-/* $Id$ */
-
/***
This file is part of PulseAudio.
- Copyright 2004-2006 Lennart Poettering
+ Copyright 2004-2008 Lennart Poettering
Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
PulseAudio is free software; you can redistribute it and/or modify
#include <asoundlib.h>
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+#include <valgrind/memcheck.h>
+#endif
+
#include <pulse/xmalloc.h>
#include <pulse/util.h>
+#include <pulse/timeval.h>
#include <pulsecore/core.h>
#include <pulsecore/module.h>
#include <pulsecore/core-error.h>
#include <pulsecore/thread-mq.h>
#include <pulsecore/rtpoll.h>
+#include <pulsecore/rtclock.h>
+#include <pulsecore/time-smoother.h>
#include "alsa-util.h"
#include "module-alsa-sink-symdef.h"
PA_MODULE_USAGE(
"sink_name=<name for the sink> "
"device=<ALSA device> "
- "device_id=<ALSA device id> "
+ "device_id=<ALSA card index> "
"format=<sample format> "
- "channels=<number of channels> "
"rate=<sample rate> "
+ "channels=<number of channels> "
+ "channel_map=<channel map> "
"fragments=<number of fragments> "
"fragment_size=<fragment size> "
- "channel_map=<channel map> "
- "mmap=<enable memory mapping?>");
+ "mmap=<enable memory mapping?> "
+ "tsched=<enable system timer based scheduling mode?> "
+ "tsched_buffer_size=<buffer size when using timer based scheduling> "
+ "tsched_buffer_watermark=<lower fill watermark>");
+
+static const char* const valid_modargs[] = {
+ "sink_name",
+ "device",
+ "device_id",
+ "format",
+ "rate",
+ "channels",
+ "channel_map",
+ "fragments",
+ "fragment_size",
+ "mmap",
+ "tsched",
+ "tsched_buffer_size",
+ "tsched_buffer_watermark",
+ NULL
+};
#define DEFAULT_DEVICE "default"
+#define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
+#define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
+#define TSCHED_MIN_SLEEP_USEC (3*PA_USEC_PER_MSEC) /* 3ms */
+#define TSCHED_MIN_WAKEUP_USEC (3*PA_USEC_PER_MSEC) /* 3ms */
struct userdata {
pa_core *core;
snd_mixer_t *mixer_handle;
snd_mixer_elem_t *mixer_elem;
long hw_volume_max, hw_volume_min;
+ long hw_dB_max, hw_dB_min;
+ pa_bool_t hw_dB_supported;
+ pa_bool_t mixer_seperate_channels;
+ pa_cvolume hardware_volume;
- size_t frame_size, fragment_size, hwbuf_size;
+ size_t frame_size, fragment_size, hwbuf_size, tsched_watermark;
unsigned nfragments;
pa_memchunk memchunk;
char *device_name;
- pa_bool_t use_mmap;
+ pa_bool_t use_mmap, use_tsched;
- pa_bool_t first;
+ pa_bool_t first, after_rewind;
pa_rtpoll_item *alsa_rtpoll_item;
snd_mixer_selem_channel_id_t mixer_map[SND_MIXER_SCHN_LAST];
-};
-static const char* const valid_modargs[] = {
- "device",
- "device_id",
- "sink_name",
- "format",
- "channels",
- "rate",
- "fragments",
- "fragment_size",
- "channel_map",
- "mmap",
- NULL
+ pa_smoother *smoother;
+ int64_t frame_index;
+ uint64_t since_start;
+
+ snd_pcm_sframes_t hwbuf_unused_frames;
};
-static int mmap_write(struct userdata *u) {
+static void fix_tsched_watermark(struct userdata *u) {
+ size_t max_use;
+ size_t min_sleep, min_wakeup;
+ pa_assert(u);
+
+ max_use = u->hwbuf_size - (size_t) u->hwbuf_unused_frames * u->frame_size;
+
+ min_sleep = pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC, &u->sink->sample_spec);
+ min_wakeup = pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC, &u->sink->sample_spec);
+
+ if (min_sleep > max_use/2)
+ min_sleep = pa_frame_align(max_use/2, &u->sink->sample_spec);
+ if (min_sleep < u->frame_size)
+ min_sleep = u->frame_size;
+
+ if (min_wakeup > max_use/2)
+ min_wakeup = pa_frame_align(max_use/2, &u->sink->sample_spec);
+ if (min_wakeup < u->frame_size)
+ min_wakeup = u->frame_size;
+
+ if (u->tsched_watermark > max_use-min_sleep)
+ u->tsched_watermark = max_use-min_sleep;
+
+ if (u->tsched_watermark < min_wakeup)
+ u->tsched_watermark = min_wakeup;
+}
+
+static void hw_sleep_time(struct userdata *u, pa_usec_t *sleep_usec, pa_usec_t*process_usec) {
+ pa_usec_t usec, wm;
+
+ pa_assert(sleep_usec);
+ pa_assert(process_usec);
+
+ pa_assert(u);
+
+ usec = pa_sink_get_requested_latency_within_thread(u->sink);
+
+ if (usec == (pa_usec_t) -1)
+ usec = pa_bytes_to_usec(u->hwbuf_size, &u->sink->sample_spec);
+
+/* pa_log_debug("hw buffer time: %u ms", (unsigned) (usec / PA_USEC_PER_MSEC)); */
+
+ wm = pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec);
+
+ if (usec >= wm) {
+ *sleep_usec = usec - wm;
+ *process_usec = wm;
+ } else
+ *process_usec = *sleep_usec = usec / 2;
+
+/* pa_log_debug("after watermark: %u ms", (unsigned) (*sleep_usec / PA_USEC_PER_MSEC)); */
+}
+
+static int try_recover(struct userdata *u, const char *call, int err) {
+ pa_assert(u);
+ pa_assert(call);
+ pa_assert(err < 0);
+
+ pa_log_debug("%s: %s", call, snd_strerror(err));
+
+ pa_assert(err != -EAGAIN);
+
+ if (err == -EPIPE)
+ pa_log_debug("%s: Buffer underrun!", call);
+
+ if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) == 0) {
+ u->first = TRUE;
+ u->since_start = 0;
+ return 0;
+ }
+
+ pa_log("%s: %s", call, snd_strerror(err));
+ return -1;
+}
+
+static size_t check_left_to_play(struct userdata *u, snd_pcm_sframes_t n) {
+ size_t left_to_play;
+
+ if ((size_t) n*u->frame_size < u->hwbuf_size)
+ left_to_play = u->hwbuf_size - ((size_t) n*u->frame_size);
+ else
+ left_to_play = 0;
+
+ if (left_to_play > 0) {
+/* pa_log_debug("%0.2f ms left to play", (double) pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) / PA_USEC_PER_MSEC); */
+ } else if (!u->first && !u->after_rewind) {
+ pa_log_info("Underrun!");
+
+ if (u->use_tsched) {
+ size_t old_watermark = u->tsched_watermark;
+
+ u->tsched_watermark *= 2;
+ fix_tsched_watermark(u);
+
+ if (old_watermark != u->tsched_watermark)
+ pa_log_notice("Increasing wakeup watermark to %0.2f ms",
+ (double) pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec) / PA_USEC_PER_MSEC);
+ }
+ }
+
+ return left_to_play;
+}
+
+static int mmap_write(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled) {
int work_done = 0;
+ pa_usec_t max_sleep_usec = 0, process_usec = 0;
+ size_t left_to_play;
pa_assert(u);
pa_sink_assert_ref(u->sink);
+ if (u->use_tsched)
+ hw_sleep_time(u, &max_sleep_usec, &process_usec);
+
for (;;) {
- pa_memchunk chunk;
- void *p;
snd_pcm_sframes_t n;
- int err;
- const snd_pcm_channel_area_t *areas;
- snd_pcm_uframes_t offset, frames;
+ int r;
- if ((n = snd_pcm_avail_update(u->pcm_handle)) < 0) {
+ snd_pcm_hwsync(u->pcm_handle);
- if (n == -EPIPE) {
- pa_log_debug("snd_pcm_avail_update: Buffer underrun!");
