From c7fff97782bb59815e7ebd38895cc1480719e24c Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Thu, 15 Jan 2009 21:02:01 +0100 Subject: move alsa and oss modules into their own subdirectories --- src/modules/oss/module-oss.c | 1536 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1536 insertions(+) create mode 100644 src/modules/oss/module-oss.c (limited to 'src/modules/oss/module-oss.c') diff --git a/src/modules/oss/module-oss.c b/src/modules/oss/module-oss.c new file mode 100644 index 00000000..23a32549 --- /dev/null +++ b/src/modules/oss/module-oss.c @@ -0,0 +1,1536 @@ +/*** + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + Copyright 2006 Pierre Ossman for Cendio AB + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2 of the License, + or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with PulseAudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +/* General power management rules: + * + * When SUSPENDED we close the audio device. + * + * We make no difference between IDLE and RUNNING in our handling. + * + * As long as we are in RUNNING/IDLE state we will *always* write data to + * the device. If none is avilable from the inputs, we write silence + * instead. + * + * If power should be saved on IDLE module-suspend-on-idle should be used. + * + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#ifdef HAVE_SYS_MMAN_H +#include +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "oss-util.h" +#include "module-oss-symdef.h" + +PA_MODULE_AUTHOR("Lennart Poettering"); +PA_MODULE_DESCRIPTION("OSS Sink/Source"); +PA_MODULE_VERSION(PACKAGE_VERSION); +PA_MODULE_LOAD_ONCE(FALSE); +PA_MODULE_USAGE( + "sink_name= " + "source_name= " + "device= " + "record= " + "playback= " + "format= " + "channels= " + "rate= " + "fragments= " + "fragment_size= " + "channel_map= " + "mmap="); + +#define DEFAULT_DEVICE "/dev/dsp" + +struct userdata { + pa_core *core; + pa_module *module; + pa_sink *sink; + pa_source *source; + + pa_thread *thread; + pa_thread_mq thread_mq; + pa_rtpoll *rtpoll; + + char *device_name; + + pa_memchunk memchunk; + + size_t frame_size; + uint32_t in_fragment_size, out_fragment_size, in_nfrags, out_nfrags, in_hwbuf_size, out_hwbuf_size; + pa_bool_t use_getospace, use_getispace; + pa_bool_t use_getodelay; + + pa_bool_t sink_suspended, source_suspended; + + int fd; + int mode; + + int mixer_fd; + int mixer_devmask; + + int nfrags, frag_size; + + pa_bool_t 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; + + pa_rtpoll_item *rtpoll_item; +}; + +static const char* const valid_modargs[] = { + "sink_name", + "source_name", + "device", + "record", + "playback", + "fragments", + "fragment_size", + "format", + "rate", + "channels", + "channel_map", + "mmap", + NULL +}; + +static void trigger(struct userdata *u, pa_bool_t quick) { + int enable_bits = 0, zero = 0; + + pa_assert(u); + + if (u->fd < 0) + return; + + pa_log_debug("trigger"); + + if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) + enable_bits |= PCM_ENABLE_INPUT; + + if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state)) + enable_bits |= PCM_ENABLE_OUTPUT; + + pa_log_debug("trigger: %i", enable_bits); + + + if (u->use_mmap) { + + if (!quick) + 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 && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) { + 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); + +/* pa_log("Mmmap writing %u blocks", n); */ + + 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); + +/* pa_log("Mmmap writing..."); */ + + 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, (unsigned) info.blocks); + + return info.blocks; +} + +static void mmap_post_memblocks(struct userdata *u, unsigned n) { + pa_assert(u); + pa_assert(u->in_mmap_memblocks); + +/* pa_log("Mmmap reading %u blocks", n); */ + + 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); + +/* pa_log("Mmmap reading..."); */ + + if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) { + pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno)); + return -1; + } + +/* pa_log("... %i", info.blocks); */ + + info.blocks += u->in_mmap_saved_nfrags; + u->in_mmap_saved_nfrags = 0; + + if (info.blocks > 0) { + mmap_post_memblocks(u, (unsigned) 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 + (unsigned) u->out_mmap_saved_nfrags) * u->out_fragment_size) % u->out_hwbuf_size; + + if (bpos <= (size_t) info.ptr) + n = u->out_hwbuf_size - ((size_t) info.ptr - bpos); + else + n = bpos - (size_t) 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 + (unsigned) u->in_mmap_saved_nfrags) * u->in_fragment_size) % u->in_hwbuf_size; + + if (bpos <= (size_t) info.ptr) + n = (size_t) info.ptr - bpos; + else + n = u->in_hwbuf_size - bpos + (size_t) 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((size_t) 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((size_t) 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((size_t) info.bytes, &u->source->sample_spec); + } + + return r; +} + +static void build_pollfd(struct userdata *u) { + struct pollfd *pollfd; + + pa_assert(u); + pa_assert(u->fd >= 0); + + if (u->rtpoll_item) + pa_rtpoll_item_free(u->rtpoll_item); + + u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1); + pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL); + pollfd->fd = u->fd; + pollfd->events = 0; + pollfd->revents = 0; +} + +static int suspend(struct userdata *u) { + pa_assert(u); + pa_assert(u->fd >= 0); + + pa_log_info("Suspending..."); + + 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); + pa_close(u->fd); + u->fd = -1; + + if (u->rtpoll_item) { + pa_rtpoll_item_free(u->rtpoll_item); + u->rtpoll_item = NULL; + } + + pa_log_info("Device suspended..."); + + return 0; +} + +static int sink_get_volume(pa_sink *s); +static int source_get_volume(pa_source *s); + +static int unsuspend(struct userdata *u) { + 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); + pa_assert(u->fd < 0); + + m = u->mode; + + pa_log_info("Trying resume..."); + + if ((u->fd = pa_oss_open(u->device_name, &m, NULL)) < 0) { + pa_log_warn("Resume failed, device busy (%s)", pa_cstrerror(errno)); + return -1; + } + + if (m != u->mode) { + pa_log_warn("Resume failed, couldn't open device with original access mode."); + goto fail; + } + + if (u->nfrags >= 2 && u->frag_size >= 1) + if (pa_oss_set_fragments(u->fd, u->nfrags, u->frag_size) < 0) { + pa_log_warn("Resume failed, couldn't set original fragment settings."); + goto fail; + } + + ss = *(ss_original = u->sink ? &u->sink->sample_spec : &u->source->sample_spec); + if (pa_oss_auto_format(u->fd, &ss) < 0 || !pa_sample_spec_equal(&ss, ss_original)) { + pa_log_warn("Resume failed, couldn't set original sample format settings."); + goto fail; + } + + if (ioctl(u->fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) { + pa_log_warn("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno)); + goto fail; + } + + in_frag_size = out_frag_size = frag_size; + in_nfrags = out_nfrags = u->nfrags; + + 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) { + out_frag_size = info.fragsize; + out_nfrags = info.fragstotal; + } + + 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; + } + + 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; + + pa_assert(!u->rtpoll_item); + + build_pollfd(u); + + if (u->sink) + sink_get_volume(u->sink); + if (u->source) + source_get_volume(u->source); + + pa_log_info("Resumed successfully..."); + + return 0; + +fail: + pa_close(u->fd); + u->fd = -1; + return -1; +} + +static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) { + struct userdata *u = PA_SINK(o)->userdata; + int ret; + pa_bool_t do_trigger = FALSE, quick = TRUE; + + switch (code) { + + case PA_SINK_MESSAGE_GET_LATENCY: { + pa_usec_t r = 0; + + if (u->fd >= 0) { + if (u->use_mmap) + r = mmap_sink_get_latency(u); + else + r = io_sink_get_latency(u); + } + + *((pa_usec_t*) data) = r; + + return 0; + } + + case PA_SINK_MESSAGE_SET_STATE: + + switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) { + + case PA_SINK_SUSPENDED: + pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state)); + + if (!u->source || u->source_suspended) { + if (suspend(u) < 0) + return -1; + } + + do_trigger = TRUE; + + u->sink_suspended = TRUE; + break; + + case PA_SINK_IDLE: + case PA_SINK_RUNNING: + + if (u->sink->thread_info.state == PA_SINK_INIT) { + do_trigger = TRUE; + quick = u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state); + } + + if (u->sink->thread_info.state == PA_SINK_SUSPENDED) { + + if (!u->source || u->source_suspended) { + if (unsuspend(u) < 0) + return -1; + quick = FALSE; + } + + do_trigger = TRUE; + + u->out_mmap_current = 0; + u->out_mmap_saved_nfrags = 0; + + u->sink_suspended = FALSE; + } + + break; + + case PA_SINK_UNLINKED: + case PA_SINK_INIT: + ; + } + + break; + + } + + ret = pa_sink_process_msg(o, code, data, offset, chunk); + + if (do_trigger) + trigger(u, quick); + + return ret; +} + +static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) { + struct userdata *u = PA_SOURCE(o)->userdata; + int ret; + int do_trigger = FALSE, quick = TRUE; + + switch (code) { + + case PA_SOURCE_MESSAGE_GET_LATENCY: { + pa_usec_t r = 0; + + 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; + return 0; + } + + case PA_SOURCE_MESSAGE_SET_STATE: + + switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) { + case PA_SOURCE_SUSPENDED: + pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state)); + + if (!u->sink || u->sink_suspended) { + if (suspend(u) < 0) + return -1; + } + + do_trigger = TRUE; + + u->source_suspended = TRUE; + break; + + case PA_SOURCE_IDLE: + case PA_SOURCE_RUNNING: + + if (u->source->thread_info.state == PA_SOURCE_INIT) { + do_trigger = TRUE; + quick = u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state); + } + + if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) { + + if (!u->sink || u->sink_suspended) { + if (unsuspend(u) < 0) + return -1; + quick = FALSE; + } + + do_trigger = TRUE; + + u->in_mmap_current = 0; + u->in_mmap_saved_nfrags = 0; + + u->source_suspended = FALSE; + } + break; + + case PA_SOURCE_UNLINKED: + case PA_SOURCE_INIT: + ; + + } + break; + + } + + ret = pa_source_process_msg(o, code, data, offset, chunk); + + if (do_trigger) + trigger(u, quick); + + return ret; +} + +static int sink_get_volume(pa_sink *s) { + struct userdata *u; + int r; + + pa_assert_se(u = s->userdata); + + pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM)); + + if (u->mixer_devmask & SOUND_MASK_VOLUME) + if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_VOLUME, &s->sample_spec, &s->volume)) >= 0) + return r; + + if (u->mixer_devmask & SOUND_MASK_PCM) + if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_PCM, &s->sample_spec, &s->volume)) >= 0) + return r; + + pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno)); + return -1; +} + +static int sink_set_volume(pa_sink *s) { + struct userdata *u; + int r; + + pa_assert_se(u = s->userdata); + + pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM)); + + if (u->mixer_devmask & SOUND_MASK_VOLUME) + if ((r = pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_VOLUME, &s->sample_spec, &s->volume)) >= 0) + return r; + + if (u->mixer_devmask & SOUND_MASK_PCM) + if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_PCM, &s->sample_spec, &s->volume)) >= 0) + return r; + + pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno)); + return -1; +} + +static int source_get_volume(pa_source *s) { + struct userdata *u; + int r; + + pa_assert_se(u = s->userdata); + + pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV)); + + if (u->mixer_devmask & SOUND_MASK_IGAIN) + if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_IGAIN, &s->sample_spec, &s->volume)) >= 0) + return