+++ /dev/null
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
-#include <stdio.h>
-#include <string.h>
-
-#include <pspkernel.h>
-#include <pspsdk.h>
-#include <pspaudiocodec.h>
-#include <kubridge.h>
-
-#include "../../pico/pico_int.h"
-#include "../../pico/sound/mix.h"
-#include "../common/lprintf.h"
-
-int mp3_last_error = 0;
-
-static int initialized = 0;
-static SceUID thread_job_sem = -1;
-static SceUID thread_busy_sem = -1;
-static int thread_exit = 0;
-
-// MPEG-1, layer 3
-static int bitrates[] = { 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 0 };
-//static int samplerates[] = { 44100, 48000, 32000, 0 };
-
-#define MIN_INFRAME_SIZE 96
-#define IN_BUFFER_SIZE (2*1024)
-
-static unsigned long mp3_codec_struct[65] __attribute__((aligned(64)));
-
-static unsigned char mp3_src_buffer[2][IN_BUFFER_SIZE] __attribute__((aligned(64)));
-static short mp3_mix_buffer[2][1152*2] __attribute__((aligned(64)));
-static int working_buf = 0;
-
-static const char *mp3_fname = NULL;
-static SceUID mp3_handle = -1;
-static int mp3_src_pos = 0, mp3_src_size = 0;
-
-static int decode_thread(SceSize args, void *argp);
-
-
-static void psp_sem_lock(SceUID sem)
-{
- int ret = sceKernelWaitSema(sem, 1, 0);
- if (ret < 0) lprintf("sceKernelWaitSema(%08x) failed with %08x\n", sem, ret);
-}
-
-static void psp_sem_unlock(SceUID sem)
-{
- int ret = sceKernelSignalSema(sem, 1);
- if (ret < 0) lprintf("sceKernelSignalSema(%08x) failed with %08x\n", sem, ret);
-}
-
-// only accepts MPEG-1, layer3
-static int find_sync_word(unsigned char *data, int len)
-{
- int i;
- for (i = 0; i < len-1; i++)
- {
- if ( data[i+0] != 0xff) continue;
- if ((data[i+1] & 0xfe) == 0xfa) return i;
- i++;
- }
- return -1;
-}
-
-static int read_next_frame(int which_buffer)
-{
- int i, bytes_read, frame_offset;
- int bitrate, padding, frame_size = 0;
-
- for (i = 0; i < 32; i++)
- {
- bytes_read = sceIoRead(mp3_handle, mp3_src_buffer[which_buffer], sizeof(mp3_src_buffer[which_buffer]));
- mp3_src_pos += bytes_read;
- if (bytes_read < MIN_INFRAME_SIZE) {
- mp3_src_pos = mp3_src_size;
- return 0; // EOF/IO failure
- }
- frame_offset = find_sync_word(mp3_src_buffer[which_buffer], bytes_read);
- if (frame_offset < 0) {
- lprintf("missing syncword, foffs=%i\n", mp3_src_pos - bytes_read);
- mp3_src_pos--;
- sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
- continue;
- }
- if (bytes_read - frame_offset < 4) {
- lprintf("syncword @ EOB, foffs=%i\n", mp3_src_pos - bytes_read);
- mp3_src_pos--;
- sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
- continue;
- }
-
- bitrate = mp3_src_buffer[which_buffer][frame_offset+2] >> 4;
- padding = (mp3_src_buffer[which_buffer][frame_offset+2] & 2) >> 1;
-
- frame_size = 144000*bitrates[bitrate]/44100 + padding;
- if (frame_size <= 0) {
- lprintf("bad frame, foffs=%i\n", mp3_src_pos - bytes_read);
- continue; // bad frame
- }
-
- if (bytes_read - frame_offset < frame_size)
- {
- lprintf("unfit, foffs=%i\n", mp3_src_pos - bytes_read);
- mp3_src_pos -= bytes_read - frame_offset;
- if (mp3_src_size - mp3_src_pos < frame_size) {
- mp3_src_pos = mp3_src_size;
- return 0; // EOF
- }
- sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
- continue; // didn't fit, re-read..
