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Avoid using sscanf for basic parsing, it is horribly slow.

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Now uses strncmp as a first step, which is 40 times faster.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@30576 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2010-02-14 13:57:30 +00:00
parent 68219deebf
commit 56e0f7fe9e
1 changed files with 9 additions and 4 deletions
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13
spudec.c
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@ -1161,9 +1161,13 @@ static void spudec_parse_extradata(spudec_handle_t *this,
buffer[extradata_len] = 0;
do {
sscanf(ptr, "size: %dx%d", &this->orig_frame_width, &this->orig_frame_height);
if (sscanf(ptr, "palette: %x, %x, %x, %x, %x, %x, %x, %x,"
" %x, %x, %x, %x, %x, %x, %x, %x",
if (*ptr == '#')
continue;
if (!strncmp(ptr, "size: ", 6))
sscanf(ptr + 6, "%dx%d", &this->orig_frame_width, &this->orig_frame_height);
if (!strncmp(ptr, "palette: ", 9) &&
sscanf(ptr + 9, "%x, %x, %x, %x, %x, %x, %x, %x, "
"%x, %x, %x, %x, %x, %x, %x, %x",
&pal[ 0], &pal[ 1], &pal[ 2], &pal[ 3],
&pal[ 4], &pal[ 5], &pal[ 6], &pal[ 7],
&pal[ 8], &pal[ 9], &pal[10], &pal[11],
@ -1174,7 +1178,8 @@ static void spudec_parse_extradata(spudec_handle_t *this,
}
if (!strncasecmp(ptr, "forced subs: on", 15))
this->forced_subs_only = 1;
if (sscanf(ptr, "custom colors: ON, tridx: %x, colors: %x, %x, %x, %x",
if (!strncmp(ptr, "custom colors: ON, tridx: ", 26) &&
sscanf(ptr + 26, "%x, colors: %x, %x, %x, %x",
&tridx, cuspal+0, cuspal+1, cuspal+2, cuspal+3) == 5) {
for (i=0; i<4; i++) {
cuspal[i] = vobsub_rgb_to_yuv(cuspal[i]);