static gboolean
gst_amc_video_dec_set_format (GstVideoDecoder * decoder,
    GstVideoCodecState * state)
{
  GstAmcVideoDec *self;
  GstAmcFormat *format;
  const gchar *mime;
  gboolean is_format_change = FALSE;
  gboolean needs_disable = FALSE;
  gchar *format_string;
  guint8 *codec_data = NULL;
  gsize codec_data_size = 0;
  GError *err = NULL;

  self = GST_AMC_VIDEO_DEC (decoder);

  GST_DEBUG_OBJECT (self, "Setting new caps %" GST_PTR_FORMAT, state->caps);

  /* Check if the caps change is a real format change or if only irrelevant
   * parts of the caps have changed or nothing at all.
   */
  is_format_change |= self->color_format_info.width != state->info.width;
  is_format_change |= self->color_format_info.height != state->info.height;
  if (state->codec_data) {
    GstMapInfo cminfo;

    gst_buffer_map (state->codec_data, &cminfo, GST_MAP_READ);
    codec_data = g_memdup (cminfo.data, cminfo.size);
    codec_data_size = cminfo.size;

    is_format_change |= (!self->codec_data
        || self->codec_data_size != codec_data_size
        || memcmp (self->codec_data, codec_data, codec_data_size) != 0);
    gst_buffer_unmap (state->codec_data, &cminfo);
  } else if (self->codec_data) {
    is_format_change |= TRUE;
  }

  needs_disable = self->started;

  /* If the component is not started and a real format change happens
   * we have to restart the component. If no real format change
   * happened we can just exit here.
   */
  if (needs_disable && !is_format_change) {
    g_free (codec_data);
    codec_data = NULL;
    codec_data_size = 0;

    /* Framerate or something minor changed */
    self->input_state_changed = TRUE;
    if (self->input_state)
      gst_video_codec_state_unref (self->input_state);
    self->input_state = gst_video_codec_state_ref (state);
    GST_DEBUG_OBJECT (self,
        "Already running and caps did not change the format");
    return TRUE;
  }

  if (needs_disable && is_format_change) {
    gst_amc_video_dec_drain (self);
    GST_VIDEO_DECODER_STREAM_UNLOCK (self);
    gst_amc_video_dec_stop (GST_VIDEO_DECODER (self));
    GST_VIDEO_DECODER_STREAM_LOCK (self);
    gst_amc_video_dec_close (GST_VIDEO_DECODER (self));
    if (!gst_amc_video_dec_open (GST_VIDEO_DECODER (self))) {
      GST_ERROR_OBJECT (self, "Failed to open codec again");
      return FALSE;
    }

    if (!gst_amc_video_dec_start (GST_VIDEO_DECODER (self))) {
      GST_ERROR_OBJECT (self, "Failed to start codec again");
    }
  }
  /* srcpad task is not running at this point */
  if (self->input_state)
    gst_video_codec_state_unref (self->input_state);
  self->input_state = NULL;

  g_free (self->codec_data);
  self->codec_data = codec_data;
  self->codec_data_size = codec_data_size;

  mime = caps_to_mime (state->caps);
  if (!mime) {
    GST_ERROR_OBJECT (self, "Failed to convert caps to mime");
    return FALSE;
  }

  format =
      gst_amc_format_new_video (mime, state->info.width, state->info.height,
      &err);
  if (!format) {
    GST_ERROR_OBJECT (self, "Failed to create video format");
    GST_ELEMENT_ERROR_FROM_ERROR (self, err);
    return FALSE;
  }

