[libpicofe.git] / gp2x / 940ctl.c

// Code for communication with ARM940 and control of it.\r
// (c) Copyright 2007, Grazvydas "notaz" Ignotas\r
\r
#include <stdio.h>\r
#include <stdlib.h>\r
#include <string.h>\r
#include <unistd.h>\r
#include <sys/mman.h>\r
#include <sys/ioctl.h>\r
#include <fcntl.h>\r
#include <errno.h>\r
\r
#include "code940/940shared.h"\r
#include "soc_mmsp2.h"\r
#include "soc.h"\r
#include "../common/mp3.h"\r
#include "../common/arm_utils.h"\r
#include "../common/menu.h"\r
#include "../common/emu.h"\r
#include "../common/input.h"\r
#include "../../pico/pico_int.h"\r
#include "../../pico/sound/ym2612.h"\r
#include "../../pico/sound/mix.h"\r
\r
static unsigned char *shared_mem = 0;\r
static _940_data_t *shared_data = 0;\r
_940_ctl_t *shared_ctl = 0;\r
unsigned char *mp3_mem = 0;\r
\r
#define MP3_SIZE_MAX (0x400000 + 0x800000) // 12M\r
#define CODE940_FILE "pico940_v3.bin"\r
\r
int crashed_940 = 0;\r
\r
static FILE *loaded_mp3 = 0;\r
\r
/***********************************************************/\r
\r
#define MAXOUT		(+32767)\r
#define MINOUT		(-32768)\r
\r
/* limitter */\r
#define Limit(val, max,min) { \\r
	if ( val > max )      val = max; \\r
	else if ( val < min ) val = min; \\r
}\r
\r
/* these will be managed locally on our side */\r
static UINT8 ST_address;	/* address register     */\r
static INT32 addr_A1;		/* address line A1      */\r
\r
static int   writebuff_ptr = 0;\r
\r
\r
/* YM2612 write */\r
/* a = address */\r
/* v = value   */\r
/* returns 1 if sample affecting state changed */\r
int YM2612Write_940(unsigned int a, unsigned int v, int scanline)\r
{\r
	int upd = 1;	/* the write affects sample generation */\r
\r
	a &= 3;\r
\r
	//printf("%05i:%03i: ym w ([%i] %02x)\n", Pico.m.frame_count, Pico.m.scanline, a, v);\r
\r
	switch (a)\r
	{\r
		case 0:	/* address port 0 */\r
			if (addr_A1 == 0 && ST_address == v)\r
				return 0; /* address already selected, don't send this command to 940 */\r
			ST_address = v;\r
			addr_A1 = 0;\r
			/* don't send DAC or timer related address changes to 940 */\r
			if (v == 0x24 || v == 0x25 || v == 0x26 || v == 0x2a)\r
				return 0;\r
			upd = 0;\r
			break;\r
\r
		case 2:	/* address port 1 */\r
			if (addr_A1 == 1 && ST_address == v)\r
				return 0;\r
			ST_address = v;\r
			addr_A1 = 1;\r
			upd = 0;\r
			break;\r
	}\r
\r
	//printf("ym pass\n");\r
\r
	if (currentConfig.EmuOpt & 4)\r
	{\r
		UINT16 *writebuff = shared_ctl->writebuffsel ? shared_ctl->writebuff0 : shared_ctl->writebuff1;\r
\r
		/* detect rapid ym updates */\r
		if (upd && !(writebuff_ptr & 0x80000000) && scanline < 224)\r
		{\r
			int mid = Pico.m.pal ? 68 : 93;\r
			if (scanline > mid) {\r
				//printf("%05i:%03i: rapid ym\n", Pico.m.frame_count, scanline);\r
				writebuff[writebuff_ptr++ & 0xffff] = 0xfffe;\r
				writebuff_ptr |= 0x80000000;\r
				//printf("%05i:%03i: ym w ([%02x] %02x, upd=%i)\n", Pico.m.frame_count, scanline, addr, v, upd);\r
			}\r
		}\r
\r
		/* queue this write for 940 */\r
		if ((writebuff_ptr&0xffff) < 2047) {\r
			writebuff[writebuff_ptr++ & 0xffff] = (a<<8)|v;\r
		} else {\r
			printf("warning: writebuff_ptr > 2047 ([%i] %02x)\n", a, v);\r
		}\r
	}\r
\r
	return 0; // cause the engine to do updates once per frame only\r
}\r
\r
\r
#define CHECK_BUSY(job) \\r
	(gp2x_memregs[0x3b46>>1] & (1<<(job-1)))\r
\r
static void wait_busy_940(int job)\r
{\r
	int i;\r
\r
	job--;\r
	for (i = 0; (gp2x_memregs[0x3b46>>1] & (1<<job)) && i < 0x10000; i++)\r
		spend_cycles(8*1024); // tested to be best for mp3 dec\r
	if (i < 0x10000) return;\r
\r
	/* 940 crashed */\r
	printf("940 crashed (cnt: %i, ve: ", shared_ctl->loopc);\r
	for (i = 0; i < 8; i++)\r
		printf("%i ", shared_ctl->vstarts[i]);\r
	printf(")\n");\r
	printf("irq pending flags: DUALCPU %04x, SRCPND %08lx (see 26), INTPND %08lx\n",\r
		gp2x_memregs[0x3b46>>1], gp2x_memregl[0x4500>>2], gp2x_memregl[0x4510>>2]);\r
	printf("last lr: %08x, lastjob: %i\n", shared_ctl->last_lr, shared_ctl->lastjob);\r
	printf("trying to interrupt..\n");\r
	gp2x_memregs[0x3B3E>>1] = 0xffff;\r
	for (i = 0; gp2x_memregs[0x3b46>>1] && i < 0x10000; i++)\r
		spend_cycles(8*1024);\r
	printf("i = 0x%x\n", i);\r
	printf("irq pending flags: DUALCPU %04x, SRCPND %08lx (see 26), INTPND %08lx\n",\r
		gp2x_memregs[0x3b46>>1], gp2x_memregl[0x4500>>2], gp2x_memregl[0x4510>>2]);\r
