From 9f63810491682b7a600590dbcdc39e6a2246fd97 Mon Sep 17 00:00:00 2001 From: Tobias Bindhammer Date: Wed, 25 Aug 2010 11:47:47 +0000 Subject: added/extended some comments in a64multi_encode_frame() Originally committed as revision 24913 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/a64multienc.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'libavcodec/a64multienc.c') diff --git a/libavcodec/a64multienc.c b/libavcodec/a64multienc.c index 9deab93ff2..1b281ec5f2 100644 --- a/libavcodec/a64multienc.c +++ b/libavcodec/a64multienc.c @@ -283,28 +283,35 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf, req_size = 0; + /* copy charset to buf */ //XXX this all should maybe move to the muxer? as well as teh chunked/not chunked thing? /* either write charset as a whole (more comfy when playing from mem) */ /* copy charset chunk if exists */ if(c->mc_lifetime) { memcpy(buf,charset,0x800*(INTERLACED+1)); + + /* advance pointers */ buf += 0x800*(INTERLACED+1); charset += 0x800*(INTERLACED+1); req_size += 0x800*(INTERLACED+1); } + /* no charset so clean buf */ else memset(buf,0,0x800*(INTERLACED+1)); /* write x frames to buf */ for (frame = 0; frame < c->mc_lifetime; frame++) { - /* buf is uchar*, charmap is int*, so no memcpy here, sorry */ + /* copy charmap to buf. buf is uchar*, charmap is int*, so no memcpy here, sorry */ for (a = 0; a < 1000; a++) { buf[a] = charmap[a]; } + /* advance pointers */ buf += 0x400; req_size += 0x400; + /* compress and copy colram to buf */ if(c->mc_use_5col) { a64_compress_colram(buf,charmap,colram); + /* advance pointers */ buf += 0x100; req_size += 0x100; } -- cgit v1.2.3