406 lines
11 KiB
C
406 lines
11 KiB
C
/*
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* PSP Software Development Kit - http://www.pspdev.org
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* -----------------------------------------------------------------------
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* Licensed under the BSD license, see LICENSE in PSPSDK root for details.
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*
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* main.c - Basic PRX template
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*
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* Copyright (c) 2005 Marcus R. Brown <mrbrown@ocgnet.org>
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* Copyright (c) 2005 James Forshaw <tyranid@gmail.com>
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* Copyright (c) 2005 John Kelley <ps2dev@kelley.ca>
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* 2012 dr_mabuse1981: well, i just kicked out Crow_bars shitty and buggy mp3 player
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* and re-added the kurok one again and added bakers mp3 fix ;)
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*
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* $Id: main.c 1888 2006-05-01 08:47:04Z tyranid $
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* $HeadURL$
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*/
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#include <pspkernel.h>
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#include <pspsdk.h>
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#include <stdio.h>
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#include <string.h>
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#include <pspaudiocodec.h>
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#include <pspaudio.h>
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#include "m33libs/kubridge.h"
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int mp3_last_error = 0;
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static int initialized = 0;
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static SceUID thread_job_sem = -1;
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static SceUID thread_busy_sem = -1;
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static int thread_exit = 0;
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int done = 0;
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int mp3_job_started = 0;
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int mp3_volume;
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static int mp3_src_pos = 0;
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int first_run = 0;
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// MPEG-1, layer 3
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static int bitrates[] = { 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 0 };
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//static int samplerates[] = { 44100, 48000, 32000, 0 };
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#define MIN_INFRAME_SIZE 96
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#define IN_BUFFER_SIZE (2*1024)
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static unsigned long mp3_codec_struct[65];// __attribute__((aligned(64)));
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static unsigned char mp3_src_buffer[2][IN_BUFFER_SIZE];// __attribute__((aligned(64)));
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static short mp3_mix_buffer[2][1152*2];// __attribute__((aligned(64)));
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static int working_buf = 0;
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static const char *mp3_fname = NULL;
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static SceUID mp3_handle = -1;
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static int mp3_src_size = 0;
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static int decode_thread(SceSize args, void *argp);
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extern int cd_loop;
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static void psp_sem_lock(SceUID sem)
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{
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int ret = sceKernelWaitSema(sem, 1, 0);
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if (ret < 0) printf("sceKernelWaitSema(%08x) failed with %08x\n", sem, ret);
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}
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static void psp_sem_unlock(SceUID sem)
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{
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int ret = sceKernelSignalSema(sem, 1);
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if (ret < 0) printf("sceKernelSignalSema(%08x) failed with %08x\n", sem, ret);
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}
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// only accepts MPEG-1, layer3
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static int find_sync_word(unsigned char *data, int len)
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{
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int i;
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for (i = 0; i < len-1; i++)
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{
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if ( data[i+0] != 0xff) continue;
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if ((data[i+1] & 0xfe) == 0xfa) return i;
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i++;
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}
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return -1;
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}
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// Baker: called only by decode_thread
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static int read_next_frame(int which_buffer)
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{
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int i, bytes_read, frame_offset;
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int bitrate, padding, frame_size = 0;
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for (i = 0; i < 32; i++)
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{
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bytes_read = sceIoRead(mp3_handle, mp3_src_buffer[which_buffer], sizeof(mp3_src_buffer[which_buffer]));
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mp3_src_pos += bytes_read;
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if (bytes_read < MIN_INFRAME_SIZE)
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{
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// cypress -- don't always loop.
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if (cd_loop == 0) {
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mp3_job_started = 0;
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return 0;
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}
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// Baker: end of file hit, restart + re-read
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mp3_src_pos = 0;
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sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
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bytes_read = sceIoRead(mp3_handle, mp3_src_buffer[which_buffer], sizeof(mp3_src_buffer[which_buffer]));
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mp3_src_pos += bytes_read;
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}
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frame_offset = find_sync_word(mp3_src_buffer[which_buffer], bytes_read);
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if (frame_offset < 0) {
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printf("missing syncword, foffs=%i\n", mp3_src_pos - bytes_read);
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mp3_src_pos--;
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sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
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continue;
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}
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if (bytes_read - frame_offset < 4) {
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printf("syncword @ EOB, foffs=%i\n", mp3_src_pos - bytes_read);
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mp3_src_pos--;
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sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
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continue;
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}
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bitrate = mp3_src_buffer[which_buffer][frame_offset+2] >> 4;
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padding = (mp3_src_buffer[which_buffer][frame_offset+2] & 2) >> 1;
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frame_size = 144000*bitrates[bitrate]/44100 + padding;
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if (frame_size <= 0) {
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printf("bad frame, foffs=%i\n", mp3_src_pos - bytes_read);
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continue; // bad frame
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}
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if (bytes_read - frame_offset < frame_size)
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{
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printf("unfit, foffs=%i\n", mp3_src_pos - bytes_read);
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mp3_src_pos -= bytes_read - frame_offset;
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if (mp3_src_size - mp3_src_pos < frame_size) {
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mp3_src_pos = mp3_src_size;
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return 0; // EOF
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}
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sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
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continue; // didn't fit, re-read..
