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Problem in pad negotiation

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Vikas Patel

Problem in pad negotiation

Hi,

I’m developing a Gstreamer plugin for video decoder.

But when I try to create a complete pipeline by connecting with ffmpegcolorscale plugin it throws a error by saying that…

“pad returned caps ANY which are not a real subset of its template caps video/x-raw-yuv, format=(fourcc){ YV12, I420, Y42B }, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], framerate=(int)[ 1, 60 ]”

Template for sink is like as

static GstPadTemplate *src_templ (void)

{

static GstPadTemplate *templ = NULL;

if (!templ)

{

GstCaps *caps;

GstStructure *structure;

GValue list = { 0 } ,fmt = { 0};

char *fmts[] = { "YV12", "I420", "Y42B", NULL };

guint n;

caps = gst_caps_new_simple ("video/x-raw-yuv",

"format", GST_TYPE_FOURCC,

GST_MAKE_FOURCC ('I', '4', '2', '0'),

"width", GST_TYPE_INT_RANGE, 16, 4096,

"height", GST_TYPE_INT_RANGE, 16, 4096,

"framerate", GST_TYPE_INT_RANGE, 1, 60,

NULL);

structure = gst_caps_get_structure (caps, 0);

g_value_init (&list, GST_TYPE_LIST);

g_value_init (&fmt, GST_TYPE_FOURCC);

for (n = 0; fmts[n] != NULL; n++)

{

gst_value_set_fourcc (&fmt, GST_STR_FOURCC (fmts[n]));

gst_value_list_append_value (&list, &fmt);

}

gst_structure_set_value (structure, "format", &list);

g_value_unset (&list);

g_value_unset (&fmt);

templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);

}

return templ;

}

Please let me know where I am wrong.

Regards

Vikas

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Sudarshan Bisht

Re: Problem in pad negotiation

Hi Vikas ,

Can u tell me when you do gst-inspect ur-decoder-plugin , what caps u get at sink pad ?

On Tue, Dec 30, 2008 at 3:24 PM, Vikas Patel <[hidden email]> wrote:

Hi,

I'm developing a Gstreamer plugin for video decoder.

But when I try to create a complete pipeline by connecting with ffmpegcolorscale plugin it throws a error by saying that…

"pad returned caps ANY which are not a real subset of its template caps video/x-raw-yuv, format=(fourcc){ YV12, I420, Y42B }, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], framerate=(int)[ 1, 60 ]"

Template for sink is like as

static GstPadTemplate *src_templ (void)

{

    static GstPadTemplate *templ = NULL;

    if (!templ)

    {

        GstCaps *caps;

        GstStructure *structure;

        GValue list = { 0 } ,fmt = { 0};

        char *fmts[] = { "YV12", "I420", "Y42B", NULL };

        guint n;

        caps = gst_caps_new_simple ("video/x-raw-yuv",

                                    "format", GST_TYPE_FOURCC,

                                        GST_MAKE_FOURCC ('I', '4', '2', '0'),

                                    "width", GST_TYPE_INT_RANGE, 16, 4096,

                                    "height", GST_TYPE_INT_RANGE, 16, 4096,

                                    "framerate", GST_TYPE_INT_RANGE, 1, 60,

                                    NULL);

        structure = gst_caps_get_structure (caps, 0);

        g_value_init (&list, GST_TYPE_LIST);

        g_value_init (&fmt, GST_TYPE_FOURCC);

        for (n = 0; fmts[n] != NULL; n++)

        {

            gst_value_set_fourcc (&fmt, GST_STR_FOURCC (fmts[n]));

            gst_value_list_append_value (&list, &fmt);

        }

        gst_structure_set_value (structure, "format", &list);

        g_value_unset (&list);

        g_value_unset (&fmt);

        templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);

    }

return templ;

}

Please let me know where I am wrong.

Regards

Vikas

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Regards,

Sudarshan Bisht

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Vikas Patel

Re: Problem in pad negotiation

Hi sudarshan,

I get this kind of caps at sink pad

Pad Templates:

SINK template: 'sink'

Availability: Always

Capabilities:

video/mpeg

mpegversion: 4

systemstream: false

width: [ 16, 4096 ]

height: [ 16, 4096 ]

framerate: [ 1, 60 ]

Regards

Vikas

From: sudarshan bisht [mailto:[hidden email]]
Sent: Tuesday, December 30, 2008 3:55 PM
To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] Problem in pad negotiation

Hi Vikas ,

Can u tell me when you do gst-inspect ur-decoder-plugin , what caps u get at sink pad ?

