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mac-vth264: Use float for expected frame rate

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The encoder property kVTCompressionPropertyKey_ExpectedFrameRate is a
hint to the video encoder. Since frame rates can be fractional, let's
use a float here instead of an int.
This commit is contained in:
Ryan Foster
2022-01-28 09:25:18 -05:00
committed by Jim
parent 63eb2d1c31
commit 6360b2e425
1 changed files with 12 additions and 2 deletions
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14
plugins/mac-vth264/encoder.c
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@@ -108,6 +108,16 @@ static CFStringRef obs_to_vt_colorspace(enum video_colorspace cs)
if ((code = (x)) != noErr) \
return code;
static OSStatus session_set_prop_float(VTCompressionSessionRef session,
CFStringRef key, float val)
{
CFNumberRef n = CFNumberCreate(NULL, kCFNumberFloat32Type, &val);
OSStatus code = VTSessionSetProperty(session, key, n);
CFRelease(n);
return code;
}
static OSStatus session_set_prop_int(VTCompressionSessionRef session,
CFStringRef key, int32_t val)
{
@@ -300,9 +310,9 @@ static bool create_encoder(struct vt_h264_encoder *enc)
STATUS_CHECK(session_set_prop_int(
s, kVTCompressionPropertyKey_MaxKeyFrameInterval,
enc->keyint * ((float)enc->fps_num / enc->fps_den)));
STATUS_CHECK(session_set_prop_int(
STATUS_CHECK(session_set_prop_float(
s, kVTCompressionPropertyKey_ExpectedFrameRate,
ceil((float)enc->fps_num / enc->fps_den)));
(float)enc->fps_num / enc->fps_den));
STATUS_CHECK(session_set_prop(
s, kVTCompressionPropertyKey_AllowFrameReordering,
enc->bframes ? kCFBooleanTrue : kCFBooleanFalse));