	printf("last lr: %08x, lastjob: %i\n", shared_ctl->last_lr, shared_ctl->lastjob);\r
\r
	me_update_msg("940 crashed, too much overclock?");\r
	engineState = PGS_Menu;\r
	crashed_940 = 1;\r
}\r
\r
\r
static void add_job_940(int job)\r
{\r
	if (job <= 0 || job > 16) {\r
		printf("add_job_940: bad job: %i\n", job);\r
		return;\r
	}\r
\r
	// generate interrupt for this job\r
	job--;\r
	gp2x_memregs[(0x3B20+job*2)>>1] = 1;\r
\r
//	printf("added %i, pending %04x\n", job+1, gp2x_memregs[0x3b46>>1]);\r
}\r
\r
\r
void YM2612PicoStateLoad_940(void)\r
{\r
	UINT8 *REGS = YM2612GetRegs();\r
\r
	/* make sure JOB940_PICOSTATELOAD gets done before next JOB940_YM2612UPDATEONE */\r
	add_job_940(JOB940_PICOSTATELOAD);\r
	if (CHECK_BUSY(JOB940_PICOSTATELOAD)) wait_busy_940(JOB940_PICOSTATELOAD);\r
\r
	writebuff_ptr = 0;\r
	addr_A1 = *(INT32 *) (REGS + 0x200);\r
}\r
\r
void YM2612PicoStateSave2_940(int tat, int tbt)\r
{\r
	UINT8 *ym_remote_regs, *ym_local_regs;\r
	add_job_940(JOB940_PICOSTATESAVE2);\r
	if (CHECK_BUSY(JOB940_PICOSTATESAVE2)) wait_busy_940(JOB940_PICOSTATESAVE2);\r
\r
	ym_remote_regs = (UINT8 *) shared_ctl->writebuff0;\r
	ym_local_regs  = YM2612GetRegs();\r
	if (*(UINT32 *)(ym_remote_regs + 0x100) != 0x41534d59) {\r
		printf("code940 didn't return valid save data\n");\r
		return;\r
	}\r
\r
	/* copy addin data only */\r
	memcpy(ym_local_regs,         ym_remote_regs,         0x20);\r
	memcpy(ym_local_regs + 0x100, ym_remote_regs + 0x100, 0x30);\r
	memcpy(ym_local_regs + 0x0b8, ym_remote_regs + 0x0b8, 0x48);\r
	memcpy(ym_local_regs + 0x1b8, ym_remote_regs + 0x1b8, 0x48);\r
	*(INT32 *)(ym_local_regs + 0x108) = tat;\r
	*(INT32 *)(ym_local_regs + 0x10c) = tbt;\r
}\r
\r
int YM2612PicoStateLoad2_940(int *tat, int *tbt)\r
{\r
	UINT8 *ym_remote_regs, *ym_local_regs;\r
	ym_local_regs  = YM2612GetRegs();\r
	ym_remote_regs = (UINT8 *) shared_ctl->writebuff0;\r
\r
	if (*(UINT32 *)(ym_local_regs + 0x100) != 0x41534d59)\r
		return -1;\r
\r
	*tat = *(INT32 *)(ym_local_regs + 0x108);\r
	*tbt = *(INT32 *)(ym_local_regs + 0x10c);\r
\r
	if (CHECK_BUSY(JOB940_YM2612UPDATEONE)) wait_busy_940(JOB940_YM2612UPDATEONE);\r
\r
	/* flush writes */\r
	if (shared_ctl->writebuffsel == 1) {\r
		shared_ctl->writebuff0[writebuff_ptr & 0xffff] = 0xffff;\r
	} else {\r
		shared_ctl->writebuff1[writebuff_ptr & 0xffff] = 0xffff;\r
	}\r
	shared_ctl->writebuffsel ^= 1;\r
	writebuff_ptr = 0;\r
	add_job_940(JOB940_PICOSTATELOAD2_PREP);\r
	if (CHECK_BUSY(JOB940_PICOSTATELOAD2_PREP)) wait_busy_940(JOB940_PICOSTATELOAD2_PREP);\r
\r
	memcpy(ym_remote_regs, ym_local_regs, 0x200);\r
\r
	add_job_940(JOB940_PICOSTATELOAD2);\r
	if (CHECK_BUSY(JOB940_PICOSTATELOAD2)) wait_busy_940(JOB940_PICOSTATELOAD2);\r
\r
	return 0;\r
}\r
\r
\r
static void internal_reset(void)\r
{\r
	writebuff_ptr = 0;\r
	ST_address = addr_A1 = -1;\r
}\r
\r
\r
/* this must be called after mmu hack, the allocated regions must not get cached */\r
void sharedmem940_init(void)\r
{\r
	if (shared_mem != NULL) return;\r
\r
	shared_mem = (unsigned char *) mmap(0, 0x210000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0x2000000);\r
	if (shared_mem == MAP_FAILED)\r
	{\r
		printf("mmap(shared_data) failed with %i\n", errno);\r
		exit(1);\r
	}\r
	shared_data = (_940_data_t *) (shared_mem+0x100000);\r
	/* this area must not get buffered on either side */\r
	shared_ctl =  (_940_ctl_t *)  (shared_mem+0x200000);\r
	mp3_mem = (unsigned char *) mmap(0, MP3_SIZE_MAX, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0x2400000);\r
	if (mp3_mem == MAP_FAILED)\r
	{\r
		printf("mmap(mp3_mem) failed with %i\n", errno);\r
		exit(1);\r
	}\r
	crashed_940 = 1;\r
}\r
\r
\r
void sharedmem940_finish(void)\r
{\r
	munmap(shared_mem, 0x210000);\r
	munmap(mp3_mem, MP3_SIZE_MAX);\r
	shared_mem = mp3_mem = NULL;\r
	shared_data = NULL;\r
	shared_ctl = NULL;\r
}\r
\r
\r
extern char **g_argv;\r
\r
void YM2612Init_940(int baseclock, int rate)\r
{\r
	printf("YM2612Init_940()\n");\r
	printf("Mem usage: shared_data: %i, shared_ctl: %i\n", sizeof(*shared_data), sizeof(*shared_ctl));\r
\r
	reset940(1, 2);\r
	pause940(1);\r
\r
	gp2x_memregs[0x3B40>>1] = 0;      // disable DUALCPU interrupts for 920\r
	gp2x_memregs[0x3B42>>1] = 1;      // enable  DUALCPU interrupts for 940\r
\r
	gp2x_memregl[0x4504>>2] = 0;        // make sure no FIQs will be generated\r
