diff options
Diffstat (limited to 'src/modules/module-oss-mmap.c')
-rw-r--r-- | src/modules/module-oss-mmap.c | 637 |
1 files changed, 0 insertions, 637 deletions
diff --git a/src/modules/module-oss-mmap.c b/src/modules/module-oss-mmap.c deleted file mode 100644 index 16c9b311..00000000 --- a/src/modules/module-oss-mmap.c +++ /dev/null @@ -1,637 +0,0 @@ -/* $Id$ */ - -/*** - This file is part of PulseAudio. - - Copyright 2004-2006 Lennart Poettering - Copyright 2006 Pierre Ossman <ossman@cendio.se> 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. -***/ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <sys/soundcard.h> -#include <sys/ioctl.h> -#include <stdlib.h> -#include <sys/stat.h> -#include <stdio.h> -#include <assert.h> -#include <errno.h> -#include <string.h> -#include <fcntl.h> -#include <unistd.h> -#include <limits.h> - -#ifdef HAVE_SYS_MMAN_H -#include <sys/mman.h> -#endif - -#include <pulse/xmalloc.h> -#include <pulse/util.h> - -#include <pulsecore/core-error.h> -#include <pulsecore/iochannel.h> -#include <pulsecore/sink.h> -#include <pulsecore/source.h> -#include <pulsecore/module.h> -#include <pulsecore/sample-util.h> -#include <pulsecore/core-util.h> -#include <pulsecore/modargs.h> -#include <pulsecore/log.h> - -#include "oss-util.h" -#include "module-oss-mmap-symdef.h" - -PA_MODULE_AUTHOR("Lennart Poettering") -PA_MODULE_DESCRIPTION("OSS Sink/Source (mmap)") -PA_MODULE_VERSION(PACKAGE_VERSION) -PA_MODULE_USAGE( - "sink_name=<name for the sink> " - "source_name=<name for the source> " - "device=<OSS device> " - "record=<enable source?> " - "playback=<enable sink?> " - "format=<sample format> " - "channels=<number of channels> " - "rate=<sample rate> " - "fragments=<number of fragments> " - "fragment_size=<fragment size> " - "channel_map=<channel map>") - -struct userdata { - pa_sink *sink; - pa_source *source; - pa_core *core; - pa_sample_spec sample_spec; - - size_t in_fragment_size, out_fragment_size; - unsigned in_fragments, out_fragments; - unsigned out_blocks_saved, in_blocks_saved; - - int fd; - - void *in_mmap, *out_mmap; - size_t in_mmap_length, out_mmap_length; - - pa_io_event *io_event; - - pa_memblock **in_memblocks, **out_memblocks; - unsigned out_current, in_current; - pa_module *module; -}; - -static const char* const valid_modargs[] = { - "sink_name", - "source_name", - "device", - "record", - "playback", - "fragments", - "fragment_size", - "format", - "rate", - "channels", - "channel_map", - NULL -}; - -#define DEFAULT_DEVICE "/dev/dsp" -#define DEFAULT_NFRAGS 12 -#define DEFAULT_FRAGSIZE 1024 - -static void update_usage(struct userdata *u) { - pa_module_set_used(u->module, - (u->sink ? pa_sink_used_by(u->sink) : 0) + - (u->source ? pa_source_used_by(u->source) : 0)); -} - -static void clear_up(struct userdata *u) { - assert(u); - - if (u->sink) { - pa_sink_disconnect(u->sink); - pa_sink_unref(u->sink); - u->sink = NULL; - } - - if (u->source) { - pa_source_disconnect(u->source); - pa_source_unref(u->source); - u->source = NULL; - } - - if (u->in_mmap && u->in_mmap != MAP_FAILED) { - munmap(u->in_mmap, u->in_mmap_length); - u->in_mmap = NULL; - } - - if (u->out_mmap && u->out_mmap != MAP_FAILED) { - munmap(u->out_mmap, u->out_mmap_length); - u->out_mmap = NULL; - } - - if (u->io_event) { - u->core->mainloop->io_free(u->io_event); - u->io_event = NULL; - } - - if (u->fd >= 0) { - close(u->fd); - u->fd = -1; - } -} - -static void out_fill_memblocks(struct userdata *u, unsigned n) { - assert(u && u->out_memblocks); - - while (n > 0) { - pa_memchunk chunk; - - if (u->out_memblocks[u->out_current]) - pa_memblock_unref_fixed(u->out_memblocks[u->out_current]); - - chunk.memblock = u->out_memblocks[u->out_current] = - pa_memblock_new_fixed( - u->core->mempool, - (uint8_t*) u->out_mmap+u->out_fragment_size*u->out_current, - u->out_fragment_size, - 