{"id":879,"date":"2014-09-20T14:46:39","date_gmt":"2014-09-20T06:46:39","guid":{"rendered":"http:\/\/www.menglanglang.cn\/?p=879"},"modified":"2014-09-20T14:46:39","modified_gmt":"2014-09-20T06:46:39","slug":"linux%e4%b8%adgstreamer%e6%9e%84%e5%bb%ba%e7%9a%84%e7%ae%80%e5%8d%95%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"http:\/\/www.menglanglang.cn\/?p=879","title":{"rendered":"Linux\u4e2dgstreamer\u6784\u5efa\u7684\u7b80\u5355\u65b9\u6cd5"},"content":{"rendered":"

\u5728\u535a\u6587\u201cGstreamer\u5728Ubuntu\u4e0a\u7684\u5b89\u88c5\u548cMP3\u7684\u64ad\u653e<\/a>\u201d\u4e2d\uff0c\u5199\u4e86\u5728ubuntu\u4e0a\u4ece\u5934\u5230\u5c3e\u6784\u5efagstreamer\u7684\u8be6\u7ec6\u8fc7\u7a0b\uff0c\u90a3\u662f\u6211\u5728\u4e00\u6b21\u5c0f\u9879\u76ee\u57f9\u8bad\u4e2d\u548c\u961f\u53cb\u4e00\u8d77\u52aa\u529b\u4e86\u5c06\u8fd1\u4e00\u5468\u7684\u6210\u679c\uff0c\u7f51\u4e0a\u53c2\u8003\u8d44\u6599\u5012\u662f\u5f88\u591a\uff0c\u6211\u4eec\u7684\u6b65\u9aa4\u4e5f\u662f\u6b63\u786e\u7684\uff0c\u4f46\u7531\u4e8e\u673a\u5668\u7684\u914d\u7f6e\u4ee5\u53ca\u4e0b\u8f7d\u5305\u7684\u7248\u672c\u7b49\u95ee\u9898\uff0c\u6700\u540e\u6210\u529f\u7387\u5f88\u4f4e\uff0c\u53ea\u670910%\uff0c\u4e0d\u8fc7\u5fc3\u91cc\u8fd8\u662f\u633a\u9ad8\u5174\u7684\u3002<\/p>\n

 <\/p>\n

\u4e0b\u9762\u7740\u4e9b\u662f\u6784\u5efagstreamer\u7684\u6377\u5f84\uff0c\u6210\u529f\u7387\u5728\u6211\u4eec\u505a\u540e\u662f100%\uff0c\u5e0c\u671b\u80fd\u7ed9\u4f60\u5e26\u6765\u5e2e\u52a9\u3002\u4e0d\u8fc7\u524d\u9762\u7684\u65b9\u6cd5\u8fd8\u662f\u81ea\u5df1\u80fd\u52a8\u624b\u505a\u4e00\u904d\u597d\uff0c\u867d\u7136\u65f6\u95f4\u82b1\u8d39\u591a\uff0c\u5931\u8d25\u7387\u9ad8\uff0c\u4e0d\u8fc7\u505a\u540e\u611f\u89c9\u6536\u83b7\u8fd8\u662f\u633a\u591a\u7684\u54c8\uff0cO(\u2229_\u2229)O~<\/p>\n

 <\/p>\n

\u4e00\u3001ubuntu\u4e0b\u5b89\u88c5gstreamer\u5e93<\/p>\n

libstreamer0.10-0
\nlibstreamer0.10-dev
\nlibstreamer0.10-0-dbg
\n\u4e8c\u3001\u7a0b\u5e8f\u6e90\u7801<\/p>\n

#include <gst\/gst.h>
\n#include <glib.h><\/p>\n

\/\/\u5b9a\u4e49\u6d88\u606f\u5904\u7406\u51fd\u6570
\nstatic gboolean bus_call(GstBus *bus, GstMessage *msg, gpointer data)
\n{
\nGMainLoop *loop = (GMainLoop *)data; \/\/\u4e3b\u5faa\u73af\u6307\u9488\uff0c\u63a5\u53d7EOS\u6d88\u606f\u65f6\u9000\u51fa<\/p>\n

gchar *debug;
\nGError *error;<\/p>\n

switch (GST_MESSAGE_TYPE(msg))
\n{
\ncase GST_MESSAGE_EOS:
\ng_print(\"End of stream.\\n\");
\ng_main_loop_quit(loop);
\nbreak;
\ncase GST_MESSAGE_ERROR:<\/p>\n

