"rate = (int) { " SAMPLE_RATES " }, "
"channels = (int) {1, 2, 3, 4, 5, 6, 8}, "
"stream-format = (string) { adts, adif, raw }, "
- "base-profile = (string) lc, " "framed = (boolean) true")
+ "profile = (string) { lc, he-aac-v1, he-aac-v2, ld }, "
+ "framed = (boolean) true")
);
GST_DEBUG_CATEGORY_STATIC (gst_fdkaacenc_debug);
gst_fdkaacenc_get_caps (GstAudioEncoder * enc, GstCaps * filter)
{
const GstFdkAacChannelLayout *layout;
- GstCaps *res, *caps;
+ GstCaps *res, *caps, *allowed_caps;
+ gboolean allow_mono = TRUE;
+
+ allowed_caps = gst_pad_get_allowed_caps (GST_AUDIO_ENCODER_SRC_PAD (enc));
+ GST_DEBUG_OBJECT (enc, "allowed caps %" GST_PTR_FORMAT, allowed_caps);
+
+ /* We need at least 2 channels if Parametric Stereo is in use. */
+ if (allowed_caps && gst_caps_get_size (allowed_caps) > 0) {
+ GstStructure *s = gst_caps_get_structure (allowed_caps, 0);
+ const gchar *profile = NULL;
+
+ if ((profile = gst_structure_get_string (s, "profile"))
+ && strcmp (profile, "he-aac-v2") == 0) {
+ allow_mono = FALSE;
+ }
+ }
+ gst_clear_caps (&allowed_caps);
caps = gst_caps_new_empty ();
for (layout = channel_layouts; layout->channels; layout++) {
+ GstCaps *tmp;
gint channels = layout->channels;
- GstCaps *tmp =
- gst_caps_make_writable (gst_pad_get_pad_template_caps
+
+ if (channels == 1 && !allow_mono)
+ continue;
+
+ tmp = gst_caps_make_writable (gst_pad_get_pad_template_caps
(GST_AUDIO_ENCODER_SINK_PAD (enc)));
if (channels == 1) {
gint mpegversion = 4;
CHANNEL_MODE channel_mode;
AACENC_InfoStruct enc_info = { 0 };
- gint bitrate;
+ gint bitrate, signaling_mode;
+ const gchar *ext_profile;
if (self->enc && !self->is_drained) {
/* drain */
}
}
+ if ((str = gst_structure_get_string (s, "profile"))) {
+ if (strcmp (str, "lc") == 0) {
+ GST_DEBUG_OBJECT (self, "using AAC-LC profile for output");
+ aot = AOT_AAC_LC;
+ } else if (strcmp (str, "he-aac-v1") == 0) {
+ GST_DEBUG_OBJECT (self, "using SBR (HE-AACv1) profile for output");
+ aot = AOT_SBR;
+ } else if (strcmp (str, "he-aac-v2") == 0) {
+ GST_DEBUG_OBJECT (self, "using PS (HE-AACv2) profile for output");
+ aot = AOT_PS;
+ } else if (strcmp (str, "ld") == 0) {
+ GST_DEBUG_OBJECT (self, "using AAC-LD profile for output");
+ aot = AOT_ER_AAC_LD;
+ }
+ }
+
gst_structure_get_int (s, "mpegversion", &mpegversion);
}
if (allowed_caps)
return FALSE;
}
- aot = AOT_AAC_LC;
-
if ((err = aacEncoder_SetParam (self->enc, AACENC_AOT, aot)) != AACENC_OK) {
GST_ERROR_OBJECT (self, "Unable to set AOT %d: %d", aot, err);
return FALSE;
}
+ /* Use explicit hierarchical signaling (2) with raw output stream-format
+ * and implicit signaling (0) with ADTS/ADIF */
+ if (transmux == 0)
+ signaling_mode = 2;
+ else
+ signaling_mode = 0;
+
+ if ((err = aacEncoder_SetParam (self->enc, AACENC_SIGNALING_MODE,
+ signaling_mode)) != AACENC_OK) {
+ GST_ERROR_OBJECT (self, "Unable to set signaling mode %d: %d",
+ signaling_mode, err);
+ return FALSE;
+ }
+
if ((err = aacEncoder_SetParam (self->enc, AACENC_SAMPLERATE,
GST_AUDIO_INFO_RATE (info))) != AACENC_OK) {
GST_ERROR_OBJECT (self, "Unable to set sample rate %d: %d",
gst_codec_utils_aac_caps_set_level_and_profile (src_caps, enc_info.confBuf,
enc_info.confSize);
+ /* The above only parses the "base" profile, which is always going to be LC.
+ * Let's retrieve the extension AOT and set it as our profile in the caps. */
+ ext_profile = gst_codec_utils_aac_get_extension_profile (enc_info.confBuf,
+ enc_info.confSize);
+
+ if (ext_profile)
+ gst_caps_set_simple (src_caps, "profile", G_TYPE_STRING, ext_profile, NULL);
+
ret = gst_audio_encoder_set_output_format (enc, src_caps);
gst_caps_unref (src_caps);