From dbaae33c2c71862b8eaea978ed6dccc5ec03db89 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 30 Jan 2013 16:39:35 +0100 Subject: [PATCH] msrledec: move loop into switch speeds up code and allows more simplifications Signed-off-by: Michael Niedermayer --- libavcodec/msrledec.c | 37 +++++++++++++++++++++++-------------- 1 file changed, 23 insertions(+), 14 deletions(-) diff --git a/libavcodec/msrledec.c b/libavcodec/msrledec.c index 6596cecf4c..cc69af8ec1 100644 --- a/libavcodec/msrledec.c +++ b/libavcodec/msrledec.c @@ -218,21 +218,30 @@ static int msrle_decode_8_16_24_32(AVCodecContext *avctx, AVPicture *pic, case 32: pix32 = bytestream2_get_le32(gb); break; } - for(i = 0; i < p1; i++) { - switch(depth){ - case 8: *output++ = pix[0]; - break; - case 16: *(uint16_t*)output = pix16; - output += 2; - break; - case 24: *output++ = pix[0]; - *output++ = pix[1]; - *output++ = pix[2]; - break; - case 32: *(uint32_t*)output = pix32; - output += 4; - break; + switch(depth){ + case 8: + for(i = 0; i < p1; i++) + *output++ = pix[0]; + break; + case 16: + for(i = 0; i < p1; i++) { + *(uint16_t*)output = pix16; + output += 2; } + break; + case 24: + for(i = 0; i < p1; i++) { + *output++ = pix[0]; + *output++ = pix[1]; + *output++ = pix[2]; + } + break; + case 32: + for(i = 0; i < p1; i++) { + *(uint32_t*)output = pix32; + output += 4; + } + break; } pos += p1; }