	gp2x_memregl[0x4508>>2] = ~(1<<26); // unmask DUALCPU ints in the undocumented 940's interrupt controller\r
\r
\r
	if (crashed_940)\r
	{\r
		unsigned char ucData[1024];\r
		int nRead, nLen = 0;\r
		char binpath[512];\r
		FILE *fp;\r
\r
		emu_make_path(binpath, CODE940_FILE, sizeof(binpath));\r
		fp = fopen(binpath, "rb");\r
		if(!fp)\r
		{\r
			memset(g_screen_ptr, 0, 320*240*2);\r
			text_out16(10, 100, "failed to open required file:");\r
			text_out16(10, 110, CODE940_FILE);\r
			gp2x_video_flip2();\r
			in_menu_wait(PBTN_MOK|PBTN_MBACK, 100);\r
			printf("failed to open %s\n", binpath);\r
			exit(1);\r
		}\r
\r
		while(1)\r
		{\r
			nRead = fread(ucData, 1, 1024, fp);\r
			if(nRead <= 0)\r
				break;\r
			memcpy(shared_mem + nLen, ucData, nRead);\r
			nLen += nRead;\r
		}\r
		fclose(fp);\r
		crashed_940 = 0;\r
	}\r
\r
	memset(shared_data, 0, sizeof(*shared_data));\r
	memset(shared_ctl,  0, sizeof(*shared_ctl));\r
\r
	/* cause local ym2612 to init REGS */\r
	YM2612Init_(baseclock, rate);\r
\r
	internal_reset();\r
\r
	loaded_mp3 = 0;\r
\r
	gp2x_memregs[0x3B46>>1] = 0xffff; // clear pending DUALCPU interrupts for 940\r
	gp2x_memregl[0x4500>>2] = 0xffffffff; // clear pending IRQs in SRCPND\r
	gp2x_memregl[0x4510>>2] = 0xffffffff; // clear pending IRQs in INTPND\r
\r
	/* start the 940 */\r
	reset940(0, 2);\r
	pause940(0);\r
\r
	// YM2612ResetChip_940(); // will be done on JOB940_YM2612INIT\r
\r
	/* now cause 940 to init it's ym2612 stuff */\r
	shared_ctl->baseclock = baseclock;\r
	shared_ctl->rate = rate;\r
	add_job_940(JOB940_INITALL);\r
}\r
\r
\r
void YM2612ResetChip_940(void)\r
{\r
	//printf("YM2612ResetChip_940()\n");\r
	if (shared_data == NULL) {\r
		printf("YM2612ResetChip_940: reset before init?\n");\r
		return;\r
	}\r
\r
	YM2612ResetChip_();\r
	internal_reset();\r
\r
	add_job_940(JOB940_YM2612RESETCHIP);\r
}\r
\r
\r
int YM2612UpdateOne_940(int *buffer, int length, int stereo, int is_buf_empty)\r
{\r
	int *ym_buf = shared_data->ym_buffer;\r
	int ym_active_chs;\r
\r
	//printf("YM2612UpdateOne_940()\n");\r
\r
	if (CHECK_BUSY(JOB940_YM2612UPDATEONE)) wait_busy_940(JOB940_YM2612UPDATEONE);\r
\r
	ym_active_chs = shared_ctl->ym_active_chs;\r
\r
	// mix in ym buffer. is_buf_empty means nobody mixed there anything yet and it may contain trash\r
	if (is_buf_empty && ym_active_chs) memcpy32(buffer, ym_buf, length<<stereo);\r
	else memset32(buffer, 0, length<<stereo);\r
\r
	if (shared_ctl->writebuffsel == 1) {\r
		shared_ctl->writebuff0[writebuff_ptr & 0xffff] = 0xffff;\r
	} else {\r
		shared_ctl->writebuff1[writebuff_ptr & 0xffff] = 0xffff;\r
	}\r
	writebuff_ptr = 0;\r
\r
	/* predict sample counter for next frame */\r
	if (PsndLen_exc_add) {\r
		length = PsndLen;\r
		if (PsndLen_exc_cnt + PsndLen_exc_add >= 0x10000) length++;\r
	}\r
\r
	/* give 940 ym job */\r
	shared_ctl->writebuffsel ^= 1;\r
	shared_ctl->length = length;\r
	shared_ctl->stereo = stereo;\r
\r
	add_job_940(JOB940_YM2612UPDATEONE);\r
\r
	return ym_active_chs;\r
}\r
\r
\r
/***********************************************************/\r
\r
static int mp3_samples_ready = 0, mp3_buffer_offs = 0;\r
static int mp3_play_bufsel = 0, mp3_job_started = 0;\r
\r
void mp3_update(int *buffer, int length, int stereo)\r
{\r
	int length_mp3;\r
\r
	if (!(PicoOpt & POPT_EXT_FM)) {\r
		mp3_update_local(buffer, length, stereo);\r
		return;\r
	}\r
\r
	// check if playback was started, track not ended\r
	if (loaded_mp3 == NULL || shared_ctl->mp3_offs >= shared_ctl->mp3_len)\r
		return;\r
\r
	length_mp3 = length;\r
	if (PsndRate == 22050) length_mp3 <<= 1;	// mp3s are locked to 44100Hz stereo\r
	else if (PsndRate == 11025) length_mp3 <<= 2;	// so make length 44100ish\r
\r
	/* do we have to wait? */\r
	if (mp3_job_started && mp3_samples_ready < length_mp3) {\r
		if (CHECK_BUSY(JOB940_MP3DECODE)) wait_busy_940(JOB940_MP3DECODE);\r
		mp3_job_started = 0;\r
		mp3_samples_ready += 1152;\r
	}\r
\r
	/* mix mp3 data, only stereo */\r
	if (mp3_samples_ready >= length_mp3)\r
	{\r
		int shr = 0;\r
		void (*mix_samples)(int *dest_buf, short *mp3_buf, int count) = mix_16h_to_32;\r
		if (PsndRate == 22050) { mix_samples = mix_16h_to_32_s1; shr = 1; }\r
		else if (PsndRate == 11025) { mix_samples = mix_16h_to_32_s2; shr = 2; }\r
\r
		if (1152 - mp3_buffer_offs >= length_mp3) {\r
			mix_samples(buffer, shared_data->mp3_buffer[mp3_play_bufsel] + mp3_buffer_offs*2, length<<1);\r