  /* FIXME: This buffer needs to be valid until the codec is stopped again */
  if (self->codec_data) {
    gst_amc_format_set_buffer (format, "csd-0", self->codec_data,
        self->codec_data_size, &err);
    if (err)
      GST_ELEMENT_WARNING_FROM_ERROR (self, err);
  }

  format_string = gst_amc_format_to_string (format, &err);
  if (err)
    GST_ELEMENT_WARNING_FROM_ERROR (self, err);
  GST_DEBUG_OBJECT (self, "Configuring codec with format: %s",
      GST_STR_NULL (format_string));
  g_free (format_string);

  if (!gst_amc_codec_configure (self->codec, format, 0, &err)) {
    GST_ERROR_OBJECT (self, "Failed to configure codec");
    GST_ELEMENT_ERROR_FROM_ERROR (self, err);
    return FALSE;
  }

  gst_amc_format_free (format);

  if (!gst_amc_codec_start (self->codec, &err)) {
    GST_ERROR_OBJECT (self, "Failed to start codec");
    GST_ELEMENT_ERROR_FROM_ERROR (self, err);
    return FALSE;
  }

  self->started = TRUE;
  self->input_state = gst_video_codec_state_ref (state);
  self->input_state_changed = TRUE;

  /* Start the srcpad loop again */
  self->flushing = FALSE;
  self->downstream_flow_ret = GST_FLOW_OK;
  gst_pad_start_task (GST_VIDEO_DECODER_SRC_PAD (self),
      (GstTaskFunction) gst_amc_video_dec_loop, decoder, NULL);

  return TRUE;
}
static gboolean
gst_amc_audio_dec_set_format (GstAudioDecoder * decoder, GstCaps * caps)
{
  GstAmcAudioDec *self;
  GstStructure *s;
  GstAmcFormat *format;
  const gchar *mime;
  gboolean is_format_change = FALSE;
  gboolean needs_disable = FALSE;
  gchar *format_string;
  gint rate, channels;
  GError *err = NULL;

  self = GST_AMC_AUDIO_DEC (decoder);

  GST_DEBUG_OBJECT (self, "Setting new caps %" GST_PTR_FORMAT, caps);

  /* Check if the caps change is a real format change or if only irrelevant
   * parts of the caps have changed or nothing at all.
   */
  is_format_change |= (!self->input_caps
      || !gst_caps_is_equal (self->input_caps, caps));

  needs_disable = self->started;

  /* If the component is not started and a real format change happens
   * we have to restart the component. If no real format change
   * happened we can just exit here.
   */
  if (needs_disable && !is_format_change) {
    /* Framerate or something minor changed */
    self->input_caps_changed = TRUE;
    GST_DEBUG_OBJECT (self,
        "Already running and caps did not change the format");
    return TRUE;
  }

  if (needs_disable && is_format_change) {
    gst_amc_audio_dec_drain (self);
    GST_AUDIO_DECODER_STREAM_UNLOCK (self);
    gst_amc_audio_dec_stop (GST_AUDIO_DECODER (self));
    GST_AUDIO_DECODER_STREAM_LOCK (self);
    gst_amc_audio_dec_close (GST_AUDIO_DECODER (self));
    if (!gst_amc_audio_dec_open (GST_AUDIO_DECODER (self))) {
      GST_ERROR_OBJECT (self, "Failed to open codec again");
      return FALSE;
    }

    if (!gst_amc_audio_dec_start (GST_AUDIO_DECODER (self))) {
      GST_ERROR_OBJECT (self, "Failed to start codec again");
    }
  }
  /* srcpad task is not running at this point */

  mime = caps_to_mime (caps);
  if (!mime) {
    GST_ERROR_OBJECT (self, "Failed to convert caps to mime");
    return FALSE;
  }

  s = gst_caps_get_structure (caps, 0);
  if (!gst_structure_get_int (s, "rate", &rate) ||
      !gst_structure_get_int (s, "channels", &channels)) {
    GST_ERROR_OBJECT (self, "Failed to get rate/channels");
    return FALSE;
  }

  format = gst_amc_format_new_audio (mime, rate, channels, &err);
  if (!format) {
    GST_ELEMENT_ERROR_FROM_ERROR (self, err);
    return FALSE;
  }

