From e205b25d65ccb380fa158711e24d55b6de5d9bc1 Mon Sep 17 00:00:00 2001 From: Pierre Ossman Date: Thu, 16 Feb 2006 19:19:58 +0000 Subject: Reorganised the source tree. We now have src/ with a couple of subdirs: * daemon/ - Contains the files specific to the polypaudio daemon. * modules/ - All loadable modules. * polyp/ - Files that are part of the public, application interface or are only used in libpolyp. * polypcore/ - All other shared files. * tests/ - Test programs. * utils/ - Utility programs. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@487 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/modules/module-oss.c | 468 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 468 insertions(+) create mode 100644 src/modules/module-oss.c (limited to 'src/modules/module-oss.c') diff --git a/src/modules/module-oss.c b/src/modules/module-oss.c new file mode 100644 index 00000000..04458419 --- /dev/null +++ b/src/modules/module-oss.c @@ -0,0 +1,468 @@ +/* $Id$ */ + +/*** + This file is part of polypaudio. + + polypaudio 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. + + polypaudio 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 polypaudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_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 "module-oss-symdef.h" + +PA_MODULE_AUTHOR("Lennart Poettering") +PA_MODULE_DESCRIPTION("OSS Sink/Source") +PA_MODULE_VERSION(PACKAGE_VERSION) +PA_MODULE_USAGE("sink_name= source_name= device= record= playback= format= channels= rate= fragments= fragment_size=") + +struct userdata { + pa_sink *sink; + pa_source *source; + pa_iochannel *io; + pa_core *core; + + pa_memchunk memchunk, silence; + + uint32_t in_fragment_size, out_fragment_size, sample_size; + int use_getospace, use_getispace; + + int fd; + pa_module *module; +}; + +static const char* const valid_modargs[] = { + "sink_name", + "source_name", + "device", + "record", + "playback", + "fragments", + "fragment_size", + "format", + "rate", + "channels", + NULL +}; + +#define DEFAULT_SINK_NAME "oss_output" +#define DEFAULT_SOURCE_NAME "oss_input" +#define DEFAULT_DEVICE "/dev/dsp" + +static void update_usage(struct userdata *u) { + pa_module_set_used(u->module, + (u->sink ? pa_idxset_size(u->sink->inputs) : 0) + + (u->sink ? pa_idxset_size(u->sink->monitor_source->outputs) : 0) + + (u->source ? pa_idxset_size(u->source->outputs) : 0)); +} + +static void do_write(struct userdata *u) { + pa_memchunk *memchunk; + ssize_t r; + size_t l; + int loop = 0; + + assert(u); + + if (!u->sink || !pa_iochannel_is_writable(u->io)) + return; + + update_usage(u); + + l = u->out_fragment_size; + + if (u->use_getospace) { + audio_buf_info info; + + if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) + u->use_getospace = 0; + else { + if (info.bytes/l > 0) { + l = (info.bytes/l)*l; + loop = 1; + } + } + } + + do { + memchunk = &u->memchunk; + + if (!memchunk->length) + if (pa_sink_render(u->sink, l, memchunk) < 0) + memchunk = &u->silence; + + assert(memchunk->memblock); + assert(memchunk->memblock->data); + assert(memchunk->length); + + if ((r = pa_iochannel_write(u->io, (uint8_t*) memchunk->memblock->data + memchunk->index, memchunk->length)) < 0) { + pa_log(__FILE__": write() failed: %s\n", strerror(errno)); + break; + } + + if (memchunk == &u->silence) + assert(r % u->sample_size == 0); + else { + u->memchunk.index += r; + u->memchunk.length -= r; + + if (u->memchunk.length <= 0) { + pa_memblock_unref(u->memchunk.memblock); + u->memchunk.memblock = NULL; + } + } + + l = l > (size_t) r ? l - r : 0; + } while (loop && l > 0); +} + +static void do_read(struct userdata *u) { + pa_memchunk memchunk; + ssize_t r; + size_t l; + int loop = 0; + assert(u); + + if (!u->source || !pa_iochannel_is_readable(u->io) || !pa_idxset_size(u->source->outputs)) + return; + + update_usage(u); + + l = u->in_fragment_size; + + if (u->use_getispace) { + audio_buf_info info; + + if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) + u->use_getispace = 0; + else { + if (info.bytes/l > 0) { + l = (info.bytes/l)*l; + loop = 1; + } + } + } + + do { + memchunk.memblock = pa_memblock_new(l, u->core->memblock_stat); + assert(memchunk.memblock); + if ((r = pa_iochannel_read(u->io, memchunk.memblock->data, memchunk.memblock->length)) < 0) { + pa_memblock_unref(memchunk.memblock); + if (errno != EAGAIN) + pa_log(__FILE__": read() failed: %s\n", strerror(errno)); + break; + } + + assert(r <= (ssize_t) memchunk.memblock->length); + memchunk.length = memchunk.memblock->length = r; + memchunk.index = 0; + + pa_source_post(u->source, &memchunk); + pa_memblock_unref(memchunk.memblock); + + l = l > (size_t) r ? l - r : 0; + } while (loop && l > 0); +} + +static void io_callback(PA_GCC_UNUSED pa_iochannel *io, void*userdata) { + struct userdata *u = userdata; + assert(u); + do_write(u); + do_read(u); +} + +static void source_notify_cb(pa_source *s) { + struct userdata *u = s->userdata; + assert(u); + do_read(u); +} + +static pa_usec_t sink_get_latency_cb(pa_sink *s) { + pa_usec_t r = 0; + int arg; + struct userdata *u = s->userdata; + assert(s && u && u->sink); + + if (ioctl(u->fd, SNDCTL_DSP_GETODELAY, &arg) < 0) { + pa_log_info(__FILE__": device doesn't support SNDCTL_DSP_GETODELAY: %s\n", strerror(errno)); + s->get_latency = NULL; + return 0; + } + + r += pa_bytes_to_usec(arg, &s->sample_spec); + + if (u->memchunk.memblock) + r += pa_bytes_to_usec(u->memchunk.length, &s->sample_spec); + + return r; +} + +static pa_usec_t source_get_latency_cb(pa_source *s) { + struct userdata *u = s->userdata; + audio_buf_info info; + assert(s && u && u->source); + + if (!u->use_getispace) + return 0; + + if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) { + u->use_getispace = 0; + return 0; + } + + if (info.bytes <= 0) + return 0; + + return pa_bytes_to_usec(info.bytes, &s->sample_spec); +} + +static int sink_get_hw_volume(pa_sink *s) { + struct userdata *u = s->userdata; + char cv[PA_CVOLUME_SNPRINT_MAX]; + unsigned vol; + + if (ioctl(u->fd, SOUND_MIXER_READ_PCM, &vol) < 0) { + pa_log_info(__FILE__": device doesn't support reading mixer settings: %s\n", strerror(errno)); + s->get_hw_volume = NULL; + return -1; + } + + s->hw_volume.values[0] = ((vol & 0xFF) * PA_VOLUME_NORM) / 100; + + if ((s->hw_volume.channels = s->sample_spec.channels) >= 2) + s->hw_volume.values[1] = (((vol >> 8) & 0xFF) * PA_VOLUME_NORM) / 100; + + pa_log_info(__FILE__": Read mixer settings: %s\n", pa_cvolume_snprint(cv, sizeof(cv), &s->hw_volume)); + return 0; +} + +static int sink_set_hw_volume(pa_sink *s) { + struct userdata *u = s->userdata; + char cv[PA_CVOLUME_SNPRINT_MAX]; + unsigned vol; + + vol = (s->hw_volume.values[0]*100)/PA_VOLUME_NORM; + + if (s->sample_spec.channels >= 2) + vol |= ((s->hw_volume.values[1]*100)/PA_VOLUME_NORM) << 8; + + if (ioctl(u->fd, SOUND_MIXER_WRITE_PCM, &vol) < 0) { + pa_log_info(__FILE__": device doesn't support writing mixer settings: %s\n", strerror(errno)); + s->set_hw_volume = NULL; + return -1; + } + + pa_log_info(__FILE__": Wrote mixer settings: %s\n", pa_cvolume_snprint(cv, sizeof(cv), &s->hw_volume)); + return 0; +} + +int pa__init(pa_core *c, pa_module*m) { + struct audio_buf_info info; + 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; + pa_sample_spec ss; + pa_modargs *ma = NULL; + assert(c && m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log(__FILE__": failed to parse module arguments.\n"); + goto fail; + } + + if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) { + pa_log(__FILE__": record= and playback= expect numeric argument.