\r
			mp3_buffer_offs += length_mp3;\r
		} else {\r
			// collect samples from both buffers..\r
			int left = 1152 - mp3_buffer_offs;\r
			if (mp3_play_bufsel == 0)\r
			{\r
				mix_samples(buffer, shared_data->mp3_buffer[0] + mp3_buffer_offs*2, length<<1);\r
				mp3_buffer_offs = length_mp3 - left;\r
				mp3_play_bufsel = 1;\r
			} else {\r
				mix_samples(buffer, shared_data->mp3_buffer[1] + mp3_buffer_offs*2, (left>>shr)<<1);\r
				mp3_buffer_offs = length_mp3 - left;\r
				mix_samples(buffer + ((left>>shr)<<1),\r
					shared_data->mp3_buffer[0], (mp3_buffer_offs>>shr)<<1);\r
				mp3_play_bufsel = 0;\r
			}\r
		}\r
		mp3_samples_ready -= length_mp3;\r
	}\r
\r
	// ask to decode more if we already can\r
	if (!mp3_job_started)\r
	{\r
		mp3_job_started = 1;\r
		shared_ctl->mp3_buffsel ^= 1;\r
		add_job_940(JOB940_MP3DECODE);\r
	}\r
}\r
\r
\r
void mp3_start_play(FILE *f, int pos) // pos is 0-1023\r
{\r
	int byte_offs = 0;\r
\r
	if (!(PicoOpt & POPT_EN_MCD_CDDA) || f == NULL)\r
		return;\r
\r
	if (!(PicoOpt & POPT_EXT_FM)) {\r
		mp3_start_play_local(f, pos);\r
		return;\r
	}\r
\r
	if (loaded_mp3 != f)\r
	{\r
		if (PicoMessage != NULL)\r
		{\r
			fseek(f, 0, SEEK_END);\r
			if (ftell(f) > 2*1024*1024)\r
				PicoMessage("Loading MP3...");\r
		}\r
		fseek(f, 0, SEEK_SET);\r
		fread(mp3_mem, 1, MP3_SIZE_MAX, f);\r
		if (!feof(f)) printf("Warning: mp3 was too large, not all data loaded.\n");\r
		shared_ctl->mp3_len = ftell(f);\r
		loaded_mp3 = f;\r
\r
		if (PicoOpt & POPT_EXT_FM) {\r
			// as we are going to change 940's cacheable area, we must invalidate it's cache..\r
			if (CHECK_BUSY(JOB940_MP3DECODE)) wait_busy_940(JOB940_MP3DECODE);\r
			add_job_940(JOB940_INVALIDATE_DCACHE);\r
		}\r
		reset_timing = 1;\r
	}\r
\r
	// seek..\r
	if (pos) {\r
		byte_offs  = (shared_ctl->mp3_len << 6) >> 10;\r
		byte_offs *= pos;\r
		byte_offs >>= 6;\r
	}\r
	printf("  mp3 pos1024: %i, byte_offs %i/%i\n", pos, byte_offs, shared_ctl->mp3_len);\r
\r
	shared_ctl->mp3_offs = byte_offs;\r
\r
	// reset buffer pointers and stuff..\r
	mp3_samples_ready = mp3_buffer_offs = mp3_play_bufsel = 0;\r
	mp3_job_started = 0;\r
	shared_ctl->mp3_buffsel = 1; // will change to 0 on first decode\r
\r
	add_job_940(JOB940_MP3RESET);\r
	if (CHECK_BUSY(JOB940_MP3RESET)) wait_busy_940(JOB940_MP3RESET);\r
}\r
\r
Commit	Line	Data
6ab2f79c	1	// Code for communication with ARM940 and control of it.\r
	2	// (c) Copyright 2007, Grazvydas "notaz" Ignotas\r
	3	\r
720ee7f6	4	#include <stdio.h>\r
	5	#include <stdlib.h>\r
	6	#include <string.h>\r
	7	#include <unistd.h>\r
	8	#include <sys/mman.h>\r
	9	#include <sys/ioctl.h>\r
	10	#include <fcntl.h>\r
	11	#include <errno.h>\r
	12	\r
b30a8e67	13	#include "code940/940shared.h"\r
d572cbad	14	#include "soc_mmsp2.h"\r
d572cbad	15	#include "soc.h"\r
11f4e722	16	#include "../common/mp3.h"\r
c7a4ff64	17	#include "../common/arm_utils.h"\r
c7a4ff64	18	#include "../common/menu.h"\r
f013066e	19	#include "../common/emu.h"\r
b7911801	20	#include "../common/input.h"\r
f11bad75	21	#include "../../pico/pico_int.h"\r
	22	#include "../../pico/sound/ym2612.h"\r
	23	#include "../../pico/sound/mix.h"\r
49fe50f0	24	\r
720ee7f6	25	static unsigned char *shared_mem = 0;\r
720ee7f6	26	static _940_data_t *shared_data = 0;\r
edbb82f8	27	_940_ctl_t *shared_ctl = 0;\r
edbb82f8	28	unsigned char *mp3_mem = 0;\r
598e7c06	29	\r
60b4b403	30	#define MP3_SIZE_MAX (0x400000 + 0x800000) // 12M\r
389aa76e	31	#define CODE940_FILE "pico940_v3.bin"\r
720ee7f6	32	\r
	33	int crashed_940 = 0;\r
	34	\r
979ba09f	35	static FILE *loaded_mp3 = 0;\r
720ee7f6	36	\r
	37	/***********************************************************/\r
	38	\r
	39	#define MAXOUT (+32767)\r
	40	#define MINOUT (-32768)\r
	41	\r
	42	/* limitter */\r
	43	#define Limit(val, max,min) { \\r
	44	if ( val > max ) val = max; \\r
	45	else if ( val < min ) val = min; \\r
	46	}\r
	47	\r
	48	/* these will be managed locally on our side */\r
720ee7f6	49	static UINT8 ST_address; /* address register */\r
7481dd3a	50	static INT32 addr_A1; /* address line A1 */\r
720ee7f6	51	\r
	52	static int writebuff_ptr = 0;\r
	53	\r
	54	\r
720ee7f6	55	/* YM2612 write */\r
	56	/* a = address */\r
	57	/* v = value */\r
	58	/* returns 1 if sample affecting state changed */\r
7481dd3a	59	int YM2612Write_940(unsigned int a, unsigned int v, int scanline)\r
