mirror of
https://github.com/libretro/scummvm.git
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151 lines
3.5 KiB
C++
151 lines
3.5 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2003 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include "stdafx.h"
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#include "sound/vorbis.h"
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#include "common/file.h"
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#include "common/util.h"
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#ifdef USE_VORBIS
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// These are wrapper functions to allow using a File object to
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// provide data to the OggVorbis_File object.
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struct file_info {
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File *file;
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int start, curr_pos;
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size_t len;
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};
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static size_t read_wrap(void *ptr, size_t size, size_t nmemb, void *datasource) {
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file_info *f = (file_info *) datasource;
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int result;
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nmemb *= size;
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if (f->curr_pos > (int) f->len)
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nmemb = 0;
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else if (nmemb > f->len - f->curr_pos)
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nmemb = f->len - f->curr_pos;
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result = f->file->read(ptr, nmemb);
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if (result == -1) {
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f->curr_pos = f->file->pos() - f->start;
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return (size_t) -1;
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} else {
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f->curr_pos += result;
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return result / size;
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}
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}
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static int seek_wrap(void *datasource, ogg_int64_t offset, int whence) {
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file_info *f = (file_info *) datasource;
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if (whence == SEEK_SET)
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offset += f->start;
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else if (whence == SEEK_END) {
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offset += f->start + f->len;
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whence = SEEK_SET;
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}
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f->file->seek(offset, whence);
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f->curr_pos = f->file->pos() - f->start;
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return f->curr_pos;
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}
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static int close_wrap(void *datasource) {
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file_info *f = (file_info *) datasource;
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f->file->close();
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delete f;
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return 0;
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}
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static long tell_wrap(void *datasource) {
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file_info *f = (file_info *) datasource;
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return f->curr_pos;
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}
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static ov_callbacks g_File_wrap = {
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read_wrap, seek_wrap, close_wrap, tell_wrap
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};
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#endif
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#ifdef USE_VORBIS
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VorbisTrackInfo::VorbisTrackInfo(File *file) {
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file_info *f = new file_info;
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f->file = file;
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f->start = 0;
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f->len = file->size();
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f->curr_pos = file->pos();
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if (ov_open_callbacks((void *) f, &_ov_file, NULL, 0, g_File_wrap) < 0) {
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warning("Invalid file format");
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_error_flag = true;
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delete f;
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delete file;
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} else {
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_error_flag = false;
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_file = file;
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}
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}
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#ifdef CHUNKSIZE
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#define VORBIS_TREMOR
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#endif
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int VorbisTrackInfo::play(SoundMixer *mixer, PlayingSoundHandle *handle, int startFrame, int duration) {
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#ifdef VORBIS_TREMOR
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ov_time_seek(&_ov_file, (ogg_int64_t)(startFrame / 75.0 * 1000));
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#else
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ov_time_seek(&_ov_file, startFrame / 75.0);
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#endif
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return mixer->playVorbis(handle, &_ov_file,
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duration * ov_info(&_ov_file, -1)->rate / 75, true);
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}
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VorbisTrackInfo::~VorbisTrackInfo() {
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if (! _error_flag) {
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ov_clear(&_ov_file);
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delete _file;
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}
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}
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void playSfxSound_Vorbis(SoundMixer *mixer, File *file, uint32 size, PlayingSoundHandle *handle) {
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OggVorbis_File *ov_file = new OggVorbis_File;
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file_info *f = new file_info;
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f->file = file;
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f->start = file->pos();
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f->len = size;
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f->curr_pos = 0;
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if (ov_open_callbacks((void *) f, ov_file, NULL, 0, g_File_wrap) < 0) {
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warning("Invalid file format");
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delete ov_file;
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delete f;
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} else
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mixer->playVorbis(handle, ov_file, 0, false);
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}
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#endif
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