mirror of
https://github.com/wiidev/usbloadergx.git
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112 lines
3.0 KiB
C++
112 lines
3.0 KiB
C++
/****************************************************************************
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* libwiigui
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*
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* Tantric 2009
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*
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* gui_sound_decoder.h
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*
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* by ardi 2009
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*
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* GUI class definitions
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***************************************************************************/
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#ifndef GUI_SOUND_DECODER_H
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#define GUI_SOUND_DECODER_H
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#include <gccore.h>
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#define REGISTER_GUI_SOUND_DECODER(decoder) GuiSoundDecoder::DecoderListEntry decoder##_l = GuiSoundDecoder::RegisterDecoder(decoder##_l, decoder::Create)
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class GuiSoundDecoder;
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typedef GuiSoundDecoder *( *GuiSoundDecoderCreate )( const u8 * snd, u32 len, bool snd_is_allocated );
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class GuiSoundDecoder
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{
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protected:
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GuiSoundDecoder() {}; // Constructors must protected so it can create only with Init(...);
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public:
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virtual ~GuiSoundDecoder() {};
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// begin API
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// ---------
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// each Decoder must have an own static Create(...) fnc
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// static GuiSoundDecoder *Create(const u8 * snd, u32 len, bool snd_is_allocated);
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virtual s32 GetFormat() = 0;
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virtual s32 GetSampleRate() = 0;
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/* Read reads data from stream to buffer
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return: >0 = readed bytes;
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0 = EOF;
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<0 = Error;
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*/
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virtual int Read( u8 * buffer, int buffer_size ) = 0;
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// set the stream to the start
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virtual int Rewind() = 0;
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// -------
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// end API
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struct DecoderListEntry
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{
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GuiSoundDecoderCreate fnc;
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DecoderListEntry *next;
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};
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static DecoderListEntry &RegisterDecoder( DecoderListEntry &Decoder, GuiSoundDecoderCreate fnc );
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static GuiSoundDecoder *GetDecoder( const u8 * snd, u32 len, bool snd_is_allocated );
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private:
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static DecoderListEntry *DecoderList;
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GuiSoundDecoder( GuiSoundDecoder& ); // no copy
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};
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#define BIG_ENDIAN_HOST 1 // Wii PPC is a Big-Endian-Host
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#if BIG_ENDIAN_HOST
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inline uint16_t be16( const uint8_t *p8 )
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{
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return *( ( uint16_t* )p8 );
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}
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inline uint32_t be32( const uint8_t *p8 )
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{
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return *( ( uint32_t* )p8 );
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}
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inline uint16_t le16( const uint8_t *p8 )
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{
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uint16_t ret = p8[1] << 8 | p8[0];
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return ret;
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}
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inline uint32_t le32( const uint8_t *p8 )
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{
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uint32_t ret = p8[3] << 24 | p8[2] << 16 | p8[1] << 8 | p8[0];
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return ret;
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}
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#elif LITTLE_ENDIAN_HOST
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inline uint16_t be16( const uint8_t *p8 )
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{
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uint16_t ret = p8[0] << 8 | p8[1];
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return ret;
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}
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inline uint32_t be32( const uint8_t *p8 )
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{
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uint32_t ret = p8[0] << 24 | p8[1] << 16 | p8[2] << 8 | p8[3];
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return ret;
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}
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inline uint16_t le16( const uint8_t *p8 )
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{
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return *( ( uint16_t* )p8 );
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}
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inline uint32_t le32( const uint8_t *p8 )
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{
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return *( ( uint32_t* )p8 );
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}
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#else
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#error "BIG_ENDIAN_HOST or LITTLE_ENDIAN_HOST not setted"
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#endif /* XXX_ENDIAN_HOST */
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#define be16inc(p8) (p8+=2, be16(p8-2))
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#define le16inc(p8) (p8+=2, le16(p8-2))
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#define be32inc(p8) (p8+=4, be32(p8-4))
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#define le32inc(p8) (p8+=4, le32(p8-4))
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#endif /* GUI_SOUND_DECODER_H */
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