#include <config.h>
#endif
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
+#endif
+
#include <sys/soundcard.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
"rate=<sample rate> "
"fragments=<number of fragments> "
"fragment_size=<fragment size> "
- "channel_map=<channel map>")
+ "channel_map=<channel map> "
+ "mmap=<enable memory mapping?>")
#define DEFAULT_DEVICE "/dev/dsp"
+#define DEFAULT_NFRAGS 4
+#define DEFAULT_FRAGSIZE_MSEC 25
+
struct userdata {
pa_core *core;
pa_module *module;
pa_memchunk memchunk;
- uint32_t in_fragment_size, out_fragment_size, sample_size;
+ uint32_t in_fragment_size, out_fragment_size, in_nfrags, out_nfrags, in_hwbuf_size, out_hwbuf_size;
int use_getospace, use_getispace;
int use_getodelay;
int mode;
int nfrags, frag_size;
+
+ int use_mmap;
+ unsigned out_mmap_current, in_mmap_current;
+ void *in_mmap, *out_mmap;
+ pa_memblock **in_mmap_memblocks, **out_mmap_memblocks;
+
+ int in_mmap_saved_nfrags, out_mmap_saved_nfrags;
};
static const char* const valid_modargs[] = {
"rate",
"channels",
"channel_map",
+ "mmap",
NULL
};
+static void trigger(struct userdata *u, int quick) {
+ int enable_bits = 0, zero = 0;
+
+/* pa_log_debug("trigger"); */
+
+ if (u->source && u->source->thread_info.state != PA_SOURCE_SUSPENDED)
+ enable_bits |= PCM_ENABLE_INPUT;
+
+ if (u->sink && u->sink->thread_info.state != PA_SINK_SUSPENDED)
+ enable_bits |= PCM_ENABLE_OUTPUT;
+
+ if (u->use_mmap) {
+
+ if (!quick)
+ /* First, let's stop all playback, capturing */
+ ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &zero);
+
+#ifdef SNDCTL_DSP_HALT
+ if (enable_bits == 0)
+ if (ioctl(u->fd, SNDCTL_DSP_HALT, NULL) < 0)
+ pa_log_warn("SNDCTL_DSP_HALT: %s", pa_cstrerror(errno));
+#endif
+
+ if (ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &enable_bits) < 0)
+ pa_log_warn("SNDCTL_DSP_SETTRIGGER: %s", pa_cstrerror(errno));
+
+ if (u->sink && !(enable_bits & PCM_ENABLE_OUTPUT)) {
+ pa_log_debug("clearing playback buffer");
+ pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &u->sink->sample_spec);
+ }
+
+ } else {
+
+ if (enable_bits)
+ if (ioctl(u->fd, SNDCTL_DSP_POST, NULL) < 0)
+ pa_log_warn("SNDCTL_DSP_POST: %s", pa_cstrerror(errno));
+
+ if (!quick) {
+ /*
+ * Some crappy drivers do not start the recording until we
+ * read something. Without this snippet, poll will never
+ * register the fd as ready.
