gstreamer/sys/vdpau/gstvdp/gstvdpvideosrcpad.c
Carl-Anton Ingmarsson 80749da166 vdpau: change gst_vdp_video_src_pad_get_device behaviour
it now creates the device if it's not available
2010-06-23 21:51:53 +02:00

428 lines
12 KiB
C

/*
* GStreamer
* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gstvdpvideobuffer.h"
#include "gstvdpvideosrcpad.h"
GST_DEBUG_CATEGORY_STATIC (gst_vdp_video_src_pad_debug);
#define GST_CAT_DEFAULT gst_vdp_video_src_pad_debug
enum
{
PROP_0,
PROP_DISPLAY
};
struct _GstVdpVideoSrcPad
{
GstPad pad;
GstCaps *caps;
GstVdpDevice *device;
gboolean yuv_output;
gint width, height;
guint32 fourcc;
/* properties */
gchar *display;
};
struct _GstVdpVideoSrcPadClass
{
GstPadClass pad_class;
};
#define DEBUG_INIT(bla) \
GST_DEBUG_CATEGORY_INIT (gst_vdp_video_src_pad_debug, "vdpvideosrcpad", 0, "GstVdpVideoSrcPad");
G_DEFINE_TYPE_WITH_CODE (GstVdpVideoSrcPad, gst_vdp_video_src_pad, GST_TYPE_PAD,
DEBUG_INIT ());
GstFlowReturn
gst_vdp_video_src_pad_push (GstVdpVideoSrcPad * vdp_pad,
GstVdpVideoBuffer * video_buf)
{
GstPad *pad;
GstBuffer *out_buf;
g_return_val_if_fail (GST_IS_VDP_VIDEO_SRC_PAD (vdp_pad), GST_FLOW_ERROR);
g_return_val_if_fail (GST_IS_VDP_VIDEO_BUFFER (video_buf), GST_FLOW_ERROR);
pad = (GstPad *) vdp_pad;
if (G_UNLIKELY (!GST_PAD_CAPS (pad)))
return GST_FLOW_NOT_NEGOTIATED;
if (vdp_pad->yuv_output) {
guint size;
GstFlowReturn ret;
GstCaps *caps;
if (!gst_vdp_video_buffer_calculate_size (vdp_pad->fourcc, vdp_pad->width,
vdp_pad->height, &size)) {
GST_ERROR_OBJECT (vdp_pad, "Couldn't calculate buffer size for caps");
gst_buffer_unref (GST_BUFFER_CAST (video_buf));
return GST_FLOW_ERROR;
}
caps = GST_PAD_CAPS (pad);
ret = gst_pad_alloc_buffer (pad,
GST_BUFFER_OFFSET_NONE, size, caps, &out_buf);
if (ret != GST_FLOW_OK) {
gst_buffer_unref (GST_BUFFER_CAST (video_buf));
return ret;
}
if (!gst_caps_is_equal_fixed (caps, GST_BUFFER_CAPS (out_buf))) {
GST_ERROR_OBJECT (vdp_pad,
"Sink element allocated buffer with different caps");
gst_buffer_unref (GST_BUFFER_CAST (video_buf));
gst_buffer_unref (out_buf);
return GST_FLOW_ERROR;
}
if (!gst_vdp_video_buffer_download (video_buf, out_buf, vdp_pad->fourcc,
vdp_pad->width, vdp_pad->height)) {
GST_ERROR_OBJECT (vdp_pad,
"Couldn't convert from GstVdpVideoBuffer to the requested format");
gst_buffer_unref (GST_BUFFER_CAST (video_buf));
gst_buffer_unref (out_buf);
return GST_FLOW_ERROR;
}
gst_buffer_copy_metadata (out_buf, (const GstBuffer *) video_buf,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
gst_buffer_unref (GST_BUFFER_CAST (video_buf));
} else
out_buf = GST_BUFFER_CAST (video_buf);
/* FIXME: can't use gst_buffer_set_caps since we may have additional
* references to the bufffer. We can't either use
* gst_buffer_make_metadata_writable since that creates a regular buffer and
* not a GstVdpVideoBuffer */
gst_caps_replace (&(GST_BUFFER_CAPS (out_buf)), GST_PAD_CAPS (vdp_pad));
return gst_pad_push (pad, out_buf);
}
static void
gst_vdp_video_src_pad_update_caps (GstVdpVideoSrcPad * vdp_pad)
{
GstCaps *caps;
const GstCaps *templ_caps;
if (vdp_pad->caps)
gst_caps_unref (vdp_pad->caps);
caps = gst_vdp_video_buffer_get_allowed_caps (vdp_pad->device);
if ((templ_caps = gst_pad_get_pad_template_caps (GST_PAD (vdp_pad)))) {
vdp_pad->caps = gst_caps_intersect (caps, templ_caps);
gst_caps_unref (caps);
