mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-03 18:15:06 +01:00
441 lines
10 KiB
C++
441 lines
10 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.cpp
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*
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* decoder modification by ardi 2009
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*
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* GUI class definitions
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***************************************************************************/
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#include "gui.h"
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#include <unistd.h>
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#include "gecko.h"
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#include "gui_sound_decoder.h"
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#define BUFFER_SIZE 8192
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/***************************************************************
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*
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* D E C O D E R – L I S T
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*
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*
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***************************************************************/
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GuiSoundDecoder::DecoderListEntry *GuiSoundDecoder::DecoderList = NULL;
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GuiSoundDecoder::DecoderListEntry &GuiSoundDecoder::RegisterDecoder(DecoderListEntry &Decoder, GuiSoundDecoderCreate fnc)
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{
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if(Decoder.fnc != fnc)
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{
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Decoder.fnc = fnc;
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Decoder.next = DecoderList;
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DecoderList = &Decoder;
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}
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return Decoder;
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}
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GuiSoundDecoder *GuiSoundDecoder::GetDecoder(const u8 * snd, u32 len, bool snd_is_allocated)
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{
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for(DecoderListEntry *de = DecoderList; de; de=de->next)
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{
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GuiSoundDecoder *d = NULL;
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try{ d = de->fnc(snd, len, snd_is_allocated); }
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catch(const char *error){
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gprintf("%s", error); }
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catch(...){}
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if(d) return d;
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}
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return NULL;
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}
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/***************************************************************
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*
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* D E C O D E R – T H R E A D
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*
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*
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***************************************************************/
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static GuiSound *GuiSoundPlayer[16] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};
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static lwp_t GuiSoundDecoderThreadHandle = LWP_THREAD_NULL;
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static bool GuiSoundDecoderThreadRunning = false;
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static bool GuiSoundDecoderDataRquested = false;
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void *GuiSoundDecoderThread(void *args)
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{
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GuiSoundDecoderThreadRunning = true;
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do
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{
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if(GuiSoundDecoderDataRquested)
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{
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GuiSoundDecoderDataRquested = false;
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GuiSound **players = GuiSoundPlayer;
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for( int i = 0; i < 16; ++i , ++players)
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{
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GuiSound *player = *players;
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if(player)
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player->DecoderCallback();
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}
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}
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if(!GuiSoundDecoderDataRquested)
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usleep(50);
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} while(GuiSoundDecoderThreadRunning);
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return 0;
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}
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/***************************************************************
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*
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* A S N D – C A L L B A C K
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*
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*
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***************************************************************/
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void GuiSoundPlayerCallback(s32 Voice)
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{
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if(Voice >= 0 && Voice < 16 && GuiSoundPlayer[Voice])
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{
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GuiSoundPlayer[Voice]->PlayerCallback();
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GuiSoundDecoderDataRquested = true;
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}
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}
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/***************************************************************
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*
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* R A W - D E C O D E R
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* Decoder for Raw-PCM-Datas (16bit Stereo 48kHz)
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*
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***************************************************************/
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class GuiSoundDecoderRAW : public GuiSoundDecoder
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{
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protected:
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GuiSoundDecoderRAW(const u8 * snd, u32 len, bool snd_is_allocated)
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{
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pcm_start = snd;
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is_allocated = snd_is_allocated;
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pcm_end = pcm_start+len;
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pos = pcm_start;
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is_running = false;
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}
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public:
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~GuiSoundDecoderRAW()
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{
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while(is_running) usleep(50);
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if(is_allocated) delete [] pcm_start;
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}
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static GuiSoundDecoder *Create(const u8 * snd, u32 len, bool snd_is_allocated)
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{
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try { return new GuiSoundDecoderRAW(snd, len, snd_is_allocated); }
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catch(...) {}
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return NULL;
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}
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s32 GetFormat()
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{
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return VOICE_STEREO_16BIT;
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}
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s32 GetSampleRate()
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{
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return 48000;
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}
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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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int Read(u8 * buffer, int buffer_size)
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{
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if(pos >= pcm_end)
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return 0; // EOF
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is_running = true;
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if(pos + buffer_size > pcm_end)
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buffer_size = pcm_end-pos;
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memcpy(buffer, pos, buffer_size);
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pos += buffer_size;
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is_running = false;
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return buffer_size;
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}
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int Rewind()
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{
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pos = pcm_start;
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return 0;
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}
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private:
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const u8 *pcm_start;
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const u8 *pcm_end;
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bool is_allocated;
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const u8 *pos;
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bool is_running;
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};
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/***************************************************************
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*
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* G u i S o u n d
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*
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*
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***************************************************************/
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#define GuiSoundBufferReady 0x01
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#define GuiSoundBufferEOF 0x02
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#define GuiSoundFinish 0x04
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static int GuiSoundCount = 0;
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/**
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* Constructor for the GuiSound class.