+ */
+
+ if (u->source && u->source->thread_info.state != PA_SOURCE_SUSPENDED) {
+ uint8_t *buf = pa_xnew(uint8_t, u->in_fragment_size);
+ pa_read(u->fd, buf, u->in_fragment_size, NULL);
+ pa_xfree(buf);
+ }
+ }
+ }
+}
+
+static void mmap_fill_memblocks(struct userdata *u, unsigned n) {
+ pa_assert(u);
+ pa_assert(u->out_mmap_memblocks);
+
+ while (n > 0) {
+ pa_memchunk chunk;
+
+ if (u->out_mmap_memblocks[u->out_mmap_current])
+ pa_memblock_unref_fixed(u->out_mmap_memblocks[u->out_mmap_current]);
+
+ chunk.memblock = u->out_mmap_memblocks[u->out_mmap_current] =
+ pa_memblock_new_fixed(
+ u->core->mempool,
+ (uint8_t*) u->out_mmap + u->out_fragment_size * u->out_mmap_current,
+ u->out_fragment_size,
+ 1);
+
+ chunk.length = pa_memblock_get_length(chunk.memblock);
+ chunk.index = 0;
+
+ pa_sink_render_into_full(u->sink, &chunk);
+
+ u->out_mmap_current++;
+ while (u->out_mmap_current >= u->out_nfrags)
+ u->out_mmap_current -= u->out_nfrags;
+
+ n--;
+ }
+}
+
+static int mmap_write(struct userdata *u) {
+ struct count_info info;
+
+
+ pa_assert(u);
+ pa_assert(u->sink);
+
+ if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
+ pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
+ return -1;
+ }
+
+ info.blocks += u->out_mmap_saved_nfrags;
+ u->out_mmap_saved_nfrags = 0;
+
+ if (info.blocks > 0)
+ mmap_fill_memblocks(u, info.blocks);
+
+ return info.blocks;
+}
+
+static void mmap_post_memblocks(struct userdata *u, unsigned n) {
+ pa_assert(u);
+ pa_assert(u->in_mmap_memblocks);
+
+ while (n > 0) {
+ pa_memchunk chunk;
+
+ if (!u->in_mmap_memblocks[u->in_mmap_current]) {
+
+ chunk.memblock = u->in_mmap_memblocks[u->in_mmap_current] =
+ pa_memblock_new_fixed(
+ u->core->mempool,
+ (uint8_t*) u->in_mmap + u->in_fragment_size*u->in_mmap_current,
+ u->in_fragment_size,
+ 1);
+
+ chunk.length = pa_memblock_get_length(chunk.memblock);
+ chunk.index = 0;
+
+ pa_source_post(u->source, &chunk);
+ }
+
+ u->in_mmap_current++;
+ while (u->in_mmap_current >= u->in_nfrags)
+ u->in_mmap_current -= u->in_nfrags;
+
+ n--;
+ }
+}
+
+static void mmap_clear_memblocks(struct userdata*u, unsigned n) {
+ unsigned i = u->in_mmap_current;
+
+ pa_assert(u);
+ pa_assert(u->in_mmap_memblocks);
+
+ if (n > u->in_nfrags)
+ n = u->in_nfrags;
+
+ while (n > 0) {
+ if (u->in_mmap_memblocks[i]) {
+ pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
+ u->in_mmap_memblocks[i] = NULL;
+ }
+
+ i++;
+ while (i >= u->in_nfrags)
+ i -= u->in_nfrags;
+
+ n--;
+ }
+}
+
+static int mmap_read(struct userdata *u) {
+ struct count_info info;
+ pa_assert(u);
+ pa_assert(u->source);
+
+ if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
+ pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
+ return -1;
+ }
+
+ info.blocks += u->in_mmap_saved_nfrags;
+ u->in_mmap_saved_nfrags = 0;
+
+ if (info.blocks > 0) {
+ mmap_post_memblocks(u, info.blocks);
+ mmap_clear_memblocks(u, u->in_nfrags/2);
+ }
+
+ return info.blocks;
+}
+
+static pa_usec_t mmap_sink_get_latency(struct userdata *u) {
+ struct count_info info;
+ size_t bpos, n;
+
+ pa_assert(u);
+
+ if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
+ pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
+ return 0;
+ }
+
+ u->out_mmap_saved_nfrags += info.blocks;
+
+ bpos = ((u->out_mmap_current + u->out_mmap_saved_nfrags) * u->out_fragment_size) % u->out_hwbuf_size;
+
+ if (bpos <= (size_t) info.ptr)
+ n = u->out_hwbuf_size - (info.ptr - bpos);
+ else
+ n = bpos - info.ptr;
+
+/* pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->out_fragment_size, u->out_fragments); */
+
+ return pa_bytes_to_usec(n, &u->sink->sample_spec);
+}
+
+static pa_usec_t mmap_source_get_latency(struct userdata *u) {
+ struct count_info info;
+ size_t bpos, n;
+
+ pa_assert(u);
+
