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67eea92044
Drop obsolete GST_VAAPI_IS_xxx() helper macros since we are no longer deriving from GObject and so those were only checking for whether the argument was NULL or not. This is now irrelevant, and even confusing to some extent, because we no longer have type checking. Note: this incurs more type checking (review) but the libgstvaapi is rather small, so this is manageable.
390 lines
11 KiB
C
390 lines
11 KiB
C
/*
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* gstvaapisubpicture.c - VA subpicture abstraction
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*
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* Copyright (C) 2010-2011 Splitted-Desktop Systems
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* Copyright (C) 2011-2013 Intel Corporation
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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 Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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/**
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* SECTION:gstvaapisubpicture
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* @short_description: VA subpicture abstraction
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*/
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#include "sysdeps.h"
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#include <string.h>
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#include "gstvaapicompat.h"
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#include "gstvaapiutils.h"
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#include "gstvaapisubpicture.h"
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#include "gstvaapiobject_priv.h"
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#define DEBUG 1
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#include "gstvaapidebug.h"
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typedef struct _GstVaapiSubpictureClass GstVaapiSubpictureClass;
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/**
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* GstVaapiSubpicture:
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*
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* A VA subpicture wrapper
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*/
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struct _GstVaapiSubpicture {
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/*< private >*/
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GstVaapiObject parent_instance;
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GstVaapiImage *image;
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guint flags;
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gfloat global_alpha;
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};
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/**
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* GstVaapiSubpictureClass:
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*
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* A VA subpicture wrapper class
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*/
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struct _GstVaapiSubpictureClass {
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/*< private >*/
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GstVaapiObjectClass parent_class;
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};
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static void
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gst_vaapi_subpicture_destroy(GstVaapiSubpicture *subpicture)
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{
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GstVaapiDisplay * const display = GST_VAAPI_OBJECT_DISPLAY(subpicture);
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VASubpictureID subpicture_id;
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VAStatus status;
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subpicture_id = GST_VAAPI_OBJECT_ID(subpicture);
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GST_DEBUG("subpicture %" GST_VAAPI_ID_FORMAT,
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GST_VAAPI_ID_ARGS(subpicture_id));
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if (subpicture_id != VA_INVALID_ID) {
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if (display) {
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GST_VAAPI_DISPLAY_LOCK(display);
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status = vaDestroySubpicture(
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GST_VAAPI_DISPLAY_VADISPLAY(display),
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subpicture_id
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);
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GST_VAAPI_DISPLAY_UNLOCK(display);
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if (!vaapi_check_status(status, "vaDestroySubpicture()"))
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g_warning("failed to destroy subpicture %" GST_VAAPI_ID_FORMAT,
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GST_VAAPI_ID_ARGS(subpicture_id));
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}
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GST_VAAPI_OBJECT_ID(subpicture) = VA_INVALID_ID;
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}
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gst_vaapi_object_replace(&subpicture->image, NULL);
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}
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static gboolean
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gst_vaapi_subpicture_create(GstVaapiSubpicture *subpicture,
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GstVaapiImage *image)
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{
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GstVaapiDisplay * const display = GST_VAAPI_OBJECT_DISPLAY(subpicture);
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VASubpictureID subpicture_id;
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VAStatus status;
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GST_VAAPI_DISPLAY_LOCK(display);
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status = vaCreateSubpicture(
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GST_VAAPI_DISPLAY_VADISPLAY(display),
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GST_VAAPI_OBJECT_ID(image),
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&subpicture_id
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);
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GST_VAAPI_DISPLAY_UNLOCK(display);
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if (!vaapi_check_status(status, "vaCreateSubpicture()"))
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return FALSE;
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GST_DEBUG("subpicture %" GST_VAAPI_ID_FORMAT,
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GST_VAAPI_ID_ARGS(subpicture_id));
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GST_VAAPI_OBJECT_ID(subpicture) = subpicture_id;
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subpicture->image = gst_vaapi_object_ref(image);
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return TRUE;
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}
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#define gst_vaapi_subpicture_finalize gst_vaapi_subpicture_destroy
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GST_VAAPI_OBJECT_DEFINE_CLASS(GstVaapiSubpicture, gst_vaapi_subpicture)
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/**
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* gst_vaapi_subpicture_new:
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* @image: a #GstVaapiImage
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* @flags: #GstVaapiSubpictureFlags, or zero
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*
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* Creates a new #GstVaapiSubpicture with @image as source pixels. The
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* newly created object holds a reference on @image.
