diff options
Diffstat (limited to '')
| -rw-r--r-- | src/utils/padsp.c | 2747 |
1 files changed, 2747 insertions, 0 deletions
diff --git a/src/utils/padsp.c b/src/utils/padsp.c new file mode 100644 index 0000000..a53b161 --- /dev/null +++ b/src/utils/padsp.c @@ -0,0 +1,2747 @@ +/*** + This file is part of PulseAudio. + + Copyright 2006 Lennart Poettering + Copyright 2006-2007 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 2.1 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, see <http://www.gnu.org/licenses/>. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#ifdef _FILE_OFFSET_BITS +#undef _FILE_OFFSET_BITS +#endif + +#ifndef _LARGEFILE64_SOURCE +#define _LARGEFILE64_SOURCE 1 +#endif + +#include <sys/soundcard.h> +#include <sys/ioctl.h> +#include <pthread.h> +#include <unistd.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <dlfcn.h> +#include <errno.h> +#include <fcntl.h> +#include <string.h> +#include <stdarg.h> +#include <stdio.h> +#include <signal.h> + +#ifdef __linux__ +#include <linux/sockios.h> +#endif + +#include <pulse/pulseaudio.h> +#include <pulse/gccmacro.h> +#include <pulsecore/llist.h> +#include <pulsecore/core-util.h> +#include <pulsecore/sample-util.h> + +/* On some systems SIOCINQ isn't defined, but FIONREAD is just an alias */ +#if !defined(SIOCINQ) && defined(FIONREAD) +# define SIOCINQ FIONREAD +#endif + +/* make sure gcc doesn't redefine open and friends as macros */ +#undef open +#undef open64 + +typedef enum { + FD_INFO_MIXER, + FD_INFO_STREAM, +} fd_info_type_t; + +typedef struct fd_info fd_info; + +struct fd_info { + pthread_mutex_t mutex; + int ref; + int unusable; + + fd_info_type_t type; + int app_fd, thread_fd; + + pa_sample_spec sample_spec; + size_t fragment_size; + unsigned n_fragments; + + pa_threaded_mainloop *mainloop; + pa_context *context; + pa_stream *play_stream; + pa_stream *rec_stream; + int play_precork; + int rec_precork; + + pa_io_event *io_event; + pa_io_event_flags_t io_flags; + + void *buf; + size_t leftover; + size_t rec_offset; + + int operation_success; + + pa_cvolume sink_volume, source_volume; + uint32_t sink_index, source_index; + int volume_modify_count; + + int optr_n_blocks; + + PA_LLIST_FIELDS(fd_info); +}; + +static int dsp_drain(fd_info *i); +static void fd_info_remove_from_list(fd_info *i); + +static pthread_mutex_t fd_infos_mutex = PTHREAD_MUTEX_INITIALIZER; +static pthread_mutex_t func_mutex = PTHREAD_MUTEX_INITIALIZER; + +static PA_LLIST_HEAD(fd_info, fd_infos) = NULL; + +static int (*_ioctl)(int, int, void*) = NULL; +static int (*_close)(int) = NULL; +static int (*_open)(const char *, int, mode_t) = NULL; +static int (*___open_2)(const char *, int) = NULL; +static FILE* (*_fopen)(const char *path, const char *mode) = NULL; +static int (*_stat)(const char *, struct stat *) = NULL; +#ifdef _STAT_VER +static int (*___xstat)(int, const char *, struct stat *) = NULL; +#endif +#ifdef HAVE_OPEN64 +static int (*_open64)(const char *, int, mode_t) = NULL; +static int (*___open64_2)(const char *, int) = NULL; +static FILE* (*_fopen64)(const char *path, const char *mode) = NULL; +static int (*_stat64)(const char *, struct stat64 *) = NULL; +#ifdef _STAT_VER +static int (*___xstat64)(int, const char *, struct stat64 *) = NULL; +#endif +#endif +static int (*_fclose)(FILE *f) = NULL; +static int (*_access)(const char *, int) = NULL; + +/* dlsym() violates ISO C, so confide the breakage into this function to + * avoid warnings. */ +typedef void (*fnptr)(void); +static inline fnptr dlsym_fn(void *handle, const char *symbol) { + return (fnptr) (long) dlsym(handle, symbol); +} + +#define LOAD_IOCTL_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_ioctl) \ + _ioctl = (int (*)(int, int, void*)) dlsym_fn(RTLD_NEXT, "ioctl"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_OPEN_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_open) \ + _open = (int (*)(const char *, int, mode_t)) dlsym_fn(RTLD_NEXT, "open"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD___OPEN_2_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!___open_2) \ + ___open_2 = (int (*)(const char *, int)) dlsym_fn(RTLD_NEXT, "__open_2"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_OPEN64_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_open64) \ + _open64 = (int (*)(const char *, int, mode_t)) dlsym_fn(RTLD_NEXT, "open64"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD___OPEN64_2_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!___open64_2) \ + ___open64_2 = (int (*)(const char *, int)) dlsym_fn(RTLD_NEXT, "__open64_2"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_CLOSE_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_close) \ + _close = (int (*)(int)) dlsym_fn(RTLD_NEXT, "close"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_ACCESS_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_access) \ + _access = (int (*)(const char*, int)) dlsym_fn(RTLD_NEXT, "access"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_STAT_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_stat) \ + _stat = (int (*)(const char *, struct stat *)) dlsym_fn(RTLD_NEXT, "stat"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_STAT64_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_stat64) \ + _stat64 = (int (*)(const char *, struct stat64 *)) dlsym_fn(RTLD_NEXT, "stat64"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_XSTAT_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!___xstat) \ + ___xstat = (int (*)(int, const char *, struct stat *)) dlsym_fn(RTLD_NEXT, "__xstat"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_XSTAT64_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!___xstat64) \ + ___xstat64 = (int (*)(int, const char *, struct stat64 *)) dlsym_fn(RTLD_NEXT, "__xstat64"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_FOPEN_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_fopen) \ + _fopen = (FILE* (*)(const char *, const char*)) dlsym_fn(RTLD_NEXT, "fopen"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_FOPEN64_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_fopen64) \ + _fopen64 = (FILE* (*)(const char *, const char*)) dlsym_fn(RTLD_NEXT, "fopen64"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_FCLOSE_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_fclose) \ + _fclose = (int (*)(FILE *)) dlsym_fn(RTLD_NEXT, "fclose"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define CONTEXT_CHECK_DEAD_GOTO(i, label) do { \ +if (!(i)->context || pa_context_get_state((i)->context) != PA_CONTEXT_READY) { \ + debug(DEBUG_LEVEL_NORMAL, __FILE__": Not connected: %s\n", (i)->context ? pa_strerror(pa_context_errno((i)->context)) : "NULL"); \ + goto label; \ +} \ +} while(0) + +#define PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, label) do { \ +if (!(i)->context || pa_context_get_state((i)->context) != PA_CONTEXT_READY || \ + !(i)->play_stream || pa_stream_get_state((i)->play_stream) != PA_STREAM_READY) { \ + debug(DEBUG_LEVEL_NORMAL, __FILE__": Not connected: %s\n", (i)->context ? pa_strerror(pa_context_errno((i)->context)) : "NULL"); \ + goto label; \ +} \ +} while(0) + +#define RECORD_STREAM_CHECK_DEAD_GOTO(i, label) do { \ +if (!(i)->context || pa_context_get_state((i)->context) != PA_CONTEXT_READY || \ + !