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328 lines
8.9 KiB
C
328 lines
8.9 KiB
C
/*
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* GStreamer
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* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "gstvdpvideobuffer.h"
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#include "gstvdpvideobufferpool.h"
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#include "gstvdputils.h"
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#include "gstvdpvideosrcpad.h"
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GST_DEBUG_CATEGORY_STATIC (gst_vdp_video_src_pad_debug);
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#define GST_CAT_DEFAULT gst_vdp_video_src_pad_debug
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enum
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{
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PROP_0,
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PROP_DEVICE
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};
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struct _GstVdpVideoSrcPad
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{
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GstPad pad;
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GstVdpBufferPool *bpool;
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GstCaps *caps;
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gboolean yuv_output;
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gint width, height;
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guint32 fourcc;
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/* properties */
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GstVdpDevice *device;
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};
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struct _GstVdpVideoSrcPadClass
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{
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GstPadClass pad_class;
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};
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#define DEBUG_INIT(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_vdp_video_src_pad_debug, "vdpvideosrcpad", 0, "GstVdpVideoSrcPad");
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G_DEFINE_TYPE_WITH_CODE (GstVdpVideoSrcPad, gst_vdp_video_src_pad, GST_TYPE_PAD,
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DEBUG_INIT ());
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GstVdpVideoSrcPad *
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gst_vdp_video_src_pad_new (GstPadTemplate * templ, const gchar * name)
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{
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g_return_val_if_fail (GST_IS_PAD_TEMPLATE (templ), NULL);
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g_return_val_if_fail ((templ->direction == GST_PAD_SRC), NULL);
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return g_object_new (GST_TYPE_VDP_VIDEO_SRC_PAD,
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"name", name, "direction", templ->direction, "template", templ, NULL);
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}
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GstFlowReturn
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gst_vdp_video_src_pad_push (GstVdpVideoSrcPad * vdp_pad,
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GstVdpVideoBuffer * video_buf)
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{
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GstPad *pad;
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GstBuffer *out_buf;
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g_return_val_if_fail (GST_IS_VDP_VIDEO_SRC_PAD (vdp_pad), GST_FLOW_ERROR);
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g_return_val_if_fail (GST_IS_VDP_VIDEO_BUFFER (video_buf), GST_FLOW_ERROR);
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pad = (GstPad *) vdp_pad;
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if (G_UNLIKELY (!GST_PAD_CAPS (pad)))
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return GST_FLOW_NOT_NEGOTIATED;
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if (vdp_pad->yuv_output) {
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guint size;
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GstFlowReturn ret;
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GstCaps *caps;
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if (!gst_vdp_video_buffer_calculate_size (vdp_pad->fourcc, vdp_pad->width,
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vdp_pad->height, &size)) {
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GST_ERROR_OBJECT (vdp_pad, "Couldn't calculate buffer size for caps");
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gst_buffer_unref (GST_BUFFER_CAST (video_buf));
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return GST_FLOW_ERROR;
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}
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caps = GST_PAD_CAPS (pad);
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ret = gst_pad_alloc_buffer (pad,
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GST_BUFFER_OFFSET_NONE, size, caps, &out_buf);
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if (ret != GST_FLOW_OK) {
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gst_buffer_unref (GST_BUFFER_CAST (video_buf));
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return ret;
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}
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if (!gst_caps_is_equal_fixed (caps, GST_BUFFER_CAPS (out_buf))) {
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GST_ERROR_OBJECT (vdp_pad,
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"Sink element allocated buffer with different caps");
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gst_buffer_unref (GST_BUFFER_CAST (video_buf));
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gst_buffer_unref (out_buf);
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return GST_FLOW_ERROR;
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}
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if (!gst_vdp_video_buffer_download (video_buf, out_buf, vdp_pad->fourcc,
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vdp_pad->width, vdp_pad->height)) {
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GST_ERROR_OBJECT (vdp_pad,
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"Couldn't convert from GstVdpVideoBuffer to the requested format");
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gst_buffer_unref (GST_BUFFER_CAST (video_buf));
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gst_buffer_unref (out_buf);
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return GST_FLOW_ERROR;
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}
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gst_buffer_copy_metadata (out_buf, (const GstBuffer *) video_buf,
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GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
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gst_buffer_unref (GST_BUFFER_CAST (video_buf));
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} else
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out_buf = GST_BUFFER_CAST (video_buf);
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/* FIXME: can't use gst_buffer_set_caps since we may have additional
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* references to the bufffer. We can't either use
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* gst_buffer_make_metadata_writable since that creates a regular buffer and
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* not a GstVdpVideoBuffer */
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gst_caps_replace (&(GST_BUFFER_CAPS (out_buf)), GST_PAD_CAPS (vdp_pad));
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return gst_pad_push (pad, out_buf);
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}
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GstFlowReturn
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gst_vdp_video_src_pad_alloc_buffer (GstVdpVideoSrcPad * vdp_pad,
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GstVdpVideoBuffer ** video_buf, GError ** error)
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{
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GstCaps *caps;
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g_return_val_if_fail (GST_IS_VDP_VIDEO_SRC_PAD (vdp_pad), GST_FLOW_ERROR);
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caps = GST_PAD_CAPS (vdp_pad);
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if (!caps)
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return GST_FLOW_NOT_NEGOTIATED;
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*video_buf =
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(GstVdpVideoBuffer *) gst_vdp_buffer_pool_get_buffer (vdp_pad->bpool,
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error);
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if (!*video_buf)
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return GST_FLOW_ERROR;
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return GST_FLOW_OK;
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}
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static gboolean
