Small memory reduction which uses approx 6/7th total memory.
Assuming \n is 2bytes, we first need {32+33+40+5}=110
but we also need to include the terminating zero => 110+1 = 111 (bug-fix).
Then assuming \n is 2bytes, data requires => height * (linesize * 6 + 2)
For example, " 0x00, 0x11, 0x22,\n"
From 81436261e6de8ddaf1ce3c6f010ab2c018f92eb8 Mon Sep 17 00:00:00 2001
From: Joe Da Silva <digi...@joescat.com>
Date: Sun, 10 Jan 2021 01:35:05 -0800
Subject: [PATCH] avcodec/xbmenc: Better xbm memory use
Small memory reduction which uses approx 6/7th total memory.
Assuming \n is 2bytes, we first need {32+33+40+5}=110
but we also need to include the terminating zero => 110+1 = 111
Assuming \n is 2bytes, data requires => height * (linesize * 6 + 2)
For example, " 0x00, 0x11, 0x22,\n"
Signed-off-by: Joe Da Silva <digi...@joescat.com>
---
libavcodec/xbmenc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/xbmenc.c b/libavcodec/xbmenc.c
index b25615f2a4..9222947893 100644
--- a/libavcodec/xbmenc.c
+++ b/libavcodec/xbmenc.c
@@ -31,7 +31,7 @@ static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
uint8_t *ptr, *buf;
linesize = (avctx->width + 7) / 8;
- size = avctx->height * (linesize * 7 + 2) + 110;
+ size = avctx->height * (linesize * 6 + 2) + 111;
if ((ret = ff_alloc_packet2(avctx, pkt, size, 0)) < 0)
return ret;
--
2.30.0
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