Assertion is only supported by devices of compute capability 2.x and higher. It is not supported...
在GStreamer中,可以使用GstVideoCodecFrameFlags来获取H.264编码的帧类型。具体来说,可以按照以下步骤判断是I帧还是P帧: 从GstSample中获取到GstBuffer对象。 使用gst_video_codec_frame_get_type()函数来获取帧类型。 判断返回的帧类型是否为GST_VIDEO_CODEC_FRAME_FLAG_DELTA_UNIT,如果是,则表示为P帧;否则,表示...
GstFlowReturnnew_sample_callback(GstAppSink*sink,gpointer user_data){ GstSample*sample=gst_app_sink_pull_sample(sink); GstBuffer*buffer=gst_sample_get_buffer(sample); GstMapInfomap_info; if(gst_buffer_map(buffer,&map_info,GST_MAP_READ)){ // 获取图像数据 cv::Matframe(map_info.size.height...
gst_sample_get_buffer 获取sample中包含的buffer数据 GstBuffer * gst_sample_get_buffer (GstSample * sample) 这个接口返回buffer或者NULL(当没有buffer的时候)。buffer的有效其和sample一样长。 gst_sample_get_caps 获取sample的caps信息 GstCaps * gst_sample_get_caps (GstSample * sample) ...
GstBuffer *buffer = NULL; g_signal_emit_by_name(sink, "pull-sample", &sample); if (!sample) { g_printerr("[camera_sdk_impl.cpp][handle_sample], sample is NULL!!!"); return GST_FLOW_OK; } GstBuffer *buf = gst_sample_get_buffer(sample); ...
GstMemory* mem; int height, width, size; int fd; void* map_data; while (is_streaming__) { if (sink_pipeline__->GetIsNewFrameAvailable()) { sink_pipeline__->GetLatestSample(&sample); # 这里都是为了拿到buffer caps = gst_sample_get_caps(sample); ...
; cv::Mat frame; GstElement *appsink = gst_bin_get_by_name(GST_BIN(pipeline), "appsink0"); while (true) { // Pull sample from appsink sample = gst_app_sink_pull_sample(GST_APP_SINK(appsink)); // Get buffer from sample GstBuffer *buffer = gst_sample_get_buffer...
GstBuffer *buf; GstMapInfo map; FILE *fp; /* get the sample from appsink */ sample = gst_app_sink_pull_sample(elt); buf = gst_sample_get_buffer(sample); if (gst_buffer_map (buf, &map, GST_MAP_READ)) { /* map.data, map.size */ ...
auto* buffer = gst_sample_get_buffer(sample.get()); auto* caps = gst_sample_get_caps(sample.get()); if (auto size = getVideoResolutionFromCaps(caps)) setSize({ static_cast<int>(size->width()), static_cast<int>(size->height()) }); int frameRateNumerator, frameRateDenominator; au...
auto* buffer = gst_sample_get_buffer(sample.get()); auto* caps = gst_sample_get_caps(sample.get()); if (auto size = getVideoResolutionFromCaps(caps))setSize({ static_cast<int>(size->width()), static_cast<int>(size->height()) });int...