[FFmpeg-cvslog] hap: Add utility functions file
Vittorio Giovara
git at videolan.org
Tue Jul 28 00:12:40 CEST 2015
ffmpeg | branch: master | Vittorio Giovara <vittorio.giovara at gmail.com> | Mon Jul 27 16:20:29 2015 +0100| [aaf937ee3557bfb99c2ad298591b22a7f22ecbf7] | committer: Vittorio Giovara
hap: Add utility functions file
Missing from the push of 3ee217853a6741b829a2683f49c590618891b1ab.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=aaf937ee3557bfb99c2ad298591b22a7f22ecbf7
---
libavcodec/hap.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git a/libavcodec/hap.c b/libavcodec/hap.c
new file mode 100644
index 0000000..770142c
--- /dev/null
+++ b/libavcodec/hap.c
@@ -0,0 +1,55 @@
+/*
+ * Vidvox Hap utility functions
+ * Copyright (C) 2015 Tom Butterworth <bangnoise at 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);
+}
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