Collaboration diagram for video::SDIInput:
Public Types | |
| enum | InterlacedBehaviour { DO_NOTHING_SPECIAL, DROP_ONE_FIELD, STACK_FIELDS, SPLIT_LINE_INTERLEAVED_STEREO } |
Public Member Functions | |
| SDIInput (SDIDevice *dev, InterlacedBehaviour interlaced=DO_NOTHING_SPECIAL, int ringbuffersize=0) | |
| Initialises SDI capture into texture memory. More... | |
| ~SDIInput () | |
| int | get_current_ringbuffer_slot () const |
| Returns the most up-to-date index into the ring buffer. More... | |
| int | get_texture_id (int streamno, int ringbufferslot=-1) const |
| Returns the texture ID for a specific ring buffer slot, or for the current slot. The texture has always RGBA format, and dimensions reported by get_width()/get_height(). More... | |
| FrameInfo | capture () |
| Transfers one set of frames over all streams into texture objects. More... | |
| bool | has_frame () const |
| void | set_log_filename (const std::string &fn) |
| void | flush_log () |
Actual video dimensions. | |
These may be different from the reported capture format if we are dropping a field, for example. | |
| int | get_width () const |
| Returns the width in pixels of the texture object that receives video data. More... | |
| int | get_height () const |
| Returns the height in pixels of the texture object that receives video data. More... | |
Protected Attributes | |
| SDIInputImpl * | pimpl |
| bool | preparetextures |
| std::string | logfilename |
Member Enumeration Documentation
Constructor & Destructor Documentation
| video::SDIInput::SDIInput | ( | SDIDevice * | dev, |
| InterlacedBehaviour | interlaced = DO_NOTHING_SPECIAL, |
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| int | ringbuffersize = 0 |
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| ) |
Initialises SDI capture into texture memory.
- Parameters
-
dev the device on which to capture interlaced what to do with interlaced video, ignored of format is progressive ringbuffersize how may slots to allocate in the texture ringbuffer
- Exceptions
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std::runtime_error if anything goes wrong with setup std::logic_error if you passed in the wrong parameters
| video::SDIInput::~SDIInput | ( | ) |
Member Function Documentation
| FrameInfo video::SDIInput::capture | ( | ) |
Transfers one set of frames over all streams into texture objects.
- Exceptions
-
std::runtime_error if capture setup has become invalid
- Postcondition
- Texture binding on the currently active unit will have changed This method will actively try to prevent the system from entering any power-savings mode!
| void video::SDIInput::flush_log | ( | ) |
| int video::SDIInput::get_current_ringbuffer_slot | ( | ) | const |
Returns the most up-to-date index into the ring buffer.
| int video::SDIInput::get_height | ( | ) | const |
Returns the height in pixels of the texture object that receives video data.
Returns the texture ID for a specific ring buffer slot, or for the current slot. The texture has always RGBA format, and dimensions reported by get_width()/get_height().
- Parameters
-
streamno the index of the stream, counting from zero ringbufferslot a specific ringbuffer slot, otherwise the currently active slot
- Exceptions
-
nothing should not throw
- Returns
- The OpenGL object name (i.e. ID) of the requested texture map; or zero if there is none for the requested stream.
| int video::SDIInput::get_width | ( | ) | const |
Returns the width in pixels of the texture object that receives video data.
| bool video::SDIInput::has_frame | ( | ) | const |
- Warning
- Caveat: this will not throw if the capture state has become invalid, it will simply continue returning false! So if too much time has passed since last frame you may want to call capture() anyway to see whether there still is anything connected.
| void video::SDIInput::set_log_filename | ( | const std::string & | fn | ) |
Member Data Documentation
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The documentation for this class was generated from the following files:
