Team2890/allwpilib
4
0
Fork 0
mirror of https://github.com/wpilibsuite/allwpilib synced 2026-06-21 01:01:43 +00:00
Code Issues Packages Projects Releases Wiki Activity

MjpegServer: Add ability to set compression, etc in code (#1229)

Browse Source 
This allows code to set the stream compression, resolution, and FPS used if
not specified in HTTP parameters by the client.
This commit is contained in:
Peter Johnson
2018-07-27 23:00:15 -07:00
committed by GitHub
parent 9398278250
commit 932308b497
6 changed files with 160 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
cscore/src/main/native/include/cscore_oo.h
View File

@@ -567,6 +567,43 @@ class MjpegServer : public VideoSink {
/// Get the port number of the server.
int GetPort() const;
/// Set the stream resolution for clients that don't specify it.
///
/// It is not necessary to set this if it is the same as the source
/// resolution.
///
/// Setting this different than the source resolution will result in
/// increased CPU usage, particularly for MJPEG source cameras, as it will
/// decompress, resize, and recompress the image, instead of using the
/// camera's MJPEG image directly.
///
/// @param width width, 0 for unspecified
/// @param height height, 0 for unspecified
void SetResolution(int width, int height);
/// Set the stream frames per second (FPS) for clients that don't specify it.
///
/// It is not necessary to set this if it is the same as the source FPS.
///
/// @param fps FPS, 0 for unspecified
void SetFPS(int fps);
/// Set the compression for clients that don't specify it.
///
/// Setting this will result in increased CPU usage for MJPEG source cameras
/// as it will decompress and recompress the image instead of using the
/// camera's MJPEG image directly.
///
/// @param quality JPEG compression quality (0-100), -1 for unspecified
void SetCompression(int quality);
/// Set the default compression used for non-MJPEG sources. If not set,
/// 80 is used. This function has no effect on MJPEG source cameras; use
/// SetCompression() instead to force recompression of MJPEG source images.
///
/// @param quality JPEG compression quality (0-100)
void SetDefaultCompression(int quality);
};
/// A sink for user code to accept video frames as OpenCV images.

24
cscore/src/main/native/include/cscore_oo.inl
View File

@@ -498,6 +498,30 @@ inline int MjpegServer::GetPort() const {
return cs::GetMjpegServerPort(m_handle, &m_status);
}
inline void MjpegServer::SetResolution(int width, int height) {
m_status = 0;
SetProperty(GetSinkProperty(m_handle, "width", &m_status), width, &m_status);
SetProperty(GetSinkProperty(m_handle, "height", &m_status), height,
&m_status);
}
inline void MjpegServer::SetFPS(int fps) {
m_status = 0;
SetProperty(GetSinkProperty(m_handle, "fps", &m_status), fps, &m_status);
}
inline void MjpegServer::SetCompression(int quality) {
m_status = 0;
SetProperty(GetSinkProperty(m_handle, "compression", &m_status), quality,
&m_status);
}
inline void MjpegServer::SetDefaultCompression(int quality) {
m_status = 0;
SetProperty(GetSinkProperty(m_handle, "default_compression", &m_status),
quality, &m_status);
}
inline CvSink::CvSink(wpi::StringRef name) {
m_handle = CreateCvSink(name, &m_status);
}