X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=psp%2Fmp3.c;h=f0cfe8f90488e181fbf51fd143d9c4bfaac2e1bf;hb=a6df06b7633a061862258ec47fa0f6b0efcbe26f;hp=ac00660cc57bcad98531b8d76007165972a2185c;hpb=16e89bed918ec39b1e43956b903f7986af86a6b2;p=libpicofe.git diff --git a/psp/mp3.c b/psp/mp3.c index ac00660..f0cfe8f 100644 --- a/psp/mp3.c +++ b/psp/mp3.c @@ -1,20 +1,442 @@ #include +#include -int mp3_get_bitrate(FILE *f, int size) +#include +#include +#include + +#include "../../Pico/PicoInt.h" +#include "../../Pico/sound/mix.h" +#include "../common/lprintf.h" + +int mp3_last_error = 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; + 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 = pspSdkLoadStartModule(prxname, PSP_MEMORY_PARTITION_KERNEL); + if (mod < 0) + lprintf("failed to load %s: %08x\n", prxname, mod); + 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 = 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; + } + + lprintf("thread_busy_sem: %08x, thread_job_sem: %08x\n", thread_busy_sem, thread_job_sem); + + thread_exit = 0; + thid = sceKernelCreateThread("mp3decode_thread", decode_thread, 30, 0x2000, 0, 0); /* use slightly higher prio then main */ + 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; 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; + return 1; } -void mp3_start_play(FILE *f, int pos) +void mp3_deinit(void) { + lprintf("deinit\n"); + 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); } -int mp3_get_offset(void) // 0-1023 +// 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; } + +int mp3_get_bitrate(FILE *f, int size) +{ + int ret = -1, sample_rate, bitrate; + // filenames are stored instead handles in PSP, due to stupid max open file limit + char *fname = (char *)f; + + /* make sure thread is not busy.. */ + 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\n"); + 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\n"); + goto end; // only 44kHz supported.. + } + bitrate = bitrates[bitrate]; + if (bitrate == 0) { + lprintf("unsupported bitrate\n"); + goto end; + } + + /* looking good.. */ + ret = bitrate; +end: + if (mp3_handle >= 0) sceIoClose(mp3_handle); + mp3_handle = -1; + mp3_fname = NULL; + psp_sem_unlock(thread_busy_sem); + if (ret < 0) mp3_last_error = -1; // remember we had a problem.. + return ret; +} + + +static int mp3_job_started = 0, mp3_samples_ready = 0, mp3_buffer_offs = 0, mp3_play_bufsel = 0; + +void mp3_start_play(FILE *f, int pos) +{ + char *fname = (char *)f; + + lprintf("mp3_start_play(%s) @ %i\n", fname, pos); + psp_sem_lock(thread_busy_sem); + + if (mp3_fname != fname) + { + 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; + } + + // 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 = (PicoMCD & 1) && (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; } +