*/
#include "main_em.h"
-
-
-#if defined(AUDIO_UNIX_NATIVE)
-
-#if defined(PLATFORM_LINUX) || defined(PLATFORM_BSD)
-
-#ifdef PLATFORM_LINUX
-#include <sys/ioctl.h>
-#include <sys/soundcard.h>
-#endif
-
-#ifdef PLATFORM_BSD
-#include <ioctl.h>
-#include <soundcard.h>
-#endif
-
-static char audioname[] = "/dev/audio";
-
-static const int sound_priority[SAMPLE_MAX] =
-{
- SAMPLE_exit_open,
- SAMPLE_exit_leave,
- SAMPLE_die,
- SAMPLE_time,
- SAMPLE_boom,
- SAMPLE_tick,
- SAMPLE_collect,
- SAMPLE_roll,
- SAMPLE_push,
- SAMPLE_dynamite,
- SAMPLE_press,
- SAMPLE_door,
- SAMPLE_dirt,
- SAMPLE_blank,
- SAMPLE_android_clone,
- SAMPLE_android_move,
- SAMPLE_ball,
- SAMPLE_grow,
- SAMPLE_squash,
- SAMPLE_wonderfall,
- SAMPLE_crack,
- SAMPLE_slurp,
- SAMPLE_drip,
- SAMPLE_wonder,
- SAMPLE_wheel,
- SAMPLE_stone,
- SAMPLE_spring,
- SAMPLE_diamond,
- SAMPLE_nut,
- SAMPLE_bug,
- SAMPLE_tank,
- SAMPLE_eater,
- SAMPLE_eater_eat,
- SAMPLE_alien,
- SAMPLE_acid
-};
-
-int sound_thread(void)
-{
- int audio_fd; /* file descriptor of /dev/audio or -1 if not open */
- int audio_format;
- // int sample_rate;
- int fragment_size;
- unsigned char *audio_buffer; /* actual buffer pumped to /dev/audio */
- short *mix_buffer;
-
- char sound_play[SAMPLE_MAX]; /* if set, we should be playing these sounds */
- int sound_pos[SAMPLE_MAX]; /* position in the sound */
- int mix_play[MIXER_MAX]; /* which sounds we have chosen to mix (calculated each time) */
- int mix_count;
- int i;
-
- loop:
-
- audio_fd = -1;
- audio_format = AUDIO_ULAW; /* defaults for non-OSS /dev/audio */
- // sample_rate = 8000;
- fragment_size = 256;
- audio_buffer = 0;
- mix_buffer = 0;
- mix_count = 0;
-
- clear_mem(sound_play, sizeof(sound_play)); /* not playing any sounds */
-
- for (;;)
- {
- for (;;)
- {
-
- /* pick sounds to play, if any */
- if (sound_play[SAMPLE_exit_open] ||
- sound_play[SAMPLE_exit_leave] ||
- sound_play[SAMPLE_die])
- sound_play[SAMPLE_boom] = 0; /* no explosions if player goes home */
-
- mix_count = 0;
- for (i = 0; i < SAMPLE_MAX; i++)
- {
- if (sound_play[sound_priority[i]])
- {
- mix_play[mix_count++] = sound_priority[i];
-
- if (mix_count == MIXER_MAX)
- break; /* cant mix too many sounds at once */
- }
- }
-
- /* check for incoming messages */
- if (mix_count || audio_fd != -1)
- {
- /* dont block if we are playing sounds */
- fd_set rfds;
- struct timeval tv;
- FD_ZERO(&rfds);
- FD_SET(sound_pipe[0], &rfds);
- tv.tv_sec = 0;
- tv.tv_usec = 0; /* (900000 * fragment_size / sample_rate) */
- i = select(sound_pipe[0] + 1, &rfds, 0, 0, &tv); /* dont block */
-
- if (i == -1)
- {
- Error(ERR_WARN, "select() failed in sound thread");
-
- goto fail;
- }
-
- if (i == 0)
- break; /* no messages */
- }
-
- /* get a message and start a sound */
- i = read(sound_pipe[0], &play, sizeof(play));
-
- if (i == -1)
- {
- Error(ERR_WARN, "read() failed in sound thread");
-
- goto fail;
- }
-
- if (i == 0)
- {
- Error(ERR_WARN, "reading sound failed in sound thread");
-
- goto fail;
- }
-
- if (i != sizeof(play))
- {
- Error(ERR_WARN, "bad message length in sound thread");
-
- goto fail;
- }
-
- for (i = 0; i < SAMPLE_MAX; i++)
- {
- if (play[i])
- {
- sound_play[i] = 1; /* play this sound */
- sound_pos[i] = 0; /* start it from the start */
- }
- }
- }
-
- /* open the audio device if there are sounds to play */
- if (mix_count && audio_fd == -1)
- {