On Tue, Dec 30, 2008 at 3:24 PM, Vikas Patel <[hidden email]> wrote:

Hi,

I'm developing a Gstreamer plugin for video decoder.

But when I try to create a complete pipeline by connecting with ffmpegcolorscale plugin it throws a error by saying that…

"pad returned caps ANY which are not a real subset of its template caps video/x-raw-yuv, format=(fourcc){ YV12, I420, Y42B }, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], framerate=(int)[ 1, 60 ]"

Template for sink is like as

static GstPadTemplate *src_templ (void)

{

static GstPadTemplate *templ = NULL;

if (!templ)

{

GstCaps *caps;

GstStructure *structure;

GValue list = { 0 } ,fmt = { 0};

char *fmts[] = { "YV12", "I420", "Y42B", NULL };

guint n;

caps = gst_caps_new_simple ("video/x-raw-yuv",

"format", GST_TYPE_FOURCC,

GST_MAKE_FOURCC ('I', '4', '2', '0'),

"width", GST_TYPE_INT_RANGE, 16, 4096,

"height", GST_TYPE_INT_RANGE, 16, 4096,

"framerate", GST_TYPE_INT_RANGE, 1, 60,

NULL);

structure = gst_caps_get_structure (caps, 0);

g_value_init (&list, GST_TYPE_LIST);

g_value_init (&fmt, GST_TYPE_FOURCC);

for (n = 0; fmts[n] != NULL; n++)

{

gst_value_set_fourcc (&fmt, GST_STR_FOURCC (fmts[n]));

gst_value_list_append_value (&list, &fmt);

}

gst_structure_set_value (structure, "format", &list);

g_value_unset (&list);

g_value_unset (&fmt);

templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);

}

return templ;

}

Please let me know where I am wrong.

Regards

Vikas

-
This message is subject to Imagination Technologies' e-mail terms: http://www.imgtec.com/e-mail.htm
-

--
Regards,

Sudarshan Bisht

-
This message is subject to Imagination Technologies' e-mail terms: http://www.imgtec.com/e-mail.htm
-

Sudarshan Bisht

Re: Problem in pad negotiation

Hi vikas ,,

Sorry ,, I want to the caps know at src pad ,, and tell me the pipeline (elements) you are using .

On Tue, Dec 30, 2008 at 4:07 PM, Vikas Patel <[hidden email]> wrote:

Hi sudarshan,

I get this kind of caps at sink pad

Pad Templates:

SINK template: 'sink'

    Availability: Always

    Capabilities:

      video/mpeg

            mpegversion: 4

           systemstream: false

                  width: [ 16, 4096 ]

                 height: [ 16, 4096 ]

              framerate: [ 1, 60 ]

Regards

Vikas

From: sudarshan bisht [mailto:[hidden email]]
Sent: Tuesday, December 30, 2008 3:55 PM
To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] Problem in pad negotiation

Hi Vikas ,

              Can u tell me when you do gst-inspect ur-decoder-plugin , what caps u get at sink pad ?

On Tue, Dec 30, 2008 at 3:24 PM, Vikas Patel <[hidden email]> wrote:

Hi,

I'm developing a Gstreamer plugin for video decoder.

But when I try to create a complete pipeline by connecting with ffmpegcolorscale plugin it throws a error by saying that…

"pad returned caps ANY which are not a real subset of its template caps video/x-raw-yuv, format=(fourcc){ YV12, I420, Y42B }, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], framerate=(int)[ 1, 60 ]"

Template for sink is like as

static GstPadTemplate *src_templ (void)

{

    static GstPadTemplate *templ = NULL;

    if (!templ)

    {

        GstCaps *caps;

        GstStructure *structure;

        GValue list = { 0 } ,fmt = { 0};

        char *fmts[] = { "YV12", "I420", "Y42B", NULL };

        guint n;

        caps = gst_caps_new_simple ("video/x-raw-yuv",

                                    "format", GST_TYPE_FOURCC,

                                        GST_MAKE_FOURCC ('I', '4', '2', '0'),

                                    "width", GST_TYPE_INT_RANGE, 16, 4096,

                                    "height", GST_TYPE_INT_RANGE, 16, 4096,

                                    "framerate", GST_TYPE_INT_RANGE, 1, 60,

                                    NULL);

        structure = gst_caps_get_structure (caps, 0);

        g_value_init (&list, GST_TYPE_LIST);

        g_value_init (&fmt, GST_TYPE_FOURCC);

        for (n = 0; fmts[n] != NULL; n++)

        {

            gst_value_set_fourcc (&fmt, GST_STR_FOURCC (fmts[n]));

            gst_value_list_append_value (&list, &fmt);

        }

        gst_structure_set_value (structure, "format", &list);

        g_value_unset (&list);

        g_value_unset (&fmt);

        templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);

    }

return templ;

}

Please let me know where I am wrong.