- u->first = TRUE;
- }
+ /* First we determine how many samples are missing to fill the
+ * buffer up to 100% */
- if ((err = snd_pcm_recover(u->pcm_handle, n, 1)) == 0)
- continue;
+ if (PA_UNLIKELY((n = pa_alsa_safe_avail_update(u->pcm_handle, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
- if (err == -EAGAIN)
- return work_done;
+ if ((r = try_recover(u, "snd_pcm_avail_update", (int) n)) == 0)
+ continue;
- pa_log("snd_pcm_avail_update: %s", snd_strerror(err));
- return -1;
+ return r;
}
-/* pa_log("Got request for %i samples", (int) n); */
+ left_to_play = check_left_to_play(u, n);
- if (n <= 0)
- return work_done;
+ if (u->use_tsched)
- frames = n;
+ /* We won't fill up the playback buffer before at least
+ * half the sleep time is over because otherwise we might
+ * ask for more data from the clients then they expect. We
+ * need to guarantee that clients only have to keep around
+ * a single hw buffer length. */
- if ((err = snd_pcm_mmap_begin(u->pcm_handle, &areas, &offset, &frames)) < 0) {
+ if (!polled &&
+ pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) > process_usec+max_sleep_usec/2)
+ break;
- if (err == -EPIPE) {
- pa_log_debug("snd_pcm_mmap_begin: Buffer underrun!");
- u->first = TRUE;
- }
-
- if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) == 0)
- continue;
+ if (PA_UNLIKELY(n <= u->hwbuf_unused_frames)) {
- if (err == -EAGAIN)
- return work_done;
+ if (polled)
+ pa_log("ALSA woke us up to write new data to the device, but there was actually nothing to write! "
+ "Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio developers.");
- pa_log("Failed to write data to DSP: %s", snd_strerror(err));
- return -1;
+ break;
}
- /* Check these are multiples of 8 bit */
- pa_assert((areas[0].first & 7) == 0);
- pa_assert((areas[0].step & 7)== 0);
+ n -= u->hwbuf_unused_frames;
- /* We assume a single interleaved memory buffer */
- pa_assert((areas[0].first >> 3) == 0);
- pa_assert((areas[0].step >> 3) == u->frame_size);
+ polled = FALSE;
- p = (uint8_t*) areas[0].addr + (offset * u->frame_size);
+/* pa_log_debug("Filling up"); */
- chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, 1);
- chunk.length = pa_memblock_get_length(chunk.memblock);
- chunk.index = 0;
+ for (;;) {
+ pa_memchunk chunk;
+ void *p;
+ int err;
+ const snd_pcm_channel_area_t *areas;
+ snd_pcm_uframes_t offset, frames = (snd_pcm_uframes_t) n;
+ snd_pcm_sframes_t sframes;
- pa_sink_render_into_full(u->sink, &chunk);
+/* pa_log_debug("%lu frames to write", (unsigned long) frames); */
- /* FIXME: Maybe we can do something to keep this memory block
- * a little bit longer around? */
- pa_memblock_unref_fixed(chunk.memblock);
+ if (PA_UNLIKELY((err = pa_alsa_safe_mmap_begin(u->pcm_handle, &areas, &offset, &frames, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
- if ((err = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0) {
+ if ((r = try_recover(u, "snd_pcm_mmap_begin", err)) == 0)
+ continue;
- if (err == -EPIPE) {
- pa_log_debug("snd_pcm_mmap_commit: Buffer underrun!");
- u->first = TRUE;
+ return r;
}
- if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) == 0)
- continue;
+ /* Make sure that if these memblocks need to be copied they will fit into one slot */
+ if (frames > pa_mempool_block_size_max(u->sink->core->mempool)/u->frame_size)
+ frames = pa_mempool_block_size_max(u->sink->core->mempool)/u->frame_size;
- if (err == -EAGAIN)
- return work_done;
+ /* Check these are multiples of 8 bit */
+ pa_assert((areas[0].first & 7) == 0);
+ pa_assert((areas[0].step & 7)== 0);
- pa_log("Failed to write data to DSP: %s", snd_strerror(err));
- return -1;
- }
+ /* We assume a single interleaved memory buffer */
+ pa_assert((areas[0].first >> 3) == 0);
+ pa_assert((areas[0].step >> 3) == u->frame_size);
+
+ p = (uint8_t*) areas[0].addr + (offset * u->frame_size);
+
+ chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, TRUE);
+ chunk.length = pa_memblock_get_length(chunk.memblock);
+ chunk.index = 0;
+
+ pa_sink_render_into_full(u->sink, &chunk);
+
+ /* FIXME: Maybe we can do something to keep this memory block
+ * a little bit longer around? */
+ pa_memblock_unref_fixed(chunk.memblock);
+
+ if (PA_UNLIKELY((sframes = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0)) {
+
+ if ((r = try_recover(u, "snd_pcm_mmap_commit", (int) sframes)) == 0)
+ continue;
+
+ return r;
+ }
- work_done = 1;
+ work_done = 1;
- if (frames >= (snd_pcm_uframes_t) n)
- return work_done;
+ u->frame_index += (int64_t) frames;
+ u->since_start += frames * u->frame_size;
-/* pa_log("wrote %i samples", (int) frames); */
+/* pa_log_debug("wrote %lu frames", (unsigned long) frames); */
+
+ if (frames >= (snd_pcm_uframes_t) n)
+ break;
+
+ n -= (snd_pcm_sframes_t) frames;
+ }
}
+
+ *sleep_usec = pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) - process_usec;
+ return work_done;
}
-static int unix_write(struct userdata *u) {
- snd_pcm_status_t *status;
+static int unix_write(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled) {
int work_done = 0;
-
- snd_pcm_status_alloca(&status);
+ pa_usec_t max_sleep_usec = 0, process_usec = 0;
+ size_t left_to_play;
pa_assert(u);
pa_sink_assert_ref(u->sink);
+ if (u->use_tsched)
+ hw_sleep_time(u, &max_sleep_usec, &process_usec);
+
for (;;) {
- void *p;
- snd_pcm_sframes_t t;
- ssize_t l;
- int err;
+ snd_pcm_sframes_t n;
+ int r;
- if ((err = snd_pcm_status(u->pcm_handle, status)) < 0) {
- pa_log("Failed to query DSP status data: %s", snd_strerror(err));
- return -1;
+ snd_pcm_hwsync(u->pcm_handle);
+
+ if (PA_UNLIKELY((n = pa_alsa_safe_avail_update(u->pcm_handle, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
+
+ if ((r = try_recover(u, "snd_pcm_avail_update", (int) n)) == 0)
+ continue;
+
+ return r;
}
- if (snd_pcm_status_get_avail_max(status)*u->frame_size >= u->hwbuf_size)
- pa_log_debug("Buffer underrun!");
+ left_to_play = check_left_to_play(u, n);
- l = snd_pcm_status_get_avail(status) * u->frame_size;
+ if (u->use_tsched)
-/* pa_log("%u bytes to write", l); */
+ /* We won't fill up the playback buffer before at least
+ * half the sleep time is over because otherwise we might
+ * ask for more data from the clients then they expect. We
+ * need to guarantee that clients only have to keep around
+ * a single hw buffer length. */
- if (l <= 0)
- return work_done;
+ if (!polled &&
+ pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) > process_usec+max_sleep_usec/2)
