widget/gtk/nsSound.cpp
author Doug Turner <doug.turner@gmail.com>
Tue, 03 Feb 2015 17:00:00 +0100
changeset 243715 840987c23fc597bdaad4567c2387ba1aa06c65d0
parent 229731 1a1712c6b1423954e25c4f31997127b58c17259b
child 283391 91c69276782a255aaaff1e27c3fe339b63134472
permissions -rw-r--r--
Bug 1045229 - Beacons are not associated with windows. The current window based filtering that the network monitor does will skip requests that come from sendBeacon(). Here we explictly look to see if the network channel is from beacon by looking at the loadinfo. r=dcamp, a=sledru

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
 */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include <string.h>

#include "nscore.h"
#include "plstr.h"
#include "prlink.h"

#include "nsSound.h"

#include "nsIURL.h"
#include "nsIFileURL.h"
#include "nsNetUtil.h"
#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "nsString.h"
#include "nsDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "mozilla/FileUtils.h"
#include "mozilla/Services.h"
#include "nsIStringBundle.h"
#include "nsIXULAppInfo.h"
#include "nsContentUtils.h"

#include <stdio.h>
#include <unistd.h>

#include <gtk/gtk.h>
static PRLibrary *libcanberra = nullptr;

/* used to play sounds with libcanberra. */
typedef struct _ca_context ca_context;
typedef struct _ca_proplist ca_proplist;

typedef void (*ca_finish_callback_t) (ca_context *c,
                                      uint32_t id,
                                      int error_code,
                                      void *userdata);

typedef int (*ca_context_create_fn) (ca_context **);
typedef int (*ca_context_destroy_fn) (ca_context *);
typedef int (*ca_context_play_fn) (ca_context *c,
                                   uint32_t id,
                                   ...);
typedef int (*ca_context_change_props_fn) (ca_context *c,
                                           ...);
typedef int (*ca_proplist_create_fn) (ca_proplist **);
typedef int (*ca_proplist_destroy_fn) (ca_proplist *);
typedef int (*ca_proplist_sets_fn) (ca_proplist *c,
                                    const char *key,
                                    const char *value);
typedef int (*ca_context_play_full_fn) (ca_context *c,
                                        uint32_t id,
                                        ca_proplist *p,
                                        ca_finish_callback_t cb,
                                        void *userdata);

static ca_context_create_fn ca_context_create;
static ca_context_destroy_fn ca_context_destroy;
static ca_context_play_fn ca_context_play;
static ca_context_change_props_fn ca_context_change_props;
static ca_proplist_create_fn ca_proplist_create;
static ca_proplist_destroy_fn ca_proplist_destroy;
static ca_proplist_sets_fn ca_proplist_sets;
static ca_context_play_full_fn ca_context_play_full;

struct ScopedCanberraFile {
    explicit ScopedCanberraFile(nsIFile *file): mFile(file) {};

    ~ScopedCanberraFile() {
        if (mFile) {
            mFile->Remove(false);
        }
    }

    void forget() {
        mFile.forget();
    }
    nsIFile* operator->() { return mFile; }
    operator nsIFile*() { return mFile; }

    nsCOMPtr<nsIFile> mFile;
};

static ca_context*
ca_context_get_default()
{
    // This allows us to avoid race conditions with freeing the context by handing that
    // responsibility to Glib, and still use one context at a time
    static GStaticPrivate ctx_static_private = G_STATIC_PRIVATE_INIT;

    ca_context* ctx = (ca_context*) g_static_private_get(&ctx_static_private);

    if (ctx) {
        return ctx;
    }

    ca_context_create(&ctx);
    if (!ctx) {
        return nullptr;
    }

    g_static_private_set(&ctx_static_private, ctx, (GDestroyNotify) ca_context_destroy);

