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hap: Add utility functions file

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Missing from the push of 3ee217853a.
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Vittorio Giovara
2015-07-27 16:20:29 +01:00
parent 3ee217853a
commit aaf937ee35
1 changed files with 55 additions and 0 deletions
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libavcodec/hap.c Normal file
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/*
* Vidvox Hap utility functions
* Copyright (C) 2015 Tom Butterworth <bangnoise@gmail.com>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Hap utilities
*/
#include "hap.h"
int ff_hap_set_chunk_count(HapContext *ctx, int count, int first_in_frame)
{
int ret = 0;
if (first_in_frame == 1 && ctx->chunk_count != count) {
int ret = av_reallocp_array(&ctx->chunks, count, sizeof(HapChunk));
if (ret == 0)
ret = av_reallocp_array(&ctx->chunk_results, count, sizeof(int));
if (ret < 0) {
ctx->chunk_count = 0;
} else {
ctx->chunk_count = count;
}
} else if (ctx->chunk_count != count) {
/* If this is not the first chunk count calculated for a frame and a
* different count has already been encountered, then reject the frame:
* each table in the Decode Instructions Container must describe the
* same number of chunks. */
ret = AVERROR_INVALIDDATA;
}
return ret;
}
av_cold void ff_hap_free_context(HapContext *ctx)
{
av_freep(&ctx->tex_buf);
av_freep(&ctx->chunks);
av_freep(&ctx->chunk_results);
}