+ break;
- if (u->memchunk.length <= 0)
- pa_sink_render(u->sink, l, &u->memchunk);
+ if (PA_UNLIKELY(n <= u->hwbuf_unused_frames)) {
- pa_assert(u->memchunk.length > 0);
+ if (polled)
+ pa_log("ALSA woke us up to write new data to the device, but there was actually nothing to write! "
+ "Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio developers.");
- p = pa_memblock_acquire(u->memchunk.memblock);
- t = snd_pcm_writei(u->pcm_handle, (const uint8_t*) p + u->memchunk.index, u->memchunk.length / u->frame_size);
- pa_memblock_release(u->memchunk.memblock);
+ break;
+ }
-/* pa_log("wrote %i bytes of %u (%u)", t*u->frame_size, u->memchunk.length, l); */
+ n -= u->hwbuf_unused_frames;
- pa_assert(t != 0);
+ polled = FALSE;
- if (t < 0) {
+ for (;;) {
+ snd_pcm_sframes_t frames;
+ void *p;
- if ((t = snd_pcm_recover(u->pcm_handle, t, 1)) == 0)
- continue;
+/* pa_log_debug("%lu frames to write", (unsigned long) frames); */
- if (t == -EAGAIN) {
- pa_log_debug("EAGAIN");
- return work_done;
- } else {
- pa_log("Failed to write data to DSP: %s", snd_strerror(t));
- return -1;
+ if (u->memchunk.length <= 0)
+ pa_sink_render(u->sink, (size_t) n * u->frame_size, &u->memchunk);
+
+ pa_assert(u->memchunk.length > 0);
+
+ frames = (snd_pcm_sframes_t) (u->memchunk.length / u->frame_size);
+
+ if (frames > n)
+ frames = n;
+
+ p = pa_memblock_acquire(u->memchunk.memblock);
+ frames = snd_pcm_writei(u->pcm_handle, (const uint8_t*) p + u->memchunk.index, (snd_pcm_uframes_t) frames);
+ pa_memblock_release(u->memchunk.memblock);
+
+ pa_assert(frames != 0);
+
+ if (PA_UNLIKELY(frames < 0)) {
+
+ if ((r = try_recover(u, "snd_pcm_writei", (int) frames)) == 0)
+ continue;
+
+ return r;
}
- }
- u->memchunk.index += t * u->frame_size;
- u->memchunk.length -= t * u->frame_size;
+ u->memchunk.index += (size_t) frames * u->frame_size;
+ u->memchunk.length -= (size_t) frames * u->frame_size;
- if (u->memchunk.length <= 0) {
- pa_memblock_unref(u->memchunk.memblock);
- pa_memchunk_reset(&u->memchunk);
- }
+ if (u->memchunk.length <= 0) {
+ pa_memblock_unref(u->memchunk.memblock);
+ pa_memchunk_reset(&u->memchunk);
+ }
+
+ work_done = 1;
- work_done = 1;
+ u->frame_index += frames;
+ u->since_start += (size_t) frames * u->frame_size;
- if (t * u->frame_size >= (unsigned) l)
- return work_done;
+/* pa_log_debug("wrote %lu frames", (unsigned long) frames); */
+
+ if (frames >= n)
+ break;
+
+ n -= frames;
+ }
}
+
+ *sleep_usec = pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) - process_usec;
+ return work_done;
}
-static pa_usec_t sink_get_latency(struct userdata *u) {
- pa_usec_t r = 0;
- snd_pcm_status_t *status;
- snd_pcm_sframes_t frames = 0;
+static void update_smoother(struct userdata *u) {
+ snd_pcm_sframes_t delay = 0;
+ int64_t frames;
int err;
+ pa_usec_t now1, now2;
+/* struct timeval timestamp; */
+ snd_pcm_status_t *status;
snd_pcm_status_alloca(&status);
pa_assert(u);
pa_assert(u->pcm_handle);
- if ((err = snd_pcm_status(u->pcm_handle, status)) < 0)
- pa_log("Failed to get delay: %s", snd_strerror(err));
- else
- frames = snd_pcm_status_get_delay(status);
+ /* Let's update the time smoother */
+
+ snd_pcm_hwsync(u->pcm_handle);
+ snd_pcm_avail_update(u->pcm_handle);
+
+/* if (PA_UNLIKELY((err = snd_pcm_status(u->pcm_handle, status)) < 0)) { */
+/* pa_log("Failed to query DSP status data: %s", snd_strerror(err)); */
+/* return; */
+/* } */
+
+/* delay = snd_pcm_status_get_delay(status); */
+
+ if (PA_UNLIKELY((err = snd_pcm_delay(u->pcm_handle, &delay)) < 0)) {
+ pa_log("Failed to query DSP status data: %s", snd_strerror(err));
+ return;
+ }
+
+ frames = u->frame_index - delay;
+
+/* pa_log_debug("frame_index = %llu, delay = %llu, p = %llu", (unsigned long long) u->frame_index, (unsigned long long) delay, (unsigned long long) frames); */
+
+/* snd_pcm_status_get_tstamp(status, ×tamp); */
+/* pa_rtclock_from_wallclock(×tamp); */
+/* now1 = pa_timeval_load(×tamp); */
+
+ now1 = pa_rtclock_usec();
+ now2 = pa_bytes_to_usec((uint64_t) frames * u->frame_size, &u->sink->sample_spec);
+ pa_smoother_put(u->smoother, now1, now2);
+}
+
+static pa_usec_t sink_get_latency(struct userdata *u) {
+ pa_usec_t r = 0;
+ int64_t delay;
+ pa_usec_t now1, now2;
+
+ pa_assert(u);
- if (frames > 0)
- r = pa_bytes_to_usec(frames * u->frame_size, &u->sink->sample_spec);
+ now1 = pa_rtclock_usec();
+ now2 = pa_smoother_get(u->smoother, now1);
+
+ delay = (int64_t) pa_bytes_to_usec((uint64_t) u->frame_index * u->frame_size, &u->sink->sample_spec) - (int64_t) now2;
+
+ if (delay > 0)
+ r = (pa_usec_t) delay;
if (u->memchunk.memblock)
r += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
}
static int build_pollfd(struct userdata *u) {
- int err;
- struct pollfd *pollfd;
- int n;
-
pa_assert(u);
pa_assert(u->pcm_handle);
- if ((n = snd_pcm_poll_descriptors_count(u->pcm_handle)) < 0) {
- pa_log("snd_pcm_poll_descriptors_count() failed: %s", snd_strerror(n));
- return -1;
- }
-
if (u->alsa_rtpoll_item)
pa_rtpoll_item_free(u->alsa_rtpoll_item);
- u->alsa_rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, n);
- pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, NULL);
-
- if ((err = snd_pcm_poll_descriptors(u->pcm_handle, pollfd, n)) < 0) {
- pa_log("snd_pcm_poll_descriptors() failed: %s", snd_strerror(err));
+ if (!(u->alsa_rtpoll_item = pa_alsa_build_pollfd(u->pcm_handle, u->rtpoll)))
return -1;
- }
return 0;
}
pa_assert(u);
pa_assert(u->pcm_handle);
- /* Let's suspend */
- snd_pcm_drain(u->pcm_handle);
+ pa_smoother_pause(u->smoother, pa_rtclock_usec());
+
+ /* Let's suspend -- we don't call snd_pcm_drain() here since that might
+ * take awfully long with our long buffer sizes today. */
snd_pcm_close(u->pcm_handle);
u->pcm_handle = NULL;
return 0;
}
+static int update_sw_params(struct userdata *u) {
+ snd_pcm_uframes_t avail_min;
+ int err;
+
+ pa_assert(u);
+
+ /* Use the full buffer if noone asked us for anything specific */
+ u->hwbuf_unused_frames = 0;
+
+ if (u->use_tsched) {
+ pa_usec_t latency;
+
+ if ((latency = pa_sink_get_requested_latency_within_thread(u->sink)) != (pa_usec_t) -1) {
+ size_t b;
+
+ pa_log_debug("latency set to %0.2fms", (double) latency / PA_USEC_PER_MSEC);
+
+ b = pa_usec_to_bytes(latency, &u->sink->sample_spec);
+
+ /* We need at least one sample in our buffer */
+
+ if (PA_UNLIKELY(b < u->frame_size))
+ b = u->frame_size;
+
+ u->hwbuf_unused_frames = (snd_pcm_sframes_t)
+ (PA_LIKELY(b < u->hwbuf_size) ?