720ee7f6	60	{\r
79cad122	61	int upd = 1; /* the write affects sample generation */\r
720ee7f6	62	\r
720ee7f6	63	a &= 3;\r
720ee7f6	64	\r
79cad122	65	//printf("%05i:%03i: ym w ([%i] %02x)\n", Pico.m.frame_count, Pico.m.scanline, a, v);\r
79cad122	66	\r
389aa76e	67	switch (a)\r
389aa76e	68	{\r
7481dd3a	69	case 0: /* address port 0 */\r
	70	if (addr_A1 == 0 && ST_address == v)\r
	71	return 0; /* address already selected, don't send this command to 940 */\r
	72	ST_address = v;\r
	73	addr_A1 = 0;\r
	74	/* don't send DAC or timer related address changes to 940 */\r
	75	if (v == 0x24 \|\| v == 0x25 \|\| v == 0x26 \|\| v == 0x2a)\r
d032c15a	76	return 0;\r
7481dd3a	77	upd = 0;\r
7481dd3a	78	break;\r
720ee7f6	79	\r
7481dd3a	80	case 2: /* address port 1 */\r
7481dd3a	81	if (addr_A1 == 1 && ST_address == v)\r
720ee7f6	82	return 0;\r
7481dd3a	83	ST_address = v;\r
	84	addr_A1 = 1;\r
	85	upd = 0;\r
720ee7f6	86	break;\r
720ee7f6	87	}\r
720ee7f6	88	\r
79cad122	89	//printf("ym pass\n");\r
79cad122	90	\r
7481dd3a	91	if (currentConfig.EmuOpt & 4)\r
7481dd3a	92	{\r
79cad122	93	UINT16 *writebuff = shared_ctl->writebuffsel ? shared_ctl->writebuff0 : shared_ctl->writebuff1;\r
	94	\r
	95	/* detect rapid ym updates */\r
7481dd3a	96	if (upd && !(writebuff_ptr & 0x80000000) && scanline < 224)\r
7481dd3a	97	{\r
79cad122	98	int mid = Pico.m.pal ? 68 : 93;\r
7481dd3a	99	if (scanline > mid) {\r
7481dd3a	100	//printf("%05i:%03i: rapid ym\n", Pico.m.frame_count, scanline);\r
79cad122	101	writebuff[writebuff_ptr++ & 0xffff] = 0xfffe;\r
79cad122	102	writebuff_ptr \|= 0x80000000;\r
7481dd3a	103	//printf("%05i:%03i: ym w ([%02x] %02x, upd=%i)\n", Pico.m.frame_count, scanline, addr, v, upd);\r
720ee7f6	104	}\r
79cad122	105	}\r
	106	\r
	107	/* queue this write for 940 */\r
	108	if ((writebuff_ptr&0xffff) < 2047) {\r
	109	writebuff[writebuff_ptr++ & 0xffff] = (a<<8)\|v;\r
720ee7f6	110	} else {\r
d032c15a	111	printf("warning: writebuff_ptr > 2047 ([%i] %02x)\n", a, v);\r
720ee7f6	112	}\r
	113	}\r
	114	\r
	115	return 0; // cause the engine to do updates once per frame only\r
	116	}\r
	117	\r
720ee7f6	118	\r
edbb82f8	119	#define CHECK_BUSY(job) \\r
	120	(gp2x_memregs[0x3b46>>1] & (1<<(job-1)))\r
	121	\r
	122	static void wait_busy_940(int job)\r
720ee7f6	123	{\r
720ee7f6	124	int i;\r
720ee7f6	125	\r
edbb82f8	126	job--;\r
edbb82f8	127	for (i = 0; (gp2x_memregs[0x3b46>>1] & (1<<job)) && i < 0x10000; i++)\r
b30a8e67	128	spend_cycles(8*1024); // tested to be best for mp3 dec\r
720ee7f6	129	if (i < 0x10000) return;\r
	130	\r
	131	/* 940 crashed */\r
b30a8e67	132	printf("940 crashed (cnt: %i, ve: ", shared_ctl->loopc);\r
720ee7f6	133	for (i = 0; i < 8; i++)\r
	134	printf("%i ", shared_ctl->vstarts[i]);\r
	135	printf(")\n");\r
edbb82f8	136	printf("irq pending flags: DUALCPU %04x, SRCPND %08lx (see 26), INTPND %08lx\n",\r
49fe50f0	137	gp2x_memregs[0x3b46>>1], gp2x_memregl[0x4500>>2], gp2x_memregl[0x4510>>2]);\r
edbb82f8	138	printf("last lr: %08x, lastjob: %i\n", shared_ctl->last_lr, shared_ctl->lastjob);\r
49fe50f0	139	printf("trying to interrupt..\n");\r
49fe50f0	140	gp2x_memregs[0x3B3E>>1] = 0xffff;\r
edbb82f8	141	for (i = 0; gp2x_memregs[0x3b46>>1] && i < 0x10000; i++)\r
49fe50f0	142	spend_cycles(8*1024);\r
49fe50f0	143	printf("i = 0x%x\n", i);\r
edbb82f8	144	printf("irq pending flags: DUALCPU %04x, SRCPND %08lx (see 26), INTPND %08lx\n",\r
49fe50f0	145	gp2x_memregs[0x3b46>>1], gp2x_memregl[0x4500>>2], gp2x_memregl[0x4510>>2]);\r
edbb82f8	146	printf("last lr: %08x, lastjob: %i\n", shared_ctl->last_lr, shared_ctl->lastjob);\r
49fe50f0	147	\r
3ffee69c	148	me_update_msg("940 crashed, too much overclock?");\r
720ee7f6	149	engineState = PGS_Menu;\r
720ee7f6	150	crashed_940 = 1;\r
720ee7f6	151	}\r
	152	\r
	153	\r
edbb82f8	154	static void add_job_940(int job)\r
720ee7f6	155	{\r
edbb82f8	156	if (job <= 0 \|\| job > 16) {\r
	157	printf("add_job_940: bad job: %i\n", job);\r
	158	return;\r
49fe50f0	159	}\r
edbb82f8	160	\r
	161	// generate interrupt for this job\r
	162	job--;\r
	163	gp2x_memregs[(0x3B20+job*2)>>1] = 1;\r
	164	\r
	165	// printf("added %i, pending %04x\n", job+1, gp2x_memregs[0x3b46>>1]);\r
720ee7f6	166	}\r
	167	\r
	168	\r
	169	void YM2612PicoStateLoad_940(void)\r
	170	{\r
7481dd3a	171	UINT8 *REGS = YM2612GetRegs();\r
7481dd3a	172	\r
