bicarusandGitHub
0934cce225
## Link to GitHub Issue or related Pull Request, if one exists fixes #875 ## Description of change Adds `-apistream`, an optional HTTP video stream of the mirrored screen. It listens on the API port +2. Two endpoints, sharing the same `screen`, `fps` and `q` parameters: /stream.mjpg JPEG frames, for clients with no container support /stream.h264 H.264 annex-b, for an app driving MediaCodec or VideoToolbox itself One encoder per connection, fed by a per-screen pump that always hands over the newest frame, so a slow reader drops frames instead of building a backlog. `capture.get_jpg` behaviour is unchanged. Additional documentation for developers: https://github.com/spice2x/spice2x.github.io/wiki/Video-Stream ## Testing
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
#pragma once
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#include <cstddef>
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#include <functional>
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#include <memory>
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#include <string>
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#include "capture_pump.h"
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namespace api {
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// writes bytes to the client; false once the connection is gone
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using StreamSend = std::function<bool(const void *, size_t)>;
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// one wire format, instantiated per connection so it can keep encoder state across frames
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class StreamWriter {
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public:
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virtual ~StreamWriter() = default;
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StreamWriter(const StreamWriter &) = delete;
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StreamWriter &operator=(const StreamWriter &) = delete;
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// value for the HTTP Content-Type response header
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virtual std::string content_type() const = 0;
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// for formats that open with an init segment; runs once before any frame
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virtual bool begin(const StreamSend &send) { return true; }
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virtual bool write(const StreamSend &send, const capture_pump::Frame &frame) = 0;
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protected:
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StreamWriter() = default;
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};
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// null when the path does not name a format this build supports
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std::unique_ptr<StreamWriter> make_stream_writer(
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const std::string &path, int quality, int fps);
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}
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