(i)->rec_stream || pa_stream_get_state((i)->rec_stream) != PA_STREAM_READY) { \ + debug(DEBUG_LEVEL_NORMAL, __FILE__": Not connected: %s\n", (i)->context ? pa_strerror(pa_context_errno((i)->context)) : "NULL"); \ + goto label; \ +} \ +} while(0) + +static void debug(int level, const char *format, ...) PA_GCC_PRINTF_ATTR(2,3); + +#define DEBUG_LEVEL_ALWAYS 0 +#define DEBUG_LEVEL_NORMAL 1 +#define DEBUG_LEVEL_VERBOSE 2 + +static void debug(int level, const char *format, ...) { + va_list ap; + const char *dlevel_s; + int dlevel; + + dlevel_s = getenv("PADSP_DEBUG"); + if (!dlevel_s) + return; + + dlevel = atoi(dlevel_s); + + if (dlevel < level) + return; + + va_start(ap, format); + vfprintf(stderr, format, ap); + va_end(ap); +} + +static int padsp_disabled(void) { + static int *sym; + static int sym_resolved = 0; + + /* If the current process has a symbol __padsp_disabled__ we use + * it to detect whether we should enable our stuff or not. A + * program needs to be compiled with -rdynamic for this to work! + * The symbol must be an int containing a three bit bitmask: bit 1 + * -> disable /dev/dsp emulation, bit 2 -> disable /dev/sndstat + * emulation, bit 3 -> disable /dev/mixer emulation. Hence a value + * of 7 disables padsp entirely. */ + + pthread_mutex_lock(&func_mutex); + if (!sym_resolved) { + sym = (int*) dlsym(RTLD_DEFAULT, "__padsp_disabled__"); + sym_resolved = 1; + } + pthread_mutex_unlock(&func_mutex); + + if (!sym) + return 0; + + return *sym; +} + +static int dsp_cloak_enable(void) { + if (padsp_disabled() & 1) + return 0; + + if (getenv("PADSP_NO_DSP") || getenv("PULSE_INTERNAL")) + return 0; + + return 1; +} + +static int sndstat_cloak_enable(void) { + if (padsp_disabled() & 2) + return 0; + + if (getenv("PADSP_NO_SNDSTAT") || getenv("PULSE_INTERNAL")) + return 0; + + return 1; +} + +static int mixer_cloak_enable(void) { + if (padsp_disabled() & 4) + return 0; + + if (getenv("PADSP_NO_MIXER") || getenv("PULSE_INTERNAL")) + return 0; + + return 1; +} +static pthread_key_t recursion_key; + +static void recursion_key_alloc(void) { + pthread_key_create(&recursion_key, NULL); +} + +static int function_enter(void) { + /* Avoid recursive calls */ + static pthread_once_t recursion_key_once = PTHREAD_ONCE_INIT; + pthread_once(&recursion_key_once, recursion_key_alloc); + + if (pthread_getspecific(recursion_key)) + return 0; + + pthread_setspecific(recursion_key, (void*) 1); + return 1; +} + +static void function_exit(void) { + pthread_setspecific(recursion_key, NULL); +} + +static void fd_info_free(fd_info *i) { + assert(i); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": freeing fd info (fd=%i)\n", i->app_fd); + + dsp_drain(i); + + if (i->mainloop) + pa_threaded_mainloop_stop(i->mainloop); + + if (i->play_stream) { + pa_stream_disconnect(i->play_stream); + pa_stream_unref(i->play_stream); + } + + if (i->rec_stream) { + pa_stream_disconnect(i->rec_stream); + pa_stream_unref(i->rec_stream); + } + + if (i->context) { + pa_context_disconnect(i->context); + pa_context_unref(i->context); + } + + if (i->mainloop) + pa_threaded_mainloop_free(i->mainloop); + + if (i->app_fd >= 0) { + LOAD_CLOSE_FUNC(); + _close(i->app_fd); + } + + if (i->thread_fd >= 0) { + LOAD_CLOSE_FUNC(); + _close(i->thread_fd); + } + + free(i->buf); + + pthread_mutex_destroy(&i->mutex); + free(i); +} + +static fd_info *fd_info_ref(fd_info *i) { + assert(i); + + pthread_mutex_lock(&i->mutex); + assert(i->ref >= 1); + i->ref++; + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": ref++, now %i\n", i->ref); + pthread_mutex_unlock(&i->mutex); + + return i; +} + +static void fd_info_unref(fd_info *i) { + int r; + pthread_mutex_lock(&i->mutex); + assert(i->ref >= 1); + r = --i->ref; + debug(DEBUG_LEVEL_VERBOSE, __FILE__": ref--, now %i\n", i->ref); + pthread_mutex_unlock(&i->mutex); + + if (r <= 0) + fd_info_free(i); +} + +static void context_state_cb(pa_context *c, void *userdata) { + fd_info *i = userdata; + assert(c); + + switch (pa_context_get_state(c)) { + case PA_CONTEXT_READY: + case PA_CONTEXT_TERMINATED: + case PA_CONTEXT_FAILED: + pa_threaded_mainloop_signal(i->mainloop, 0); + break; + + case PA_CONTEXT_UNCONNECTED: + case PA_CONTEXT_CONNECTING: + case PA_CONTEXT_AUTHORIZING: + case PA_CONTEXT_SETTING_NAME: + break; + } +} + +static void reset_params(fd_info *i) { + assert(i); + + i->sample_spec.format = PA_SAMPLE_U8; + i->sample_spec.channels = 1; + i->sample_spec.rate = 8000; + i->fragment_size = 0; + i->n_fragments = 0; +} + +static const char *client_name(char *buf, size_t n) { + char *p; + const char *e; + + if ((e = getenv("PADSP_CLIENT_NAME"))) + return e; + + if ((p = pa_get_binary_name_malloc())) { + snprintf(buf, n, "OSS Emulation[%s]", p); + pa_xfree(p); + } else + snprintf(buf, n, "OSS"); + + return buf; +} + +static const char *stream_name(void) { + const char *e; + + if ((e = getenv("PADSP_STREAM_NAME"))) + return e; + + return "Audio Stream"; +} + +static void atfork_prepare(void) { + fd_info *i; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_prepare() enter\n"); + + function_enter(); + + pthread_mutex_lock(&fd_infos_mutex); + + for (i = fd_infos; i; i = i->next) { + pthread_mutex_lock(&i->mutex); + pa_threaded_mainloop_lock(i->mainloop); + } + + pthread_mutex_lock(&func_mutex); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_prepare() exit\n"); +} + +static void atfork_parent(void) { + fd_info *i; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_parent() enter\n"); + + pthread_mutex_unlock(&func_mutex); + + for (i = fd_infos; i; i = i->next) { + pa_threaded_mainloop_unlock(i->mainloop); + pthread_mutex_unlock(&i->mutex); + } + + pthread_mutex_unlock(&fd_infos_mutex); + + function_exit(); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_parent() exit\n"); +} + +static void atfork_child(void) { + fd_info *i; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_child() enter\n"); + + /* We do only the bare minimum to get all fds closed */ + pthread_mutex_init(&func_mutex, NULL); + pthread_mutex_init(&fd_infos_mutex, NULL); + + for (i = fd_infos; i; i = i->next) { + pthread_mutex_init(&i->mutex, NULL); + + if (i->context) { + pa_context_disconnect(i->context); + pa_context_unref(i->context); + i->context = NULL; + } + + if (i->play_stream) { + pa_stream_unref(i->play_stream); + i->play_stream = NULL; + } + + if (i->rec_stream) { + pa_stream_unref(i->rec_stream); + i->rec_stream = NULL; + } + + if (i->app_fd >= 0) { + LOAD_CLOSE_FUNC(); + _close(i->app_fd); + i->app_fd = -1; + } + + if (i->thread_fd >= 0) { + LOAD_CLOSE_FUNC(); + _close(i->thread_fd); + i->thread_fd = -1; + } + + i->unusable = 1; + } + + function_exit(); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_child() exit\n"); +} + +static void install_atfork(void) { + pthread_atfork(atfork_prepare, atfork_parent, atfork_child); +} + +static void stream_success_cb(pa_stream *s, int success, void *userdata) { + fd_info *i = userdata; + + assert(s); + assert(i); + + i->operation_success = success; + pa_threaded_mainloop_signal(i->mainloop, 0); +} + +static void context_success_cb(pa_context *c, int success, void *userdata) { + fd_info *i = userdata; + + assert(c); + assert(i); + + i->operation_success = success; + pa_threaded_mainloop_signal(i->mainloop, 0); +} + +static fd_info* fd_info_new(fd_info_type_t type, int *_errno) { + fd_info *i; + int sfds[2] = { -1, -1 }; + char name[64]; + static pthread_once_t install_atfork_once = PTHREAD_ONCE_INIT; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": fd_info_new()\n"); + + signal(SIGPIPE, SIG_IGN); /* Yes, ugly as hell */ + + pthread_once(&install_atfork_once, install_atfork); + + if (!(i = malloc(sizeof(fd_info)))) { + *_errno = ENOMEM; + goto fail; + } + + i->app_fd = i->thread_fd = -1; + i->type = type; + + i->mainloop = NULL; + i->context = NULL; + i->play_stream = NULL; + i->rec_stream = NULL; + i->play_precork = 0; + i->rec_precork = 0; + i->io_event = NULL; + i->io_flags = 0; + pthread_mutex_init(&i->mutex, NULL); + i->ref = 1; + i->buf = NULL; + i->leftover = 0; + i->rec_offset = 0; + i->unusable = 0; + pa_cvolume_reset(&i->sink_volume, 2); + pa_cvolume_reset(&i->source_volume, 2); + i->volume_modify_count = 0; + i->sink_index = (uint32_t) -1; + i->source_index = (uint32_t) -1; + i->optr_n_blocks = 0; + PA_LLIST_INIT(fd_info, i); + + reset_params(i); + + if (socketpair(AF_UNIX, SOCK_STREAM, 0, sfds) < 0) { + *_errno = errno; + debug(DEBUG_LEVEL_NORMAL, __FILE__": socket() failed: %s\n", strerror(errno)); + goto fail; + } + + i->app_fd = sfds[0]; + i->thread_fd = sfds[1]; + + if (!(i->mainloop = pa_threaded_mainloop_new())) { + *_errno = EIO; + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_threaded_mainloop_new() failed\n"); + goto fail; + } + + if (!