- audio_fd = open(audioname, O_WRONLY);
-
- if (audio_fd == -1)
- goto reset;
-
-#ifdef OPEN_SOUND_SYSTEM
- i = 0x00020008;
-
- if (ioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &i) == -1)
- {
- Error(ERR_WARN, "unable to set fragment size in sound thread");
-
- goto reset;
- }
-
- if (ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &i) == -1)
- {
- Error(ERR_WARN, "unable to query audio format in sound thread");
-
- goto reset;
- }
-
- /* prefer 8 bit unsigned and fall back on mu-law */
- audio_format = (i & AFMT_U8) ? AFMT_U8 : AFMT_MU_LAW;
-
- i = audio_format;
- if (ioctl(audio_fd, SNDCTL_DSP_SETFMT, &i) == -1)
- {
- Error(ERR_WARN, "unable to set audio format in sound thread");
-
- goto reset;
- }
-
- if (i == AFMT_MU_LAW)
- {
- audio_format = AUDIO_ULAW;
- }
- else if (i == AFMT_U8)
- {
- audio_format = AUDIO_U8;
- }
- else
- {
- Error(ERR_WARN, "audio format required by device not supported");
-
- goto reset;
- }
-
- i = 1;
- if (ioctl(audio_fd, SNDCTL_DSP_CHANNELS, &i) == -1)
- {
- Error(ERR_WARN, "unable to set channels to mono in sound thread");
-
- goto reset;
- }
-
- if (i != 1)
- {
- Error(ERR_WARN, "channels required by device not supported");
-
- goto reset;
- }
-
- i = 8000;
- if (ioctl(audio_fd, SNDCTL_DSP_SPEED, &i) == -1)
- {
- Error(ERR_WARN, "unable to set sampling rate in sound thread");
-
- goto reset;
- }
-
- // sample_rate = i;
- if (ioctl(audio_fd, SNDCTL_DSP_GETBLKSIZE, &i) == -1)
- {
- Error(ERR_WARN, "unable to get block size in sound thread");
-
- goto reset;
- }
-
- fragment_size = i;
-
-#else
- if (fcntl(audio_fd, F_SETFL, O_NONBLOCK) == -1)
- {
- Error(ERR_WARN, "unable to make audio non blocking in sound thread");
-
- goto reset;
- }
-
-#endif /* OPEN_SOUND_SYSTEM */
-
- audio_buffer = malloc(fragment_size * sizeof(*audio_buffer));
- if (audio_buffer == 0)
- {
- Error(ERR_WARN, "unable to malloc audio buffer in sound thread");
-
- goto fail;
- }
-
- mix_buffer = malloc(fragment_size * sizeof(*mix_buffer));
- if (mix_buffer == 0)
- {
- Error(ERR_WARN, "unable to malloc mixing buffer in sound thread");
-
- goto fail;
- }
- }
-
- /* close the audio device if no sounds are playing */
- if (mix_count == 0 && audio_fd != -1)
- {
- close(audio_fd);
- free(audio_buffer);
- free(mix_buffer);
- audio_fd = -1;
- audio_buffer = 0;
- mix_buffer = 0;
- }
-
- /* if we are playing sounds and the audio device is open, mix them */
- if (mix_count && audio_fd != -1)
- {
- /* prepare mix buffer */
- clear_mem(mix_buffer, fragment_size * sizeof(*mix_buffer));
-
- for (i = 0; i < mix_count; i++)
- {
- register short *mix_ptr = mix_buffer;
- register short *sound_ptr =
- sound_data[mix_play[i]] + sound_pos[mix_play[i]];
- register int count =
- sound_length[mix_play[i]] - sound_pos[mix_play[i]];
-
- if (count > fragment_size)
- count = fragment_size;
-
- while (count--)
- *mix_ptr++ += *sound_ptr++; /* mix the sounds in */
- }
-
- switch(audio_format)
- {
- case AUDIO_ULAW:
- for (i = 0; i < fragment_size; i++)
- audio_buffer[i] = linear_to_ulaw[mix_buffer[i] + 32768];
- break;
-
- case AUDIO_U8:
- for (i = 0; i < fragment_size; i++)
- audio_buffer[i] = (mix_buffer[i] + 32768) >> 8;
- break;
- }
-
- /* advance sound pointers */
- for (i = 0; i < SAMPLE_MAX; i++)
- {
- if (sound_play[i])
- {
- if (sound_pos[i] + fragment_size < sound_length[i])
- {
- sound_pos[i] += fragment_size;
- }
- else
- {
- sound_play[i] = 0;
