156 lines
3.0 KiB
C++
156 lines
3.0 KiB
C++
/* Mednafen - Multi-system Emulator
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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
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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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#include <mednafen/mednafen.h>
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#include "CDAFReader.h"
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#include "CDAFReader_SF.h"
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#include <sndfile.h>
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class CDAFReader_SF final : public CDAFReader
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{
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public:
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CDAFReader_SF(Stream *fp);
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~CDAFReader_SF();
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uint64 Read_(int16 *buffer, uint64 frames) override;
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bool Seek_(uint64 frame_offset) override;
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uint64 FrameCount(void) override;
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private:
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SNDFILE *sf;
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SF_INFO sfinfo;
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SF_VIRTUAL_IO sfvf;
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Stream *fw;
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};
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static sf_count_t isf_get_filelen(void *user_data)
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{
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Stream *fw = (Stream*)user_data;
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try
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{
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return fw->size();
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}
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catch(...)
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{
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return(-1);
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}
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}
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static sf_count_t isf_seek(sf_count_t offset, int whence, void *user_data)
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{
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Stream *fw = (Stream*)user_data;
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try
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{
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//printf("Seek: offset=%lld, whence=%lld\n", (long long)offset, (long long)whence);
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fw->seek(offset, whence);
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return fw->tell();
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}
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catch(...)
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{
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//printf(" SEEK FAILED\n");
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return(-1);
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}
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}
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static sf_count_t isf_read(void *ptr, sf_count_t count, void *user_data)
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{
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Stream *fw = (Stream*)user_data;
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try
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{
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sf_count_t ret = fw->read(ptr, count, false);
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//printf("Read: count=%lld, ret=%lld\n", (long long)count, (long long)ret);
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return ret;
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}
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catch(...)
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{
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//printf(" READ FAILED\n");
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return(0);
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}
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}
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static sf_count_t isf_write(const void *ptr, sf_count_t count, void *user_data)
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{
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return(0);
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}
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static sf_count_t isf_tell(void *user_data)
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{
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Stream *fw = (Stream*)user_data;
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try
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{
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return fw->tell();
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}
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catch(...)
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{
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return(-1);
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}
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}
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CDAFReader_SF::CDAFReader_SF(Stream *fp) : fw(fp)
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{
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memset(&sfvf, 0, sizeof(sfvf));
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sfvf.get_filelen = isf_get_filelen;
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sfvf.seek = isf_seek;
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sfvf.read = isf_read;
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sfvf.write = isf_write;
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sfvf.tell = isf_tell;
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memset(&sfinfo, 0, sizeof(sfinfo));
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if(!(sf = sf_open_virtual(&sfvf, SFM_READ, &sfinfo, (void*)fp)))
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throw(0);
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}
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CDAFReader_SF::~CDAFReader_SF()
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{
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sf_close(sf);
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}
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uint64 CDAFReader_SF::Read_(int16 *buffer, uint64 frames)
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{
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return(sf_read_short(sf, (short*)buffer, frames * 2) / 2);
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}
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bool CDAFReader_SF::Seek_(uint64 frame_offset)
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{
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// FIXME error condition
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if((uint64)sf_seek(sf, frame_offset, SEEK_SET) != frame_offset)
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return(false);
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return(true);
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}
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uint64 CDAFReader_SF::FrameCount(void)
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{
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return(sfinfo.frames);
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}
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CDAFReader* CDAFR_SF_Open(Stream* fp)
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{
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return new CDAFReader_SF(fp);
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}
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