195 lines
9.6 KiB
C
195 lines
9.6 KiB
C
// VAGDEMO2020 by Schnappy
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// December 2020
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// Based on VAGDEMO_FIXED by Yagotzirck
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// Based on VAGDEMO by Shadow
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// based on psyq/addons/sound/TUTO3.C
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//
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//
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// Load a VAG file to SPU sound buffer and play it back.
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//
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// WAV creation: use ffmpeg to create a 16-bit ADPCM mono WAV file - change -ar to reduce filesize (and quality)
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// $ ffmpeg -i input.mp3 -acodec pcm_s16le -ac 1 -ar 44100 output.wav
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//
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// WAV to VAG convertion using WAV2VAG : https://github.com/ColdSauce/psxsdk/blob/master/tools/wav2vag.c
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// change -freq according to the -ar setting above
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// $ wav2vag input.wav output.vag -sraw16 -freq=44100 (-L)
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//
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// Alternatively, you can use PsyQ VAGEDIT.EXE to change the sampling frequency of an existing VAG file.
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//
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// Docs : see libformat47.pdf p.209
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// libover47.pdf, p.271
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// libref47.pdf, p.980
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// URLS : http://psx.arthus.net/code/VAG/
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#include <sys/types.h>
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#include <stdio.h>
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#include <libgte.h>
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#include <libetc.h>
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#include <libgpu.h>
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// Sound system
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#include <libsnd.h>
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#include <libspu.h>
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#define VMODE 0 // Video Mode : 0 : NTSC, 1: PAL
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#define SCREENXRES 320
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#define SCREENYRES 240
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#define CENTERX SCREENXRES/2
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#define CENTERY SCREENYRES/2
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#define MARGINX 0 // margins for text display
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#define MARGINY 32
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#define FONTSIZE 8 * 7 // Text Field Height
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DISPENV disp[2]; // Double buffered DISPENV and DRAWENV
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DRAWENV draw[2];
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short db = 0; // index of which buffer is used, values 0, 1
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// Sound stuff
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#define MALLOC_MAX 3 // Max number of time we can call SpuMalloc
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//~ // convert Little endian to Big endian
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#define SWAP_ENDIAN32(x) (((x)>>24) | (((x)>>8) & 0xFF00) | (((x)<<8) & 0x00FF0000) | ((x)<<24))
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typedef struct VAGheader{ // All the values in this header must be big endian
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char id[4]; // VAGp 4 bytes -> 1 char * 4
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unsigned int version; // 4 bytes
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unsigned int reserved; // 4 bytes
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unsigned int dataSize; // (in bytes) 4 bytes
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unsigned int samplingFrequency;// 4 bytes
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char reserved2[12]; // 12 bytes -> 1 char * 12
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char name[16]; // 16 bytes -> 1 char * 16
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// Waveform data after that
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}VAGhdr;
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SpuCommonAttr commonAttributes; // structure for changing common voice attributes
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SpuVoiceAttr voiceAttributes ; // structure for changing individual voice attributes
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u_long vag_spu_address; // address allocated in memory for first sound file
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// DEBUG : these allow printing values for debugging
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u_long spu_start_address;
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u_long get_start_addr;
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u_long transSize;
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// Memory management table ; allow MALLOC_MAX calls to SpuMalloc() - libref47.pdf p.1044
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char spu_malloc_rec[SPU_MALLOC_RECSIZ * (MALLOC_MAX+1)];
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// VAG files
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// We're using GrumpyCoder's Nugget wrapper to compile the code with a modern GCC : https://github.com/grumpycoders/pcsx-redux/tree/main/src/mips/psyq
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// To include binary files in the exe, add your VAG files to the SRCS variable in Makefile
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// and in common.mk, add this rule to include *.vag files :
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//
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//~ %.o: %.vag
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//~ $(PREFIX)-objcopy -I binary --set-section-alignment .data=4 --rename-section .data=.rodata,alloc,load,readonly,data,contents -O elf32-tradlittlemips -B mips $< $@
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// hello_poly.vag - 44100 Khz
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extern unsigned char _binary____VAG_hello_poly_vag_start[]; // filename must begin with _binary_ followed by the full path, with . and / replaced, and then suffixed with _ and end with _start[]; or end[];
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extern unsigned char _binary____VAG_hello_poly_vag_end[]; // Going up one directory level is 4 '_' : ____ as ./ is replaced by __
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// https://discord.com/channels/642647820683444236/663664210525290507/780866265077383189
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void initGraph(void)
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{
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ResetGraph(0);
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SetDefDispEnv(&disp[0], 0, 0, SCREENXRES, SCREENYRES);
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SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES);
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SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES);
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SetDefDrawEnv(&draw[1], 0, 0, SCREENXRES, SCREENYRES);
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if (VMODE)
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{
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SetVideoMode(MODE_PAL);
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disp[0].screen.y += 8;
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disp[1].screen.y += 8;
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}
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SetDispMask(1); // Display on screen
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setRGB0(&draw[0], 50, 50, 50);
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setRGB0(&draw[1], 50, 50, 50);
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draw[0].isbg = 1;
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draw[1].isbg = 1;
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PutDispEnv(&disp[db]);
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PutDrawEnv(&draw[db]);
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FntLoad(960, 0);
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FntOpen(8, 60, 304, 200, 0, 500 );
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}
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void display(void)
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{
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DrawSync(0);
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VSync(0);
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PutDispEnv(&disp[db]);
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PutDrawEnv(&draw[db]);
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db = !db;
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}
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// Audio initialisation & functions
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void initSnd(void){
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SpuInitMalloc(MALLOC_MAX, spu_malloc_rec); // Maximum number of blocks, mem. management table address.
