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Builds out the full v1 scope: a vendored+patched openscreen subset for low-latency Cast Streaming (Mirroring receiver 0F5096E8) alongside the existing Cast V2/HLS and new DLNA/AVTransport casting paths, breadcastd's Idle/Casting state machine with a private IPC socket, the breadcast GTK4 popup as a thin IPC client, and bread.cast.*/bread.command.cast.* breadd integration (device discovery, start/stop, mirroring lifecycle events). Also adds bakery/systemd/Forgejo CI packaging. Validated end-to-end against a real Chromecast/Google TV: negotiated Cast Streaming session, live pipeline playback, and daemon+GUI click-to-cast/ stop through the actual popup.
67 lines
2 KiB
C++
67 lines
2 KiB
C++
// Copyright 2021 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// Resolutions and dimensions (resolutions with a frame rate) are used
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// extensively throughout cast streaming. Since their serialization to and
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// from JSON is stable and standard, we have a single place definition for
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// these for use both in our public APIs and private messages.
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#ifndef CAST_STREAMING_RESOLUTION_H_
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#define CAST_STREAMING_RESOLUTION_H_
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#include "json/value.h"
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#include "util/simple_fraction.h"
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namespace openscreen::cast {
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// A resolution in pixels.
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struct Resolution {
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static ErrorOr<Resolution> TryParse(const Json::Value& value);
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bool IsValid() const;
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Json::Value ToJson() const;
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// Returns true if both `width` and `height` of this instance are greater than
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// or equal to that of `other`.
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bool IsSupersetOf(const Resolution& other) const;
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bool operator==(const Resolution& other) const;
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bool operator!=(const Resolution& other) const;
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// Width and height in pixels.
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int width = 0;
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int height = 0;
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};
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// A resolution in pixels and a frame rate.
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struct Dimensions {
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static ErrorOr<Dimensions> TryParse(const Json::Value& value);
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bool IsValid() const;
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Json::Value ToJson() const;
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// Returns true if all properties of this instance are greater than or equal
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// to those of `other`.
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bool IsSupersetOf(const Dimensions& other) const;
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bool operator==(const Dimensions& other) const;
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bool operator!=(const Dimensions& other) const;
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// Get just the width and height fields (for comparisons).
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constexpr Resolution ToResolution() const { return {width, height}; }
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// The effective bit rate is the width * height * frame rate.
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constexpr int effective_bit_rate() const {
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return width * height * static_cast<double>(frame_rate);
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}
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// Width and height in pixels.
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int width = 0;
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int height = 0;
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// `frame_rate` is the maximum maintainable frame rate.
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SimpleFraction frame_rate{0, 1};
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};
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} // namespace openscreen::cast
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#endif // CAST_STREAMING_RESOLUTION_H_
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