big s/polyp/pulse/g

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/pulsecore/core-scache.c

@@ -0,0 +1,412 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+ 
+  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 <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <limits.h>
+
+#ifdef HAVE_GLOB_H
+#include <glob.h>
+#endif
+
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+
+#include <pulse/mainloop.h>
+#include <pulse/channelmap.h>
+#include <pulse/timeval.h>
+#include <pulse/util.h>
+#include <pulse/volume.h>
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/sink-input.h>
+#include <pulsecore/sample-util.h>
+#include <pulsecore/play-memchunk.h>
+#include <pulsecore/core-subscribe.h>
+#include <pulsecore/namereg.h>
+#include <pulsecore/sound-file.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-error.h>
+
+#include "core-scache.h"
+
+#define UNLOAD_POLL_TIME 2
+
+static void timeout_callback(pa_mainloop_api *m, pa_time_event*e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
+    pa_core *c = userdata;
+    struct timeval ntv;
+    assert(c && c->mainloop == m && c->scache_auto_unload_event == e);
+
+    pa_scache_unload_unused(c);
+
+    pa_gettimeofday(&ntv);
+    ntv.tv_sec += UNLOAD_POLL_TIME;
+    m->time_restart(e, &ntv);
+}
+
+static void free_entry(pa_scache_entry *e) {
+    assert(e);
+    pa_namereg_unregister(e->core, e->name);
+    pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_REMOVE, e->index);
+    pa_xfree(e->name);
+    pa_xfree(e->filename);
+    if (e->memchunk.memblock)
+        pa_memblock_unref(e->memchunk.memblock);
+    pa_xfree(e);
+}
+
+static pa_scache_entry* scache_add_item(pa_core *c, const char *name) {
+    pa_scache_entry *e;
+    assert(c && name);
+
+    if ((e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0))) {
+        if (e->memchunk.memblock)
+            pa_memblock_unref(e->memchunk.memblock);
+
+        pa_xfree(e->filename);
+        
+        assert(e->core == c);
+
+        pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
+    } else {
+        e = pa_xmalloc(sizeof(pa_scache_entry));
+
+        if (!pa_namereg_register(c, name, PA_NAMEREG_SAMPLE, e, 1)) {
+            pa_xfree(e);
+            return NULL;
+        }
+
+        e->name = pa_xstrdup(name);
+        e->core = c;
+
+        if (!c->scache) {
+            c->scache = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
+            assert(c->scache);
+        }
+
+        pa_idxset_put(c->scache, e, &e->index);
+
+        pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_NEW, e->index);
+    }
+
+    e->last_used_time = 0;
+    e->memchunk.memblock = NULL;
+    e->memchunk.index = e->memchunk.length = 0;
+    e->filename = NULL;
+    e->lazy = 0;
+    e->last_used_time = 0;
+
+    memset(&e->sample_spec, 0, sizeof(e->sample_spec));
+    pa_channel_map_init(&e->channel_map);
+    pa_cvolume_reset(&e->volume, PA_CHANNELS_MAX);
+
+    return e;
+}
+
+int pa_scache_add_item(pa_core *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map, const pa_memchunk *chunk, uint32_t *idx) {
+    pa_scache_entry *e;
+    assert(c && name);
+
+    if (chunk && chunk->length > PA_SCACHE_ENTRY_SIZE_MAX)
+        return -1;
+
+    if (!(e = scache_add_item(c, name)))
+        return -1;
+
+    if (ss) {
+        e->sample_spec = *ss;
+        pa_channel_map_init_auto(&e->channel_map, ss->channels, PA_CHANNEL_MAP_DEFAULT);
+        e->volume.channels = e->sample_spec.channels;
+    }
+
+    if (map)
+        e->channel_map = *map;
+
+    if (chunk) {
+        e->memchunk = *chunk;
+        pa_memblock_ref(e->memchunk.memblock);
+    }
+
+    if (idx)
+        *idx = e->index;
+
+    return 0;
+}
+
+int pa_scache_add_file(pa_core *c, const char *name, const char *filename, uint32_t *idx) {
+    pa_sample_spec ss;
+    pa_channel_map map;
+    pa_memchunk chunk;
+    int r;
+
+#ifdef OS_IS_WIN32
+    char buf[MAX_PATH];
+
+    if (ExpandEnvironmentStrings(filename, buf, MAX_PATH))
+        filename = buf;
+#endif
+
+    if (pa_sound_file_load(filename, &ss, &map, &chunk, c->memblock_stat) < 0)
+        return -1;
+        
+    r = pa_scache_add_item(c, name, &ss, &map, &chunk, idx);
+    pa_memblock_unref(chunk.memblock);
+
+    return r;
+}
+
+int pa_scache_add_file_lazy(pa_core *c, const char *name, const char *filename, uint32_t *idx) {
+    pa_scache_entry *e;
+
+#ifdef OS_IS_WIN32
+    char buf[MAX_PATH];
+
+    if (ExpandEnvironmentStrings(filename, buf, MAX_PATH))
+        filename = buf;
+#endif
+
+    assert(c && name);
+
+    if (!(e = scache_add_item(c, name)))
+        return -1;
+
+    e->lazy = 1;
+    e->filename = pa_xstrdup(filename);
+    
+    if (!c->scache_auto_unload_event) {
+        struct timeval ntv;
+        pa_gettimeofday(&ntv);
+        ntv.tv_sec += UNLOAD_POLL_TIME;
+        c->scache_auto_unload_event = c->mainloop->time_new(c->mainloop, &ntv, timeout_callback, c);
+    }
+