(i->context = pa_context_new(pa_threaded_mainloop_get_api(i->mainloop), client_name(name, sizeof(name))))) { + *_errno = EIO; + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_context_new() failed\n"); + goto fail; + } + + pa_context_set_state_callback(i->context, context_state_cb, i); + + if (pa_context_connect(i->context, NULL, 0, NULL) < 0) { + *_errno = ECONNREFUSED; + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_context_connect() failed: %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + pa_threaded_mainloop_lock(i->mainloop); + + if (pa_threaded_mainloop_start(i->mainloop) < 0) { + *_errno = EIO; + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_threaded_mainloop_start() failed\n"); + goto unlock_and_fail; + } + + /* Wait until the context is ready */ + pa_threaded_mainloop_wait(i->mainloop); + + if (pa_context_get_state(i->context) != PA_CONTEXT_READY) { + *_errno = ECONNREFUSED; + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_context_connect() failed: %s\n", pa_strerror(pa_context_errno(i->context))); + goto unlock_and_fail; + } + + pa_threaded_mainloop_unlock(i->mainloop); + return i; + +unlock_and_fail: + + pa_threaded_mainloop_unlock(i->mainloop); + +fail: + + if (i) + fd_info_unref(i); + + return NULL; +} + +static void fd_info_add_to_list(fd_info *i) { + assert(i); + + pthread_mutex_lock(&fd_infos_mutex); + PA_LLIST_PREPEND(fd_info, fd_infos, i); + pthread_mutex_unlock(&fd_infos_mutex); + + fd_info_ref(i); +} + +static void fd_info_remove_from_list(fd_info *i) { + assert(i); + + pthread_mutex_lock(&fd_infos_mutex); + PA_LLIST_REMOVE(fd_info, fd_infos, i); + pthread_mutex_unlock(&fd_infos_mutex); + + fd_info_unref(i); +} + +static fd_info* fd_info_find(int fd) { + fd_info *i; + + pthread_mutex_lock(&fd_infos_mutex); + + for (i = fd_infos; i; i = i->next) + if (i->app_fd == fd && !i->unusable) { + fd_info_ref(i); + break; + } + + pthread_mutex_unlock(&fd_infos_mutex); + + return i; +} + +static void fix_metrics(fd_info *i) { + size_t fs; + char t[PA_SAMPLE_SPEC_SNPRINT_MAX]; + + fs = pa_frame_size(&i->sample_spec); + + /* Don't fix things more than necessary */ + if ((i->fragment_size % fs) == 0 && + i->n_fragments >= 2 && + i->fragment_size > 0) + return; + + i->fragment_size = (i->fragment_size/fs)*fs; + + /* Number of fragments set? */ + if (i->n_fragments < 2) { + if (i->fragment_size > 0) { + i->n_fragments = (unsigned) (pa_bytes_per_second(&i->sample_spec) / 2 / i->fragment_size); + if (i->n_fragments < 2) + i->n_fragments = 2; + } else + i->n_fragments = 12; + } + + /* Fragment size set? */ + if (i->fragment_size <= 0) { + i->fragment_size = pa_bytes_per_second(&i->sample_spec) / 2 / i->n_fragments; + if (i->fragment_size < 1024) + i->fragment_size = 1024; + } + + debug(DEBUG_LEVEL_NORMAL, __FILE__": sample spec: %s\n", pa_sample_spec_snprint(t, sizeof(t), &i->sample_spec)); + debug(DEBUG_LEVEL_NORMAL, __FILE__": fixated metrics to %i fragments, %li bytes each.\n", i->n_fragments, (long)i->fragment_size); +} + +static void stream_request_cb(pa_stream *s, size_t length, void *userdata) { + fd_info *i = userdata; + assert(s); + + if (i->io_event) { + pa_mainloop_api *api; + size_t n; + + api = pa_threaded_mainloop_get_api(i->mainloop); + + if (s == i->play_stream) { + n = pa_stream_writable_size(i->play_stream); + if (n == (size_t)-1) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_writable_size(): %s\n", + pa_strerror(pa_context_errno(i->context))); + } + + if (n >= i->fragment_size) + i->io_flags |= PA_IO_EVENT_INPUT; + else + i->io_flags &= ~PA_IO_EVENT_INPUT; + } + + if (s == i->rec_stream) { + n = pa_stream_readable_size(i->rec_stream); + if (n == (size_t)-1) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_readable_size(): %s\n", + pa_strerror(pa_context_errno(i->context))); + } + + if (n >= i->fragment_size) + i->io_flags |= PA_IO_EVENT_OUTPUT; + else + i->io_flags &= ~PA_IO_EVENT_OUTPUT; + } + + api->io_enable(i->io_event, i->io_flags); + } +} + +static void stream_latency_update_cb(pa_stream *s, void *userdata) { + fd_info *i = userdata; + assert(s); + + pa_threaded_mainloop_signal(i->mainloop, 0); +} + +static void fd_info_shutdown(fd_info *i) { + assert(i); + + if (i->io_event) { + pa_mainloop_api *api; + api = pa_threaded_mainloop_get_api(i->mainloop); + api->io_free(i->io_event); + i->io_event = NULL; + i->io_flags = 0; + } + + if (i->thread_fd >= 0) { + close(i->thread_fd); + i->thread_fd = -1; + } +} + +static int fd_info_copy_data(fd_info *i, int force) { + size_t n; + + if (!i->play_stream && !i->rec_stream) + return -1; + + if ((i->play_stream) && (pa_stream_get_state(i->play_stream) == PA_STREAM_READY)) { + n = pa_stream_writable_size(i->play_stream); + + if (n == (size_t)-1) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_writable_size(): %s\n", + pa_strerror(pa_context_errno(i->context))); + return -1; + } + + while (n >= i->fragment_size || force) { + ssize_t r; + size_t to_write; + + if (!i->buf) { + if (!(i->buf = malloc(i->fragment_size))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": malloc() failed.\n"); + return -1; + } + + i->leftover = 0; + } + + if ((r = read(i->thread_fd, ((uint8_t *) i->buf) + i->leftover, i->fragment_size - i->leftover)) <= 0) { + + if (errno == EAGAIN) + break; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": read(): %s\n", r == 0 ? "EOF" : strerror(errno)); + return -1; + } + + to_write = pa_frame_align(r + i->leftover, &i->sample_spec); + + if (pa_stream_write(i->play_stream, i->buf, to_write, NULL, 0LL, PA_SEEK_RELATIVE) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_write(): %s\n", pa_strerror(pa_context_errno(i->context))); + return -1; + } + + i->leftover += r - to_write; + if (i->leftover) + memmove(i->buf, ((uint8_t *) i->buf) + to_write, i->leftover); + + assert(n >= (size_t) to_write); + n -= (size_t) to_write; + } + + if (n >= i->fragment_size) + i->io_flags |= PA_IO_EVENT_INPUT; + else + i->io_flags &= ~PA_IO_EVENT_INPUT; + } + + if ((i->rec_stream) && (pa_stream_get_state(i->rec_stream) == PA_STREAM_READY)) { + n = pa_stream_readable_size(i->rec_stream); + + if (n == (size_t)-1) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_readable_size(): %s\n", + pa_strerror(pa_context_errno(i->context))); + return -1; + } + + while (n >= i->fragment_size || force) { + ssize_t r; + const void *data; + const char *buf; + size_t len; + + if (pa_stream_peek(i->rec_stream, &data, &len) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_peek(): %s\n", pa_strerror(pa_context_errno(i->context))); + return -1; + } + + if (len <= 0) + break; + + if (!data) { + /* Maybe we should generate silence here, but I'm lazy and + * I'll just skip any holes in the stream. */ + if (pa_stream_drop(i->rec_stream) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_drop(): %s\n", pa_strerror(pa_context_errno(i->context))); + return -1; + } + + assert(n >= len); + n -= len; + continue; + } + + buf = (const char*)data + i->rec_offset; + + if ((r = write(i->thread_fd, buf, len - i->rec_offset)) <= 0) { + + if (errno == EAGAIN) + break; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": write(): %s\n", strerror(errno)); + return -1; + } + + assert((size_t)r <= len - i->rec_offset); + i->rec_offset += (size_t) r; + + if (i->rec_offset == len) { + if (pa_stream_drop(i->rec_stream) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_drop(): %s\n", pa_strerror(pa_context_errno(i->context))); + return -1; + } + i->rec_offset = 0; + } + + assert(n >= (size_t) r); + n -= (size_t) r; + } + + if (n >= i->fragment_size) + i->io_flags |= PA_IO_EVENT_OUTPUT; + else + i->io_flags &= ~PA_IO_EVENT_OUTPUT; + } + + if (i->io_event) { + pa_mainloop_api *api; + + api = pa_threaded_mainloop_get_api(i->mainloop); + api->io_enable(i->io_event, i->io_flags); + } + + /* So, we emptied the socket now, let's tell dsp_empty_socket() + * about this */ + pa_threaded_mainloop_signal(i->mainloop, 0); + + return 0; +} + +static void stream_state_cb(pa_stream *s, void * userdata) { + fd_info *i = userdata; + assert(s); + + switch (pa_stream_get_state(s)) { + + case PA_STREAM_READY: + debug(DEBUG_LEVEL_NORMAL, __FILE__": stream established.