    GtkSettings* settings = gtk_settings_get_default();
    if (g_object_class_find_property(G_OBJECT_GET_CLASS(settings),
                                     "gtk-sound-theme-name")) {
        gchar* sound_theme_name = nullptr;
        g_object_get(settings, "gtk-sound-theme-name", &sound_theme_name,
                     nullptr);

        if (sound_theme_name) {
            ca_context_change_props(ctx, "canberra.xdg-theme.name",
                                    sound_theme_name, nullptr);
            g_free(sound_theme_name);
        }
    }

    nsCOMPtr<nsIStringBundleService> bundleService =
        mozilla::services::GetStringBundleService();
    if (bundleService) {
        nsCOMPtr<nsIStringBundle> brandingBundle;
        bundleService->CreateBundle("chrome://branding/locale/brand.properties",
                                    getter_AddRefs(brandingBundle));
        if (brandingBundle) {
            nsAutoString wbrand;
            brandingBundle->GetStringFromName(MOZ_UTF16("brandShortName"),
                                              getter_Copies(wbrand));
            NS_ConvertUTF16toUTF8 brand(wbrand);

            ca_context_change_props(ctx, "application.name", brand.get(),
                                    nullptr);
        }
    }

    nsCOMPtr<nsIXULAppInfo> appInfo = do_GetService("@mozilla.org/xre/app-info;1");
    if (appInfo) {
        nsAutoCString version;
        appInfo->GetVersion(version);

        ca_context_change_props(ctx, "application.version", version.get(),
                                nullptr);
    }

    ca_context_change_props(ctx, "application.icon_name", MOZ_APP_NAME,
                            nullptr);

    return ctx;
}

static void
ca_finish_cb(ca_context *c,
             uint32_t id,
             int error_code,
             void *userdata)
{
    nsIFile *file = reinterpret_cast<nsIFile *>(userdata);
    if (file) {
        file->Remove(false);
        NS_RELEASE(file);
    }
}

NS_IMPL_ISUPPORTS(nsSound, nsISound, nsIStreamLoaderObserver)

////////////////////////////////////////////////////////////////////////
nsSound::nsSound()
{
    mInited = false;
}

nsSound::~nsSound()
{
}

NS_IMETHODIMP
nsSound::Init()
{
    // This function is designed so that no library is compulsory, and
    // one library missing doesn't cause the other(s) to not be used.
    if (mInited) 
        return NS_OK;

    mInited = true;

    if (!libcanberra) {
        libcanberra = PR_LoadLibrary("libcanberra.so.0");
        if (libcanberra) {
            ca_context_create = (ca_context_create_fn) PR_FindFunctionSymbol(libcanberra, "ca_context_create");
            if (!ca_context_create) {
                PR_UnloadLibrary(libcanberra);
                libcanberra = nullptr;
            } else {
                // at this point we know we have a good libcanberra library
                ca_context_destroy = (ca_context_destroy_fn) PR_FindFunctionSymbol(libcanberra, "ca_context_destroy");
                ca_context_play = (ca_context_play_fn) PR_FindFunctionSymbol(libcanberra, "ca_context_play");
                ca_context_change_props = (ca_context_change_props_fn) PR_FindFunctionSymbol(libcanberra, "ca_context_change_props");
                ca_proplist_create = (ca_proplist_create_fn) PR_FindFunctionSymbol(libcanberra, "ca_proplist_create");
                ca_proplist_destroy = (ca_proplist_destroy_fn) PR_FindFunctionSymbol(libcanberra, "ca_proplist_destroy");
                ca_proplist_sets = (ca_proplist_sets_fn) PR_FindFunctionSymbol(libcanberra, "ca_proplist_sets");
                ca_context_play_full = (ca_context_play_full_fn) PR_FindFunctionSymbol(libcanberra, "ca_context_play_full");
            }
        }
    }

    return NS_OK;
}

/* static */ void
nsSound::Shutdown()
{
    if (libcanberra) {
        PR_UnloadLibrary(libcanberra);
        libcanberra = nullptr;
    }
}

