balrog | ca9cc28 | 2008-01-14 04:24:29 +0000 | [diff] [blame] | 1 | #include "qemu-common.h" |
| 2 | #include "audio.h" |
| 3 | |
| 4 | #define AUDIO_CAP "audio-pt" |
| 5 | |
| 6 | #include "audio_int.h" |
| 7 | #include "audio_pt_int.h" |
| 8 | |
| 9 | static void logerr (struct audio_pt *pt, int err, const char *fmt, ...) |
| 10 | { |
| 11 | va_list ap; |
| 12 | |
| 13 | va_start (ap, fmt); |
| 14 | AUD_vlog (pt->drv, fmt, ap); |
| 15 | va_end (ap); |
| 16 | |
| 17 | AUD_log (NULL, "\n"); |
| 18 | AUD_log (pt->drv, "Reason: %s\n", strerror (err)); |
| 19 | } |
| 20 | |
| 21 | int audio_pt_init (struct audio_pt *p, void *(*func) (void *), |
| 22 | void *opaque, const char *drv, const char *cap) |
| 23 | { |
| 24 | int err, err2; |
| 25 | const char *efunc; |
| 26 | |
| 27 | p->drv = drv; |
| 28 | |
| 29 | err = pthread_mutex_init (&p->mutex, NULL); |
| 30 | if (err) { |
| 31 | efunc = "pthread_mutex_init"; |
| 32 | goto err0; |
| 33 | } |
| 34 | |
| 35 | err = pthread_cond_init (&p->cond, NULL); |
| 36 | if (err) { |
| 37 | efunc = "pthread_cond_init"; |
| 38 | goto err1; |
| 39 | } |
| 40 | |
| 41 | err = pthread_create (&p->thread, NULL, func, opaque); |
| 42 | if (err) { |
| 43 | efunc = "pthread_create"; |
| 44 | goto err2; |
| 45 | } |
| 46 | |
| 47 | return 0; |
| 48 | |
| 49 | err2: |
| 50 | err2 = pthread_cond_destroy (&p->cond); |
| 51 | if (err2) { |
| 52 | logerr (p, err2, "%s(%s): pthread_cond_destroy failed", cap, AUDIO_FUNC); |
| 53 | } |
| 54 | |
| 55 | err1: |
| 56 | err2 = pthread_mutex_destroy (&p->mutex); |
| 57 | if (err2) { |
| 58 | logerr (p, err2, "%s(%s): pthread_mutex_destroy failed", cap, AUDIO_FUNC); |
| 59 | } |
| 60 | |
| 61 | err0: |
| 62 | logerr (p, err, "%s(%s): %s failed", cap, AUDIO_FUNC, efunc); |
| 63 | return -1; |
| 64 | } |
| 65 | |
| 66 | int audio_pt_fini (struct audio_pt *p, const char *cap) |
| 67 | { |
| 68 | int err, ret = 0; |
| 69 | |
| 70 | err = pthread_cond_destroy (&p->cond); |
| 71 | if (err) { |
| 72 | logerr (p, err, "%s(%s): pthread_cond_destroy failed", cap, AUDIO_FUNC); |
| 73 | ret = -1; |
| 74 | } |
| 75 | |
| 76 | err = pthread_mutex_destroy (&p->mutex); |
| 77 | if (err) { |
| 78 | logerr (p, err, "%s(%s): pthread_mutex_destroy failed", cap, AUDIO_FUNC); |
| 79 | ret = -1; |
| 80 | } |
| 81 | return ret; |
| 82 | } |
| 83 | |
| 84 | int audio_pt_lock (struct audio_pt *p, const char *cap) |
| 85 | { |
| 86 | int err; |
| 87 | |
| 88 | err = pthread_mutex_lock (&p->mutex); |
| 89 | if (err) { |
| 90 | logerr (p, err, "%s(%s): pthread_mutex_lock failed", cap, AUDIO_FUNC); |
| 91 | return -1; |
| 92 | } |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | int audio_pt_unlock (struct audio_pt *p, const char *cap) |
| 97 | { |
| 98 | int err; |
| 99 | |
| 100 | err = pthread_mutex_unlock (&p->mutex); |
| 101 | if (err) { |
| 102 | logerr (p, err, "%s(%s): pthread_mutex_unlock failed", cap, AUDIO_FUNC); |
| 103 | return -1; |
| 104 | } |
| 105 | return 0; |
| 106 | } |
| 107 | |
| 108 | int audio_pt_wait (struct audio_pt *p, const char *cap) |
| 109 | { |
| 110 | int err; |
| 111 | |
| 112 | err = pthread_cond_wait (&p->cond, &p->mutex); |
| 113 | if (err) { |
| 114 | logerr (p, err, "%s(%s): pthread_cond_wait failed", cap, AUDIO_FUNC); |
| 115 | return -1; |
| 116 | } |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | int audio_pt_unlock_and_signal (struct audio_pt *p, const char *cap) |
| 121 | { |
| 122 | int err; |
| 123 | |
| 124 | err = pthread_mutex_unlock (&p->mutex); |
| 125 | if (err) { |
| 126 | logerr (p, err, "%s(%s): pthread_mutex_unlock failed", cap, AUDIO_FUNC); |
| 127 | return -1; |
| 128 | } |
| 129 | err = pthread_cond_signal (&p->cond); |
| 130 | if (err) { |
| 131 | logerr (p, err, "%s(%s): pthread_cond_signal failed", cap, AUDIO_FUNC); |
| 132 | return -1; |
| 133 | } |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | int audio_pt_join (struct audio_pt *p, void **arg, const char *cap) |
| 138 | { |
| 139 | int err; |
| 140 | void *ret; |
| 141 | |
| 142 | err = pthread_join (p->thread, &ret); |
| 143 | if (err) { |
| 144 | logerr (p, err, "%s(%s): pthread_join failed", cap, AUDIO_FUNC); |
| 145 | return -1; |
| 146 | } |
| 147 | *arg = ret; |
| 148 | return 0; |
| 149 | } |