+ if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
+ pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
+ return 0;
+ }
+
+ u->in_mmap_saved_nfrags += info.blocks;
+ bpos = ((u->in_mmap_current + u->in_mmap_saved_nfrags) * u->in_fragment_size) % u->in_hwbuf_size;
+
+ if (bpos <= (size_t) info.ptr)
+ n = info.ptr - bpos;
+ else
+ n = u->in_hwbuf_size - bpos + info.ptr;
+
+/* pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->in_fragment_size, u->in_fragments); */
+
+ return pa_bytes_to_usec(n, &u->source->sample_spec);
+}
+
+static pa_usec_t io_sink_get_latency(struct userdata *u) {
+ pa_usec_t r = 0;
+
+ pa_assert(u);
+
+ if (u->use_getodelay) {
+ int arg;
+
+ if (ioctl(u->fd, SNDCTL_DSP_GETODELAY, &arg) < 0) {
+ pa_log_info("Device doesn't support SNDCTL_DSP_GETODELAY: %s", pa_cstrerror(errno));
+ u->use_getodelay = 0;
+ } else
+ r = pa_bytes_to_usec(arg, &u->sink->sample_spec);
+
+ }
+
+ if (!u->use_getodelay && u->use_getospace) {
+ struct audio_buf_info info;
+
+ if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
+ pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
+ u->use_getospace = 0;
+ } else
+ r = pa_bytes_to_usec(info.bytes, &u->sink->sample_spec);
+ }
+
+ if (u->memchunk.memblock)
+ r += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
+
+ return r;
+}
+
+
+static pa_usec_t io_source_get_latency(struct userdata *u) {
+ pa_usec_t r = 0;
+
+ pa_assert(u);
+
+ if (u->use_getispace) {
+ struct audio_buf_info info;
+
+ if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
+ pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
+ u->use_getispace = 0;
+ } else
+ r = pa_bytes_to_usec(info.bytes, &u->source->sample_spec);
+ }
+
+ return r;
+}
+
static int suspend(struct userdata *u) {
pa_assert(u);
pa_assert(u->fd >= 0);
+ if (u->out_mmap_memblocks) {
+ unsigned i;
+ for (i = 0; i < u->out_nfrags; i++)
+ if (u->out_mmap_memblocks[i]) {
+ pa_memblock_unref_fixed(u->out_mmap_memblocks[i]);
+ u->out_mmap_memblocks[i] = NULL;
+ }
+ }
+
+ if (u->in_mmap_memblocks) {
+ unsigned i;
+ for (i = 0; i < u->in_nfrags; i++)
+ if (u->in_mmap_memblocks[i]) {
+ pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
+ u->in_mmap_memblocks[i] = NULL;
+ }
+ }
+
+ if (u->in_mmap && u->in_mmap != MAP_FAILED) {
+ munmap(u->in_mmap, u->in_hwbuf_size);
+ u->in_mmap = NULL;
+ }
+
+ if (u->out_mmap && u->out_mmap != MAP_FAILED) {
+ munmap(u->out_mmap, u->out_hwbuf_size);
+ u->out_mmap = NULL;
+ }
+
/* Let's suspend */
ioctl(u->fd, SNDCTL_DSP_SYNC, NULL);
close(u->fd);
int m;
pa_sample_spec ss, *ss_original;
int frag_size, in_frag_size, out_frag_size;
+ int in_nfrags, out_nfrags;
struct audio_buf_info info;
pa_assert(u);
}
in_frag_size = out_frag_size = frag_size;
+ in_nfrags = out_nfrags = u->nfrags;
- if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) >= 0)
+ if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
in_frag_size = info.fragsize;
+ in_nfrags = info.fragstotal;
+ }
- if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) >= 0)
+ if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
out_frag_size = info.fragsize;
+ out_nfrags = info.fragstotal;
+ }
- if ((u->source && in_frag_size != (int) u->in_fragment_size) || (u->sink && out_frag_size != (int) u->out_fragment_size)) {
- pa_log_warn("Resume failed, fragment settings don't match.");
+ if ((u->source && (in_frag_size != (int) u->in_fragment_size || in_nfrags != (int) u->in_nfrags)) ||
+ (u->sink && (out_frag_size != (int) u->out_fragment_size || out_nfrags != (int) u->out_nfrags))) {
+ pa_log_warn("Resume failed, input fragment settings don't match.");
goto fail;
}
- /*
- * Some crappy drivers do not start the recording until we read something.
- * Without this snippet, poll will never register the fd as ready.