fb88e614	173	/* make sure JOB940_PICOSTATELOAD gets done before next JOB940_YM2612UPDATEONE */\r
	174	add_job_940(JOB940_PICOSTATELOAD);\r
	175	if (CHECK_BUSY(JOB940_PICOSTATELOAD)) wait_busy_940(JOB940_PICOSTATELOAD);\r
	176	\r
	177	writebuff_ptr = 0;\r
7481dd3a	178	addr_A1 = (INT32 ) (REGS + 0x200);\r
720ee7f6	179	}\r
720ee7f6	180	\r
389aa76e	181	void YM2612PicoStateSave2_940(int tat, int tbt)\r
	182	{\r
	183	UINT8 ym_remote_regs, ym_local_regs;\r
	184	add_job_940(JOB940_PICOSTATESAVE2);\r
	185	if (CHECK_BUSY(JOB940_PICOSTATESAVE2)) wait_busy_940(JOB940_PICOSTATESAVE2);\r
	186	\r
	187	ym_remote_regs = (UINT8 *) shared_ctl->writebuff0;\r
	188	ym_local_regs = YM2612GetRegs();\r
	189	if ((UINT32 )(ym_remote_regs + 0x100) != 0x41534d59) {\r
	190	printf("code940 didn't return valid save data\n");\r
	191	return;\r
	192	}\r
	193	\r
	194	/* copy addin data only */\r
	195	memcpy(ym_local_regs, ym_remote_regs, 0x20);\r
	196	memcpy(ym_local_regs + 0x100, ym_remote_regs + 0x100, 0x30);\r
	197	memcpy(ym_local_regs + 0x0b8, ym_remote_regs + 0x0b8, 0x48);\r
	198	memcpy(ym_local_regs + 0x1b8, ym_remote_regs + 0x1b8, 0x48);\r
	199	(INT32 )(ym_local_regs + 0x108) = tat;\r
	200	(INT32 )(ym_local_regs + 0x10c) = tbt;\r
	201	}\r
	202	\r
	203	int YM2612PicoStateLoad2_940(int tat, int tbt)\r
	204	{\r
	205	UINT8 ym_remote_regs, ym_local_regs;\r
	206	ym_local_regs = YM2612GetRegs();\r
	207	ym_remote_regs = (UINT8 *) shared_ctl->writebuff0;\r
	208	\r
	209	if ((UINT32 )(ym_local_regs + 0x100) != 0x41534d59)\r
	210	return -1;\r
	211	\r
	212	tat = (INT32 *)(ym_local_regs + 0x108);\r
	213	tbt = (INT32 *)(ym_local_regs + 0x10c);\r
	214	\r
	215	if (CHECK_BUSY(JOB940_YM2612UPDATEONE)) wait_busy_940(JOB940_YM2612UPDATEONE);\r
	216	\r
	217	/* flush writes */\r
	218	if (shared_ctl->writebuffsel == 1) {\r
	219	shared_ctl->writebuff0[writebuff_ptr & 0xffff] = 0xffff;\r
	220	} else {\r
	221	shared_ctl->writebuff1[writebuff_ptr & 0xffff] = 0xffff;\r
	222	}\r
	223	shared_ctl->writebuffsel ^= 1;\r
	224	writebuff_ptr = 0;\r
	225	add_job_940(JOB940_PICOSTATELOAD2_PREP);\r
	226	if (CHECK_BUSY(JOB940_PICOSTATELOAD2_PREP)) wait_busy_940(JOB940_PICOSTATELOAD2_PREP);\r
	227	\r
	228	memcpy(ym_remote_regs, ym_local_regs, 0x200);\r
	229	\r
	230	add_job_940(JOB940_PICOSTATELOAD2);\r
	231	if (CHECK_BUSY(JOB940_PICOSTATELOAD2)) wait_busy_940(JOB940_PICOSTATELOAD2);\r
	232	\r
	233	return 0;\r
	234	}\r
	235	\r
720ee7f6	236	\r
	237	static void internal_reset(void)\r
	238	{\r
	239	writebuff_ptr = 0;\r
7481dd3a	240	ST_address = addr_A1 = -1;\r
720ee7f6	241	}\r
	242	\r
	243	\r
52d3dd5f	244	/* this must be called after mmu hack, the allocated regions must not get cached */\r
fa5e045b	245	void sharedmem940_init(void)\r
52d3dd5f	246	{\r
	247	if (shared_mem != NULL) return;\r
	248	\r
	249	shared_mem = (unsigned char *) mmap(0, 0x210000, PROT_READ\|PROT_WRITE, MAP_SHARED, memdev, 0x2000000);\r
389aa76e	250	if (shared_mem == MAP_FAILED)\r
52d3dd5f	251	{\r
	252	printf("mmap(shared_data) failed with %i\n", errno);\r
	253	exit(1);\r
	254	}\r
	255	shared_data = (_940_data_t *) (shared_mem+0x100000);\r
	256	/* this area must not get buffered on either side */\r
	257	shared_ctl = (_940_ctl_t *) (shared_mem+0x200000);\r
60b4b403	258	mp3_mem = (unsigned char *) mmap(0, MP3_SIZE_MAX, PROT_READ\|PROT_WRITE, MAP_SHARED, memdev, 0x2400000);\r
52d3dd5f	259	if (mp3_mem == MAP_FAILED)\r
	260	{\r
	261	printf("mmap(mp3_mem) failed with %i\n", errno);\r
	262	exit(1);\r
	263	}\r
	264	crashed_940 = 1;\r
	265	}\r
	266	\r
	267	\r
fa5e045b	268	void sharedmem940_finish(void)\r
4dfd9f42	269	{\r
	270	munmap(shared_mem, 0x210000);\r
	271	munmap(mp3_mem, MP3_SIZE_MAX);\r
	272	shared_mem = mp3_mem = NULL;\r
	273	shared_data = NULL;\r
	274	shared_ctl = NULL;\r
	275	}\r
	276	\r
	277	\r
720ee7f6	278	extern char **g_argv;\r
720ee7f6	279	\r
720ee7f6	280	void YM2612Init_940(int baseclock, int rate)\r
	281	{\r
	282	printf("YM2612Init_940()\n");\r
8dfb9fd5	283	printf("Mem usage: shared_data: %i, shared_ctl: %i\n", sizeof(shared_data), sizeof(shared_ctl));\r
720ee7f6	284	\r
d572cbad	285	reset940(1, 2);\r
d572cbad	286	pause940(1);\r
720ee7f6	287	\r
49fe50f0	288	gp2x_memregs[0x3B40>>1] = 0; // disable DUALCPU interrupts for 920\r
49fe50f0	289	gp2x_memregs[0x3B42>>1] = 1; // enable DUALCPU interrupts for 940\r
720ee7f6	290	\r
edbb82f8	291	gp2x_memregl[0x4504>>2] = 0; // make sure no FIQs will be generated\r
