path: root/em-format/e-mail-formatter-audio.c

/*
 * e-mail-formatter-audio.c
 *
 * This program 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.
 *
 * This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <glib/gi18n-lib.h>

#include <camel/camel.h>

#include "e-mail-formatter-extension.h"
#include "e-mail-formatter.h"
#include "e-mail-part-audio.h"

#define d(x)

typedef EMailFormatterExtension EMailFormatterAudio;
typedef EMailFormatterExtensionClass EMailFormatterAudioClass;

GType e_mail_formatter_audio_get_type (void);

G_DEFINE_TYPE (
    EMailFormatterAudio,
    e_mail_formatter_audio,
    E_TYPE_MAIL_FORMATTER_EXTENSION)

static const gchar *formatter_mime_types[] = {
    "application/vnd.evolution.widget.audio",
    "audio/ac3",
    "audio/x-ac3",
    "audio/basic",
    "audio/mpeg",
    "audio/x-mpeg",
    "audio/mpeg3",
    "audio/x-mpeg3",
    "audio/mp3",
    "audio/x-mp3",
    "audio/mp4",
    "audio/flac",
    "audio/x-flac",
    "audio/mod",
    "audio/x-mod",
    "audio/x-wav",
    "audio/microsoft-wav",
    "audio/x-wma",
    "audio/x-ms-wma",
    "audio/ogg",
    "audio/x-vorbis+ogg",
    "application/ogg",
    "application/x-ogg",
    NULL
};

static gboolean
mail_formatter_audio_format (EMailFormatterExtension *extension,
                             EMailFormatter *formatter,
                             EMailFormatterContext *context,
                             EMailPart *part,
                             GOutputStream *stream,
                             GCancellable *cancellable)
{
    CamelMimePart *mime_part;
    CamelDataWrapper *content;
    CamelTransferEncoding encoding;
    GOutputStream *mem_stream;
    const gchar *mime_type;
    gchar *html;
    GError *local_error = NULL;

    mime_part = e_mail_part_ref_mime_part (part);
    encoding = camel_mime_part_get_encoding (mime_part);
    content = camel_medium_get_content (CAMEL_MEDIUM (mime_part));

    mime_type = e_mail_part_get_mime_type (part);
    if (mime_type == NULL)
        mime_type = "audio/*";

    mem_stream = g_memory_output_stream_new_resizable ();

    if (encoding == CAMEL_TRANSFER_ENCODING_BASE64) {
        const gchar *data;

        camel_data_wrapper_write_to_output_stream_sync (
            content, mem_stream, cancellable, &local_error);

        data = g_memory_output_stream_get_data (
            G_MEMORY_OUTPUT_STREAM (mem_stream));

        html = g_strdup_printf (
            "<audio controls>"
            "<source src=\"data:%s;base64,%s\"/>"
            "</audio>",
            mime_type, data);

    } else {
        const guchar *data;
        gchar *base64;
        gsize size;

        camel_data_wrapper_decode_to_output_stream_sync (
            content, mem_stream, cancellable, &local_error);

        data = g_memory_output_stream_get_data (
            G_MEMORY_OUTPUT_STREAM (mem_stream));
        size = g_memory_output_stream_get_data_size (
            G_MEMORY_OUTPUT_STREAM (mem_stream));

        base64 = g_base64_encode (data, size);
        html = g_strdup_printf (
            "<audio controls>"
            "<source src=\"data:%s;base64,%s\"/>"
            "</audio>",
            mime_type, base64);
        g_free (base64);
    }

    /* XXX Should show the error message in the UI somehow. */
    if (local_error != NULL) {
        g_warning ("%s: %s", G_STRFUNC, local_error->message);
        g_error_free (local_error);
    }

    g_output_stream_write_all (
        stream, html, strlen (html), NULL, cancellable, NULL);

    g_free (html);

    g_object_unref (mime_part);
    g_object_unref (mem_stream);

    return TRUE;
}

static void
e_mail_formatter_audio_class_init (EMailFormatterExtensionClass *class)
{
    class->display_name = _("Audio Player");
    class->description = _("Play the attachment in embedded audio player");
    class->mime_types = formatter_mime_types;
    class->priority = G_PRIORITY_LOW;
    class->format = mail_formatter_audio_format;
}

static void
e_mail_formatter_audio_init (EMailFormatterExtension *extension)
{
}