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/******************************************************************************
Copyright (C) 2023 by Dennis Sädtler <dennis@obsproject.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
#pragma once
#include <qmetatype.h>
#include <string>
#include <vector>
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavdevice/avdevice.h>
}
enum FFmpegCodecType { AUDIO, VIDEO, UNKNOWN };
/* This needs to handle a few special cases due to how the format is used in the UI:
* - strequal(nullptr, "") must be true
* - strequal("", nullptr) must be true
* - strequal(nullptr, nullptr) must be true
*/
static bool strequal(const char *a, const char *b)
{
if (!a && !b)
return true;
if (!a && *b == 0)
return true;
if (!b && *a == 0)
return true;
if (!a || !b)
return false;
return strcmp(a, b) == 0;
}
struct FFmpegCodec;
struct FFmpegFormat {
const char *name;
const char *long_name;
const char *mime_type;
const char *extensions;
AVCodecID audio_codec;
AVCodecID video_codec;
const AVCodecTag *const *codec_tags;
FFmpegFormat() = default;
FFmpegFormat(const char *name, const char *mime_type)
: name(name),
long_name(nullptr),
mime_type(mime_type),
extensions(nullptr),
audio_codec(AV_CODEC_ID_NONE),
video_codec(AV_CODEC_ID_NONE),
codec_tags(nullptr)
{
}
FFmpegFormat(const AVOutputFormat *av_format)
: name(av_format->name),
long_name(av_format->long_name),
mime_type(av_format->mime_type),
extensions(av_format->extensions),
audio_codec(av_format->audio_codec),
video_codec(av_format->video_codec),
codec_tags(av_format->codec_tag)
{
}
FFmpegCodec GetDefaultEncoder(FFmpegCodecType codec_type) const;
bool HasAudio() const { return audio_codec != AV_CODEC_ID_NONE; }
bool HasVideo() const { return video_codec != AV_CODEC_ID_NONE; }
bool operator==(const FFmpegFormat &format) const
{
if (!strequal(name, format.name))
return false;
return strequal(mime_type, format.mime_type);
}
};
Q_DECLARE_METATYPE(FFmpegFormat)
struct FFmpegCodec {
const char *name;
const char *long_name;
int id;
FFmpegCodecType type;
FFmpegCodec() = default;
FFmpegCodec(const char *name, int id, FFmpegCodecType type = UNKNOWN)
: name(name),
long_name(nullptr),
id(id),
type(type)
{
}
FFmpegCodec(const AVCodec *codec)
: name(codec->name),
long_name(codec->long_name),
id(codec->id)
{
switch (codec->type) {
case AVMEDIA_TYPE_AUDIO:
type = AUDIO;
break;
case AVMEDIA_TYPE_VIDEO:
type = VIDEO;
break;
default:
type = UNKNOWN;
}
}
bool operator==(const FFmpegCodec &codec) const
{
if (id != codec.id)
return false;
return strequal(name, codec.name);
}
};
Q_DECLARE_METATYPE(FFmpegCodec)
std::vector<FFmpegFormat> GetSupportedFormats();
std::vector<FFmpegCodec> GetFormatCodecs(const FFmpegFormat &format,
bool ignore_compatibility);
bool FFCodecAndFormatCompatible(const char *codec, const char *format);
bool IsBuiltinCodec(const char *codec);
bool ContainerSupportsCodec(const std::string &container,
const std::string &codec);
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