	292	gp2x_memregl[0x4508>>2] = ~(1<<26); // unmask DUALCPU ints in the undocumented 940's interrupt controller\r
	293	\r
	294	\r
720ee7f6	295	if (crashed_940)\r
	296	{\r
	297	unsigned char ucData[1024];\r
b7911801	298	int nRead, nLen = 0;\r
45deb409	299	char binpath[512];\r
720ee7f6	300	FILE *fp;\r
720ee7f6	301	\r
45deb409	302	emu_make_path(binpath, CODE940_FILE, sizeof(binpath));\r
720ee7f6	303	fp = fopen(binpath, "rb");\r
	304	if(!fp)\r
	305	{\r
e31266dd	306	memset(g_screen_ptr, 0, 3202402);\r
13059a60	307	text_out16(10, 100, "failed to open required file:");\r
	308	text_out16(10, 110, CODE940_FILE);\r
	309	gp2x_video_flip2();\r
b7911801	310	in_menu_wait(PBTN_MOK\|PBTN_MBACK, 100);\r
720ee7f6	311	printf("failed to open %s\n", binpath);\r
	312	exit(1);\r
	313	}\r
	314	\r
	315	while(1)\r
	316	{\r
	317	nRead = fread(ucData, 1, 1024, fp);\r
	318	if(nRead <= 0)\r
	319	break;\r
	320	memcpy(shared_mem + nLen, ucData, nRead);\r
	321	nLen += nRead;\r
	322	}\r
	323	fclose(fp);\r
	324	crashed_940 = 0;\r
	325	}\r
	326	\r
	327	memset(shared_data, 0, sizeof(*shared_data));\r
	328	memset(shared_ctl, 0, sizeof(*shared_ctl));\r
	329	\r
31a77bde	330	/* cause local ym2612 to init REGS */\r
	331	YM2612Init_(baseclock, rate);\r
	332	\r
720ee7f6	333	internal_reset();\r
720ee7f6	334	\r
979ba09f	335	loaded_mp3 = 0;\r
979ba09f	336	\r
49fe50f0	337	gp2x_memregs[0x3B46>>1] = 0xffff; // clear pending DUALCPU interrupts for 940\r
edbb82f8	338	gp2x_memregl[0x4500>>2] = 0xffffffff; // clear pending IRQs in SRCPND\r
edbb82f8	339	gp2x_memregl[0x4510>>2] = 0xffffffff; // clear pending IRQs in INTPND\r
720ee7f6	340	\r
720ee7f6	341	/* start the 940 */\r
d572cbad	342	reset940(0, 2);\r
d572cbad	343	pause940(0);\r
720ee7f6	344	\r
720ee7f6	345	// YM2612ResetChip_940(); // will be done on JOB940_YM2612INIT\r
edbb82f8	346	\r
	347	/* now cause 940 to init it's ym2612 stuff */\r
	348	shared_ctl->baseclock = baseclock;\r
	349	shared_ctl->rate = rate;\r
	350	add_job_940(JOB940_INITALL);\r
720ee7f6	351	}\r
	352	\r
	353	\r
	354	void YM2612ResetChip_940(void)\r
	355	{\r
f76e88b5	356	//printf("YM2612ResetChip_940()\n");\r
720ee7f6	357	if (shared_data == NULL) {\r
	358	printf("YM2612ResetChip_940: reset before init?\n");\r
	359	return;\r
	360	}\r
	361	\r
7481dd3a	362	YM2612ResetChip_();\r
720ee7f6	363	internal_reset();\r
720ee7f6	364	\r
edbb82f8	365	add_job_940(JOB940_YM2612RESETCHIP);\r
720ee7f6	366	}\r
	367	\r
	368	\r
edbb82f8	369	int YM2612UpdateOne_940(int *buffer, int length, int stereo, int is_buf_empty)\r
598e7c06	370	{\r
edbb82f8	371	int *ym_buf = shared_data->ym_buffer;\r
4dfd9f42	372	int ym_active_chs;\r
49fe50f0	373	\r
edbb82f8	374	//printf("YM2612UpdateOne_940()\n");\r
	375	\r
	376	if (CHECK_BUSY(JOB940_YM2612UPDATEONE)) wait_busy_940(JOB940_YM2612UPDATEONE);\r
	377	\r
4dfd9f42	378	ym_active_chs = shared_ctl->ym_active_chs;\r
edbb82f8	379	\r
4dfd9f42	380	// mix in ym buffer. is_buf_empty means nobody mixed there anything yet and it may contain trash\r
	381	if (is_buf_empty && ym_active_chs) memcpy32(buffer, ym_buf, length<<stereo);\r
	382	else memset32(buffer, 0, length<<stereo);\r
edbb82f8	383	\r
edbb82f8	384	if (shared_ctl->writebuffsel == 1) {\r
79cad122	385	shared_ctl->writebuff0[writebuff_ptr & 0xffff] = 0xffff;\r
49fe50f0	386	} else {\r
79cad122	387	shared_ctl->writebuff1[writebuff_ptr & 0xffff] = 0xffff;\r
598e7c06	388	}\r
edbb82f8	389	writebuff_ptr = 0;\r
	390	\r
	391	/* predict sample counter for next frame */\r
	392	if (PsndLen_exc_add) {\r
2dce60fd	393	length = PsndLen;\r
2dce60fd	394	if (PsndLen_exc_cnt + PsndLen_exc_add >= 0x10000) length++;\r
edbb82f8	395	}\r
	396	\r
	397	/* give 940 ym job */\r
	398	shared_ctl->writebuffsel ^= 1;\r
	399	shared_ctl->length = length;\r
	400	shared_ctl->stereo = stereo;\r
	401	\r
	402	add_job_940(JOB940_YM2612UPDATEONE);\r
	403	\r
4dfd9f42	404	return ym_active_chs;\r
598e7c06	405	}\r
598e7c06	406	\r
598e7c06	407	\r
9615b3df	408	/***********************************************************/\r
9615b3df	409	\r
979ba09f	410	static int mp3_samples_ready = 0, mp3_buffer_offs = 0;\r
edbb82f8	411	static int mp3_play_bufsel = 0, mp3_job_started = 0;\r
598e7c06	412	\r
edbb82f8	413	void mp3_update(int *buffer, int length, int stereo)\r
720ee7f6	414	{\r
edbb82f8	415	int length_mp3;\r
720ee7f6	416	\r