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}
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if (frame_offset) {
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//printf("unaligned, foffs=%i, offs=%i\n", mp3_src_pos - bytes_read, frame_offset);
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memmove(mp3_src_buffer[which_buffer], mp3_src_buffer[which_buffer] + frame_offset, frame_size);
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}
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// align for next frame read
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mp3_src_pos -= bytes_read - (frame_offset + frame_size);
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sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
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break;
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}
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return frame_size > 0 ? frame_size : -1;
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}
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static SceUID load_start_module(const char *prxname)
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{
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SceUID mod, mod1;
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int status, ret;
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mod = pspSdkLoadStartModule(prxname, PSP_MEMORY_PARTITION_KERNEL);
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if (mod < 0) {
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printf("failed to load %s (%08x), trying kuKernelLoadModule\n", prxname, mod);
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mod1 = kuKernelLoadModule(prxname, 0, NULL);
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if (mod1 < 0) printf("kuKernelLoadModule failed with %08x\n", mod1);
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else {
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ret = sceKernelStartModule(mod1, 0, NULL, &status, 0);
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if (ret < 0) printf("sceKernelStartModule failed with %08x\n", ret);
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else mod = mod1;
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}
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}
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return mod;
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}
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int mp3_init(void)
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{
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SceUID thid, mod;
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int ret;
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/* load modules */
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/* <= 1.5 (and probably some other, not sure which) fw need this to for audiocodec to work,
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* so if it fails, assume we are just on new enough firmware and continue.. */
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load_start_module("flash0:/kd/me_for_vsh.prx");
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if (sceKernelDevkitVersion() < 0x02070010)
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mod = load_start_module("flash0:/kd/audiocodec.prx");
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else mod = load_start_module("flash0:/kd/avcodec.prx");
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if (mod < 0) {
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ret = mod = load_start_module("flash0:/kd/audiocodec_260.prx"); // last chance..
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if (mod < 0) goto fail;
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}
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/* audiocodec init */
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memset(mp3_codec_struct, 0, sizeof(mp3_codec_struct));
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ret = sceAudiocodecCheckNeedMem(mp3_codec_struct, 0x1002);
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if (ret < 0) {
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printf("sceAudiocodecCheckNeedMem failed with %08x\n", ret);
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goto fail;
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}
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ret = sceAudiocodecGetEDRAM(mp3_codec_struct, 0x1002);
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if (ret < 0) {
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printf("sceAudiocodecGetEDRAM failed with %08x\n", ret);
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goto fail;
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}
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ret = sceAudiocodecInit(mp3_codec_struct, 0x1002);
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if (ret < 0) {
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printf("sceAudiocodecInit failed with %08x\n", ret);
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goto fail1;
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}
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/* thread and stuff */
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thread_job_sem = sceKernelCreateSema("p_mp3job_sem", 0, 0, 1, NULL);
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if (thread_job_sem < 0) {
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printf("sceKernelCreateSema() failed: %08x\n", thread_job_sem);
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ret = thread_job_sem;
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goto fail1;
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}
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thread_busy_sem = sceKernelCreateSema("p_mp3busy_sem", 0, 1, 1, NULL);
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if (thread_busy_sem < 0) {
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printf("sceKernelCreateSema() failed: %08x\n", thread_busy_sem);
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ret = thread_busy_sem;
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goto fail2;
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}
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thread_exit = 0;
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thid = sceKernelCreateThread("mp3decode_thread", decode_thread, 30, 0x2000, 0, 0); /* use slightly higher prio then main */
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if (thid < 0) {
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printf("failed to create decode thread: %08x\n", thid);
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ret = thid;
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goto fail3;
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}
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ret = sceKernelStartThread(thid, 0, 0);
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if (ret < 0) {
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printf("failed to start decode thread: %08x\n", ret);
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goto fail3;
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}
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mp3_last_error = 0;
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initialized = 1;
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return 0;
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fail3:
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sceKernelDeleteSema(thread_busy_sem);
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thread_busy_sem = -1;
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fail2:
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sceKernelDeleteSema(thread_job_sem);
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thread_job_sem = -1;
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fail1:
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sceAudiocodecReleaseEDRAM(mp3_codec_struct);
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fail:
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mp3_last_error = ret;
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initialized = 0;
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return 1;
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}
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void mp3_deinit(void)
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{
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printf("mp3_deinit, initialized=%i\n", initialized);
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if (!initialized) return;
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thread_exit = 1;
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psp_sem_lock(thread_busy_sem);
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psp_sem_unlock(thread_busy_sem);
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sceKernelSignalSema(thread_job_sem, 1);
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sceKernelDelayThread(100*1000);
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if (mp3_handle >= 0) sceIoClose(mp3_handle);
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mp3_handle = -1;
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mp3_fname = NULL;
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psp_sem_lock(thread_job_sem);
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psp_sem_unlock(thread_job_sem);
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sceKernelDeleteSema(thread_busy_sem);
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thread_busy_sem = -1;
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sceKernelDeleteSema(thread_job_sem);
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thread_job_sem = -1;
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sceAudiocodecReleaseEDRAM(mp3_codec_struct);
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initialized = 0;
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}
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short mp3_output_buffer[4][1152 * 2] __attribute__((aligned(64)));
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int mp3_output_index = 0;
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// may overflow stack?