- */
- if (u->source) {
- uint8_t *buf = pa_xnew(uint8_t, u->sample_size);
- pa_read(u->fd, buf, u->sample_size, NULL);
- pa_xfree(buf);
+ if (u->use_mmap) {
+ if (u->source) {
+ if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
+ pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
+ goto fail;
+ }
+ }
+
+ if (u->sink) {
+ if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
+ pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
+ if (u->in_mmap && u->in_mmap != MAP_FAILED) {
+ munmap(u->in_mmap, u->in_hwbuf_size);
+ u->in_mmap = NULL;
+ }
+
+ goto fail;
+ }
+
+ pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
+ }
}
+ u->out_mmap_current = u->in_mmap_current = 0;
+ u->out_mmap_saved_nfrags = u->in_mmap_saved_nfrags = 0;
+
+ /* Now, start only what we need */
+ trigger(u, 0);
+
pa_log_debug("Resumed successfully...");
return 0;
static int sink_process_msg(pa_msgobject *o, int code, void *data, pa_memchunk *chunk) {
struct userdata *u = PA_SINK(o)->userdata;
+ int do_trigger = 0, ret;
switch (code) {
pa_usec_t r = 0;
if (u->fd >= 0) {
- if (u->use_getodelay) {
- int arg;
-
- if (ioctl(u->fd, SNDCTL_DSP_GETODELAY, &arg) < 0) {
- pa_log_info("Device doesn't support SNDCTL_DSP_GETODELAY: %s", pa_cstrerror(errno));
- u->use_getodelay = 0;
- } else
- r = pa_bytes_to_usec(arg, &u->sink->sample_spec);
-
- }
-
- if (!u->use_getodelay && u->use_getospace) {
- struct audio_buf_info info;
-
- if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
- pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
- u->use_getospace = 0;
- } else
- r = pa_bytes_to_usec(info.bytes, &u->sink->sample_spec);
- }
+ if (u->use_mmap)
+ r = mmap_sink_get_latency(u);
+ else
+ r = io_sink_get_latency(u);
}
- if (u->memchunk.memblock)
- r += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
-
*((pa_usec_t*) data) = r;
break;
if (PA_PTR_TO_UINT(data) == PA_SINK_SUSPENDED) {
pa_assert(u->sink->thread_info.state != PA_SINK_SUSPENDED);
- if (u->source_suspended)
+ if (u->source_suspended) {
if (suspend(u) < 0)
return -1;
+ } else
+ do_trigger = 1;
u->sink_suspended = 1;
- }
-
- if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
+
+ } else if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
pa_assert(PA_PTR_TO_UINT(data) != PA_SINK_SUSPENDED);
- if (u->source_suspended)
- if (unsuspend(u) < 0)
+ if (u->source_suspended) {
+ if (unsuspend(u) < 0)
return -1;
+ } else
+ do_trigger = 1;
+
+ u->out_mmap_current = 0;
+ u->out_mmap_saved_nfrags = 0;
u->sink_suspended = 0;
}
break;
}
- return pa_sink_process_msg(o, code, data, chunk);
+ ret = pa_sink_process_msg(o, code, data, chunk);
+
+ if (do_trigger)
+ trigger(u, 1);
+
+ return ret;
}
static int source_process_msg(pa_msgobject *o, int code, void *data, pa_memchunk *chunk) {
struct userdata *u = PA_SOURCE(o)->userdata;
+ int do_trigger = 0, ret;
switch (code) {
case PA_SOURCE_MESSAGE_GET_LATENCY: {
pa_usec_t r = 0;
- if (u->use_getispace && u->fd >= 0) {
- struct audio_buf_info info;
-
- if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
- pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
- u->use_getispace = 0;
- } else
- r = pa_bytes_to_usec(info.bytes, &u->source->sample_spec);
+ if (u->fd >= 0) {
+ if (u->use_mmap)
+ r = mmap_source_get_latency(u);
+ else
+ r = io_source_get_latency(u);
}
-
+
*((pa_usec_t*) data) = r;
break;
}
if (PA_PTR_TO_UINT(data) == PA_SOURCE_SUSPENDED) {
pa_assert(u->source->thread_info.state != PA_SOURCE_SUSPENDED);
- if (u->sink_suspended)
- if (suspend(u) < 0)
+ if (u->sink_suspended) {
+ if (suspend(u) < 0)
return -1;
+ } else
+ do_trigger = 1;
u->source_suspended = 1;
- }
- if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
+ } else if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
pa_assert(PA_PTR_TO_UINT(data) != PA_SOURCE_SUSPENDED);
- if (u->sink_suspended)
- if (unsuspend(u) < 0)
+ if (u->sink_suspended) {
+ if (unsuspend(u) < 0)
return -1;
+ } else
+ do_trigger = 1;
+
+ u->in_mmap_current = 0;
+ u->in_mmap_saved_nfrags = 0;
u->source_suspended = 0;
}
break;
}
- return pa_source_process_msg(o, code, data, chunk);
+ ret = pa_source_process_msg(o, code, data, chunk);
+
+ if (do_trigger)
+ trigger(u, 1);
+
+ return ret;
}
static void thread_func(void *userdata) {
pa_log_debug("Thread starting up");
- /*
- * Some crappy drivers do not start the recording until we read something.