+    if (idx)
+        *idx = e->index;
+
+    return 0;
+}
+
+int pa_scache_remove_item(pa_core *c, const char *name) {
+    pa_scache_entry *e;
+    assert(c && name);
+
+    if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
+        return -1;
+
+    if (pa_idxset_remove_by_data(c->scache, e, NULL) != e)
+        assert(0);
+
+    free_entry(e);
+    return 0;
+}
+
+static void free_cb(void *p, PA_GCC_UNUSED void *userdata) {
+    pa_scache_entry *e = p;
+    assert(e);
+    free_entry(e);
+}
+
+void pa_scache_free(pa_core *c) {
+    assert(c);
+
+    if (c->scache) {
+        pa_idxset_free(c->scache, free_cb, NULL);
+        c->scache = NULL;
+    }
+
+    if (c->scache_auto_unload_event)
+        c->mainloop->time_free(c->scache_auto_unload_event);
+}
+
+int pa_scache_play_item(pa_core *c, const char *name, pa_sink *sink, pa_volume_t volume) {
+    pa_scache_entry *e;
+    char *t;
+    pa_cvolume r;
+    
+    assert(c);
+    assert(name);
+    assert(sink);
+
+    if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 1)))
+        return -1;
+
+    if (e->lazy && !e->memchunk.memblock) {
+        if (pa_sound_file_load(e->filename, &e->sample_spec, &e->channel_map, &e->memchunk, c->memblock_stat) < 0)
+            return -1;
+
+        pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
+
+        if (e->volume.channels > e->sample_spec.channels)
+            e->volume.channels = e->sample_spec.channels;
+    }
+    
+    if (!e->memchunk.memblock)
+        return -1;
+
+    t = pa_sprintf_malloc("sample:%s", name);
+
+    pa_cvolume_set(&r, e->volume.channels, volume);
+    pa_sw_cvolume_multiply(&r, &r, &e->volume);
+
+    if (pa_play_memchunk(sink, t, &e->sample_spec, &e->channel_map, &e->memchunk, &r) < 0) {
+        pa_xfree(t);
+        return -1;
+    }
+
+    pa_xfree(t);
+
+    if (e->lazy)
+        time(&e->last_used_time);
+    
+    return 0;
+}
+
+const char * pa_scache_get_name_by_id(pa_core *c, uint32_t id) {
+    pa_scache_entry *e;
+    assert(c && id != PA_IDXSET_INVALID);
+
+    if (!c->scache || !(e = pa_idxset_get_by_index(c->scache, id)))
+        return NULL;
+
+    return e->name;
+}
+
+uint32_t pa_scache_get_id_by_name(pa_core *c, const char *name) {
+    pa_scache_entry *e;
+    assert(c && name);
+
+    if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
+        return PA_IDXSET_INVALID;
+
+    return e->index;
+}
+
+uint32_t pa_scache_total_size(pa_core *c) {
+    pa_scache_entry *e;
+    uint32_t idx, sum = 0;
+    assert(c);
+
+    if (!c->scache || !pa_idxset_size(c->scache))
+        return 0;
+    
+    for (e = pa_idxset_first(c->scache, &idx); e; e = pa_idxset_next(c->scache, &idx))
+        if (e->memchunk.memblock)
+            sum += e->memchunk.length;
+
+    return sum;
+}
+
+void pa_scache_unload_unused(pa_core *c) {
+    pa_scache_entry *e;
+    time_t now;
+    uint32_t idx;
+    assert(c);
+
+    if (!c->scache || !pa_idxset_size(c->scache))
+        return;
+    
+    time(&now);
+
+    for (e = pa_idxset_first(c->scache, &idx); e; e = pa_idxset_next(c->scache, &idx)) {
+
+        if (!e->lazy || !e->memchunk.memblock)
+            continue;
+
+        if (e->last_used_time + c->scache_idle_time > now)
+            continue;
+        
+        pa_memblock_unref(e->memchunk.memblock);
+        e->memchunk.memblock = NULL;
+        e->memchunk.index = e->memchunk.length = 0;
+
+        pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
+    }
+}
+
+static void add_file(pa_core *c, const char *pathname) {
+    struct stat st;
+    const char *e;
+
+    e = pa_path_get_filename(pathname);
+    
+    if (stat(pathname, &st) < 0) {
+        pa_log(__FILE__": stat('%s'): %s", pathname, pa_cstrerror(errno));
+        return;
+    }
+
+#if defined(S_ISREG) && defined(S_ISLNK)
+    if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
+#endif
+        pa_scache_add_file_lazy(c, e, pathname, NULL);
+}
+
+int pa_scache_add_directory_lazy(pa_core *c, const char *pathname) {
+    DIR *dir;
+    assert(c && pathname);
+
+    /* First try to open this as directory */
+    if (!(dir = opendir(pathname))) {
+#ifdef HAVE_GLOB_H
+        glob_t p;
+        unsigned int i;
+        /* If that fails, try to open it as shell glob */
+
+        if (glob(pathname, GLOB_ERR|GLOB_NOSORT, NULL, &p) < 0) {
+            pa_log(__FILE__": failed to open directory '%s': %s", pathname, pa_cstrerror(errno));
+            return -1;
+        }
+
+        for (i = 0; i < p.gl_pathc; i++)
+            add_file(c, p.gl_pathv[i]);
+        
+        globfree(&p);
+#else
+        return -1;
+#endif
+    } else {
+        struct dirent *e;
+
+        while ((e = readdir(dir))) {
+            char p[PATH_MAX];
+
+            if (e->d_name[0] == '.')
+                continue;
+
+            snprintf(p, sizeof(p), "%s/%s", pathname, e->d_name);
+            add_file(c, p);
+        }
+    }
+
+    closedir(dir);
+    return 0;
+}