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https://github.com/FFmpeg/FFmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/*
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* Vidvox Hap utility functions
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* Copyright (C) 2015 Tom Butterworth <bangnoise@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Hap utilities
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*/
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#include "libavutil/mem.h"
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#include "hap.h"
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int ff_hap_set_chunk_count(HapContext *ctx, int count, int first_in_frame)
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{
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int ret = 0;
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if (first_in_frame == 1 && ctx->chunk_count != count) {
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int ret = av_reallocp_array(&ctx->chunks, count, sizeof(HapChunk));
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if (ret == 0)
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ret = av_reallocp_array(&ctx->chunk_results, count, sizeof(int));
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if (ret < 0) {
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ctx->chunk_count = 0;
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} else {
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ctx->chunk_count = count;
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}
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} else if (ctx->chunk_count != count) {
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/* If this is not the first chunk count calculated for a frame and a
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* different count has already been encountered, then reject the frame:
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* each table in the Decode Instructions Container must describe the
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* same number of chunks. */
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ret = AVERROR_INVALIDDATA;
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}
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return ret;
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}
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av_cold void ff_hap_free_context(HapContext *ctx)
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{
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av_freep(&ctx->tex_buf);
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av_freep(&ctx->chunks);
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av_freep(&ctx->chunk_results);
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}
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int ff_hap_parse_section_header(GetByteContext *gbc, int *section_size,
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enum HapSectionType *section_type)
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{
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if (bytestream2_get_bytes_left(gbc) < 4)
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return AVERROR_INVALIDDATA;
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*section_size = bytestream2_get_le24(gbc);
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*section_type = bytestream2_get_byte(gbc);
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if (*section_size == 0) {
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if (bytestream2_get_bytes_left(gbc) < 4)
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return AVERROR_INVALIDDATA;
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*section_size = bytestream2_get_le32(gbc);
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}
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if (*section_size > bytestream2_get_bytes_left(gbc) || *section_size < 0)
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return AVERROR_INVALIDDATA;
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else
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return 0;
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}
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