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https://github.com/ekeeke/Genesis-Plus-GX.git
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537 lines
12 KiB
C
537 lines
12 KiB
C
/*
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Copyright (c) 2008 Francisco Muñoz 'Hermes' <www.elotrolado.net>
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All rights reserved.
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Proper (standard) vorbis usage by Tantric, 2009
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Threading modifications/corrections by Tantric, 2009
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Redistribution and use in source and binary forms, with or without modification, are
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permitted provided that the following conditions are met:
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- Redistributions of source code must retain the above copyright notice, this list of
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conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright notice, this list
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of conditions and the following disclaimer in the documentation and/or other
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materials provided with the distribution.
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- The names of the contributors may not be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "oggplayer.h"
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#include <gccore.h>
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#include <unistd.h>
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#include <string.h>
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/* functions to read the Ogg file from memory */
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static struct
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{
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char *mem;
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int size;
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int pos;
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} file[4];
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static int f_read(void * punt, int bytes, int blocks, int *f)
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{
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int b;
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int c;
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int d;
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if (bytes * blocks <= 0)
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return 0;
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blocks = bytes * blocks;
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c = 0;
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while (blocks > 0)
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{
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b = blocks;
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if (b > 4096)
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b = 4096;
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if (*f >= 0x666 && *f <= 0x669)
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{
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d = (*f) - 0x666;
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if (file[d].size == 0)
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return -1;
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if ((file[d].pos + b) > file[d].size)
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b = file[d].size - file[d].pos;
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if (b > 0)
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{
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memcpy(punt, file[d].mem + file[d].pos, b);
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file[d].pos += b;
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}
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}
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else
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b = read(*f, ((char *) punt) + c, b);
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if (b <= 0)
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{
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return c / bytes;
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}
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c += b;
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blocks -= b;
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}
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return c / bytes;
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}
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static int f_seek(int *f, ogg_int64_t offset, int mode)
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{
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if(f==NULL) return(-1);
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int k, d;
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mode &= 3;
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if (*f >= 0x666 && *f <= 0x669)
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{
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d = (*f) - 0x666;
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k = 0;
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if (file[d].size == 0)
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return -1;
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if (mode == 0)
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{
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if ((offset) >= file[d].size)
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{
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file[d].pos = file[d].size;
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k = -1;
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}
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else if ((offset) < 0)
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{
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file[d].pos = 0;
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k = -1;
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}
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else
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file[d].pos = offset;
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}
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if (mode == 1)
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{
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if ((file[d].pos + offset) >= file[d].size)
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{
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file[d].pos = file[d].size;
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k = -1;
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}
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else if ((file[d].pos + offset) < 0)
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{
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file[d].pos = 0;
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k = -1;
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}
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else
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file[d].pos += offset;
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}
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if (mode == 2)
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{
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if ((file[d].size + offset) >= file[d].size)
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{
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file[d].pos = file[d].size;
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k = -1;
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}
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else if ((file[d].size + offset) < 0)
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{
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file[d].pos = 0;
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k = -1;
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}
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else
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file[d].pos = file[d].size + offset;
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}
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}
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else
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k = lseek(*f, (int) offset, mode);
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if (k < 0)
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k = -1;
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else
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k = 0;
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return k;
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}
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static int f_close(int *f)
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{
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int d;
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if (*f >= 0x666 && *f <= 0x669)
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{
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d = (*f) - 0x666;
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file[d].size = 0;
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file[d].pos = 0;
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if (file[d].mem)
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{
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file[d].mem = (void *) 0;
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}
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return 0;
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}
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else
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return close(*f);
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return 0;
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}
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static long f_tell(int *f)
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{
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int k, d;
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if (*f >= 0x666 && *f <= 0x669)
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{
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d = (*f) - 0x666;
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k = file[d].pos;
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}
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else
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k = lseek(*f, 0, 1);
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return (long) k;
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}
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static int mem_open(char * ogg, int size)
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{
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static int one = 1;
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int n;
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if (one)
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{
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one = 0;
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for (n = 0; n < 4; n++)
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file[n].size = 0;
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}
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for (n = 0; n < 4; n++)
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{
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if (file[n].size == 0)
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{
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file[n].mem = ogg;
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file[n].size = size;
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file[n].pos = 0;
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return (0x666 + n);
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}
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}
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return -1;
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}
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static int mem_close(int fd)
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{
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if (fd >= 0x666 && fd <= 0x669) // it is a memory file descriptor?