Regards

Vikas

-
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-

------------------------------------------------------------------------------

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gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

--
Regards,

Sudarshan Bisht

-
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-

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Vikas Patel

Re: Problem in pad negotiation

Hi,

Pad templates are :

Pad Templates:

SINK template: 'sink'

Availability: Always

Capabilities:

video/mpeg

mpegversion: 4

systemstream: false

width: [ 16, 4096 ]

height: [ 16, 4096 ]

framerate: [ 1, 60 ]

SRC template: 'src'

Availability: Always

Capabilities:

video/x-raw-yuv

format: { YV12, I420, Y42B }

width: [ 16, 4096 ]

height: [ 16, 4096 ]

framerate: [ 1, 60 ]

and Pipeline is:

filesrc ! mpeg2dec ! ffmpegcolorscale ! videoscale ! imagesink

Regards

Vikas

From: sudarshan bisht [mailto:[hidden email]]
Sent: Tuesday, December 30, 2008 4:24 PM
To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] Problem in pad negotiation

Hi vikas ,,

Sorry ,, I want to the caps know at src pad ,, and tell me the pipeline (elements) you are using .

On Tue, Dec 30, 2008 at 4:07 PM, Vikas Patel <[hidden email]> wrote:

Hi sudarshan,

I get this kind of caps at sink pad

Pad Templates:

SINK template: 'sink'

Availability: Always

Capabilities:

video/mpeg

mpegversion: 4

systemstream: false

width: [ 16, 4096 ]

height: [ 16, 4096 ]

framerate: [ 1, 60 ]

Regards

Vikas

Hi Vikas ,

Can u tell me when you do gst-inspect ur-decoder-plugin , what caps u get at sink pad ?

On Tue, Dec 30, 2008 at 3:24 PM, Vikas Patel <[hidden email]> wrote:

Hi,

I'm developing a Gstreamer plugin for video decoder.

But when I try to create a complete pipeline by connecting with ffmpegcolorscale plugin it throws a error by saying that…

Template for sink is like as

static GstPadTemplate *src_templ (void)

{

static GstPadTemplate *templ = NULL;

if (!templ)

{

GstCaps *caps;

GstStructure *structure;

GValue list = { 0 } ,fmt = { 0};

char *fmts[] = { "YV12", "I420", "Y42B", NULL };

guint n;

caps = gst_caps_new_simple ("video/x-raw-yuv",

"format", GST_TYPE_FOURCC,

GST_MAKE_FOURCC ('I', '4', '2', '0'),

"width", GST_TYPE_INT_RANGE, 16, 4096,

"height", GST_TYPE_INT_RANGE, 16, 4096,

"framerate", GST_TYPE_INT_RANGE, 1, 60,

NULL);

structure = gst_caps_get_structure (caps, 0);

g_value_init (&list, GST_TYPE_LIST);

g_value_init (&fmt, GST_TYPE_FOURCC);

for (n = 0; fmts[n] != NULL; n++)

{

gst_value_set_fourcc (&fmt, GST_STR_FOURCC (fmts[n]));

gst_value_list_append_value (&list, &fmt);

}

gst_structure_set_value (structure, "format", &list);

g_value_unset (&list);

g_value_unset (&fmt);

templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);

}

return templ;

}

Please let me know where I am wrong.

Regards

Vikas

-
This message is subject to Imagination Technologies' e-mail terms: http://www.imgtec.com/e-mail.htm
-

--
Regards,

Sudarshan Bisht

-
This message is subject to Imagination Technologies' e-mail terms: http://www.imgtec.com/e-mail.htm
-

--
Regards,

Sudarshan Bisht

-
This message is subject to Imagination Technologies' e-mail terms: http://www.imgtec.com/e-mail.htm
-

Sudarshan Bisht

Re: Problem in pad negotiation

Hi Vikas,

You can check gstmpeg2dec.c file in gst-plugins-ugly-0.10.9\ext\mpeg2dec , it will be same as your decoder plugin .

