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-detect.c | 227 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 227 insertions(+) create mode 100644 src/modules/module-detect.c (limited to 'src/modules/module-detect.c') diff --git a/src/modules/module-detect.c b/src/modules/module-detect.c new file mode 100644 index 00000000..e325b22c --- /dev/null +++ b/src/modules/module-detect.c @@ -0,0 +1,227 @@ +/* $Id$ */ + +/*** + 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 "module-detect-symdef.h" + +PA_MODULE_AUTHOR("Lennart Poettering") +PA_MODULE_DESCRIPTION("Detect available audio hardware and load matching drivers") +PA_MODULE_VERSION(PACKAGE_VERSION) +PA_MODULE_USAGE("just-one=") + +static const char *endswith(const char *haystack, const char *needle) { + size_t l, m; + const char *p; + + if ((l = strlen(haystack)) < (m = strlen(needle))) + return NULL; + + if (strcmp(p = haystack + l - m, needle)) + return NULL; + + return p; +} + +#ifdef HAVE_ALSA +static int detect_alsa(pa_core *c, int just_one) { + FILE *f; + int n = 0, n_sink = 0, n_source = 0; + + if (!(f = fopen("/proc/asound/devices", "r"))) { + + if (errno != ENOENT) + pa_log_error(__FILE__": open(\"/proc/asound/devices\") failed: %s\n", strerror(errno)); + + return -1; + } + + while (!feof(f)) { + char line[64], args[64]; + unsigned device, subdevice; + int is_sink; + + if (!fgets(line, sizeof(line), f)) + break; + + line[strcspn(line, "\r\n")] = 0; + + if (endswith(line, "digital audio playback")) + is_sink = 1; + else if (endswith(line, "digital audio capture")) + is_sink = 0; + else + continue; + + if (just_one && is_sink && n_sink >= 1) + continue; + + if (just_one && !is_sink && n_source >= 1) + continue; + + if (sscanf(line, " %*i: [%u- %u]: ", &device, &subdevice) != 2) + continue; + + /* Only one sink per device */ + if (subdevice != 0) + continue; + + snprintf(args, sizeof(args), "device=hw:%u,0", device); + if (!pa_module_load(c, is_sink ? "module-alsa-sink" : "module-alsa-source", args)) + continue; + + n++; + + if (is_sink) + n_sink++; + else + n_source++; + } + + fclose(f); + + return n; +} +#endif + +#ifdef HAVE_OSS +static int detect_oss(pa_core *c, int just_one) { + FILE *f; + int n = 0, b = 0; + + if (!(f = fopen("/dev/sndstat", "r")) && + !(f = fopen("/proc/sndstat", "r")) && + !(f = fopen("/proc/asound/oss/sndstat", "r"))) { + + if (errno != ENOENT) + pa_log_error(__FILE__": failed to open OSS sndstat device: %s\n", strerror(errno)); + + return -1; + } + + while (!feof(f)) { + char line[64], args[64]; + unsigned device; + + if (!fgets(line, sizeof(line), f)) + break; + + line[strcspn(line, "\r\n")] = 0; + + if (!b) { + b = strcmp(line, "Audio devices:") == 0; + continue; + } + + if (line[0] == 0) + break; + + if (sscanf(line, "%u: ", &device) != 1) + continue; + + if (device == 0) + snprintf(args, sizeof(args), "device=/dev/dsp"); + else + snprintf(args, sizeof(args), "device=/dev/dsp%u", device); + + if (!pa_module_load(c, "module-oss", args)) + continue; + + n++; + + if (just_one) + break; + } + + fclose(f); + return n; +} +#endif + +int pa__init(pa_core *c, pa_module*m) { + int just_one = 0, n = 0; + pa_modargs *ma; + + static const char* const valid_modargs[] = { + "just-one", + NULL + }; + + assert(c); + assert(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, "just-one", &just_one) < 0) { + pa_log(__FILE__": just_one= expects a boolean argument.\n"); + goto fail; + } + +#if HAVE_ALSA + if ((n = detect_alsa(c, just_one)) <= 0) +#endif +#if HAVE_OSS + if ((n = detect_oss(c, just_one)) <= 0) +#endif + { + pa_log_warn(__FILE__": failed to detect any sound hardware.\n"); + goto fail; + } + + pa_log_info(__FILE__": loaded %i modules.\n", n); + + /* We were successful and can unload ourselves now. */ + pa_module_unload_request(m); + + pa_modargs_free(ma); + + return 0; + +fail: + if (ma) + pa_modargs_free(ma); + + return -1; +} + + +void pa__done(pa_core *c, pa_module*m) { + /* NOP */ +} + -- cgit