- }
-
- if (frame_offset) {
- //lprintf("unaligned, foffs=%i, offs=%i\n", mp3_src_pos - bytes_read, frame_offset);
- memmove(mp3_src_buffer[which_buffer], mp3_src_buffer[which_buffer] + frame_offset, frame_size);
- }
-
- // align for next frame read
- mp3_src_pos -= bytes_read - (frame_offset + frame_size);
- sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
-
- break;
- }
-
- return frame_size > 0 ? frame_size : -1;
-}
-
-
-static SceUID load_start_module(const char *prxname)
-{
- SceUID mod, mod1;
- int status, ret;
-
- mod = pspSdkLoadStartModule(prxname, PSP_MEMORY_PARTITION_KERNEL);
- if (mod < 0) {
- lprintf("failed to load %s (%08x), trying kuKernelLoadModule\n", prxname, mod);
- mod1 = kuKernelLoadModule(prxname, 0, NULL);
- if (mod1 < 0) lprintf("kuKernelLoadModule failed with %08x\n", mod1);
- else {
- ret = sceKernelStartModule(mod1, 0, NULL, &status, 0);
- if (ret < 0) lprintf("sceKernelStartModule failed with %08x\n", ret);
- else mod = mod1;
- }
- }
- return mod;
-}
-
-
-int mp3_init(void)
-{
- SceUID thid, mod;
- int ret;
-
- /* load modules */
- /* <= 1.5 (and probably some other, not sure which) fw need this to for audiocodec to work,
- * so if it fails, assume we are just on new enough firmware and continue.. */
- load_start_module("flash0:/kd/me_for_vsh.prx");
-
- if (sceKernelDevkitVersion() < 0x02070010)
- mod = load_start_module("flash0:/kd/audiocodec.prx");
- else mod = load_start_module("flash0:/kd/avcodec.prx");
- if (mod < 0) {
- ret = mod;
- mod = load_start_module("flash0:/kd/audiocodec_260.prx"); // last chance..
- if (mod < 0) goto fail;
- }
-
- /* audiocodec init */
- memset(mp3_codec_struct, 0, sizeof(mp3_codec_struct));
- ret = sceAudiocodecCheckNeedMem(mp3_codec_struct, 0x1002);
- if (ret < 0) {
- lprintf("sceAudiocodecCheckNeedMem failed with %08x\n", ret);
- goto fail;
- }
-
- ret = sceAudiocodecGetEDRAM(mp3_codec_struct, 0x1002);
- if (ret < 0) {
- lprintf("sceAudiocodecGetEDRAM failed with %08x\n", ret);
- goto fail;
- }
-
- ret = sceAudiocodecInit(mp3_codec_struct, 0x1002);
- if (ret < 0) {
- lprintf("sceAudiocodecInit failed with %08x\n", ret);
- goto fail1;
- }
-
- /* thread and stuff */
- thread_job_sem = sceKernelCreateSema("p_mp3job_sem", 0, 0, 1, NULL);
- if (thread_job_sem < 0) {
- lprintf("sceKernelCreateSema() failed: %08x\n", thread_job_sem);
- ret = thread_job_sem;
- goto fail1;
- }
-
- thread_busy_sem = sceKernelCreateSema("p_mp3busy_sem", 0, 1, 1, NULL);
- if (thread_busy_sem < 0) {
- lprintf("sceKernelCreateSema() failed: %08x\n", thread_busy_sem);
- ret = thread_busy_sem;
- goto fail2;
- }
-
- /* use slightly higher prio then main */
- thread_exit = 0;
- thid = sceKernelCreateThread("mp3decode_thread", decode_thread, 30, 0x2000, 0, NULL);
- if (thid < 0) {
- lprintf("failed to create decode thread: %08x\n", thid);
- ret = thid;
- goto fail3;
- }
- ret = sceKernelStartThread(thid, 0, 0);
- if (ret < 0) {
- lprintf("failed to start decode thread: %08x\n", ret);
- goto fail3;
- }
-
- mp3_last_error = 0;
- initialized = 1;
- return 0;
-
-fail3:
- sceKernelDeleteSema(thread_busy_sem);
- thread_busy_sem = -1;
-fail2:
- sceKernelDeleteSema(thread_job_sem);
- thread_job_sem = -1;
-fail1:
- sceAudiocodecReleaseEDRAM(mp3_codec_struct);
-fail:
- mp3_last_error = ret;
- initialized = 0;
- return 1;
-}
-
-void mp3_deinit(void)
-{
- lprintf("mp3_deinit, initialized=%i\n", initialized);
-
- if (!initialized) return;
- thread_exit = 1;
- psp_sem_lock(thread_busy_sem);
- psp_sem_unlock(thread_busy_sem);
-
- sceKernelSignalSema(thread_job_sem, 1);
- sceKernelDelayThread(100*1000);
-
- if (mp3_handle >= 0) sceIoClose(mp3_handle);
- mp3_handle = -1;
- mp3_fname = NULL;
-
- sceKernelDeleteSema(thread_busy_sem);
- thread_busy_sem = -1;
- sceKernelDeleteSema(thread_job_sem);
- thread_job_sem = -1;
- sceAudiocodecReleaseEDRAM(mp3_codec_struct);
- initialized = 0;
-}
-
-// may overflow stack?