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*/
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GuiSound::GuiSound(const u8 *s, int l, int v/*=100*/, bool r/*=true*/, bool a/*=false*/)
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{
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if(GuiSoundCount++ == 0 || GuiSoundDecoderThreadHandle == LWP_THREAD_NULL)
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{
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LWP_CreateThread(&GuiSoundDecoderThreadHandle,GuiSoundDecoderThread,NULL,NULL,32*1024,80);
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}
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voice = -1;
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play_buffer[0] = (u8*)memalign(32, BUFFER_SIZE*3); // tripple-buffer first is played
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play_buffer[1] = play_buffer[0] + BUFFER_SIZE; // second is waiting
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play_buffer[2] = play_buffer[1] + BUFFER_SIZE; // third is decoding
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buffer_nr = 0; // current playbuffer
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buffer_pos = 0; // current idx to write in buffer
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buffer_ready = false;
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buffer_eof = false;
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loop = false; // play looped
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volume = v; // volume
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decoder = NULL;
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if(play_buffer[0]) // playbuffer ok
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Load(s, l, r, a);
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}
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bool GuiSound::Load(const u8 *s, int l, bool r/*=false*/, bool a/*=false*/)
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{
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Stop();
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if(!play_buffer[0]) return false;
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GuiSoundDecoder *newDecoder = GuiSoundDecoder::GetDecoder(s, l, a);
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if(!newDecoder && r) newDecoder = GuiSoundDecoderRAW::Create(s, l, a);
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if(newDecoder)
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{
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delete decoder;
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decoder = newDecoder;
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return true;
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}
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else if(a)
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delete [] s;
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return false;
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}
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GuiSound::GuiSound(const char *p, int v/*=100*/)
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{
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if(GuiSoundCount++ == 0 || GuiSoundDecoderThreadHandle == LWP_THREAD_NULL)
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{
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LWP_CreateThread(&GuiSoundDecoderThreadHandle,GuiSoundDecoderThread,NULL,NULL,32*1024,80);
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}
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voice = -1;
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play_buffer[0] = (u8*)memalign(32, BUFFER_SIZE*3); // tripple-buffer first is played
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play_buffer[1] = play_buffer[0] + BUFFER_SIZE; // second is waiting
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play_buffer[2] = play_buffer[1] + BUFFER_SIZE; // third is decoding
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buffer_nr = 0; // current playbuffer
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buffer_pos = 0; // current idx to write in buffer
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buffer_ready = false;
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buffer_eof = false;
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loop = false; // play looped
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volume = v; // volume
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decoder = NULL;
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if(play_buffer[0]) // playbuffer ok
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Load(p);
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}
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bool GuiSound::Load(const char *p)
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{
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Stop(); // stop playing
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if(!play_buffer[0]) return false;
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bool ret = false;
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voice = -2; // -2 marks loading from file
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u32 filesize = 0;
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u8 *buffer = NULL;
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size_t result;
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FILE * pFile = fopen (p, "rb");
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if(pFile)
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{
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// get file size:
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fseek (pFile , 0 , SEEK_END);
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filesize = ftell (pFile);
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fseek (pFile , 0 , SEEK_SET);
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// allocate memory to contain the whole file:
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buffer = new(std::nothrow) u8[filesize];
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if (buffer)
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{
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// copy the file into the buffer:
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result = fread (buffer, 1, filesize, pFile);
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if (result == filesize)
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ret= Load(buffer, filesize, false, true);
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else
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delete [] buffer;
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}
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fclose (pFile);
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}
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return ret;
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}
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/**
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* Destructor for the GuiSound class.