- * Without this snippet, poll will never register the fd as ready.
- */
- if (u->source) {
- uint8_t *buf = pa_xnew(uint8_t, u->sample_size);
- pa_read(u->fd, buf, u->sample_size, &read_type);
- pa_xfree(buf);
- }
-
+ trigger(u, 0);
+
memset(&pollfd, 0, sizeof(pollfd));
pollfd[POLLFD_ASYNCQ].fd = pa_asyncmsgq_get_fd(u->asyncmsgq);
pa_memchunk chunk;
int r;
-/* pa_log("loop"); */
+/* pa_log("loop"); */
/* Check whether there is a message for us to process */
if (pa_asyncmsgq_get(u->asyncmsgq, &object, &code, &data, &chunk, 0) == 0) {
/* Render some data and write it to the dsp */
if (u->sink && u->sink->thread_info.state != PA_SINK_SUSPENDED && (pollfd[POLLFD_DSP].revents & POLLOUT)) {
- ssize_t l;
- void *p;
- int loop = 0;
- l = u->out_fragment_size;
+ if (u->use_mmap) {
+ int ret;
- if (u->use_getospace) {
- audio_buf_info info;
+ if ((ret = mmap_write(u)) < 0)
+ goto fail;
- if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
- pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
- u->use_getospace = 0;
- } else {
- if (info.bytes >= l) {
- l = (info.bytes/l)*l;
- loop = 1;
+ pollfd[POLLFD_DSP].revents &= ~POLLOUT;
+
+ if (ret > 0)
+ continue;
+
+ } else {
+ ssize_t l;
+ void *p;
+ int loop = 0;
+
+ l = u->out_fragment_size;
+
+ if (u->use_getospace) {
+ audio_buf_info info;
+
+ if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
+ pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
+ u->use_getospace = 0;
+ } else {
+ if (info.bytes >= l) {
+ l = (info.bytes/l)*l;
+ loop = 1;
+ }
}
}
+
+ do {
+ ssize_t t;
+
+ pa_assert(l > 0);
+
+ if (u->memchunk.length <= 0)
+ pa_sink_render(u->sink, l, &u->memchunk);
+
+ pa_assert(u->memchunk.length > 0);
+
+ p = pa_memblock_acquire(u->memchunk.memblock);
+ t = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
+ pa_memblock_release(u->memchunk.memblock);
+
+/* pa_log("wrote %i bytes of %u", t, l); */
+
+ pa_assert(t != 0);
+
+ if (t < 0) {
+
+ if (errno == EINTR)
+ continue;
+
+ else if (errno == EAGAIN) {
+ pa_log_debug("EAGAIN");
+
+ pollfd[POLLFD_DSP].revents &= ~POLLOUT;
+ break;
+
+ } else {
+ pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno));
+ goto fail;
+ }
+
+ } else {
+
+ u->memchunk.index += t;
+ u->memchunk.length -= t;
+
+ if (u->memchunk.length <= 0) {
+ pa_memblock_unref(u->memchunk.memblock);
+ pa_memchunk_reset(&u->memchunk);
+ }
+
+ l -= t;
+
+ pollfd[POLLFD_DSP].revents &= ~POLLOUT;
+ }
+
+ } while (loop && l > 0);
+
+ continue;
}
+ }
- do {
- ssize_t t;
-
- pa_assert(l > 0);
+ /* Try to read some data and pass it on to the source driver */
- if (u->memchunk.length <= 0)
- pa_sink_render(u->sink, l, &u->memchunk);
+ if (u->source && u->source->thread_info.state != PA_SOURCE_SUSPENDED && ((pollfd[POLLFD_DSP].revents & POLLIN))) {
- pa_assert(u->memchunk.length > 0);
+ if (u->use_mmap) {
+ int ret;
- p = pa_memblock_acquire(u->memchunk.memblock);
- t = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
- pa_memblock_release(u->memchunk.memblock);
+ if ((ret = mmap_read(u)) < 0)
+ goto fail;
-/* pa_log("wrote %i bytes", t); */
+ pollfd[POLLFD_DSP].revents &= ~POLLIN;
- pa_assert(t != 0);
+ if (ret > 0)