} else
vdp_pad->caps = caps;
}
static gboolean
gst_vdp_video_src_pad_open_device (GstVdpVideoSrcPad * vdp_pad, GError ** error)
{
GstVdpDevice *device;
vdp_pad->device = device = gst_vdp_get_device (vdp_pad->display);
if (G_UNLIKELY (!vdp_pad->device))
goto device_error;
return TRUE;
device_error:
g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_OPEN_READ,
"Couldn't create GstVdpDevice");
return FALSE;
}
GstFlowReturn
gst_vdp_video_src_pad_alloc_buffer (GstVdpVideoSrcPad * vdp_pad,
GstVdpVideoBuffer ** video_buf)
{
GstCaps *caps;
GstFlowReturn ret;
g_return_val_if_fail (GST_IS_VDP_VIDEO_SRC_PAD (vdp_pad), GST_FLOW_ERROR);
caps = GST_PAD_CAPS (vdp_pad);
if (!caps)
return GST_FLOW_NOT_NEGOTIATED;
if (vdp_pad->yuv_output) {
GstVdpDevice *device;
if (G_UNLIKELY (!vdp_pad->device)) {
if (!gst_vdp_video_src_pad_open_device (vdp_pad, NULL))
goto device_error;
gst_vdp_video_src_pad_update_caps (vdp_pad);
}
device = vdp_pad->device;
*video_buf = gst_vdp_video_buffer_new (device, VDP_CHROMA_TYPE_420,
vdp_pad->width, vdp_pad->height);
if (!*video_buf)
goto video_buffer_error;
} else {
ret = gst_pad_alloc_buffer ((GstPad *) vdp_pad, 0, 0, caps,
(GstBuffer **) video_buf);
if (ret != GST_FLOW_OK)
return ret;
if (!gst_caps_is_equal_fixed (caps, GST_BUFFER_CAPS (*video_buf)))
goto wrong_caps;
if (G_UNLIKELY (!vdp_pad->device)) {
vdp_pad->device =
g_object_ref (GST_VDP_VIDEO_BUFFER (*video_buf)->device);
gst_vdp_video_src_pad_update_caps (vdp_pad);
}
}
return GST_FLOW_OK;
device_error:
GST_ERROR_OBJECT (vdp_pad, "Couldn't create GstVdpDevice");
return GST_FLOW_ERROR;
video_buffer_error:
GST_ERROR_OBJECT (vdp_pad, "Couldn't create GstVdpVideoBuffer");
return GST_FLOW_ERROR;
wrong_caps:
GST_ERROR_OBJECT (vdp_pad, "Sink element returned buffer with wrong caps");
gst_buffer_unref (GST_BUFFER_CAST (*video_buf));
return GST_FLOW_ERROR;
}
static gboolean
gst_vdp_video_src_pad_setcaps (GstPad * pad, GstCaps * caps)
{
GstVdpVideoSrcPad *vdp_pad = GST_VDP_VIDEO_SRC_PAD (pad);
const GstStructure *structure;
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "video/x-raw-yuv")) {
if (!gst_structure_get_int (structure, "width", &vdp_pad->width))
return FALSE;
if (!gst_structure_get_int (structure, "height", &vdp_pad->height))
return FALSE;
if (!gst_structure_get_fourcc (structure, "format", &vdp_pad->fourcc))
return FALSE;
vdp_pad->yuv_output = TRUE;
} else if (gst_structure_has_name (structure, "video/x-vdpau-video")) {
if (!gst_structure_get_int (structure, "width", &vdp_pad->width))
return FALSE;
if (!gst_structure_get_int (structure, "height", &vdp_pad->height))
return FALSE;
vdp_pad->yuv_output = FALSE;
} else
return FALSE;
return TRUE;
}
GstFlowReturn
gst_vdp_video_src_pad_get_device (GstVdpVideoSrcPad * vdp_pad,
GstVdpDevice ** device, GError ** error)
{
g_return_val_if_fail (GST_IS_VDP_VIDEO_SRC_PAD (vdp_pad), FALSE);
if (!GST_PAD_CAPS (vdp_pad))
return GST_FLOW_NOT_NEGOTIATED;
if (G_UNLIKELY (!vdp_pad->device)) {
if (vdp_pad->yuv_output) {
if (!gst_vdp_video_src_pad_open_device (vdp_pad, error))
return GST_FLOW_ERROR;
}
else {
GstFlowReturn ret;
GstBuffer *buf;
ret = gst_pad_alloc_buffer (GST_PAD (vdp_pad), 0, 0,
GST_PAD_CAPS (vdp_pad), &buf);
if (ret != GST_FLOW_OK)
goto alloc_failed;
if (!gst_caps_is_equal_fixed (GST_PAD_CAPS (vdp_pad),
GST_BUFFER_CAPS (buf))) {
gst_buffer_unref (buf);