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*/
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GuiSound::~GuiSound()
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{
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if(!loop) while(voice >= 0) usleep(50);
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Stop();
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if(--GuiSoundCount == 0 && GuiSoundDecoderThreadHandle != LWP_THREAD_NULL)
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{
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GuiSoundDecoderThreadRunning = false;
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LWP_JoinThread(GuiSoundDecoderThreadHandle,NULL);
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GuiSoundDecoderThreadHandle = LWP_THREAD_NULL;
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}
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delete decoder;
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free(play_buffer[0]);
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}
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void GuiSound::Play()
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{
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Stop(); // stop playing if it played
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if(!play_buffer[0]) return;
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if(!decoder) return; // no decoder or no play_buffer -> no playing
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// initialize the buffer
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buffer_nr = 0; // allways starts with buffer 0
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buffer_pos = 0; // reset position
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buffer_ready = false;
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buffer_eof = false;
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decoder->Rewind(); // play from begin
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DecoderCallback(); // fill first buffer;
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if(!buffer_ready || buffer_eof) // if first buffer not ready -> no play
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return;
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voice = ASND_GetFirstUnusedVoice();
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if(voice >= 0)
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{
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s32 vol = (255*volume)/100;
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s32 format = decoder->GetFormat();
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s32 samplerate = decoder->GetSampleRate();
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s32 first_pos = buffer_pos;
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// switch to next buffer
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buffer_nr = 1;
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buffer_pos = 0;
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buffer_ready = false;
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buffer_eof = false;
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DecoderCallback(); // fill second buffer;
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GuiSoundPlayer[voice] = this; // activate Callbacks for this voice
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// Play the voice
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ASND_SetVoice(voice, format, samplerate, 0, play_buffer[0], first_pos, vol, vol, GuiSoundPlayerCallback);
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}
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}
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/*
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int GuiSound::PlayOggFile(char * path)
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{
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if(Load(path))
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Play();
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return 1;
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}
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*/
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void GuiSound::Stop()
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{
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if(voice < 0) return ;
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GuiSoundPlayer[voice] = NULL; // disable Callbacks
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SND_StopVoice(voice);
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voice = -1;
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}
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void GuiSound::Pause()
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{
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if(voice < 0) return ;
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ASND_PauseVoice(voice, 1);
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}
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void GuiSound::Resume()
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{
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if(voice < 0) return ;
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ASND_PauseVoice(voice, 0);
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}
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bool GuiSound::IsPlaying()
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{
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return voice >= 0;
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}
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void GuiSound::SetVolume(int vol)
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{
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volume = vol;
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if(voice < 0) return ;
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int newvol = 255*(volume/100.0);
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ASND_ChangeVolumeVoice(voice, newvol, newvol);
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}
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void GuiSound::SetLoop(bool l)
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{
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loop = l;
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}
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void GuiSound::DecoderCallback()
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{
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if(buffer_ready || buffer_eof) // if buffer ready or EOF -> nothing
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return;
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bool error=false;
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while(buffer_pos < BUFFER_SIZE)
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{
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int ret = decoder->Read(&play_buffer[buffer_nr][buffer_pos], BUFFER_SIZE-buffer_pos);
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if(ret > 0)
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buffer_pos += ret; // ok -> fill the buffer more
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else if(ret == 0) // EOF from decoder
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{
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if(loop)
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decoder->Rewind(); // if loop -> rewind and fill the buffer more
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else if(buffer_pos)
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break; // has data in buffer -> play the buffer
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else
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buffer_eof = true; // no data in buffer -> return EOF
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return;
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}
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else if(ret < 0) // an ERROR
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{
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if(buffer_pos)
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break; // has data in buffer -> play the buffer
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else if(loop)
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{
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if(!error) // if no prev error
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{
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decoder->Rewind(); // if loop -> rewind
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error = true; // set error-state
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continue; // and fill the buffer more
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}
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buffer_eof = true; // has prev error -> error in first block -> return EOF
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return;
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}
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else
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{
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buffer_eof = true; // no loop -> return EOF
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return;
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}
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}
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error = false; // clear error-state
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}
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buffer_ready = true;
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}
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void GuiSound::PlayerCallback()
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{
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if(buffer_eof) // if EOF
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{
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if(ASND_TestPointer(voice, play_buffer[(buffer_nr+2)%3])==0) // test prev. Buffer
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Stop();
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}
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else if(buffer_ready) // if buffer ready
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{
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if(ASND_AddVoice(voice, play_buffer[buffer_nr], buffer_pos)==SND_OK) // add buffer
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{
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// next buffer
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buffer_nr = (buffer_nr+1)%3;
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buffer_pos = 0;
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buffer_ready= false;
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buffer_eof = false;
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}
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}
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}
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