  /* FIXME: These buffers needs to be valid until the codec is stopped again */
  g_list_foreach (self->codec_datas, (GFunc) gst_buffer_unref, NULL);
  g_list_free (self->codec_datas);
  self->codec_datas = NULL;
  if (gst_structure_has_field (s, "codec_data")) {
    const GValue *h = gst_structure_get_value (s, "codec_data");
    GstBuffer *codec_data = gst_value_get_buffer (h);
    GstMapInfo minfo;
    guint8 *data;

    gst_buffer_map (codec_data, &minfo, GST_MAP_READ);
    data = g_memdup (minfo.data, minfo.size);
    self->codec_datas = g_list_prepend (self->codec_datas, data);
    gst_amc_format_set_buffer (format, "csd-0", data, minfo.size, &err);
    if (err)
      GST_ELEMENT_WARNING_FROM_ERROR (self, err);
    gst_buffer_unmap (codec_data, &minfo);
  } else if (gst_structure_has_field (s, "streamheader")) {
    const GValue *sh = gst_structure_get_value (s, "streamheader");
    gint nsheaders = gst_value_array_get_size (sh);
    GstBuffer *buf;
    const GValue *h;
    gint i, j;
    gchar *fname;
    GstMapInfo minfo;
    guint8 *data;

    for (i = 0, j = 0; i < nsheaders; i++) {
      h = gst_value_array_get_value (sh, i);
      buf = gst_value_get_buffer (h);

      if (strcmp (mime, "audio/vorbis") == 0) {
        guint8 header_type;

        gst_buffer_extract (buf, 0, &header_type, 1);

        /* Only use the identification and setup packets */
        if (header_type != 0x01 && header_type != 0x05)
          continue;
      }

      fname = g_strdup_printf ("csd-%d", j);
      gst_buffer_map (buf, &minfo, GST_MAP_READ);
      data = g_memdup (minfo.data, minfo.size);
      self->codec_datas = g_list_prepend (self->codec_datas, data);
      gst_amc_format_set_buffer (format, fname, data, minfo.size, &err);
      if (err)
        GST_ELEMENT_WARNING_FROM_ERROR (self, err);
      gst_buffer_unmap (buf, &minfo);
      g_free (fname);
      j++;
    }
  }

  format_string = gst_amc_format_to_string (format, &err);
  if (err)
    GST_ELEMENT_WARNING_FROM_ERROR (self, err);
  GST_DEBUG_OBJECT (self, "Configuring codec with format: %s",
      GST_STR_NULL (format_string));
  g_free (format_string);

  if (!gst_amc_codec_configure (self->codec, format, 0, &err)) {
    GST_ERROR_OBJECT (self, "Failed to configure codec");
    GST_ELEMENT_ERROR_FROM_ERROR (self, err);
    return FALSE;
  }

  gst_amc_format_free (format);

  if (!gst_amc_codec_start (self->codec, &err)) {
    GST_ERROR_OBJECT (self, "Failed to start codec");
    GST_ELEMENT_ERROR_FROM_ERROR (self, err);
    return FALSE;
  }

  self->spf = -1;
  /* TODO: Implement for other codecs too */
  if (gst_structure_has_name (s, "audio/mpeg")) {
    gint mpegversion = -1;

    gst_structure_get_int (s, "mpegversion", &mpegversion);
    if (mpegversion == 1) {
      gint layer = -1, mpegaudioversion = -1;

      gst_structure_get_int (s, "layer", &layer);
      gst_structure_get_int (s, "mpegaudioversion", &mpegaudioversion);
      if (layer == 1)
        self->spf = 384;
      else if (layer == 2)
        self->spf = 1152;
      else if (layer == 3 && mpegaudioversion != -1)
        self->spf = (mpegaudioversion == 1 ? 1152 : 576);
    }
  }

  self->started = TRUE;
  self->input_caps_changed = TRUE;

