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* making it possible to override aspect ratio from the command line

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Originally committed as revision 1828 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Roman Shaposhnik 2003-04-29 19:46:08 +00:00
parent 880e8ba730
commit 5fe03e3837
1 changed files with 24 additions and 0 deletions
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ffmpeg.c
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@ -1685,6 +1685,29 @@ static void opt_frame_size(const char *arg)
}
}
static void opt_frame_aspect_ratio(const char *arg)
{
int x = 0, y = 0;
double ar = 0;
const char *p;
p = strchr(arg, ':');
if (p) {
x = strtol(arg, (char **)&arg, 10);
if (arg == p)
y = strtol(arg+1, (char **)&arg, 10);
if (x > 0 && y > 0)
ar = (double)x / (double)y;
} else
ar = strtod(arg, (char **)&arg);
if (!ar) {
fprintf(stderr, "Incorrect aspect ratio specification.\n");
exit(1);
}
frame_aspect_ratio = ar;
}
static void opt_gop_size(const char *arg)
{
gop_size = atoi(arg);
@ -2677,6 +2700,7 @@ const OptionDef options[] = {
{ "r", HAS_ARG, {(void*)opt_frame_rate}, "set frame rate (in Hz)", "rate" },
{ "re", OPT_BOOL|OPT_EXPERT, {(void*)&rate_emu}, "read input at native frame rate" },
{ "s", HAS_ARG, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
{ "aspect", HAS_ARG, {(void*)opt_frame_aspect_ratio}, "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
{ "croptop", HAS_ARG, {(void*)opt_frame_crop_top}, "set top crop band size (in pixels)", "size" },
{ "cropbottom", HAS_ARG, {(void*)opt_frame_crop_bottom}, "set bottom crop band size (in pixels)", "size" },
{ "cropleft", HAS_ARG, {(void*)opt_frame_crop_left}, "set left crop band size (in pixels)", "size" },