\n"); + goto fail; + } + + if (!playback && !record) { + pa_log(__FILE__": neither playback nor record enabled for device.\n"); + goto fail; + } + + mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0)); + + nfrags = 12; + frag_size = 1024; + if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) { + pa_log(__FILE__": failed to parse fragments arguments\n"); + goto fail; + } + + ss = c->default_sample_spec; + if (pa_modargs_get_sample_spec(ma, &ss) < 0) { + pa_log(__FILE__": failed to parse sample specification\n"); + goto fail; + } + + if ((fd = pa_oss_open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, NULL)) < 0) + goto fail; + + pa_log_info(__FILE__": device opened in %s mode.\n", 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(__FILE__": SNDCTL_DSP_GETBLKSIZE: %s\n", strerror(errno)); + goto fail; + } + assert(frag_size); + in_frag_size = out_frag_size = frag_size; + + u = pa_xmalloc(sizeof(struct userdata)); + u->core = c; + u->use_getospace = u->use_getispace = 0; + + if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) { + pa_log_info(__FILE__": input -- %u fragments of size %u.\n", info.fragstotal, info.fragsize); + in_frag_size = info.fragsize; + u->use_getispace = 1; + } + + if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) { + pa_log_info(__FILE__": output -- %u fragments of size %u.\n", info.fragstotal, info.fragsize); + out_frag_size = info.fragsize; + u->use_getospace = 1; + } + + if (mode != O_WRONLY) { + u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, NULL); + assert(u->source); + u->source->userdata = u; + u->source->notify = source_notify_cb; + u->source->get_latency = source_get_latency_cb; + pa_source_set_owner(u->source, m); + u->source->description = pa_sprintf_malloc("Open Sound System PCM on '%s'", p); + } else + u->source = NULL; + + if (mode != O_RDONLY) { + u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, NULL); + assert(u->sink); + u->sink->get_latency = sink_get_latency_cb; + u->sink->get_hw_volume = sink_get_hw_volume; + u->sink->set_hw_volume = sink_set_hw_volume; + u->sink->userdata = u; + pa_sink_set_owner(u->sink, m); + u->sink->description = pa_sprintf_malloc("Open Sound System PCM on '%s'", p); + } else + u->sink = NULL; + + assert(u->source || u->sink); + + u->io = pa_iochannel_new(c->mainloop, u->source ? fd : -1, u->sink ? fd : -1); + assert(u->io); + pa_iochannel_set_callback(u->io, io_callback, u); + u->fd = fd; + + u->memchunk.memblock = NULL; + u->memchunk.length = 0; + u->sample_size = pa_frame_size(&ss); + + u->out_fragment_size = out_frag_size; + u->in_fragment_size = in_frag_size; + u->silence.memblock = pa_memblock_new(u->silence.length = u->out_fragment_size, u->core->memblock_stat); + assert(u->silence.memblock); + pa_silence_memblock(u->silence.memblock, &ss); + u->silence.index = 0; + + u->module = m; + m->userdata = u; + + pa_modargs_free(ma); + + /* + * 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) { + char buf[u->sample_size]; + read(u->fd, buf, u->sample_size); + } + + /* Read mixer settings */ + if (u->sink) + sink_get_hw_volume(u->sink); + + return 0; + +fail: + if (fd >= 0) + close(fd); + + if (ma) + pa_modargs_free(ma); + + return -1; +} + +void pa__done(pa_core *c, pa_module*m) { + struct userdata *u; + assert(c && m); + + if (!(u = m->userdata)) + return; + + if (u->memchunk.memblock) + pa_memblock_unref(u->memchunk.memblock); + if (u->silence.memblock) + pa_memblock_unref(u->silence.memblock); + + if (u->sink) { + pa_sink_disconnect(u->sink); + pa_sink_unref(u->sink); + } + + if (u->source) { + pa_source_disconnect(u->source); + pa_source_unref(u->source); + } + + pa_iochannel_free(u->io); + pa_xfree(u); +} -- cgit