\n"); + break; + + case PA_STREAM_FAILED: + if (s == i->play_stream) { + debug(DEBUG_LEVEL_NORMAL, + __FILE__": pa_stream_connect_playback() failed: %s\n", + pa_strerror(pa_context_errno(i->context))); + pa_stream_unref(i->play_stream); + i->play_stream = NULL; + } else if (s == i->rec_stream) { + debug(DEBUG_LEVEL_NORMAL, + __FILE__": pa_stream_connect_record() failed: %s\n", + pa_strerror(pa_context_errno(i->context))); + pa_stream_unref(i->rec_stream); + i->rec_stream = NULL; + } + fd_info_shutdown(i); + break; + + case PA_STREAM_TERMINATED: + case PA_STREAM_UNCONNECTED: + case PA_STREAM_CREATING: + break; + } +} + +static int create_playback_stream(fd_info *i) { + pa_buffer_attr attr; + int n, flags; + + assert(i); + + fix_metrics(i); + + if (!(i->play_stream = pa_stream_new(i->context, stream_name(), &i->sample_spec, NULL))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + pa_stream_set_state_callback(i->play_stream, stream_state_cb, i); + pa_stream_set_write_callback(i->play_stream, stream_request_cb, i); + pa_stream_set_latency_update_callback(i->play_stream, stream_latency_update_cb, i); + + memset(&attr, 0, sizeof(attr)); + attr.maxlength = (uint32_t) (i->fragment_size * (i->n_fragments+1)); + attr.tlength = (uint32_t) (i->fragment_size * i->n_fragments); + attr.prebuf = (uint32_t) i->fragment_size; + attr.minreq = (uint32_t) i->fragment_size; + + flags = PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE|PA_STREAM_EARLY_REQUESTS; + if (i->play_precork) { + flags |= PA_STREAM_START_CORKED; + debug(DEBUG_LEVEL_NORMAL, __FILE__": creating stream corked\n"); + } + if (pa_stream_connect_playback(i->play_stream, NULL, &attr, flags, NULL, NULL) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + n = (int) i->fragment_size; + setsockopt(i->app_fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n)); + n = (int) i->fragment_size; + setsockopt(i->thread_fd, SOL_SOCKET, SO_RCVBUF, &n, sizeof(n)); + + return 0; + +fail: + return -1; +} + +static int create_record_stream(fd_info *i) { + pa_buffer_attr attr; + int n, flags; + + assert(i); + + fix_metrics(i); + + if (!(i->rec_stream = pa_stream_new(i->context, stream_name(), &i->sample_spec, NULL))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + pa_stream_set_state_callback(i->rec_stream, stream_state_cb, i); + pa_stream_set_read_callback(i->rec_stream, stream_request_cb, i); + pa_stream_set_latency_update_callback(i->rec_stream, stream_latency_update_cb, i); + + memset(&attr, 0, sizeof(attr)); + attr.maxlength = (uint32_t) (i->fragment_size * (i->n_fragments+1)); + attr.fragsize = (uint32_t) i->fragment_size; + + flags = PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE; + if (i->rec_precork) { + flags |= PA_STREAM_START_CORKED; + debug(DEBUG_LEVEL_NORMAL, __FILE__": creating stream corked\n"); + } + if (pa_stream_connect_record(i->rec_stream, NULL, &attr, flags) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + n = (int) i->fragment_size; + setsockopt(i->app_fd, SOL_SOCKET, SO_RCVBUF, &n, sizeof(n)); + n = (int) i->fragment_size; + setsockopt(i->thread_fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n)); + + return 0; + +fail: + return -1; +} + +static void free_streams(fd_info *i) { + assert(i); + + if (i->play_stream) { + pa_stream_disconnect(i->play_stream); + pa_stream_unref(i->play_stream); + i->play_stream = NULL; + i->io_flags |= PA_IO_EVENT_INPUT; + } + + if (i->rec_stream) { + pa_stream_disconnect(i->rec_stream); + pa_stream_unref(i->rec_stream); + i->rec_stream = NULL; + i->io_flags |= PA_IO_EVENT_OUTPUT; + } + + if (i->io_event) { + pa_mainloop_api *api; + + api = pa_threaded_mainloop_get_api(i->mainloop); + api->io_enable(i->io_event, i->io_flags); + } +} + +static void io_event_cb(pa_mainloop_api *api, pa_io_event *e, int fd, pa_io_event_flags_t flags, void *userdata) { + fd_info *i = userdata; + + pa_threaded_mainloop_signal(i->mainloop, 0); + + if (flags & PA_IO_EVENT_INPUT) { + + if (!i->play_stream) { + if (create_playback_stream(i) < 0) + goto fail; + } else { + if (fd_info_copy_data(i, 0) < 0) + goto fail; + } + + } else if (flags & PA_IO_EVENT_OUTPUT) { + + if (!i->rec_stream) { + if (create_record_stream(i) < 0) + goto fail; + } else { + if (fd_info_copy_data(i, 0) < 0) + goto fail; + } + + } else if (flags & (PA_IO_EVENT_HANGUP|PA_IO_EVENT_ERROR)) + goto fail; + + return; + +fail: + /* We can't do anything better than removing the event source */ + fd_info_shutdown(i); +} + +static int dsp_open(int flags, int *_errno) { + fd_info *i; + pa_mainloop_api *api; + int ret; + int f; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": dsp_open()\n"); + + if (!(i = fd_info_new(FD_INFO_STREAM, _errno))) + return -1; + + if ((flags & O_NONBLOCK) == O_NONBLOCK) { + if ((f = fcntl(i->app_fd, F_GETFL)) >= 0) + fcntl(i->app_fd, F_SETFL, f|O_NONBLOCK); + } + if ((f = fcntl(i->thread_fd, F_GETFL)) >= 0) + fcntl(i->thread_fd, F_SETFL, f|O_NONBLOCK); + + fcntl(i->app_fd, F_SETFD, FD_CLOEXEC); + fcntl(i->thread_fd, F_SETFD, FD_CLOEXEC); + + pa_threaded_mainloop_lock(i->mainloop); + api = pa_threaded_mainloop_get_api(i->mainloop); + + switch (flags & O_ACCMODE) { + case O_RDONLY: + i->io_flags = PA_IO_EVENT_OUTPUT; + shutdown(i->thread_fd, SHUT_RD); + shutdown(i->app_fd, SHUT_WR); + break; + case O_WRONLY: + i->io_flags = PA_IO_EVENT_INPUT; + shutdown(i->thread_fd, SHUT_WR); + shutdown(i->app_fd, SHUT_RD); + break; + case O_RDWR: + i->io_flags = PA_IO_EVENT_INPUT | PA_IO_EVENT_OUTPUT; + break; + default: + pa_threaded_mainloop_unlock(i->mainloop); + fd_info_unref(i); + *_errno = EIO; + return -1; + } + + if (!(i->io_event = api->io_new(api, i->thread_fd, i->io_flags, io_event_cb, i))) + goto fail; + + pa_threaded_mainloop_unlock(i->mainloop); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": dsp_open() succeeded, fd=%i\n", i->app_fd); + + fd_info_add_to_list(i); + ret = i->app_fd; + fd_info_unref(i); + + return ret; + +fail: + pa_threaded_mainloop_unlock(i->mainloop); + + if (i) + fd_info_unref(i); + + *_errno = EIO; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": dsp_open() failed\n"); + + return -1; +} + +static void sink_info_cb(pa_context *context, const pa_sink_info *si, int eol, void *userdata) { + fd_info *i = userdata; + + if (eol < 0) { + i->operation_success = 0; + pa_threaded_mainloop_signal(i->mainloop, 0); + return; + } + + if (eol) + return; + + if (!pa_cvolume_equal(&i->sink_volume, &si->volume)) + i->volume_modify_count++; + + i->sink_volume = si->volume; + i->sink_index = si->index; + + i->operation_success = 1; + pa_threaded_mainloop_signal(i->mainloop, 0); +} + +static void source_info_cb(pa_context *context, const pa_source_info *si, int eol, void *userdata) { + fd_info *i = userdata; + + if (eol < 0) { + i->operation_success = 0; + pa_threaded_mainloop_signal(i->mainloop, 0); + return; + } + + if (eol) + return; + + if (!pa_cvolume_equal(&i->source_volume, &si->volume)) + i->volume_modify_count++; + + i->source_volume = si->volume; + i->source_index = si->index; + + i->operation_success = 1; + pa_threaded_mainloop_signal(i->mainloop, 0); +} + +static void subscribe_cb(pa_context *context, pa_subscription_event_type_t t, uint32_t idx, void *userdata) { + fd_info *i = userdata; + pa_operation *o = NULL; + + if (i->sink_index != idx) + return; + + if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) != PA_SUBSCRIPTION_EVENT_CHANGE) + return; + + if (!(o = pa_context_get_sink_info_by_index(i->context, i->sink_index, sink_info_cb, i))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get sink info: %s", pa_strerror(pa_context_errno(i->context))); + return; + } + + pa_operation_unref(o); +} + +static int mixer_open(int flags, int *_errno) { + fd_info *i; + pa_operation *o = NULL; + int ret; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": mixer_open()\n"); + + if (!(i = fd_info_new(FD_INFO_MIXER, _errno))) + return -1; + + pa_threaded_mainloop_lock(i->mainloop); + + pa_context_set_subscribe_callback(i->context, subscribe_cb, i); + + if (!