Use Msp::IO in SoundDecoder

[libs/al.git] / source / sounddecoder.cpp

diff --git a/source/sounddecoder.cpp b/source/sounddecoder.cpp
index d4d176718d9dbc1b82cb402781df8371719f593d..c9da9b808e75b87b540179e4932907fbd92b6858 100644 (file)
--- a/source/sounddecoder.cpp
+++ b/source/sounddecoder.cpp
@@ -1,62 +1,47 @@
 #include <cstring>
 #include <stdexcept>
+#include <msp/io/file.h>
+#include <msp/io/memory.h>
 #include "sounddecoder.h"
 
 using namespace std;
 
 namespace {
 
-struct MemorySource
+size_t read(void *ptr, size_t size, size_t nmemb, void *src)
 {
-       const void *data;
-       unsigned length;
-       unsigned pos;
-
-       MemorySource(const void *d, unsigned l): data(d), length(l), pos(0) { }
-};
-
-size_t memory_read(void *ptr, size_t size, size_t nmemb, void *src)
-{
-       MemorySource &memsrc = *reinterpret_cast<MemorySource *>(src);
-       unsigned len = min<unsigned>(size*nmemb, memsrc.length-memsrc.pos);
-       memcpy(ptr, reinterpret_cast<const char *>(memsrc.data)+memsrc.pos, len);
-       memsrc.pos += len;
-
+       Msp::IO::Base *in = reinterpret_cast<Msp::IO::Base *>(src);
+       unsigned len = in->read(reinterpret_cast<char *>(ptr), size*nmemb);
        return len/size;
 }
 
-int memory_seek(void *src, ogg_int64_t offset, int whence)
+int seek(void *src, ogg_int64_t offset, int whence)
 {
-       MemorySource &memsrc = *reinterpret_cast<MemorySource *>(src);
+       Msp::IO::SeekType type;
        if(whence==SEEK_SET)
-               memsrc.pos = offset;
+               type = Msp::IO::S_BEG;
        else if(whence==SEEK_CUR)
-               memsrc.pos += offset;
+               type = Msp::IO::S_CUR;
        else if(whence==SEEK_END)
-               memsrc.pos = memsrc.length-offset;
-       memsrc.pos = min(memsrc.pos, memsrc.length);
-
-       return memsrc.pos;
-}
+               type = Msp::IO::S_END;
+       else
+               return -1;
 
-int memory_close(void *src)
-{
-       delete reinterpret_cast<MemorySource *>(src);
-       return 0;
+       Msp::IO::Seekable *in = reinterpret_cast<Msp::IO::Seekable *>(src);
+       return in->seek(offset, type);
 }
 
-long memory_tell(void *src)
+long tell(void *src)
 {
-       MemorySource &memsrc = *reinterpret_cast<MemorySource *>(src);
-       return memsrc.pos;
+       return reinterpret_cast<Msp::IO::Seekable *>(src)->tell();
 }
 
-ov_callbacks memory_callbacks=
+ov_callbacks io_callbacks =
 {
-       &memory_read,
-       &memory_seek,
-       &memory_close,
-       &memory_tell
+       &read,
+       &seek,
+       0,
+       &tell
 };
 
 } // namespace
@@ -65,6 +50,7 @@ namespace Msp {
 namespace AL {
 
 SoundDecoder::SoundDecoder():
+       source(0),
        eof_flag(false)
 {
        ovfile.datasource = 0;
@@ -72,31 +58,32 @@ SoundDecoder::SoundDecoder():
 
 SoundDecoder::~SoundDecoder()
 {
-       if(ovfile.datasource)
-               ov_clear(&ovfile);
+       close();
 }
 
 void SoundDecoder::open_file(const string &fn)
 {
        if(ovfile.datasource)
                throw logic_error("Sound has already been opened");
-       if(ov_fopen(const_cast<char *>(fn.c_str()), &ovfile)<0)
+
+       IO::BufferedFile *file = new IO::BufferedFile(fn);
+       if(ov_open_callbacks(file, &ovfile, 0, 0, io_callbacks)<0)
+       {
+               delete file;
                throw runtime_error("Could not open ogg vorbis file "+fn);
+       }
+       source = file;
 
        open_common();
 }
 
-void SoundDecoder::open_memory(const void *d, unsigned len)
+void SoundDecoder::open_io(Msp::IO::Seekable &io)
 {
        if(ovfile.datasource)
                throw logic_error("Sound has already been opened");
 
-       MemorySource *src = new MemorySource(d, len);
-       if(ov_open_callbacks(src, &ovfile, 0, 0, memory_callbacks)<0)
-       {
-               delete src;
-               throw runtime_error("Could not open ogg vorbis memory block");
-       }
+       if(ov_open_callbacks(&io, &ovfile, 0, 0, io_callbacks)<0)
+               throw runtime_error("Could not open ogg vorbis resource");
 
        open_common();
 }
@@ -120,6 +107,8 @@ void SoundDecoder::close()
 {
        if(ovfile.datasource)
                ov_clear(&ovfile);
+       delete source;
+       source = 0;
 }
 
 void SoundDecoder::rewind()