gst_message_parse_error(msg, &error, &debug);<\/p>\n

g_free(debug);
\ng_printerr(\"Error: %s\\n\", error->message);
\ng_error_free(error);
\ng_main_loop_quit(loop);
\nbreak;
\ndefault:
\nbreak;
\n}<\/p>\n

return TRUE;
\n}<\/p>\n

int main(int argc, char *argv[])
\n{
\nGMainLoop *loop;
\nGstElement *pipeline, *source, *decoder, *sink; \/\/\u5b9a\u4e49\u7ec4\u4ef6
\nGstBus *bus;<\/p>\n

gst_init(&argc, &argv);<\/p>\n

loop = g_main_loop_new(NULL, FALSE); \/\/\u521b\u5efa\u4e3b\u5faa\u73af\uff0c\u5728\u6267\u884cg_main_loop_run\u540e\u6b63\u5f0f\u5f00\u59cb\u5faa\u73af<\/p>\n

if (argc != 2)
\n{
\ng_printerr(\"Usage: %s\u00a0\u00a0mp3filename\\n\", argv[0]);
\nreturn -1;
\n}<\/wbr><\/p>\n

\/\/\u521b\u5efa\u7ba1\u9053\u548c\u7ec4\u4ef6
\npipeline = gst_pipeline_new(\"audio-player\");
\nsource = gst_element_factory_make(\"filesrc\", \"file-source\");
\ndecoder = gst_element_factory_make(\"mad\", \"mad-decoder\");
\nsink = gst_element_factory_make(\"autoaudiosink\", \"audio-output\");<\/p>\n

if (!pipeline || !source || !decoder || !sink)
\n{
\ng_printerr(\"One element could not be created.\\nExiting....\\n\");
\nreturn -1;
\n}<\/p>\n

\/\/\u8bbe\u7f6esource\u7684location\u53c2\u6570\uff0c\u5373\u6587\u4ef6\u7684\u5730\u5740
\ng_object_set(G_OBJECT(source), \"location\", argv[1], NULL);<\/p>\n

\/\/\u5f97\u5230\u7ba1\u9053\u7684\u6d88\u606f\u603b\u7ebf
\nbus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));<\/p>\n

\/\/\u6dfb\u52a0\u6d88\u606f\u76d1\u89c6\u5668
\ngst_bus_add_watch(bus, bus_call, loop);
\ngst_object_unref(bus);<\/p>\n

\/\/\u628a\u7ec4\u4ef6\u6dfb\u52a0\u5230\u7ba1\u9053\u4e2d\uff0c\u7ba1\u9053\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u7ec4\u4ef6\uff0c\u53ef\u4ee5\u66f4\u597d\u7684\u8ba9\u6570\u636e\u6d41\u52a8
\ngst_bin_add_many(GST_BIN(pipeline), source, decoder, sink, NULL);<\/p>\n

\/\/\u4f9d\u6b21\u94fe\u63a5\u7ec4\u4ef6
\ngst_element_link_many(source, decoder, sink, NULL);<\/p>\n

\/\/\u5f00\u59cb\u64ad\u653e
\ngst_element_set_state(pipeline, GST_STATE_PLAYING);
\ng_print(\"Running......\\n\");<\/p>\n

\/\/\u5f00\u59cb\u5faa\u73af
\ng_main_loop_run(loop);
\ng_print(\"Returned, stopping playback\\n\");
\ngst_element_set_state(pipeline, GST_STATE_NULL);
\ngst_object_unref(GST_OBJECT(pipeline));<\/p>\n

return 0;
\n}<\/p>\n

 <\/p>\n

\u4e09\u3001\u7f16\u8bd1\u8fd0\u884c<\/p>\n

gcc -Wall $(pkg-config --cflags --libs gstreamer-0.10) -g -o player player.c<\/p>\n

.\/player test.mp3<\/p>\n

Running......<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728\u535a\u6587\u201cGstreamer\u5728Ubuntu\u4e0a\u7684\u5b89\u88c5\u548cMP3\u7684\u64ad\u653e\u201d\u4e2d\uff0c\u5199\u4e86\u5728ubuntu\u4e0a\u4ece\u5934\u5230\u5c3e\u6784\u5efagstre […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[227],"tags":[281,602],"class_list":["post-879","post","type-post","status-publish","format-standard","hentry","category-linux","tag-gstreamer","tag-linux"],"_links":{"self":[{"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/posts\/879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=879"}],"version-history":[{"count":0,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/posts\/879\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=879"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}