[FFmpeg-devel] [PATCH] avdevice/avfoundation: add scaleFactor attribute for avfoundation

[Steven Liu]

2017-07-28 15:55 GMT+08:00 sharpbai <sharpbai at gmail.com>:
> From: sharpbai <tian.bai at duobei.com>
>
> feature: add scaleFactor attribute for avfoundation
> added by: siyuan.wang at duobei.com
> added by: yiren.li at duobei.com
> ---
>  libavdevice/avfoundation.m | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/libavdevice/avfoundation.m b/libavdevice/avfoundation.m
> index e2ddf47..22cff1f 100644
> --- a/libavdevice/avfoundation.m
> +++ b/libavdevice/avfoundation.m
> @@ -96,6 +96,7 @@ typedef struct
>
>      int             capture_cursor;
>      int             capture_mouse_clicks;
> +    float           scaleFactor;
>
>      int             list_devices;
>      int             video_device_index;
> @@ -748,6 +749,9 @@ static int avf_read_header(AVFormatContext *s)
>              } else {
>                  capture_screen_input.capturesMouseClicks = NO;
>              }
> +            if (ctx->scaleFactor != 1 && ctx->scaleFactor > 0) {
> +                capture_screen_input.scaleFactor = ctx->scaleFactor;
> +            }
>
>              video_device = (AVCaptureDevice*) capture_screen_input;
>              capture_screen = 1;
> @@ -1025,6 +1029,7 @@ static const AVOption options[] = {
>      { "video_size", "set video size", offsetof(AVFContext, width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, AV_OPT_FLAG_DECODING_PARAM },
>      { "capture_cursor", "capture the screen cursor", offsetof(AVFContext, capture_cursor), AV_OPT_TYPE_INT, {.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_INT, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
> +    { "scaleFactor", "scale screen factor range", offsetof(AVFContext, scaleFactor), AV_OPT_TYPE_FLOAT, {.i64=1}, 0, 2, AV_OPT_FLAG_DECODING_PARAM },
>
>      { NULL },
>  };
> --
> 2.2.1
>
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Add the option into document please.