+ continue;
- if (t < 0) {
+ } else {
- if (errno == EINTR)
- continue;
+ void *p;
+ ssize_t l;
+ pa_memchunk memchunk;
+ int loop = 0;
- else if (errno == EAGAIN) {
+ l = u->in_fragment_size;
- pollfd[POLLFD_DSP].revents &= ~POLLOUT;
- break;
+ if (u->use_getispace) {
+ audio_buf_info info;
+ if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
+ pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
+ u->use_getispace = 0;
} else {
- pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno));
- goto fail;
+ if (info.bytes >= l) {
+ l = (info.bytes/l)*l;
+ loop = 1;
+ }
}
-
- } else {
-
- u->memchunk.index += t;
- u->memchunk.length -= t;
-
- if (u->memchunk.length <= 0) {
- pa_memblock_unref(u->memchunk.memblock);
- pa_memchunk_reset(&u->memchunk);
- }
-
- l -= t;
-
- pollfd[POLLFD_DSP].revents &= ~POLLOUT;
}
- } while (loop && l > 0);
-
- continue;
- }
+ do {
+ ssize_t t;
- /* Try to read some data and pass it on to the source driver */
+ pa_assert(l > 0);
- if (u->source && u->source->thread_info.state != PA_SOURCE_SUSPENDED && ((pollfd[POLLFD_DSP].revents & POLLIN))) {
- void *p;
- ssize_t l;
- pa_memchunk memchunk;
- int loop = 0;
+ memchunk.memblock = pa_memblock_new(u->core->mempool, l);
- l = u->in_fragment_size;
+ p = pa_memblock_acquire(memchunk.memblock);
+ t = pa_read(u->fd, p, l, &read_type);
+ pa_memblock_release(memchunk.memblock);
- if (u->use_getispace) {
- audio_buf_info info;
+ pa_assert(t != 0); /* EOF cannot happen */
- if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
- pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
- u->use_getispace = 0;
- } else {
- if (info.bytes >= l) {
- l = (info.bytes/l)*l;
- loop = 1;
- }
- }
- }
+/* pa_log("read %i bytes of %u", t, l); */
+
+ if (t < 0) {
+ pa_memblock_unref(memchunk.memblock);
- do {
- ssize_t t;
+ if (errno == EINTR)
+ continue;
- pa_assert(l > 0);
+ else if (errno == EAGAIN) {
+ pa_log_debug("EAGAIN");
- memchunk.memblock = pa_memblock_new(u->core->mempool, l);
+ pollfd[POLLFD_DSP].revents &= ~POLLIN;
+ break;
- p = pa_memblock_acquire(memchunk.memblock);
- t = pa_read(u->fd, p, l, &read_type);
- pa_memblock_release(memchunk.memblock);
+ } else {
+ pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
+ goto fail;
+ }
- pa_assert(t != 0); /* EOF cannot happen */
+ } else {
+ memchunk.index = 0;
+ memchunk.length = t;
- if (t < 0) {
- pa_memblock_unref(memchunk.memblock);
+ pa_source_post(u->source, &memchunk);
+ pa_memblock_unref(memchunk.memblock);
- if (errno == EINTR)
- continue;
+ l -= t;
- else if (errno == EAGAIN) {
pollfd[POLLFD_DSP].revents &= ~POLLIN;
- break;
-
- } else {
- pa_log("Faile to read data from DSP: %s", pa_cstrerror(errno));
- goto fail;
}
+ } while (loop && l > 0);
- } else {
- memchunk.index = 0;
- memchunk.length = t;
-
- pa_source_post(u->source, &memchunk);
- pa_memblock_unref(memchunk.memblock);
-
- l -= t;
-
- pollfd[POLLFD_DSP].revents &= ~POLLIN;
- }
- } while (loop && l > 0);
-
- continue;
+ continue;
+ }
}
-
if (u->fd >= 0) {
pollfd[POLLFD_DSP].fd = u->fd;
pollfd[POLLFD_DSP].events =
if (pa_asyncmsgq_before_poll(u->asyncmsgq) < 0)
continue;
