/* Parse the SPS/PPS in ISOM format in extradata. */ pb = avio_alloc_context(extradata, extradata_size, 0, NULL, NULL, NULL, NULL); if (!pb) return AVERROR(ENOMEM); version = avio_r8(pb); /* version */ avio_r8(pb); /* avc profile */ avio_r8(pb); /* avc profile compat */ avio_r8(pb); /* avc level */ nal_length_size = avio_r8(pb); /* 6 bits reserved (111111) + 2 bits nal size length - 1 (11) */ nb_sps = avio_r8(pb); /* 3 bits reserved (111) + 5 bits number of sps */用gstreamer的接口怎么改写
时间: 2024-02-26 13:57:25 浏览: 293
您可以使用GStreamer的h264parse元素来解析ISOM格式中的SPS / PPS。以下是使用h264parse元素的示例代码:
```
GstElement *pipeline, *src, *parse;
pipeline = gst_pipeline_new("h264-parse-pipeline");
src = gst_element_factory_make("filesrc", NULL);
parse = gst_element_factory_make("h264parse", NULL);
g_object_set(G_OBJECT(src), "location", "input.mp4", NULL);
gst_bin_add_many(GST_BIN(pipeline), src, parse, NULL);
gst_element_link(src, parse);
//在这里添加您的其他元素和链接
gst_element_set_state(pipeline, GST_STATE_PLAYING);
//在这里处理GStreamer消息线程
gst_element_set_state(pipeline, GST_STATE_NULL);
gst_object_unref(GST_OBJECT(pipeline));
```
请注意,您需要提供一个文件源元素(例如filesrc)来读取包含ISOM格式的视频文件。如果您正在使用其他类型的源,则需要相应地更改源元素。此外,您需要添加其他元素和链接以构建完整的GStreamer管道。
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