(o = pa_context_subscribe(i->context, PA_SUBSCRIPTION_MASK_SINK | PA_SUBSCRIPTION_MASK_SOURCE, context_success_cb, i))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to subscribe to events: %s", pa_strerror(pa_context_errno(i->context))); + *_errno = EIO; + goto fail; + } + + i->operation_success = 0; + while (pa_operation_get_state(o) != PA_OPERATION_DONE) { + pa_threaded_mainloop_wait(i->mainloop); + CONTEXT_CHECK_DEAD_GOTO(i, fail); + } + + pa_operation_unref(o); + o = NULL; + + if (!i->operation_success) { + debug(DEBUG_LEVEL_NORMAL, __FILE__":Failed to subscribe to events: %s", pa_strerror(pa_context_errno(i->context))); + *_errno = EIO; + goto fail; + } + + /* Get sink info */ + + if (!(o = pa_context_get_sink_info_by_name(i->context, NULL, sink_info_cb, i))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get sink info: %s", pa_strerror(pa_context_errno(i->context))); + *_errno = EIO; + goto fail; + } + + i->operation_success = 0; + while (pa_operation_get_state(o) != PA_OPERATION_DONE) { + pa_threaded_mainloop_wait(i->mainloop); + CONTEXT_CHECK_DEAD_GOTO(i, fail); + } + + pa_operation_unref(o); + o = NULL; + + if (!i->operation_success) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get sink info: %s", pa_strerror(pa_context_errno(i->context))); + *_errno = EIO; + goto fail; + } + + /* Get source info */ + + if (!(o = pa_context_get_source_info_by_name(i->context, NULL, source_info_cb, i))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get source info: %s", pa_strerror(pa_context_errno(i->context))); + *_errno = EIO; + goto fail; + } + + i->operation_success = 0; + while (pa_operation_get_state(o) != PA_OPERATION_DONE) { + pa_threaded_mainloop_wait(i->mainloop); + CONTEXT_CHECK_DEAD_GOTO(i, fail); + } + + pa_operation_unref(o); + o = NULL; + + if (!i->operation_success) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get source info: %s", pa_strerror(pa_context_errno(i->context))); + *_errno = EIO; + goto fail; + } + + pa_threaded_mainloop_unlock(i->mainloop); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": mixer_open() succeeded, fd=%i\n", i->app_fd); + + fd_info_add_to_list(i); + ret = i->app_fd; + fd_info_unref(i); + + return ret; + +fail: + if (o) + pa_operation_unref(o); + + pa_threaded_mainloop_unlock(i->mainloop); + + if (i) + fd_info_unref(i); + + *_errno = EIO; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": mixer_open() failed\n"); + + return -1; +} + +static int sndstat_open(int flags, int *_errno) { + static const char sndstat[] = + "Sound Driver:3.8.1a-980706 (PulseAudio Virtual OSS)\n" + "Kernel: POSIX\n" + "Config options: 0\n" + "\n" + "Installed drivers:\n" + "Type 255: PulseAudio Virtual OSS\n" + "\n" + "Card config:\n" + "PulseAudio Virtual OSS\n" + "\n" + "Audio devices:\n" + "0: PulseAudio Virtual OSS\n" + "\n" + "Synth devices: NOT ENABLED IN CONFIG\n" + "\n" + "Midi devices:\n" + "\n" + "Timers:\n" + "\n" + "Mixers:\n" + "0: PulseAudio Virtual OSS\n"; + + char *fn; + mode_t u; + int fd = -1; + int e; + + fn = pa_sprintf_malloc("%s" PA_PATH_SEP "padsp-sndstat-XXXXXX", pa_get_temp_dir()); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": sndstat_open()\n"); + + if (flags != O_RDONLY +#ifdef O_LARGEFILE + && flags != (O_RDONLY|O_LARGEFILE) +#endif + ) { + *_errno = EACCES; + debug(DEBUG_LEVEL_NORMAL, __FILE__": bad access!\n"); + goto fail; + } + + u = umask(0077); + fd = mkstemp(fn); + e = errno; + umask(u); + + if (fd < 0) { + *_errno = e; + debug(DEBUG_LEVEL_NORMAL, __FILE__": mkstemp() failed: %s\n", strerror(errno)); + goto fail; + } + + unlink(fn); + pa_xfree(fn); + fn = NULL; + + if (write(fd, sndstat, sizeof(sndstat) -1) != sizeof(sndstat)-1) { + *_errno = errno; + debug(DEBUG_LEVEL_NORMAL, __FILE__": write() failed: %s\n", strerror(errno)); + goto fail; + } + + if (lseek(fd, SEEK_SET, 0) < 0) { + *_errno = errno; + debug(DEBUG_LEVEL_NORMAL, __FILE__": lseek() failed: %s\n", strerror(errno)); + goto fail; + } + + return fd; + +fail: + pa_xfree(fn); + if (fd >= 0) + close(fd); + return -1; +} + +static int real_open(const char *filename, int flags, mode_t mode) { + int r, _errno = 0; + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": open(%s)\n", filename?filename:"NULL"); + + if (!function_enter()) { + LOAD_OPEN_FUNC(); + return _open(filename, flags, mode); + } + + if (filename && dsp_cloak_enable() && (pa_streq(filename, "/dev/dsp") || pa_streq(filename, "/dev/adsp") || pa_streq(filename, "/dev/audio"))) + r = dsp_open(flags, &_errno); + else if (filename && mixer_cloak_enable() && pa_streq(filename, "/dev/mixer")) + r = mixer_open(flags, &_errno); + else if (filename && sndstat_cloak_enable() && pa_streq(filename, "/dev/sndstat")) + r = sndstat_open(flags, &_errno); + else { + function_exit(); + LOAD_OPEN_FUNC(); + return _open(filename, flags, mode); + } + + function_exit(); + + if (_errno) + errno = _errno; + + return r; +} + +int open(const char *filename, int flags, ...) { + va_list args; + mode_t mode = 0; + + if (flags & O_CREAT) { + va_start(args, flags); + if (sizeof(mode_t) < sizeof(int)) + mode = (mode_t) va_arg(args, int); + else + mode = va_arg(args, mode_t); + va_end(args); + } + + return real_open(filename, flags, mode); +} + +static bool is_audio_device_node(const char *path) { + return + pa_streq(path, "/dev/dsp") || + pa_streq(path, "/dev/adsp") || + pa_streq(path, "/dev/audio") || + pa_streq(path, "/dev/sndstat") || + pa_streq(path, "/dev/mixer"); +} + +int __open_2(const char *filename, int flags) { + debug(DEBUG_LEVEL_VERBOSE, __FILE__": __open_2(%s)\n", filename?filename:"NULL"); + + if ((flags & O_CREAT) || + !filename || + !is_audio_device_node(filename)) { + LOAD___OPEN_2_FUNC(); + return ___open_2(filename, flags); + } + return real_open(filename, flags, 0); +} + +static int mixer_ioctl(fd_info *i, unsigned long request, void*argp, int *_errno) { + int ret = -1; + + switch (request) { + case SOUND_MIXER_READ_DEVMASK : + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_DEVMASK\n"); + + *(int*) argp = SOUND_MASK_PCM | SOUND_MASK_IGAIN; + break; + + case SOUND_MIXER_READ_RECMASK : + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_RECMASK\n"); + + *(int*) argp = SOUND_MASK_IGAIN; + break; + + case SOUND_MIXER_READ_STEREODEVS: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_STEREODEVS\n"); + + pa_threaded_mainloop_lock(i->mainloop); + *(int*) argp = 0; + if (i->sink_volume.channels > 1) + *(int*) argp |= SOUND_MASK_PCM; + if (i->source_volume.channels > 1) + *(int*) argp |= SOUND_MASK_IGAIN; + pa_threaded_mainloop_unlock(i->mainloop); + + break; + + case SOUND_MIXER_READ_RECSRC: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_RECSRC\n"); + + *(int*) argp = SOUND_MASK_IGAIN; + break; + + case SOUND_MIXER_WRITE_RECSRC: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_WRITE_RECSRC\n"); + break; + + case SOUND_MIXER_READ_CAPS: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_CAPS\n"); + + *(int*) argp = 0; + break; + + case SOUND_MIXER_READ_PCM: + case SOUND_MIXER_READ_IGAIN: { + pa_cvolume *v; + + if (request == SOUND_MIXER_READ_PCM) + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_PCM\n"); + else + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_IGAIN\n"); + + pa_threaded_mainloop_lock(i->mainloop); + + if (request == SOUND_MIXER_READ_PCM) + v = &i->sink_volume; + else + v = &i->source_volume; + + *(int*) argp = + ((v->values[0]*100/PA_VOLUME_NORM)) | + ((v->values[v->channels > 1 ? 