* handle sounds in emerald mine
*/
-#include "../libgame/platform.h"
-
-
-#if defined(TARGET_X11)
-
-#if defined(PLATFORM_LINUX) || defined(PLATFORM_BSD)
-
-#ifdef PLATFORM_LINUX
-#include <sys/soundcard.h>
-#endif
-
-#ifdef PLATFORM_BSD
-#include <soundcard.h>
-#endif
-
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-
-#include "global.h"
-#include "sample.h"
-
-static char audioname[] = "/dev/audio";
-
-static const int sound_priority[SAMPLE_MAX] = {
- SAMPLE_exit, 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, SAMPLE_ball,
- SAMPLE_grow, SAMPLE_squash, 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_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 */
- long 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;
-
- memset(sound_play, 0, sizeof(sound_play)); /* not playing any sounds */
-
- for(;;) {
- for(;;) {
-
-/* pick sounds to play, if any */
- if(sound_play[SAMPLE_exit] || 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) {
- fprintf(stderr, "%s: %s: %s\n", progname, "select failed", strerror(errno));
- 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) {
- fprintf(stderr, "%s: %s: %s\n", progname, "read failed", strerror(errno));
- goto fail;
- }
- if(i == 0) {
- fprintf(stderr, "%s: %s: %s\n", progname, "read sound", "Broken pipe");
- goto fail;
- }
- if(i != sizeof(play)) {
- fprintf(stderr, "%s: %s\n", progname, "bad message length");
- 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) {
- fprintf(stderr, "%s: \"%s\": %s (%d): %s\n", progname, audioname, "unable to set fragment size", 512, strerror(errno));
- goto reset;
- }
- if(ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &i) == -1) {
- fprintf(stderr, "%s: \"%s\": %s: %s\n", progname, audioname, "unable to query audio format", strerror(errno));
- goto reset;
- }
- audio_format = (i & AFMT_U8) ? AFMT_U8 : AFMT_MU_LAW; /* prefer 8 bit unsigned and fall back on mu-law */
- i = audio_format;
- if(ioctl(audio_fd, SNDCTL_DSP_SETFMT, &i) == -1) {
- fprintf(stderr, "%s: \"%s\": %s (%d): %s\n", progname, audioname, "unable to set audio format", audio_format, strerror(errno));
- goto reset;
- }
- if(i == AFMT_MU_LAW) {
- audio_format = AUDIO_ULAW;
- } else if(i == AFMT_U8) {
- audio_format = AUDIO_U8;
- } else {
- fprintf(stderr, "%s: \"%s\": %s (%d)\n", progname, audioname, "audio format required by device not supported", i);
- goto reset;
- }
- i = 1;
- if(ioctl(audio_fd, SNDCTL_DSP_CHANNELS, &i) == -1) {
- fprintf(stderr, "%s: \"%s\": %s: %s\n", progname, audioname, "unable to set channels to mono", strerror(errno));
- goto reset;
- }
- if(i != 1) {
- fprintf(stderr, "%s: \"%s\": %s (%d)\n", progname, audioname, "channels required by device not supported", i);
- goto reset;
- }
- i = 8000;
- if(ioctl(audio_fd, SNDCTL_DSP_SPEED, &i) == -1) {
- fprintf(stderr, "%s: \"%s\": %s: %s\n", progname, audioname, "unable to set sampling rate", strerror(errno));
- goto reset;
- }
- sample_rate = i;
- if(ioctl(audio_fd, SNDCTL_DSP_GETBLKSIZE, &i) == -1) {
- fprintf(stderr, "%s: \"%s\": %s: %s\n", progname, audioname, "unable to get block size", strerror(errno));
- goto reset;
- }
- fragment_size = i;
-#else
- if(fcntl(audio_fd, F_SETFL, O_NONBLOCK) == -1) {
- fprintf(stderr, "%s: \"%s\": %s: %s\n", progname, audioname, "unable to make audio non blocking", strerror(errno));