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*
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* Return value: the newly allocated #GstVaapiSubpicture object
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*/
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GstVaapiSubpicture *
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gst_vaapi_subpicture_new(GstVaapiImage *image, guint flags)
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{
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GstVaapiSubpicture *subpicture;
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GstVaapiDisplay *display;
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GstVaapiImageFormat format;
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guint va_flags;
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g_return_val_if_fail(image != NULL, NULL);
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GST_DEBUG("create from image %" GST_VAAPI_ID_FORMAT,
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GST_VAAPI_ID_ARGS(GST_VAAPI_OBJECT_ID(image)));
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display = GST_VAAPI_OBJECT_DISPLAY(image);
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format = gst_vaapi_image_get_format(image);
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if (!gst_vaapi_display_has_subpicture_format(display, format, &va_flags))
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return NULL;
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if (flags & ~va_flags)
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return NULL;
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subpicture = gst_vaapi_object_new(gst_vaapi_subpicture_class(), display);
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if (!subpicture)
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return NULL;
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subpicture->global_alpha = 1.0f;
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if (!gst_vaapi_subpicture_set_image(subpicture, image))
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goto error;
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return subpicture;
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error:
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gst_vaapi_object_unref(subpicture);
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return NULL;
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}
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/**
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* gst_vaapi_subpicture_new_from_overlay_rectangle:
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* @display: a #GstVaapiDisplay
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* @rect: a #GstVideoOverlayRectangle
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*
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* Helper function that creates a new #GstVaapiSubpicture from a
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* #GstVideoOverlayRectangle. A new #GstVaapiImage is also created
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* along the way and attached to the resulting subpicture. The
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* subpicture holds a unique reference to the underlying image.
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*
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* Return value: the newly allocated #GstVaapiSubpicture object
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*/
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GstVaapiSubpicture *
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gst_vaapi_subpicture_new_from_overlay_rectangle(
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GstVaapiDisplay *display,
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GstVideoOverlayRectangle *rect
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)
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{
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GstVaapiSubpicture *subpicture;
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GstVaapiImageFormat format;
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GstVaapiImage *image;
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GstVaapiImageRaw raw_image;
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GstBuffer *buffer;
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guint8 *data;
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gfloat global_alpha;
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guint width, height, stride;
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guint hw_flags, flags;
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#if GST_CHECK_VERSION(1,0,0)
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GstVideoMeta *vmeta;
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GstMapInfo map_info;
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#endif
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g_return_val_if_fail(GST_IS_VIDEO_OVERLAY_RECTANGLE(rect), NULL);
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/* XXX: use gst_vaapi_image_format_from_video() */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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format = GST_VAAPI_IMAGE_BGRA;
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#else
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format = GST_VAAPI_IMAGE_ARGB;
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#endif
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if (!gst_vaapi_display_has_subpicture_format(display, format, &hw_flags))
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return NULL;
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flags = hw_flags & from_GstVideoOverlayFormatFlags(
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gst_video_overlay_rectangle_get_flags(rect));
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#if GST_CHECK_VERSION(1,0,0)
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buffer = gst_video_overlay_rectangle_get_pixels_unscaled_argb(rect,
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to_GstVideoOverlayFormatFlags(flags));
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if (!buffer)
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return NULL;
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vmeta = gst_buffer_get_video_meta(buffer);
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if (!vmeta)
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return NULL;
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width = vmeta->width;
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height = vmeta->height;
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if (!gst_video_meta_map(vmeta, 0, &map_info, (gpointer *)&data,
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(gint *)&stride, GST_MAP_READ))
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return NULL;
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#else
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buffer = (gst_video_overlay_rectangle_get_pixels_unscaled_argb)(rect,
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&width, &height, &stride, to_GstVideoOverlayFormatFlags(flags));
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if (!buffer)
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return NULL;
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data = GST_BUFFER_DATA(buffer);
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#endif
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image = gst_vaapi_image_new(display, format, width, height);
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if (!image)
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return NULL;
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raw_image.format = format;
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raw_image.width = width;
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raw_image.height = height;
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raw_image.num_planes = 1;
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raw_image.pixels[0] = data;
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raw_image.stride[0] = stride;
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if (!gst_vaapi_image_update_from_raw(image, &raw_image, NULL)) {
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GST_WARNING("could not update VA image with subtitle data");
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gst_vaapi_object_unref(image);
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return NULL;
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}
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subpicture = gst_vaapi_subpicture_new(image, flags);
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gst_vaapi_object_unref(image);
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#if GST_CHECK_VERSION(1,0,0)
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gst_video_meta_unmap(vmeta, 0, &map_info);
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#endif
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if (!subpicture)
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return NULL;
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if (flags & GST_VAAPI_SUBPICTURE_FLAG_GLOBAL_ALPHA) {
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global_alpha = gst_video_overlay_rectangle_get_global_alpha(rect);
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if (!gst_vaapi_subpicture_set_global_alpha(subpicture, global_alpha))
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return NULL;
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}
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return subpicture;
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}
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/**
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* gst_vaapi_subpicture_get_id:
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* @subpicture: a #GstVaapiSubpicture
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*
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* Returns the underlying VASubpictureID of the @subpicture.