+ ((u->hwbuf_size - b) / u->frame_size) : 0);
+ }
+
+ fix_tsched_watermark(u);
+ }
+
+ pa_log_debug("hwbuf_unused_frames=%lu", (unsigned long) u->hwbuf_unused_frames);
+
+ /* We need at last one frame in the used part of the buffer */
+ avail_min = (snd_pcm_uframes_t) u->hwbuf_unused_frames + 1;
+
+ if (u->use_tsched) {
+ pa_usec_t sleep_usec, process_usec;
+
+ hw_sleep_time(u, &sleep_usec, &process_usec);
+ avail_min += pa_usec_to_bytes(sleep_usec, &u->sink->sample_spec);
+ }
+
+ pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min);
+
+ if ((err = pa_alsa_set_sw_params(u->pcm_handle, avail_min)) < 0) {
+ pa_log("Failed to set software parameters: %s", snd_strerror(err));
+ return err;
+ }
+
+ pa_sink_set_max_request(u->sink, u->hwbuf_size - (size_t) u->hwbuf_unused_frames * u->frame_size);
+
+ return 0;
+}
+
static int unsuspend(struct userdata *u) {
pa_sample_spec ss;
int err;
- pa_bool_t b;
+ pa_bool_t b, d;
unsigned nfrags;
snd_pcm_uframes_t period_size;
pa_log_info("Trying resume...");
snd_config_update_free_global();
- if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK)) < 0) {
+ if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_PLAYBACK,
+ /*SND_PCM_NONBLOCK|*/
+ SND_PCM_NO_AUTO_RESAMPLE|
+ SND_PCM_NO_AUTO_CHANNELS|
+ SND_PCM_NO_AUTO_FORMAT)) < 0) {
pa_log("Error opening PCM device %s: %s", u->device_name, snd_strerror(err));
goto fail;
}
nfrags = u->nfragments;
period_size = u->fragment_size / u->frame_size;
b = u->use_mmap;
+ d = u->use_tsched;
- if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, &b, TRUE)) < 0) {
+ if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, u->hwbuf_size / u->frame_size, &b, &d, TRUE)) < 0) {
pa_log("Failed to set hardware parameters: %s", snd_strerror(err));
goto fail;
}
- if (b != u->use_mmap) {
+ if (b != u->use_mmap || d != u->use_tsched) {
pa_log_warn("Resume failed, couldn't get original access mode.");
goto fail;
}
}
if (nfrags != u->nfragments || period_size*u->frame_size != u->fragment_size) {
- pa_log_warn("Resume failed, couldn't restore original fragment settings.");
+ pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
+ (unsigned long) u->nfragments, (unsigned long) u->fragment_size,
+ (unsigned long) nfrags, period_size * u->frame_size);
goto fail;
}
- if ((err = pa_alsa_set_sw_params(u->pcm_handle)) < 0) {
- pa_log("Failed to set software parameters: %s", snd_strerror(err));
+ if (update_sw_params(u) < 0)
goto fail;
- }
if (build_pollfd(u) < 0)
goto fail;
/* FIXME: We need to reload the volume somehow */
u->first = TRUE;
+ u->since_start = 0;
pa_log_info("Resumed successfully...");
switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
case PA_SINK_SUSPENDED:
- pa_assert(PA_SINK_OPENED(u->sink->thread_info.state));
+ pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
if (suspend(u) < 0)
return -1;
return 0;
if (mask & SND_CTL_EVENT_MASK_VALUE) {
- pa_sink_get_volume(u->sink);
- pa_sink_get_mute(u->sink);
+ pa_sink_get_volume(u->sink, TRUE);
+ pa_sink_get_mute(u->sink, TRUE);
}
return 0;
}
+static pa_volume_t from_alsa_volume(struct userdata *u, long alsa_vol) {
+
+ return (pa_volume_t) round(((double) (alsa_vol - u->hw_volume_min) * PA_VOLUME_NORM) /
+ (double) (u->hw_volume_max - u->hw_volume_min));
+}
+
+static long to_alsa_volume(struct userdata *u, pa_volume_t vol) {
+ long alsa_vol;
+
+ alsa_vol = (long) round(((double) vol * (double) (u->hw_volume_max - u->hw_volume_min))
+ / PA_VOLUME_NORM) + u->hw_volume_min;
+
+ return PA_CLAMP_UNLIKELY(alsa_vol, u->hw_volume_min, u->hw_volume_max);
+}
+
static int sink_get_volume_cb(pa_sink *s) {
struct userdata *u = s->userdata;
int err;
- int i;
+ unsigned i;
+ pa_cvolume r;
+ char t[PA_CVOLUME_SNPRINT_MAX];
pa_assert(u);
pa_assert(u->mixer_elem);
- for (i = 0; i < s->sample_spec.channels; i++) {
- long set_vol, vol;
+ if (u->mixer_seperate_channels) {
- pa_assert(snd_mixer_selem_has_playback_channel(u->mixer_elem, u->mixer_map[i]));
+ r.channels = s->sample_spec.channels;
- if ((err = snd_mixer_selem_get_playback_volume(u->mixer_elem, u->mixer_map[i], &vol)) < 0)
- goto fail;
+ for (i = 0; i < s->sample_spec.channels; i++) {
+ long alsa_vol;
+
+ if (u->hw_dB_supported) {
+
+ if ((err = snd_mixer_selem_get_playback_dB(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
+ goto fail;
+
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+ VALGRIND_MAKE_MEM_DEFINED(&alsa_vol, sizeof(alsa_vol));
+#endif
+
+ r.values[i] = pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0);
+ } else {
+
+ if ((err = snd_mixer_selem_get_playback_volume(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
+ goto fail;
+
+ r.values[i] = from_alsa_volume(u, alsa_vol);
+ }
+ }
+
+ } else {
+ long alsa_vol;
+
+ if (u->hw_dB_supported) {
+
+ if ((err = snd_mixer_selem_get_playback_dB(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
+ goto fail;
+
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+ VALGRIND_MAKE_MEM_DEFINED(&alsa_vol, sizeof(alsa_vol));
+#endif
+
+ pa_cvolume_set(&r, s->sample_spec.channels, pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0));
+
+ } else {
+
+ if ((err = snd_mixer_selem_get_playback_volume(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
+ goto fail;
+
+ pa_cvolume_set(&r, s->sample_spec.channels, from_alsa_volume(u, alsa_vol));
+ }
+ }
+
+ pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
+
+ if (!pa_cvolume_equal(&u->hardware_volume, &r)) {
- set_vol = (long) roundf(((float) s->volume.values[i] * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
+ u->hardware_volume = s->volume = r;
- /* Try to avoid superfluous volume changes */
- if (set_vol != vol)