And instead of creating caps template dynamically , it is easy to create them statically .

On Tue, Dec 30, 2008 at 4:56 PM, Vikas Patel <[hidden email]> wrote:

Hi,

Pad templates are :

Pad Templates:

SINK template: 'sink'

    Availability: Always

    Capabilities:

      video/mpeg

            mpegversion: 4

           systemstream: false

                  width: [ 16, 4096 ]

                 height: [ 16, 4096 ]

              framerate: [ 1, 60 ]

SRC template: 'src'

    Availability: Always

    Capabilities:

      video/x-raw-yuv

                 format: { YV12, I420, Y42B }

                  width: [ 16, 4096 ]

                 height: [ 16, 4096 ]

              framerate: [ 1, 60 ]

and Pipeline is:

filesrc ! mpeg2dec ! ffmpegcolorscale ! videoscale ! imagesink

Regards

Vikas

From: sudarshan bisht [mailto:[hidden email]]
Sent: Tuesday, December 30, 2008 4:24 PM

To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] Problem in pad negotiation

Hi vikas ,,

             Sorry ,,  I want to the caps know at src pad ,, and tell me the pipeline (elements) you are using .

On Tue, Dec 30, 2008 at 4:07 PM, Vikas Patel <[hidden email]> wrote:

Hi sudarshan,

I get this kind of caps at sink pad

Pad Templates:

SINK template: 'sink'

    Availability: Always

    Capabilities:

      video/mpeg

            mpegversion: 4

           systemstream: false

                  width: [ 16, 4096 ]

                 height: [ 16, 4096 ]

              framerate: [ 1, 60 ]

Regards

Vikas

From: sudarshan bisht [mailto:[hidden email]]
Sent: Tuesday, December 30, 2008 3:55 PM
To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] Problem in pad negotiation

Hi Vikas ,

              Can u tell me when you do gst-inspect ur-decoder-plugin , what caps u get at sink pad ?

On Tue, Dec 30, 2008 at 3:24 PM, Vikas Patel <[hidden email]> wrote:

Hi,

I'm developing a Gstreamer plugin for video decoder.

But when I try to create a complete pipeline by connecting with ffmpegcolorscale plugin it throws a error by saying that…

"pad returned caps ANY which are not a real subset of its template caps video/x-raw-yuv, format=(fourcc){ YV12, I420, Y42B }, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], framerate=(int)[ 1, 60 ]"

Template for sink is like as

static GstPadTemplate *src_templ (void)

{

    static GstPadTemplate *templ = NULL;

    if (!templ)

    {

        GstCaps *caps;

        GstStructure *structure;

        GValue list = { 0 } ,fmt = { 0};

        char *fmts[] = { "YV12", "I420", "Y42B", NULL };

        guint n;

        caps = gst_caps_new_simple ("video/x-raw-yuv",

                                    "format", GST_TYPE_FOURCC,

                                        GST_MAKE_FOURCC ('I', '4', '2', '0'),

                                    "width", GST_TYPE_INT_RANGE, 16, 4096,

                                    "height", GST_TYPE_INT_RANGE, 16, 4096,

                                    "framerate", GST_TYPE_INT_RANGE, 1, 60,

                                    NULL);

        structure = gst_caps_get_structure (caps, 0);

        g_value_init (&list, GST_TYPE_LIST);

        g_value_init (&fmt, GST_TYPE_FOURCC);

        for (n = 0; fmts[n] != NULL; n++)

        {

            gst_value_set_fourcc (&fmt, GST_STR_FOURCC (fmts[n]));

            gst_value_list_append_value (&list, &fmt);

        }

        gst_structure_set_value (structure, "format", &list);

        g_value_unset (&list);

        g_value_unset (&fmt);

        templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);

    }

return templ;

}

Please let me know where I am wrong.

Regards

Vikas

-
This message is subject to Imagination Technologies' e-mail terms: http://www.imgtec.com/e-mail.htm
-

------------------------------------------------------------------------------

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gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

--
Regards,

Sudarshan Bisht

-
This message is subject to Imagination Technologies' e-mail terms: http://www.imgtec.com/e-mail.htm
-

------------------------------------------------------------------------------

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

--
Regards,

Sudarshan Bisht

-
This message is subject to Imagination Technologies' e-mail terms: http://www.imgtec.com/e-mail.htm
-

------------------------------------------------------------------------------

_______________________________________________
gstreamer-devel mailing list
[hidden email]
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