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static int decode_thread(SceSize args, void *argp)
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{
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int ret, frame_size;
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int audio_channel = sceAudioChReserve(1, 1152, PSP_AUDIO_FORMAT_STEREO);
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printf("decode_thread started with id %08x, priority %i\n",
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sceKernelGetThreadId(), sceKernelGetThreadCurrentPriority());
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while (!thread_exit)
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{
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psp_sem_lock(thread_job_sem);
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if (thread_exit) {
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psp_sem_unlock(thread_job_sem);
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break;
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}
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psp_sem_lock(thread_busy_sem);
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frame_size = read_next_frame(working_buf);
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while (mp3_job_started)
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{
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if (thread_exit) break;
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if(frame_size > 0)
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{
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mp3_codec_struct[6] = (unsigned long)mp3_src_buffer[working_buf];
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mp3_codec_struct[8] = (unsigned long)mp3_mix_buffer[working_buf];
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mp3_codec_struct[7] = mp3_codec_struct[10] = frame_size;
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mp3_codec_struct[9] = 1152 * 4;
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ret = sceAudiocodecDecode(mp3_codec_struct, 0x1002);
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if (ret < 0) printf("sceAudiocodecDecode failed with %08x\n", ret);
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memcpy(mp3_output_buffer[mp3_output_index], mp3_mix_buffer[working_buf], 1152*4);
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sceAudioOutputBlocking(audio_channel, mp3_volume, mp3_output_buffer[mp3_output_index]);
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mp3_output_index = (mp3_output_index+1)%4;
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memset(mp3_mix_buffer, 0, 1152*2*2);
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frame_size = read_next_frame(working_buf);
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}
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}
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if (!mp3_job_started) {
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if (mp3_handle >= 0) sceIoClose(mp3_handle);
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mp3_handle = -1;
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mp3_fname = NULL;
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}
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psp_sem_unlock(thread_busy_sem);
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}
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printf("leaving decode thread\n");
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sceKernelExitDeleteThread(0);
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return 0;
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}
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static int mp3_samples_ready = 0, mp3_buffer_offs = 0, mp3_play_bufsel = 0;
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int mp3_start_play(char *fname, int pos)
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{
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printf("mp3_start_play(%s) @ %i\n", fname, pos);
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psp_sem_lock(thread_busy_sem);
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if (mp3_fname != fname || mp3_handle < 0)
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{
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if (mp3_handle >= 0) sceIoClose(mp3_handle);
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mp3_handle = sceIoOpen(fname, PSP_O_RDONLY, 0777);
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if (mp3_handle < 0) {
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printf("sceIoOpen(%s) failed\n", fname);
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psp_sem_unlock(thread_busy_sem);
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sceIoClose(mp3_handle);
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return 2;
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}
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mp3_src_size = sceIoLseek32(mp3_handle, 0, PSP_SEEK_END);
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mp3_fname = fname;
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}
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// seek..
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mp3_src_pos = (int) (((float)pos / 1023.0f) * (float)mp3_src_size);
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sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
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printf("seek %i: %i/%i\n", pos, mp3_src_pos, mp3_src_size);
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mp3_job_started = 1;
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mp3_samples_ready = mp3_buffer_offs = mp3_play_bufsel = 0;
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working_buf = 0;
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/* send a request to decode first frame */
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psp_sem_unlock(thread_busy_sem);
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psp_sem_unlock(thread_job_sem);
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sceKernelDelayThread(1); // reschedule
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return 0;
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}
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