1 : 0]*100/PA_VOLUME_NORM) << 8); + + pa_threaded_mainloop_unlock(i->mainloop); + + break; + } + + case SOUND_MIXER_WRITE_PCM: + case SOUND_MIXER_WRITE_IGAIN: { + pa_cvolume v, *pv; + + if (request == SOUND_MIXER_WRITE_PCM) + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_WRITE_PCM\n"); + else + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_WRITE_IGAIN\n"); + + pa_threaded_mainloop_lock(i->mainloop); + + if (request == SOUND_MIXER_WRITE_PCM) { + v = i->sink_volume; + pv = &i->sink_volume; + } else { + v = i->source_volume; + pv = &i->source_volume; + } + + pv->values[0] = ((*(int*) argp & 0xFF)*PA_VOLUME_NORM)/100; + pv->values[1] = ((*(int*) argp >> 8)*PA_VOLUME_NORM)/100; + + if (!pa_cvolume_equal(pv, &v)) { + pa_operation *o; + + if (request == SOUND_MIXER_WRITE_PCM) + o = pa_context_set_sink_volume_by_index(i->context, i->sink_index, pv, context_success_cb, i); + else + o = pa_context_set_source_volume_by_index(i->context, i->source_index, pv, context_success_cb, i); + + if (!o) + debug(DEBUG_LEVEL_NORMAL, __FILE__":Failed set volume: %s", pa_strerror(pa_context_errno(i->context))); + else { + + i->operation_success = 0; + while (pa_operation_get_state(o) != PA_OPERATION_DONE) { + CONTEXT_CHECK_DEAD_GOTO(i, exit_loop); + + pa_threaded_mainloop_wait(i->mainloop); + } + exit_loop: + + if (!i->operation_success) + debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to set volume: %s\n", pa_strerror(pa_context_errno(i->context))); + + pa_operation_unref(o); + } + + /* We don't wait for completion here */ + i->volume_modify_count++; + } + + pa_threaded_mainloop_unlock(i->mainloop); + + break; + } + + case SOUND_MIXER_INFO: { + mixer_info *mi = argp; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_INFO\n"); + + memset(mi, 0, sizeof(mixer_info)); + strncpy(mi->id, "PULSEAUDIO", sizeof(mi->id)); + strncpy(mi->name, "PulseAudio Virtual OSS", sizeof(mi->name)); + pa_threaded_mainloop_lock(i->mainloop); + mi->modify_counter = i->volume_modify_count; + pa_threaded_mainloop_unlock(i->mainloop); + break; + } + + default: + debug(DEBUG_LEVEL_NORMAL, __FILE__": unknown ioctl 0x%08lx\n", request); + + *_errno = EINVAL; + goto fail; + } + + ret = 0; + +fail: + + return ret; +} + +static int map_format(int *fmt, pa_sample_spec *ss) { + + switch (*fmt) { + case AFMT_MU_LAW: + ss->format = PA_SAMPLE_ULAW; + break; + + case AFMT_A_LAW: + ss->format = PA_SAMPLE_ALAW; + break; + + case AFMT_S8: + *fmt = AFMT_U8; + /* fall through */ + case AFMT_U8: + ss->format = PA_SAMPLE_U8; + break; + + case AFMT_U16_BE: + *fmt = AFMT_S16_BE; + /* fall through */ + case AFMT_S16_BE: + ss->format = PA_SAMPLE_S16BE; + break; + + case AFMT_U16_LE: + *fmt = AFMT_S16_LE; + /* fall through */ + case AFMT_S16_LE: + ss->format = PA_SAMPLE_S16LE; + break; + + default: + ss->format = PA_SAMPLE_S16NE; + *fmt = AFMT_S16_NE; + break; + } + + return 0; +} + +static int map_format_back(pa_sample_format_t format) { + switch (format) { + case PA_SAMPLE_S16LE: return AFMT_S16_LE; + case PA_SAMPLE_S16BE: return AFMT_S16_BE; + case PA_SAMPLE_ULAW: return AFMT_MU_LAW; + case PA_SAMPLE_ALAW: return AFMT_A_LAW; + case PA_SAMPLE_U8: return AFMT_U8; + default: + abort(); + } +} + +static int dsp_flush_fd(int fd) { +#ifdef SIOCINQ + int l; + + if (ioctl(fd, SIOCINQ, &l) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ: %s\n", strerror(errno)); + return -1; + } + + while (l > 0) { + char buf[1024]; + size_t k; + ssize_t r; + + k = (size_t) l > sizeof(buf) ? sizeof(buf) : (size_t) l; + r = read(fd, buf, k); + if (r < 0) { + if (errno == EAGAIN) + break; + debug(DEBUG_LEVEL_NORMAL, __FILE__": read(): %s\n", strerror(errno)); + return -1; + } else if (r == 0) + break; + l -= r; + } + + return 0; +#else +# warning "Your platform does not support SIOCINQ, something might not work as intended." + return 0; +#endif +} + +static int dsp_flush_socket(fd_info *i) { + int res = 0; + + if ((i->thread_fd < 0) && (i->app_fd < 0)) + return -1; + + if (i->thread_fd >= 0) + res = dsp_flush_fd(i->thread_fd); + + if (res < 0) + return res; + + if (i->app_fd >= 0) + res = dsp_flush_fd(i->app_fd); + + if (res < 0) + return res; + + return 0; +} + +static int dsp_empty_socket(fd_info *i) { +#ifdef SIOCINQ + int ret = -1; + + /* Empty the socket */ + for (;;) { + int l; + + if (i->thread_fd < 0) + break; + + if (ioctl(i->thread_fd, SIOCINQ, &l) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ: %s\n", strerror(errno)); + break; + } + + if (!l) { + ret = 0; + break; + } + + pa_threaded_mainloop_wait(i->mainloop); + } + + return ret; +#else +# warning "Your platform does not support SIOCINQ, something might not work as intended." + return 0; +#endif +} + +static int dsp_drain(fd_info *i) { + pa_operation *o = NULL; + int r = -1; + + if (!i->mainloop) + return 0; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": Draining.\n"); + + pa_threaded_mainloop_lock(i->mainloop); + + if (dsp_empty_socket(i) < 0) + goto fail; + + if (!i->play_stream) + goto fail; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": Really draining.\n"); + + if (!(o = pa_stream_drain(i->play_stream, stream_success_cb, i))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + i->operation_success = 0; + while (pa_operation_get_state(o) != PA_OPERATION_DONE) { + PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, fail); + + pa_threaded_mainloop_wait(i->mainloop); + } + + if (!i->operation_success) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_drain() 2: %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + r = 0; + +fail: + + if (o) + pa_operation_unref(o); + + pa_threaded_mainloop_unlock(i->mainloop); + + return r; +} + +static int dsp_trigger(fd_info *i) { + pa_operation *o = NULL; + int r = -1; + + if (!i->play_stream) + return 0; + + pa_threaded_mainloop_lock(i->mainloop); + + if (dsp_empty_socket(i) < 0) + goto fail; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": Triggering.\n"); + + if (!(o = pa_stream_trigger(i->play_stream, stream_success_cb, i))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_trigger(): %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + i->operation_success = 0; + while (pa_operation_get_state(o) != PA_OPERATION_DONE) { + PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, fail); + + pa_threaded_mainloop_wait(i->mainloop); + } + + if (!i->operation_success) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_trigger(): %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + r = 0; + +fail: + + if (o) + pa_operation_unref(o); + + pa_threaded_mainloop_unlock(i->mainloop); + + return r; +} + +static int dsp_cork(fd_info *i, pa_stream *s, int b) { + pa_operation *o = NULL; + int r = -1; + + pa_threaded_mainloop_lock(i->mainloop); + + if (!(o = pa_stream_cork(s, b, stream_success_cb, i))) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_cork(): %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + i->operation_success = 0; + while (pa_operation_get_state(o) != PA_OPERATION_DONE) { + if (s == i->play_stream) + PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, fail); + else if (s == i->rec_stream) + RECORD_STREAM_CHECK_DEAD_GOTO(i, fail); + + pa_threaded_mainloop_wait(i->mainloop); + } + + if (!i->operation_success) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_cork(): %s\n", pa_strerror(pa_context_errno(i->context))); + goto fail; + } + + r = 0; + +fail: + + if (o) + pa_operation_unref(o); + + pa_threaded_mainloop_unlock(i->mainloop); + + return r; +} + +static int dsp_ioctl(fd_info *i, unsigned long request, void*argp, int *_errno) { + int ret = -1; + + if (i->thread_fd == -1) { + /* + * We've encountered some fatal error and are just waiting + * for a close. + */ + debug(DEBUG_LEVEL_NORMAL, __FILE__": got ioctl 0x%08lx in fatal error state\n", request); + *_errno = EIO; + return -1; + } + + switch (request) { + case SNDCTL_DSP_SETFMT: { + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SETFMT: %i\n", *(int*) argp); + + pa_threaded_mainloop_lock(i->mainloop); + + if (*(int*) argp == AFMT_QUERY) + *(int*) argp = map_format_back(i->sample_spec.format); + else { + map_format((int*) argp, &i->sample_spec); + free_streams(i); + } + + pa_threaded_mainloop_unlock(i->mainloop); + break; + } + + case SNDCTL_DSP_SPEED: { + pa_sample_spec ss; + int valid; + char t[256]; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SPEED: %i\n", *(int*) argp); + + pa_threaded_mainloop_lock(i->mainloop); + + ss = i->sample_spec; + ss.rate = *(int*) argp; + + if ((valid = pa_sample_spec_valid(&ss))) { + i->sample_spec = ss; + free_streams(i); + } + + debug(DEBUG_LEVEL_NORMAL, __FILE__": ss: %s\n", pa_sample_spec_snprint(t, sizeof(t), &i->sample_spec)); + + pa_threaded_mainloop_unlock(i->mainloop); + + if (!valid) { + *_errno = EINVAL; + goto fail; + } + + break; + } + + case SNDCTL_DSP_STEREO: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_STEREO: %i\n", *(int*) argp); + + pa_threaded_mainloop_lock(i->mainloop); + + i->sample_spec.channels = *(int*) argp ? 