~audio-recorder/audio-recorder/trunk

/*

 * Copyright (c) Linux community.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

*/

#include "media-profiles.h"

#include "log.h"

// Get media-profiles from the GNOME's media library (from the libgnome-media-dev package).

// You can find these values in the the GConf registry.

// Start gconf-editor and browse to: system -> gstreamer -> 0.10 -> audio -> profiles.

// Keep a list of supported media profiles (audio formats)

static GList *media_profiles_list = NULL;

void media_profiles_init() {

    LOG_DEBUG("Init media-profiles.c.\n");

    // Init GNOME's media profiles module

    gnome_media_profiles_init(NULL);

}

void media_profiles_exit() {

    LOG_DEBUG("Clean up media-profiles.c.\n");

    // Clean up. Free the list, do not touch data items.

    if (media_profiles_list)

        g_list_free(media_profiles_list);

    media_profiles_list = NULL;

}

void media_profiles_load() {

    // Load _active_ media profiles (audio formats)

    if (media_profiles_list) return;

    // Ref: http://www.susaaland.dk/sharedoc/gnome-media-2.10.2/ChangeLog

    media_profiles_list = gm_audio_profile_get_active_list();

}

GMAudioProfile *media_profiles_get_profile(gchar *id) {

    // Return media profile for the given id.

    // See: gconf-editor, key: system -> gstreamer -> 0.10 -> audio -> profiles.

    GMAudioProfile *profile = gm_audio_profile_lookup(id);

    // Do not free this value.

    return profile;

}

gchar *media_profiles_get_extension(gchar *id) {

    // Return file extension (such as .mp3, .ogg, .m4a) for the given profile id.

    // See: gconf-editor, key: system -> gstreamer -> 0.10 -> audio -> profiles (value for extension).

    const gchar *extension = NULL;

    GMAudioProfile *profile = gm_audio_profile_lookup(id);

    if (profile)

        extension = gm_audio_profile_get_extension(profile);

    // The caller should g_free() this value

    return g_strdup(extension);

}

gchar *media_profiles_get_pipeline(gchar *id) {

    // Return partial GStreamer pipeline for the given id.

    // See: gconf-editor, key: system -> gstreamer -> 0.10 -> audio -> profiles (value for pipeline).

    const gchar *pipeline = NULL;

    GMAudioProfile *profile = gm_audio_profile_lookup(id);

    if (profile)

        pipeline = gm_audio_profile_get_pipeline(profile);

    // The caller should g_free() this value

    return g_strdup(pipeline);

}

void media_profiles_add_data(GtkListStore *store) {

    // Fill the list store with _active_ media profiles (audio format ids and names).

    media_profiles_load();

    GtkTreeIter iter;

    GList *item = g_list_first(media_profiles_list);

    while (item) {

        GMAudioProfile *profile = (GMAudioProfile*)item->data;

        const gchar *id = gm_audio_profile_get_id(profile);

        const gchar *name = gm_audio_profile_get_name(profile);

        const gchar *extension = gm_audio_profile_get_extension(profile);

        // Typical audio format list is

        //  CD Quality, AAC (.m4a)

        //  CD Quality, Lossless (.flac)

        //  CD Quality, Lossy (.ogg)

        //  CD Quality, MP2 (.mp2)

        //  CD Quality, MP3 (.mp3)

        //  Voice, Lossless (.wav)

        //  Voice, Lossy (.spx)

        gchar *e = g_utf8_strup(extension, -1);

        gchar *n = g_utf8_strdown(name, -1);

        gchar *txt = g_strdup_printf(".%s  (%s)", e, n);

        // Add OGG type "CD Quality, Lossy" as first (becomes default)

        if (!g_strcmp0(extension, "ogg") || !g_strcmp0(extension, "oga")) {

            gtk_list_store_prepend(GTK_LIST_STORE(store), &iter);

        } else {

            // Add last

            gtk_list_store_append(GTK_LIST_STORE(store), &iter);

        }

        gtk_list_store_set(GTK_LIST_STORE(store), &iter, 0, id, 1, txt, -1);

        g_free(txt);

        g_free(e);

        g_free(n);

        item = g_list_next(item);

    }

}

gchar *media_profiles_get_selected_id(GtkWidget *widget) {

    // Return selected GMAudioProfile id (audio format id)

    GtkComboBox *combo = GTK_COMBO_BOX(widget);

    g_return_val_if_fail (GTK_IS_COMBO_BOX(combo), NULL);

    GtkTreeIter iter;

    gchar *id = NULL;

    if (!gtk_combo_box_get_active_iter(combo, &iter)) return NULL;

    gtk_tree_model_get(gtk_combo_box_get_model(combo), &iter, COL_PROFILE_ID, &id, -1);

    // The caller should g_free() this value

    return id;

}

GtkWidget *media_profiles_create_combobox() {

    // Create a GtkComboBox with N_PROFILE_COLUMNS. Populate it with supported audio formats.

    // Create list store

    GtkListStore *store = gtk_list_store_new(N_PROFILE_COLUMNS, G_TYPE_STRING, G_TYPE_STRING);

    // Get audio formats (media profiles) and add to the store

    media_profiles_add_data(store);

    GtkWidget *combo = gtk_combo_box_new_with_model(GTK_TREE_MODEL(store));

    // Unref store

    g_object_unref(store);

    // "Id" column, invisible

    GtkCellRenderer *cell = gtk_cell_renderer_text_new();

    g_object_set(cell, "visible", 0, NULL);

    gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combo), cell, TRUE);

    gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(combo), cell, "text", COL_PROFILE_ID, NULL);

    // "Name" column, visible

    cell = gtk_cell_renderer_text_new();

    gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combo), cell, TRUE);

    gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(combo), cell, "text", COL_PROFILE_TXT, NULL);

    return combo;

}