-static int decode_thread(SceSize args, void *argp)
-{
- int ret, frame_size;
-
- lprintf("decode_thread started with id %08x, priority %i\n",
- sceKernelGetThreadId(), sceKernelGetThreadCurrentPriority());
-
- while (!thread_exit)
- {
- psp_sem_lock(thread_job_sem);
- if (thread_exit) break;
-
- psp_sem_lock(thread_busy_sem);
- //lprintf("{ job\n");
-
- frame_size = read_next_frame(working_buf);
- if (frame_size > 0)
- {
- mp3_codec_struct[6] = (unsigned long)mp3_src_buffer[working_buf];
- mp3_codec_struct[8] = (unsigned long)mp3_mix_buffer[working_buf];
- mp3_codec_struct[7] = mp3_codec_struct[10] = frame_size;
- mp3_codec_struct[9] = 1152 * 4;
-
- ret = sceAudiocodecDecode(mp3_codec_struct, 0x1002);
- if (ret < 0) lprintf("sceAudiocodecDecode failed with %08x\n", ret);
- }
-
- //lprintf("} job\n");
- psp_sem_unlock(thread_busy_sem);
- }
-
- lprintf("leaving decode thread\n");
- sceKernelExitDeleteThread(0);
- return 0;
-}
-
-
-// might be called before initialization
-int mp3_get_bitrate(void *f, int size)
-{
- int ret, retval = -1, sample_rate, bitrate;
- // filenames are stored instead handles in PSP, due to stupid max open file limit
- char *fname = f;
-
- /* make sure thread is not busy.. */
- if (thread_busy_sem >= 0)
- psp_sem_lock(thread_busy_sem);
-
- if (mp3_handle >= 0) sceIoClose(mp3_handle);
- mp3_handle = sceIoOpen(fname, PSP_O_RDONLY, 0777);
- if (mp3_handle < 0) {
- lprintf("sceIoOpen(%s) failed\n", fname);
- goto end;
- }
-
- mp3_src_pos = 0;
- ret = read_next_frame(0);
- if (ret <= 0) {
- lprintf("read_next_frame() failed (%s)\n", fname);
- goto end;
- }
- sample_rate = (mp3_src_buffer[0][2] & 0x0c) >> 2;
- bitrate = mp3_src_buffer[0][2] >> 4;
-
- if (sample_rate != 0) {
- lprintf("unsupported samplerate (%s)\n", fname);
- goto end; // only 44kHz supported..
- }
- bitrate = bitrates[bitrate];
- if (bitrate == 0) {
- lprintf("unsupported bitrate (%s)\n", fname);
- goto end;
- }
-
- /* looking good.. */
- retval = bitrate;
-end:
- if (mp3_handle >= 0) sceIoClose(mp3_handle);
- mp3_handle = -1;
- mp3_fname = NULL;
- if (thread_busy_sem >= 0)
- psp_sem_unlock(thread_busy_sem);
- if (retval < 0) mp3_last_error = -1; // remember we had a problem..
- return retval;
-}
-
-
-static int mp3_job_started = 0, mp3_samples_ready = 0, mp3_buffer_offs = 0, mp3_play_bufsel = 0;
-
-void mp3_start_play(void *f, int pos)
-{
- char *fname = f;
-
- if (!initialized) return;
-
- lprintf("mp3_start_play(%s) @ %i\n", fname, pos);
- psp_sem_lock(thread_busy_sem);
-
- if (mp3_fname != fname || mp3_handle < 0)
- {
- if (mp3_handle >= 0) sceIoClose(mp3_handle);
- mp3_handle = sceIoOpen(fname, PSP_O_RDONLY, 0777);
- if (mp3_handle < 0) {
- lprintf("sceIoOpen(%s) failed\n", fname);
- psp_sem_unlock(thread_busy_sem);
- return;
- }
- mp3_src_size = sceIoLseek32(mp3_handle, 0, PSP_SEEK_END);
- mp3_fname = fname;
- }
-
- // clear decoder state
- sceAudiocodecInit(mp3_codec_struct, 0x1002);
-
- // seek..