NS_IMETHODIMP nsSound::OnStreamComplete(nsIStreamLoader *aLoader,
                                        nsISupports *context,
                                        nsresult aStatus,
                                        uint32_t dataLen,
                                        const uint8_t *data)
{
    // print a load error on bad status, and return
    if (NS_FAILED(aStatus)) {
#ifdef DEBUG
        if (aLoader) {
            nsCOMPtr<nsIRequest> request;
            aLoader->GetRequest(getter_AddRefs(request));
            if (request) {
                nsCOMPtr<nsIURI> uri;
                nsCOMPtr<nsIChannel> channel = do_QueryInterface(request);
                if (channel) {
                      channel->GetURI(getter_AddRefs(uri));
                      if (uri) {
                            nsAutoCString uriSpec;
                            uri->GetSpec(uriSpec);
                            printf("Failed to load %s\n", uriSpec.get());
                      }
                }
            }
        }
#endif
        return aStatus;
    }

    nsCOMPtr<nsIFile> tmpFile;
    nsDirectoryService::gService->Get(NS_OS_TEMP_DIR, NS_GET_IID(nsIFile),
                                      getter_AddRefs(tmpFile));

    nsresult rv = tmpFile->AppendNative(nsDependentCString("mozilla_audio_sample"));
    if (NS_FAILED(rv)) {
        return rv;
    }

    rv = tmpFile->CreateUnique(nsIFile::NORMAL_FILE_TYPE, PR_IRUSR | PR_IWUSR);
    if (NS_FAILED(rv)) {
        return rv;
    }

    ScopedCanberraFile canberraFile(tmpFile);

    mozilla::AutoFDClose fd;
    rv = canberraFile->OpenNSPRFileDesc(PR_WRONLY, PR_IRUSR | PR_IWUSR,
                                        &fd.rwget());
    if (NS_FAILED(rv)) {
        return rv;
    }

    // XXX: Should we do this on another thread?
    uint32_t length = dataLen;
    while (length > 0) {
        int32_t amount = PR_Write(fd, data, length);
        if (amount < 0) {
            return NS_ERROR_FAILURE;
        }
        length -= amount;
        data += amount;
    }

    ca_context* ctx = ca_context_get_default();
    if (!ctx) {
        return NS_ERROR_OUT_OF_MEMORY;
    }

    ca_proplist *p;
    ca_proplist_create(&p);
    if (!p) {
        return NS_ERROR_OUT_OF_MEMORY;
    }

    nsAutoCString path;
    rv = canberraFile->GetNativePath(path);
    if (NS_FAILED(rv)) {
        return rv;
    }

    ca_proplist_sets(p, "media.filename", path.get());
    if (ca_context_play_full(ctx, 0, p, ca_finish_cb, canberraFile) >= 0) {
        // Don't delete the temporary file here if ca_context_play_full succeeds
        canberraFile.forget();
    }
    ca_proplist_destroy(p);

    return NS_OK;
}

NS_METHOD nsSound::Beep()
{
    ::gdk_beep();
    return NS_OK;
}

NS_METHOD nsSound::Play(nsIURL *aURL)
{
    if (!mInited)
        Init();

    if (!libcanberra)
        return NS_ERROR_NOT_AVAILABLE;

    bool isFile;
    nsresult rv = aURL->SchemeIs("file", &isFile);
    if (NS_SUCCEEDED(rv) && isFile) {
        ca_context* ctx = ca_context_get_default();
        if (!ctx) {
            return NS_ERROR_OUT_OF_MEMORY;
        }

        nsAutoCString spec;
        rv = aURL->GetSpec(spec);
        if (NS_FAILED(rv)) {
            return rv;
        }
        gchar *path = g_filename_from_uri(spec.get(), nullptr, nullptr);
        if (!path) {
            return NS_ERROR_FILE_UNRECOGNIZED_PATH;
        }

        ca_context_play(ctx, 0, "media.filename", path, nullptr);
        g_free(path);
    } else {
        nsCOMPtr<nsIStreamLoader> loader;
        rv = NS_NewStreamLoader(getter_AddRefs(loader),
                                aURL,
                                this, // aObserver
                                nsContentUtils::GetSystemPrincipal(),
                                nsILoadInfo::SEC_NORMAL,
                                nsIContentPolicy::TYPE_OTHER);
    }

    return rv;
}

NS_IMETHODIMP nsSound::PlayEventSound(uint32_t aEventId)
{
    if (!mInited)
        Init();

    if (!libcanberra)
        return NS_OK;