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{
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fd -= 0x666;
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file[fd].size = 0;
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return 0;
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}
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else
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return f_close(&fd);
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}
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static ov_callbacks callbacks = {
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(size_t (*)(void *, size_t, size_t, void *)) f_read,
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(int (*)(void *, ogg_int64_t, int)) f_seek,
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(int (*)(void *)) f_close,
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(long (*)(void *)) f_tell
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};
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/* OGG control */
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#define READ_SAMPLES 4096 /* samples that it must read before to send */
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#define MAX_PCMOUT 4096 /* minimum size to read ogg samples */
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typedef struct
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{
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OggVorbis_File vf;
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vorbis_info *vi;
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int current_section;
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/* OGG file operation */
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int fd;
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int mode;
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int eof;
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int flag;
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int volume;
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int seek_time;
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/* OGG buffer control */
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short pcmout[2][READ_SAMPLES + MAX_PCMOUT * 2]; /* take 4k out of the data segment, not the stack */
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int pcmout_pos;
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int pcm_indx;
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} private_data_ogg;
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static private_data_ogg private_ogg;
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/* OGG thread control */
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#define STACKSIZE 8192
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static u8 oggplayer_stack[STACKSIZE];
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static lwpq_t oggplayer_queue = LWP_TQUEUE_NULL;
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static lwp_t h_oggplayer = LWP_THREAD_NULL;
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static int ogg_thread_running = 0;
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static void ogg_add_callback(int voice)
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{
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if (!ogg_thread_running)
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{
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ASND_StopVoice(0);
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return;
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}
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if (private_ogg.flag & 128)
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return; /* Ogg is paused */
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if (private_ogg.pcm_indx >= READ_SAMPLES)
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{
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if (ASND_AddVoice(0,
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(void *) private_ogg.pcmout[private_ogg.pcmout_pos],
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private_ogg.pcm_indx << 1) == 0)
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{
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private_ogg.pcmout_pos ^= 1;
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private_ogg.pcm_indx = 0;
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private_ogg.flag = 0;
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LWP_ThreadSignal(oggplayer_queue);
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}
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}
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else
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{
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if (private_ogg.flag & 64)
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{
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private_ogg.flag &= ~64;
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LWP_ThreadSignal(oggplayer_queue);
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}
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}
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}
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static void * ogg_player_thread(private_data_ogg * priv)
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{
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int first_time = 1;
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long ret;
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/* init */
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LWP_InitQueue(&oggplayer_queue);
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priv[0].vi = ov_info(&priv[0].vf, -1);
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ASND_Pause(0);
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priv[0].pcm_indx = 0;
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priv[0].pcmout_pos = 0;
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priv[0].eof = 0;
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priv[0].flag = 0;
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priv[0].current_section = 0;
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ogg_thread_running = 1;
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while (!priv[0].eof && ogg_thread_running)
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{
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if (priv[0].flag)
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LWP_ThreadSleep(oggplayer_queue); /* wait only when i have samples to send */
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if (priv[0].flag == 0) /* wait to all samples are sended */
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{
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if (ASND_TestPointer(0, priv[0].pcmout[priv[0].pcmout_pos])
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&& ASND_StatusVoice(0) != SND_UNUSED)
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{
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priv[0].flag |= 64;
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continue;
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}
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if (priv[0].pcm_indx < READ_SAMPLES)
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{
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priv[0].flag = 3;
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if (priv[0].seek_time >= 0)
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{
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ov_time_seek(&priv[0].vf, priv[0].seek_time);
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priv[0].seek_time = -1;
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}
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ret
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= ov_read(
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&priv[0].vf,
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(void *) &priv[0].pcmout[priv[0].pcmout_pos][priv[0].pcm_indx],
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MAX_PCMOUT,/*0,2,1,*/&priv[0].current_section);
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priv[0].flag &= 192;
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if (ret == 0)
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{
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/* EOF */
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if (priv[0].mode & 1)
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ov_time_seek(&priv[0].vf, 0); /* repeat */
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else
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priv[0].eof = 1; /* stops */
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}
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else if (ret < 0)
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{
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/* error in the stream. Not a problem, just reporting it in
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case we (the app) cares. In this case, we don't. */
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if (ret != OV_HOLE)
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{
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if (priv[0].mode & 1)
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ov_time_seek(&priv[0].vf, 0); /* repeat */
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else
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priv[0].eof = 1; /* stops */
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}
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}
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else
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{
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/* we don't bother dealing with sample rate changes, etc, but
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you'll have to */