- s->volume.values[i] = (pa_volume_t) roundf(((float) (vol - u->hw_volume_min) * PA_VOLUME_NORM) / (u->hw_volume_max - u->hw_volume_min));
+ if (u->hw_dB_supported) {
+ pa_cvolume reset;
+
+ /* Hmm, so the hardware volume changed, let's reset our software volume */
+
+ pa_cvolume_reset(&reset, s->sample_spec.channels);
+ pa_sink_set_soft_volume(s, &reset);
+ }
}
return 0;
fail:
pa_log_error("Unable to read volume: %s", snd_strerror(err));
- s->get_volume = NULL;
- s->set_volume = NULL;
return -1;
}
static int sink_set_volume_cb(pa_sink *s) {
struct userdata *u = s->userdata;
int err;
- int i;
+ unsigned i;
+ pa_cvolume r;
pa_assert(u);
pa_assert(u->mixer_elem);
- for (i = 0; i < s->sample_spec.channels; i++) {
- long alsa_vol;
+ if (u->mixer_seperate_channels) {
+
+ r.channels = s->sample_spec.channels;
+
+ for (i = 0; i < s->sample_spec.channels; i++) {
+ long alsa_vol;
+ pa_volume_t vol;
+
+ vol = s->volume.values[i];
+
+ if (u->hw_dB_supported) {
+
+ alsa_vol = (long) (pa_sw_volume_to_dB(vol) * 100);
+ alsa_vol += u->hw_dB_max;
+ alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_dB_min, u->hw_dB_max);
+
+ if ((err = snd_mixer_selem_set_playback_dB(u->mixer_elem, u->mixer_map[i], alsa_vol, 1)) < 0)
+ goto fail;
+
+ if ((err = snd_mixer_selem_get_playback_dB(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
+ goto fail;
+
+ r.values[i] = pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0);
+
+ } else {
+ alsa_vol = to_alsa_volume(u, vol);
+
+ if ((err = snd_mixer_selem_set_playback_volume(u->mixer_elem, u->mixer_map[i], alsa_vol)) < 0)
+ goto fail;
+
+ if ((err = snd_mixer_selem_get_playback_volume(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
+ goto fail;
+
+ r.values[i] = from_alsa_volume(u, alsa_vol);
+ }
+ }
+
+ } else {
pa_volume_t vol;
+ long alsa_vol;
- pa_assert(snd_mixer_selem_has_playback_channel(u->mixer_elem, u->mixer_map[i]));
+ vol = pa_cvolume_max(&s->volume);
- vol = s->volume.values[i];
+ if (u->hw_dB_supported) {
+ alsa_vol = (long) (pa_sw_volume_to_dB(vol) * 100);
+ alsa_vol += u->hw_dB_max;
+ alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_dB_min, u->hw_dB_max);
- if (vol > PA_VOLUME_NORM)
- vol = PA_VOLUME_NORM;
+ if ((err = snd_mixer_selem_set_playback_dB_all(u->mixer_elem, alsa_vol, 1)) < 0)
+ goto fail;
- alsa_vol = (long) roundf(((float) vol * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
+ if ((err = snd_mixer_selem_get_playback_dB(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
+ goto fail;
- if ((err = snd_mixer_selem_set_playback_volume(u->mixer_elem, u->mixer_map[i], alsa_vol)) < 0)
- goto fail;
+ pa_cvolume_set(&r, s->volume.channels, pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0));
+
+ } else {
+ alsa_vol = to_alsa_volume(u, vol);
+
+ if ((err = snd_mixer_selem_set_playback_volume_all(u->mixer_elem, alsa_vol)) < 0)
+ goto fail;
+
+ if ((err = snd_mixer_selem_get_playback_volume(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
+ goto fail;
+
+ pa_cvolume_set(&r, s->sample_spec.channels, from_alsa_volume(u, alsa_vol));
+ }
}
+ u->hardware_volume = r;
+
+ if (u->hw_dB_supported) {
+ char t[PA_CVOLUME_SNPRINT_MAX];
+
+ /* Match exactly what the user requested by software */
+
+ pa_sw_cvolume_divide(&r, &s->volume, &r);
+ pa_sink_set_soft_volume(s, &r);
+
+ pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->volume));
+ pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &u->hardware_volume));
+ pa_log_debug("Calculated software volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
+
+ } else
+
+ /* We can't match exactly what the user requested, hence let's
+ * at least tell the user about it */
+
+ s->volume = r;
+
return 0;
fail:
pa_log_error("Unable to set volume: %s", snd_strerror(err));
- s->get_volume = NULL;
- s->set_volume = NULL;
return -1;
}
if ((err = snd_mixer_selem_get_playback_switch(u->mixer_elem, 0, &sw)) < 0) {
pa_log_error("Unable to get switch: %s", snd_strerror(err));
-
- s->get_mute = NULL;
- s->set_mute = NULL;
return -1;
}
if ((err = snd_mixer_selem_set_playback_switch_all(u->mixer_elem, !s->muted)) < 0) {
pa_log_error("Unable to set switch: %s", snd_strerror(err));
+ return -1;
+ }
- s->get_mute = NULL;
- s->set_mute = NULL;
+ return 0;
+}
+
+static void sink_update_requested_latency_cb(pa_sink *s) {
+ struct userdata *u = s->userdata;
+ snd_pcm_sframes_t before;
+ pa_assert(u);
+
+ if (!u->pcm_handle)
+ return;
+
+ before = u->hwbuf_unused_frames;
+ update_sw_params(u);
+
+ /* Let's check whether we now use only a smaller part of the
+ buffer then before. If so, we need to make sure that subsequent
+ rewinds are relative to the new maxium fill level and not to the
+ current fill level. Thus, let's do a full rewind once, to clear
+ things up. */
+
+ if (u->hwbuf_unused_frames > before) {
+ pa_log_debug("Requesting rewind due to latency change.");
+ pa_sink_request_rewind(s, (size_t) -1);
+ }
+}
+
+static int process_rewind(struct userdata *u) {
+ snd_pcm_sframes_t unused;
+ size_t rewind_nbytes, unused_nbytes, limit_nbytes;
+ pa_assert(u);
+
+ /* Figure out how much we shall rewind and reset the counter */
+ rewind_nbytes = u->sink->thread_info.rewind_nbytes;
+ u->sink->thread_info.rewind_nbytes = 0;
+
+ if (rewind_nbytes <= 0)
+ goto finish;
+
+ pa_assert(rewind_nbytes > 0);
+ pa_log_debug("Requested to rewind %lu bytes.", (unsigned long) rewind_nbytes);
+
+ snd_pcm_hwsync(u->pcm_handle);
+ if ((unused = snd_pcm_avail_update(u->pcm_handle)) < 0) {
+ pa_log("snd_pcm_avail_update() failed: %s", snd_strerror((int) unused));
return -1;
}
+ unused_nbytes = u->tsched_watermark + (size_t) unused * u->frame_size;
+
+ if (u->hwbuf_size > unused_nbytes)
+ limit_nbytes = u->hwbuf_size - unused_nbytes;
+ else
+ limit_nbytes = 0;
+