- goto reset;
- }
-#endif /* OPEN_SOUND_SYSTEM */
- audio_buffer = malloc(fragment_size * sizeof(*audio_buffer));
- if(audio_buffer == 0) {
- fprintf(stderr, "%s: %s (%d): %s\n", progname, "unable to malloc audio buffer", fragment_size * sizeof(*audio_buffer), strerror(errno));
- goto fail;
- }
- mix_buffer = malloc(fragment_size * sizeof(*mix_buffer));
- if(mix_buffer == 0) {
- fprintf(stderr, "%s: %s (%d): %s\n", progname, "unable to malloc mixing buffer", fragment_size * sizeof(*mix_buffer), strerror(errno));
- 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) {
-
- memset(mix_buffer, 0, fragment_size * sizeof(*mix_buffer)); /* prepare 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 long 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) {
- fprintf(stderr, "%s: %s: %s\n", progname, "write error", strerror(errno));
- goto reset;
- }
- if(i != fragment_size) {
- fprintf(stderr, "%s: %s\n", progname, "bad write length");
- 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, long *length)
-{
- int result;
- FILE *file = 0;
- short *dataptr = 0;
- long datalength;
-
- int i, actual, ch;
- unsigned char buffer[24];
- unsigned long temp;
-
- file = fopen(name, "rb");
- if(file == 0) {
- fprintf(stderr, "%s: \"%s\": %s: %s\n", progname, name, "open error", strerror(errno));
- result = 1; goto fail;
- }
- actual = fread(buffer, 1, 24, file);
- if(actual == -1) {
- fprintf(stderr, "%s: \"%s\": %s: %s\n", progname, name, "read error", strerror(errno));
- result = 1; goto fail;
- }
- if(actual < 24) {
- fprintf(stderr, "%s: \"%s\": %s\n", progname, name, "premature eof");
- result = 1; goto fail;
- }
- temp = buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3]; /* magic */
- if(temp != 0x2e736e64) {
- fprintf(stderr, "%s: \"%s\": %s\n", progname, name, "unrecognized file format");
- result = 1; goto fail;
- }
- temp = buffer[4] << 24 | buffer[5] << 16 | buffer[6] << 8 | buffer[7]; /* header length */
- if(temp < 24) {
- fprintf(stderr, "%s: \"%s\": %s\n", progname, name, "bad header length");
- 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;
- }
-
- temp = buffer[8] << 24 | buffer[9] << 16 | buffer[10] << 8 | buffer[11]; /* data length */
- datalength = temp;
- temp = buffer[12] << 24 | buffer[13] << 16 | buffer[14] << 8 | buffer[15]; /* encoding */
- if(temp != 1) {
- fprintf(stderr, "%s: \"%s\": %s (%ld != 1)\n", progname, name, "bad encoding type", temp);
- result = 1; goto fail;
- }
- temp = buffer[16] << 24 | buffer[17] << 16 | buffer[18] << 8 | buffer[19]; /* sample rate */
- if(temp != 8000) {
- fprintf(stderr, "%s: \"%s\": %s (%ld != 8000)\n", progname, name, "bad sample rate", temp);
- result = 1; goto fail;
- }
- temp = buffer[20] << 24 | buffer[21] << 16 | buffer[22] << 8 | buffer[23]; /* channels */
- if(temp != 1) {
- fprintf(stderr, "%s: \"%s\": %s (%ld != 1)\n", progname, name, "unsupported channels", temp);
- result = 1; goto fail;
- }
-
- dataptr = malloc(datalength * sizeof(*dataptr));
- if(dataptr == 0) {
- fprintf(stderr, "%s: \"%s\": %s (%ld): %s\n", progname, name, "unable to malloc buffer", datalength * sizeof(*dataptr), strerror(errno));
- 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
+#include "main_em.h"
projects / rocksndiamonds.git / blobdiff