PIXEL_FORMAT_MAX,
};
+// Policies for capture devices that has source content with dynamic resolution.
+enum ResolutionChangePolicy {
+ // Capture device outputs a fixed resolution all the time. The resolution of
+ // the first frame is the resolution for all frames.
+ // It is implementation specific for the capture device to scale, letter-box
+ // and pillar-box. The only gurantee is that resolution will never change.
+ RESOLUTION_POLICY_FIXED,
+
+ // Capture device outputs frames with dynamic resolution. The width and height
+ // will not exceed the maximum dimensions specified. The typical scenario is
+ // the frames will have the same aspect ratio as the original content and
+ // scaled down to fit inside the limit.
+ RESOLUTION_POLICY_DYNAMIC_WITHIN_LIMIT,
+
+ RESOLUTION_POLICY_LAST,
+};
+
// Some drivers use rational time per frame instead of float frame rate, this
// constant k is used to convert between both: A fps -> [k/k*A] seconds/frame.
const int kFrameRatePrecision = 10000;
float frame_rate,
VideoPixelFormat pixel_format);
+ std::string ToString() const;
static std::string PixelFormatToString(VideoPixelFormat format);
// Checks that all values are in the expected range. All limits are specified
// Requests a resolution and format at which the capture will occur.
VideoCaptureFormat requested_format;
- // Allow mid-capture resolution change.
- bool allow_resolution_change;
+ // Policy for resolution change.
+ ResolutionChangePolicy resolution_change_policy;
};
} // namespace media