bool CodecContext2::checkCodec(const Codec &codec, Direction direction, AVMediaType type, OptionalErrorCode ec)
{
if (direction == Direction::Encoding && !codec.canEncode())
{
fflog(AV_LOG_WARNING, "Encoding context, but codec does not support encoding\n");
throws_if(ec, Errors::CodecInvalidDirection);
return false;
}
if (direction == Direction::Decoding && !codec.canDecode())
{
fflog(AV_LOG_WARNING, "Decoding context, but codec does not support decoding\n");
throws_if(ec, Errors::CodecInvalidDirection);
return false;
}
if (type != codec.type())
{
fflog(AV_LOG_ERROR, "Media type mismatch\n");
throws_if(ec, Errors::CodecInvalidMediaType);
return false;
}
return true;
}
void CodecContext::setCodec(const Codec &codec, bool resetDefaults, error_code &ec)
{
clear_if(ec);
if (!m_raw)
{
fflog(AV_LOG_WARNING, "Codec context does not allocated\n");
throws_if(ec, Errors::Unallocated);
return;
}
if (!m_raw || (!m_stream.isValid() && !m_stream.isNull()))
{
fflog(AV_LOG_WARNING, "Parent stream is not valid. Probably it or FormatContext destroyed\n");
throws_if(ec, Errors::CodecStreamInvalid);
return;
}
if (codec.isNull())
{
fflog(AV_LOG_WARNING, "Try to set null codec\n");
}
if (m_direction == Direction::ENCODING && codec.canEncode() == false)
{
fflog(AV_LOG_WARNING, "Encoding context, but codec does not support encoding\n");
throws_if(ec, Errors::CodecInvalidDirection);
return;
}
if (m_direction == Direction::DECODING && codec.canDecode() == false)
{
fflog(AV_LOG_WARNING, "Decoding context, but codec does not support decoding\n");
throws_if(ec, Errors::CodecInvalidDirection);
return;
}
if (resetDefaults) {
if (!m_raw->codec) {
avcodec_free_context(&m_raw);
m_raw = avcodec_alloc_context3(codec.raw());
} else {
avcodec_get_context_defaults3(m_raw, codec.raw());
}
} else {
m_raw->codec_id = !codec.isNull() ? codec.raw()->id : CODEC_ID_NONE;
m_raw->codec_type = !codec.isNull() ? codec.raw()->type : AVMEDIA_TYPE_UNKNOWN;
m_raw->codec = codec.raw();
if (!codec.isNull()) {
if (codec.raw()->pix_fmts != 0)
m_raw->pix_fmt = *(codec.raw()->pix_fmts); // assign default value
if (codec.raw()->sample_fmts != 0)
m_raw->sample_fmt = *(codec.raw()->sample_fmts);
}
}
if (m_stream.isValid()) {
m_stream.raw()->codec = m_raw;
}
}