goto wrong_caps;
}
if (!GST_IS_VDP_VIDEO_BUFFER (buf)) {
gst_buffer_unref (buf);
goto invalid_buffer;
}
vdp_pad->device = g_object_ref (GST_VDP_VIDEO_BUFFER (buf)->device);
}
gst_vdp_video_src_pad_update_caps (vdp_pad);
}
*device = vdp_pad->device;
return GST_FLOW_OK;
alloc_failed:
g_set_error (error, GST_STREAM_ERROR, GST_STREAM_ERROR_FAILED,
"Couldn't allocate buffer");
return GST_FLOW_ERROR;
wrong_caps:
g_set_error (error, GST_STREAM_ERROR, GST_STREAM_ERROR_FAILED,
"Sink element returned buffer with wrong caps");
return GST_FLOW_ERROR;
invalid_buffer:
g_set_error (error, GST_STREAM_ERROR, GST_STREAM_ERROR_FAILED,
"Sink element returned invalid buffer type");
return GST_FLOW_ERROR;
}
static GstCaps *
gst_vdp_video_src_pad_getcaps (GstPad * pad)
{
GstVdpVideoSrcPad *vdp_pad = (GstVdpVideoSrcPad *) pad;
const GstCaps *templ_caps;
if (vdp_pad->caps)
return gst_caps_copy (vdp_pad->caps);
else if ((templ_caps = gst_pad_get_pad_template_caps (pad)))
return gst_caps_copy (templ_caps);
return NULL;
}
static gboolean
gst_vdp_video_src_pad_activate_push (GstPad * pad, gboolean active)
{
GstVdpVideoSrcPad *vdp_pad = GST_VDP_VIDEO_SRC_PAD (pad);
if (!active) {
if (vdp_pad->device)
g_object_unref (vdp_pad->device);
vdp_pad->device = NULL;
if (vdp_pad->caps)
gst_caps_unref (vdp_pad->caps);
vdp_pad->caps = NULL;
}
return TRUE;
}
GstVdpVideoSrcPad *
gst_vdp_video_src_pad_new (GstPadTemplate * templ, const gchar * name)
{
g_return_val_if_fail (GST_IS_PAD_TEMPLATE (templ), NULL);
g_return_val_if_fail ((templ->direction == GST_PAD_SRC), NULL);
return g_object_new (GST_TYPE_VDP_VIDEO_SRC_PAD,
"name", name, "direction", templ->direction, "template", templ, NULL);
}
static void
gst_vdp_video_src_pad_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstVdpVideoSrcPad *vdp_pad = (GstVdpVideoSrcPad *) object;
switch (prop_id) {
case PROP_DISPLAY:
g_value_set_string (value, vdp_pad->display);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_vdp_video_src_pad_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVdpVideoSrcPad *vdp_pad = (GstVdpVideoSrcPad *) object;
switch (prop_id) {
case PROP_DISPLAY:
vdp_pad->display = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_vdp_video_src_pad_finalize (GObject * object)
{
GstVdpVideoSrcPad *vdp_pad = (GstVdpVideoSrcPad *) object;
g_free (vdp_pad->display);
G_OBJECT_CLASS (gst_vdp_video_src_pad_parent_class)->finalize (object);
}
static void
gst_vdp_video_src_pad_init (GstVdpVideoSrcPad * vdp_pad)
{
GstPad *pad = GST_PAD (vdp_pad);
vdp_pad->device = NULL;
vdp_pad->caps = NULL;
vdp_pad->display = NULL;
gst_pad_set_getcaps_function (pad,
GST_DEBUG_FUNCPTR (gst_vdp_video_src_pad_getcaps));
gst_pad_set_setcaps_function (pad,
GST_DEBUG_FUNCPTR (gst_vdp_video_src_pad_setcaps));
gst_pad_set_activatepush_function (pad,
GST_DEBUG_FUNCPTR (gst_vdp_video_src_pad_activate_push));
}
static void
gst_vdp_video_src_pad_class_init (GstVdpVideoSrcPadClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->get_property = gst_vdp_video_src_pad_get_property;
object_class->set_property = gst_vdp_video_src_pad_set_property;
object_class->finalize = gst_vdp_video_src_pad_finalize;
g_object_class_install_property (object_class, PROP_DISPLAY,
g_param_spec_string ("display", "Display", "X Display name",
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
}