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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am working to customize gstreamer plugin to support <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="mso-margin-bottom-alt:auto;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:#242729">working to modify gstreamer plugin - videoconvert get obtain output data allocated as gpu memory allocated buffers.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-bottom-alt:auto;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:#242729">As part of first step have modified the plugin to update the src template to include the gpu memory caps.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-bottom-alt:auto;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:#242729">Allocation for gpu memory is done is transform_frame, but before that being called stream error and negotition is failing<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-bottom-alt:auto;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:#242729">Commented part<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">// #define CSP_VIDEO_CAPS GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS_ALL) ";" \<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY", GST_VIDEO_FORMATS_ALL)<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-bottom-alt:auto;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:#242729">Modified part<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">#define CSP_VIDEO_CAPS_SRC GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS_ALL) ";" \<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("memory:GBM", GST_VIDEO_FORMATS_ALL)<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in"><o:p> </o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">//#define CSP_VIDEO_CAPS_SRC GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("memory:GBM", GST_VIDEO_FORMATS_ALL)<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">static GstStaticPadTemplate gst_video_convert_src_template =<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">GST_STATIC_PAD_TEMPLATE ("src",<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in"> GST_PAD_SRC,<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in"> GST_PAD_ALWAYS,<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in"> GST_STATIC_CAPS (CSP_VIDEO_CAPS_SRC)<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in"> );<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-bottom-alt:auto;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:#242729">While trying to run the playback pipeline getting errors related to negotitation and stream error like below<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">Additional debug info:<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">../../../../gstreamer-1.14.4/libs/gst/base/gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:<o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none windowtext 1.0pt;padding:0in">streaming stopped, reason not-negotiated (-4)</span><span style="font-size:10.0pt;font-family:"var(--ff-mono)",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Further debugging from logs suggest intersect of capsfilter input and the caps filter is coming as EMPTY
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">0:00:06.974521920 4320 0x10cde60 DEBUG capsfilter gstcapsfilter.c:296:gst_capsfilter_transform_caps:<capsfilter0> input: video/x-raw(memory:GBM), format=(string)NV12, width=(int)[ 1, 32767 ], height=(int)[ 1, 32767 ],
framerate=(fraction)[ 0/1, 2147483647/1 ]; video/x-raw(memory:GBM), width=(int)[ 1, 32767 ], height=(int)[ 1, 32767 ], framerate=(fraction)[ 0/1, 2147483647/1 ], format=(string){ I420, YV12, YUY2, UYVY, AYUV, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR,
RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, NV12, NV21, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10BE, I420_10LE, I422_10BE, I422_10LE, Y444_10BE, Y444_10LE, GBR, GBR_10BE,
GBR_10LE, NV16, NV24, NV12_64Z32, A420_10BE, A420_10LE, A422_10BE, A422_10LE, A444_10BE, A444_10LE, NV61, P010_10BE, P010_10LE, IYU2, VYUY, GBRA, GBRA_10BE, GBRA_10LE, GBR_12BE, GBR_12LE, GBRA_12BE, GBRA_12LE, I420_12BE, I420_12LE, I422_12BE, I422_12LE, Y444_12BE,
Y444_12LE, GRAY10_LE32, NV12_10LE32, NV16_10LE32 }<o:p></o:p></p>
<p class="MsoNormal">0:00:06.974569108 4320 0x10cde60 DEBUG capsfilter gstcapsfilter.c:297:gst_capsfilter_transform_caps:<capsfilter0> filter: (NULL)<o:p></o:p></p>
<p class="MsoNormal">0:00:06.974616661 4320 0x10cde60 DEBUG capsfilter gstcapsfilter.c:299:gst_capsfilter_transform_caps:<capsfilter0> caps filter: video/x-raw, width=(int)1280, height=(int)720, framerate=(fraction)15/2, format=(string)YUY2<o:p></o:p></p>
<p class="MsoNormal">0:00:06.974651037 4320 0x10cde60 DEBUG capsfilter gstcapsfilter.c:300:gst_capsfilter_transform_caps:<capsfilter0> intersect: EMPTY<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards<o:p></o:p></p>
<p class="MsoNormal">Gaurav<o:p></o:p></p>
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