- }
- }
- }
-
- /* send the data to the audio device */
- i = write(audio_fd, audio_buffer, fragment_size);
- if (i == -1)
- {
- Error(ERR_WARN, "cannot write to audio device in sound thread");
-
- goto reset;
- }
-
- if (i != fragment_size)
- {
- Error(ERR_WARN, "bad write length to audio device in sound thread");
-
- goto reset;
- }
- }
- } /* for */
-
- reset:
-
- if (audio_fd != -1)
- close(audio_fd);
- if (audio_buffer)
- free(audio_buffer);
- if (mix_buffer)
- free(mix_buffer);
-
- goto loop; /* back to top */
-
- fail:
- if (audio_fd != -1)
- close(audio_fd);
- if (audio_buffer)
- free(audio_buffer);
- if (mix_buffer)
- free(mix_buffer);
-
- return(0);
-}
-
-int read_sample(char *name, short **data, int *length)
-{
- int result;
- FILE *file = 0;
- short *dataptr = 0;
- int datalength;
-
- int i, actual, ch;
- unsigned char buffer[24];
- unsigned int temp;
-
- file = fopen(name, "rb");
- if (file == 0)
- {
- Error(ERR_WARN, "cannot open file '%s' in sound thread", name);
-
- result = 1;
- goto fail;
- }
-
- actual = fread(buffer, 1, 24, file);
- if (actual == -1)
- {
- Error(ERR_WARN, "cannot read file '%s' in sound thread", name);
-
- result = 1;
- goto fail;
- }
-
- if (actual < 24)
- {
- Error(ERR_WARN, "premature eof of file '%s' in sound thread", name);
-
- result = 1;
- goto fail;
- }
-
- /* magic */
- temp = buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3];
- if (temp != 0x2e736e64)
- {
- Error(ERR_WARN, "unrecognized format of file '%s' in sound thread", name);
-
- result = 1;
- goto fail;
- }
-
- /* header length */
- temp = buffer[4] << 24 | buffer[5] << 16 | buffer[6] << 8 | buffer[7];
- if (temp < 24)
- {
- Error(ERR_WARN, "bad header length of file '%s' in sound thread", name);
-
- result = 1;
- goto fail;
- }
-
- actual = temp;
- for (i = 24; i < actual; i++)
- {
- /* skip the rest of the header */
- ch = fgetc(file);
- if (ch == EOF)
- break;
- }
-
- /* data length */
- temp = buffer[8] << 24 | buffer[9] << 16 | buffer[10] << 8 | buffer[11];
- datalength = temp;
-
- /* encoding */
- temp = buffer[12] << 24 | buffer[13] << 16 | buffer[14] << 8 | buffer[15];
- if (temp != 1)
- {
- fprintf(stderr, "%s: \"%s\": %s (%d != 1)\n", progname, name,
- "bad encoding type", temp);
- result = 1;
- goto fail;
- }
-
- /* sample rate */
- temp = buffer[16] << 24 | buffer[17] << 16 | buffer[18] << 8 | buffer[19];
- if (temp != 8000)
- {
- fprintf(stderr, "%s: \"%s\": %s (%d != 8000)\n", progname, name,
- "bad sample rate", temp);
- result = 1;
- goto fail;
- }
-
- /* channels */
- temp = buffer[20] << 24 | buffer[21] << 16 | buffer[22] << 8 | buffer[23];
- if (temp != 1)
- {
- fprintf(stderr, "%s: \"%s\": %s (%d != 1)\n", progname, name,
- "unsupported channels", temp);
- result = 1;
- goto fail;
- }
-
- dataptr = malloc(datalength * sizeof(*dataptr));
- if (dataptr == 0)
- {
- Error(ERR_WARN, "unable to malloc buffer for file '%s' in sound thread",
- name);
-
- result = 1;
- goto fail;
- }
-
- for (i = 0; i < datalength; i++)
- {
- ch = fgetc(file);
- if (ch == EOF) break;
- dataptr[i] = ulaw_to_linear[ch];
- }
-
- fclose(file);
- file = 0;
-
- *data = dataptr;
- *length = datalength;
- result = 0;
-
- fail:
-
- if (file)
- fclose(file);
-
- return(result);
-}
-
-#endif /* defined(PLATFORM_LINUX) || defined(PLATFORM_BSD) */
-
-#endif /* AUDIO_UNIX_NATIVE */
projects / rocksndiamonds.git / blobdiff