-/* pa_log("polling for %i", u->fd >= 0 ? pollfd[POLLFD_DSP].events : -1); */
+/* pa_log("polling for %i (legend: %i=POLLIN, %i=POLLOUT)", u->fd >= 0 ? pollfd[POLLFD_DSP].events : -1, POLLIN, POLLOUT); */
r = poll(pollfd, u->fd >= 0 ? POLLFD_MAX : POLLFD_DSP, -1);
-/* pa_log("polling got dsp=%i amq=%i (%i)", r > 0 ? pollfd[POLLFD_DSP].revents : 0, r > 0 ? pollfd[POLLFD_ASYNCQ].revents : 0, r); */
+/* pa_log("polling got dsp=%i amq=%i (%i)", r > 0 ? pollfd[POLLFD_DSP].revents : 0, r > 0 ? pollfd[POLLFD_ASYNCQ].revents : 0, r); */
pa_asyncmsgq_after_poll(u->asyncmsgq);
struct userdata *u = NULL;
const char *p;
int fd = -1;
- int nfrags, frag_size, in_frag_size, out_frag_size;
- int mode;
- int record = 1, playback = 1;
+ int nfrags, frag_size;
+ int mode, caps;
+ int record = 1, playback = 1, use_mmap = 1;
pa_sample_spec ss;
pa_channel_map map;
pa_modargs *ma = NULL;
char hwdesc[64], *t;
const char *name;
- char *name_buf = NULL;
int namereg_fail;
assert(c);
goto fail;
}
- /* Fix latency to 100ms */
- nfrags = 12;
- frag_size = pa_bytes_per_second(&ss)/128;
+ nfrags = DEFAULT_NFRAGS;
+ frag_size = pa_usec_to_bytes(DEFAULT_FRAGSIZE_MSEC*1000, &ss);
+ if (frag_size <= 0)
+ frag_size = pa_frame_size(&ss);
if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) {
pa_log("Failed to parse fragments arguments");
goto fail;
}
- if ((fd = pa_oss_open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, NULL)) < 0)
+ if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
+ pa_log("Failed to parse mmap argument.");
+ goto fail;
+ }
+
+ if ((fd = pa_oss_open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, &caps)) < 0)
goto fail;
+ if (use_mmap && (!(caps & DSP_CAP_MMAP) || !(caps & DSP_CAP_TRIGGER))) {
+ pa_log("OSS device not mmap capable, falling back to UNIX read/write mode");
+ use_mmap = 0;
+ }
+
if (pa_oss_get_hw_description(p, hwdesc, sizeof(hwdesc)) >= 0)
pa_log_info("Hardware name is '%s'.", hwdesc);
else
goto fail;
}
assert(frag_size);
- in_frag_size = out_frag_size = frag_size;
u = pa_xnew0(struct userdata, 1);
u->core = c;
u->use_input_volume = u->use_pcm_volume = 1;
u->mode = mode;
u->device_name = pa_xstrdup(p);
- u->nfrags = nfrags;
- u->frag_size = frag_size;
+ u->in_nfrags = u->out_nfrags = u->nfrags = nfrags;
+ u->out_fragment_size = u->in_fragment_size = u->frag_size = frag_size;
+ u->use_mmap = use_mmap;
pa_assert_se(u->asyncmsgq = pa_asyncmsgq_new(0));
if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
pa_log_info("Input -- %u fragments of size %u.", info.fragstotal, info.fragsize);
- in_frag_size = info.fragsize;
+ u->in_fragment_size = info.fragsize;
+ u->in_nfrags = info.fragstotal;
u->use_getispace = 1;
}
if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
pa_log_info("Output -- %u fragments of size %u.", info.fragstotal, info.fragsize);
- out_frag_size = info.fragsize;
+ u->out_fragment_size = info.fragsize;
+ u->out_nfrags = info.fragstotal;
u->use_getospace = 1;
}
+ u->in_hwbuf_size = u->in_nfrags * u->in_fragment_size;
+ u->out_hwbuf_size = u->out_nfrags * u->out_fragment_size;
+
if (mode != O_WRONLY) {
+ char *name_buf = NULL;
+
+ if (use_mmap) {