2 : 1; + free_streams(i); + + pa_threaded_mainloop_unlock(i->mainloop); + return 0; + + case SNDCTL_DSP_CHANNELS: { + pa_sample_spec ss; + int valid; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_CHANNELS: %i\n", *(int*) argp); + + pa_threaded_mainloop_lock(i->mainloop); + + ss = i->sample_spec; + ss.channels = *(int*) argp; + + if ((valid = pa_sample_spec_valid(&ss))) { + i->sample_spec = ss; + free_streams(i); + } + + pa_threaded_mainloop_unlock(i->mainloop); + + if (!valid) { + *_errno = EINVAL; + goto fail; + } + + break; + } + + case SNDCTL_DSP_GETBLKSIZE: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETBLKSIZE\n"); + + pa_threaded_mainloop_lock(i->mainloop); + + fix_metrics(i); + *(int*) argp = i->fragment_size; + + pa_threaded_mainloop_unlock(i->mainloop); + + break; + + case SNDCTL_DSP_SETFRAGMENT: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SETFRAGMENT: 0x%08x\n", *(int*) argp); + + pa_threaded_mainloop_lock(i->mainloop); + + i->fragment_size = 1 << ((*(int*) argp) & 31); + i->n_fragments = (*(int*) argp) >> 16; + + /* 0x7FFF means that we can set whatever we like */ + if (i->n_fragments == 0x7FFF) + i->n_fragments = 12; + + free_streams(i); + + pa_threaded_mainloop_unlock(i->mainloop); + + break; + + case SNDCTL_DSP_GETCAPS: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_CAPS\n"); + + *(int*) argp = DSP_CAP_DUPLEX | DSP_CAP_TRIGGER +#ifdef DSP_CAP_MULTI + | DSP_CAP_MULTI +#endif + ; + break; + + case SNDCTL_DSP_GETODELAY: { + int l; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETODELAY\n"); + + pa_threaded_mainloop_lock(i->mainloop); + + *(int*) argp = 0; + + for (;;) { + pa_usec_t usec; + + PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, exit_loop); + + if (pa_stream_get_latency(i->play_stream, &usec, NULL) >= 0) { + *(int*) argp = pa_usec_to_bytes(usec, &i->sample_spec); + break; + } + + if (pa_context_errno(i->context) != PA_ERR_NODATA) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_get_latency(): %s\n", pa_strerror(pa_context_errno(i->context))); + break; + } + + pa_threaded_mainloop_wait(i->mainloop); + } + + exit_loop: + +#ifdef SIOCINQ + if (ioctl(i->thread_fd, SIOCINQ, &l) < 0) + debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ failed: %s\n", strerror(errno)); + else + *(int*) argp += l; +#else +# warning "Your platform does not support SIOCINQ, something might not work as intended." +#endif + + pa_threaded_mainloop_unlock(i->mainloop); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": ODELAY: %i\n", *(int*) argp); + + break; + } + + case SNDCTL_DSP_RESET: { + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_RESET\n"); + + pa_threaded_mainloop_lock(i->mainloop); + + free_streams(i); + dsp_flush_socket(i); + + i->optr_n_blocks = 0; + + pa_threaded_mainloop_unlock(i->mainloop); + break; + } + + case SNDCTL_DSP_GETFMTS: { + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETFMTS\n"); + + *(int*) argp = AFMT_MU_LAW|AFMT_A_LAW|AFMT_U8|AFMT_S16_LE|AFMT_S16_BE; + break; + } + + case SNDCTL_DSP_POST: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_POST\n"); + + if (dsp_trigger(i) < 0) + *_errno = EIO; + break; + + case SNDCTL_DSP_GETTRIGGER: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETTRIGGER\n"); + + *(int*) argp = 0; + if (!i->play_precork) + *(int*) argp |= PCM_ENABLE_OUTPUT; + if (!i->rec_precork) + *(int*) argp |= PCM_ENABLE_INPUT; + + break; + + case SNDCTL_DSP_SETTRIGGER: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SETTRIGGER: 0x%08x\n", *(int*) argp); + + if (!i->io_event) { + *_errno = EIO; + break; + } + + i->play_precork = !((*(int*) argp) & PCM_ENABLE_OUTPUT); + + if (i->play_stream) { + if (dsp_cork(i, i->play_stream, !((*(int*) argp) & PCM_ENABLE_OUTPUT)) < 0) + *_errno = EIO; + if (dsp_trigger(i) < 0) + *_errno = EIO; + } + + i->rec_precork = !((*(int*) argp) & PCM_ENABLE_INPUT); + + if (i->rec_stream) { + if (dsp_cork(i, i->rec_stream, !((*(int*) argp) & PCM_ENABLE_INPUT)) < 0) + *_errno = EIO; + } + + break; + + case SNDCTL_DSP_SYNC: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SYNC\n"); + + if (dsp_drain(i) < 0) + *_errno = EIO; + + break; + + case SNDCTL_DSP_GETOSPACE: + case SNDCTL_DSP_GETISPACE: { + audio_buf_info *bi = (audio_buf_info*) argp; + int l = 0; + size_t k = 0; + + if (request == SNDCTL_DSP_GETOSPACE) + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETOSPACE\n"); + else + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETISPACE\n"); + + pa_threaded_mainloop_lock(i->mainloop); + + fix_metrics(i); + + if (request == SNDCTL_DSP_GETOSPACE) { + if (i->play_stream) { + if ((k = pa_stream_writable_size(i->play_stream)) == (size_t) -1) + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_writable_size(): %s\n", pa_strerror(pa_context_errno(i->context))); + } else + k = i->fragment_size * i->n_fragments; + +#ifdef SIOCINQ + if (ioctl(i->thread_fd, SIOCINQ, &l) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ failed: %s\n", strerror(errno)); + l = 0; + } +#else +# warning "Your platform does not dsp_flush_fd, something might not work as intended." +#endif + + bi->bytes = k > (size_t) l ? k - l : 0; + } else { + if (i->rec_stream) { + if ((k = pa_stream_readable_size(i->rec_stream)) == (size_t) -1) + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_readable_size(): %s\n", pa_strerror(pa_context_errno(i->context))); + } else + k = 0; + +#ifdef SIOCINQ + if (ioctl(i->app_fd, SIOCINQ, &l) < 0) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ failed: %s\n", strerror(errno)); + l = 0; + } +#else +# warning "Your platform does not dsp_flush_fd, something might not work as intended." +#endif + bi->bytes = k + l; + } + + bi->fragsize = i->fragment_size; + bi->fragstotal = i->n_fragments; + bi->fragments = bi->bytes / bi->fragsize; + + pa_threaded_mainloop_unlock(i->mainloop); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": fragsize=%i, fragstotal=%i, bytes=%i, fragments=%i\n", bi->fragsize, bi->fragstotal, bi->bytes, bi->fragments); + + break; + } + +#ifdef HAVE_DECL_SOUND_PCM_READ_RATE + case SOUND_PCM_READ_RATE: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_PCM_READ_RATE\n"); + + pa_threaded_mainloop_lock(i->mainloop); + *(int*) argp = i->sample_spec.rate; + pa_threaded_mainloop_unlock(i->mainloop); + break; +#endif + +#ifdef HAVE_DECL_SOUND_PCM_READ_CHANNELS + case SOUND_PCM_READ_CHANNELS: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_PCM_READ_CHANNELS\n"); + + pa_threaded_mainloop_lock(i->mainloop); + *(int*) argp = i->sample_spec.channels; + pa_threaded_mainloop_unlock(i->mainloop); + break; +#endif + +#ifdef HAVE_DECL_SOUND_PCM_READ_BITS + case SOUND_PCM_READ_BITS: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_PCM_READ_BITS\n"); + + pa_threaded_mainloop_lock(i->mainloop); + *(int*) argp = pa_sample_size(&i->sample_spec)*8; + pa_threaded_mainloop_unlock(i->mainloop); + break; +#endif + + case SNDCTL_DSP_GETOPTR: { + count_info *info; + + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETOPTR\n"); + + info = (count_info*) argp; + memset(info, 0, sizeof(*info)); + + pa_threaded_mainloop_lock(i->mainloop); + + for (;;) { + pa_usec_t usec; + + PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, exit_loop2); + + if (pa_stream_get_time(i->play_stream, &usec) >= 0) { + size_t k = pa_usec_to_bytes(usec, &i->sample_spec); + int m; + + info->bytes = (int) k; + m = k / i->fragment_size; + info->blocks = m - i->optr_n_blocks; + i->optr_n_blocks = m; + + break; + } + + if (pa_context_errno(i->context) != PA_ERR_NODATA) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_get_latency(): %s\n", pa_strerror(pa_context_errno(i->context))); + break; + } + + pa_threaded_mainloop_wait(i->mainloop); + } + + exit_loop2: + + pa_threaded_mainloop_unlock(i->mainloop); + + debug(DEBUG_LEVEL_NORMAL, __FILE__": GETOPTR bytes=%i, blocks=%i, ptr=%i\n", info->bytes, info->blocks, info->ptr); + + break; + } + + case SNDCTL_DSP_GETIPTR: + debug(DEBUG_LEVEL_NORMAL, __FILE__": invalid ioctl SNDCTL_DSP_GETIPTR\n"); + goto inval; + + case SNDCTL_DSP_SETDUPLEX: + debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SETDUPLEX\n"); + /* this is a no-op */ + break; + + default: + /* Mixer ioctls are valid on /dev/dsp as well */ + return mixer_ioctl(i, request, argp, _errno); + +inval: + *_errno = EINVAL; + goto fail; + } + + ret = 0; + +fail: + + return ret; +} + +#ifndef __GLIBC__ +int ioctl(int fd, int request, ...) { +#else +int ioctl(int fd, unsigned long request, ...) { +#endif + fd_info *i; + va_list args; + void *argp; + int r, _errno = 0; + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": ioctl()\n"); + + va_start(args, request); + argp = va_arg(args, void *); + va_end(args); + + if (!function_enter()) { + LOAD_IOCTL_FUNC(); + return _ioctl(fd, request, argp); + } + + if (!(i = fd_info_find(fd))) { + function_exit(); + LOAD_IOCTL_FUNC(); + return _ioctl(fd, request, argp); + } + + if (i->type == FD_INFO_MIXER) + r = mixer_ioctl(i, request, argp, &_errno); + else + r = dsp_ioctl(i, request, argp, &_errno); + + fd_info_unref(i); + + if (_errno) + errno = _errno; + + function_exit(); + + return r; +} + +int close(int fd) { + fd_info *i; + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": close()\n"); + + if (!function_enter()) { + LOAD_CLOSE_FUNC(); + return _close(fd); + } + + if (!(i = fd_info_find(fd))) { + function_exit(); + LOAD_CLOSE_FUNC(); + return _close(fd); + } + + fd_info_remove_from_list(i); + fd_info_unref(i); + + function_exit(); + + return 0; +} + +int access(const char *pathname, int mode) { + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": access(%s)\n", pathname?pathname:"NULL"); + + if (!pathname || + !is_audio_device_node(pathname)) { + LOAD_ACCESS_FUNC(); + return _access(pathname, mode); + } + + if (mode & X_OK) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": access(%s, %x) = EACCESS\n", pathname, mode); + errno = EACCES; + return -1; + } + + debug(DEBUG_LEVEL_NORMAL, __FILE__": access(%s, %x) = OK\n", pathname, mode); + + return 0; +} + +int stat(const char *pathname, struct stat *buf) { +#ifdef HAVE_OPEN64 + struct stat64 parent; +#else + struct stat parent; +#endif + int ret; + + if (!pathname || + !buf || + !is_audio_device_node(pathname)) { + debug(DEBUG_LEVEL_VERBOSE, __FILE__": stat(%s)\n", pathname?pathname:"NULL"); + LOAD_STAT_FUNC(); + return _stat(pathname, buf); + } + + debug(DEBUG_LEVEL_NORMAL, __FILE__": stat(%s)\n", pathname); + +#ifdef _STAT_VER +#ifdef HAVE_OPEN64 + ret = __xstat64(_STAT_VER, "/dev", &parent); +#else + ret = __xstat(_STAT_VER, "/dev", &parent); +#endif +#else +#ifdef HAVE_OPEN64 + ret = stat64("/dev", &parent); +#else + ret = stat("/dev", &parent); +#endif +#endif + + if (ret) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": unable to stat \"/dev\"\n"); + return -1; + } + + buf->st_dev = parent.st_dev; + buf->st_ino = 0xDEADBEEF; /* FIXME: Can we do this in a safe way? */ + buf->st_mode = S_IFCHR | S_IRUSR | S_IWUSR; + buf->st_nlink = 1; + buf->st_uid = getuid(); + buf->st_gid = getgid(); + buf->st_rdev = 0x0E03; /* FIXME: Linux specific */ + buf->st_size = 0; + buf->st_atime = 1181557705; + buf->st_mtime = 1181557705; + buf->st_ctime = 1181557705; + buf->st_blksize = 1; + buf->st_blocks = 0; + + return 0; +} +#ifdef HAVE_OPEN64 +#undef stat64 +#ifdef __GLIBC__ +int stat64(const char *pathname, struct stat64 *buf) { +#else +int stat64(const char *pathname, struct stat *buf) { +#endif + struct stat oldbuf; + int ret; + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": stat64(%s)\n", pathname?pathname:"NULL"); + + if (!pathname || + !buf || + !is_audio_device_node(pathname)) { + LOAD_STAT64_FUNC(); + return _stat64(pathname, buf); + } + + ret = stat(pathname, &oldbuf); + if (ret) + return ret; + + buf->st_dev = oldbuf.st_dev; + buf->st_ino = oldbuf.st_ino; + buf->st_mode = oldbuf.st_mode; + buf->st_nlink = oldbuf.st_nlink; + buf->st_uid = oldbuf.st_uid; + buf->st_gid = oldbuf.st_gid; + buf->st_rdev = oldbuf.st_rdev; + buf->st_size = oldbuf.st_size; + buf->st_atime = oldbuf.st_atime; + buf->st_mtime = oldbuf.st_mtime; + buf->st_ctime = oldbuf.st_ctime; + buf->st_blksize = oldbuf.st_blksize; + buf->st_blocks = oldbuf.st_blocks; + + return 0; +} +#undef open64 +int open64(const char *filename, int flags, ...) { + va_list args; + mode_t mode = 0; + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": open64(%s)\n", filename?filename:"NULL"); + + if (flags & O_CREAT) { + va_start(args, flags); + if (sizeof(mode_t) < sizeof(int)) + mode = va_arg(args, int); + else + mode = va_arg(args, mode_t); + va_end(args); + } + + if (!filename || + !is_audio_device_node(filename)) { + LOAD_OPEN64_FUNC(); + return _open64(filename, flags, mode); + } + + return real_open(filename, flags, mode); +} + +int __open64_2(const char *filename, int flags) { + debug(DEBUG_LEVEL_VERBOSE, __FILE__": __open64_2(%s)\n", filename?filename:"NULL"); + + if ((flags & O_CREAT) || + !filename || + !is_audio_device_node(filename)) { + LOAD___OPEN64_2_FUNC(); + return ___open64_2(filename, flags); + } + + return real_open(filename, flags, 0); +} + +#endif + +#ifdef _STAT_VER + +int __xstat(int ver, const char *pathname, struct stat *buf) { + debug(DEBUG_LEVEL_VERBOSE, __FILE__": __xstat(%s)\n", pathname?pathname:"NULL"); + + if (!pathname || + !buf || + !is_audio_device_node(pathname)) { + LOAD_XSTAT_FUNC(); + return ___xstat(ver, pathname, buf); + } + + if (ver != _STAT_VER) { + errno = EINVAL; + return -1; + } + + return stat(pathname, buf); +} + +#ifdef HAVE_OPEN64 + +int __xstat64(int ver, const char *pathname, struct stat64 *buf) { + debug(DEBUG_LEVEL_VERBOSE, __FILE__": __xstat64(%s)\n", pathname?pathname:"NULL"); + + if (!pathname || + !buf || + !is_audio_device_node(pathname)) { + LOAD_XSTAT64_FUNC(); + return ___xstat64(ver, pathname, buf); + } + + if (ver != _STAT_VER) { + errno = EINVAL; + return -1; + } + + return stat64(pathname, buf); +} + +#endif + +#endif + +FILE* fopen(const char *filename, const char *mode) { + FILE *f = NULL; + int fd; + mode_t m; + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": fopen(%s)\n", filename?filename:"NULL"); + + if (!filename || + !mode || + !is_audio_device_node(filename)) { + LOAD_FOPEN_FUNC(); + return _fopen(filename, mode); + } + + switch (mode[0]) { + case 'r': + m = O_RDONLY; + break; + case 'w': + case 'a': + m = O_WRONLY; + break; + default: + errno = EINVAL; + return NULL; + } + + if ((((mode[1] == 'b') || (mode[1] == 't')) && (mode[2] == '+')) || (mode[1] == '+')) + m = O_RDWR; + + if ((fd = real_open(filename, m, 0)) < 0) + return NULL; + + if (!(f = fdopen(fd, mode))) { + close(fd); + return NULL; + } + + return f; +} + +#ifdef HAVE_OPEN64 +#undef fopen64 +FILE *fopen64(const char *__restrict filename, const char *__restrict mode) { + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": fopen64(%s)\n", filename?filename:"NULL"); + + if (!filename || + !mode || + !is_audio_device_node(filename)) { + LOAD_FOPEN64_FUNC(); + return _fopen64(filename, mode); + } + + return fopen(filename, mode); +} + +#endif + +int fclose(FILE *f) { + fd_info *i; + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": fclose()\n"); + + if (!function_enter()) { + LOAD_FCLOSE_FUNC(); + return _fclose(f); + } + + if (!(i = fd_info_find(fileno(f)))) { + function_exit(); + LOAD_FCLOSE_FUNC(); + return _fclose(f); + } + + fd_info_remove_from_list(i); + + /* Dirty trick to avoid that the fd is not freed twice, once by us + * and once by the real fclose() */ + i->app_fd = -1; + + fd_info_unref(i); + + function_exit(); + + LOAD_FCLOSE_FUNC(); + return _fclose(f); +} |