Glenn Maynard
172 lines
3.6 KiB
C++
172 lines
3.6 KiB
C++
#include "global.h"
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/*
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* Known problems:
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* I hear a click in one speaker at the beginning of some MP3s. This is probably
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* something wrong with my SDL_sound MAD wrapper ...
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*/
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#ifdef DEBUG
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#pragma comment(lib, "SDL_sound-1.0.0/lib/sdl_sound_static_d.lib")
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#else
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#pragma comment(lib, "SDL_sound-1.0.0/lib/sdl_sound_static.lib")
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#endif
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#pragma comment(lib, "SDL_sound-1.0.0/lib/ogg_static.lib")
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#pragma comment(lib, "SDL_sound-1.0.0/lib/vorbis_static.lib")
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#pragma comment(lib, "SDL_sound-1.0.0/lib/vorbisfile_static.lib")
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#include "RageSoundReader_SDL_Sound.h"
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const int channels = 2;
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const int samplesize = 2 * channels; /* 16-bit */
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const int samplerate = 44100;
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/* The amount of data to read from SDL_sound at once. */
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const int read_block_size = 1024;
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bool SoundReader_SDL_Sound::Open(CString filename_)
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{
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filename=filename_;
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static bool initialized = false;
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if(!initialized)
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{
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if(!Sound_Init())
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RageException::Throw( "RageSoundManager::RageSoundManager: error initializing sound loader: %s", Sound_GetError());
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initialized = true;
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}
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inbuf = NULL;
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avail = 0;
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Sound_AudioInfo sound_desired;
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sound_desired.channels = channels;
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sound_desired.format = AUDIO_S16SYS;
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sound_desired.rate = samplerate;
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Sample = Sound_NewSampleFromFile(filename.GetString(),
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&sound_desired, read_block_size);
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if(Sample)
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return true;
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SetError(Sound_GetError());
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return false;
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}
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int SoundReader_SDL_Sound::GetLength() const
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{
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int len = Sound_Length(Sample);
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if(len == -1 && Sample->flags & SOUND_SAMPLEFLAG_EAGAIN) {
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/* This indicates the length check will take a little while; call
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* it again to confirm. */
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len = Sound_Length(Sample);
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}
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if(len < 0)
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{
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SetError(Sound_GetError());
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return -1;
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}
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return len;
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}
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int SoundReader_SDL_Sound::GetLength_Fast() const
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{
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int ret = Sound_Length(Sample);
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Sound_Rewind(Sample);
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return ret;
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}
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int SoundReader_SDL_Sound::SetPosition(int ms, bool accurate)
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{
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if(ms == 0)
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{
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Sound_Rewind(Sample);
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return 0;
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}
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int ret;
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if(accurate)
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ret = Sound_AccurateSeek(Sample, ms);
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else
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ret = Sound_FastSeek(Sample, ms);
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if(Sample->flags & SOUND_SAMPLEFLAG_ERROR)
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{
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SetError(Sound_GetError());
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return -1;
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}
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/* If the seek function returned false but didn't set error, it's a
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* recoverable error. We probably seeked past end of file. */
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if(!ret)
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{
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/* Past EOF. Rewind. */
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Sound_Rewind(Sample);
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return 0;
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}
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return ms;
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}
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int SoundReader_SDL_Sound::Read(char *buf, unsigned len)
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{
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int bytes_read = 0;
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while(len)
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{
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if(!avail)
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{
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/* Don't read at all if we've already hit EOF (it'll whine). */
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if(Sample->flags & SOUND_SAMPLEFLAG_EOF)
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return bytes_read; /* EOF */
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int cnt = Sound_Decode(Sample);
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if(Sample->flags & SOUND_SAMPLEFLAG_EOF)
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return bytes_read; /* EOF */
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if(Sample->flags & SOUND_SAMPLEFLAG_ERROR)
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{
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SetError(Sound_GetError());
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return -1;
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}
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avail = cnt;
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inbuf = (const char *) Sample->buffer;
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}
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unsigned size = min(avail, len);
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memcpy(buf, inbuf, size);
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buf += size;
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len -= size;
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inbuf += size;
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avail -= size;
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bytes_read += size;
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}
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return bytes_read;
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}
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SoundReader_SDL_Sound::~SoundReader_SDL_Sound()
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{
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Sound_FreeSample(Sample);
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}
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SoundReader *SoundReader_SDL_Sound::Copy() const
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{
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SoundReader_SDL_Sound *ret = new SoundReader_SDL_Sound;
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ret->Open(filename);
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return ret;
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}
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/*
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-----------------------------------------------------------------------------
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Copyright (c) 2002-2003 by the person(s) listed below. All rights reserved.
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Glenn Maynard
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-----------------------------------------------------------------------------
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*/
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