+ if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, fd, 0)) == MAP_FAILED) {
+ if (mode == O_RDWR) {
+ pa_log_debug("mmap() failed for input. Changing to O_WRONLY mode.");
+ mode = O_WRONLY;
+ goto try_write;
+ } else {
+ pa_log("mmap(): %s", pa_cstrerror(errno));
+ goto fail;
+ }
+ }
+
+ pa_log_debug("Successfully mmap()ed input buffer.");
+ }
+
if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
namereg_fail = 1;
else {
namereg_fail = 0;
}
- if (!(u->source = pa_source_new(c, __FILE__, name, namereg_fail, &ss, &map)))
+ u->source = pa_source_new(c, __FILE__, name, namereg_fail, &ss, &map);
+ pa_xfree(name_buf);
+ if (!u->source)
goto fail;
u->source->parent.process_msg = source_process_msg;
pa_xfree(t);
u->source->is_hardware = 1;
u->source->refresh_volume = 1;
- } else
- u->source = NULL;
- pa_xfree(name_buf);
- name_buf = NULL;
+ if (use_mmap)
+ u->in_mmap_memblocks = pa_xnew0(pa_memblock*, u->in_nfrags);
+ }
+try_write:
+
if (mode != O_RDONLY) {
+ char *name_buf = NULL;
+
+ if (use_mmap) {
+ if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) {
+ if (mode == O_RDWR) {
+ pa_log_debug("mmap() failed for input. Changing to O_WRONLY mode.");
+ mode = O_WRONLY;
+ goto go_on;
+ } else {
+ pa_log("mmap(): %s", pa_cstrerror(errno));
+ goto fail;
+ }
+ }
+
+ pa_log_debug("Successfully mmap()ed output buffer.");
+ pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
+ }
+
if ((name = pa_modargs_get_value(ma, "sink_name", NULL)))
namereg_fail = 1;
else {
namereg_fail = 0;
}
- if (!(u->sink = pa_sink_new(c, __FILE__, name, namereg_fail, &ss, &map)))
+ u->sink = pa_sink_new(c, __FILE__, name, namereg_fail, &ss, &map);
+ pa_xfree(name_buf);
+ if (!u->sink)
goto fail;
u->sink->parent.process_msg = sink_process_msg;
pa_xfree(t);
u->sink->is_hardware = 1;
u->sink->refresh_volume = 1;
- } else
- u->sink = NULL;
- pa_xfree(name_buf);
- name_buf = NULL;
+ if (use_mmap)
+ u->out_mmap_memblocks = pa_xnew0(pa_memblock*, u->out_nfrags);
+ }
- assert(u->source || u->sink);
+go_on:
+
+ pa_assert(u->source || u->sink);
u->fd = fd;
pa_memchunk_reset(&u->memchunk);
- u->sample_size = pa_frame_size(&ss);
-
- u->out_fragment_size = out_frag_size;
- u->in_fragment_size = in_frag_size;
if (!(u->thread = pa_thread_new(thread_func, u))) {
pa_log("Failed to create thread.");
if (ma)
pa_modargs_free(ma);
- pa_xfree(name_buf);
-
return -1;
}
if (u->memchunk.memblock)
pa_memblock_unref(u->memchunk.memblock);
+ if (u->in_mmap && u->in_mmap != MAP_FAILED)
+ munmap(u->in_mmap, u->in_hwbuf_size);
+
+ if (u->out_mmap && u->out_mmap != MAP_FAILED)
+ munmap(u->out_mmap, u->out_hwbuf_size);
+
if (u->fd >= 0)
close(u->fd);
+ if (u->out_mmap_memblocks) {
+ unsigned i;
+ for (i = 0; i < u->out_nfrags; i++)
+ if (u->out_mmap_memblocks[i])
+ pa_memblock_unref_fixed(u->out_mmap_memblocks[i]);
+ pa_xfree(u->out_mmap_memblocks);
+ }
+
+ if (u->in_mmap_memblocks) {
+ unsigned i;
+ for (i = 0; i < u->in_nfrags; i++)
+ if (u->in_mmap_memblocks[i])
+ pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
+ pa_xfree(u->in_mmap_memblocks);
+ }
+
pa_xfree(u->device_name);
pa_xfree(u);
projects / profile / ivi / pulseaudio.git / commitdiff