/**
* gst_audio_info_is_equal:
* @info: a #GstAudioInfo
* @other: a #GstAudioInfo
*
* Compares two #GstAudioInfo and returns whether they are equal or not
*
* Returns: %TRUE if @info and @other are equal, else %FALSE.
*
* Since: 1.2
*
*/
gboolean
gst_audio_info_is_equal (const GstAudioInfo * info, const GstAudioInfo * other)
{
if (info == other)
return TRUE;
if (info->finfo == NULL || other->finfo == NULL)
return FALSE;
if (GST_AUDIO_INFO_FORMAT (info) != GST_AUDIO_INFO_FORMAT (other))
return FALSE;
if (GST_AUDIO_INFO_FLAGS (info) != GST_AUDIO_INFO_FLAGS (other))
return FALSE;
if (GST_AUDIO_INFO_LAYOUT (info) != GST_AUDIO_INFO_LAYOUT (other))
return FALSE;
if (GST_AUDIO_INFO_RATE (info) != GST_AUDIO_INFO_RATE (other))
return FALSE;
if (GST_AUDIO_INFO_CHANNELS (info) != GST_AUDIO_INFO_CHANNELS (other))
return FALSE;
if (GST_AUDIO_INFO_CHANNELS (info) > 64)
return TRUE;
if (memcmp (info->position, other->position,
GST_AUDIO_INFO_CHANNELS (info) * sizeof (GstAudioChannelPosition)) !=
0)
return FALSE;
return TRUE;
}
static gboolean
gst_raw_audio_parse_caps_to_config (GstRawAudioParse * raw_audio_parse,
GstCaps * caps, GstRawAudioParseConfig * config)
{
gboolean ret = FALSE;
GstStructure *structure;
/* Caps might get copied, and the copy needs to be unref'd.
* Also, the caller retains ownership over the original caps.
* So, to make this mechanism also work with cases where the
* caps are *not* copied, ref the original caps here first. */
gst_caps_ref (caps);
structure = gst_caps_get_structure (caps, 0);
/* For unaligned raw data, the output caps stay the same,
* except that audio/x-unaligned-raw becomes audio/x-raw,
* since the parser aligns the sample data */
if (gst_structure_has_name (structure, "audio/x-unaligned-raw")) {
/* Copy the caps to be able to modify them */
GstCaps *new_caps = gst_caps_copy (caps);
gst_caps_unref (caps);
caps = new_caps;
/* Change the media type to audio/x-raw , otherwise
* gst_audio_info_from_caps() won't work */
structure = gst_caps_get_structure (caps, 0);
gst_structure_set_name (structure, "audio/x-raw");
}
if (gst_structure_has_name (structure, "audio/x-raw")) {
guint num_channels;
GstAudioInfo info;
if (!gst_audio_info_from_caps (&info, caps)) {
GST_ERROR_OBJECT (raw_audio_parse,
"failed to parse caps %" GST_PTR_FORMAT, (gpointer) caps);
goto done;
}
num_channels = GST_AUDIO_INFO_CHANNELS (&info);
config->format = GST_RAW_AUDIO_PARSE_FORMAT_PCM;
config->pcm_format = GST_AUDIO_INFO_FORMAT (&info);
config->bpf = GST_AUDIO_INFO_BPF (&info);
config->sample_rate = GST_AUDIO_INFO_RATE (&info);
config->interleaved =
(GST_AUDIO_INFO_LAYOUT (&info) == GST_AUDIO_LAYOUT_INTERLEAVED);
gst_raw_audio_parse_set_config_channels (config, num_channels, 0, FALSE);
memcpy (config->channel_positions, &(GST_AUDIO_INFO_POSITION (&info, 0)),
sizeof (GstAudioChannelPosition) * num_channels);
} else if (gst_structure_has_name (structure, "audio/x-alaw")
|| gst_structure_has_name (structure, "audio/x-mulaw")) {
gint i;
guint64 channel_mask;
guint num_channels;
config->format =
gst_structure_has_name (structure,
"audio/x-alaw") ? GST_RAW_AUDIO_PARSE_FORMAT_ALAW :
GST_RAW_AUDIO_PARSE_FORMAT_MULAW;
if (!gst_structure_get_int (structure, "rate", &i)) {
GST_ERROR_OBJECT (raw_audio_parse,
"missing rate value in caps %" GST_PTR_FORMAT, (gpointer) caps);
goto done;
}
config->sample_rate = i;
if (!gst_structure_get_int (structure, "channels", &i)) {
GST_ERROR_OBJECT (raw_audio_parse,
"missing channels value in caps %" GST_PTR_FORMAT, (gpointer) caps);
goto done;
}
num_channels = i;
if (!gst_structure_get (structure, "channel-mask", GST_TYPE_BITMASK,
&channel_mask, NULL)) {
channel_mask = gst_audio_channel_get_fallback_mask (num_channels);
GST_DEBUG_OBJECT (raw_audio_parse,
"input caps have no channel mask - using fallback mask %#"
G_GINT64_MODIFIER "x for %u channels", channel_mask, num_channels);
}
if (!gst_raw_audio_parse_set_config_channels (config, num_channels,
channel_mask, TRUE)) {
GST_ERROR_OBJECT (raw_audio_parse,
"could not use channel mask %#" G_GINT64_MODIFIER
"x for channel positions", channel_mask);
goto done;
}
/* A-law and mu-law both use 1 byte per sample */
config->bpf = 1 * num_channels;
} else {
GST_ERROR_OBJECT (raw_audio_parse,
"caps %" GST_PTR_FORMAT " have an unsupported media type",
(gpointer) caps);
goto done;
}
ret = TRUE;
done:
gst_caps_unref (caps);
if (ret)
config->ready = TRUE;
return ret;
}
