mirror of https://github.com/ericonr/sndio.git
To store MMC position, use samples (at device rate) as time units
instead of 2400-ths of second. No behaviour change.
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parent
e606351421
commit
0798868306
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@ -103,7 +103,7 @@ unsigned int dev_round; /* device block size */
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int dev_rate; /* device sample rate (Hz) */
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unsigned int dev_pchan, dev_rchan; /* play & rec channels count */
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adata_t *dev_pbuf, *dev_rbuf; /* play & rec buffers */
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unsigned int dev_mmcpos; /* last MMC position */
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long long dev_pos; /* last MMC position in frames */
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#define DEV_STOP 0 /* stopped */
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#define DEV_START 1 /* started */
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unsigned int dev_pstate; /* one of above */
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@ -351,10 +351,8 @@ slot_init(struct slot *s)
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}
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static void
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slot_start(struct slot *s, unsigned int mmc)
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slot_start(struct slot *s, long long pos)
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{
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off_t mmcpos;
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#ifdef DEBUG
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if (s->pstate != SLOT_INIT) {
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slot_log(s);
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@ -362,8 +360,15 @@ slot_start(struct slot *s, unsigned int mmc)
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panic();
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}
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#endif
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mmcpos = ((off_t)mmc * s->afile.rate / MTC_SEC) * s->bpf;
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if (!afile_seek(&s->afile, mmcpos)) {
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/*
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* convert pos to slot sample rate
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*
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* At this stage, we could adjust s->resamp.diff to get
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* sub-frame accuracy.
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*/
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pos = pos * s->afile.rate / dev_rate;
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if (!afile_seek(&s->afile, pos * s->bpf)) {
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s->pstate = SLOT_INIT;
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return;
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}
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@ -662,7 +667,7 @@ dev_open(char *dev, int mode, int bufsz, char *port)
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dev_rchan = par.rchan;
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dev_rbuf = xmalloc(sizeof(adata_t) * dev_rchan * dev_round);
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}
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dev_mmcpos = 0;
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dev_pos = 0;
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dev_pstate = DEV_STOP;
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if (log_level >= 2) {
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log_puts(dev_name);
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@ -753,7 +758,7 @@ dev_mmcstart(void)
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if (dev_pstate == DEV_STOP) {
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dev_pstate = DEV_START;
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for (s = slot_list; s != NULL; s = s->next)
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slot_start(s, dev_mmcpos);
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slot_start(s, dev_pos);
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dev_prime = (dev_mode & SIO_PLAY) ? dev_bufsz / dev_round : 0;
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sio_start(dev_sh);
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if (log_level >= 2)
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@ -795,18 +800,23 @@ dev_mmcstop(void)
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static void
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dev_mmcloc(unsigned int mmc)
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{
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if (dev_mmcpos == mmc)
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long long pos;
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pos = mmc * dev_rate / MTC_SEC;
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if (dev_pos == pos)
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return;
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dev_mmcpos = mmc;
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dev_pos = pos;
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if (log_level >= 2) {
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log_puts("relocated to ");
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log_putu((dev_mmcpos / (MTC_SEC * 3600)) % 24);
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log_putu((mmc / (MTC_SEC * 3600)) % 24);
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log_puts(":");
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log_putu((dev_mmcpos / (MTC_SEC * 60)) % 60);
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log_putu((mmc / (MTC_SEC * 60)) % 60);
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log_puts(":");
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log_putu((dev_mmcpos / (MTC_SEC)) % 60);
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log_putu((mmc / (MTC_SEC)) % 60);
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log_puts(".");
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log_putu((dev_mmcpos / (MTC_SEC / 100)) % 100);
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log_putu((mmc / (MTC_SEC / 100)) % 100);
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log_puts(".");
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log_putu((mmc / (MTC_SEC / 100)) % 100);
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log_puts("\n");
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}
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if (dev_pstate == DEV_START) {
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@ -1010,7 +1020,7 @@ offline(void)
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dev_pchan = dev_rchan = cmax + 1;
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dev_pbuf = dev_rbuf = xmalloc(sizeof(adata_t) * dev_pchan * dev_round);
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dev_pstate = DEV_STOP;
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dev_mmcpos = 0;
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dev_pos = 0;
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for (s = slot_list; s != NULL; s = s->next)
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slot_init(s);
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for (s = slot_list; s != NULL; s = s->next)
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