1); - assert(chunk.memblock); - chunk.length = chunk.memblock->length; - chunk.index = 0; - - pa_sink_render_into_full(u->sink, &chunk); - - u->out_current++; - while (u->out_current >= u->out_fragments) - u->out_current -= u->out_fragments; - - n--; - } -} - -static void do_write(struct userdata *u) { - struct count_info info; - assert(u && u->sink); - - update_usage(u); - - if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) { - pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno)); - - clear_up(u); - pa_module_unload_request(u->module); - return; - } - - info.blocks += u->out_blocks_saved; - u->out_blocks_saved = 0; - - if (!info.blocks) - return; - - out_fill_memblocks(u, info.blocks); -} - -static void in_post_memblocks(struct userdata *u, unsigned n) { - assert(u && u->in_memblocks); - - while (n > 0) { - pa_memchunk chunk; - - if (!u->in_memblocks[u->in_current]) { - chunk.memblock = u->in_memblocks[u->in_current] = pa_memblock_new_fixed(u->core->mempool, (uint8_t*) u->in_mmap+u->in_fragment_size*u->in_current, u->in_fragment_size, 1); - chunk.length = chunk.memblock->length; - chunk.index = 0; - - pa_source_post(u->source, &chunk); - } - - u->in_current++; - while (u->in_current >= u->in_fragments) - u->in_current -= u->in_fragments; - - n--; - } -} - -static void in_clear_memblocks(struct userdata*u, unsigned n) { - unsigned i = u->in_current; - assert(u && u->in_memblocks); - - if (n > u->in_fragments) - n = u->in_fragments; - - while (n > 0) { - if (u->in_memblocks[i]) { - pa_memblock_unref_fixed(u->in_memblocks[i]); - u->in_memblocks[i] = NULL; - } - - i++; - while (i >= u->in_fragments) - i -= u->in_fragments; - - n--; - } -} - -static void do_read(struct userdata *u) { - struct count_info info; - assert(u && u->source); - - update_usage(u); - - if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) { - pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno)); - - clear_up(u); - pa_module_unload_request(u->module); - return; - } - - info.blocks += u->in_blocks_saved; - u->in_blocks_saved = 0; - - if (!info.blocks) - return; - - in_post_memblocks(u, info.blocks); - in_clear_memblocks(u, u->in_fragments/2); -} - -static void io_callback(pa_mainloop_api *m, pa_io_event *e, PA_GCC_UNUSED int fd, pa_io_event_flags_t f, void *userdata) { - struct userdata *u = userdata; - assert (u && u->core->mainloop == m && u->io_event == e); - - if (f & PA_IO_EVENT_ERROR) { - clear_up(u); - pa_module_unload_request(u->module); - return; - } - - if (f & PA_IO_EVENT_INPUT) - do_read(u); - if (f & PA_IO_EVENT_OUTPUT) - do_write(u); -} - -static pa_usec_t sink_get_latency_cb(pa_sink *s) { - struct userdata *u = s->userdata; - struct count_info info; - size_t bpos, n, total; - assert(s && u); - - if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) { - pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno)); - return 0; - } - - u->out_blocks_saved += info.blocks; - - total = u->out_fragments * u->out_fragment_size; - bpos = ((u->out_current + u->out_blocks_saved) * u->out_fragment_size) % total; - - if (bpos <= (size_t) info.ptr) - n = total - (info.ptr - bpos); - else - n = bpos - info.ptr; - -/* pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->out_fragment_size, u->out_fragments); */ - - return pa_bytes_to_usec(n, &s->sample_spec); -} - -static pa_usec_t source_get_latency_cb(pa_source *s) { - struct userdata *u = s->userdata; - struct count_info info; - size_t bpos, n, total; - assert(s && u); - - if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) { - pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno)); - return 0; - } - - u->in_blocks_saved += info.blocks; - - total = u->in_fragments * u->in_fragment_size; - bpos = ((u->in_current + u->in_blocks_saved) * u->in_fragment_size) % total; - - if (bpos <= (size_t) info.ptr) - n = info.ptr - bpos; - else - n = (u->in_fragments * u->in_fragment_size) - bpos + info.ptr; - -/* pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->in_fragment_size, u->in_fragments); */ - - return pa_bytes_to_usec(n, &s->sample_spec); -} - -static int sink_get_hw_volume(pa_sink *s) { - struct userdata *u = s->userdata; - - if (pa_oss_get_pcm_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) { - pa_log_info("device doesn't support reading mixer settings: %s", pa_cstrerror(errno)); - s->get_hw_volume = NULL; - return -1; - } - - return 0; -} - -static int sink_set_hw_volume(pa_sink *s) { - struct userdata *u = s->userdata; - - if (pa_oss_set_pcm_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) { - pa_log_info("device doesn't support writing mixer settings: %s", pa_cstrerror(errno)); - s->set_hw_volume = NULL; - return -1; - } - - return 0; -} - -static int source_get_hw_volume(pa_source *s) { - struct userdata *u = s->userdata; - - if (pa_oss_get_input_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) { - pa_log_info("device doesn't support reading mixer settings: %s", pa_cstrerror(errno)); - s->get_hw_volume = NULL; - return -1; - } - - return 0; -} - -static int source_set_hw_volume(pa_source *s) { - struct userdata *u = s->userdata; - - if (pa_oss_set_input_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) { - pa_log_info("device doesn't support writing mixer settings: %s", pa_cstrerror(errno)); - s->set_hw_volume = NULL; - return -1; - } - - return 0; -} - -int pa__init(pa_core *c, pa_module*m) { - struct audio_buf_info info; - struct userdata *u = NULL; - const char *p; - int nfrags, frag_size; - int mode, caps; - int enable_bits = 0, zero = 0; - int playback = 1, record = 1; - pa_modargs *ma = NULL; - char hwdesc[64], *t; - pa_channel_map map; - const char *name; - char *name_buf = NULL; - int namereg_fail; - - assert(c); - assert(m); - - m->userdata = u = pa_xnew0(struct userdata, 1); - u->module = m; - u->fd = -1; - u->core = c; - - 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 numeric arguments."); - 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)); - - nfrags = DEFAULT_NFRAGS; - frag_size = DEFAULT_FRAGSIZE; - 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; - } - - u->sample_spec = c->default_sample_spec; - if (pa_modargs_get_sample_spec_and_channel_map(ma, &u->sample_spec, &map, PA_CHANNEL_MAP_OSS) < 0) { - pa_log("failed to parse sample specification or channel map"); - goto fail; - } - - if ((u->fd = pa_oss_open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, &caps)) < 0) - goto fail; - - if (!(caps & DSP_CAP_MMAP) || !(caps & DSP_CAP_TRIGGER)) { - pa_log("OSS device not mmap capable."); - goto fail; - } - - pa_log_info("device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR")); - - if (pa_oss_get_hw_description(p, hwdesc, sizeof(hwdesc)) >= 0) - pa_log_info("hardware name is '%s'.", hwdesc); - else - hwdesc[0] = 0; - - if (nfrags >= 2 && frag_size >= 1) - if (pa_oss_set_fragments(u->fd, nfrags, frag_size) < 0) - goto fail; - - if (pa_oss_auto_format(u->fd, &u->sample_spec) < 0) - goto fail; - - if (mode != O_WRONLY) { - if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) { - pa_log("SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno)); - goto fail; - } - - pa_log_info("input -- %u fragments of size %u.", info.fragstotal, info.fragsize); - u->in_mmap_length = (u->in_fragment_size = info.fragsize) * (u->in_fragments = info.fragstotal); - - if ((u->in_mmap = mmap(NULL, u->in_mmap_length, PROT_READ, MAP_SHARED, u->fd, 0)) == MAP_FAILED) { - if (mode == O_RDWR) { - pa_log("mmap failed for input. Changing to O_WRONLY mode."); - mode = O_WRONLY; - } else { - pa_log("mmap(): %s", pa_cstrerror(errno)); - goto fail; - } - } else { - if ((name = pa_modargs_get_value(ma, "source_name", NULL))) - namereg_fail = 1; - else { - name = name_buf = pa_sprintf_malloc("oss_input.