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commonAttributes.mask = (SPU_COMMON_MVOLL | SPU_COMMON_MVOLR); // Mask which attributes to set
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commonAttributes.mvol.left = 0x3fff; // Master volume left
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commonAttributes.mvol.right = 0x3fff; // see libref47.pdf, p.1058
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SpuSetCommonAttr(&commonAttributes); // set attributes
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SpuSetIRQ(SPU_OFF);
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}
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u_long sendVAGtoRAM(unsigned int VAG_data_size, unsigned char *VAG_data){
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u_long size;
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SpuSetTransferMode(SpuTransByDMA); // DMA transfer; can do other processing during transfer
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size = SpuWrite (VAG_data + sizeof(VAGhdr), VAG_data_size); // transfer VAG_data_size bytes from VAG_data address to sound buffer
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SpuIsTransferCompleted (SPU_TRANSFER_WAIT); // Checks whether transfer is completed and waits for completion
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return size;
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}
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void setVoiceAttr(unsigned int pitch, long channel, unsigned long soundAddr ){
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voiceAttributes.mask= //~ Attributes (bit string, 1 bit per attribute)
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(
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SPU_VOICE_VOLL |
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SPU_VOICE_VOLR |
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SPU_VOICE_PITCH |
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SPU_VOICE_WDSA |
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SPU_VOICE_ADSR_AMODE |
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SPU_VOICE_ADSR_SMODE |
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SPU_VOICE_ADSR_RMODE |
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SPU_VOICE_ADSR_AR |
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SPU_VOICE_ADSR_DR |
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SPU_VOICE_ADSR_SR |
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SPU_VOICE_ADSR_RR |
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SPU_VOICE_ADSR_SL
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);
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voiceAttributes.voice = channel; //~ Voice (low 24 bits are a bit string, 1 bit per voice )
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voiceAttributes.volume.left = 0x1000; //~ Volume
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voiceAttributes.volume.right = 0x1000; //~ Volume
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voiceAttributes.pitch = pitch; //~ Interval (set pitch)
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voiceAttributes.addr = soundAddr; //~ Waveform data start address
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voiceAttributes.a_mode = SPU_VOICE_LINEARIncN; //~ Attack rate mode = Linear Increase - see libref47.pdf p.1091
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voiceAttributes.s_mode = SPU_VOICE_LINEARIncN; //~ Sustain rate mode = Linear Increase
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voiceAttributes.r_mode = SPU_VOICE_LINEARDecN; //~ Release rate mode = Linear Decrease
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voiceAttributes.ar = 0x0; //~ Attack rate
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voiceAttributes.dr = 0x0; //~ Decay rate
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voiceAttributes.rr = 0x0; //~ Release rate
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voiceAttributes.sr = 0x0; //~ Sustain rate
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voiceAttributes.sl = 0xf; //~ Sustain level
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SpuSetVoiceAttr(&voiceAttributes); // set attributes
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}
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void playSFX(void){
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SpuSetKey(SpuOn,SPU_0CH); // Set several channels by ORing each channel bit ; ex : SpuSetKey(SpuOn,SPU_0CH | SPU_3CH | SPU_8CH); channels 0, 3, 8 are on.
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}
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int main(void)
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{
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short counter = 0;
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const VAGhdr * VAGfileHeader = (VAGhdr *) _binary____VAG_hello_poly_vag_start; // get header of VAG file
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// From libover47.pdf :
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// The sampling frequency of the original audio file can be used to determine the pitch
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// at which to play the VAG. pitch = (sampling frequency << 12)/44100L
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// Ex: 44.1kHz=0x1000 22.05kHz=0x800 etc
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unsigned int pitch = (SWAP_ENDIAN32(VAGfileHeader->samplingFrequency) << 12) / 44100L;
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SpuInit(); // Initialize SPU. Called only once.
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initSnd();
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//~ // First VAG
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vag_spu_address = SpuMalloc(SWAP_ENDIAN32(VAGfileHeader->dataSize)); // Allocate an area of dataSize bytes in the sound buffer.
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spu_start_address = SpuSetTransferStartAddr(vag_spu_address); // Sets a starting address in the sound buffer
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get_start_addr = SpuGetTransferStartAddr(); // SpuGetTransferStartAddr() returns current sound buffer transfer start address.
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transSize = sendVAGtoRAM(SWAP_ENDIAN32(VAGfileHeader->dataSize), _binary____VAG_hello_poly_vag_start);
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// set VAG to channel
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setVoiceAttr(pitch, SPU_0CH, vag_spu_address);
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initGraph();
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while (1)
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{
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if(!counter){
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playSFX();
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counter = 180;
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}
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FntPrint("\nPitch : %08x-%dKhz", pitch, (SWAP_ENDIAN32(VAGfileHeader->samplingFrequency)) );
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FntPrint("\nSet Start addr : %08x", vag_spu_address);
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FntPrint("\nReturn start addr : %08x", spu_start_address);
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FntPrint("\nGet Start addr : %08x", get_start_addr);
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FntPrint("\nSend size : %08x", SWAP_ENDIAN32(VAGfileHeader->dataSize));
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FntPrint("\nReturn size : %08x\n", transSize);
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FntPrint("\nCounter : %d\n", counter);
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FntFlush(-1);
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counter --;
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display();
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}
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return 0;
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}
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