r; + + if (u->mixer_devmask & SOUND_MASK_RECLEV) + if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_RECLEV, &s->sample_spec, &s->volume)) >= 0) + return r; + + pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno)); + return -1; +} + +static int source_set_volume(pa_source *s) { + struct userdata *u; + int r; + + pa_assert_se(u = s->userdata); + + pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV)); + + if (u->mixer_devmask & SOUND_MASK_IGAIN) + if ((r = pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_IGAIN, &s->sample_spec, &s->volume)) >= 0) + return r; + + if (u->mixer_devmask & SOUND_MASK_RECLEV) + if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_RECLEV, &s->sample_spec, &s->volume)) >= 0) + return r; + + pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno)); + return -1; +} + +static void thread_func(void *userdata) { + struct userdata *u = userdata; + int write_type = 0, read_type = 0; + short revents = 0; + + pa_assert(u); + + pa_log_debug("Thread starting up"); + + if (u->core->realtime_scheduling) + pa_make_realtime(u->core->realtime_priority); + + pa_thread_mq_install(&u->thread_mq); + pa_rtpoll_install(u->rtpoll); + + for (;;) { + int ret; + +/* pa_log("loop"); */ + + if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) + if (u->sink->thread_info.rewind_requested) + pa_sink_process_rewind(u->sink, 0); + + /* Render some data and write it to the dsp */ + + if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state) && ((revents & POLLOUT) || u->use_mmap || u->use_getospace)) { + + if (u->use_mmap) { + + if ((ret = mmap_write(u)) < 0) + goto fail; + + revents &= ~POLLOUT; + + if (ret > 0) + continue; + + } else { + ssize_t l; + pa_bool_t loop = FALSE, work_done = FALSE; + + l = (ssize_t) 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 = FALSE; + } else { + l = info.bytes; + + /* We loop only if GETOSPACE worked and we + * actually *know* that we can write more than + * one fragment at a time */ + loop = TRUE; + } + } + + /* Round down to multiples of the fragment size, + * because OSS needs that (at least some versions + * do) */ + l = (l/(ssize_t) u->out_fragment_size) * (ssize_t) u->out_fragment_size; + + /* Hmm, so poll() signalled us that we can read + * something, but GETOSPACE told us there was nothing? + * Hmm, make the best of it, try to read some data, to + * avoid spinning forever. */ + if (l <= 0 && (revents & POLLOUT)) { + l = (ssize_t) u->out_fragment_size; + loop = FALSE; + } + + while (l > 0) { + void *p; + ssize_t t; + + if (u->memchunk.length <= 0) + pa_sink_render(u->sink, (size_t) 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"); + + revents &= ~POLLOUT; + break; + + } else { + pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno)); + goto fail; + } + + } else { + + u->memchunk.index += (size_t) t; + u->memchunk.length -= (size_t) t; + + if (u->memchunk.length <= 0) { + pa_memblock_unref(u->memchunk.memblock); + pa_memchunk_reset(&u->memchunk); + } + + l -= t; + + revents &= ~POLLOUT; + work_done = TRUE; + } + + if (!loop) + break; + } + + if (work_done) + continue; + } + } + + /* Try to read some data and pass it on to the source driver. */ + + if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state) && ((revents & POLLIN) || u->use_mmap || u->use_getispace)) { + + if (u->use_mmap) { + + if ((ret = mmap_read(u)) < 0) + goto fail; + + revents &= ~POLLIN; + + if (ret > 0) + continue; + + } else { + + void *p; + ssize_t l; + pa_memchunk memchunk; + pa_bool_t loop = FALSE, work_done = FALSE; + + l = (ssize_t) u->in_fragment_size; + + 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 = FALSE; + } else { + l = info.bytes; + loop = TRUE; + } + } + + l = (l/(ssize_t) u->in_fragment_size) * (ssize_t) u->in_fragment_size; + + if (l <= 0 && (revents & POLLIN)) { + l = (ssize_t) u->in_fragment_size; + loop = FALSE; + } + + while (l > 0) { + ssize_t t; + size_t