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snappy: Refactor so ff_snappy_uncompress() uses an existing buffer

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Some uses of Snappy require uncompressing to positions within
an existing buffer. Also adds a function to get the uncompressed
length of Snappy data.
This commit is contained in:
Tom Butterworth
2015-07-21 01:21:38 +01:00
committed by Vittorio Giovara
parent 7f388c0fab
commit 083cbc930d
3 changed files with 37 additions and 13 deletions
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libavcodec/hapdec.c
+6 -1
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@@ -108,8 +108,13 @@ static int setup_texture(AVCodecContext *avctx, size_t length)
compressorstr = "none";
break;
case HAP_COMP_SNAPPY:
snappy_size = ff_snappy_peek_uncompressed_length(gbc);
ret = av_reallocp(&ctx->snappied, snappy_size);
if (ret < 0) {
return ret;
}
/* Uncompress the frame */
ret = ff_snappy_uncompress(gbc, &ctx->snappied, &snappy_size);
ret = ff_snappy_uncompress(gbc, ctx->snappied, &snappy_size);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Snappy uncompress error\n");
return ret;