h2>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u7de8\u5beb\u4e00\u500b\u7c21\u55ae\u7684\u9304\u97f3\u7a0b\u5e8f\u3002\u9019\u500b\u7a0b\u5e8f\u5c07\u4f7f\u7528ALSA\u5eab\u4f86\u6355\u7372\u97f3\u983b\u6578\u64da\u4e26\u5c07\u5176\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\u3002<\/p>\n<h3 id=\"%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-BXyPrunIdt\">\u4ee3\u78bc\u793a\u4f8b<\/h3>\n<pre><code>\n#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;string.h&gt;\n#include &lt;alsa\/asoundlib.h&gt;\n\n#define PCM_DEVICE \"default\"\n#define BUFFER_SIZE 44100\n\nint main() {\n    snd_pcm_t *handle;\n    snd_pcm_hw_params_t *params;\n    unsigned int rate = 44100;\n    int dir;\n    char *buffer;\n    int pcm;\n    FILE *fp;\n\n    \/\/ \u6253\u958b\u9304\u97f3\u6587\u4ef6\n    fp = fopen(\"recording.wav\", \"wb\");\n    if (fp == NULL) {\n        perror(\"Unable to open file\");\n        return 1;\n    }\n\n    \/\/ \u6253\u958bPCM\u8a2d\u5099\n    if (snd_pcm_open(&amp;handle, PCM_DEVICE, SND_PCM_STREAM_CAPTURE, 0) &lt; 0) {\n        perror(&quot;Unable to open PCM device&quot;);\n        return 1;\n    }\n\n    \/\/ \u8a2d\u7f6e\u786c\u4ef6\u53c3\u6578\n    snd_pcm_hw_params_alloca(&amp;params);\n    snd_pcm_hw_params_any(handle, params);\n    snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);\n    snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE);\n    snd_pcm_hw_params_set_rate_near(handle, params, &amp;rate, &amp;dir);\n    snd_pcm_hw_params_set_channels(handle, params, 1);\n    snd_pcm_hw_params(handle, params);\n\n    \/\/ \u5206\u914d\u7de9\u885d\u5340\n    buffer = (char *) malloc(BUFFER_SIZE);\n    \n    \/\/ \u958b\u59cb\u9304\u97f3\n    while (1) {\n        pcm = snd_pcm_readi(handle, buffer, BUFFER_SIZE);\n        if (pcm &lt; 0) {\n            perror(&quot;Read error&quot;);\n            break;\n        }\n        fwrite(buffer, sizeof(char), pcm, fp);\n    }\n\n    \/\/ \u6e05\u7406\n    free(buffer);\n    fclose(fp);\n    snd_pcm_close(handle);\n    return 0;\n}\n<\/code><\/pre>\n<h2 id=\"%e4%bb%a3%e7%a2%bc%e8%a7%a3%e6%9e%90-BXyPrunIdt\">\u4ee3\u78bc\u89e3\u6790<\/h2>\n<p>\u4e0a\u8ff0\u4ee3\u78bc\u9996\u5148\u5305\u542b\u4e86\u5fc5\u8981\u7684\u6a19\u982d\u6587\u4ef6\uff0c\u7136\u5f8c\u5b9a\u7fa9\u4e86\u4e00\u4e9b\u5e38\u91cf\u3002\u63a5\u4e0b\u4f86\uff0c\u7a0b\u5e8f\u6253\u958b\u4e00\u500bWAV\u6587\u4ef6\u4ee5\u4fdd\u5b58\u9304\u97f3\u6578\u64da\uff0c\u4e26\u4f7f\u7528ALSA\u5eab\u6253\u958bPCM\u8a2d\u5099\u3002\u7136\u5f8c\u8a2d\u7f6e\u786c\u4ef6\u53c3\u6578\uff0c\u5305\u62ec\u97f3\u983b\u683c\u5f0f\u3001\u53d6\u6a23\u7387\u548c\u901a\u9053\u6578\u3002\u6700\u5f8c\uff0c\u7a0b\u5e8f\u9032\u5165\u4e00\u500b\u5faa\u74b0\uff0c\u4e0d\u65b7\u5f9ePCM\u8a2d\u5099\u8b80\u53d6\u6578\u64da\u4e26\u5beb\u5165\u6587\u4ef6\u4e2d\u3002<\/p>\n<h2 id=\"%e7%b7%a8%e8%ad%af%e8%88%87%e9%81%8b%e8%a1%8c-BXyPrunIdt\">\u7de8\u8b6f\u8207\u904b\u884c<\/h2>\n<p>\u5c07\u4e0a\u8ff0\u4ee3\u78bc\u4fdd\u5b58\u70ba <code>record.c<\/code>\uff0c\u7136\u5f8c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u7de8\u8b6f\uff1a<\/p>\n<pre><code>gcc record.c -o record -lasound<\/code><\/pre>\n<p>\u904b\u884c\u7a0b\u5e8f\uff1a<\/p>\n<pre><code>.\/record<\/code><\/pre>\n<p>\u8981\u505c\u6b62\u9304\u97f3\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 <code>Ctrl + C<\/code> \u7d44\u5408\u9375\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BXyPrunIdt\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u60a8\u5df2\u7d93\u5b78\u6703\u4e86\u5982\u4f55\u5728Linux\u74b0\u5883\u4e0b\u4f7f\u7528C\u8a9e\u8a00\u958b\u767c\u4e00\u500b\u7c21\u55ae\u7684\u9304\u97f3\u7a0b\u5e8f\u3002\u9019\u500b\u7a0b\u5e8f\u53ef\u4ee5\u4f5c\u70ba\u60a8\u9032\u4e00\u6b65\u63a2\u7d22\u97f3\u983b\u8655\u7406\u548c\u958b\u767c\u7684\u57fa\u790e\u3002\u82e5\u60a8\u9700\u8981\u66f4\u5f37\u5927\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4f86\u904b\u884c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9019\u6a23\u53ef\u4ee5\u7372\u5f97\u66f4\u597d\u7684\u8cc7\u6e90\u914d\u7f6e\u548c\u7db2\u7d61\u9023\u63a5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2C\u8a9e\u8a00\u5728Linux\u4e0a\u958b\u767c\u9304\u97f3\u7a0b\u5e8f\u7684\u7c21\u6613\u6559\u7a0b\uff0c\u8f15\u9b06\u638c\u63e1\u9304\u97f3\u6280\u8853\uff0c\u5be6\u73fe\u500b\u6027\u5316\u9304\u97f3\u61c9\u7528\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-198693","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/198693","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=198693"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/198693\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=198693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=198693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=198693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}