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150 lines
3.7 KiB
C
150 lines
3.7 KiB
C
/*
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* gstvaapiparser_frame.c - VA parser frame
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*
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* Copyright (C) 2012-2013 Intel Corporation
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* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.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 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:gstvaapiparser_frame
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* @short_description: VA decoder frame
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*/
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#include "sysdeps.h"
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#include "gstvaapiparser_frame.h"
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static inline const GstVaapiMiniObjectClass *
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gst_vaapi_parser_frame_class (void)
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{
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static const GstVaapiMiniObjectClass GstVaapiParserFrameClass = {
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sizeof (GstVaapiParserFrame),
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(GDestroyNotify) gst_vaapi_parser_frame_free
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};
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return &GstVaapiParserFrameClass;
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}
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static inline gboolean
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alloc_units (GArray ** units_ptr, guint size)
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{
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GArray *units;
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units = g_array_sized_new (FALSE, FALSE, sizeof (GstVaapiDecoderUnit), size);
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*units_ptr = units;
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return units != NULL;
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}
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static inline void
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free_units (GArray ** units_ptr)
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{
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GArray *const units = *units_ptr;
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guint i;
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if (units) {
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for (i = 0; i < units->len; i++) {
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GstVaapiDecoderUnit *const unit =
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&g_array_index (units, GstVaapiDecoderUnit, i);
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gst_vaapi_decoder_unit_clear (unit);
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}
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g_array_free (units, TRUE);
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*units_ptr = NULL;
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}
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}
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/**
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* gst_vaapi_parser_frame_new:
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* @width: frame width in pixels
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* @height: frame height in pixels
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*
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* Creates a new #GstVaapiParserFrame object.
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*
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* Returns: The newly allocated #GstVaapiParserFrame
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*/
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GstVaapiParserFrame *
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gst_vaapi_parser_frame_new (guint width, guint height)
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{
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GstVaapiParserFrame *frame;
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guint num_slices;
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frame = (GstVaapiParserFrame *)
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gst_vaapi_mini_object_new (gst_vaapi_parser_frame_class ());
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if (!frame)
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return NULL;
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if (!height)
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height = 1088;
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num_slices = (height + 15) / 16;
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if (!alloc_units (&frame->pre_units, 16))
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goto error;
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if (!alloc_units (&frame->units, num_slices))
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goto error;
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if (!alloc_units (&frame->post_units, 1))
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goto error;
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frame->output_offset = 0;
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return frame;
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/* ERRORS */
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error:
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{
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gst_vaapi_parser_frame_unref (frame);
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return NULL;
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}
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}
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/**
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* gst_vaapi_parser_frame_free:
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* @frame: a #GstVaapiParserFrame
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*
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* Deallocates any internal resources bound to the supplied decoder
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* @frame.
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*
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* @note This is an internal function used to implement lightweight
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* sub-classes.
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*/
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void
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gst_vaapi_parser_frame_free (GstVaapiParserFrame * frame)
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{
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free_units (&frame->units);
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free_units (&frame->pre_units);
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free_units (&frame->post_units);
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}
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/**
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* gst_vaapi_parser_frame_append_unit:
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* @frame: a #GstVaapiParserFrame
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* @unit: a #GstVaapiDecoderUnit
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*
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* Appends unit to the @frame.
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*/
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void
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gst_vaapi_parser_frame_append_unit (GstVaapiParserFrame * frame,
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GstVaapiDecoderUnit * unit)
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{
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GArray **unit_array_ptr;
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unit->offset = frame->output_offset;
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frame->output_offset += unit->size;
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if (GST_VAAPI_DECODER_UNIT_IS_SLICE (unit))
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unit_array_ptr = &frame->units;
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else if (GST_VAAPI_DECODER_UNIT_IS_FRAME_END (unit))
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unit_array_ptr = &frame->post_units;
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else
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unit_array_ptr = &frame->pre_units;
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g_array_append_val (*unit_array_ptr, *unit);
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}
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