    // Do we even want alert sounds?
    GtkSettings* settings = gtk_settings_get_default();

    if (g_object_class_find_property(G_OBJECT_GET_CLASS(settings),
                                     "gtk-enable-event-sounds")) {
        gboolean enable_sounds = TRUE;
        g_object_get(settings, "gtk-enable-event-sounds", &enable_sounds, nullptr);

        if (!enable_sounds) {
            return NS_OK;
        }
    }

    ca_context* ctx = ca_context_get_default();
    if (!ctx) {
        return NS_ERROR_OUT_OF_MEMORY;
    }

    switch (aEventId) {
        case EVENT_ALERT_DIALOG_OPEN:
            ca_context_play(ctx, 0, "event.id", "dialog-warning", nullptr);
            break;
        case EVENT_CONFIRM_DIALOG_OPEN:
            ca_context_play(ctx, 0, "event.id", "dialog-question", nullptr);
            break;
        case EVENT_NEW_MAIL_RECEIVED:
            ca_context_play(ctx, 0, "event.id", "message-new-email", nullptr);
            break;
        case EVENT_MENU_EXECUTE:
            ca_context_play(ctx, 0, "event.id", "menu-click", nullptr);
            break;
        case EVENT_MENU_POPUP:
            ca_context_play(ctx, 0, "event.id", "menu-popup", nullptr);
            break;
    }
    return NS_OK;
}

NS_IMETHODIMP nsSound::PlaySystemSound(const nsAString &aSoundAlias)
{
    if (NS_IsMozAliasSound(aSoundAlias)) {
        NS_WARNING("nsISound::playSystemSound is called with \"_moz_\" events, they are obsolete, use nsISound::playEventSound instead");
        uint32_t eventId;
        if (aSoundAlias.Equals(NS_SYSSOUND_ALERT_DIALOG))
            eventId = EVENT_ALERT_DIALOG_OPEN;
        else if (aSoundAlias.Equals(NS_SYSSOUND_CONFIRM_DIALOG))
            eventId = EVENT_CONFIRM_DIALOG_OPEN;
        else if (aSoundAlias.Equals(NS_SYSSOUND_MAIL_BEEP))
            eventId = EVENT_NEW_MAIL_RECEIVED;
        else if (aSoundAlias.Equals(NS_SYSSOUND_MENU_EXECUTE))
            eventId = EVENT_MENU_EXECUTE;
        else if (aSoundAlias.Equals(NS_SYSSOUND_MENU_POPUP))
            eventId = EVENT_MENU_POPUP;
        else
            return NS_OK;
        return PlayEventSound(eventId);
    }

    nsresult rv;
    nsCOMPtr <nsIURI> fileURI;

    // create a nsIFile and then a nsIFileURL from that
    nsCOMPtr <nsIFile> soundFile;
    rv = NS_NewLocalFile(aSoundAlias, true, 
                         getter_AddRefs(soundFile));
    NS_ENSURE_SUCCESS(rv,rv);

    rv = NS_NewFileURI(getter_AddRefs(fileURI), soundFile);
    NS_ENSURE_SUCCESS(rv,rv);

    nsCOMPtr<nsIFileURL> fileURL = do_QueryInterface(fileURI,&rv);
    NS_ENSURE_SUCCESS(rv,rv);

    rv = Play(fileURL);

    return rv;
}