9615b3df	417	if (!(PicoOpt & POPT_EXT_FM)) {\r
edbb82f8	418	mp3_update_local(buffer, length, stereo);\r
	419	return;\r
	420	}\r
720ee7f6	421	\r
9615b3df	422	// check if playback was started, track not ended\r
	423	if (loaded_mp3 == NULL \|\| shared_ctl->mp3_offs >= shared_ctl->mp3_len)\r
	424	return;\r
	425	\r
edbb82f8	426	length_mp3 = length;\r
	427	if (PsndRate == 22050) length_mp3 <<= 1; // mp3s are locked to 44100Hz stereo\r
	428	else if (PsndRate == 11025) length_mp3 <<= 2; // so make length 44100ish\r
49fe50f0	429	\r
edbb82f8	430	/* do we have to wait? */\r
	431	if (mp3_job_started && mp3_samples_ready < length_mp3) {\r
	432	if (CHECK_BUSY(JOB940_MP3DECODE)) wait_busy_940(JOB940_MP3DECODE);\r
	433	mp3_job_started = 0;\r
	434	mp3_samples_ready += 1152;\r
	435	}\r
598e7c06	436	\r
49fe50f0	437	/* mix mp3 data, only stereo */\r
edbb82f8	438	if (mp3_samples_ready >= length_mp3)\r
598e7c06	439	{\r
49fe50f0	440	int shr = 0;\r
	441	void (mix_samples)(int dest_buf, short *mp3_buf, int count) = mix_16h_to_32;\r
	442	if (PsndRate == 22050) { mix_samples = mix_16h_to_32_s1; shr = 1; }\r
	443	else if (PsndRate == 11025) { mix_samples = mix_16h_to_32_s2; shr = 2; }\r
598e7c06	444	\r
49fe50f0	445	if (1152 - mp3_buffer_offs >= length_mp3) {\r
edbb82f8	446	mix_samples(buffer, shared_data->mp3_buffer[mp3_play_bufsel] + mp3_buffer_offs*2, length<<1);\r
49fe50f0	447	\r
49fe50f0	448	mp3_buffer_offs += length_mp3;\r
598e7c06	449	} else {\r
edbb82f8	450	// collect samples from both buffers..\r
598e7c06	451	int left = 1152 - mp3_buffer_offs;\r
49fe50f0	452	if (mp3_play_bufsel == 0)\r
49fe50f0	453	{\r
edbb82f8	454	mix_samples(buffer, shared_data->mp3_buffer[0] + mp3_buffer_offs*2, length<<1);\r
49fe50f0	455	mp3_buffer_offs = length_mp3 - left;\r
	456	mp3_play_bufsel = 1;\r
	457	} else {\r
	458	mix_samples(buffer, shared_data->mp3_buffer[1] + mp3_buffer_offs*2, (left>>shr)<<1);\r
	459	mp3_buffer_offs = length_mp3 - left;\r
	460	mix_samples(buffer + ((left>>shr)<<1),\r
	461	shared_data->mp3_buffer[0], (mp3_buffer_offs>>shr)<<1);\r
	462	mp3_play_bufsel = 0;\r
	463	}\r
720ee7f6	464	}\r
49fe50f0	465	mp3_samples_ready -= length_mp3;\r
720ee7f6	466	}\r
720ee7f6	467	\r
edbb82f8	468	// ask to decode more if we already can\r
edbb82f8	469	if (!mp3_job_started)\r
598e7c06	470	{\r
edbb82f8	471	mp3_job_started = 1;\r
598e7c06	472	shared_ctl->mp3_buffsel ^= 1;\r
edbb82f8	473	add_job_940(JOB940_MP3DECODE);\r
598e7c06	474	}\r
720ee7f6	475	}\r
598e7c06	476	\r
598e7c06	477	\r
598e7c06	478	void mp3_start_play(FILE *f, int pos) // pos is 0-1023\r
	479	{\r
	480	int byte_offs = 0;\r
	481	\r
9615b3df	482	if (!(PicoOpt & POPT_EN_MCD_CDDA) \|\| f == NULL)\r
	483	return;\r
	484	\r
	485	if (!(PicoOpt & POPT_EXT_FM)) {\r
	486	mp3_start_play_local(f, pos);\r
598e7c06	487	return;\r
	488	}\r
	489	\r
	490	if (loaded_mp3 != f)\r
	491	{\r
dfa4c846	492	if (PicoMessage != NULL)\r
	493	{\r
	494	fseek(f, 0, SEEK_END);\r
	495	if (ftell(f) > 210241024)\r
	496	PicoMessage("Loading MP3...");\r
	497	}\r
598e7c06	498	fseek(f, 0, SEEK_SET);\r
598e7c06	499	fread(mp3_mem, 1, MP3_SIZE_MAX, f);\r
60b4b403	500	if (!feof(f)) printf("Warning: mp3 was too large, not all data loaded.\n");\r
598e7c06	501	shared_ctl->mp3_len = ftell(f);\r
598e7c06	502	loaded_mp3 = f;\r
edbb82f8	503	\r
6e507f76	504	if (PicoOpt & POPT_EXT_FM) {\r
edbb82f8	505	// as we are going to change 940's cacheable area, we must invalidate it's cache..\r
	506	if (CHECK_BUSY(JOB940_MP3DECODE)) wait_busy_940(JOB940_MP3DECODE);\r
	507	add_job_940(JOB940_INVALIDATE_DCACHE);\r
	508	}\r
8f1b51ef	509	reset_timing = 1;\r
598e7c06	510	}\r
	511	\r
	512	// seek..\r
	513	if (pos) {\r
	514	byte_offs = (shared_ctl->mp3_len << 6) >> 10;\r
	515	byte_offs *= pos;\r
	516	byte_offs >>= 6;\r
	517	}\r
6e507f76	518	printf(" mp3 pos1024: %i, byte_offs %i/%i\n", pos, byte_offs, shared_ctl->mp3_len);\r
598e7c06	519	\r
598e7c06	520	shared_ctl->mp3_offs = byte_offs;\r
979ba09f	521	\r
edbb82f8	522	// reset buffer pointers and stuff..\r
979ba09f	523	mp3_samples_ready = mp3_buffer_offs = mp3_play_bufsel = 0;\r
edbb82f8	524	mp3_job_started = 0;\r
979ba09f	525	shared_ctl->mp3_buffsel = 1; // will change to 0 on first decode\r
edbb82f8	526	\r
9615b3df	527	add_job_940(JOB940_MP3RESET);\r
9615b3df	528	if (CHECK_BUSY(JOB940_MP3RESET)) wait_busy_940(JOB940_MP3RESET);\r
98c9d8d9	529	}\r
98c9d8d9	530	\r