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@ -17,52 +17,27 @@ |
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#include <sys/audioio.h> |
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#include <sys/ioctl.h> |
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#include <sys/stat.h> |
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#include <fcntl.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "common.h" |
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#include "driver.h" |
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#include "mixer.h" |
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#include "sound.h" |
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static int audio_fd; |
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static int init(struct context_data *); |
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static int setaudio(struct xmp_options *); |
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static void bufdump(struct context_data *, void *, int); |
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static void shutdown(struct context_data *); |
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static void dummy() |
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{ |
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} |
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static char *help[] = { |
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"gain=val", "Audio output gain (0 to 255)", |
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"buffer=val", "Audio buffer size (default is 32768)", |
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NULL |
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}; |
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struct xmp_drv_info drv_openbsd = { |
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"openbsd", /* driver ID */ |
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"OpenBSD PCM audio", /* driver description */ |
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help, /* help */ |
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init, /* init */ |
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shutdown, /* shutdown */ |
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dummy, /* starttimer */ |
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dummy, /* flush */ |
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bufdump, /* bufdump */ |
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}; |
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struct sound_driver sound_openbsd; |
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static int setaudio(struct xmp_options *o) |
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static int init(struct options *options) |
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{ |
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char **parm = options->driver_parm; |
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audio_info_t ainfo; |
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int gain = 128; |
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int bsize = 32 * 1024; |
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char *token, **parm; |
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parm_init(); |
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if ((audio_fd = open("/dev/sound", O_WRONLY)) == -1) |
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return -1; |
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parm_init(parm); |
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chkparm1("gain", gain = strtoul(token, NULL, 0)); |
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chkparm1("buffer", bsize = strtoul(token, NULL, 0)); |
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parm_end(); |
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@ -74,39 +49,33 @@ static int setaudio(struct xmp_options *o) |
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AUDIO_INITINFO(&ainfo); |
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ainfo.play.sample_rate = o->freq; |
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ainfo.play.channels = o->outfmt & XMP_FORMAT_MONO ? 1 : 2; |
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ainfo.play.precision = o->resol; |
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ainfo.play.encoding = o->resol > 8 ? |
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AUDIO_ENCODING_SLINEAR : AUDIO_ENCODING_ULINEAR; |
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ainfo.play.sample_rate = options->rate; |
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ainfo.play.channels = options->format & XMP_FORMAT_MONO ? 1 : 2; |
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if (options->format & XMP_FORMAT_8BIT) { |
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ainfo.play.precision = 8; |
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ainfo.play.encoding = AUDIO_ENCODING_ULINEAR; |
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options->format |= XMP_FORMAT_UNSIGNED; |
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} else { |
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ainfo.play.precision = 16; |
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ainfo.play.encoding = AUDIO_ENCODING_SLINEAR; |
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options->format &= ~XMP_FORMAT_UNSIGNED; |
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} |
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ainfo.play.gain = gain; |
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ainfo.play.buffer_size = bsize; |
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if (ioctl(audio_fd, AUDIO_SETINFO, &ainfo) == -1) { |
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close(audio_fd); |
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return XMP_ERR_DINIT; |
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return -1; |
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} |
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drv_openbsd.description = "OpenBSD PCM audio"; |
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sound_openbsd.description = "OpenBSD PCM audio"; |
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return 0; |
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} |
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static int init(struct context_data *ctx) |
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{ |
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if ((audio_fd = open("/dev/sound", O_WRONLY)) == -1) |
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return XMP_ERR_DINIT; |
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if (setaudio(&ctx->o) != 0) |
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return XMP_ERR_DINIT; |
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return 0; |
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} |
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/* Build and write one tick (one PAL frame or 1/50 s in standard vblank
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* timed mods) of audio data to the output device. |
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*/ |
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static void bufdump(struct context_data *ctx, void *b, int i) |
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static void play(void *b, int i) |
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{ |
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int j; |
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@ -119,7 +88,38 @@ static void bufdump(struct context_data *ctx, void *b, int i) |
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} |
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} |
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static void shutdown(struct context_data *ctx) |
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static void deinit() |
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{ |
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close(audio_fd); |
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} |
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static void flush() |
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{ |
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} |
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static void onpause() |
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{ |
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} |
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static void onresume() |
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{ |
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} |
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static char *help[] = { |
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"gain=val", "Audio output gain (0 to 255)", |
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"buffer=val", "Audio buffer size (default is 32768)", |
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NULL |
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}; |
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struct sound_driver sound_openbsd = { |
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"openbsd", |
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"OpenBSD PCM audio", |
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help, |
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init, |
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deinit, |
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play, |
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flush, |
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onpause, |
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onresume |
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}; |