From 41f6aea8fdbc744c13bc461056a2d694a5c4d06f Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Sat, 17 Jul 2004 14:12:30 +0000 Subject: rename src to polyp git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@90 fefdeb5f-60dc-0310-8127-8f9354f1896f --- polyp/module-oss.c | 304 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 304 insertions(+) create mode 100644 polyp/module-oss.c (limited to 'polyp/module-oss.c') diff --git a/polyp/module-oss.c b/polyp/module-oss.c new file mode 100644 index 00000000..d727534a --- /dev/null +++ b/polyp/module-oss.c @@ -0,0 +1,304 @@ +/* $Id$ */ + +/*** + This file is part of polypaudio. + + polypaudio is free software; you can redistribute it and/or modify + it under the terms of the GNU 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 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 "iochannel.h" +#include "sink.h" +#include "source.h" +#include "module.h" +#include "oss-util.h" +#include "sample-util.h" +#include "util.h" +#include "modargs.h" + +struct userdata { + struct pa_sink *sink; + struct pa_source *source; + struct pa_iochannel *io; + struct pa_core *core; + + struct pa_memchunk memchunk, silence; + + uint32_t in_fragment_size, out_fragment_size, sample_size; + + int fd; +}; + +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 do_write(struct userdata *u) { + struct pa_memchunk *memchunk; + ssize_t r; + assert(u); + + if (!u->sink || !pa_iochannel_is_writable(u->io)) + return; + + if (!u->memchunk.length) { + if (pa_sink_render(u->sink, u->out_fragment_size, &u->memchunk) < 0) + memchunk = &u->silence; + else + memchunk = &u->memchunk; + } + + assert(memchunk->memblock && memchunk->length); + + if ((r = pa_iochannel_write(u->io, memchunk->memblock->data + memchunk->index, memchunk->length)) < 0) { + fprintf(stderr, "write() failed: %s\n", strerror(errno)); + return; + } + + 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; + } + } +} + +static void do_read(struct userdata *u) { + struct pa_memchunk memchunk; + ssize_t r; + assert(u); + + if (!u->source || !pa_iochannel_is_readable(u->io)) + return; + + memchunk.memblock = pa_memblock_new(u->in_fragment_size); + 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) + fprintf(stderr, "read() failed: %s\n", strerror(errno)); + return; + } + + 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); +}; + +static void io_callback(struct pa_iochannel *io, void*userdata) { + struct userdata *u = userdata; + assert(u); + do_write(u); + do_read(u); +} + +static uint32_t sink_get_latency_cb(struct pa_sink *s) { + int arg; + struct userdata *u = s->userdata; + assert(s && u && u->sink); + + if (ioctl(u->fd, SNDCTL_DSP_GETODELAY, &arg) < 0) { + fprintf(stderr, "module-oss: device doesn't support SNDCTL_DSP_GETODELAY.\n"); + s->get_latency = NULL; + return 0; + } + + return pa_samples_usec(arg, &s->sample_spec); +} + +int pa_module_init(struct pa_core *c, struct 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; + uint32_t record = 1, playback = 1; + struct pa_sample_spec ss; + struct pa_modargs *ma = NULL; + assert(c && m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + fprintf(stderr, __FILE__": failed to parse module arguments.\n"); + goto fail; + } + + if (pa_modargs_get_value_u32(ma, "record", &record) < 0 || pa_modargs_get_value_u32(ma, "playback", &playback) < 0) { + fprintf(stderr, __FILE__": record= and playback= expect numeric argument.\n"); + goto fail; + } + + mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0)); + if (mode == 0) { + fprintf(stderr, __FILE__": neither playback nor record enabled for device.\n"); + goto fail; + } + + nfrags = 12; + frag_size = 1024; + if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 || nfrags < 2 || pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0 || frag_size < 1) { + fprintf(stderr, __FILE__": failed to parse fragments arguments\n"); + goto fail; + } + + ss = c->default_sample_spec; + if (pa_modargs_get_sample_spec(ma, &ss) < 0) { + fprintf(stderr, __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; + + fprintf(stderr, "module-oss: device opened in %s mode.\n", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR")); + + 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) { + fprintf(stderr, "SNDCTL_DSP_GETBLKSIZE: %s\n", strerror(errno)); + goto fail; + } + assert(frag_size); + in_frag_size = out_frag_size = frag_size; + + if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) { + fprintf(stderr, "module-oss: input -- %u fragments of size %u.\n", info.fragstotal, info.fragsize); + in_frag_size = info.fragsize; + } + + if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) { + fprintf(stderr, "module-oss: output -- %u fragments of size %u.\n", info.fragstotal, info.fragsize); + out_frag_size = info.fragsize; + } + + u = malloc(sizeof(struct userdata)); + assert(u); + + u->core = c; + + if (mode != O_WRONLY) { + u->source = pa_source_new(c, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss); + assert(u->source); + u->source->userdata = u; + 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, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss); + assert(u->sink); + u->sink->get_latency = sink_get_latency_cb; + 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 : 0); + 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_sample_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); + assert(u->silence.memblock); + pa_silence_memblock(u->silence.memblock, &ss); + u->silence.index = 0; + + m->userdata = u; + + pa_modargs_free(ma); + + return 0; + +fail: + if (fd >= 0) + close(fd); + + if (ma) + pa_modargs_free(ma); + + return -1; +} + +void pa_module_done(struct pa_core *c, struct pa_module*m) { + struct userdata *u; + assert(c && m); + + u = m->userdata; + assert(u); + + 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_free(u->sink); + if (u->source) + pa_source_free(u->source); + pa_iochannel_free(u->io); + free(u); +} -- cgit