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49b370ed60
Since there is duplicated code in h264/265 encoder, we could refactor it to avoid duplicated code. https://bugzilla.gnome.org/show_bug.cgi?id=778750 Signed-off-by: Víctor Manuel Jáquez Leal <victorx.jaquez@intel.com>
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/*
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* gstvaapiutils_h26x.c - H.26x related utilities
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*
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* Copyright (C) 2011-2014 Intel Corporation
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* Author: Gwenole Beauchesne
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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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#include "gstvaapiutils_h26x_priv.h"
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/* Write an unsigned integer Exp-Golomb-coded syntax element. i.e. ue(v) */
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gboolean
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bs_write_ue (GstBitWriter * bs, guint32 value)
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{
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guint32 size_in_bits = 0;
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guint32 tmp_value = ++value;
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while (tmp_value) {
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++size_in_bits;
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tmp_value >>= 1;
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}
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if (size_in_bits > 1
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&& !gst_bit_writer_put_bits_uint32 (bs, 0, size_in_bits - 1))
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return FALSE;
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if (!gst_bit_writer_put_bits_uint32 (bs, value, size_in_bits))
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return FALSE;
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return TRUE;
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}
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/* Write a signed integer Exp-Golomb-coded syntax element. i.e. se(v) */
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gboolean
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bs_write_se (GstBitWriter * bs, gint32 value)
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{
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guint32 new_val;
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if (value <= 0)
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new_val = -(value << 1);
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else
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new_val = (value << 1) - 1;
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if (!bs_write_ue (bs, new_val))
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return FALSE;
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return TRUE;
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}
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