diff options
Diffstat (limited to 'audio_hpux.c')
| -rw-r--r-- | audio_hpux.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/audio_hpux.c b/audio_hpux.c new file mode 100644 index 0000000..8d666da --- /dev/null +++ b/audio_hpux.c @@ -0,0 +1,160 @@ +/* + * Taken mainly from xmp, Cc( 1996-98 Claudio Matsuoka and Hipolito Carraro Jr + * + * Who knows if it works, not I, not I... + * -- Isaac + */ + +#include <sys/audio.h> + +#define ARCH_esd_audio_open +int esd_audio_open() +{ + const char *device = "/dev/audio"; + + int afd = -1; + int mode = O_WRONLY; + int gain = AUDIO_MAX_GAIN; + int bsize; + int port = AUDIO_OUT_SPEAKER; + int flags, test; + struct audio_gain again; + struct audio_describe adescribe; + struct audio_limits alimit; + + if ((esd_audio_format & ESD_MASK_FUNC) == ESD_RECORD) { + fprintf(stderr, "No idea how to record audio on hp-ux boxen, FIXME\n"); + esd_audio_fd = -1; + return -1; + } + + if ((afd = open(device, mode)) == -1) { + perror(device); + esd_audio_fd = -1; + return -1; + } + + flags = fcntl(afd, F_GETFL, 0); + if (flags < 0) { + perror("F_GETFL"); + esd_audio_fd = -1; + return -1; + } + flags |= O_NDELAY; + fcntl(afd, F_SETFL, flags); + if (flags < 0) { + perror("F_SETFL"); + esd_audio_fd = -1; + return -1; + } + + if ((esd_audio_format & ESD_MASK_BITS) == ESD_BITS16) + flags = AUDIO_FORMAT_LINEAR16BIT; + else + flags = AUDIO_FORMAT_ULAW; /* FIXME: is this right? */ + /* TODO: probably need a linear2ulaw before sending the mix to the audio device */ + if (ioctl(afd, AUDIO_SET_DATA_FORMAT, flags) == -1) { + perror("AUDIO_SET_DATA_FORMAT"); + close(afd); + esd_audio_fd = -1; + return -1; + } + + if ((esd_audio_format & ESD_MASK_CHAN) == ESD_STEREO) + flags = 2; + else + flags = 1; + if (ioctl(afd, AUDIO_SET_CHANNELS, flags) == -1) { + perror("AUDIO_SET_CHANNELS"); + close(afd); + esd_audio_fd = -1; + return -1; + } + + if (ioctl(afd, AUDIO_SET_OUTPUT, port) == -1) { + perror("AUDIO_SET_PORT"); + close(afd); + esd_audio_fd = -1; + return -1; + } + + test = esd_audio_rate; + if (ioctl(afd, AUDIO_SET_SAMPLE_RATE, test) == -1) { + perror("AUDIO_SET_SAMPLE_RATE"); + close(afd); + esd_audio_fd = -1; + return -1; + } + if (fabs(test - esd_audio_rate) > esd_audio_rate * 0.05) { + fprintf(stderr,"unsupported playback rate: %d\n", esd_audio_rate); + close(afd); + esd_audio_fd = -1; + return -1; + } + + if (ioctl(afd, AUDIO_DESCRIBE, &adescribe) == -1) { + perror("AUDIO_DESCRIBE"); + close(afd); + esd_audio_fd = -1; + return -1; + } + + if (ioctl(afd, AUDIO_GET_GAINS, &again) == -1) { + perror("AUDIO_GET_GAINS"); + close(afd); + esd_audio_fd = -1; + return -1; + } + + /* Don't modify transmit_gain unless it's out of bounds. */ + if (again.cgain[0].transmit_gain < adescribe.min_transmit_gain || + again.cgain[1].transmit_gain < adescribe.min_transmit_gain || + again.cgain[0].transmit_gain > adescribe.max_transmit_gain || + again.cgain[1].transmit_gain > adescribe.max_transmit_gain) { + fprintf(stderr, "one or more of your gain values was out of range - fixed.\n"); + if (again.cgain[0].transmit_gain < adescribe.min_transmit_gain) + again.cgain[0].transmit_gain = adescribe.min_transmit_gain; + if (again.cgain[1].transmit_gain < adescribe.min_transmit_gain) + again.cgain[1].transmit_gain = adescribe.min_transmit_gain; + if (again.cgain[0].transmit_gain > adescribe.max_transmit_gain) + again.cgain[0].transmit_gain = adescribe.max_transmit_gain; + if (again.cgain[1].transmit_gain > adescribe.max_transmit_gain) + again.cgain[1].transmit_gain = adescribe.max_transmit_gain; + } + + if (ioctl(afd, AUDIO_SET_GAINS, &again) == -1) { + perror("AUDIO_SET_GAINS"); + close(afd); + esd_audio_fd = -1; + return -1; + } + + if (!ioctl(afd, AUDIO_GET_LIMITS, &alimit)) { + bsize = (0x0100 << 16); + } else { + bsize = alimit.max_transmit_buffer_size; + } + + while (bsize) { + if (ioctl(afd, AUDIO_SET_TXBUFSIZE, bsize) != -1) { + break; + } + bsize >>= 1; + } + if (!bsize) { + close(afd); + esd_audio_fd = -1; + return -1; + } + + if (ioctl(afd, AUDIO_SET_TXBUFSIZE, bsize) == -1) { + perror("AUDIO_SET_TXBUFSIZE"); + close(afd); + esd_audio_fd = -1; + return -1; + } + + esd_audio_fd = afd; + return afd; +} + |