- mp3_src_pos = (int) (((float)pos / 1023.0f) * (float)mp3_src_size);
- sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
- lprintf("seek %i: %i/%i\n", pos, mp3_src_pos, mp3_src_size);
-
- mp3_job_started = 1;
- mp3_samples_ready = mp3_buffer_offs = mp3_play_bufsel = 0;
- working_buf = 0;
-
- /* send a request to decode first frame */
- psp_sem_unlock(thread_busy_sem);
- psp_sem_unlock(thread_job_sem);
- sceKernelDelayThread(1); // reschedule
-}
-
-
-void mp3_update(int *buffer, int length, int stereo)
-{
- int length_mp3;
-
- // playback was started, track not ended
- if (mp3_handle < 0 || mp3_src_pos >= mp3_src_size) return;
-
- length_mp3 = length;
- if (PsndRate == 22050) length_mp3 <<= 1; // mp3s are locked to 44100Hz stereo
- else if (PsndRate == 11025) length_mp3 <<= 2; // so make length 44100ish
-
- /* do we have to wait? */
- if (mp3_job_started && mp3_samples_ready < length_mp3)
- {
- psp_sem_lock(thread_busy_sem);
- psp_sem_unlock(thread_busy_sem);
- mp3_job_started = 0;
- mp3_samples_ready += 1152;
- }
-
- /* mix mp3 data, only stereo */
- if (mp3_samples_ready >= length_mp3)
- {
- int shr = 0;
- void (*mix_samples)(int *dest_buf, short *mp3_buf, int count) = mix_16h_to_32;
- if (PsndRate == 22050) { mix_samples = mix_16h_to_32_s1; shr = 1; }
- else if (PsndRate == 11025) { mix_samples = mix_16h_to_32_s2; shr = 2; }
-
- if (1152 - mp3_buffer_offs >= length_mp3) {
- mix_samples(buffer, mp3_mix_buffer[mp3_play_bufsel] + mp3_buffer_offs*2, length<<1);
-
- mp3_buffer_offs += length_mp3;
- } else {
- // collect samples from both buffers..
- int left = 1152 - mp3_buffer_offs;
- if (mp3_play_bufsel == 0)
- {
- mix_samples(buffer, mp3_mix_buffer[0] + mp3_buffer_offs*2, length<<1);
- mp3_buffer_offs = length_mp3 - left;
- mp3_play_bufsel = 1;
- } else {
- mix_samples(buffer, mp3_mix_buffer[1] + mp3_buffer_offs*2, (left>>shr)<<1);
- mp3_buffer_offs = length_mp3 - left;
- mix_samples(buffer + ((left>>shr)<<1),
- mp3_mix_buffer[0], (mp3_buffer_offs>>shr)<<1);
- mp3_play_bufsel = 0;
- }
- }
- mp3_samples_ready -= length_mp3;
- }
-
- // ask to decode more if we already can
- if (!mp3_job_started)
- {
- mp3_job_started = 1;
- working_buf ^= 1;
-
- /* next job.. */
- psp_sem_lock(thread_busy_sem); // just in case
- psp_sem_unlock(thread_busy_sem);
- psp_sem_unlock(thread_job_sem);
- sceKernelDelayThread(1);
- }
-}
-
-
-int mp3_get_offset(void) // 0-1023
-{
- unsigned int offs1024 = 0;
- int cdda_on;
-
- cdda_on = (PicoAHW & PAHW_MCD) && (PicoOpt&0x800) && !(Pico_mcd->s68k_regs[0x36] & 1) &&
- (Pico_mcd->scd.Status_CDC & 1) && mp3_handle >= 0;
-
- if (cdda_on) {
- offs1024 = mp3_src_pos << 7;
- offs1024 /= mp3_src_size >> 3;
- }
- lprintf("offs1024=%u (%i/%i)\n", offs1024, mp3_src_pos, mp3_src_size);
-
- return offs1024;
-}
-
-
-void mp3_reopen_file(void)
-{
- if (mp3_fname == NULL) return;
- lprintf("mp3_reopen_file(%s)\n", mp3_fname);
-
- // try closing, just in case
- if (mp3_handle >= 0) sceIoClose(mp3_handle);
-
- mp3_handle = sceIoOpen(mp3_fname, PSP_O_RDONLY, 0777);
- if (mp3_handle >= 0)
- sceIoLseek32(mp3_handle, mp3_src_pos, PSP_SEEK_SET);
- lprintf("mp3_reopen_file %s\n", mp3_handle >= 0 ? "ok" : "failed");
-}
-
notaz.gp2x.de / libpicofe.git / blobdiff