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gst_vdp_video_src_pad_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstVdpVideoSrcPad *vdp_pad = GST_VDP_VIDEO_SRC_PAD (pad);
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const GstStructure *structure;
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GstCaps *video_caps;
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structure = gst_caps_get_structure (caps, 0);
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if (gst_structure_has_name (structure, "video/x-raw-yuv")) {
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if (!gst_structure_get_int (structure, "width", &vdp_pad->width))
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return FALSE;
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if (!gst_structure_get_int (structure, "height", &vdp_pad->height))
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return FALSE;
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if (!gst_structure_get_fourcc (structure, "format", &vdp_pad->fourcc))
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return FALSE;
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video_caps = gst_vdp_yuv_to_video_caps (caps);
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vdp_pad->yuv_output = TRUE;
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} else if (gst_structure_has_name (structure, "video/x-vdpau-video")) {
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if (!gst_structure_get_int (structure, "width", &vdp_pad->width))
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return FALSE;
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if (!gst_structure_get_int (structure, "height", &vdp_pad->height))
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return FALSE;
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video_caps = gst_caps_ref (caps);
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vdp_pad->yuv_output = FALSE;
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} else
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return FALSE;
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gst_vdp_buffer_pool_set_caps (vdp_pad->bpool, video_caps);
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gst_caps_unref (video_caps);
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return TRUE;
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}
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static GstCaps *
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gst_vdp_video_src_pad_getcaps (GstPad * pad)
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{
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GstVdpVideoSrcPad *vdp_pad = (GstVdpVideoSrcPad *) pad;
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const GstCaps *templ_caps;
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if (vdp_pad->caps)
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return gst_caps_ref (vdp_pad->caps);
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else if ((templ_caps = gst_pad_get_pad_template_caps (pad)))
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return gst_caps_copy (templ_caps);
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return NULL;
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}
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static gboolean
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gst_vdp_video_src_pad_activate_push (GstPad * pad, gboolean active)
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{
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GstVdpVideoSrcPad *vdp_pad = (GstVdpVideoSrcPad *) pad;
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if (!active) {
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if (vdp_pad->caps)
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gst_caps_unref (vdp_pad->caps);
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vdp_pad->caps = NULL;
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if (vdp_pad->device)
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gst_object_unref (vdp_pad->device);
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vdp_pad->device = NULL;
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}
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return TRUE;
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}
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static void
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gst_vdp_video_src_pad_set_device (GstVdpVideoSrcPad * vdp_pad,
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GstVdpDevice * device)
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{
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GstCaps *caps;
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const GstCaps *templ_caps;
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if (vdp_pad->bpool)
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g_object_unref (vdp_pad->bpool);
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if (vdp_pad->device)
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g_object_unref (vdp_pad->device);
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vdp_pad->device = device;
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vdp_pad->bpool = gst_vdp_video_buffer_pool_new (device);
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/* update caps */
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if (vdp_pad->caps)
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gst_caps_unref (vdp_pad->caps);
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caps = gst_vdp_video_buffer_get_allowed_caps (device);
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if ((templ_caps = gst_pad_get_pad_template_caps (GST_PAD (vdp_pad)))) {
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vdp_pad->caps = gst_caps_intersect (caps, templ_caps);
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gst_caps_unref (caps);
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} else
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vdp_pad->caps = caps;
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}
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static void
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gst_vdp_video_src_pad_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstVdpVideoSrcPad *vdp_pad = (GstVdpVideoSrcPad *) object;
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switch (prop_id) {
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case PROP_DEVICE:
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g_value_set_object (value, vdp_pad->device);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_vdp_video_src_pad_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstVdpVideoSrcPad *vdp_pad = (GstVdpVideoSrcPad *) object;
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switch (prop_id) {
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case PROP_DEVICE:
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gst_vdp_video_src_pad_set_device (vdp_pad, g_value_dup_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_vdp_video_src_pad_init (GstVdpVideoSrcPad * vdp_pad)
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{
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GstPad *pad = GST_PAD (vdp_pad);
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vdp_pad->device = NULL;
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vdp_pad->caps = NULL;
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gst_pad_set_getcaps_function (pad,
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GST_DEBUG_FUNCPTR (gst_vdp_video_src_pad_getcaps));
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gst_pad_set_setcaps_function (pad,
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GST_DEBUG_FUNCPTR (gst_vdp_video_src_pad_setcaps));
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gst_pad_set_activatepush_function (pad,
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GST_DEBUG_FUNCPTR (gst_vdp_video_src_pad_activate_push));
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}
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static void
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gst_vdp_video_src_pad_class_init (GstVdpVideoSrcPadClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->get_property = gst_vdp_video_src_pad_get_property;
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object_class->set_property = gst_vdp_video_src_pad_set_property;
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/**
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* GstVdpVideoSrcPad:device:
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*
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* The #GstVdpDevice this pool is bound to.
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*/
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g_object_class_install_property
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(object_class,
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PROP_DEVICE,
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g_param_spec_object ("device",
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"Device",
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"The GstVdpDevice the pad should use",
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GST_TYPE_VDP_DEVICE, G_PARAM_READWRITE));
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}
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