+ if (rewind_nbytes > limit_nbytes)
+ rewind_nbytes = limit_nbytes;
+
+ if (rewind_nbytes > 0) {
+ snd_pcm_sframes_t in_frames, out_frames;
+
+ pa_log_debug("Limited to %lu bytes.", (unsigned long) rewind_nbytes);
+
+ in_frames = (snd_pcm_sframes_t) (rewind_nbytes / u->frame_size);
+ pa_log_debug("before: %lu", (unsigned long) in_frames);
+ if ((out_frames = snd_pcm_rewind(u->pcm_handle, (snd_pcm_uframes_t) in_frames)) < 0) {
+ pa_log("snd_pcm_rewind() failed: %s", snd_strerror((int) out_frames));
+ return -1;
+ }
+ pa_log_debug("after: %lu", (unsigned long) out_frames);
+
+ rewind_nbytes = (size_t) out_frames * u->frame_size;
+
+ if (rewind_nbytes <= 0)
+ pa_log_info("Tried rewind, but was apparently not possible.");
+ else {
+ u->frame_index -= out_frames;
+ pa_log_debug("Rewound %lu bytes.", (unsigned long) rewind_nbytes);
+ pa_sink_process_rewind(u->sink, rewind_nbytes);
+
+ u->after_rewind = TRUE;
+ return 0;
+ }
+ } else
+ pa_log_debug("Mhmm, actually there is nothing to rewind.");
+
+finish:
+
+ pa_sink_process_rewind(u->sink, 0);
+
return 0;
+
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
+ unsigned short revents = 0;
pa_assert(u);
for (;;) {
int ret;
+/* pa_log_debug("loop"); */
+
/* Render some data and write it to the dsp */
- if (PA_SINK_OPENED(u->sink->thread_info.state)) {
- int work_done = 0;
+ if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
+ int work_done;
+ pa_usec_t sleep_usec = 0;
- if (u->use_mmap) {
- if ((work_done = mmap_write(u)) < 0)
- goto fail;
- } else {
- if ((work_done = unix_write(u)) < 0)
- goto fail;
+ if (u->sink->thread_info.rewind_requested)
+ if (process_rewind(u) < 0)
+ goto fail;
+
+ if (u->use_mmap)
+ work_done = mmap_write(u, &sleep_usec, revents & POLLOUT);
+ else
+ work_done = unix_write(u, &sleep_usec, revents & POLLOUT);
+
+ if (work_done < 0)
+ goto fail;
+
+/* pa_log_debug("work_done = %i", work_done); */
+
+ if (work_done) {
+
+ if (u->first) {
+ pa_log_info("Starting playback.");
+ snd_pcm_start(u->pcm_handle);
+
+ pa_smoother_resume(u->smoother, pa_rtclock_usec());
+ }
+
+ update_smoother(u);
}
- if (work_done && u->first) {
- pa_log_info("Starting playback.");
- snd_pcm_start(u->pcm_handle);
- u->first = FALSE;
- continue;
+ if (u->use_tsched) {
+ pa_usec_t cusec;
+
+ if (u->since_start <= u->hwbuf_size) {
+
+ /* USB devices on ALSA seem to hit a buffer
+ * underrun during the first iterations much
+ * quicker then we calculate here, probably due to
+ * the transport latency. To accomodate for that
+ * we artificially decrease the sleep time until
+ * we have filled the buffer at least once
+ * completely.*/
+
+ /*pa_log_debug("Cutting sleep time for the initial iterations by half.");*/
+ sleep_usec /= 2;
+ }
+
+ /* OK, the playback buffer is now full, let's
+ * calculate when to wake up next */
+/* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
+
+ /* Convert from the sound card time domain to the
+ * system time domain */
+ cusec = pa_smoother_translate(u->smoother, pa_rtclock_usec(), sleep_usec);
+
+/* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
+
+ /* We don't trust the conversion, so we wake up whatever comes first */
+ pa_rtpoll_set_timer_relative(u->rtpoll, PA_MIN(sleep_usec, cusec));
}
- }
+
+ u->first = FALSE;
+ u->after_rewind = FALSE;
+
+ } else if (u->use_tsched)
+
+ /* OK, we're in an invalid state, let's disable our timers */
+ pa_rtpoll_set_timer_disabled(u->rtpoll);
/* Hmm, nothing to do. Let's sleep */
- if ((ret = pa_rtpoll_run(u->rtpoll, 1)) < 0)
+ if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
goto fail;
if (ret == 0)
goto finish;
/* Tell ALSA about this and process its response */
- if (PA_SINK_OPENED(u->sink->thread_info.state)) {
+ if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
struct pollfd *pollfd;
- unsigned short revents = 0;
int err;
unsigned n;
goto fail;
}
- if (revents & (POLLERR|POLLNVAL|POLLHUP)) {
-
- if (revents & POLLERR)
- pa_log_warn("Got POLLERR from ALSA");
- if (revents & POLLNVAL)
- pa_log_warn("Got POLLNVAL from ALSA");
- if (revents & POLLHUP)
- pa_log_warn("Got POLLHUP from ALSA");
-
- /* Try to recover from this error */
-
- switch (snd_pcm_state(u->pcm_handle)) {
-
- case SND_PCM_STATE_XRUN:
- if ((err = snd_pcm_recover(u->pcm_handle, -EPIPE, 1)) != 0) {
- pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP and XRUN: %s", snd_strerror(err));
- goto fail;
- }
- break;
-
- case SND_PCM_STATE_SUSPENDED:
- if ((err = snd_pcm_recover(u->pcm_handle, -ESTRPIPE, 1)) != 0) {
- pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP and SUSPENDED: %s", snd_strerror(err));
- goto fail;
- }
- break;
-
- default:
-
- snd_pcm_drop(u->pcm_handle);
+ if (revents & (POLLIN|POLLERR|POLLNVAL|POLLHUP|POLLPRI)) {
+ if (pa_alsa_recover_from_poll(u->pcm_handle, revents) < 0)
+ goto fail;
- if ((err = snd_pcm_prepare(u->pcm_handle)) < 0) {
- pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP with snd_pcm_prepare(): %s", snd_strerror(err));
- goto fail;
- }
- break;
- }
+ u->first = TRUE;
+ u->since_start = 0;
}
- }
+
+ if (revents && u->use_tsched)
+ pa_log_debug("Wakeup from ALSA!%s%s", (revents & POLLIN) ? " INPUT" : "", (revents & POLLOUT) ? " OUTPUT" : "");
+ } else
+ revents = 0;
}
fail:
const char *dev_id;
pa_sample_spec ss;
pa_channel_map map;
- uint32_t nfrags, frag_size;
- snd_pcm_uframes_t period_size;
+ uint32_t nfrags, hwbuf_size, frag_size, tsched_size, tsched_watermark;
+ snd_pcm_uframes_t period_frames, tsched_frames;
size_t frame_size;
snd_pcm_info_t *pcm_info = NULL;
int err;
- char *t;
const char *name;
char *name_buf = NULL;
- int namereg_fail;
- pa_bool_t use_mmap = TRUE, b;
+ pa_bool_t namereg_fail;
+ pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d;
