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/*
* gstvaapiparser_frame.c - VA parser frame
*
* Copyright (C) 2012-2013 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:gstvaapiparser_frame
* @short_description: VA decoder frame
*/
#include "sysdeps.h"
#include "gstvaapiparser_frame.h"
static inline const GstVaapiMiniObjectClass *
gst_vaapi_parser_frame_class (void)
{
static const GstVaapiMiniObjectClass GstVaapiParserFrameClass = {
sizeof (GstVaapiParserFrame),
(GDestroyNotify) gst_vaapi_parser_frame_free
};
return &GstVaapiParserFrameClass;
}
static inline gboolean
alloc_units (GArray ** units_ptr, guint size)
{
GArray *units;
units = g_array_sized_new (FALSE, FALSE, sizeof (GstVaapiDecoderUnit), size);
*units_ptr = units;
return units != NULL;
}
static inline void
free_units (GArray ** units_ptr)
{
GArray *const units = *units_ptr;
guint i;
if (units) {
for (i = 0; i < units->len; i++) {
GstVaapiDecoderUnit *const unit =
&g_array_index (units, GstVaapiDecoderUnit, i);
gst_vaapi_decoder_unit_clear (unit);
}
g_array_free (units, TRUE);
*units_ptr = NULL;
}
}
/**
* gst_vaapi_parser_frame_new:
* @width: frame width in pixels
* @height: frame height in pixels
*
* Creates a new #GstVaapiParserFrame object.
*
* Returns: The newly allocated #GstVaapiParserFrame
*/
GstVaapiParserFrame *
gst_vaapi_parser_frame_new (guint width, guint height)
{
GstVaapiParserFrame *frame;
guint num_slices;
frame = (GstVaapiParserFrame *)
gst_vaapi_mini_object_new (gst_vaapi_parser_frame_class ());
if (!frame)
return NULL;
if (!height)
height = 1088;
num_slices = (height + 15) / 16;
if (!alloc_units (&frame->pre_units, 16))
goto error;
if (!alloc_units (&frame->units, num_slices))
goto error;
if (!alloc_units (&frame->post_units, 1))
goto error;
frame->output_offset = 0;
return frame;
/* ERRORS */
error:
{
gst_vaapi_parser_frame_unref (frame);
return NULL;
}
}
/**
* gst_vaapi_parser_frame_free:
* @frame: a #GstVaapiParserFrame
*
* Deallocates any internal resources bound to the supplied decoder
* @frame.
*
* @note This is an internal function used to implement lightweight
* sub-classes.
*/
void
gst_vaapi_parser_frame_free (GstVaapiParserFrame * frame)
{
free_units (&frame->units);
free_units (&frame->pre_units);
free_units (&frame->post_units);
}
/**
* gst_vaapi_parser_frame_append_unit:
* @frame: a #GstVaapiParserFrame
* @unit: a #GstVaapiDecoderUnit
*
* Appends unit to the @frame.
*/
void
gst_vaapi_parser_frame_append_unit (GstVaapiParserFrame * frame,
GstVaapiDecoderUnit * unit)
{
GArray **unit_array_ptr;
unit->offset = frame->output_offset;
frame->output_offset += unit->size;
if (GST_VAAPI_DECODER_UNIT_IS_SLICE (unit))
unit_array_ptr = &frame->units;
else if (GST_VAAPI_DECODER_UNIT_IS_FRAME_END (unit))
unit_array_ptr = &frame->post_units;
else
unit_array_ptr = &frame->pre_units;
g_array_append_val (*unit_array_ptr, *unit);
}
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