k; + + pa_assert(l > 0); + + memchunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1); + + k = pa_memblock_get_length(memchunk.memblock); + + if (k > (size_t) l) + k = (size_t) l; + + k = (k/u->frame_size)*u->frame_size; + + p = pa_memblock_acquire(memchunk.memblock); + t = pa_read(u->fd, p, k, &read_type); + pa_memblock_release(memchunk.memblock); + + pa_assert(t != 0); /* EOF cannot happen */ + +/* pa_log("read %i bytes of %u", t, l); */ + + if (t < 0) { + pa_memblock_unref(memchunk.memblock); + + if (errno == EINTR) + continue; + + else if (errno == EAGAIN) { + pa_log_debug("EAGAIN"); + + revents &= ~POLLIN; + break; + + } else { + pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno)); + goto fail; + } + + } else { + memchunk.index = 0; + memchunk.length = (size_t) t; + + pa_source_post(u->source, &memchunk); + pa_memblock_unref(memchunk.memblock); + + l -= t; + + revents &= ~POLLIN; + work_done = TRUE; + } + + if (!loop) + break; + } + + if (work_done) + continue; + } + } + +/* pa_log("loop2 revents=%i", revents); */ + + if (u->rtpoll_item) { + struct pollfd *pollfd; + + pa_assert(u->fd >= 0); + + pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL); + pollfd->events = (short) + (((u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) ? POLLIN : 0) | + ((u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state)) ? POLLOUT : 0)); + } + + /* Hmm, nothing to do. Let's sleep */ + if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) + goto fail; + + if (ret == 0) + goto finish; + + if (u->rtpoll_item) { + struct pollfd *pollfd; + + pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL); + + if (pollfd->revents & ~(POLLOUT|POLLIN)) { + pa_log("DSP shutdown."); + goto fail; + } + + revents = pollfd->revents; + } else + revents = 0; + } + +fail: + /* If this was no regular exit from the loop we have to continue + * processing messages until we received PA_MESSAGE_SHUTDOWN */ + pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL); + pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN); + +finish: + pa_log_debug("Thread shutting down"); +} + +int pa__init(pa_module*m) { + + struct audio_buf_info info; + struct userdata *u = NULL; + const char *dev; + int fd = -1; + int nfrags, frag_size; + int mode, caps; + pa_bool_t record = TRUE, playback = TRUE, use_mmap = TRUE; + pa_sample_spec ss; + pa_channel_map map; + pa_modargs *ma = NULL; + char hwdesc[64]; + const char *name; + pa_bool_t namereg_fail; + pa_sink_new_data sink_new_data; + pa_source_new_data source_new_data; + + pa_assert(m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log("Failed to parse module arguments."); + goto fail; + } + + if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) { + pa_log("record= and playback= expect boolean argument."); + goto fail; + } + + if (!playback && !record) { + pa_log("Neither playback nor record enabled for device."); + goto fail; + } + + mode = (playback && record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0)); + + ss = m->core->default_sample_spec; + if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_OSS) < 0) { + pa_log("Failed to parse sample specification or channel map"); + goto fail; + } + + nfrags = (int) m->core->default_n_fragments; + frag_size = (int) pa_usec_to_bytes(m->core->default_fragment_size_msec*1000, &ss); + if (frag_size <= 0) + frag_size = (int) 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 (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) { + pa_log("Failed to parse mmap argument."); + goto fail; + } + + if ((fd = pa_oss_open(dev = 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_info("OSS device not mmap capable, falling back to UNIX read/write mode."); + use_mmap = 0; + } + + if (use_mmap && mode == O_WRONLY) { + pa_log_info("Device opened for playback only, cannot do memory mapping, falling back to UNIX write() mode."); + use_mmap = 0; + } + + if (pa_oss_get_hw_description(dev, hwdesc, sizeof(hwdesc)) >= 0) + pa_log_info("Hardware name is '%s'.", hwdesc); + else + hwdesc[0] = 0; + + pa_log_info("Device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR")); + + if (nfrags >= 2 && frag_size >= 1) + if (pa_oss_set_fragments(fd, nfrags, frag_size) < 0) + goto fail; + + if (pa_oss_auto_format(fd, &ss) < 0) + goto fail; + + if (ioctl(fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) { + pa_log("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno)); + goto fail; + } + pa_assert(frag_size > 0); + + u = pa_xnew0(struct userdata, 1); + u->core = m->core; + u->module = m; + m->userdata = u; + u->fd = fd; + u->mixer_fd = -1; + u->use_getospace = u->use_getispace = TRUE; + u->use_getodelay = TRUE; + u->mode = mode; + u->frame_size = pa_frame_size(&ss); + u->device_name = pa_xstrdup(dev); + u->in_nfrags = u->out_nfrags = (uint32_t) (u->nfrags = nfrags); + u->out_fragment_size = u->in_fragment_size = (uint32_t) (u->frag_size = frag_size); + u->use_mmap = use_mmap; + u->rtpoll = pa_rtpoll_new(); + pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll); + u->rtpoll_item = NULL; + build_pollfd(u); + + if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) { + pa_log_info("Input -- %u fragments of size %u.", info.fragstotal, info.fragsize); + u->in_fragment_size = (uint32_t) info.fragsize; + u->in_nfrags = (uint32_t) info.fragstotal; + u->use_getispace = TRUE; + } + + if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) { + pa_log_info("Output -- %u fragments of size %u.", info.fragstotal, info.fragsize); + u->out_fragment_size = (uint32_t) info.fragsize; + u->out_nfrags = (uint32_t) info.fragstotal; + u->use_getospace = TRUE; + } + + 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) { + pa_log_warn("mmap(PROT_READ) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno)); + use_mmap = u->use_mmap = FALSE; + u->in_mmap = NULL; + } else + pa_log_debug("Successfully mmap()ed input buffer."); + } + + if ((name = pa_modargs_get_value(ma, "source_name", NULL))) + namereg_fail = TRUE; + else { + name = name_buf = pa_sprintf_malloc("oss_input.%s", pa_path_get_filename(dev)); + namereg_fail = FALSE; + } + + pa_source_new_data_init(&source_new_data); + source_new_data.driver = __FILE__; + source_new_data.module = m; + pa_source_new_data_set_name(&source_new_data, name); + source_new_data.namereg_fail = namereg_fail; + pa_source_new_data_set_sample_spec(&source_new_data, &ss); + pa_source_new_data_set_channel_map(&source_new_data, &map); + pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_STRING, dev); + pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_API, "oss"); + pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev); + pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial"); + pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->in_hwbuf_size)); + pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->in_fragment_size)); + + u->source = pa_source_new(m->core, &source_new_data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY); + pa_source_new_data_done(&source_new_data); + pa_xfree(name_buf); + + if (!u->source) { + pa_log("Failed to create source object"); + goto fail; + } + + u->source->parent.process_msg = source_process_msg; + u->source->userdata = u; + + pa_source_set_asyncmsgq(u->source, u->thread_mq.inq); + pa_source_set_rtpoll(u->source, u->rtpoll); + u->source->refresh_volume = TRUE; + + if (use_mmap) + u->in_mmap_memblocks = pa_xnew0(pa_memblock*, u->in_nfrags); + } + + 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_warn("mmap(PROT_WRITE) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno)); + u->use_mmap = use_mmap = FALSE; + u->out_mmap = NULL; + } + } else { + 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 = TRUE; + else { + name = name_buf = pa_sprintf_malloc("oss_output.