  /* Start the srcpad loop again */
  self->flushing = FALSE;
  self->downstream_flow_ret = GST_FLOW_OK;
  gst_pad_start_task (GST_AUDIO_DECODER_SRC_PAD (self),
      (GstTaskFunction) gst_amc_audio_dec_loop, decoder, NULL);

  return TRUE;
}
static gboolean
gst_amc_video_dec_set_src_caps (GstAmcVideoDec * self, GstAmcFormat * format)
{
  GstVideoCodecState *output_state;
  const gchar *mime;
  gint color_format, width, height;
  gint stride, slice_height;
  gint crop_left, crop_right;
  gint crop_top, crop_bottom;
  GstVideoFormat gst_format;
  GstAmcVideoDecClass *klass = GST_AMC_VIDEO_DEC_GET_CLASS (self);
  GError *err = NULL;
  gboolean ret;

  if (!gst_amc_format_get_int (format, "color-format", &color_format, &err) ||
      !gst_amc_format_get_int (format, "width", &width, &err) ||
      !gst_amc_format_get_int (format, "height", &height, &err)) {
    GST_ERROR_OBJECT (self, "Failed to get output format metadata: %s",
        err->message);
    g_clear_error (&err);
    return FALSE;
  }

  if (!gst_amc_format_get_int (format, "stride", &stride, &err) ||
      !gst_amc_format_get_int (format, "slice-height", &slice_height, &err)) {
    GST_ERROR_OBJECT (self, "Failed to get stride and slice-height: %s",
        err->message);
    g_clear_error (&err);
    return FALSE;
  }

  if (!gst_amc_format_get_int (format, "crop-left", &crop_left, &err) ||
      !gst_amc_format_get_int (format, "crop-right", &crop_right, &err) ||
      !gst_amc_format_get_int (format, "crop-top", &crop_top, &err) ||
      !gst_amc_format_get_int (format, "crop-bottom", &crop_bottom, &err)) {
    GST_ERROR_OBJECT (self, "Failed to get crop rectangle: %s", err->message);
    g_clear_error (&err);
    return FALSE;
  }

  if (width == 0 || height == 0) {
    GST_ERROR_OBJECT (self, "Height or width not set");
    return FALSE;
  }

  if (crop_bottom)
    height = height - (height - crop_bottom - 1);
  if (crop_top)
    height = height - crop_top;

  if (crop_right)
    width = width - (width - crop_right - 1);
  if (crop_left)
    width = width - crop_left;

  mime = caps_to_mime (self->input_state->caps);
  if (!mime) {
    GST_ERROR_OBJECT (self, "Failed to convert caps to mime");
    return FALSE;
  }

  gst_format =
      gst_amc_color_format_to_video_format (klass->codec_info, mime,
      color_format);

  if (gst_format == GST_VIDEO_FORMAT_UNKNOWN) {
    GST_ERROR_OBJECT (self, "Unknown color format 0x%08x", color_format);
    return FALSE;
  }

  output_state = gst_video_decoder_set_output_state (GST_VIDEO_DECODER (self),
      gst_format, width, height, self->input_state);

  /* FIXME: Special handling for multiview, untested */
  if (color_format == COLOR_QCOM_FormatYVU420SemiPlanar32mMultiView) {
    gst_video_multiview_video_info_change_mode (&output_state->info,
        GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM, GST_VIDEO_MULTIVIEW_FLAGS_NONE);
  }

  self->format = gst_format;
  if (!gst_amc_color_format_info_set (&self->color_format_info,
          klass->codec_info, mime, color_format, width, height, stride,
          slice_height, crop_left, crop_right, crop_top, crop_bottom)) {
    GST_ERROR_OBJECT (self, "Failed to set up GstAmcColorFormatInfo");
    return FALSE;
  }

  GST_DEBUG_OBJECT (self,
      "Color format info: {color_format=%d, width=%d, height=%d, "
      "stride=%d, slice-height=%d, crop-left=%d, crop-top=%d, "
      "crop-right=%d, crop-bottom=%d, frame-size=%d}",
      self->color_format_info.color_format, self->color_format_info.width,
      self->color_format_info.height, self->color_format_info.stride,
      self->color_format_info.slice_height, self->color_format_info.crop_left,
      self->color_format_info.crop_top, self->color_format_info.crop_right,
      self->color_format_info.crop_bottom, self->color_format_info.frame_size);

  ret = gst_video_decoder_negotiate (GST_VIDEO_DECODER (self));
  gst_video_codec_state_unref (output_state);
  self->input_state_changed = FALSE;

  return ret;
}