89 lines
2.0 KiB
C++
89 lines
2.0 KiB
C++
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/*
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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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/* necessary because libavutil/common.h uses UINT64_C */
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#define __STDC_CONSTANT_MACROS
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#include "config.h"
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#include "FfmpegIo.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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AvioStream::~AvioStream()
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{
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av_free(io);
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}
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static int
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mpd_ffmpeg_stream_read(void *opaque, uint8_t *buf, int size)
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{
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AvioStream *stream = (AvioStream *)opaque;
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return decoder_read(stream->decoder, stream->input,
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(void *)buf, size);
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}
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static int64_t
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mpd_ffmpeg_stream_seek(void *opaque, int64_t pos, int whence)
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{
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AvioStream *stream = (AvioStream *)opaque;
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switch (whence) {
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case SEEK_SET:
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break;
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case SEEK_CUR:
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pos += stream->input.GetOffset();
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break;
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case SEEK_END:
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if (!stream->input.KnownSize())
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return -1;
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pos += stream->input.GetSize();
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break;
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case AVSEEK_SIZE:
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if (!stream->input.KnownSize())
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return -1;
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return stream->input.GetSize();
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default:
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return -1;
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}
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if (!stream->input.LockSeek(pos, IgnoreError()))
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return -1;
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return stream->input.GetOffset();
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}
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bool
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AvioStream::Open()
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{
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io = avio_alloc_context(buffer, sizeof(buffer),
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false, this,
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mpd_ffmpeg_stream_read, nullptr,
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input.IsSeekable()
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? mpd_ffmpeg_stream_seek : nullptr);
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return io != nullptr;
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}
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