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priv[0].pcm_indx += ret >> 1; /* get 16 bits samples */
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}
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}
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else
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priv[0].flag = 1;
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}
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if (priv[0].flag == 1)
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{
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if (ASND_StatusVoice(0) == SND_UNUSED || first_time)
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{
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first_time = 0;
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if (priv[0].vi->channels == 2)
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{
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ASND_SetVoice(0, VOICE_STEREO_16BIT, priv[0].vi->rate, 0,
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(void *) priv[0].pcmout[priv[0].pcmout_pos],
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priv[0].pcm_indx << 1, priv[0].volume,
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priv[0].volume, ogg_add_callback);
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priv[0].pcmout_pos ^= 1;
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priv[0].pcm_indx = 0;
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priv[0].flag = 0;
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}
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else
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{
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ASND_SetVoice(0, VOICE_MONO_16BIT, priv[0].vi->rate, 0,
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(void *) priv[0].pcmout[priv[0].pcmout_pos],
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priv[0].pcm_indx << 1, priv[0].volume,
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priv[0].volume, ogg_add_callback);
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priv[0].pcmout_pos ^= 1;
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priv[0].pcm_indx = 0;
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priv[0].flag = 0;
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}
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}
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}
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usleep(10);
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}
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ov_clear(&priv[0].vf);
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priv[0].fd = -1;
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priv[0].pcm_indx = 0;
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return 0;
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}
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void StopOgg()
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{
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ASND_StopVoice(0);
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ogg_thread_running = 0;
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if(h_oggplayer != LWP_THREAD_NULL)
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{
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if(oggplayer_queue != LWP_TQUEUE_NULL)
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LWP_ThreadSignal(oggplayer_queue);
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LWP_JoinThread(h_oggplayer, NULL);
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h_oggplayer = LWP_THREAD_NULL;
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}
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if(oggplayer_queue != LWP_TQUEUE_NULL)
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{
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LWP_CloseQueue(oggplayer_queue);
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oggplayer_queue = LWP_TQUEUE_NULL;
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}
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}
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int PlayOgg(char * buf, int buflen, int time_pos, int mode)
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{
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StopOgg();
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private_ogg.fd = mem_open(buf, buflen);
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if (private_ogg.fd < 0)
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{
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private_ogg.fd = -1;
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return -1;
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}
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private_ogg.mode = mode;
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private_ogg.eof = 0;
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private_ogg.volume = 127;
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private_ogg.flag = 0;
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private_ogg.seek_time = -1;
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if (time_pos > 0)
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private_ogg.seek_time = time_pos;
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if (ov_open_callbacks((void *) &private_ogg.fd, &private_ogg.vf, NULL, 0, callbacks) < 0)
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{
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mem_close(private_ogg.fd); /* mem_close() can too close files from devices */
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private_ogg.fd = -1;
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ogg_thread_running = 0;
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return -1;
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}
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if (LWP_CreateThread(&h_oggplayer, (void *) ogg_player_thread,
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&private_ogg, oggplayer_stack, STACKSIZE, 80) == -1)
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{
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ogg_thread_running = 0;
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ov_clear(&private_ogg.vf);
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private_ogg.fd = -1;
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return -1;
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}
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return 0;
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}
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void PauseOgg(int pause)
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{
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if (pause)
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{
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private_ogg.flag |= 128;
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}
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else
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{
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if (private_ogg.flag & 128)
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{
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private_ogg.flag |= 64;
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private_ogg.flag &= ~128;
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if (ogg_thread_running > 0)
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{
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LWP_ThreadSignal(oggplayer_queue);
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}
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}
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}
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}
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int StatusOgg()
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{
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if (ogg_thread_running == 0)
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return -1; /* Error */
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else if (private_ogg.eof)
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return 255; /* EOF */
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else if (private_ogg.flag & 128)
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return 2; /* paused */
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else
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return 1; /* running */
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}
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void SetVolumeOgg(int volume)
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{
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private_ogg.volume = volume;
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ASND_ChangeVolumeVoice(0, volume, volume);
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}
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s32 GetTimeOgg()
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{
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int ret;
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if (ogg_thread_running == 0 || private_ogg.fd < 0)
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return 0;
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ret = ((s32) ov_time_tell(&private_ogg.vf));
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if (ret < 0)
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ret = 0;
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return ret;
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}
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void SetTimeOgg(s32 time_pos)
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{
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if (time_pos >= 0)
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private_ogg.seek_time = time_pos;
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}
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