%s", pa_path_get_filename(p)); - namereg_fail = 0; - } - - if (!(u->source = pa_source_new(c, __FILE__, name, namereg_fail, &u->sample_spec, &map))) - goto fail; - - u->source->userdata = u; - u->source->get_latency = source_get_latency_cb; - u->source->get_hw_volume = source_get_hw_volume; - u->source->set_hw_volume = source_set_hw_volume; - pa_source_set_owner(u->source, m); - pa_source_set_description(u->source, t = pa_sprintf_malloc("OSS PCM/mmap() on %s%s%s%s", - p, - hwdesc[0] ? " (" : "", - hwdesc[0] ? hwdesc : "", - hwdesc[0] ? ")" : "")); - pa_xfree(t); - u->source->is_hardware = 1; - - u->in_memblocks = pa_xnew0(pa_memblock*, u->in_fragments); - - enable_bits |= PCM_ENABLE_INPUT; - } - } - - pa_xfree(name_buf); - name_buf = NULL; - - if (mode != O_RDONLY) { - if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) { - pa_log("SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno)); - goto fail; - } - - pa_log_info("output -- %u fragments of size %u.", info.fragstotal, info.fragsize); - u->out_mmap_length = (u->out_fragment_size = info.fragsize) * (u->out_fragments = info.fragstotal); - - if ((u->out_mmap = mmap(NULL, u->out_mmap_length, PROT_WRITE, MAP_SHARED, u->fd, 0)) == MAP_FAILED) { - if (mode == O_RDWR) { - pa_log("mmap filed for output. Changing to O_RDONLY mode."); - mode = O_RDONLY; - } else { - pa_log("mmap(): %s", pa_cstrerror(errno)); - goto fail; - } - } else { - pa_silence_memory(u->out_mmap, u->out_mmap_length, &u->sample_spec); - - if ((name = pa_modargs_get_value(ma, "sink_name", NULL))) - namereg_fail = 1; - else { - name = name_buf = pa_sprintf_malloc("oss_output.%s", pa_path_get_filename(p)); - namereg_fail = 0; - } - - if (!(u->sink = pa_sink_new(c, __FILE__, name, namereg_fail, &u->sample_spec, &map))) - goto fail; - - 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); - pa_sink_set_description(u->sink, t = pa_sprintf_malloc("OSS PCM/mmap() on %s%s%s%s", - p, - hwdesc[0] ? " (" : "", - hwdesc[0] ? hwdesc : "", - hwdesc[0] ? ")" : "")); - pa_xfree(t); - - u->sink->is_hardware = 1; - u->out_memblocks = pa_xmalloc0(sizeof(struct memblock *)*u->out_fragments); - - enable_bits |= PCM_ENABLE_OUTPUT; - } - } - - pa_xfree(name_buf); - name_buf = NULL; - - zero = 0; - if (ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &zero) < 0) { - pa_log("SNDCTL_DSP_SETTRIGGER: %s", pa_cstrerror(errno)); - goto fail; - } - - if (ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &enable_bits) < 0) { - pa_log("SNDCTL_DSP_SETTRIGGER: %s", pa_cstrerror(errno)); - goto fail; - } - - assert(u->source || u->sink); - - u->io_event = c->mainloop->io_new(c->mainloop, u->fd, (u->source ? PA_IO_EVENT_INPUT : 0) | (u->sink ? PA_IO_EVENT_OUTPUT : 0), io_callback, u); - assert(u->io_event); - - pa_modargs_free(ma); - - /* Read mixer settings */ - if (u->source) - source_get_hw_volume(u->source); - if (u->sink) - sink_get_hw_volume(u->sink); - - return 0; - -fail: - pa__done(c, m); - - if (ma) - pa_modargs_free(ma); - - pa_xfree(name_buf); - - return -1; -} - -void pa__done(pa_core *c, pa_module*m) { - struct userdata *u; - - assert(c); - assert(m); - - if (!(u = m->userdata)) - return; - - clear_up(u); - - if (u->out_memblocks) { - unsigned i; - for (i = 0; i < u->out_fragments; i++) - if (u->out_memblocks[i]) - pa_memblock_unref_fixed(u->out_memblocks[i]); - pa_xfree(u->out_memblocks); - } - - if (u->in_memblocks) { - unsigned i; - for (i = 0; i < u->in_fragments; i++) - if (u->in_memblocks[i]) - pa_memblock_unref_fixed(u->in_memblocks[i]); - pa_xfree(u->in_memblocks); - } - - pa_xfree(u); -} |