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*
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* Return value: the underlying VA subpicture id
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*/
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GstVaapiID
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gst_vaapi_subpicture_get_id(GstVaapiSubpicture *subpicture)
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{
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g_return_val_if_fail(subpicture != NULL, VA_INVALID_ID);
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return GST_VAAPI_OBJECT_ID(subpicture);
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}
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/**
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* gst_vaapi_subpicture_get_flags:
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* @subpicture: a #GstVaapiSubpicture
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*
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* Returns the @subpicture flags.
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*
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* Return value: the @subpicture flags
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*/
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guint
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gst_vaapi_subpicture_get_flags(GstVaapiSubpicture *subpicture)
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{
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g_return_val_if_fail(subpicture != NULL, 0);
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return subpicture->flags;
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}
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/**
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* gst_vaapi_subpicture_get_image:
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* @subpicture: a #GstVaapiSubpicture
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*
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* Returns the #GstVaapiImage this @subpicture is bound to.
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*
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* Return value: the #GstVaapiImage this @subpicture is bound to
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*/
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GstVaapiImage *
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gst_vaapi_subpicture_get_image(GstVaapiSubpicture *subpicture)
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{
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g_return_val_if_fail(subpicture != NULL, NULL);
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return subpicture->image;
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}
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/**
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* gst_vaapi_subpicture_set_image:
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* @subpicture: a #GstVaapiSubpicture
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* @image: a #GstVaapiImage
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*
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* Binds a new #GstVaapiImage to the @subpicture. The reference to the
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* previous image is released and a new one is acquired on @image.
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*
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* Return value: %TRUE on success
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*/
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gboolean
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gst_vaapi_subpicture_set_image(GstVaapiSubpicture *subpicture,
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GstVaapiImage *image)
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{
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g_return_val_if_fail(subpicture != NULL, FALSE);
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g_return_val_if_fail(image != NULL, FALSE);
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gst_vaapi_subpicture_destroy(subpicture);
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return gst_vaapi_subpicture_create(subpicture, image);
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}
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/**
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* gst_vaapi_subpicture_get_global_alpha:
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* @subpicture: a #GstVaapiSubpicture
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*
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* Returns the value of global_alpha, set for this @subpicture.
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*
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* Return value: the global_alpha value of this @subpicture
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*/
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gfloat
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gst_vaapi_subpicture_get_global_alpha(GstVaapiSubpicture *subpicture)
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{
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g_return_val_if_fail(subpicture != NULL, 1.0);
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return subpicture->global_alpha;
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}
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/**
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* gst_vaapi_subpicture_set_global_alpha:
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* @subpicture: a #GstVaapiSubpicture
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* @global_alpha: value for global-alpha (range: 0.0 to 1.0, inclusive)
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*
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* Sets the global_alpha value of @subpicture. This function calls
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* vaSetSubpictureGlobalAlpha() if the format of @subpicture, i.e.
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* the current VA driver supports it.
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*
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* Return value: %TRUE if global_alpha could be set, %FALSE otherwise
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*/
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gboolean
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gst_vaapi_subpicture_set_global_alpha(GstVaapiSubpicture *subpicture,
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gfloat global_alpha)
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{
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GstVaapiDisplay *display;
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VAStatus status;
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g_return_val_if_fail(subpicture != NULL, FALSE);
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if (!(subpicture->flags & GST_VAAPI_SUBPICTURE_FLAG_GLOBAL_ALPHA))
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return FALSE;
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if (subpicture->global_alpha == global_alpha)
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return TRUE;
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display = GST_VAAPI_OBJECT_DISPLAY(subpicture);
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GST_VAAPI_DISPLAY_LOCK(display);
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status = vaSetSubpictureGlobalAlpha(
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GST_VAAPI_DISPLAY_VADISPLAY(display),
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GST_VAAPI_OBJECT_ID(subpicture),
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global_alpha
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);
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GST_VAAPI_DISPLAY_UNLOCK(display);
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if (!vaapi_check_status(status, "vaSetSubpictureGlobalAlpha()"))
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return FALSE;
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subpicture->global_alpha = global_alpha;
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return TRUE;
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}
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