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lavd/avfoundation.m: Add an option to drop late frames. 

Retains current behaviour by the default value.
This commit is contained in:
Thilo Borgmann 2020-01-19 17:36:21 +01:00
parent 343ccfcc4d
commit 2ca14d84ee
1 changed files with 3 additions and 1 deletions
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4
libavdevice/avfoundation.m
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@ -98,6 +98,7 @@ typedef struct
int capture_cursor;
int capture_mouse_clicks;
int capture_raw_data;
int drop_late_frames;
int video_is_muxed;
int list_devices;
@ -496,7 +497,7 @@ static int add_video_device(AVFormatContext *s, AVCaptureDevice *video_device)
[ctx->video_output setVideoSettings:capture_dict];
}
[ctx->video_output setAlwaysDiscardsLateVideoFrames:YES];
[ctx->video_output setAlwaysDiscardsLateVideoFrames:ctx->drop_late_frames];
ctx->avf_delegate = [[AVFFrameReceiver alloc] initWithContext:ctx];
@ -1135,6 +1136,7 @@ static const AVOption options[] = {
{ "capture_cursor", "capture the screen cursor", offsetof(AVFContext, capture_cursor), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
{ "capture_mouse_clicks", "capture the screen mouse clicks", offsetof(AVFContext, capture_mouse_clicks), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
{ "capture_raw_data", "capture the raw data from device connection", offsetof(AVFContext, capture_raw_data), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
{ "drop_late_frames", "drop frames that are available later than expected", offsetof(AVFContext, drop_late_frames), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
{ NULL },
};