+ pa_usec_t usec;
+ pa_sink_new_data data;
snd_pcm_info_alloca(&pcm_info);
pa_assert(m);
+ pa_alsa_redirect_errors_inc();
+
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("Failed to parse module arguments");
goto fail;
frame_size = pa_frame_size(&ss);
nfrags = m->core->default_n_fragments;
- frag_size = pa_usec_to_bytes(m->core->default_fragment_size_msec*1000, &ss);
+ frag_size = (uint32_t) pa_usec_to_bytes(m->core->default_fragment_size_msec*PA_USEC_PER_MSEC, &ss);
if (frag_size <= 0)
- frag_size = frame_size;
-
- if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0) {
+ frag_size = (uint32_t) frame_size;
+ tsched_size = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC, &ss);
+ tsched_watermark = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC, &ss);
+
+ if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 ||
+ pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0 ||
+ pa_modargs_get_value_u32(ma, "tsched_buffer_size", &tsched_size) < 0 ||
+ pa_modargs_get_value_u32(ma, "tsched_buffer_watermark", &tsched_watermark) < 0) {
pa_log("Failed to parse buffer metrics");
goto fail;
}
- period_size = frag_size/frame_size;
+
+ hwbuf_size = frag_size * nfrags;
+ period_frames = frag_size/frame_size;
+ tsched_frames = tsched_size/frame_size;
if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
pa_log("Failed to parse mmap argument.");
goto fail;
}
+ if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
+ pa_log("Failed to parse tsched argument.");
+ goto fail;
+ }
+
+ if (use_tsched && !pa_rtclock_hrtimer()) {
+ pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
+ use_tsched = FALSE;
+ }
+
u = pa_xnew0(struct userdata, 1);
u->core = m->core;
u->module = m;
m->userdata = u;
u->use_mmap = use_mmap;
+ u->use_tsched = use_tsched;
u->first = TRUE;
- pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
+ u->since_start = 0;
+ u->after_rewind = FALSE;
u->rtpoll = pa_rtpoll_new();
+ pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
u->alsa_rtpoll_item = NULL;
- pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
+
+ u->smoother = pa_smoother_new(DEFAULT_TSCHED_BUFFER_USEC*2, DEFAULT_TSCHED_BUFFER_USEC*2, TRUE, 5);
+ usec = pa_rtclock_usec();
+ pa_smoother_set_time_offset(u->smoother, usec);
+ pa_smoother_pause(u->smoother, usec);
snd_config_update_free_global();
b = use_mmap;
+ d = use_tsched;
if ((dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
&u->device_name,
&ss, &map,
SND_PCM_STREAM_PLAYBACK,
- &nfrags, &period_size,
- &b)))
+ &nfrags, &period_frames, tsched_frames,
+ &b, &d)))
goto fail;
&u->device_name,
&ss, &map,
SND_PCM_STREAM_PLAYBACK,
- &nfrags, &period_size,
- &b)))
+ &nfrags, &period_frames, tsched_frames,
+ &b, &d)))
goto fail;
}
if (use_mmap && !b) {
pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
- u->use_mmap = use_mmap = b;
+ u->use_mmap = use_mmap = FALSE;
+ }
+
+ if (use_tsched && (!b || !d)) {
+ pa_log_info("Cannot enabled timer-based scheduling, falling back to sound IRQ scheduling.");
+ u->use_tsched = use_tsched = FALSE;
}
if (u->use_mmap)
pa_log_info("Successfully enabled mmap() mode.");
+ if (u->use_tsched)
+ pa_log_info("Successfully enabled timer-based scheduling mode.");
+
if ((err = snd_pcm_info(u->pcm_handle, pcm_info)) < 0) {
pa_log("Error fetching PCM info: %s", snd_strerror(err));
goto fail;
}
- if ((err = pa_alsa_set_sw_params(u->pcm_handle)) < 0) {
- pa_log("Failed to set software parameters: %s", snd_strerror(err));
- goto fail;
- }
-
/* ALSA might tweak the sample spec, so recalculate the frame size */
frame_size = pa_frame_size(&ss);
if (pa_alsa_prepare_mixer(u->mixer_handle, u->device_name) >= 0)
found = TRUE;
else {
- char *md = pa_sprintf_malloc("hw:%s", dev_id);
+ snd_pcm_info_t *info;
+
+ snd_pcm_info_alloca(&info);
+
+ if (snd_pcm_info(u->pcm_handle, info) >= 0) {
+ char *md;
+ int card;
+
+ if ((card = snd_pcm_info_get_card(info)) >= 0) {
- if (strcmp(u->device_name, md))
- if (pa_alsa_prepare_mixer(u->mixer_handle, md) >= 0)
- found = TRUE;
+ md = pa_sprintf_malloc("hw:%i", card);
- pa_xfree(md);
+ if (strcmp(u->device_name, md))
+ if (pa_alsa_prepare_mixer(u->mixer_handle, md) >= 0)
+ found = TRUE;
+ pa_xfree(md);
+ }
+ }
}
if (found)
- if (!(u->mixer_elem = pa_alsa_find_elem(u->mixer_handle, "Master", "PCM")))
+ if (!(u->mixer_elem = pa_alsa_find_elem(u->mixer_handle, "Master", "PCM", TRUE)))
found = FALSE;
if (!found) {
}
if ((name = pa_modargs_get_value(ma, "sink_name", NULL)))
- namereg_fail = 1;
+ namereg_fail = TRUE;
else {
name = name_buf = pa_sprintf_malloc("alsa_output.%s", u->device_name);
- namereg_fail = 0;
+ namereg_fail = FALSE;
}
- u->sink = pa_sink_new(m->core, __FILE__, name, namereg_fail, &ss, &map);
+ pa_sink_new_data_init(&data);
+ data.driver = __FILE__;
+ data.module = m;
+ pa_sink_new_data_set_name(&data, name);
+ data.namereg_fail = namereg_fail;
+ pa_sink_new_data_set_sample_spec(&data, &ss);
+ pa_sink_new_data_set_channel_map(&data, &map);
+
+ pa_alsa_init_proplist(data.proplist, pcm_info);
+ pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
+ pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (period_frames * frame_size * nfrags));
+ pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (period_frames * frame_size));
+ pa_proplist_sets(data.proplist, PA_PROP_DEVICE_ACCESS_MODE, u->use_tsched ? "mmap+timer" : (u->use_mmap ? "mmap" : "serial"));
+
+ u->sink = pa_sink_new(m->core, &data, PA_SINK_HARDWARE|PA_SINK_LATENCY);
+ pa_sink_new_data_done(&data);
pa_xfree(name_buf);
if (!u->sink) {
}
u->sink->parent.process_msg = sink_process_msg;
+ u->sink->update_requested_latency = sink_update_requested_latency_cb;
u->sink->userdata = u;