%s", pa_path_get_filename(dev)); + namereg_fail = FALSE; + } + + pa_sink_new_data_init(&sink_new_data); + sink_new_data.driver = __FILE__; + sink_new_data.module = m; + pa_sink_new_data_set_name(&sink_new_data, name); + sink_new_data.namereg_fail = namereg_fail; + pa_sink_new_data_set_sample_spec(&sink_new_data, &ss); + pa_sink_new_data_set_channel_map(&sink_new_data, &map); + pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_STRING, dev); + pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_API, "oss"); + pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev); + pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial"); + pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->out_hwbuf_size)); + pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->out_fragment_size)); + + u->sink = pa_sink_new(m->core, &sink_new_data, PA_SINK_HARDWARE|PA_SINK_LATENCY); + pa_sink_new_data_done(&sink_new_data); + pa_xfree(name_buf); + + if (!u->sink) { + pa_log("Failed to create sink object"); + goto fail; + } + + u->sink->parent.process_msg = sink_process_msg; + u->sink->userdata = u; + + pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq); + pa_sink_set_rtpoll(u->sink, u->rtpoll); + u->sink->refresh_volume = TRUE; + + u->sink->thread_info.max_request = u->out_hwbuf_size; + + if (use_mmap) + u->out_mmap_memblocks = pa_xnew0(pa_memblock*, u->out_nfrags); + } + + if ((u->mixer_fd = pa_oss_open_mixer_for_device(u->device_name)) >= 0) { + pa_bool_t do_close = TRUE; + u->mixer_devmask = 0; + + if (ioctl(fd, SOUND_MIXER_READ_DEVMASK, &u->mixer_devmask) < 0) + pa_log_warn("SOUND_MIXER_READ_DEVMASK failed: %s", pa_cstrerror(errno)); + + else { + if (u->sink && (u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM))) { + pa_log_debug("Found hardware mixer track for playback."); + u->sink->flags |= PA_SINK_HW_VOLUME_CTRL; + u->sink->get_volume = sink_get_volume; + u->sink->set_volume = sink_set_volume; + do_close = FALSE; + } + + if (u->source && (u->mixer_devmask & (SOUND_MASK_RECLEV|SOUND_MASK_IGAIN))) { + pa_log_debug("Found hardware mixer track for recording."); + u->source->flags |= PA_SOURCE_HW_VOLUME_CTRL; + u->source->get_volume = source_get_volume; + u->source->set_volume = source_set_volume; + do_close = FALSE; + } + } + + if (do_close) { + pa_close(u->mixer_fd); + u->mixer_fd = -1; + } + } + +go_on: + + pa_assert(u->source || u->sink); + + pa_memchunk_reset(&u->memchunk); + + if (!(u->thread = pa_thread_new(thread_func, u))) { + pa_log("Failed to create thread."); + goto fail; + } + + /* Read mixer settings */ + if (u->sink) { + if (sink_new_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 (u->source) { + if (source_new_data.volume_is_set) { + if (u->source->set_volume) + u->source->set_volume(u->source); + } else { + if (u->source->get_volume) + u->source->get_volume(u->source); + } + } + + if (u->sink) + pa_sink_put(u->sink); + if (u->source) + pa_source_put(u->source); + + pa_modargs_free(ma); + + return 0; + +fail: + + if (u) + pa__done(m); + else if (fd >= 0) + pa_close(fd); + + if (ma) + pa_modargs_free(ma); + + return -1; +} + +void pa__done(pa_module*m) { + struct userdata *u; + + pa_assert(m); + + if (!(u = m->userdata)) + return; + + if (u->sink) + pa_sink_unlink(u->sink); + + if (u->source) + pa_source_unlink(u->source); + + if (u->thread) { + pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL); + pa_thread_free(u->thread); + } + + pa_thread_mq_done(&u->thread_mq); + + if (u->sink) + pa_sink_unref(u->sink); + + if (u->source) + pa_source_unref(u->source); + + if (u->memchunk.memblock) + pa_memblock_unref(u->memchunk.memblock); + + if (u->rtpoll_item) + pa_rtpoll_item_free(u->rtpoll_item); + + if (u->rtpoll) + pa_rtpoll_free(u->rtpoll); + + 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); + } + + 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) + pa_close(u->fd); + + if (u->mixer_fd >= 0) + pa_close(u->mixer_fd); + + pa_xfree(u->device_name); + + pa_xfree(u); +} -- cgit