/* libquvi

 * Copyright (C) 2012,2013  Toni Gundogdu <legatvs@gmail.com>

 *

 * This file is part of libquvi <http://quvi.sourceforge.net/>.

 *

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

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

 * License as published by the Free Software Foundation, either

 * version 3 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 Affero General Public License for more details.

 *

 * You should have received a copy of the GNU Affero General

 * Public License along with this library.  If not, see

 * <http://www.gnu.org/licenses/>.

 */

/** @file media_get.c */

#include "config.h"

#include <glib.h>

#include "quvi.h"

/* -- */

#include "_quvi_s.h"

#include "_quvi_media_s.h"

/* Advances the current stream pointer to the first stream if undefined. */

static void _chk_curr_stream(_quvi_media_t qm, _quvi_media_stream_t *qms)

{

  if (qm->curr.stream == NULL)

    {

      const QuviBoolean r = quvi_media_stream_next(qm);

      g_assert(r == QUVI_TRUE); /* If the stream list is still empty,

                                 * quvi_media_get is being used incorrectly.*/

    }

  g_assert(qm->curr.stream != NULL);

  *qms = (_quvi_media_stream_t) qm->curr.stream->data;

  g_assert(*qms != NULL);

}

static QuviError _media_get(_quvi_media_t qm, const QuviMediaProperty n, ...)

{

  _quvi_media_stream_t qms;

  QuviError rc;

  gdouble *dp;

  va_list arg;

  gchar **sp;

  glong *lp;

  gint type;

  va_start(arg, n);

  type = QUVI_MEDIA_PROPERTY_TYPE_MASK & (gint) n;

  dp = NULL;

  sp = NULL;

  lp = NULL;

  rc = QUVI_OK;

  qms = NULL;

  switch (type)

    {

    case QUVI_MEDIA_PROPERTY_TYPE_STRING:

      sp = va_arg(arg, gchar**);

      if (sp == NULL)

        rc = QUVI_ERROR_INVALID_ARG;

      break;

    case QUVI_MEDIA_PROPERTY_TYPE_LONG:

      lp = va_arg(arg, glong*);

      if (lp == NULL)

        rc = QUVI_ERROR_INVALID_ARG;

      break;

    case QUVI_MEDIA_PROPERTY_TYPE_DOUBLE:

      dp = va_arg(arg, gdouble*);

      if (dp == NULL)

        rc = QUVI_ERROR_INVALID_ARG;

      break;

    default:

      rc = QUVI_ERROR_INVALID_ARG;

      break;

    }

  va_end(arg);

  if (rc != QUVI_OK)

    return (rc);

  switch (n)

    {

    case QUVI_MEDIA_PROPERTY_TITLE:

      *sp = qm->title->str;

      break;

    case QUVI_MEDIA_PROPERTY_ID:

      *sp = qm->id->str;

      break;

    case QUVI_MEDIA_PROPERTY_START_TIME_MS:

      *dp = qm->start_time_ms;

      break;

    case QUVI_MEDIA_PROPERTY_THUMBNAIL_URL:

      *sp = qm->url.thumbnail->str;

      break;

    case QUVI_MEDIA_PROPERTY_DURATION_MS:

      *dp = qm->duration_ms;

      break;

      /*

       * Stream properties.

       *

       * NOTE: These must advance current stream pointer if it is still NULL.

       */

    case QUVI_MEDIA_STREAM_PROPERTY_VIDEO_ENCODING:

      _chk_curr_stream(qm, &qms);

      *sp = qms->video.encoding->str;

      break;

    case QUVI_MEDIA_STREAM_PROPERTY_AUDIO_ENCODING:

      _chk_curr_stream(qm, &qms);

      *sp = qms->audio.encoding->str;

      break;

    case QUVI_MEDIA_STREAM_PROPERTY_CONTAINER:

      _chk_curr_stream(qm, &qms);

      *sp = qms->container->str;

      break;

    case QUVI_MEDIA_STREAM_PROPERTY_URL:

      _chk_curr_stream(qm, &qms);

      *sp = qms->url->str;

      break;

    case QUVI_MEDIA_STREAM_PROPERTY_ID:

      _chk_curr_stream(qm, &qms);

      *sp = qms->id->str;

      break;

    case QUVI_MEDIA_STREAM_PROPERTY_VIDEO_BITRATE_KBIT_S:

      _chk_curr_stream(qm, &qms);

      *dp = qms->video.bitrate_kbit_s;

      break;

    case QUVI_MEDIA_STREAM_PROPERTY_AUDIO_BITRATE_KBIT_S:

      _chk_curr_stream(qm, &qms);

      *dp = qms->audio.bitrate_kbit_s;

      break;

    case QUVI_MEDIA_STREAM_PROPERTY_VIDEO_HEIGHT:

      _chk_curr_stream(qm, &qms);

      *dp = qms->video.height;

      break;

    case QUVI_MEDIA_STREAM_PROPERTY_VIDEO_WIDTH:

      _chk_curr_stream(qm, &qms);

      *dp = qms->video.width;

      break;

    default:

      rc = QUVI_ERROR_INVALID_ARG;

      break;

    }

  return (rc);

}

/** @brief Return a media property

@sa @ref parse_media

@ingroup mediaprop

@note

  - Accessing any of the QUVI_MEDIA_STREAM_PROPERTY_* values using this

    function will cause the library to advance to the first stream in

    the list, this will conflict with @ref quvi_media_stream_next,

    causing @ref quvi_media_stream_next to advance from the second

    stream, not the first stream

  - URLs will be returned in the escaped form

*/

void quvi_media_get(quvi_media_t handle, QuviMediaProperty property, ...)

{

  _quvi_media_t qm;

  va_list arg;

  gpointer p;

  _quvi_t q;

  /* If G_DISABLE_CHECKS is defined then the check is not performed. */

  g_return_if_fail(handle != NULL);

  va_start(arg, property);

  p = va_arg(arg, gpointer);

  va_end(arg);

  qm = (_quvi_media_t) handle;

  q = qm->handle.quvi;

  q->status.rc = _media_get(qm, property, p);

}

/* vim: set ts=2 sw=2 tw=72 expandtab: */