07b93dcf80
Remove the "whence" parameter that is not actually necessary, and only complicates the InputStream implementations.
155 lines
4.1 KiB
C++
155 lines
4.1 KiB
C++
/*
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* Copyright (C) 2003-2014 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "FlacInput.hxx"
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#include "FlacDomain.hxx"
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#include "../DecoderAPI.hxx"
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#include "input/InputStream.hxx"
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#include "util/Error.hxx"
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#include "Log.hxx"
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#include "Compiler.h"
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FLAC__StreamDecoderReadStatus
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FlacInput::Read(FLAC__byte buffer[], size_t *bytes)
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{
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size_t r = decoder_read(decoder, input_stream, (void *)buffer, *bytes);
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*bytes = r;
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if (r == 0) {
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if (input_stream.LockIsEOF() ||
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(decoder != nullptr &&
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decoder_get_command(*decoder) != DecoderCommand::NONE))
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return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
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else
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return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
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}
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return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
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}
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FLAC__StreamDecoderSeekStatus
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FlacInput::Seek(FLAC__uint64 absolute_byte_offset)
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{
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if (!input_stream.IsSeekable())
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return FLAC__STREAM_DECODER_SEEK_STATUS_UNSUPPORTED;
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::Error error;
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if (!input_stream.LockSeek(absolute_byte_offset, error)) {
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LogError(error);
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return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR;
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}
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return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
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}
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FLAC__StreamDecoderTellStatus
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FlacInput::Tell(FLAC__uint64 *absolute_byte_offset)
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{
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if (!input_stream.IsSeekable())
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return FLAC__STREAM_DECODER_TELL_STATUS_UNSUPPORTED;
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*absolute_byte_offset = (FLAC__uint64)input_stream.GetOffset();
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return FLAC__STREAM_DECODER_TELL_STATUS_OK;
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}
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FLAC__StreamDecoderLengthStatus
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FlacInput::Length(FLAC__uint64 *stream_length)
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{
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if (!input_stream.KnownSize())
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return FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED;
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*stream_length = (FLAC__uint64)input_stream.GetSize();
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return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
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}
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FLAC__bool
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FlacInput::Eof()
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{
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return (decoder != nullptr &&
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decoder_get_command(*decoder) != DecoderCommand::NONE &&
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decoder_get_command(*decoder) != DecoderCommand::SEEK) ||
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input_stream.LockIsEOF();
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}
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void
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FlacInput::Error(FLAC__StreamDecoderErrorStatus status)
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{
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if (decoder == nullptr ||
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decoder_get_command(*decoder) != DecoderCommand::STOP)
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LogWarning(flac_domain,
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FLAC__StreamDecoderErrorStatusString[status]);
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}
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FLAC__StreamDecoderReadStatus
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FlacInput::Read(gcc_unused const FLAC__StreamDecoder *flac_decoder,
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FLAC__byte buffer[], size_t *bytes,
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void *client_data)
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{
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FlacInput *i = (FlacInput *)client_data;
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return i->Read(buffer, bytes);
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}
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FLAC__StreamDecoderSeekStatus
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FlacInput::Seek(gcc_unused const FLAC__StreamDecoder *flac_decoder,
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FLAC__uint64 absolute_byte_offset, void *client_data)
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{
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FlacInput *i = (FlacInput *)client_data;
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return i->Seek(absolute_byte_offset);
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}
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FLAC__StreamDecoderTellStatus
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FlacInput::Tell(gcc_unused const FLAC__StreamDecoder *flac_decoder,
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FLAC__uint64 *absolute_byte_offset, void *client_data)
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{
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FlacInput *i = (FlacInput *)client_data;
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return i->Tell(absolute_byte_offset);
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}
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FLAC__StreamDecoderLengthStatus
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FlacInput::Length(gcc_unused const FLAC__StreamDecoder *flac_decoder,
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FLAC__uint64 *stream_length, void *client_data)
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{
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FlacInput *i = (FlacInput *)client_data;
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return i->Length(stream_length);
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}
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FLAC__bool
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FlacInput::Eof(gcc_unused const FLAC__StreamDecoder *flac_decoder,
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void *client_data)
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{
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FlacInput *i = (FlacInput *)client_data;
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return i->Eof();
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}
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void
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FlacInput::Error(gcc_unused const FLAC__StreamDecoder *decoder,
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FLAC__StreamDecoderErrorStatus status, void *client_data)
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{
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FlacInput *i = (FlacInput *)client_data;
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i->Error(status);
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}
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