codec_video.cpp File Reference

Video decoder class. More...

#include <libavcodec/avcodec.h>
#include <libavcodec/bsf.h>
#include <libavutil/pixdesc.h>
#include <vdr/thread.h>
#include "codec_video.h"
#include "logger.h"
#include "misc.h"
#include "videostream.h"

Go to the source code of this file.

Functions
static enum AVPixelFormat	GetFormat (AVCodecContext *videoCtx, const enum AVPixelFormat *fmt)
	Callback to negotiate the PixelFormat.
static const AVCodecHWConfig *	FindHWConfig (const AVCodec *codec)
	Find a hardware based video decoder config.
static const AVCodec *	FindHWDecoder (enum AVCodecID codecId)
	Find a suitable video codec (hardware decoding)
static const AVCodec *	FindSWDecoder (enum AVCodecID codecId)
	Find a suitable video codec (software decoding)

Detailed Description

Video decoder class.

This file defines cVideoDecoder, which has all the functions to decode video data. It's the video interface to ffmpeg.

Copyright

(c) 2009 - 2015 by Johns. All Rights Reserved.

(c) 2018 by zille. All Rights Reserved.

(c) 2025 by Andreas Baierl. All Rights Reserved.

License

AGPLv3

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

Definition in file codec_video.cpp.

Function Documentation

FindHWConfig()

static const AVCodecHWConfig * FindHWConfig ( const AVCodec *  codec )

static

Find a hardware based video decoder config.

Parameters

codec

codec for which we should find a hw config

Returns

AVCodecHWConfig if found, NULL otherwise

Definition at line 83 of file codec_video.cpp.

Referenced by FindHWDecoder(), and cVideoDecoder::Open().

FindHWDecoder()

static const AVCodec * FindHWDecoder ( enum AVCodecID  codecId )

static

Find a suitable video codec (hardware decoding)

Parameters

codecId

video codec id

Returns

AVCodec if found, NULL otherwise

Definition at line 107 of file codec_video.cpp.

References FindHWConfig().

Referenced by cVideoDecoder::Open().

FindSWDecoder()

static const AVCodec * FindSWDecoder ( enum AVCodecID  codecId )

static

Find a suitable video codec (software decoding)

Parameters

codecId

video codec id

Returns

AVCodec if found, NULL otherwise

Definition at line 134 of file codec_video.cpp.

Referenced by cVideoDecoder::Open().

GetFormat()

static enum AVPixelFormat GetFormat ( AVCodecContext *  videoCtx, const enum AVPixelFormat *  fmt  )

static

Callback to negotiate the PixelFormat.

Parameters

videoCtx	video codec context
fmt	the list of formats which are supported by the codec, it is terminated by -1 as 0 is a valid format, the formats are ordered by quality

Definition at line 54 of file codec_video.cpp.

References L_CODEC, LOGDEBUG2, and LOGWARNING.

Referenced by cVideoDecoder::Open().