Video decoder using FFmpeg/libav with VAAPI. More...
#include <hwdecoder.h>
Inheritance diagram for AVHwDecoder:
Collaboration diagram for AVHwDecoder:
Public Member Functions | |
| AVHwDecoder (AVCodecID av_codec_id, AVHWDeviceType hwtype, int n_threads=1) | |
| Default constructor. More... | |
| virtual | ~AVHwDecoder () |
| Default destructor. | |
| virtual void | flush () |
| Reset decoder state. How to flush depends on the decoder library. | |
| virtual bool | isOk () |
| The thread that uses this decoder can check if it has gone sour. | |
 Public Member Functions inherited from Decoder | |
| Decoder () | |
| Default constructor. | |
| virtual | ~Decoder () |
| Default destructor. | |
| void | input (Frame *f) |
| Create a copy of the frame into the internal storage of the decoder (i.e. to Decoder::in_frame) | |
| long int | getMsTimestamp () |
| virtual Frame * | output ()=0 |
| < Return in_frame timestamp More... | |
| virtual void | releaseOutput () |
| Decoder might want to know that it's ok to overwrite the frame. | |
| virtual bool | pull ()=0 |
| Decode in_frame to out_frame. Return true if decoder returned a new frame (into out_frame), otherwise false. Implementation depends on the decoder library. | |
| bool | hasFrame () |
Public Attributes | |
| AVCodecID | av_codec_id |
| FFmpeg AVCodecId, identifying the codec. | |
| AVPacket * | av_packet |
| FFmpeg internal data structure; encoded frame (say, H264) | |
| AVCodecContext * | av_codec_context |
| FFmpeg internal data structure. | |
| AVCodec * | av_codec |
| FFmpeg internal data structure. | |
| AVBufferRef * | hw_device_ctx |
| FFmpeg/libav hardware context. | |
| AVFrame * | hw_frame |
| AVPixelFormat | hw_pix_format |
Protected Attributes | |
| int | n_threads |
| bool | active |
| Protected Attributes inherited from Decoder | |
| BasicFrame | in_frame |
| Payload data to be decoded. | |
| bool | has_frame |
Detailed Description
Video decoder using FFmpeg/libav with VAAPI.
Subclassed from the basic ffmpeg/libav decoder class VideoDecoder
See also Code walkthrough: rendering
TODO: from here we still need to subclass into HWVideoDecoder i.e. to define Frame *output() bool pull()
like class VideoDecoder : public AVDecoder
Constructor & Destructor Documentation
◆ AVHwDecoder()
| AVHwDecoder::AVHwDecoder | ( | AVCodecID | av_codec_id, |
| AVHWDeviceType | hwtype, | ||
| int | n_threads = 1 |
||
| ) |
Default constructor.
The documentation for this class was generated from the following files:
- /home/sampsa/C/valkka/include/hwdecoder.h
- /home/sampsa/C/valkka/src/hwdecoder.cpp
