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Diffstat (limited to '')
-rw-r--r-- | src/decoder/FLACInput.cxx | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/decoder/FLACInput.cxx b/src/decoder/FLACInput.cxx new file mode 100644 index 000000000..ba0a86ce8 --- /dev/null +++ b/src/decoder/FLACInput.cxx @@ -0,0 +1,149 @@ +/* + * Copyright (C) 2003-2012 The Music Player Daemon Project + * http://www.musicpd.org + * + * 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, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "FLACInput.hxx" +#include "decoder_api.h" +#include "gcc.h" +#include "InputStream.hxx" + +FLAC__StreamDecoderReadStatus +FLACInput::Read(FLAC__byte buffer[], size_t *bytes) +{ + size_t r = decoder_read(decoder, input_stream, (void *)buffer, *bytes); + *bytes = r; + + if (r == 0) { + if (input_stream_lock_eof(input_stream) || + (decoder != nullptr && + decoder_get_command(decoder) != DECODE_COMMAND_NONE)) + return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM; + else + return FLAC__STREAM_DECODER_READ_STATUS_ABORT; + } + + return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; +} + +FLAC__StreamDecoderSeekStatus +FLACInput::Seek(FLAC__uint64 absolute_byte_offset) +{ + if (!input_stream->seekable) + return FLAC__STREAM_DECODER_SEEK_STATUS_UNSUPPORTED; + + if (!input_stream_lock_seek(input_stream, + absolute_byte_offset, SEEK_SET, + nullptr)) + return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR; + + return FLAC__STREAM_DECODER_SEEK_STATUS_OK; +} + +FLAC__StreamDecoderTellStatus +FLACInput::Tell(FLAC__uint64 *absolute_byte_offset) +{ + if (!input_stream->seekable) + return FLAC__STREAM_DECODER_TELL_STATUS_UNSUPPORTED; + + *absolute_byte_offset = (FLAC__uint64)input_stream->offset; + return FLAC__STREAM_DECODER_TELL_STATUS_OK; +} + +FLAC__StreamDecoderLengthStatus +FLACInput::Length(FLAC__uint64 *stream_length) +{ + if (input_stream->size < 0) + return FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED; + + *stream_length = (FLAC__uint64)input_stream->size; + return FLAC__STREAM_DECODER_LENGTH_STATUS_OK; +} + +FLAC__bool +FLACInput::Eof() +{ + return (decoder != nullptr && + decoder_get_command(decoder) != DECODE_COMMAND_NONE && + decoder_get_command(decoder) != DECODE_COMMAND_SEEK) || + input_stream_lock_eof(input_stream); +} + +void +FLACInput::Error(FLAC__StreamDecoderErrorStatus status) +{ + if (decoder == nullptr || + decoder_get_command(decoder) != DECODE_COMMAND_STOP) + g_warning("%s", FLAC__StreamDecoderErrorStatusString[status]); +} + +FLAC__StreamDecoderReadStatus +FLACInput::Read(gcc_unused const FLAC__StreamDecoder *flac_decoder, + FLAC__byte buffer[], size_t *bytes, + void *client_data) +{ + FLACInput *i = (FLACInput *)client_data; + + return i->Read(buffer, bytes); +} + +FLAC__StreamDecoderSeekStatus +FLACInput::Seek(gcc_unused const FLAC__StreamDecoder *flac_decoder, + FLAC__uint64 absolute_byte_offset, void *client_data) +{ + FLACInput *i = (FLACInput *)client_data; + + return i->Seek(absolute_byte_offset); +} + +FLAC__StreamDecoderTellStatus +FLACInput::Tell(gcc_unused const FLAC__StreamDecoder *flac_decoder, + FLAC__uint64 *absolute_byte_offset, void *client_data) +{ + FLACInput *i = (FLACInput *)client_data; + + return i->Tell(absolute_byte_offset); +} + +FLAC__StreamDecoderLengthStatus +FLACInput::Length(gcc_unused const FLAC__StreamDecoder *flac_decoder, + FLAC__uint64 *stream_length, void *client_data) +{ + FLACInput *i = (FLACInput *)client_data; + + return i->Length(stream_length); +} + +FLAC__bool +FLACInput::Eof(gcc_unused const FLAC__StreamDecoder *flac_decoder, + void *client_data) +{ + FLACInput *i = (FLACInput *)client_data; + + return i->Eof(); +} + +void +FLACInput::Error(gcc_unused const FLAC__StreamDecoder *decoder, + FLAC__StreamDecoderErrorStatus status, void *client_data) +{ + FLACInput *i = (FLACInput *)client_data; + + i->Error(status); +} + |