- pa_sink_set_module(u->sink, m);
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
pa_sink_set_rtpoll(u->sink, u->rtpoll);
- pa_sink_set_description(u->sink, t = pa_sprintf_malloc(
- "ALSA PCM on %s (%s)%s",
- u->device_name,
- snd_pcm_info_get_name(pcm_info),
- use_mmap ? " via DMA" : ""));
- pa_xfree(t);
-
- u->sink->flags = PA_SINK_HARDWARE|PA_SINK_LATENCY;
u->frame_size = frame_size;
- u->fragment_size = frag_size = period_size * frame_size;
+ u->fragment_size = frag_size = (uint32_t) (period_frames * frame_size);
u->nfragments = nfrags;
u->hwbuf_size = u->fragment_size * nfrags;
-
- pa_log_info("Using %u fragments of size %lu bytes.", nfrags, (long unsigned) u->fragment_size);
+ u->hwbuf_unused_frames = 0;
+ u->tsched_watermark = tsched_watermark;
+ u->frame_index = 0;
+ u->hw_dB_supported = FALSE;
+ u->hw_dB_min = u->hw_dB_max = 0;
+ u->hw_volume_min = u->hw_volume_max = 0;
+ u->mixer_seperate_channels = FALSE;
+ pa_cvolume_mute(&u->hardware_volume, u->sink->sample_spec.channels);
+
+ if (use_tsched)
+ fix_tsched_watermark(u);
+
+ u->sink->thread_info.max_rewind = use_tsched ? u->hwbuf_size : 0;
+ u->sink->thread_info.max_request = u->hwbuf_size;
+
+ pa_sink_set_latency_range(u->sink,
+ !use_tsched ? pa_bytes_to_usec(u->hwbuf_size, &ss) : (pa_usec_t) -1,
+ pa_bytes_to_usec(u->hwbuf_size, &ss));
+
+ pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
+ nfrags, (long unsigned) u->fragment_size,
+ (double) pa_bytes_to_usec(u->hwbuf_size, &ss) / PA_USEC_PER_MSEC);
+
+ if (use_tsched)
+ pa_log_info("Time scheduling watermark is %0.2fms",
+ (double) pa_bytes_to_usec(u->tsched_watermark, &ss) / PA_USEC_PER_MSEC);
+
+ if (update_sw_params(u) < 0)
+ goto fail;
pa_memchunk_reset(&u->memchunk);
if (u->mixer_handle) {
pa_assert(u->mixer_elem);
- if (snd_mixer_selem_has_playback_volume(u->mixer_elem))
- if (pa_alsa_calc_mixer_map(u->mixer_elem, &map, u->mixer_map, TRUE) >= 0) {
+ if (snd_mixer_selem_has_playback_volume(u->mixer_elem)) {
+ pa_bool_t suitable = FALSE;
+
+ if (snd_mixer_selem_get_playback_volume_range(u->mixer_elem, &u->hw_volume_min, &u->hw_volume_max) < 0)
+ pa_log_info("Failed to get volume range. Falling back to software volume control.");
+ else if (u->hw_volume_min >= u->hw_volume_max)
+ pa_log_warn("Your kernel driver is broken: it reports a volume range from %li to %li which makes no sense.", u->hw_volume_min, u->hw_volume_max);
+ else {
+ pa_log_info("Volume ranges from %li to %li.", u->hw_volume_min, u->hw_volume_max);
+ suitable = TRUE;
+ }
+
+ if (suitable) {
+ if (snd_mixer_selem_get_playback_dB_range(u->mixer_elem, &u->hw_dB_min, &u->hw_dB_max) < 0)
+ pa_log_info("Mixer doesn't support dB information.");
+ else {
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+ VALGRIND_MAKE_MEM_DEFINED(&u->hw_dB_min, sizeof(u->hw_dB_min));
+ VALGRIND_MAKE_MEM_DEFINED(&u->hw_dB_max, sizeof(u->hw_dB_max));
+#endif
+
+ if (u->hw_dB_min >= u->hw_dB_max)
+ pa_log_warn("Your kernel driver is broken: it reports a volume range from %0.2f dB to %0.2f dB which makes no sense.", (double) u->hw_dB_min/100.0, (double) u->hw_dB_max/100.0);
+ else {
+ pa_log_info("Volume ranges from %0.2f dB to %0.2f dB.", (double) u->hw_dB_min/100.0, (double) u->hw_dB_max/100.0);
+ u->hw_dB_supported = TRUE;
+
+ if (u->hw_dB_max > 0) {
+ u->sink->base_volume = pa_sw_volume_from_dB(- (double) u->hw_dB_max/100.0);
+ pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u->sink->base_volume));
+ } else
+ pa_log_info("No particular base volume set, fixing to 0 dB");
+ }
+ }
+
+ if (!u->hw_dB_supported &&
+ u->hw_volume_max - u->hw_volume_min < 3) {
+
+ pa_log_info("Device doesn't do dB volume and has less than 4 volume levels. Falling back to software volume control.");
+ suitable = FALSE;
+ }
+ }
+
+ if (suitable) {
+ u->mixer_seperate_channels = pa_alsa_calc_mixer_map(u->mixer_elem, &map, u->mixer_map, TRUE) >= 0;
+
u->sink->get_volume = sink_get_volume_cb;
u->sink->set_volume = sink_set_volume_cb;
- snd_mixer_selem_get_playback_volume_range(u->mixer_elem, &u->hw_volume_min, &u->hw_volume_max);
- u->sink->flags |= PA_SINK_HW_VOLUME_CTRL;
- }
+ u->sink->flags |= PA_SINK_HW_VOLUME_CTRL | (u->hw_dB_supported ? PA_SINK_DECIBEL_VOLUME : 0);
+ pa_log_info("Using hardware volume control. Hardware dB scale %s.", u->hw_dB_supported ? "supported" : "not supported");
+
+ } else
+ pa_log_info("Using software volume control.");
+ }
if (snd_mixer_selem_has_playback_switch(u->mixer_elem)) {
u->sink->get_mute = sink_get_mute_cb;
u->sink->set_mute = sink_set_mute_cb;
- u->sink->flags |= PA_SINK_HW_VOLUME_CTRL;
- }
+ u->sink->flags |= PA_SINK_HW_MUTE_CTRL;
+ } else
+ pa_log_info("Using software mute control.");
u->mixer_fdl = pa_alsa_fdlist_new();
} else
u->mixer_fdl = NULL;
+ pa_alsa_dump(u->pcm_handle);
+
if (!(u->thread = pa_thread_new(thread_func, u))) {
pa_log("Failed to create thread.");
goto fail;
}
/* Get initial mixer settings */
- if (u->sink->get_volume)
- u->sink->get_volume(u->sink);
- if (u->sink->get_mute)
- u->sink->get_mute(u->sink);
+ if (data.volume_is_set) {
+ if (u->sink->set_volume)
+ u->sink->set_volume(u->sink);
+ } else {
+ if (u->sink->get_volume)
+ u->sink->get_volume(u->sink);
+ }
+
+ if (data.muted_is_set) {
+ if (u->sink->set_mute)
+ u->sink->set_mute(u->sink);
+ } else {
+ if (u->sink->get_mute)
+ u->sink->get_mute(u->sink);
+ }
pa_sink_put(u->sink);
pa_assert(m);
- if (!(u = m->userdata))
+ if (!(u = m->userdata)) {
+ pa_alsa_redirect_errors_dec();
return;
+ }
if (u->sink)
pa_sink_unlink(u->sink);
snd_pcm_close(u->pcm_handle);
}
+ if (u->smoother)
+ pa_smoother_free(u->smoother);
+
pa_xfree(u->device_name);
pa_xfree(u);
snd_config_update_free_global();
+
+ pa_alsa_redirect_errors_dec();
}