Function decoder_file_decode

src/decoder/Thread.cxx:158–190

* Decode a file with the given decoder plugin. * * Caller holds DecoderControl::mutex. */

 * Caller holds DecoderControl::mutex.
 */
static DecodeResult
decoder_file_decode(const DecoderPlugin &plugin,
		    DecoderBridge &bridge, Path path)
{
	assert(plugin.file_decode != nullptr);
	assert(bridge.stream_tag == nullptr);
	assert(bridge.decoder_tag == nullptr);
	assert(!path.IsNull());
	assert(path.IsAbsolute());
	assert(bridge.dc.state == DecoderState::START);

	FmtDebug(decoder_thread_domain, "probing plugin {}", plugin.name);

	if (bridge.dc.command == DecoderCommand::STOP)
		return DecodeResult::STOP;

	{
		const ScopeUnlock unlock(bridge.dc.mutex);

		FmtThreadName("decoder:{}", plugin.name);

		plugin.FileDecode(bridge, path);

		SetThreadName("decoder");
	}

	assert(bridge.dc.state == DecoderState::START ||
	       bridge.dc.state == DecoderState::DECODE);

	return bridge.dc.state == DecoderState::START
	       ? DecodeResult::UNRECOGNIZED_FILE
	       : DecodeResult::SUCCESS;
}

[[gnu::pure]]
static bool